From hat at se-162.se.wtb.tue.nl  Tue Oct 30 08:45:12 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Tue, 30 Oct 2007 13:45:12 +0100
Subject: Readline and record separator
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
Message-ID: <slrnfie9qo.m7i.hat@se-162.se.wtb.tue.nl>

On 2007-10-30, Johny <python at hope.cz> wrote:
> Is it possible to change record separator when using readline?
> As far as I know readline reads characters until found '\n' and it is
> the end of record for readline.
> My problem is that my record consits several '\n' and when I use
> readline it does NOT read the whole my record.
> So If I could change '\n' as  a record separator for readline, it
> would solve my problem.
> Any idea?

Read large enough blocks of data, then use block.find() (in the string module)
to find your delimiter, and split the block.

Albert



From tchur at optushome.com.au  Thu Oct 11 18:09:40 2007
From: tchur at optushome.com.au (Tim Churches)
Date: Fri, 12 Oct 2007 08:09:40 +1000
Subject: Web Ontology Language (OWL) parsing
In-Reply-To: <1192138731.912438.139580@o3g2000hsb.googlegroups.com>
References: <1192138731.912438.139580@o3g2000hsb.googlegroups.com>
Message-ID: <470E9F24.7040300@optushome.com.au>

Sean Davis wrote:
> I would like to parse some OWL files, but I haven't dealt with OWL in
> python or any other language for that matter.  Some quick google
> searches do not turn up much in the way of possibilities for doing so
> in python.  Any suggestions of available code or using existing
> libraries for doing so?

I'm not sure whether it is still being maintained, but what about CWM,
by Sir Semantic Web himself: http://www.w3.org/2000/10/swap/doc/cwm.html

Tim C
(If it is written by a Tim it must be good.)



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 13:31:42 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 16 Oct 2007 19:31:42 +0200
Subject: Why does the message send only once?
In-Reply-To: <1192550131.869157.88130@q5g2000prf.googlegroups.com>
References: <1192550131.869157.88130@q5g2000prf.googlegroups.com>
Message-ID: <4714f5b6$0$21020$426a34cc@news.free.fr>

danfolkes a ?crit :

<OT>
You already posted the same question here one hour and a half ago. 
Please avoid.
</OT>


From timr at probo.com  Sun Oct 28 19:22:54 2007
From: timr at probo.com (Tim Roberts)
Date: Sun, 28 Oct 2007 23:22:54 GMT
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<1193494184.618613.81090@50g2000hsm.googlegroups.com>
Message-ID: <n46ai3t0biv5390r4ijhq6ddn9va47f197@4ax.com>

MRAB <google at mrabarnett.plus.com> wrote:

>On Oct 27, 12:12 am, Ben Finney <bignose+hates-s... at benfinney.id.au>
>wrote:
>> Matimus <mccre... at gmail.com> writes:
>> > The trailing L [for 'long' literals] is going away in Python 3.0.
>>
>> Yes. On the other hand, we are gaining '0bNNNN' for binary literals,
>> to go along with '0oNNNN' for octal and '0xNNNN' for hexadecimal.
>>
>> So, the original poster might get further by proposing an '0dNNN.NNN'
>> syntax for 'decimal.Decimal' literals. At least the syntax would be
>> consistent and wouldn't add a new punctuation character to the
>> language...
>>
>[snip]
>Some languages have or permit 0qNNNN or 0QNNNN for octal to reduce the
>chance of confusion of 'O' (oh) with '0' (zero) in uppercase, eg.
>0Q123 is clearer than 0O123 (0 oh 123), although lowercase is better,
>eg. 0q123 or 0o123.

My favorite notation for this comes from Ada, which allows arbitrary bases
from 2 to 16, and allows for underscores within numeric literals:

  x23_bin : constant :=  2#0001_0111#;
  x23_oct : constant :=  8#27#;
  x23_dec : constant := 10#23#;
  x23_hex : constant := 16#17#;

The opportunities for obfuscated coding by writing all constants in base 7
boggle the mind.

I'm not convinced you need delimiters on both ends; I think 16'fffe_3777
would be just as good.

Although, now that I think about the original thread, this doesn't have a
neat solution for the decimal problem...
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From ttkk1024 at gmail.com  Fri Oct  5 22:40:25 2007
From: ttkk1024 at gmail.com (smalltalk)
Date: Sat, 06 Oct 2007 02:40:25 -0000
Subject: pypar error
Message-ID: <1191638425.609180.175620@g4g2000hsf.googlegroups.com>

I want to install pypar,but it always show following errors:
D:\pypar_1.9.3>python setup.py build -c mingw32

running build
running build_py
running build_ext
building 'pypar.mpiext' extension
D:\MinGWStudio\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -I
$MPICH_DIR\SDK.gcc
\include -ID:\Python25\include -ID:\Python25\PC -c mpiext.c -o build
\temp.win32-
2.5\Release\mpiext.o
gcc: mpiext.c: No such file or directory
gcc: no input files
error: command 'gcc' failed with exit status 1

can you give me a help ?



From bignose+hates-spam at benfinney.id.au  Mon Oct 29 01:23:48 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 16:23:48 +1100
Subject: PEP 299 and unit testing
References: <871wbehef8.fsf@benfinney.id.au>
	<9tmdnf3x8fMezLjanZ2dnUVZ_oninZ2d@comcast.com>
	<87k5p6fsxj.fsf@benfinney.id.au>
Message-ID: <87bqaifq8r.fsf@benfinney.id.au>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:

> Steven Bethard <steven.bethard at gmail.com> writes:
> 
> > Ben Finney wrote:
> > > What it doesn't allow is for the testing of the 'if __name__ ==
> > > "__main__":' clause itself. No matter how simple we make that,
> > > it's still functional code that can contain errors, be they
> > > obvious or subtle; yet it's code that *can't* be touched by the
> > > unit test (by design, it doesn't execute when the module is
> > > imported), leading to errors that won't be caught as early or
> > > easily as they might.
> > 
> > You could always use runpy.run_module.
> 
> Thanks! I was unaware of that module. It does seem to nicely address
> the issue I discussed.

Thinking about it further: I don't think it does address the issue.

Running the *entire* module code again in a single step (as
'run_module' seems to do) would happily overwrite any instrumented
faked attributes of the module that were inserted for the purpose of
unit testing, rendering it useless for unit test purposes.

The issue here is that there is an irreducible amount of functional
code inside the module that cannot be unit tested without running the
entire program with all its side effects.

PEP 299 promises to make that specific small-but-significant code
become an implementation detail in the language runtime, which would
mean it would no longer be prone to errors in the modules themselves,
and thus no longer the topic of a unit test on those modules. I think
100% statement coverage is not possible in Python programs without
this, or something that achieves the same thing.

-- 
 \           "We spend the first twelve months of our children's lives |
  `\          teaching them to walk and talk and the next twelve years |
_o__)        telling them to sit down and shut up."  -- Phyllis Diller |
Ben Finney


From danbrotherston at gmail.com  Tue Oct 16 16:34:49 2007
From: danbrotherston at gmail.com (danbrotherston)
Date: Tue, 16 Oct 2007 13:34:49 -0700
Subject: Capturing OutputDebugString information in python
Message-ID: <1192566889.524862.167030@k35g2000prh.googlegroups.com>

Hello,

I am trying to get the output from the win32 platform command
OutputDebugString.  I have used the following C++ code as a
guideline:

http://groups.google.com/group/microsoft.public.vc.utilities/browse_frm/thread/1434418cb968d053/1a3c957675242c7e?lnk=st&q=DBWIN_BUFFER&rnum=3#1a3c957675242c7e

And I have been able to translate most things into python, but I have
been unable to get it to work.  I use the pywin extensions to call
CreateEvent and create the required events.  But when I wait on the
event using the WaitOnSingleEvent call, it hangs indefinitely even
when I make calls to OutputDebugString in other processes, (both
python processes using win32api and actual C++ win32 programs).  I
also used mmap to map a file (using fileno -1) to the "DBWIN_BUFFER"
but that buffer appears to be empty all the time no matter the calls
to OutputDebugString.

I have limited experience with this part of windows, but if anyone had
any ideas I'd appreciate it greatly.

Thanks,

Daniel



From dkixk at earthlink.net  Mon Oct  8 22:28:12 2007
From: dkixk at earthlink.net (Damien Kick)
Date: Mon, 08 Oct 2007 21:28:12 -0500
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <13glppu3hknk597@corp.supernews.com>

Wildemar Wildenburger wrote:
> Frank Goenninger wrote:
>> On 2007-09-29 01:27:04 +0200, Damien Kick <dkixk at earthlink.net> said:
>>
>>> If you were referring to the "free" in "free Mumia Abu Jamal", I 
>>> would agree with you.  I don't think anyone would imagine that this 
>>> phrase meant that someone was going to get Mumia Abu Jamal gratis.  
>>> Like it or not, "free software" referring to "free as in beer" is 
>>> probably the most common interpretation of the phrase for a native 
>>> English speaker. [...]
>>
>> Fully true for non-native English speakers as well. Just did the "wife 
>> test" also - she is a pure software user - and yes, free is "no money, 
>> do what you want" and that's it.

I should have used the phrase "fluent English speaker"...

>> I *never* use the term "free" if I don't want to imply "free beer" 
>> (which is a Good Thing and as such highly valuated - ask any 
>> Bavarian). Using "free" as by FSF or any other lawyer-style 6 pixel 
>> font printed phrasing is pure perfidiousness.
>>
> I appearantly missed a lot of that conversation, but what is your point? 
> While I agree that the word "free" implies "free of monetary cost" to 
> many people societies, that is by no means set in stone [...].

For some odd reason, this reminded me of an old episode of Mork & Mindy:

<blockquote 
cite="http://www.salon.com/ent/movies/feature/1999/09/03/robin/">
What made Mork think eggs could fly? And yet when he tried to release 
them from the tyranny of gravity ("Fly, be free!"), flinging them into 
the air only to have them land with a soft thwack, it seemed like 
nothing so much as a stroke of loopy brilliance.
</blockquote>

The term "free eggs" can only sensibly mean one thing, eggs which can be 
obtained without an exchange of money.  To think of it meaning anything 
else--"fly, be free!"--is comedy (or not, depending on one's opinion of 
Mork & Mindy).  When Free Software Foundationistas try to insist on the 
phrase "free software" meaning anything other than the obvious 
interpretation of the term it is annoying (or not, depending on one's 
opinion of RMS's skills as a wordsmith).  I've got this great mental 
image of some farcical Free Software Liberation Army running around, 
removing hard drives from boxen, and throwing them in the air with the 
moral imperative to "fly, be free!"

> But that aside: The word free with respect to the FSF and GPL have a 
> perfectly well defined meaning. People may misunderstand that from not 
> knowing the definition but that doesnt make it any less well defined.

This thread of conversation also popped into my head when I was waiting 
in line at the Starbucks in the building in which I work.  I've been 
ordering a lot of Americanos lately.  I always ask for a small Americano 
and the person taking my order always calls out my drink as a "tall". 
With respect to Starbucks, calling a beverage which comes in the 
shortest cup used in the store a "tall" has a perfectly well defined 
meaning.  But that doesn't make it any less ridiculous.  Of course, it 
was mentioned elsewhere in this thread that context is important.  And 
it is.  To use the Starbucks analogy, for someone to criticize Starbucks 
because their tall drinks really are actually quite short would be 
ignoring the significance of the context of Starbucks' abuse of the 
English language.  But, again, that doesn't make Starbuck's use of the 
word any less ridiculous.  However, at least at Starbucks, when I use 
the "wrong" word, they don't start lecturing me.  They know what I mean 
and simply go ahead and translate it to Starbucks newspeak.

> Again, why this discussion?

Hello, Pot?  This is the kettle.  You are so black.


From cokofreedom at gmail.com  Thu Oct 18 10:09:24 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Thu, 18 Oct 2007 07:09:24 -0700
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <1192715280.994649.172110@q3g2000prf.googlegroups.com>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<13hddo2obghq5c0@corp.supernews.com>
	<1192715280.994649.172110@q3g2000prf.googlegroups.com>
Message-ID: <1192716564.870803.204670@i13g2000prf.googlegroups.com>

On Oct 18, 3:48 pm, Iain King <iaink... at gmail.com> wrote:
> On Oct 18, 2:29 am, Grant Edwards <gra... at visi.com> wrote:
>
>
>
> > On 2007-10-17, Debajit Adhikary <debaj... at gmail.com> wrote:
>
> > > # Start of Code
>
> > > def evenOdd():
> > >     values = ["Even", "Odd"]
> > >     state = 0
> > >     while True:
> > >         yield values[state]
> > >         state = (state + 1) % 2
>
> > I'd replace the last line with
>
> >           state ^= 1
>
> > to save a couple instructions, but I spend too much time
> > working with micoroprocessors running on clocks measured in the
> > KHz.
>
> > There are probably other more Pythonic ways...
>
> I always use:
>
>            state = 1 - state
>
> for toggles.  I doubt it's much more pythonic though :)
>
> Iain

why not do
state = not state
?



From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 20 00:47:31 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 20 Oct 2007 04:47:31 -0000
Subject: class vs type
References: <mailman.208.1192798489.13605.python-list@python.org>
	<87wstjtfip.fsf@mulj.homelinux.net>
	<mailman.219.1192810911.13605.python-list@python.org>
Message-ID: <13hj233db0ujid1@corp.supernews.com>

On Fri, 19 Oct 2007 12:21:25 -0400, Colin J. Williams wrote:

> In this case, why do we continue to use the word class to generate a
> type?

Because type is a callable, and class is convenient syntactic sugar.

class Parrot(object):
    def speak(self, msg):
        return "Polly sez %s" % msg


is much more convenient than:

import new
Parrot = type('Parrot', (object,), 
    {'speak': lambda self, msg: 'Polly sez %s' % msg})

particularly for large classes with many methods.



-- 
Steven


From chlo.prog at gmail.com  Wed Oct 17 11:49:06 2007
From: chlo.prog at gmail.com (rc)
Date: Wed, 17 Oct 2007 08:49:06 -0700
Subject: pymssql - insert NULL to int
Message-ID: <1192636146.759372.33660@v29g2000prd.googlegroups.com>

How to insert NULL values in to int field using params.

I'm trying to use pymssql.execute, passing the operation and list of
params.  One of the values in the params is a NULL value going to int
field.  The pymssql._quote() puts ' around the NULL which causes an
exception to be thrown, is there a way to use the params for this or
do I need to build the insert string myself?

pymssql.DatabaseError: internal error: SQL Server message 245,
severity 16, state 1, line 1:
Conversion failed when converting the varchar value 'NULL' to data
type int.
DB-Lib error message 10007, severity 5:
General SQL Server error: Check messages from the SQL Server.



From aahz at pythoncraft.com  Fri Oct  5 11:16:36 2007
From: aahz at pythoncraft.com (Aahz)
Date: 5 Oct 2007 08:16:36 -0700
Subject: Where's the Starship's crew?
References: <mailman.1567.1191573488.2658.python-list@python.org>
Message-ID: <fe5kgk$3h2$1@panix3.panix.com>

In article <mailman.1567.1191573488.2658.python-list at python.org>,
Dick Moores  <rdm at rcblue.com> wrote:
>
><http://starship.python.net/crew/index.html>
>
>I didn't check on all of them, but the only one I found was Mark 
>Hammond <http://starship.python.net/crew/mhammond/>.

This is the unfortunate remnant of a system hack; many people who used
to have active Starship accounts never bothered bringing them back after
Starship was cleaned up.  Starship was recently moved to another machine
and we're having discussions about the future.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

The best way to get information on Usenet is not to ask a question, but
to post the wrong information.


From panguohualove at sina.com  Mon Oct  1 01:13:49 2007
From: panguohualove at sina.com (panguohua)
Date: Sun, 30 Sep 2007 22:13:49 -0700
Subject: I earn $36800 a month with google adsense
Message-ID: <1191215629.384871.280240@o80g2000hse.googlegroups.com>

www.space666.com


a good website for making money with your blog.more information there



From stefan.arentz at gmail.com  Thu Oct  4 17:07:51 2007
From: stefan.arentz at gmail.com (Stefan Arentz)
Date: 04 Oct 2007 23:07:51 +0200
Subject: Is there a nicer way to do this?
Message-ID: <87ejgawpug.fsf@keizer.soze.com>


Is there a better way to do the following?

attributes = ['foo', 'bar']

attributeNames = {}
n = 1
for attribute in attributes:
   attributeNames["AttributeName.%d" % n] = attribute
   n = n + 1

It works, but I am wondering if there is a more pythonic way to
do this.

 S.


From gosinn at gmail.com  Mon Oct 22 04:17:31 2007
From: gosinn at gmail.com (Gosi)
Date: Mon, 22 Oct 2007 08:17:31 -0000
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
In-Reply-To: <qZmdnc2hJ8vOgIbanZ2dnUVZ_s6mnZ2d@comcast.com>
References: <47133159.9010204@acm.org>
	<1192920380.625668.221960@i13g2000prf.googlegroups.com>
	<1192954949.817248.242120@y27g2000pre.googlegroups.com>
	<qZmdnc2hJ8vOgIbanZ2dnUVZ_s6mnZ2d@comcast.com>
Message-ID: <1193041051.719162.94210@q3g2000prf.googlegroups.com>

On Oct 21, 10:35 am, "Wade Ward" <zaxf... at invalid.net> wrote:
> "Gosi" <gos... at gmail.com> wrote in message
>
> news:1192954949.817248.242120 at y27g2000pre.googlegroups.com...
>
>
>
> > On Oct 20, 10:46 pm, rbe <berne... at gmail.com> wrote:
> >> On Oct 15, 5:22 am, Mike Kent <mk... at acm.org> wrote:
>
> >> > Conference page
> >> >         // with links to program details //
> >> >                 (updated Friday 10/12)
>
> >> >        http://www.sigapl.org/apl2007.html...
>
> >> At APL2007, I'll be announcing the release of the APEX APL compiler,
> >> version 0.0.0, under GPL Version 2.
> >> If you can't wait until then, you can download it for Dyalog Linux
> >> atwww.snakeisland.com.
>
> >> Bob
>
> > Congratulations on your compiler.
>
> > I looked through your pages and came across this
>
> > "[This article originally appeared in the ACM SIGAPL Quote Quad, vol.
> > 21, no.1, September 1990.]
>
> > The APL character set has contributed, more than any other facet of
> > the language, to its lack of acceptance in the computing community at
> > large. The character set is a metaproblem -- not a problem in and of
> > itself, but a creator of other recurring problems of hardware,
> > software, ergonomics, and psychology. The adoption of new, ASCII-base
> > dialects of APL, such as J, is suggested as one solution to the
> > character set problem. "
>
> > This is also the reason for why I will not be downloading your new
> > compiler until there will be a J version of it, something I hope will
> > be coming soon.
>
> > I can not use the APL character set at all.
> > It is too mixed up with my national characters.
>
> witch ones?
> --
> wade ward
> w... at zaxfuuq.net
> "Der Katze tritt die Treppe hoch;  Der Kater tritt sie krumm.%
> % De Teufel geit um; er bringt de menschen allet dumm."
> schau, schau

   4 10$a.i.'????????????????????'
195 161 195 176 195 169 195 173 195 179
195 186 195 189 195 190 195 166 195 182
195 129 195 144 195 137 195 141 195 147
195 154 195 157 195 158 195 134 195 150



From Graham.Dumpleton at gmail.com  Sun Oct 14 05:20:15 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Sun, 14 Oct 2007 09:20:15 -0000
Subject: Paste and WSGI 2.0 [WAS: Yet another comparison of Python Web
	Frameworks]
In-Reply-To: <1192351618.434893.166310@e9g2000prf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1192323138.960870.251160@i13g2000prf.googlegroups.com>
	<1192351618.434893.166310@e9g2000prf.googlegroups.com>
Message-ID: <1192353615.432726.255850@q3g2000prf.googlegroups.com>

On Oct 14, 6:46 pm, Michele Simionato <michele.simion... at gmail.com>
wrote:
> Now, since you are here, there is an unrelated question that I want to
> ask you, concerning the future of Paste with respect to WSGI 2.0.
> I do realize that at this stage WSGI 2.0, is only a draft

Hmmm, not sure where people keep getting this idea that there exists a
WSGI 2.0 draft.

The only thing that exists that I know of is:

  http://www.wsgi.org/wsgi/WSGI_2.0

This is at this point merely a collection of ideas for change, or
areas where the existing WSGI 1.0 is deficient. There are a various
things around this where decisions would need to be made or solutions
developed before one could even consider calling it a draft. I
certainly wouldn't necessarily go off making decisions based on what
may or may not be in WSGI 2.0. :-)

Graham



From jcd at sdf.lonestar.org  Mon Oct  8 14:00:28 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 8 Oct 2007 14:00:28 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191865263.572366.270820@y42g2000hsy.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
Message-ID: <20071008180027.GD27158@sdf.lonestar.org>

On Mon, Oct 08, 2007 at 10:41:03AM -0700, mensanator at aol.com wrote regarding Re: pytz has so many timezones!:
> 
> On Oct 8, 2:32 am, Sanjay <skpate... at gmail.com> wrote:
> > Hi All,
> >
> > I am using pytz.common_timezones to populate the timezone combo box of
> > some user registration form. But as it has so many timezones (around
> > 400),
> 
> There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> +12.
> 
> A handful of countries set their clocks offset by a half hour,
> but those aren't timezones.
> 

I'm sorry.  By what even vaguely useful definition of "Timezone" is it not a timezone if it's offset by half an hour?  

> 
> The 400 you're seeing are duplications based on locality. Of the 86
> shown in Windows, all but 33 are dulplicate references to the same
> timezones.
> 
> For example, Windows has seperate listings for
> 
> Central America
> Central Time (US & Canada)
> Guadalahara, Mexico City, Monterry - New
> Guadalahara, Mexico City, Monterry - Old
> Saskatchewan
> 
> but they are all GMT-6
> 

Those are non-duplicate (and perhaps inaccurate, I'm not sure).  US time switches from standard to Daylight Savings earlier than Mexico, and switches back later, as of this year.  Reducing them to a single time zone will result in aberrant functionality in one or more locales.

Cheers,
Cliff


From deets at nospam.web.de  Fri Oct 19 07:19:54 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 19 Oct 2007 13:19:54 +0200
Subject: dynamic invoke
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<ffa25s$c9g$1@nemesis.news.tpi.pl>
	<1192791068.230349.104740@e34g2000pro.googlegroups.com>
Message-ID: <5nri6qFji28aU1@mid.uni-berlin.de>

 lukasz.f24 at gmail.com wrote:

> On 19 Oct, 11:45, Jarek Zgoda <jzg... at o2.usun.pl> wrote:
>> lukasz.... at gmail.com napisa?(a):
>>
>> > Is there any way (other then eval) to invoke a method by passing
>> > method name in a string.
>> > It's very simple in php:
>> > $oFoo = new Foo();
>> > $dynamiMethod = "bar";
>> > $oFoo->$dynamiMethod();
>>
>> > Unfortunately I can't find a good solution to do the same thing in
>> > python. Does it have some build-in function to do it?
>>
>> foo = getattr(module_or_object, 'function_name')
>> foo()
>>
>> --
>> Jarek Zgoda
>> Skype: jzgoda | GTalk: zg... at jabber.aster.pl | voice: +48228430101
>>
>> "We read Knuth so you don't have to." (Tim Peters)
> 
> Superb!
> I was lookig for something like this. Belive me or not but i spent
> lots of time looking for this simple solution :)

The above clearly is a solution to your problem. I just wonder if you _need_
it. PHP doesn't have the concept of a function reference. So you need to
store/use names.

But in Python you can do this:

def foo():
    print "foo"

callback = foo
callback()

As trivial this code is, it illustrates one thing: passing around functions
is as easy as passing around other values. So maybe you don't need a
function name. Only a suggestion to ponder about though, it might be that
your usecase is not suited for the above.

Diez


From mail at microcorp.co.za  Sat Oct  6 02:47:50 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 6 Oct 2007 08:47:50 +0200
Subject: Please Help me
References: <003701c80688$d79738f0$1a02a8c0@ERTF.ERTF.COM>
Message-ID: <01ec01c807ed$8f7c7100$03000080@hendrik>


Jean-Francois Canac  wrote:

8< -------------- duplicate request -------------------

see other answer.

- Hendrik



From pavlovevidence at gmail.com  Thu Oct 11 13:43:29 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Thu, 11 Oct 2007 10:43:29 -0700
Subject: "".join(string_generator()) fails to be magic
In-Reply-To: <mailman.71.1192084784.927.python-list@python.org>
References: <mailman.71.1192084784.927.python-list@python.org>
Message-ID: <1192124609.235260.193490@19g2000hsx.googlegroups.com>

On Oct 11, 2:26 am, Matt Mackal <m... at selenic.com> wrote:
> I have an application that occassionally is called upon to process
> strings that are a substantial portion of the size of memory. For
> various reasons, the resultant strings must fit completely in RAM.
> Occassionally, I need to join some large strings to build some even
> larger strings.

Do you really need a Python string?  Some functions work just fine on
mmap or array objects, for example regular expressions:

>>> import array
>>> import re
>>> a = array.array('c','hello, world')
>>> a
array('c', 'hello, world')
>>> m = re.search('llo',a)
>>> m
<_sre.SRE_Match object at 0x009DCB80>
>>> m.group(0)
array('c', 'llo')

I would look to see if there's a way to use an array or mmap instead.
If you have an upper bound for the total size, then you can reserve
the needed number of bytes.

If you really need a Python string, you might have to resort to a C
solution.


Carl Banks



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct  2 04:27:05 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 02 Oct 2007 10:27:05 +0200
Subject: Question on overriding implicit lookups
In-Reply-To: <1191338201.762723.72750@22g2000hsm.googlegroups.com>
References: <1191338201.762723.72750@22g2000hsm.googlegroups.com>
Message-ID: <4702930b$0$8908$426a74cc@news.free.fr>

David Ells a ?crit :
> In Python we have a wonderful facility for customizing attribute
> access by defining __getattr__ or __getattribute__ in our classes.
> Unfortunately (or perhaps fortunately, for reasons I don't know), this
> facility only works for explicit attribute access, i.e. accessing
> foo.bar. What I am in need of, for reasons I'll keep out of the
> discussion for now, is a similar facility for implicit attribute
> access, such as the call to foo.__len__ when something like len(foo)
> is executed. I would like some way to customize access during these
> implicit lookups without having to define each one in the class
> myself. Essentially what I am looking for is a mechanism like
> __getattribute__, only one that will work for these implicit lookups
> to functions like __len__, __str__, __getitem__, and so on. Hopefully
> my question makes sense.

An obvious solution would be to define "each one" of these magic methods 
in a mixin class. Else, here's a Q&D but working solution :

class Test(object):
     def _get_magic_attribute(self, name):
         return "YADDA YADDA"

     for _name in ('__len__', '__str__', '__repr__'):
         exec "%s = lambda self, _name='%s' : " \
               "self._get_magic_attribute(_name)" % (_name, _name)
     del _name

For a cleaner version, you may want to use a custom metaclass, but that 
seems a bit overkill to me.




From jjl at pobox.com  Thu Oct 11 14:29:12 2007
From: jjl at pobox.com (John J. Lee)
Date: Thu, 11 Oct 2007 18:29:12 GMT
Subject: urllib.ProxyHandler HTTPS issues
References: <1192078997.453819.323390@22g2000hsm.googlegroups.com>
Message-ID: <87641d8pzb.fsf@pobox.com>

Devraj <devraj at gmail.com> writes:

> Hi everyone,
>
> I have been reading various documents/posts on the web about handling
> proxy options in urllib2. Some of them suggest that urllib2 doesn't
> handle HTTPS and others say it does. I have successfully written code
> that relays HTTP connections via a proxy but have failed to do the
> same for HTTPS connections.

urllib2 does not support "HTTPS proxies" (it does not support use of
the CONNECT method).


> Can anyone confirm if urllib2 can handle HTTPS,

Yes, it can.


John


From grflanagan at yahoo.co.uk  Thu Oct 18 03:43:45 2007
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: Thu, 18 Oct 2007 00:43:45 -0700
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
Message-ID: <1192693425.381102.141680@i38g2000prf.googlegroups.com>

On Oct 18, 1:55 am, Debajit Adhikary <debaj... at gmail.com> wrote:
> I'm writing this little Python program which will pull values from a
> database and generate some XHTML.
>
> I'm generating a <table> where I would like the alternate <tr>'s to be
>
> <tr class="Even">
> and
> <tr class="Odd">
>
> What is the best way to do this?
>


from itertools import izip

def toggle(start=True):
    flag = start
    while 1:
        flag = not flag
        yield flag


CSS = ("even", "odd")

HTML = '<tr class="%s"><td>%d</td><td>%s</td></tr>'

result = [(1, 'One'), (2, 'two'), (3, 'Three'), (4, 'Four'), (5,
'Five')]

for flag, (id, name) in izip(toggle(), result):
    print HTML % (CSS[flag], id, name)


<tr class="even"><td>1</td><td>One</td></tr>
<tr class="odd"><td>2</td><td>two</td></tr>
<tr class="even"><td>3</td><td>Three</td></tr>
<tr class="odd"><td>4</td><td>Four</td></tr>
<tr class="even"><td>5</td><td>Five</td></tr>



From auzaar at gmail.com  Tue Oct 30 08:11:07 2007
From: auzaar at gmail.com (auzaar at gmail.com)
Date: Tue, 30 Oct 2007 05:11:07 -0700
Subject: Iteration for Factorials
In-Reply-To: <slrnfidvsg.skr.nick@irishsea.home.craig-wood.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<7xodeouga8.fsf@ruckus.brouhaha.com>
	<1193396435.916666.277770@50g2000hsm.googlegroups.com>
	<5oKdncgTz5YBBb_anZ2dnUVZ_obinZ2d@comcast.com>
	<1193731947.088651.324330@50g2000hsm.googlegroups.com>
	<slrnfidvsg.skr.nick@irishsea.home.craig-wood.com>
Message-ID: <1193746267.816210.123140@y42g2000hsy.googlegroups.com>

On Oct 30, 3:30 pm, Nick Craig-Wood <n... at craig-wood.com> wrote:
> Anurag <anuraguni... at gmail.com> wrote:
> >  What about this no map, reduce, mutiplication or even addition
> >  Its truly interative and You will need to interate till infinity if
> >  you want correct answer ;)
>
> >  deffactorial(N):
> >      """
> >      Increase I ...and go on increasing...
> >      """
> >      import random
>
> >      myNumer = range(N)
> >      count = 0
> >      I = 10000 #10**(N+1)
> >      for i in range(I):
> >          bucket = range(N)
> >          number = []
> >          for i in range(N):
> >              k = bucket[ random.randrange(0,len(bucket))]
> >              bucket.remove(k)
> >              number.append(k)
>
> >          if number == myNumer:
> >              count+=1
>
> >      return int(I*1.0/count+.5)
>
> ;-)
>
> Note you can write your middle loop as
>
>     for i in range(I):
>         number = myNumer[:]
>         random.shuffle(number)
>         if number == myNumer:
>             count+=1
>
> --
> Nick Craig-Wood <n... at craig-wood.com> --http://www.craig-wood.com/nick- Hide quoted text -
>
> - Show quoted text -

good :) i thinkif go on improving this we will have worlds' best
useless factorial function.

actually number = myNumer[:] can be moved out of the loop.



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 22 08:03:21 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 14:03:21 +0200
Subject: calling a function from string
In-Reply-To: <ffhvbm$10s$1@nemesis.news.tpi.pl>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
	<mailman.314.1193048742.13605.python-list@python.org>
	<ffhvbm$10s$1@nemesis.news.tpi.pl>
Message-ID: <471c9181$0$14475$426a74cc@news.free.fr>

Jarek Zgoda a ?crit :
> Trent Nelson napisa?(a):
>>> i have a function that I could like to call, but to make it more
>>> dynamic I am constructing a string first that could equivalent to the
>>> name of the function I wish to call. how could I do that? the string
>>> could might include name of the module.
>>>
>>> for example
>>>
>>> a_string = 'datetime.' + 'today()'
>>>
>>> how could I call a_string as function?
>> Use 'eval' in one of the following fashions:
>>
>> a_string_1 = 'datetime.' + 'today'
>> a_string_2 = 'datetime.' + 'today()'
>>
>> eval(a_string_1)()
>> eval(a_string_2)
> 
> Do not use eval(). Not only it's deprecated,

Chapter and verse ???

> it's also unsafe.

it's *potentially* unsafe. As long as the eval'd code comes from a 
trusted source, there should be no security problem.

I agree that eval is usually not the solution, but mainly because Python 
has far better (wrt/ readability and maintainance) options for this kind 
of things.



From lucaberto at libero.it  Mon Oct 15 08:24:09 2007
From: lucaberto at libero.it (luca72)
Date: Mon, 15 Oct 2007 05:24:09 -0700
Subject: PyQt ProgressBar
Message-ID: <1192451049.060044.166830@i13g2000prf.googlegroups.com>

Hello i have made anly one test like this:


 from time import sleep
 barra = QtGui.QProgressBar()
 barra.setMinimum(0)
 barra.setMaximum(10)
 for a in range(10):
       sleep(1)
       barra.setValue(a)
       app.processEvents()

But the bar remain fix to 0% don't increase.

can you tell me how to prooced

Regards

Luca



From crcarleRemoveThis at BOGUSsandia.gov  Tue Oct 23 20:06:36 2007
From: crcarleRemoveThis at BOGUSsandia.gov (Chris Carlen)
Date: Tue, 23 Oct 2007 17:06:36 -0700
Subject: Is this a wx bug?
Message-ID: <ffm2ab01btn@news4.newsguy.com>

Hi:


#!/usr/bin/env python

"""From listing 3.3 in 'wxPython in Action'
Demonstrates that something funny happens when you click&hold in the 
frame, then drag the mouse over the button window.  The 
wx.EVT_ENTER_WINDOW event is missed.  The wx.EVT_LEAVE_WINDOW event is 
NOT missed when you click&hold the mouse button over the button, and 
leave the button window."""

import wx

class MouseEventFrame(wx.Frame):
     def __init__(self, parent, id):
         wx.Frame.__init__(self, parent, id, title="Listing 3.3", 
size=(300, 100))
         self.panel = wx.Panel(self)
         self.button = wx.Button(self.panel, label="Not over", pos=(100, 
15))
         self.Bind(wx.EVT_BUTTON, self.OnButtonClick, self.button)
         self.button.Bind(wx.EVT_ENTER_WINDOW, self.OnEnterWindow)
         self.button.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)

     # This is not critical to demonstrating the 'bug', but just provides
     # feedback that the wx.EVT_BUTTON events are working correctly
     # in relation to entering/leaving the button window.
     def OnButtonClick(self, event):
         if self.panel.GetBackgroundColour() == "Green":
             self.panel.SetBackgroundColour("Red")
         else: self.panel.SetBackgroundColour("Green")
         self.panel.Refresh()

     def OnEnterWindow(self, event):
         self.button.SetLabel("Over")
         event.Skip()

     def OnLeaveWindow(self, event):
         self.button.SetLabel("Not over")
         event.Skip()


if __name__ == '__main__':
     app = wx.PySimpleApp()
     frame = MouseEventFrame(None, id=-1)
     frame.Show()
     app.MainLoop()



-- 
Good day!

________________________________________
Christopher R. Carlen
Principal Laser&Electronics Technologist
Sandia National Laboratories CA USA
crcarleRemoveThis at BOGUSsandia.gov
NOTE, delete texts: "RemoveThis" and
"BOGUS" from email address to reply.


From jeremit0 at gmail.com  Fri Oct 12 15:53:15 2007
From: jeremit0 at gmail.com (jeremito)
Date: Fri, 12 Oct 2007 19:53:15 -0000
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192199862.532118.306290@t8g2000prg.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
	<1192199862.532118.306290@t8g2000prg.googlegroups.com>
Message-ID: <1192218795.540056.51700@k35g2000prh.googlegroups.com>

On Oct 12, 10:37 am, TYR <a.harrow... at gmail.com> wrote:
> On Oct 11, 4:17 pm, Tim Golden <m... at timgolden.me.uk> wrote:
>
>
>
> > jeremito wrote:
> > > On Oct 11, 10:43 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > >> jeremito wrote:
> > >>> My Python script makes a bunch of images that I want to use as frames
> > >>> in a movie.  I've tried searching for a module that will take these
> > >>> images and put them together in a Quicktime or mpeg movie, but haven't
> > >>> found anything.  My images are currently pdfs, but I could make them
> > >>> into just about anything if needed.
> > >>> Is there a module, or example of how to do this?
> > >>http://pymedia.org/
>
> > >> Diez
>
> > > That initially looked promising, but it looks like nobody is working
> > > on it anymore and it doesn't compile on Mac.  (I should have mentioned
> > > I am using a Mac.)  Any other suggestions?
>
> > Not really a Python module but... run them
> > through mencoder? (Haven't tried it but it
> > seems to be saying it's possible).
>
> >http://www.mplayerhq.hu/DOCS/man/en/mplayer.1.html#EXAMPLES%20OF%20ME...
>
> > TJG
>
> NodeBox; nodebox.org
>
> GUI application that creates either PDFs or Quicktime vids from python
> code. Unix/Linux/MacOS.

I actually found NodeBox in my googling.  This seems to be a stand
alone application.  I need to be able to convert my images to a movie
from my code I wrote myself.

Thanks,
Jeremy



From bbxx789_05ss at yahoo.com  Fri Oct  5 13:09:35 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: Fri, 05 Oct 2007 10:09:35 -0700
Subject: unit testing
In-Reply-To: <fe3dcd$8s2$1@solaris.cc.vt.edu>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
Message-ID: <1191604175.903042.228140@g4g2000hsf.googlegroups.com>

What are some strategies for unit testing a function that obtains user
input?

Thanks.



From danfolkes at gmail.com  Tue Oct 16 09:41:52 2007
From: danfolkes at gmail.com (danfolkes)
Date: Tue, 16 Oct 2007 13:41:52 -0000
Subject: while statements
In-Reply-To: <mailman.62.1192541292.13605.python-list@python.org>
References: <mailman.62.1192541292.13605.python-list@python.org>
Message-ID: <1192542112.711284.51530@z24g2000prh.googlegroups.com>

On Oct 16, 9:28 am, Shawn Minisall <trekker... at comcast.net> wrote:
> I just learned about while statements and get why you place them around
> inputs for validation, but I'm a little lost on exactly where to place
> it with what condition in this program where the number of fat grams
> exceeds the total number of calories so that it loops back and asks you
> the two questions again instead of just saying The calories or fat grams
> were incorrectly entered.  Any idea's?
>
> thx
>
> while cal <=0:
>     #Prompt for calories
>         cal = input("Please enter the number of calories in your food: ")
>         if cal <=0:
>             print "Error.  The number of calories must be positive."
>
>     #Prompt for fat
>         fat = input("Please enter the number of fat grams in your food: ")
>         if fat <=0:
>             print "Error.  The number of fat grams must be positive."
>
>     #Calculate calories from fat
>         calfat = float(fat) * 9
>
>     #Calculate number of calories from fat
>         caldel = calfat / cal
>
>     #change calcent decimal to percentage
>         calcent = caldel * 100
>
>     #evaluate input
>     if calfat > cal:
>         print "The calories or fat grams were incorrectly entered."
>
>     elif calcent > 0 and calfat < cal:
>
>         if caldel <= .3:
>             print "Your food is low in fat."
>         elif caldel >= .3:
>             print "Your food is high in fat."
>
>     #Display percentage of calories from fat
>         print "The percentage of calories from fat in your food is %",
> calcent

Instead of: if(cal<=0)

you could do :
cal=0
while cal<=0:
    cal = int(raw_input("Please enter the number of calories in your
food: "))

that would make sure that your input is > 0



From Florian.Lindner at xgm.de  Thu Oct 18 16:40:53 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Thu, 18 Oct 2007 13:40:53 -0700
Subject: Problem with format string / MySQL cursor
In-Reply-To: <mailman.189.1192738097.13605.python-list@python.org>
References: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
	<1192736676.035569.188300@e9g2000prf.googlegroups.com>
	<mailman.189.1192738097.13605.python-list@python.org>
Message-ID: <1192740053.589994.109050@q5g2000prf.googlegroups.com>

On 18 Okt., 22:08, Paul McNett <p... at ulmcnett.com> wrote:
> timar... at gmail.com wrote:
> > On Oct 19, 7:32 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> >> Hello,
> >> I have a string:
>
> >> INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
> >> `gid`, `password`) VALUES (%s, %s, %s, %s, %i, %i, %s)
>
> >> that is passed to a MySQL cursor from MySQLdb:
>
> >> ret = cursor.execute(sql, paras)
>
> >> paras is:
>
> >> ('flindner', 'te... at florian-lindner.de', '/home/flindner/', '/home/
> >> flindner/Mail/test', 1001, 1001, '123')
>
> >> But that gives me an error:
>
> >> Traceback (most recent call last):
> >>   File "account.py", line 188, in ?
> >>     main()
> >>   File "account.py", line 33, in main
> >>     execute(action, account_type, options)
> >>   File "account.py", line 129, in execute
> >>     executeSQL(sql, options.username, options.login, options.home,
> >> options.directory, options.uid, options.gid, options.password)
> >>   File "/home/flindner/common.py", line 29, in executeSQL
> >>     ret = cursor.execute(sql, paras)
> >>   File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line
> >> 148, in execute
> >>     query = query % db.literal(args)
> >> TypeError: int argument required
>
> >> I don't see errors in the format string or some other problem....
>
> >> What's wrong?
> > You should be using '?' for parameter bindings in your sql string not
> > python format specifiers (you are after all writing sql here not
> > python).
>
> > INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
> > `gid`, `password`) VALUES (?, ?, ?, ?, ?, ?, ?)
>
> Sorry Tim, but that isn't correct:
>
> >>> import MySQLdb
> >>> MySQLdb.paramstyle
>
> 'format'
>
> Florian, what happens when you replace your %i with %s?

That works! Thanks! But a weird error message for this solution...



From deets at nospam.web.de  Wed Oct 31 08:16:10 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 31 Oct 2007 13:16:10 +0100
Subject: Creating a temporary file in Python
References: <1193832119.872710.108920@k79g2000hse.googlegroups.com>
Message-ID: <5ora0aFo7tsmU1@mid.uni-berlin.de>

looping wrote:

> Hi,
> 
> I want to create a temporary file, read it in an external command and
> finally delete it (in Windows XP).
> 
> I try to use tempfile module but it doesn't work, the file couldn't be
> open by my other process (error like: SP2-0310: unable to open file "c:
> \docume~1\looping\locals~1\temp\tmpau81-s.sql")
> Is there a way to make it work or I have to manually manage
> everything ?
> 
> My non working code:
> 
> f = tempfile.NamedTemporaryFile(suffix='.sql')
> f.write(txt)
> f.flush()
> p = subprocess.Popen([SQL_PLUS, '-s', dsn, '@', SQL_PLUS_SCRIPT,
> f.name],
>       stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
> p.wait()
> f.close()

I'm not an expert, but I think you need to close the file first - you under
windows here, which can be picky about such stuff AFAIK. Or maybe there is
some other mode-specifier.

Diez


From duncan.booth at invalid.invalid  Tue Oct  9 04:32:05 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 9 Oct 2007 08:32:05 GMT
Subject: python bytecode questions.
References: <1191918011.685441.151180@o3g2000hsb.googlegroups.com>
Message-ID: <Xns99C46101BD930duncanbooth@127.0.0.1>

warhero <beingthexemplarylists at gmail.com> wrote:

> First question, I can't seem to get any python bytecode to be
> produced. I've tried different techniques from chapter 30.8 to chapter
> 31 of the python guide.. I was under the assumption that after
> compiling a file, it would output a pyc file, but where does it go?
> Any help would be appreciated.

Any time you import a python file it will be compiled (if it hasn't already 
been compiled) and a .pyc file will be generated in the same directory as 
the source file (so long as you can write a file to that directory).

N.B. This only happens when you import a module: when you run a .py file as 
a script it is still compiled, but no .pyc is output. If this worries you 
then write a very short .py file which just imports the main program 
module and calls some startup function.

> 
> Second, Are there any other projects out for bundling python bytecode
> files, making it able to use a couple files to distribute an entire
> app??  I saw one of the effbot site but it's old as it was written for
> 1.4..

For Windows you can make standalone executables with py2exe 
(http://www.py2exe.org/)

More generally, assuming that Python is already installed, the trend seems 
to be for packaging your code as a Python egg 
(http://peak.telecommunity.com/DevCenter/PythonEggs).

> Third, can distributing code in pyc files, speed up the application?
> Or would speed increases only be seen upon application initialization?
> As an example, let's say I'm running an application server, would
> distributing the source in some pyc files with a bootstrapper be any
> faster overall, or just on init??
> 
No, the only gain is that you save the initial compile.


From scott.hendryx.clothes at sbcglobal.net  Fri Oct  5 07:31:41 2007
From: scott.hendryx.clothes at sbcglobal.net (MoParMaN)
Date: Fri, 5 Oct 2007 06:31:41 -0500
Subject: Dear Hendryx and Leach
References: <470541a7$0$47118$892e7fe2@authen.yellow.readfreenews.net>
	<0llag31er762a2tsdfcs8t1lq9ms1ksghq@4ax.com>
	<QgeNi.259$sm6.23@nlpi069.nbdc.sbc.com>
	<Xns99BFC2342C5CDfnord23@216.168.3.44>
Message-ID: <ygpNi.457$wF3.66@nlpi061.nbdc.sbc.com>


"Jay Furr" <jfurr-nospam at nospam-furrs.org> wrote in message 
news:Xns99BFC2342C5CDfnord23 at 216.168.3.44...
> "MoParMaN" <scott.hendryx.clothes at sbcglobal.net> wrote in news:QgeNi.259
> $sm6.23 at nlpi069.nbdc.sbc.com:
>
>> I will not screw with the cardio doctor again after my stressless stress
>> test.  Jesus fucking christ, I thought I died for 45 seconds.
>
> Can I have your liver, then?
>
AAAHHHHAAAA, it's about the size of a basketball.

-- 
------MoParMaN------
---Scud Coordinates 32.61204 North 96.92989 West---
--Remove Clothes to Reply!--

TEDWARD Said:

Eggs are really good for you.  They have all the nutrition needed to make a 
chicken.




From see at sig.below  Tue Oct  9 01:59:28 2007
From: see at sig.below (Barb Knox)
Date: Tue, 09 Oct 2007 18:59:28 +1300
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <see-36543E.18592809102007@lust.ihug.co.nz>

In article <1191906949.179197.217470 at 57g2000hsv.googlegroups.com>,
 gnuist006 at gmail.com wrote:

> Again I am depressed to encounter a fundamentally new concept that I
> was all along unheard of.

Don't be depressed about that.  There are countless concepts out there 
they you haven't yet heard of.

> Its not even in paul graham's book where i
> learnt part of Lisp. Its in Marc Feeley's video.
> 
> Can anyone explain:
> 
> (1) its origin

Lambda calculus.  Instead of function A returning to its caller, the 
caller provides an additional argument (the "continuation") which is a 
function B to be called by A with A's result(s).  In pure "continuation 
style" coding, nothing ever "returns" a result.

It is easy to mechanically transform normal function-style lambda 
calculus into continuation-style, but the reverse is not so.

> (2) its syntax and semantics in emacs lisp, common lisp, scheme
> (3) Is it present in python and java ?

Java, sort of.  For example, the Run interface.
Python, I don't know.

> (4) Its implementation in assembly. for example in the manner that
> pointer fundamentally arises from indirect addressing and nothing new.
> So how do you juggle PC to do it.

You can have a "spaghetti stack", or keep continuation data-structures 
in the heap.

> (5) how does it compare to and superior to a function or subroutine
> call. how does it differ.

This sounds like homework.  What do you have so far?

> Thanks a lot.
> 
> (6) any good readable references that explain it lucidly ?

Google?

-- 
---------------------------
|  BBB                b    \     Barbara at LivingHistory stop co stop uk
|  B  B   aa     rrr  b     |
|  BBB   a  a   r     bbb   |    Quidquid latine dictum sit,
|  B  B  a  a   r     b  b  |    altum viditur.
|  BBB    aa a  r     bbb   |   
-----------------------------


From jjl at pobox.com  Wed Oct 17 16:13:01 2007
From: jjl at pobox.com (John J. Lee)
Date: Wed, 17 Oct 2007 20:13:01 GMT
Subject: urlgrabber cookie handling?
References: <1192593158.188757.129010@i38g2000prf.googlegroups.com>
Message-ID: <878x61zeia.fsf@pobox.com>

Devraj <devraj at gmail.com> writes:

> Hi everyone,
>
> I have been battling to make my code work with a HTTPS proxy, current
> my code uses urllib2 to to most things and works well, except that
> urllib2 doesn't handle HTTPS proxies.
>
> Urlgrabber (http://linux.duke.edu/projects/urlgrabber/help/
> urlgrabber.grabber.html) looks very promising except that I can find a
> way to handle cookies in urlgrabber. Is there a way urlgrabber can use
> a HTTPCookieProcess or cookielib.CookieJar object to handle cookies?

I don't see a nice way.  But then I don't see any HTTPS proxy support
in urlgrabber... (I looked at version 3.1.0).

There is a recipe or two on ASPN showing how to support HTTPS proxies
with urllib2, which gives an idea how to do it, though the code is a
bit rough (I'd post some code myself, but I did it for work).


John


From __peter__ at web.de  Thu Oct 25 05:18:17 2007
From: __peter__ at web.de (Peter Otten)
Date: Thu, 25 Oct 2007 11:18:17 +0200
Subject: local variable referenced before assignment
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
Message-ID: <ffpn0n$gb8$02$1@news.t-online.com>

Pete Bartonly wrote:

> Quick question, probably quite a simple matter. Take the follow start of 
> a method:
> 
> 
> def review(filesNeedingReview):
> 
>      for item in filesNeedingReview:
>          (tightestOwner, logMsg) = item
> 
>          if (logMsg != None):
>              for logInfo in logMsg.changed_paths:
> 
> 
> This generates the error:
> 
>    UnboundLocalError: local variable 'logMsg' referenced before assignment
> 
> I thought I'd assigned it in the "(tightestOwner, logMsg) = item" line - 
> so in the python interpreter complaining about the fact this assignment 
> might not go well?

My crystal ball tells me that you are not posting the actual code where
for... and if... are indented to the same level. This triggers the error
when review() is called with an empty sequence.

Please remember to copy and paste both code and traceback next time.

Peter


From python.list at tim.thechases.com  Wed Oct 10 16:45:47 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 10 Oct 2007 15:45:47 -0500
Subject: for loop question
In-Reply-To: <1192047900.124690.284890@19g2000hsx.googlegroups.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>	<mailman.38.1192046903.927.python-list@python.org>
	<1192047900.124690.284890@19g2000hsx.googlegroups.com>
Message-ID: <470D39FB.8060700@tim.thechases.com>

Paul Hankin wrote:
> On Oct 10, 9:12 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
>>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
>>  >>> for a,b in pairs:
>> ...     print a,b
> 
> for a, b in zip(test, test[1:]):
>   print a, b

Very nice!

I second this solution as better than my original.  The only 
"improvement" (in quotes, because it might be more work/opacity 
than the problem merits) might be to use izip/islice from 
itertools to do the evaluation lazily if "test" gets large:

   from itertools import izip, islice
   for a,b in izip(test, islice(test, 1, None)):
     print a,b

[side note/question]
What's with islice having the first optional paramenter expand as 
the stop/third argument by default:

   islice(test, 1) -> stop at 1
   islice(test, 1, 2) -> start at 1, stop at 2

islice (in python2.4) doesn't even take kword params, so you 
can't force it like

   islice(test, start=1)

but instead must specify a stop parameter, even if it's None:

   islice(test, 1, None)

Seems bogus, IMHO.

-tkc





From bergv at math.uiuc.edu  Fri Oct 19 16:58:21 2007
From: bergv at math.uiuc.edu (Maarten Bergvelt)
Date: Fri, 19 Oct 2007 20:58:21 +0000 (UTC)
Subject: DIAGNOSIS: Racism moves back to Denmark from South Africa
References: <1192661865.485820.253030@v29g2000prd.googlegroups.com>
	<LA8Si.12763$412.6551@weber.videotron.net>
Message-ID: <slrnfhi6jd.5pf.bergv@u19.math.uiuc.edu>

On 2007-10-19, mich <copkat at vidotron.cr> wrote:
>
><thermate at india.com> wrote in message 
> news:1192661865.485820.253030 at v29g2000prd.googlegroups.com...
>>
>> INCISIVE ANALYSIS: The dismantlement of Apartheid Regime in South
>> Africa sent the racist Dutch Afrikaners back to Denmark where they are
>> spreading their racist ideology -- The Apartheid "Christianity" :
>
>
> The Dutch went back to Denmark? 

Sure, Copenhagen is the capital of the Netherlands, any American
school child knows that.

-- 
Maarten Bergvelt		


From gneuner2/ at comcast.net  Thu Oct  4 01:33:11 2007
From: gneuner2/ at comcast.net (George Neuner)
Date: Thu, 04 Oct 2007 01:33:11 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<47041303$0$13930$fa0fcedb@news.zen.co.uk>
Message-ID: <8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>

On Wed, 03 Oct 2007 23:07:32 +0100, dan at telent.net wrote:

>George Neuner wrote:
>> Symbolism over substance has become the mantra
>> of the young.
>
>"Symbolism: The practice of representing things by means of symbols or 
>of attributing symbolic meanings or significance to objects, events, or 
>relationships."
>
>One might even suggest that all written language is based on the use of 
>words as symbols.
>
>"Substance: (2)
>    a. Essential nature; essence.
>    b. Gist; heart."
>
>"Mantra: A sacred verbal formula repeated in prayer, meditation, or 
>incantation, such as an invocation of a god, a magic spell, or a 
>syllable or portion of scripture containing mystical potentialities."
>
>Perhaps the young people you're referring to are not the same young 
>people that I know, because I've never even heard of a religion whose 
>object of reverence is meta-level analysis of language.

The Christian Bible says "In the beginning was the Word, and the Word
was with God, and the Word was God." John 1:1.  Theologians and
philosophers have been writing about it for quite a few centuries.


Or, how about politics?  Another example from the Judeo-Christian
Bible (that is, from the Old Testament), politicking was the sin that
resulted in Lucifer's fall from God's grace.
[Yeah, I know the official story is that Lucifer's sin was envy.
Trust me ... I was there.  God didn't have a clue until Lucifer went
and organized the rally to protest God's policy on human souls (back
then God trusted his angels and was not in the habit of reading their
minds).  He didn't find out that Lucifer was behind the protests until
after Michael's police units had put down the riots.  When it was all
over, God didn't care that Lucifer had been envious or prideful or
lustful ... He was simply pissed that Lucifer had protested His
policies.

Shortly after He outlawed beer in Heaven because many of the rioters
had been drunk.  Then He started a program of wire-tapping without
warrants to spy on innocent angels.  I was ready to leave when He
closed the pubs, the illegal wire-taps just clinched it.]


>Tell me, do you know what "hyperbole" means?

Yes I do.


George
--
for email reply remove "/" from address


From heikki at osafoundation.org  Fri Oct 26 14:26:21 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Fri, 26 Oct 2007 11:26:21 -0700
Subject: Eclipse Plugins
In-Reply-To: <mailman.474.1193402575.13605.python-list@python.org>
References: <-5528451693797282245@unknownmsgid>
	<mailman.474.1193402575.13605.python-list@python.org>
Message-ID: <y-WdnU51FfbNrL_anZ2dnUVZ_q2dnZ2d@comcast.com>

Martin Marcher wrote:
> 2007/10/26, Robert Rawlins - Think Blue <robert.rawlins at thinkbluemedia.co.uk>:
>> For my other languages, such as HTML, ColdFusion, JAVA etc I make good use
>> of the Eclipse SDK, and I'm looking for some advice on the best and most
>> popular python plug-ins available, what would you suggest? I downloaded one
>> called PyDev which looked ok but nothing too exciting.

I'm a very happy user of PyDev. The main reason I got PyDev was to get
automatic error reporting in the editor (it uses PyLint for this, you
need to install PyLint first). The debugger is also pretty good
(supports even multiple threads). Exceptions could perhaps be handled
better, and getting a shell in the debugger context is only available in
the commercial extension to PyDev I think.

Having come from (X)Emacs, perhaps my IDE needs are primitive. I've
tried to use some automatic refactoring tools but support that that is
pretty primitive for Python at the moment.

PyDev is open source, and the developer is pretty responsive, so if you
could describe what is missing there is a good chance it would get
implemented. I even fixed two bugs myself, my first ever real Java
contribution...

-- 
  Heikki Toivonen


From Scott.Daniels at Acm.Org  Thu Oct 25 08:28:00 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Thu, 25 Oct 2007 05:28:00 -0700
Subject: Parallel insert to postgresql with thread
In-Reply-To: <5obctcFm7sogU1@mid.uni-berlin.de>
References: <1193310044.750654.157320@22g2000hsm.googlegroups.com>
	<5obctcFm7sogU1@mid.uni-berlin.de>
Message-ID: <13i12q276igp0df@corp.supernews.com>

Diez B. Roggisch wrote:
> Abandoned wrote:
> 
>> Hi..
>> I use the threading module for the fast operation. But ....
[in each thread]
>> def save(a,b,c):
>>             cursor.execute("INSERT INTO ...
>>             conn.commit()
>>             cursor.execute(...)
>> How can i insert data to postgresql the same moment ?...
> 
> DB modules aren't necessarily thread-safe. Most of the times, a connection
> (and of course their cursor) can't be shared between threads.
> 
> So open a connection for each thread.

Note that your DB server will have to "serialize" your inserts, so
unless there is some other reason for the threads, a single thread
through a single connection to the DB is the way to go.  Of course
it may be clever enough to behave "as if" they are serialized, but
mostly of your work parallelizing at your end simply creates new
work at the DB server end.

-Scott David Daniels
Scott.Daniels at Acm.Org


From bignose+hates-spam at benfinney.id.au  Wed Oct  3 23:41:25 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 04 Oct 2007 13:41:25 +1000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
	<mailman.1489.1191464586.2658.python-list@python.org>
Message-ID: <87hcl7r1ga.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> You and I know that the semantics of Python names are precisely
> those of (to use an Algol 68 term, unless I am mistaken)
> automatically dereferenced pointers to objects of arbitrary type.

Yes. That's exactly why it's wrong to refer to them as pointers. They
don't behave like the pointers in other languages, which are *not*
"automatically-dereferenced", nor "to objects of arbitrary type".

It's misleading to talk about a Python name as a "pointer" without
those qualifiers, because they're *not* implicit in programmers'
understanding of that term.

If you want to continually refer to them as
"automatically-dereferenced pointers to objects of arbitrary type", by
all means go ahead. That at least *does* fit the semantics. But the
simple term "pointer" does *not* describe them in the absence of those
necessary and non-default qualifiers, and is misleading.

-- 
 \     "I wish there was a knob on the TV to turn up the intelligence. |
  `\      There's a knob called 'brightness' but it doesn't work."  -- |
_o__)                                              Eugene P. Gallagher |
Ben Finney


From martin at marcher.name  Fri Oct 26 08:49:38 2007
From: martin at marcher.name (Martin Marcher)
Date: Fri, 26 Oct 2007 14:49:38 +0200
Subject: "Standard" Full Text Search Engine
Message-ID: <5fa6c12e0710260549y2cf6e1c2y93593f8225a6f662@mail.gmail.com>

Hello,

is there something like a standard full text search engine?

I'm thinking of the equivalent for python like lucene is for java or
ferret for rails. Preferrably something that isn't exactly a clone of
one of those but more that is python friendly in terms of the API it
provides.

Things I'd like to have:

 * different languages are supported (it seems most FTSs do only english)
 * I'd like to be able to provide an identifier (if I index files in
the filesystem that would be the filename, or an ID if it lives in a
database, or whatever applies)
 * I'd like to pass it just some (user defined) keywords with content,
the actual content (as string, or list of strings or whatever) and to
retrieve the results by search by keyword
 * something like a priority should be assignable to different fields
(like field: title(priority=10, content="My Draft"),
keywords(priority=50, list_of_keywords))

Unnecessary:

 * built-in parsing of different files

The "standard" I'm referring to would be something with a large and
active user base. Like... WSGI is _the_ thing to refer to when doing
webapps it should be something like $FTS-Engine is _the_ engine to
refer to.

any hints?

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From lasses_weil at klapptsowieso.net  Thu Oct 25 11:31:15 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 25 Oct 2007 17:31:15 +0200
Subject: [0..9] list (range) syntax
In-Reply-To: <pan.2007.10.25.00.22.21.1912@vscht.cz>
References: <pan.2007.10.24.22.44.28.712782@vscht.cz>
	<471fd26a$0$13110$9b4e6d93@newsspool2.arcor-online.net>
	<pan.2007.10.25.00.22.21.1912@vscht.cz>
Message-ID: <4720b6c4$0$27138$9b4e6d93@newsspool1.arcor-online.net>

Michal Bozon wrote:
> The .. syntax was not meant only as something
> which would include the last item,
> but also/rather a range list syntactic shortcut:
> 
> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] -->
> [0, 1, ... 9, 10] -->
> [0..10]
> 
OK, I see.

But I still fail to see where this is useful. All these 3 statements 
create a list from 0 to 10 including.

If, however, the ".." operator would recognize patterns before and after 
itself, I could see your point (e.g. [0, 1, 2, 4, 8, .. 128, 256, 512]). 
Buts thats pretty academic, maybe good for a specialized computation 
language.

And I feel that my "write a function" argument still holds.

/W


From google at mrabarnett.plus.com  Mon Oct  8 18:46:56 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Mon, 08 Oct 2007 15:46:56 -0700
Subject: Variable scoping rules in Python?
In-Reply-To: <470a4758$0$9150$426a74cc@news.free.fr>
References: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
	<470a4758$0$9150$426a74cc@news.free.fr>
Message-ID: <1191883616.517211.95400@19g2000hsx.googlegroups.com>

On Oct 8, 4:06 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> joshua.dav... at travelocity.com a ?crit :
>
> > Ok, I'm relatively new to Python (coming from C, C++ and Java).  I'm
> > working on a program that outputs text that may be arbitrarily long,
> > but should still line up, so I want to split the output on a specific
> > column boundary.
>
> FWIW :http://docs.python.org/lib/module-textwrap.html
>
>
>
>
>
> >  Since I might want to change the length of a column,
> > I tried defining the column as a constant (what I would have made a
> > "#define" in C, or a "static final" in Java).  I defined this at the
> > top level (not within a def), and I reference it inside a function.
> > Like this:
>
> > COLUMNS = 80
>
> > def doSomethindAndOutputIt( ):
> >   ...
> >   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
> >     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
> >     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
> >     ..
>
> > etc. etc.  It works fine, and splits the output on the 80-column
> > boundary just like I want.
>
> > Well, I decided that I wanted "COLUMNS = 0" to be a special "don't
> > split anywhere" value, so I changed it to look like this:
>
> > COLUMNS = 80
>
> > def doSomethindAndOutputIt( ):
> >   ...
> >   if COLUMNS == 0:
> >     COLUMNS = len( output[ 0 ] )
>
> >   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
> >     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
> >     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
> >     ..
>
> Since you don't want to modify a global (and even worse, a CONSTANT),
> the following code may be a bit cleaner:
>
> def doSomethindAndOutputIt( ):
>    ...
>    if COLUMNS == 0:
>       columns = len( output[ 0 ] )
>    else:
>       columns = COLUMNS
>    for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
>       print output[0][ i * columns : i * columns + ( columns - 1 ) ]
>    ..
>
[snip]
range() can accept 3 arguments (start, stop and step) so you could
write:

    for i in range( 0, len( output[0] ), columns ):
       print output[0][ i : i + columns ]
    ..



From fantus at poczta.fm  Tue Oct  9 16:01:47 2007
From: fantus at poczta.fm (Fantus)
Date: Tue, 09 Oct 2007 22:01:47 +0200
Subject: tinyp2p - trying to get it to work
In-Reply-To: <oqcot4-mkp.ln1@pluto.solar-empire.de>
References: <febk9e$gfe$1@nemesis.news.tpi.pl>
	<oqcot4-mkp.ln1@pluto.solar-empire.de>
Message-ID: <fegmbd$no4$1@atlantis.news.tpi.pl>

Marc Christiansen pisze:

> 
> I had a (not so quick) look. The code proves its point (i.e. writing a
> very small p2p application is possible), but it is horrible. With only
> one server, the code is broken; maybe it works using multiple servers, I
> didn't test. A quick fix seems to be to change the line
>     pr() and [aug(s) for s in aug(pr()[0])]
> to
>     pr() and [aug(s) for s in aug(pr()[0])] or pr([myU])
> 
> Please don't take tinyp2p.py as an example on writing python. 
> 
> HTH Marc


Ok, this seems to work "fine" (as much as a program designed to be 
minimalistic can do) except it can't download files larger than 10kb.

It looks like a problem with SimpleXMLRPCServer (or at least I think so...)

While trying to download file larger than 10kb the server itself doesn't 
crash but generates output like this:


----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 44817)
Traceback (most recent call last):
   File "SocketServer.py", line 222, in handle_request
     self.process_request(request, client_address)
   File "SocketServer.py", line 241, in process_request
     self.finish_request(request, client_address)
   File "SocketServer.py", line 254, in finish_request
     self.RequestHandlerClass(request, client_address, self)
   File "SocketServer.py", line 521, in __init__
     self.handle()
   File "BaseHTTPServer.py", line 316, in handle
     self.handle_one_request()
   File "BaseHTTPServer.py", line 310, in handle_one_request
     method()
   File "SimpleXMLRPCServer.py", line 445, in do_POST
     self.wfile.write(response)
   File "socket.py", line 248, in write
     self.flush()
   File "socket.py", line 235, in flush
     self._sock.sendall(buffer)
error: (104, 'Connection reset by peer')
----------------------------------------


The client that was trying to make a download generates this:

Traceback (most recent call last):
   File "backup5.py", line 75, in ?
     (lambda fi:fi.write(proxy(url).f(pw(url),2,fn)) or 
fi.close())(file(fn,"wc"))
   File "backup5.py", line 75, in <lambda>
     (lambda fi:fi.write(proxy(url).f(pw(url),2,fn)) or 
fi.close())(file(fn,"wc"))
   File "/usr/lib/python2.4/xmlrpclib.py", line 1096, in __call__
     return self.__send(self.__name, args)
   File "/usr/lib/python2.4/xmlrpclib.py", line 1383, in __request
     verbose=self.__verbose
   File "/usr/lib/python2.4/xmlrpclib.py", line 1147, in request
     return self._parse_response(h.getfile(), sock)
   File "/usr/lib/python2.4/xmlrpclib.py", line 1281, in _parse_response
     p.feed(response)
   File "/usr/lib/python2.4/xmlrpclib.py", line 527, in feed
     self._parser.Parse(data, 0)
xml.parsers.expat.ExpatError: not well-formed (invalid token): line 5, 
column 15


Should I post this in a separate thread or maybe one of experts visiting 
this group will take a look and hopefully solve my problem?

Thank you in advance.


From carsten at uniqsys.com  Wed Oct 10 17:17:04 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 10 Oct 2007 17:17:04 -0400
Subject: for loop question
In-Reply-To: <496954360710101403p6b057a07le3f6dd0fe03d770@mail.gmail.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<1192047136.3388.19.camel@dot.uniqsys.com>
	<496954360710101327s7ee23520u9bb4d74833110071@mail.gmail.com>
	<1192048912.3388.27.camel@dot.uniqsys.com>
	<496954360710101403p6b057a07le3f6dd0fe03d770@mail.gmail.com>
Message-ID: <1192051024.3388.40.camel@dot.uniqsys.com>

On Wed, 2007-10-10 at 16:03 -0500, Robert Dailey wrote:
> I've tried everything to make the original CSV module work. It just
> doesn't. I've tried UTF-16 encoding

What do you mean, "tried?" Don't you know what the file is encoded in?

>  (which works fine with codecs.open()) but when I pass in the file
> object returned from codecs.open() into csv.reader(), the call to
> reader.next() fails because it says something isnt' in the range of
> range(128) or something (Not really an expert on Unicode so I'm not
> sure of the meaning). I would use CSV if I could!

That's because the codec-file object feeds it decoded Unicode strings,
but the CSV module wants to work with encoded octet strings, so it tries
to encode the unicode string with the default codec. The default codec
is ASCII, which can't represent characters with code points greater than
127.

Instead of passing the file object directly to the csv parser, pass in a
generator that reads from the file and explicitly encodes the strings
into UTF-8, along these lines:

def encode_to_utf8(f):
    for line in f:
        yield line.encode("utf-8")

There may be a fundamental problem with this approach that I can't
foresee at the moment, but it's worth a try when your alternative is to
build a Unicode-aware CSV parser from scratch.

Hope this helps,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From happyhondje at gmail.com  Thu Oct 25 18:33:40 2007
From: happyhondje at gmail.com (happyhondje at gmail.com)
Date: Thu, 25 Oct 2007 22:33:40 -0000
Subject: An efficient, pythonic way to calculate result sets
In-Reply-To: <1193337893.635877.208050@v3g2000hsg.googlegroups.com>
References: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
	<1193337893.635877.208050@v3g2000hsg.googlegroups.com>
Message-ID: <1193351620.822061.194040@50g2000hsm.googlegroups.com>

On Oct 25, 8:44 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> On Oct 25, 10:31 am, happyhon... at gmail.com wrote:
>
>
>
> > Hello everyone,
>
> > I've got a little issue, both programming and performance-wise. I have
> > a set, containing objects that refer to other sets. For example, in a
> > simple notation: (<a, b, c>, <d, e>) (or in a more object-like
> > display: set(obj1.choices=set(a, b, c) ). There may be obj1..objN
> > objects in the outer set, and the amount of items in the choices sets
> > could also reach a high number. The objects in the choices sets might
> > overlap.
>
> > Now I want to have all possible combinations, like this: (a, d), (b,
> > d), (c, d), (a, e), (b, e), (c, e).
>
> > However, I've got a few catches that make an already (icky) recursive
> > function worse to use.
>
> > First of all, I want to be able to only choose things so that the
> > outer 'result sets' have the same length. For example, if you'd have
> > (<a, b>, <a, c>), you might pick (a, a) with a simple algorythm, the
> > basic behaviour of sets reducing it to (a) and thus having an improper
> > length. I could add yet another loop after calculating everything to
> > throw out any result sets with the improper length, but that would be
> > highly inefficient.
>
> Does this do what you want?
>
> result_set = set([])
> seta = set(['a','b','c','d','e'])
> setb = set(['a','c','f','g','h'])
> for i in seta:
>   temp1 = setb.difference(set([i]))
>   for j in temp1:
>     result_set.add(tuple(set([i,j])))
> for i in result_set:
>   print i
>
> I figure there should be 4+5+3+5+5 results.
> No ('a'), no ('c'). Has ('a','c') but not ('c','a').
>
> ##  ('c', 'g')
> ##  ('a', 'd')
> ##  ('h', 'e')
> ##  ('a', 'b')
> ##  ('c', 'f')
> ##  ('e', 'g')
> ##  ('c', 'b')
> ##  ('d', 'f')
> ##  ('a', 'g')
> ##  ('a', 'h')
> ##  ('c', 'e')
> ##  ('e', 'f')
> ##  ('d', 'g')
> ##  ('h', 'b')
> ##  ('a', 'f')
> ##  ('b', 'f')
> ##  ('c', 'd')
> ##  ('h', 'c')
> ##  ('a', 'c')
> ##  ('b', 'g')
> ##  ('a', 'e')
> ##  ('h', 'd')
>
>
>
> > Second, I'd hope to be able to say that objX should be assumed to have
> > made the choice z. In the first example I mentioned, if I said that
> > 'obj1 == a', the only result sets that would come out would be (a, d)
> > and (a, e).
>
> Like this?
>
> result_set = set([])
> seta = set(['a','b','c','d','e'])
> setb = set(['a','c','f','g','h'])
> target = 'a'
> for i in seta:
>   temp1 = setb.difference(set([i]))
>   for j in temp1:
>     temp2 = set([i,j])
>     if target in temp2:
>       result_set.add(tuple(temp2))
> for i in result_set:
>   print i
>
> ##  ('a', 'f')
> ##  ('a', 'g')
> ##  ('a', 'd')
> ##  ('a', 'e')
> ##  ('a', 'h')
> ##  ('a', 'b')
> ##  ('a', 'c')
>
>
>
> > I've been toying with this problem for a while, but I've found out it
> > quickly gets slow, so I hope some people here could find a way to
> > write code like this that is efficient (and hopefully not rely on
> > recursion and 'fix up' loops like I've got mockups with right now).
>
> > Thank you for any suggestions you can offer.

Almost, except for the one big issue that is missing: scalability. I
don't have a seta and setb, but rather set1..setN, with N varying
while the script is running. That's pretty much where the pain comes
in. I have some very (butt-ugly) code that works right now, but it's
more a hack than pretty (or efficient) code.

Thank you for your effort though, since your usage of set.difference()
gave me an idea on another issue I was wrestling with.



From tommy.nordgren at comhem.se  Mon Oct 29 17:18:20 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Mon, 29 Oct 2007 22:18:20 +0100
Subject: setting variables in outer functions
In-Reply-To: <fg5hj9$800$1@solaris.cc.vt.edu>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<fg5hj9$800$1@solaris.cc.vt.edu>
Message-ID: <F6B1D446-FCF2-41D9-9FB1-09FC7CE98F19@comhem.se>


On 29 okt 2007, at 21.59, brad wrote:

> Tommy Nordgren wrote:
>> Given the following:
>> def outer(arg)
>>      avar = ''
>>      def inner1(arg2)
>>           # How can I set 'avar' here ?
>
> Try this... works for me... maybe not for you?
>
> def outer(avar=False):
>      print avar
>      if avar == True:
>          return
>
>      def inner(avar=True):
>          print avar
>          return avar
>
>      outer(inner())
>
> outer()
> --  
> http://mail.python.org/mailman/listinfo/python-list
	This is not a general solution to this problem.
What works, though, (I just thought of it) is to do the following:
def outer(arg):
     adict = {}
     def inner1(arg):
          adict['avar'] = 'something'
     #now the value set by inner1 is available to other nested functions
------
What is a woman that you forsake her, and the hearth fire and the  
home acre,
to go with the old grey Widow Maker.  --Kipling, harp song of the  
Dane women
Tommy Nordgren
tommy.nordgren at comhem.se





From paul.hankin at gmail.com  Wed Oct 17 19:53:22 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 23:53:22 -0000
Subject: Pull Last 3 Months
In-Reply-To: <mailman.144.1192661793.13605.python-list@python.org>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
Message-ID: <1192665202.277171.132880@t8g2000prg.googlegroups.com>

On Oct 17, 11:56 pm, Shane Geiger <sgei... at ncee.net> wrote:
> A simpler way, imho:
>
> import datetime
> m = {
> 1:'Jan',2:'Feb',3:'Mar',4:'Apr',5:'May',6:'Jun',7:'Jul',8:'Aug',9:'Sep',10:'Oct',11:'Nov',12:'Dec'}
>
> month = datetime.date.today().month
> if month == 1:
>     ans = [m[11], m[12], m[1]]
> elif month == 2:
>     ans = [m[11], m[12], m[1]]
> else:
>     ans = [m[month-2], m[month-1], m[month]]
> print ans

It looks like you copied the month 2 case from the month 1 case
because you forgot to edit it afterwards. Anyway, a bit of modulo-12
arithmetic avoids special cases, and allows the number of months to be
generalised:

import datetime

months = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split()

def last_months(n):
    month = datetime.date.today().month
    return [months[(month - i - 1) % 12] for i in range(n)]

print last_months(3)

--
Paul Hankin



From projecktzero at yahoo.com  Thu Oct 25 11:51:02 2007
From: projecktzero at yahoo.com (projecktzero)
Date: Thu, 25 Oct 2007 08:51:02 -0700
Subject: New to Vim and Vim-Python
In-Reply-To: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
References: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
Message-ID: <1193327462.894091.225670@y42g2000hsy.googlegroups.com>

On Oct 24, 12:25 pm, Daniel Folkes <danfol... at gmail.com> wrote:
> I am new to using Vim's scripts.
>
> I was wondering if anyone uses Vim-Python and how to use it?   This
> includes things like key bindings and such.
>
> Thanks in advance,
> Daniel Folkes
> danfol... at gmail.com

I'm not exactly sure what you are talking about. Do you mean writing
Vim scripts in Python? I googled, Vim-Python and found a presentation
about it.

http://www.tummy.com/Community/Presentations/vimpython-20070225/vim.html

Or do you mean writing Python with Vim?

There's this blog entry about it.

http://www.petersblog.org/node/461

I enjoy writing python with Vim. The omni-complete works pretty well.

The TagList plug-in is pretty helpful:

http://www.vim.org/scripts/script.php?script_id=273

Mini-buffer explorer is a good plug-in too:

http://www.vim.org/scripts/script.php?script_id=159

SnippetsEmu is useful when I remember to trigger it for function defs
and class defs.

http://www.vim.org/scripts/script.php?script_id=1318

I also mapped a key to run the existing buffer through Pyflakes.

map <silent> <F9> :new <Bar> r!c:/Python25/python c:/Python25/scripts/
pyflakes #<CR>

You could use your favorite syntax checker like Pychecker or Pylint
instead of Pyflakes.




From tdelaney at avaya.com  Mon Oct  8 19:00:03 2007
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Tue, 9 Oct 2007 07:00:03 +0800
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
Message-ID: <E4C7BCAB1872014F81CEAACD25699B8C0849E6@301081ANEX2.global.avaya.com>

aaron.watters at gmail.com wrote:

> ANNOUNCE:
>   NUCULAR fielded text searchable indexing

Does "NUCULAR" stand for anything? The (apparent) misspelling of
"nuclear" has already turned me off wanting to find out more about it.

Tim Delaney


From kyosohma at gmail.com  Tue Oct 30 16:44:32 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 30 Oct 2007 20:44:32 -0000
Subject: python in academics?
In-Reply-To: <47278c71$0$29610$426a74cc@news.free.fr>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
	<1193749612.124199.172020@o38g2000hse.googlegroups.com>
	<47278c71$0$29610$426a74cc@news.free.fr>
Message-ID: <1193777072.297513.48340@o80g2000hse.googlegroups.com>

On Oct 30, 2:55 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> kyoso... at gmail.com a ?crit :
>
> > On Oct 29, 10:39 pm, sandipm <sandip.m... at gmail.com> wrote:
>
> >>seeing posts from students on group. I am curious to know, Do they
> >>teach python in academic courses in universities?
>
> >>in undergrad comp science courses,  We had scheme language as scheme
> >>is neat and beautiful language to learn programming. We learnt other
> >>languages ourselve with basics set right by scheme..
>
> >>sandip
>
> > They didn't at either of the colleges I went to. They seemed to be
> > focused on C++, COBOL and Visual Basic. All are used all over the
> > place, but only Visual Basic is easy for complete newbs.
>
> And alas one of the worst languages for a beginner - because you'll
> probably need years to unlearn it.

which language? I listed 3...and since you don't actually "learn" a
language at all in a beginner's class, I don't really have anything to
unlearn. All you get in those STUPID classes is a taste of
programming...if you're lucky.


>
> > I hope more
> > colleges adopt Python or Ruby as a teaching language, but I don't
> > think it's a good idea to ignore COBOL or C++ since their used so
> > extensively in big business.
>
> being widely used doesn't imply being a good language for teaching CS
> (nor even being a good language for anything).

I wasn't implying that they were good or bad, but that if you go to
work for most big businesses, than it would probably be beneficial to
know the language(s). For example, most insurance, financial and
government jobs use COBOL to some degree or another.

Mike



From steven.bethard at gmail.com  Mon Oct 29 19:31:56 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 29 Oct 2007 17:31:56 -0600
Subject: setting variables in outer functions
In-Reply-To: <87myu1k4rm.fsf@mulj.homelinux.net>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
Message-ID: <YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>

Hrvoje Niksic wrote:
> Tommy Nordgren <tommy.nordgren at comhem.se> writes:
> 
>> Given the following:
>> def outer(arg)
>>      avar = ''
>>      def inner1(arg2)
>>           # How can I set 'avar' here ?
> 
> I don't think you can, until Python 3:
> http://www.python.org/dev/peps/pep-3104/

But it definitely does work in Python 3 if you use 'nonlocal'::

     Python 3.0a1+ (py3k:58681, Oct 26 2007, 19:44:30) [MSC v.1310 32 bit
     (Intel)] on win32
     Type "help", "copyright", "credits" or "license" for more
     information.
     >>> def f():
     ...     x = 1
     ...     def g():
     ...         nonlocal x
     ...         x = 2
     ...     print(x)
     ...     g()
     ...     print(x)
     ...
     >>> f()
     1
     2

That said, I'd like to see the reason you think you want to do this.

STeVe


From lew at lewscanon.com  Sun Oct 21 11:04:39 2007
From: lew at lewscanon.com (Lew)
Date: Sun, 21 Oct 2007 11:04:39 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192978570.098588.276310@v23g2000prn.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192978570.098588.276310@v23g2000prn.googlegroups.com>
Message-ID: <TaednSEGYpIa94banZ2dnUVZ_tDinZ2d@comcast.com>

OMouse wrote:
> For the love of the Perl, Python, Lisp, Java and functional
> programmers, please just give an abstract of what you've written and
> link to it?

I expect you'll be ignored on that.  Xah Lee reposts and reposts these essays 
from years agone.  I don't even read his posts, just the responses.

-- 
Lew


From deets at nospam.web.de  Sat Oct 20 12:52:29 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 20 Oct 2007 18:52:29 +0200
Subject: Noob: Loops and the 'else' construct
In-Reply-To: <1192837344.623098.186960@k35g2000prh.googlegroups.com>
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
	<mailman.196.1192763502.13605.python-list@python.org>
	<1192837344.623098.186960@k35g2000prh.googlegroups.com>
Message-ID: <5nuq2oFkaj33U1@mid.uni-berlin.de>

MRAB schrieb:
> On Oct 19, 4:11 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
> wrote:
>> En Thu, 18 Oct 2007 23:44:27 -0300, Ixiaus <parnel... at comcast.net>
>> escribi?:
>>
>>> I have just come across a site that discusses Python's 'for' and
>>> 'while' loops as having an (optional) 'else' structure.
>>> At first glance I interpreted it as being a bit like the 'default'
>>> structure in PHP's switch block... But the switch block isn't a loop,
>>> so, I am now confused as to the reason for using 'else' with the for
>>> and while loops...
>>> A few quick tests basically show that statements in the else structure
>>> are executed at the fulfillment of the loop's expression (ie, no
>>> break).
>> A `while` loop tests a condition: if it evaluates to true, keep cycling;
>> if it is false, stop. The `else` clause is executed when the condition is
>> false, as in any `if` statement. If you exit the loop by using `break`,
>> the `else` part is not executed (because you didn't get out of the loop by
>> determining the condition falseness)
>>
>> You can think of a `for` loop as meaning `while there are remaining
>> elements to be iterated, keep cycling` and the `else` clause applies when
>> there are no more elements. A `break` statement does not trigger the else
>> clause because the iteration was not exhausted.
>>
>> Once you get the idea, it's very simple.
>>
> It's useful when you want to search for an item and to do something if
> you don't find it, eg:
> 
> for i in items:
>     if is_wanted(i):
>         print "Found it"
>         break
> else:
>     print "Didn't find ir"

Wrong. It's not:

for i in []:
     print i
else:
     print "I'm reached, too"

prints out "I'm reached, too"

The else will ONLY not get executed when the loop is left prematurely 
through a break:

for i in [1]:
     print i
     break
else:
     print "I'm reached, too"

won't print the "I'm ..."


Diez


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 10:24:33 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 16:24:33 +0200
Subject: Newbie packages Q
In-Reply-To: <1191763497.852128.130710@k79g2000hse.googlegroups.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
Message-ID: <4708ebfc$0$21561$426a74cc@news.free.fr>

MarkyMarc a ?crit :
(snip)
> And the atest and btest, shouldn't they be able to import each
> other??

import is a statement. It's executed, like any other top-level code, 
when the module is imported (or the script loaded into the interpreter 
if it's called directly). So if A.py imports B.py and B.py imports A.py, 
you do have a circular reference that can't be solved.

Anyway, circular dependencies are Bad(tm), so you *don't* want such a 
situation.



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct  8 13:09:14 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 17:09:14 -0000
Subject: Variable scoping rules in Python?
References: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
Message-ID: <13gkp1qr0hp9i5e@corp.supernews.com>

On Mon, 08 Oct 2007 07:17:36 -0700, joshua.davies wrote:

> I went back and re-read chapter 13 of "Learning Python", which talks
> about variable scoping rules, and I can't figure out why Python is
> saying this variable in Unbound.  It works if I insert:
> 
>   global COLUMNS
> 
> before the "if" statement... but I don't understand why.  Is the
> interpreter scanning my entire function definition before executing it,
> recognizing that I *might* assign COLUMNS to a value, and deciding that
> it's a local on that basis?

Almost right, but not quite.

You are right that Python decides that COLUMNS is local, but you're wrong 
about when that decision gets made. Python does not re-scan your function 
every time you execute it, but only once, when it is compiled.

Compiling the function might take one pass of the source code, or two, or 
a thousand for all we know; that's an irrelevant detail of interest only 
to compiler designers and the chronically curious. What's important is 
that once the function is compiled, the decision is already made about 
whether COLUMNS is local or not, and the virtual machine that executes 
your function only needs to interpret the byte-code in a single pass.



-- 
Steven.


From kyosohma at gmail.com  Wed Oct 10 10:35:35 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 10 Oct 2007 14:35:35 -0000
Subject: Building Binary Packages
Message-ID: <1192026935.627151.160810@19g2000hsx.googlegroups.com>

I am trying to figure out how to build binaries for Python packages
and I've done it with MinGW. However, in my research, I've noticed
that some of the programmers out there think that you should use the
compiler that is used to compile the official Python distributions,
which appears to be Visual Studio 2003.

None of these programmers has really given their reasons for this
though. Does compiling with a different compiler introduce subtle
issues of some sort? If so, what are they (in general)? If you don't
use VS2003, what compiler do you use?

Here are the some links to what I've been reading:

http://boodebr.org/main/python/build-windows-extensions
http://www.z3lab.org/sections/blogs/philipp-weitershausen/2007_07_26_cheap-binary-windows
http://www.gooli.org/blog/building-m2crypto-on-windows/

Thank you for your time.

Mike



From phil at freehackers.org  Fri Oct 12 06:59:01 2007
From: phil at freehackers.org (BlueBird)
Date: Fri, 12 Oct 2007 03:59:01 -0700
Subject: EasyMock for python ?
In-Reply-To: <mailman.84.1192112806.927.python-list@python.org>
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
	<mailman.84.1192112806.927.python-list@python.org>
Message-ID: <1192186741.935636.35740@v23g2000prn.googlegroups.com>

On Oct 11, 4:26 pm, "Simon Brunning" <si... at brunningonline.net> wrote:
> On 10/10/07, BlueBird <p... at freehackers.org> wrote:
>
> > Does anybody know where to find a library like EasyMock for python ? I
> > searched quickly but could not find anything.
>
> > I found python-mocks on sourceforge but form quickly reading the docs,
> > it is not an EasyMock style mock. Actually, according to
> >http://martinfowler.com/articles/mocksArentStubs.htmlI don't think it
> > is even a mock library. More a stub.
>
> python-mock is more jMock than EasyMock in style, it's true, and the
> fact that you define expectations *after* the test invocation rather
> than before does feel a bit odd. But it does indeed check against the
> defined expectations, so that makes it a mock library in my book.
>
> A record-playback EasyMock style mock library would be nice, it's true...

It should not be that hard to do, given that python-mocks already has
the notion of recording and expectation verifiation.

I may give it a stab.

   Philippe




From rob.mcmullen at gmail.com  Sat Oct 27 12:26:24 2007
From: rob.mcmullen at gmail.com (Rob McMullen)
Date: Sat, 27 Oct 2007 16:26:24 -0000
Subject: multi-protocol url-based IO -- pure python kioslave-like module?
Message-ID: <1193502384.553887.30370@i38g2000prf.googlegroups.com>

Wheel reinvention preemption question: is there an existing pure-
python library with functionality similar to KDE's kio/kioslave
implementation?  A multi-protocol, extensible library based on URLs
that abstracts directory listing and file read/write?  I'm looking to
use it in client code, not server, so it doesn't have to be
asynchronous like kio; ideally it would be small and only depend on
the standard python library.

Here's what I'm aware of:

* urllib2 doesn't handle opening URLs for writing, meaning that it's
incapable of supporting WebDAV or e.g. the fish:// protocol

* twisted is built to handle multiple protocols, but is an extremely
large package aiming to simplify low-level server and client code

* Boa Contstructor has something called Explorers which support
multiple protocols, but seems pretty tied to its gui implementation

* PyKDE can interface with the KDE shared libraries, but obviously
that's not pure python. (Or standalone or small. :)

* the somewhat related PEP-268 for WebDAV support, but that was
withdrawn.

My google-fu doesn't show much else.  Any pointers would be
appreciated!

Thanks,

Rob



From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 14 18:22:31 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 14 Oct 2007 22:22:31 -0000
Subject: pydev code completion problem
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
	<1192394167.058669.117830@q5g2000prf.googlegroups.com>
	<feu3bo$8hs$2@nemesis.news.tpi.pl>
Message-ID: <13h55l7bk542o92@corp.supernews.com>

On Sun, 14 Oct 2007 21:57:12 +0000, Lukasz Mierzejewski wrote:

> On Sun, 14 Oct 2007 20:36:07 +0000, cyberco wrote:
> 
>> Confirmed (with exactly the same software).
>> 
>> Please discuss this issue at the PyDev discussion forum:
>> http://sourceforge.net/forum/forum.php?forum_id=293649
> 
> 
> Thank you for replay, but I'm still not sure what to think about it...
> Marc 'BlackJack' Rintsch in his replay to my post says that it would be
> to complicated for IDE to keep track of all objects... isn't he right?


*shakes head sadly*

Young programmers today, with your IDEs and code completion and syntax 
highlighting... when I was your age, we used "ed" and liked it!


http://www.gnu.org/fun/jokes/ed.msg.html



-- 
Steven


From cuongvt at fpt.vn  Tue Oct  2 20:16:09 2007
From: cuongvt at fpt.vn (cuongvt)
Date: Tue, 2 Oct 2007 17:16:09 -0700 (PDT)
Subject: Django for database driven web application is OK?
Message-ID: <13010756.post@talk.nabble.com>


Hello 
I'm new to both Django and Python. I'm mainly developing on PHP. 
I tend to move to Django. But I want to confirm as below: 
I heard that Django is mainly used for something like content management,
CMS or something 
like that and Rails is mainly for web applications. 
So my question: is it true or not? 
For rapid web application development, can I use Django to create intranet
database web driven 
application in my company for example: empoyees time management, goods
import/export management, 
salary management etc? 

Tnx in advance.
-- 
View this message in context: http://www.nabble.com/Django-for-database-driven-web-application-is-OK--tf4559120.html#a13010756
Sent from the Python - python-list mailing list archive at Nabble.com.



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct  5 03:31:15 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 05 Oct 2007 09:31:15 +0200
Subject: Is there a nicer way to do this?
In-Reply-To: <87ejgawpug.fsf@keizer.soze.com>
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <4705e82b$0$19642$426a74cc@news.free.fr>

Stefan Arentz a ?crit :
> Is there a better way to do the following?
> 
> attributes = ['foo', 'bar']
> 
> attributeNames = {}
> n = 1
> for attribute in attributes:
>    attributeNames["AttributeName.%d" % n] = attribute
>    n = n + 1
> 
> It works, but I am wondering if there is a more pythonic way to
> do this.

There is:

attributeNames = dict(
     ("AttributeName.%d" % n, attr) \
     for n, attr in enumerate(attributes)
   )



From gnewsg at gmail.com  Mon Oct 22 15:28:50 2007
From: gnewsg at gmail.com (Giampaolo Rodola')
Date: Mon, 22 Oct 2007 12:28:50 -0700
Subject: Adding idle timeout capabilities to asyncore
Message-ID: <1193081330.701282.149040@v29g2000prd.googlegroups.com>

Hi there.
We're talking about an asyncore-based server.
Just for the heck of it I'd like to set a timeout which will
disconnects the clients if they're inactive (i.e., no command or data
transfer in progress) for a long period of time.
I was thinking about putting the timeout value into an attribute:

def settimeout(self, secs):
     self.timeout = time.time() + secs

And then have the readable method call time.time() at every loop to
check if time has passed or not:

def readable(self):
    if time.time() >= self.timeout:
        self.send("Timeout")
        self.close()
    return 1

My only concern is if it's a good idea calling time.time() so often.
Since A LOT of clients could be connected simultaneously, couldn't it
be a too much resource-intensive operation?
I'd also be curious to know how Twisted implemented this kind of
stuff.
By calling time.time() at every loop?


Thanks in advance.



From exarkun at divmod.com  Mon Oct 15 15:12:59 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 15 Oct 2007 15:12:59 -0400
Subject: Automatically organize module imports
In-Reply-To: <ff0css$qjc$1@newsreader2.netcologne.de>
Message-ID: <20071015191259.8162.2131787714.divmod.quotient.23330@ohm>

On Mon, 15 Oct 2007 20:52:11 +0200, Thomas Wittek <mail at gedankenkonstrukt.de> wrote:
>Hi!
>
>Is there any possibility/tool to automatically organize the imports at
>the beginning of a module?
>
>I don't mean automatic imports like autoimp does as I like seeing where
>my objects/functions really come from.
>For the same reason I don't like "from foo import *".
>
>The downside is that you have a rather verbose import section at the
>beginning of your code.
>That's very bad if you reorganize your code and some imports are not
>needed anymore or new imports are needed.
>In Eclipse/Java there is a nice feature that automatically organizes
>your imports, meaning that it removes unneded imports and even adds
>missing imports automatically.
>
>Unfortunately, this PyDev doesn't have an equally powerful feature.
>As of the current version it only sorts the imports alphabetically, what
>isn't very useful.
>
>So, is there anything I can do about my imports?
>Is there a tool that can organize my import section?
>Shall I fall back to ambiguous imports like *?
>Shall I write out the module name for every class/function that I use
>(quite unhandy)?
>

Pyflakes will tell you which imports aren't being used (among other
things).  I don't know if an existing tool which will automatically
rewrite your source, though.

Jean-Paul


From besturk at gmail.com  Sun Oct 28 09:00:19 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 28 Oct 2007 06:00:19 -0700
Subject: Which index can i use ?
Message-ID: <1193576419.825167.144400@50g2000hsm.googlegroups.com>

Hi..
I want to do index in postgresql & python.
My table:
id(int) | id2(int) | w(int) | d(int)

My query:
select id, w where id=x and id2=y (sometimes and d=z)

I have too many insert and select operation on this table.
And which index type can i use ? Btree, Rtree, Gist or Hash ?
Also I want to unique (id, id2)..
Now this is my index. is it give me good performance ?
CREATE UNIQUE INDEX ind1 ON test USING btree (id, id2)
CREATE INDEX ind2 ON test USING btree (id)
CREATE INDEX ind3 ON test USING btree (id2)
CREATE INDEX ind4 ON test USING btree (w)
CREATE INDEX ind5 ON test USING btree (d)

I'm too sorry my bad english.
King regards..



From cjw at sympatico.ca  Sun Oct  7 09:36:43 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Sun, 07 Oct 2007 09:36:43 -0400
Subject: ANN: Pyrex 0.9.6
In-Reply-To: <mailman.1631.1191754836.2658.python-announce-list@python.org>
References: <mailman.1631.1191754836.2658.python-announce-list@python.org>
Message-ID: <feandf$h06$1@sea.gmane.org>

Greg Ewing wrote:
> Pyrex 0.9.6 is now available:
> 
>    http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/
> 
> There is a *lot* of new stuff in this version, too much
> to fit into this announcement. Read all about it here:
> 
>    http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/changes-0.9.6.html
> 
> What is Pyrex?
> --------------
> 
> Pyrex is a language for writing Python extension modules.
> It lets you freely mix operations on Python and C data, with
> all Python reference counting and error checking handled
> automatically.
Some of the doc\Manual files seem to be missing eg source_files.

I was browsing hoping to find an answer to the question "Do I
need a C compiler to use Pyrex, if so, which one?

Colin W.



From orsenthil at gmail.com  Mon Oct 22 05:36:27 2007
From: orsenthil at gmail.com (Phoe6)
Date: Mon, 22 Oct 2007 02:36:27 -0700
Subject: package import question
In-Reply-To: <ffhmnf$ke4$00$1@news.t-online.com>
References: <1193040634.402343.127660@y27g2000pre.googlegroups.com>
	<ffhmnf$ke4$00$1@news.t-online.com>
Message-ID: <1193045787.107713.75030@e9g2000prf.googlegroups.com>

On Oct 22, 1:24 pm, Peter Otten <__pete... at web.de> wrote:
> Phoe6 wrote:
> > Hi all,
> > I have the following directory structure:
>
> > wallpaper/
> >               -main.py
> >               -ng/
> >                  -- __init__.py
> >                  -- setdesktop.py
> >               -yb/
> >                  -- __init__.py
> >                  -- setdesktop.py
>
> >>From main.py, I would like to do:
> > import ng
> > import yb
> > ng.setdesktop.run()
> > yb.setdesktop.run()
>
> > But it is not working! when I import the package, the modules present
> > inside the package are getting imported.
>
> > However, following the python document if I do
> > import ng.setdesktop
> > import yb.setdesktop
>
> > ng.setdesktop.run()
> > yb.setdesktop.run()
> > Works fine.
>
> > I would like to use the notation.
> > import <my_package_name>
> > and use the modules inside the package in the dotted module notation.
> > What should I do the enable such a kind of imports.
>
> Put the line
>
> from . import setdesktop
>
> into both __init__.py files. Importing the package will then trigger the
> submodule to be imported.
>

Thanks a lot for your replies. I had a thought that I can do this way,
but as Python Documentation did not mention it, I was 'thinking' that
submodules will automatically get imported and __init__.py usually
blank.

Thanks again,
Senthil




From patrick.waldo at gmail.com  Sat Oct 27 08:19:18 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Sat, 27 Oct 2007 12:19:18 -0000
Subject: Regular Expression
In-Reply-To: <1193322969.306956.233960@d55g2000hsg.googlegroups.com>
References: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
	<5o4o43FktnthU7@mid.uni-berlin.de>
	<1193322969.306956.233960@d55g2000hsg.googlegroups.com>
Message-ID: <1193487558.210986.176090@o80g2000hse.googlegroups.com>

Finally I solved the problem, with some really minor things to tweak.
I guess it's true that I had two problems working with regular
expressions.

Thank you all for your help.  I really learned a lot on quite a
difficult problem.

Final Code:

#For text files in a directory...
#Analyzes a randomly organized UTF8 document with EINECS, CAS,
Chemical, and Chemical Formula
#into a document structured as EINECS|CAS|Chemical|Chemical Formula.

import os
import codecs
import re

path = "C:\\text_samples\\text\\"
path2 = "C:\\text_samples\\text\\output\\"
EINECS = re.compile(r'^\d\d\d-\d\d\d-\d$')
CAS = re.compile(r'^\d*-\d\d-\d$')
FORMULA = re.compile(r'([A-Z][A-Za-z0-9]+\.?[A-Za-z0-9]+/?[A-Za-
z0-9]+)')


def iter_elements(tokens):
    product = []
    for tok in tokens:
        if EINECS.match(tok) and len(product) >= 4:
            match = re.match(FORMULA,product[-1])
            if match:
                product[2:-1] = [' '.join(product[2:-1])]
                yield product
                product = []
            else:
                product[2:-1] = [' '.join(product[2:])]
                del product[-1]
                yield product
                product = []
        product.append(tok)
    yield product

for text in os.listdir(path):
    input_text = os.path.join(path,text)
    output_text = os.path.join(path2,text)
    input = codecs.open(input_text, 'r','utf8')
    output = codecs.open(output_text, 'w', 'utf8')
    tokens = input.read().split()
    for element in iter_elements(tokens):
        output.write('|'.join(element))
        output.write("\r\n")
input.close()
output.close()



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct 30 04:54:22 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 09:54:22 +0100
Subject: A class question
In-Reply-To: <87d4uxk08l.fsf@mulj.homelinux.net>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
	<47260805$0$5155$426a34cc@news.free.fr>
	<87d4uxk08l.fsf@mulj.homelinux.net>
Message-ID: <4726f139$0$11586$426a34cc@news.free.fr>

Hrvoje Niksic a ?crit :
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
> writes:
> 
>>> It seems to me that in recent times more Python beginners come from
>>> a Java background than from a C one.
>> Java does have "container" variables for primitive types, and even
>> for "references", Java's variables are more than names - they do
>> hold type informations too. Now I don't pretend to know how this is
>> really implemented, but AFAICT, and at least from a cognitive POV,
>> Java's variables model looks very close to the C/C++ model.
> 
> While Java's variable declarations bear a superficial (syntactical)
> similarity to C, their semantics is in fact equivalent to the
> object-reference semantics we know in Python.   They implicitly refer
> to objects allocated on the heap and, just like in Python, the same
> object can be referenced by multiple variables. 

You're talking about reference types here - not primitive types. And 
even then, from what I remember (not having done any Java these last 4 
years at least), Java's reference types are much closer to C++ 
references than to Python.

> If Java's model were
> close to C/C++, that would not be possible without explicit
> pointers/references

The reference is implicit for non-primitive types.

> since an object would be "contained" by the
> variable.
> 
> Variables holding primitive types don't really influence the
> variable/object relationship, since the values they hold are by nature
> immutable and without identity.

Python's immutable types instances does have an identity, and follow the 
same rules as mutable types instances - mutability set aside of course. 
Which is not the case with Java, where primitive types and reference 
types follow distinct rules. I'll check this out (not having done Java 
for a couple years) and come back, but I certainly remember Java's model 
as being way closer to C++ than to Python.


From joostkremers at yahoo.com  Mon Oct  8 07:32:13 2007
From: joostkremers at yahoo.com (Joost Kremers)
Date: 8 Oct 2007 11:32:13 GMT
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
Message-ID: <slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>

bbound at gmail.com wrote:
> Don't both "man" and those words for measurement come ultimately from
> words for "hand" (similarly to words like "manual", as in labor)?

no. "manual" is derived from latin "manus" meaning "hand". the word "man"
is related to (though not directly derived from) "mind", and the latin word
"mens", which means "mind".


-- 
Joost Kremers                                      joostkremers at yahoo.com
Selbst in die Unterwelt dringt durch Spalten Licht
EN:SiS(9)


From deets at nospam.web.de  Tue Oct  2 09:16:14 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 02 Oct 2007 15:16:14 +0200
Subject: Inheriting from int or long
References: <1191329955.229829.259130@22g2000hsm.googlegroups.com>
Message-ID: <5meukuFcvp4nU1@mid.uni-berlin.de>

 snorble at hotmail.com wrote:

> I started creating a simple "bits" class, intended to act like a array
> of bits. This was my initial idea, basically just overriding the
> string representation to display the bitmask (so far):
> 
> class bits(long):
>     def __str__ (self):
>         s = ''
>         if self == 0L:
>             s += '-'
>         else:
>             x = self
>             while x >= 1:
>                 if x & 1L: s = '#' + s
>                 else:      s = '-' + s
>                 x >>= 1
>         return s
> 
> My thought was this will act like a Long, and so should act like an
> array of bits with arbitrary precision, supporting the standard
> bitwise operations, along with others I may add.
> 
>>>> import bits
>>>> b = bits.bits(32)
>>>> b
> 32L
>>>> print b
> #-----
>>>> b = bits.bits(35)
>>>> print b
> #---##
>>>> b = bits.bits(36)
>>>> print b
> #--#--
>>>> b <<= 1
>>>> print b
> 72
> 
> So obviously when I attempt a bitwise operation (ex. b <<= 1), b is
> being assigned the result of b << 1, which is a Long.
> 
>>>> b = bits.bits(36)
>>>> type(b)
> <class 'bits.bits'>
>>>> type (b << 1)
> <type 'long'>
> 
> Is there any way around this without reimplementing all of the bitwise
> operators? It's not the biggest deal to reimplement the operators, but
> it kind of defeats the benefit of inheriting from an integer type.

No, there isn't. How is the existing operation of the operator going to know
that you want an instance of bits instead of long? It can't possibly know
that, even if it looked at the class of one or even both of it's operands:
it could be that instantiating a bits-object needed a reference to
TheCommonApplicationContextThingy or so....
 
> If there isn't a way around this, then I am curious in what situations
> it would be beneficial to inherit from an int or long. This issue
> seems more related to numeric types, since they are so centered around
> operations that involve assignment, as opposed to, say, a List, which
> has some operators (ex. +=), but does not depend on them (ex. use
> append() instead).

It's beneficial if you want special behavior - but I don't see how the
requirement of overloading the methods to make thinks work affect the grade
of "beneficiality".

Diez


From arkanes at gmail.com  Mon Oct 15 13:27:54 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 15 Oct 2007 12:27:54 -0500
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <13h6nlmd8aku2ea@corp.supernews.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
	<mailman.16.1192446949.13605.python-list@python.org>
	<13h6nlmd8aku2ea@corp.supernews.com>
Message-ID: <4866bea60710151027m517e8bablfb210eaf5cc88693@mail.gmail.com>

On 10/15/07, Steven D'Aprano <steve at remove-this-cybersource.com.au> wrote:
> On Mon, 15 Oct 2007 13:13:48 +0200, paul wrote:
>
> > Dmitri O.Kondratiev schrieb:
> >> Gary, thanks for lots of info!
> >> Python strings are not lists! I got it now. That's a pity, I need two
> >> different functions: one to reverse a list and one to reverse a string:
> > Not necessarily, you can handle both cases in one function:
> >
> > def reverse(xs):
> >    if xs in [[], '']:
> >      return xs
> >    return (reverse (xs[1:])) + [xs[0], [xs[0]]][isinstance(list, xs)]
> >
> > but this is evil(tm) and violates Rule #1, #2 of "import this" and
> > several others.
>
>
> I'm not sure if you consider the Zen of Python to be numbered from 1 or
> 0, so here are the first three:
>
>
> Beautiful is better than ugly.
> Explicit is better than implicit.
> Simple is better than complex.
>
> I'm not sure why you say that function violates two of those three. Well,
> okay, it's a bit ugly.
>
> I would say it violates this rule:
>
> There should be one-- and preferably only one --obvious way to do it.
>
> Have I missed something? Nobody seems to have pointed out the existence
> of reversed(), which works on both lists and strings.
>
>
> >>> ''.join(reversed("abc"))
> 'cba'
> >>> list(reversed(range(3)))
> [2, 1, 0]
>
> It doesn't take much to make a more user-friendly version:
>
>
> def myreversed(sequence):
>     if isinstance(sequence, basestring):
>         return type(sequence)().join(reversed(sequence))
>     else:
>         return type(sequence)(reversed(sequence))
>
> (in fact, that's so simple I wonder why the built-in reversed() doesn't
> do that).
>
>

Probably because reversed()'s primary use case is iteration, and it
doesn't make sense to do the magic to return full objects there.

The use case where you need to reverse a string or a list, with no
context about what it will be, and where you're not iterating over the
result (so a simple reversed() isn't practical) seems to be pretty
obscure to me, so that there's not an obvious answer isn't surprising.
There is the slightly non-obvious answer of sequence[::-1], though,
which I think is perfectly satisfactory.


From ldo at geek-central.gen.new_zealand  Thu Oct  4 23:06:10 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 16:06:10 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
	<slrnfg9ru0.1lk.horpner@FIAD06.norwich.edu>
Message-ID: <fe49n2$asr$1@lust.ihug.co.nz>

In message <slrnfg9ru0.1lk.horpner at FIAD06.norwich.edu>, Neil Cerutti wrote:

> On 2007-10-03, Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand>
> wrote:
>> In message <874ph8sdhx.fsf at benfinney.id.au>, Ben Finney wrote:
>>
>>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:
>>> 
>>>> On my Gentoo system:
>>>> 
>>>>     >>> import os
>>>>     >>> os.path
>>>>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
>>>> 
>>>> It's just a variable that happens to point to the posixpath module.
>>> 
>>> There's no "pointing" going on. It's another name bound to the
>>> same object, of equal status to the 'posixpath' name.
>>> 
>>> Python doesn't have pointers, and even "variable" is a
>>> misleading term in Python. Best to stick to "name" and "bound
>>> to".
>>
>> In Python, all names _are_ variables. They are not "bound" to
>> objects. The value of os.path is a pointer. It's implemented as
>> a pointer, it has all the semantics of a pointer.
> 
> No. A pointer is also an iterator.
> 
> void duplicate(char *d, const char *s)
> {
>   while (*d++ = *s++)
>     ;
> }

So if you can't do pointer arithmetic, then it's not a pointer? Trying this:

    void duplicate(void *d, const void *s)
    {
      while (*d++ = *s++)
        ;
    }

I get:

    test.c: In function 'duplicate':
    test.c:3: warning: dereferencing 'void *' pointer
    test.c:3: warning: dereferencing 'void *' pointer
    test.c:3: error: invalid use of void expression

So you can't do arithmetic or iterate with a void * pointer. Does that mean
it's not really a pointer?


From Glich.Glich at googlemail.com  Sun Oct 28 20:05:55 2007
From: Glich.Glich at googlemail.com (Glich)
Date: Sun, 28 Oct 2007 17:05:55 -0700
Subject: Getting callfunc from ast code.
In-Reply-To: <1193597572.850216.42300@19g2000hsx.googlegroups.com>
References: <1193594968.334939.289710@57g2000hsv.googlegroups.com>
	<1193597572.850216.42300@19g2000hsx.googlegroups.com>
Message-ID: <1193616355.997307.278980@v3g2000hsg.googlegroups.com>

Your help is very useful. I would not be able to progress without you!
Thanks.



From bj_666 at gmx.net  Wed Oct 10 07:42:15 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 10 Oct 2007 11:42:15 GMT
Subject: function wrappers
References: <mailman.20.1192013978.927.python-list@python.org>
Message-ID: <5n3s4mFfu79fU3@mid.uni-berlin.de>

On Wed, 10 Oct 2007 12:39:24 +0200, Ramon Crehuet wrote:

> def require_int(func):
>        def wrapper(arg):
>            assert isinstance(arg, int)
>            return func(arg)
>        return wrapper
> p1(a):
>    print a
> 
> p2=require_int(p1)
> 
> My question is: why do p2 arguments become wrapper arguments? What is 
> the flux of the arguments in the program when you pass functions as 
> arguments?

The function `p1` is passed into `require_int`.  It is bound to the local
name `func` in `require_int`.  Everytime `require_int` is called a new
function object is created and bound to the local name `wrapper`.  The
name `func` in that new function object refers to the object bound to
`func` in the `require_int` namespace.  Then the new function is returned
still carrying a reference to the `func` object that was passed into
`require_int`.

Ciao,
	Marc 'Blackjack' Rintsch


From zyzhu2000 at gmail.com  Tue Oct 23 13:02:48 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Tue, 23 Oct 2007 17:02:48 -0000
Subject: Life-time of temporary variables in list comprehensions
Message-ID: <1193158968.578330.204710@t8g2000prg.googlegroups.com>

Hi All,

If I have a list comprehension:

ab=["A","B"]
c = "ABC"
[1.0 if c=='A' else c='B' for c in ab]
print c

>>"B"

My test shows that if c is not defined before the list comprehension,
it will be created in the list comprehension; if it is defined before
the list comprehension, the value will be overwritten. In other words,
temp variables are not local to list comprehensions.

My question is why is this and is there any way to make c local to
list comp?

Thanks,
Geoffrey



From rkmr.em at gmail.com  Tue Oct 23 01:27:06 2007
From: rkmr.em at gmail.com (rkmr.em at gmail.com)
Date: Mon, 22 Oct 2007 22:27:06 -0700
Subject: decorator for a function without argument
Message-ID: <e04d2e90710222227w7e33545i1f133d2e5245805@mail.gmail.com>

hi:
i have a decorator given below.
def checkdb(web):
        def decorator(func):
                def proxyfunc(self, args=(), kw=None):
                                #DO STUFF with web
                                return func(self, *args, **kw)
                return proxyfunc
        return decorator


but if i use it to decorate function without any arguments I get this error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: proxyfunc() takes at least 1 argument (0 given)

how to fix this?
thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/55f0a1db/attachment.html>

From lorna.burns at gmail.com  Mon Oct 22 08:37:27 2007
From: lorna.burns at gmail.com (Py-Fun)
Date: Mon, 22 Oct 2007 05:37:27 -0700
Subject: Iteration for Factorials
In-Reply-To: <5o3jalFl0n43U1@mid.uni-berlin.de>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
Message-ID: <1193056647.416562.36150@q3g2000prf.googlegroups.com>

On 22 Oct, 13:28, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Py-Fun wrote:
> > I'm stuck trying to write a function that generates a factorial of a
> > number using iteration and not recursion.  Any simple ideas would be
> > appreciated.
>
> Show us your attempts, and we might suggest a fix. Because otherwise this
> sounds suspiciously like homework.
>
> Diez

Here is my futile attempt.  Be careful with this though, I just ran
something similar and it was never ending...

def itforfact(n):
    while n<100:
        print n
        n+1
n = input("Please enter a number below 100")

itforfact(n)



From tjreedy at udel.edu  Mon Oct 29 17:49:59 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 29 Oct 2007 17:49:59 -0400
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
Message-ID: <fg5ki7$e07$1@ger.gmane.org>


"brad" <byte8bits at gmail.com> wrote in message 
news:fg5fku$5c1$1 at solaris.cc.vt.edu...
| Will len(a_string) become a_string.len()?

No.

 I was just reading
| http://docs.python.org/dev/3.0/whatsnew/3.0.html

which says nothing about such a change, except for one in the opposite 
direction: o.next() changes to next(o) which in turn calls o.__next__(), 
just as len(o) calls o.__len__()

| One of the criticisms of Python compared to other OO languages is that
| it isn't OO enough or as OO as others or that it is inconsistent.

Python is object-based and has a nice user-defined type (class) system, but 
I do not believe Guido has ever called it object oriented.  So the 
comparision is besides the point even if true.

| Is there a reason that len cannot be a method?

It corresponds to and calls method .__len__ , when such exists.  Yes, 
Python could have been designed differently, with no builtin functions, but 
is was not.  Python is also a functional language with first-class generic 
functions.

| why not a_string.len()?

You are free to bypass builtins and call methods directly if you like:
a_string.__len__().

But consider rewriting the following:

def table(func, seq):
    return zip(seq, map(func,seq))

table(len, ('', (), []))

If you *really* want to be super-OO, like functionless OO languages, you 
can also call methods instead of using operator symbols, which in effect 
are names of builtin functions.

Instead of a+b, write a.__add__(b).  And so on.

Terry Jan Reedy





From ldo at geek-central.gen.new_zealand  Thu Oct  4 07:39:25 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 00:39:25 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>	<fdtsfu$iq6$03$1@news.t-online.com>	<fdvn34$odf$1@orkan.itea.ntnu.no>
	<85ve9ov971.fsf@lola.goethe.zz>	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>	<47041303$0$13930$fa0fcedb@news.zen.co.uk>	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>
	<fe26tn$vs0$5@lust.ihug.co.nz>
	<mailman.1501.1191493515.2658.python-list@python.org>
Message-ID: <fe2jdd$84p$1@lust.ihug.co.nz>

In message <mailman.1501.1191493515.2658.python-list at python.org>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>
>> In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>, George Neuner
>> wrote:
>> 
>>> The Christian Bible says "In the beginning was the Word..."
>> 
>> Which is an English mistranslation from the Greek "logos".
> 
> So, now you're telling me that the Garden of Eden was actually a
> *marketing campaign*?

Different Bible book, different author, different original language.


From chowroc.z+l at gmail.com  Tue Oct 16 22:52:17 2007
From: chowroc.z+l at gmail.com (Roc Zhou)
Date: Wed, 17 Oct 2007 10:52:17 +0800
Subject: A near realtime file system mirror application written in Python
Message-ID: <7847e5160710161952t7a22881ei1ba0d70b69dec883@mail.gmail.com>

Hello:

Recently I started an open source project "cutils" on the
sourceforge:
https://sourceforge.net/projects/crablfs/

The document can be found at:
http://crablfs.sourceforge.net/#ru_data_man

This project's mirrord/fs_mirror is a near realtime file system
mirroring application across 2 or more hosts, now it can work
for me.

I hope this tool can be useful to you.

Thank you.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/d464e4de/attachment.html>

From goon12 at gmail.com  Fri Oct 19 23:46:14 2007
From: goon12 at gmail.com (Joe Riopel)
Date: Fri, 19 Oct 2007 23:46:14 -0400
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710191537r62ab6f28p3f61ca459fdc2116@mail.gmail.com>
References: <496954360710191537r62ab6f28p3f61ca459fdc2116@mail.gmail.com>
Message-ID: <6a2ccd190710192046l7fbf6748qb1f0cc71525af267@mail.gmail.com>

On 10/19/07, Robert Dailey <rcdailey at gmail.com> wrote:
> Is there a C++ version of the C Python API packaged with python 2.5?
> It would be nice to have a OOP approach to embedding python in C++. It
> would also be a bonus if this C++ Python API cleaned up a lot of the
> messy code involved in embedding python.

C++ is object orientated? I heard it was, but I don't buy it.


From ldo at geek-central.gen.new_zealand  Thu Oct  4 00:44:38 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 17:44:38 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
	<mailman.1487.1191456788.2658.python-list@python.org>
Message-ID: <fe1r3m$o5m$4@lust.ihug.co.nz>

In message <mailman.1487.1191456788.2658.python-list at python.org>, Carsten
Haese wrote:

> On Thu, 2007-10-04 at 11:11 +1300, Lawrence D'Oliveiro wrote:
>
>> In Python, all names _are_ variables. They are not "bound" to objects.
>> The value of os.path is a pointer.
> 
> No. "os.path" refers to the object that's known as the "path" attribute
> of the object known as "os". That object, in turn, is a module.

No, it's a variable. It just happens to contain a pointer to a module.

>>  It's implemented as a pointer,
> 
> While it is true that namespaces are implemented in CPython as
> collections of pointers to PyObject structures, that's an irrelevant
> implementation detail. I doubt that they are implemented as pointers in
> Jython, PyPy, or IronPython.

I'll bet they are.

>>  it has all the semantics of a pointer.
> 
> No, it doesn't. A pointer means the physical address of a memory
> location, which implies that you can overwrite that memory location. Can
> you do that in Python?

Yes. Look up the definition of "mutable objects".



From gnuist006 at gmail.com  Tue Oct  9 02:24:05 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 06:24:05 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <see-36543E.18592809102007@lust.ihug.co.nz>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<see-36543E.18592809102007@lust.ihug.co.nz>
Message-ID: <1191911045.604596.50110@19g2000hsx.googlegroups.com>

On Oct 8, 10:59 pm, Barb Knox <s... at sig.below> wrote:

>
> Lambda calculus.  Instead of function A returning to its caller, the
> caller provides an additional argument (the "continuation") which is a
> function B to be called by A with A's result(s).  In pure "continuation
> style" coding, nothing ever "returns" a result.
>
> It is easy to mechanically transform normal function-style lambda
> calculus into continuation-style, but the reverse is not so.
>

Explanation and reference please

>
> You can have a "spaghetti stack", or keep continuation data-structures
> in the heap.

A picture, diagram? a picture is worth a thousand words




From comp.lang.scheme at ancell-ent.com  Tue Oct  9 07:28:00 2007
From: comp.lang.scheme at ancell-ent.com (Harold Ancell)
Date: Tue, 09 Oct 2007 06:28:00 -0500
Subject: why did MIT drop scheme for python in intro to computing?
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
Message-ID: <2fomg3hkekk99kgcjag280hgb02np9hngt@4ax.com>

On Tue, 09 Oct 2007 03:28:53 -0000, gnuist006 at hotmail.com wrote:

>On Oct 8, 1:23 pm, b... at cs.berkeley.edu (Brian Harvey) wrote:

>> "Kjetil S. Matheussen" <k.s.matheus... at notam02.no> writes:

>> >I don't think your speculations makes very much sence.

>> Amen.

>> And, in any case, there's no need to speculate.
>> MIT has published, on their web site, pages and
>> pages of rationale for the new curriculum.

>> The most important point, imho, is that the
>> programming language was the /least/ important
>> aspect of the decision.  The most important
>> aspect was the move to an application-based
>> (rather than topic-based) organization of the
>> curriculum.  The details flow out of that big
>> shift of focus.

>[ much snipped. ]

>Does scheme have a gui library?

>I really dont follow the logic.

I really REALLY hope that not a single GUI is
constructed in 6.01-2; adding that to the load
would be stark raving mad (look and you'll agree).

As Brian points out, languages are a means to the
end of teaching stuff, and I wouldn't be surprised
if not a single GUI is constructed in the entire
required/restricted elective curriculum.  That's
just not to the point of an EECS education that
has to be squeezed into 4/5 years (most students
take the combined MEng path, where the MS degree
is terminal and leads straight to industry).

If any library was a consideration in choosing
Python, it was the robots one for 6.01.  Note also
that Hal helped design and teach 6.01, and fully
supports the new curriculum.

As a total LISP/Scheme fanatic who finds parts of
Python's syntax to be too hard for his brain (not
the indentation, that's weird but useful and cool,
much like S-expressions in LISP), I looked hard at
the beginning of 6.01 where they're only teaching
SICP.

For that purpose, Python is not "awful" (remember,
I believe LISP is the One True Way of Computing).
For that initial bit of SICP material, I do not
believe the students will be handicapped.

Beyond that initial bit of material, I have no
informed opinions.

				- Harold



From aahz at pythoncraft.com  Fri Oct 26 20:09:03 2007
From: aahz at pythoncraft.com (Aahz)
Date: 26 Oct 2007 17:09:03 -0700
Subject: Good Book
References: <mailman.51.1192522719.13605.python-list@python.org>
	<1192556250.936548.255060@i13g2000prf.googlegroups.com>
Message-ID: <fftviv$bf0$1@panix3.panix.com>

In article <1192556250.936548.255060 at i13g2000prf.googlegroups.com>,
 <kyosohma at gmail.com> wrote:
>
>The Python Cookbook would probably be another good resource. While I
>don't like the Dummies series' name, the Python Dummies book is a good
>introduction, although it doesn't have enough examples, in my opinion.

Could you explain what examples you would have liked more of in _Python
for Dummies_?
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

The best way to get information on Usenet is not to ask a question, but
to post the wrong information.


From __peter__ at web.de  Tue Oct 16 04:14:44 2007
From: __peter__ at web.de (Peter Otten)
Date: Tue, 16 Oct 2007 10:14:44 +0200
Subject: Simple Text Processing Help
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
	<fevlma$imh$01$2@news.t-online.com>
	<1192482484.987399.112620@k35g2000prh.googlegroups.com>
Message-ID: <ff1rtk$j6m$03$1@news.t-online.com>

patrick.waldo wrote:

> manipulation?  Also, I conceptually get it, but would you mind walking
> me through

>> for key, group in groupby(instream, unicode.isspace):
>>         if not key:
>>             yield "".join(group)

itertools.groupby() splits a sequence into groups with the same key; e. g.
to group names by their first letter you'd do the following:

>>> def first_letter(s): return s[:1]
... 
>>> for key, group in groupby(["Anne", "Andrew", "Bill", "Brett", "Alex"], first_letter):
...     print "--- %s ---" % key
...     for item in group:
...             print item
... 
--- A ---
Anne
Andrew
--- B ---
Bill
Brett
--- A ---
Alex

Note that there are two groups with the same initial; groupby() considers
only consecutive items in the sequence for the same group.

In your case the sequence are the lines in the file, converted to unicode
strings -- the key is a boolean indicating whether the line consists
entirely of whitespace or not,

>>> u"\n".isspace()
True
>>> u"alpha\n".isspace()
False

but I call it slightly differently, as an unbound method:

>>> unicode.isspace(u"alpha\n")
False

This is only possible because all items in the sequence are known to be
unicode instances. So far we have, using a list instead of a file:

>>> instream = [u"alpha\n", u"beta\n", u"\n", u"gamma\n", u"\n",  u"\n", u"delta\n"]
>>> for key, group in groupby(instream, unicode.isspace):
...     print "--- %s ---" % key
...     for item in group:
...             print repr(item)
... 
--- False ---
u'alpha\n'
u'beta\n'
--- True ---
u'\n'
--- False ---
u'gamma\n'
--- True ---
u'\n'
u'\n'
--- False ---
u'delta\n'

As you see, groups with real data alternate with groups that contain only
blank lines, and the key for the latter is True, so we can skip them with

if not key: # it's not a separator group
   yield group 

As the final refinement we join all lines of the group into a single
string

>>> "".join(group)
u'alpha\nbeta\n'

and that's it.

Peter


From anandology at gmail.com  Wed Oct 31 21:25:22 2007
From: anandology at gmail.com (Anand)
Date: Thu, 01 Nov 2007 01:25:22 -0000
Subject: Method needed for skipping lines
In-Reply-To: <1193875491.983722.239270@y42g2000hsy.googlegroups.com>
References: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
	<1193875491.983722.239270@y42g2000hsy.googlegroups.com>
Message-ID: <1193880322.994494.322970@i38g2000prf.googlegroups.com>

On Nov 1, 5:04 am, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 31, 5:02 pm, Gustaf <gust... at algonet.se> wrote:
>
> > Hi all,
>
> > Just for fun, I'm working on a script to count the number of lines in source files. Some lines are auto-generated (by the IDE) and shouldn't be counted. The auto-generated part of files start with "Begin VB.Form" and end with "End" (first thing on the line). The "End" keyword may appear inside the auto-generated part, but not at the beginning of the line.

I think we can take help of regular expressions.

import re

rx = re.compile('^Begin VB.Form.*^End\n', re.DOTALL|re.MULTILINE)

def count(filename)
    text = open(filename).read()
    return rx.sub('', text).count('\n')



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct  4 04:26:31 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 10:26:31 +0200
Subject: migrating to packages
In-Reply-To: <87hcl7jsn0.fsf@mulj.homelinux.net>
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
	<87hcl7jsn0.fsf@mulj.homelinux.net>
Message-ID: <4704a3a5$0$5110$426a34cc@news.free.fr>

Hrvoje Niksic a ?crit :
> gherzig at fmed.uba.ar writes:
> 
>> I will expose my case quicly.
>> The MYCLASES.py file contains the A class, so i can use
>> from MYCLASES import A
>> a = ()
>>
>> Using the "package mode" (wich looks fine BTW), having the simple
>> MYCLASES/
>>      __init__.py
>>      A.py
>>
>> forces my (i guess) to use the
>> from MYCLASES.A import A
> 
> Exactly.  Using mypackage.mymodule instead of just mymodule is the
> entire *point* of a package.

Nope. The "entire point" of packages is to let you organize your code 
and namespace. And it's quite common to use the __init__.py of the 
package (as explained by Ben) as a facade to the internal organization 
of the package, so you can change this internal organization without 
breaking client code.

>  That way, if someone creates another
> module with using the same name (mymodule), it won't conflict with
> yours.  If you don't want to change mymodule to mypackage.mymodule,
> why use a package in the first place?

Because you have too much code to keep it in a single file.


From jwkenne at attglobal.net  Thu Oct 11 17:40:48 2007
From: jwkenne at attglobal.net (John W. Kennedy)
Date: Thu, 11 Oct 2007 17:40:48 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <1191978311.987341.271000@r29g2000hsg.googlegroups.com>
References: <87tzt3ihev.fsf@kobe.laptop><m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
	<1191978311.987341.271000@r29g2000hsg.googlegroups.com>
Message-ID: <CLwPi.2348$Yb2.747@newsfe12.lga>

nebulous99 at gmail.com wrote:
> Do not bluntly contradict me in public.

You are in grave need of professional psychiatric help.

Seek it now, if you do not wish your life to be ended three or four 
years down the line by a police sniper.

-- 
John W. Kennedy
Read the remains of Shakespeare's lost play, now annotated!
http://pws.prserv.net/jwkennedy/Double%20Falshood/index.html


From daniel_nolan at msn.com  Mon Oct 29 21:40:04 2007
From: daniel_nolan at msn.com (daniel)
Date: Mon, 29 Oct 2007 18:40:04 -0700
Subject: trouble with PAMIE
Message-ID: <1193708404.650144.316150@50g2000hsm.googlegroups.com>

I'm using PAMIE to automate some web browsing. My problem is with the
buttonClick() method. It seems to work unless the button is supposed
to open a new window, in which case nothing happens. There is no error
message. Any ideas?

Daniel



From bj_666 at gmx.net  Sat Oct 13 04:38:19 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 13 Oct 2007 08:38:19 GMT
Subject: raw_input() and utf-8 formatted chars
References: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
	<1192216685.923198.279040@v29g2000prd.googlegroups.com>
	<1192220315.602812.155810@z24g2000prh.googlegroups.com>
	<5na4jvFh28v6U2@mid.uni-berlin.de>
	<1192241386.568665.140500@y27g2000pre.googlegroups.com>
Message-ID: <5nbefrFh5md2U1@mid.uni-berlin.de>

On Fri, 12 Oct 2007 19:09:46 -0700, 7stud wrote:

> On Oct 12, 2:43 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>> You mean literally!?  Then of course I get A\xcc\x88 because that's what I
>> entered.  In string literals in source code the backslash has a special
>> meaning but `raw_input()` does not "interpret" the input in any way.
>>
> 
> Then why don't I end up with the same situation as this:
> 
>> >> > s = 'A\xcc\x88'   #capital A with umlaut
>> >> > print s           #displays capital A with umlaut

I don't get the question!?  In string literals in source code the
backslash has a special meaning, like I wrote above.  When Python compiles
that above snippet you end up with a string of three bytes, one with the
ASCII value of an 'A' and two bytes where you typed in the byte value in
hexadecimal:

In [191]: s = 'A\xcc\x88'

In [192]: len(s)
Out[192]: 3

In [193]: map(ord, s)
Out[193]: [65, 204, 136]

In [194]: print s
?

The last works this way only if the receiving/displaying program expected
UTF-8 as encoding.  Otherwise something other than an ? would have been
shown.

If you type in that text when asked by `raw_input()` then you get exactly
what you typed because there is no Python source code compiled:

In [195]: s = raw_input()
A\xcc\x88

In [196]: len(s)
Out[196]: 9

In [197]: map(ord, s)
Out[197]: [65, 92, 120, 99, 99, 92, 120, 56, 56]

In [198]: print s
A\xcc\x88

>> > And what is it that your keyboard enters to produce an 'a' with an
>> > umlaut?
>>
>> *I* just hit the  key.  The one right next to the ? key.  ;-)
>>
> ...and what if you don't have an a-with-umlaut key?

I find other means to enter it.  <Alt> + some magic number on the numeric
keypad in windows, or <Compose>, <a>, <"> on Unix/Linux.  Some text editors
offer special sequences too.  If all fails there are character map
programs that show all unicode characters to choose from and copy'n'paste
them.

Ciao,
	Marc 'BlackJack' Rintsch


From stargaming at gmail.com  Fri Oct 12 09:59:39 2007
From: stargaming at gmail.com (Stargaming)
Date: 12 Oct 2007 13:59:39 GMT
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<470e5606$0$29825$426a34cc@news.free.fr>
Message-ID: <470f7dca$0$8814$9b622d9e@news.freenet.de>

On Thu, 11 Oct 2007 18:58:44 +0200, Bruno Desthuilliers wrote:
[snip]

Your implementation seems particularly broken. You do not return anything 
from `name()`, hereby removing name as an attribute (or: replacing it 
with its return value -- None). You should return ``property(**locals())
`` (or ``property(fget=fget, fset=fset, ...)``, whatever you like).

I'm going to point out a few other mistakes first:

> class Toto(object):
>    def __iinit__(self, name):

Typo here: __init__

>      self.name = name
>    @apply
>    def name():
>      def fget(self):
>        print "getting %s.name" % self
>        return self._name
>      def fset(self, val):
>        print "setting %s.name to %s" % (self, val) 
>        self._name = name

It should be `val`, not `name`, huh? And, as mentioned above, the return 
value is missing.

>    def say_hello(self):
>      print "Hello, my name is %s" % self.name

A fixed implementation could be something along these lines::

    >>> class Toto(object):
    ...    def __init__(self, name):
    ...      self.name = name
    ...    @apply
    ...    def name():
    ...      def fget(self):
    ...        print "getting %s.name" % self
    ...        return self._name
    ...      def fset(self, val):
    ...        print "setting %s.name to %s" % (self, val)
    ...        self._name = val
    ...      return property(**locals())
    ...    def say_hello(self):
    ...      print "Hello, my name is %s" % self.name
    ...
    >>> t = Toto("bruno")
    setting <__main__.Toto object at 0xb792f66c>.name to bruno
    >>> t.say_hello()
    getting <__main__.Toto object at 0xb792f66c>.name
    Hello, my name is bruno
    >>> t.name
    getting <__main__.Toto object at 0xb792f66c>.name
    'bruno'
    >>> t.name = "jon"
    setting <__main__.Toto object at 0xb792f66c>.name to jon
    >>> t.say_hello()
    getting <__main__.Toto object at 0xb792f66c>.name
    Hello, my name is jon

Cheers,
Stargaming


From sjmachin at lexicon.net  Sun Oct 14 19:01:00 2007
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 14 Oct 2007 16:01:00 -0700
Subject: Order of tuples in dict.items()
In-Reply-To: <13h55uj8pogd4ea@corp.supernews.com>
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
	<13h55uj8pogd4ea@corp.supernews.com>
Message-ID: <1192402860.365074.241070@i38g2000prf.googlegroups.com>

On Oct 15, 8:27 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> I've never seen the point of a sorted dictionary, it's easy to just say:
>
> for key, value in sorted(D.items())

There are several applications that involve finding i such that key[i]
<= query < key[i+1] where the keys are sorted and unique ... perhaps
with a huge sentinel key at the end. Examples include sliding-scale
taxes, and looking up prices for shares or managed funds. The code to
do this in Python using the bisect module is about as clear as the
equivalent SQL :-)



From Jiandong.Ge at gmail.com  Wed Oct  3 12:46:20 2007
From: Jiandong.Ge at gmail.com (JD)
Date: Wed, 03 Oct 2007 16:46:20 -0000
Subject: A question about subprocess
Message-ID: <1191429980.784610.39020@22g2000hsm.googlegroups.com>

Hi,

I want send my jobs over a whole bunch of machines (using ssh). The
jobs will need to be run in the following pattern:

(Machine A)   (Machine B)  (Machine C)

Job A1             Job B1            Job C1

 Job A2           Job B2            etc

 Job A3          etc

 etc

Jobs runing on machine A, B, C should be in parallel, however, for
each machine, jobs should run one after another.

How can I do it with the subprocess?


Thanks,

JD



From steven.bethard at gmail.com  Tue Oct 23 13:30:20 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 23 Oct 2007 11:30:20 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <5o5mimFld8c9U1@mid.uni-berlin.de>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>	<mailman.335.1193073967.13605.python-list@python.org>	<1193076352.576143.123260@z24g2000prh.googlegroups.com>	<mailman.337.1193077412.13605.python-list@python.org>	<1193078577.129883.317680@k35g2000prh.googlegroups.com>	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>	<471d06e2$0$12275$426a74cc@news.free.fr>	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<5o5mimFld8c9U1@mid.uni-berlin.de>
Message-ID: <cf-dnUERQZcxsoPanZ2dnUVZ_qKgnZ2d@comcast.com>

Marc 'BlackJack' Rintsch wrote:
> On Mon, 22 Oct 2007 17:31:51 -0600, Steven Bethard wrote:
> 
>> Bruno Desthuilliers wrote:
>>> Computed attributes are IMHO not only a life-saver when it comes to 
>>> refactoring. There are cases where you *really* have - by 'design' I'd 
>>> say - the semantic of a property, but know from the start you'll need 
>>> computation (for whatever reason). Then what would be the rationale for 
>>> using explicit getters/setters ?
>> I'd be interested to hear what these use cases are.
> 
> Stupid little example: A circle object with `radius` and `diameter`
> attributes.  It doesn't make sense to store both a as normal attributes
> because they will eventually get out of sync.  One can be implemented as a
> property.

Could be.  But I'd tend to define a get_diameter() method here.  As a 
user of your class, I'd like to know which one is doing the computation. 
  What if I'm using ridiculously large ints, and I care about the 
multiplication?

> Another one is delegation of attribute access.  I'm thinking of a wrapper
> class around an object with an attribute, say `is_active`, and a wrapper
> that has a property with the same name that returns the value of the
> wrapped objects attribute.

This is retrofitting to an API, so it already falls under the only time 
I think you *should* be using property().  Although in this case, it 
might be that __getattr__ is more appropriate.

> Or lazy computation of an attribute.  Breaks expectations for the first
> access -- long calculation for simple attribute access -- but meets it for
> every subsequent access.

There are descriptors better than property() at achieving this behavior. 
  See for example:

     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/363602

My personal experience is that every time I write stuff this way (and I 
have many times), I end up re-writing it later as a method because it's 
less confusing for a method to take a long time than it is for an 
attribute access.

STeVe


From michele.simionato at gmail.com  Sun Oct  7 08:49:13 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sun, 07 Oct 2007 12:49:13 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <4708d28f$0$21569$426a34cc@news.free.fr>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<1i5kbfo.xq3fut1f7ouujN%raims@dot.com>
	<kh7kt4-v7q.ln1@strongwill.g2ctech>
	<1i5kk06.enf7ws1juj4zkN%raims@dot.com>
	<mailman.1636.1191758480.2658.python-list@python.org>
	<4708d28f$0$21569$426a34cc@news.free.fr>
Message-ID: <1191761353.306980.121410@22g2000hsm.googlegroups.com>

On Oct 7, 8:36 am, Bruno Desthuilliers
> Indeed. But AFAICT, Lawrence and Michele problems is not to port an
> existing web application, but to choose a web framework that will play
> well with their existing *system* (RDBMS, existing apps and libs etc).
> Which is quite another problem, and may eliminate some otherwise pretty
> good frameworks for compatibility reasons (DBMS support and other issues).
>
> (please Michele or Lawrence correct me if I'm wrong...)

Yes, our main concern is compatibility with the existing
system: for instance, one constraint is the MS SQL database.
Having said that, we would like to port parts of a Zope application to
the new framework, but I do not expect this to be
particularly difficult for the parts we want to migrate since
they are not really using Zope features. Other parts instead
would require a very substantial rewrite so for the moment I think
they will stay in Zope.

   Michele Simionato



From robert.kern at gmail.com  Sun Oct 21 23:11:05 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 21 Oct 2007 22:11:05 -0500
Subject: parallel NumPy: PyMPI, myMPI or something else?
In-Reply-To: <1193001446.939761.122290@t8g2000prg.googlegroups.com>
References: <1193001446.939761.122290@t8g2000prg.googlegroups.com>
Message-ID: <ffh4cg$932$1@ger.gmane.org>

smithken04 at yahoo.com wrote:
> Hi!
> 
> I am trying to find my way to a running parallel NumPy installation.
> Can you help me getting started wihtout losing my way several times?
> 
> PyMPI and myMPI are apperently not too actively developed. Is this
> true? Are they mature enough so that they don't need any more updates?
> Have they been replaced by more recent modules?

The people who I know who use MPI and Python have been using mpi4py. I haven't
used it myself, though.

  http://mpi4py.scipy.org/

> Then, if I have NumPy running with PyMPI or whatever, is NumPy already
> optimized for a MPI environment so that for example matrix
> multiplication, iterative solvers etc. are automatically distributed?

No.

> Or do I have to split each problem myself to make use of the
> parallelism?

Pretty much.

-- 
Robert Kern

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



From gneuner2/ at comcast.net  Wed Oct  3 23:30:08 2007
From: gneuner2/ at comcast.net (George Neuner)
Date: Wed, 03 Oct 2007 23:30:08 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<85ve9ov971.fsf@lola.goethe.zz> <fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<fe0mhm$c08$1@orkan.itea.ntnu.no>
Message-ID: <8gn8g35m3rtb4n4l2ouk55vv54bsfbga4r@4ax.com>

On Wed, 3 Oct 2007 18:20:38 +0000 (UTC), bcd at pvv.ntnu.no (Bent C
Dalager) wrote:

>In article <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0 at 4ax.com>,
>George Neuner  <gneuner2/@comcast.net> wrote:
>>On Wed, 3 Oct 2007 09:36:40 +0000 (UTC), bcd at pvv.ntnu.no (Bent C
>>Dalager) wrote:
>>
>>>
>>>Only if you're being exceedingly pedantic and probably not even
>>>then. Webster 1913 lists, among other meanings,
>>>
>>>Free
>>>(...)
>>>"Liberated, by arriving at a certain age, from the control
>>>of parents, guardian, or master."
>>>
>>>The point presumably being that having been "liberated", you are now
>>>"free".
>>
>> (...)
>>
>>The English language has degenerated significantly in the last 30
>>years.
>> (...)
>>
>>Dictionaries used to be the arbiters of the language - any word or
>>meaning of a word not found in the dictionary was considered a
>>colloquial (slang) use.  Since the 1980's, an entry in the dictionary
>>has become little more than evidence of popularity as the major
>>dictionaries (OED, Webster, Cambridge, etc.) will now consider any
>>word they can find used in print.
>
>Apparantly, you missed the part where I referred to the 1913 edition
>of Webster. I have kept it in the quoted text above for your
>convenience. I can assure you that 1913 is both more than 30 years ago
>/and/ it is before 1980, in case that was in doubt.
>
>Cheers
>	Bent D

I didn't miss it.  Your post was just an opportunity to rant.

George
--
for email reply remove "/" from address


From juan at juanreyero.com  Thu Oct 18 04:32:07 2007
From: juan at juanreyero.com (juan at juanreyero.com)
Date: Thu, 18 Oct 2007 10:32:07 +0200
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<873awb5wgw.fsf@benfinney.id.au>
	<m2tzor5uox.fsf@antares.emea.hpqcorp.net>
	<87k5pn4efu.fsf@benfinney.id.au>
Message-ID: <m2hckoq0vs.fsf@antares.emea.hpqcorp.net>

> A further issue, that requires a change of interface: Please comply
> with PEP 8 <URL:http://www.python.org/dev/peps/pep-0008/> for your
> module interface. In particular, please name classes with TitleCase,
> and functions, methods, and instance names with
> lower_case.

Done, almost.  I should have seen that document before.  I
think magnitude is compliant now, both in its API and its
innards.  The only thing missing is to raise objects instead
of strings.

> Also: "precision" is the correct spelling of that word.

Now that's embarrassing.  Thanks.

jm


From donn.ingle at gmail.com  Mon Oct 29 16:43:32 2007
From: donn.ingle at gmail.com (Donn Ingle)
Date: Mon, 29 Oct 2007 22:43:32 +0200
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<mailman.573.1193658371.13605.python-list@python.org>
	<1193666679.216514.248300@o3g2000hsb.googlegroups.com>
Message-ID: <fg5geb$tt4$1@ger.gmane.org>

> for humans:
Sweet. Thanks, I'll give it a go. It's only for debugging and will make life
easier.

\d



From Josef.Robert.Novak at gmail.com  Wed Oct 24 06:31:01 2007
From: Josef.Robert.Novak at gmail.com (kettle)
Date: Wed, 24 Oct 2007 10:31:01 -0000
Subject: japanese encoding iso-2022-jp in python vs. perl
In-Reply-To: <1193210435.469081.168360@v29g2000prd.googlegroups.com>
References: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
	<1193210435.469081.168360@v29g2000prd.googlegroups.com>
Message-ID: <1193221861.332351.188960@e9g2000prf.googlegroups.com>

Thanks Leo, and everyone else, these were very helpful replies.  The
issue was exactly as Leo described, and I apologize for not being
aware of it, and thus not quite reporting it correctly.

At the moment I don't care about round-tripping between half-width and
full-width kana, rather I need only be able to rely on any particular
kana character be translated correctly to its half-width or full-width
equivalent, and I need the Japanese I send out to be readable.

I appreciate the 'implicit versus explicit' point, and have read about
it in a few different python mailing lists.  In this instance it seems
that perl perhaps ought to flash a warning notification regarding what
it is doing, but as this conversion between half-width and full-width
characters is by far the most logical one available, it also seems
reasonable that python might perhaps include such capabilities by
default, just as it currently includes the 'replace' option for
mapping missed characters generically to '?'.

I still haven't worked out the entire mapping routine, but Leo's hint
is probably sufficient to get it working with a bit more effort.

Again, thanks for the help.

-Joe

> Thanks that I have my crystal ball working. I can see clearly that the
> forth
> character of the input is 'HALFWIDTH KATAKANA LETTER ME' (U+FF92)
> which is
> not present in ISO-2022-JP as defined by RFC 1468 so python converts
> it into
> question mark as you requested. Meanwhile perl as usual is trying to
> guess what
> you want and silently converts that character into 'KATAKANA LETTER
> ME' (U+30E1)
> which is present in ISO-2022-JP.
>
> > Why can't python properly encode some of these
> > characters?
>
> Because "Explicit is better than implicit". Do you care about
> roundtripping?
> Do you care about width of characters? What about full-width " (U
> +FF02)? Python
> doesn't know answers to these questions so it doesn't do anything with
> your
> input. You have to do it yourself. Assuming you don't care about
> roundtripping
> and width here is an example demonstrating how to deal with narrow
> characters:
>
> from unicodedata import normalize
> iso2022_squeezing = dict((i, normalize('NFKC',unichr(i))) for i in
> range(0xFF61,0xFFE0))
> print repr(u'\uFF92'.translate(iso2022_squeezing))
>
> It prints u'\u30e1'. Feel free to ask questions if something is not
> clear.
>
> Note, this is just an example, I *don't* claim it does what you want
> for any character
> in FF61-FFDF range. You may want to carefully review the whole unicode
> block:http://www.unicode.org/charts/PDF/UFF00.pdf
>
>   -- Leo.




From devnew at gmail.com  Tue Oct 16 03:05:56 2007
From: devnew at gmail.com (devnew at gmail.com)
Date: Tue, 16 Oct 2007 07:05:56 -0000
Subject: PIL and getpixel()
Message-ID: <1192518356.021602.276860@y27g2000pre.googlegroups.com>

i am trying to get the pixel data using im.getpixel()
i am getting a tuple like (152,118,106) for a pixel in a RGB jpeg
image .
what i really want is an integer value representing a pixel ,like waht
i can get from java's BufferedImage.getRGB(x,y) ..

i am wondering if someone can advise me on how i can do this

thanx
dn



From ritu2cool.85 at gmail.com  Tue Oct  9 01:01:58 2007
From: ritu2cool.85 at gmail.com (ritu sharma)
Date: Tue, 9 Oct 2007 10:31:58 +0530
Subject: Query
Message-ID: <c196fe390710082201n6eb890cfjf38b192d7ab25fa8@mail.gmail.com>

Hi ,

I am using linked server to fetch data from Oracle database.

Now ,I have to use  FPN_STATUS='A'  in the query. Kindly tell me if there is
an escape sequence for  ' .

FROM OPENQUERY(FPDWH,
 'SELECT
      WGFP_OWN.GRS_FILE_PLAN_VERSION.FVN_STATUS FPN_STAT_CODE,
   WGFP_OWN.GRS_FILE_PLAN_STATUS.FPS_NAME FPN_STAT_NAME,
   WGFP_OWN.GRS_FILE_PLAN_VERSION.FVN_STAT_UPD_BY FPN_STAT_UPD_BY,

 FROM
   WGFP_OWN.GRS_FILE_PLAN_VERSION,
   WGFP_OWN.GRS_FILE_PLAN,
   WGFP_OWN.GRS_FILE_PLAN_STATUS,
   WGFP_OWN.GRS_SECTOR,
          (SELECT A.FVN_FPN_ID AS FPN_NO, A.FVN_ID AS FVN_ID
        FROM WGFP_OWN.GRS_FILE_PLAN_VERSION A, WGFP_OWN.GRS_FILE_PLAN B
      WHERE B.FPN_ID = A.FVN_FPN_ID
      AND A.FVN_VERSION=1
      AND (A.FVN_FPN_ID) NOT IN
         (SELECT C.FVN_FPN_ID AS FPN_NO_A
       FROM WGFP_OWN.GRS_FILE_PLAN_VERSION C, WGFP_OWN.GRS_FILE_PLAN D
       WHERE D.FPN_ID = C.FVN_FPN_ID
       AND C.FVN_STATUS ='A')
   UNION
   SELECT A.FVN_FPN_ID AS FPN_NO, A.FVN_ID AS FVN_ID
        FROM WGFP_OWN.GRS_FILE_PLAN_VERSION A, WGFP_OWN.GRS_FILE_PLAN B
     WHERE B.FPN_ID = A.FVN_FPN_ID
     AND *A.FVN_STATUS ='A'     --- Any alternative for ' character
*                --GROUP BY A.FVN_FPN_ID
    ) FVN_MAX

Now ,I have to use  FPN_STATUS='A'  in the query. Kindly tell me if there is
an escape sequence for  ' .

Hoping for an early reply.


 *Thanks *
*Ritu ***
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/aadd8e30/attachment.html>

From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 31 18:13:46 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 31 Oct 2007 22:13:46 -0000
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
	<1193836481.203103.111400@22g2000hsm.googlegroups.com>
Message-ID: <13ihvgqk7klhb9@corp.supernews.com>

On Wed, 31 Oct 2007 13:14:41 +0000, George Sakkis wrote:

> On Oct 31, 8:44 am, Neil Cerutti <horp... at yahoo.com> wrote:
>> On 2007-10-30, George Sakkis <george.sak... at gmail.com> wrote:
>>
>>
>>
>> > On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
>> >> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>>
>> >> > This is a FAQ:
>> >> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-
function...
>>
>> >> Holy Airy Persiflage Batman!
>>
>> >> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
>> >> (Intel)] on win32
>> >> Type "help", "copyright", "credits" or "license" for more
>> >> information.>>> import timeit
>> >> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
>> >> 0.20332271187463391
>> >> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>>
>> >> 0.48545737364457864
>>
>> > Common mistake; try this instead:
>>
>> > timeit.Timer('seqlen()',
>> >              'seq = range(100); seqlen=seq.__len__').timeit()
>>
>> Why would I want to do that?
> 
> 
> To realize that __len__ is actually faster than len in this case; your
> second timing is dominated by the time to do attribute lookup.


What Neil has done is the correct thing to measure in this case.

What you have measured is a local optimization that is only useful when 
you have a tight loop with lots of calls to the same len():


Len = sequence.__len__
while Len() < 100000:
    foo(sequence)


But what Neil is measuring is relevant for the more general case of 
calling len() on arbitrary objects at arbitrary times:

x = len(sequence)
y = 42 + len("xyz")
if len(records) == 12:
    print "twelve!"


To get the benefit of the micro-optimization you suggested, you would 
need to write this:

Len = sequence.__len__
x = Len()
Len = "xyz".__len__
y = 42 + Len()
Len = records.__len__
if Len() == 12:
    print "twelve!"


Not only is that an especially ugly, confusing piece of code, it is also 
counter-productive as you still have to do the method lookup every single 
time.

Taking the method lookup is an apple-and-oranges comparison. It is useful 
to know for the times when you don't want an apple, you want an orange 
(i.e. the tight loop example above).

This is an apples-and-apples comparison:

>>> import timeit
>>> timeit.Timer("Len = seq.__len__; Len()", "seq = range(12)").repeat()
[1.3109469413757324, 0.7687380313873291, 0.55280089378356934]
>>> timeit.Timer("len(seq)", "seq = range(12)").repeat()
[0.60111594200134277, 0.5977931022644043, 0.59935498237609863]


The time to do the lookup and call the method is about 0.6 microseconds 
whether you do it manually or let len() do it.

The logic behind the micro-optimization trick is to recognize when you 
can avoid the cost of repeated method lookups by doing it once only. That 
is not relevant to the question of whether len() should be a function or 
a method.



-- 
Steven.


From marco at sferacarta.com  Tue Oct 23 11:24:26 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Tue, 23 Oct 2007 17:24:26 +0200
Subject: Iteration for Factorials
In-Reply-To: <1193149619.244514.325360@t8g2000prg.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<1193149619.244514.325360@t8g2000prg.googlegroups.com>
Message-ID: <ImoTi.1420$BB6.26@tornado.fastwebnet.it>

Roberto Bonvallet wrote:

> import urllib
> import re
> urllib.URLopener.version = "Mozilla/4.0"
> 
> def fact(x):
>     r = re.compile(r"%d ! = (\d+)" % x)
>     for line in urllib.urlopen("http://www.google.cl/search?q=%d%%21" % x):
>         m = r.search(line)
>         if m:
>             return int(m.group(1))


You solution reminds me the web-based WTF calculator.

http://worsethanfailure.com/Articles/OMGWTF-Finalist-05-WTF-Web-Calc.aspx


From gagsl-py2 at yahoo.com.ar  Wed Oct 31 23:23:49 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 01 Nov 2007 00:23:49 -0300
Subject: capturing output of command line in an array
References: <1193842906.058058.29080@t8g2000prg.googlegroups.com>
	<mailman.699.1193846020.13605.python-list@python.org>
	<1193847249.528264.270150@k35g2000prh.googlegroups.com>
Message-ID: <op.t03fpzmwx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 31 Oct 2007 19:20:56 -0300, <amjadcsu at gmail.com> escribi?:

> I am looking to just get the node name from that info.
> I dont need all other info
> so my list would be just
> alist=[node13,node12,node8,node1 ....]
> is it possible??
>
>> > node13     2 (    0/   56) [  0.00,  0.00,  0.00] [   0.0,   0.0,
>> > 0.1,  99.9,   0.0] OFF
>> > node12     2 (    1/   63) [  0.99,  0.97,  0.91] [  46.6,   0.0,
>> > 3.7,  49.8,   0.0] OFF
>> > node8     2 (    1/   59) [  0.99,  0.97,  0.91] [  47.5,   0.0,
>> > 2.8,  49.7,   0.0] OFF

Try this:

import subprocess
p = subprocess.Popen( ["your","command","+args"], stdout=subprocess.PIPE)
lines = p.stdout.readlines()
p.wait()

If you are only interested in the first word in each line, you may replace  
the lines = ... above with this:

nodes = [line.split(' ', 1)[0] for line in p.stdout]

-- 
Gabriel Genellina



From arnodel at googlemail.com  Tue Oct  2 12:42:24 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Tue, 02 Oct 2007 09:42:24 -0700
Subject: Using fractions instead of floats
In-Reply-To: <slrnfg4bro.28k.horpner@FIAD06.norwich.edu>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
	<1191272365.225974.41660@w3g2000hsg.googlegroups.com>
	<slrnfg4bro.28k.horpner@FIAD06.norwich.edu>
Message-ID: <1191343344.454133.46790@n39g2000hsh.googlegroups.com>

On Oct 2, 12:42 pm, Neil Cerutti <horp... at yahoo.com> wrote:
> On 2007-10-01, Arnaud Delobelle <arno... at googlemail.com> wrote:
> > Scheme has prefix numeric operators, so that 1/2 is
> > unambiguously (for the interpreter and the user) a litteral for
> > 'the fraction 1/2'. You can't avoid the confusion in python, as
> > binary operators are infix. Of course, we could create a new
> > kind of litteral.  Let's see, / and // are already operators,
> > so why not use /// ? ;)
>
> But you wouldn't actually need a literal rational represention.

In which case rationals are better off in a module than in the
language!

> But I'm just playing Devil's Advocate here; I like rationals in
> Scheme and Lisp, but I don't see a need for them in Python.

> On the other hand, Python has had complex numbers a long time,
> and it doesn't need those more than rationals, does it? My guess
> is that it got complex numbers but not rationals because
> rationals just aren't very efficient.

Another guess could be that real numbers being closed under the four
arithmetic operations, there is no danger to accidentally step into
complex numbers. OTOH floats and rationals are two (conflicting) ways
of extending integers.

> But as a programmer, I'm mostly just a data-twiddler, and don't
> generally need either of those numeric type in my day-to-day
> work. So I'm not the guy to ask. ;)

I use rationals a lot, and I don't want them in the language :)

--
Arnaud




From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 24 08:27:55 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 24 Oct 2007 14:27:55 +0200
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
Message-ID: <5o8s2bFlhd8uU2@mid.individual.net>

TheFlyingDutchman wrote:
> I am trying to install Python 2.5 on Windows XP. It installs into
> the root directory on C:\ instead of C:\Python25 

BTW, what exactly is behind the idea to install to c:\python25
instead of %PROGRAMFILES%\python25?

Regards,


Bj?rn

-- 
BOFH excuse #339:

manager in the cable duct



From deets at nospam.web.de  Wed Oct 10 04:41:10 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 10 Oct 2007 10:41:10 +0200
Subject: Problem with argument parsing
References: <1191940442.108905.292810@50g2000hsm.googlegroups.com>
	<5n1keaFfoj0eU1@mid.uni-berlin.de>
	<1191995876.142576.242160@50g2000hsm.googlegroups.com>
Message-ID: <5n3hh6Ffsul2U1@mid.uni-berlin.de>

lgwe wrote:

> On 9 Okt, 17:18, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> lgwe wrote:
>> > I have a python-script: myscript, used to start a program on another
>> > computer and I use OptionParser in optpars.
>> > I use it like this: myscript -H host arg1 -x -y zzz
>> > I would like OptionParser to ignore all arguments after arg1, because
>> > these are options that should be used by the program started on the
>> > oter computer arg1 -x -y zzz.
>> > One solution is to write: myscript -H host "arg1 -x -y zzz"
>> > But is it in some way possible to instruct OptionParser to ignore -x -
>> > y zzz without  the "..."?
>>
>> Use -- to separate arguments to be parsed by OptionParser from the
>> to-be-ignored-ones, which is documented btw.
>>
>> Diez
> 
> Thanks!
> I understand that this must be documented.
> But I can't find if anywhere in
> http://docs.python.org/lib/module-optparse.html. (maybee I just cant see
> it, but it is there)

It's general unix-commandline-knowledge... but you are right of course. It
should be documented. Maybe you can file a documentation-bug or something?

Diez


From patrick.waldo at gmail.com  Thu Oct 25 10:36:09 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Thu, 25 Oct 2007 14:36:09 -0000
Subject: Regular Expression
In-Reply-To: <5o4o43FktnthU7@mid.uni-berlin.de>
References: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
	<5o4o43FktnthU7@mid.uni-berlin.de>
Message-ID: <1193322969.306956.233960@d55g2000hsg.googlegroups.com>

Marc, thank you for the example it made me realize where I was getting
things wrong.  I didn't realize how specific I needed to be.  Also
http://weitz.de/regex-coach/  really helped me test things out on this
one.  I realized I had some more exceptions like C18H34O2.1/2Cu and I
also realized I didn't really understand regular expressions (which I
still don't but I think it's getting better)

FORMULA = re.compile(r'([A-Z][A-Za-z0-9]+\.?[A-Za-z0-9]+/?[A-Za-
z0-9]+)')

This gets all Chemical names like C14H28 C18H34O2.1/2Cu C8H17ClO2, ie
a word that begins with a capital letter followed by any number of
upper or lower case letters and numbers followed by a possible .
followed by any number of upper or lower case letters and numbers
followed by a possible / followed by any number of upper or lower case
letters and numbers.  Say that five times fast!

So now I want to tell the program that if it finds the formula at the
end then continue, otherwise if it finds C.I. 75240 or any other type
of word that it should not be broken by a | and be lumped into the
whole line.  But now I get:

Traceback (most recent call last):
  File "C:\Python24\Lib\site-packages\pythonwin\pywin\framework
\scriptutils.py", line 310, in RunScript
    exec codeObject in __main__.__dict__
  File "C:\Documents and Settings\Patrick Waldo\My Documents\Python
\WORD\try5-2-file-1-1.py", line 32, in ?
    input = codecs.open(input_text, 'r','utf8')
  File "C:\Python24\lib\codecs.py", line 666, in open
    file = __builtin__.open(filename, mode, buffering)
IOError: [Errno 13] Permission denied: 'C:\\Documents and Settings\
\Patrick Waldo\\Desktop\\decernis\\DAD\\EINECS_SK\\text\\output'

Ideas?


#For text files in a directory...
#Analyzes a randomly organized UTF8 document with EINECS, CAS,
Chemical, and Chemical Formula
#into a document structured as EINECS|CAS|Chemical|Chemical Formula.

import os
import codecs
import re

path = "C:\\text"
path2 = "C:\\text\output"
EINECS = re.compile(r'^\d\d\d-\d\d\d-\d
$')
FORMULA = re.compile(r'([A-Z][A-Za-z0-9]+\.?[A-Za-z0-9]+/?[A-Za-
z0-9]+)')

def iter_elements(tokens):
    product = []
    for tok in tokens:
        if EINECS.match(tok) and len(product) >= 4:
            if product[-1] == FORMULA.findall(tok):
                product[2:-1] = [' '.join(product[2:-1])]
                yield product
                product = []
            else:
                product[2:-1] = [' '.join(product[2:])]
                yield product
                product = []
        product.append(tok)
    yield product

for text in os.listdir(path):
    input_text = os.path.join(path,text)
    output_text = os.path.join(path2,text)
    input = codecs.open(input_text, 'r','utf8')
    output = codecs.open(output_text, 'w', 'utf8')
    tokens = input.read().split()
    for element in iter_elements(tokens):
        output.write('|'.join(element))
        output.write("\r\n")

input.close()
output.close()



From daniel_nolan at msn.com  Mon Oct 29 11:56:05 2007
From: daniel_nolan at msn.com (daniel)
Date: Mon, 29 Oct 2007 08:56:05 -0700
Subject: IEC - cannot find button
In-Reply-To: <1193663081.249282.106150@50g2000hsm.googlegroups.com>
References: <1193637535.413630.252960@22g2000hsm.googlegroups.com>
	<1193663081.249282.106150@50g2000hsm.googlegroups.com>
Message-ID: <1193673365.693804.63460@y27g2000pre.googlegroups.com>

On Oct 29, 6:04 am, kyoso... at gmail.com wrote:
> On Oct 29, 12:58 am, daniel_no... at msn.com wrote:
>
>
>
> > I'm brand new to Python--and programming in general. I'm trying to use
> > IEC to control Internet Explorer. I've navigated to a page, and now
> > I'm trying to click a button. The button appears to be called 'PDF
> > Preview' but I honestly do not know whether that's the name or the
> > caption. Here is my code:
>
> >      from win32com.client import Dispatch
> >      import IEC
>
> >      .
> >      .
> >      .
>
> >      ie = IEC.IEController(window_num = 1)
> >      ie.Navigate(URL_part_1 + x + URL_part_2)
> >      ie.ClickButton(name='PDF Preview')
>
> > (I've also tried replacing name w/ caption but I get a similar error
> > message.) I get this error message:
>
> > Traceback (most recent call last):
> >   File "C:\Program Files\Python25\experiment", line 14, in <module>
> >     ie.ClickButton(name='PDF Preview')
> >   File "C:\Program Files\Python25\lib\IEC.py", line 126, in
> > ClickButton
> >     elem = elemcoll.item(i)
> >   File "<COMObject <unknown>>", line 3, in item
> > com_error: (-2147024891, 'Access is denied.', None, None)
>
> > I really have no idea how to interpret this. I'm pasting the button
> > tag below:
>
> > <td>
> >      <input type="button" value="PDF Preview"
> > onclick="javascript:performPdfPreview(2);"/>
> > </td>
>
> You might want to look at PAMIE instead. It sounds like a Python
> project that's aimed at automating Internet Explorer:http://sourceforge.net/projects/pamie/
>
> But if you really like COM, I found this tutorial:
>
> http://www.evilbitz.com/2006/10/22/python-ie-automation-thorough-tuto...
>
> I'm not very good with COM, but I would recommend that you do some
> research on it. From the traceback, I would guess that you don't have
> administrator privileges (of some sort) on the machine you're running
> the script on.
>
> Mike

Thanks for the input, Mike. Since I don't have much experience w/
either, I don't have a strong preference for COM over PAMIE. I'm just
frustrated my script isn't working. I guess it could have to do w/
privileges. I'm using a VPN connection. I tried turning off my
antivirus software before running the module. I can click on the
button I want manually, and get the page I need, so I wonder if I can
adjust some settings to allow Python to take control of certain
things? That or I thought it might have to do w/ a javascript error.
By looking at the tag, does 'PDF Preview' look like the name of the
button or the button caption? Let me know what you think.

Daniel



From java.oke at gmail.com  Thu Oct 18 16:36:02 2007
From: java.oke at gmail.com (j.oke)
Date: Thu, 18 Oct 2007 13:36:02 -0700
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
In-Reply-To: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
References: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
Message-ID: <1192739762.151628.132800@i38g2000prf.googlegroups.com>

On 18 Ott, 06:15, Xah Lee <x... at xahlee.org> wrote:
> [...]

Half lost on my firmness gains to more glad heart,
Or violent and from forage drives
A glimmering of all sun new begun
Both harp thy discourse they march'd,
Forth my early, is not without delay;
For their soft with whirlwind; and balm.
Undoubtedly he scornful turn'd round ninefold,
Though doubled now what redounds,
And chains these a lower world devote, yet inflicted?
Till body or rare, and best things else enjoy'd in heav'n
To stand divided light at ev'n and poise their eyes,
Or nourish, lik'ning spiritual, I have thou appear.

-Henley



From mensanator at aol.com  Wed Oct 24 19:09:38 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Wed, 24 Oct 2007 16:09:38 -0700
Subject: Python and Combinatorics
In-Reply-To: <471fc476$1@news.bezeqint.net>
References: <471fc476$1@news.bezeqint.net>
Message-ID: <1193267378.171825.233770@e34g2000pro.googlegroups.com>

On Oct 24, 5:20 pm, none <""atavory\"@(none)"> wrote:
>         Hello,
>
>         Is there some package to calculate combinatorical stuff like (n over
> k), i.e., n!/(k!(n - k!) ?

Sure, the gmpy module.

>>> import gmpy
>>> for m in xrange(10):
	for n in xrange(m+1):
		print '%4d' % (gmpy.comb(m,n)),
	print


   1
   1    1
   1    2    1
   1    3    3    1
   1    4    6    4    1
   1    5   10   10    5    1
   1    6   15   20   15    6    1
   1    7   21   35   35   21    7    1
   1    8   28   56   70   56   28    8    1
   1    9   36   84  126  126   84   36    9    1


>
>         I know it can be written in about 3 lines of code, but still...
>
>         Thanks,
>
>         Ami




From pavlovevidence at gmail.com  Wed Oct 31 10:59:58 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 31 Oct 2007 07:59:58 -0700
Subject: A Python 3000 Question
In-Reply-To: <slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
Message-ID: <1193842798.085242.22690@t8g2000prg.googlegroups.com>

On Oct 31, 8:44 am, Neil Cerutti <horp... at yahoo.com> wrote:
> On 2007-10-30, George Sakkis <george.sak... at gmail.com> wrote:
>
>
>
> > On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
> >> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>
> >> > This is a FAQ:
> >> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-function...
>
> >> Holy Airy Persiflage Batman!
>
> >> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
> >> win32
> >> Type "help", "copyright", "credits" or "license" for more information.>>> import timeit
> >> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
> >> 0.20332271187463391
> >> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>
> >> 0.48545737364457864
>
> > Common mistake; try this instead:
>
> > timeit.Timer('seqlen()',
> >              'seq = range(100); seqlen=seq.__len__').timeit()
>
> Why would I want to do that?

If your point is to measure the time of just the operation as
accurately as possible, you don't want the extra dict lookup in
seq.__len__ affecting things.  Though it seems to me that if your
intention is to determine if builtin or method style is faster, it's
not such a great idea to replace the method call with a builtin call.

As for what benefit there is for len to be a builtin:

Python considers len to be an operator for all intents and purposes.
Python chose to spell this operator like a regular function, but it
could easily have given a special syntax to the length operation (for
instance, $#x).

Do you think that, if the length operation had its own syntax, people
would be saying "No, length shouldn't be an operator, it should be a
method"?  I don't think so; length is a fundamental and ubiquitous
operation and it wouldn't be unreasonable to give it its own syntax.

That suggests to me that, when people complain that len should be a
method, their complaint is a superficial complaint about spelling.
They are not considering whether len is important enough to be an
operator or not.


Carl Banks



From steven.bethard at gmail.com  Mon Oct 22 14:48:21 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 22 Oct 2007 12:48:21 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193078577.129883.317680@k35g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
Message-ID: <P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>

Sunburned Surveyor wrote:
> I also intended to add statements creating properties from the getter
> and setter methods. I understand that getters and setters aren't
> really necessary if you aren't making a property. I just forgot to add
> the property statements to my example.

You still don't want to define the getters and setters if they're just 
going to set an attribute. Just use an attribute itself.

Java makes you define getters and setters because there's no way to make 
method calls look like an attribute access.  So in Java if you start 
with a public attribute, you can never adjust the API later.

In Python, you can use property() to make method calls look like 
attribute access.  This could be necessary if you have an existing API 
that used public attributes, but changes to your code require those 
attributes to do additional calculations now.

But if you're creating a class for the first time, it should *never* use 
property().  There's no need to retrofit anything.

STeVe


From deets at nospam.web.de  Thu Oct 11 03:40:37 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 09:40:37 +0200
Subject: "".join(string_generator()) fails to be magic
In-Reply-To: <mailman.71.1192084784.927.python-list@python.org>
References: <mailman.71.1192084784.927.python-list@python.org>
Message-ID: <5n62boFgcod7U1@mid.uni-berlin.de>

Matt Mackal schrieb:
> I have an application that occassionally is called upon to process
> strings that are a substantial portion of the size of memory. For
> various reasons, the resultant strings must fit completely in RAM.
> Occassionally, I need to join some large strings to build some even
> larger strings.
> 
> Unfortunately, there's no good way of doing this without using 2x the
> amount of memory as the result. You can get most of the way there with
> things like cStringIO or mmap objects, but when you want to actually
> get the result as a Python string, you run into the copy again.
> 
> Thus, it would be nice if there was a way to join the output of a
> string generator so that I didn't need to keep the partial strings in
> memory. <subject> would be the obvious way to do this, but it of
> course converts the generator output to a list first.

You can't built a contiguous string of bytes without copying them.

The question is: what do you need the resulting strings for? Depending 
on the use-case, it might be that you could spare yourself the actual 
concatenation, but instead use a generator like this:


def charit(strings):
     for s in strings:
         for c in s:
             yield c

Diez


From bbound at gmail.com  Mon Oct  8 01:04:54 2007
From: bbound at gmail.com (bbound at gmail.com)
Date: Mon, 08 Oct 2007 05:04:54 -0000
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <13gj0neh59oks91@corp.supernews.com>
References: <87tzt3ihev.fsf@kobe.laptop><m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
Message-ID: <1191819894.369786.130300@v3g2000hsg.googlegroups.com>

On Oct 7, 9:07 pm, Damien Kick <dk... at earthlink.net> wrote:
> Perhaps our word "man" (manas) still expresses something of precisely
> this feeling of self-satisfaction: man designated himself as the
> creature that measures values, evaluates and measures, as the "valuating
> animal as such".[1]

Don't both "man" and those words for measurement come ultimately from
words for "hand" (similarly to words like "manual", as in labor)? Our
clever hands with their opposable thumbs being considered a defining
characteristic. And our tool use thus derived. Handspans also having
been a common (if imprecise) early unit of measurement (along with
forearm-spans, as in cubits, strides, and foot-length, from which the
measurement in feet still derives its name).



From kaaveland at gmail.com  Sat Oct 13 07:50:02 2007
From: kaaveland at gmail.com (=?iso-8859-1?q?Robin_K=E5veland?=)
Date: Sat, 13 Oct 2007 11:50:02 -0000
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <1192276202.151145.306050@z24g2000prh.googlegroups.com>

On Oct 12, 12:58 pm, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> Hello,
> can I determine somehow if the iteration on a list of values is the last
> iteration?
>
> Example:
>
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
>
> that would print
>
> 1
> 2
> 9
>
> Can this be acomplished somehow?
>
> Thanks,
>
> Florian


If you want to do this over a list or a string, I'd just do:

for element in iterable[:-1]: print iterable
print iterable[-1]  * iterable[-1]

No need for it to get more advanced than that :)



From http  Thu Oct  4 15:39:19 2007
From: http (Paul Rubin)
Date: 04 Oct 2007 12:39:19 -0700
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
Message-ID: <7xlkaifz4o.fsf@ruckus.brouhaha.com>

brad <byte8bits at gmail.com> writes:
> Does anyone else feel that unittesting is too much work? Not in
> general, just the official unittest module for small to medium sized
> projects?

Yeah, unittest is sort of a Java-ism.  You might try the newer doctest
module instead.


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 18 13:30:54 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 19:30:54 +0200
Subject: Convert string to command..
In-Reply-To: <1192722090.740342.60950@i13g2000prf.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
Message-ID: <4717984e$0$439$426a74cc@news.free.fr>

Abandoned a ?crit :
(snip)
> import cPickle as pickle
> a="{2:3,4:6,2:7}"
> s=pickle.dumps(a, -1)
> g=pickle.loads(s);
> print g
> '{2:3,4:6,2:7}'
> 
> Thank you very much for your answer but result is a string ??
> 
Of course it's a string. That's what you pickled. What did you hope ? If 
you want a dict back, then pickle a dict.


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct  1 11:13:29 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 17:13:29 +0200
Subject: Select as dictionary...
In-Reply-To: <mailman.1337.1191248052.2658.python-list@python.org>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
Message-ID: <47010e97$0$7777$426a74cc@news.free.fr>

J. Clifford Dyer a ?crit :
> On Mon, Oct 01, 2007 at 03:50:59PM +0200, Bruno Desthuilliers wrote regarding Re: Select as dictionary...:
>> IIRC, postgres' db-api connector (well, at least one of them - I don't 
>> know which one you're using) has a DictCursor. You should find all you 
>> want to know in the relevant doc.
>>
> 
> Correct me if I'm wrong, but I think the DictCursor would output the following:
> 
> [{'id': 1, 'value': 5}, {'id': 2, 'value': 5}, ...]
> 
> But the OP wanted one dict with IDs as keys:
> 
> {1: 5, 2: 5, ...}

Hmmm... I did answer too fast, indeed. Thanks for pointing that out.



From bj_666 at gmx.net  Thu Oct 25 02:49:06 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 25 Oct 2007 06:49:06 GMT
Subject: Regular Expression question
References: <1193294043.936217.54090@q5g2000prf.googlegroups.com>
Message-ID: <5oasj2Fm1hl5U2@mid.uni-berlin.de>

On Thu, 25 Oct 2007 06:34:03 +0000, looping wrote:

> Hi,
> It's not really a Python question but I'm sure someone could help me.
> 
> When I use RE, I always have trouble with this kind of search:
> 
> Ex.
> 
> I've a text file:
> """
> create or replace package XXX
> ...
> 
> create or replace package body XXX
> ...
> """
> now I want to search the position (line) of this two string.
> 
> for the body I use:
> s = re.search(r'create\s+or\s+replace\s+package\s+body\s+', txt,
> re.IGNORECASE)
> 
> but how to search for the other line ?
> I want the same RE but explicitly without "body".

The write the same RE but explicitly without "body".  But I guess I didn't
understand your problem when the answer is that obvious.

Maybe you want to iterate over the text file line by line and match or
search within the line? Untested:

needle = re.compile(r'create\s+or\s+replace\s+package(\s+body)?\s+',
                    re.IGNORECASE)
for i, line in enumerate(lines):
    if needle.match(line):
        print 'match in line %d' % (i + 1)

Ciao,
	Marc 'BlackJack' Rintsch


From alia_khouri at yahoo.com  Tue Oct  2 03:16:25 2007
From: alia_khouri at yahoo.com (Alia Khouri)
Date: Tue, 02 Oct 2007 00:16:25 -0700
Subject: Python 3.0 migration plans?
In-Reply-To: <ns9Li.1172$4V6.1092@newssvr14.news.prodigy.net>
References: <mailman.1195.1190936289.2658.python-list@python.org>
	<1190942968.920485.311870@g4g2000hsf.googlegroups.com>
	<%q0Li.725$ih1.539@nlpi068.nbdc.sbc.com>
	<1i555ag.9ez4uvf4583jN%aleax@mac.com>
	<ns9Li.1172$4V6.1092@newssvr14.news.prodigy.net>
Message-ID: <1191309385.404530.292880@r29g2000hsg.googlegroups.com>

Couldn't agree with you more. What would be fantastic is if I could
drop into the Pypi (and/or use easy_install) and download
automatically compiled versions of extension modules for different
versions of python.

I'm sure the community at large would be happy to chip in an annual
fee to help build/maintain this infrastructure: I know my firm would.

PS: IMHO The growth of Ruby is, to a large extent, due to easy
installation of modules via its gem system...



On Sep 28, 6:53 pm, John Nagle <na... at animats.com> wrote:

>      Insofar as Python has an organization, it's not adequately managing
> extension modules.  Each extension module has its own infrastructure,
> with its own build procedures, its own bug list, and its own maintainers.
> There's not even an archive.  Unlike CPAN, Cheese Shop is just a directory of
> URLs.
>
>      Take a look at how Perl does it.  Here are the instructions on
> how to contribute to CPAN:
>
>        http://www.cpan.org/modules/04pause.html
>
> There's a way to get your module into the system, a standardized format,
> build, and installation procedure, and an archive which is mirrored.
> There's a common bug reporting system.  Modules abandoned by their
> original developers are not lost, and can be "adopted" by someone else.
>
>      Python doesn't have any of this.  And that's far more of a problem
> than Python 3.x.
>
>                                 John Nagle




From nogradi at gmail.com  Wed Oct  3 14:08:30 2007
From: nogradi at gmail.com (Daniel Nogradi)
Date: Wed, 3 Oct 2007 20:08:30 +0200
Subject: python autoconf macro for building ming extension
Message-ID: <5f56302b0710031108x65675b94kcc4bed884c3643c7@mail.gmail.com>

It might be slightly off topic here but couldn't find a more suitable
place for this question:

I'm trying to build the python binding for ming -- http://ming.sf.net
-- but for some reason the python macro for autoconf -- python.m4 --
doesn't seem to detect my python installation correctly. The strange
thing is that it seemingly detects everything correctly, but a final
check still fails. I have the python 2.5 source distribution installed
to /usr/local the standard location.

Configuring ming fails with:

checking for python... /usr/local/bin/python
checking for python2.5... (cached) /usr/local/bin/python
checking for a version of Python >= '2.1.0'... yes
checking for the distutils Python package... yes
checking for Python include path... -I/usr/local/include/python2.5
checking for Python library path... -L/usr/local/lib/python2.5 -lpython2.5
checking for Python site-packages path... /usr/local/lib/python2.5/site-packages
checking python extra libraries... -lpthread -ldl -lutil
checking python extra linking flags... -Xlinker -export-dynamic
checking consistency of all components of python development environment... no
configure: error:
  Could not link test program to Python. Maybe the main Python library has been
  installed in some non-standard library path. If so, pass it to configure,
  via the LDFLAGS environment variable.
  Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"
  ============================================================================
   ERROR!
   You probably have to install the development version of the Python package
   for your distribution.  The exact name of this package varies among them.
  ============================================================================


and all variables above are correct. It apparently found

PYTHON_CPPFLAGS=-I/usr/local/include/python2.5
PYTHON_LDFLAGS=-L/usr/local/lib/python2.5 -lpython2.5
PYTHON_SITE_PKG=/usr/local/lib/python2.5/site-packages
PYTHON_EXTRA_LIBS=-lpthread -ldl -lutil
PYTHON_EXTRA_LDFLAGS=-Xlinker -export-dynamic

all correctly, yet the final check fails. I even tried configuring
with PYTHON_NOVERSIONCHECK and LDFLAGS=-L/usr/local/lib/python2.5 and
gave the above environment variables manually but still the same final
check fails.

Apparently it's not a ming but an autoconf issue. Anyone familiar with
python.m4?


From robert.rawlins at thinkbluemedia.co.uk  Mon Oct 22 05:56:52 2007
From: robert.rawlins at thinkbluemedia.co.uk (Robert Rawlins - Think Blue)
Date: Mon, 22 Oct 2007 10:56:52 +0100
Subject: Check File Change Every 10 Seconds
Message-ID: <002701c81491$e09eb510$a1dc1f30$@rawlins@thinkbluemedia.co.uk>

Hello Chaps,

 

I've got a requirement to check a file for a change every 10 seconds or so,
and if the file has been modified since the last time I parsed its content
into the application then I need to parse it in again. However, I need this
process to not interrupt the rest of my application flow.

 

What is the best way to handle this? Is there some form of file watcher
module for python which can watch the file for me and then parse any changes
into the application memory? Or should I be spawning and unjoined thread
which contains and infinite loop which checks a date/time the file was
modified against an internal date/time variable for when the application
last parsed the file into memory?

 

I'll be interested to hear your ideas guys,

 

Thanks,

 

Rob

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/3f4ce362/attachment.html>

From piyush.subscription at gmail.com  Fri Oct 26 03:25:33 2007
From: piyush.subscription at gmail.com (Piyush Jain)
Date: Fri, 26 Oct 2007 12:55:33 +0530
Subject: modifying __class__
Message-ID: <19ac19520710260025w4a871cfekcc8f01a6d6143f17@mail.gmail.com>

Hi,
Itis possible to change the class of an object by assigning new value to
__class__
Is it possible to call my module when it is done.
For example,
object = ClassA()

object.__class__ = classB # I want to call my method when this statement is
executed.

I want to do it in a general way. For ex. , whenever __class__ is changed
for any object instance (of different classes), my own function is called.
How should I do it ?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071026/4e6a9967/attachment.html>

From MrJean1 at gmail.com  Tue Oct 30 00:15:06 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Tue, 30 Oct 2007 04:15:06 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193684775.643350.208230@y27g2000pre.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
	<1193684775.643350.208230@y27g2000pre.googlegroups.com>
Message-ID: <1193717706.876266.78150@v23g2000prn.googlegroups.com>

Here is one way to build a 64-bit Python binary on Solaris 10 using
SUN's compilers**.  This is probably not the recommended procedure but
it does create a partial, expected result.

Here are the 4 steps I used:

1 - Run  ./configure --without-gcc  --with-cxx-main=CC  --enable-64-
bit  ....

2 - Edit the generated Makefile and change 3 lines

    CC     = cc -xtarget=opteron -xarch=amd64
    CXX    = CC -xtarget=opteron -xarch=amd64
    MAINCC = CC -xtarget=opteron -xarch=amd64

    The -xtarget and -xarch flags must be adjusted for UltraSparc.

3 - Edit python source file ./Include/pyport.h before line 728 (in
Python 2.5.1) as follows.

    Add these 3 lines:

    #ifndef __GNUC__  /* non-GNU C/C++, like SUN */
    # undef LONG_BIT
    #endif

    such that LONG_BIT is #define'd next

    #ifndef LONG_BIT
    #define LONG_BIT (8 * SIZEOF_LONG)
    #endif

    before this error message can occur

    #if LONG_BIT != 8 * SIZEOF_LONG
    /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some
recent
     * 32-bit platforms using gcc.  We try to catch that here at
compile-time
     * rather than waiting for integer multiplication to trigger bogus
     * overflows.
     */
    #error "LONG_BIT definition appears wrong for platform (bad gcc/
glibc config?)."
    #endif

4 - Run make and check the resulting Python binary with  file ./
python.

However, make test still fails and that will require further
investigation.

/Jean Brouwers


**) Sun C/C++ 5.8 2005/10/14 on an Ultra 20 Opteron machine


On Oct 29, 12:06 pm, MrJean1 <MrJe... at gmail.com> wrote:
> Building 64-bit Python is still elusive. I tried various ways to add  -
> xtarget=opteron -xarch-amd64  to the C/C++ flags but that still fails
> to produce a 64-bit build.  Changing the Makefile is not sufficient
> since that causes compilation errors.
>
> It looks like the ./configure command must run with those additional
> flags.  Passing the flags in environment variables defining CC and CXX
> only works for CXX.  The additional flags do not appear on the C
> compiler command lines.
>
> /Jean Brouwers
>
> On Oct 28, 11:03 pm, plumb and tree <plumbandt... at gmail.com> wrote:
.....



From kirby.urner at gmail.com  Sun Oct 28 09:14:38 2007
From: kirby.urner at gmail.com (kirby urner)
Date: Sun, 28 Oct 2007 06:14:38 -0700
Subject: fclient project seeking co-coders
In-Reply-To: <1193568557.720305.82380@50g2000hsm.googlegroups.com>
References: <1193568557.720305.82380@50g2000hsm.googlegroups.com>
Message-ID: <f604188c0710280614s1d94ba76te3c076549432efda@mail.gmail.com>

Another Urner, that's interesting.  Not many of us.

Kirby Urner
Portland, Oregon
USA


On 10/28/07, J?rgen Urner <jUrner at arcor.de> wrote:
>
> Hello all,
>
> I Just recently registered a project fclient to sourceforge.net
> [http://sourceforge.net/projects/fclient]. fclient is intended to
> become desktop client for the freenet [freenetproject.org]
> network written in python and Qt4.
>
> fclient is very alpha, in fact only parts of the freenet client
> protocol
> are curently implementated and loads of work ahead. But I would
> appreciate very much finding interested co-coders to take part in the
> project.
>
> Me, I am no professional coder, but an enthusiast with one or the
> other year
> of python (and Qt) experience. If interested in the project (and
> freenet), feel free
> to drop a mail to the users mailing list at the project page.
>
>
> Have fun, Juergen
>
> --
> http://mail.python.org/mailman/listinfo/python-announce-list
>
>         Support the Python Software Foundation:
>         http://www.python.org/psf/donations.html
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071028/8af4d3b1/attachment.html>

From ricaraoz at gmail.com  Mon Oct  8 10:35:27 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Mon, 08 Oct 2007 11:35:27 -0300
Subject: Really basic problem
In-Reply-To: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
References: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
Message-ID: <470A402F.4070108@bigfoot.com>

tomamil wrote:
> i know this example is stupid and useless, but that's not the answer
> to my question.
> here it goes:
> 
> status = 0.0
> for i in range(10):
>    status = status + 0.1
> 
>    if status == 0.1:
>        print status
>    elif status == 0.2:
>        print status
>    elif status == 0.3:
>        print status
>    elif status == 0.4:
>        print status
>    elif status == 0.5:
>        print status
>    elif status == 0.6:
>        print status
>    elif status == 0.7:
>        print status
>    elif status == 0.8:
>        print status
>    elif status == 0.9:
>        print status
>    elif status == 1.0:
>        print status
> 
> the expected output:
> 0.1
> 0.2
> 0.3
> 0.4
> 0.5
> 0.6
> 0.7
> 0.8
> 0.9
> 1.0
> 
> but it gives me instead:
> 0.1
> 0.2
> 0.4
> 0.5
> 0.6
> 0.7
> 
> why?
> 
> thanks,
> 
> m.
> 

Replace :     status = status + 0.1
with    :     status = round(status + 0.1, 1)




From sjmachin at lexicon.net  Wed Oct 10 06:48:31 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 20:48:31 +1000
Subject: Mixing Python and C classes in a module
In-Reply-To: <1191985376.434309.128620@g4g2000hsf.googlegroups.com>
References: <87wstwibfl.fsf@keizer.soze.com>
	<4866bea60710090802s1ac3fde4vb3a4d17693448383@mail.gmail.com>
	<mailman.8.1191983584.927.python-list@python.org>
	<1191985376.434309.128620@g4g2000hsf.googlegroups.com>
Message-ID: <470cae03@news.eftel.com.au>

On 10/10/2007 1:02 PM, timaranz at gmail.com wrote:

> 
> It is easier to do it the other way around.
> Create module.py and _module.so and in module.py write:
> 
> from _module.so import *

It is even easier to type
     from _module import *
and somewhat more productive, too :-)




From joesox at gmail.com  Sat Oct 27 12:27:35 2007
From: joesox at gmail.com (JoeSox)
Date: Sat, 27 Oct 2007 09:27:35 -0700
Subject: Event for multithread help advice
Message-ID: <785694cd0710270927m3934d2deqae2c9c1a14a3cb66@mail.gmail.com>

I have two threads going
class guiThread(threading.Thread)
class mainThread(threading.Thread)

Within the guiThread, I have an instance of class GUIFramework(Frame)
in this Tkinter instance I have a ListBox.

The second thread, mainThread, has an instance of a custom class the
will need to send out text or other objects to the gui.

What is the best or easiest way to send, let's say text, from
mainThread to the guiThread ListBox?

Should I use a custom Event class, pubsub, or Queue?

This is the way I have things right now (not in its entirety):
-----
start.py
import threading
import thread
import time
import GUIFramework
import myFoo
class guiThread(threading.Thread):
    def __init__(self, threadID, name):
        self.threadID = threadID
        self.name = name
        self.guiFrame = GUIFramework(master=None)
        threading.Thread.__init__(self)
    def run(self):
        print "Starting " + self.name
        self.guiFrame.mainloop()
        print "Exiting " + self.name

class mainThread(threading.Thread):
    def __init__(self, threadID, name):
        self.threadID = threadID
        self.name = name
        self.myFoo = myFoo()
        threading.Thread.__init__(self)
    def run(self):
        print "Starting " + self.name
        self.myFoo.alive()
        print "Exiting " + self.name

def start():
    """ Start """
    #Create new threads
    threadgui = guiThread(1, "threadgui")
    threadmain= carlThread(2, "threadmain")
    #Start new Threads
    threadgui.start()
    threadmain.run()
    while threadmain.isAlive():
        if not threadgui.isAlive():
            doExit = 1
    pass
    print "Exiting Main Thread"

if __name__ == '__main__':
    start()

-----
I've tried a fews things but I really haven't had any luck.
-- 
Thanks, Joe


From dokondr at gmail.com  Tue Oct 16 07:20:47 2007
From: dokondr at gmail.com (Dmitri O.Kondratiev)
Date: Tue, 16 Oct 2007 15:20:47 +0400
Subject: Newbi Q: What is a rational for strings not being lists in Python?
In-Reply-To: <9e95df10710151303s117658a5xde18c577d929f9ae@mail.gmail.com>
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
	<9e95df10710151303s117658a5xde18c577d929f9ae@mail.gmail.com>
Message-ID: <53396d9e0710160420l3055fea5u69cf7bfa1e3ec01d@mail.gmail.com>

On 10/16/07, Matt McCredie <mccredie at gmail.com> wrote:
[quote]

> The example you posted won't work with tuples either because they,
> like strings, are also immutable. So, the best way to get the posted
> code to work (which is a bad way to go about reversing a string, but I
> digress)
>
[end-quote]

I agree, my first example:

def reverse1(xs):
    if xs == []:
        return xs
    else:
        return (reverse1 (xs[1:])) + [xs[0]]

is very inefficient. I posted it just to illustrate my question about
strings and lists in Python.
The cost of reverse1() is proportional to:
(N - 1) + (N -2) + ...+1 = N(N - 1) /2, which in turn is ~ square(N),
where N is the number of elements in the list.

For example, reverse2() demonstrates a better algorithm, with cost
proportional to N:

def head(xs) :
    if xs == []:
        return []
    else:
        return xs[0]

def tail(xs) :
    if xs == []:
        return []
    else:
        return xs[1:]

def addHead (acc, xs):
    if xs == []:
        return acc
    else:
        return addHead ([head(xs)] + acc, tail(xs))

def reverse2 (xs):
    if xs == []:
        return []
    else:
        return addHead([], xs)

 [quote]

> is to cast the input parameter to a list first. The returned
> value will always be a list, but you will simply have to convert it
> back to the appropriate type when you are done.

[end-quote]

Casting and writing wrapper classes is not interesting. Life becomes much
easier when  String is a subtype of List, and when you have polymorphic
functions making no difference between String and List.

[quote]

> What is the purpose if immutability? It allows a value to be hashed. I
> don't want to get into a discussion about methods for hashing mutable
> types, if you are interested just do a search on the list archives.
> Hashing allows for quick comparisons of values, but more importantly
> it allows for values to be used as keys for the dict type. This is
> very important because, as you will soon find out if you keep learning
> the language, all namespaces in python are implemented as dicts.

[end-quote]

As for me, I am perfectly happy with immutable types, I would rather do
without mutable ones. And thanks, everybody, for reminding me that Python is
a 'side effect' language, from which  by definition follows that it should
have mutable lists along with immutable strings. So answer to my question "What
is a rational for strings not being lists in Python?" is quite
trivial, as Simon
B. (simon at brunningonline.net)  <simon at brunningonline.net>wrote: "Lists are
mutable, strings are not, so so strings can't support all a list's methods."

Sorry again for trivial question :(worked too much with Haskell recently and
mostly forgot about mutable types , I guess ) ...

[quote]

So... if you want a mutable string, just cast it to a list, do your
> operations and cast it back to a string.
>
> Incidentally, the proper method for converting a list of characters to
> a string is by using the join method on an empty string.
>
> >>> s = "I am a string"
> >>> x = list(s)
> >>> x
> ['I', ' ', 'a', 'm', ' ', 'a', ' ', 's', 't', 'r', 'i', 'n', 'g']
> >>> "".join(x)
> 'I am a string'
>
>
> Matt
>

[end-quote]

-- 
Dmitri O. Kondratiev
dokondr at gmail.com
http://www.geocities.com/dkondr
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/28c17a0a/attachment.html>

From sanxiyn at gmail.com  Mon Oct 15 09:38:54 2007
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Mon, 15 Oct 2007 22:38:54 +0900
Subject: [ANN] IronPython Community Edition r7
Message-ID: <5b0248170710150638r7f405bb2l2a32d334e7ad4478@mail.gmail.com>

This is the seventh release of IronPython Community Edition (IPCE).

Download from SourceForge:
http://sourceforge.net/projects/fepy

FePy project aims to provide enhancements and add-ons for IronPython.
http://fepy.sourceforge.net/

This work was in part supported by Mozilla Corporation.

FePy project got a blog!
http://fepy.blogspot.com/

FePy blog documents two developments not included in this release.
Files under trunk/pyprof/, which tries to implement sys.setprofile
with Mono profiler API. (Thanks to Miguel de Icaza and Paolo Molaro
for help.) Files under bench/, which benchmarks simple IronPython
programs to measure progress of Mono runtime.

This release comes with both IronPython 1.1 and IronPython 2.0 Alpha
5. IronPython 1.x is stable on Mono. IronPython 2.x isn't. For
example, importing string module will crash runtime for Mono 1.2.5.
(But os module works fine, which is much more complex. It's a bit of
hit and miss.)

This release is built with Mono 1.2.5.1. The minimum Mono version
needed to compile and run for IronPython 1.x is 1.2.3. For IronPython
2.x it's 1.2.5. Mono 1.2.5 and 1.2.5.1 are same except for ASP.NET
bugfixes. DLR-based languages won't work with Mono versions before
1.2.5. Please check your Mono version before reporting any problems.

Changes in this release follow. Contributions are credited in parentheses.

IronPython

IronPython 2.0 Alpha 5.

Libraries

dbapi module handles DBNull correctly. (Carsten Haese)
pyexpat module handles DTD. (Shozo Arai)

Bundles

Following modules are now included: decimal, modulefinder, pkgutil, smtplib.
pystone benchmark. (It's under Lib/test.)

irclib, which works great. Try this example as a sanity test.
https://fepy.svn.sourceforge.net/svnroot/fepy/trunk/example/irc_test.py

Patches

Patches are documented here.
http://fepy.sourceforge.net/patches.html

New in this release:

For 1.x
patch-ironpython-option-s

For 2.x
patch-{325478,328022,333647} # Numbers refer to Mono bugs
patch-console
patch-cs0177
patch-debug-define
patch-initialize-builtins

Build system

Use NAnt to build IronPython 2.x.
Use quilt to manage patches.
Patches to build all IronPython 2 Alpha releases.
- AssemblyVersion.cs was missing in Alpha 3. (Miguel de Icaza)
Include both IronPython 1.x and 2.x, but share the library using site.py.

Misc

Ms-PL is now included in licenses.

-- 
Seo Sanghyeon


From rcdailey at gmail.com  Mon Oct  8 16:39:23 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Mon, 8 Oct 2007 15:39:23 -0500
Subject: csv module and Unicode
In-Reply-To: <496954360710051510u4150742cyf1268444c3760862@mail.gmail.com>
References: <496954360710051510u4150742cyf1268444c3760862@mail.gmail.com>
Message-ID: <496954360710081339g56254317ye6afd558154a437c@mail.gmail.com>

Wow; I guess this is a REAL problem! I would have thought that something as
common as Unicode CSV would have been supported by SOMEONE.

On 10/5/07, Robert Dailey <rcdailey at gmail.com> wrote:
>
> Hi,
>
> According to the Python 2.5 documentation, Unicode is not supported
> through the CSV module. Is there some third-party CSV module I can use that
> has Unicode support? Thanks.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071008/1f0c2566/attachment.html>

From steve at REMOVE-THIS-cybersource.com.au  Sun Oct  7 10:47:57 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 07 Oct 2007 14:47:57 -0000
Subject: Override 'and' and 'or'
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<4708eb82$0$30379$9b4e6d93@newsspool4.arcor-online.net>
	<4708ec23$0$30379$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <13ghsctf6ksfaa9@corp.supernews.com>

On Sun, 07 Oct 2007 16:24:35 +0200, Wildemar Wildenburger wrote:

> Wildemar Wildenburger wrote:
>> [whate everyone else wrote :(]
>> 
>> /W
> 
> Dangit! 4th of 4.
> Gotta type quicker.


That's okay, in two weeks time there will be 139 messages in this thread, 
it will have devolved into an argument about whether Python's truth-
testing semantics are better or worse than whatever Java/Lisp/Haskell/
Ruby does, and *then* somebody will respond to the Original Poster with 
"customize the __and__ and __or__ methods of your class".

Happens every time.



-- 
Steven.


From arkanes at gmail.com  Mon Oct 22 14:23:19 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 22 Oct 2007 13:23:19 -0500
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193076352.576143.123260@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
Message-ID: <4866bea60710221123g4170a722vd70af3c97dbc0681@mail.gmail.com>

On 10/22/07, Sunburned Surveyor <sunburned.surveyor at gmail.com> wrote:
> On Oct 22, 10:26 am, "Chris Mellon" <arka... at gmail.com> wrote:
> > On 10/22/07, Sunburned Surveyor <sunburned.surve... at gmail.com> wrote:
> >
> >
> >
> >
> >
> > > I was thinking of a way I could make writing Python Class Files a
> > > little less painful. I was considering a Ptyhon script that read a
> > > file with a list of property names and method names and then generated
> > > a skeleton class file.
> >
> > > I was even thinking of automatically generating the shell for doc
> > > strings and epydoc tags.
> >
> > > Is there existing scripts that do something like this? If not, I will
> > > try to come up with something. If I'm sucessful I'll release the code
> > > under the GPL and will report back to the list.
> >
> > > However, I thought I would check here first so that I don't reinvent
> > > the wheel.
> >
> > > Thanks,
> >
> > > Scott Huey
> >
> > I can't think of a single reason why you would ever want to do this,
> > since your "list of method and property names" would be just as
> > verbose as just typing the actual python code.
> >
> > Auto generated documentation stubs are considered harmful because they
> > take the place of real documentation.- Hide quoted text -
> >
> > - Show quoted text -
>
> Chris,
>
> You wrote: " can't think of a single reason why you would ever want to
> do this,
> since your "list of method and property names" would be just as
> verbose as just typing the actual python code."
>
> I don't think I understand how this would be the same amount of
> typing. Consider the following example that would generate a Monster
> class file from an input text file (I only did one property and method
> in generated class file.):
>
> Contents of input text file:
>
> [Name]
> Fire Breathing Dragon
>
> [Properties]
> Strength
> Scariness
> Endurance
>
> [Methods]
> eatMaiden argMaiden
> fightKnight argKnight
>
> Generated Python Class File:
>
> def class FireBreathingDragon:
>
>    def getStrength(self):
>       """
>       Docstring goes here.
>
>       @return
>       @rtype
>       """
>       return self.strength
>
>    def setStrength(self, argStrength):
>       """
>       Docstring goes here.
>
>       @param argStrength
>       @ptype
>       """
>       return self.strength
>
>    def eatMaiden(self, argMaiden):
>       """
>       Docstring goes here.
>
>       @param argMaiden
>       @ptype
>       """
>

Your getters/setters are useless (Python isn't Java) and so are the
docstrings, because you have to write them over again anyway. Removing
them results in 3 lines of code, quite a bit shorter than your  input
file, and it doesn't have any of the quite well known issues with this
sort of boiler plate code generation.


From larry.bates at websafe.com  Wed Oct 10 08:26:01 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 10 Oct 2007 07:26:01 -0500
Subject: Exceptions: Logging TB and local variables?
In-Reply-To: <1191989030.598822.283420@50g2000hsm.googlegroups.com>
References: <1191989030.598822.283420@50g2000hsm.googlegroups.com>
Message-ID: <470CC4D9.3010401@websafe.com>

allen.fowler wrote:
> Hi,
> 
> My code looks like this:
> 
> for item in bigset:
>   self.__sub1(item)
>   self.__sub2(item)
>   self.__sub3(item)
> 
> # the subX functions, in turn, use various 3rd party modules.
> 
> 
> Now, I would like to do this:
> 
> for item in bigset:
>   try:
>     self.__sub1(item)
>     self.__sub2(item)
>     self.__sub3(item)
>   except StandardError:
>     # Log error and continue to next item in set.
>     log_error_to_file()
> 
> 
> In the error log, I would like to record various local variables that
> existed in subX at the time the Exception was thrown... (even though
> the actuall exception may have been thrown from deep inside some 3rd
> party module that subX called)
> 
> How can I do this?
> 
> Thank you,
> Allen
> 


Two possibilieies:

You will need to determine ALL the exceptions that the 3rd party party modules 
can raise.  If they are custom exceptions you will need to import them into your 
application from their modules.

example:

say that 3rd party modules raise TransientError, IOError, and ValueError 
exceptions.  TransientError is a custom exception from module foo

from foo import TransientError

for item in bigset:
   try:
     self.__sub1(item)
     self.__sub2(item)
     self.__sub3(item)
   except (TransientError, IOError, ValueError):
     # Log error and continue to next item in set.
     log_error_to_file()


2) Hook exception traceback handler

def myTraceBackHandler(type, value, tb):
     global <variables I want to dump during traceback>
     #
     # This function allows the user to redefine what happens if the program
     # aborts due to an uncaught exception.
     # This provides a way to get a "partial" session log if the program
     # aborts"as well as some information about what caused the program to
     # abort.
     #
     import traceback
     #
     # Get traceback lines
     #
     tblines=traceback.format_exception(type, value, tb)
     #
     # Write some lines to log
     #
     log_error_to_file()
     #
     # Always write the exceptions to screen
     #
     sys.exit('\n'.join(tblines))


Hope this helps.

-Larry


From Scott.Daniels at Acm.Org  Wed Oct 24 23:45:57 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 24 Oct 2007 20:45:57 -0700
Subject: Test for a unicode string
In-Reply-To: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
References: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
Message-ID: <13i04776fvf559@corp.supernews.com>

goldtech wrote:
> I have a regular expression test in a script. When a unicode character
> get tested in the regex it gives an error:
> 
> UnicodeError: ASCII decoding error: ordinal not in range(128)
> 
> Question: Is there a way to test a string for unicode chars (ie. test
> if a string will throw the error cited above).

How about:

     if ord(max(thestring)) >= 128:
         print 'whatever you want'

-Scott David Daniels
Scott.Daniels at Acm.Org


From stefan.behnel-n05pAM at web.de  Tue Oct 23 02:38:17 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Tue, 23 Oct 2007 08:38:17 +0200
Subject: ignoring chinese characters parsing xml file
In-Reply-To: <mailman.345.1193088585.13605.python-list@python.org>
References: <mailman.340.1193081085.13605.python-list@python.org>	<5o4evvFktnthU5@mid.uni-berlin.de>
	<mailman.345.1193088585.13605.python-list@python.org>
Message-ID: <471D96D9.6070107@web.de>

Fabian L?pez wrote:
> Thanks Mark, the code is like this. The attrib name is the problem:
> 
> from lxml import etree
> 
> context = etree.iterparse("file.xml")
> for action, elem in context:
>     if elem.tag == "weblog":
>         print action, elem.tag , elem.attrib["name"],elem.attrib["url"],

The problem is the print statement. Looks like your terminal encoding (that
Python needs to encode the unicode string to) can't handle these unicode
characters.

Stefan


From stefan.arentz at gmail.com  Tue Oct  9 03:28:16 2007
From: stefan.arentz at gmail.com (Stefan Arentz)
Date: 09 Oct 2007 09:28:16 +0200
Subject: Accessing 'Package Data'
Message-ID: <87bqb8wxv3.fsf@keizer.soze.com>


At http://docs.python.org/dist/node12.html it is described how to add
package data to a module. This was pretty easy to do, but now how do I
access this data from my module? Is there an API to load a 'package
resource' ala Java's classloader?

 S.


From arkanes at gmail.com  Tue Oct  9 11:00:43 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 10:00:43 -0500
Subject: List loops
In-Reply-To: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>
References: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>
Message-ID: <4866bea60710090800u5c871c04ldd964fcac36ecc63@mail.gmail.com>

On 10/9/07, Tommy Grav <tgrav at mac.com> wrote:
> Hi everyone,
>
>    I have a list of objects where I have want to do two loops.
> I want to loop over the list and inside this loop, work on all
> the elements of the list after the one being handled in the outer
> loop. I can of course do this with indexes:
>
>  >>> alist = range(3)
>  >>> for i in xrange(len(alist)):
> ...   for j in xrange(i+1,len(alist)):
> ...     print i,j,alist[i],alist[j]
> ...
> 0 1 0 1
> 0 2 0 2
> 1 2 1 2
>  >>>
>
>
> Is there a way to do this without using indexes?
>

>>> for idx, i in enumerate(alist):
...     for jdx, j in enumerate(range(1,4)):
...         print idx, jdx, i, j
...
0 0 0 1
0 1 0 2
0 2 0 3
1 0 1 1
1 1 1 2
1 2 1 3
2 0 2 1
2 1 2 2
2 2 2 3
>>>


From amdescombes at spad.eu  Mon Oct 15 05:31:59 2007
From: amdescombes at spad.eu (amdescombes)
Date: Mon, 15 Oct 2007 11:31:59 +0200
Subject: Memory Problems in Windows 2003 Server
In-Reply-To: <6b63h3p842g6ggafqbc5d4f8n4o48ramdm@4ax.com>
References: <470f7857$0$27795$426a74cc@news.free.fr>
	<feo0f7$jd1$2@solaris.cc.vt.edu>
	<4710a5ad$0$26731$426a74cc@news.free.fr>
	<6b63h3p842g6ggafqbc5d4f8n4o48ramdm@4ax.com>
Message-ID: <4713338b$0$20269$426a74cc@news.free.fr>

Yes, I think that might be the issue, perhaps I could implement the 
solution using several dictionaries instead of just one.
Are there any classes that implement disk based dictionaries?

Thanks,

Andre

> 
> I don't know whether Python dictionaries must live in a contiguous piece of
> memory, but if so, that could be the issue.  The system DLLs in Server 2003
> have been "rebased" in such a way that they chop up the virtual address
> space more than XP.  Even though there is more virtual memory available, it
> is fragmented.


From beema.shafreen at gmail.com  Mon Oct 29 12:20:51 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Mon, 29 Oct 2007 21:50:51 +0530
Subject: two files into an alternate list
Message-ID: <aa405c1f0710290920v5c548269p24762e41790216cb@mail.gmail.com>

hi everybody ,
    i have a file :
         file 1:
1
2
3
4
5
6


file2:
a
b
c
d
e
f
how do i make the two files into  list like this =
[1,a,2,b,3,c,4,d,5,e,6,f]

regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/780a468c/attachment.html>

From gagsl-py2 at yahoo.com.ar  Wed Oct 24 00:47:47 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 24 Oct 2007 01:47:47 -0300
Subject: How to find out which functions exist?
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
Message-ID: <op.t0op9xo0x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 23 Oct 2007 18:10:04 -0300, mrstephengross  
<mrstephengross at hotmail.com> escribi?:

> Let's say I have a python file with a base class, and a few derived
> classes:
>
> class Base:
>   pass
>
> class Derived1(Base):
>   pass
>
> class Derived2(Base):
>   pass
>
> Is there a way I can find out the classes that have been derived from
> Base?

If Base were a new-style class, you could use Base.__subclasses__()

-- 
Gabriel Genellina



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 24 20:54:04 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 25 Oct 2007 00:54:04 -0000
Subject: list (range) syntax
References: <pan.2007.10.24.22.44.28.712782@vscht.cz>
	<1193268500.077940.182790@y27g2000pre.googlegroups.com>
Message-ID: <13hvq9cj6k9hf18@corp.supernews.com>

On Wed, 24 Oct 2007 16:28:20 -0700, mensanator at aol.com wrote:

> On Oct 24, 5:44 pm, Michal Bozon <boz... at vscht.cz> wrote:
>> many Python newcomers are confused why range(10), does not include 10.
> 
> How can they be confused?

Because in common English, counting starts at 1 and ranges normally 
include both end points (that is, it is a "closed" interval). If you say 
"I'll be away from the 4th to the 7th" and then turn up on the 7th, 
nearly everyone will wonder why you're back a day early.


> Does base 10 have a digit ten?
> Does base  2 have a digit two?
> Does base 16 have a digit sixteen?
> 
> Haven't you stopped counting on your fingers when you leave grade
> school?

range(N) is not designed to return the digits used in base N strings, and 
any connection is weak (what base does range(3, 25, 4) correspond to?). 
What little correspondence there is is an accidental coincidence of how 
we write numbers, not a fundamental fact about half-open intervals like 
range().

Having said that, and regardless of common English usage, using half-open 
intervals almost always leads to simpler programming and fewer errors. 
Creating syntax support for beginners to make extra off-by-one bugs is a 
terrible idea, no matter how seductive it seems for newbies. I know Ruby 
has (to my mind confusing!) support for both closed and half-open 
intervals, but I wonder how useful it is in practice?

Ruby expression => Python equivalent

1..5 => range(1, 6)
1...5 => range(1, 5)



-- 
Steven.


From http  Fri Oct 12 23:13:58 2007
From: http (Paul Rubin)
Date: 12 Oct 2007 20:13:58 -0700
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<85zlyrutux.fsf@lola.goethe.zz>
	<rqhrg3d2thcqaip790k1eb6t8cdk2g8d8v@4ax.com>
	<85lka8p2h4.fsf@lola.goethe.zz>
Message-ID: <7xy7e7yadl.fsf@ruckus.brouhaha.com>

David Kastrup <dak at gnu.org> writes:
> There is a Scheme implementation (I keep forgetting the name) which
> actually does both: it actually uses the call stack but never returns,
> and the garbage collection includes the stack.

That would be Chicken Scheme.

http://en.wikipedia.org/wiki/Chicken_(Scheme_implementation)


From carsten at uniqsys.com  Wed Oct 10 19:40:13 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 10 Oct 2007 19:40:13 -0400
Subject: How to "dereference" an iterator?
In-Reply-To: <496954360710101601s5cc774dby16f01ba532ef096e@mail.gmail.com>
References: <496954360710101601s5cc774dby16f01ba532ef096e@mail.gmail.com>
Message-ID: <1192059613.3385.18.camel@localhost.localdomain>

On Wed, 2007-10-10 at 18:01 -0500, Robert Dailey wrote:
> Hi,
> 
> Suppose I wanted to manually iterate over a container, for example:
> 
> mylist = [1,2,3,4,5,6]
> 
> it = iter(mylist)
> while True:
>     print it
>     it.next()
> 
> In the example above, the print doesn't print the VALUE that the
> iterator currently represents, it prints the iterator itself. How can
> I get the value 'it' represents so I can either modify that value or
> print it? Thanks. 

I have the feeling that you're not telling us the actual problem you're
trying to solve. Python iterators do not, in general, have a notion of a
"current" value. The only have a notion of a next value, which is
returned by next(). If you need to use that value multiple times, you
need to store it somewhere.

If you really must use a while loop, it'll have to look something like
this (add handling of StopIteration to taste):

while True:
    current = it.next()
    print current

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From sakradevanamindra at gmail.com  Mon Oct 15 23:55:45 2007
From: sakradevanamindra at gmail.com (Shoryuken)
Date: Mon, 15 Oct 2007 20:55:45 -0700
Subject: use lines as argument to a command
In-Reply-To: <mailman.13.1192431559.13605.python-list@python.org>
References: <1192420069.166779.55230@y27g2000pre.googlegroups.com>
	<mailman.13.1192431559.13605.python-list@python.org>
Message-ID: <1192506945.018694.289000@t8g2000prg.googlegroups.com>

> I guess that you want to loop over a file and for each line in the
> file you want to call some
> external program with the line as the argument.
>
> Have a look at subprocess module
>  http://docs.python.org/lib/module-subprocess.html
>
> If there is some else that you meant, please specify .
>
> Cheers,
>
> --
> --
> Amit Khemka

Thanks alot, its working now. But I have another question (sorry I'm
so noob), how can I redirect a command's output to a file (just like
executing a linux command "dmesg>>stat.txt")?




From chris.lyon at spritenote.co.uk  Wed Oct 31 12:24:56 2007
From: chris.lyon at spritenote.co.uk (wyleu)
Date: Wed, 31 Oct 2007 09:24:56 -0700
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <47288E4D.6010301@v.loewis.de>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
	<1193813238.978699.154830@57g2000hsv.googlegroups.com>
	<47288E4D.6010301@v.loewis.de>
Message-ID: <1193847896.441329.315560@o80g2000hse.googlegroups.com>


> So where it tk.h located?


tk.h is now in just about every directory called include that could in
anyway be connected with this and indeed it does appear in the make
file printout:

/usr/bin/install -c -m 644 ./Include/sysmodule.h /usr/local/include/
python2.5
/usr/bin/install -c -m 644 ./Include/timefuncs.h /usr/local/include/
python2.5
/usr/bin/install -c -m 644 ./Include/tk.h /usr/local/include/python2.5
/usr/bin/install -c -m 644 ./Include/token.h /usr/local/include/
python2.5
/usr/bin/install -c -m 644 ./Include/traceback.h /usr/local/include/
python2.5

however it still generates the same error message,
I've tried debugging setup.py in the distribution directory with idle
( python2.4.3 versions ) but not surprisingly that doesn't do anything
too impressive, as you would expect.
Short of stuffing lots of print statements in there to actual try and
locate the file names it's failing on I'm at a loss to see where to go
next.



From bignose+hates-spam at benfinney.id.au  Tue Oct 16 18:49:12 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 17 Oct 2007 08:49:12 +1000
Subject: why doesn't have this list a "reply-to" ?
References: <471530E3.9090602@gmail.com>
	<mailman.96.1192573101.13605.python-list@python.org>
Message-ID: <87ejfu3cbb.fsf@benfinney.id.au>

Robert Kern <robert.kern at gmail.com> writes:

> It's not universal. Many people consider it harmful. Google
> "reply-to considered harmful" for a variety of opinions, for and
> against.

The arguments in support of munging have been defeated, since
2001. Munging the "Reply-To" field is in violation of standards, and
completely unnecessary. Any remaining lack is for the mail user agent
provider to fix, in accordance with standards.

    <URL:http://woozle.org/~neale/papers/reply-to-still-harmful.html>

-- 
 \     "I wrote a song, but I can't read music so I don't know what it |
  `\    is. Every once in a while I'll be listening to the radio and I |
_o__)     say, 'I think I might have written that.'"  -- Steven Wright |
Ben Finney


From raims at dot.com  Sat Oct 27 20:37:01 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sun, 28 Oct 2007 02:37:01 +0200
Subject: A lib to build query string...
References: <mailman.507.1193494511.13605.python-list@python.org>
Message-ID: <1i6o9uy.b021j815ll3zxN%raims@dot.com>

durumdara at gmail.com <durumdara at gmail.com> wrote:
> Is anybody knows about a function that can build query string from 
> parameter list? I very need that!

urllib.urlencode?
<http://docs.python.org/lib/module-urllib.html#l2h-3888>

 

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From chris.monsanto at gmail.com  Sun Oct 21 19:49:13 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Sun, 21 Oct 2007 16:49:13 -0700
Subject: Problem with regexp and text injection
In-Reply-To: <1193005376.777299.154860@z24g2000prh.googlegroups.com>
References: <1193005376.777299.154860@z24g2000prh.googlegroups.com>
Message-ID: <1193010553.039899.318990@q3g2000prf.googlegroups.com>

On Oct 21, 6:22 pm, Panagiotis Atmatzidis <p.atmatzi... at gmail.com>
wrote:
> Hello,
>
> I want to create a script in python that search for .html files in the
> predefined directory and subdirectories. Then it checks if a specific
> snippet of code exists in the .html file, if not it injects/adds the
> code right below the string <body> otherwise bypasses the file.
>
> I wrote the first part, I managed to write search function and I'm
> trying to find my way out of regular expressions reading the manuals.
> However I don't know what kind of function and module to use in order
> to write this function, re.search(), re.string() or re.match() or
> maybe re.compile() ?
>
> I have not much programming experience. Programming is not my cup of
> tea.
>
> Can someone help by pointing me to a sample code with comments if
> possible.
>
> Regards,
>
> atma

import glob
glob.glob("*.html") # returns a list of all filenames you are looking
for

---------

import re
m = re.search(regular_expression_testing_for_string_of_code,
string_with_contents_of_page) # checks if your snippet is there
if m is None:
    new_contents = re.sub(r"(?xis) <body .*?>", lambda m: m.group() +
your_snippet_of_code, string_with_contents_of_page) # Add the snippet
to the body. I use a function as the replacement in case your snippet
has backreferences in it for some reason. If it doesn't, feel free to
use r"\0" + snippet_of_code.




From theller at ctypes.org  Fri Oct  5 07:54:09 2007
From: theller at ctypes.org (Thomas Heller)
Date: Fri, 05 Oct 2007 13:54:09 +0200
Subject: Where's the Starship's crew?
In-Reply-To: <20071005083806.61D811E4002@bag.python.org>
References: <20071005083806.61D811E4002@bag.python.org>
Message-ID: <fe58l1$4te$1@sea.gmane.org>

Dick Moores schrieb:
> <http://starship.python.net/crew/index.html>
> 
> I didn't check on all of them, but the only one I found was Mark 
> Hammond <http://starship.python.net/crew/mhammond/>.
> 
> Dick Moores
> 

There are more.  Think of it as a game you have to solve.



From bj_666 at gmx.net  Thu Oct 11 09:46:12 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 13:46:12 GMT
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
Message-ID: <5n6np4Fghr61U6@mid.uni-berlin.de>

On Thu, 11 Oct 2007 13:04:53 +0000, Artur Siekielski wrote:

> On Oct 11, 2:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>> But why?  Default getters and setters are unnecessary and if you need
>> something other than the default you need to write it anyway more
>> explicitly.
> 
> I see some problems with your approach:
> 
> 1. If I use instance field 'name' which is accessed directly by other
> classes,
> and later I decide to implement nonstandard getter, I must refactor
> 'Person' class
> and in some places change 'name' to '_name' (assuming this is now the
> field's name).
> The problem is that I cannot automatically change 'name' to '_name'
> everywhere, because
> in some places I want public property value (eg. validated and
> formatted), and in other
> places raw property value.

So what?  Otherwise you carry *always* the baggage of a public property
and a private attribute whether you need this or not.  At least for me it
would be unnecessary in most cases.

> 2. Properties define (a part of) public interface of a class. When
> using fields for public
> access, you must tell this explicitly in documentation, or use name
> convention. And public
> fields definition is mixed with private fields, which doesn't happen
> when using properties.

Attributes are public unless you start the name with an underscore which is
by convention a warning to not use that attribute unless you know what you
are doing.  With properties all over the place you use that convention
anyway because the "real" value for `name` is bound as `_name`.  So you
clutter your API with two attributes for non-method-attributes.

And a property is not automatically part of the public API, just if the
name does not start with an underscore.

> 3. Using properties as first-class objects gives possibilities to use
> declarative approaches for constructing them.

No idea what you mean here.  Everything in Python is an object.

Ciao,
	Marc 'BlackJack' Rintsch


From Graham.Dumpleton at gmail.com  Thu Oct 18 19:16:26 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Thu, 18 Oct 2007 23:16:26 -0000
Subject: Is there a way to tell if a script has been run by Pythonw.exe
	instead of Python.exe?
In-Reply-To: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
References: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
Message-ID: <1192749386.683238.216390@t8g2000prg.googlegroups.com>

On Oct 19, 7:56 am, Metalone <j... at iteris.com> wrote:
> In particular I want to know how to tell if reading and writing to the
> console can occur.
> Something like
> sys.isConsolePresent()

Have you tried:

  sys.stdin.isatty()
  sys.stdout.isatty()

Graham



From martin at marcher.name  Mon Oct 29 05:56:45 2007
From: martin at marcher.name (Martin Marcher)
Date: Mon, 29 Oct 2007 10:56:45 +0100
Subject: sharing vars with different functions
In-Reply-To: <5fa6c12e0710290211j1eb4fef0n81d8b8be94500789@mail.gmail.com>
References: <1193648594.380143.153450@o38g2000hse.googlegroups.com>
	<5fa6c12e0710290211j1eb4fef0n81d8b8be94500789@mail.gmail.com>
Message-ID: <5fa6c12e0710290256ocae982bi97f94ca4a5cffe40@mail.gmail.com>

I hate gmail, always forgetting to set the right recipient...


---------- Forwarded message ----------
From: Martin Marcher <martin at marcher.name>
Date: 29.10.2007 10:11
Subject: Re: sharing vars with different functions
To: "scripteaze at gmail.com" <scripteaze at gmail.com>


2007/10/29, scripteaze at gmail.com <scripteaze at gmail.com>:
> Im tryin to call a var thats sitting in a function, example:
>
> i  guess im not graspng the whole global or local var topic..

does this help?

>>> class Foo(object):
...     somevar = ["a", "b"]
...     def __init__(self):
...             self.another_var = ["c", "d"]
...
>>> Foo.somevar
['a', 'b']
>>> f = Foo()
>>> f.somevar
['a', 'b']
>>> f.another_var
['c', 'd']
>>> Foo.somevar = "New Value"
>>> f.somevar
'New Value'
>>> Foo.another_var
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: type object 'Foo' has no attribute 'another_var'



--
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From martin at v.loewis.de  Sun Oct 21 13:06:25 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 21 Oct 2007 19:06:25 +0200
Subject: C++ version of the C Python API?
In-Reply-To: <mailman.230.1192833455.13605.python-list@python.org>
References: <mailman.230.1192833455.13605.python-list@python.org>
Message-ID: <471B8711.1020509@v.loewis.de>

> Is there a C++ version of the C Python API packaged with python 2.5?

Stargaming has already mentioned the fine points; the first answer is:
yes, the API packaged python 2.5 can be used with C++. It is a C++
version of the same API as it adds proper extern "C" declarations around
all prototypes, and it was specifically cleaned up (ten years ago)
to work with C++.

This API does not make use of many of the C++ features, including
classes, templates, or overloading.

Regards,
Martin


From Frank.Aune at broadpark.no  Fri Oct 19 07:01:30 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Fri, 19 Oct 2007 13:01:30 +0200
Subject: ConfigParser preserving file ordering
In-Reply-To: <ff921p$116$1@ger.gmane.org>
References: <200710190123.39177.Frank.Aune@broadpark.no>
	<ff921p$116$1@ger.gmane.org>
Message-ID: <200710191301.30573.Frank.Aune@broadpark.no>

On Friday 19 October 2007 03:42:16 Joshua J. Kugler wrote:
>
> Have you taken a look at ConfigObj?
>
> http://www.voidspace.org.uk/python/configobj.html
>

Yes, but as I said I need functionality present in the standard-library, so 
sub-classing ConfigParser is the last option really. I was hoping preserve 
ordering for ConfigParser would find its way into a release soon.

-Frank


From edreamleo at charter.net  Tue Oct 23 12:10:29 2007
From: edreamleo at charter.net (Edward K Ream)
Date: Tue, 23 Oct 2007 11:10:29 -0500
Subject: Leo 4.4.4 beta 3 released
Message-ID: <c4pTi.14$vw6.1@newsfe02.lga>

Leo 4.4.4 beta 3 is available at:
http://sourceforge.net/project/showfiles.php?group_id=3458&package_id=29106

Leo 4.4.4 contains many important features originally planned for later 
releases.
It's been a good month :-)

Leo is a text editor, data organizer, project manager and much more. See:
http://webpages.charter.net/edreamleo/intro.html

The highlights of Leo 4.4.4:
----------------------------

- The Great Graph Aha (tm): simple scripts allow Leo outlines to represent
  arbitrary directed graphs. There is no need for a separate 'graph world'. 
The
  graphed.py plugin is a direct result of this Aha. The graphed.py plugin 
allows
  you to create general graphs from Leo outlines.

- @menus trees in settings files create all of Leo's menus.  It is now dead
  easy to make Leo's menus look the way you want.

- @buttons trees in settings files create common @button nodes created in 
all
  Leo outlines.

- @auto nodes eliminate sentinels in derived files, thereby allowing people 
to
  collaborate using Leo more easily.

- New commands for resolving cvs conflicts.

- A threading_colorizer plugin replaces the __jEdit_colorizer__ plugin.
  This plugin features much better performance and a new, elegant algorithm.

- Leo is now compatible with jython.

- The usual assortment of bug fixes and other minor improvements.

Links:
------
Leo:      http://webpages.charter.net/edreamleo/front.html
Home:     http://sourceforge.net/projects/leo/
Download: http://sourceforge.net/project/showfiles.php?group_id=3458
CVS:      http://leo.tigris.org/source/browse/leo/
Quotes:   http://webpages.charter.net/edreamleo/testimonials.html

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at yahoo.com
Leo: http://webpages.charter.net/edreamleo/front.html
-------------------------------------------------------------------- 




From jzgoda at o2.usun.pl  Mon Oct 22 06:46:03 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Mon, 22 Oct 2007 12:46:03 +0200
Subject: calling a function from string
In-Reply-To: <mailman.314.1193048742.13605.python-list@python.org>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
	<mailman.314.1193048742.13605.python-list@python.org>
Message-ID: <ffhvbm$10s$1@nemesis.news.tpi.pl>

Trent Nelson napisa?(a):
>> i have a function that I could like to call, but to make it more
>> dynamic I am constructing a string first that could equivalent to the
>> name of the function I wish to call. how could I do that? the string
>> could might include name of the module.
>>
>> for example
>>
>> a_string = 'datetime.' + 'today()'
>>
>> how could I call a_string as function?
> 
> Use 'eval' in one of the following fashions:
> 
> a_string_1 = 'datetime.' + 'today'
> a_string_2 = 'datetime.' + 'today()'
> 
> eval(a_string_1)()
> eval(a_string_2)

Do not use eval(). Not only it's deprecated, it's also unsafe.

-- 
Jarek Zgoda
Skype: jzgoda | GTalk: zgoda at jabber.aster.pl | voice: +48228430101

"We read Knuth so you don't have to." (Tim Peters)


From grante at visi.com  Fri Oct 12 16:48:51 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 20:48:51 -0000
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
	<feom4s$l0h$1@solaris.cc.vt.edu>
Message-ID: <13gvndj3ebgfh98@corp.supernews.com>

On 2007-10-12, brad <byte8bits at gmail.com> wrote:
> Florian Lindner wrote:
>> Hello,
>> is there a function in the Python stdlib to test if a string is a valid
>> email address?
>
> Nope, most any string with an @ in it could be a valid email addy. Send 
> a message to the addy, if it doesn't bounce, then it's valid.

Just because it doesn't bounce, that doesn't mean it's "valid".
Some servers don't bounce e-mail to invalid addresses, they
just drop them into the bit bucket in an effort to prevent
spammers from harvesting valid e-mail addresses using
dictionary attacks.

If you send an e-mail to an address and you get a response,
then it's valid.

-- 
Grant Edwards                   grante             Yow! BARRY ... That was
                                  at               the most HEART-WARMING
                               visi.com            rendition of "I DID IT MY
                                                   WAY" I've ever heard!!


From adurdin at gmail.com  Thu Oct 18 08:47:31 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Thu, 18 Oct 2007 13:47:31 +0100
Subject: Inheriting automatic attributes initializer considered harmful?
In-Reply-To: <1i64bxc.7f41mi1tsdr45N%aleax@mac.com>
References: <ff4rc5$ill$1@newsreader2.netcologne.de>
	<mailman.121.1192626814.13605.python-list@python.org>
	<1i64bxc.7f41mi1tsdr45N%aleax@mac.com>
Message-ID: <59e9fd3a0710180547y47319f43n6cae0bede5f58a66@mail.gmail.com>

On 10/17/07, Alex Martelli <aleax at mac.com> wrote:
>
> fake_str is not called, because special-method lookup occurs on the
> TYPE, *NOT* on the instance.

So it does; I'd forgotten that.  I need to remember to actually check
that the code does what I think it does before posting it on c.l.p
:-|

Andrew


From nachogomez at gmail.com  Tue Oct 23 10:35:07 2007
From: nachogomez at gmail.com (=?UTF-8?Q?Ra=C3=BAl_G=C3=B3mez_C.?=)
Date: Tue, 23 Oct 2007 10:35:07 -0400
Subject: Bidirectional communication over unix socket (named pipe)
In-Reply-To: <684b0a740710172159v4da8cc4fi813c53d3bfd7ee1@mail.gmail.com>
References: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>
	<684b0a740710171420k72c27080mb5402d37d5a81a9c@mail.gmail.com>
	<op.t0dlg5nmx6zn5v@gabriel2.softlabbsas.com.ar>
	<684b0a740710172143o4ddd60fn15da73991f76130c@mail.gmail.com>
	<684b0a740710172159v4da8cc4fi813c53d3bfd7ee1@mail.gmail.com>
Message-ID: <684b0a740710230735w25fc3d1o94592fe8d2be2d60@mail.gmail.com>

Hi list,

I've been looking around and I found a very interesting solution to this
problem, but instead of using a file for communication the author (Eduardo
Fleury) uses a reference to the abstract namespace, chek it out...

http://blog.eduardofleury.com/archives/2007/09/13/

Raul
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/0f75eca7/attachment.html>

From bj_666 at gmx.net  Tue Oct 30 03:58:38 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 30 Oct 2007 07:58:38 GMT
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.607.1193694615.13605.python-list@python.org>
	<1193712614.592262.114790@e34g2000pro.googlegroups.com>
Message-ID: <5oo6heFliu6sU2@mid.uni-berlin.de>

On Mon, 29 Oct 2007 19:50:14 -0700, George Sakkis wrote:

> On Oct 29, 5:49 pm, "Terry Reedy" <tjre... at udel.edu> wrote:
> 
>> | why not a_string.len()?
>>
>> You are free to bypass builtins and call methods directly if you like:
>> a_string.__len__().
>>
>> But consider rewriting the following:
>>
>> def table(func, seq):
>>     return zip(seq, map(func,seq))
>>
>> table(len, ('', (), []))
> 
> table(lambda x:x.__len__(), ('',[],()))
> 
> What was the point again ?

Beautiful is better than ugly!? ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From robert.kern at gmail.com  Sun Oct 28 19:47:55 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 28 Oct 2007 18:47:55 -0500
Subject: Pari Python
In-Reply-To: <c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>	<fg2o3n$q62$1@ger.gmane.org>
	<c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
Message-ID: <fg373c$3pi$1@ger.gmane.org>

Anton Mellit wrote:
>> Have you looked at SAGE at all? They already have wrappers for Pari.
> 
> Well :) I expected that question. I tried. But the distribution for
> windows is so big :( (2GB) and I could not build it on cygwin, where
> it is also pretty big. And I so much like pari - it is so light and
> simple and still can do almost everything. So my idea is to make
> simple module for python so that you don't need to install 2GB program
> with 2000 functions where it is difficult to find the one you need,
> but just type 'import pari', and then help(pari), and then find a
> function like 'ellinit' and create an elliptic curve, or type some
> polynomial and factor, or expand some function into power series, or
> integrate numerically...
> 
> I heard from some people that SAGE is good but i somehow don't
> appreciate the approach.
> 
>> I don't recommend continuing to modify core parts of Python just for your
>> module. It means that you will break other Python modules. If you can't use
>> other Python modules with your module, what's the point of using Python at all?
> 
> Of course you don't have to replace ** with ^ or making that hack with
> division. The module would work with or without these changes. But I
> think every mathematician agrees that x**2 is really ugly.

So? There is no reason to make alterations to the core to achieve what you want.
You just need to parse your almost-Python code yourself before executing it.
That's what SAGE does. You really should take a closer look at it. It is
possible to take just part of SAGE and not install the whole thing.

-- 
Robert Kern

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



From trekker182 at comcast.net  Mon Oct 22 18:17:56 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Mon, 22 Oct 2007 18:17:56 -0400
Subject: for loop
Message-ID: <471D2194.7030607@comcast.net>

    #Intro
    print "*********************************************"
    print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
    print "*********************************************"

    print "This program will predict the size of a population of organisms."
    print
    print
    organisms=input("Please enter the starting number of organisms: ")

    increase=input("Please enter the average daily population increase 
as a percentage (20% = .20): ")

    days=input("Please enter the number of days that they will multiply: ")
    
print "         Day                                    Population"
print "----------------------------------------------------------"


for p in range (days):

    population = organisms * population * increase

    print days,

    print "\t\t\t\t",population

I'm having problems with my for loop here to calculate estimated 
population output to a table.  Instead of knowing how much I want to 
loop it, the loop index is going to be whatever number of days the user 
enters.  When I run my program, it asks the 3 questions above but then 
just dead stops at a prompt which leads me to believe there's something 
wrong with my loop.  I have the exact same setup in another program, but 
the loop index has a specific value.  I tried (0,days), (1,days) ect. 
and I don't think for loops need accumulators, I've tried it with one 
anyways and it still stops. 

Any idea's?

thx


From deets at nospam.web.de  Thu Oct 25 02:44:20 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 25 Oct 2007 08:44:20 +0200
Subject: about functions question
In-Reply-To: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
Message-ID: <5oasakFm35phU1@mid.uni-berlin.de>

NoName schrieb:
> I try it:
> 
> def b():
>   ...
>   a()
>   ...
> 
> def a():
>   ...
>   b()
>   ...
> 
> b()
> it's not work.

It works.


def a():
     print "a"
     b()


def b():
     print "b"
     print a   # not calling!


b()

But if you really call a in b, you create an endless loop. In all 
programming languages, btw.


> Is it possible pre-define function like in c++

No.
> or place functions code
> after main block?

Yes.


From russandheather at gmail.com  Wed Oct  3 10:32:41 2007
From: russandheather at gmail.com (Russell Warren)
Date: Wed, 03 Oct 2007 14:32:41 -0000
Subject: logging module and trailing newlines
In-Reply-To: <fdvfho$hg7$03$1@news.t-online.com>
References: <1191362837.501929.127520@22g2000hsm.googlegroups.com>
	<fdvfho$hg7$03$1@news.t-online.com>
Message-ID: <1191421961.911729.101520@w3g2000hsg.googlegroups.com>

Both are very good responses... thanks!  I had forgotten the ease of
"monkey-patching" in python and the Stream class is certainly cleaner
than the way I had been doing it.

On Oct 3, 3:15 am, Peter Otten <__pete... at web.de> wrote:
> Russell Warren wrote:
> > All I'm after is the ability to log things like...
>
> > Compiling 'shrubbery.c'...      [DONE]
>
> > where the "[DONE]" was added later in time than the "Compiling...", and
> > the output goes to both stdout and to a log file.  ie: I want to tee my
> > print statements and keep the ability to skip the trailing newline.  I had
> > rolled my own primitive version than decided to try the logging module for
> > kicks.
>
> > Anyone have a suggestion on how to get logging to work like this?  Or know
> > of a way to tee in Windows without forcing other users to install a tee
> > package?
>
> (1) Logging
>
> If you are too lazy to subclass you can monkey-patch:
>
> >>> import logging
> >>> def emit(self, record):
>
> ...     msg = self.format(record)
> ...     fs = "%s" if getattr(record, "continued", False) else "%s\n"
> ...     self.stream.write(fs % msg)
> ...     self.flush()
> ...>>> logging.StreamHandler.emit = emit
> >>> continued = dict(continued=True)
> >>> logging.error("Compiling... ", extra=continued); logging.error("[Done]")
>
> ERROR:root:Compiling... ERROR:root:[Done]
>
> (2) Teeing
>
> "Primitive", but should work:
>
> >>> class Stream(object):
>
> ...     def __init__(self, *streams):
> ...             self.streams = streams
> ...     def write(self, s):
> ...             for stream in self.streams:
> ...                     stream.write(s)
> ...     def flush(self):
> ...             for stream in self.streams:
> ...                     stream.flush()
> ...>>> import sys
> >>> stream = Stream(sys.stdout, sys.stderr)
> >>> print >> stream, "Compiling...",
>
> Compiling...Compiling...>>>
>
> I'd probably go with the latter.
>
> Peter




From thomas.weholt at gmail.com  Tue Oct  9 08:22:29 2007
From: thomas.weholt at gmail.com (Thomas W)
Date: Tue, 09 Oct 2007 12:22:29 -0000
Subject: Virtual filesystem in python ( Fuse or WebDav ? )
Message-ID: <1191932549.616430.285240@22g2000hsm.googlegroups.com>

I want to create a virtual filesystem based on a relational database.
It might run as a server on a different machine, but  it has to be
available like a normal filesystem, either shared using SAMBA or
windows filesharing or thru something else like WebDav.

The idea is that I scan a local filesystem and then create relations
between those files stored in a relational database, eg. a create a
group called family, add a bunch of files related to my family in that
virtual group/folder. When the user accesses the virtual filesystem
and types ls or dir the result is a list of groups, in my case ., ..
and family. The user types "cd family" and dir/ls in that virtual
folder will show all files in that group. How can this be done? I've
looked at dav, especially mod_dav and fuse. I want to be able to
access the files ( and even add files, like if I copy a file into the
family-folder, a relation in the relational database will be created,
but the newly added file itself might be stored some other place on
the filesystem, based on extension or perhaps EXIF-info if it's an
image being added ) using standard filesystem tools, like explorer on
win32 or the shell on linux.

I don't think I can use WebDav directly, because I want to control
what happens if somebody copies a file into a virtual folder, but I
don't know much about webdav so I might be wrong.

Any hint or clue would be appreciated.



From lasses_weil at klapptsowieso.net  Wed Oct  3 16:21:48 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Wed, 03 Oct 2007 22:21:48 +0200
Subject: Class design question
In-Reply-To: <mailman.1479.1191440320.2658.python-list@python.org>
References: <mailman.1470.1191434194.2658.python-list@python.org>	<1191436021.775375.324010@r29g2000hsg.googlegroups.com>	<1191437225.918592.193010@o80g2000hse.googlegroups.com>
	<mailman.1479.1191440320.2658.python-list@python.org>
Message-ID: <4703f9dc$0$30375$9b4e6d93@newsspool4.arcor-online.net>

Adam Lanier wrote:
>> class Foo(object):
>>     def __init__(self, *args):
>>         self.params = [arg if isinstance(arg, Bar) else Bar(arg) for
>> arg in args]
>>
> 
> Interesting, I'm not familiar with this idiom...
> 
> 
These are two idioms actually:

1. a "list comprehension":
    >>> newlist = [return_something(item) for item in some_iterable]

2. where return_something(item) is a "conditional assignment":
    >>> result = a if condition_is_true else b

/W


From facundobatista at gmail.com  Tue Oct 23 16:44:27 2007
From: facundobatista at gmail.com (Facundo Batista)
Date: Tue, 23 Oct 2007 17:44:27 -0300
Subject: Python tickets summary
In-Reply-To: <e04bdf310709131208v307bb273gd47a48779b4db61b@mail.gmail.com>
References: <e04bdf310709101325o1315adb0pebcb2f33d8313f35@mail.gmail.com>
	<e04bdf310709131208v307bb273gd47a48779b4db61b@mail.gmail.com>
Message-ID: <e04bdf310710231344j166934ffy6b9194ef6f2e5c41@mail.gmail.com>

2007/9/13, Facundo Batista <facundobatista at gmail.com>:

> All the listings are accesible from the same pages, start here:
>
>   http://www.taniquetil.com.ar/facundo/py_tickets.html
>
> (remember to refresh)
>
> Any idea to improve these pages is welcomed.

Following an idea of John Lenton, now every page shows a graph of the
activity per day of all open tickets.

Look at the bottom:

  http://www.taniquetil.com.ar/facundo/py_tickets.html

Regards,

-- 
.    Facundo

Blog: http://www.taniquetil.com.ar/plog/
PyAr: http://www.python.org/ar/


From bj_666 at gmx.net  Thu Oct 18 11:51:24 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 18 Oct 2007 15:51:24 GMT
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
Message-ID: <5npdnsFj14e6U3@mid.uni-berlin.de>

On Thu, 18 Oct 2007 08:41:30 -0700, Abandoned wrote:

> import cPickle as pickle
> a="{2:3,4:6,2:7}"
> s=pickle.dumps(a, -1)
> g=pickle.loads(s);
> print g
> '{2:3,4:6,2:7}'
> 
> Thank you very much for your answer but result is a string ??

In Python terms yes, strings in Python can contain any byte value.  If you
want to put this into a database you need a BLOB column or encode it as
base64 or something similar more ASCII safe.

Ciao,
	Marc 'BlackJack' Rintsch


From robert.kern at gmail.com  Wed Oct 17 20:27:08 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 17 Oct 2007 19:27:08 -0500
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192664785.093927.305050@q5g2000prf.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>	<mailman.137.1192653677.13605.python-list@python.org>	<1192655036.279184.255720@q3g2000prf.googlegroups.com>	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
	<1192664785.093927.305050@q5g2000prf.googlegroups.com>
Message-ID: <ff6991$ela$1@ger.gmane.org>

Debajit Adhikary wrote:
> On Oct 17, 5:40 pm, Paul Hankin <paul.han... at gmail.com> wrote:
>> To answer your question though: a += b is *not* the same as a = a + b.
>> The latter would create a new list and assign it to a, whereas a += b
>> updates a in-place.
> 
> I know I'm being a little finicky here, but how would someone know
> that a+=b is not the same as a=a+b?
> Any documentation or reference that mentions this?

http://docs.python.org/ref/augassign.html

-- 
Robert Kern

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



From schmidt_florian at gmx.de  Thu Oct  4 14:04:32 2007
From: schmidt_florian at gmx.de (Florian Schmidt)
Date: Thu, 4 Oct 2007 20:04:32 +0200
Subject: Import PY file not included in py2exe executable
In-Reply-To: <1191518159.408503.258070@19g2000hsx.googlegroups.com>
References: <1191518159.408503.258070@19g2000hsx.googlegroups.com>
Message-ID: <20071004180432.GA1709@mail.gmx.de>

On Thu, Oct 04, 2007 at 10:15:59AM -0700, ward.david at comcast.net wrote:
> ... because they are used for program configuration ...

not sure if i completely understood but i guess you do something like
that:

my_config.py:
    db_host = "mydbserver"
    db_user = "root"
    ...

and in your program.py you have:
    import my_config
    ...
    DB.Connect(my_config.db_host, my_config.db_user...)

and your problem is that py2exe will package that my_config.py so that
"noone" can change it afterwards...

one possibility i often use is execfile:
same my_config as above, but:
program.py:
    class config_class:
          pass
    my_config = config_class()
    my_config.db_host = "localhost" # default config...

    def read_config():
        execfile("my_config.py", globals(), my_config.__dict__)
    ...
    DB.Connect(my_config.db_host, my_config.db_user...)      

so you can always call read_config() to re-read the configuration and have
all python features in that config file. (additionally you can catch
exceptions and check the config files' mtime if it has changed...)

that way py2exe won't care about your config file...

hope it helps...

-- 

Florian Schmidt


From bdesth.quelquechose at free.quelquepart.fr  Fri Oct  5 12:47:35 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 05 Oct 2007 18:47:35 +0200
Subject: weakrefs and bound methods
In-Reply-To: <4708f45d$0$11868$3b214f66@tunews.univie.ac.at>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<4708f45d$0$11868$3b214f66@tunews.univie.ac.at>
Message-ID: <470a818a$0$14499$426a74cc@news.free.fr>

Mathias Panzenboeck a ?crit :

About the lost weakref problem: in Python, methods are just tiny 
wrappers around the object, class and function created at lookup time 
(yes, on *each* lookup) (and WWAI, they are by the function object 
itself, which implements the descriptor protocol).

> When I change the class Wrapper to following, the class Foo works:
> 
> class Wrapper(object):
> 	def __init__(self,x):
> 		self.func_name = x.func_name
> 		self.x         = weakref.ref(x.im_self)

> 	def __call__(self,*args,**kwargs):
> 		x = self.x()
> 		if x is None:
> 			print "lost reference"
> 		else:
> 			return getattr(x,self.func_name)(*args,**kwargs)

Anyway, the whole thing looks quite baroque to me - and I'm known for my 
immoderate appetite for brain-melting features....

If I understand correctly, you're doing all this to avoid circular 
references while keeping track of a list of methods to call ?

If yes, then you're thru much pain for nothing. Mostly because there are 
  other much more simpler solutions. The first one is obviously to use 
names and getattr. In it's most na?ve implementation, this would look like:

class Foo(object):
     def __init__(self):
	self._methods = set()
	self._methods.add('_foo')

     def _foo(self):
	print "_foo"

     def callMethods(self):
	 for name in self._methods:
              meth = getattr(self, name, None)
              if callable(meth):
                  meth()




Now if _methods is supposed to have the same content class-wise (which 
is the case in your exemple), no need to have it as an instance method:

class Foo(object):
     _methods = set('_foo')

     def _foo(self):
	print "_foo"

     def callMethods(self):
	 for name in self._methods:
              meth = getattr(self, name, None)
              if callable(meth):
                  meth()

We could go further, like using a decorator to mark methods to add to 
_methods, and a metaclass to set the whole thing up, but this would 
probably be overkill. Unless there are other requirements, I'd 
personnaly stop here.

Oh, and yes, while we're at it : Python usually knows how to deal with 
circular references....

> But that's ugly. 

Indeed.

> Any better idea?

Yes. KISS.


From stef.mientki at gmail.com  Sat Oct 20 06:21:57 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sat, 20 Oct 2007 12:21:57 +0200
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <13hj34cgdvkdc80@corp.supernews.com>
References: <mailman.201.1192778546.13605.python-list@python.org>	<1192779222.618164.321910@y27g2000pre.googlegroups.com>	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>	<13hhicd14jrt5e3@corp.supernews.com>	<mailman.220.1192811880.13605.python-list@python.org>
	<13hj34cgdvkdc80@corp.supernews.com>
Message-ID: <4719D6C5.7020603@gmail.com>

Steven D'Aprano wrote:
> On Fri, 19 Oct 2007 18:38:06 +0200, stef mientki wrote:
>
>   
>> I don't have pointers, I've just names (at least I think). Let me
>> explain a little bit more,
>> I want to simulate / debug a user program, the user program might look
>> like this:
>>
>>    x = 5
>>    for i in xrange(10):
>>        x = x + 1
>>     
>
>
> I thought you were writing a JAL interpreter:
>
> http://en.wikipedia.org/wiki/JAL_(compiler)
>
>   
hi Steven, you're completely right,
in fact I want to some more: also taken hardware and physics into account.
You can see one of my first demo's here, to see what I mean:
   http://stef.mientki.googlepages.com/jalspy_demo_robot1a.html
and some more demos can be found over here:
   
http://oase.uci.kun.nl/~mientki/data_www/pic/jalspy/jalspy_animated_demos.html
In fact we already used the simulator a number of times in real 
applications with great success,
but didn't release it yet, because you still need Python knowledge to 
run it reliable.
> but the code above is Python.
>   
Yes, right again ;-)
The simulator translates JAL into Python,
In the beginning I thought that was the easiest,
I'm not sure about that anymore at the moment,
but on the other hand that's just replacing one module.
> Python already has a debugger. Try this:
>
> import pdb
> help(pdb)
>
>   
Yes, Paul also pointed me into that direction,
and to be honest, I expected there would be such a module,
but I never searched for it, because ....
If I see that I can cook dinner,
when I (very seldom) test the program  (I'm writing) in the debug mode,
(assuming the IDE uses the same pdb),
then this is far too slow :-(

I'll report back what my experiences are with pdb.

cheers,
Stef Mientki





From python at rcn.com  Thu Oct 25 20:37:31 2007
From: python at rcn.com (Raymond Hettinger)
Date: Thu, 25 Oct 2007 17:37:31 -0700
Subject: An efficient, pythonic way to calculate result sets
In-Reply-To: <1193358833.133666.253680@k35g2000prh.googlegroups.com>
References: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
	<1193358833.133666.253680@k35g2000prh.googlegroups.com>
Message-ID: <1193359051.336992.230920@v23g2000prn.googlegroups.com>

> Easy exercise of transforming recursion to iteration left to the
> reader.

Ack!  That part was already done.


Raymond




From kf9150 at gmail.com  Thu Oct  4 14:33:22 2007
From: kf9150 at gmail.com (Kelie)
Date: Thu, 04 Oct 2007 11:33:22 -0700
Subject: using regular express to analyze lisp code
In-Reply-To: <mailman.1518.1191519946.2658.python-list@python.org>
References: <1191518039.676797.290620@22g2000hsm.googlegroups.com>
	<mailman.1518.1191519946.2658.python-list@python.org>
Message-ID: <1191522802.565729.144530@n39g2000hsh.googlegroups.com>

On Oct 4, 7:50 am, Tim Chase <python.l... at tim.thechases.com> wrote:
> Use a parsing lib.  I've tinkered a bit with PyParsing[1] which
> is fairly easy to pick up, but powerful enough that you're not
> banging your head against limitations.  There are a number of
> other parsing libraries[2] with various domain-specific features
> and audiences, but I'd go browsing through them only if PyParsing
> doesn't fill the bill.
>
> As you don't detail what you want to do with the content or how
> pathological the input can be, but you might be able to get away
> with just skimming through the input and counting open-parens and
> close-parens, stopping when they've been balanced, skipping lines
> with comments.

thanks Tim. following you and Dan's advice i visited
http://python.fyxm.net/topics/parsing.html and i picked up pyparsing
after brief reading of descriptions for couple of packages. now that
you recommended it, seems that i made a good choice.

btw, the content found will be copied to a new text file.






From deets at nospam.web.de  Mon Oct 15 11:28:31 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 15 Oct 2007 17:28:31 +0200
Subject: A Python way to get MS Access table column information?
References: <1192461377.629580.287370@i38g2000prf.googlegroups.com>
Message-ID: <5nhf8vFi1p52U1@mid.uni-berlin.de>

goldtech wrote:

> Using Python and OBDC in MS-Access DBs. So, I'm able to run SQL
> statements from Python on an Access DB.
> 
> Is there an SQL statement that will give me column information? For a
> table I want to know the data type and of course colum/Attribute name
> for each column.
> 
> So far the answer has been "no". VB or some other tool is needed to do
> that I'm told.

Who said that? Did you check the cursor objects description-property, as
described in 

http://www.python.org/dev/peps/pep-0249/

That at least for other DBs gives the needed info, and it seems it's
required.

Diez


From deets at nospam.web.de  Wed Oct 10 18:22:55 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 00:22:55 +0200
Subject: PYTHONPATH on OS X
In-Reply-To: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
References: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
Message-ID: <5n51m2Fg7ceoU2@mid.uni-berlin.de>

mhearne808[insert-at-sign-here]gmail[insert-dot-here]com schrieb:
> I'm missing something major here.  I'm trying to add a directory to my
> python path using the PYTHONPATH environment variable, and it's being
> ignored by the Python interactive shell.
> 
> Below is a capture of what I did.  Note that my newfolder appears
> nowhere on the list of directories in sys.path.  How do I get Python
> to pay attention to my shell variables?
> 
> Using bash on OS X 10.4.10.
> 
> %:~ user$ echo $PYTHONPATH
> 
> %:~ user$ PYTHONPATH=/Users/user/newfolder
> %:~ user$ echo $PYTHONPATH
> /Users/user/newfolder
> %:~ user$ python
> Python 2.5.1 (r251:54863, Aug 10 2007, 10:46:58)
> [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import sys
>>>> sys.path
> ['', '/usr/local/lib/python2.5/site-packages/
> setuptools-0.7a1dev_r56320-py2.5.egg', '/usr/local/lib/python2.5/site-
> packages/ipython1-0.9alpha2-py2.5.egg', '/usr/local/lib/python2.5/site-
> packages/SQLAlchemy-0.4.0beta5-py2.5.egg', '/usr/local/lib/python2.5/
> site-packages/MySQL_python-1.2.2-py2.5-macosx-10.3-i386.egg', '/usr/
> local/lib/python25.zip', '/usr/local/lib/python2.5', '/usr/local/lib/
> python2.5/plat-darwin', '/usr/local/lib/python2.5/plat-mac', '/usr/
> local/lib/python2.5/plat-mac/lib-scriptpackages', '/usr/local/lib/
> python2.5/lib-tk', '/usr/local/lib/python2.5/lib-dynload', '/usr/local/
> lib/python2.5/site-packages', '/usr/local/lib/python2.5/site-packages/
> PIL']

Use

export PYTHONPATH=....

to pass environment vars to subprocesses.

Basic unix shell knowledge :)

$ man bash
...
   export -p
               The  supplied names are marked for automatic export to 
the envi-
               ronment of subsequently executed commands.  If the -f 
option  is
               given,  the names refer to functions.  If no names are 
given, or
               if the -p option is supplied, a  list  of  all  names 
that  are
               exported  in  this  shell  is printed.  The -n option 
causes the
               export property to be removed from the named variables. 
  export
               returns  an exit status of 0 unless an invalid option is 
encoun-
               tered, one of the names is not a valid shell variable 
name,  or
               -f is supplied with a name that is not a function.

...


Diez


From e0427417 at student.tuwien.ac.at  Sun Oct  7 10:59:40 2007
From: e0427417 at student.tuwien.ac.at (Mathias Panzenboeck)
Date: Sun, 07 Oct 2007 16:59:40 +0200
Subject: weakrefs and bound methods
In-Reply-To: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
Message-ID: <4708f45d$0$11868$3b214f66@tunews.univie.ac.at>

When I change the class Wrapper to following, the class Foo works:

class Wrapper(object):
	def __init__(self,x):
		self.func_name = x.func_name
		self.x         = weakref.ref(x.im_self)

	def __call__(self,*args,**kwargs):
		x = self.x()
		if x is None:
			print "lost reference"
		else:
			return getattr(x,self.func_name)(*args,**kwargs)


But that's ugly. Any better idea?


From Florian.Lindner at xgm.de  Fri Oct 12 06:58:28 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 12:58:28 +0200
Subject: Last iteration?
Message-ID: <fenk0r$5er$03$1@news.t-online.com>

Hello,
can I determine somehow if the iteration on a list of values is the last
iteration?

Example:

for i in [1, 2, 3]:
   if last_iteration:
      print i*i
   else:
      print i

that would print

1
2
9


Can this be acomplished somehow?

Thanks,

Florian


From paul at boddie.org.uk  Sat Oct 27 13:13:06 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Sat, 27 Oct 2007 10:13:06 -0700
Subject: multi-protocol url-based IO -- pure python kioslave-like module?
In-Reply-To: <1193502384.553887.30370@i38g2000prf.googlegroups.com>
References: <1193502384.553887.30370@i38g2000prf.googlegroups.com>
Message-ID: <1193505186.813473.108330@o80g2000hse.googlegroups.com>

On 27 Okt, 18:26, Rob McMullen <rob.mcmul... at gmail.com> wrote:
> Wheel reinvention preemption question: is there an existing pure-
> python library with functionality similar to KDE's kio/kioslave
> implementation?  A multi-protocol, extensible library based on URLs
> that abstracts directory listing and file read/write?  I'm looking to
> use it in client code, not server, so it doesn't have to be
> asynchronous like kio; ideally it would be small and only depend on
> the standard python library.

Something like itools.vfs, perhaps?

http://www.ikaaro.org/itools
http://download.ikaaro.org/doc/itools/Chapter--VFS.html

Paul



From surekap at gmail.com  Wed Oct 24 06:55:16 2007
From: surekap at gmail.com (Prateek)
Date: Wed, 24 Oct 2007 03:55:16 -0700
Subject: building a linux executable
Message-ID: <1193223316.020001.77940@i13g2000prf.googlegroups.com>

Hello,

I'm trying to package my python program into a linux executable using
cx_freeze. The goal is that the user should require python on their
system.

I've managed to make the binaries on Fedora Core 6 and they run fine.
However, when I move to Ubuntu (tested on Ubuntu Server 7.04 and
xUbuntu Desktop 7.04), the program fails to run with the following
error:

ImportError: no module named _md5

_md5 being imported by the hashlib module because the import of
_hashlib.so failed.

When I try to import the _hashlib module manually, I see that it
cannot find libssl.so.6 (The _hashlib module in the standard python
installation which came with Ubuntu works just fine). If I manually
copy the libssl.so.6 file from FC6 (its really a symlink pointing to
libssl.so.0.9.8b) to Ubuntu and make the symlink in /lib, it works
fine (the next error is related to libcrypto, libxslt and libjpeg (i'm
also using libxml, libxsl and PIL in my application).

I've scoured the net and it seems that _hashlib.so is dynamically
linked to libssl which is not being "integrated" into the build by
cx_Freeze. Similarly, there are other files with the same problem.

Does anyone have any idea how to make cx_Freeze make a linux
executable which is portable across *nix distros?

Thanks in advance,
-Prateek Sureka



From paul.hankin at gmail.com  Tue Oct  2 07:34:25 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Tue, 02 Oct 2007 11:34:25 -0000
Subject: problem with special built-in method __contains__,
In-Reply-To: <1191323678.609701.258550@y42g2000hsy.googlegroups.com>
References: <1191323678.609701.258550@y42g2000hsy.googlegroups.com>
Message-ID: <1191324865.979298.107430@d55g2000hsg.googlegroups.com>

On Oct 2, 12:14 pm, "ebo... at gmail.com" <ebo... at gmail.com> wrote:
> if i have a dictionary  name number ....and i want to    ask the list
> whether a particular key already
> exists.
>
> >>> print number
>
> {'octal': '1234567', 'binary': '10100101', 'decimal': '1234567890',
> 'hexadecimal': '1-9,a-f'}
>
>  i got  error..after execute
>
>  >>>number._contains_("test")

It's __contains__ and not _contains_. But better is just:
  'test' in number

--
Paul Hankin



From jcd at sdf.lonestar.org  Mon Oct 22 06:47:49 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Mon, 22 Oct 2007 06:47:49 -0400
Subject: Failure to connect in SimpleXMLRPCServer/xmlrpclib
In-Reply-To: <1193034835.803633.121600@z24g2000prh.googlegroups.com>
References: <1193034835.803633.121600@z24g2000prh.googlegroups.com>
Message-ID: <471C7FD5.3040104@sdf.lonestar.org>

iu2 wrote:
> Hi all,
>
> I've copied the example of RPC usage from the Python's doc.
> When the client and server were on the same PC ("localhost") (I use
> Windows)
> it worked ok. But putting the server on a different PC raised the
> error:
>
> gaierror: (11001, 'getaddrinfo failed')
> The error was raised upion accessing some function of the server,
> i.e.,
> print s.add_nums(1, 2, 3)  # server registered function
>
> PCs in our organization are accessed by "\\<name>" so I used
>
> s = xmlrpclib.Server(r'http://\\pc_name:8000')
> I got the same error when I put some non-existing name.
> Trying to remove the double-backslash from the PC's name raised the
> error:
> error: (10061, 'Connection refused')
>
> I'll appreciate your help on this.
>
> Thanks
> iu2
>
>   

Don't use the \\.  That's a windows networking convention, and it does
not apply if you are using http.  Your error messages tell you this. 
The first one (r'http://\\pc_name:8000') could not resolve the address. 
The second one reached the server just fine, but the server rejected the
client's request.  So now the issue is why is the request being
rejected?  Did you check your firewall to see if it is blocking access
to port 8000 on the ethernet adapter?

Cheers,
Cliff




From goldtech at worldpost.com  Fri Oct  5 08:16:14 2007
From: goldtech at worldpost.com (goldtech)
Date: Fri, 05 Oct 2007 05:16:14 -0700
Subject: tkinter question
In-Reply-To: <pan.2007.10.05.10.33.13.824163@vscht.cz>
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
	<pan.2007.10.05.10.33.13.824163@vscht.cz>
Message-ID: <1191586574.410311.142230@k79g2000hse.googlegroups.com>


>
> try to change listbox.pack() to listbox.pack(expand=True, fill=BOTH)
> .. is it that you want ?

Yes.

>
>  -mykhal

Worked with TRUE all uppercase.

Exactly what I needed. Thank you.



From tommy.nordgren at comhem.se  Mon Oct 22 18:21:49 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Tue, 23 Oct 2007 00:21:49 +0200
Subject: Check File Change Every 10 Seconds
In-Reply-To: <005001c814ba$3d09bca0$b71d35e0$@rawlins@thinkbluemedia.co.uk>
References: <27459.1491478079$1193048158@news.gmane.org>
	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
	<005001c814ba$3d09bca0$b71d35e0$@rawlins@thinkbluemedia.co.uk>
Message-ID: <70AF4D02-E15C-4EA5-AB68-5C0428DBBD51@comhem.se>


On 22 okt 2007, at 16.45, Robert Rawlins - Think Blue wrote:

> Thanks for your time Gabriel,
>
> That certainly looks to be the type of thing that I'm looking to  
> achieve, however, I forgot to mention I'm running this on a Linux  
> platform and not a Win32 one :-( Sorry.
>
> I'm sure similar things are achievable, I've used os.stat before  
> now to get the time stamp for when a file was last changed, if I  
> perhaps combine this with the while 1: inside a thread I can  
> achieve the same end result? Sound like a good idea?
>
> I just wasn?t sure how safe it was to spawn a thread like this  
> which contains an infinite loop.
>
> Thanks again for your time,
>
> Rob
>

	Don't use os.stat Use os.fstat instead on the open filedescriptor  
associated with your file.
If you use stat on a portable, and poll too often, your hard drive  
will never go to sleep when idle.
	fstat works on the cached, in memory, directory info of the file.
When it's changed, rewind the file and reparse.

> ------
What is a woman that you forsake her, and the hearth fire and the  
home acre,
to go with the old grey Widow Maker.  --Kipling, harp song of the  
Dane women
Tommy Nordgren
tommy.nordgren at comhem.se





From Eric_Dexter at msn.com  Tue Oct  9 07:18:27 2007
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: Tue, 09 Oct 2007 04:18:27 -0700
Subject: embedding error in python example
In-Reply-To: <1191928299.360986.304070@22g2000hsm.googlegroups.com>
References: <1191928299.360986.304070@22g2000hsm.googlegroups.com>
Message-ID: <1191928707.133203.227830@o3g2000hsb.googlegroups.com>

On Oct 9, 6:11 am, "Eric_Dex... at msn.com" <Eric_Dex... at msn.com> wrote:
> I compiled the comand line example and I am getting an error when I
> try to use the program when the program is cleaning up (I don't know
> that it would prevent the program from running though I will run more
> tests)...  ebedpython test testt
> result of call: -1
> exception exceptions.TypeError: 'an integer is required' in ' 'garbage
> collection' ignored
> Fatal Python error: unexpected exception during garbage collection...
>
> the program is just
> test.py
>
> def testt():
>  x = 'test'
>
> doesn't realy do anything it was my first test of the program..
>
> I would be thankfull for any help..
>
> tagline I don't need no stinken tagline...

def testt():
    v = open('file.txt','w')
    v.write('test')
    v.close()
 #x := 'test'
 #print x

This seems to work but gives me the annoying looking error..  I now
have a file with the word test in it...  This is done with xp, with
python 2.5 dll and the example that you find when you look up python +
embed in google..  I copied all the .dll's in the root (msvcrt exc)
and python25.dll to the directory..  any help would be apreaceated..



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 31 17:59:05 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 31 Oct 2007 21:59:05 -0000
Subject: A Python 3000 Question
References: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<mailman.653.1193760145.13605.python-list@python.org>
	<slrnfigtq9.1mk.horpner@FIAD06.norwich.edu>
	<Xns99DA8CAD0B7E2duncanbooth@127.0.0.1>
	<slrnfih3eo.1dc.horpner@FIAD06.norwich.edu>
	<Xns99DA9633528E5duncanbooth@127.0.0.1>
Message-ID: <13ihul9dsov4h8c@corp.supernews.com>

On Wed, 31 Oct 2007 14:45:59 +0000, Duncan Booth wrote:

>> Thanks for the interesting note. I didn't know that tuples originally
>> had no methods. That made len mandatory, I suppose.
>> 
> Only if you think tuples are a sequence rather than a record.

Even records have a length. The length of a record is the number of 
fields it has.

-- 
Steven.


From patrick.waldo at gmail.com  Mon Oct 15 06:43:19 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Mon, 15 Oct 2007 10:43:19 -0000
Subject: Simple Text Processing Help
In-Reply-To: <1192396632.736910.134070@q5g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
Message-ID: <1192444999.825194.268930@v23g2000prn.googlegroups.com>

>     lines = open('your_file.txt').readlines()[:4]
>     print lines
>     print map(len, lines)

gave me:
['\xef\xbb\xbf200-720-7        69-93-2\n', 'kyselina mo\xc4\x8dov
\xc3\xa1      C5H4N4O3\n', '\n', '200-001-8\t50-00-0\n']
[28, 32, 1, 18]

I think it means that I'm still at option 3.  I got the line by line
part.  My code is a lot cleaner now:

import codecs

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"
input = codecs.open(path, 'r','utf8')
output = codecs.open(path2, 'w', 'utf8')

for line in input:
    tokens = line.strip().split()
    tokens[2:-1] = [u' '.join(tokens[2:-1])]   #this doesn't seem to
combine the files correctly
    file = u'|'.join(tokens)                   #this does put '|' in
between
    print file + u'\n'
    output.write(file + u'\r\n')

input.close()
output.close()

my sample input file looks like this( not organized,as you see it):
200-720-7        69-93-2
kyselina mocov?      C5H4N4O3

200-001-8	50-00-0
formaldehyd      CH2O

200-002-3
50-01-1
guanid?nium-chlorid      CH5N3.ClH

etc...

and after the program I get:

200-720-7|69-93-2|
kyselina|mocov?||C5H4N4O3

200-001-8|50-00-0|
formaldehyd|CH2O|

200-002-3|
50-01-1|
guanid?nium-chlorid|CH5N3.ClH|

etc...
So, I am sort of back at the start again.

If I add:

tokens = line.strip().split()
for token in tokens:
    print token

I get all the single tokens, which I thought I could then put
together, except when I did:

for token in tokens:
     s = u'|'.join(token)
     print s

I got ?|2|0|0|-|7|2|0|-|7, etc...

How can I join these together into nice neat little lines?  When I try
to store the tokens in a list, the tokens double and I don't know
why.  I can work on getting the chemical names together after...baby
steps, or maybe I am just missing something obvious.  The first two
numbers will always be the same three digits-three digits-one digit
and then two digits-two digits-one digit.

My intuition tells me that I need to add an if statement that says, if
the first two numbers follow the pattern, then continue, if they don't
(ie a chemical name was accidently split apart) then the third entry
needs to be put together.  Something like
if tokens.startswith('pattern') == true


Again, thanks so much.  I've gone to http://gnosis.cx/TPiP/ and I have
a couple O'Reilly books, but they don't seem to have a straightforward
example for this kind of text manipulation.

Patrick


On Oct 14, 11:17 pm, John Machin <sjmac... at lexicon.net> wrote:
> On Oct 14, 11:48 pm, patrick.wa... at gmail.com wrote:
>
>
>
> > Hi all,
>
> > I started Python just a little while ago and I am stuck on something
> > that is really simple, but I just can't figure out.
>
> > Essentially I need to take a text document with some chemical
> > information in Czech and organize it into another text file.  The
> > information is always EINECS number, CAS, chemical name, and formula
> > in tables.  I need to organize them into lines with | in between.  So
> > it goes from:
>
> > 200-763-1                     71-73-8
> > n?trium-tiopent?l           C11H18N2O2S.Na           to:
>
> > 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
>
> > but if I have a chemical like: kyselina mo?ov?
>
> > I get:
> > 200-720-7|69-93-2|kyselina|mo?ov?
> > |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
>
> > and then it is all off.
>
> > How can I get Python to realize that a chemical name may have a space
> > in it?
>
> Your input file could be in one of THREE formats:
> (1) fields are separated by TAB characters (represented in Python by
> the escape sequence '\t', and equivalent to '\x09')
> (2) fields are fixed width and padded with spaces
> (3) fields are separated by a random number of whitespace characters
> (and can contain spaces).
>
> What makes you sure that you have format 3? You might like to try
> something like
>     lines = open('your_file.txt').readlines()[:4]
>     print lines
>     print map(len, lines)
> This will print a *precise* representation of what is in the first
> four lines, plus their lengths. Please show us the output.




From rbonvall at gmail.com  Wed Oct 31 16:50:48 2007
From: rbonvall at gmail.com (Roberto Bonvallet)
Date: Wed, 31 Oct 2007 20:50:48 -0000
Subject: 3 number and dot..
In-Reply-To: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <1193863848.080615.191090@v3g2000hsg.googlegroups.com>

On 31 oct, 16:58, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
>
> How can i do?

>>> x = 12332321
>>> '.'.join(''.join(i for n, i in g) for k, g in groupby(enumerate(reversed(str(x))), lambda (n, i): n//3))[::-1]
'12.332.321'
>>>

--
Roberto Bonvallet



From wbrehaut at mcsnet.ca  Fri Oct  5 16:56:44 2007
From: wbrehaut at mcsnet.ca (Wayne Brehaut)
Date: Fri, 05 Oct 2007 14:56:44 -0600
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>	<13gcjeqbhmh152c@corp.supernews.com>	<mailman.1586.1191596681.2658.python-list@python.org>	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
	<47069e40$0$16410$426a74cc@news.free.fr>
Message-ID: <pn8dg3d7iu3fpn7pthn3orlmvvqmqvfi7v@4ax.com>

On Thu, 04 Oct 2007 04:12:04 +0200, Bruno Desthuilliers
<bdesth.quelquechose at free.quelquepart.fr> wrote:

>J. Clifford Dyer a ?crit :
>> On Fri, Oct 05, 2007 at 04:11:07PM -0000, Grant Edwards wrote
>> regarding Re: Python Magazine: Issue 1 Free!:
>> 
>>> On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:
>>> 
>>>>>> I've just been told by the editors at Python Magazine that
>>>>>> the first issue is out.
>>>>> 
>>>>> The first issue is issue number 10?
>>>>> 
>>>>> That's a bit silly.
>>>> 
>>>> It's the October edition. They obviously decided to make sure the
>>>> month numbering was consistent across the volumes.
>>> 
>>> I presumed that was the reasoning. It just seems counter-intuitive
>>> (and sort of un-Pythonic) to start numbering a sequence of objects
>>> at 10. ;)
>>> 
>> 
>> 
>> Well, it's also unpythonic to start numbering a sequence at 1, but
>> it's clearly the right thing to do in this case.
>
>As far as I'm concerned, if I had to number a magazine about 
>programming, I'd obviously start with 0.

And since the "first" issue is free that would be best here too.

>Then it would be n?1, n?10, 
>n?11, n?100 etc !-)

But probably with enough leading zeros to last the expected lifetime
(8 bits should about do it?)  so they'd sort properly:

0000 0000
0000 0001
etc.

wwwayne


From haraldarminmassa at gmail.com  Wed Oct 10 08:45:44 2007
From: haraldarminmassa at gmail.com (GHUM)
Date: Wed, 10 Oct 2007 05:45:44 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
Message-ID: <1192020344.600656.300770@50g2000hsm.googlegroups.com>

Michele,

> At work we are shopping for a Web framework, so I have been looking at
> the available options on the current market.

just because you were involved in creating an own version of Python
does NOT free you from the social obligation to create your own Python
web framework. So stop shopping and start announcing your own pwf like
all other Python programmers do.

Harald



From ncoghlan at gmail.com  Mon Oct  1 17:42:34 2007
From: ncoghlan at gmail.com (NickC)
Date: Mon, 01 Oct 2007 14:42:34 -0700
Subject: Python 3.0 migration plans?
In-Reply-To: <1191083377.191358.303320@d55g2000hsg.googlegroups.com>
References: <mailman.1195.1190936289.2658.python-list@python.org>
	<1191083377.191358.303320@d55g2000hsg.googlegroups.com>
Message-ID: <1191274954.862049.299800@r29g2000hsg.googlegroups.com>

On Sep 30, 2:29 am, John Roth <JohnRo... at jhrothjr.com> wrote:
> I was thinking of starting work on converting Python FIT to 3.0, and
> then they posted PEP 3137. I think it's a real good idea, but it shows
> that 3.0a1 isn't ready for a conversion effort.
>
> http://www.python.org/dev/peps/pep-3137/
>
> I'll look at it again in a year or so.
>
> John Roth

When 3.0b1 comes out is probably the time to start looking seriously
at conversion. Until then, major course corrections (like PEP 3137)
will still be a possibility. Before the first beta, the best idea is
probably just to keep a watchful eye on the development to see if you
spot any show-stopper problems that might lead to the need for such a
course correction :)

Regards,
Nick.



From drcolombes at yahoo.com  Fri Oct 12 20:34:16 2007
From: drcolombes at yahoo.com (Dr. Colombes)
Date: Fri, 12 Oct 2007 17:34:16 -0700 (PDT)
Subject: How to modify EVDEV.py to record Keyboard Key RELEASE  times?
Message-ID: <996305.22470.qm@web38712.mail.mud.yahoo.com>

   I'm using a modified EVDEV.py program (see below) to record inter-keystroke times for Keystroke triples and doubles (t2 - t1, t3 -t1).   These times are key PRESS times.   

   How - where can EVDEV.py be modified (without too much trouble) to record Keystroke RELEASE times also ?

   Thanks for your help.

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

#!/usr/bin/env python
""" evdev.py

This is a Python interface to the Linux input system's event device.
Events can be read from an open event file and decoded into spiffy
python objects. The Event objects can optionally be fed into a Device
object that represents the complete state of the device being monitored.

Copyright (C) 2003-2004 Micah Dowty <micah at navi.cx>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
"""

import struct, sys, os, time
from socket import gethostname
from fcntl import ioctl

__all__ = ["Event", "Device"]


def demo():
    """Open the event device named on the command line, use incoming
       events to update a device, and show the state of this device.
       """
    dev = Device(sys.argv[1])
    try:
        while 1:
            dev.poll()
    except:
        dev.log.close()
    return dev.get_filename()



class BaseDevice:
    """Base class representing the state of an input device, with axes and buttons.
       Event instances can be fed into the Device to update its state.
       """
    def __init__(self):
        self.axes = {}
        self.buttons = {}

        self.name = None
        self.next2last = None
        self.next2lasttime = None
        self.next2lastpress = 'NONE'
        self.last = None
        self.lasttime = None
        self.lastpress = 'NONE'


        self.echo = {}
        #make log directory
        if not os.path.isdir("./logs"):
            os.mkdir("./logs")
        #new filename
        hostname = str(gethostname())
        filename = str(hostname) + "_log_" + str(time.asctime()).replace(":", "_").replace(" ", "_")
        #open log file
        self.log = open("./logs/" + filename, "w")
    self.filename = "./logs/" + filename
        #self.log.write("\n\n\n\nHOSTNAME:  " + str(hostname) + "\n" + ("_" * 60) + "\n")

    def get_filename(self):
    return self.filename

    def __repr__(self):
        return "<Device name=%r axes=%r buttons=%r>" % (
            self.name, self.axes, self.buttons)

    def update(self, event):
        f = getattr(self, "update_%s" % event.type, None)
        if f:
            f(event)

    def update_EV_KEY(self, event):
        if event.code not in self.echo:
            self.echo[event.code] = 0
        if self.echo[event.code] >= 1:
            self.echo[event.code] = 0
            return
        else:
            self.echo[event.code] += 1

        now = time.time()

        if self.lasttime == None:
            #self.lasttime = time.time()
            self.lasttime = now
    if self.next2lasttime == None:
        self.next2lasttime = now
        #now = time.time()
        newtime = now - self.lasttime
    new3time = now - self.next2lasttime
        #self.log.write(repr(self.lastpress) + "_" + repr(event.code) + "\t\t" + str(newtime) + "\n")
        self.log.write(self.lastpress + "_" + event.code + "\t\t" + str(newtime) + "\n")

        self.log.write(self.next2lastpress + "_" + self.lastpress + "_" + event.code + "\t\t" + str(new3time) + "\n")
    
    self.next2lastpress = self.lastpress
        self.lastpress = event.code

    self.next2lasttime = self.lasttime
        self.lasttime = now
    

    def update_EV_ABS(self, event):
        self.axes[event.code] = event.value

    def update_EV_REL(self, event):
        self.axes[event.code] = self.axes.get(event.code, 0) + event.value

    def __getitem__(self, name):
        """Retrieve the current value of an axis or button,
           or zero if no data has been received for it yet.
           """
        if name in self.axes:
            return self.axes[name]
        else:
            return self.buttons.get(name, 0)


# evdev ioctl constants. The horrible mess here
# is to silence silly FutureWarnings
EVIOCGNAME_512 = ~int(~0x82004506L & 0xFFFFFFFFL)
EVIOCGID       = ~int(~0x80084502L & 0xFFFFFFFFL)
EVIOCGBIT_512  = ~int(~0x81fe4520L & 0xFFFFFFFFL)
EVIOCGABS_512  = ~int(~0x80144540L & 0xFFFFFFFFL)


class Device(BaseDevice):
    """An abstract input device attached to a Linux evdev device node"""
    def __init__(self, filename):
        BaseDevice.__init__(self)
        self.fd = os.open(filename, os.O_RDONLY)
        self.packetSize = struct.calcsize(Event.format)
        self.readMetadata()

    def poll(self):
        """Receive and process all available input events"""
        while 1:
            try:
                buffer = os.read(self.fd, self.packetSize)
            except OSError:
                print "Could not open event device"
                return
            self.update(Event(unpack=buffer))

    def readMetadata(self):
        """Read device identity and capabilities via ioctl()"""
        buffer = "\0"*512

        # Read the name
        self.name = ioctl(self.fd, EVIOCGNAME_512, buffer)
        self.name = self.name[:self.name.find("\0")]

        # Read info on each absolute axis
        absmap = Event.codeMaps['EV_ABS']
        buffer = "\0" * struct.calcsize("iiiii")
        self.absAxisInfo = {}
        for name, number in absmap.nameMap.iteritems():
            values = struct.unpack("iiiii", ioctl(self.fd, EVIOCGABS_512 + number, buffer))
            values = dict(zip(( 'value', 'min', 'max', 'fuzz', 'flat' ),values))
            self.absAxisInfo[name] = values

    def update_EV_ABS(self, event):
        """Scale the absolute axis into the range [-1, 1] using absAxisInfo"""
        try:
            info = self.absAxisInfo[event.code]    

        except KeyError:
            return
        range = float(info['max'] - info['min'])
        self.axes[event.code] = (event.value - info['min']) / range * 2.0 - 1.0


class EnumDict:
    """A 1:1 mapping from numbers to strings or other objects, for enumerated
       types and other assigned numbers. The mapping can be queried in either
       direction. All values, by default, map to themselves.
       """
    def __init__(self, numberMap):
        self.numberMap = numberMap
        self.nameMap = {}
        for key, value in numberMap.iteritems():
            self.nameMap[value] = key

    def toNumber(self, name):
        return self.nameMap.get(name, name)

    def fromNumber(self, num):
        return self.numberMap.get(num, num)


class Event:
    """Represents one linux input system event. It can
       be encoded and decoded in the 'struct input_event'
       format used by the kernel. Types and codes are automatically
       encoded and decoded with the #define names used in input.h
       """
    format = "LLHHl"

    typeMap = EnumDict({
        0x00: "EV_RST",
        0x01: "EV_KEY",
        0x02: "EV_REL",
        0x03: "EV_ABS",
        0x04: "EV_MSC",
        0x11: "EV_LED",
        0x12: "EV_SND",
        0x14: "EV_REP",
        0x15: "EV_FF",
        })

    codeMaps = {

        "EV_KEY": EnumDict({
        0: "RESERVED",
        1: "ESC",
        2: "1",
        3: "2",
        4: "3",
        5: "4",
        6: "5",
        7: "6",
        8: "7",
        9: "8",
        10: "9",
        11: "0",
        12: "-",
        13: "=",
        14: "BACKSPACE", # "\\b",
        15: "TAB", # "\\t",
        16: "q",
        17: "w",
        18: "e",
        19: "r",
        20: "t",
        21: "y",
        22: "u",
        23: "i",
        24: "o",
        25: "p",
        26: "[",
        27: "]",
        28: "NEWLINE", # "\\n",
        29: "LEFTCTRL",
        30: "a",
        31: "s",
        32: "d",
        33: "f",
        34: "g",
        35: "h",
        36: "j",
        37: "k",
        38: "l",
        39: "SEMICOLON", # ";",
        40: "'",
        41: "`",
        42: "LEFTSHIFT",
        43: "\\",
        44: "z",
        45: "x",
        46: "c",
        47: "v",
        48: "b",
        49: "n",
        50: "m",
        51: "COMMA", # ",",
        52: "PERIOD", # ".",
        53: "/",
        54: "RIGHTSHIFT",
        55: "*",
        56: "LEFTALT",
        57: "BLANK", # " ",
        58: "CAPSLOCK",
        59: "F1",
        60: "F2",
        61: "F3",
        62: "F4",
        63: "F5",
        64: "F6",
        65: "F7",
        66: "F8",
        67: "F9",
        68: "F10",
        69: "NUMLOCK",
        70: "SCROLLLOCK",
        71: "NK7", # "7",
        72: "NK8", # "8",
        73: "NK9", # "9",
        74: "NKMINUS", # "-",
        75: "NK4", # "4",
        76: "NK5", # "5",
        77: "NK6", # "6",
        78: "NK+", # "+",
        79: "NK1", # "1",
        80: "NK2", # "2",
        81: "NK3", # "3",
        82: "NK0", # "0",
        83: "NKPERIOD", # ".", 
        84: "103RD",
        85: "F13",
        86: "102ND",
        87: "F11",
        88: "F12",
        89: "F14",
        90: "F15",
        91: "F16",
        92: "F17",
        93: "F18",
        94: "F19",
        95: "F20",
        96: "NEWLINE", # "\\n",
        97: "RIGHTCTRL",
        98: "/",
        99: "SYSRQ",
        100: "RIGHTALT",
        101: "LINEFEED",
        102: "HOME",
        103: "UP",
        104: "PAGEUP",
        105: "LEFT",
        106: "RIGHT",
        107: "END",
        108: "DOWN",
        109: "PAGEDOWN",
        110: "INSERT",
        111: "DELETE",
        112: "MACRO",
        113: "MUTE",
        114: "VOLUMEDOWN",
        115: "VOLUMEUP",
        116: "POWER",
        117: "=",
        118: "KPPLUSMINUS",
        119: "PAUSE",
        120: "F21",
        121: "F22",
        122: "F23",
        123: "F24",
        124: "COMMA", # ",",
        125: "LEFTMETA",
        126: "RIGHTMETA",
        127: "COMPOSE",
        128: "STOP",
        129: "AGAIN",
        130: "PROPS",
        131: "UNDO",
        132: "FRONT",
        133: "COPY",
        134: "OPEN",
        135: "PASTE",
        136: "FIND",
        137: "CUT",
        138: "HELP",
        139: "MENU",
        140: "CALC",
        141: "SETUP",
        142: "SLEEP",
        143: "WAKEUP",
        144: "FILE",
        145: "SENDFILE",
        146: "DELETEFILE",
        147: "XFER",
        148: "PROG1",
        149: "PROG2",
        150: "WWW",
        151: "MSDOS",
        152: "COFFEE",
        153: "DIRECTION",
        154: "CYCLEWINDOWS",
        155: "MAIL",
        156: "BOOKMARKS",
        157: "COMPUTER",
        158: "BACK",
        159: "FORWARD",
        160: "CLOSECD",
        161: "EJECTCD",
        162: "EJECTCLOSECD",
        163: "NEXTSONG",
        164: "PLAYPAUSE",
        165: "PREVIOUSSONG",
        166: "STOPCD",
        167: "RECORD",
        168: "REWIND",
        169: "PHONE",
        170: "ISO",
        171: "CONFIG",
        172: "HOMEPAGE",
        173: "REFRESH",
        174: "EXIT",
        175: "MOVE",
        176: "EDIT",
        177: "SCROLLUP",
        178: "SCROLLDOWN",
        179: "(",
        180: ")",
        181: "INTL1",
        182: "INTL2",
        183: "INTL3",
        184: "INTL4",
        185: "INTL5",
        186: "INTL6",
        187: "INTL7",
        188: "INTL8",
        189: "INTL9",
        190: "LANG1",
        191: "LANG2",
        192: "LANG3",
        193: "LANG4",
        194: "LANG5",
        195: "LANG6",
        196: "LANG7",
        197: "LANG8",
        198: "LANG9",
        200: "PLAYCD",
        201: "PAUSECD",
        202: "PROG3",
        203: "PROG4",
        205: "SUSPEND",
        206: "CLOSE",
        220: "UNKNOWN",
        224: "BRIGHTNESSDOWN",
        225: "BRIGHTNESSUP",
        0x100: "BTN_0",
        0x101: "BTN_1",
        0x102: "BTN_2",
        0x103: "BTN_3",
        0x104: "BTN_4",
        0x105: "BTN_5",
        0x106: "BTN_6",
        0x107: "BTN_7",
        0x108: "BTN_8",
        0x109: "BTN_9",
        0x110: "BTN_LEFT",
        0x111: "BTN_RIGHT",
        0x112: "BTN_MIDDLE",
        0x113: "BTN_SIDE",
        0x114: "BTN_EXTRA",
        0x115: "BTN_FORWARD",
        0x116: "BTN_BACK",
        0x120: "BTN_TRIGGER",
        0x121: "BTN_THUMB",
        0x122: "BTN_THUMB2",
        0x123: "BTN_TOP",
        0x124: "BTN_TOP2",
        0x125: "BTN_PINKIE",
        0x126: "BTN_BASE",
        0x127: "BTN_BASE2",
        0x128: "BTN_BASE3",
        0x129: "BTN_BASE4",
        0x12a: "BTN_BASE5",
        0x12b: "BTN_BASE6",
        0x12f: "BTN_DEAD",
        0x130: "BTN_A",
        0x131: "BTN_B",
        0x132: "BTN_C",
        0x133: "BTN_X",
        0x134: "BTN_Y",
        0x135: "BTN_Z",
        0x136: "BTN_TL",
        0x137: "BTN_TR",
        0x138: "BTN_TL2",
        0x139: "BTN_TR2",
        0x13a: "BTN_SELECT",
        0x13b: "BTN_START",
        0x13c: "BTN_MODE",
        0x13d: "BTN_THUMBL",
        0x13e: "BTN_THUMBR",
        0x140: "BTN_TOOL_PEN",
        0x141: "BTN_TOOL_RUBBER",
        0x142: "BTN_TOOL_BRUSH",
        0x143: "BTN_TOOL_PENCIL",
        0x144: "BTN_TOOL_AIRBRUSH",
        0x145: "BTN_TOOL_FINGER",
        0x146: "BTN_TOOL_MOUSE",
        0x147: "BTN_TOOL_LENS",
        0x14a: "BTN_TOUCH",
        0x14b: "BTN_STYLUS",
        0x14c: "BTN_STYLUS2",
        }),

        "EV_REL": EnumDict({
        0x00: "REL_X",
        0x01: "REL_Y",
        0x02: "REL_Z",
        0x06: "REL_HWHEEL",
        0x07: "REL_DIAL",
        0x08: "REL_WHEEL",
        0x09: "REL_MISC",
        }),

        "EV_ABS": EnumDict({
        0x00: "ABS_X",
        0x01: "ABS_Y",
        0x02: "ABS_Z",
        0x03: "ABS_RX",
        0x04: "ABS_RY",
        0x05: "ABS_RZ",
        0x06: "ABS_THROTTLE",
        0x07: "ABS_RUDDER",
        0x08: "ABS_WHEEL",
        0x09: "ABS_GAS",
        0x0a: "ABS_BRAKE",
        0x10: "ABS_HAT0X",
        0x11: "ABS_HAT0Y",
        0x12: "ABS_HAT1X",
        0x13: "ABS_HAT1Y",
        0x14: "ABS_HAT2X",
        0x15: "ABS_HAT2Y",
        0x16: "ABS_HAT3X",
        0x17: "ABS_HAT3Y",
        0x18: "ABS_PRESSURE",
        0x19: "ABS_DISTANCE",
        0x1a: "ABS_TILT_X",
        0x1b: "ABS_TILT_Y",
        0x1c: "ABS_MISC",
        }),

        "EV_MSC": EnumDict({
        0x00: "MSC_SERIAL",
        0x01: "MSC_PULSELED",
        }),

    "EV_LED": EnumDict({
        0x00: "LED_NUML",
        0x01: "LED_CAPSL",
        0x02: "LED_SCROLLL",
        0x03: "LED_COMPOSE",
        0x04: "LED_KANA",
        0x05: "LED_SLEEP",
        0x06: "LED_SUSPEND",
        0x07: "LED_MUTE",
        0x08: "LED_MISC",
        }),

        "EV_REP": EnumDict({
        0x00: "REP_DELAY",
        0x01: "REP_PERIOD",
        }),

        "EV_SND": EnumDict({
        0x00: "SND_CLICK",
        0x01: "SND_BELL",
        }),
        }


    def __init__(self, timestamp=0, type=0, code=0, value=0, unpack=None, readFrom=None):
        self.timestamp = timestamp
        self.type = type
        self.code = code
        self.value = value
        if unpack is not None:
            self.unpack(unpack)
        if readFrom is not None:
            self.readFrom(readFrom)

    def __repr__(self):
        return "<Event timestamp=%r type=%r code=%r value=%r>" % (
            self.timestamp, self.type, self.code, self.value)

    def pack(self):
        """Pack this event into an input_event struct in
           the local machine's byte order.
           """
        secs = int(self.timestamp)
        usecs = int((self.timestamp - secs) * 1000000)
        packedType = self.typeMap.toNumber(self.type)
        if self.type in self.codeMaps:
            packedCode = self.codeMaps[self.type].toNumber(self.code)
        else:
            packedCode = self.code
        return struct.pack(self.format, secs, usecs, packedType,
                           packedCode, self.value)

    def unpack(self, s):
        """Unpack ourselves from the given string,, an
           input_event struct in the local byte order.
           """
        secs, usecs, packedType, packedCode, self.value = struct.unpack(self.format, s)
        self.timestamp = secs + (usecs / 1000000.0)
        self.type = self.typeMap.fromNumber(packedType)
        if self.type in self.codeMaps:
            self.code = self.codeMaps[self.type].fromNumber(packedCode)
        else:
            self.code = packedCode

    def readFrom(self, stream):
        """Read the next event from the given file-like object"""
        self.unpack(stream.read(struct.calcsize(self.format)))


if __name__ == "__main__":
    filename = demo()
    print "\nReturned file name = %s " % filename 
    text = open(filename).read()
    L = text.splitlines()
    L.sort()
    os.remove(filename)
    filename_sorted = filename + "_s"
    output = open (filename_sorted, "www")
    #filename_unsorted = filename + "_u"
    #output = open (filename_unsorted, "www")
    for line in L:
    line = line + "\n"
    output.write(line)
    #os.chmod(output, 0777)
    output.close()
    print " Created sorted file %s " % filename_sorted
    #print " Created UNsorted file %s " % filename_unsorted

### The End ###
 
       
---------------------------------
Boardwalk for $500? In 2007? Ha! 
Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071012/a7dcd4eb/attachment.html>

From beema.shafreen at gmail.com  Wed Oct 31 11:08:11 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Wed, 31 Oct 2007 20:38:11 +0530
Subject: dictionary
Message-ID: <aa405c1f0710310808h45504aa0m5535b16e4db5b681@mail.gmail.com>

hi everybody,
                  I have a file

2709852      2709911    A_16_P21360207    405    -59
  2710316      2710367    A_14_P136880    -42    -51
  2710325      2710384    A_16_P21360209    876    -59
  2711260      2711319    A_16_P21360210    -22    -59
  2711297      2711356    A_16_P03641959    254    -59
  2711610      2711659    A_16_P03641960    982    -49
  2712641      2712696    A_16_P03641962    1011    -55
  2713707      2713765    A_16_P41563648    43    -58
  2713808      2713861    A_16_P03641963    -16    -53
  2713845      2713893    A_16_P41563649    3460    -48
  2717353      2717412    A_16_P03641964    214    -59
  2717626      2717685    A_16_P41563655    25    -59
  2717710      2717754    A_16_P03641965    1250    -44
  2719004      2719063    A_16_P03641966    -36    -59

I need the result like this         A_16_P21360207 [405 ,   -59 , -42]
                                             A_14_P136880     [42 ,   -51,
876]
                                             A_16_P21360209    [876  ,  -59,
-22] That is the list has an overlapping with the next lines .....
My script:
d = {}
fh = open('final_lenght_probe_span','r')
while fh:
        a, b, c, span,len = fh.readline().strip().split('\t')
        a1,b1,c1,span1,len1 = fh.readline().strip().split('\t')
        probe_id = c
        d[probe_id] = []
        d[probe_id] = [span,len,span1]
        for key in d.keys():
                print key, d[key]
but i am not able to achive at my result what should i do for it.....
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/ad0c025d/attachment.html>

From istvan.albert at gmail.com  Tue Oct  9 08:46:34 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Tue, 09 Oct 2007 12:46:34 -0000
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191929178.103375.308840@50g2000hsm.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
Message-ID: <1191933994.473730.73100@22g2000hsm.googlegroups.com>

On Oct 9, 7:26 am, aaron.watt... at gmail.com wrote:

> No, it doesn't stand for anything.

It also reminds me of someone we all know, and I wish it didn't.

As the latin proverb says "Nomen est omen". Calling your package
"docindexer" would draw a lot more people. It is hard to justify to a
third party that a project named "nucular" actually does something
useful.

It looks like a great piece of work otherwise. Congrats.

ps. there is a python project named "The Devil Framework", I cringe
every time I hear about it. Nucular is not as bad, but it is close.



From gneuner2/ at /comcast.net  Mon Oct 22 11:30:51 2007
From: gneuner2/ at /comcast.net (George Neuner)
Date: Mon, 22 Oct 2007 11:30:51 -0400
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
Message-ID: <1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>

On Mon, 22 Oct 2007 05:50:30 -0700, Xah Lee <xah at xahlee.org> wrote:

>TeX, in my opinion, has done massive damage to the computing world.
>
>i have written on this variously in emails. No coherent argument, but
>the basic thoughts are here:
>http://xahlee.org/cmaci/notation/TeX_pestilence.html

Knuth did a whole lot more for computing than you have or, probably,
ever will.  Your arrogance is truly amazing.


>1. A typesetting system per se, not a mathematical expressions
>representation system.

So?

>2. The free nature, like cigeratte given to children, contaminated the
>entire field of math knowledge representation into 2 decades of
>stagnation.

What the frac are you talking about?

>3. Being a typesetting system, brainwashed entire generation of
>mathematicians into micro-spacing doodling.

Like they wouldn't be doodling anyway.  At least the TeX doodling is
likely to be readable (as if anyone cared).

>4. Inargurated a massive collection of documents that are invalid
>HTML. (due to the programing moron's ingorance and need to idolize a
>leader, and TeX's inherent problem of being a typesetting system that
>is unsuitable of representing any structure or semantics)

HTML is unsuitable for representing most structure and semantics.  And
legions of fumbling idiots compose brand new invalid HTML every day.

>5. This is arguable and trivial, but i think TeX judged as a computer
>language in particular its syntax, on esthetical grounds, sucks in
>major ways.

No one except you thinks TeX is a "computer language".

>Btw, a example of item 4 above, is Python's documentation. Fucking
>asses and holes.

Watch your language, there are children present.

George
--
for email reply remove "/" from address


From Afro.Systems at gmail.com  Thu Oct  4 00:49:44 2007
From: Afro.Systems at gmail.com (Tzury Bar Yochay)
Date: Thu, 04 Oct 2007 04:49:44 -0000
Subject: Having fun with python
In-Reply-To: <Xns99BE63415FAF2duncanbooth@127.0.0.1>
References: <1191396497.374407.262600@y42g2000hsy.googlegroups.com>
	<Xns99BE63415FAF2duncanbooth@127.0.0.1>
Message-ID: <1191473384.349002.9660@o80g2000hse.googlegroups.com>

> However, one point you have shown very clearly: the second one is much
> easier to tear apart and reassemble.

Sure.
Zen Of Python: Readbility Counts



From python.list at tim.thechases.com  Mon Oct  1 13:41:19 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 01 Oct 2007 12:41:19 -0500
Subject: Combine two dictionary...
In-Reply-To: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
Message-ID: <4701313F.7080606@tim.thechases.com>

> dict1={1: 4,  3: 5}... and 2 millions element
> dict2={3: 3,  8: 6}... and 3 millions element
> 
> I want to combine dict1 and dict2 and i don't want to use FOR because
> i need to performance.

If you combine your dict1 and dict2 to become result_dict, what 
should the result of result_dict[3] be?  3 or 5?

It sounds like the .update() method on a dict.

You can do something like

  dict2.update(dict1)

or

  disc1.update(dict2)

depending on your answer to the above question about what 
result_dict[3] should be.

If you need to preserve dict1 and dict2, rather than update one 
of them, you can make a copy first:

  result_dict = dict(dict1)
  result_dict.update(dict2)

this will produce result_dict[3] = 3  whereas if you want it to 
return 5, swap the order of dict1 and dict.

-tkc








From nagle at animats.com  Thu Oct 11 22:17:55 2007
From: nagle at animats.com (John Nagle)
Date: Thu, 11 Oct 2007 19:17:55 -0700
Subject: M2Crypto possible intermittent bug
In-Reply-To: <xniPi.4941$oA2.2506@nlpi068.nbdc.sbc.com>
References: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>
	<UO7Pi.11918$JD.8995@newssvr21.news.prodigy.net>
	<%tcPi.58508$YL5.4581@newssvr29.news.prodigy.net>
	<WZudncXyb6GhxpDanZ2dnUVZ_vKdnZ2d@comcast.com>
	<xniPi.4941$oA2.2506@nlpi068.nbdc.sbc.com>
Message-ID: <bCAPi.2014$R95.748@nlpi070.nbdc.sbc.com>

John Nagle wrote:
> Heikki Toivonen wrote:
>> John Nagle wrote:
>>>     Still having trouble reproducing the problem. But somewhere,
>>> something raised that bogus no-error exception three times.
>>> Anything that returns "(0, 'Error')" as exception data is a bug.
>>
>> If you can, build python and m2crypto with debug symbols, and place
>> breakpoints in |case SSL_ERROR_SYSCALL| blocks (from _ssl.i). Then rerun
>> the tests. That would be my first guess as to where these might be
>> coming from.
> 
>    I don't have the right compiler to build it on Windows, and it
> doesn't seem to be failing on Linux.  It failed three times during
> one test run and hasn't failed since.  That makes me suspect an
> uninitialized data problem in C code.  I'll try to reproduce the
> problem.
> 
>                 John Nagle

   I'm unable to reproduce the problem at this time. Even re-installingM2Crypto
doesn't make it recur.  I've been rerunning my regression test
over and over, and it's not repeatable.

   I suspect that for some reason Windows networking was generating
a local error, and the Windows error status to UNIX-like error status
conversion is wrong somewhere.

				John Nagle


From patrick.waldo at gmail.com  Sun Oct 21 14:32:57 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Sun, 21 Oct 2007 18:32:57 -0000
Subject: Problem Converting Word to UTF8 Text File
In-Reply-To: <mailman.282.1192986128.13605.python-list@python.org>
References: <1192984543.240902.3790@t8g2000prg.googlegroups.com>
	<mailman.282.1192986128.13605.python-list@python.org>
Message-ID: <1192991577.355854.264410@v29g2000prd.googlegroups.com>

Indeed, the shutil.copyfile(doc,txt_doc) was causing the problem for
the reason you stated.  So, I changed it to this:

for doc in glob.glob(input):
    txt_split = os.path.splitext(doc)
    txt_doc = txt_split[0] + '.txt'
    txt_doc_dir = os.path.join(input_dir,txt_doc)
    doc_dir = os.path.join(input_dir,doc)
    shutil.copy(doc_dir,txt_doc_dir)


However, I still cannot read the unicode from the Word file.  If take
out the first for-statement, I get a bunch of garbled text, which
isn't helpful.  I would save them all manually, but I want to figure
out how to do it in Python, since I'm just beginning.

My intuition says the problem is with

FileFormat=win32com.client.constants.wdFormatText

because it converts fine to a text file, just not a utf-8 text file.
How can I  modify this or is there another way to code this type of
file conversion from *.doc to *.txt with unicode characters?

Thanks

On Oct 21, 7:02 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Sun, 21 Oct 2007 13:35:43 -0300, <patrick.wa... at gmail.com> escribi?:
>
> > Hi all,
>
> > I'm trying to copy a bunch of microsoft word documents that have
> > unicode characters into utf-8 text files.  Everything works fine at
> > the beginning.  The word documents get converted and new utf-8 text
> > files with the same name get created.  And then I try to copy the data
> > and I keep on getting "TypeError: coercing to Unicode: need string or
> > buffer, instance found".  I'm probably copying the word document
> > wrong.  What can I do?
>
> Always remember to provide the full traceback.
> Where do you get the error? In the last line: shutil.copyfile?
> If the file already contains the text in utf-8, and you just want to make
> a copy, use shutil.copy as before.
> (or, why not tell Word to save the file using the .txt extension in the
> first place?)
>
> > for doc in glob.glob(input):
> >     txt_split = os.path.splitext(doc)
> >     txt_doc = txt_split[0] + '.txt'
> >     txt_doc = codecs.open(txt_doc,'w','utf-8')
> >     shutil.copyfile(doc,txt_doc)
>
> copyfile expects path names as arguments, not a
> codecs-wrapped-file-like-object
>
> --
> Gabriel Genellina




From trekker182 at comcast.net  Mon Oct 29 16:31:52 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Mon, 29 Oct 2007 16:31:52 -0400
Subject: clear shell screen
In-Reply-To: <op.t0x44pgvx6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <47254E9E.3040008@comcast.net>
	<op.t0x44pgvx6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <47264338.8060607@comcast.net>

Hmm...it works fine within the command line but then when I import os in 
python and then try os.system("cls"), i get that very fast 
opening/closing window and 0 inside the shell.

Gabriel Genellina wrote:
> En Mon, 29 Oct 2007 00:08:14 -0300, Shawn Minisall  
> <trekker182 at comcast.net> escribi?:
>
>   
>> Does anyone know how to clear the shell screen completely ?  I tried
>> import os and then os.system("clear") was said to have worked in Windows
>> XP, but it's just bringing up another window, then it turns black and
>> then it closes in within about a second moving the prompt at the
>> os.system("clear") line .  I've also tried os.system("cls") with the
>> same results.
>>     
>
> Try running cls from a command prompt. If it works, it should work from  
> inside Python, using os.system("cls")
>
>
>   



From deets at nospam.web.de  Fri Oct  5 07:28:37 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 05 Oct 2007 13:28:37 +0200
Subject: WebBased Vector 2D Graphics
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
Message-ID: <5mmlf5FeagctU1@mid.uni-berlin.de>

 cjt22 at bath.ac.uk wrote:

> Hi there
> 
> I currently have a Python program outputing to the command line,
> durations of 'completed Steps' and 'data items' in relation to time
> i.e.
> 
> 
> --------------jfh
>               ---------kl    //kl started after jfh finished
>                     % Ds  //new data arrived at this point in time
>                     -------pl (1)  //Details error with finsihed Step
>                            *kl      // This step is now outputed but
> due to error with pl is cancelled (no duration)
> 
> I am new to doing any web based development and don't have a clue
> where to start! I just wondered what is the best way to output this
> program to a web page graphically.
> 
> I want to be able to represent these durations "-----" as rectangles
> and as the program runs the page will refresh every 10 seconds, thus
> the boxes will expand with time until they have finished. New data
> will also be represented in boxes with a different colour. I believe
> some kind of script will have to be run which constantly updates the
> html page after x seconds which then causes the web page to refresh
> with the updated data.
> 
> Is there any way this web programming can be done in python. Or
> perhaps I can use soemthing such as ajax?
> 
> As mentioned previously, I have never done any web based development
> so don't really know what I'm talking about when trying to understand
> how I can go from this Python program output to producing some
> graphical output on a web page.

You certainly need to get on speed with webdevelopment. Otherwise you will
fail miserably.

There are several options here:

 - rendering a server-side image, deliver that embedded in a html-page

 - render using html tags like DIV and the like, which allow for positioned
colored rectangles and text, in pixel coordinates

 - canvas tag, to render 2D-drawing-commands

 - embedded SVG

All that can be enriched with AJAX to have that fancy
realtime-update-thingy.

Diez


From aaron.watters at gmail.com  Wed Oct 31 09:45:00 2007
From: aaron.watters at gmail.com (Aaron Watters)
Date: Wed, 31 Oct 2007 13:45:00 -0000
Subject: marshal vs pickle
In-Reply-To: <mailman.669.1193815903.13605.python-list@python.org>
References: <mailman.669.1193815903.13605.python-list@python.org>
Message-ID: <1193838300.998229.33380@v3g2000hsg.googlegroups.com>

On Oct 31, 3:31 am, "Evan Klitzke" <e... at yelp.com> wrote:
> Can anyone elaborate more on the difference between marshal and
> pickle. In what conditions would using marshal be unsafe? If one can
> guarantee that the marshalled objects would be created and read by the
> same version of Python, is that enough?

Yes, I think that's enough.  I like to use
marshal a lot because it's the absolutely fastest
way to store and load data to/from Python. Furthermore
because marshal is "stupid" the programmer has complete
control.  A lot of the overhead you get with the
pickles which make them generally much slower than
marshal come from the cleverness by which pickle will
recognized shared objects and all that junk.  When I
serialize, I generally don't need
that because I know what I'm doing.

For example both gadfly SQL

   http://gadfly.sourceforge.net

and nucular full text/fielded search

   http://nucular.sourceforge.net

use marshal as the underlying serializer.  Using cPickle
would probably make serialization worse than 2x slower.
This is one of the 2 or 3 key tricks which make these
packages as fast as they are.

   -- Aaron Watters

===
http://www.xfeedme.com/nucular/gut.py/go?FREETEXT=halloween



From zorg724 at yahoo.fr  Sat Oct 20 15:10:34 2007
From: zorg724 at yahoo.fr (sccs cscs)
Date: Sat, 20 Oct 2007 21:10:34 +0200 (CEST)
Subject: Get the instance name from a list by Reflection
Message-ID: <57045.94694.qm@web90513.mail.mud.yahoo.com>

Hello,
I cannot find into documentation how to get the instance name. I found the attributes __dict__,__class__ ,__bases__ __name__ ,
but if i have the code:

class A :pass
a1 = A ()
a2 = A ()
aList = [a1,a2]
for elem in aList :
    print elem.__instance_name__ ???

I expect to have "a1" "a2" ...
But it does not work ...
help please
Zorgi

             
---------------------------------
 Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071020/1ec2d8b5/attachment.html>

From paul.hankin at gmail.com  Sun Oct 14 10:41:52 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sun, 14 Oct 2007 14:41:52 -0000
Subject: Order of tuples in dict.items()
In-Reply-To: <47122790$0$8421$db0fefd9@news.zen.co.uk>
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
Message-ID: <1192372912.572289.260920@k35g2000prh.googlegroups.com>

On Oct 14, 3:28 pm, Will McGugan <w... at willNOmcguganSPAM.com> wrote:
> If I have two dictionaries containing identical values, can I be sure
> that the items() method will return tuples in the same order?
> ...
> Can I rely on this behavior?

No. To quote the python documentation:

> Keys and values are listed in an arbitrary order which is
> non-random, varies across Python implementations, and
> depends on the dictionary's history of insertions and deletions.

In general, looking at documentation is better than experimenting when
you want to know if something is either always true or mostly true.

--
Paul Hankin



From steve at holdenweb.com  Tue Oct  2 16:16:46 2007
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 02 Oct 2007 16:16:46 -0400
Subject: Mysqldb printing sql and params ... NEVER MIND
In-Reply-To: <0A53725C4A497848A7B3A0874B2598313D38C6@acesxch01.ADVENTISTCORP.NET>
References: <0A53725C4A497848A7B3A0874B2598313D38C4@acesxch01.ADVENTISTCORP.NET>
	<0A53725C4A497848A7B3A0874B2598313D38C6@acesxch01.ADVENTISTCORP.NET>
Message-ID: <fdu8vb$pvv$1@sea.gmane.org>

Sells, Fred wrote:
> el stupido here "accidently" put a couple of print statements into a
> mysqldb module when eclipse opened it from the link in the stacktrace;
> 
:-)
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From juan at juanreyero.com  Tue Oct 16 04:33:07 2007
From: juan at juanreyero.com (juan at juanreyero.com)
Date: Tue, 16 Oct 2007 10:33:07 +0200
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<873awb5wgw.fsf@benfinney.id.au>
Message-ID: <m2odez5uik.fsf@antares.emea.hpqcorp.net>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:
> Please don't ever recommend 'from foo import *' in end-user
> documentation. It's generally a bad practice and should only be done
> when the individual programmer understands the tradeoffs involved;
> putting it in the documentation for a module is setting a poor
> example.

Got it, and solved.  Thanks.  I have been carelessly using
it like that for a long time (I was, after all, guilty of
any name it imported into my namespace) and I didn't think
about the implications for others in the documentation. 

jm



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 09:39:29 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 10 Oct 2007 13:39:29 -0000
Subject: Singleton
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
Message-ID: <13gplgh75hot354@corp.supernews.com>

On Wed, 10 Oct 2007 09:36:56 +0000, pythoncurious wrote:

> So how do people solve this? Is there an obvious way that I missed?

Mostly by avoiding singletons. Why do you need only one instance? Perhaps 
you should consider the Borg pattern instead.

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531



-- 
Steven


From python at rcn.com  Wed Oct  3 13:22:03 2007
From: python at rcn.com (Raymond Hettinger)
Date: Wed, 03 Oct 2007 10:22:03 -0700
Subject: enumerate overflow
In-Reply-To: <7xmyv0nn7f.fsf@ruckus.brouhaha.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
	<mailman.1448.1191418743.2658.python-list@python.org>
	<7xmyv0nn7f.fsf@ruckus.brouhaha.com>
Message-ID: <1191432123.619871.226360@g4g2000hsf.googlegroups.com>

[Paul Rubin]
> I hope in 3.0 there's a real fix, i.e. the count should promote to
> long.

In Py2.6, I will mostly likely put in an automatic promotion to long
for both enumerate() and count().  It took a while to figure-out how
to do this without killing the performance for normal cases (ones used
in real programs, not examples contrived to say, "omg, see what
*could* happen").


Raymond





From stargaming at gmail.com  Mon Oct  1 10:21:52 2007
From: stargaming at gmail.com (Stargaming)
Date: 01 Oct 2007 14:21:52 GMT
Subject: Fwd: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<52c50880709302007g4103c6c6h9b09ee376fa77998@mail.gmail.com>
	<mailman.1323.1191208209.2658.python-list@python.org>
Message-ID: <47010280$0$11466$9b622d9e@news.freenet.de>

On Sun, 30 Sep 2007 20:10:05 -0700, Andres Riofrio wrote:

[snip]
>>From what I've read, seems that the principal reason for rejecting the
> PEP is that there was not much need (enthusiasm)... Well, then I have a
> question: Is there a way to make 5/2 return something other than an
> integer? I can do:
> class int(int):
>   def __add__(self, other):
>     pass
> but that will only work if I do int(5)/int(2)...
> 
> (setting __builtin__.int=int doesn't work, either)
> 
> What I'd like is to be able to implement what I put in the proposal, as
> I don't think it's a really big language change...
[snip]

You could make up an example implementation by using fractionizing_int
(1) / fractionizing_int(3) (or whatever name you come up with).

I don't know of any particularly nice way to Just Let It Work anywhere in 
python (perhaps some ugly byte code hacks, automatically wrapping ints). 
So, you would have to implement it in C if you want to propose this for 
CPython. And that's no 5 minute task, I guess.

Still, having this `int` behaviour working globally would include those 
previously mentioned irrational numbers (but Pi is rational in any 
visualization anyways, so FWIW that wouldn't be too much of a blockade). 
But where would you put normal integer division then? 
Introducing a new type seems best to me.

You could, as well, try to implement this in PyPy. If this would hit the 
broad masses is another question, though. ;)

Regards,
stargaming


From erik at myemma.com  Tue Oct 23 13:10:13 2007
From: erik at myemma.com (Erik Jones)
Date: Tue, 23 Oct 2007 12:10:13 -0500
Subject: greatest and least of these...
In-Reply-To: <471E19B1.2040909@comcast.net>
References: <471E19B1.2040909@comcast.net>
Message-ID: <A20392B8-6459-4ED0-BE0C-D7CA761D4FA0@myemma.com>

On Oct 23, 2007, at 10:56 AM, Shawn Minisall wrote:

> I just wrote a program to let the user input a series of whole numbers
> and tell them which is least and which is greatest based off of a  
> menu.
> However, the menu isn't kicking in after they pick a number.  I  
> included
> a while statement for a loop just for the menu and compared it to my
> other programs that have a similar setup and are working, but I'm
> stumped.   Here's the program...
>
> def main():
>
>     #define and initialize variables
>     #choice as int
>     choice = 0
>     #number as int
>     number = 0
>
>     #intro
>     print "WELCOME TO THE GREATEST AND LEAST NUMBER PROGRAM!"
>     print
>
>     #Menu loop
>     while choice != 2:
>         #display menu
>         print "Please choose from the following menu: "
>         print "1. Enter a number"
>         print "2. Exit"
>         print
>
>         #prompt user for their menu choice
>         choice = input("Enter your choice here: ")
>
>         #if statements to determine which choice
>         if choice == 1:
>             nums = []
>             while number >=0:
>                 nums.append(number)
>                 number = input("Please enter a number.")

You're telling the script to continue asking for numbers until a non- 
positive number is entered.  Enter a negative number and you'll see  
your menu again.  What you probably want is to change this.

>
>
>         elif choice == 2:
>             print "Have a great day!"
>
>             if len(nums) > 0:
>                 print "The smallest number that you entered  
> was:",min(nums)
>                 print "The largest number that you entered was:",max 
> (nums)
>
>         else:
>             #invalid
>             print "Invalid selection.  Enter either one or two."
>             print
>
> Also, if they quit the program with choice #2 and entered numbers, it
> should display the greatest and least of them.  If they just  
> started and
> didn't enter anything and want to quit, I get an error message saying
> UnboundLocalError: local variable 'nums' referenced before assignment.
> Isn't the if statement supposed to keep python from going there  
> since if
> they didn't enter any input, the length of the list should just be  
> zero.

The exception is because you're not ensure that nums is ever  
initialized.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From panguohualove at sina.com  Tue Oct  9 01:47:21 2007
From: panguohualove at sina.com (panguohua)
Date: Mon, 08 Oct 2007 22:47:21 -0700
Subject: more information for making money
Message-ID: <1191908841.319307.177990@22g2000hsm.googlegroups.com>

www.space666.com



good!!!!!!!!!!!



From martin at v.loewis.de  Sun Oct 21 16:57:57 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 21 Oct 2007 22:57:57 +0200
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>	
	<471B8711.1020509@v.loewis.de>	
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>	
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
Message-ID: <471BBD55.9030601@v.loewis.de>

> Could you emphasize a little more? I haven't worked much at all with
> the Python C API, so I may be misunderstanding. First of all, you say
> that the "Python C API is object oriented", which is contradictory
> because it should read "Python C++ API is object oriented". Perhaps
> this is a typo, or maybe you're referencing some C++ wrapper for the
> Python C API that you failed to mention the name of.

No, I literally meant that the Python C API is object-oriented.
You don't need an object-oriented language to write object-oriented
code.

> You also mentioned that there are "multiple C++ wrappers arround the
> Python C API Available"... could you provide names for a few of the
> popular ones?

The most popular ones are Boost.Python, CXX, and PySTL.

Regards,
Martin


From carsten at uniqsys.com  Thu Oct 11 09:42:10 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Thu, 11 Oct 2007 09:42:10 -0400
Subject: Problem with MySQL cursor
In-Reply-To: <fel7m3$btq$03$1@news.t-online.com>
References: <fel7m3$btq$03$1@news.t-online.com>
Message-ID: <1192110130.3387.5.camel@dot.uniqsys.com>

On Thu, 2007-10-11 at 15:14 +0200, Florian Lindner wrote:
> Hello,
> I have a function that executes a SQL statement with MySQLdb:
> 
> def executeSQL(sql,  *args):
>     print sql % args
>     cursor = conn.cursor()
>     cursor.execute(sql, args)
>     cursor.close()
> 
> it's called like that:
> 
>     sql = "INSERT INTO %s (%s) VALUES (%s)"
>     executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)

You can't use parameter binding to substitute table names and column
names, or any other syntax element, into a query. You can only bind
parameters in places where a literal value would be allowed (more or
less, the real rules are more complicated, but this rule of thumb gets
you close enough). You have to construct the query string like this, for
example:

sql = "INSERT INTO "+DOMAIN_TABLE+"("+DOMAIN_FIELD+") VALUES (%s)"
executeSQL(sql, domainname)

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From deets at nospam.web.de  Thu Oct 25 17:41:41 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 25 Oct 2007 23:41:41 +0200
Subject: threading problem..
In-Reply-To: <1193346037.742074.16730@z9g2000hsf.googlegroups.com>
References: <1193346037.742074.16730@z9g2000hsf.googlegroups.com>
Message-ID: <5ocgt5Fm7ku1U1@mid.uni-berlin.de>

Abandoned schrieb:
> Hi..
> I want to threading but i have a interesting error..
> ==========
> class SelectAll(threading.Thread):
>    def __init__(self, name):
>       threading.Thread.__init__(self)
>       self.name = name #kelime
> 
>    def run(self):
>     ....
>     ....
>     self.result=...
> nglist=[]
> current = SelectAll(name)
> nglist.append(current)
> current.start()
>  for aaa in nglist:
>       aaa.join()
> 
> =============
> 
> and it gives me this error:
>     aaa.join()
> 
> AttributeError: 'dict' object has no attribute 'join'
> 
> 
> What is the problem i can't understand this error :(

that you have an attribute join on you SelectAll-objects that shadows 
the Thread.join

Diez



From grante at visi.com  Tue Oct 16 23:38:04 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 17 Oct 2007 03:38:04 -0000
Subject: why doesn't have this list a "reply-to" ?
References: <471530E3.9090602@gmail.com>
	<mailman.96.1192573101.13605.python-list@python.org>
Message-ID: <13hb0ss1oamhr14@corp.supernews.com>

On 2007-10-16, Robert Kern <robert.kern at gmail.com> wrote:

> It's not universal. Many people consider it harmful. Google "reply-to considered
> harmful" for a variety of opinions, for and against.
>
> I use GMane to read and post to this list because I like my lists to act like
> USENET.
>
>   http://gmane.org

Since "this list" is just mirroring a Usenet news group,
wouldn't it be more straight-forward to just use a real Usenet
news server?

-- 
Grant Edwards                   grante             Yow!  You should all JUMP
                                  at               UP AND DOWN for TWO HOURS
                               visi.com            while I decide on a NEW
                                                   CAREER!!


From trekker182 at comcast.net  Sun Oct 28 21:02:02 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Sun, 28 Oct 2007 21:02:02 -0400
Subject: while within while
In-Reply-To: <13i88bo9djpu279@corp.supernews.com>
References: <mailman.515.1193512303.13605.python-list@python.org>
	<13i88bo9djpu279@corp.supernews.com>
Message-ID: <4725310A.7080500@comcast.net>

Thanks a lot for your suggestions.  Unfortunately, a lot of the issues 
brought up were simply the way I was taught by my professor and the way 
she wants things done,having to use a numbered menu as opposed to 
entering r, p or s, being taught just to use one main function for the 
entire program, having to init all variables in the program b4 the 
actual program starts or else points off for each program, while 
statements surrounding every input statement for input validation 
purposes...

Going beyond those things, would look like someone else wrote my program 
since we didn't talk about or ever cover them in class.  I think we get 
to true statements in the next chapter next week.

It turns out that my problem was with indentation, as soon as I fixed 
it, it's working perfectly now. 

thx

Dennis Lee Bieber wrote:
> On Sat, 27 Oct 2007 15:11:37 -0400, Shawn Minisall
> <trekker182 at comcast.net> declaimed the following in comp.lang.python:
>
> 	Smells like homework -- so this week I won't be supplying a working
> program (even one with no documentation -- requiring the student to
> study the reference manuals to figure out what is being done) I'm going
> to more focus on some stylistic features.
>   
>> import random
>>
>>
>> def main():
>>
>>     #define and initialize variables
>>     #choice as int
>>     choice = 0
>>     
> 	
> 	Please note that one cannot define /type/ for a variable NAME. the
> name is just a name that is attached to an object, and can be attached
> to some other object later... It is the object on the RHS of the
> assignment that has a type.
>
> 	The above binds the name "choice" to an object of type integer -- a
> 0... The type is part of the 0, not of the name.
>
>   
>>     #play again loop
>>     again = "no"
>>     
>
> 	<snip>
>   
>>    
>>     #Menu loop
>>     while choice != 4:
>>         #display menu
>>         print "Please choose from the following menu: "
>>         print "1. See the rules"
>>         print "2. Play against the computer"
>>         print "3. Play a two player game"
>>         print "4. Exit"
>>        
>>         #prompt user for their menu choice
>>         choice = input("Please enter your choice here: ")
>>         print
>>
>>     
> 	Rather than having to pre-initialize your loop conditional (and
> notice that you can use ANY value EXCEPT 4 to initialize it) just for
> the pleasure of using a while loop (I'm guessing being taught from the
> "go to is forbidden" crowd, and not knowing of structured loop exits..)
> that you go out of your way to avoid duplicating code (Pardon my
> phrasing -- I'm not quite sure what my point was trying to be...) Let me
> just mention that in Ada, what you are trying would be formulated as:
>
> loop
> 	--display menu
> 	-- prompt for choice
> 	exit when choice = 4
> 	-- process other choices
> end loop
>
> 	No need to preload the condition variable, since the first time it
> is used is when it receives a value from the user.
>
> 	Python can produce the same formulation... (hint: the naked "loop"
> in Ada is "while True" in Python).
>
>   
>>        
>>
>>         #if statements to determine which choice
>>         if choice == 1:
>>             print
>>             print "The rules of the game are as follows: "
>>             print
>>             print "Rock Covers Rock"
>>             print
>>             print "Rock Smashes Scissors"
>>             print
>>             print "Scissors Cuts Paper"
>>             print
>>             print
>>
>>     
> 	Python triple quoted strings can be split over multiple lines:
>
> 	print """
> The rules of the game are as follows:
>
> 	Paper Covers Rock
>
> 	Scissors Cut Paper
>
> 	Rock Breaks Scissors
>
> """
> even better -- This should be an initialized item at the start of the
> program:
>
> rules = """
> The rules... etc.
> """
> and then you just use one
>
> 	print rules
>
>         
>   
>>        
>>         elif choice == 2:
>>             while again[0] == "y":
>>     
>
> 	I'd suggest same concern as prior while loop... don't preload
> choices when the real determination can only be made after first
> entering the loop.
>
> 	Secondly... If you are taking user input, you should probably expect
> things like case changes....
>
> 		while again.lower().startswith("y")
>
>   
>>                 #display menu
>>                 print "Please choose a weapon from the following menu: "
>>                 print "1. Rock"
>>                 print "2. Paper"
>>                 print "3. Scissors"
>>
>>                 while weaponchoice != 1 and weaponchoice != 2 and 
>> weaponchoice != 3:
>>     
>
> 	A third preloaded nested while loop... And why require numeric
> input? Why not allow the user to enter, say "r" for rock?
>
>   
>>                     weaponchoice = input("Please choose a weapon: ")
>>     
>
> 	Don't use input()... input() will evaluate whatever the user types
> as Python statements... the user could enter a one-liner that attempts
> to delete all the files on your machine.
>
> 	USE raw_input() -- this gives you a string which you can then pass
> to a conversion function that will only return what is valid...
>
> 		... = int(raw_input(...))
>
>
>   
>>                     if weaponchoice != 1 and weaponchoice != 2 and 
>> weaponchoice != 3:
>>                         print
>>                         print "Error. Please enter a number from 1-3."
>>
>>                 decision = (1, 2, 3)
>>     
>
> 	Presuming this tuple will never change, this is another candidate
> for initialization at the top of the file...
>
> DECISION = (1, 2, 3)	#all caps is a convention to indicate a
> "constant"
> 	
>   
>>                 ai = str((random.choice(decision)))
>>
>>     
> 	Why are you taking a random integer, converting it to a string, and
> then...
>
>   
>>                 if ai == "1":
>>                     ai = "rock"
>>     
>
> ... comparing the stringified value to a character literal -- only to
> then assign a text string to the variable?
>
>   
>>                 if ai == "2":
>>                     ai = "paper"
>>                 if ai == "3":
>>                     ai = "scissors"
>>
>>     
>
> 		ai = ["rock", "paper", "scissors"][random.choice(decision)]
>
> replaces all the above...
>
>   
>>             if weaponchoice == 1:
>>                 weaponchoice = "rock"
>>
>>             elif weaponchoice == 2:
>>                 weaponchoice = "paper"
>>
>>             else:
>>                 weaponchoice = "scissors"
>>
>>     
>
> 	Another "use the same variable name but change it from numeric input
> to text string"
>
> 		wc = ["rock", "paper", "scissors"][weaponchoice]
>
>
>   
>>             print "====================="
>>             print "you choose " + weaponchoice
>>             print
>>             print "I choose " + ai
>>             print
>>
>>             if weaponchoice == "rock" and ai == "scissors":
>>                 win += 1
>>                 print "You WIN by SMASHING those SCISSORS!"
>>
>>             elif weaponchoice == "paper" and ai == "rock":
>>                 win += 1
>>                 print "You WIN by COVERING that ROCK!"
>>
>>             elif weaponchoice == "scissors" and ai == "paper":
>>                 win += 1
>>                 print "You WIN by CUTTING that PAPER!"
>>
>>             elif weaponchoice == ai:
>>                 tie += 1
>>                 print "YOU TIE!"
>>
>>             else:
>>                 lose += 1
>>                 print "YOU LOSE!"
>>
>>     
>
> 	I'd suggest converting the above to a decision table, though that
> may be getting too fancy for an intro homework assignment...
>
> DTable = { 	"rock" : {	"rock" : ("TIE", ""),
> 					 	"paper" : ("LOSE", "Covers"),
> 					 	"scissors" : ("WIN", "Breaks") },
> 			"paper" : {	"rock" : ("WIN", "Covers"),
> 						"paper" : ("TIE", ""),
> 						"scissors" : ("LOSE", "Cut") },
> 			"scissors" : {	"rock" : ("LOSE", "Breaks"),
> 							"paper" : ("WIN", "Cut"),
> 							"scissors" : ("TIE, "") }	}
>
> used by:
>
> (result, means) = DTable[ai][wc]
> if result == "TIE":
> 	print "It is a tie"
> 	tie += 1
> elif result == "LOSE":
> 	print "You lose: %s %s %s" % (ai, means, wc)
> 	lose += 1
> elif result == "WIN":
> 	print "You win: %s %s %s" % (wc, means, ai)
> 	win += 1
>
>
>   
>>         elif choice == 4:
>>             print "Have a great day!"
>>             print
>>             print "Thanks for playing!"
>>
>>     
> 	Note how you are still processing the exit choice here which means
> you have two places in the code that have to check for choice 4
>
>
>
> 	If I haven't confused you enough with the above, and you still are
> enamored of numeric menu choices...
>
> def getNumChoice(menu, minvalue, maxvalue):
> 	while True
> 		print menu
> 		c = int(raw_input("\nEnter your choice [by number] => "))
> 		if minvalue <= c <= maxvalue:	return c
> 		print "\n*** %s is not valid, please try again\n\n" % c
>
> usage...
>
> MAINMENU = """
> Please select from the following choices:
>
> 	1:	See the rules
> 	2:	Play against the computer
> 	3:	Play against another player
> 	4:	Exit
> """
>
> WEAPONMENU = """
> Please select from the following choices:
>
> 	1:	Rock
> 	2:	Paper
> 	3:	Scissors
> """
>
> WEAPONLIST = [ "rock", "paper", "scissors" ]
>
> while True:
> 	mc = getNumChoice(MAINMENU, 1, 4) != 4
> 	if mc == 1:
> 		#do stuff
> 	elif mc == 2:
> 		wc = WEAPONLIST[getNumChoice(WEAPONMENU, 1, 3) - 1]
> 		ai = random.choice(WEAPONLIST)
>
> etc...
>   



From kadeko at gmail.com  Mon Oct 15 07:01:49 2007
From: kadeko at gmail.com (looping)
Date: Mon, 15 Oct 2007 04:01:49 -0700
Subject: Twisted (or for loops ?) madness
In-Reply-To: <1192444397.510886.48990@i13g2000prf.googlegroups.com>
References: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
	<1192443010.957983.81970@q3g2000prf.googlegroups.com>
	<1192444397.510886.48990@i13g2000prf.googlegroups.com>
Message-ID: <1192446109.954833.322080@v29g2000prd.googlegroups.com>

On Oct 15, 12:33 pm, Michele Simionato <michele.simion... at gmail.com>
wrote:
> is a design decision, in the sense that Python always do late binding.
> If you

> you will get funclist[0]() == funclist[1]() == funclist[2]() == 3 (you
> get the latest
> binding of "i"). As you see, it has nothing to do with lambdas.
>

Thanks Diez, replacing my addCallback with d.addCallback(lambda
result, comp=c: comp.compile()) do the trick.

So if I understand what Michele wrote (thanks too), when a function is
defined (with def), no scope is saved and every variable value not
passed in parameter is lost ?  It means that variable value come from
the outer scope when the function is called ?




From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 20 21:01:51 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 21 Oct 2007 01:01:51 -0000
Subject: what is the difference between the two kinds of brackets?
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
	<NQkSi.6944$oA2.3942@nlpi068.nbdc.sbc.com>
	<mailman.256.1192884231.13605.python-list@python.org>
Message-ID: <13hl97vnvqui6df@corp.supernews.com>

On Sat, 20 Oct 2007 12:43:31 +0000, Steve Lamb wrote:

> The quick answer is that tuples can be indexes into directories
> while lists cannot.


A note on terminology: the things inside curly brackets {} are called 
dictionaries, or dicts, not directories. And the things you use to store 
data in dictionaries are called keys, not indexes:

# Lists have indexes:
L = ['x', 'y', 'z']
L[0] # returns the item in position 0

# Dicts have keys:
D = {'a': 'x', 2: 'y', 7.8: 'z'}
D['a'] # returns the item with key 'a'



-- 
Steven.


From pavlovevidence at gmail.com  Wed Oct  3 23:00:20 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 3 Oct 2007 23:00:20 -0400
Subject: migrating to packages
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
Message-ID: <47045b29$0$11005$4c368faf@roadrunner.com>

On Wed, 03 Oct 2007 22:28:57 -0300, gherzig wrote:


>> On Oct 3, 2007, at 11:42 AM, Gerardo Herzig wrote:
>>
>>> Hi all. I have a single file with several classes, wich i want to
>>> separate into several packages.
>>> The big file is named, say MYCLASES, and contains a class named
>>> A(object), and B(A).
>>>
>>> We have been using this MYCLASES in the from MYCLASES import B syntax,
>>> but i cant reproduce this syntax using packages. Im forced to write
>>> from PACKAGE.B import *, and if that means
>>> i have to touch so many files, that would really be a problem to me.
>>> There is (i cant find it yet) a place where i can read about that kind
>>> of package 'migration' situation?
>>>
>>> Because i *really* want to keep the FROM PACKAGE import B syntax.
>>
>> http://www.python.org/doc/current/tut/
>> node8.html#SECTION008400000000000000000
> I have already read those files (and i just read it again), but still
> cant find the solution. Maybe i just do not explain myself in the
> correct way (or  i am very very stupid :)
> I will expose my case quicly.
> The MYCLASES.py file contains the A class, so i can use from MYCLASES
> import A
> a = ()
> 
> Using the "package mode" (wich looks fine BTW), having the simple
> MYCLASES/
>      __init__.py
>      A.py
> 
> forces my (i guess) to use the
> from MYCLASES.A import A
> 
> which is not what i want, because the big amount of files i will have to
> modify (and im not alones, there is a group of dudes who use this
> MYCLASES)
> 
> Im i missing something in that docs you post? Thanks!!

Add these lines in __init__.py:

from MYCLASSES.A import A
from MYCLASSES.B import B


Carl Banks



From schaefer.mp at gmail.com  Tue Oct 16 17:48:52 2007
From: schaefer.mp at gmail.com (schaefer.mp at gmail.com)
Date: Tue, 16 Oct 2007 21:48:52 -0000
Subject: negative base raised to fractional exponent
Message-ID: <1192571332.470809.279160@v23g2000prn.googlegroups.com>

Does anyone know of an approximation to raising a negative base to a
fractional exponent? For example, (-3)^-4.11111 since this cannot be
computed without using imaginary numbers. Any help is appreciated.



From grante at visi.com  Fri Oct 12 11:51:07 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 15:51:07 -0000
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<13gv5jj9u5hege8@corp.supernews.com>
Message-ID: <13gv5vb9u7fqg21@corp.supernews.com>

On 2007-10-12, Grant Edwards <grante at visi.com> wrote:

> I use wxPython, because it uses Gtk on Linux, and Gtk is
> "native" for both me and for my Windows users.

I didn't state that very well.  

What I meant was that wxPython uses Gtk under Linux (which is
native for me) so wxPython looks native for both me and my
Windows users.

-- 
Grant Edwards                   grante             Yow! I demand IMPUNITY!
                                  at               
                               visi.com            


From bignose+hates-spam at benfinney.id.au  Sun Oct 28 23:15:04 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 14:15:04 +1100
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
References: <87bqaihmq7.fsf@benfinney.id.au>
	<1193624413.723453.71700@22g2000hsm.googlegroups.com>
Message-ID: <87odeifw7b.fsf@benfinney.id.au>

Kay Schluehr <kay.schluehr at gmx.net> writes:

> I used to write once a coverage tool ( maybe I can factor this out
> of my tool suite some time )

That'd be wonderful. I'd like to see comparisons between different
test-coverage tools, just as we have the different but comparable
'pyflakes' and 'pylint' code inspection tools.

> Given it's nature it might act transformative. So a statement:
> 
> if a and b:
>     BLOCK
> 
> can be transformed into
> 
> if a:
>     if b:
>         BLOCK

I don't see that this actually helps in the cases described in the
original post. The lack of coverage checking isn't "are both sides of
an 'and' or 'or' expression evaluated", since that's the job of the
language runtime, and is outside the scope of our unit test.

what needs to be tested is "do the tests execute both the 'true' and
'false' branches of this 'if' statement", or "do the tests exercise
the 'no iterations' case for this loop", et cetera. That is, whether
all the functional branches are exercised by tests, not whether the
language is parsed correctly.

-- 
 \    "Know what I hate most? Rhetorical questions."  -- Henry N. Camp |
  `\                                                                   |
_o__)                                                                  |
Ben Finney


From paul.hankin at gmail.com  Wed Oct 31 20:12:26 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 01 Nov 2007 00:12:26 -0000
Subject: a few questions.
In-Reply-To: <kbWdnWteLYD4YLXanZ2dnUVZ_sudnZ2d@comcast.com>
References: <mailman.710.1193866047.13605.python-list@python.org>
	<kbWdnWteLYD4YLXanZ2dnUVZ_sudnZ2d@comcast.com>
Message-ID: <1193875946.806750.211150@o38g2000hse.googlegroups.com>

On Oct 31, 10:10 pm, Larry Bates <larry.ba... at websafe.com> wrote:
> for i in xrange(0,5):
>       hundreds, remainder=divmod(stores[i], 100)
>       print "Store: %i %s" % (i+1, hundreds*"*")

Yes, or since you don't need 'remainder'...

for i in range(5):
     hundreds = stores[i] // 100
     print "Store: %i %s" % (i + 1, '*' * hundreds)

--
Paul Hankin



From arnodel at googlemail.com  Thu Oct 25 05:30:29 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Thu, 25 Oct 2007 09:30:29 -0000
Subject: about functions question
In-Reply-To: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
Message-ID: <1193304629.429307.50980@v3g2000hsg.googlegroups.com>

On Oct 25, 7:28 am, NoName <zaz... at gmail.com> wrote:
> I try it:
>
> def b():
>   ...
>   a()
>   ...
>
> def a():
>   ...
>   b()
>   ...
>
> b()
> it's not work.

Probably all those dots!

> Is it possible pre-define function like in c++ or place functions code
> after main block?

Python binds names to objects dynamically: this means that when a() is
compiled, the "b()" line in its definition is compiled to something
that says "look for the object currently bound to the name 'b' in the
global dictionary, and execute the __call__ method of that object with
no arguments".  It doesn't make any difference what object 'b' is
bound to at this time.

HTH

--
Arnaud




From mail at timgolden.me.uk  Fri Oct 12 06:38:55 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 12 Oct 2007 11:38:55 +0100
Subject: Script to Remove Attachments in Exchange Mailbox
In-Reply-To: <470F2FC4.8020908@timgolden.me.uk>
References: <1192110265.529187.48770@y42g2000hsy.googlegroups.com>	<mailman.85.1192114940.927.python-list@python.org>	<1192118025.085938.283610@19g2000hsx.googlegroups.com>
	<470F2FC4.8020908@timgolden.me.uk>
Message-ID: <470F4EBF.2020309@timgolden.me.uk>

Tim Golden wrote:
> [KDawg44]
> 
>>>> I am frustrated with my users who send large files around the office
>>>> instead of using the network shares.
> 
> [Tim Golden]
>>> I have something v. similar, ...
>>> It's a while since they were last run to they're probably quite
>>> dusty but it sounds like the kind of thing you're after.
> 
> Well, here's[1] the first part -- running through folders and replacing
> big attachments with links. 

... and here's [1] the second part -- running through folders on disk
and replacing duplicate files with a link to the first one found. For
obvious reasons, be careful with this: it deletes files and replaces
them with hardlinks, but there's no rollback. Nor is it so well
commented as the other, I'm afraid, but I think it is still fairly
clear what's going on.

You call it with a space-separated list of directories to search
(usually one in my own experience) and it walks down those directory
trees looking for files of type INCLUDE_EXTENSIONS except for files
called IGNORE_FILES. Its comparison is very simple: comparing md5
hashes with no optimisations; obviously a lot of work could be done
there if it were an issue.

It ends up with nested dictionaries, the outer one keyed by filename,
the inner one by size and containing a list of directories where
files of that name/size are found. The first in the list is considered
the master and all the others are deleted and replaced by NTFS
hardlinks. Probably safer to hardlink first to an alias, *then*
delete and then rename the alias, but I leave that up to you if
you want to use the script at all.

TJG

[1] http://timgolden.me.uk/python/downloads/find_duplicate_files.py


From brunovianarezende at gmail.com  Sat Oct  6 08:37:04 2007
From: brunovianarezende at gmail.com (Bruno Rezende)
Date: Sat, 06 Oct 2007 12:37:04 -0000
Subject: my Python lib is broken
In-Reply-To: <mailman.1609.1191673354.2658.python-list@python.org>
References: <1191672177.389263.185790@g4g2000hsf.googlegroups.com>
	<mailman.1609.1191673354.2658.python-list@python.org>
Message-ID: <1191674224.334287.159280@o3g2000hsb.googlegroups.com>

Thanks for the information! Indeed, I was geting an error when trying
to do:

from xml.dom import minidom

but it was because there is a xml.py file inside the same package, so
it happens a conflict...

On Oct 6, 9:22 am, "Guilherme Polo" <ggp... at gmail.com> wrote:
> 2007/10/6, Bruno Rezende <brunovianareze... at gmail.com>:
>
> > Hi,
>
> > I think I've broken my python installation (don't know how). All the
> > packages that are under 'lib' in python installation doesn't work the
> > way expected:
>
> > >>> import xml
> > >>> xml.dom
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in <module>
> > AttributeError: 'module' object has no attribute 'dom'
>
> This is not broken. It is how packages works.
> xml is a package, dom is a package inside xml. If you want to check
> the attributes that you get importing xml you do dir(xml)
>
> > but, if I import * from xml, it starts to work again:
>
> > >>> from xml import *
>
> Doing that will cause the __init__.py inside package xml to check its
> __all__ list and import them all, including dom
>
> > >>> xml.dom
> > <module 'xml.dom' from 'C:\Python25\Lib\xml\dom\__init__.pyc'>
>
> > Does someone know why is this happening? (I can reinstall my python
> > 2.5, but would like to know how the python lib got broken).
>
> This is hapenning because you have installed Python, congratulations =)
>
>
>
> > regards,
> > Bruno
>
> > --
> >http://mail.python.org/mailman/listinfo/python-list
>
> --
> -- Guilherme H. Polo Goncalves




From gregturn at mindspring.com  Thu Oct 11 16:08:15 2007
From: gregturn at mindspring.com (Goldfish)
Date: Thu, 11 Oct 2007 13:08:15 -0700
Subject: determining fully qualified package & class name
In-Reply-To: <5n78g6Fghr61U8@mid.uni-berlin.de>
References: <mailman.100.1192126718.927.python-list@python.org>
	<5n78g6Fghr61U8@mid.uni-berlin.de>
Message-ID: <1192133295.392180.213400@19g2000hsx.googlegroups.com>

import myPackage

f = myPackage.foo()

print f.__module__ + "." + f.__class__.__name__

That should do it!



From mail at microcorp.co.za  Thu Oct  4 03:43:49 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Thu, 4 Oct 2007 09:43:49 +0200
Subject: racism kontrol
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net><mailman.1481.1191444294.2658.python-list@python.org>
	<47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <017701c8065a$d284c900$03000080@hendrik>


 "Wildemar Wildenburger" <lasse....eso.net> wrote:

> (By the way: Accusing a German of racism is almost too easy an insult. 
> Not that I had taken any, just saying.)

I always thought that it would be insulting to a German if you accused
him or her of not being a racist...

- Hendrik



From nagle at animats.com  Tue Oct  2 11:00:19 2007
From: nagle at animats.com (John Nagle)
Date: Tue, 02 Oct 2007 15:00:19 GMT
Subject: Why doesn't Python's "robotparser" like Wikipedia's "robots.txt"
	file?
In-Reply-To: <fdsh5m$g8u$1@lust.ihug.co.nz>
References: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>
	<fdsh5m$g8u$1@lust.ihug.co.nz>
Message-ID: <72tMi.30611$eY.26756@newssvr13.news.prodigy.net>

Lawrence D'Oliveiro wrote:
> In message <HYiMi.9932$JD.6615 at newssvr21.news.prodigy.net>, John Nagle
> wrote:
> 
>>     For some reason, Python's parser for "robots.txt" files
>> doesn't like Wikipedia's "robots.txt" file:
>>
>>  >>> import robotparser
>>  >>> url = 'http://wikipedia.org/robots.txt'
>>  >>> chk = robotparser.RobotFileParser()
>>  >>> chk.set_url(url)
>>  >>> chk.read()
>>  >>> testurl = 'http://wikipedia.org'
>>  >>> chk.can_fetch('Mozilla', testurl)
>> False
>>  >>>
> 
>     >>> chk.errcode
>     403
> 
> Significant?
> 
    Helpful.  Also an undocumented feature.  See

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

					John Nagle


From nagle at animats.com  Wed Oct 31 11:26:06 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 31 Oct 2007 08:26:06 -0700
Subject: Python bug tracker now secret?
In-Reply-To: <mailman.687.1193842761.13605.python-list@python.org>
References: <mailman.687.1193842761.13605.python-list@python.org>
Message-ID: <47289e6e$0$14147$742ec2ed@news.sonic.net>

Jean-Paul Calderone wrote:
> On Wed, 31 Oct 2007 07:53:01 -0700, John Nagle <nagle at animats.com> wrote:
>> I'm now getting messages like this from the Python bug tracker on
>> SourceForge:
>>
>>  Artifact: This Artifact Has Been Made Private. Only Group Members Can
>>  View  Private ArtifactTypes.
>>
>> I'm being denied access to bug reports I submitted, such as
>>
>> https://sourceforge.net/tracker/?func=detail&aid=1651995&group_id=5470&atid=105470 
>>
>>
>> This is only happening for Python bugs; bugs in non-Python areas are 
>> still
>> accessable.  So it's not a general SourceForge bug.
>>
>> Is this a dumb policy change or a dumb administrator action?
>>
> 
> I don't know why they chose to make the sf tracker private.  Maybe that
> was the only way to remove write access.  Python bugs are now tracked
> at http://bugs.python.org/.
> 
> Jean-Paul

     There are bug reports in the SourceForge tracker that aren't in the
"bugs.python.org" tracker, so that move was botched.

					John Nagle


From chris.monsanto at gmail.com  Wed Oct 31 16:12:24 2007
From: chris.monsanto at gmail.com (Chris M)
Date: Wed, 31 Oct 2007 20:12:24 -0000
Subject: Namespace question
In-Reply-To: <mailman.677.1193839591.13605.python-list@python.org>
References: <mailman.677.1193839591.13605.python-list@python.org>
Message-ID: <1193861544.658554.30760@o38g2000hse.googlegroups.com>

On Oct 31, 10:06 am, Frank Aune <Frank.A... at broadpark.no> wrote:
> Hello,
>
> Is it possible writing custom modules named the same as modules in the
> standard library, which in turn use the same module from the standard
> library?
>
> Say I want my application to have a random.py module, which in turn must
> import the standard library random.py module also, to get hold of the randint
> function for example.
>
> My attempts so far only causes my random.py to import itself instead of the
> standard library random.py
>
> Receipt for disaster? :)
>
> Regards,
> Frank

Read up on absolute imports (In Python 2.5, from __future__ import
absolute_imports) is required. You can load your random.py with
import .random, which can import the standard lib with import random.



From rdm at rcblue.com  Fri Oct  5 08:21:38 2007
From: rdm at rcblue.com (Dick Moores)
Date: Fri, 05 Oct 2007 05:21:38 -0700
Subject: Where's the Starship's crew?
In-Reply-To: <fe58l1$4te$1@sea.gmane.org>
References: <20071005083806.61D811E4002@bag.python.org>
	<fe58l1$4te$1@sea.gmane.org>
Message-ID: <20071005122652.935DB1E4003@bag.python.org>

At 04:54 AM 10/5/2007, Thomas Heller wrote:
>Dick Moores schrieb:
> > <http://starship.python.net/crew/index.html>
> >
> > I didn't check on all of them, but the only one I found was Mark
> > Hammond <http://starship.python.net/crew/mhammond/>.
> >
> > Dick Moores
> >
>
>There are more. Think of it as a game you have to solve.

Yeah, a mind numbing game!

http://starship.python.net/crew/ewalstad/ Eric Walstad
http://starship.python.net/crew/piers/ Piers Lauder
http://starship.python.net/crew/jae/ --> http://zhar.net/  John Eikenberry
http://starship.python.net/crew/mwh/
http://starship.python.net/crew/manus/ Manus Hand
http://starship.python.net/crew/bhoel/ Berthold H?llmann
http://starship.python.net/crew/marduk/ ("Server Error")
http://starship.python.net/crew/schorsch/
http://starship.python.net/crew/dni/ David Niergarth
http://starship.python.net/crew/jcooley/ James Cooley
http://starship.python.net/crew/sdrees/ Stefan Drees
http://starship.python.net/crew/jwt/ Jim Tittsler
http://starship.python.net/crew/theller/ Thomas Heller
http://starship.python.net/crew/gherman/ Dinu Gherman
http://starship.python.net/crew/mhammond/ Mark Hammond
http://starship.python.net/crew/atuining/
http://starship.python.net/crew/hooft/ Rob W.W. Hooft
http://starship.python.net/crew/lemburg/ --> http://www.egenix.com/
http://starship.python.net/crew/goodger/ David Goodger
http://starship.python.net/crew/mmuller/ Mike Muller
http://starship.python.net/crew/skippy/ same as 
http://starship.python.net/crew/mhammond/ Mark Hammond

BTW How could I have done this with Python script?

Dick Moores



From zyzhu2000 at gmail.com  Wed Oct 24 11:38:30 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Wed, 24 Oct 2007 15:38:30 -0000
Subject: Speed of Nested Functions & Lambda Expressions
In-Reply-To: <Xns99D35A5451510duncanbooth@127.0.0.1>
References: <1193154050.424718.298030@i13g2000prf.googlegroups.com>
	<Xns99D35A5451510duncanbooth@127.0.0.1>
Message-ID: <1193240310.191260.212990@k35g2000prh.googlegroups.com>

On Oct 24, 2:52 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> beginner <zyzhu2... at gmail.com> wrote:
> > It is really convenient to use nested functions and lambda
> > expressions. What I'd like to know is if Python compiles fn_inner()
> > only once and change the binding of v every time fn_outer() is called
> > or if Python compile and generate a new function object every time. If
> > it is the latter, will there be a huge performance hit? Would someone
> > give some hint about how exactly Python does this internally?
>
> You can use Python's bytecode disassembler to see what actually gets
> executed here:
>
> >>> def fn_outer(v):
>
>     a=v*2
>     def fn_inner():
>         print "V:%d,%d" % (v,a)
>
>     fn_inner()
>
> >>> import dis
> >>> dis.dis(fn_outer)
>
>   2           0 LOAD_DEREF               1 (v)
>               3 LOAD_CONST               1 (2)
>               6 BINARY_MULTIPLY    
>               7 STORE_DEREF              0 (a)
>
>   3          10 LOAD_CLOSURE             0 (a)
>              13 LOAD_CLOSURE             1 (v)
>              16 BUILD_TUPLE              2
>              19 LOAD_CONST               2 (<code object fn_inner at
> 01177218, file "<pyshell#3>", line 3>)
>              22 MAKE_CLOSURE             0
>              25 STORE_FAST               1 (fn_inner)
>
>   6          28 LOAD_FAST                1 (fn_inner)
>              31 CALL_FUNCTION            0
>              34 POP_TOP            
>              35 LOAD_CONST               0 (None)
>              38 RETURN_VALUE        
>
>
>
> When you execute the 'def' statement, the two scoped variables a and v
> are built into a tuple on the stack, the compiled code object for the
> inner function is also pushed onto the stack and then the function is
> created by the 'MAKE_CLOSURE' instruction. This is then stored in a
> local variable (STORE_FAST) which is then loaded and called.
>
> So the function definition is pretty fast, BUT notice how fn_inner is
> referenced by STORE_FAST/LOAD_FAST whereas a and v are referenced by
> LOAD_DEREF/STORE_DEREF and LOAD_CLOSURE.
>
> The code for fn_inner also uses LOAD_DEREF to get at the scoped
> variables:
>
>   4           0 LOAD_CONST               1 ('V:%d,%d')
>               3 LOAD_DEREF               1 (v)
>               6 LOAD_DEREF               0 (a)
>               9 BUILD_TUPLE              2
>              12 BINARY_MODULO      
>              13 PRINT_ITEM          
>              14 PRINT_NEWLINE      
>              15 LOAD_CONST               0 (None)
>              18 RETURN_VALUE        
>
> (its a bit harder to disassemble that one, I stuck a call to dis.dis
> inside fn_outer to get that)
>
> If you do some timings you'll find that LOAD_DEREF/STORE_DEREF are
> rather slower than LOAD_FAST/STORE_FAST, so while the overhead for
> creating the function is minimal you could find that if you access the
> variables a lot (even in fn_outer) there may be a measurable slow-down.
>
> If timings show that it is a code hotspot then you might find it better
> to nest the function but pass any required values in as parameters (but
> if you don't have evidence for this just write whatever is clearest).


Thanks for the detailed analysis, Duncan. Also thanks for showing how
the disassembler can be used to figure this out. I was just looking
for a tool like this. This is great. Thanks again.



From sjmachin at lexicon.net  Tue Oct  9 17:18:38 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 07:18:38 +1000
Subject: Mixing Python and C classes in a module
In-Reply-To: <87wstwibfl.fsf@keizer.soze.com>
References: <87wstwibfl.fsf@keizer.soze.com>
Message-ID: <470bf032$1@news.eftel.com.au>

On 10/10/2007 12:56 AM, Stefan Arentz wrote:
> Is it possible to mix classes defined in both Python and C in the same
> module? Ideally I would like to be able to do:
> 
>  from some.module import MyPythonClass, MyCClass
> 
> I guess that would mean that this would look like this on disk:
> 
>  some/
>    __init__.py
>    module.py      (contains MyPythonClass)
>    module.so      (contains MyCClass)
> 

Alternative to other suggestions:

Instead of module.so, call it _module.so. Then down the end of module.py:

try:
     from _module import *
except ImportError:
     # either panic or shrug as appropriate

Note: the "shrug" response would be appropriate for the use case where 
"module" contains all necessary functionality, and the 
optionally-present "_module" contains replacement classes/types and/or 
functions that are better in some sense e.g. more memory/CPU efficient.

HTH,
John


From erik at myemma.com  Mon Oct 22 23:43:35 2007
From: erik at myemma.com (Erik Jones)
Date: Mon, 22 Oct 2007 22:43:35 -0500
Subject: Can't Write to PostGIS PostGreSQL database via psycopg2
In-Reply-To: <1193102391.608145.136960@k35g2000prh.googlegroups.com>
References: <1193102391.608145.136960@k35g2000prh.googlegroups.com>
Message-ID: <ADEA6898-C2D0-4BF6-B36C-91B6AE2BF9FC@myemma.com>


On Oct 22, 2007, at 8:19 PM, David Michael Schruth, wrote:

> Hi,
>
> I am sort of in a jam here.  I am using the PsycoPG2 library to read
> data out of a windows XP based PostGIS / PostGreSQL database but I am
> apparently unable to write (update or insert) even though I am able to
> read (select)
>
> I am using PsycoPG2 2.0.6 (psycopg2-2.0.6.win32-py2.5-pg8.2.4-
> release.exe )
> with Python 2.5 (python-2.5.msi)
> and PostGres 8.2.5.-1   (postgresql-8.2.5-1.zip)
> and PostGIS 8.2 (postgis-pg82-setup-1.3.1-1.exe)
>
> I can use PGadminIII to paste the same SQL queries and execute just
> fine, but when I try to execute them via python code like
>
> import psycopg2
> conn = psycopg2.connect("dbname='postgis' user='postgres'
> host='localhost' password='12345'")
> c=conn.cursor()
> c.execute("""INSERT INTO thetable (name) VALUES ('asdf');""")
> c.execute("""UPDATE thetable SET name = 'somename' WHERE id = 321;""")
> print(c.statusmessage)
> #returns "INSERT 0 1" and "UPDATE 0" respectively
>
> It gives me very specialized table specific error messages if the
> query is wrong, but when it's correct, it does nothing and doesn't
> update.   The only way I can update is pasting the query into the
> PgAdminIII query window.
>
> This is a problem on two separate machines (XP and Windows 2003
> server) with all of the above components installed by two different
> people.''

The return value of the insert of 'INSERT 0 1' indicates that one row  
was inserted so the insert certainly worked.  If you're not seeing  
the results when you look at the database after the script has run  
it's probably because you need to call conn.commit() after your  
execute statements in order to commit your transaction as psycopg  
does not, by default, run in "autocommit" mode.  The update's return  
value of 'UPDATE 0' indicates that the where condition of your update  
query did not, in fact, match any existing rows in your table.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From kyosohma at gmail.com  Fri Oct 19 11:26:30 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 19 Oct 2007 15:26:30 -0000
Subject: Please Help !!!
In-Reply-To: <mailman.200.1192778545.13605.python-list@python.org>
References: <mailman.200.1192778545.13605.python-list@python.org>
Message-ID: <1192807590.612544.303830@q3g2000prf.googlegroups.com>

On Oct 17, 4:32 am, Heiko Schlierkamp <hschlierk... at sense-of-
africa.com.na> wrote:
> I need to update the virus program every day with the new dat file from
> mcafee
> I would like to us a Bat file to go to the web page and download the dat
> file automatically to a specific Directory, that I have created, but my
> problem lays in that the bat file will open the file to be downloaded but
> the bat file does not confirm the save button so that it start to download
> the file, that I still need to do manual. Please advice me with what still
> need to be done!!
> Your help will be very appreciated!!!
>
> I have added the file so you can see what it does exactly!!
>
> > Heiko Schlierkamp
> > SENSE OF AFRICA - Namibia
> > E-mail: hschlierk... at sense-of-africa.com.na
> > Website:www.sense-of-africa.com
> > Tel: +264 61 275300
> > Fax: +264 61 263417
> > PO Box 2058, Windhoek, Namibia
>
>  <<Superdat.rar>>
>
>  Superdat.rar
> 1KDownload

Besides all the other answers, why not just have McAfee do it? Hello?
McAfee is a mature product that should auto-download and auto-update
itself, if set up properly.

Mike



From ldo at geek-central.gen.new_zealand  Fri Oct  5 00:43:57 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 17:43:57 +1300
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<1191370407.188678.86820@n39g2000hsh.googlegroups.com>
	<mailman.1463.1191425540.2658.python-list@python.org>
	<13g7itvdl8m3870@corp.supernews.com>
Message-ID: <fe4fed$ebo$2@lust.ihug.co.nz>

In message <13g7itvdl8m3870 at corp.supernews.com>, Grant Edwards wrote:

> You've got to admit that Tk "just works", although as a result
> it looks ugly and foreign on all platforms.

Sort of a "pidgin GUI". :)


From has.temp3 at virgin.net  Mon Oct 15 09:35:19 2007
From: has.temp3 at virgin.net (has)
Date: Mon, 15 Oct 2007 06:35:19 -0700
Subject: Python on imac
In-Reply-To: <03tQi.7629$fd2.4411@newsfe07.phx>
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<03tQi.7629$fd2.4411@newsfe07.phx>
Message-ID: <1192455319.920331.275650@k35g2000prh.googlegroups.com>

On 14 Oct, 19:19, John Velman <vel... at cox.net> wrote:
> Thanks to all.  I'll look into wx before I get too much further.

- For prebuilt binaries of the Python framework and various third-
party packages, including wxPython, see:

http://www.pythonmac.org/packages/py25-fat/index.html

(Note that some of the packages provided there may not be the very
latest versions, so you might want to check their respective sites as
well.)


- Also check out py2app for building standalone executables:

http://cheeseshop.python.org/pypi/py2app/
http://svn.pythonmac.org/py2app/py2app/trunk/doc/index.html


- If you're going to be writing Mac-only applications, you might want
to consider using PyObjC, which provides a two-way bridge between
Python and ObjC, giving you full access to OS X's Cocoa APIs:

http://pyobjc.sourceforge.net/


- The PythonMac-SIG mailing list is the main forum for Python-on-Mac
discussions:

http://mail.python.org/mailman/listinfo/pythonmac-sig


HTH

has
--
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org



From ptmcg at austin.rr.com  Fri Oct  5 11:02:41 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Fri, 05 Oct 2007 08:02:41 -0700
Subject: Boolean parser..
In-Reply-To: <1191528039.339381.47220@d55g2000hsg.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
	<1191528039.339381.47220@d55g2000hsg.googlegroups.com>
Message-ID: <1191596561.259263.98930@k79g2000hse.googlegroups.com>

On Oct 4, 3:00 pm, timar... at gmail.com wrote:
> On Oct 5, 7:29 am, Abandoned <best... at gmail.com> wrote:
>
> > Hi..
> > I try a boolean parser in python since 1 weak.. But i can't do this
> > because this is very complicated :(
> > Do you know any blooean parser script in python or how do i write a
> > boolean parser ?
> > example query: ((google or yahoo) or (live msn)) not web
> > I'm sorry my bad english.
> > King Regards..
>
> Try the pyparsing module (google it)
> They have several examples.

The pyparsing wiki has this online example:
http://pyparsing.wikispaces.com/space/showimage/searchparser.py.

-- Paul



From duncan.booth at invalid.invalid  Mon Oct  1 03:46:32 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 1 Oct 2007 07:46:32 GMT
Subject: question about for cycle
References: <1191079144.724699.250470@o80g2000hse.googlegroups.com>
	<mailman.1297.1191123212.2658.python-list@python.org>
Message-ID: <Xns99BC580F6A2FFduncanbooth@127.0.0.1>

"fdu.xiaojf at gmail.com" <fdu.xiaojf at gmail.com> wrote:

>>> Sometime it maybe a waste to generate all possible combinations of
>>> i,j first. 
>> 
>> It doesn't; read about generator expressions at
>> http://www.python.org/dev/peps/pep-0289/ 
>> 
>> George
>> 
> Thanks, I didn't realize that.
> 
> However, I still think labeled break and continue is a valuable
> feature, which is easier to understand and to use.
> 
Can you come up with a realistic example where you think a labelled break 
would be easier to understand and use? A concrete example would really help 
if you hope to persuade anyone that your way is better.

I find that Python's ability to extract the control part of a loop into a 
generator is an extremely powerful way to make loops much clearer for 
several reasons: you separate completely the 'what we are looping over', 
and 'when do we stop' from the 'what do we then do with each item'; also 
you have an opportunity to give the code controlling the loop a separate 
(and meaningful) name.


From bborcic at gmail.com  Tue Oct 30 07:43:09 2007
From: bborcic at gmail.com (Boris Borcic)
Date: Tue, 30 Oct 2007 12:43:09 +0100
Subject: Need some help...
In-Reply-To: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
References: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
Message-ID: <47271907$1_6@news.bluewin.ch>

hyozan.ux3 at gmail.com wrote:
> I want to create a program that I type in a word.
> 
> for example...
> 
> chaos
> 
> each letter equals a number....
> 
> A=1
> B=20
> 
>  and so on.
> 
> So Chaos would be
> 
> C=13 H=4 A=1 O=7 S=5
> 
> I want to then have those numbers
> 13+4+1+7+5 added together to be 30.
> 
> How can I do that?
> 
> Also, just curious, but, how could I then have the 3 and 0 added
> together to be 3?
> 
> Please help me out.
> 
> Thank you.....
> 

 >>> sum(dict(C=13,H=4,A=1,O=7,S=5)[_] for _ in 'CHAOS')
30
 >>> sum(eval(ch) for ch in str(_))
3


From mogmios at mlug.missouri.edu  Tue Oct  9 04:17:53 2007
From: mogmios at mlug.missouri.edu (Michael)
Date: Tue, 9 Oct 2007 02:17:53 -0600
Subject: picture filter
In-Reply-To: <5mn8klFegvqqU1@mid.uni-berlin.de>
References: <1191600265.590444.239110@57g2000hsv.googlegroups.com>
	<5mn8klFegvqqU1@mid.uni-berlin.de>
Message-ID: <58d0a7010710090117o6451157qcfa0d6a0a37eb645@mail.gmail.com>

You can do do some kinds of image filtering to get a good idea but it's a
lot of work and not a simple script you can throw together. I've tagged and
processed millions of photos through my system to train it and I'm still
constantly finding ways to improve it.

> hii my friends
> > ? want to a filter for porn picture
> > if you know , please help me :S:S
> > how  do ? separate porn form not porn
> > I don't want my web site porn;)
> > (my english bad I hope understant it. very very thans )
>
> If anybody know how to do that, he or she would immediatly become
> incredibly rich, selling this magic filter to concerned parents as well
> as eager porn enthusiasts, to help them filter away the noise or dirt,
> from their respective viewpoints that is of course...
>
> So - you're out of luck buddy. Nobody will be able to help you.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/7692d5e1/attachment.html>

From nick at craig-wood.com  Mon Oct  1 08:30:11 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 01 Oct 2007 07:30:11 -0500
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
Message-ID: <slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>

Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote:
>  And gmpy: http://www.aleax.it/gmpy.html

And a concrete example

  >>> from gmpy import mpq
  >>> mpq(1,3)+mpq(0.4)
  mpq(11,15)
  >>> mpq(1,3)+mpq(4,10)
  mpq(11,15)
  >>> mpq(1,3)+mpq(6,10)
  mpq(14,15)
  >>> mpq(1,3)+0.6
  mpq(14,15)
  >>> mpq(5,2)
  mpq(5,2)
  >>> mpq(1,3)*mpq(6,10)*mpq(4,10)+mpq(7,8)
  mpq(191,200)
  >>>  

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From R.Brodie at rl.ac.uk  Thu Oct 18 13:22:45 2007
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Thu, 18 Oct 2007 18:22:45 +0100
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
	<1192725702.690339.302300@q5g2000prf.googlegroups.com>
Message-ID: <ff84p5$mgp$1@south.jnrs.ja.net>


"Matimus" <mccredie at gmail.com> wrote in message 
news:1192725702.690339.302300 at q5g2000prf.googlegroups.com...

> I think several people have given you the correct answer, but for some
> reason you aren't getting it. Instead of saving the string
> representation of a dictionary to the database...

Mind you, if this were Jeopardy, "Store a binary pickle
of a denormalized table back in the database" would
be a tough one. 




From deets at nospam.web.de  Fri Oct 12 08:18:22 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 12 Oct 2007 14:18:22 +0200
Subject: Problem with MySQL cursor
References: <fel7m3$btq$03$1@news.t-online.com>
	<mailman.80.1192110138.927.python-list@python.org>
	<fenkru$i43$01$1@news.t-online.com>
Message-ID: <5n970eFgifhuU1@mid.uni-berlin.de>

Florian Lindner wrote:

> Carsten Haese wrote:
> 
>> On Thu, 2007-10-11 at 15:14 +0200, Florian Lindner wrote:
>>> Hello,
>>> I have a function that executes a SQL statement with MySQLdb:
>>> 
>>> def executeSQL(sql,  *args):
>>>     print sql % args
>>>     cursor = conn.cursor()
>>>     cursor.execute(sql, args)
>>>     cursor.close()
>>> 
>>> it's called like that:
>>> 
>>>     sql = "INSERT INTO %s (%s) VALUES (%s)"
>>>     executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)
>> 
>> You can't use parameter binding to substitute table names and column
>> names, or any other syntax element, into a query. You can only bind
>> parameters in places where a literal value would be allowed (more or
>> less, the real rules are more complicated, but this rule of thumb gets
>> you close enough). You have to construct the query string like this, for
>> example:
>> 
>> sql = "INSERT INTO "+DOMAIN_TABLE+"("+DOMAIN_FIELD+") VALUES (%s)"
>> executeSQL(sql, domainname)
> 
> Ok, I understand it and now it works, but why is limitation? Why can't I
> just the string interpolation in any playes and the cursor function
> escapes any strings so that they can't do harm to my query?

Because the function doesn't know that you wanted

select * from user where email = 'foo at bar'

instead of

select * from user where email = 'foo'; drop table user where '' = ''

And of course you don't gain anything from using USER INPUT in the
string-interpolation for creating the sql statement!!!

Diez


From grante at visi.com  Tue Oct  9 10:50:48 2007
From: grante at visi.com (Grant Edwards)
Date: Tue, 09 Oct 2007 14:50:48 -0000
Subject: Virtual filesystem in python ( Fuse or WebDav ? )
References: <1191932549.616430.285240@22g2000hsm.googlegroups.com>
Message-ID: <13gn5a8e5q0nkec@corp.supernews.com>

On 2007-10-09, Thomas W <thomas.weholt at gmail.com> wrote:

> I want to create a virtual filesystem based on a relational
> database. [...]

http://en.wikipedia.org/wiki/Filesystem_in_Userspace
http://fuse.sourceforge.net/

-- 
Grant Edwards                   grante             Yow! I'm a nuclear
                                  at               submarine under the
                               visi.com            polar ice cap and I need
                                                   a Kleenex!


From martin at v.loewis.de  Thu Oct 11 15:33:16 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 11 Oct 2007 21:33:16 +0200
Subject: Python SVN down?
In-Reply-To: <1192094652.913626.171650@v3g2000hsg.googlegroups.com>
References: <1192094652.913626.171650@v3g2000hsg.googlegroups.com>
Message-ID: <470E7A7C.90806@v.loewis.de>

> Are all the real  ( ;-) ) developers using ssh+svn and not noticing
> this?

As Terry said, some noticed. But yes, many use svn+ssh, plus we live
in different time zones, so we may be asleep when it breaks.

Regards,
Martin


From attackwarningred at yahoo.co.uk  Wed Oct 24 01:32:49 2007
From: attackwarningred at yahoo.co.uk (attackwarningred)
Date: Wed, 24 Oct 2007 06:32:49 +0100
Subject: Using arrays in Python - problems.
In-Reply-To: <ffm5rp$22j6$1@energise.enta.net>
References: <mailman.392.1193179875.13605.python-list@python.org>	<1193181270.396191.291130@i38g2000prf.googlegroups.com>
	<ffm5rp$22j6$1@energise.enta.net>
Message-ID: <471ED901.3020304@yahoo.co.uk>

Thanks very much to those who sent me a reply to my array problem! Its 
now working brilliantly!

Best wishes,
Gareth.

-- 


eclipsing.binary at virgin.net
attackwarningred at yahoo.co.uk

665.9238429876 - Number of the Pentium Beast


From aahz at pythoncraft.com  Mon Oct 15 11:40:34 2007
From: aahz at pythoncraft.com (Aahz)
Date: 15 Oct 2007 08:40:34 -0700
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com>
	<ocudnf2qE6P46JfanZ2dnUVZ_h-vnZ2d@comcast.com>
Message-ID: <ff01li$qp5$1@panix3.panix.com>

In article <ocudnf2qE6P46JfanZ2dnUVZ_h-vnZ2d at comcast.com>,
Steven Bethard  <steven.bethard at gmail.com> wrote:
>Aahz wrote:
>> In article <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d at comcast.com>,
>> Steven Bethard  <steven.bethard at gmail.com> wrote:
>>>
>>> You can use __slots__  [...]
>> 
>> Aaaugh!  Don't use __slots__!
>> 
>> Seriously, __slots__ are for wizards writing applications with huuuge
>> numbers of object instances (like, millions of instances).
>
>You clipped me saying that __slots__ are for performance tweaks:
>
>     You can use __slots__ to make objects consume less memory and have
>     slightly better attribute-access performance. Classes for objects
>     that need such performance tweaks should start like...
>
>I fully agree that __slots__ are for applications with huge numbers of 
>instances. But if you have that situation, you really do want to be 
>using __slots__.

Well, then, just make sure to put big honking warnings up whenever you
mention __slots__.  ;-)
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

The best way to get information on Usenet is not to ask a question, but
to post the wrong information.


From hat at se-162.se.wtb.tue.nl  Tue Oct 23 09:52:46 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Tue, 23 Oct 2007 15:52:46 +0200
Subject: Set operations on object attributes question
References: <1193147226.862501.97240@v23g2000prn.googlegroups.com>
Message-ID: <slrnfhrv5e.nn5.hat@se-162.se.wtb.tue.nl>

On 2007-10-23, TheSeeker <duane.kaufman at gmail.com> wrote:
> Hi,
>
> I have run into something I would like to do, but am not sure how to
> code it up. I would like to perform 'set-like' operations (union,
> intersection, etc) on a set of objects, but have the set operations
> based on an attribute of the object, rather than the whole object.
>
> For instance, say I have (pseudo-code):
>
> LoTuples1 = [(1,1,0),(1,2,1),(1,3,3)]
> Set1=set(LoTuples1)
> LoTuples2 = [(2,1,3),(2,2,4),(2,3,2)]
> Set2=set(LoTuples2)
>
> What I would like to be able to do is:
>
> Set3 = Set1union(Set2)
> Set3.intersection(Set2, <use object[2]>)
>
> to return:
> set([(2,1,3), (1,3,3)])
>
> How can one do this operation?

Put your data in a class, and implement __hash__ and __eq__
Finally, put your objects in sets.

Albert



From korovev76 at gmail.com  Fri Oct 26 15:58:39 2007
From: korovev76 at gmail.com (korovev76 at gmail.com)
Date: Fri, 26 Oct 2007 12:58:39 -0700
Subject: tuples within tuples
In-Reply-To: <13i48kmfbjstm53@corp.supernews.com>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
	<5oe73cFmh2htU1@mid.uni-berlin.de>
	<1193407191.002389.17680@v3g2000hsg.googlegroups.com>
	<13i48kmfbjstm53@corp.supernews.com>
Message-ID: <1193428719.253120.207320@22g2000hsm.googlegroups.com>

On 26 Ott, 19:23, Dennis Lee Bieber <wlfr... at ix.netcom.com> wrote:
 > > (A,B,C,D)
> > that could be
> > ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)
>
>         "C" isn't a tuple in your example either. It is a one-element list
> (the single element INSIDE the list is a tuple whose third element is a
> list containing a non-terminated string -- so the entire structure is
> invalid)
>

i'm not sure what u mean with "the entire structure is invalid"...
that's exactly what I got while parsing...




From duncan.booth at invalid.invalid  Mon Oct 29 14:45:22 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 Oct 2007 18:45:22 GMT
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<Xns99D893230B22Cduncanbooth@127.0.0.1>
	<mailman.597.1193681389.13605.python-list@python.org>
Message-ID: <Xns99D8BEA87A5Aduncanbooth@127.0.0.1>

"J. Clifford Dyer" <jcd at sdf.lonestar.org> wrote:

>> I think you are being a little bit unfair here: help(len) says:
>> 
>> len(...)
>>     len(object) -> integer
>>     
>>     Return the number of items of a sequence or mapping.
>> 
>> which implies that the argument to len has the name 'object'
>> (although in fact it doesn't have a name). The OP was simply asking
>> about the difference in calling conventions, not proposing to write
>> code using 'object' as the argument name.
> 
> Hmm....  To my mind, that just implies that the *type* of the expected
> input is an object.  Just like the "-> integer" tells you that the
> type of the output is an integer.  If the documentation read
> "len(s=object) -> integer", then I would expect a keyword argument s
> typed as an object. 
> 

How do you interpret:

>>> help(__import__)
Help on built-in function __import__ in module __builtin__:

__import__(...)
    __import__(name, globals={}, locals={}, fromlist=[], level=-1) -> 
module
...
>>> help(int)
Help on class int in module __builtin__:

class int(object)
 |  int(x[, base]) -> integer
...

Can you find any case (other than a single parameter identified as 
'object') where you can interpret the help string as telling you the types 
of the parameters?


From rosreddee at gmail.com  Wed Oct 31 06:53:47 2007
From: rosreddee at gmail.com (rosreddee at gmail.com)
Date: Wed, 31 Oct 2007 10:53:47 -0000
Subject: ###FREE  SEX  #STILL FREE##WORLD SEX FREE###
Message-ID: <1193828027.915970.216310@v29g2000prd.googlegroups.com>




###SEX LIVE  SHOW  FREE INDIAN SEX ####



LISPINA  SEX GARLS SEX  FREEE


##TO NIGHT  SEX  IN LIVE FREE##


   http://gopitty.googlepages.com/



From deets at nospam.web.de  Wed Oct 10 18:21:10 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 00:21:10 +0200
Subject: RMI with Pyro et al
In-Reply-To: <mailman.48.1192050733.927.python-list@python.org>
References: <mailman.48.1192050733.927.python-list@python.org>
Message-ID: <5n51ipFg7ceoU1@mid.uni-berlin.de>

Sells, Fred schrieb:
> I need a simple client/server architecture with clients on linux and servers on windows.  There is no UI in this part, just business rules and access control.
> 
> Pyro seems pretty cool for this due to it's simplicity.  I'm just starting with it and have not been able to get the server side to "see" changes to a module.  The only way I can stop the server is with the Task Manager.  Can anyone offer some insight into
> 1. stopping/starting the server - perhaps as a windows service.
> 2. getting the server to recognize new modules "on the fly", i.e. when the .py file is changed.

That can be done, but isn't supported out-of-the-box. Essentially, you 
have to create a watch-thread that checks timestamps on python-files and 
then restarts some service if some change.

However, it might be difficult to make that play nicely with pyro - 
after all, it stores some state, reloading stuff makes that go away.

So - I wouldn't advice to really implement that. Why do you want that 
anyway? Does startuptime of a script really bother you? shouldn't take 
more than a few seconds.

Diez


From timr at probo.com  Wed Oct 31 03:06:59 2007
From: timr at probo.com (Tim Roberts)
Date: Wed, 31 Oct 2007 07:06:59 GMT
Subject: why did these companies choose Tcl over Python
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <t3agi3t7seui235qfccdtre4c9dnpo5q76@4ax.com>

chewie54 <dfabrizio51 at gmail.com> wrote:
>
>As an electronics engineer I use some very expensive EDA CAD tool
>programs that are scriptable using Tcl.  I was wondering why these
>companies have choose to use Tcl instead of Python.   Some of these
>are:
>
>   Mentor Graphics ModelTech VHDL and Verilog simulator
>   Synopsys  Design Compiler and Primetime Static Timing Analyzer
>   Actel FPGA tools.

Well, I recently did a development contract for Mentor, and the RFQ gave me
the choice of doing the library binding and diagnostic GUI in either Tcl or
Python.  Naturally, I chose Python (and wxPython), and both the client and
I are quite happy with the result.

(Actually, I did a Tcl binding for them as well, and just writing the text
scripts reinforced my dislike for it...)
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From sgeiger at ncee.net  Tue Oct 16 10:17:41 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Tue, 16 Oct 2007 09:17:41 -0500
Subject: confused on calculating date difference in days.
In-Reply-To: <f81479dd0710160651x11f2d529qcf1ef64663128aaa@mail.gmail.com>
References: <mailman.49.1192518819.13605.python-list@python.org>	<5nj8b8FiilfrU3@mid.uni-berlin.de>
	<87odez4gz5.fsf@benfinney.id.au>	<5njb0uFiilfrU4@mid.uni-berlin.de>
	<f81479dd0710160651x11f2d529qcf1ef64663128aaa@mail.gmail.com>
Message-ID: <4714C805.2080903@ncee.net>

# Example

import datetime
def days_old(birth_year=1974,birth_month=12,birth_day=7):
    return (datetime.date.today() -
datetime.date(birth_year,birth_month,birth_day) ).days

>>> days_old()
12000



krishnakant Mane wrote:
> hello,
> thanks all of you for providing valuable help.
> right now I am confused about the delta object.
> how can I extract the difference between two dates in terms of day
> using the delta object?
> I tried reading the python docs but did not understand the concept of
> delta object and how can I measure the difference in terms of days
> between two dates.
> I expect that the days would be integers.
> secondly the format of my date is actually "16/10/2007", and this is
> all in varchar field inside a postgresql database.
> I understand that datetime.datetime.strptime would convert this string
> "16/10/2007" into a date object which I can then compare with the
> current date created by datetime.now().
> is that right?
> if yes then please explain me how I can get the delta object to give
> me results in days.
> regards,
> Krishnakant.
>   

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

-------------- next part --------------
A non-text attachment was scrubbed...
Name: sgeiger.vcf
Type: text/x-vcard
Size: 310 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/9d477366/attachment.vcf>

From gandalf at shopzeus.com  Wed Oct  3 10:40:14 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Wed, 03 Oct 2007 16:40:14 +0200
Subject: gdbm objects not iterable?
In-Reply-To: <fe07ph$6a0$1@sea.gmane.org>
References: <47039B0B.7080301@shopzeus.com> <fe07ph$6a0$1@sea.gmane.org>
Message-ID: <4703A9CE.3030608@shopzeus.com>


>>
>> I know that this is a very small change, but it can make gdbm objects 
>> look more like dictionaries.
>>
>> Please make comments. :-)
>>
>>     
> What you would need is a method to *create and return* a generator, and 
> it's the generator that should have the next() method. Otherwise you 
> can't have two independent iterations over the same gdbm object (and you 
> don't have a way of ensuring iteration starts at the beginning).
>   
Yes, of course, you are right. I should have returned a newly created 
generator. Still I wonder why we do not have this? Would it be a good 
idea to make gdbm objects iterable by default?

Thanks,

   Laszlo



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct  1 11:11:47 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 17:11:47 +0200
Subject: How popular is Django ?
In-Reply-To: <5mcb9jFcotijU2@mid.uni-berlin.de>
References: <1191245034.626711.306380@19g2000hsx.googlegroups.com>
	<5mcb9jFcotijU2@mid.uni-berlin.de>
Message-ID: <47010e31$0$7777$426a74cc@news.free.fr>

Diez B. Roggisch a ?crit :
>  seb.haase at gmail.com wrote:
> 
>> Hi!
>>
>> I was surprised when I did a google-groups search for python,
>> (
>> http://groups.google.com/groups/search?q=python&qt_s=Search+Groups
>> )
>> it shows these groups:
>> comp.lang.python  with about 11000 users,
>> and second,
>> Django users
>> Discussion group for Django users. Django is a high-level Python
>> Web ...
>>
>> with 6500 members !!!!
>>
>> I cannot believe that django is *that* popular ... where am I going
>> wrong ?
> 
> By assuming that readers of this group (or ML) are a superset of the
> django-users. 

And by assuming that the (estimated AFAICT) number of c.l.py readers is 
representative of the number of Python users...

But Django *is* popular indeed.


From 3wbl at qlink.queensu.ca  Thu Oct 25 13:37:01 2007
From: 3wbl at qlink.queensu.ca (Brent Lievers)
Date: 25 Oct 2007 17:37:01 GMT
Subject: print vs sys.stdout.write, and UnicodeError
Message-ID: <ffqk7t$jm2$1@knot.queensu.ca>

Greetings,

I have observed the following (python 2.5.1):

>>> import sys
>>> print sys.stdout.encoding
UTF-8
>>> print(u'\u00e9')
??
>>> sys.stdout.write(u'\u00e9\n')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in 
position 0: ordinal not in range(128)

Is this correct?  My understanding is that print ultimately calls 
sys.stdout.write anyway, so I'm confused as to why the Unicode error 
occurs in the second case.  Can someone explain?

Thanks,

Brent


From jstroud at mbi.ucla.edu  Fri Oct 12 18:57:54 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 12 Oct 2007 15:57:54 -0700
Subject: decorating container types (Python 2.4)
In-Reply-To: <1192148551.690908.111090@q5g2000prf.googlegroups.com>
References: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
	<femava$i4b$1@daisy.noc.ucla.edu>
	<1192148551.690908.111090@q5g2000prf.googlegroups.com>
Message-ID: <feou3o$hkf$1@daisy.noc.ucla.edu>

I was thinking that only one longmeta is really needed and its not 
necessary to make a new metaclass at each go:

from types import MethodType

class longmeta(type):
   def __new__(cls, *args, **kwargs):
     if len(args) == 2:
       newcls = type.__new__(cls, args[1], (), {})
       len_func = args[0].__len__.im_func
       newcls.len_dlgt = MethodType(len_func, newcls, cls)
       return newcls
     else:
       return type.__new__(cls, *args, **kwargs)
   def __len__(cls):
     return cls.len_dlgt()


E.g.:

py> from types import MethodType
py>
py> class longmeta(type):
...   def __new__(cls, *args, **kwargs):
...     if len(args) == 2:
...       newcls = type.__new__(cls, args[1], (), {})
...       len_func = args[0].__len__.im_func
...       newcls.len_dlgt = MethodType(len_func, newcls, cls)
...       return newcls
...     else:
...       return type.__new__(cls, *args, **kwargs)
...   def __len__(cls):
...     return cls.len_dlgt()
...
py> class A(object):
...   value = 5
...   def __len__(self):
...     return A.value
...
py> a = A()
py> len(a)
5
py> B = longmeta(A, 'B')
py> len(B)
5
py> A.value = 16
py> len(B)
16
py> class C(B): pass
...
py> len(C)
16
py> A.value = 42
py> len(C)
42

James

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

http://www.jamesstroud.com


From Eric_Dexter at msn.com  Tue Oct  9 04:07:07 2007
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: Tue, 09 Oct 2007 01:07:07 -0700
Subject: embedding python..
In-Reply-To: <mailman.1618.1191730024.2658.python-list@python.org>
References: <1191627640.676114.319430@22g2000hsm.googlegroups.com>
	<mailman.1618.1191730024.2658.python-list@python.org>
Message-ID: <1191917227.061034.96610@o3g2000hsb.googlegroups.com>

That sounds to easy I will give it a shot..

On Oct 6, 11:08 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Fri, 05 Oct 2007 20:40:40 -0300, Eric_Dex... at msn.com  
> <Eric_Dex... at msn.com> escribi?:
>
> >      I compiled the c program that is supposed to allow you to call a
> > procedure from the command line promt..  (it is from the embeding
> > example)..  I am a little confused as to what all I am supposed to
> > distribute to make it work..  Do I just need the python .dll for the
> > version I compiled or is it working with the installed version of
> > python.. (I don't want to start deleting stuff to find out)..  Any
> > help on this question would be apreaceated..
>
> If you only provide pythonXX.dll (and probably msvcr71.dll), any Python  
> code that tries to import any module apart from builtin modules will fail.  
> If you provide the Python standard library in full, almost any program  
> could be run.
> It's up to you to decide how much you require/allow/want to provide.
>
> --
> Gabriel Genellina




From kay.schluehr at gmx.net  Thu Oct 11 02:11:08 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Wed, 10 Oct 2007 23:11:08 -0700
Subject: Duck Typing and **kwds
In-Reply-To: <mailman.67.1192076676.927.python-list@python.org>
References: <mailman.67.1192076676.927.python-list@python.org>
Message-ID: <1192083068.540363.252000@57g2000hsv.googlegroups.com>

On 11 Okt., 06:05, Luis Zarrabeitia <ky... at uh.cu> wrote:

> Is that behavior expected? Is there any reason (performance, perhaps?) to break
> duck-typing in this situation?

I guess it wasn't considered to be relevant writing a coercion
function since there aren't too many dict like types that are not
dicts. You can examine what happens in the relevant code fragment in
ceval.c

    if (flags & CALL_FLAG_KW) {
        kwdict = EXT_POP(*pp_stack);
        if (!(kwdict && PyDict_Check(kwdict))) {
            PyErr_Format(PyExc_TypeError,
                     "%s%s argument after ** "
                     "must be a dictionary",
                     PyEval_GetFuncName(func),
                     PyEval_GetFuncDesc(func));
            goto ext_call_fail;
        }
    }
    if (flags & CALL_FLAG_VAR) {
        stararg = EXT_POP(*pp_stack);
        if (!PyTuple_Check(stararg)) {
            PyObject *t = NULL;
            t = PySequence_Tuple(stararg);
            if (t == NULL) {
                if (PyErr_ExceptionMatches(PyExc_TypeError)) {
                    PyErr_Format(PyExc_TypeError,
                             "%s%s argument after * "
                             "must be a sequence",
                             PyEval_GetFuncName(func),
                             PyEval_GetFuncDesc(func));
                }
                goto ext_call_fail;


I paralleled this with the subsequent clause for tuples where some
coercion function is applied ( PySequence_Tuple ).

It would be cleaner to implement a simple conversion function
PyDictlike_Dict

which seeks for a __dictionary__ method providing the following
interface

__dictionary__(self) -> dict

and is called when being available. Maybe you can suggest this at
python-dev? It might not require a PEP.



From arkanes at gmail.com  Thu Oct 25 12:12:22 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 25 Oct 2007 11:12:22 -0500
Subject: about functions question
In-Reply-To: <slrnfi1b8f.16s.horpner@FIAD06.norwich.edu>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
	<1193314722.985517.252220@d55g2000hsg.googlegroups.com>
	<47209ba3$0$4804$426a74cc@news.free.fr>
	<slrnfi1b8f.16s.horpner@FIAD06.norwich.edu>
Message-ID: <4866bea60710250912g435361c9hd85103de8fbfe9f4@mail.gmail.com>

On 10/25/07, Neil Cerutti <horpner at yahoo.com> wrote:
> On 2007-10-25, Bruno Desthuilliers
> <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
> > The canonical case for small scripts is to have first all
> > functions and globals defined, then the main code protected by
> > a guard, ie:
>
> There's no reason to "protect" your main code in a small script.
>

There's also not much reason not to, and it prevents disaster or at
least unwanted side effects when you accidentally run pychecker or
pydoc over it.

Also, debugging scripts is a lot easier when you can import them into a shell.

> > if __name__ == '__main__':
> >    print SOME_CONST
> >    if not do_something():
> >      try_somethin_else()
>
> That idiom is useful in modules for launching tests or examples
> that should not be run when the module is imported.
>

I use it whenever there's any code I don't want run unless I'm
explicitly trying to do so.


From mccredie at gmail.com  Mon Oct 29 19:15:15 2007
From: mccredie at gmail.com (Matimus)
Date: Mon, 29 Oct 2007 23:15:15 -0000
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <1193699715.567745.101340@e9g2000prf.googlegroups.com>

On Oct 29, 3:57 pm, GHZ <geraint.willi... at gmail.com> wrote:
> Is this the best way to test every item in a list?
>
> def alltrue(f,l):
>     return reduce(bool.__and__,map(f,l))
>
> def onetrue(f,l):
>     return reduce(bool.__or__,map(f,l))
>
>
>
> >>> alltrue(lambda x:x>1,[1,2,3])
> False
>
> >>> alltrue(lambda x:x>=1,[1,2,3])
> True
>
> Thanks

If you are using python 2.5 the best way would be something like this:
>>> all(x > 1 for x in [1,2,3])
False
>>> any(x > 1 for x in [1,2,3])
True

If you are using an earlier version you are still discouraged from
using reduce in place of a more readable construct. In most cases list
comprehension is encouraged over map also.

If `all' and `any' aren't defined you can use something like the
following. One advantage of these over what you posted is that they
will return as soon as an exit condition is reached as opposed to
processing the entire list.
[code]
if not all:
 def all(seq):
  for val in seq:
   if not val:
    return False
  return True

if not any:
 def any(seq):
  for val in seq:
   if val:
    return True
  return False
[/code]

Matt



From odalrick at hotmail.com  Sat Oct 20 10:46:30 2007
From: odalrick at hotmail.com (Odalrick)
Date: Sat, 20 Oct 2007 07:46:30 -0700
Subject: weakref pitfall
In-Reply-To: <1192890068.447688.129180@y27g2000pre.googlegroups.com>
References: <1192888078.740427.222640@t8g2000prg.googlegroups.com>
	<1192890068.447688.129180@y27g2000pre.googlegroups.com>
Message-ID: <1192891590.794386.211150@v23g2000prn.googlegroups.com>

On 20 Okt, 16:21, Paul Hankin <paul.han... at gmail.com> wrote:

> The next stage in debugging is to think of a test that will prove your
> guess right or wrong. I'd remove weakrefs from your event manager and
> see if your code starts working.
>
> I'd suggest you're a bit confused about your event manager's API: you
> have register/deregister methods and are also using weakrefs to
> provide auto-deregistering. I don't know your code, but this looks
> like a mistake to me - can you justify (to yourself) that you need
> both ways?
>
> --
> Paul Hankin

Yes, I did a test with a standard dict and that removed the bug,
should have mentioned that.

And, no, I'm not sure I need both. Currently I'm using the standard
dict.

I'm fairly sure I'll need to manually deregister sometimes, buttons
and whatnot, but automatic deregistration sounds nice for later when
I'll have hundreds of sprites flying around.




From larry.bates at websafe.com  Fri Oct 19 15:03:15 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 19 Oct 2007 14:03:15 -0500
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
In-Reply-To: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
References: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
Message-ID: <9IGdnZxjQcTzYoXanZ2dnUVZ_tfinZ2d@comcast.com>

xkenneth wrote:
> All,
> 
>    Just a quick question. I want to be able to have a data structure
> that organizes data (timestamps I'm working with) sequentially, so
> that i can easily retrieve the first x amount of timeStamps without
> iterating over a list. My thought was to use a binary tree, am i
> overthinking the problem to try and implement this structure inside of
> python? I was also hoping this would already be done for me.
> 
> Regards,
> Ken
> 
Sounds a little like premature optimization here.  It depends on how many 
timestamps you are talking about.  Certainly if you have a lot (millions),
you should implement binary search, but I would write code first and if it is 
too slow, fix that part.

-Larry


From kw at codebykevin.com  Fri Oct  5 08:10:57 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Fri, 05 Oct 2007 08:10:57 -0400
Subject: tkinter question
In-Reply-To: <op.tzpugxp2wepdt4@ericb.pragmadev>
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
	<op.tzpugxp2wepdt4@ericb.pragmadev>
Message-ID: <470629D1.2040404@codebykevin.com>

Eric Brunel wrote:

> 
> BTW, even for something that simple, using the grid geometry manager may 
> be easier... It is at least easier to explain: don't ask me what the 
> expand=1 option means, I never understood it... I just add or remove it 
> when the pack doesn't do what I want. The sticky option with grid is 
> easier to handle.
> 

"expand = 1" ==  "expand=TRUE"--that means the widget resizes itself 
when the window is re-sized.


-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From jimmy.musselwhite at gmail.com  Fri Oct 26 20:07:34 2007
From: jimmy.musselwhite at gmail.com (jimmy.musselwhite at gmail.com)
Date: Fri, 26 Oct 2007 17:07:34 -0700
Subject: Going past the float size limits?
In-Reply-To: <mailman.493.1193443422.13605.python-list@python.org>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
	<mailman.493.1193443422.13605.python-list@python.org>
Message-ID: <1193443654.528953.33610@y42g2000hsy.googlegroups.com>

On Oct 26, 8:03 pm, St?phane Larouche <stephane.larou... at polymtl.ca>
wrote:
>  <jimmy.musselwhite <at> gmail.com> writes:
>
> > The calculation looks like this
>
> > A = 0.35
> > T = 0.30
> > C = 0.25
> > G = 0.10
>
> > and then I basically continually multiply those numbers together. I
> > need to do it like 200,000+ times but that's nuts. I can't even do it
> > 1000 times or the number rounds off to 0.0. I tried taking the inverse
> > of these numbers as I go but then it just shoots up to "inf".
>
> I suggest you add the logarithm of those numbers.
>
> St?phane

Well I'd add the logarithms if it was me that made the algorithm. I
don't think I understand it all that well. My professor wrote it out
and I don't want to veer away and add the logs of the values because I
don't know if that's the same thing or not.



From orsenthil at gmail.com  Mon Oct 22 04:10:34 2007
From: orsenthil at gmail.com (Phoe6)
Date: Mon, 22 Oct 2007 01:10:34 -0700
Subject: package import question
Message-ID: <1193040634.402343.127660@y27g2000pre.googlegroups.com>

Hi all,
I have the following directory structure:

wallpaper/
              -main.py
              -ng/
                 -- __init__.py
                 -- setdesktop.py
              -yb/
                 -- __init__.py
                 -- setdesktop.py

>From main.py, I would like to do:
import ng
import yb
ng.setdesktop.run()
yb.setdesktop.run()

But it is not working! when I import the package, the modules present
inside the package are getting imported.

However, following the python document if I do
import ng.setdesktop
import yb.setdesktop

ng.setdesktop.run()
yb.setdesktop.run()
Works fine.

I would like to use the notation.
import <my_package_name>
and use the modules inside the package in the dotted module notation.
What should I do the enable such a kind of imports.

Please let me know.

Thank you.
Senthil



From bignose+hates-spam at benfinney.id.au  Tue Oct 16 05:14:57 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 19:14:57 +1000
Subject: Python's coming... from unexpected angles.
References: <5njcjpFil587U1@mid.uni-berlin.de>
Message-ID: <87fy0b4e0e.fsf@benfinney.id.au>

"Diez B. Roggisch" <deets at nospam.web.de> writes:

> Just found this:

The direct link to the article is
<URL:http://www.boingboing.net/2007/10/16/french-lady-finds-py.html>.

> I do believe that Python should be somewhat more upfront to brandish
> it's merits - but then, sneaky ways are ok with me to...

Well, it seems like she's an early adopter: she's eager to use PyPy
all the time (though she has aliased it to 'pipi').

-- 
 \         "Pinky, are you pondering what I'm pondering?" "I think so, |
  `\     Brain, but what kind of rides do they have in Fabioland?"  -- |
_o__)                                            _Pinky and The Brain_ |
Ben Finney


From vasan999 at hotmail.com  Mon Oct 15 13:58:00 2007
From: vasan999 at hotmail.com (vasan999 at hotmail.com)
Date: Mon, 15 Oct 2007 17:58:00 -0000
Subject: Desperately need help for html to LaTeX conversion
Message-ID: <1192471080.796928.230030@k35g2000prh.googlegroups.com>

Because my previous thread had no reply that could help
me, I start it again.

I am very depressed now with the following problem.

I have a set of html files, must be human readable (as some of the
output tools produce human readable LaTeX)

that I want to convert to human readable latex.

The program by
http://in.geocities.com/ad_rab/

produces human unreadable tex. and i could not see the compiled
resulting dvi.

The gnu program produces human readable latex, but does not handle all
the tags.

the C program by Faase ??? produces human readable latex but misses a
few tags.

The C program is unreadable by me so I cant modify it.

On sourceforge there are two programs one in Perl and the other in
Java.

The perl one does not run due to path problems.

The java one produces complicated latex, possibly human readable, but
that does not compile so I could not see its quality.

Does someone have a program? I prefer a well documented and fully
commented program that one can modify or one that can do the job
without the need for understanding its operation.

Please help. The situation is very desperate.

Vasantha

Is there a html-merging tool that can merge a set of html files into a
single html file and resolve the links and cross-references with
minimal changes to the rest of the portions of the html, ie not
scramble the rest of the file.

I know some awk/perl/sed/python will do it.



From jcb at iteris.com  Fri Oct 19 16:15:56 2007
From: jcb at iteris.com (Metalone)
Date: Fri, 19 Oct 2007 13:15:56 -0700
Subject: Is there a way to tell if a script has been run by Pythonw.exe
	instead of Python.exe?
In-Reply-To: <1192788028.503824.52800@i13g2000prf.googlegroups.com>
References: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
	<1192788028.503824.52800@i13g2000prf.googlegroups.com>
Message-ID: <1192824956.933289.23100@z24g2000prh.googlegroups.com>

Thanks to all, I learned something in each post.
When using py2exe to build an executable sys.executable does not
provide the name of the python interpreter but the name of the
executable generated by py2exe.



From kf9150 at gmail.com  Thu Oct  4 14:34:41 2007
From: kf9150 at gmail.com (Kelie)
Date: Thu, 04 Oct 2007 11:34:41 -0700
Subject: using regular express to analyze lisp code
In-Reply-To: <1191518939.509584.316690@19g2000hsx.googlegroups.com>
References: <1191518039.676797.290620@22g2000hsm.googlegroups.com>
	<1191518939.509584.316690@19g2000hsx.googlegroups.com>
Message-ID: <1191522881.700796.83420@k79g2000hse.googlegroups.com>

On Oct 4, 7:28 am, Dan <thermos... at gmail.com> wrote:
> So, paren matching is a canonical context-sensitive algorithm. Now,
> many regex libraries have *some* not-purely-regular features, but I
> doubt your going to find anything to match parens in a single regex.
> If you want to go all out you can use a parser generator (for python
> parser generators, seehttp://python.fyxm.net/topics/parsing.html).
> Otherwise, you can go about it the quick-and-dirty way you describe:
> scan for matching open and close parens, and ignore things in quotes
> and comments.
>
> -Dan

Dan, thanks for suggesting parser generators.



From jcd at sdf.lonestar.org  Tue Oct 16 21:47:29 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Tue, 16 Oct 2007 21:47:29 -0400
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <47156519.2090905@twcny.rr.com>
References: <47156519.2090905@twcny.rr.com>
Message-ID: <471569B1.7010504@sdf.lonestar.org>

Dick Crepeau wrote:
> It seems to me the original question was how can I reply to a posted 
> message.
>
> I'm new here and see that while there are replies to several messages, 
> many times, like with this note, the issue is brought up as if it is new.
>
> I don't know how to do a reply, can someone tell me how?  This note was 
> sent to: python-list at python.org with the subject copied from an earlier 
> note.
>
> No need to discuss the politics of the choice.
>
> Dick C
>
>
>
>   
With thunderbird, I do "reply all," which has the ugly side effect that
the poster of the message I'm responding to gets 2 copies, unless I
remember to delete one of them.

Same method with mutt, though I'm sure I could customize mutt to pay
better attention to the headers, if I used it enough to bother.

Cheers,
Cliff


From sjmachin at lexicon.net  Mon Oct  1 20:50:34 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 01 Oct 2007 17:50:34 -0700
Subject: slice last 4 items from a list
In-Reply-To: <fdrl81$13c$1@solaris.cc.vt.edu>
References: <fdrl81$13c$1@solaris.cc.vt.edu>
Message-ID: <1191286234.855980.118170@g4g2000hsf.googlegroups.com>

On Oct 2, 6:27 am, brad <byte8b... at gmail.com> wrote:
> Is this the correct way to slice the last 4 items from a list?
>
> x = [1,2,3,4,5,6,7,8,9]
> print x[-4:]
>
> It works, but is it Pythonic?

It's Pythonic. It's also unambiguous, unlike your specification, which
could be interpreted as 'chop off the last 4 items from a list' i.e.
del x[-4:]. What you are actually doing is 'print the last 4 items of
a list'.



From steve at REMOVE-THIS-cybersource.com.au  Tue Oct  9 18:53:46 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 09 Oct 2007 22:53:46 -0000
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
Message-ID: <13go1jqli5up5d1@corp.supernews.com>

On Tue, 09 Oct 2007 22:27:47 +0200, Diez B. Roggisch wrote:

> Steven D'Aprano schrieb:
>> On Tue, 09 Oct 2007 19:23:37 +0200, Diez B. Roggisch wrote:
>> 
>>> Your believes aside, this is simply wrong. The statement
>>>
>>> a += x
>>>
>>> always leads to a rebinding of a to the result of the operation +.
>> 
>> Not true.
> 
> 
> Yes, it is.

I'm afraid not.

As I admitted in my reply to Marc, I overstated my case by saying that L 
isn't rebound at all. Of course it is rebound, but to itself.

However, it is not true that += "always leads to a rebinding of a to the 
result of the operation +". The + operator for lists creates a new list. 
+= for lists does an in-place modification:

>>> L = []
>>> M = L
>>> L += [1]
>>> M
[1]

Compare with:

>>> L = []
>>> M = L
>>> L = L + [1]
>>> M
[]

You said:

"I presume you got confused by the somewhat arbitrary difference between 
__add__ and __iadd__ that somehow suggest there is an in-place-
modification going on in case of mutables but as the following snippet 
shows - that's not the case: ..."

That's an explicit denial that in-place modification takes place, and 
that's *way* off the mark. I was concentrating so hard on showing in-
place modification that I glossed over the "return self" part.



-- 
Steven.


From bignose+hates-spam at benfinney.id.au  Tue Oct 16 07:19:26 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 21:19:26 +1000
Subject: Python's coming... from unexpected angles.
References: <5njcjpFil587U1@mid.uni-berlin.de> <87fy0b4e0e.fsf@benfinney.id.au>
	<op.t0aalvq4wepdt4@ericb.pragmadev>
Message-ID: <877iln488x.fsf@benfinney.id.au>

"Eric Brunel" <see.signature at no.spam> writes:

> Well, I'd definetely vote for a name change for PyPy, as in french,
> it's pronounced "pee-pee", and yes, it means what you think it
> means... ;-)

Does that mean you pronounce the word for the serpent as "pee-thon"?

Anyway, the pronunciation of "Python" (and hence the "Py" in "PyPy")
is however you pronounce that word in the name of the comedy troupe,
Monty Python. That's where the name originates, after all.

-- 
 \        "With Lisp or Forth, a master programmer has unlimited power |
  `\     and expressiveness. With Python, even a regular guy can reach |
_o__)                            for the stars."  -- Raymond Hettinger |
Ben Finney


From seandavi at gmail.com  Wed Oct 17 16:53:26 2007
From: seandavi at gmail.com (Sean Davis)
Date: Wed, 17 Oct 2007 20:53:26 -0000
Subject: Async XMLRPC and job processing
Message-ID: <1192654406.010168.205960@q3g2000prf.googlegroups.com>

I would like to set up a server that takes XMLRPC requests and
processes them asynchronously.  The XMLRPC server part is trivial in
python.  The job processing part is the part that I am having trouble
with.  I have been looking at how to use threadpool, but I can't see
how to get that working.  I would like to have the XMLRPC part of
things do something like:

def method1(a,b,c):
    jobid=workRequest(long_method1,[a,b,c])
    return(jobid)

def method2(a,b,c):
    jobid=workRequest(long_method2,[a,b,c])
    return(jobid)

def long_method1(a,b,c)
    do lots of heavy computation, etc.
    store results in files in a given directory, etc
    return result

.... for any number of methods

Again, pretty straightforward.  However, I run into problems with the
threadpool and xmlrpc server both waiting.  In particular, if I do
something like:

server = SimpleXMLRPCServer.SimpleXMLRPCServer(.....)
server.serve_forever()

Where can tell the threadpool that I have set up to wait
indefinitely?  Both are blocking.

Thanks,
Sean



From bbxx789_05ss at yahoo.com  Mon Oct 15 23:02:34 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: Mon, 15 Oct 2007 20:02:34 -0700
Subject: groupby() seems slow
Message-ID: <1192503754.490662.155610@v29g2000prd.googlegroups.com>

I'm applying groupby() in a very simplistic way to split up some data,
but when I timeit against another method, it takes twice as long.  The
following groupby() code groups the data between the "</tr>" strings:

data = [
"1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
"1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
"1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
]

import itertools

def key(s):
    if s[0] == "<":
        return 'a'
    else:
        return 'b'

def test3():

    master_list = []
    for group_key, group in itertools.groupby(data, key):
        if group_key == "b":
            master_list.append(list(group) )


def test1():
    master_list = []
    row = []

    for elmt in data:
        if elmt[0] != "<":
            row.append(elmt)
        else:
            if row:
                master_list.append(" ".join(row) )
                row = []


import timeit

t = timeit.Timer("test3()", "from __main__ import test3, key, data")
print t.timeit()
t = timeit.Timer("test1()", "from __main__ import test1, data")
print t.timeit()

--output:---
42.791079998
19.0128788948

I thought groupby() would be faster.  Am I doing something wrong?



From mulkiatsch at gmail.com  Tue Oct  9 08:05:24 2007
From: mulkiatsch at gmail.com (Matthias Benkard)
Date: Tue, 09 Oct 2007 05:05:24 -0700
Subject: The fundamental concept of continuations
In-Reply-To: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <1191931524.047907.98040@v3g2000hsg.googlegroups.com>

> (3) Is it present in python ...?

I don't keep up to date with the recent developments in Python land,
but the last time I used Python, it certainly didn't have first-class
continuations.  There used to be a project called Stackless Python
that tried to add continuations to Python, but as far as I know, it
has always been separate from the official Python interpreter.  I
don't know whether it's still alive.  You may want to check http://stackless.com/
for details.


> (6) any good readable references that explain it lucidly ?

If you are familiar with Python syntax, there's
http://www.ps.uni-sb.de/~duchier/python/continuations.html -- and even
if you aren't, you may want to have a look at it, as simple Python
code is ridiculously easy to read.

~ Matthias



From george.sakkis at gmail.com  Wed Oct 17 10:18:55 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 17 Oct 2007 14:18:55 -0000
Subject: Order by value in dictionary
In-Reply-To: <5nmj7sFiouurU3@mid.uni-berlin.de>
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
	<5nmj7sFiouurU3@mid.uni-berlin.de>
Message-ID: <1192630735.734441.199820@q5g2000prf.googlegroups.com>

On Oct 17, 10:06 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Diez B. Roggisch wrote:
> > Abandoned wrote:
>
> >> Hi..
> >> I have a dictionary like these:
> >> a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
> >> element
> >> I want to sort this by value and i want to first 100 element..
> >> Result must be:
> >> [b, a, d, c .....] ( first 100 element)
>
> >> I done this using FOR and ITERATOR but it tooks 1 second and this is
> >> very big time to my project.
> >> I want to learn the fastest method..
>
> > That is the fastest method, unless you write your own ordered dict
> > implementation that sorts by value. But that will most probably lose the
> > time when holding up the invariant when inserting key/values into the
> > dictionary.
>
> Actually, I somehow read the FOR and ITERATOR above as something like this:
>
> entries = sorted(a.items(), key=lambda v: v[1])[:100]
>
> The gist of my statement above is nontheless the same: if you want sorted
> results, you need to sort...
>
> Diez

If you want the top 100 out of 100K, heapq.nlargest is more than an
order of magnitude faster.

George



From besturk at gmail.com  Mon Oct  1 13:13:48 2007
From: besturk at gmail.com (Abandoned)
Date: Mon, 01 Oct 2007 10:13:48 -0700
Subject: Select as dictionary...
In-Reply-To: <1191258548.820547.123560@k79g2000hse.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
	<47010e97$0$7777$426a74cc@news.free.fr>
	<1191258548.820547.123560@k79g2000hse.googlegroups.com>
Message-ID: <1191258828.206660.21570@22g2000hsm.googlegroups.com>

Also if i need a list id what can i do ?

aia.execute("SELECT id, w from list")
links=aia.fetchall()

I want to..

idlist=[1, 2, 3] ( I don't want to use FOR and APPEND because the
query have 2 million result and i want to speed)



From larry.bates at websafe.com  Tue Oct  9 08:05:57 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 09 Oct 2007 07:05:57 -0500
Subject: Drop folder and race conditions
Message-ID: <e4WdnerJMt0885banZ2dnUVZ_t2inZ2d@comcast.com>

I have a need to implement a drop folder upload mechanism for secure uploading 
of files to a server.  At first glance this appears that it would be an easy 
application to write.  Then I begin to think about the race conditions that 
exist between the process that will wake up to upload the files and the fact 
that the user can add additional files to the drop folder at any point in time.
I would like to clear out files/folders after they have been processed but it is 
possible that while the background process was uploading files, the user added 
additional files/folders to the drop folder that make the deletion of folders 
impossible.  This project has become significantly more complex than it appeared 
at first.  Anyone out there have any "sage" advice on how to tackle this beast?

Thanks in advance for any pointers.

Regards,
Larry Bates


From timaranz at gmail.com  Thu Oct 18 15:48:52 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Thu, 18 Oct 2007 12:48:52 -0700
Subject: problem with Python class creating
In-Reply-To: <1192735357.724298.55500@v29g2000prd.googlegroups.com>
References: <1192735357.724298.55500@v29g2000prd.googlegroups.com>
Message-ID: <1192736932.268928.9490@y27g2000pre.googlegroups.com>

On Oct 19, 8:22 am, dmitrey <dmitrey.kros... at scipy.org> wrote:
> Hi all,
> I have the code like this one:
>
> from myMisc import ooIter
> class MyClass:
>     def __init__(self): pass
>     iterfcn = lambda *args: ooIter(self) # i.e pass the class instance
> to other func named ooIter
>     field2 = val2
>     field3 = val3 # etc
>
> So it yields "global name 'self' is not defined", that is true. How
> could I handle the situation?
>
> Currently I do (and it works, but give me some troubles - I should
> call MyClass.__init__ for each children class, and there are lots of
> those ones)
>
> class MyClass:
>     def __init__(self):
>         iterfcn = lambda *args: ooIter(self) # i.e pass the class
> instance to other func named ooIter
>     field2 = val2
>     field3 = val3 # etc
>
> I suspect it has better solution, is it?
> Thank you in advance, Dmitrey

without having tested - I think this should work for you:

from myMisc import ooIter

class MyClass:
     def __init__(self): pass
     iterfcn = lambda self: ooIter(self)



From deets at nospam.web.de  Mon Oct  8 09:15:36 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 15:15:36 +0200
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com>
	<13gk96sks58ad9f@corp.supernews.com>
Message-ID: <5muoroFfdr86U2@mid.uni-berlin.de>

Steven D'Aprano wrote:

> On Sun, 07 Oct 2007 21:27:31 -0700, Aahz wrote:
> 
>> In article <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d at comcast.com>, Steven
>> Bethard  <steven.bethard at gmail.com> wrote:
>>>
>>>You can use __slots__  [...]
>> 
>> Aaaugh!  Don't use __slots__!
>> 
>> Seriously, __slots__ are for wizards writing applications with huuuge
>> numbers of object instances (like, millions of instances).  For an
>> extended thread about this, see
>> 
>> http://groups.google.com/group/comp.lang.python/browse_thread/
> thread/8775c70565fb4a65/0e25f368e23ab058
> 
> Well, I've read the thread, and I've read the thread it links to, and for
> the life of me I'm still no clearer as to why __slots__ shouldn't be used
> except that:
> 
> 1 Aahz and Guido say __slots__ are teh suxxor;
> 
> 2 rumour (?) has it that __slots__ won't make it into Python 3.0;
> 
> 3 inheritance from classes using __slots__ doesn't inherit the slot-
> nature of the superclass.
> 
> 
> Point 1 is never to be lightly dismissed, but on the other hand Guido
> doesn't like reduce(), and I'm allergic to "Cos I Said So" arguments.
> 
> History is full of things which were invented for one purpose being used
> for something else. So, that being the case, suppose I accept that using
> __slots__ is not the best way of solving the problem, and that people of
> the skill and experience of Guido and Aahz will roll their eyes and
> snicker at me.
> 
> But is there actually anything *harmful* that can happen if I use
> __slots__?

Point 3 clearly is harmful. As is the fact that __slots__ gives you troubles
if you e.g. pass objects to code that tries to set arbitrary attributes on
an object. While this might be frowned upon, it can be useful in situations
where you e.g. link GUI-code/objects with data-objects: instead of creating
cumbersome, explicit mappings (as you have to in C/C++/Java) or wrappers,
just set a well-named property.

The question is: what does a slot buy you for this kind of problem? And
while arguing with "then I can't set an attribute I didn't want to be set"
is certainly possible, it ultimately leads to the darn
static-vs-dynamic-discussion. Which we might spare us this time.

Diez


From martin at v.loewis.de  Tue Oct 16 14:41:25 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 16 Oct 2007 20:41:25 +0200
Subject: Build Python 2.5 against Tk 8.5
In-Reply-To: <4714D4AB.3080103@codebykevin.com>
References: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>
	<4714D34C.4050603@v.loewis.de> <4714D4AB.3080103@codebykevin.com>
Message-ID: <471505D5.7010501@v.loewis.de>

> It's been a while, but when I've tried to run my Tkinter app against Tk
> 8.5 with a stock Python installation, I get an error message saying that
> Tk 8.4.x is required. 

Can you please clarify what you mean by "stock Python installation"?
I just built Python 2.5.1 with Tk 8.5 on Debian unstable, and it works
fine.

> It's probably tkinter.so that hard-codes the
> Tcl/Tk version, not Python itself--I should have been clearer on that.

It's still not clear. I'm the current maintainer of the _tkinter module,
and I can assert that _tkinter.c does *not* hard-code Tk 8.4. As you
refer to _tkinter.so, it appears you are talking about a precompiled
version - did you try to build Python yourself?

Regards,
Martin


From steve at REMOVE-THIS-cybersource.com.au  Fri Oct 26 21:35:28 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 27 Oct 2007 01:35:28 -0000
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
Message-ID: <13i55f0ib2m9gde@corp.supernews.com>

On Fri, 26 Oct 2007 16:29:34 -0700, jimmy.musselwhite wrote:

> On Oct 26, 6:56 pm, "Chris Mellon" <arka... at gmail.com> wrote:
>> On 10/26/07, jimmy.musselwh... at gmail.com <jimmy.musselwh... at gmail.com>
>> wrote:
>>
>> > Hello all
>> > It would be great if I could make a number that can go beyond current
>> > size limitations. Is there any sort of external library that can have
>> > infinitely huge numbers? Way way way way beyond say 5x10^350 or
>> > whatever it is?
>>
>> > I'm hitting that "inf" boundary rather fast and I can't seem to work
>> > around it.
>>
>> What in the world are you trying to count?
> 
> The calculation looks like this
> 
> A = 0.35
> T = 0.30
> C = 0.25
> G = 0.10
> 
> and then I basically continually multiply those numbers together. I need
> to do it like 200,000+ times but that's nuts.


Because this is homework, I'm not going to give you the answer. But I 
will give you *almost* the answer:

(A*T*C*G)**200000 = ?.03?10875*10**-51?194

Some of the digits in the above have been deliberately changed to 
question marks, to keep you honest.



> I can't even do it 1000
> times or the number rounds off to 0.0. I tried taking the inverse of
> these numbers as I go but then it just shoots up to "inf".

Hint:

If we multiply A*T*C*G, we get 0.002625.

That's the same as 0.2625 with a (negative) scale factor of 2.

Another hint: for calculations of this nature, you can't rely on floating 
point because it isn't exact. You need to do everything in integer maths.

A third hint: don't re-scale the product too often.

Enough clues?



-- 
Steven.


From jadamson at partners.org  Tue Oct  9 09:26:02 2007
From: jadamson at partners.org (Joel J. Adamson)
Date: Tue, 09 Oct 2007 09:26:02 -0400
Subject: why did MIT drop scheme for python in intro to computing?
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
Message-ID: <87fy0k1kt1.fsf@W0053328.mgh.harvard.edu>

gnuist006 at hotmail.com writes:

> On Oct 8, 1:23 pm, b... at cs.berkeley.edu (Brian Harvey) wrote:
>> "Kjetil S. Matheussen" <k.s.matheus... at notam02.no> writes:

[...]

>
> Does scheme have a gui library?

Scheme is not a language, it's a standard for implementation.  How
much implementors choose to implement is entirely up to them.

PLT Scheme, a particular implementation of Scheme, does have graphics
and GUI libraries.

Joel

-- 
Joel J. Adamson
Biostatistician
Pediatric Psychopharmacology Research Unit
Massachusetts General Hospital
Boston, MA  02114
(617) 643-1432
(303) 880-3109


From emperorcezar at gmail.com  Thu Oct 11 18:57:51 2007
From: emperorcezar at gmail.com (emperorcezar at gmail.com)
Date: Thu, 11 Oct 2007 22:57:51 -0000
Subject: Django Contractual Position
Message-ID: <1192143471.927098.319760@e9g2000prf.googlegroups.com>

The Institute of Design of Chicago, IL is seeking an experienced
Django developer to create an in-house contact and mailing web
application. The application manages the contacts for the different
conferences and events at the Institute of Design.

The ideal candidate has experience with at least one completed Django
application, the more the better. Good communication is required as
the applicant will also be involved with design of the application.

Pay is negotiable. This is a contractual position. Local applicants
only. Applicant must be able to attend meetings at the Institute of
Design 350 N. La Salle St. Chicago, IL 60610

please contact alon at id.iit.edu and cezar at id.iit.edu if interested.



From robin at reportlab.com  Tue Oct  9 13:21:02 2007
From: robin at reportlab.com (Robin Becker)
Date: Tue, 09 Oct 2007 18:21:02 +0100
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191935665.284553.110020@r29g2000hsg.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>	<mailman.7.1191917068.916.python-list@python.org>	<1191929178.103375.308840@50g2000hsm.googlegroups.com>	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
Message-ID: <470BB87E.9010809@chamonix.reportlab.co.uk>

aaron.watters at gmail.com wrote:
> On Oct 9, 8:46 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
>> ps. there is a python project named "The Devil Framework", I cringe
>> every time I hear about it.Nucularis not as bad, but it is close.
> 
> Aw shucks.  I thought it was funny.  Can't I make fun of
> politicians in my open source projects?  Besides there is
> a great tradition of tounge-in-cheek package names, like
> "Cold fusion", for example.
>.......

I think it's an excellent name :)
-- 
Robin Becker



From qam at quantal.com  Thu Oct 25 17:41:38 2007
From: qam at quantal.com (QAM)
Date: Thu, 25 Oct 2007 14:41:38 -0700
Subject: Read Matlab files with Python and Numeric?
Message-ID: <AMPHORARapKT5IE4WXP00001151@amphora.quantal.quantal.com>

Hi Travis,

 

Could you please send me the matlab reader you mentioned?  

 

Thanks,

 

Frank

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/ce54acd5/attachment.html>

From wizzardx at gmail.com  Fri Oct  5 04:25:05 2007
From: wizzardx at gmail.com (David)
Date: Fri, 5 Oct 2007 10:25:05 +0200
Subject: Adding behaviour for managing "task" dependencies
In-Reply-To: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
References: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
Message-ID: <18c1e6480710050125s7785616bk8b44a2f026d7035a@mail.gmail.com>

>
> Any thoughts would be most appreciated, though I would like to stress
> that I don't think Python should support the syntax I'm proposing I'd
> just like to know if I can extend a copy of it to do that.
>

You can use syntax like this:

class MyJob1(Job):
    depends(MyJob2)
    depends(MyJob3)

Or with quotes (if MyJob2 and MyJob3 could be declared later):

class MyJob1(Job):
    depends('MyJob2')
    depends('MyJob3')

(where 'depends' is a DSL-like construct. See Elixir
(elixir.ematia.de) for an example of how to implement DSL statements
like "depends". Check their implementation of the "belongs_to"
statement.

You could also extend your "depends" dsl statement to allow more than
one dep at a time, eg:

class MyJob1(Job):
    depends('MyJob2', 'MyJob3')

Whatever approach you use, you should also look into implementing
"topological sort" logic. This lets you resolve programatically which
order the inter-dependent tasks should be handled in to satisfy their
dependencies.

You may find this module interesting in this regard:

http://pypi.python.org/pypi/topsort

David.


From mbmessaoud at yahoo.com  Fri Oct 26 04:30:18 2007
From: mbmessaoud at yahoo.com (mokhtar)
Date: Fri, 26 Oct 2007 01:30:18 -0700 (PDT)
Subject: renice
Message-ID: <13422771.post@talk.nabble.com>


Hi

Is it possible to renice the python process executing the current python
script ?:confused:
-- 
View this message in context: http://www.nabble.com/renice-tf4695834.html#a13422771
Sent from the Python - python-list mailing list archive at Nabble.com.



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 18:23:37 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 19:23:37 -0300
Subject: Using msvcrt (in Windows), how to catch Enter key?
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
	<20071029165317.7009D1E4012@bag.python.org>
	<20071029174011.D22641E4029@bag.python.org>
Message-ID: <op.t0zchnivx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 29 Oct 2007 14:39:49 -0300, Dick Moores <rdm at rcblue.com> escribi?:

> But here's a case where it seems I do need the
>
> if msvcrt.kbhit() line

At least add a small sleep() call inside the loop, to be nice to other  
running processes:

> =========================
> #!/usr/bin/env python
> #coding=utf-8
> import time
> import msvcrt
> timeNow = time.time()
> oldTimeNow = timeNow
> while True:
>      if msvcrt.kbhit():
>          key = msvcrt.getch()
>          if key == 'h':
>              print 'Hello'
>          if key == 'b':
>              print 'Bye'
>          if key == '\r': # Enter key
>              break
        else:
            time.sleep(0.1)
>      timeNow = time.time()
>      if timeNow - oldTimeNow > 5:
>          print "5 seconds passed"
>          oldTimeNow = timeNow
> ==========================

-- 
Gabriel Genellina



From http  Thu Oct 25 01:20:14 2007
From: http (Paul Rubin)
Date: 24 Oct 2007 22:20:14 -0700
Subject: Adding idle timeout capabilities to asyncore
References: <1193081330.701282.149040@v29g2000prd.googlegroups.com>
Message-ID: <7xlk9rvkhd.fsf@ruckus.brouhaha.com>

Giampaolo Rodola' <gnewsg at gmail.com> writes:
> def readable(self):
>     if time.time() >= self.timeout:
>         self.send("Timeout")
>         self.close()
>     return 1

Don't do it this way.  Put all the timeouts into a priority queue
(see the heapq module) so you only need to check the one due to expire
soonest.


From ameyer2 at yahoo.com  Tue Oct 23 14:24:18 2007
From: ameyer2 at yahoo.com (Alan Meyer)
Date: Tue, 23 Oct 2007 11:24:18 -0700
Subject: Hiding tracebacks from end-users
In-Reply-To: <13hs7247ncm67d@corp.supernews.com>
References: <13hs7247ncm67d@corp.supernews.com>
Message-ID: <1193163858.831863.182290@k35g2000prh.googlegroups.com>

On Oct 23, 12:07 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:

...
>     if expert_mode:
>         # experts get the full traceback with no hand-holding.
>         raise
>     else:
>         # print a more friendly error message
...

Another approach is to always print a friendly error message,
but append the traceback to a log file (see the traceback
module for how to do that.)  The friendly error message can
include a note that full information is available in the log
file.

The advantage of that is that you capture critical information
that is otherwise lost when a non-expert user hits the exception.
For intermittent bugs that are hard to reproduce, this can be
a lifesaver - especially when your favorite non-expert user
seems to have a knack for generating errors that you can't figure
out how to create ;-)

    Alan



From chlo.prog at gmail.com  Tue Oct  2 11:12:09 2007
From: chlo.prog at gmail.com (rc)
Date: Tue, 02 Oct 2007 15:12:09 -0000
Subject: win32com COMAdminCatalogObject Value method
In-Reply-To: <1191274799_4541@sp12lax.superfeed.net>
References: <1191247471.992094.203630@n39g2000hsh.googlegroups.com>
	<1191274799_4541@sp12lax.superfeed.net>
Message-ID: <1191337929.043023.115290@r29g2000hsg.googlegroups.com>

> Try objCOMAdminCatalogObject.SetValue("ID", AppID).
>
>          Roger- Hide quoted text -
>
> - Show quoted text -

When I try that I get exception:
AttributeError: Add.SetValue

I think the only valid methods are: Key(), Name(), Valid() and Value()

The thing I'm most confused about is that it seems to be getting into
the __getattr__ method, not the set, here's the whole error:
Traceback (most recent call last):
  File "C:\programming\python\dev\src\FullInstallScripts
\COMObjectFullInstall.py", line 74, in <module>
    CreateApplication()
  File "C:\programming\python\dev\src\FullInstallScripts
\COMObjectFullInstall.py", line 21, in CreateApplication
    objCOMAdminCatalogObject.SetValue("ID", AppID)
  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py",
line 496, in __getattr__
    raise AttributeError, "%s.%s" % (self._username_, attr)
AttributeError: Add.SetValue



From ptmcg at austin.rr.com  Fri Oct 12 15:04:23 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 12 Oct 2007 12:04:23 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <1192195158.203063.143920@e9g2000prf.googlegroups.com>
References: <1192195158.203063.143920@e9g2000prf.googlegroups.com>
Message-ID: <1192206298.856282.124640@z24g2000prh.googlegroups.com>

On Oct 12, 8:19 am, John Machin <sjmac... at lexicon.net> wrote:
> "... most of the developed world" was the [very optimistic] request.
> How does it go with "JAPAN 112-0001 TOKYO Bunkyo-Ku Hakusan 4-Chome 3-
> 2" and will it give the same result for "4-3-2 HAKUSAN BUNKYO-KU TOKYO
> 112-00001 JAPAN"? OK, a little exotic ... closer to "home", what about
> addresses in Quebec? People often write addresses in formats that you
> won't find on the postal service website, but the local postal workers
> will still deliver. Rural addresses can be quaintly medieval e.g. "Lot
> 123, Hundred of Foughbarre" [South Australia]. Etc etc ...

John -

As I'm sure you already know, the answer is "not too well".  I've been
to Japan and Europe too, and I can't even figure out how many digits a
phone number is supposed to have!

I once lived in a small town in Virginia, and received a Christmas
card from a friend (who wanted to remind me just how small a town I
was living in) addressed simply as "The McGuire's, <name-of-town>,
Virginia" - I happened to mention it the next time I was at the post
office, and they said "yep, you're the only McGuires we got!"

In the spectrum of tools from string.split, to re, to pyparsing and
its ilk, to natural language toolkits, the broader the scope of your
"address space", the further you find your self moving toward NLTK.  I
knew my pyparsing script wasn't in the "anywhere in the developed
world" category, that's why I posted the test cases, too.

If you've got an re that can handle everything from "123 Main" to
"221B Baker Street" to "Hollywood and Vine" to "Lot 123, Hundred of
Foughbarre", now THAT would be something.

-- Paul



From http  Thu Oct 11 03:30:11 2007
From: http (Paul Rubin)
Date: 11 Oct 2007 00:30:11 -0700
Subject: Fwd: NUCULAR fielded text searchable indexing
References: <mailman.59.1192065699.927.python-list@python.org>
Message-ID: <7xtzoynm64.fsf@ruckus.brouhaha.com>

"Delaney, Timothy (Tim)" <tdelaney at avaya.com> writes:
> In the case of "nucular", it's a mispronunciation that has been widely
> ridiculed all over the world. There are people (including myself) who so
> associate it as an object of ridicule that it's an immediate turn-off.

It gave me a chuckle, since it's an obvious play on the mispronunciation.

As for the program itself, I've only had a chance to glance at the
site, but it looks a little more akin to Solr than to Lucene.  Solr is
a Java application that wraps Lucene to present a more convenient
interface, although it does this using XML over an HTTP socket.  One
thing about Solr and probably anything else like this: if you want to
handle a high query load with big result sets, you absolutely must
have enough ram to cache your entire index.  Since ram is expensive
and most of it will be sitting there doing nothing during the
execution of any query, it follows that you want multiple CPU's
sharing the ram.  So we're back to the perennial topic of parallelism
in Python...


From paul at boddie.org.uk  Tue Oct  2 05:29:12 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Tue, 02 Oct 2007 02:29:12 -0700
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191293650.355504.312590@n39g2000hsh.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<7xr6kez5aa.fsf@ruckus.brouhaha.com>
	<1191293650.355504.312590@n39g2000hsh.googlegroups.com>
Message-ID: <1191317352.082848.30060@g4g2000hsf.googlegroups.com>

On 2 Okt, 04:54, bramble <cadet.bram... at gmail.com> wrote:
>
> Maybe the key I'm missing is this: maybe GvR and company think that a
> language absolutely should come off-the-shelf with GUI toolkit
> bindings. So, given that, they feel they've gotta pick just one, and
> they've already got Tkinter and it works, so that's that. Is that it?

Yes. Also, Tk isn't a particularly fast-moving target compared to some
of the other toolkits, so it's possible to not spend too much time
maintaining the bindings for it, I imagine. Otherwise, Tkinter might
have fallen out of the standard library by now.

Paul



From gneuner2/ at comcast.net  Tue Oct  2 01:02:29 2007
From: gneuner2/ at comcast.net (George Neuner)
Date: Tue, 02 Oct 2007 01:02:29 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
Message-ID: <26k3g39enhpkqdamv6kopiopijotv6v7q6@4ax.com>

On Tue, 02 Oct 2007 03:38:08 GMT, Roedy Green
<see_website at mindprod.com.invalid> wrote:

>On Fri, 28 Sep 2007 18:27:04 -0500, Damien Kick <dkixk at earthlink.net>
>wrote, quoted or indirectly quoted someone who said :
>
>>"free as in beer". 
> 
>but does not "free beer" nearly always come with a catch or implied
>obligation?

It means you have to bring the chips.

George
--
for email reply remove "/" from address


From lew at lewscanon.com  Sun Oct 21 11:52:03 2007
From: lew at lewscanon.com (Lew)
Date: Sun, 21 Oct 2007 11:52:03 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192981349.181197.308610@q5g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
Message-ID: <tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>

llothar wrote:
> Well programming in the small like sort algorithms for sure. But not
> for his great discoveries but for one of the first man who was paid
> for this by this university employee.

What a curious thesis.

> But in the field of software enginering as i said before he
> completely
> failed.

As you said, but for which you provided absolutely no evidence, and the 
counter evidence that Arne provided is that he has not "completely" failed for 
any useful value of "failed".  Statements of absolute only need one 
counterexample.  /The Art of Programming/ is arguably the most significant 
contribution to the field of software engineering.  By any reasonable 
assessment, on the basis of that one work alone Knuth was a success.

Your rhetorical tack of unfounded assertions and inflammatory 
characterizations, not to say complete disregard for the reality of the 
situation, do not make a cogent case, much less a convincing one.

I am afraid that your conclusion is quite mistaken.  Knuth is, if anything, a 
huge success in the field of software engineering, whether you rate it as 
making a contribution to the art, or as being paid to perform the art.

-- 
Lew


From hat at se-162.se.wtb.tue.nl  Mon Oct  8 06:23:27 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Mon, 08 Oct 2007 12:23:27 +0200
Subject: Really basic problem
References: <mailman.1663.1191838188.2658.python-list@python.org>
Message-ID: <slrnfgk18v.kbh.hat@se-162.se.wtb.tue.nl>

On 2007-10-08, Andreas Tawn <andreas.tawn at ubisoft.com> wrote:
>> i know this example is stupid and useless, but that's not the answer
>> to my question.
>> here it goes:
>> 
> You've just discovered the joys of floating point number comparisons.
>
> Consider this snippet:
>
> status = 0.0
> print (repr(status))
>
> for i in range(10):
>     status += 0.1
>     print (repr(status))
>
> Output:
>
> 0.0
> 0.10000000000000001
> 0.20000000000000001
> 0.30000000000000004
> 0.40000000000000002
> 0.5
> 0.59999999999999998
> 0.69999999999999996
> 0.79999999999999993
> 0.89999999999999991
> 0.99999999999999989
>
> The issue is that 0.1 etc don't have an exact representation as floating
> point.
>
> Interestingly:
>
>>>> 0.10000000000000001 == 0.1
> True
>>>> 0.30000000000000004 == 0.3
> False
>
> I guess this means that Python has some concept of "close enough", but
> I'll have to defer to someone more knowledgeable to explain that.

It's not Python, it is the computer, ie you have this problem with any program
that uses floating point calculations. However, some programs hide it from you
so you think there is no problem...

Plz read the FAQ for an answer to this and many other questions:
http://www.python.org/doc/faq/general/#why-are-floating-point-calculations-so-inaccurate


Sincerely,
Albert


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sat Oct  6 08:16:01 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sat, 06 Oct 2007 14:16:01 +0200
Subject: Segmentation fault..
In-Reply-To: <f67kt4-v7q.ln1@strongwill.g2ctech>
References: <1191668481.171014.54840@57g2000hsv.googlegroups.com>
	<f67kt4-v7q.ln1@strongwill.g2ctech>
Message-ID: <47077c62$0$18737$426a74cc@news.free.fr>

Jorge Godoy a ?crit :
> Abandoned wrote:
> 
>> Hi..
>> I run a my script and 3-4 minutes later give me an error "segmentation
>> fault".
>> What is the reason of this error ?
>>
>> I use in my script:
>> Threading
>> Psycopg2
>> open & write to txt
>> urlopen
>>
>> My platform is ubuntu linux.
>>
>> I'm sorry my bad english.
>> King regards..
> 
> Without seeing any code, it is hard to say anything.  But the answer to the
> ultimate question is "42".

Indeed. Err, what was the question, exactly ?-)

> Show the group some code and I'm sure people will help.

To be more precise: post the minimal working code reproducing the 
problem, and the full traceback.


From p at ulmcnett.com  Thu Oct 18 16:08:04 2007
From: p at ulmcnett.com (Paul McNett)
Date: Thu, 18 Oct 2007 13:08:04 -0700
Subject: Problem with format string / MySQL cursor
In-Reply-To: <1192736676.035569.188300@e9g2000prf.googlegroups.com>
References: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
	<1192736676.035569.188300@e9g2000prf.googlegroups.com>
Message-ID: <4717BD24.5080607@ulmcnett.com>

timaranz at gmail.com wrote:

> On Oct 19, 7:32 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
>> Hello,
>> I have a string:
>>
>> INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
>> `gid`, `password`) VALUES (%s, %s, %s, %s, %i, %i, %s)
>>
>> that is passed to a MySQL cursor from MySQLdb:
>>
>> ret = cursor.execute(sql, paras)
>>
>> paras is:
>>
>> ('flindner', 'te... at florian-lindner.de', '/home/flindner/', '/home/
>> flindner/Mail/test', 1001, 1001, '123')
>>
>> But that gives me an error:
>>
>> Traceback (most recent call last):
>>   File "account.py", line 188, in ?
>>     main()
>>   File "account.py", line 33, in main
>>     execute(action, account_type, options)
>>   File "account.py", line 129, in execute
>>     executeSQL(sql, options.username, options.login, options.home,
>> options.directory, options.uid, options.gid, options.password)
>>   File "/home/flindner/common.py", line 29, in executeSQL
>>     ret = cursor.execute(sql, paras)
>>   File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line
>> 148, in execute
>>     query = query % db.literal(args)
>> TypeError: int argument required
>>
>> I don't see errors in the format string or some other problem....
>>
>> What's wrong?


> You should be using '?' for parameter bindings in your sql string not
> python format specifiers (you are after all writing sql here not
> python).
> 
> INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
> `gid`, `password`) VALUES (?, ?, ?, ?, ?, ?, ?)



Sorry Tim, but that isn't correct:

>>> import MySQLdb
>>> MySQLdb.paramstyle


'format'

Florian, what happens when you replace your %i with %s?


-- 
pkm ~ http://paulmcnett.com



From gagsl-py2 at yahoo.com.ar  Mon Oct 22 11:50:12 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 22 Oct 2007 12:50:12 -0300
Subject: Check File Change Every 10 Seconds
References: <27459.1491478079$1193048158@news.gmane.org>
	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
	<40899.5410231457$1193064457@news.gmane.org>
Message-ID: <op.t0lvlyy4x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Mon, 22 Oct 2007 11:45:49 -0300, Robert Rawlins - Think Blue  
<robert.rawlins at thinkbluemedia.co.uk> escribi?:

> Thanks for your time Gabriel,
>
> That certainly looks to be the type of thing that I'm looking to  
> achieve, however, I forgot to mention I'm running this on a Linux  
> platform and not a Win32 one :-( Sorry.

Ouch! Should have asked...

> I'm sure similar things are achievable, I've used os.stat before now to  
> get the time stamp for when a file was last changed, if I perhaps  
> combine this with the while 1: inside a thread I can achieve the same  
> end result? Sound like a good idea?

Yes, that may work, but there are better ways I think. Check this recipe  
<http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/217829> and the  
pyinotify module at sourceforge.

-- 
Gabriel Genellina



From alfonso66alfonso at yahoo.com  Mon Oct 22 03:35:39 2007
From: alfonso66alfonso at yahoo.com (Alfonso)
Date: Mon, 22 Oct 2007 00:35:39 -0700
Subject: Fat Loss 4 Idiots
Message-ID: <1193038539.458781.273240@t8g2000prg.googlegroups.com>



Learn the 10 Idiot proof rules of dieting and fat loss. Stop using low
carb diets.
Stop using low calorie diets. Stop using low fat diets. Be proud that
you could finally loose those pounds.

http://netsales77.4idiots.hop.clickbank.net



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Oct 25 13:29:23 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 25 Oct 2007 19:29:23 +0200
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
	<13i09eohrt6il52@corp.supernews.com>
Message-ID: <5oc23kFm4aqfU1@mid.individual.net>

Dennis Lee Bieber wrote:
> Besides preferring an install path that doesn't have spaces...

Which I don't understand (works best for me, and is best practice in
Windows).
 
> On a proper XP (or later) system, one needs ADMIN privileges to
> install/modify the contents of %PROGRAMFILES%. Any user can
> probably install to a top-level "python25" directory. 

Really? That's a strange world. The normal place for user stuff is
his Files directory.

But it would be no problem to make a Python25 directory
user-writable, no matter where it is.

Regards,


Bj?rn

-- 
BOFH excuse #58:

high pressure system failure



From michele.simionato at gmail.com  Sat Oct  6 08:02:13 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sat, 06 Oct 2007 12:02:13 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <6b7kt4-v7q.ln1@strongwill.g2ctech>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<mailman.1608.1191668817.2658.python-list@python.org>
	<6b7kt4-v7q.ln1@strongwill.g2ctech>
Message-ID: <1191672133.323420.183340@g4g2000hsf.googlegroups.com>

On Oct 6, 7:15 am, Jorge Godoy <jgo... at gmail.com> wrote:
> Tim Chase wrote:
> > Any respectable comparison of Python web frameworks should
> > include evaluation of at least Django and TG.  Or at least give
> > good reason why the comparison excludes them.


Mine is not a respectable comparison of Web frameworks, it is
NOT intended to be so. It is just a set of notes I kept for
myself and that may be or may be not of interest to others.

> When he said that he didn't want anything complex neither anything that used
> a templating system, I thought this had already excluded a lot of
> frameworks, including TG and Django.

This is clearly not true, since I could use these frameworks
without using their templates if I wanted. It would be very
stupid to dismiss an entire framework only because I dislike
its templates.

> > Zope is also missing, but I'm not sure Zope qualifies so much as
> > a framework, but as an answer to the question "If Emacs were a
> > Python web environment, what would it look like?"
>
> He already had dislikings with Plone that weren't clear, maybe a lot of
> those are Zope related...
>
> I agree, though, that more time could be spent explaining "why" things were
> discarded / ignored.

Look, there are already tons of pages on the net ranting against
Zope, my complaints are quite common and I have no interest
in repeating what has been already said. For instance, if you
Google a bit you should find the rants of the Quixote people
against Zope. I share their position.
I did not talk about TG because I see it as being very close to
Pylons and everybody is saying they will be unified in the near
future, so it would be a waste of effort to discuss TG per se.

          Michele Simionato



From lennartb at xs4all.nl  Fri Oct 26 04:54:01 2007
From: lennartb at xs4all.nl (Lennart Benschop)
Date: Fri, 26 Oct 2007 10:54:01 +0200
Subject: Proposal: Decimal literals in Python.
Message-ID: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>

Python has had the Decimal data type for some time now. The Decimal data
type is ideal for financial calculations. Using this data type would be
more intuitive to computer novices than float as its rounding behaviour
matches more closely what humans expect. More to the point: 0.1 and 0.01
are exact in Decimal and not exact in float. 

Unfortunately it is not very easy to access the Decimal data type. To obtain
the decimal number 12.34 one has to do something like this:

import decimal
x=decimal.Decimal("12.34")

Of course we can intruduce a single character function name as an alias for
the Decimal type constructor, but even then we have to use both parentheses
and quotes for each and every decimal constant. We cannot make it shorter
than D("12.34")

With Python 3000 major changes to the language are carried out anyway. My
proposal would require relatively minor changes.

My proposal:
- Any decimal constant suffixed with the letter "D" or "d" will be 
  interpreted as a literal of the Decimal type. This also goes for
  decimal constants with exponential notation.

Examples of decimal literals:
1d
12.34d
1e-3d (equivalent to 0.001d)
1e3d (same value as 1000d, but without trailing zeros).
1.25e5d (same value as 125000d but without trailing zeros).

When we print a decimal number or convert it to a string with str(), a
trailing d should not be added. The repr function does yield strings with a
trailing d.

When decimal numbers are converted from strings, both numbers with and
without a trailing d should be accepted. 

If we have decimal literals in the core language, we should probably have a
type constructor in the core namespace, e.g. dec() along with int() 
and float(). We then need the decimal module only for the more advanced
stuff like setcontext.

Pros:
- the Decimal data type will be more readily accessible, especially
  for novices.
- Traling characters at the end of a literal are already used (the L
  for long).
- It does not conflict with the syntax of other numeric constants or
  language constructs.
- It does not change the meaning of existing valid literal constants.
  Constants that used to be float will continue to do so.

Cons:
- The lexical scanner of the Python interpreter will be slightly more
  complex.
- The d suffix for constants with exponential notation is ugly.
- Decimal numbers with exponentail notation like 2e5d could be mistaken
  for hex (by humans, not by the parser as hex requires the 0x prefix).
- It requires the decimal module to be part of the core Python
  interpreter.

--
Lennart



From amdescombes at gmail.com  Fri Oct 19 16:17:46 2007
From: amdescombes at gmail.com (AMD)
Date: Fri, 19 Oct 2007 22:17:46 +0200
Subject: Memory Problems in Windows 2003 Server
In-Reply-To: <5ngsgpFhiqfbU2@mid.uni-berlin.de>
References: <470f7857$0$27795$426a74cc@news.free.fr>	<feo0f7$jd1$2@solaris.cc.vt.edu>
	<4710a5ad$0$26731$426a74cc@news.free.fr>	<6b63h3p842g6ggafqbc5d4f8n4o48ramdm@4ax.com>	<4713338b$0$20269$426a74cc@news.free.fr>
	<5ngsgpFhiqfbU2@mid.uni-berlin.de>
Message-ID: <471910e8$0$17463$426a34cc@news.free.fr>

Thanks Marc,

I just tried shelve but it is very slow :(
I haven't tried the dbs yet.

Andre

Marc 'BlackJack' Rintsch a ?crit :
> On Mon, 15 Oct 2007 11:31:59 +0200, amdescombes wrote:
> 
>> Are there any classes that implement disk based dictionaries?
> 
> Take a look at the `shelve` module from the standard library.
> 
> Or object databases like ZODB or Durus.
> 
> Ciao,
> 	Marc 'BlackJack' Rintsch


From cyberco at gmail.com  Fri Oct 26 15:11:27 2007
From: cyberco at gmail.com (cyberco)
Date: Fri, 26 Oct 2007 19:11:27 -0000
Subject: Eclipse Plugins
In-Reply-To: <y-WdnU51FfbNrL_anZ2dnUVZ_q2dnZ2d@comcast.com>
References: <-5528451693797282245@unknownmsgid>
	<mailman.474.1193402575.13605.python-list@python.org>
	<y-WdnU51FfbNrL_anZ2dnUVZ_q2dnZ2d@comcast.com>
Message-ID: <1193425887.446924.82800@50g2000hsm.googlegroups.com>

> PyDev is open source, and the developer is pretty responsive, so if you
> could describe what is missing there is a good chance it would get
> implemented. I even fixed two bugs myself, my first ever real Java
> contribution...
>
> --
>   Heikki Toivonen

I can second that. I'm a happy PyDev user myself for any Python module
that is more than 100 lines long. The nice things is that it has a lot
of the same keybindings as the Eclipse Java editor has (duplicating
lines/blocks, organising imports, indent/dedent, etc). In cases where
PyDev needs a patch the main developer is always there to help you
out.

2B



From mccredie at gmail.com  Mon Oct 15 16:03:36 2007
From: mccredie at gmail.com (Matt McCredie)
Date: Mon, 15 Oct 2007 13:03:36 -0700
Subject: Newbi Q: What is a rational for strings not being lists in Python?
In-Reply-To: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
Message-ID: <9e95df10710151303s117658a5xde18c577d929f9ae@mail.gmail.com>

On 10/15/07, Dmitri O.Kondratiev <dokondr at gmail.com> wrote:
> To clarify my point:
> reverse()  is  a lucky one  - Python has variants of *this particular*
> function both for lists and strings. Yet what about other list functions?
> How in general, can I write a function that works  both on list and string
> types? Both are sequences, right? Why string is not a subtype of a list
> then?
> The advantage of string being a list of elements, where element is a char is
> that all list functions will work *without any modifications* on strings as
> well as on other types of lists.
> So, I am trying to understand: what is a rational for strings not being
> lists in Python?
>
> Thanks,
> --
> Dmitri O. Kondratiev
> dokondr at gmail.com
> http://www.geocities.com/dkondr
>
>  On 10/15/07, Dmitri O.Kondratiev <dokondr at gmail.com> wrote:
> > Gary, thanks for lots of info!
> > Python strings are not lists! I got it now. That's a pity, I need two
> different functions: one to reverse a list and one to reverse a string:
> >
> > def reverseList(xs):
> >     if xs == []:
> >         return xs
> >     else:
> >         return (reverseList (xs[1:])) + [xs[0]]
> >
> > def reverseStr(str):
> >     if str == "":
> >         return str
> >     else:
> >         return (reverseStr (str[1:])) + str[0]
> >
> > Ok. Now regarding in-place reversal of a list:
> >
> > >>> l = [1,2,3]
> > >>> l
> > [1, 2, 3]
> > >>> l.reverse()
> > >>> l
> > [3, 2, 1]
> >
> > That was, as I expected. Good.
> >
> > Then why this ? :
> >
> > >>> ls = [1,2,3].reverse()
> > >>> ls
> > >>>
> > >>> print [1,2,3].reverse()
> > None
> > >>>
> > I mean, why ls is empty after assignment?
> >
> > Also, I couldn't find in the Python docs what this form of slicing means:
> > xs[::-1]  ?
> >
> > It works for creating a reversed copy of either a string or a list, but
> what does '::-1' syntax means?
> >
> > Thanks,
> >
> > Dmitri O. Kondratiev
> > dokondr at gmail.com
> > http://www.geocities.com/dkondr
> >
> >
> >
> > On 10/15/07, Gary Herron < gherron at islandtraining.com> wrote:
> > > Dmitri O.Kondratiev wrote:
> > > >
> > > > The function I wrote (below) reverses lists all right:
> > > >
> > > > def reverse(xs):
> > > >     if xs == []:
> > > >         return []
> > > >     else:
> > > >         return (reverse (xs[1:])) + [xs[0]]
> > > >
> > > >
> > > > >>> reverse ([1,2,3])
> > > > [3, 2, 1]
> > > > >>>
> > > >
> > > >
> > > > Yet when I try to reverse a string I  get:
> > > >
> > > > >>> reverse ("abc")
> > > >
> > > > ...
> > > > ...
> > > > ...
> > > >
> > > >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> > > >
> > > >     return (reverse (xs[1:])) + [xs[0]]
> > > >
> > > >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> > > >
> > > >     return (reverse (xs[1:])) + [xs[0]]
> > > >
> > > >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
> > > >
> > > >     if xs == []:
> > > >
> > > > RuntimeError: maximum recursion depth exceeded in cmp
> > > >
> > > > >>>
> > > >
> > > > What's wrong? Why recursion never stops?
> > > >
> > > If you are doing this as an python-learning exercise, then read on.   If
> > > you are doing this reversal for real code, then try:
> > >
> > >   xs.reverse() for in-place reversal of a list (but not a string), or
> > >   result = xs[::-1] for creating a reversed copy of either a string or a
> > > list
> > >
> > >
> > > Your recursion stops when xs == [], but when you're stripping characters
> > > off a string,  like 'abc', the remaining portion will be 'bc', then 'c',
> > > than '', but never [] so you 'll never stop.
> > >
> > > Try:
> > >
> > > if xs == []:
> > >     return []
> > > elif xs == '':
> > >     return ''
> > > else:
> > >     ...
> > >
> > >
> > > Gary Herron
> > >
> > >
> > > >
> > > > Thanks,
> > > > Dima

The example you posted won't work with tuples either because they,
like strings, are also immutable. So, the best way to get the posted
code to work (which is a bad way to go about reversing a string, but I
digress) is to cast the input parameter to a list first. The returned
value will always be a list, but you will simply have to convert it
back to the appropriate type when you are done.

What is the purpose if immutability? It allows a value to be hashed. I
don't want to get into a discussion about methods for hashing mutable
types, if you are interested just do a search on the list archives.
Hashing allows for quick comparisons of values, but more importantly
it allows for values to be used as keys for the dict type. This is
very important because, as you will soon find out if you keep learning
the language, all namespaces in python are implemented as dicts.

So... if you want a mutable string, just cast it to a list, do your
operations and cast it back to a string.

Incidentally, the proper method for converting a list of characters to
a string is by using the join method on an empty string.

>>> s = "I am a string"
>>> x = list(s)
>>> x
['I', ' ', 'a', 'm', ' ', 'a', ' ', 's', 't', 'r', 'i', 'n', 'g']
>>> "".join(x)
'I am a string'


Matt


From dmcclouds at gmail.com  Mon Oct 29 00:31:22 2007
From: dmcclouds at gmail.com (D)
Date: Sun, 28 Oct 2007 21:31:22 -0700
Subject: iPod Library
Message-ID: <1193632282.154132.277190@v3g2000hsg.googlegroups.com>

Is there a Python library available that will allow you to read/write
from the database of an iPod 3G and 5G?  Basically, I'm sick of iTunes
and would much rather write a simple program myself.  Thanks.



From kyosohma at gmail.com  Mon Oct 22 09:43:23 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 22 Oct 2007 13:43:23 -0000
Subject: Problems in using wxPython in a multithreaded context
In-Reply-To: <1193046805.616227.232330@k35g2000prh.googlegroups.com>
References: <1193046805.616227.232330@k35g2000prh.googlegroups.com>
Message-ID: <1193060603.808510.9450@t8g2000prg.googlegroups.com>

On Oct 22, 4:53 am, mec2pa... at gmail.com wrote:
> For my C application, I use many interpreters (withh the fonction
> Py_NewInterpreter()). For my needs, I create many GUI with wxPython
> and I have problems. Here is My C Code:
>
> {
>     PyEval_InitThreads();
>     Py_Initialize();
>     PyImport_ImportModule("myModule");//it creates a wxApp and a GUI
>     ......
>
>     Py_NewInterpreter();
>     PyImport_ImportModule("anotherModule");//it should create a new
> wxApp and a new GUI
>
> Unfortunately this code does not work. In fact, My C application which
> use many interpreters is seen by wxPython as a single application, and
> as wxPython is thread safe, it is not possible to create a second
> App.
> I have to use many interpreters to separate variables and to avoid
> links between modules.
>
> What could I do to create many GUI in different interpreters (each GUI
> have to be in a separate environment)???
>
> Thanks.

You should probably check out this thread:

http://groups.google.com/group/comp.lang.python/browse_thread/thread/4ac31cd3a389a4d8/

And this might help as well:

http://www.pyzine.com/Issue001/Section_Articles/article_ThreadingGlobalInterpreter.html

And here's a wxPython specific article on threading:

http://wiki.wxpython.org/LongRunningTasks

You might consider posting to the wxPython mailing list too, as they
can probably help you more.

Mike



From jasondrew72 at gmail.com  Tue Oct 23 12:49:43 2007
From: jasondrew72 at gmail.com (Jason Drew)
Date: Tue, 23 Oct 2007 09:49:43 -0700
Subject: greatest and least of these...
In-Reply-To: <mailman.379.1193155001.13605.python-list@python.org>
References: <mailman.379.1193155001.13605.python-list@python.org>
Message-ID: <1193158183.092190.158210@q5g2000prf.googlegroups.com>

What do you mean when you say the menu doesn't kick in? Do you get an
exception, or does simply nothing happen?

Before the if statements, you should put "print choice" so you can see
what value is being returned by the input function. Also maybe "print
type(choice)" for a bit more inspection.

Speaking of which, you should probably be using something like
"int(raw_input())" instead of just "input()" - if you read the help on
the two functions you should see why.

Hope this helps.

Jason

On Oct 23, 11:56 am, Shawn Minisall <trekker... at comcast.net> wrote:
> I just wrote a program to let the user input a series of whole numbers
> and tell them which is least and which is greatest based off of a menu.
> However, the menu isn't kicking in after they pick a number.  I included
> a while statement for a loop just for the menu and compared it to my
> other programs that have a similar setup and are working, but I'm
> stumped.   Here's the program...
>
> def main():
>
>     #define and initialize variables
>     #choice as int
>     choice = 0
>     #number as int
>     number = 0
>
>     #intro
>     print "WELCOME TO THE GREATEST AND LEAST NUMBER PROGRAM!"
>     print
>
>     #Menu loop
>     while choice != 2:
>         #display menu
>         print "Please choose from the following menu: "
>         print "1. Enter a number"
>         print "2. Exit"
>         print
>
>         #prompt user for their menu choice
>         choice = input("Enter your choice here: ")
>
>         #if statements to determine which choice
>         if choice == 1:
>             nums = []
>             while number >=0:
>                 nums.append(number)
>                 number = input("Please enter a number.")
>
>         elif choice == 2:
>             print "Have a great day!"
>
>             if len(nums) > 0:
>                 print "The smallest number that you entered was:",min(nums)
>                 print "The largest number that you entered was:",max(nums)
>
>         else:
>             #invalid
>             print "Invalid selection.  Enter either one or two."
>             print
>
> Also, if they quit the program with choice #2 and entered numbers, it
> should display the greatest and least of them.  If they just started and
> didn't enter anything and want to quit, I get an error message saying
> UnboundLocalError: local variable 'nums' referenced before assignment.
> Isn't the if statement supposed to keep python from going there since if
> they didn't enter any input, the length of the list should just be zero.




From hat at se-162.se.wtb.tue.nl  Wed Oct 24 10:04:28 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Wed, 24 Oct 2007 16:04:28 +0200
Subject: Better writing in python
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<slrnfhuhcg.n4.horpner@FIAD06.norwich.edu>
Message-ID: <slrnfhuk7c.p8a.hat@se-162.se.wtb.tue.nl>

> On 2007-10-24, Alexandre Badez <alexandre.badez at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this
> code
>
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
>
> I think there is a better way, but I can't see how...

You can do it shorter, not sure that it also qualifies as better....

d = { True : [] , False : [] }
for arg in cls.arguments:
  d[arg == True].append(arg)

return d[True], d[False]

One potential problem here is that 'arg == True' may not be the same as 'if
arg:'. I couldn't come up with a better equivalent expression, maybe one of the
other readers knows more about this?


Albert



From thorsten at thorstenkampe.de  Sat Oct 20 04:13:49 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Sat, 20 Oct 2007 16:13:49 +0800
Subject: Noob: Loops and the 'else' construct
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
	<mailman.196.1192763502.13605.python-list@python.org>
	<MPG.218277463f27c68f989715@news.individual.de>
	<1192793944.775832.295350@e9g2000prf.googlegroups.com>
Message-ID: <MPG.21843998f38e5909989716@news.individual.de>

* Dustan (Fri, 19 Oct 2007 11:39:04 -0000)
> On Oct 19, 3:12 am, Thorsten Kampe <thors... at thorstenkampe.de> wrote:
> > So a for/else loop is exactly the same thing as a for loop with the
> > else clause outside the loop (except for "break")?
> 
> Am I missing something here? It sounds to me like you just described
> two identical constructs.

#
for i in range(10):
    print i
else:
    print 'the end!'
#

is the same else

#
for i in range(10):
    print i
print 'the end!'
#


From kw at codebykevin.com  Fri Oct  5 09:17:24 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Fri, 05 Oct 2007 09:17:24 -0400
Subject: tkinter question
In-Reply-To: <op.tzp40yrqwepdt4@ericb.pragmadev>
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
	<op.tzpugxp2wepdt4@ericb.pragmadev>
	<470629D1.2040404@codebykevin.com>
	<op.tzp40yrqwepdt4@ericb.pragmadev>
Message-ID: <47063964.7000809@codebykevin.com>

Eric Brunel wrote:
> On Fri, 05 Oct 2007 14:10:57 +0200, Kevin Walzer <kw at codebykevin.com> 
> wrote:
>> "expand = 1" ==  "expand=TRUE"--that means the widget resizes itself 
>> when the window is re-sized.
> 
> That's the theory... But what does fill=BOTH means then? And why does 
> expand=1 (or TRUE, or True) is only needed in some cases and not others? 
> And I'm quite sure that sometimes, I use expand=1 and it does exactly 
> what I don't want, and removing it gives the behaviour I want. I've been 
> doing tk/Tkinter stuff for quite a few years now, and I still haven't 
> understood exactly when I should use this option... Quite 
> counter-intuitive, IMHO.
> 
> But then, since I almost never use pack for this kind of layout, I guess 
> it's not really important...

"Fill" refers to the dimension/space that is filled when you expand the 
widget (assuming "expand" is set to true). "fill=x" means the widget 
will expand horizontally (along the x axis). "fill=y" means that the 
widget will expand vertically (along the y axis). "fill=both" means the 
widget will expand in both direction.

Frederick Lundh has a good introduction to the packer here: 
http://effbot.org/tkinterbook/pack.htm

I find "pack" to be more flexible than "grid," so I prefer it for 
complex layouts. "grid" is better for simple layouts.

HTH,
Kevin

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From israelu at elbit.co.il  Mon Oct 22 02:33:55 2007
From: israelu at elbit.co.il (iu2)
Date: Sun, 21 Oct 2007 23:33:55 -0700
Subject: Failure to connect in SimpleXMLRPCServer/xmlrpclib
Message-ID: <1193034835.803633.121600@z24g2000prh.googlegroups.com>


Hi all,

I've copied the example of RPC usage from the Python's doc.
When the client and server were on the same PC ("localhost") (I use
Windows)
it worked ok. But putting the server on a different PC raised the
error:

gaierror: (11001, 'getaddrinfo failed')
The error was raised upion accessing some function of the server,
i.e.,
print s.add_nums(1, 2, 3)  # server registered function

PCs in our organization are accessed by "\\<name>" so I used

s = xmlrpclib.Server(r'http://\\pc_name:8000')
I got the same error when I put some non-existing name.
Trying to remove the double-backslash from the PC's name raised the
error:
error: (10061, 'Connection refused')

I'll appreciate your help on this.

Thanks
iu2



From deets at nospam.web.de  Mon Oct 29 12:31:25 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 29 Oct 2007 17:31:25 +0100
Subject: python2.5 and mysqldb
References: <1193674960.082948.179940@22g2000hsm.googlegroups.com>
Message-ID: <5omg6tFng8kqU1@mid.uni-berlin.de>

writeson wrote:

> Hi all,
> 
> At work we're using python2.3 and I'd like to start getting us moved
> up to python2.5. We run Centos4 which is the free, open source version
> of RedHat Enterprise. I've got python2.5 installed on this machine,
> but am stuck trying to get mysqldb installed and running on this
> machine. I've tried with easy_install and by building from the tar
> file and both return a long list of errors from a gcc compile. I'm not
> sure what to do next to resolve this issue, so if anyone could give me
> some guidance it would be greatly appreciated.

Which we would love to do if you cared to post the long list of errors.
Unless the PSU launches one of it's psychic members to work on your
problem - but they are very usually very busy.

Diez


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct  8 07:15:34 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 08 Oct 2007 13:15:34 +0200
Subject: Problem of Readability of Python
In-Reply-To: <u4ph26658.fsf@rkspeed-rugby.dk>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<470924c8$0$15774$426a34cc@news.free.fr>
	<u4ph26658.fsf@rkspeed-rugby.dk>
Message-ID: <470a112b$0$28457$426a74cc@news.free.fr>

Brian Elmegaard a ?crit :
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
> writes:
> 
>> Use dicts, not lists or tuples:
>>
>> a = dict(name='yadda', val=42)
>> print a['name']
>> print a['val']
> 
> I guess you will then need a list or tuple to store the dicts?

Should be a list then IMHO. But then it's the correct use of a list : an 
homegenous collection.



From byte8bits at gmail.com  Thu Oct 11 11:40:33 2007
From: byte8bits at gmail.com (brad)
Date: Thu, 11 Oct 2007 11:40:33 -0400
Subject: Finding Peoples' Names in Files
In-Reply-To: <1192116309.880026.83240@r29g2000hsg.googlegroups.com>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
Message-ID: <felg5m$rta$1@solaris.cc.vt.edu>

cokofreedom at gmail.com wrote:
> On Oct 11, 5:22 pm, brad <byte8b... at gmail.com> wrote:
>> Crazy question, but has anyone attempted this or seen Python code that
>> does? For example, if a text file contained 'Guido' and or 'Robert' and
>> or 'Susan', then we should return True, otherwise return False.
> 
> Can't you just use the string function .findall() ?
> 

I mean *any* possible person's name... I don't *know* the names 
beforehand :)


From kay.schluehr at gmx.net  Tue Oct  9 11:18:13 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Tue, 09 Oct 2007 08:18:13 -0700
Subject: Mixing Python and C classes in a module
In-Reply-To: <87wstwibfl.fsf@keizer.soze.com>
References: <87wstwibfl.fsf@keizer.soze.com>
Message-ID: <1191943093.138030.167960@57g2000hsv.googlegroups.com>

On Oct 9, 4:56 pm, Stefan Arentz <stefan.are... at gmail.com> wrote:
> Is it possible to mix classes defined in both Python and C in the same
> module? Ideally I would like to be able to do:
>
>  from some.module import MyPythonClass, MyCClass
>
> I guess that would mean that this would look like this on disk:
>
>  some/
>    __init__.py
>    module.py      (contains MyPythonClass)
>    module.so      (contains MyCClass)
>
> But would this work?
>
>  S.

Yes, but you need to write your own importer and customize it using
ihooks.py. The builtin imp module also contains a function new_module
that lets you allow creating a module without any file reference. This
can be returned containg the names of both module.py and module.so.



From phil at freehackers.org  Fri Oct 12 06:57:18 2007
From: phil at freehackers.org (BlueBird)
Date: Fri, 12 Oct 2007 03:57:18 -0700
Subject: Cross-platform GUI development
In-Reply-To: <slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>
Message-ID: <1192186638.902052.85880@i38g2000prf.googlegroups.com>

On Oct 12, 12:30 pm, Nick Craig-Wood <n... at craig-wood.com> wrote:
> > > My question is if Tix is old hat, what is the GUI toolkit I *should*
> > > be using for quick-n-dirty cross platform GUI development? I guess
> > > this is tangentially related to:
>
> > >http://groups.google.com/group/comp.lang.python/browse_thread/thread/...
>
> >  Personnaly, I use PyQt simply because I prefere Qt to Gtk, witch is
> >  much more integrated with all desktop than Gtk.
> >  In fact, your application in Qt on Mac, Win or Linux look like a
> >  native app.

>From my point of view, PyQt is very good. Qt is very actively
developed and maintained, and the PyQt binding is of very good
quality, and fully documented. I have used personally for several
cross-platform projects and it worked like a charm.

I like Qt's approach and extensive documentation. I've found that it
works both for complex GUI as for quick'n dirty. There is usually a
widget to do just what I need so that I can focus on my application
logic instead of on the GUI code.

In short, usage of Qt has driven me to love it.

When looking at the other guis, I always find that the documentation
is under my expectations, or that that things are quite complex to set-
up to get what you need.

On Oct 12, 12:30 pm, Nick Craig-Wood <n... at craig-wood.com> wrote:
> I'd recommend wxPython over those becase
>
> 1) native look and feel on all platforms

You get it with PyQt as well.

> 2) doesn't require expensive licensing for non-commercial apps (QT)

You mean "doesn't require expensive licensing for close source apps".
Open source apps are free of charge. For professional developments, I
bought the Qt license several times in the past because it was worth
the time saved in my opinion.

> 3) Isn't a pain to install on windows (GTK)

You get it with Qt as well. I was able to use it even as a windows
newbie.




From panguohualove at sina.com  Fri Oct 19 07:27:41 2007
From: panguohualove at sina.com (panguohua)
Date: Fri, 19 Oct 2007 04:27:41 -0700
Subject: a good website for softwares,sports,movies and music ,sex etc.
Message-ID: <1192793261.911816.161190@z24g2000prh.googlegroups.com>

www.space666.com



nice



From carsten at uniqsys.com  Thu Oct 18 14:17:29 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Thu, 18 Oct 2007 14:17:29 -0400
Subject: Convert string to command..
In-Reply-To: <87lka01f8k.fsf@mulj.homelinux.net>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
	<1192724835.765738.141790@q5g2000prf.googlegroups.com>
	<87przc1im7.fsf@mulj.homelinux.net>
	<1192726872.921589.249670@i38g2000prf.googlegroups.com>
	<87lka01f8k.fsf@mulj.homelinux.net>
Message-ID: <1192731449.3402.25.camel@dot.uniqsys.com>

On Thu, 2007-10-18 at 19:53 +0200, Hrvoje Niksic wrote:
> Don't
> forget to also use a bind variable, something like:
> 
> cursor.execute("INSERT INTO cache2 VALUES (?)", a)

I second the advice, but that code won't work. The bind parameters must
be a sequence, and psycopg2 (unfortunately) uses %s for parameter
markers, instead of the SQL standard question mark. So the actual code
would be

cursor.execute("INSERT INTO cache2 VALUES (%s)", (a,) )

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From steven.bethard at gmail.com  Mon Oct 22 14:17:04 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 22 Oct 2007 12:17:04 -0600
Subject: Python-URL! - weekly Python news and links (Oct 22)
In-Reply-To: <ffia12$lfc$1@lairds.us>
References: <ffia12$lfc$1@lairds.us>
Message-ID: <471CE920.7080507@gmail.com>

Gabriel Genellina wrote:
> "I actually do a lot of unit testing. I find it both annoying and highly
> necessary and useful." - Steven Bethard
>     http://groups.google.com/group/comp.lang.python/msg/4df60bdff72540cb

That quote is actually due to Dan McLeran. A very good quote though.

Steve


From duncan.booth at invalid.invalid  Tue Oct  2 03:54:52 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 2 Oct 2007 07:54:52 GMT
Subject: Select as dictionary...
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
	<47010e97$0$7777$426a74cc@news.free.fr>
	<1191258548.820547.123560@k79g2000hse.googlegroups.com>
	<1191258828.206660.21570@22g2000hsm.googlegroups.com>
Message-ID: <Xns99BD5AA2DA7BAduncanbooth@127.0.0.1>

Abandoned <besturk at gmail.com> wrote:

>  ( I don't want to use FOR and APPEND because the
> query have 2 million result and i want to speed)
> 

How many times do you plan on doing this? On my system I just timed adding 
2 million elements to a dictionary: it took 0.35 seconds. Appending 2 
million elements to a list took 0.43 seconds.

Unless you really do need to repeat this operation many many many times 
then just write the obvious code instead of wasting your (and our) time 
trying to micro-optimise.


From NikitaTheSpider at gmail.com  Thu Oct  4 12:14:40 2007
From: NikitaTheSpider at gmail.com (Nikita the Spider)
Date: Thu, 04 Oct 2007 12:14:40 -0400
Subject: Why doesn't Python's "robotparser" like Wikipedia's "robots.txt"
	file?
References: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>
	<mailman.1392.1191334209.2658.python-list@python.org>
	<ActMi.30614$eY.11375@newssvr13.news.prodigy.net>
Message-ID: <NikitaTheSpider-CF18AC.12144004102007@johnf2.biosci.ohio-state.edu>

In article <ActMi.30614$eY.11375 at newssvr13.news.prodigy.net>,
 John Nagle <nagle at animats.com> wrote:

> Filip Salomonsson wrote:
> > On 02/10/2007, John Nagle <nagle at animats.com> wrote:
> >> But there's something in there now that robotparser doesn't like.
> >> Any ideas?
> > 
> > Wikipedia denies _all_ access for the standard urllib user agent, and
> > when the robotparser gets a 401 or 403 response when trying to fetch
> > robots.txt, it is equivalent to "Disallow: *".
> > 
> > http://infix.se/2006/05/17/robotparser
> 
>      That explains it.  It's an undocumented feature of "robotparser",
> as is the 'errcode' variable.  The documentation of "robotparser" is
> silent on error handling (can it raise an exception?) and should be
> updated.

Hi John,
Robotparser is probably following the never-approved RFC for robots.txt 
which is the closest thing there is to a standard. It says, "On server 
response indicating access restrictions (HTTP Status Code 401 or 403) a 
robot should regard access to the site completely restricted."
http://www.robotstxt.org/wc/norobots-rfc.html

If you're interested, I have a replacement for the robotparser module 
that works a little better (IMHO) and which you might also find better 
documented. I'm using it in production code:
http://nikitathespider.com/python/rerp/

Happy spidering

-- 
Philip
http://NikitaTheSpider.com/
Whole-site HTML validation, link checking and more


From epost2 at gmail.com  Mon Oct  8 10:11:53 2007
From: epost2 at gmail.com (Bruce)
Date: Mon, 08 Oct 2007 07:11:53 -0700
Subject: changes on disk not visible to script ?
In-Reply-To: <mailman.1667.1191851919.2658.python-list@python.org>
References: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
	<mailman.1667.1191851919.2658.python-list@python.org>
Message-ID: <1191852713.859771.109190@19g2000hsx.googlegroups.com>

On 8 Okt, 15:56, Richie Hindle <ric... at entrian.com> wrote:
> [Bruce]
>
> > f.close()
> > cmd = "echo %s | %s"%(argument_file,the_program)
>
> Either: you are a VB programmer and you've actually typed "f.close" rather
> than "f.close()",
>
> Or: you meant "type" (or "cat") rather than "echo",
>
> Or: I need a new crystal ball.  8-)
>
> --
> Richie Hindle
> ric... at entrian.com

You are right, I forgot the () in f.close() !
thanks for pointing that out.

VB programmer!? Thats really harsh..



From DustanGroups at gmail.com  Tue Oct 30 07:11:39 2007
From: DustanGroups at gmail.com (Dustan)
Date: Tue, 30 Oct 2007 11:11:39 -0000
Subject: A Python 3000 Question
In-Reply-To: <472681dd$0$4375$9b4e6d93@newsspool4.arcor-online.net>
References: <fg5fku$5c1$1@solaris.cc.vt.edu><87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu>
	<5on4b6Fnq6p5U2@mid.individual.net>
	<472681dd$0$4375$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <1193742699.561161.98780@19g2000hsx.googlegroups.com>

On Oct 29, 7:59 pm, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> Bjoern Schliessmann wrote:
> > The inconsistencies arise, IMHO, if an OO language introduces
> > non-object types for performance reasons, after that gets wrapper
> > classes to wrap those primitives, and even later gets the ability
> > to automatically cast a primitive into a wrapper class instance.
> > That's just ugly.
>
> If you mean Java, then just say Java.

There was no need to; it was heavily implied.



From nebulous99 at gmail.com  Tue Oct  9 21:05:11 2007
From: nebulous99 at gmail.com (nebulous99 at gmail.com)
Date: Wed, 10 Oct 2007 01:05:11 -0000
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
References: <87tzt3ihev.fsf@kobe.laptop><m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
Message-ID: <1191978311.987341.271000@r29g2000hsg.googlegroups.com>

On Oct 8, 7:32 am, Joost Kremers <joostkrem... at yahoo.com> wrote:
> bbo... at gmail.com wrote:
> > Don't both "man" and those words for measurement come ultimately from
> > words for "hand" (similarly to words like "manual", as in labor)?
>
> no.

Do not bluntly contradict me in public.

> "manual" is derived from latin "manus" meaning "hand". the word "man"
> is related to (though not directly derived from) "mind", and the latin word
> "mens", which means "mind".

So you assert, but "man" bears a much closer resemblance to "manus"
than it does to "mens".

Or are you proposing that the plural word "men" came first? That would
be ... odd.



From erik at myemma.com  Fri Oct 12 14:31:43 2007
From: erik at myemma.com (Erik Jones)
Date: Fri, 12 Oct 2007 13:31:43 -0500
Subject: PEP idea: Instrumented Python
In-Reply-To: <20071012171013.8162.1037189775.divmod.quotient.22147@ohm>
References: <20071012171013.8162.1037189775.divmod.quotient.22147@ohm>
Message-ID: <B90A8242-D59B-402E-BA36-A80DFD63CA1D@myemma.com>

On Oct 12, 2007, at 12:10 PM, Jean-Paul Calderone wrote:

> On Fri, 12 Oct 2007 11:33:11 -0500, Erik Jones <erik at myemma.com>  
> wrote:
>> [snip]
>>
>> This got me thinking about building a module that could be included
>> by projects that creates a socket and responds to messages on that
>> socket in a separate thread from the main app so that you can connect
>> to the app and explore its current state.  Take a look at the
>> evalexception module in Paste to see what he does.
>>
>
> Or manhole in Twisted.

Thanks for the tip!

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From exarkun at divmod.com  Thu Oct 25 06:50:47 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Thu, 25 Oct 2007 06:50:47 -0400
Subject: Adding idle timeout capabilities to asyncore
In-Reply-To: <1193287572.069324.91860@q3g2000prf.googlegroups.com>
Message-ID: <20071025105047.8162.148263643.divmod.quotient.27568@ohm>

On Thu, 25 Oct 2007 04:46:12 -0000, Josiah Carlson <josiah.carlson at gmail.com> wrote:
> [snip]
>But really, since I already wrote code that handles *all* of
>the timeout handling with a *single* time.time() call, and that also
>generally minimizes all explicit function calls, I'm not sure that
>your testing examples were ultimately germane to the conversation (how
>would one handle timeouts in asyncore).  Or maybe it's just late and
>I've had a long day :/ .

That's okay.  I wasn't trying to be germane to the asyncore timeout handling
conversation.

Jean-Paul


From smithsm at samuelsmith.org  Mon Oct 29 17:48:32 2007
From: smithsm at samuelsmith.org (Samuel M. Smith)
Date: Mon, 29 Oct 2007 15:48:32 -0600
Subject: Help ctypes on arm linux not compile
Message-ID: <F6C48E66-B5CF-4E56-9879-63BA32797D04@samuelsmith.org>

I have built python 1.5.1 from source for an embedded ARM9 debian  
linux Sarge distribution but
ctypes doesn't build.  Anybody have any idea what the problem is? Do  
I have to have the libffi package
installed.
See my errors below.
I looked and ffi.h exists in three places

/usr/local/src/Python-2.5.1/Modules/_ctypes/libffi_arm_wince/ffi.h
/usr/local/src/Python-2.5.1/Modules/_ctypes/libffi_msvc/ffi.h
/usr/local/src/Python-2.5.1/build/temp.linux-armv4l-2.5/libffi/ 
include/ffi.h


with two different definitions for ffi_closure
typedef struct {
   char tramp[FFI_TRAMPOLINE_SIZE];
   ffi_cif   *cif;
   void     (*fun)(ffi_cif*,void*,void**,void*);
   void      *user_data;
} ffi_closure __attribute__((aligned (8)));

typedef struct {
   char tramp[FFI_TRAMPOLINE_SIZE];
   ffi_cif   *cif;
   void     (*fun)(ffi_cif*,void*,void**,void*);
   void      *user_data;
} ffi_closure;

is the __attribute__ syntax causing a problem


building '_ctypes' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict- 
prototypes -fPIC -I. -I/usr/local/src/Python-2.5.1/./Include -Ibuild/ 
temp.linux-armv4l-2.5/libffi/include -Ibuild/temp.linux-armv4l-2.5/ 
libffi -I/usr/local/src/Python-2.5.1/Modules/_ctypes/libffi/src -I./ 
Include -I. -I/usr/local/include -I/usr/local/src/Python-2.5.1/ 
Include -I/usr/local/src/Python-2.5.1 -c /usr/local/src/Python-2.5.1/ 
Modules/_ctypes/_ctypes.c -o build/temp.linux-armv4l-2.5/usr/local/ 
src/Python-2.5.1/Modules/_ctypes/_ctypes.o
In file included from /usr/local/src/Python-2.5.1/Modules/_ctypes/ 
_ctypes.c:126:
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:71: error:  
syntax error before "ffi_closure"
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:71: warning: no  
semicolon at end of struct or union
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:78: error:  
syntax error before '}' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:78: warning:  
type defaults to `int' in declaration of `ffi_info'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:78: warning:  
data definition has no type or storage class
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:94: error:  
syntax error before "ffi_info"
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:94: warning: no  
semicolon at end of struct or union
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:101: error:  
conflicting types for `restype'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:76: error:  
previous declaration of `restype'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:109: error:  
syntax error before '}' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:109: warning:  
type defaults to `int' in declaration of `CFuncPtrObject'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:109: warning:  
data definition has no type or storage class
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:165: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:168: warning:  
type defaults to `int' in declaration of `AllocFunctionCallback'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:168: warning:  
data definition has no type or storage class
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`c_void_p_from_param':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1330: error:  
`func' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1330: error:  
(Each undeclared identifier is reported only once
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1330: error:  
for each function it appears in.)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1331: error:  
syntax error before ')' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2470: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2471: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_set_errcheck':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2472: error:  
`ob' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2477: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2484: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2485: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_get_errcheck':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2486: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2495: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2496: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_set_restype':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2497: error:  
`ob' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2498: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2520: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2521: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_get_restype':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2523: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2539: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2540: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_set_argtypes':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2543: error:  
`ob' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2544: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2562: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2563: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_get_argtypes':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2565: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_FromDll':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2747: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2802: error:  
syntax error before ')' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_new':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2867: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2870: error:  
`thunk' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2939: error:  
syntax error before ')' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3040: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3043: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`_build_callargs':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3044: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3054: error:  
`poutmask' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3055: error:  
`pinoutmask' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3056: error:  
`pnumretvals' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3064: error:  
`inargs' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3113: error:  
`kwds' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3268: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3269: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_call':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3274: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3329: error:  
`inargs' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3329: error:  
`kwds' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3398: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3399: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_traverse':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3400: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3400: warning:  
implicit declaration of function `visit'
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3400: error:  
`arg' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3407: error:  
`visit' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3411: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3412: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_clear':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3413: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3431: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3432: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_dealloc':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3433: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3438: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3439: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_repr':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3448: error:  
`self' undeclared (first use in this function)




**********************************************************************
Samuel M. Smith Ph.D.
2966 Fort Hill Road
Eagle Mountain, Utah 84005-4108
801-768-2768 voice
801-768-2769 fax
**********************************************************************
"The greatest source of failure and unhappiness in the world is
giving up what we want most for what we want at the moment"
**********************************************************************


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/525198a2/attachment.html>

From jhmsmits at gmail.com  Tue Oct  2 09:26:07 2007
From: jhmsmits at gmail.com (SanPy)
Date: Tue, 02 Oct 2007 06:26:07 -0700
Subject: access __doc__ from within function without reference to function name
Message-ID: <1191331567.944636.263140@y42g2000hsy.googlegroups.com>

The subject of this message might be a little cryptic, so here's an
example of what I mean:

def foo():
    """doc string of foo"""
    print foo.__doc__

>>> foo()
doc string of foo

What I want to know is whether it is possible to call __doc__ against
some builtin method, like __func__ or something like that. So calling
__doc__ without the functions name, something like this:

def foo():
    """doc string of foo"""
    print __func__.__doc__ # pseudo code

So basically, my question is: is there a way to access a function from
within itself without using its name?

Regards, Sander.



From deets at nospam.web.de  Mon Oct 29 07:44:24 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 29 Oct 2007 12:44:24 +0100
Subject: SQLite3; weird error
References: <1193657924.375787.287740@o80g2000hse.googlegroups.com>
Message-ID: <5olvcoFndjdvU1@mid.uni-berlin.de>

TYR wrote:

> Has anyone else experienced a weird SQLite3 problem?
> 
> Going by the documentation at docs.python.org, the syntax is as
> follows:
> foo = sqlite3.connect(dbname) creates a connection object representing
> the state of dbname and assigns it to variable foo. If dbname doesn't
> exist, a file of that name is created.
> 
> To do anything with it, you then need to create a cursor object by
> calling foo's method cursor (bar = foo.cursor).

is that really from the docs? If yes, they are buggy.

The problem is pretty obvious: foo.cursor is NOT calling a method cursor on
foo. It's a reference to that very method.

So instead write

bar = foo.cursor()

and your done.

> You can now pass an SQL query or command to the DB by calling the
> cursor object's method execute() with the SQL query as a quoted
> statement.
> 
> (bar.execute("SELECT FROM squid WHERE squamous=True")
> 
> And then do other stuff.
> 
> Fine. When I call the cursor object, though, I get an AttributeError;
> ('builtinfunction_or_method object has no attribute 'execute')

Which is a pretty acute description of the error: you are trying to get an
attribute (execute, which you ultimately expect to be a method) from a
method.

Diez


From bignose+hates-spam at benfinney.id.au  Tue Oct 16 21:36:48 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 17 Oct 2007 11:36:48 +1000
Subject: why doesn't have this list a "reply-to" ?
References: <mailman.102.1192584482.13605.python-list@python.org>
Message-ID: <87odey1pzj.fsf@benfinney.id.au>

Dick Crepeau <rhc2 at twcny.rr.com> writes:

> It seems to me the original question was how can I reply to a posted
> message.

By choosing whether you want to "reply to the author", or "reply to
the list". (Every message from the mailing list automatically provides
the correct infromation to make both options work correctly.) Then
invoking the appropriate function in your mail user program.

If your mail program has only "reply", then that's likely "reply to
the author". You need to find out how your mail program implements
"reply to the list", or pressure your provider if it's not implemented
at all.

-- 
 \       "One of the most important things you learn from the internet |
  `\   is that there is no 'them' out there. It's just an awful lot of |
_o__)                                            'us'." ?Douglas Adams |
Ben Finney


From narutocanada at gmail.com  Fri Oct 19 22:00:11 2007
From: narutocanada at gmail.com (narutocanada at gmail.com)
Date: Fri, 19 Oct 2007 19:00:11 -0700
Subject: where do I need to "tab"?
Message-ID: <1192845611.102983.310980@i38g2000prf.googlegroups.com>

hi

I'm following the python's translation of SICP:
http://codepoetics.com/wiki/index.php?title=Topics:SICP_in_other_languages:Python:Chapter_1
...
a = 3
b = a + 1
print a + b + (a * b)
print (a == b)
print b if ((b > a) and (b < (a * b))) else a

everything was fine till this point, and I got:
    print b if ((b > a) and (b < (a * b))) else a
             ^
SyntaxError: invalid syntax

Is there a good rule that I quickly memorize as to "when to tab"?
Thanks.



From duncan.booth at invalid.invalid  Mon Oct  1 04:05:47 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 1 Oct 2007 08:05:47 GMT
Subject: Function return a dictionary
References: <mailman.1329.1191224914.2658.python-list@python.org>
Message-ID: <Xns99BC5C8D26DA5duncanbooth@127.0.0.1>

Boris Mok <borismok at iwow.com.sg> wrote:

> Hi all,
> 
> I'm doing a function which needs return an arrary -- or more specially a 
> dictionary data type.
> I have a sample like this
> 
> def AFC():
>   v["a"] = 1
>   return v
> 
> v = AFC()
> print v["a"]
> 
> with error
> NameError: global name 'v' is not defined
> 
> how do I go about it?
> 
At some point you have to initialise v to a dictionary, Python isn't going 
to guess for you. e.g.

def AFC():
  v = {}
  v["a"] = 1
  return v


From nick.bastin at gmail.com  Fri Oct  5 00:12:42 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Fri, 5 Oct 2007 00:12:42 -0400
Subject: Python 3.0 migration plans?
In-Reply-To: <fdhero$4vm$1@sea.gmane.org>
References: <fdhero$4vm$1@sea.gmane.org>
Message-ID: <66d0a6e10710042112q22889b0fw9dcb75ddc4586e1f@mail.gmail.com>

On 9/27/07, Steve Holden <steve at holdenweb.com> wrote:
> I wondered if a straw poll could get some idea of readers' thoughts
> about when they will be migrating to 3.0 on, so I used the new widget on
> Blogger to add a poll for that.
>
> I'd appreciate if if you would go to
>
>    http://holdenweb.blogspot.com/
>
> and register your vote on your intended migration timescale.

The options should have all been relative to the release date.
Options one and two might very well be the same (yes, I know, but shit
happens).  Also, you're relying on people knowing the current
timeframe for 3.0.

--
Nick


From thermostat at gmail.com  Wed Oct 10 15:34:58 2007
From: thermostat at gmail.com (Dan)
Date: Wed, 10 Oct 2007 19:34:58 -0000
Subject: How can Python print the value of an attribute but complain it
	does not exist?
In-Reply-To: <1192043025.291748.198740@19g2000hsx.googlegroups.com>
References: <1192043025.291748.198740@19g2000hsx.googlegroups.com>
Message-ID: <1192044898.197028.262740@v3g2000hsg.googlegroups.com>

On Oct 10, 3:03 pm, Emre  Sevinc <emre.sev... at gmail.com> wrote:
> Hello,
>
> I'm a Python newbie and I'm having a strange trouble with the
> following code:
>
> generatefeedvector-debug.py
> ===============================================================
> import feedparser
> import re
>
> def getwordcounts(url):
>     # Parse the feed
>     d = feedparser.parse(url)
>     wc = {}
>
>     # Loop over all the entries
>     for e in d.entries:
>         if 'summary' in e: summary = e.summary
>         else: summary = e.description
>
>         # Extract a list of words
>         words = getwords(e.title + ' ' + summary)
>         for word in words:
>             wc.setdefault(word, 0)
>             wc[word] += 1
>
>     print d.feed.title
>     return d.feed.title
>
> def getwords(html):
>     # Remove all the HTML tags
>     txt = re.compile(r'<[^>]+>').sub('', html)
>
>     # Split words by all non-alpha characters
>     words = re.compile(r'[^A-Z^a-z]+').split(txt)
>
>     # Convert to lowercase
>     return [word.lower() for word in words if word != '']
>
> apcount = {}
> wordcounts = {}
> for feedurl in file('feedlist1-2.txt'):
>     title = getwordcounts(feedurl)
> ==================================================================
>
> When I run it:
>
> $ python generatefeedvector-debug.py
> Signal vs. Noise
> Traceback (most recent call last):
>   File "generatefeedvector-debug.py", line 37, in ?
>     title = getwordcounts(feedurl)
>   File "generatefeedvector-debug.py", line 21, in getwordcounts
>     print d.feed.title
>   File "/var/lib/python-support/python2.4/feedparser.py", line 236, in
> __getattr__
>     raise AttributeError, "object has no attribute '%s'" % key
> AttributeError: object has no attribute 'title'
>
> The strange thing is that it DOES print the value d.feed.title then
> complains AttributeError: object has no attribute 'title'. What am I
> doing wrong?
>
> The file feedlist1-2.txt includes just a single line:
>
> $ cat feedlist1-2.txthttp://feeds.feedburner.com/37signals/beMH
>
> I'm using Python 2.4 on Debian GNU/Linux.
>
> Any ideas about how to fix this error message?
>
> Regards,
>
> --
> Emre Sevinc

This is a bit of a guess, but prehaps the file has a blank line, so
the first url is fine, but the second (non-existant) url doesn't have
a title. You can test this by doing:

> for feedurl in file('feedlist1-2.txt'):
>    if feedurl.strip():
>       title = getwordcounts(feedurl)

-Dan



From abarun22 at gmail.com  Mon Oct 29 16:03:03 2007
From: abarun22 at gmail.com (abarun22 at gmail.com)
Date: 29 Oct 2007 13:03:03 -0700
Subject: swig-python -> shared (vs) static libraries
Message-ID: <1193672993.062544.68770@i38g2000prf.googlegroups.com>

HI
I am new to SWIG & Python and right now i am in the process of
wrapping some "C" functionalities present in a static library for
python. I do have my C file "name.c" which just contains some helper
functions.
I tried to link my object files (e.g name.o & name_wrap.o) with the
static libraries (whose functionalities need to be wrapped) to form a
shared library that can be imported from Python. While doing so i
cannot be able to access the C data structure from Python and i got
all values as zero. I work in Linux gcc version.
I created my shared object like this:
ld -G name.o name_wrap.o -o _name.so -Bstatic -lfoo1 -lfoo2 -lfoo3.
On the other hand to dig more in to this i tried to simulate the
static libraries with simple dummy code in my file "name.c" so that i
can avoid linking the static libraries. This case i could be able to
retrieve the vaues of the data structure. I wonder if the problem
could be due to linking of the static libraries to create the shared
object.
Any body experienced the same problem or having related ideas pls help
me.
Best regards
Arun



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct  8 08:50:53 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 12:50:53 -0000
Subject: Really basic problem
References: <mailman.1663.1191838188.2658.python-list@python.org>
Message-ID: <13gk9tdonh6gn90@corp.supernews.com>

On Mon, 08 Oct 2007 12:09:28 +0200, Andreas Tawn wrote:

> The issue is that 0.1 etc don't have an exact representation as floating
> point.
> 
> Interestingly:
> 
>>>> 0.10000000000000001 == 0.1
> True
>>>> 0.30000000000000004 == 0.3
> False
> 
> I guess this means that Python has some concept of "close enough", but
> I'll have to defer to someone more knowledgeable to explain that.

No, not really, except in the sense that any floating point calculation 
will be necessarily imprecise in that sense.

The first example: when you type 0.1 as a float, it can't be stored as 
exactly 1/10 in binary, so you actually get a tiny bit more than 1/10:

>>> 0.1
0.10000000000000001

That means that whether you type 0.1 or 0.10000000000000001 makes no 
difference. Hence the following result:

>>> 0.10000000000000001 == 0.1
True

It isn't that Python looks at 0.10000000000000001 and 0.1 and says "well, 
the difference is only 0.00000000000000001 which is too tiny to worry 
about, so they're equal". Proof by example:

>>> 0.10000000000000001 == 0.10000000000000002
False


The second example: when you type 0.3, it too can't be represented 
precisely in binary as 3/10, and so you get this:

>>> 0.3
0.29999999999999999
>>> 0.30000000000000001
0.29999999999999999

So typing 0.3 is the same as typing 0.29999999999999999 or 
0.30000000000000001 as far as floating point binary values are concerned.



(Although note that these results are platform dependent. Your mileage 
may vary.)



-- 
Steven


From bj_666 at gmx.net  Sat Oct 27 15:59:07 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 27 Oct 2007 19:59:07 GMT
Subject: xmpfilter-a-like for python (code annotation)
References: <1193505013.821461.149470@d55g2000hsg.googlegroups.com>
	<5ohaonFmgu6mU3@mid.uni-berlin.de>
	<1193507826.361771.151800@50g2000hsm.googlegroups.com>
Message-ID: <5ohjkbFmgu6mU6@mid.uni-berlin.de>

On Sat, 27 Oct 2007 17:57:06 +0000, thattommyhallll at gmail.com wrote:

> On Oct 27, 6:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>> On Sat, 27 Oct 2007 17:10:13 +0000, thattommyhal... at gmail.com wrote:
>> >http://eigenclass.org/hiki/xmpfilter
>> > looks cool , anything like this for python? any reason that we culd
>> > not do simmilar ?
>>
>> I just read that page and am a little confused.  This program adds
>> assertions based on the actual code, i.e. if the code is wrong it
>> nonetheless adds assertions that don't fail.  I always thought one writes
>> assertions to test what the code should do and not what it actually does!?
> 
> Its more the inline annotation lie here http://eigenclass.org/hiki.rb?xmpfilter#l4
> that I wanted

Can you give *useful* examples?

Ciao,
	Marc 'BlackJack' Rintsch


From mensanator at aol.com  Mon Oct  8 13:41:03 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 10:41:03 -0700
Subject: pytz has so many timezones!
In-Reply-To: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
Message-ID: <1191865263.572366.270820@y42g2000hsy.googlegroups.com>

On Oct 8, 2:32 am, Sanjay <skpate... at gmail.com> wrote:
> Hi All,
>
> I am using pytz.common_timezones to populate the timezone combo box of
> some user registration form. But as it has so many timezones (around
> 400),

There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
+12.

A handful of countries set their clocks offset by a half hour,
but those aren't timezones.

And there is one country whose clock setting is the product of
a diseased mind (GMT+13), but that isn't a timezone either.

The 400 you're seeing are duplications based on locality. Of the 86
shown in Windows, all but 33 are dulplicate references to the same
timezones.

For example, Windows has seperate listings for

Central America
Central Time (US & Canada)
Guadalahara, Mexico City, Monterry - New
Guadalahara, Mexico City, Monterry - Old
Saskatchewan

but they are all GMT-6

> it is a bit confusing to the users. Is there a smaller and more
> practical set?

Filter the list by location.

> If not, some suggestions on how to handle the
> registration form effectively would help me a lot.
>
> thanks
> Sanjay




From rcdailey at gmail.com  Thu Oct  4 12:54:32 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 4 Oct 2007 11:54:32 -0500
Subject: RegEx question
In-Reply-To: <1191515675.19400.39.camel@skinner.madoff.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
Message-ID: <496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>

On 10/4/07, Adam Lanier <adam at krusty.madoff.com> wrote:
>
>
> try @param\[(in|out)\] \w+
>

This didn't work either :(

The tool using this regular expression (Comment Reflower for VS2005) May be
broken...
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/1424ef1f/attachment.html>

From wizzardx at gmail.com  Thu Oct  4 08:47:12 2007
From: wizzardx at gmail.com (David)
Date: Thu, 4 Oct 2007 14:47:12 +0200
Subject: HELP me Am very new one To python
In-Reply-To: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>
References: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>
Message-ID: <18c1e6480710040547j57fb4e99m5859abaa59b5cb4d@mail.gmail.com>

>
> how to configure apache where i want to configure .
> if any files want to copy in to apache folder, wahts the procedure to
> start the coding pls help me am very very beginner pls spend some time
> to teach how to do that.please plaes
>

Unlike PHP, Python is not primarily a web programming language. What
you installed was the standard interpreter which allows you to run
scripts outside of a web server. It won't integrate into apache
automatically.

What you're probably looking for is an apache module that lets you run
python scripts.

This link may be useful: http://sourceforge.net/projects/spyce/


From bbxx789_05ss at yahoo.com  Sat Oct  6 00:52:46 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: Fri, 05 Oct 2007 21:52:46 -0700
Subject: Test doubles (stubs and mocks) for unit testing (was: unit
	testing)
In-Reply-To: <877im1qio2.fsf_-_@benfinney.id.au>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<1191604175.903042.228140@g4g2000hsf.googlegroups.com>
	<877im1qio2.fsf_-_@benfinney.id.au>
Message-ID: <1191646366.288345.237800@o3g2000hsb.googlegroups.com>

On Oct 5, 4:51 pm, Ben Finney <bignose+hates-s... at benfinney.id.au>
wrote:
>

Thanks.



From software at ginstrom.com  Mon Oct 22 18:06:00 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Tue, 23 Oct 2007 07:06:00 +0900
Subject: ignoring chinese characters parsing xml file
In-Reply-To: <851acc320710221224w55c9421cpf1973d0658ad84b4@mail.gmail.com>
References: <851acc320710221224w55c9421cpf1973d0658ad84b4@mail.gmail.com>
Message-ID: <098901c814f7$bc907300$0203a8c0@MOUSE>

> On Behalf Of Fabian Lopez
> like ^?u?u?????????w.?????L???????? or ????????????... The problem is that
I get 

Just thought I'd point out here that the second string is Japanese, not
Chinese.

>From your second post, it appears that you've parsed the text without
problems -- it's when you go to print them out that you get the error. This
is no doubt because your default encoding can't handle Chinese/Japanese
characters. I can imagine several ways to fix this, including encoding the
text in utf-8 for printout.

If you really want to strip out Asian characters, here's a way:

def strip_asian(text):
    """"Returns the Unicode string text, minus any Asian characters"""
    return u''.join([x for x in text if ord(x) < 0x3000])



Regards,
Ryan Ginstrom



From gagsl-py2 at yahoo.com.ar  Fri Oct 19 19:14:22 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 20:14:22 -0300
Subject: traceback over C API and PyObject_CallObject
References: <pan.2007.10.19.16.53.02.646588@hotmail.com>
Message-ID: <op.t0gv580tx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 13:53:03 -0300, Sami Vaisanen <ensiferum_ at hotmail.com>  
escribi?:

> Hello group,
>
> I'm trying to get the Python exception information (message and  
> traceback)
> stored into a string in my C++ code. However all i get back is the string
> "None".

This is what you get (actually "None\n") when there is no error set.

> All the checks pass and all pointers get a value from the python
> API calls. I've also tried with a different function such as
> PyObject_CallFunctionObjArgs but the result is the same.

Since you already know the three components (type, value, trace), I'd use  
traceback.format_exception instead (and remove the PyErr_Restore call -  
I'm unsure if it works the way you expect it).
In this case you have to pass three arguments, so yes, use  
PyObject_CallFunctionObjArgs (remember the final NULL). Beware:  
format_exception returns a formatted list, not a string. You have to  
concatenate all the elements (either using ''.join or repeteadly calling  
PyString_Concat)

> void get_python_exception(string& message, string& traceback)
> {
>     GIL g;
>    PyObject* type  = NULL;
>     PyObject* value = NULL;
>     PyObject* trace = NULL;
>    PyErr_Fetch(&type, &value, &trace);
>    py_ref ref_type(type);
>     py_ref ref_value(value);
>     py_ref ref_trace(trace);
>    py_ref name(PyString_FromString("traceback"));
>     py_ref module(PyImport_Import(name.get()));
>     if (module)
>     {
>         py_ref fun(PyObject_GetAttrString(module.get(), "format_exc"));
>         if (fun)
>         {
>             PyErr_Restore(type, value, trace);
>             ref_type.release();
>             ref_value.release();
>             ref_trace.release();
>            py_ref ret(PyObject_CallObject(fun.get(), NULL));
>             if (ret && PyString_Check(ret.get()))
>             {
>                 char* str = PyString_AsString(ret.get());
>                 message = str;
>                 traceback = "traceback not available";
>                 return;
>             }
>         }
>     }
>     message   = "message not available";
>     traceback = "traceback not available";
> }




-- 
Gabriel Genellina



From MDiPierro at cti.depaul.edu  Tue Oct 16 14:17:36 2007
From: MDiPierro at cti.depaul.edu (DiPierro, Massimo)
Date: Tue, 16 Oct 2007 13:17:36 -0500
Subject: re.sub
In-Reply-To: <4715010B.7080203@tim.thechases.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>,
	<4715010B.7080203@tim.thechases.com>
Message-ID: <C1AA20CAC1E41647BFF1D41215EDD4755C48F84DCE@wagner.cti.depaul.edu>

It is the fisrt line that is wrong, the second follows from the first, I agree.

________________________________________
From: Tim Chase [python.list at tim.thechases.com]
Sent: Tuesday, October 16, 2007 1:20 PM
To: DiPierro, Massimo
Cc: python-list at python.org; Berthiaume, Andre
Subject: Re: re.sub

> Even stranger
>
>  >>> re.sub('a', '\\n','bab')
> 'b\nb'
>  >>> print re.sub('a', '\\n','bab')
> b
> b

That's to be expected.  When not using a print statement, the raw
evaluation prints the representation of the object.  In this
case, the representation is 'b\nb'.  When you use the print
statement, it actually prints the characters rather than their
representations.  No need to mess with re.sub() to get the behavior:

   >>> s = 'a\nb'
   >>> s
   'a\nb'
   >>> print s
   a
   b
   >>> print repr(s)
   'a\nb'

-tkc


From rdm at rcblue.com  Tue Oct 30 00:46:19 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 21:46:19 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <op.t0zlbuo2x6zn5v@gabriel2.softlabbsas.com.ar>
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
	<20071029165317.7009D1E4012@bag.python.org>
	<20071029174011.D22641E4029@bag.python.org>
	<op.t0zchnivx6zn5v@gabriel2.softlabbsas.com.ar>
	<20071030002246.B9ED91E401F@bag.python.org>
	<op.t0zlbuo2x6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <20071030044632.B85231E4007@bag.python.org>

At 06:34 PM 10/29/2007, Gabriel Genellina wrote:
>En Mon, 29 Oct 2007 21:22:36 -0300, Dick Moores <rdm at rcblue.com> escribi?:
>
> > At 03:23 PM 10/29/2007, Gabriel Genellina wrote:
> >> En Mon, 29 Oct 2007 14:39:49 -0300, Dick Moores <rdm at rcblue.com>
> >> escribi?:
> >>
> >>
> >> At least add a small sleep() call inside the loop, to be nice to other
> >> running processes:
> >>
> >
> > Yes, that makes a major difference in the CPU
> > usage percentage on my computer. In fact I can't
> > even tell that there is anything going on other
> > than the usual behind-the-scenes XP stuff. CPU
> > usage stays right around 0% or 6%, with an
> > occasional 6% and a very occasional 15%.
> > Interestingly, sleep(0.001) makes as big a
> > difference as your sleep(0.1), but sleep(0.0001) bumps it up to a steady
> > 100%!
>
>The underlying function in Windows is Sleep (or SleepEx) which takes an
>argument in milliseconds. 0.0001s = 0.1ms and it's rounded to 0. Sleep(0)
>has very specific semantics - for a single threaded program, it does
>nothing, so your code is effectively a busy loop taking 100% CPU.

Ah, useful information. Thank you. Where'd you learn that?

Dick Moores




From vasudevram at gmail.com  Mon Oct 15 11:54:36 2007
From: vasudevram at gmail.com (vasudevram)
Date: Mon, 15 Oct 2007 15:54:36 -0000
Subject: View XMLRPC Requests/Responses?
In-Reply-To: <1192463390.951199.87670@z24g2000prh.googlegroups.com>
References: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
	<5nhe7fFi4prbU1@mid.uni-berlin.de>
	<1192463390.951199.87670@z24g2000prh.googlegroups.com>
Message-ID: <1192463676.093742.115050@v29g2000prd.googlegroups.com>

On Oct 15, 8:49 pm, vasudevram <vasudev... at gmail.com> wrote:
> On Oct 15, 8:10 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>
> > xkenneth wrote:
> > > Hi,
>
> > >     I'm working on developing an XML-RPC interface from LabVIEW to
> > > python and I would really like to see how python is forming it's XML-
> > > RPC requests/responses. Is there any way I can force these to a log or
> > > print them to the screen? Thanks.
>
> > I've utilized the apache axis tcpmon for that, as proxy. See
>
> >http://docs.pushtotest.com/axisdocs/user-guide.html#tcpmon
>
> > Diez
>
> I haven't used apache axis tcpmon - so don't know how easy or
> difficult it is to use that approach - but if its non-trivial or
> awkward, there's another easy way - since the xmlrpc lib source is
> available - and it is, its part of the Python Standard library - just
> root around in the source and modify it to log to a file or to the
> screen. Will be pretty straightforward to do it. Its a hack, though, I
> know - because your changes would need to be carried around everywhere
> you want to use them (but then so does your code), and also because
> they would get clobbered when you upgraded to the next Python
> release.
>
> So a better way might be to inherit from an appropriate class of
> xmlrpclib client or server, use that class in your code instead, and
> modify the inherited class to log as needed, by getting hold of some
> output stream of the parent class - if it is exposed.
>
> <a href="http://www.dancingbison.com">Vasudev Ram</a>

I sort of had a need for this myself recently when writing some Python
XML-RPC code, but didn't do it because I could manage to debug my code
without it - but I remember noticing that my XML-RPC server was
logging the requests to stdout, by default (without any code by me to
do it). So I think the approach I mention above should work - just
look around in the server source code for where it does that, and
modify it as per need.

- Vasudev



From mensanator at aol.com  Thu Oct 25 14:44:53 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Thu, 25 Oct 2007 11:44:53 -0700
Subject: An efficient, pythonic way to calculate result sets
In-Reply-To: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
References: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
Message-ID: <1193337893.635877.208050@v3g2000hsg.googlegroups.com>

On Oct 25, 10:31 am, happyhon... at gmail.com wrote:
> Hello everyone,
>
> I've got a little issue, both programming and performance-wise. I have
> a set, containing objects that refer to other sets. For example, in a
> simple notation: (<a, b, c>, <d, e>) (or in a more object-like
> display: set(obj1.choices=set(a, b, c) ). There may be obj1..objN
> objects in the outer set, and the amount of items in the choices sets
> could also reach a high number. The objects in the choices sets might
> overlap.
>
> Now I want to have all possible combinations, like this: (a, d), (b,
> d), (c, d), (a, e), (b, e), (c, e).
>
> However, I've got a few catches that make an already (icky) recursive
> function worse to use.
>
> First of all, I want to be able to only choose things so that the
> outer 'result sets' have the same length. For example, if you'd have
> (<a, b>, <a, c>), you might pick (a, a) with a simple algorythm, the
> basic behaviour of sets reducing it to (a) and thus having an improper
> length. I could add yet another loop after calculating everything to
> throw out any result sets with the improper length, but that would be
> highly inefficient.

Does this do what you want?

result_set = set([])
seta = set(['a','b','c','d','e'])
setb = set(['a','c','f','g','h'])
for i in seta:
  temp1 = setb.difference(set([i]))
  for j in temp1:
    result_set.add(tuple(set([i,j])))
for i in result_set:
  print i

I figure there should be 4+5+3+5+5 results.
No ('a'), no ('c'). Has ('a','c') but not ('c','a').

##  ('c', 'g')
##  ('a', 'd')
##  ('h', 'e')
##  ('a', 'b')
##  ('c', 'f')
##  ('e', 'g')
##  ('c', 'b')
##  ('d', 'f')
##  ('a', 'g')
##  ('a', 'h')
##  ('c', 'e')
##  ('e', 'f')
##  ('d', 'g')
##  ('h', 'b')
##  ('a', 'f')
##  ('b', 'f')
##  ('c', 'd')
##  ('h', 'c')
##  ('a', 'c')
##  ('b', 'g')
##  ('a', 'e')
##  ('h', 'd')

>
> Second, I'd hope to be able to say that objX should be assumed to have
> made the choice z. In the first example I mentioned, if I said that
> 'obj1 == a', the only result sets that would come out would be (a, d)
> and (a, e).

Like this?

result_set = set([])
seta = set(['a','b','c','d','e'])
setb = set(['a','c','f','g','h'])
target = 'a'
for i in seta:
  temp1 = setb.difference(set([i]))
  for j in temp1:
    temp2 = set([i,j])
    if target in temp2:
      result_set.add(tuple(temp2))
for i in result_set:
  print i

##  ('a', 'f')
##  ('a', 'g')
##  ('a', 'd')
##  ('a', 'e')
##  ('a', 'h')
##  ('a', 'b')
##  ('a', 'c')


>
> I've been toying with this problem for a while, but I've found out it
> quickly gets slow, so I hope some people here could find a way to
> write code like this that is efficient (and hopefully not rely on
> recursion and 'fix up' loops like I've got mockups with right now).
>
> Thank you for any suggestions you can offer.




From duncan.booth at invalid.invalid  Mon Oct 29 10:10:32 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 Oct 2007 14:10:32 GMT
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
Message-ID: <Xns99D890339F424duncanbooth@127.0.0.1>

Armando Serrano Lombillo <arserlom at gmail.com> wrote:

> Why does Python give an error when I try to do this:
> 
>>>> len(object=[1,2])
> Traceback (most recent call last):
>   File "<pyshell#40>", line 1, in <module>
>     len(object=[1,2])
> TypeError: len() takes no keyword arguments
> 
> but not when I use a "normal" function:
> 
>>>> def my_len(object):
>      return len(object)
> 
>>>> my_len(object=[1,2])
> 2
> 
At the C level there are several options for how you define a function 
callable from Python. The most general form is 
METH_VARARGS|METH_KEYWORDS which accepts both a tuple of arguments and a 
dictionary of keyword arguments. These then have to be parsed to find 
the actual arguments.

Many of the builtin functions use only METH_VARARGS which means they 
don't support keyword arguments. "len" is even simpler and uses an 
option METH_O which means it gets a single object as an argument. This 
keeps the code very simple and may also make a slight difference to 
performance.

I don't know if the reason that most builtin functions don't accept 
keywords is just historical (someone would have to go through a lot of 
code and add keyword argument names) or if there really is any 
measurable performance difference to not using the METH_KEYWORDS option. 
Being able to write less C code may be the main factor.


From fredrik at pythonware.com  Sat Oct  6 09:57:36 2007
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 06 Oct 2007 15:57:36 +0200
Subject: slice with negative stride
In-Reply-To: <1191672336.230508.50600@o3g2000hsb.googlegroups.com>
References: <1191672336.230508.50600@o3g2000hsb.googlegroups.com>
Message-ID: <fe848f$uub$1@sea.gmane.org>

ajcppmod at gmail.com wrote:

>>> mystr = 'my string'
> 
> I would have then thought of the contents of mystr as:
> 
> indices    0 1 2 3 4 5 6 7 8
> content    m y   s t r i n g
> 
> with mystr[:3] = 'my '
> 
> Can someone explain to me how mystr[:3:-1] = 'gnirt'?

A slice [i:j:k] includes the first index (i) but *not* the last index 
(j).  Since you're stepping backwards, the slice will start at the end 
of the string (i=len(mystr)-1=8) and stop when it reaches j=3.

 >>> mystr[8]
'g'
 >>> mystr[7]
'n'
 >>> mystr[6]
'i'
 >>> mystr[5]
'r'
 >>> mystr[4]
't'

</F>



From mail at timgolden.me.uk  Tue Oct  2 03:20:47 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Tue, 02 Oct 2007 08:20:47 +0100
Subject: LastWriteTime in windows registry
In-Reply-To: <EF20B7056AB35C49BDF6A6D6D5FEF3D103F1AE@cvn65ucsex2.cvn65.navy.mil>
References: <EF20B7056AB35C49BDF6A6D6D5FEF3D103F1AE@cvn65ucsex2.cvn65.navy.mil>
Message-ID: <4701F14F.6020501@timgolden.me.uk>

Peters, Matthew J. ET3 wrote:
>             I'm looking for a way to read the lastwritetime property of
> a windows registry key.  ... I found the function in perl

So what does the Perl source say? It presumably hooks some kind
of Windows API. Take that and, if it isn't already exposed via
pywin32, use ctypes to get hold of it.

TJG


From nick.bastin at gmail.com  Tue Oct  9 22:32:59 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Tue, 9 Oct 2007 22:32:59 -0400
Subject: Mixing Python and C classes in a module
In-Reply-To: <4866bea60710090802s1ac3fde4vb3a4d17693448383@mail.gmail.com>
References: <87wstwibfl.fsf@keizer.soze.com>
	<4866bea60710090802s1ac3fde4vb3a4d17693448383@mail.gmail.com>
Message-ID: <66d0a6e10710091932i1b141c99s46f8f813887959ea@mail.gmail.com>

On 10/9/07, Chris Mellon <arkanes at gmail.com> wrote:
> On 09 Oct 2007 16:56:30 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
> >
> > Is it possible to mix classes defined in both Python and C in the same
> > module? Ideally I would like to be able to do:
> >
> >  from some.module import MyPythonClass, MyCClass
> >
> > I guess that would mean that this would look like this on disk:
> >
> >  some/
> >    __init__.py
> >    module.py      (contains MyPythonClass)
> >    module.so      (contains MyCClass)
> >
> > But would this work?
> >
>
> No, you'll need to make module a package, and import from (differently
> named) implementation packages.

Nah, you can do it, just not in this way.  You can either futz with
ihooks, or name module.py something like _module.py, import it into C,
and then re-export as 'module', after attaching all your C types.

--
Nick


From lew at lewscanon.com  Wed Oct  3 17:14:53 2007
From: lew at lewscanon.com (Lew)
Date: Wed, 03 Oct 2007 17:14:53 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d@insightbb.com>
References: <13frd6vtarbee75@corp.supernews.com>
	<85sl4sqckf.fsf@lola.goethe.zz> <fe0npc$cvq$1@orkan.itea.ntnu.no>
	<85hcl8qaj7.fsf@lola.goethe.zz> <fe0q7a$e42$1@orkan.itea.ntnu.no>
	<Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d@insightbb.com>
Message-ID: <OaSdnekikd7Tm5nanZ2dnUVZ_vumnZ2d@comcast.com>

rjack wrote:
> Webster? WEBSTER. . . ?
> 
> Whatever happened to the Oxford English Dictionary ?
> Seems to me the English have always spoken the definitive
> English. . . that's why they call it ENGLISH.

What is in a name?  A rose by any other name would still smell as sweet.

-- 
Lew


From happyhondje at gmail.com  Thu Oct 25 11:31:03 2007
From: happyhondje at gmail.com (happyhondje at gmail.com)
Date: Thu, 25 Oct 2007 15:31:03 -0000
Subject: An efficient, pythonic way to calculate result sets
Message-ID: <1193326263.917893.266620@e9g2000prf.googlegroups.com>

Hello everyone,

I've got a little issue, both programming and performance-wise. I have
a set, containing objects that refer to other sets. For example, in a
simple notation: (<a, b, c>, <d, e>) (or in a more object-like
display: set(obj1.choices=set(a, b, c) ). There may be obj1..objN
objects in the outer set, and the amount of items in the choices sets
could also reach a high number. The objects in the choices sets might
overlap.

Now I want to have all possible combinations, like this: (a, d), (b,
d), (c, d), (a, e), (b, e), (c, e).

However, I've got a few catches that make an already (icky) recursive
function worse to use.

First of all, I want to be able to only choose things so that the
outer 'result sets' have the same length. For example, if you'd have
(<a, b>, <a, c>), you might pick (a, a) with a simple algorythm, the
basic behaviour of sets reducing it to (a) and thus having an improper
length. I could add yet another loop after calculating everything to
throw out any result sets with the improper length, but that would be
highly inefficient.

Second, I'd hope to be able to say that objX should be assumed to have
made the choice z. In the first example I mentioned, if I said that
'obj1 == a', the only result sets that would come out would be (a, d)
and (a, e).

I've been toying with this problem for a while, but I've found out it
quickly gets slow, so I hope some people here could find a way to
write code like this that is efficient (and hopefully not rely on
recursion and 'fix up' loops like I've got mockups with right now).

Thank you for any suggestions you can offer.



From Kevin.Smith at sixquickrun.com  Thu Oct 25 23:53:33 2007
From: Kevin.Smith at sixquickrun.com (Kevin D. Smith)
Date: Thu, 25 Oct 2007 22:53:33 -0500
Subject: How to create a PUG mailing list?
Message-ID: <ffroc1$98t$1@foggy.unx.sas.com>

I'm trying to get a Python User Group started in Norman, OK and I want 
to get one of those fancy mailing lists on mail.python.org.  There is a 
link there to create a new list if you have the proper authority.  How 
does someone get the proper authority?

-- 
Kevin D. Smith



From sbassi at clubdelarazon.org  Thu Oct 18 13:05:34 2007
From: sbassi at clubdelarazon.org (Sebastian Bassi)
Date: Thu, 18 Oct 2007 14:05:34 -0300
Subject: Convert string to command..
In-Reply-To: <1192718860.391481.139090@v29g2000prd.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<1192718860.391481.139090@v29g2000prd.googlegroups.com>
Message-ID: <9e2f512b0710181005u1007e16ar26fbc64b6c7138a@mail.gmail.com>

On 10/18/07, Adam Atlas <adam at atlas.st> wrote:
>
> Use the builtin function "eval".

What is the difference with os.system()?

-- 
Sebasti?n Bassi (???????). Diplomado en Ciencia y Tecnolog?a.
Curso Biologia molecular para programadores: http://tinyurl.com/2vv8w6
GPG Fingerprint: 9470 0980 620D ABFC BE63 A4A4 A3DE C97D 8422 D43D

From duncan.booth at invalid.invalid  Wed Oct 24 09:46:50 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 24 Oct 2007 13:46:50 GMT
Subject: Better writing in python
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193232109.743432.97240@i13g2000prf.googlegroups.com>
Message-ID: <Xns99D396598BF42duncanbooth@127.0.0.1>

Alexandre Badez <alexandre.badez at gmail.com> wrote:

> Thanks for your try Cliff, I was very confused :P
> More over I made some mistake when I post (to make it easiest).
> 
> Here is my real code:
> 
> with
> dArguments = {
>   'argName' : {
>     'mandatory' : bool, # True or False
>     [...], # other field we do not care here
>   }
> }
> 
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if cls.dArguments[arg]['mandatory']:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
> 
> So, as you see, we agree each other about "if bool" or "if bool is
> True" ;)
> 
> So, my question was how to give it a better 'python like' look ?
> Any idea ?
> 
> 

For a 'python like' look lose the Hungarian notation (even Microsoft 
have largely stopped using it), increase the indentation to 4 spaces, 
and also get rid of the spurious parentheses around the result. 
Otherwise it is fine: clear and to the point.

If you really wanted you could write something like:

m, o = [], []
for arg in cls.dArguments:
    (m if cls.dArguments[arg]['mandatory'] else o).append(arg)
return m, o

Or even:
m, o = [], []
action = [o.append, m.append]
for arg in cls.dArguments:
    action[bool(cls.dArguments[arg]['mandatory'])](arg)
return m, o

but it just makes the code less clear, so why bother?


From ldo at geek-central.gen.new_zealand  Mon Oct  1 23:21:30 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 02 Oct 2007 16:21:30 +1300
Subject: Question about quoting style.
References: <mailman.1366.1191268378.2658.python-list@python.org>
Message-ID: <fdsdfq$dvc$2@lust.ihug.co.nz>

In message <mailman.1366.1191268378.2658.python-list at python.org>, Steven W.
Orr wrote:

> foo=bar                       # No quotes needed
> echo $foo             # Also none needed

Actually, it's not clear to me that quotes will never be needed on the
second line. Unless foo is always going to have the value "bar".


From theller at ctypes.org  Tue Oct 30 04:55:48 2007
From: theller at ctypes.org (Thomas Heller)
Date: Tue, 30 Oct 2007 09:55:48 +0100
Subject: Help ctypes on arm linux not compile
In-Reply-To: <F6C48E66-B5CF-4E56-9879-63BA32797D04@samuelsmith.org>
References: <F6C48E66-B5CF-4E56-9879-63BA32797D04@samuelsmith.org>
Message-ID: <fg6rik$8d3$1@ger.gmane.org>

Samuel M. Smith schrieb:
> I have built python 1.5.1 from source for an embedded ARM9 debian  
> linux Sarge distribution but
> ctypes doesn't build.  Anybody have any idea what the problem is? Do  
> I have to have the libffi package
> installed.
> See my errors below.

ctypes won't work with Python 1.5 because it uses new style classes, introduced in Python 2.2.
It uses other, newer features additionally, so it requires Python 2.3 at least.

Then, the included libffi package doesn't support ARM, you need a newer libffi
version.

I think that the current Python 2.5 sources, from SVN, should work.

Thomas



From kar1107 at gmail.com  Tue Oct 16 19:15:37 2007
From: kar1107 at gmail.com (Karthik Gurusamy)
Date: Tue, 16 Oct 2007 23:15:37 -0000
Subject: negative base raised to fractional exponent
In-Reply-To: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
Message-ID: <1192576537.866907.87400@i38g2000prf.googlegroups.com>

On Oct 16, 2:48 pm, schaefer... at gmail.com wrote:
> Does anyone know of an approximation to raising a negative base to a
> fractional exponent? For example, (-3)^-4.11111 since this cannot be
> computed without using imaginary numbers. Any help is appreciated.

Use complex numbers. They are part of python (no special modules
needed).
Just write your real number r, as r+0j

e.g. square-root of -4 is 2j

>>> (-4+0j)**(0.5)
(1.2246063538223773e-16+2j)         # real part is almost zero
>>>
>>> (-4.234324+0j)**(0.5)
(1.2599652164116278e-16+2.0577473119894969j)
>>> 2.0577473119894969j ** 2
(-4.234324+0j)
>>>


Karthik



From timr at probo.com  Thu Oct 25 02:28:05 2007
From: timr at probo.com (Tim Roberts)
Date: Thu, 25 Oct 2007 06:28:05 GMT
Subject: win32com.client documentation?
References: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
Message-ID: <end0i3peaak7e88s31vgn5jbok1j73er38@4ax.com>

Mark Morss <mfmorss at aep.com> wrote:
>
>I want to be able to script the creation of Excel spreadsheets and
>Word documents, interract with Access data bases, and so forth.

Empirically, the best way to do this (for me, at least) is to Google for
examples.  There are a few simple rules to learn on how to map the Visual
Basic and C++ COM examples you typically find into Python equivalents. Once
you've seen them once, it becomes pretty natural.

There are a few more esoteric topics (like indexed properties) that require
more exploration, and the pywin32 mailing list is absolutely invaluable for
those occasions.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From mathieu.malaterre at gmail.com  Fri Oct 19 03:42:43 2007
From: mathieu.malaterre at gmail.com (mathieu)
Date: Fri, 19 Oct 2007 07:42:43 -0000
Subject: strptime and microseconds
In-Reply-To: <1192740849.207061.251690@q3g2000prf.googlegroups.com>
References: <1192723239.854957.257280@v29g2000prd.googlegroups.com>
	<1192725397.632337.73420@k35g2000prh.googlegroups.com>
	<1192725976.909230.265280@q3g2000prf.googlegroups.com>
	<1192740849.207061.251690@q3g2000prf.googlegroups.com>
Message-ID: <1192779763.429703.237990@q3g2000prf.googlegroups.com>

On Oct 18, 10:54 pm, Gabriel Genellina <gagsl-... at yahoo.com.ar> wrote:
> On 18 oct, 13:46, mathieu <mathieu.malate... at gmail.com> wrote:
>
>
>
> > On Oct 18, 6:36 pm, mathieu <mathieu.malate... at gmail.com> wrote:
> > > >   I am trying to use strptime to parse my microseconds but I was not
> > > > able the documentation for it. The only list I found was:
> > Ok final version is simply:
>
> > s1 = "20070619"
> > s2 = "115344.51"
> > s3 = "115446.123456"
>
> > ms2 = eval(s2) % 1
> > mms2 = int(ms2 * 1000000 + 0.5)
> > ms3 = eval(s3) % 1
> > mms3 = int(ms3 * 1000000 + 0.5)
>
> > s = s1 + s2
> > d1 = datetime(*strptime(s[:14], "%Y%m%d%H%M%S")[0:6])
> > d1 = d1.replace(microsecond = mms2)
>
> What about this:
>
> py> import datetime
> py> s1 = "20070619 115344.025"
> py> p1, p2 = s1.split(".", 1)
> py> d1 = datetime.datetime.strptime(p1, "%Y%m%d %H%M%S")

python2.3:
from time import strptime

> py> ms = int(p2.ljust(6,'0')[:6])

ljust padds with space only in python 2.3. But thanks anyway your
solution is much cleaner !

-Mathieu



From zyzhu2000 at gmail.com  Tue Oct 23 16:38:29 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Tue, 23 Oct 2007 20:38:29 -0000
Subject: Life-time of temporary variables in list comprehensions
In-Reply-To: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
References: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
Message-ID: <1193171909.291405.263860@i13g2000prf.googlegroups.com>

On Oct 23, 12:02 pm, beginner <zyzhu2... at gmail.com> wrote:
> Hi All,
>
> If I have a list comprehension:
>
> ab=["A","B"]
> c = "ABC"
> [1.0 if c=='A' else c='B' for c in ab]
> print c
>
> >>"B"
>
> My test shows that if c is not defined before the list comprehension,
> it will be created in the list comprehension; if it is defined before
> the list comprehension, the value will be overwritten. In other words,
> temp variables are not local to list comprehensions.
>
> My question is why is this and is there any way to make c local to
> list comp?
>
> Thanks,
> Geoffrey

I see.

Thanks for everyone's help!



From gnuist006 at gmail.com  Tue Oct  9 15:24:23 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 19:24:23 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <m5ang3h11oorvsrkit4q1moi6mirofbdbr@4ax.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<m5ang3h11oorvsrkit4q1moi6mirofbdbr@4ax.com>
Message-ID: <1191957863.093505.293800@v3g2000hsg.googlegroups.com>

Special thanks to many of you for your very decent replies.

On Oct 9, 11:18 am, George Neuner <gneuner2/@/comcast.net> wrote:
> On Tue, 09 Oct 2007 05:15:49 -0000, gnuist... at gmail.com wrote:
> >Again I am depressed to encounter a fundamentally new concept that I
> >was all along unheard of. Its not even in paul graham's book where i
> >learnt part of Lisp. Its in Marc Feeley's video.
>
> >Can anyone explain:
>
> >(1) its origin
>
> Lambda calculus.  Continuation is just a formal term for "what the
> code does next".  It manifests, literally, as the next instruction(s)
> to be executed.
>
> >(2) its syntax and semantics in emacs lisp, common lisp, scheme
>
> Lisp does not have explicit continuations so there is no syntax for
> them.  Continuations in Lisp mainly take the form of function calls,
> function returns, exceptions, conditions, etc.  Sometimes code is
> written in "continuation passing style" (CPS) in which each function
> has one or more additional function parameters (the continuations) -
> the function terminates by passing its result as an argument to one of
> those continuation functions.
>
> Scheme has explicit continuations based on closures.  Closure
> continuations are created using CALL-WITH-CURRENT-CONTINUATION
> (usually abbreviated as CALL/CC).  Some Schemes also recognize a
> LET/CC form used mainly for escape continuations (exceptions).
> Scheme's closure continuations can be stored in data structures and
> used for complex control forms such as multitasking.  Like Lisp,
> Scheme code also is sometimes written using CPS.
>
> >(3) Is it present in python and java ?
>
> It is present in all languages.  It generally takes the form of
> procedure or function calls, returns, exceptions, etc.
>
> >(4) Its implementation in assembly. for example in the manner that
> >pointer fundamentally arises from indirect addressing and nothing new.
> >So how do you juggle PC to do it.
>
> As I stated above, every function call or return _is_ a continuation
> ... their implementation is obvious.
>
> For the closure form used in Scheme, the implementation is to create a
> closure, a data structure containing the function address and some
> method of accessing the function's free variables, and to call the
> function.  How you do this depends greatly on the instruction set.
>
> >(5) how does it compare to and superior to a function or subroutine
> >call. how does it differ.
>
> Calling closure continuations is a little more complicated and a bit
> slower than calling a normal function.  Creating the closure in the
> first place may be simple or complicated depending on the complexity
> of the source code and the processor's instruction set.
>
> >Thanks a lot.
>
> >(6) any good readable references that explain it lucidly ?
>
> Get yourself a good textbook on compilers.  Most of the techniques are
> applicable to all languages - even for seemingly very different
> languages, the differences in their compilers are simply in how the
> basic compilation techniques are combined.
>
> My favorite intermediate-level books are
>
> Aho, Sethi & Ullman. "Compilers: Principles, Techniques and Tools".
> 2nd Ed. 2006. ISBN 0-321-48681-1.
> The first edition from 1986, ISBN 0-201-10088-6, is also worth having
> if you can still find it.  The 1st edition is mainly about procedural
> languages, the 2nd gives more time to functional languages and modern
> runtime issues like GC and virtual machines.
>
> Cooper & Torczon, "Engineering a Compiler", 2004.
> ISBN 1-55860-698-X (hardcover), 1-55860-699-8 (paperback).
> Also available as a restricted 90-day ebook fromhttp://rapidshare.com/files/24382311/155860698X.Morgan_20Kaufmann.Eng...
>
> There are also some decent intro books available online.  They don't
> go into excruciating detail but they do cover the basics of code
> shaping which is what you are interested in.
>
> Torben Mogensen. "Basics of Compiler Design"http://www.diku.dk/~torbenm/Basics/
>
> "Engineering a Compiler".  I don't have this author's name, nor can
> Google find it at the moment.  I have a copy though (~2MB) - if you
> are interested, contact me by email and I'll send it to you.
>
> Also Google for free CS books.  Many older books (including some
> classics) that have gone out of print have been released
> electronically for free download.
>
> George
> --
> for email reply remove "/" from address




From bozonm at vscht.cz  Sun Oct  7 13:17:32 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Sun, 07 Oct 2007 19:17:32 +0200
Subject: Pil image module, "mode" bug..
References: <1191762186.617411.309700@g4g2000hsf.googlegroups.com>
	<pan.2007.10.07.13.47.31.978730@vscht.cz>
	<1191772929.299902.87760@g4g2000hsf.googlegroups.com>
Message-ID: <pan.2007.10.07.17.17.32.846495@vscht.cz>

On Sun, 07 Oct 2007 09:02:09 -0700, Abandoned wrote:

> On Oct 7, 4:47 pm, Michal Bozon <boz... at vscht.cz> wrote:
>> On Sun, 07 Oct 2007 06:03:06 -0700, Abandoned wrote:
>> > Hi..
>> > I find the picture color with:
>> > im=Image.open("/%s" %name)
>> > color=im.mode   #p=black & beyaz rgb=color L=grey
>>
>> > This usually work true but in these pictures:
>> >http://malatya.meb.gov.tr/images/alt/ilsis_logo.gif
>> >http://malatya.meb.gov.tr/images/meb.gif
>>
>> > Say me P (black&white) but these pictures are color..
>>
>> > What is the reason of this ?
>>
>> > I'm sorry my bad english
>>
>> P does mean palette, black&white is a special case of palette, with two
>> colors.
> 
> How can i understand the picture color ? (black &white or color or
> grey)

If you know how to work with RGB images, you can convert the image
from the palette mode easily:

img2 = img.convert(mode='RGB')

Anyway, always is helpful to read the tutorial or basic documentation.. ;)

 MB


From martin at v.loewis.de  Wed Oct 31 10:16:45 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 31 Oct 2007 15:16:45 +0100
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <1193813238.978699.154830@57g2000hsv.googlegroups.com>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
	<1193813238.978699.154830@57g2000hsv.googlegroups.com>
Message-ID: <47288E4D.6010301@v.loewis.de>

> however make still complains of the non existance of the the Tcl/Tk
> libs and/or headers

So where it tk.h located?

Regards,
Martin


From sndive at gmail.com  Tue Oct 30 20:04:45 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Wed, 31 Oct 2007 00:04:45 -0000
Subject: simple? embedding question
In-Reply-To: <4727854D.3050201@spam.com>
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
	<4727854D.3050201@spam.com>
Message-ID: <1193789085.081049.152410@22g2000hsm.googlegroups.com>

On Oct 30, 1:26 pm, Farshid Lashkari <n... at spam.com> wrote:
> snd... at gmail.com wrote:
> > suppose i have imported two modules foo and bar with
> > foo=PyImport_ImportModule("foo") and bar=PyImport_ImportModule("bar")
> > respectively.
>
> > Now suppose I have an artitrary python expression to evaluate.
> > Do I need to parse that thring and check for foo. and bar. before
> > jumping the usual
> > PyModule_GetDict,PyDict_GetItemString,PyObject_CallObject hoop hoop on
> > the PyObject for
> > the prefix or there is a better way?
>
> > btw PyRun_SimpleString("foo.baz()"); does not work:
> >  Traceback (most recent call last):
> >   File "<string>", line 1, in ?
> > NameError: name 'foo' is not defined
>
> > and i potentially need a PyObject* back with the result of the
> > expression anyway.
>
> I believe the problem is that you are not importing the "foo" and "bar"
> modules into the __main__ scope. Try using PyImport_ImportModuleEx,
> which will allow you to specify the global scope to import the module
> into. For example, to import the modules into the __main__ scope you
> could do the following:
>
> PyObject* mainmod = PyImport_AddModule("__main__");
> PyObject* maindict = PyModule_GetDict(mainmod);
>
> foo = PyImport_ImportModuleEx("foo", maindict , maindict , NULL);
> bar = PyImport_ImportModuleEx("bar", maindict , maindict , NULL);
>
> Once the modules are imported into the __main__ scope, you should be
> able to use PyRun_SimpleString() to evaluate expressions.
>
> -Farshid

i switched to PyImport_ImportModuleEx per your suggestion but i still
get

Traceback (most recent call last):
  File "<string>", line 1, in ?
NameError: name '__main__' is not defined

i tried PyRun_SimpleString("__main__.foo.baz()"); :
Traceback (most recent call last):
  File "<string>", line 1, in ?
NameError: name '__main__' is not defined

i do not have if __name__ == '__main__':
statement anywhere in the module i'm importing,
but nevertheless i checked that PyImport_AddModule("__main__");
and subsequent getdict return non null pointers.
does non null dictionary indicate that PyImport_AddModule
succeeded as opposed to creating an empty module object?




From iansan at gmail.com  Wed Oct 17 12:58:53 2007
From: iansan at gmail.com (IamIan)
Date: Wed, 17 Oct 2007 16:58:53 -0000
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192529804.759199.76350@i13g2000prf.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
Message-ID: <1192640333.986171.67720@v29g2000prd.googlegroups.com>

Thank you for the replies. After a lot of research I tracked down the
issue. I was using the CGI to build all of the pages for the site,
then filling in content with .innerHTML= as users clicked on tabs.
Since I wanted to place the Google Ads in different parts of each
page, the Google Ads JavaScript was in each page chunk being
dynamically placed with .innerHTML.

It turns out that JavaScript isn't executed when it is placed in a
page via .innerHTML. I tried some tricks to execute it after it was
added to the page (eval, appendChild) but it still didn't work. The
Google Ads JavaScript is very touchy and their agreement is very
strict; it wasn't even clear that what I was doing was in line with
it, so I broke the site up into multiple CGI pages and now it works
fine.

One CGI question - since all of my CGIs are spitting out HTML is their
source code safe? wget and linking to the source deliver the output
HTML. Are there any other methods of trying to steal the source CGI I
need to protect against?

Thank you.



From chris.monsanto at gmail.com  Fri Oct  5 11:42:57 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Fri, 05 Oct 2007 15:42:57 -0000
Subject: novice list
In-Reply-To: <87ir5lfxph.fsf@rudin.co.uk>
References: <mailman.1572.1191582075.2658.python-list@python.org>
	<87ir5lfxph.fsf@rudin.co.uk>
Message-ID: <1191598977.515953.288720@50g2000hsm.googlegroups.com>

On Oct 5, 10:22 am, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
> Istv?n <uhum2... at freemail.hu> writes:
> > Could somebody suggest me a novice Python list, please?
>
> Here you go:
>
> ['novice']
>
> (Sorry, couldn't resist.)

No no... I think he meant a "simple" list. Like, you know, a list
novices can handle.

I suggest the empty list []!



From akraemer at sbcglobal.net  Fri Oct 19 18:30:21 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Fri, 19 Oct 2007 22:30:21 -0000
Subject: Strange behaviour with reversed()
In-Reply-To: <Xns99CEDDEEEB731duncanbooth@127.0.0.1>
References: <13hdochic30oo43@corp.supernews.com>
	<mailman.161.1192686567.13605.python-list@python.org>
	<13he60e4vc6i753@corp.supernews.com>
	<Xns99CD690B6D6Dduncanbooth@127.0.0.1>
	<1192726016.847208.35040@v23g2000prn.googlegroups.com>
	<Xns99CEDDEEEB731duncanbooth@127.0.0.1>
Message-ID: <1192833021.006585.192250@t8g2000prg.googlegroups.com>

On Oct 19, 1:49 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Andreas Kraemer <akrae... at sbcglobal.net> wrote:
> >> The only other behaviours I would regard as intuitive for iteration over
> >> a mutating sequence would be to throw an exception either for mutating
> >> the sequence while the iterator exists or for using the iterator after a
> >> mutation.
>
> > Maybe it would have been slightly more intuitive if reversed() had
> > been implemented like this,
>
> > def Reversed(seq):
> >   for i in xrange(len(seq)-1,-1,-1):
> >     yield seq[i]
>
> > so that the length of the sequence is determined when the iteration
> > starts, not when the iterator is created?
>
> Perhaps, but either way it comes down to "don't modify the sequence while
> iterating".

Definitely agreed.



From stef.mientki at gmail.com  Tue Oct 16 16:43:26 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Tue, 16 Oct 2007 22:43:26 +0200
Subject: how to get my own namespace ?
Message-ID: <4715226E.2020904@gmail.com>

I want to view my own namespace,
i.e. to see the modules namespace in the module itself,
is that possible ?

I can use
   dir()
but I read dir is just a convenience function,
and besides I want key/value pairs.

thanks,
Stef Mientki


From siona at chiark.greenend.org.uk  Wed Oct 31 09:16:38 2007
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 31 Oct 2007 13:16:38 +0000 (GMT)
Subject: Creating a temporary file in Python
References: <1193832119.872710.108920@k79g2000hse.googlegroups.com>
Message-ID: <6ux*naIYr@news.chiark.greenend.org.uk>

looping  <kadeko at gmail.com> wrote:
>I want to create a temporary file, read it in an external command and
>finally delete it (in Windows XP).
>
>I try to use tempfile module but it doesn't work, the file couldn't be
>open by my other process (error like: SP2-0310: unable to open file "c:
>\docume~1\looping\locals~1\temp\tmpau81-s.sql")

You're using NamedTemporaryFile. The tempfile documentation
(http://docs.python.org/lib/module-tempfile.html) says:

" [ ... ] Whether the name can be used to open the file a second time,
while the named temporary file is still open, varies across platforms
(it can be so used on Unix; it cannot on Windows NT or later)."

You probably want to use tempfile.mkstemp and explicitly close
(before running the external command) and delete it.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
   "Frankly I have no feelings towards penguins one way or the other"
        -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From chowroc.z+l at gmail.com  Thu Oct 18 03:51:03 2007
From: chowroc.z+l at gmail.com (Roc Zhou)
Date: Thu, 18 Oct 2007 15:51:03 +0800
Subject: A near realtime file system mirror application written in Python
In-Reply-To: <7847e5160710161952t7a22881ei1ba0d70b69dec883@mail.gmail.com>
References: <7847e5160710161952t7a22881ei1ba0d70b69dec883@mail.gmail.com>
Message-ID: <7847e5160710180051je64f2b6j9af3c9bbe6c7d50@mail.gmail.com>

mirrord/fs_mirror makes use of inotify, which is a functionality afforded
by the recent Linux (from 2.6.12). It is a counterpart of FAM, since Linux
FAM has stopped so long.

On 10/17/07, Roc Zhou <chowroc.z+l at gmail.com> wrote:
>
> Hello:
>
> Recently I started an open source project "cutils" on the
> sourceforge:
> https://sourceforge.net/projects/crablfs/
>
> The document can be found at:
> http://crablfs.sourceforge.net/#ru_data_man
>
> This project's mirrord/fs_mirror is a near realtime file system
> mirroring application across 2 or more hosts, now it can work
> for me.
>
> I hope this tool can be useful to you.
>
> Thank you.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071018/c7309465/attachment.html>

From thomas.weholt at gmail.com  Wed Oct 10 04:39:55 2007
From: thomas.weholt at gmail.com (Thomas W)
Date: Wed, 10 Oct 2007 01:39:55 -0700
Subject: pyxml package not working? No xml.dom.ext.reader module available
	after install.
Message-ID: <1192005595.981054.150530@22g2000hsm.googlegroups.com>

I've tried to install the pyxml-package, available at http://pyxml.sourceforge.net/,
both from source and using some hack on the win32-binary package
available for python2.4, but without luck. After install the module
xml.dom.ext.reader is not available, eventhough the folder, __init__py
and everything is in place.

Why? And could someone please make a win32-binary package of pyxml for
python2.5? Thanks!



From gandalf at shopzeus.com  Wed Oct  3 09:37:15 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Wed, 03 Oct 2007 15:37:15 +0200
Subject: gdbm objects not iterable?
Message-ID: <47039B0B.7080301@shopzeus.com>


  Hi All,

gdbm objects have a "firstkey" and a "nextkey" method. So if I want 
iterate through the keys (which I often do) then I have to do this:

def itergdbmkeys(gdbm_obj):
    key = gdbm_obj.firstkey()
    if key is None:
        raise StopIteration
    yield key
    while True:
        key = gdbm_obj.nextkey(key)
        if key is None:
            raise StopIteration
        yield key

Then I can do this:

for key in itergdbmkeys(gdbm_obj):
    process(key,gdbm_obj)

I wonder why we do not have a "next()" method, which could return an 
iterator instantly. I don't think that it would be harmful, but 
definitely it would be useful. Then we could do this:

for key in gdbm_obj:
    process(key,obj)

I know that this is a very small change, but it can make gdbm objects 
look more like dictionaries.

Please make comments. :-)

   Laszlo



From hancock.robert at gmail.com  Thu Oct 18 18:21:15 2007
From: hancock.robert at gmail.com (milan_sanremo)
Date: Thu, 18 Oct 2007 22:21:15 -0000
Subject: What Data is Available With a Pickled Object Over a Socket?
Message-ID: <1192746075.952684.152760@z24g2000prh.googlegroups.com>

I've read the library entry for pickle a couple of times, and I'm
still not
sure what data is maintained when an item is pickled and sent over a
socket.

Two importable modules:

class envelope():
	def __init__(self, rec, d):
		self.recipient = rec
		self.listData = d

class mailbag():
	def __init__(self):
		self.dicEnvelope = []

	def addEnvelope(self, uuid, envelope):
		self.dicEnvelope[uuid] = envelope


Client
---------
import envelope, mailbag, cPickle, socket

remoteHost = "999.666.888.777
mb = mailbag()
env1 = envelope('John', ('a', 'b', 'c'))
env2 = envelope('Mary', ('d', 'e', f'))

mb.addEnvelope(1, env1)
mb.addEvenlop(2, env2)

pickledMailbag = cPickle.dump(mb, HIGHEST_PROTOCOL)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(remoteHost)
sock.send(pickledMailbag)

Server
---------
import envelope, mailbag, cPickle, socket

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(host, port)
sock.listen(5)
conn, addr = sock.accept()
while 1:
    pickledData = conn.recv(1024)
    if not pickledData break

mb = cPickle.load(pickledData)

At this point, does mb contain a dictionary with the two envelopes
with
their data?



From mdipierro at cti.depaul.edu  Fri Oct 12 23:55:17 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Fri, 12 Oct 2007 22:55:17 -0500
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <fepf58$439$1@sea.gmane.org>
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
	<fepf58$439$1@sea.gmane.org>
Message-ID: <2CEA8691-12EC-4E63-B13E-B923E6CDD54F@cti.depaul.edu>

happy to hear that.
you may want take a loot at http://mdp.cti.depaul.edu/vqcd
It is mostly python stuff and will post the code soon.

Massimo

On Oct 12, 2007, at 10:47 PM, Fernando Perez wrote:

> Massimo Di Pierro wrote:
>
>> P.S. Michele Simionato. I have heard your name before? Is it possible
>> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
>> and there is not many of us.
>
> More than you think, it seems.  Some of us were even using python  
> to process
> Lattice QCD computations years ago ;-)
>
> Cheers,
>
> f
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From iansan at gmail.com  Wed Oct 17 17:05:43 2007
From: iansan at gmail.com (IamIan)
Date: 17 Oct 2007 14:05:43 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192529804.759199.76350@i13g2000prf.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
Message-ID: <1192639690.306271.298190@z24g2000prh.googlegroups.com>

Thank you for the replies. After a lot of research I tracked down the
issue. I was using the CGI to build all of the pages for the site,
then filling in content with .innerHTML= as users clicked on tabs.
Since I wanted to place the Google Ads in different parts of each
page, the Google Ads JavaScript was in each page chunk being
dynamically placed with .innerHTML.

It turns out that JavaScript isn't executed when it is placed in a
page via .innerHTML. I tried some tricks to execute it after it was
added to the page (eval, appendChild) but it still didn't work. The
Google Ads JavaScript is very touchy and their agreement is very
strict; it wasn't even clear that what I was doing was in line with
it, so I broke the site up into multiple CGI pages and now it works
fine.

One CGI question - since all of my CGIs are spitting out HTML is their
source code safe? wget and linking to the source deliver the output
HTML. Are there any other methods of trying to steal the source CGI I
need to protect against?

Thank you.



From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 23:06:27 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 05:06:27 +0200
Subject: Boolean parser..
In-Reply-To: <1191598074.893657.233250@57g2000hsv.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
	<1191583772.041261.71790@19g2000hsx.googlegroups.com>
	<1191585605.393165.72100@k79g2000hse.googlegroups.com>
	<1191598074.893657.233250@57g2000hsv.googlegroups.com>
Message-ID: <4706ab00$0$8918$426a34cc@news.free.fr>

Paul McGuire a ?crit :
(snip)

<nitpicking>
May I suggest a couple cleanifications for our newbie friends around ?

> from searchparser import SearchQueryParser
> 
> products = [ "grape juice", "grape jelly", "orange juice", "orange
> jujubees",
>     "strawberry jam", "prune juice", "prune butter", "orange
> marmalade",
>     "grapefruit juice" ]

# round 1 : extracting constants from iterations

> class FruitSearchParser(SearchQueryParser):
>     def GetWord(self, word):
>         return set( p for p in products if p.startswith(word + " ") )

      def GetWord(self, word):
          target = word + " "
          return set(p for p in products if p.startswith(target) )


>     def GetWordWildcard(self, word):
>         return set( p for p in products if p.startswith(word[:-1]) )

       def GetWordWildcard(self, word):
           target = word[:-1]
           return set( p for p in products if p.startswith(target) )


# round 2 : factoring out common code

class FruitSearchParser(SearchQueryParser):
     def _find_products_starting_with(self, target):
         return set(p for p in products if p.startswith(target))

      def GetWord(self, word):
          return self._find_products_starting_with(word + " ")

       def GetWordWildcard(self, word):
          return self._find_products_starting_with(word[:-1])

# round 3: doing proper encapsulation:

class FruitSearchParser(SearchQueryParser):
     def __init__(self, products):
         self._products = products

     def _find_products_starting_with(self, target):
         return set(p for p in self._products if p.startswith(target))

      def GetWord(self, word):
          return self._find_products_starting_with(word + " ")

       def GetWordWildcard(self, word):
          return self._find_products_starting_with(word[:-1])


# round 4 : respecting pep08 (naming conventions):
# heck ! I guess that this would need a rewrite of SearchQueryParser

</nitpicking>


From stef.mientki at gmail.com  Tue Oct 16 17:39:44 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Tue, 16 Oct 2007 23:39:44 +0200
Subject: how to get my own namespace ?
In-Reply-To: <ff389o$bfp$2@ger.gmane.org>
References: <4715226E.2020904@gmail.com> <ff389o$bfp$2@ger.gmane.org>
Message-ID: <47152FA0.5070703@gmail.com>

Robert Kern wrote:
> stef mientki wrote:
>   
>> I want to view my own namespace,
>> i.e. to see the modules namespace in the module itself,
>> is that possible ?
>>
>> I can use
>>    dir()
>> but I read dir is just a convenience function,
>> and besides I want key/value pairs.
>>     
>
> vars() will give you a dictionary copy of the local namespace, but modifying it
> won't modify the namespace.
>
> globals() will give you the module's namespace as a dictionary which you can modify.
>
> locals() will give you the local namespace (wherever you happen to be), but you
> may be restricted from modifying that dictionary in some circumstances.
>
>   
thanks Robert,

funny,
that this is much more complicated than __dict__ of an external module:
- you have to make a copy before iterating
- iterating more than once increases the list
I think I just write a module on top.

cheers,
Stef Mientki




From none at try.invalid  Thu Oct 25 11:56:11 2007
From: none at try.invalid (Pete Bartonly)
Date: Thu, 25 Oct 2007 16:56:11 +0100
Subject: local variable referenced before assignment
In-Reply-To: <slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
	<slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
Message-ID: <4720bc9b$0$511$5a6aecb4@news.aaisp.net.uk>

A.T.Hofkamp wrote:
> On 2007-10-25, Pete Bartonly <none at try.invalid> wrote:
>> Quick question, probably quite a simple matter. Take the follow start of 
>> a method:
>>
>>
>> def review(filesNeedingReview):
>>
>>      for item in filesNeedingReview:
>>          (tightestOwner, logMsg) = item
>>
>>          if (logMsg != None):
>>              for logInfo in logMsg.changed_paths:
>>
>>
>> This generates the error:
>>
>>    UnboundLocalError: local variable 'logMsg' referenced before assignment
> 
> This should work, are you sure you didn't make a typo in one of the names?

Nope, the above is verbatim. This is why I'm so confused. It should 
work! I'm editing in emacs, and the indents are tab chars. I've 
re-indented the indents using 'tab' key - same result.

The entire error output is this:

Traceback (most recent call last):
   File "checkCode.py", line 602, in ?
     analyseFiles(tempDir)
   File "checkCode.py", line 448, in analyseFiles
     analyseFilesInARepos(startDir, f)
   File "checkCode.py", line 590, in analyseFilesInARepos
     makeReport(projName, filesNeedingReview, filesFailedReview)
   File "checkCode.py", line 422, in makeReport
     for logInfo in logMsg.changed_paths:
UnboundLocalError: local variable 'logMsg' referenced before assignment

I'm rather stuck at what to try next!

thanks.
Pete







> 
> Another way to make this fail would be when the if-condition is outside
> the loop (is the indentation correct in your code?).
> 
> A short demontration:
>>>> def r(fnr):
> ...   for item in fnr:
> ...     w,m = item
> ...     if m == 2:
> ...       print w
> ...
>>>> fnr = [(1,2), (3,4)]
>>>> r(fnr)
> 1
> 
> With respect to compactness and style, you can move your multi-assignment
> statement in the for loop, as in
> 
> for tightestOwner, logMsg in filesNeedingReview:
> 
> Also, brackets around conditions (in the if) are not needed, and comparing
> against None is usually done with 'is' or 'is not' instead of '==' or '!='.
> The result is then
> 
> if logMsg is not None:
> 
> 
>> I thought I'd assigned it in the "(tightestOwner, logMsg) = item" line - 
>> so in the python interpreter complaining about the fact this assignment 
>> might not go well?
> 
> No, you'd get an error at that point in that case.
> 
> 
> Sincerely,
> Albert


From torerik81 at gmail.com  Mon Oct  8 15:19:50 2007
From: torerik81 at gmail.com (=?ISO-8859-1?Q?Tor_Erik_S=F8nvisen?=)
Date: Mon, 8 Oct 2007 21:19:50 +0200
Subject: Convert obejct string repr to actual object
Message-ID: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>

Hi,

I've tried locating some code that can recreate an object from it's
string representation...
The object in question is really a dictionary containing other
dictionaries, lists, unicode strings, floats, ints, None, and
booleans.

I don't want to use eval, since I can't trust the source sending the
object.... I'm sure someone must have had the same need and created
code for it... Maybe Pypy has what I need??? Haven't looked though...

Regards,
Tor Erik

PS: The string repr is created by a server outside of my control...


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 10 17:00:08 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 10 Oct 2007 23:00:08 +0200
Subject: I'm starting to think like a Pythonista
References: <fejah0$lkk$1@solaris.cc.vt.edu>
Message-ID: <5n4sqoFg4bs3U1@mid.individual.net>

brad wrote:
> low_odds = [1,3,5,7,9]
> # make a list containing 10 - 98 evens only
> big_evens =  big_evens = [x for x in list(xrange(99)) if x % 2 ==
> 0 and x >8]

Why use xrange if you convert it to a full list in place? No
advantage there.

Regards,


Bj?rn
-- 
BOFH excuse #300:

Digital Manipulator exceeding velocity parameters



From carsten at uniqsys.com  Fri Oct 12 13:14:11 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 12 Oct 2007 13:14:11 -0400
Subject: Convert obejct string repr to actual object
In-Reply-To: <EE7D40281B517A41AF5A90847A61F279379655CE@SEW39051.oak.fg.rbc.com>
References: <EE7D40281B517A41AF5A90847A61F279379655CE@SEW39051.oak.fg.rbc.com>
Message-ID: <1192209251.3406.38.camel@dot.uniqsys.com>

On Fri, 2007-10-12 at 17:41 +0100, English, Mark wrote:
> > From: Tor Erik S?nvisen
> > Date: October 8th 2007
> > I've tried locating some code that can recreate an object from
> > it's string representation... 
> On a related note I've wondered about this:
> >>> class Foo(object): pass
> >>> f = Foo()
> >>> s = repr(f)
> >>> s
> '<__main__.Foo object at 0x007CBAB0>'
> 
> So how do I get f back from s ?
> Obviously this is open to abuse. I just wondered if a mechanism existed short of writing
> a C-extension which parses that string, casts the hex number to a PyObject *, INCREFs it,
> and gives it back...

I can't help but wonder, do you often find yourself having to locate an
object from its hexadecimal address?

-- 
Carsten Haese
http://informixdb.sourceforge.net




From gagsl-py2 at yahoo.com.ar  Tue Oct 30 03:54:51 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 04:54:51 -0300
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
	<47260805$0$5155$426a34cc@news.free.fr>
	<87d4uxk08l.fsf@mulj.homelinux.net> <fg6ghv$ff1$1@ger.gmane.org>
Message-ID: <op.t0z2xpmdx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 02:51:39 -0300, Donn Ingle <donn.ingle at gmail.com>  
escribi?:

>> While Java's variable declarations bear a superficial (syntactical)
>> similarity to C, their semantics is in fact equivalent to the
>> object-reference semantics we know in Python.
>
> I come from Z80A/GWBASIC/VB and a little C, I would describe a Python
> variable as a pointer - in that it contains the address of something.
> What that "something" is, is a little fuzzy. Right now I imagine it's to  
> a
> kind of structure which has meta info about the object as well as it's
> actual address.
>
> How far off would that be?

Almost true. A Python variable is a name inside a namespace, pointing to a  
Python object. Many names may point to the same object, of course.
An object (in CPython) is a structure containing a reference count,  
followed by a pointer to the object's type, followed by the object  
contents itself. The object contents may as simple as a single value (e.g.  
int or float objects) or rather complex (like the frame object which  
contains about 18 other values, including many pointers to other  
structures and arrays).
The object's type would be what you call the meta info, and contains the  
type name, many pointers to functions (implementing the type methods) and  
some flags describing the type behavior.

-- 
Gabriel Genellina



From mensanator at aol.com  Tue Oct  9 14:21:41 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 09 Oct 2007 11:21:41 -0700
Subject: pytz has so many timezones!
In-Reply-To: <5n1ebbFfok0sU1@mid.uni-berlin.de>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<5n1ebbFfok0sU1@mid.uni-berlin.de>
Message-ID: <1191954101.289278.216770@g4g2000hsf.googlegroups.com>

On Oct 9, 8:34 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> mensana... at aol.com wrote:
> > On Oct 8, 1:03 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> >> On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com wrote:
> >> > For example, Windows has seperate listings for
>
> >> > Central America
> >> > Central Time (US & Canada)
> >> > Guadalahara, Mexico City, Monterry - New
> >> > Guadalahara, Mexico City, Monterry - Old
> >> > Saskatchewan
>
> >> > but they are all GMT-6
>
> >> But they could have different rules for Daylight Saving Time.
>
> > Which only matters if you're setting your clock.
>
> That's BS. If I'm supposed to be attending a video-conference that spans a
> few continents which is scheduled using a web-app, it's VITAL that I get
> the invitation and reminder rendered in MY local timezone, DST included.
>
> And for the matter of
>
> """
> There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> +12.
> """
>
> who says that timezones have to be separated by one hour each?

The Earth says. It takes 24 hours to revolve.

> Why aren't they separated by 30minutes, or 20, or 10? Or 2 hours?

Why isn't an hour defined to be 30 minutes?

> Or why don't we have a global time?

Like UTC?

>
> Your 25 timezones are an abstraction the same way

Not the same way at all. The 25 timezones I speak of are
not merely an abstraction, but related to longitude.

> as are the 400 apparently in use by people all over the world

Where the correlation to longitude is much looser.
Granted, it doesn't need to be for non-navigational
purposes. And although governments can legislate things
like DST, they can't legislate longitude.

> - and last time I checked, there was no
> fundamental law in physics or such that limited the allowed or sensible
> number of timezones...

Isn't there some law somewhere that says the circumference
of a sphere is 360deg? Doesn't that same law mean that no two
points on a sphere can be seperated by more than 180deg
longitude? Doesn't that make GMT+13 non-sensible?

>
> Diez



From steven at REMOVE.THIS.cybersource.com.au  Fri Oct 19 04:58:36 2007
From: steven at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Fri, 19 Oct 2007 08:58:36 -0000
Subject: how to iterate over sequence and non-sequence ?
References: <mailman.201.1192778546.13605.python-list@python.org>
Message-ID: <pan.2007.10.19.08.58.35@REMOVE.THIS.cybersource.com.au>

On Fri, 19 Oct 2007 01:24:09 +0200, stef mientki wrote:

> hello,
> 
> I generate dynamically a sequence of values, but this "sequence" could
> also have length 1 or even length 0.
> 
> So I get some line in the form of:
>       line = '(2,3,4)'
>       line = ''
>       line = '(2)'
> (in fact these are not constant numbers, but all kind of integer
> variables, coming from all over the program, selected from a tree, that
> shows all "reachable" variables)
> 
> So in fact I get the value from an exec statement, like this
>       exec 'signals = ' + line

And then, one day, somebody who doesn't like you will add the following 
to your input data:

"0; import os; os.system('rm # -rf /')"

[ Kids: don't try this at home! Seriously, running that command will be 
bad for your computer's health. Or at least it would, if I hadn't put a 
spike in it. ]

Don't use exec in production code unless you know what you're doing. In 
fact, don't use exec in production code.


> Now I want to iterate over "signals", which works perfect if there are 2
> or more signals,
> but it fails when I have none or just 1 signal.
>     for value in signals :
>         do something


No, I would say it already failed before it even got there.

>>> line = ''
>>> exec 'signals = ' + line
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<string>", line 1
    signals =
            ^
SyntaxError: unexpected EOF while parsing



This is the right way to deal with your data:

input_data = """  (2, 3  , 4) 

  (2)
(3,4,5)
( 1, 2,3)
"""

for line in input_data.split('\n'):
    line = line.strip().strip('()')
    values = line.split(',')
    for value in values:
        value = value.strip()
        if value:
            print(value)


> As this meant for real-time signals, I want it fast, so (I think) I
> can't afford extensive testing.

Don't guess, test it and see if it is fast enough. Some speed ups:

If you're reading from a file, you can just say: "for line in file:" 
instead of slurping the whole lot into one enormous string, then 
splitting over newlines.

If you can guarantee that there is no extra whitespace in the file, you 
can change the line 

    line = line.strip().strip('()')

to the following:

    line = line.strip('\n()')

and save a smidgen of time per loop. Likewise, drop the "value = 
value.strip()" in the inner loop.


-- 
Steven.


From simon at brunningonline.net  Mon Oct 15 11:12:22 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Mon, 15 Oct 2007 16:12:22 +0100
Subject: Newbi Q: What is a rational for strings not being lists in Python?
In-Reply-To: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
Message-ID: <8c7f10c60710150812g30a2181cw7aa067343cd32e22@mail.gmail.com>

On 10/15/07, Dmitri O.Kondratiev <dokondr at gmail.com> wrote:
> To clarify my point:
> reverse()  is  a lucky one  - Python has variants of *this particular*
> function both for lists and strings. Yet what about other list functions?
> How in general, can I write a function that works  both on list and string
> types? Both are sequences, right? Why string is not a subtype of a list
> then?

Lists are mutable, strings are not, so so strings can't support all a
list's methods.

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 22 08:00:02 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 14:00:02 +0200
Subject: calling a function from string
In-Reply-To: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
Message-ID: <471c90ba$0$27724$426a34cc@news.free.fr>

james_027 a ?crit :
> hi,
> 
> i have a function that I could like to call, but to make it more
> dynamic I am constructing a string first that could equivalent to the
> name of the function I wish to call. how could I do that? the string
> could might include name of the module.
> 
> for example
> 
> a_string = 'datetime.' + 'today()'
> 
> how could I call a_string as function?

The obvious answer is to use eval or exec, but it's 99.99 times out of 
100 the wrong solution.

Better solutions usually rely on Python's introspection features - 
mostly globals(), locals(), sys.modules, and of course getattr().


From tim at timgolden.me.uk  Sun Oct  7 13:30:57 2007
From: tim at timgolden.me.uk (Tim Golden)
Date: Sun, 07 Oct 2007 18:30:57 +0100
Subject: How to create a file on users XP desktop
In-Reply-To: <47090D86.5080805@tim.thechases.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>	<1191735169.441525.106060@o80g2000hse.googlegroups.com>	<4708CAF4.7020206@bigfoot.com>
	<47090D86.5080805@tim.thechases.com>
Message-ID: <470917D1.10900@timgolden.me.uk>

Tim Chase wrote:
>> You are assuming the system is not localized, that won't work if you
>> distribute your applications internationally. In my system it is not
>> "Desktop", it is "Escritorio", and I guess it will vary with every
>> locale. Does someone know a way to find out what name does the desktop
>> have?
> 
> I believe you need to read the Desktop value from
> 
> """
> HKEY_CURRENT_USER\software\microsoft\windows\currentversion\explorer\shell
> folders
> """
> 
> which should (in my understanding) hold the full path of the
> particular folder(s) of interest at that location, including
> across localizations.
> 
> -tkc

Ideally, use the shell API exposed by pywin32:

<code>
from win32com.shell import shell, shellcon

desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)

</code>

For slight convenience:

   http://timgolden.me.uk/python/winshell.html

TJG


From lasses_weil at klapptsowieso.net  Wed Oct  3 18:47:02 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 04 Oct 2007 00:47:02 +0200
Subject: racism kontrol
In-Reply-To: <mailman.1481.1191444294.2658.python-list@python.org>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>
	<mailman.1481.1191444294.2658.python-list@python.org>
Message-ID: <47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>

Steve Holden wrote:
> Wildemar Wildenburger wrote:
>> (I aplogize for that last remark. I have nothing against turkish 
>> people, I just couldn't let the opportunity for a mean joke slip.)
> 
> Does this mean you are an equal-opportunity racist?
> 
Yeah! Well observed. :)
Although "equal-opportunity misantropist" might be a more fitting term. 
Whatever suits me to express my hatred towards humans. Race, gender, 
text editor ... you name it.

/W
(By the way: Accusing a German of racism is almost too easy an insult. 
Not that I had taken any, just saying.)


From Florian.Lindner at xgm.de  Fri Oct 12 17:04:58 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 23:04:58 +0200
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
Message-ID: <feoni6$h74$02$1@news.t-online.com>

 kyosohma at gmail.com wrote:

> On Oct 12, 2:55 pm, Florian Lindner <Florian.Lind... at xgm.de> wrote:
>> Hello,
>> is there a function in the Python stdlib to test if a string is a valid
>> email address?
>>
>> Thanks,
>>
>> florian
> 
> What do you mean? If you're just testing the construction of the email
> address string, then it's pretty easy. If you want to know if the
> email address is live and works, the only way to reliably find that
> out is to send a test email there to see if it goes through or
> bounces.
> 
> Here's an interesting article on the topic, which is completely non-
> Python related:
> 
>
http://www.oreillynet.com/onlamp/blog/2002/12/how_to_validate_an_email_addre.html

Answer to everybody:

I was just asking for the correct syntax of the mail address. I know about
the various problems actually impossibility to test for a live and valid
address.

Regards,

Florian


From daniel_nolan at msn.com  Mon Oct 29 22:17:19 2007
From: daniel_nolan at msn.com (daniel)
Date: Mon, 29 Oct 2007 19:17:19 -0700
Subject: trouble with PAMIE
Message-ID: <1193710639.580564.319360@y42g2000hsy.googlegroups.com>

I'm trying to use PAMIE to automate some web browsing. My problem is
with the buttonClick() method; it doesn't seem to work when the button
is supposed to open a new window. For example, I can use it to submit
a username and password and advance to the next page but it fails on a
button that opens a PDF Preview in a new window. There is no error
message. Any ideas?



From raims at dot.com  Sat Oct  6 10:04:38 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sat, 6 Oct 2007 16:04:38 +0200
Subject: Yet another comparison of Python Web Frameworks
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<mailman.1608.1191668817.2658.python-list@python.org>
Message-ID: <1i5kk8d.qm6uoao9zyz4N%raims@dot.com>

Tim Chase <python.list at tim.thechases.com> wrote:
> Any respectable comparison of Python web frameworks should
> include evaluation of at least Django and TG.  Or at least give
> good reason why the comparison excludes them.

I think you didn't read the foreword of the comparison. That is by no
means a comprehensive comparison and is not meant to be one. Is a series
of thoughts about the frameworks we already tried (we don't have to
decide today) and the ones we experimented with. Django is not
completely off the radar because I used it extensively this year but the
company has certain requirements and the full stackness of Django is not
really one of our needs.

> Zope is also missing, but I'm not sure Zope qualifies so much as
> a framework, but as an answer to the question "If Emacs were a
> Python web environment, what would it look like?"

Zope2/Plone2 is the one framework they are running away from :-)
More KISS less over engineering, that's the mantra.

> Django's built-in templating system is one of those things you
> either love or you hate.  Fortunately, if you're a hater, you can
> mindlessly swap it out for your template system of choice with
> minimal fuss.

I really, really like Django (and its community and the competence of
the developers) and I think it deserves what it has gained and more but
we are not here to decide who's the best (there's always no best).

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From allen.fowler at yahoo.com  Thu Oct 11 02:53:50 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: Wed, 10 Oct 2007 23:53:50 -0700
Subject: Exceptions: Logging TB and local variables?
In-Reply-To: <470CC4D9.3010401@websafe.com>
References: <1191989030.598822.283420@50g2000hsm.googlegroups.com>
	<470CC4D9.3010401@websafe.com>
Message-ID: <1192085630.373939.121600@d55g2000hsg.googlegroups.com>

> Two possibilieies:
>
> You will need to determine ALL the exceptions that the 3rd party party modules
> can raise.  If they are custom exceptions you will need to import them into your
> application from their modules.
>
> example:
>
> say that 3rd party modules raise TransientError, IOError, and ValueError
> exceptions.  TransientError is a custom exception from module foo
>
> from foo import TransientError
>
> for item in bigset:
>    try:
>      self.__sub1(item)
>      self.__sub2(item)
>      self.__sub3(item)
>    except (TransientError, IOError, ValueError):
>      # Log error and continue to next item in set.
>      log_error_to_file()
>
> 2) Hook exception traceback handler
>
> def myTraceBackHandler(type, value,tb):
>      global <variables I want to dump during traceback>
>      #
>      # This function allows the user to redefine what happens if the program
>      # aborts due to an uncaught exception.
>      # This provides a way to get a "partial" session log if the program
>      # aborts"as well as some information about what caused the program to
>      # abort.
>      #
>      import traceback
>      #
>      # Get traceback lines
>      #
>      tblines=traceback.format_exception(type, value,tb)
>      #
>      # Write some lines to log
>      #
>      log_error_to_file()
>      #
>      # Always write the exceptions to screen
>      #
>      sys.exit('\n'.join(tblines))
>
> Hope this helps.
>
> -Larry

This looks interesting...

What is myTraceBackHandler?  Is it some sort of event handler? Can you
clarify?

Thanks,
Allen







From harlinseritt at yahoo.com  Wed Oct 17 16:54:02 2007
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 17 Oct 2007 13:54:02 -0700
Subject: Pull Last 3 Months
Message-ID: <1192638583.237609.170000@q5g2000prf.googlegroups.com>

Is there a module that can pull str values for say the last 3 months?
Something like:


print lastMonths(3)

['Sep', 'Aug', 'Jul']

Thanks



From a.harrowell at gmail.com  Mon Oct 29 09:13:01 2007
From: a.harrowell at gmail.com (TYR)
Date: Mon, 29 Oct 2007 13:13:01 -0000
Subject: SQLite3; weird error
In-Reply-To: <Xns99D87896DECEEduncanbooth@127.0.0.1>
References: <1193657924.375787.287740@o80g2000hse.googlegroups.com>
	<Xns99D87896DECEEduncanbooth@127.0.0.1>
Message-ID: <1193663581.028879.185480@v3g2000hsg.googlegroups.com>

On Oct 29, 11:51 am, Duncan Booth <duncan.bo... at invalid.invalid>
wrote:
> TYR <a.harrow... at gmail.com> wrote:
> > To do anything with it, you then need to create a cursor object by
> > calling foo's method cursor (bar = foo.cursor).
>
> Perhaps this would work better if you actually try calling foo's method?
>
>         bar = foo.cursor()
>
> Without the parentheses all you are doing is assigning the method to a
> variable, not calling it.

Ah. Apologies for a silly question.



From Caseyweb at gmail.com  Thu Oct  4 11:11:09 2007
From: Caseyweb at gmail.com (Casey)
Date: Thu, 04 Oct 2007 08:11:09 -0700
Subject: What does the syntax [::-1] really mean?
Message-ID: <1191510669.307178.257500@57g2000hsv.googlegroups.com>

I've used [::-1] as a shorthand for reverse on several occasions, but
it occurred to me yesterday I never really thought about why it
works.  First, I checked out the documentation.

>From section 3.6 of the Python Library Reference:

"The slice of s from i to j with step k is defined as the sequence of
items with index x = i + n*k such that 0 <= n < (j-i)/k. In other
words, the indices are i, i+k, i+2*k, i+3*k and so on, stopping when j
is reached (but never including j). If i or j  is greater than len(s),
use len(s). If i or j are omitted or None, they become ``end'' values
(which end depends on the sign of k). Note, k cannot be zero. If k is
None, it is treated like 1."

>From Section 5.3.3 of the Python Language Reference (x[::-1] is a
"proper slice" in the BNF, hence the excerpt):

"The conversion of a proper slice is a slice object (see section 3.2)
whose start, stop and step attributes are the values of the
expressions given as lower bound, upper bound and stride,
respectively, substituting None for missing expressions."

Following the reference to section 3.2 provides a (non-rigorous)
description of what a slice object is, in terms of the extended
slicing semantics.  But it doesn't shed any additional light on the
meaning of [::-1].

>From this, I would expect that x[::-1] would be identical to x[n:0:-1]
(n and 0 being the "end" values, with the order switched due to the
negative step value).  But the clause that "(but never including j)"
means that x[n:0:-1] excludes the 1st element of x, x[0].  A quick
test in ipython confirms that "abc"[3:0:-1] => "cb", not "cba".
Changing the "end" value  to x[n:-1:-1] results in an empty string.

So my question is: "what exactly is [::-1] shorthand for"?  Or is it a
special case, in which case why isn't it  defined as such in the
library?



From steve at holdenweb.com  Wed Oct  3 16:27:07 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 16:27:07 -0400
Subject: spam kontrol
In-Reply-To: <4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>
	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>
Message-ID: <fe0tup$r7t$1@sea.gmane.org>

Wildemar Wildenburger wrote:
> George Sakkis wrote:
>> On Oct 3, 12:59 pm, "oruc... at gmail.com" <oruc... at gmail.com> wrote:
>>> hii
>>> ? think you know spam page is the most pest for net user.
>> ...closely followed in the second position by incoherent misspelled
>> posts in silly IM-speak.
>>
>>
> You know, there are such people as non-native English speakers. Maybe 
> you should consider that before possibly insulting people who do not 
> derserve to be insulted (altough he does appear to be turkish).
> 
> /W
> (I aplogize for that last remark. I have nothing against turkish people, 
> I just couldn't let the opportunity for a mean joke slip.)

Does this mean you are an equal-opportunity racist?

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From bj_666 at gmx.net  Mon Oct 29 05:08:42 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 29 Oct 2007 09:08:42 GMT
Subject: sharing vars with different functions
References: <1193648594.380143.153450@o38g2000hse.googlegroups.com>
Message-ID: <5olm8qFneqbaU1@mid.uni-berlin.de>

On Mon, 29 Oct 2007 09:03:14 +0000, scripteaze at gmail.com wrote:

> Im tryin to call a var thats sitting in a function, example:
> 
> class someclass(object):
>          somevar = open(blah, 'r').readlines()

Thats a class variable.  Is that really what you want!?

> def something():
> 
>         for line in somevar:
>              print line
> -----------------------------------------------------------------------
> 
> i  guess im not graspng the whole global or local var topic..

There is no real global here.  One is (somewhat) local to the class the
other local to the function.

> Any examples??

def something(lines):
    for line in lines:
        print lines

And the call it with the object.

Ciao,
	Marc 'BlackJack' Rintsch


From stefan.behnel-n05pAM at web.de  Sat Oct  6 16:29:29 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Sat, 06 Oct 2007 22:29:29 +0200
Subject: Create a string array of all comments in a html file...
In-Reply-To: <1191166775.660477.97840@o80g2000hse.googlegroups.com>
References: <1191166775.660477.97840@o80g2000hse.googlegroups.com>
Message-ID: <4707F029.1090805@web.de>

sophie_newbie wrote:
> Hi, I'm wondering how i'd go about extracting a string array of all
> comments in a HTML file, HTML comments obviously taking the format
> "<!-- Comment text here -->".
> 
> I'm fairly stumped on how to do this? Maybe using regular expressions?


   from lxml import etree

   parser = etree.HTMLParser()
   tree = etree.parse("somefile.html", parser)

   print tree.xpath("//comment()")


http://codespeak.net/lxml

Stefan


From steve at holdenweb.com  Sun Oct  7 11:57:42 2007
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 07 Oct 2007 11:57:42 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <Xns99C252D1319CElhb123@140.99.99.130>
References: <13frd6vtarbee75@corp.supernews.com>	<fdlat6$c5f$03$1@news.t-online.com>	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
	<Xns99C252D1319CElhb123@140.99.99.130>
Message-ID: <feavlk$7t0$1@sea.gmane.org>

lhb at nowhere.com wrote:
> Wildemar Wildenburger <lasses_weil at klapptsowieso.net> wrote in 
> news:47016899$0$4524$9b4e6d93 at newsspool3.arcor-online.net:
> 
>> While I agree that the word "free" implies "free of monetary cost" to 
>> many people societies, that is by no means set in stone (talk to native 
>> americans, blacks, jews, palestinians, etc. about the word free, see 
>> what they have to say).
> 
> Words are defined by popular usage.  In popular usage, the meaning of free 
> as an adjective depends on the context.  If the adjective is applied to 
> people, it means the opposite of slavery or imprisonment.  If it's applied 
> to something other than people, it means free as in beer.
> 
> For example, a dog with no owner, wandering freely (adverb), would not be 
> called a free dog (adjective), to mean possessing freedom.  Free dog means 
> free as in beer.  Likewise, in popular usage, free software means free as 
> in beer.  People who use it with a different meaning are vainly trying to 
> change its meaning.  But the meanings of words can't be arbitrarily 
> changed, just by dictating different meanings.  The meaning has to be 
> adopted by popular usage, which free-as-in-GPL software has not been.
> 
> Therefore, I propose, using dog freedom as our logic, we call it stray 
> software.

But that sounds like software that may once have had a good home, but 
then one day a pack of stray software came into town and called to its 
wild side, so it left the PC of its birth ... you get the idea. 
Interestingly, this issue does ultimately hinge on ideas of "property" 
and "ownership". Amazon (or their lawyers and marketing department 
together) would like you to believe that "the idea of being able to 
order a product with a single click" is protectable intellectual 
property, but ultimately it will be agreed, I predict, that such claims 
will fail on the grounds of obviousness of invention. though in a 
country where they regularly show fifth graders to be smarter than 
adults on network TV one can never be sure.

A tide is turning in the world of IP, but only just, and so the ebb is 
hardly yet underway.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From steve at REMOVE-THIS-cybersource.com.au  Thu Oct  4 19:11:25 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 04 Oct 2007 23:11:25 -0000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz>
Message-ID: <13gasot6r5bnu1a@corp.supernews.com>

On Thu, 04 Oct 2007 23:01:06 +1300, Lawrence D'Oliveiro wrote:

> In message <13g9ch1fi5c7se5 at corp.supernews.com>, Steven D'Aprano wrote:
> 
>> ... pedants ...
> 
> When people use that word against me, it's generally a sign they're
> trying not to admit I'm right.

Yeah, you keep telling yourself that.

What does type(os.path) return when you try it?



-- 
Steven.


From exarkun at divmod.com  Wed Oct 24 16:01:13 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 24 Oct 2007 16:01:13 -0400
Subject: Socket communication problem
In-Reply-To: <471FA039.2080206@gmail.com>
Message-ID: <20071024200113.8162.602763053.divmod.quotient.27328@ohm>

On Wed, 24 Oct 2007 20:42:49 +0100, Sandy Dunlop <sandy.dunlop at gmail.com> wrote:
>Hi,
>I'm new here, and fairly new to Python. I have been playing around with
>Python and started having a look at socket IO. I have written a script
>that communicates over a network to a server which is written in C.
>While trying to get this working, I have been running into a problem
>where the Python client appears to hang when it should be receiving data
>back from the server.
>
>After a few successful exchanges of data, the server sends 3605 bytes to
>the client, which the client receives. The server then sends 2 bytes to
>the client, and the client doesn't get them. A client program written in
>C# does not have this problem.

Neither the server nor client Python programs you linked to uses the socket
API correctly.  The most obvious mistake is that the code does not check the
return value of socket.send(), which you must do.

Twisted is a third-party library which abstracts many of the low-level
details of the BSD socket API away from you.  You might want to take a
look at it.

Jean-Paul


From mogmios at mlug.missouri.edu  Fri Oct  5 05:20:00 2007
From: mogmios at mlug.missouri.edu (Michael)
Date: Fri, 5 Oct 2007 03:20:00 -0600
Subject: Duplicate content filter..
In-Reply-To: <1191428555.278268.253700@g4g2000hsf.googlegroups.com>
References: <1191428555.278268.253700@g4g2000hsf.googlegroups.com>
Message-ID: <58d0a7010710050220l577d48a3i1e28660ef6c9889f@mail.gmail.com>

Markov chains maybe? You could probably create a pretty fast db of sorts for
checking on word to page relationships and word to word relationships. Or
else a normal db could probably do it pretty fast. Break the page into words
and remove common words (*prepositions, etc)* and keep a database of
word:page pairs. Simply go through the words on the new page and check for
other pages with the same words. If any other page scores to high then there
you go. I'd probably go with the simple chains as it's a lot lighter
solution and could probably be made to be pretty quick.

On 10/3/07, Abandoned <besturk at gmail.com> wrote:
>
> Hi..
> I'm working a search engine project now. And i have a problem. My
> problem is Duplicate Contents..
> I can find the percentage of similarity between two pages but i have a
> 5 millions index and i search 5 million page contents  to find one
> duplicate :(
>
> I want to a idea for how can i find duplicate pages quickly and fast ?
>
> Please help me, i'm sorry my bad english.
> King regards..
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071005/24a85279/attachment.html>

From larry.bates at websafe.com  Wed Oct 31 18:02:49 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 31 Oct 2007 17:02:49 -0500
Subject: Dictionary help
In-Reply-To: <fgaiuk$lsb$1@news.netins.net>
References: <fgaiuk$lsb$1@news.netins.net>
Message-ID: <XeednbkWv4wZZrXanZ2dnUVZ_vrinZ2d@comcast.com>

Steve wrote:
> I'm currently working on a little database type program is which I'm 
> using a dictionary to store the information. The key is a component a and 
> the definition is a list of parts that make up the component. My problem 
> is I need to list out several components, but not all, and there 
> associated parts to a printer. Not having any luck. I can list them to 
> the screen but not the printer. Any help/ideas would be appreciated.
> 
> Steve

Windows or Linux or Mac.  Printers are handled differently on different 
platforms.  On Windows you can simply open LPT1, LPT2 or LPT3 as a file and 
write to it (for simple printing).  For more complex "Windows" printing you must 
use Win32 extensions or something like wxWindows.

-Larry


From tedpottel at gmail.com  Thu Oct 18 19:39:46 2007
From: tedpottel at gmail.com (tedpottel at gmail.com)
Date: Thu, 18 Oct 2007 23:39:46 -0000
Subject: Need scrip to reed rss feeds
Message-ID: <1192750786.466914.109080@v23g2000prn.googlegroups.com>

Hi,
Does any one know whare I can find some code to phrase a rss feeds?
Thank you,
Ted



From george.sakkis at gmail.com  Thu Oct 25 06:24:57 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 25 Oct 2007 10:24:57 -0000
Subject: python project ideas
In-Reply-To: <47206BF0.1060604@web.de>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
	<mailman.442.1193300742.13605.python-list@python.org>
	<47205C66.6090906@web.de>
	<1193303762.909548.199230@50g2000hsm.googlegroups.com>
	<47206BF0.1060604@web.de>
Message-ID: <1193307897.755168.33370@22g2000hsm.googlegroups.com>

On Oct 25, 6:12 am, Stefan Behnel <stefan.behnel-n05... at web.de> wrote:

> Template engines are amongst the things that seem easy enough to look at the
> available software and say "bah, I'll write my own in a day", but are complex
> enough to keep them growing over years until they become as huge and
> inaccessible as all the other implementations. Then it's time for someone else
> to look at it and say "bah, I'll write my own in a day".

QOTW :)



From jim.hefferon at gmail.com  Wed Oct  3 08:03:05 2007
From: jim.hefferon at gmail.com (Jim)
Date: Wed, 03 Oct 2007 05:03:05 -0700
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <mailman.1441.1191406731.2658.python-list@python.org>
References: <mailman.1402.1191343422.2658.python-list@python.org>
	<1191358854.210832.70630@n39g2000hsh.googlegroups.com>
	<mailman.1438.1191403809.2658.python-list@python.org>
	<1191405464.131347.18420@r29g2000hsg.googlegroups.com>
	<mailman.1441.1191406731.2658.python-list@python.org>
Message-ID: <1191412985.267747.151360@50g2000hsm.googlegroups.com>

On Oct 3, 6:18 am, "Jorgen Bodde" <jorgen.maill... at gmail.com> wrote:
> Should I file this as a bug to be solved? I have my workaround now,
> but I read online that more people seem to have ran into this.
Perhaps it is not a bug in that it does not violate the standard.  But
I know that I have been annoyed by it any number of times.  I think it
is fair to say that it violates the principle of least surprise.

IMHO "<action><p>Then a shot rang out.\nHe shouted.</p></action>"
should be pretty-printed as

<action>
  <p>Then a shot rang out.
He shouted.</p>
</action>

That is, I perceive that the "right" behavior is to not add white
space to the textual data.

No doubt this is a matter of taste and of intended audience (and maybe
there are complications that I don't see).  But let me urge you to
send the mataintainers something.

Jim Hefferon



From zentraders at gmail.com  Wed Oct 17 00:33:57 2007
From: zentraders at gmail.com (Zentrader)
Date: Tue, 16 Oct 2007 21:33:57 -0700
Subject: while statements
In-Reply-To: <47150b83$0$11925$9a622dc7@news.kpnplanet.nl>
References: <mailman.62.1192541292.13605.python-list@python.org>
	<47150b83$0$11925$9a622dc7@news.kpnplanet.nl>
Message-ID: <1192595637.706075.76830@q3g2000prf.googlegroups.com>

O> > while cal <=0:
> >    #Prompt for calories
> >        cal = input("Please enter the number of calories in your food: ")
> >        if cal <=0:
> >            print "Error.  The number of calories must be positive."
>
> >    #Prompt for fat
> >        fat = input("Please enter the number of fat grams in your food: ")
> >        if fat <=0:
> >            print "Error.  The number of fat grams must be positive."

You can also use a function
def get_value( lit ):
   ret_val = 0
   while ret_val <= 0:
      ret_val  = input("Please enter the number of %s in your food: "
% (lit))
      if ret_val <=0:
         print "Error.  The number of %s must be positive." % (lit)
   return ret_val
#
cal = get_value( "calories" )
fat = get_value( "fat grams" )
##
## Calculate values, etc.



From __peter__ at web.de  Sat Oct 27 13:31:52 2007
From: __peter__ at web.de (Peter Otten)
Date: Sat, 27 Oct 2007 19:31:52 +0200
Subject: os.walk and recursive deletion
References: <mailman.510.1193501272.13605.python-list@python.org>
Message-ID: <ffvsm8$uuk$01$1@news.t-online.com>

Martin Marcher wrote:

> Hello,
> 
> I'm playing around with os.walk and I made up del_tree(path) which I
> think is correct (in terms of the algorithm, but not as python wants
> it :)).
> 
> As soon as some directory is deleted the iterator of os.walk chokes.
> OK that is somehow clear to me as it can't be valid anymore since it
> can't go to the just deleted directory but it is in the iterator.
> 
> I generated the test data with (bash, don't know of other shell
> expansion features)
> 
> # root="test"
> # mkdir $root
> # mkdir -p
> # $root/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}
> # touch $root/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{0,1,2,3,4,5,6,7,8,9}
> # touch $root/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{0,1,2,3,4,5,6,7,8,9}
> 
> Here goes the script, as far as I tested it it runs fine in test mode.
> Now that is just use the print statements like attached below. as soon
> as os.rmdir and os.unlink are involved the iterator chokes. How do I
> get around that, or what should I use to be able to recursively delete
> everything under a certain subdir?
> 
> #--snip
> import sys
> import os
> import unittest
> 
> def del_tree(path):
>    walker = os.walk(path)
>    for entry in walker:
>       cwd = entry[0]
>       subdirs = entry[1]
>       files = entry[2]
>       print "Checking directory: %s" %(cwd, )
>       if files:
>          for file in files:
>             file = os.path.join(cwd, file)
>             print "The file is now: %s" % (file, )
>             #os.unlink(file)
>          print "OK directory %s has no more files, checking for
> subdirs..." % (cwd, )
>       else:
>          print "OK directory %s NEVER HAD FILES, checking for
> subdirs..." % (cwd, )
>       if not subdirs:
>          print "We can delete: %s" % (cwd, )
>          #os.rmdir(cwd)
>       else:
>          for subdir in subdirs:
>             subdir = os.path.join(cwd, subdir)
>             print "We need to recurse into: %s" % (subdir, )
>             del_tree(subdir)
>    #os.rmdir(path)
>    print "Removing: %s" % (path, )
> #--snap

While it is possible to mix recursion and os.walk()...

def del_tree(path):
    for cwd, subdirs, files in os.walk(path):
        print "Checking directory: %s" %(cwd, )
        if files:
            for file in files:
                file = os.path.join(cwd, file)
                print "The file is now: %s" % (file, )
                os.unlink(file)
            print "OK directory %s has no more files, checking for subdirs..." % (cwd, )
        else:
            print "OK directory %s NEVER HAD FILES, checking for subdirs..." % (cwd, )
        for subdir in subdirs:
            subdir = os.path.join(cwd, subdir)
            print "We need to recurse into: %s" % (subdir, )
            del_tree(subdir)
        break # ugly but necessary
    print "Removing: %s" % (path, )
    os.rmdir(path)

...the idea behind it is that you use it instead of recursion:

def del_tree(root):
    for path, dirs, files in os.walk(root, False):
        for fn in files:
            os.unlink(os.path.join(path, fn))
        for dn in dirs:
            os.rmdir(os.path.join(path, dn))
    os.rmdir(root)

The second parameter to os.walk() ensures that the tree is walked
depth-first, i. e. the contents of a directory are seen before the
directory itself. Personally, I would prefer a recursive implementation
based on os.listdir(),

def del_tree(root):
    for name in os.listdir(root):
        path = os.path.join(root, name)
        if os.path.isdir(path):
            del_tree(path)
        else:
            os.unlink(path)
    os.rmdir(root)

an approach that is also taken by shutils.rmtree().

Peter


From george.sakkis at gmail.com  Thu Oct 18 01:33:48 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 18 Oct 2007 05:33:48 -0000
Subject: Noob questions about Python
In-Reply-To: <1192659838.773066.160060@i38g2000prf.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192659838.773066.160060@i38g2000prf.googlegroups.com>
Message-ID: <1192685628.782748.30760@v29g2000prd.googlegroups.com>

On Oct 17, 6:23 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 17, 10:58 pm, Ixiaus <parnel... at comcast.net> wrote:
>
>
>
> > Thank you for the quick responses.
>
> > I did not know that about integer literals beginning with a '0', so
> > thank you for the explanation. I never really use PHP except for
> > handling basic forms and silly web stuff, this is why I picked up
> > Python because I want to teach myself a more powerful and broad
> > programming language.
>
> > With regard to why I asked: I wanted to learn about Binary math in
> > conjunction with Python, so I wrote a small function that would return
> > a base 10 number from a binary number. It is nice to know about the
> > int() function now.
>
> > Just for the sake of it, this was the function I came up with:
>
> > def bin2dec(val):
> >     li = list(val)
> >     li.reverse()
> >     res = [int(li[x])*2**x for x in range(len(li))]
> >     res.reverse()
> >     print sum(res)
>
> > Now that I look at it, I probably don't need that last reverse()
> > because addition is commutative...
>
> > def bin2dec(val):
> >     li = list(val)
> >     li.reverse()
> >     res = [int(li[x])*2**x for x in range(len(li))]
> >     print sum(res)
>
> Right idea: now to remove all those intermediate lists you construct.
> 1. reversed(val) creates an iterator that runs over the elements (here
> of a string) in reverse order.
> 2. enumerate() is usually better than using an explicit list index.
> 3. You can use a generator in your sum to avoid constructing the final
> list.
>
> Applying these to your function, and noting that n << k is nicer than
> n * 2 ** k, we get a one-liner:
>
> def bin2dec(val):
>     return sum(int(i) << k for k, i in enumerate(reversed(val)))
>
> Or a slightly nicer alternative is to filter the generator using 'if':
>
> def bin2dec(val):
>     return sum(1 << k for k, i in enumerate(reversed(val)) if int(i))

Changing the condition to if i=='1' makes it than twice faster.
There's also a small improvement by looping forward rather than
reversed:

def bin2dec_2(val):
    n = len(val)-1
    return sum(1<<n-i for i,bit in enumerate(val) if bit=='1')

These one-liners are short and sweet and have decent performance for
most use cases. Still, for squeezing every last drop of performance
while staying in pure Python, use Psyco and a more verbose version.
The following is two orders of magnitude faster with Psyco enabled:

def bin2dec_3(val):
    s = 0
    p = 1 << len(val)
    for bit in val:
        p >>= 1
        if bit == '1':
            s += p
    return s

And here's the benchmark:

if __name__ == '__main__':
    # uncomment for Psyco
    # import psyco; psyco.full()
    import timeit
    setup = 'import __main__; bin="101001010001001010"'
    for func in bin2dec, bin2dec_2, bin2dec_3:
        name = func.__name__
        timer = timeit.Timer('__main__.%s(bin)' % name, setup)
        print '%s: %s' % (name, timer.timeit())

### Without Psyco ####
bin2dec: 17.6126108206
bin2dec_2: 7.57195732977
bin2dec_3: 5.46163297291

### With Psyco ####
bin2dec: 17.6995679618
bin2dec_2: 8.60846224869
bin2dec_3: 0.16031255369

George



From timaranz at gmail.com  Thu Oct  4 16:00:39 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Thu, 04 Oct 2007 13:00:39 -0700
Subject: Boolean parser..
In-Reply-To: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
Message-ID: <1191528039.339381.47220@d55g2000hsg.googlegroups.com>

On Oct 5, 7:29 am, Abandoned <best... at gmail.com> wrote:
> Hi..
> I try a boolean parser in python since 1 weak.. But i can't do this
> because this is very complicated :(
> Do you know any blooean parser script in python or how do i write a
> boolean parser ?
> example query: ((google or yahoo) or (live msn)) not web
> I'm sorry my bad english.
> King Regards..

Try the pyparsing module (google it)
They have several examples.



From lasses_weil at klapptsowieso.net  Sun Oct 28 10:47:55 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 28 Oct 2007 15:47:55 +0100
Subject: Return value from os.system() call
In-Reply-To: <mailman.535.1193581643.13605.python-list@python.org>
References: <mailman.535.1193581643.13605.python-list@python.org>
Message-ID: <4724a11f$0$16662$9b4e6d93@newsspool3.arcor-online.net>

Calder Coalson wrote:
> I was searching for ways to get the return value from os.system() calls, 
> when I came across this from 6 years ago.  I tried what was suggested in 
> this thread, but
> output = os.popen("/tmp/other").read()
> returns
> sh: line 1: /tmp/other: Permission denied
> 

I would assume that this is an OS problem more than a python problem. Do 
you have write access to /tmp/other?
I'm fairly sure its a permission thing.

/W


From nagle at animats.com  Sat Oct 20 11:42:15 2007
From: nagle at animats.com (John Nagle)
Date: Sat, 20 Oct 2007 08:42:15 -0700
Subject: Dealing with "funny" characters
In-Reply-To: <mailman.259.1192890437.13605.python-list@python.org>
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
	<mailman.259.1192890437.13605.python-list@python.org>
Message-ID: <LlpSi.6020$y21.124@newssvr19.news.prodigy.net>

Gert-Jan wrote:
> sophie_newbie schreef:
>> Hi, I want to store python text strings that characters like "?" "?"
>> in a mysql varchar text field. Now my problem is that mysql does not
>> seem to accept these characters. I'm wondering if there is any way I
>> can somehow "encode" these characters to appear as normal characters
>> and then "decode" them when I want to get them out of the database
>> again?
> 
> 
> It seems you'll have to use Unicode in your program rather than 'plain' 
> strings.
> 
> Before storing an unicode textstring in a database or a file, you must 
> encode it using an appropriate encoding/codepage, for example:
> 
> outputstring = unicodeobject.encode('utf-8')

    No, no, that's wrong.  MySQL and the Python interface to it understand
Unicode.  You don't want to convert data to UTF-8 before putting it in a
database; the database indexing won't work.

    Here's how to do it right.

    First, tell MySQL, before you create your MySQL tables, that the tables are
to be stored in Unicode:

	ALTER database yourdatabasename DEFAULT CHARACTER SET utf8;

You can also do this on a table by table basis, or even for single fields,
but you'll probably get confused if you do.

    Then, when you connect to the database in Python, use something like this:

	db = MySQLdb.connect(host="localhost",
		use_unicode = True, charset = "utf8",
		user=username, passwd=password, db=database)

That tells MySQLdb to talk to the database in Unicode, and it tells the database
(via "charset") that you're talking Unicode.

    Within Python, you can use Unicode as well.  If you have a Unicode text
editor, you can create Python source files in Unicode and have Unicode text
constants in quotes.  If you do this, you should put

	# -*- coding: UTF-8 -*-

as the first line of Python files.  Quoted constants should be written
as

	s = u'Test'

rather than

	s = 'Test'

Instead of "str()", use "unicode()".

Once everything is set up like this, you can pass Unicode in and out of MySQL
databases freely, and all the SQL commands will work properly on Unicode data.

					John Nagle

	





From thermostat at gmail.com  Wed Oct 24 11:47:15 2007
From: thermostat at gmail.com (Dan)
Date: Wed, 24 Oct 2007 15:47:15 -0000
Subject: optparse help output
Message-ID: <1193240835.563154.113810@e9g2000prf.googlegroups.com>

I've been using optparse for a while, and I have an option with a
number of sub-actions I want to describe in the help section:

    parser.add_option("-a", "--action",
                      help=\
"""Current supported actions: create, build, import, exp_cmd and
interact.

create   -- Vaguely depreciated, should create a new project, but it
is
            not currently suppored. First create a project in SVN,
then
            use import.

build    -- Build the project (invoking make usually).

import   -- Put the project under metaman control. Assumes that
            the current working directory is a SVN-controlled
            sandbox. Metaman checks out its own copy, does analysis
            to determine dependencies and the metadata to be
collected.

interact -- Creates a MetaMan object and starts the python interactive
            interpreter. Designed for debugging or advanced usage.
            The MetaMan object is bound to the identifier 'mm'. Only
            use this option if you know what you're doing.

exp_cmd --  add an experiment for strataman.
""")

Unfortunately, when I run the script with --help, this is what I get
for the -a option:
  -aACTION, --action=ACTION
                        Current supported actions: create, build,
import,
                        exp_cmd and interact.  create   -- Vaguely
depreciated,
                        should create a new project, but it
is             not
                        currently suppored. First create a project in
SVN, then
                        use import.  build    -- Build the project
(invoking
                        make usually).  import   -- Put the project
under
                        metaman control. Assumes that             the
current
                        working directory is a SVN-controlled
                        sandbox. Metaman checks out its own copy, does
analysis
                        to determine dependencies and the metadata to
be
                        collected.  interact -- Creates a MetaMan
object and
                        starts the python interactive
interpreter.
                        Designed for debugging or advanced usage.
                        The MetaMan object is bound to the identifier
'mm'.
                        Only             use this option if you know
what
                        you're doing.  exp_cmd --  add an experiment
for
                        strataman.

Is there any way to get the formatting I want?

-Dan



From gagsl-py2 at yahoo.com.ar  Tue Oct  2 23:27:48 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 00:27:48 -0300
Subject: LastWriteTime in windows registry
References: <EF20B7056AB35C49BDF6A6D6D5FEF3D103F1AE@cvn65ucsex2.cvn65.navy.mil>
	<4701F14F.6020501@timgolden.me.uk>
Message-ID: <op.tzlqkmh7x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 02 Oct 2007 04:20:47 -0300, Tim Golden <mail at timgolden.me.uk>  
escribi?:

> Peters, Matthew J. ET3 wrote:
>>             I'm looking for a way to read the lastwritetime property of
>> a windows registry key.  ... I found the function in perl
>
> So what does the Perl source say? It presumably hooks some kind
> of Windows API. Take that and, if it isn't already exposed via
> pywin32, use ctypes to get hold of it.

It's already present: see win32api.RegQueryInfoKey

-- 
Gabriel Genellina



From ptmcg at austin.rr.com  Wed Oct 17 16:37:25 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Wed, 17 Oct 2007 13:37:25 -0700
Subject: pyparsing batch file
In-Reply-To: <mailman.135.1192650615.13605.python-list@python.org>
References: <mailman.135.1192650615.13605.python-list@python.org>
Message-ID: <1192653445.765147.204870@y27g2000pre.googlegroups.com>

On Oct 17, 4:47 pm, Fabian Braennstroem <f.braennstr... at gmx.de> wrote:
<snip>
> Unfortunately, it does not parse the whole file names with
> the underscore and I do not know yet, how I can access the
> line with 'define/boundary-conditions'. Every 'argument' of
> that command should become a separate python variable!?
> Does anyone have an idea, how I can achieve this!?
> Regards!
> Fabian

You are trying to match "keps1500_500.dat" with the expression
"Word(alphanums)".  Since the filename contains characters other than
alphas and numbers, you must add the remaining characters ("." and
"_") to the expression.  Try changing:

write= Word(alphanums)

to:

write= Word(alphanums+"._")


To help you to parse "/define/boundary-conditions in velocity-inlet 10
0.1 0.1 no 1", we would need to know just what these arguments are,
and what values they can take.  I'll take a wild guess, and propose
this:

real = Combine(integer + "." + integer)
defineBoundaryConditions = "/define/boundary-conditions" + \
    oneOf("in out inout")("direction") + \
    Word(alphanums+"-")("conditionName") + \
    integer("magnitude") + \
    real("initialX") + \
    real("initialY") + \
    oneOf("yes no")("optional") + \
    integer("normal")

(Note I am using the new notation for setting results names,
introduced in 1.4.7 - simply follow the expression with ("name"),
instead of having to call .setResultsName.)

And here is a slight modification to your printout routine, using the
dump() method of the ParseResults class:

for tokens in defineBoundaryConditions.searchString(data):
    print
    print "Boundary Conditions = "+ tokens.conditionName
    print tokens.dump()
    print
    print 50*"-"


prints:

Boundary Conditions = velocity-inlet
['/define/boundary-conditions', 'in', 'velocity-inlet', '10', '0.1',
'0.1', 'no', '1']
- conditionName: velocity-inlet
- direction: in
- initialX: 0.1
- initialY: 0.1
- magnitude: 10
- normal: 1
- optional: no





From adurdin at gmail.com  Mon Oct 15 10:27:20 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Mon, 15 Oct 2007 15:27:20 +0100
Subject: EasyMock for python ?
In-Reply-To: <87ve9d9icx.fsf@benfinney.id.au>
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
	<87ve9d9icx.fsf@benfinney.id.au>
Message-ID: <59e9fd3a0710150727v5dc56210vf63ac000a094d190@mail.gmail.com>

On 10/12/07, Ben Finney <bignose+hates-spam at benfinney.id.au> wrote:
>
> I've had good results with Ian Bicking's 'minimock.py'
> <URL:http://blog.ianbicking.org/minimock.html>. It uses the existing
> 'doctest' functionality for its output, and a minimock.Mock will mock
> *everything* (using further Mock instances for attributes and methods)
> unless explicitly told otherwise.

One problem I can see with the current implementation of using
minimock + doctest is that if you have more than one mock object
needed for a particular function call in a test, the output from each
mock will be interleaved;  there should really be some way to use
minimock so that you can output a call log from each mock individually
after calling the function to test.

Of course, that might need to be a feature in
still_small_but_slightly_large_than_minimock.py ;-)

Andrew


From tdwdotnet at gmail.com  Tue Oct  9 07:38:02 2007
From: tdwdotnet at gmail.com (Tim Williams)
Date: Tue, 9 Oct 2007 12:38:02 +0100
Subject: Editing particular lines of a text file.
In-Reply-To: <1191928770.776311.226710@r29g2000hsg.googlegroups.com>
References: <1191928770.776311.226710@r29g2000hsg.googlegroups.com>
Message-ID: <9afea2ac0710090438t1c4c1635ub86c77f948cbf054@mail.gmail.com>

On 09/10/2007, Shriphani <shriphanip at gmail.com> wrote:
> Hello all,
>
> I am trying to create a script that looks at specific strings in a
> file like:
>
> msgid "I am a disco dancer."
>
> and compares the part in quotes to the keys in a dictionary, finds the
> value and creates a new line right after this string in the file. I
> have planned to write this as follows:
>
> 1. Open the file in read mode
> 2. parse each line to figure out which line contains "msgid" and use
> the shlex module's split method to go and split this line and pick the
> 2nd element list[1].
> 3. find the value from the dictionary corresponding to the above
> element.
> 4. Insert the line. This part is where I face a problem. How do I
> plainly edit just one line. I would also like to look at some sample
> code that does this.
> 5. open a new file and write the new file with the inserted strings to
> it.
> 6. close both files opened.


infile = open('infile.txt')
outfile = open('outfile.txt','w')
for line in infile:
    if 'msgid' in line:
         #  transform line
         #  make sure the line ending is intact
    outfile.write(line)
infile.close()
outfile.close()

or maybe

infile = open('infile.txt')
outfile = open('outfile.txt','w')
new_file = []
for line in infile:
    if 'msgid' in line:
         #  transform line
         #  make sure the line ending is intact
    new_file.append(line)
outfile.write(''.join(new_file)
infile.close()
outfile.close()




-- 

Tim Williams


From ed at leafe.com  Fri Oct 26 11:35:08 2007
From: ed at leafe.com (Ed Leafe)
Date: Fri, 26 Oct 2007 11:35:08 -0400
Subject: [ANN] Dabo 0.8.2 Released
Message-ID: <71A2365A-7028-4121-856B-B86E6FCAFFB4@leafe.com>

	We are pleased to announce the release of Dabo 0.8.2, the latest  
version of our desktop application framework. It is available on our  
download page: http://dabodev.com/download

	If you're not familiar with Dabo, it is the leading framework for  
building desktop applications in Python. You can get more information  
about Dabo on our website: http://dabodev.com

	Probably the biggest change is in the way we will be handling  
updates and releases. We will no longer maintain separate 'stable'  
and 'development' versions, as the 'stable' got out-of-date so  
quickly that the name became ironic. Instead, we will only have a  
single development branch.

	What's made this possible is the incorporation of Web Update into  
the framework. This will check our servers regularly for updates, and  
notify you if any are available. If you want to grab those updates,  
you simply need to click the 'OK' button, and your framework is  
updated for you. Of course, nothing is ever updated without you  
knowing about it, and you can turn the whole thing off if you so desire.

	We are also including DaboDemo and the visual tools in the download,  
instead of making you grab those separately. We plan on integrating  
Web Update-like features into these in the near future.

	As usual, there have been a bunch of minor changes and bugfixes;  
instead of including them here, you can see them at: http:// 
svn.dabodev.com/dabo/tags/dabo-0.8.2/ChangeLog

-- Ed Leafe
-- http://leafe.com
-- http://dabodev.com



From python.comp.lang.id982 at vbgunz.com  Fri Oct  5 12:27:53 2007
From: python.comp.lang.id982 at vbgunz.com (Victor B. Gonzalez)
Date: Fri, 5 Oct 2007 12:27:53 -0400
Subject: "SyntaxError: Non-ASCII character '\xc2'...",
	was Re: Is there a nicer way to do this?
In-Reply-To: <fe4pcn$49q$03$1@news.t-online.com>
References: <87ejgawpug.fsf@keizer.soze.com>
	<mailman.1543.1191536699.2658.python-list@python.org>
	<fe4pcn$49q$03$1@news.t-online.com>
Message-ID: <200710051227.53254.python.comp.lang.id982@vbgunz.com>

On Friday 05 October 2007 3:33:43 am Peter Otten wrote:
> Victor B. Gonzalez wrote:
> > anyhow, I keep getting "SyntaxError: Non-ASCII character '\xc2'..." on
> > line 5. anyone know what this is?
>
> I too had that problem with KNode. Leading space consists of NO-BREAK SPACE
> (unichr(160)) which translates to '\xc2\xa0' in UTF-8. As I don't see this
> problem here (using pan) I suspect it may be specific to KMail/KNode.
>
> Peter

You're right, thank you for pointing that out. I am bad with almost anything 
like \this but stripping off the leading whitespace solved the issue. thank 
you for the heads up!

-- 
Best Regards
Victor B. Gonzalez


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 18 09:29:59 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 15:29:59 +0200
Subject: Noob questions about Python
In-Reply-To: <471758e0$0$8995$9b622d9e@news.freenet.de>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>	<47166b47$0$5248$426a74cc@news.free.fr>
	<471758e0$0$8995$9b622d9e@news.freenet.de>
Message-ID: <47175fd6$0$12504$426a74cc@news.free.fr>

Stargaming a ?crit :
> On Wed, 17 Oct 2007 22:05:36 +0200, Bruno Desthuilliers wrote:
> [snip]
>> Note that there's also the reverse() function that returns a reverse
>> iterator over any sequence, so you could also do:
>>
>> li = list('allo')
>> print ''.join(reverse(li))
>>
> 
> Note this certainly should've been `reversed()`, with a trailing 'd'.

2-0 for Stargaming. I'll have to either change glasses, buy a new 
keyboard (this one is obviously broken), or learn to both use a keyboard 
and re-read what I post.


From python.list at tim.thechases.com  Thu Oct 11 19:23:59 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 11 Oct 2007 18:23:59 -0500
Subject: remove header line when reading/writing files
In-Reply-To: <470EAFA2.2060409@tim.thechases.com>
References: <1192143175.137620.319470@q5g2000prf.googlegroups.com>
	<470EAFA2.2060409@tim.thechases.com>
Message-ID: <470EB08F.6000607@tim.thechases.com>

Forgot the enumerate call of all things

> for zipfile in filelist:
> 	for i, line in enumerate(gzip.Gzipfile(zipfile,'r')):
> 		if i: outfile.write(line)


Some days, I'm braindead.

-tkc




From duncan.booth at invalid.invalid  Wed Oct  3 17:06:18 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 3 Oct 2007 21:06:18 GMT
Subject: Convert on uppercase unaccentent unicode character
References: <Xns99BED1C4FA1CFduncanbooth@127.0.0.1>
	<mailman.1483.1191444874.2658.python-list@python.org>
Message-ID: <Xns99BEE0D44EC14duncanbooth@127.0.0.1>

Steve Holden <steve at holdenweb.com> wrote:

>> No, that will uppercase the string, but it doesn't (and shouldn't)
>> strip the accents:
>> 
> I can agree that is doesn't (though I am taking your word for it), but
> a French person will definitely feel it's doing the wrong thing. Upper
> case letters aren't accented in written French.
> 
I didn't know that, and I'm not sure I believe it: but then the French 
tend to have conventions honoured more in the breach than the observance. I 
just hit a few French websites, and the first one that I found which had 
any capital letters that might be accented had four accented capital 
letters on its front page (two capitalized words and two words in block 
capitals).


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 13:30:28 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 18:30:28 +0100
Subject: Built-in functions and keyword arguments
In-Reply-To: <1193672801.382944.42180@57g2000hsv.googlegroups.com>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<1193672801.382944.42180@57g2000hsv.googlegroups.com>
Message-ID: <472618b2$0$11442$426a74cc@news.free.fr>

Armando Serrano Lombillo a ?crit :
> On Oct 29, 3:20 pm, Bruno Desthuilliers <bruno.
> 42.desthuilli... at wtf.websiteburo.oops.com> wrote:
>> Armando Serrano Lombillo a ?crit :
>>
>>> Why does Python give an error when I try to do this:
>>>>>> len(object=[1,2])
>>> Traceback (most recent call last):
>>>   File "<pyshell#40>", line 1, in <module>
>>>     len(object=[1,2])
>>> TypeError: len() takes no keyword arguments
>>> but not when I use a "normal" function:
>>>>>> def my_len(object):
>>>    return len(object)
>>>>>> my_len(object=[1,2])
>>> 2
>> In the second case, the name of the argument *is* 'object'. Which is not
>> the case for the builtin len (which, fwiw, has type
>> 'builtin_function_or_method', not 'function', so inspect.getargspec
>> couldn't tell me more).
> 
> so that's the point, built-in functions don't behave as normal
> functions.

>> <ot>
>> While we're at it, you should avoid using builtin's names for
>> identifiers - here, using 'object' as the arg name shadows the builtin
>> 'object' class).
>> </ot>
> 
> As Duncan points out, I was using the name object because it's what
> you get when you type help(len) 

That what I thought. But anyway, you're not the only person reading this 
newsgroup, and there are a couple gotchas that are worth pointing out 
for those who don't know yet.

>(or in the calltips, or in). Anyway, I
> don't think there's any harm in overriding a builtin name in such a
> small scope 

In this specific case, possibly - because there are few chances you need 
to get at the builtin object type here. Still, it's better to avoid 
shadowing builtin names IMHO - if only for readability.


From bscrivener42 at gmail.com  Sat Oct 27 13:45:47 2007
From: bscrivener42 at gmail.com (BartlebyScrivener)
Date: Sat, 27 Oct 2007 17:45:47 -0000
Subject: how to creating html files with python
In-Reply-To: <1193504578.745710.166190@k35g2000prh.googlegroups.com>
References: <mailman.511.1193501565.13605.python-list@python.org>
	<1193504578.745710.166190@k35g2000prh.googlegroups.com>
Message-ID: <1193507147.745397.148340@57g2000hsv.googlegroups.com>

On Oct 27, 12:02 pm, George Sakkis <george.sak... at gmail.com> wrote:

> The only strange thing here is that you think this is a strange
> requirement :) This is quite typical, and practically required for web
> development.

I was wondering about this myself the other day. Suppose you wanted to
get by on the cheap without setting up a whole new Joomla or WordPress
installation for another smallish blog or website where you are the
only poster, and all you need is simple CMS.

How hard would it be to create, say, a calendar of events, or news
postings using MySQL and Python and HTML. Create the page on your
local machine using Python templating, and then just post the HTML
code daily?

I'm a rank amateur, but was wondering if this is silly and making
work, or if one of those templating systems you all are mentioning
would work for simple CMS and calendaring?

Thanks,

rd




From mogmios at mlug.missouri.edu  Mon Oct  8 06:03:37 2007
From: mogmios at mlug.missouri.edu (Michael)
Date: Mon, 8 Oct 2007 04:03:37 -0600
Subject: Top Programming Languages of 2013
In-Reply-To: <20071007060510.5DC811E4006@bag.python.org>
References: <20071007060510.5DC811E4006@bag.python.org>
Message-ID: <58d0a7010710080303y4e247282jaef5bef3c7253181@mail.gmail.com>

I'd guess that by 2013 we'll be using a slightly more graceful, but still
horribly wrong (and unsupported by IE 7.666), redo of HTML, CSS, Javascript,
Flash, and Java with a poorly conceived back-end marriage of PHP + MySQL or
some horrible Microsoft technology for most apps. I'll also venture that as
great as Python is it won't have settled on a really good web development
framework by then because half it's fans want to copy bloat like Ruby on
Rails or .NET and the other half want to be able to develop every line of
code themselves and none of them can agree on a single stable easy-to-use
Pythonic platform. We still won't have a Python-based Javascript replacement
either because nobody can get motivated to replace the crappy client-side
scripting language web developers have come to know and hate.

2013 isn't that far away. A few buzzwords will become boring by then and
we'll mostly be doing what we're doing now.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071008/9fd54a59/attachment.html>

From steven.bethard at gmail.com  Sun Oct  7 13:25:48 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 07 Oct 2007 11:25:48 -0600
Subject: weakrefs and bound methods
In-Reply-To: <47090ee0$0$11610$3b214f66@tunews.univie.ac.at>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<47090ee0$0$11610$3b214f66@tunews.univie.ac.at>
Message-ID: <ItGdnatWUYcBi5TanZ2dnUVZ_q2hnZ2d@comcast.com>

Mathias Panzenboeck wrote:
> Marc 'BlackJack' Rintsch wrote:
>> ``del b`` just deletes the name `b`.  It does not delete the object. 
>> There's still the name `_` bound to it in the interactive interpreter. 
>> `_` stays bound to the last non-`None` result in the interpreter.
> 
> Actually I have the opposite problem. The reference (to the bound method)
> gets lost but it shouldn't!

Ahh, so you expected that ``Wrapper(self._foo)`` would not immediately 
lose the reference?  It will, because every time you write 
``self._foo``, a new bound method is created::

     >>> class C(object):
     ...     def foo(self):
     ...         pass
     ...
     >>> f = C.foo
     >>> g = C.foo
     >>> id(f), id(g)
     (14931448, 14891008)

Thus, there is only the one reference to the bound method, and by 
wrapping it in a weakref, you are allowing it to disappear immediately::

     >>> x = weakref.ref(C.foo)
     >>> print x()
     None

What behavior do you want here?  That is, when were you hoping that the 
bound method would disappear?

STeVe


From bj_666 at gmx.net  Sat Oct  6 02:28:51 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 6 Oct 2007 06:28:51 GMT
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
	<fe4mst$jic$1@lust.ihug.co.nz> <5mm85kFe9gesU1@mid.uni-berlin.de>
	<fe798f$8h7$1@lust.ihug.co.nz>
Message-ID: <5moo92Fehnl3U1@mid.uni-berlin.de>

On Sat, 06 Oct 2007 19:16:47 +1300, Lawrence D'Oliveiro wrote:

> In message <5mm85kFe9gesU1 at mid.uni-berlin.de>, Marc 'BlackJack' Rintsch
> wrote:
> 
>> To me a `variable` is made of a name, a memory address, a data type, and
>> a value.  In languages like C the address and type are attached to the
>> name while in Python both are attached to the value.
> 
> How does C++ with RTTI fit into your picture, then?

I'm no C++ expert but I'd say the type is attached to the value too there.
Same is true for Java.

Ciao,
	Marc 'BlackJack' Rintsch


From stef.mientki at gmail.com  Thu Oct  4 18:06:29 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Fri, 05 Oct 2007 00:06:29 +0200
Subject: Howto Launch a windows application ?
In-Reply-To: <1191451269.731350.134600@g4g2000hsf.googlegroups.com>
References: <mailman.1484.1191447580.2658.python-list@python.org>
	<1191451269.731350.134600@g4g2000hsf.googlegroups.com>
Message-ID: <470563E5.30609@gmail.com>

Matimus wrote:
> stef mientki wrote:
>   
>> hello,
>>
>> I'm trying to launch a windows application,
>> but as many others on this list, I've some trouble.
>> I read some other threads about this topic,
>> but sorry, I still don't understand all this (never heard of pipes).
>>
>> When I use a batch file, I can launch the bat-file from python,
>> and the windows application launched from the batchfile is run perfectly.
>>
>> Now when I try to run the same windows application from Popen or call,
>> nothing happens (or at least it's very fast and produces not the
>> expected output).
>>
>> Please enlighten me, preferable in "windows-terminology"  ;-)
>>
>> thanks,
>> Stef Mientki
>>
>> from subprocess import *
>>
>> cmd =[]
>> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
>> cmd.append ( '-long-start' )
>> cmd.append ( '-d')
>> cmd.append ( '-clear' )
>> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
>> cmd.append ( 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
>> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>>
>> # DOESN'T WORK
>> result = call ( cmd )
>>
>> # Both Popen and call work
>> cmd = [ 'd:\\data_actueel\\d7_test_browser\\JALcc.bat' ]
>> #output = Popen ( cmd )
>> result = call ( cmd )
>> print result
>>     
>
> My guess is that with the redirect you simple need to set the 'shell'
> option to true.
>
> call(cmd, shell=True)
>
> I haven't tested it, but it is worth a try.
>
>   
thanks, I tried, but it didn't work.

cheers,
Stef

> Matt
>
>   



From bj_666 at gmx.net  Sat Oct 27 16:01:23 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 27 Oct 2007 20:01:23 GMT
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<1193494184.618613.81090@50g2000hsm.googlegroups.com>
	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
	<1193501811.620522.261570@o80g2000hse.googlegroups.com>
	<mailman.514.1193509692.13605.python-list@python.org>
Message-ID: <5ohjojFmgu6mU7@mid.uni-berlin.de>

On Sat, 27 Oct 2007 13:28:02 -0500, Tim Chase wrote:

>>> Even clearer is not to allow octal literals :) Is there *any* use for
>>> them?
>> 
>> The mode argument to os.chmod.
> 
> You mean instead of
> 
>   import this
>   os.chmod(filename, os.R_OK | os.W_OK | os.X_OK)
> 
> which explicitly (rather than implicitly) spells it out?

And the equivalent of ``os.chmod(filename, 0777)`` looks like what!?

Ciao,
	Marc 'BlackJack' Rintsch


From chris.lyon at spritenote.co.uk  Wed Oct 31 23:09:24 2007
From: chris.lyon at spritenote.co.uk (wyleu)
Date: Wed, 31 Oct 2007 20:09:24 -0700
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <4728cda0$0$4583$9b622d9e@news.freenet.de>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
	<1193813238.978699.154830@57g2000hsv.googlegroups.com>
	<47288E4D.6010301@v.loewis.de>
	<1193847896.441329.315560@o80g2000hse.googlegroups.com>
	<4728afce$0$7845$9b622d9e@news.freenet.de>
	<1193853812.998544.113780@y27g2000pre.googlegroups.com>
	<4728cda0$0$4583$9b622d9e@news.freenet.de>
Message-ID: <1193886564.331628.93620@22g2000hsm.googlegroups.com>

On 31 Oct, 18:46, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
> >  Those TK libraries  tcllib=None tklib=None tcl_includes=None
> > tk_includes=None
>
> This also contradicts your earlier statement that you have libtk8.4.so
> on your machine.


[chris at localhost Python-2.5.1]$ ls -las /usr/lib/libtk*.*
  0 lrwxrwxrwx 1 root root     13 Oct 31 07:43 /usr/lib/libtk8.4.so ->
libtk8.4.so.0*
969 -rwxr-xr-x 1 root root 986216 Apr 21  2006 /usr/lib/libtk8.4.so.0*
  1 -rwxr-xr-x 1 root root    119 Apr 21  2006 /usr/lib/libtk.so*
183 -rw-r--r-- 1 root root 186092 Apr 21  2006 /usr/lib/libtkstub8.4.a


lib_dir:['/usr/local/lib', '/lib64', '/usr/lib64', '/lib', '/usr/lib']
Inc_dir:['./Include', '.', '/usr/local/include', '/home/chris/
Python-2.5.1/Include', '/home/chris/Python-2.5.1', '/usr/include']


so if libtk is being looked for it should have found it.

and indeed it did!!
from the print in distutils in unixccompiler.py

shared=/usr/lib/libtk8.4.so
 dylib=/usr/lib/libtk8.4.dylib
 static=/usr/lib/libtk8.4.a

FOUND!:-/usr/lib/libtk8.4.so
tklib:-/usr/lib/libtk8.4.so


but no tcllib !!!
perhaps that's the problem? Did I assume that it was installed by the
tk mandriva module ?

Perhaps theres a libtcl module to load...
Indeed there is !

787 -rwxr-xr-x 1 root root 800132 Apr 21  2006 /usr/lib/libtcl8.4.so.
0*
  1 -rwxr-xr-x 1 root root    122 Apr 21  2006 /usr/lib/libtcl.so*
 75 -rw-r--r-- 1 root root  75232 Apr 21  2006 /usr/lib/
libtclstub8.4.a


It would seems so !

Thus after make,su, make install...

[root at localhost Python-2.5.1]# python2.5
Python 2.5.1 (r251:54863, Oct 30 2007, 19:01:24)
[GCC 4.1.1 20060724 (prerelease) (4.1.1-3mdk)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import _tkinter
>>>




Thank you very much for your help Martin. much learned.




From eu_my123 at hotmail.com  Fri Oct 12 12:28:01 2007
From: eu_my123 at hotmail.com (TidyTrax@2)
Date: Fri, 12 Oct 2007 09:28:01 -0700
Subject: Melhor Site de Downloads [ BIG SITE AND LINKS FASTED]
Message-ID: <1192206481.294443.137940@q3g2000prf.googlegroups.com>

www.forumgratiz.com.br
www.forumgratiz.com.br
www.forumgratiz.com.br
Download de :
Filmes
Games
XXX
Programas
Isso e muito ++ totalmente gratis


http://www.forumgratiz.com.br/forumb/index.php?act=reg
http://www.forumgratiz.com.br/forumb/index.php?act=reg
http://www.forumgratiz.com.br/forumb/index.php?act=reg
Somente Registrados Podem Ver os T?picos

Por Favor Votem Tamb?m http://www.topinho.com/index.php?a=in&u=jeanmartins
http://www.topinho.com/index.php?a=in&u=jeanmartins
http://www.topinho.com/index.php?a=in&u=jeanmartins
Pois o Site Sobrevive disso.
..



From khemkaamit at gmail.com  Tue Oct 16 06:46:58 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Tue, 16 Oct 2007 16:16:58 +0530
Subject: easy but difficult
In-Reply-To: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
References: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
Message-ID: <1360b7230710160346y4601047es90858291a0d9ebdb@mail.gmail.com>

On 10/16/07, Beema shafreen <beema.shafreen at gmail.com> wrote:
> hi everybody,
>   I have  a file  separated by hash:
> as shown below,
> file:
> A#1
> B#2
> A#2
> A#3
> B#3
>
> I need the result like this:
> A 1#2#3
> B 2#3
>
> how will generate the result like this from the above file
> can somebody tell me what i have to do......
> My code:
>           fh =open('abc_file','r')
>           for line in fh.readlines():
>                    data = line.strip().split('#')
>                     for data[0] in line
>                             print line
>
> I tried but i donot know how to create 1#2#3 in a single line
> regards
> shafreen

While looping over the file you may store alphabets as key in a
dictionary and numbers as values.

for example:

<code_untested>
d = {}
for line in open('abc_file'):
   data = line.strip().split('#')
   # add the numbers to the 'alphabet' key as a list
   d[data[0]] = d.get(data[0], []) + [data[1]]
<code_untested>

Now you can just iterate over the dictionary and write it into a file


Cheers,



-- 
--
Amit Khemka


From grante at visi.com  Tue Oct  2 22:18:25 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 03 Oct 2007 02:18:25 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
Message-ID: <13g5uvh698l9h1c@corp.supernews.com>

On 2007-10-02, Chris Mellon <arkanes at gmail.com> wrote:

> PyGtk has poor cross platform support, a very large footprint (the
> largest of all these libraries)

It's larger than wxWidgets on top of Gtk?

> as well as a complicated runtime environment. It's probably
> the closest to suitable for standard library inclusion, but it
> doesn't have the binary linking exemption that wxPython does
> (theres some question as to how needed that is for Python
> code, though) and it's got no compelling API advantage over
> Tk.

I like the fact that it doesn't include a whole extra scripting
language interpreter along with it the way tkinter sucks in Tcl.

-- 
Grant Edwards                   grante             Yow!  I'm encased in the
                                  at               lining of a pure pork
                               visi.com            sausage!!


From gagsl-py2 at yahoo.com.ar  Sun Oct 21 12:43:54 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 21 Oct 2007 13:43:54 -0300
Subject: Visibility of symbols between extension modules
References: <1192965710.4525.16.camel@sup3rkiddo.einstein>
Message-ID: <op.t0j3fgkix6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 21 Oct 2007 08:21:50 -0300, Sudharshan S <sudharsh at gmail.com>  
escribi?:

> I have been learning to write extension modules using the C API that
> python provides, and have hit a minor roadblock that is turning out to
> be major headache.
> My project essentially is organized as follows,
>
>                  foo
>                   |
>    ---------------------------------
>    |              |                |
>   bar            _foo             baz

What is foo? a directory? And bar/_foo/baz, source files in C? Each one  
defining a module object, or is there a single module - foo perhaps?

> _foo basically does some init stuff, nothing much. Thats where the
> problem starts. The "handler" variable which is initialized in _foo
> isn't visible to others. One solution that worked was calling the
> initializing function in each of the module's PyMODINIT_FUNC. Debugging
> through the interpreter I found out the it loads all the .so's and
> executes PyMODINIT_FUNCs. But by doing so, the routine to initialize the
> handle gets executed three times, something which i find to be sort of
> unclean.

Ah, ok, after rereading it I see you have three modules.

> The definition of the variable is included in a header and the sources
> of the other modules include this master header, So I do have that
> variable in scope, but its not initialized. _foo does the job of
> declaring that variable.

Is it a global C variable, or a module attribute? If you want it to be  
available to other Python code, it should be a module attribute. In this  
case, you retrieve the value using PyObject_GetAttrString as with any  
other object.
If it's a global C variable, once it's assigned it should be visible to  
all (but decades of warning against using global variables can't be  
wrong...)
The single most common error using the Python API is getting wrong the  
reference counts. If you lose a reference, your object may be garbage  
collected. If you leak a reference, it will never be freed. Maybe this is  
what happens here.

> I did my share of RTFM and found CObjects as a potential alternative.
> But I feel its use rather complicated for a single variable that goes
> out of scope. Is there any other way to solve this, or is my approach
> itself borked =(?, What am I missing?

Perhaps if you explain a bit more what you want to do someone can give  
some advice.

-- 
Gabriel Genellina



From aleax at mac.com  Sun Oct  7 16:05:35 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 13:05:35 -0700
Subject: Newbie packages Q
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
	<47091e82$0$15807$426a74cc@news.free.fr>
	<1191786525.264853.107630@k79g2000hse.googlegroups.com>
Message-ID: <1i5m6we.1wwjdby573v11N%aleax@mac.com>

MarkyMarc <marcsgbrevkonto at gmail.com> wrote:
   ...
> > > And sys.path is  /python/Test/bpack

sys.path must be a LIST.  Are you saying you set yours to NOT be a list,
but, e.g., a STRING?!  (It's hard to tell, as you show no quotes there).

> > The 'Test' package is *not* in your sys.path.
> 
> I can say yes to the first:
> The atest.py is in the right dir/package.
> And the third. If it is not good enough that this /python/Test/bpack
> is in the path.
> Then I can not understand the package thing.
> 
> I also tried to put /python/ and /python/Test in the sys.path same
> result.

If the only ITEM in the list that is sys.path is the string '/python',
then any Python code you execute will be able to import Test.apack (as
well as Test.bpack, or just Test).


Alex


From Frank.Aune at broadpark.no  Fri Oct 19 07:04:43 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Fri, 19 Oct 2007 13:04:43 +0200
Subject: python logging module and custom handler specified in config file
In-Reply-To: <1192728419.133020.133590@q5g2000prf.googlegroups.com>
References: <mailman.21.1192458649.13605.python-list@python.org>
	<1192728419.133020.133590@q5g2000prf.googlegroups.com>
Message-ID: <200710191304.43944.Frank.Aune@broadpark.no>

On Thursday 18 October 2007 19:26:59 Vinay Sajip wrote:
> The values in the config file are interpreted in the context of the
> logging module's namespace. Hence, one way of achieving what you want
> is putting any custom handlers in
> a module of your own, and providing a binding in the logging module's
> namespace. 

What if you want to datestamp filenames for filehandlers, say with todays date 
for example?

[handler_file]
class=FileHandler
level=NOTSET
formatter=normal
args=('filename.log', 'w')

Say you want filenames to be on format filename-YYYYMMDD.log 

Thanks,
Frank


From peterbe at gmail.com  Mon Oct 15 12:33:26 2007
From: peterbe at gmail.com (Peter Bengtsson)
Date: Mon, 15 Oct 2007 16:33:26 -0000
Subject: Normalize a polish L
Message-ID: <1192466006.735303.20470@i38g2000prf.googlegroups.com>

In UTF8, \u0141 is a capital L with a little dash through it as can be
seen in this image:
http://static.peterbe.com/lukasz.png

I tried this:
>>> import unicodedata
>>> unicodedata.normalize('NFKD', u'\u0141').encode('ascii','ignore')
''

I was hoping it would convert it it 'L' because that's what it
visually looks like. And I've seen it becoming a normal ascii L before
in other programs such as Thunderbird.

I also tried the other forms: 'NFC', 'NFKC', 'NFD', and 'NFKD' but
none of them helped.

What am I doing wrong?



From see.signature at no.spam  Tue Oct 16 05:42:57 2007
From: see.signature at no.spam (Eric Brunel)
Date: Tue, 16 Oct 2007 11:42:57 +0200
Subject: Python's coming... from unexpected angles.
References: <5njcjpFil587U1@mid.uni-berlin.de> <87fy0b4e0e.fsf@benfinney.id.au>
Message-ID: <op.t0aalvq4wepdt4@ericb.pragmadev>

On Tue, 16 Oct 2007 11:14:57 +0200, Ben Finney  
<bignose+hates-spam at benfinney.id.au> wrote:

> "Diez B. Roggisch" <deets at nospam.web.de> writes:
>
>> Just found this:
>
> The direct link to the article is
> <URL:http://www.boingboing.net/2007/10/16/french-lady-finds-py.html>.
>
>> I do believe that Python should be somewhat more upfront to brandish
>> it's merits - but then, sneaky ways are ok with me to...
>
> Well, it seems like she's an early adopter: she's eager to use PyPy
> all the time (though she has aliased it to 'pipi').

Well, I'd definetely vote for a name change for PyPy, as in french, it's  
pronounced "pee-pee", and yes, it means what you think it means... ;-)
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From mensanator at aol.com  Tue Oct 23 18:10:16 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 23 Oct 2007 15:10:16 -0700
Subject: Anagrams
In-Reply-To: <1193173950.629761.182090@t8g2000prg.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
	<1193173950.629761.182090@t8g2000prg.googlegroups.com>
Message-ID: <1193177416.305472.240010@q3g2000prf.googlegroups.com>

On Oct 23, 4:12 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> On Oct 23, 3:21 am, cokofree... at gmail.com wrote:
>
>
>
>
>
> > This was from a random website I found on practising good programming
> > techniques and I thought I'd see what ways people could find to write
> > out this example. Below are my two examples (which should work...).
>
> > I am merely interested in other techniques people have (without
> > resorting to overusage of C modules and such like), just python and
> > good computer science techniques.
>
> > For the wordlist go to this link <a href="http://codekata.pragprog.com/
> > 2007/01/kata_six_anagra.html">Kata Anagrams</a>
> > Anyway here are my two examples.
>
> > This one uses a dictionary to store prime values of each letter in the
> > alphabet and for each line multiple the results of the characters
> > (which is unique for each anagram) and add them to a dictionary for
> > printing latter.
> > <pre>
> > def anagram_finder():
> >     primeAlpha = {'a':2, 'b':3, 'c':5, 'd':7,'e' : 11, 'f':13, 'g':17,
> > 'h':19,        \
> >                   'i':23, 'j':29, 'k':31, 'l':37, 'm':41, 'n':43, 'o':
> > 47, 'p':53,    \
> >                   'q':59, 'r':61, 's':67, 't':71, 'u':73, 'v':79, 'w':
> > 83, 'x':89,    \
> >                   'y':97, 'z':101}
> >     dictAna =  {}
> >     file = open ("wordlist.txt", "r")
> >     for line in file:
> >         value = 1
> >         for s in line:
> >             if s.lower() in primeAlpha:
> >                    value *= primeAlpha[s.lower()]
> >         dictAna.setdefault(value, []).append(line.strip())
> >     file.close()
> >     print "\n".join(['Anagrams are: %s' % (v) for k, v in
> > dictAna.items() if len(dictAna[k]) > 1])
> > </pre>
>
> > My second is a little bit simpler. Each dictionary key is an
> > alphabetical ordering of the line in question, so that anagrams will
> > appear the same. It will add to the dictionary the new word either in
> > an existing key, or create a new one for it.
>
> > <pre>
> > def anagram_finder():
> >     dict = {}
> >     file = ('wordlist.txt', 'r')
> >     for line in file:
> >                 strip_line = line.strip().lower()
> >                 sort_line = str(sorted(strip_line))
> >                 dict.setdefault(sort_line, []).append(strip_line)
> >     file.close()
> >     print '\n'.join(['Anagrams are: %s' % (v) for k, v in dict.items()
> > if len(dict[k]) > 1])
> > </pre>
>
> > Comparing them with timeit, they both took around 1 second or so, with
> > the first being slightly faster.
>
> > What other ways do people think will work (and do mine actually work
> > for other people!)
>
> ##  I took a somewhat different approach. Instead of in a file,
> ##  I've got my word list (562456 words) in an MS-Access database.
> ##  And instead of calculating the signature on the fly, I did it
> ##  once and added the signature as a second field:
> ##
> ##  TABLE CONS_alpha_only_signature_unique
> ##  --------------------------------------
> ##  CONS       text      75
> ##  signature  text      26
> ##
> ##  The signature is a 26 character string where each character is
> ##  the count of occurences of the matching letter. Luckily, in
> ##  only a single case was there more than 9 occurences of any
> ##  given letter, which turned not to be a word but a series of
> ##  words concatenated so I just deleted it from the database
> ##  (lots of crap in the original word list I used).
> ##
> ##  Example:
> ##
> ##  CONS     signature
> ##  aah      20000001000000000000000000 # 'a' occurs twice & 'h' once
> ##  aahed    20011001000000000000000000
> ##  aahing   20000011100001000000000000
> ##  aahs     20000001000000000010000000
> ##  aaii     20000000200000000000000000
> ##  aaker    20001000001000000100000000
> ##  aal      20000000000100000000000000
> ##  aalborg  21000010000100100100000000
> ##  aalesund
> 20011000000101000010100000
> ##
> ##  Any words with identical signatures must be anagrams.
> ##
> ##  Once this was been set up, I wrote a whole bunch of queries
> ##  to use this table. I use the normal Access drag and drop
> ##  design, but the SQL can be extracted from each, so I can
> ##  simply open the query from Python or I can grab the SQL
> ##  and build it inside the program. The query
> ##
> ##    signatures_anagrams_select_signature
> ##
> ##  is hard coded for criteria 9 & 10 and should be cast inside
> ##  Python so the criteria can be changed dynamically.
> ##
> ##
> ##  QUERY signatures_anagrams_longest
> ##  ---------------------------------
> ##  SELECT   Len([CONS]) AS Expr1,
> ##           Count(Cons_alpha_only_signature_unique.CONS) AS
> CountOfCONS,
> ##           Cons_alpha_only_signature_unique.signature
> ##  FROM     Cons_alpha_only_signature_unique
> ##  GROUP BY Len([CONS]),
> ##           Cons_alpha_only_signature_unique.signature
> ##  HAVING   (((Count(Cons_alpha_only_signature_unique.CONS))>1))
> ##  ORDER BY Len([CONS]) DESC ,
> ##           Count(Cons_alpha_only_signature_unique.CONS) DESC;
> ##
> ##  This is why I don't use SQLite3, must have crosstab queries.
> ##
> ##  QUERY signatures_anagram_summary
> ##  --------------------------------
> ##  TRANSFORM Count(signatures_anagrams_longest.signature) AS
> CountOfsignature
> ##  SELECT    signatures_anagrams_longest.Expr1 AS [length of word]
> ##  FROM      signatures_anagrams_longest
> ##  GROUP BY  signatures_anagrams_longest.Expr1
> ##  PIVOT     signatures_anagrams_longest.CountOfCONS;
> ##
> ##
> ##  QUERY signatures_anagrams_select_signature
> ##  ------------------------------------------
> ##  SELECT   Len([CONS]) AS Expr1,
> ##           Count(Cons_alpha_only_signature_unique.CONS) AS
> CountOfCONS,
> ##           Cons_alpha_only_signature_unique.signature
> ##  FROM     Cons_alpha_only_signature_unique
> ##  GROUP BY Len([CONS]),
> ##           Cons_alpha_only_signature_unique.signature
> ##  HAVING   (((Len([CONS]))=9) AND
> ##            ((Count(Cons_alpha_only_signature_unique.CONS))=10))
> ##  ORDER BY Len([CONS]) DESC ,
> ##           Count(Cons_alpha_only_signature_unique.CONS) DESC;
> ##
> ##  QUERY signatures_lookup_by_anagram_select_signature
> ##  ---------------------------------------------------
> ##  SELECT     signatures_anagrams_select_signature.Expr1,
> ##             signatures_anagrams_select_signature.CountOfCONS,
> ##             Cons_alpha_only_signature_unique.CONS,
> ##             Cons_alpha_only_signature_unique.signature
> ##  FROM       signatures_anagrams_select_signature
> ##  INNER JOIN Cons_alpha_only_signature_unique
> ##  ON         signatures_anagrams_select_signature.signature
> ##             = Cons_alpha_only_signature_unique.signature;
> ##
> ##
> ##  Now it's a simple matter to use the ODBC from Win32 to extract
> ##  the query output into Python.
>
> import dbi
> import odbc
>
> con = odbc.odbc("words")
> cursor = con.cursor()
>
> ##  This first section grabs the anagram summary. Note that
> ##  queries act just like tables (as long as they don't have
> ##  internal dependencies). I read somewhere you can get the
> ##  field names, but here I put them in by hand.
>
> ##cursor.execute("SELECT * FROM signature_anagram_summary")
> ##
> ##results = cursor.fetchall()
> ##
> ##for i in results:
> ##  for j in i:
> ##    print '%4s' % (str(j)),
> ##  print
>
> ##  (if this wraps, each line is 116 characters)

Sorry, s/b 96 characters, I was looking at the line number.
Anyway, each line starts with a double hash, so it's easy
to fix.

> ##        2    3    4    5    6    7    8    9   10   11   12   13
> 14   15   16   17   18   23
> ##   2  259 None None None None None None None None None None None
> None None None None None None
> ##   3  487  348  218  150  102 None None None None None None None
> None None None None None None
> ##   4 1343  718  398  236  142  101   51   26   25    9    8    3
> 2 None None None None None
> ##   5 3182 1424  777  419  274  163  106   83   53   23   20   10
> 6    4    5    1    3    1
> ##   6 5887 2314 1051  545  302  170  114   54   43   21   15    6
> 5    4    4    2 None None
> ##   7 7321 2251  886  390  151   76   49   37   14    7    5    1
> 1    1 None None None None
> ##   8 6993 1505  452  166   47   23    8    6    4    2    2 None
> None None None None None None
> ##   9 5127  830  197   47   17    6 None None    1 None None None
> None None None None None None
> ##  10 2975  328   66    8    2 None None None None None None None
> None None None None None None
> ##  11 1579  100    5    4    2 None None None None None None None
> None None None None None None
> ##  12  781   39    2    1 None None None None None None None None
> None None None None None None
> ##  13  326   11    2 None None None None None None None None None
> None None None None None None
> ##  14  166    2 None None None None None None None None None None
> None None None None None None
> ##  15   91 None    1 None None None None None None None None None
> None None None None None None
> ##  16   60 None None None None None None None None None None None
> None None None None None None
> ##  17   35 None None None None None None None None None None None
> None None None None None None
> ##  18   24 None None None None None None None None None None None
> None None None None None None
> ##  19   11 None None None None None None None None None None None
> None None None None None None
> ##  20    6 None None None None None None None None None None None
> None None None None None None
> ##  21    6 None None None None None None None None None None None
> None None None None None None
> ##  22    4 None None None None None None None None None None None
> None None None None None None
>
> ##  From the query we have the word size as row header and size of
> ##  anagram set as column header. The data value is the count of
> ##  how many different anagram sets match the row/column header.
> ##
> ##  For example, there are 7321 different 7-letter signatures that
> ##  have 2 anagram sets. There is 1 5-letter signature having a
> ##  23 member anagram set.
> ##
> ##  We can then pick any of these, say the single 10 member anagram
> ##  set of 9-letter words, and query out out the anagrams:
>
> cursor.execute("SELECT * FROM
> signatures_lookup_by_anagram_select_signature")
> results = cursor.fetchall()
> for i in results:
>   for j in i:
>     print j,
>   print
>
> ##  9 10 anoretics 10101000100001100111000000
> ##  9 10 atroscine 10101000100001100111000000
> ##  9 10 certosina 10101000100001100111000000
> ##  9 10 creations 10101000100001100111000000
> ##  9 10 narcotise 10101000100001100111000000
> ##  9 10 ostracine
>
> read more ?- Hide quoted text -
>
> - Show quoted text -...




From f.braennstroem at gmx.de  Sat Oct 20 07:52:52 2007
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Sat, 20 Oct 2007 11:52:52 +0000
Subject: open remote terminal
References: <ff5olg$oll$2@ger.gmane.org> <ff7tk0$3dj$1@ger.gmane.org>
	<ffce3b$eto$1@ger.gmane.org>
Message-ID: <ffcj1t$rum$1@ger.gmane.org>

Fabian Braennstroem wrote:

> Hi Steve,
> 
> Steve Holden wrote:
> 
>> Fabian Braennstroem wrote:
>>> Hi,
>>> 
>>> I would like to use python to start an terminal, e.g. xterm, and login
>>> on a remote machine using rsh or ssh. This could be done using 'xterm -e
>>> ssh machine', but after the login I would like to jump to a given
>>> directory. Does anyone have an idea how to do this with python?
>>> 
>>> Regards!
>>> Fabian
>>> 
>> pexpect would be the usual solution, I believe, if you could get it to
>> interact correctly with your virtual terminal.
>> 
>>    http://pexpect.sourceforge.net/

I actually gave it a first very simple try:

import pexpect
child=pexpect.spawn('xterm')
child.sendline('ls')

Unfortunately nothing happens expect the start of xterm!? Does anyone have
an idea, what I am doing wrong?
Fabian



From patrick.waldo at gmail.com  Mon Oct 22 12:57:39 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Mon, 22 Oct 2007 16:57:39 -0000
Subject: Problem Converting Word to UTF8 Text File
In-Reply-To: <mailman.301.1193024350.13605.python-list@python.org>
References: <1192984543.240902.3790@t8g2000prg.googlegroups.com>
	<mailman.282.1192986128.13605.python-list@python.org>
	<1192991577.355854.264410@v29g2000prd.googlegroups.com>
	<mailman.301.1193024350.13605.python-list@python.org>
Message-ID: <1193072259.710700.207320@q5g2000prf.googlegroups.com>

That KB document was really helpful, but the problem still isn't
solved.  What's wierd now is that the unicode characters like  
become  ? in some odd conversion.  However, I noticed when I try to
open the word documents after I run the first for statement that Word
gives me a window that says File Conversion and asks me how i want to
encode it.  None of the unicode options retain the characters.  Then I
looked some more and found it has a central european option both ISO
and Windows which works perfectly since the documents I am looking at
are in Czech.  Then I try to save the document in word and it says if
I try to save it as a text file I will lose the formating!  So I guess
I'm back at the start.

Judging from some internet searches, I'm not the only one having this
problem.  For some reason Word can only save as .doc even though .txt
can support the utf8 format with all these characters.

Any ideas?



On Oct 22, 5:39 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Sun, 21 Oct 2007 15:32:57 -0300, <patrick.wa... at gmail.com> escribi?:
>
> > However, I still cannot read the unicode from the Word file.  If take
> > out the first for-statement, I get a bunch of garbled text, which
> > isn't helpful.  I would save them all manually, but I want to figure
> > out how to do it in Python, since I'm just beginning.
>
> > My intuition says the problem is with
>
> > FileFormat=win32com.client.constants.wdFormatText
>
> > because it converts fine to a text file, just not a utf-8 text file.
> > How can I  modify this or is there another way to code this type of
> > file conversion from *.doc to *.txt with unicode characters?
>
> Ah! I thought you were getting the right file format.
> I can't test it now, but this KB documenthttp://support.microsoft.com/kb/209186/en-us
> suggests you should use wdFormatUnicodeText when saving the document.
> What the MS docs call "unicode" when dealing with files, is in general
> utf16.
> In this case, if you want to convert to utf8, the sequence would be:
>
>     f = open(original_filename, "rb")
>     udata = f.read().decode("utf16")
>     f.close()
>     f = open(new_filename, "wb")
>     f.write(udata.encode("utf8"))
>     f.close()
>
> --
> Gabriel Genellina




From paul.hankin at gmail.com  Thu Oct 11 04:12:32 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 11 Oct 2007 08:12:32 -0000
Subject: for loop question
In-Reply-To: <13gr6p3apqjik3c@corp.supernews.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
	<1192047900.124690.284890@19g2000hsx.googlegroups.com>
	<13gr6p3apqjik3c@corp.supernews.com>
Message-ID: <1192090352.659722.231270@v3g2000hsg.googlegroups.com>

On Oct 11, 4:40 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Wed, 10 Oct 2007 20:25:00 +0000, Paul Hankin wrote:
> >> A "works-for-me":
>
> >>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
> >>  >>> for a,b in pairs:
> >>  ...     print a,b
>
> > for a, b in zip(test, test[1:]):
> >   print a, b
>
> May be unfortunately slow if test is half a gigabyte of data, what with
> essentially making three copies of it. Lazy procedures like the generator
> expression above are often much better.
>
> Just for completion, here's another way:
>
> prev = test[0]
> for i in xrange(1, len(test)):
>     print prev, test[i]
>     prev = test[i]

Why not just:

for i in xrange(len(test) - 1):
    print test[i], test[i + 1]

--
Paul Hankin



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct  5 03:28:09 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 05 Oct 2007 09:28:09 +0200
Subject: Mysql class works like php
In-Reply-To: <mailman.1548.1191539444.2658.python-list@python.org>
References: <mailman.1548.1191539444.2658.python-list@python.org>
Message-ID: <4705e772$0$19642$426a74cc@news.free.fr>

Andrey a ?crit :
> Hi
> 
> just a quick question about using MySQL module... are there any api / class 
> available to give a higher level in working with Mysql in python?
> such as
> db.fetch_array(),
> db.fetch_rows(),
> db.query(),
> for eachrow in db.fetch_array():
>     xxxx

You really find this "higher level" than Python's db-api ???

> just as easy as PHP?

D'oh :(


// PHP:
// suppose we have a valid $connection
$q = mysql_query("select * from yaddayadda", $connection)
if (is_resource($q)) {
   while($row = mysql_fetc_row($q)) {
     do_something_with($row);
   }
   mysql_free($q);
}
else {
   // handle the error here
}

# python:
# suppose we have a valid connection
cursor = connection.cursor() # can specify the kind of cursor here
try:
   cursor.execute("select * from yaddayadda")
except MysqlError, e:
   # handle error here
else:
   for row in cursor:
     do_something_with(row)

# not strictly necessary, you can reuse the same
# cursor for another query
cursor.close()


As far as I'm concerned, I fail to see how PHP is "higher level" or 
"easier" here.




From gagsl-py2 at yahoo.com.ar  Sun Oct 28 23:52:30 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 00:52:30 -0300
Subject: caluclating median distance
References: <aa405c1f0710280713y30cffbbcvf7c4805028ceab40@mail.gmail.com>
Message-ID: <op.t0xw1ss5x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 28 Oct 2007 11:13:39 -0300, Beema shafreen  
<beema.shafreen at gmail.com> escribi?:

> 10000175    10000234    43    A_16_P03652190
> 10000277    10000336    387    A_16_P41582022
> 10000723    10000782    98    A_16_P03652191
>
> how to calculate the median spacing of an data in the file basically
> focusing on the third column of an file. say for example the median  
> spacing
> is to be 635. how do we programtically calculate the median spacing and  
> sort
> the file according to the third column's median spacing.
> hope median we calculate  using (N+1)/2

I don't understand exactly what you want. To compute the median, the  
easiest and obvious way is to sort the data first and choose the middle  
element. For large sets, there are more efficient ways; see this recipe in  
the Python Cookbook:  
<http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/269554>

-- 
Gabriel Genellina



From ggpolo at gmail.com  Wed Oct 10 06:15:25 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Wed, 10 Oct 2007 07:15:25 -0300
Subject: struct.unpack less than 1 byte
In-Reply-To: <1192010223.490715.205380@57g2000hsv.googlegroups.com>
References: <1192010223.490715.205380@57g2000hsv.googlegroups.com>
Message-ID: <ac2200130710100315o731a6df1ve6bc845b691ea0a5@mail.gmail.com>

2007/10/10, cprogrammer <cprogrammer at gmail.com>:
> hello all,
>
> i need to read from a file a struct like this [1byte, 12bits, 12bits]
> reading 1 byte or more is not a problem ... but the 12 bits values
> are ...
>
> thanks
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

12bits, 12bits == 3 byes

-- 
-- Guilherme H. Polo Goncalves


From nick.bastin at gmail.com  Sun Oct  7 20:43:40 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Sun, 7 Oct 2007 20:43:40 -0400
Subject: Problem using subprocess.Popen on windows
In-Reply-To: <bda7ac6d0710070307o96209a1r9b41690355440028@mail.gmail.com>
References: <bda7ac6d0710070307o96209a1r9b41690355440028@mail.gmail.com>
Message-ID: <66d0a6e10710071743m20b5dca8t8678c8ed22406c6a@mail.gmail.com>

On 10/7/07, jorma kala <jjkk73 at gmail.com> wrote:
>  from subprocess import *
>
>  p1 = Popen(["dir"],  stdout=PIPE)
>  output = p1.communicate()[0]
>
>
>  But I get a WindowsError : [Error 2]  File Not Found

Tim answered your actual question, but why are you doing this in the
first place?  The Python standard library provides all the
functionality that dir will provide and you don't have to parse the
output...

Look into <http://www.python.org/doc/lib/os-file-dir.html>, and
specifically, os.listdir(path).

--
Nick


From f.guerrieri at gmail.com  Tue Oct 16 06:42:10 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Tue, 16 Oct 2007 12:42:10 +0200
Subject: easy but difficult
In-Reply-To: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
References: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
Message-ID: <79b79e730710160342m519b33c5t19b5277495386536@mail.gmail.com>

On 10/16/07, Beema shafreen <beema.shafreen at gmail.com> wrote:
> hi everybody,
>   I have  a file  separated by hash:
> as shown below,
> file:
> A#1
> B#2
> A#2
> A#3
> B#3
>
> I need the result like this:
> A 1#2#3
> B 2#3
>
> how will generate the result like this from the above file
> can somebody tell me what i have to do......
> My code:
>           fh =open('abc_file','r')
>           for line in fh.readlines():
>                    data = line.strip().split('#')
>                     for data[0] in line
>                             print line
>
> I tried but i donot know how to create 1#2#3 in a single line
> regards


This certainly seems to be a homework assignment :)
You could try if dictionaries or their variants.
There is an example very similar example to the task you are trying to
solve in the documentation available online on the site
docs.python.org

francesco


From fw3 at hotmail.co.jp  Thu Oct 25 12:56:09 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Thu, 25 Oct 2007 16:56:09 +0000
Subject: Need to help to parse the matlab log file.
In-Reply-To: <4720c5c3$0$20084$426a74cc@news.free.fr>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
	<4720c5c3$0$20084$426a74cc@news.free.fr>
Message-ID: <BLU107-W43E5C6CE43D2A1C413FAC6B4950@phx.gbl>


I have a big log file generated by matlab. Here is a copy of part of it. I want to write a function to parse some results. For example, if I want to get the results of BandWidth and freq_offset_in_KHz, the function will print all lines with contain them as : 
 
BandWidth = 10
freq_offset_in_KHz=50
 
I have submited a similar question to this forum and have not got any answer. May be my first one is too simple. So I decided to send part of the log file. I could not attach the whole file since it is big and restricted by company. This is not a student homework.
 
Thanks
 
Frank
 
Matlab log:
 
ans =
 
24-Oct-2007 09:53:11
 
 
BandWidth =
 
    10
 
 
freq_offset_in_KHz =
 
    50
 
 
maxPreambMissCount =
 
     1
 
 
maxlIterations =
 
   300
 
 
testCasesToBeRun =
 
    11
 
Bandwidth 10.000000 
Using config file: config_1024_V1_Acq_2
 
case_snr =
 
    -1
 
 
case_backoff =
 
    20
 
 
case_refPid =
 
     1
 
 
case_refRuns =
 
   300
 
 
case_refTOmin =
 
  -12.9196
 
 
case_refTOmax =
 
   20.8386
 
 
case_refTOmean =
 
    3.8924
 
 
case_refTOstd =
 
    3.6888
 
 
case_refFOEmin =
 
   -0.4730
 
 
case_refFOEmax =
 
    0.3788
 
 
case_refFOEmean =
 
  6.3300e-004
 
 
case_refFOEstd =
 
    0.148
 
 
_________________________________________________________________
?????????????????IE7?MSN???????????????
http://promotion.msn.co.jp/ie7/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/4d09d427/attachment.html>

From kaaveland at gmail.com  Wed Oct 10 14:30:12 2007
From: kaaveland at gmail.com (=?iso-8859-1?q?Robin_K=E5veland?=)
Date: Wed, 10 Oct 2007 18:30:12 -0000
Subject: Plugins / Modularity
Message-ID: <1192041012.099313.282600@d55g2000hsg.googlegroups.com>

Hi there. I'm basically in the process of writing my first substantial
application in Python, and I've made a couple of (I'd like to say)
design decisions so it won't just be a jumble. So, I've divided my
program into three sub-packages, core, plugins and utilities.

The core will be needed for the program to be run, but I've put it in
a package by itself to make things more tidy.
The utilities will be things that are handy to have (I'm thinking
packages written by others that will make my work easier), but aren't
necessary for the program to run. I'm not sure if this is needed yet,
but I want to have the option in case it turns out to be useful.

The plugins will basically be a package with modules adding
functionality to the program, so to make it more extensible, and let
others have a very simple way of extending the functionality without
having to read a lot of source code and documentation. Adding a plugin
should be really simple, preferrably you shouldn't have to modify any
existing source, just put a .py file into the directory. This is where
I'm sort of stuck. Does anyone know a way I can achieve this?

This poses a couple of challenges for me, given the structure of my
project and that I have no clue about how to do it. I'm thinking here
that every plugin will have a main callable, which will recieve a
Request object which can be queried for information, and an Action
object which can be used to affect the state of the program to some
degree. These will ideally be very simple (And for the moment, they
obviously are).

What I want, is a moment to 'contact' every module in the plugins
package, and send these two objects to it's main callable. I also want
to add a way for the program to load and reload plugin modules on the
fly, so I can modify them without having to shut it down.

Does anyone have some links for me? Alternatively any ideas?

Thanks in advance.



From robin at NOSPAMreportlab.com  Sat Oct 20 10:31:14 2007
From: robin at NOSPAMreportlab.com (Robin Becker)
Date: Sat, 20 Oct 2007 15:31:14 +0100
Subject: vote for Python - PLEASE
In-Reply-To: <mailman.193.1192751640.13605.python-list@python.org>
References: <mailman.193.1192751640.13605.python-list@python.org>
Message-ID: <471A1132.8040604@jessikat.plus.net>

Monty Taylor wrote:
> Hey everybody,
> 
> MySQL has put up a poll on http://dev.mysql.com asking what your primary 
> programming language is. Even if you don't use MySQL - please go stick 
> in a vote for Python. I'm constantly telling folks that Python needs 
> more love, but PHP and Java are kicking our butts...
> 
> (I know the world would be a better place if the poll were honest, but 
> I'd rather that people got the message that they should do more python 
> development work!)
> 
> Thanks!
> Monty
well I did vote as we use python+mysql; I dispute the value of "kicking 
our butts" though. When I voted python was running at 39.8% about equal 
to java+php (41.4%).
-- 
Robin Becker


From adam at atlas.st  Thu Oct 18 10:47:40 2007
From: adam at atlas.st (Adam Atlas)
Date: Thu, 18 Oct 2007 07:47:40 -0700
Subject: Convert string to command..
In-Reply-To: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
Message-ID: <1192718860.391481.139090@v29g2000prd.googlegroups.com>

On Oct 18, 10:23 am, Abandoned <best... at gmail.com> wrote:
> I want to convert a string to command..
> For example i have a string:
> a="['1']"
> I want to do this list..
> How can i do ?

Use the builtin function "eval".



From python at hope.cz  Mon Oct  1 03:42:06 2007
From: python at hope.cz (Johny)
Date: Mon, 01 Oct 2007 00:42:06 -0700
Subject: Python and SSL
In-Reply-To: <6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
Message-ID: <1191224526.856466.305980@57g2000hsv.googlegroups.com>

On Sep 28, 11:13 pm, Heikki Toivonen <hei... at osafoundation.org> wrote:
> Johny wrote:
> > I need to use Python with SSL comunication betweeen servers.
> > (I use hhtplib but I think urllib2 can also be used )
> >  I think I need to use SSL root certificate and tell  a program to
> > trust this certificate.
>
> You can't do secure SSL with the builtin SSL support, you need to use a
> third party module. There are a few available, including M2Crypto, TLS
> Lite, pyOpenSSL and pyOpenSSL-extended. Since I am the maintainer

Thank you all for help
I probably put my question in  a wrong way.
So again:
For the purpose of the  application debugging I would like to know
how  to add a new
certification authority to Python( so that  my Python program will
accept that certificate).
By using my Python program I am  attempting to trust a certificate
signed by a certification authority that Python doesn't trust and that
causes the error.
Thanks for help.
L.




From byte8bits at gmail.com  Tue Oct  2 11:00:14 2007
From: byte8bits at gmail.com (brad)
Date: Tue, 02 Oct 2007 11:00:14 -0400
Subject: Dictionary invalid token error
In-Reply-To: <mailman.1397.1191337063.2658.python-list@python.org>
References: <fdtlqo$t1t$1@solaris.cc.vt.edu>
	<mailman.1397.1191337063.2658.python-list@python.org>
Message-ID: <fdtme0$1g$1@solaris.cc.vt.edu>

Tim Chase wrote:
> Numbers with leading zeros are parsed as octal.  8 and 9 are invalid 
> digits in octal.  Thus, it falls over.  00 through 07 will work fine, 
> but 08 and 09 will go kaput.
> 
> http://docs.python.org/ref/integers.html
> 
> -tkc

Thanks... that makes sense. I'll store them as strings.


From bj_666 at gmx.net  Sat Oct 27 01:52:04 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 27 Oct 2007 05:52:04 GMT
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<mailman.492.1193441400.13605.python-list@python.org>
Message-ID: <5og204Fmh2htU2@mid.uni-berlin.de>

On Fri, 26 Oct 2007 19:29:47 -0400, J. Cliff Dyer wrote:

> Ben Finney wrote:
>> So, the original poster might get further by proposing an '0dNNN.NNN'
>> syntax for 'decimal.Decimal' literals. 
> It would rather be remarkably inconsistent and confusing. 
> 
> Python 3.0a1 (py3k:57844, Aug 31 2007, 16:54:27) [MSC v.1310 32 bit
> (Intel)] on win32
> <snip>
>>>> type(0b1)
> <type 'int'>
>>>> type(0o1)
> <type 'int'>
>>>> type(0x1)
> <type 'int'>
>>>> assert 0b1 is 0x1
>>>>

That this doesn't raise `AssertionError` is an implementation detail. 
It's not guaranteed the two objects are really the same.

Ciao,
	Marc 'BlackJack' Rintsch


From bj_666 at gmx.net  Wed Oct 17 11:31:54 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 17 Oct 2007 15:31:54 GMT
Subject: Order by value in dictionary
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de> <5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
	<5nmk3kFiv0krU2@mid.uni-berlin.de>
	<1192633790.090464.306800@t8g2000prg.googlegroups.com>
Message-ID: <5nmo79Fiva37U4@mid.uni-berlin.de>

On Wed, 17 Oct 2007 08:09:50 -0700, Abandoned wrote:

> Very very thanks everbody..
> 
> These are some method..
> Now the fastest method is second..

Maybe because the second seems to be the only one that's not processing
the whole dictionary but just 500 items less!?

You are building way too much intermediate lists in your functions.

> ==== 1 ===
> def sortt(d):
>     items=d.items()

Builds a list of all items.

>     backitems=[ [v[1],v[0]] for v in items]

Builds another list from all items.

>     backitems.sort()
>     a=[ backitems[i][1] for i in range(0,len(backitems))]

And again a new list *plus* a list of len(backitems) integers that is
built just to iterate over it.  Instead of iterating directly over
`backitems` without the index.

>     a.reverse()
>     return a

This whole function can be written as (untested):

def sortt(d):
    sorted_items = sorted((item[1], item[0]) for item in d.iteritems(),
                          reverse=True)
    return map(operator.itemgetter(1), sorted_items)

> ==== 2 =====
> import operator
> def sortt(d):
>     backitems=d.items()
>     boyut=len(backitems)
>     backitems=backitems[boyut-500:]
>     backitems=sorted(backitems, key=operator.itemgetter(1))
>     a=[ backitems[i][0] for i in range(0,len(backitems))]
>     a.reverse()
>     return a

Without throwing away 500 items:

def sortt(d):
    sorted_items = sorted(d.iteritems(),
                          key=operator.itemgetter(1),
                          reverse=True)
    return map(operator.itemgetter(0), sorted_items)

Ciao,
	Marc 'BlackJack' Rintsch


From amdescombes at gmail.com  Sat Oct 13 07:02:11 2007
From: amdescombes at gmail.com (AMD)
Date: Sat, 13 Oct 2007 13:02:11 +0200
Subject: Memory Problems in Windows 2003 Server
In-Reply-To: <feo0f7$jd1$2@solaris.cc.vt.edu>
References: <470f7857$0$27795$426a74cc@news.free.fr>
	<feo0f7$jd1$2@solaris.cc.vt.edu>
Message-ID: <4710a5ad$0$26731$426a74cc@news.free.fr>

Hi Brad,

I do the reading one line at a time, the problem seems to be with the 
dictionary I am creating.

Andre

> amdescombes wrote:
>> Hi,
>>
>> I am using Python 2.5.1
>> I have an application that reads a file and generates a key in a 
>> dictionary for each line it reads. I have managed to read a 1GB file 
>> and generate more than 8 million keys on an Windows XP machine with 
>> only 1GB of memory and all works as expected. When I use the same 
>> program on a Windows 2003 Server with 2GB of RAM I start getting 
>> MemoryError exceptions!
>> I have tried setting the IMAGE_FILE_LARGE_ADDRESS_AWARE on both 
>> Python.exe and Python25.dll and setting the /3GB flag on the boot.ini 
>> file to no avail. I still get the MemoryError exceptions.
>>
>> Has anybody encountered this problem before?
>>
>> Thanks in advance for any ideas/suggestions.
>>
>> Best Regards,
>>
>> Andr? M. Descombes
> 
> I forgot to mention that the OS itself or other processes may be using a 
> lot of memory. So, just because you have 2GB, that does not mean you can 
> access all of that at once. I would guess that 25% of memory is in 
> constant use by the OS. So, do your IO/reads in smaller chunks similar 
> to the example I gave earlier.
> 
> Brad


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 22:23:37 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 04:23:37 +0200
Subject: migrating to packages
In-Reply-To: <mailman.1581.1191591456.2658.python-list@python.org>
References: <4703C661.50009@fmed.uba.ar>	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>	<mailman.1488.1191461205.2658.python-list@python.org>	<47045b29$0$11005$4c368faf@roadrunner.com>	<mailman.1530.1191526997.2658.python-list@python.org>	<47060d9a$0$30531$426a74cc@news.free.fr>
	<mailman.1581.1191591456.2658.python-list@python.org>
Message-ID: <4706a0f5$0$31740$426a74cc@news.free.fr>

Gerardo Herzig a ?crit :
> Bruno Desthuilliers wrote:
> 
>> Gerardo Herzig a ?crit :
>>  
>>
>>> Carl Bank a ?crit :
>>>   
>>>
>>>> Add these lines in __init__.py:
>>>>
>>>> from MYCLASSES.A import A
>>>> from MYCLASSES.B import B
>>>>
>>>>
>>>>     
>>>
>>> Ummm, that works indeed, but forces me to import all (more than A and 
>>> B) classes, rigth?
>>>   
>>
>>
>> Why so ?
>>
>>  
>>
> If the original MYCLASSES.py has 5 different classes ,say A,B,C,D,E , 
> each one has to be imported 

where ? In the __init__.py or in the client code ?

> (as A and B) in order to be used for the 
> client code.

 From the client code POV, it doesn't change anything.

> The thing is, there are more than 5 classes,

Here again : where ?

You know, it's pretty common in Python to have more than one single 
symbol publicly available from a given module, and you don't *have* to 
do the java one-class-per-file dance. The main reason for splitting an 
existing module into multiple submodules of a package is to keep 
module's size manageable. If each of your classes is so big it need a 
whole module, then you possibly have another problem...

> and looks like 
> a lot of unnecesary work to me, since a particular program can use 1,2, 
> or 3 classes at the time....

Then either it import the package and use fqn, or it only imports the 
needed classes.

> Thats why im watching the way to override 
> the `import statement'.......

IMHO, chances are you're going for the wrong solution.


From rcdailey at gmail.com  Fri Oct 19 18:37:29 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Fri, 19 Oct 2007 17:37:29 -0500
Subject: C++ version of the C Python API?
Message-ID: <496954360710191537r62ab6f28p3f61ca459fdc2116@mail.gmail.com>

Hi,

Is there a C++ version of the C Python API packaged with python 2.5?
It would be nice to have a OOP approach to embedding python in C++. It
would also be a bonus if this C++ Python API cleaned up a lot of the
messy code involved in embedding python.

Thanks.


From zaz600 at gmail.com  Thu Oct 25 08:18:42 2007
From: zaz600 at gmail.com (NoName)
Date: Thu, 25 Oct 2007 12:18:42 -0000
Subject: about functions question
In-Reply-To: <1193305621.987689.24060@o80g2000hse.googlegroups.com>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
Message-ID: <1193314722.985517.252220@d55g2000hsg.googlegroups.com>

sorry! Yes it's work.
What about 2 question?
Can i put function after main block?

print qq()

def qq():
  return 'hello'

Traceback (most recent call last):
  File "C:\Python25\projects\indexer\test.py", line 1, in <module>
    print qq()
NameError: name 'qq' is not defined


Or onli possible:

def main():
 print qq()

def qq():
  return 'hello'

main()



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 23 18:07:03 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 24 Oct 2007 00:07:03 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <nuydnd4YcMaWwYPanZ2dnUVZ_hGdnZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
	<mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
	<471e431f$0$21451$426a34cc@news.free.fr>
	<nuydnd4YcMaWwYPanZ2dnUVZ_hGdnZ2d@comcast.com>
Message-ID: <471e713f$0$5252$426a34cc@news.free.fr>

Steven Bethard a ?crit :
> Bruno Desthuilliers wrote:
> 
>>> I guess as long as your documentation is clear about which attributes 
>>> require computation and which don't...
>>
>>
>> Why should it ? FWIW, I mentionned that I would obviously not use 
>> properties for values requiring heavy, non cachable computation. This 
>> set aside, the fact that the attribute is computed (or not) is none of 
>> the concerns of client code. I think you know that concept, it's 
>> called 'encapsulation' !-)
> 
> 
> Encapsulation doesn't mean having no understanding of the object you're 
> using. 

Nope (or not exactly !-) but it means that interface should be decoupled 
from implemantation, and that, as a user, you shouldn't have have to 
worry that much about implementation details.

> We all use Python lists, knowing that adding to the end is 
> cheap, and adding to the front is expensive.  If you're using someone's 
> data type, but you have no idea where the performance costs are, you're 
> just asking for trouble.

Indeed. But
1/ this is true weither you use properties only for refactoring plain 
attributes or you use them righ from the start
2/ I'm sorry to have to repeat it, but I never advised using computed 
attributes for heavy computations.

>  That's true even if you're not prematurely 
> optimizing -- in the case of lists, doing the wrong sort of insert can 
> make an O(N) algorithm an O(N**2) algorithm. So I don't think this has 
> anything to do with encapsulation.

I can only agree on this. But is this really what we're talking about ? 
I thought you said - well, let me quote it, it will be simpler (nb: 
emphasis is yours):
"""
if you're creating a class for the first time, it should *never* use 
property()
"""

Now you're talking about not _abusing_ this feature - a point on which, 
FWIW, I wholefully agree from the start. Are you saying that using 
properties is an abuse in itself ?

If then, one should only use explicit accessors ? But then, what would 
prevent anyone to put heavy computations into accessors ?

And else - ie, if you think using computed attributes is legitimate for 
simple things - why not using them right from the start when it makes 
sens instead of having a strange mix of attribute syntax and explicit 
accessors syntax (for an implementation that may finally end up using 
properties under the hood and have explicit accessors just, well, 
accessing a plain attribute) ?

> This really only has to do with what you and I think are natural 
> programming intuitions. I agree that Python is not Java, or C, or 
> whatever, but there are a wide variety of precedents in a wide variety 
> of languages (the Python stdlib included) that lead many programmers to 
> expect only minimal computation to be performed when accessing 
> attributes.

Should I mention *once again* that I never advertized using properties 
for heavy computations ?-)

> I believe we simply disagree on whether or not Python 
> programmers need to be trained out of these expectations.

I believe we simply disagree on weither properties should be used when 
it makes sens (from a semantic POV, which doesn't prevent common sens, 
thanks) or if they should be restricted to refactoring-life-saver. Now 
since the second use implies that some attributes-looking properties of 
an object may not be what they looks like - and even worth, may suddenly 
become (a little bit) more costly without client code being warned - I 
don't see what's your problem with the first one.

Ok, I think we all understood your (quite sensible) concerns about not 
calling super-heavy-computations without knowing, but (did I say it ?) 
that's certainly not what I'm talking about, nor how anyone in it's own 
mind would use this feature. No, don't tell me, I know there are a 
couple ho-so-very-smart peoples out there that actually will. But what ? 
There's no cure for stupidity. So far, it seems that most Python users 
don't suffer from such major brain disorders - I'd even find them 
suprisingly reasonnable when it comes to black magic -, so I don't think 
there's a need for such a rule as the one you were suggesting.

Ho, and wrt/ training and expectations, I'm afraid you have to live with 
the fact that computed attributes (either properties and custom 
descriptors) are alreay widely used. FWIW, may I remind you that a 
method is actually a callable returned by a computed attribute ?-)


From Anthon.van.der.Neut at googlemail.com  Thu Oct 11 05:24:12 2007
From: Anthon.van.der.Neut at googlemail.com (Anthon)
Date: Thu, 11 Oct 2007 02:24:12 -0700
Subject: Python SVN down?
Message-ID: <1192094652.913626.171650@v3g2000hsg.googlegroups.com>

I am trying to get at the python source code, but it seems
svn.python.org is down, at least on port 80 (http) and 3690 (svn).
This happened earlier this week and then it came back (at least
yesterday).
Are all the real  ( ;-) ) developers using ssh+svn and not noticing
this?

Anthon



From stef.mientki at gmail.com  Tue Oct 16 17:45:07 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Tue, 16 Oct 2007 23:45:07 +0200
Subject: why doesn't have this list a "reply-to" ?
Message-ID: <471530E3.9090602@gmail.com>

hello,

I'm always have great difficulties, replying to this beautiful and 
helpful list.

When I hit the reply button,
the message is sent personally to the sender and not to the list.
I've subscribed to dozen's of lists,
and all have an "reply-to" address, that points to list and not to the 
individual.

cheers,
Stef Mientki


From wink at saville.com  Wed Oct 10 14:41:19 2007
From: wink at saville.com (wink)
Date: Wed, 10 Oct 2007 18:41:19 -0000
Subject: Pythonic way for handling file errors
Message-ID: <1192041679.657266.320210@o80g2000hse.googlegroups.com>

Hello,

I would like to know what would be considered the most
Pythonic way of handling errors when dealing with files,
solutions that seem reasonable using 2.5:

-------
try:
   f = open('afile', 'r')
   content = f.read()
   error = 200
except Exception:
   error = 404
finally:
   if locals().has_key('f'):
       f.close()
------
try:
   f = open('afile', 'r')
   content = f.read()
except Exception:
   error = 404
else:
   error = 200
finally:
   if locals().has_key('f'):
       f.close()
-------
try:
   f = open('afile', 'r')
   content = f.read()
   error = 200
except Exception:
   error = 404
finally:
   try:
       f.close()
   except Exception:
       pass
-------
try:
   f = None
   f = open('afile', 'r')
   content = f.read()
   error = 200
except Exception:
   error = 404
finally:
   if f:
       f.close()
----
try:
   with open('afile', 'r') as f:
       content = f.read()
   error = 200
except Exception:
   error = 404
----

Of the above I think I like the last one best, but I think
I'd really like to have:

with open('afile', 'r') as f with exceptions:
   content = f.read()
   error = 200
except Exception:
   error = 404

Another words from looking at PEP343 it is the author
of the object returned by the with expression that gets
to decide if exceptions are re-raised. But it would seem
to me it should be the programmer using it that should
decide.

Of course as a newbie, I may be way off base.

Thanks,

Wink Saville



From mensanator at aol.com  Mon Oct 22 18:37:10 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 15:37:10 -0700
Subject: for loop
In-Reply-To: <5o4m5kFktnthU6@mid.uni-berlin.de>
References: <mailman.347.1193091482.13605.python-list@python.org>
	<5o4m5kFktnthU6@mid.uni-berlin.de>
Message-ID: <1193092630.751179.198560@q5g2000prf.googlegroups.com>

On Oct 22, 5:22 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:
> > #Intro
> >     print "*********************************************"
> >     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
> >     print "*********************************************"
>
> >     print "This program will predict the size of a population of organisms."
> >     print
> >     print
> >     organisms=input("Please enter the starting number of organisms: ")
>
> >     increase=input("Please enter the average daily population increase
> > as a percentage (20% = .20): ")
>
> >     days=input("Please enter the number of days that they will multiply: ")
>
> > print "         Day                                    Population"
> > print "----------------------------------------------------------"
>
> > for p in range (days):
>
> >     population = organisms * population * increase
>
> >     print days,
>
> >     print "\t\t\t\t",population
>
> > I'm having problems with my for loop here to calculate estimated
> > population output to a table.  Instead of knowing how much I want to
> > loop it, the loop index is going to be whatever number of days the user
> > enters.  When I run my program, it asks the 3 questions above but then
> > just dead stops at a prompt which leads me to believe there's something
> > wrong with my loop.
>
> It should not run at all as it is indented inconsistently.  If that
> problem is corrected it will stop with a `NameError` because you try to
> read `population` before anything was assigned to it.
>
> Ciao,
>         Marc 'BlackJack' Rintsch

Also, I would guess that you want to print p, not days.



From aleax at mac.com  Wed Oct 17 11:13:31 2007
From: aleax at mac.com (Alex Martelli)
Date: Wed, 17 Oct 2007 08:13:31 -0700
Subject: Inheriting automatic attributes initializer considered harmful?
References: <ff4rc5$ill$1@newsreader2.netcologne.de>
	<mailman.121.1192626814.13605.python-list@python.org>
Message-ID: <1i64bxc.7f41mi1tsdr45N%aleax@mac.com>

Andrew Durdin <adurdin at gmail.com> wrote:

> On 10/17/07, Thomas Wittek <mail at gedankenkonstrukt.de> wrote:
> >
> > Writing such constructors for all classes is very tedious.
> > So I subclass them from this base class to avoid writing these constructors:
> >
> >   class AutoInitAttributes(object):
> >       def __init__(self, **kwargs):
> >           for k, v in kwargs.items():
> >               getattr(self, k) # assure that the attribute exits
> >               setattr(self, k, v)
> >
> > Is there already a standard lib class doing (something like) this?
> > Or is it even harmful to do this?
> 
> It depends on your kwargs and where they're coming from.  You could do
> something like this, for example:
> 
>     def fake_str(self):
>         return "not a User"
> 
>     u = User(__str__=fake_str)
>     str(u)

...and, if you did, that would be totally harmless (in a new-style class
as shown by the OP):

>>> class AutoInitAttributes(object):
...       def __init__(self, **kwargs):
...           for k, v in kwargs.items():
...               getattr(self, k) # assure that the attribute exits
...               setattr(self, k, v)
... 
>>> class User(AutoInitAttributes): pass
... 
>>> def fake_str(self):
...         return "not a User"
... 
>>> u = User(__str__=fake_str)
>>> str(u)
'<__main__.User object at 0x635f0>'
>>> 

fake_str is not called, because special-method lookup occurs on the
TYPE, *NOT* on the instance.

The OP's idea is handy for some "generic containers" (I published it as
the "Bunch" class back in 2001 in
<http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52308>, and I
doubt it was original even then); it's not particularly recommended for
classes that need to have some specific *NON*-special methods, because
then the "overwriting" issue MIGHT possibly be a (minor) annoyance.


Alex


From israelu at elbit.co.il  Mon Oct 22 08:33:35 2007
From: israelu at elbit.co.il (iu2)
Date: Mon, 22 Oct 2007 05:33:35 -0700
Subject: Failure to connect in SimpleXMLRPCServer/xmlrpclib
In-Reply-To: <mailman.316.1193050085.13605.python-list@python.org>
References: <1193034835.803633.121600@z24g2000prh.googlegroups.com>
	<mailman.316.1193050085.13605.python-list@python.org>
Message-ID: <1193056415.104998.16270@q3g2000prf.googlegroups.com>

On Oct 22, 12:47 pm, "J. Cliff Dyer" <j... at sdf.lonestar.org> wrote:
> iu2 wrote:
> > Hi all,
>
> > I've copied the example of RPC usage from the Python's doc.
> > When the client and server were on the same PC ("localhost") (I use
> > Windows)
> > it worked ok. But putting the server on a different PC raised the
> > error:
>
> > gaierror: (11001, 'getaddrinfo failed')
> > The error was raised upion accessing some function of the server,
> > i.e.,
> > print s.add_nums(1, 2, 3)  # server registered function
>
> > PCs in our organization are accessed by "\\<name>" so I used
>
> > s = xmlrpclib.Server(r'http://\\pc_name:8000')
> > I got the same error when I put some non-existing name.
> > Trying to remove the double-backslash from the PC's name raised the
> > error:
> > error: (10061, 'Connection refused')
>
> > I'll appreciate your help on this.
>
> > Thanks
> > iu2
>
> Don't use the \\.  That's a windows networking convention, and it does
> not apply if you are using http.  Your error messages tell you this.
> The first one (r'http://\\pc_name:8000') could not resolve the address.
> The second one reached the server just fine, but the server rejected the
> client's request.  So now the issue is why is the request being
> rejected?  Did you check your firewall to see if it is blocking access
> to port 8000 on the ethernet adapter?
>
> Cheers,
> Cliff- Hide quoted text -
>
> - Show quoted text -

Cliff and Diez, thanks. That helped. The server indeed was listening
on 127.0.0.1. I changed the hostname from "localhost" to
socket.gethostname() and it worked!



From cokofreedom at gmail.com  Thu Oct 11 11:25:09 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Thu, 11 Oct 2007 15:25:09 -0000
Subject: Finding Peoples' Names in Files
In-Reply-To: <felf4g$q8c$1@solaris.cc.vt.edu>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
Message-ID: <1192116309.880026.83240@r29g2000hsg.googlegroups.com>

On Oct 11, 5:22 pm, brad <byte8b... at gmail.com> wrote:
> Crazy question, but has anyone attempted this or seen Python code that
> does? For example, if a text file contained 'Guido' and or 'Robert' and
> or 'Susan', then we should return True, otherwise return False.

Can't you just use the string function .findall() ?



From trekker182 at comcast.net  Wed Oct 24 18:30:39 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Wed, 24 Oct 2007 18:30:39 -0400
Subject: for loop
In-Reply-To: <1193114335.616347.146300@e34g2000pro.googlegroups.com>
References: <mailman.347.1193091482.13605.python-list@python.org>	<5o4m5kFktnthU6@mid.uni-berlin.de>	<1193092630.751179.198560@q5g2000prf.googlegroups.com>	<1193094348.431443.237740@q3g2000prf.googlegroups.com>	<mailman.353.1193105567.13605.python-list@python.org>
	<1193114335.616347.146300@e34g2000pro.googlegroups.com>
Message-ID: <471FC78F.80106@comcast.net>

I agree, but if I want to get a A on the program, thats how my professor 
wants the output.

:)

mensanator at aol.com wrote:
> On Oct 22, 9:12?pm, Shawn Minisall <trekker... at comcast.net> wrote:
>   
>> Thanks, everyone!  Using everyone's suggestions and points, the program
>> is working great now.  
>>     
>
> Actually, it's not. I assume not printing the population
> was a copy error.
>
> But, by adding the "if (p>1):", you have now made
> day 1 the initial population, so if you ask for
> 8 days of multiplication, you actually only get 7.
>
> Although your code is working, it's not giving you
> the correct answer. Most of the time in these kinds
> of problems, days means elapsed days. That means for
> 100 organisms @ 25% growth/day, there will be 125
> after 1 elapsed day. But that "if (p>1):" means you
> show 100 at day 1, which is wrong. You have 100 after
> 0 elapsed days (or day 0).
>
>
>   
>> Here's the updated code.
>>
>> :)
>>
>> import math
>>
>> def main():
>>     #Declare and initialize variables
>>     #starting number of organisms
>>     organisms = 0
>>     #average daily population increase as %
>>     increase = 0.0
>>     #number of days they will multiply
>>     days = 0
>>     #population prediction
>>     population = 0.0
>>
>>     #Intro
>>     print "*********************************************"
>>     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
>>     print "*********************************************"
>>
>>     print "This program will predict the size of a population of organisms."
>>     print
>>     print
>>     while organisms <=1:
>>         organisms=input("Please enter the starting number of organisms: ")
>>         if organisms <=1:
>>             print "Error. Population must be at least two."
>>
>>     while increase <=0:
>>         increase=input("Please enter the average daily population
>> increase as a percentage (20% = .20): ")
>>         if increase <=0:
>>             print "The percent of increase must be positive."
>>
>>     while days <=0:
>>         days=input("Please enter the number of days that they will
>> multiply: ")
>>         if days <=0:
>>             print "The number of days must be positive."
>>
>>     print "         Day                                    Population"
>>     print "----------------------------------------------------------"
>>     population = organisms
>>
>>     for p in range (1,days+1):
>>         if(  p > 1 ):
>>             population = population + ( population * increase )
>>
>>         print "\t",p,
>>
>>
>>
>> mensana... at aol.com wrote:
>>     
>>> On Oct 22, 5:37 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>>>       
>>>> On Oct 22, 5:22 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>>>>         
>>>>> On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:
>>>>>           
>>>>>> #Intro
>>>>>>     print "*********************************************"
>>>>>>     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
>>>>>>     print "*********************************************"
>>>>>>             
>>>>>>     print "This program will predict the size of a population of organisms."
>>>>>>     print
>>>>>>     print
>>>>>>     organisms=input("Please enter the starting number of organisms: ")
>>>>>>             
>>>>>>     increase=input("Please enter the average daily population increase
>>>>>> as a percentage (20% = .20): ")
>>>>>>             
>>>>>>     days=input("Please enter the number of days that they will multiply: ")
>>>>>>             
>>>>>> print "         Day                                    Population"
>>>>>> print "----------------------------------------------------------"
>>>>>>             
>>>>>> for p in range (days):
>>>>>>             
>>>>>>     population = organisms * population * increase
>>>>>>             
>>>>>>     print days,
>>>>>>             
>>>>>>     print "\t\t\t\t",population
>>>>>>             
>>>>>> I'm having problems with my for loop here to calculate estimated
>>>>>> population output to a table.  Instead of knowing how much I want to
>>>>>> loop it, the loop index is going to be whatever number of days the user
>>>>>> enters.  When I run my program, it asks the 3 questions above but then
>>>>>> just dead stops at a prompt which leads me to believe there's something
>>>>>> wrong with my loop.
>>>>>>             
>>>>> It should not run at all as it is indented inconsistently.  If that
>>>>> problem is corrected it will stop with a `NameError` because you try to
>>>>> read `population` before anything was assigned to it.
>>>>>           
>>>>> Ciao,
>>>>>         Marc 'BlackJack' Rintsch
>>>>>           
>>>> Also, I would guess that you want to print p, not days
>>>>         
>>> Oh, and your calculation is incorrect. You don't multiply by
>>> organisms in every loop iteration, organisms is the initial
>>> value of population, so you can solve the "Name" error by doing
>>> population = organisms before the for..loop.
>>>       
>>> And since you're asking for an increase, you don't multiply by the
>>> percent (as that would decrease the population), but instead by
>>> 1+increase.
>>>       
>>> Also, does day==0 represent the first day of increase or the
>>> initial value? One would normally expect day==0 to be the initial
>>> value, but as written, day==0 is the first day of increase. I
>>> would use xrange(1,days+1) instead.
>>>       
>>> Lastly, you can't have a fraction of an organism, right? You might
>>> want to print your floating point population rounded to an integer.
>>>       
>>> population = organisms
>>> for p in xrange(1,days+1):
>>>   population = population * (1 + increase)
>>>   print p,
>>>   print "\t\t\t\t%0.0f" % (population)
>>>       
>>> ##  *********************************************
>>> ##  WELCOME TO THE POPULATION GROWTH CALCULATOR
>>> ##  *********************************************
>>> ##  This program will predict the size of a population of organisms.
>>> ##
>>> ##
>>> ##  Please enter the starting number of organisms: 100
>>> ##  Please enter the average daily population increase as a percentage
>>> (20% = .20): 0.25
>>> ##  Please enter the number of days that they will multiply: 8
>>> ##           Day                                    Population
>>> ##  ----------------------------------------------------------
>>> ##  1                              125
>>> ##  2                              156
>>> ##  3                              195
>>> ##  4                              244
>>> ##  5                              305
>>> ##  6                              381
>>> ##  7                              477
>>> ##  8                              596- Hide quoted text -
>>>       
>> - Show quoted text -
>>     
>
>
>   



From prabavaguru.kcas at gmail.com  Mon Oct 15 09:49:17 2007
From: prabavaguru.kcas at gmail.com (praba)
Date: Mon, 15 Oct 2007 06:49:17 -0700
Subject: Online Jobs.Earn Rs.50000 every month.
Message-ID: <1192456157.272467.62020@v23g2000prn.googlegroups.com>

Online Jobs.Earn Rs.50000 every month.

http://readymademoney.blogspot.com/



From gmguyx at gmail.com  Sat Oct 27 03:29:39 2007
From: gmguyx at gmail.com (gmguyx)
Date: Sat, 27 Oct 2007 00:29:39 -0700
Subject: cannot open webpage which requires authentication
Message-ID: <1193470179.922850.90410@v23g2000prn.googlegroups.com>

I tried using urllib.urlopen to open a personalized webpage
(my.yahoo.com) but it doesn't work:

print urllib.urlopen(http://my.yahoo.com).read()

Instead of returning my.yahoo.com, it returns a page asking me to log
in.

So then I tried urllib.urlencode:

data = urllib.urlencode({'action': 'https://login.yahoo.com/config/
login?', 'login': <mylogin>, 'passwd': <mypassword>})
print urllib.urlopen(http://my.yahoo.com, data).read()

However, this doesn't work either. Is there a way to do this? Thanks
in advance.



From rbonvall at gmail.com  Tue Oct 16 12:51:47 2007
From: rbonvall at gmail.com (Roberto Bonvallet)
Date: Tue, 16 Oct 2007 16:51:47 -0000
Subject: Normalize a polish L
In-Reply-To: <1192485438.934146.139740@q5g2000prf.googlegroups.com>
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<1192485438.934146.139740@q5g2000prf.googlegroups.com>
Message-ID: <1192553507.049705.17200@z24g2000prh.googlegroups.com>

On Oct 15, 6:57 pm, John Machin <sjmac... at lexicon.net> wrote:
> To "asciify" such text, you need to build a look-up table that suits
> your purpose. unicodedata.decomposition() is (accidentally) useful in
> providing *some* of the entries for such a table.

This is the only approach that can actually work, because every
language has different conventions on how to represent text without
diacritics.

For example, in Spanish, "?" (u with umlaut) should be represented as
"u", but in German, it should be represented as "ue".

    ping?ino -> pinguino
    Fr?hst?ck -> Fruehstueck

I'd like that web applications (e.g. blogs) took into account these
conventions when creating URLs from the title of an article.
--
Roberto Bonvallet



From korovev76 at gmail.com  Tue Oct 23 14:29:17 2007
From: korovev76 at gmail.com (korovev76 at gmail.com)
Date: Tue, 23 Oct 2007 11:29:17 -0700
Subject: Root element name not declared
Message-ID: <1193164157.943495.226850@z24g2000prh.googlegroups.com>

Hi guys, i'm using pyrxp to parse some xml like this one:

<?xml version="1.0"?>
<!DOCTYPE MyMessage SYSTEM "mymessage.dtd">
<MyMessage release="2.0">
<From>abc</From>
<To>def</To>
.....

where the dtd is defined like this:

<!ENTITY % UsingLocalNames "IGNORE" >
<![%UsingLocalNames;[
<!ENTITY % MyMessage                  "">
<!ENTITY % FieldA                      "">
<!ENTITY % FieldB                      "">
,,,,,


While parsing, I receive an error like this one: Root element name
MyMessage not declared....
Being both the file and the dtd provided by the supplier, I believe
they're correct so I don't understand what's wrong. MyMessage IS
declared... isn't it sufficient?

Thanx
korovev



From horpner at yahoo.com  Tue Oct 30 11:25:54 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Tue, 30 Oct 2007 15:25:54 GMT
Subject: setting variables in outer functions
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
Message-ID: <slrnfiejco.18k.horpner@FIAD06.norwich.edu>

On 2007-10-29, Steven Bethard <steven.bethard at gmail.com> wrote:
> Hrvoje Niksic wrote:
>> Tommy Nordgren <tommy.nordgren at comhem.se> writes:
>> 
>>> Given the following:
>>> def outer(arg)
>>>      avar = ''
>>>      def inner1(arg2)
>>>           # How can I set 'avar' here ?
>> 
>> I don't think you can, until Python 3:
>> http://www.python.org/dev/peps/pep-3104/
>
> But it definitely does work in Python 3 if you use 'nonlocal'::
>
>      Python 3.0a1+ (py3k:58681, Oct 26 2007, 19:44:30) [MSC v.1310 32 bit
>      (Intel)] on win32
>      Type "help", "copyright", "credits" or "license" for more
>      information.
>      >>> def f():
>      ...     x = 1
>      ...     def g():
>      ...         nonlocal x
>      ...         x = 2
>      ...     print(x)
>      ...     g()
>      ...     print(x)
>      ...
>      >>> f()
>      1
>      2
>
> That said, I'd like to see the reason you think you want to do
> this.

It's allows a standard programming idiom which provides a
primitive form of object oriented programming using closures to
represent state.

def account(opening_balance):
  balance = opening_balance
  def get_balance():
    nonlocal balance
    return balance
  def post_transaction(x):
    nonlocal balance
    balance += x
  return balance, post_transaction

fred_balance, fred_post = account(1500)
joe_balance, joe_post = account(12)
fred_post(20)
joe_post(-10)
fred_balance()
1520
joe_balance()
2

Python classes will of course nearly always win, though the idiom
looks like it might be faster (I don't have Python 3000 to try it
out).

-- 
Neil Cerutti
It isn't pollution that is hurting the environment; it's the impurities in our
air and water that are doing it. --Dan Quayle


From ptmcg at austin.rr.com  Tue Oct  2 18:23:37 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 02 Oct 2007 15:23:37 -0700
Subject: List Question
In-Reply-To: <mailman.1411.1191362300.2658.python-list@python.org>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
	<1191360038.845477.170160@22g2000hsm.googlegroups.com>
	<mailman.1411.1191362300.2658.python-list@python.org>
Message-ID: <1191363817.022851.308170@y42g2000hsy.googlegroups.com>

On Oct 2, 4:58 pm, Pablo Ziliani <pa... at decode.com.ar> wrote:
> Paul Hankin wrote:
> > On Oct 2, 10:06 pm, brad <byte8b... at gmail.com> wrote:
>
> >> How is this expressed in Python?
>
> >> If x is in y more than three times:
> >>      print x
>
> >> y is a Python list.
>
> > Simple and readable:
> > if len([a for a in y if x == a]) > 3:
> >     print x
>
> > Or the slightly-too-flashy version:
> > if sum(1 for a in y if x == a) > 3:
> >     print x
>
> <joke>
>
> I always use this full-featured, all-inclusive, rock-solid version (see
> the try/except block):
>
> count = i = 0
> x = 1
> y = [1,2,3,4,5,1,2,3,4,1,2,1]
> try:
>     while count < 3:
>         if y[i] == x:
>             count += 1
>         i += 1
> except RuntimeError:
>     pass
> except IndexError:
>     pass
> else:
>     print x
>
> </joke>
>
> Sorry, couldn't resist...- Hide quoted text -
>
> - Show quoted text -

Well, there is an advantage to your method/madness, in that it does
short-circuiting once the magic count of 3 is found.  If the list
contained *many* entries, or if the predicate were expensive to
evaluate, or if the count were likely to be satisfied within the first
few list elements, your approach beats the other count or sum
suggestions (since they evaluate all list entries).

Here's a version of your code using itertools.takewhile:

count = 0
for a in itertools.takewhile(lambda _:count<3,y):
    count += (x==a)
if count==3:
    print x

-- Paul




From mail at microcorp.co.za  Sun Oct 28 03:55:15 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sun, 28 Oct 2007 09:55:15 +0200
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl><1193438763.190428.134710@q5g2000prf.googlegroups.com><87tzodii6i.fsf@benfinney.id.au><1193494184.618613.81090@50g2000hsm.googlegroups.com>
	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
Message-ID: <006801c81937$e0f04ec0$03000080@hendrik>

"Paul Hankin" <p...l.com>wrote:


> Even clearer is not to allow octal literals :) Is there *any* use for
> them?

I tend to agree with this point of view - but I fear it will set up a howl
of protest amongst the Brits who cut their teeth on 24 bit ICT/ICL 
equipment...

- Hendrik




From steve at holdenweb.com  Fri Oct  5 07:44:46 2007
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 05 Oct 2007 07:44:46 -0400
Subject: Python Magazine: Issue 1 Free!
Message-ID: <fe583c$4kj$1@sea.gmane.org>

I've just been told by the editors at Python Magazine that the first 
issue is out. It's all-electronic so anyone can download and read it. 
Let them know what you think:

   http://www.pythonmagazine.com/c/issue/2007/10

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From alan.isaac at gmail.com  Mon Oct 29 12:10:24 2007
From: alan.isaac at gmail.com (Alan Isaac)
Date: Mon, 29 Oct 2007 12:10:24 -0400
Subject: simple try/except question
In-Reply-To: <mailman.586.1193673457.13605.python-list@python.org>
References: <xfnVi.9506$aJ3.5968@trnddc02>
	<mailman.586.1193673457.13605.python-list@python.org>
Message-ID: <472605F0.5070909@american.edu>

Tim Chase wrote:
> It works for me(tm)...
> Python 2.4.3

Sorry to have left out that detail.
Yes, it works for me in Python 2.4,
but not in 2.5.1.

The code I posted was copyied from the interpreter.

Alan Isaac


From goldtech at worldpost.com  Sat Oct  6 23:18:02 2007
From: goldtech at worldpost.com (goldtech)
Date: Sat, 06 Oct 2007 20:18:02 -0700
Subject: Tkinter text widget
Message-ID: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>

I thought the "DISABLED" made it so I could not edit it. But it also
makes it so I can not scroll down. If you make the window smaller than
the content then try to put a cursor in there to use up/down arrow you
can't.

What I want is not to be able to change text content, but no other
action is disabled. Is this complicated to do?

Thanks.


from Tkinter import *
root = Tk()
text = Text(root, font=("Courier"))
text.pack()
i='123456789abcdefghijklmnopqrstuvwxyz\n'
for x in range(30):
    text.insert(END, i)
text.config(state=DISABLED)
mainloop()



From paul.hankin at gmail.com  Sat Oct 27 11:27:47 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 27 Oct 2007 15:27:47 -0000
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <1193494184.618613.81090@50g2000hsm.googlegroups.com>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<1193494184.618613.81090@50g2000hsm.googlegroups.com>
Message-ID: <1193498867.815682.69050@v3g2000hsg.googlegroups.com>

On Oct 27, 3:09 pm, MRAB <goo... at mrabarnett.plus.com> wrote:
> On Oct 27, 12:12 am, Ben Finney <bignose+hates-s... at benfinney.id.au>
> wrote:> Matimus <mccre... at gmail.com> writes:
> > > The trailing L [for 'long' literals] is going away in Python 3.0.
>
> > Yes. On the other hand, we are gaining '0bNNNN' for binary literals,
> > to go along with '0oNNNN' for octal and '0xNNNN' for hexadecimal.
>
> > So, the original poster might get further by proposing an '0dNNN.NNN'
> > syntax for 'decimal.Decimal' literals. At least the syntax would be
> > consistent and wouldn't add a new punctuation character to the
> > language...
>
> [snip]
> Some languages have or permit 0qNNNN or 0QNNNN for octal to reduce the
> chance of confusion of 'O' (oh) with '0' (zero) in uppercase, eg.
> 0Q123 is clearer than 0O123 (0 oh 123), although lowercase is better,
> eg. 0q123 or 0o123.

Even clearer is not to allow octal literals :) Is there *any* use for
them?

--
Paul Hankin



From beema.shafreen at gmail.com  Tue Oct 30 01:28:18 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Tue, 30 Oct 2007 10:58:18 +0530
Subject: appending into a list
Message-ID: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>

hi everybody,
                  I have a file :
   A                     B              C                     D       E

 2717353      2717412    A_16_P03641964    214    -59
  2717626      2717685    A_16_P41563655    25    -59
  2717710      2717754    A_16_P03641965    1250    -44
  2719004      2719063    A_16_P03641966    -36    -59
  2719027      2719086    A_16_P21360229    289    -59
  2719375      2719428    A_16_P03641967    60    -53
  2719488      2719542    A_16_P21360231    418    -54
  2719960      2720014    A_16_P03641968    727    -54
  2720741      2720786    A_16_P03641969    494    -45
  2721280      2721339    A_16_P03641970    -28    -59
  2721311      2721370    A_16_P21360234    150    -59
  2721520      2721569    A_16_P21360235    199    -49
  2721768      2721821    A_16_P03641971    139    -53
  2721960      2722004    A_16_P21360237    312    -44
I need to append the column D and E into a list:
                            in such a way that the list should have
[D,E,D,E,D,E........]
How do i do it.

regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071030/c9170059/attachment.html>

From besturk at gmail.com  Wed Oct 31 17:39:05 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 31 Oct 2007 21:39:05 -0000
Subject: 3 number and dot..
In-Reply-To: <1193863848.080615.191090@v3g2000hsg.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<1193863848.080615.191090@v3g2000hsg.googlegroups.com>
Message-ID: <1193866745.406360.62830@z9g2000hsf.googlegroups.com>

On Oct 31, 10:50 pm, Roberto Bonvallet <rbonv... at gmail.com> wrote:
> On 31 oct, 16:58, Abandoned <best... at gmail.com> wrote:
>
>
>
> > Hi..
> > I want to do this:
> > for examle:
> > 12332321 ==> 12.332.321
>
> > How can i do?
> >>> x = 12332321
> >>> '.'.join(''.join(i for n, i in g) for k, g in groupby(enumerate(reversed(str(x))), lambda (n, i): n//3))[::-1]
> '12.332.321'
>
> --
> Roberto Bonvallet

I'm sorry but it give me error "no module named groupby"
My python version is 2.51



From bcd at pvv.ntnu.no  Wed Oct  3 14:20:38 2007
From: bcd at pvv.ntnu.no (Bent C Dalager)
Date: Wed, 3 Oct 2007 18:20:38 +0000 (UTC)
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<85ve9ov971.fsf@lola.goethe.zz> <fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
Message-ID: <fe0mhm$c08$1@orkan.itea.ntnu.no>

In article <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0 at 4ax.com>,
George Neuner  <gneuner2/@comcast.net> wrote:
>On Wed, 3 Oct 2007 09:36:40 +0000 (UTC), bcd at pvv.ntnu.no (Bent C
>Dalager) wrote:
>
>>
>>Only if you're being exceedingly pedantic and probably not even
>>then. Webster 1913 lists, among other meanings,
>>
>>Free
>>(...)
>>"Liberated, by arriving at a certain age, from the control
>>of parents, guardian, or master."
>>
>>The point presumably being that having been "liberated", you are now
>>"free".
>
> (...)
>
>The English language has degenerated significantly in the last 30
>years.
> (...)
>
>Dictionaries used to be the arbiters of the language - any word or
>meaning of a word not found in the dictionary was considered a
>colloquial (slang) use.  Since the 1980's, an entry in the dictionary
>has become little more than evidence of popularity as the major
>dictionaries (OED, Webster, Cambridge, etc.) will now consider any
>word they can find used in print.

Apparantly, you missed the part where I referred to the 1913 edition
of Webster. I have kept it in the quoted text above for your
convenience. I can assure you that 1913 is both more than 30 years ago
/and/ it is before 1980, in case that was in doubt.

Cheers
	Bent D
-- 
Bent Dalager - bcd at pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs


From deets at nospam.web.de  Thu Oct 18 11:35:28 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 17:35:28 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
Message-ID: <5npcq3Fjgi5nU1@mid.uni-berlin.de>

Abandoned wrote:

> On Oct 18, 6:14 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> Abandoned wrote:
>> > Thanks you all answer..
>> > But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
>> > (100.000 elements)
>> > Is there any easy alternative ?
>>
>> How big? How slow? For me, a 10000-element list takes  0.04 seconds to be
>> parsed. Which I find fast.
>>
>> Diez
> 
> 173.000 dict elements and it tooks 2.2 seconds this very big time for
> my project

Where does the data come from?

Diez


From duncan.booth at invalid.invalid  Wed Oct 31 09:49:50 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 31 Oct 2007 13:49:50 GMT
Subject: A Python 3000 Question
References: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<mailman.653.1193760145.13605.python-list@python.org>
	<slrnfigtq9.1mk.horpner@FIAD06.norwich.edu>
Message-ID: <Xns99DA8CAD0B7E2duncanbooth@127.0.0.1>

Neil Cerutti <horpner at yahoo.com> wrote:

> But if I'm wrong about the performance benefits then I guess I'm
> still in the dark about why len is a builtin. The only compelling
> thing in the linked explation was the signatures of the guys who
> wrote the artible. (Guido does admit he would, "hate to lose it
> as a builtin," but doesn't explain why that should be a bad
> thing).

With most of the builtin functions there is an advantage since they wrap 
a bit of extra logic round the implementation: e.g. getattr hooks to 
__getattr__ or __getattribute__.

With len that doesn't really apply, as the only extra logic seems fairly 
pointless: sequences and mappings implement length differently so you 
could have a type which acts as both and returns different lengths for 
each. Also the result returned from __len__ is cast from a Python object 
to a C value and back again so you can't return a length which is too 
large to convert.

The main benefit that I can think of is that it avoids namespace 
pollution: most Python special methods (the ones you aren't supposed to 
call directly) have the double-underscores flagging them as separate 
from user methods. This is a good thing: you can create a class which 
acts like a builtin sequence, but which has any attributes you fancy: 
the obvious example being the classic "it's a tuple but all the elements 
are also accessible as attributes" returned from time.localtime(), 
os.stat(). Try this in a language like Javascript and nasty things 
happen when your attribute names clash with internal attribute names.

So that's my conclusion: it is a builtin function rather than a method 
in order to avoid polluting the user attribute space of user-defined 
classes.

Obviously it isn't an absolute thing: lists and dictionaries do have 
other methods in the user namespace, so the decision to keep len out of 
that namespace is partly a judgement call, and partly historical (I 
think tuples didn't used to have any methods at all).


From Caseyweb at gmail.com  Thu Oct  4 16:58:05 2007
From: Caseyweb at gmail.com (Casey)
Date: Thu, 04 Oct 2007 13:58:05 -0700
Subject: What does the syntax [::-1] really mean?
In-Reply-To: <Xns99BFDB14727D0duncanbooth@127.0.0.1>
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
	<Xns99BFD8C6B2BF5duncanbooth@127.0.0.1>
	<Xns99BFDB14727D0duncanbooth@127.0.0.1>
Message-ID: <1191531485.929483.146370@k79g2000hse.googlegroups.com>

On Oct 4, 4:32 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> > the invariant that you are looking for is that for all non-negative a, b:
> >    x[a:b:1] reversed is x[-len(x)+b-1:-len(x)+a-1:-1]
>
> I should of course have said "all a, b in the range 0 <= a <= len(x) and 0
> <= b <= len(x)".

Thanks, again! I figured it out from Fred's and your initial posts.
IM(ns)HO, this is non-intuitive.

I would expect that the reverse of x[i,j,k] would be x[j,i,-k]; eg;
x[0:len(x):1] would be x[len(x):0:-1].  This representation is little
more than syntactic sugar for x[y for y in range(i,j,k)], with a -1
adjustment to i and j if k is < 0 (due to the way range operates) and
with appropriate boundary checking on i and j.  The default values for
i and j would become (0,len(x)), flopped for k < 0.

There may be a good (or not-so-good) reason this representation
wouldn't have worked or would have caused problems.  Or maybe it is
just personal preference.



From coolman_suk at yahoo.com  Tue Oct 16 01:21:28 2007
From: coolman_suk at yahoo.com (coolman_suk at yahoo.com)
Date: Mon, 15 Oct 2007 22:21:28 -0700
Subject: i need to get orkut (google) data without gdata, pls help!!!!
Message-ID: <1192512088.494244.290490@q3g2000prf.googlegroups.com>

hi,i am making a plugin for my app ( insert.clappings() ) and right
now i am in some serious problem.

i need a way to authenticate myself into orkut.com, get a session
cookie , open a bunch of files, and make rss out of them! i can handle
the make rss part.

some of u might know about gdata for python (it exists , found out
today on python.org) but it doesnt support the orkut service moreover
i just need to get data not send it.

i had been trying to getinto orkut for a while, (actually i was
writing a urllib http handler) but i could not handle the cookie dance
that google was playing with me.

my eyes are paining right now AND I NEED SOME  HELP FROM U GUYES (not
how to rest my eyes lol but how to login to orkut!)


anyone who has ever done this or could explain how google plays the
cookie dance!


SKI
(giving my eyes some rest)



From rowing.golfer at no_spam.virgin.net  Fri Oct 26 11:37:06 2007
From: rowing.golfer at no_spam.virgin.net (Neil Wallace)
Date: Fri, 26 Oct 2007 10:37:06 -0500
Subject: Dual Python Installed Environments..
References: <mailman.462.1193348012.13605.python-list@python.org>
Message-ID: <Pb6dnf3Hh5Y_lL_aRVnyuQA@bt.com>

On Thu, 25 Oct 2007 14:45:51 -0700, sam wrote:

> Hi..
> 
> I'm looking to install dual versions of python 2.3, 2.4 on the same box.
> I'm trying to figure out if there's something I'm missing, some kind of
> gotchas that I haven't seen.
> 
> I'm also trying to figure out how to allow my script to determine which
> version to use???
> 
> Thanks

Here's one that tripped me up...
I altered the symlink at /usr/bin/python to point to Python 2.2 which I 
installed in my home folder (see below for the reason.. in case you are 
wondering) this broke some packages in my distribution (Ubuntu).
I could see the broken packages, and didn't need them anymore, but I was 
unable to remove them as the removal scripts were (presumably) python 2.4+

Much head scratching at the time.

Neil.
Reason - I had written some CGI scripts and tested them thoroughly on my
localhost version of the site. However I uploaded the files, and some of
them didn't work, my sites server (not under my full control) runs Python
2.2, so I downloaded 2.2, and made it default so that localhost used this
version so I could retest and ammend etc..



From ldo at geek-central.gen.new_zealand  Thu Oct  4 04:05:06 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 21:05:06 +1300
Subject: A question about subprocess
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
	<fe26g8$vs0$1@lust.ihug.co.nz>
Message-ID: <fe26rj$vs0$4@lust.ihug.co.nz>

In message <fe26g8$vs0$1 at lust.ihug.co.nz>, Lawrence D'Oliveiro wrote:

> ... each one waiting for a remote process
> on some master machine to terminate.

Of course, "master" there should be "slave". :)


From beema.shafreen at gmail.com  Tue Oct 30 08:14:08 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Tue, 30 Oct 2007 17:44:08 +0530
Subject: redundancy_check
Message-ID: <aa405c1f0710300514u60171abekff315148f3ff40e@mail.gmail.com>

hi everbody,
                I have a file,
 a             b                      c
1454    VALTGLTVAEYFR    8.9954e-07
1454    VALTGLTVAEYFR    0.00404626
1498    STLTDSLVSK    0.00404626
1505    TIAMDGTEGLVR    1.50931e-05
1528    GAEISAILEER    0.00055542
1528    GAEISAILEER    0.00055542
1538    YPIEHGIITNWDDMEK    0.0180397
1540    YPIEHGIITNWDDMEK    3.69329e-05
1552    AQIVGGFPIDISEAPYQISLR    0.015136


The file has redundancy in lines ,  I have to print the line without
redundancy on consideration to the column c of the two lines which are
redundant and those that are having column c  lesser value than the other.
how do i do it.


regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071030/92b62d6a/attachment.html>

From massung at gmail.com  Tue Oct  9 15:27:10 2007
From: massung at gmail.com (Jeff M.)
Date: Tue, 09 Oct 2007 19:27:10 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <1191958030.300166.209950@57g2000hsv.googlegroups.com>


> (6) any good readable references that explain it lucidly ?

This was something that has been very interesting to me for a while
now, and I'm actually still having a difficult time wrapping my head
around it completely.

The best written explanation that I've come across was in "The Scheme
Programming Language" (http://mitpress.mit.edu/catalog/item/
default.asp?ttype=2&tid=9946). But perhaps others have better
references.

I'll attempt my own little explanation of call/cc. I'll butcher some
of it, I'm sure, but hopefully those more knowledgeable will politely
correct me. I will start with a loose analogy and point out a couple
examples I came across that did make a lot of sense.

First, the bad analogy I have (if you are coming from C programming
like me) is setjmp and longjmp. This is a bad analogy in that you're
talking about hardware and stack states as opposed to functions, but a
good analogy in that it saves the current state of execution, and
returns to that same state at a later time with a piece of data
attached to it.

My first example of using this would be to create a return function in
Scheme. I hope I don't get this wrong, but the example would be
something like this:

(define (my-test x)
  (call/cc (lambda (return)
             (return x))))

Now, here's my understanding of what is happening under-the-hood:

1. call/cc stores the current execution state and creates a function
to restore to that state.

2. call/cc then calls its own argument with the function it created.

The key here is that "return" is a function (created by call/cc)
taking 1 argument, and it restores execution at the same state it was
when the call/cc began (or immediately after it?). This line:

(return x)

is really just calling the function created by call/cc, which will
restore the execution state to what it was just prior to the call/cc,
along with a parameter (in this case, the value of x).

My next example I don't follow 100%, and I won't attempt to reproduce
it here, but it generates a continuation that modifies itself (bad?)
to define a list iterator.

http://blog.plt-scheme.org/2007/07/callcc-and-self-modifying-code.html

I recommend putting that code into a Scheme interpreter and running
it. You'll get it.

Hope this helps, and I look forward to better explanations than mine
that will help me along as well. :)

Jeff M.



From Scott.Daniels at Acm.Org  Thu Oct 25 22:46:59 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Thu, 25 Oct 2007 19:46:59 -0700
Subject: Parallel insert to postgresql with thread
In-Reply-To: <mailman.450.1193323639.13605.python-list@python.org>
References: <1193310044.750654.157320@22g2000hsm.googlegroups.com>	<5obctcFm7sogU1@mid.uni-berlin.de>	<13i12q276igp0df@corp.supernews.com>
	<mailman.450.1193323639.13605.python-list@python.org>
Message-ID: <13i2l4k42hvaccd@corp.supernews.com>

Erik Jones wrote:
> 
> On Oct 25, 2007, at 7:28 AM, Scott David Daniels wrote:
>> Diez B. Roggisch wrote:
>>> Abandoned wrote:
>>>> Hi..
>>>> I use the threading module for the fast operation. But ....
>> [in each thread]
>>>> def save(a,b,c):
>>>>             cursor.execute("INSERT INTO ...
>>>>             conn.commit()
>>>>             cursor.execute(...)
>>>> How can i insert data to postgresql the same moment ?...
>>>
>>> DB modules aren't necessarily thread-safe. Most of the times, a 
>>> connection (and ... cursor) can't be shared between threads.
>>> So open a connection for each thread.
>>
>> Note that your DB server will have to "serialize" your inserts, so
>> ... a single thread through a single connection to the DB is the way 
>> to go.  Of course it (the DB server) may be clever enough to behave 
>> "as if" they are serialized, but most of your work parallelizing at 
>> your end simply creates new work at the DB server end.
> 
> Fortunately, in his case, that's not necessarily true....  If he 
> goes the recommended route with a separate connection for each thread, 
> then Postgres will not serialize multiple inserts coming from separate 
> connections unless there is something like and ALTER TABLE or REINDEX 
> concurrently happening on the table.  
 > The whole serialized inserts thing is strictly something popularized
 > by MySQL and is by no means necessary or standard (as with a lot of
> MySQL).

But he commits after every insert, which _does_ force serialization (if
only to provide safe transaction boundaries).  I understand you can get
clever at how to do it, _but_ preserving ACID properties is exactly what
I mean by "serialize," and while I like to bash MySQL as well as the
next person, I most certainly am not under the evil sway of the vile
MySQL cabal.

The server will have to be able to abort each transaction
_independently_ of the others, and so must serialize any index
updates that share a page by, for example, landing in the same node
of a B-Tree.

-Scott David Daniels
Scott.Daniels at Acm.Org


From tim at timgolden.me.uk  Sat Oct 13 05:03:45 2007
From: tim at timgolden.me.uk (Tim Golden)
Date: Sat, 13 Oct 2007 10:03:45 +0100
Subject: Pyro:  ActiveState (wind32) to Unix
In-Reply-To: <470F311C.2000201@timgolden.me.uk>
References: <0A53725C4A497848A7B3A0874B2598313D38EB@acesxch01.ADVENTISTCORP.NET>
	<470F311C.2000201@timgolden.me.uk>
Message-ID: <471089F1.4040801@timgolden.me.uk>

Tim Golden wrote:
> Sells, Fred wrote:
>> I'm using ActiveState python on a windows box to talk to ACtive 
>> Directory.  
>  > I'm running a Pyro Server on the same box.
>>
>> The client is Linux running std Python 2.4.
>>
>> It works just fine until the server codes calls some 
>  > win32com.client api;  then I get
>>

>> ImportError: No module named pywintypes

[followed by private email from Fred containing the
client/server files]

Well it works ok for me running from an XP box to a Ubuntu
VMWare image on the same machine. Since I don't have AD
running on this laptop I made as few changes as possible
to substitute WMI instead which uses the same Python &
Windows tech. infrastructure -- ie you pass a moniker to
win32com.client.GetObject. Obviously there could be something
specific to the AD LDAP: interface here but I seriously doubt
it.

One thing you will have to be aware of -- although I honestly
doubt it's behind the issue here -- is that running a Pyro
server means implictly running in threads. And *that* means
that, since the LDAP: interface is a (D)COM-based interface,
you'll need to call pythoncom.CoInitialize to kick COM into
threading mode. Failing to do that using WMI causes the
mildly bizarre "Syntax error" when you try to do
.GetObject ("wimgmts:..."). It's just possible that the
error you're seeing is the LDAP equivalent. And that
Pyro is trying to pull the error message across the link
to tell you what it is. (Maybe).

In short, then, try adding the line:

   pythoncom.CoInitialize ()

within the proxy's .getProperties method (having imported
pythoncom up to, of course) and then:

   pythoncom.CoUninitialize ()

just before the return in that method.

I've only just realised that this is a thread on the main
python-list. If this goes nowhere here, try copying it
over to the Pyro mailing list; I'm not sure if Irmen
(Mr Pyro) follows this list.

TJG


From shriphanip at gmail.com  Wed Oct 10 07:42:00 2007
From: shriphanip at gmail.com (Shriphani)
Date: Wed, 10 Oct 2007 11:42:00 -0000
Subject: Last value of yield statement
In-Reply-To: <470cb1fd@news.eftel.com.au>
References: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
	<470cb1fd@news.eftel.com.au>
Message-ID: <1192016520.355582.317090@57g2000hsv.googlegroups.com>

On Oct 10, 4:05 pm, John Machin <sjmac... at lexicon.net> wrote:
> On 10/10/2007 8:19 PM, Shriphani wrote:
>
>
>
> > Hello all,
>
> > Let us say I have a function like this:
>
> > def efficientFiller(file):
> >         worthless_list = []
> >         pot_file = open(file,'r')
> >         pot_file_text = pot_file.readlines()
> >         for line in pot_file_text:
> >                 if line.find("msgid") != -1:
> >                         message_id = shlex.split(line)[1]
> >                         if message_id in dictionary:
> >                                 number = pot_file_text.index(line)
> >                                 corresponding_crap =
> > dictionary.get(message_id)
> >                                 final_string = 'msgstr' + " " + '"' +
> > corresponding_crap + '"' + '\n'
> >                                 pot_file_text[number+1] = final_string
> >                                 yield pot_file_text
>
> > efficient_filler =  efficientFiller("libexo-0.3.pot")
> > new_list = list(efficient_filler)
> > print new_list
>
> > I want to plainly get the last value the yield statement generates.
> > How can I go about doing this please?
>
> I don't think that 'efficient' and 'plainly' mean what you think they
> mean. However to answer your question:
>
>      new_list[-1] if new_list else None
>
> BTW I get the impression that the yield statement yields the whole
> pot_file_text list each time, so that new_list will be a list of lists;
> is that intentional?

Hello again,
I am sorry for having made that extra post and should have seen that
the solution I wanted was posted here. Anyway thanks a lot

Regards,
Shriphani Palakodety



From fabian at syameses.com  Mon Oct 22 17:29:35 2007
From: fabian at syameses.com (=?ISO-8859-1?Q?Fabian_L=F3pez?=)
Date: Mon, 22 Oct 2007 23:29:35 +0200
Subject: ignoring chinese characters parsing xml file
In-Reply-To: <5o4evvFktnthU5@mid.uni-berlin.de>
References: <mailman.340.1193081085.13605.python-list@python.org>
	<5o4evvFktnthU5@mid.uni-berlin.de>
Message-ID: <851acc320710221429ob9034c4ofa10066ebcb8bf00@mail.gmail.com>

Thanks Mark, the code is like this. The attrib name is the problem:

from lxml import etree

context = etree.iterparse("file.xml")
for action, elem in context:
    if elem.tag == "weblog":
        print action, elem.tag , elem.attrib["name"],elem.attrib["url"],
elem.attrib["rssUrl"]

And the xml file like:
<weblog name="xxxxxx" url="http://weblogli.com " when="4" />


22 Oct 2007 20:20:16 GMT, Marc 'BlackJack' Rintsch <bj_666 at gmx.net>:
>
> On Mon, 22 Oct 2007 21:24:40 +0200, Fabian L?pez wrote:
>
> > I am parsing an XML file that includes chineses characters, like ^
> > uu????w.?L??? or ??????... The problem is that I get an error like:
> > UnicodeEncodeerror:'charmap' codec can't encode characters in
> > position..
>
> You say you are *parsing* the file but this is an *encode* error.  Parsing
> means *decoding*.
>
> You have to show some code and the actual traceback to get help.  Crystal
> balls are not that reliable.  ;-)
>
> Ciao,
>         Marc 'BlackJack' Rintsch
> --
> http://mail.python.org/mailman/listinfo/python-list
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/99235a48/attachment.html>

From nytrokiss at gmail.com  Mon Oct 15 00:08:50 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Sun, 14 Oct 2007 21:08:50 -0700
Subject: Entering username & password automatically using urllib.urlopen
In-Reply-To: <5ne85rFhraaeU1@mid.uni-berlin.de>
References: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
	<5ne85rFhraaeU1@mid.uni-berlin.de>
Message-ID: <8a6b8e350710142108y443b2652r6cfab9e039b65d98@mail.gmail.com>

if you want to hardcode the password in the url. What you need to do is
http:username:password at www.passwordprotectedsite.com

On 10/14/07, Diez B. Roggisch <deets at nospam.web.de> wrote:
>
> rodrigo schrieb:
> > I am trying to retrieve a password protected page using:
> >
> > get = urllib.urlopen('http://password.protected.url"').read()
> >
> > While doing this interactively, I'm asked for  the username, then the
> > password at the terminal.
> > Is there any way to do this non-interactively? To hardcode the user/
> > pass into the script so I can get the page automatically?
> >
> > (This is not a cracking attempt, I am trying to retrieve a page I have
> > legitimate access to, just doing it automatically when certain
> > conditions are met.)
>
> Is that HTTP-auth? Then this might help:
>
> http://www.voidspace.org.uk/python/articles/authentication.shtml
>
> BTW, use urllib2.
>
> Diez
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
http://www.goldwatches.com/
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071014/4d1b891b/attachment.html>

From travis.brady at gmail.com  Thu Oct 25 10:21:43 2007
From: travis.brady at gmail.com (Travis Brady)
Date: Thu, 25 Oct 2007 10:21:43 -0400
Subject: delineating by comma where commas inside quotation marks don't
	count
In-Reply-To: <1193278225.923337.217160@k35g2000prh.googlegroups.com>
References: <qJSTi.14839$na2.5524@trndny08>
	<1193278225.923337.217160@k35g2000prh.googlegroups.com>
Message-ID: <fb0734860710250721i2cce9b02ufb716ebb96c0ac2c@mail.gmail.com>

On 10/24/07, Dan Bishop <danb_83 at yahoo.com> wrote:
>
> On Oct 24, 8:56 pm, "Junior" <mlon... at verizon.net> wrote:
> > I want to open a text file for reading and delineate it by comma.  I
> also
> > want any data
> > surrounded by quotation marks that has a comma in it, not to count the
> > commas inside the
> > quotation marks
>
> Use the csv module.
>
> --
>

The csv module is definitely the way to go here as it knows how to handle
commas within text qualifiers (double quotes).  Do something like this:
import csv

reader = csv.reader(open('testfile.txt'))

for ct,row in enumerate(reader):
    print "var2=", row[2]
    if ct>2:
        break

The comma separated list parser in pyparsing is also great for this,
particularly when the input gets dirtier:
http://pyparsing.wikispaces.com/space/showimage/commasep.py

-- 
Travis Brady
http://travisbrady.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/79d3d3fd/attachment.html>

From willshak at 00hvc.rr.com  Thu Oct 11 22:32:16 2007
From: willshak at 00hvc.rr.com (willshak)
Date: Thu, 11 Oct 2007 22:32:16 -0400
Subject: Top 10 Caribbean island destinations
In-Reply-To: <470ed8b0$0$24257$4c368faf@roadrunner.com>
References: <1192137188.121863.212020@19g2000hsx.googlegroups.com>
	<470ed8b0$0$24257$4c368faf@roadrunner.com>
Message-ID: <13gtn5go9k25p56@news.supernews.com>

on 10/11/2007 10:14 PM Audio expert said the following:
> Now I know where NOT to go.
> TOO crowded for me.
>   

No one goes there anymore. It's too crowded.
Lawrence "Yogi" Berra
>
> <arturklis4 at gmail.com> wrote in message 
> news:1192137188.121863.212020 at 19g2000hsx.googlegroups.com...
>   
>> See the most popular Caribbean island destinations
>>
>> http://tropical-destinations.blogspot.com/
>>
>>     
>
>
>   


-- 

Bill
In Hamptonburgh, NY
To email, remove the double zeroes after @


From jcd at sdf.lonestar.org  Mon Oct 29 11:40:43 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 29 Oct 2007 11:40:43 -0400
Subject: two file into a single file
In-Reply-To: <aa405c1f0710290832n51ee019v67fa72eea158c45c@mail.gmail.com>
References: <aa405c1f0710290832n51ee019v67fa72eea158c45c@mail.gmail.com>
Message-ID: <20071029154043.GA3648@sdf.lonestar.org>

You will need to use the open() builtin for each input file, and again for the output file.  Documentation is available in the python tutorial here: 

http://docs.python.org/tut/node9.html#SECTION009200000000000000000

You should read also the whole tutorial, and work with it until you understand it, but for now, that section should get you going.

Cheers,
Cliff


On Mon, Oct 29, 2007 at 09:02:30PM +0530, Beema shafreen wrote regarding two file into a single file:
> Delivered-To: python-list at bag.python.org
> Date: Mon, 29 Oct 2007 21:02:30 +0530
> From: "Beema shafreen" <beema.shafreen at gmail.com>
> To: python-list at python.org
> Subject: two file into a single file
> Precedence: list
> List-Id: General discussion list for the Python programming language
> 	<python-list.python.org>
> List-Unsubscribe: <http://mail.python.org/mailman/listinfo/python-list>,
> 	<mailto:python-list-request at python.org?subject=unsubscribe>
> List-Archive: <http://mail.python.org/pipermail/python-list>
> List-Post: <mailto:python-list at python.org>
> List-Help: <mailto:python-list-request at python.org?subject=help>
> List-Subscribe: <http://mail.python.org/mailman/listinfo/python-list>,
> 	<mailto:python-list-request at python.org?subject=subscribe>
> Errors-To: python-list-bounces+jcd=sdf.lonestar.org at python.org
> 
>    hi everybody,
>                   I have a two file,
>     file 1:
>    100007097
>    100007186
>    10000723
>    100007895
>    100007906
>    100008295
>    100008311
>    10000880
>    100009160
>    100009629
>    file 2:
>    100007097
>    100007186
>    10000723
>    100007895
>    100007906
>    100008295
>    100008311
>    10000880
>    100009160
>    100009629
>    how do i make into a single file......like this
>    file 1             file 2
>    100007097  100007097
>    100007186  100007097
>    100007186   10000880
>    10000723    100007895
>    100007895  100007895
>    100007906  100007895
>    100008295  00008311
>    100008311  1000088

> -- 
> http://mail.python.org/mailman/listinfo/python-list


From goldtech at worldpost.com  Sat Oct  6 23:31:54 2007
From: goldtech at worldpost.com (goldtech)
Date: Sat, 06 Oct 2007 20:31:54 -0700
Subject: How to create a file on users XP desktop
Message-ID: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>

Can anyone link me or explain the following:

I open a file in a python script. I want the new file's location to be
on the user's desktop in a Windows XP environment.  fileHandle = open
(....., 'w' )  what I guess I'm looking for is an environmental
variable that will usually be correct on most XP desktops and will
work in the open statement. Or is there another way?

Thanks



From kyosohma at gmail.com  Mon Oct 29 11:28:50 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 29 Oct 2007 15:28:50 -0000
Subject: while within while
In-Reply-To: <13ibrd9m39oua4e@corp.supernews.com>
References: <mailman.515.1193512303.13605.python-list@python.org>
	<13i88bo9djpu279@corp.supernews.com>
	<mailman.553.1193619733.13605.python-list@python.org>
	<13ibrd9m39oua4e@corp.supernews.com>
Message-ID: <1193671730.506934.81610@v3g2000hsg.googlegroups.com>

On Oct 29, 9:26 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Sun, 28 Oct 2007 21:02:02 -0400, Shawn Minisall wrote:
> > Thanks a lot for your suggestions.  Unfortunately, a lot of the issues
> > brought up were simply the way I was taught by my professor and the way
> > she wants things done,having to use a numbered menu as opposed to
> > entering r, p or s, being taught just to use one main function for the
> > entire program, having to init all variables in the program b4 the
> > actual program starts or else points off for each program, while
> > statements surrounding every input statement for input validation
> > purposes...
>
> > Going beyond those things, would look like someone else wrote my program
> > since we didn't talk about or ever cover them in class.
>
> Haven't you heard of "I've been reading ahead from the text book" or
> "I've been reading discussion groups where they talk about good
> programming techniques"?
>
> Besides, you'll probably find your prof will forgive nearly anything if
> you acknowledge it first: plagiarism is considered a worse sin than
> failing to learn anything. Look up this thread on Google Groups, and
> include the URL in your assignment (you might want to give a TinyURL as
> well), and your prof can see for herself that we're not doing your
> homework for you.
>
> (Hey, chances are that she's googling for your name already...)
>
> Unless the assignment explicitly says "DO NOT SPLIT YOUR CODE INTO
> FUNCTIONS", you shouldn't be marked down for writing better code than you
> were asked for.
>
> On the other hand, if the assignment specifies "YOU MUST DO THIS" then
> naturally you must follow the instructions.
>
> * shakes head sadly *
>
> Kids today, more concerned about following instructions than learning...
>
> * half wink *
>
> --
> Steven

I had a professor who insisted that we not use loops and what-not
before they were taught in class as well. It seems to be a standard
thing in Computer Science classes. Kind of like learning mathematical
proofs or doing standard deviation the long way first. In some ways,
it's very helpful. In others, it's extremely lame.

Typical of the college education system though.

Mike



From sandip.more at gmail.com  Mon Oct 29 23:39:29 2007
From: sandip.more at gmail.com (sandipm)
Date: Mon, 29 Oct 2007 20:39:29 -0700
Subject: python in academics?
Message-ID: <1193715569.261522.219520@i13g2000prf.googlegroups.com>

seeing posts from students on group. I am curious to know, Do they
teach python in academic courses in universities?

in undergrad comp science courses,  We had scheme language as scheme
is neat and beautiful language to learn programming. We learnt other
languages ourselve with basics set right by scheme..



sandip



From lukasz.f24 at gmail.com  Thu Oct 18 04:06:06 2007
From: lukasz.f24 at gmail.com (lukasz.f24 at gmail.com)
Date: Thu, 18 Oct 2007 01:06:06 -0700
Subject: MOD_PYTHON + packages reloading
Message-ID: <1192694766.953529.25270@k35g2000prh.googlegroups.com>

Hello,

I came across annoying problem during my fun with mod_python. I turned
out that mod_python load package only onca and don't care about any
changes to it. Obviously it makes sense on production server but
during development is more then annoying. I find a way to reload my
module:

    m = apache.import_module(name)
    reload(m)

But this solution doesn't satisfy my. Is there any way to use old good
import x.x.x or from x.x.x import y and somehow set mod_python to
autoreload packages? apache.import_module(name,autoreload=1) didn't
work.
What is more interesting if a file is in the same directory (no in the
package) i don't need to wory about reloading, python doesn't cache
it.

Please help me :)



From george.sakkis at gmail.com  Wed Oct  3 14:14:56 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 03 Oct 2007 18:14:56 -0000
Subject: spam kontrol
In-Reply-To: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
Message-ID: <1191435296.523842.160230@g4g2000hsf.googlegroups.com>

On Oct 3, 12:59 pm, "oruc... at gmail.com" <oruc... at gmail.com> wrote:
> hii
> ? think you know spam page is the most pest for net user.

...closely followed in the second position by incoherent misspelled
posts in silly IM-speak.




From bh at izb.knu.ac.kr  Tue Oct 16 22:13:49 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Wed, 17 Oct 2007 11:13:49 +0900
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <471530E3.9090602@gmail.com>
References: <471530E3.9090602@gmail.com>
Message-ID: <1192587229.888.13.camel@viola.izb.knu.ac.kr>

On Tue, 2007-10-16 at 23:45 +0200, stef mientki wrote:
> hello,
> 
> I'm always have great difficulties, replying to this beautiful and 
> helpful list.
> 
> When I hit the reply button,
> the message is sent personally to the sender and not to the list.
> I've subscribed to dozen's of lists,
> and all have an "reply-to" address, that points to list and not to the 
> individual.

Just click "Ctrl-L", then you can reply to lists directly if you use
good mailer like mutt or thunderbird or evolution ;; 

-- 
Byung-Hee HWANG <bh at izb.knu.ac.kr>

"I need a guy I can trust."
"Yeah, OK, let me think about it."
		-- Johnny Fontane and Nino Valenti, "Chapter 12", page 177


From samwyse at gmail.com  Wed Oct 10 10:03:29 2007
From: samwyse at gmail.com (samwyse)
Date: Wed, 10 Oct 2007 07:03:29 -0700
Subject: Symbolic Link
In-Reply-To: <fc2c9q$i1l$5@lust.ihug.co.nz>
References: <1187475296.173269.263080@k79g2000hse.googlegroups.com>
	<iwWxi.28394$RX.20505@newssvr11.news.prodigy.net>
	<1187555373.202634.163160@57g2000hsv.googlegroups.com>
	<1187646982.760523.195750@i38g2000prf.googlegroups.com>
	<mailman.87.1187737527.32294.python-list@python.org>
	<1187879000.370831.118780@j4g2000prf.googlegroups.com>
	<1o1Fi.33230$RX.26068@newssvr11.news.prodigy.net>
	<fc2c9q$i1l$5@lust.ihug.co.nz>
Message-ID: <1192025009.157745.268010@d55g2000hsg.googlegroups.com>

On Sep 9, 10:05 pm, Lawrence D'Oliveiro <l... at geek-
central.gen.new_zealand> wrote:
> In message <1o1Fi.33230$RX.26... at newssvr11.news.prodigy.net>,samwysewrote:
>
> > A hard-link, OTOH, allows
> > direct access to the contents of a file, as long as it is on the same
> > filesystem.  No extra steps are required, so the process runs a few
> > microseconds faster, and directory-level permissions can't get in the way.
>
> Hard links are best avoided, because of the confusion they can cause.

There are reasons to use hard links, there are reasons to use symbolic
links.  Depending on the circumstances, either could "cause confusion"
simply because either could do something other than what's needed.
Here's a handy chart to help decide which is appropriate:
http://publib.boulder.ibm.com/iseries/v5r1/ic2924/index.htm?info/ifs/rzaaxmstlinkcmp.htm



From raims at dot.com  Sat Oct  6 10:04:37 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sat, 6 Oct 2007 16:04:37 +0200
Subject: Cross platform way of finding number of processors on a machine?
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<1i5k9kn.kxih581ipiy0sN%raims@dot.com>
	<1191677166.962158.50350@k79g2000hse.googlegroups.com>
Message-ID: <1i5kjv2.1r2h2vgbi0m6kN%raims@dot.com>

Paul Boddie <paul at boddie.org.uk> wrote:
> From the experiments I've done with pprocess [1], pretending that a
> hyperthreading "virtual CPU" is as good as a real CPU (or CPU core)
> tends to be counter-productive: the performance benefits in moving
> from the utilisation of one to two "virtual CPUs" are virtually non-
> existent.

We came the same conclusion at work. One of my colleagues has a machine
with HyperThreading and he noticed no real performance increase with the
processing library altough on my machine (which is a dual Core 2 Duo)
the performance boost was definitely there :-)

The good side of this is hyperthreading with parallel processes is like
using a mono-CPU machine so we don't have to take into account it like
if it was an entirely different kind of architecture.

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From hniksic at xemacs.org  Thu Oct  4 08:52:50 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 04 Oct 2007 14:52:50 +0200
Subject: migrating to packages
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
	<87hcl7jsn0.fsf@mulj.homelinux.net>
	<4704a3a5$0$5110$426a34cc@news.free.fr>
	<874ph79sw7.fsf@mulj.homelinux.net>
	<4704cfc8$0$15826$426a74cc@news.free.fr>
Message-ID: <87r6kb82jh.fsf@mulj.homelinux.net>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> writes:

>> We agree on that.  It is the OP who *wants* to access his modules
>> directly without ever naming the package.
>
> To be exact, he wants to reorganize it's source code (splitting a
> file that's getting too big AFAICT)

You're right, I misread his original problem statement (as you also
correctly pointed out later in the post).  So yes, a package will do
what he wants, simply by arranging the necessary imports in
__init__.py.  Sorry about the misunderstanding.

>> That is why I think he is missing the point of having a package in
>> the first place.
>
> MHO opinion is that *you* are missing *one* of the point*s* of having
> packages.

:-)


From jelleferinga at gmail.com  Wed Oct 31 11:32:49 2007
From: jelleferinga at gmail.com (jelle feringa)
Date: Wed, 31 Oct 2007 16:32:49 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <37fac3b90710310831xbabb2ddl7d12b87675edc6d9@mail.gmail.com>
References: <loom.20071031T132748-928@post.gmane.org>
	<47289BA8.5000109@tim.thechases.com>
	<37fac3b90710310831xbabb2ddl7d12b87675edc6d9@mail.gmail.com>
Message-ID: <37fac3b90710310832r778776dfi486880fae849a400@mail.gmail.com>

Hi Tim,

Well, I this is another idiom in itself, right?
Your checking if something is part of an iterable.
I'm checking truth before entering a conditional expression.
The latter is considered to be pythonic, right?

-jelle


 On 10/31/07, Tim Chase <python.list at tim.thechases.com> wrote:
>
> > if I check a string for for a substring, and this substring isn't found,
> > should't the .find method return 0 rather than -1?
> > this breaks the
> >
> > if check.find('something'):
> >     do(somethingElse)
> >
> > idiom, which is a bit of a pity I think.
>
> That idiom is spelled:
>
>   if 'something' in check:
>     do(somethingElse)
>
> Unless you really do need to start at a particular offset where
> you use the additional parameters of find(), such as
> find('something', 3, 42).  In that case, you can slice your target:
>
> if 'something' in check[3:42]:
>    do(somethingElse)
>
> The above is untested, so check for fencepost errors, but the
> theory holds.
>
> So pretty much, I'd never consider using find() :)
>
> -tkc
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/400393ba/attachment.html>

From ihatespam at hotmail.com  Mon Oct 22 05:18:54 2007
From: ihatespam at hotmail.com (Just Another Victim of the Ambient Morality)
Date: Mon, 22 Oct 2007 09:18:54 GMT
Subject: Need help parsing with pyparsing...
Message-ID: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>

    I'm trying to parse with pyparsing but the grammar I'm using is somewhat 
unorthodox.  I need to be able to parse something like the following:

UPPER CASE WORDS And Title Like Words

    ...into two sentences:

UPPER CASE WORDS
And Title Like Words

    I'm finding this surprisingly hard to do.  The problem is that pyparsing 
implicitly assumes whitespace are ignorable characters and is (perhaps 
necessarily) greedy with its term matching.  All attempts to do the 
described parsing either fails to parse or incorrectly parses so:

UPPER CASE WORDS A
nd Title Like Words

    Frankly, I'm stuck.  I don't know how to parse this grammar with 
pyparsing.
    Does anyone know how to accomplish what I'm trying to do?
    Thank you...





From duncan.booth at invalid.invalid  Sat Oct 20 09:19:02 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 20 Oct 2007 13:19:02 GMT
Subject: __main__ : What is this?
References: <mailman.234.1192836549.13605.python-list@python.org>
	<1192839982.488484.102860@e34g2000pro.googlegroups.com>
	<op.t0g407o7x6zn5v@gabriel2.softlabbsas.com.ar>
	<mailman.244.1192859156.13605.python-list@python.org>
Message-ID: <Xns99CF91A4555Dduncanbooth@127.0.0.1>

"Matt McCredie" <mccredie at gmail.com> wrote:

> or, as I prefer:
> 
> a = 'c' == b
> 
> It is just habit from writing so much C code that way. In C the
> reasoning is that if you have mistyped it, you will catch the issue at
> compile time instead of runtime (which is potentially much more
> difficult to debug). I'm used to seeing that pattern. In terms of
> natural language I do agree with you. It really is just my _humble_
> opinion. I can't make a huge argument for it in Python. To be honest,
> I didn't give it much thought before I wrote it. I am simply used to
> doing it that way, and being irked whenever I see it written the other
> way in C or C++ (and perhaps unjustifiably Python).

Alternatively you could just tell your C compiler to regard dodgy looking 
assignments as an error and stop worrying about it. Much less hassle all 
round.

e.g. For gcc -Werror -Wparentheses, for Microsoft compiler -W4 -WX, or an 
appropriate #pragma in a header file for each.


From sethia.vishal at gmail.com  Thu Oct  4 15:27:42 2007
From: sethia.vishal at gmail.com (Vishal Sethia)
Date: Thu, 4 Oct 2007 12:27:42 -0700
Subject: Owner of spawned process in threads
Message-ID: <2ee048b40710041227o2ff1c73xdc11910f3591aaad@mail.gmail.com>

Just trying to understand the behaviour of spawn. Consider I have a
function which creates two threads. And in one of the threads I make a
call to pexpect.spawn. spawn would fork and create a new new child In
this case who becomes the owner of this child process.

Is it the thread that spawned becomes the owner or is the main program
becomes the owner of that child process.

Thanks,
-V


From sean at buildingonline.com  Tue Oct 30 20:00:59 2007
From: sean at buildingonline.com (sberry)
Date: Tue, 30 Oct 2007 17:00:59 -0700
Subject: SOAPpy / WSDL help... please
In-Reply-To: <1193785839.266287.37470@k35g2000prh.googlegroups.com>
References: <1193785839.266287.37470@k35g2000prh.googlegroups.com>
Message-ID: <1193788859.594847.184150@t8g2000prg.googlegroups.com>

On Oct 30, 4:10 pm, sberry <s... at buildingonline.com> wrote:
> I have an Adobe InDesign server running that includes a built-in SOAP
> server.  The wsdl is located here:http://www.seanberry.com/IDSP.wsdl.
>
> I have a PHP example that looks like this for calling the SOAP
> function runScriptParameters
>


Sorry, I meant that I was trying to run the SOAP function RunScript...
not runScriptParameters like I posted previously.

Thanks for any help.



From robert.kern at gmail.com  Tue Oct 16 18:17:42 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 16 Oct 2007 17:17:42 -0500
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <471530E3.9090602@gmail.com>
References: <471530E3.9090602@gmail.com>
Message-ID: <ff3dac$t3b$1@ger.gmane.org>

stef mientki wrote:
> hello,
> 
> I'm always have great difficulties, replying to this beautiful and 
> helpful list.
> 
> When I hit the reply button,
> the message is sent personally to the sender and not to the list.
> I've subscribed to dozen's of lists,
> and all have an "reply-to" address, that points to list and not to the 
> individual.

It's not universal. Many people consider it harmful. Google "reply-to considered
harmful" for a variety of opinions, for and against.

I use GMane to read and post to this list because I like my lists to act like
USENET.

  http://gmane.org

-- 
Robert Kern

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



From daniel_nolan at msn.com  Mon Oct 29 01:58:55 2007
From: daniel_nolan at msn.com (daniel_nolan at msn.com)
Date: Sun, 28 Oct 2007 22:58:55 -0700
Subject: IEC - cannot find button
Message-ID: <1193637535.413630.252960@22g2000hsm.googlegroups.com>

I'm brand new to Python--and programming in general. I'm trying to use
IEC to control Internet Explorer. I've navigated to a page, and now
I'm trying to click a button. The button appears to be called 'PDF
Preview' but I honestly do not know whether that's the name or the
caption. Here is my code:

     from win32com.client import Dispatch
     import IEC

     .
     .
     .


     ie = IEC.IEController(window_num = 1)
     ie.Navigate(URL_part_1 + x + URL_part_2)
     ie.ClickButton(name='PDF Preview')

(I've also tried replacing name w/ caption but I get a similar error
message.) I get this error message:

Traceback (most recent call last):
  File "C:\Program Files\Python25\experiment", line 14, in <module>
    ie.ClickButton(name='PDF Preview')
  File "C:\Program Files\Python25\lib\IEC.py", line 126, in
ClickButton
    elem = elemcoll.item(i)
  File "<COMObject <unknown>>", line 3, in item
com_error: (-2147024891, 'Access is denied.', None, None)

I really have no idea how to interpret this. I'm pasting the button
tag below:

<td>
     <input type="button" value="PDF Preview"
onclick="javascript:performPdfPreview(2);"/>
</td>



From Michael.J.Fromberger at Clothing.Dartmouth.EDU  Fri Oct 19 18:12:49 2007
From: Michael.J.Fromberger at Clothing.Dartmouth.EDU (Michael J. Fromberger)
Date: Fri, 19 Oct 2007 18:12:49 -0400
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
Message-ID: <Michael.J.Fromberger-6E3720.18124919102007@localhost>

In article <1192603763.894935.39680 at e34g2000pro.googlegroups.com>,
 Raymond Hettinger <python at rcn.com> wrote:

> [Diez B. Roggisch]
> > > out:) But I wanted a general purpose based solution to be available that
> > > doesn't count on len() working on an arbitrary iterable.
> 
> [Peter Otten]
> > You show signs of a severe case of morbus itertools.
> > I, too, am affected and have not yet fully recovered...
> 
> Maybe you guys were secretly yearning for a magical last element
> detector used like this: [...]


Although there have already been some nice solutions to this problem, 
but I'd like to propose another, which mildly abuses some of the newer 
features of Python  It is perhaps not as concise as the previous 
solutions, nor do I claim it's better; but I thought I'd share it as an 
alternative approach.

Before I affront you with implementation details, here's an example:

| from __future__ import with_statement

| with last_of(enumerate(file('/etc/passwd', 'rU'))) as fp:
|     for pos, line in fp:
|         if fp.marked():
|             print "Last line, #%d = %s" % (pos + 1, line.strip())

In short, last_of comprises a trivial context manager that knows how to 
iterate over its input, and can also indicate that certain elements are 
"marked".  In this case, only the last element is marked.

We could also make the truth value of the context manager indicate the 
marking, as illustrated here:

| with last_of("alphabet soup") as final:
|     for c in final:
|         if final:
|             print "Last character: %s" % c

This is bit artificial, perhaps, but effective enough.  Of course, there 
is really no reason you have to use "with," since we don't really care 
what happens when the object goes out of scope:  You could just as 
easily write:

| end = last_of(xrange(25))
| for x in end:
|   if end:
|     print "Last element: %s" % x

But you could also handle nested context, using "with".  Happily, the 
machinery to do all this is both simple and easily generalized to other 
sorts of "marking" tasks.  For example, we could just as well do 
something special with all the elements that are accepted by a predicate 
function, e.g.,

| def isinteger(obj):
|     return isinstance(obj, (int, long))

| with matching(["a", 1, "b", 2, "c"], isinteger) as m:
|     for elt in m:
|         if m.marked():
|             print '#%s' % elt,
|         else:
|             print '(%s)' % elt,
|
|     print

Now that you've seen the examples, here is an implementation.  The 
"marker" class is an abstract base that does most of the work, with the 
"last_of" and "matching" examples implemented as subclasses:

| class marker (object):
|     """Generate a trivial context manager that flags certain elements
|     in a sequence or iterable.
| 
|     Usage sample:
|       with marker(ITERABLE) as foo:
|         for elt in foo:
|           if foo.marked():
|              print 'this is a marked element'
|           else:
|              print 'this is an unmarked element'
| 
|     Subclass overrides:
|      .next()   -- return the next unconsumed element from the input.
|      .marked() -- return True iff the last element returned is marked.
| 
|     By default, no elements are marked.
|     """
|     def __init__(self, seq):
|         self._seq = iter(seq)
|         try:
|             self._fst = self._seq.next()
|         except StopIteration:
|             self.next = self._empty
| 
|     def _empty(self):
|         raise StopIteration
| 
|     def _iter(self):
|         while True:
|             yield self.next()
|     
|     def next(self):
|         out = self._fst
|         try:
|             self._fst = self._seq.next()
|         except StopIteration:
|             self.next = self._empty
| 
|         return out
|     
|     def marked(self):
|         return False
|     
|     def __iter__(self):
|         return iter(self._iter())
|     
|     def __nonzero__(self):
|         return self.marked()
| 
|     def __enter__(self):
|         return self
| 
|     def __exit__(self, *args):
|         pass

A bit verbose, but uncomplicated apart from the subtlety in handling the 
end case.  Here's last_of, implemented as a subclass:

| class last_of (marker):
|     def __init__(self, seq):
|         super(last_of, self).__init__(seq)
|         self._end = False
|     
|     def next(self):
|         out = super(last_of, self).next()
|         if self.next == self._empty:
|             self._end = True
| 
|         return out
|     
|     def marked(self):
|         return self._end

And finally, matching:

| class matching (marker):
|     def __init__(self, seq, func):
|         super(matching, self).__init__(seq)
|         self._func = func
|         self._mark = False
| 
|     def next(self):
|         out = super(matching, self).next()
|         self._mark = self._func(out)
|         return out
| 
|     def marked(self):
|         return self._mark

Generally speaking, you should only have to override .next() and 
.marked() to make a useful subclass of marker -- and possibly also 
__init__ if you need some additional setup.

Cheers,
-M

-- 
Michael J. Fromberger             | Lecturer, Dept. of Computer Science
http://www.dartmouth.edu/~sting/  | Dartmouth College, Hanover, NH, USA


From mhearne808 at gmail.com  Thu Oct  4 14:32:38 2007
From: mhearne808 at gmail.com (mhearne808[insert-at-sign-here]gmail[insert-dot-here]com)
Date: Thu, 04 Oct 2007 11:32:38 -0700
Subject: Don't understand module search path...
Message-ID: <1191522758.012794.141860@n39g2000hsh.googlegroups.com>

I think I don't understand how the module search path works...

Let's say I have a folders called 'test'.  Underneath it, I create two
more folders called 'foo' and 'bar'.

In 'foo', I create an empty '__init__.py' file, indicating that this
folder is a package 'foo'.  I then create a simple python script
'foo.py' consisting of the following code:

----------------------------
#!/usr/bin/python

def printhello():
    print 'Hello world!'
----------------------------

Then in test/bar, I create 'bar.py' consisting of the following code:
----------------------------
#!/usr/bin/python
import sys
import os
(curpath,thisdir) = os.path.split(os.getcwd())
foopath = os.path.join(curpath,'foo')
sys.path.append(foopath)
print sys.path
os.chdir(os.path.join(os.getcwd(),'..'))
print os.getcwd()
from foo.foo import printhello
----------------------------

When I try to run bar.py, I get the following:

----------------------------
[sys.path search path, including full path to 'foo' folder]
path/to/test
Traceback (most recent call last):
  File "/path/to/test/bar/testfoo.py", line 16, in <module>
from foo.foo import printhello
ImportError: No module named foo
----------------------------

Why?  If 'foo' is in sys.path, shouldn't it appear when I try to
import the foo module from it?  Incidentally, when I move the script
up to 'test' and modify it so that it just says:
----------------------------
#!/usr/bin/python

from foo.foo import printhello
----------------------------

I get no errors.  I don't understand the difference...

Incidentally, my platform info:
Python 2.5.1
Darwin Kernel Version 8.10.1 (Mac OS X)

Help!

--Mike



From mensanator at aol.com  Tue Oct 23 17:12:30 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 23 Oct 2007 14:12:30 -0700
Subject: Anagrams
In-Reply-To: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
Message-ID: <1193173950.629761.182090@t8g2000prg.googlegroups.com>

On Oct 23, 3:21 am, cokofree... at gmail.com wrote:
> This was from a random website I found on practising good programming
> techniques and I thought I'd see what ways people could find to write
> out this example. Below are my two examples (which should work...).
>
> I am merely interested in other techniques people have (without
> resorting to overusage of C modules and such like), just python and
> good computer science techniques.
>
> For the wordlist go to this link <a href="http://codekata.pragprog.com/
> 2007/01/kata_six_anagra.html">Kata Anagrams</a>
> Anyway here are my two examples.
>
> This one uses a dictionary to store prime values of each letter in the
> alphabet and for each line multiple the results of the characters
> (which is unique for each anagram) and add them to a dictionary for
> printing latter.
> <pre>
> def anagram_finder():
>     primeAlpha = {'a':2, 'b':3, 'c':5, 'd':7,'e' : 11, 'f':13, 'g':17,
> 'h':19,        \
>                   'i':23, 'j':29, 'k':31, 'l':37, 'm':41, 'n':43, 'o':
> 47, 'p':53,    \
>                   'q':59, 'r':61, 's':67, 't':71, 'u':73, 'v':79, 'w':
> 83, 'x':89,    \
>                   'y':97, 'z':101}
>     dictAna =  {}
>     file = open ("wordlist.txt", "r")
>     for line in file:
>         value = 1
>         for s in line:
>             if s.lower() in primeAlpha:
>                    value *= primeAlpha[s.lower()]
>         dictAna.setdefault(value, []).append(line.strip())
>     file.close()
>     print "\n".join(['Anagrams are: %s' % (v) for k, v in
> dictAna.items() if len(dictAna[k]) > 1])
> </pre>
>
> My second is a little bit simpler. Each dictionary key is an
> alphabetical ordering of the line in question, so that anagrams will
> appear the same. It will add to the dictionary the new word either in
> an existing key, or create a new one for it.
>
> <pre>
> def anagram_finder():
>     dict = {}
>     file = ('wordlist.txt', 'r')
>     for line in file:
>                 strip_line = line.strip().lower()
>                 sort_line = str(sorted(strip_line))
>                 dict.setdefault(sort_line, []).append(strip_line)
>     file.close()
>     print '\n'.join(['Anagrams are: %s' % (v) for k, v in dict.items()
> if len(dict[k]) > 1])
> </pre>
>
> Comparing them with timeit, they both took around 1 second or so, with
> the first being slightly faster.
>
> What other ways do people think will work (and do mine actually work
> for other people!)

##  I took a somewhat different approach. Instead of in a file,
##  I've got my word list (562456 words) in an MS-Access database.
##  And instead of calculating the signature on the fly, I did it
##  once and added the signature as a second field:
##
##  TABLE CONS_alpha_only_signature_unique
##  --------------------------------------
##  CONS       text      75
##  signature  text      26
##
##  The signature is a 26 character string where each character is
##  the count of occurences of the matching letter. Luckily, in
##  only a single case was there more than 9 occurences of any
##  given letter, which turned not to be a word but a series of
##  words concatenated so I just deleted it from the database
##  (lots of crap in the original word list I used).
##
##  Example:
##
##  CONS     signature
##  aah      20000001000000000000000000 # 'a' occurs twice & 'h' once
##  aahed    20011001000000000000000000
##  aahing   20000011100001000000000000
##  aahs     20000001000000000010000000
##  aaii     20000000200000000000000000
##  aaker    20001000001000000100000000
##  aal      20000000000100000000000000
##  aalborg  21000010000100100100000000
##  aalesund
20011000000101000010100000
##
##  Any words with identical signatures must be anagrams.
##
##  Once this was been set up, I wrote a whole bunch of queries
##  to use this table. I use the normal Access drag and drop
##  design, but the SQL can be extracted from each, so I can
##  simply open the query from Python or I can grab the SQL
##  and build it inside the program. The query
##
##    signatures_anagrams_select_signature
##
##  is hard coded for criteria 9 & 10 and should be cast inside
##  Python so the criteria can be changed dynamically.
##
##
##  QUERY signatures_anagrams_longest
##  ---------------------------------
##  SELECT   Len([CONS]) AS Expr1,
##           Count(Cons_alpha_only_signature_unique.CONS) AS
CountOfCONS,
##           Cons_alpha_only_signature_unique.signature
##  FROM     Cons_alpha_only_signature_unique
##  GROUP BY Len([CONS]),
##           Cons_alpha_only_signature_unique.signature
##  HAVING   (((Count(Cons_alpha_only_signature_unique.CONS))>1))
##  ORDER BY Len([CONS]) DESC ,
##           Count(Cons_alpha_only_signature_unique.CONS) DESC;
##
##  This is why I don't use SQLite3, must have crosstab queries.
##
##  QUERY signatures_anagram_summary
##  --------------------------------
##  TRANSFORM Count(signatures_anagrams_longest.signature) AS
CountOfsignature
##  SELECT    signatures_anagrams_longest.Expr1 AS [length of word]
##  FROM      signatures_anagrams_longest
##  GROUP BY  signatures_anagrams_longest.Expr1
##  PIVOT     signatures_anagrams_longest.CountOfCONS;
##
##
##  QUERY signatures_anagrams_select_signature
##  ------------------------------------------
##  SELECT   Len([CONS]) AS Expr1,
##           Count(Cons_alpha_only_signature_unique.CONS) AS
CountOfCONS,
##           Cons_alpha_only_signature_unique.signature
##  FROM     Cons_alpha_only_signature_unique
##  GROUP BY Len([CONS]),
##           Cons_alpha_only_signature_unique.signature
##  HAVING   (((Len([CONS]))=9) AND
##            ((Count(Cons_alpha_only_signature_unique.CONS))=10))
##  ORDER BY Len([CONS]) DESC ,
##           Count(Cons_alpha_only_signature_unique.CONS) DESC;
##
##  QUERY signatures_lookup_by_anagram_select_signature
##  ---------------------------------------------------
##  SELECT     signatures_anagrams_select_signature.Expr1,
##             signatures_anagrams_select_signature.CountOfCONS,
##             Cons_alpha_only_signature_unique.CONS,
##             Cons_alpha_only_signature_unique.signature
##  FROM       signatures_anagrams_select_signature
##  INNER JOIN Cons_alpha_only_signature_unique
##  ON         signatures_anagrams_select_signature.signature
##             = Cons_alpha_only_signature_unique.signature;
##
##
##  Now it's a simple matter to use the ODBC from Win32 to extract
##  the query output into Python.

import dbi
import odbc

con = odbc.odbc("words")
cursor = con.cursor()

##  This first section grabs the anagram summary. Note that
##  queries act just like tables (as long as they don't have
##  internal dependencies). I read somewhere you can get the
##  field names, but here I put them in by hand.

##cursor.execute("SELECT * FROM signature_anagram_summary")
##
##results = cursor.fetchall()
##
##for i in results:
##  for j in i:
##    print '%4s' % (str(j)),
##  print

##  (if this wraps, each line is 116 characters)
##        2    3    4    5    6    7    8    9   10   11   12   13
14   15   16   17   18   23
##   2  259 None None None None None None None None None None None
None None None None None None
##   3  487  348  218  150  102 None None None None None None None
None None None None None None
##   4 1343  718  398  236  142  101   51   26   25    9    8    3
2 None None None None None
##   5 3182 1424  777  419  274  163  106   83   53   23   20   10
6    4    5    1    3    1
##   6 5887 2314 1051  545  302  170  114   54   43   21   15    6
5    4    4    2 None None
##   7 7321 2251  886  390  151   76   49   37   14    7    5    1
1    1 None None None None
##   8 6993 1505  452  166   47   23    8    6    4    2    2 None
None None None None None None
##   9 5127  830  197   47   17    6 None None    1 None None None
None None None None None None
##  10 2975  328   66    8    2 None None None None None None None
None None None None None None
##  11 1579  100    5    4    2 None None None None None None None
None None None None None None
##  12  781   39    2    1 None None None None None None None None
None None None None None None
##  13  326   11    2 None None None None None None None None None
None None None None None None
##  14  166    2 None None None None None None None None None None
None None None None None None
##  15   91 None    1 None None None None None None None None None
None None None None None None
##  16   60 None None None None None None None None None None None
None None None None None None
##  17   35 None None None None None None None None None None None
None None None None None None
##  18   24 None None None None None None None None None None None
None None None None None None
##  19   11 None None None None None None None None None None None
None None None None None None
##  20    6 None None None None None None None None None None None
None None None None None None
##  21    6 None None None None None None None None None None None
None None None None None None
##  22    4 None None None None None None None None None None None
None None None None None None

##  From the query we have the word size as row header and size of
##  anagram set as column header. The data value is the count of
##  how many different anagram sets match the row/column header.
##
##  For example, there are 7321 different 7-letter signatures that
##  have 2 anagram sets. There is 1 5-letter signature having a
##  23 member anagram set.
##
##  We can then pick any of these, say the single 10 member anagram
##  set of 9-letter words, and query out out the anagrams:

cursor.execute("SELECT * FROM
signatures_lookup_by_anagram_select_signature")
results = cursor.fetchall()
for i in results:
  for j in i:
    print j,
  print

##  9 10 anoretics 10101000100001100111000000
##  9 10 atroscine 10101000100001100111000000
##  9 10 certosina 10101000100001100111000000
##  9 10 creations 10101000100001100111000000
##  9 10 narcotise 10101000100001100111000000
##  9 10 ostracine 10101000100001100111000000
##  9 10 reactions 10101000100001100111000000
##  9 10 secration 10101000100001100111000000
##  9 10 tinoceras 10101000100001100111000000
##  9 10 tricosane 10101000100001100111000000

## Nifty, eh?



From rjack at com  Wed Oct  3 16:53:46 2007
From: rjack at com (rjack)
Date: Wed, 03 Oct 2007 16:53:46 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fe0q7a$e42$1@orkan.itea.ntnu.no>
References: <13frd6vtarbee75@corp.supernews.com>
	<85sl4sqckf.fsf@lola.goethe.zz> <fe0npc$cvq$1@orkan.itea.ntnu.no>
	<85hcl8qaj7.fsf@lola.goethe.zz> <fe0q7a$e42$1@orkan.itea.ntnu.no>
Message-ID: <Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d@insightbb.com>

Webster? WEBSTER. . . ?

Whatever happened to the Oxford English Dictionary ?
Seems to me the English have always spoken the definitive
English. . . that's why they call it ENGLISH.


From rosros-3 at email.it  Thu Oct 25 09:10:24 2007
From: rosros-3 at email.it (news.interbusiness.it)
Date: Thu, 25 Oct 2007 15:10:24 +0200
Subject: Help wanted for opensource project
Message-ID: <ffq4mj$k6$1@carabinieri.cs.interbusiness.it>

I'm looking for Python programmers for an open source project:

http://sourceforge.net/projects/spectrag/

SpectraG is a program to generate, edit and convert gradients. Formats: 
ggr, svg, ... Gradients are used in Inkscape, The Gimp, and are an 
essential tool for graphics. Current Gradient Editors do not support 
generation of gradients by means of formulas.



From Jean-Bernard.jacquet-at-tele-deux-point-fr at invalid.org  Thu Oct  4 04:29:43 2007
From: Jean-Bernard.jacquet-at-tele-deux-point-fr at invalid.org (JBJ)
Date: Thu, 04 Oct 2007 10:29:43 +0200
Subject: Convert on uppercase unaccentent unicode character
References: <4703dfff$0$30966$426a74cc@news.free.fr>	<1191439792.666146.217150@d55g2000hsg.googlegroups.com>
	<Xns99BED1C4FA1CFduncanbooth@127.0.0.1>
	<mailman.1483.1191444874.2658.python-list@python.org>
Message-ID: <4704a38c$0$2769$426a74cc@news.free.fr>

Steve Holden wrote:

> Duncan Booth wrote:
>> timaranz at gmail.com wrote:
>> 
>>> On Oct 4, 7:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
>>> point... at invalid.org> wrote:
>>>> Hi,
>>>> I'am very newbie in Python.
>>>> For the moment I'am trying to convert an unicode character to his
>>>> uppercase unaccented character.
>>>> By example with locale fr_FR:
>>>> a,A,?,? should return A
>>>> o,O,?,? should return O
>>>> ?,? should return ?
>>>> i,I,?,? should return I
>>>>
>>>> Have you some suggestions ?
>>>>
>>>> Thank.
>>> Unicode strings have an upper() method - try that.  I'm think it
>>> should work properly with your locale - it doesn't give the expected
>>> result for me with an english locale.
>>>
>> No, that will uppercase the string, but it doesn't (and shouldn't) strip
>> the accents:
>> 
> I can agree that is doesn't (though I am taking your word for it), but a
> French person will definitely feel it's doing the wrong thing. Upper
> case letters aren't accented in written French.
> 
> regards
>   Steve
http://www.academie-francaise.fr/langue/questions.html#accentuation
Regards


From DustanGroups at gmail.com  Fri Oct 19 07:39:04 2007
From: DustanGroups at gmail.com (Dustan)
Date: Fri, 19 Oct 2007 11:39:04 -0000
Subject: Noob: Loops and the 'else' construct
In-Reply-To: <MPG.218277463f27c68f989715@news.individual.de>
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
	<mailman.196.1192763502.13605.python-list@python.org>
	<MPG.218277463f27c68f989715@news.individual.de>
Message-ID: <1192793944.775832.295350@e9g2000prf.googlegroups.com>

On Oct 19, 3:12 am, Thorsten Kampe <thors... at thorstenkampe.de> wrote:
> So a for/else loop is exactly the same thing as a for loop with the
> else clause outside the loop (except for "break")?

Am I missing something here? It sounds to me like you just described
two identical constructs.

> Guess that's why I
> never used that...
>
> Thorsten




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct 30 05:22:58 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 10:22:58 +0100
Subject: A Python 3000 Question
In-Reply-To: <fg5j5p$a3t$1@solaris.cc.vt.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu> <87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu>
Message-ID: <4726f7ec$0$14478$426a74cc@news.free.fr>

brad a ?crit :
> Rob Wolfe wrote:
> 
>> I wonder why people always complain about `len` function but never
>> about `iter` or `pprint.pprint`? :)
> 
> Not complaining. len is simple and understandable and IMO fits nicely 
> with split(), strip(), etc... that's why I used it as an example, but 
> list(), etc. could be used as examples as well:
> 
> a_string.list() instead of list(a_string)

Oh, fine. And a_string.tuple(), a_string.int(), a_string.this(), 
a_string.that() etc ?

In case you don't know, list is a type, not a function !-)

>> And to answer the question. In OO programming generic functions
>> are no less important than classes and objects.
> 
> Do they not take away from the OOness of the overall language

Why so ?

> and 
> introduce inconsistencies?

The monotonic approach to callables in Python (I mean: functions are 
callable objects, classes are callable objects, so instanciation and 
function call have the exact same syntax - which let you decouple 
interface from implementation) is another way to be consistent. because 
you can switch from type to factory function (or from closure to 
callable object, etc) back and forth without breaking client code.


From craig.howard at earthlink.net  Fri Oct  5 05:38:05 2007
From: craig.howard at earthlink.net (Craig Howard)
Date: Fri, 5 Oct 2007 05:38:05 -0400
Subject: unit testing
In-Reply-To: <fe3dcd$8s2$1@solaris.cc.vt.edu>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
Message-ID: <0E2EFA65-B6A6-4CF4-AB31-05AAD66C1666@earthlink.net>


On Oct 4, 2007, at 3:02 PM, brad wrote:

> Does anyone else feel that unittesting is too much work? Not in  
> general,
> just the official unittest module for small to medium sized projects?
>
> It seems easier to write some quick methods that are used when needed
> rather than building a program with integrated unittesting. I see the
> value of it (the official unittest that is)... especially when  
> there's a
> lot of source code. But this...
>
> if len(x) != y:
>     sys.exit('...')
>
> is a hell of a lot easier and quicker that subclassing  
> unittest.TestCase
> on small projects :)
>
> Do others do their own "informal" unit testing?
>
> Just curious,
>
> Brad
> -- 
> http://mail.python.org/mailman/listinfo/python-list

Brad:

If the program is more than 100 lines or is a critical system, I  
write a unit test. I hate asking myself, "Did I break something?"  
every time I decide to refactor a small section of code. For  
instance, I wrote an alarm system in Python for a water treatment  
plant. If the chlorine, pH, or turbidity are out of spec, an email  
message is sent to the plant operator's pager. Because of the nature  
of the alarm system, extensive field testing was out of the question.  
Unit testing was the only way to ensure it worked without disrupting  
the plant operation.

Craig



From seungchan.oh at gmail.com  Fri Oct 12 11:32:39 2007
From: seungchan.oh at gmail.com (seungchan.oh at gmail.com)
Date: Fri, 12 Oct 2007 08:32:39 -0700
Subject: Simple question about python logic.
Message-ID: <1192203159.292973.204470@v23g2000prn.googlegroups.com>

I have a file containing following data. But the dimension can be
different.

A B C D E F G
3 4 1 5 6 2 4
7 2 4 1 6 9 3
3 4 1 5 6 2 4
7 2 4 1 6 9 3
.
.
.
.

What is the best approach to make a column vector with the name such
as A B, etc?



From foo at bar.biz  Tue Oct  9 16:32:33 2007
From: foo at bar.biz (.)
Date: 09 Oct 2007 20:32:33 GMT
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<1191957606.187050.272820@v3g2000hsg.googlegroups.com>
Message-ID: <470be561$0$24270$4c368faf@roadrunner.com>

On Tue, 09 Oct 2007 19:20:06 +0000, gnuist006 wrote:

> On Oct 8, 11:09 pm, "." <f... at bar.biz> wrote:
>> On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:
> 
>>
>> > Can anyone explain:
>>
>> > (1) its origin
>>
>> One of the lambda papers, I think.  I don't remember which.
> 
> Hey no-name "dot" you are the only one who says its origin is in
> one of the old lambda papers. Give me a reference or someone
> give me a reference. I dont have access to any ACM journals or
> other conferences. So

I said "I think."  Matthias corrected me.  They're all on readscheme.org
( http://library.readscheme.org/page1.html ) though, and well worth
reading.

I note that I'm being mocked for not using my real name by someone not
using his/her real name.  Thank you, no-name gnuist006, you make me laugh.


From paul at boddie.org.uk  Wed Oct 24 08:25:50 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Wed, 24 Oct 2007 05:25:50 -0700
Subject: building a linux executable
In-Reply-To: <5o8rl3Flhd8uU1@mid.individual.net>
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
Message-ID: <1193228750.497591.202330@y27g2000pre.googlegroups.com>

On 24 Okt, 14:20, Bjoern Schliessmann <usenet-
mail-0306.20.chr0n... at spamgourmet.com> wrote:
>
> I'm sorry I cannot help, but how many linux distros have no python
> installed or no packages of it?

It's not usually the absence of Python that's the problem. What if
your application uses various extension modules which in turn rely on
various libraries (of the .so or .a kind)? It may be more convenient
to bundle all these libraries instead of working out the package
dependencies for all the target distributions, even if you know them
all.

Paul



From michele.simionato at gmail.com  Mon Oct  8 00:58:36 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Mon, 08 Oct 2007 04:58:36 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191795246.297622.88170@y42g2000hsy.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191771096.541915.247650@k79g2000hse.googlegroups.com>
	<1191774244.572607.259510@o3g2000hsb.googlegroups.com>
	<1191795246.297622.88170@y42g2000hsy.googlegroups.com>
Message-ID: <1191819516.274556.157500@d55g2000hsg.googlegroups.com>

On Oct 7, 6:14 pm, Istvan Albert <istvan.alb... at gmail.com> wrote:
> On Oct 7, 12:24 pm, Michele Simionato <michele.simion... at gmail.com>
> wrote:
>
> > Here we disagree: I think that a programmer should know what he
> > is using.
>
> My point was that they should not *need* to know. Too much information
> can be detrimental.


Actually, in principle I *do* agree with you. For instance,
when I type 1+1, I have no idea of what exactly Python is
doing, but I don't need to know, because adding two integers
is a problem which is well understood and has been solved by
others years ago, I don't need to care about it. I wait with
impatience the time when Web programming will become a solved
problem with a standard built-in solution that works.
Unfortunately, that time is not near in the future and for the
moment I am forced to know how all the pieces work if I want to
build a reliable application. I don't like it, since I am not
particularly interested in the low levels and in the plumbings
myself, but this is the way it is.
> ... truth to
> be told I was just curious of how they would go about integrating a
> database and still keep it "pluggable".
>
> Because it would either need to know about the way the server handles
> the database connections (which makes it application specific) or it
> has to create new database connections in which case it would be
> duplicating the functionality leading to all kinds of headaches.
>
> So there, even a simple requirement exposes the fallacy of building
> anything complex out of "pluggable" components.

I suppose Beaker rely on SQLAlchemy since it comes from the
same mind, but I don't see the issue: a component may well
depend from another one, partially or totally, but this
does not detract at all from the usefulness of the component
approach. If I don't need persistent on a database, for instance,
I like to have the choice between a full-fledged component
and a poor man component that satisfies my basic requirements
and nothing more. I don't want to be forced to use a
monolithic-good-for-everybody solution.

            Michele Simionato



From deets at nospam.web.de  Mon Oct 22 06:47:18 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 12:47:18 +0200
Subject: Failure to connect in SimpleXMLRPCServer/xmlrpclib
References: <1193034835.803633.121600@z24g2000prh.googlegroups.com>
	<5o34stFkiv5sU1@mid.uni-berlin.de>
	<1193045401.857790.307960@v29g2000prd.googlegroups.com>
Message-ID: <5o3ddmFkh9a6U3@mid.uni-berlin.de>

>> Maybe using the IP-address helps?
>>
>> Diez- Hide quoted text -
>>
>> - Show quoted text -
> 
> No, that doesn't help either.
> May be I don't use it right.
> I tried "http://1.2.3.4:8000"
> and
> r"http://\\1.2.3.4:8000"
> 
> with no success.

The former should work. The latter is Windows-name-style and has nothing to
do here.

I'm not a windows-user, but there should be ways to determine which program
listens to which port on a machine.

And a common problem is that servers listen on 127.0.0.1 instead of the
ethernet interface. 

Try putting the server's IP as argument to the listening XMLRPC-server, and
check with the windows-netstat-equivalent if it works out.

Diez


From trekker182 at comcast.net  Sat Oct 27 15:20:39 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Sat, 27 Oct 2007 15:20:39 -0400
Subject: while within while
Message-ID: <47238F87.2010808@comcast.net>

K I've since fixed the UnboundLocalError: local variable 'ai' referenced 
before assignment error, I forgot to include decision = (1, 2, 3) inside 
" " for each number.

Now when I run it, I get this..

 >>> main()
READY TO PLAY ROCK, PAPER, SCISSORS???

Please choose from the following menu:
1. See the rules
2. Play against the computer
3. Play a two player game
4. Exit
Please enter your choice here: 2

=====================
you choose scissors

I choose

YOU LOSE!

Rounds Won:  0

Rounds Lost:  1

Rounds Tied:  0


Would you like to play again? y
Please choose from the following menu:
1. See the rules
2. Play against the computer
3. Play a two player game
4. Exit
Please enter your choice here: 2

Please choose a weapon from the following menu:
1. Rock
2. Paper
3. Scissors
Please choose a weapon: 1

and then the weapon submenu repeats over and over.

It's also like the program is ignoring

                if ai == "1":
                    ai = "rock"
                if ai == "2":
                    ai = "paper"
                if ai == "3":
                    ai = "scissors"

since it says I choose ________ 



From steve at holdenweb.com  Fri Oct  5 07:37:34 2007
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 05 Oct 2007 07:37:34 -0400
Subject: module confusion
In-Reply-To: <13gc6alr30la682@corp.supernews.com>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>
	<13g9ch1fi5c7se5@corp.supernews.com>	<fe2dl2$4i7$3@lust.ihug.co.nz>
	<13gasot6r5bnu1a@corp.supernews.com>	<fe3svd$2nb$3@lust.ihug.co.nz>	<mailman.1557.1191561184.2658.python-list@python.org>
	<13gc6alr30la682@corp.supernews.com>
Message-ID: <fe57lt$3hb$1@sea.gmane.org>

Steven D'Aprano wrote:
> On Fri, 05 Oct 2007 00:12:33 -0500, Robert Kern wrote:
> 
>> This is somewhat odd, because most modules aren't exposed that way. They
>> are either in their own file and accessed by importing them directly, or
>> they are inside a package.
> 
> Any time you say:
> 
> import parrot
> 
> 
> in one of your modules, you export parrot to anything that 

subsequently

>                                                              imports your 
> module. (Unless you take specific steps to prevent it, for instance with 
> del parrot.)

or the creation of an __all__ containing an exclusive list of names for 
export.
> 
> 
> Just to pick some random examples:
> 
>>>> import ConfigParser, base64, fileinput
>>>> ConfigParser.re
> <module 're' from '/usr/lib/python2.5/re.pyc'>
>>>> base64.struct
> <module 'struct' from '/usr/lib/python2.5/struct.pyc'>
>>>> base64.binascii
> <module 'binascii' from '/usr/lib/python2.5/lib-dynload/binascii.so'>
>>>> fileinput.sys
> <module 'sys' (built-in)>
>>>> fileinput.os
> <module 'os' from '/usr/lib/python2.5/os.pyc'>
> 
> 
> It's quite common.
> 
> 
OK, I am sort of getting used to the idea that you guys are going to 
beat this one to death with a stick, and will still be tossing emails 
back and forth to each other while the rest of us are admiring the heat 
death of the universe.

So please try and avoid writing anything that will be misconstrued by 
newless cloobs unfortunate enough to reach this thread as a result of a 
search for meaningful information on Python imports.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From __peter__ at web.de  Mon Oct  8 13:03:13 2007
From: __peter__ at web.de (Peter Otten)
Date: Mon, 8 Oct 2007 19:03:13 +0200
Subject: [OT] Re: Variable scoping rules in Python?
References: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
Message-ID: <fednsh$id1$03$1@news.t-online.com>

joshua.davies wrote:

> Ok, I'm relatively new to Python (coming from C, C++ and Java).  I'm
> working on a program that outputs text that may be arbitrarily long,
> but should still line up, so I want to split the output on a specific
> column boundary.  Since I might want to change the length of a column,
> I tried defining the column as a constant (what I would have made a
> "#define" in C, or a "static final" in Java).  I defined this at the
> top level (not within a def), and I reference it inside a function.
> Like this:
> 
> COLUMNS = 80
> 
> def doSomethindAndOutputIt( ):
>   ...
>   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
>     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     ..
> 
> etc. etc.  It works fine, and splits the output on the 80-column
> boundary just like I want.

Just in case it's not intentional: You'll lose every 80th character as
python intervals do not include the upper bound. The same problem
affects the for loop -- e. g. when output[0] has less than COLUMNS
columns nothing is printed:

>>> range(0, 79/80)
[]

Peter


From paul at boddie.org.uk  Fri Oct 26 14:42:06 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Fri, 26 Oct 2007 11:42:06 -0700
Subject: "Standard" Full Text Search Engine
In-Reply-To: <7xy7dp233g.fsf@ruckus.brouhaha.com>
References: <mailman.475.1193402986.13605.python-list@python.org>
	<7xy7dp233g.fsf@ruckus.brouhaha.com>
Message-ID: <1193424126.688154.144670@19g2000hsx.googlegroups.com>

On 26 Okt, 19:33, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
>
> Ferret is basically a Lucene clone, originally written in Ruby but
> with the intensive parts later rewritten in C for speed since the Ruby
> version was too slow.  There was something similar done in Python
> (PyLucene, I think) that was also pretty slow.

You're thinking of Lupy, whose authors/supporters then seemed to
switch to Xapian:

http://www.divmod.org/projects/lupy

Meanwhile, PyLucene doesn't seem particularly slow to me. Provided you
can build the software (it requires gcj), it seems to work rapidly and
reliably - the only problem I've ever had was related to a threading
bug in Python 2.3 which was subsequently fixed by the Python core
developers.

Paul



From george.sakkis at gmail.com  Sun Oct  7 14:44:56 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Sun, 07 Oct 2007 18:44:56 -0000
Subject: Problem of Readability of Python
In-Reply-To: <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
Message-ID: <1191782696.538929.289770@22g2000hsm.googlegroups.com>

On Oct 7, 2:14 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> Licheng Fang wrote:
> > Python is supposed to be readable, but after programming in Python for
> > a while I find my Python programs can be more obfuscated than their C/C
> > ++ counterparts sometimes. Part of the reason is that with
> > heterogeneous lists/tuples at hand, I tend to stuff many things into
> > the list and *assume* a structure of the list or tuple, instead of
> > declaring them explicitly as one will do with C structs. So, what used
> > to be
>
> > struct nameval {
> >     char * name;
> >    int val;
> > } a;
>
> > a.name = ...
> > a.val = ...
>
> > becomes cryptic
>
> > a[0] = ...
> > a[1] = ...
>
> > Python Tutorial says an empty class can be used to do this. But if
> > namespaces are implemented as dicts, wouldn't it incur much overhead
> > if one defines empty classes as such for some very frequently used
> > data structures of the program?
>
> > Any elegant solutions?
>
> You can use __slots__ to make objects consume less memory and have
> slightly better attribute-access performance. Classes for objects that
> need such performance tweaks should start like::
>
>      class A(object):
>          __slots__ = 'name', 'val'
>
> The recipe below fills in the obvious __init__ method for such classes
> so that the above is pretty much all you need to write:
>
>      http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502237
>
> STeVe

For immutable records, you may also want to check out the named tuples
recipe: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/500261

George



From lew at lewscanon.com  Mon Oct 22 12:19:05 2007
From: lew at lewscanon.com (Lew)
Date: Mon, 22 Oct 2007 12:19:05 -0400
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
Message-ID: <O7Sdnegv-qzkUIHanZ2dnUVZ_tWtnZ2d@comcast.com>

Xah Lee <xah at xahlee.org> wrote:
>> 4. Inargurated a massive collection of documents that are invalid
>> HTML. (due to the programing moron's ingorance and need to idolize a
>> leader, and TeX's inherent problem of being a typesetting system that
>> is unsuitable of representing any structure or semantics)

There's something a little fey about someone calling out a "programing [sic] 
moron's ingorance [sic]" and then devolving right into blue speech.

I think Xah Lee should look into:
<http://en.wikipedia.org/wiki/Psychological_projection>

-- 
Lew


From steve at holdenweb.com  Thu Oct  4 08:56:04 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 08:56:04 -0400
Subject: Program with wx in Linux and Windows
In-Reply-To: <fe2ii3$4ac$1@aioe.org>
References: <fe2ii3$4ac$1@aioe.org>
Message-ID: <fe2nt0$9c1$1@sea.gmane.org>

marcpp wrote:
> Hi I've developed a program (WXpython GUI). In Linux the GUI is correct 
> (various distributions), but in Windows all appears disordered.
> Any recomendations?

A slightly unhelpful one might be "learn to use sizers", as they are the 
key to ordered layouts. Unfortunately the learning materials available 
aren't for everyone (to the extent that I am considering producing some 
more).

But with sizers you can certainly ease cross-platform issues considerably.

If you have an existing interface layout you might want to try just 
dropping all the components into a GridSizer to start with, then add 
more layout sophistication as you get into it.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From jjl at pobox.com  Thu Oct 11 15:25:16 2007
From: jjl at pobox.com (John J. Lee)
Date: Thu, 11 Oct 2007 19:25:16 GMT
Subject: Finding Peoples' Names in Files
References: <felf4g$q8c$1@solaris.cc.vt.edu>
Message-ID: <87wstt78tf.fsf@pobox.com>

brad <byte8bits at gmail.com> writes:

> Crazy question, but has anyone attempted this or seen Python code that
> does? For example, if a text file contained 'Guido' and or 'Robert'
> and or 'Susan', then we should return True, otherwise return False.

A few ideas:

1. If you don't have a list of names, find a list of words that
doesn't contain proper nouns (there are a few word lists out there,
not sure if any exclude people's names, though).  Look for short runs
of two or three "words" (punctuation-separated tokens) in the email
that aren't in the dictionary.  Some of them will be people's names.

2. Send the text through Google translate and look for runs of words
that are unchanged.  Some of them will be people's names.

3. Search the literature and look for fancy algorithms.  Here are some
papers (the last mentions some commercial software to do this):

http://citeseer.ist.psu.edu/bikel99algorithm.html

http://citeseer.ist.psu.edu/618945.html

http://arxiv.org/html/cmp-lg/9706017


John


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Oct 11 12:18:59 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 11 Oct 2007 18:18:59 +0200
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<mailman.31.1192033699.927.python-list@python.org>
	<5n4t2vFgajr3U1@mid.individual.net>
	<rqCdnRrKrolY25DanZ2dnUVZ_gadnZ2d@comcast.com>
Message-ID: <5n70njFgjdo3U2@mid.individual.net>

Steven Bethard wrote:
> Actually, your posting just used dicts normally.
> 
> Kevin is creating a prototype dict with a certain set of keys, and
> then copying that dict and filling in the keys each time he
> creates a new instance.  It's basically a poor man's OOP.

And operatively, IMHO, there is no difference. 

Regards,


Bj?rn

-- 
BOFH excuse #176:

vapors from evaporating sticky-note adhesives



From paul.hankin at gmail.com  Fri Oct  5 05:34:53 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Fri, 05 Oct 2007 09:34:53 -0000
Subject: Strange generator problem
In-Reply-To: <aac13$470602b1$54298df6$10176@news2.tudelft.nl>
References: <aac13$470602b1$54298df6$10176@news2.tudelft.nl>
Message-ID: <1191576893.725144.185090@y42g2000hsy.googlegroups.com>

On Oct 5, 10:23 am, Joost Cassee <jo... at cassee.net> wrote:
> Hello all,
>
> I bumped into an unexpected problem using generators. Consider this code:
>
> def test(s):
>     return _test([], [], s)
> def _test(s1, s2, s):
>     if s:
>         s1.append(s.pop())
>         for x in _test(s1, s2, s):
>             yield x
>         s2.append(s1.pop())
>         for x in _test(s1, s2, s):
>             yield x
>         s.append(s2.pop())
>     else:
>         yield s1, s2

Lists aren't copied when they're yielded, so you're returning the same
lists (with different elements) each time. Your final list looks like
[(s1, s2), (s1, s2), ...] and as it happens, s1 and s2 are both [] by
the end.

You can fix it by copying the lists manually before yielding them, or
using a better sub-list algorithm :)

--
Paul Hankin



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Mon Oct 15 18:27:16 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Tue, 16 Oct 2007 00:27:16 +0200
Subject: Normalize a polish L
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<MPG.217dbfcba9423866989713@news.individual.de>
Message-ID: <5ni7q4Fi0k1tU2@mid.individual.net>

Thorsten Kampe wrote:

> The 'L' is actually pronounced like the English "w"...

'?' originally comes from "L" (<http://en.wikipedia.org/wiki/?>) and
is AFAIK transcribed so. 

Also, a friend of mine writes himself "Lukas" (pronounced L-) even
though in Polish his name is ?ukas (short Wh-).

Regards,


Bj?rn

-- 
BOFH excuse #126:

it has Intel Inside



From marco at sferacarta.com  Tue Oct 23 14:04:25 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Tue, 23 Oct 2007 20:04:25 +0200
Subject: Iteration for Factorials
In-Reply-To: <1193160794.433684.245150@v29g2000prd.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193080349.610343.95430@v23g2000prn.googlegroups.com>
	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>
	<mailman.344.1193084287.13605.python-list@python.org>
	<1193089836.219692.117420@q5g2000prf.googlegroups.com>
	<mailman.349.1193092818.13605.python-list@python.org>
	<cqkTi.977$BB6.524@tornado.fastwebnet.it>
	<1193160794.433684.245150@v29g2000prd.googlegroups.com>
Message-ID: <HIqTi.1638$BB6.865@tornado.fastwebnet.it>

mensanator at aol.com wrote:

> Needs work.

Uh... ok.. this one gives an exception ;-)


def fact(n):
     try:
         return eval('*'.join(str(x) for x in range(1,n+1)))
     except:
         return n>=0 or ValueError



print fact(-1)
<type 'exceptions.ValueError'>


From zzbbaadd at aol.com  Tue Oct 23 23:11:33 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Tue, 23 Oct 2007 20:11:33 -0700
Subject: Python Windows Installation
Message-ID: <1193195493.086681.40570@t8g2000prg.googlegroups.com>

I am trying to install Python 2.5 on Windows XP. It installs into the
root directory on C:\ instead of C:\Python25 which it shows by default
as what it plans to install to. Selecting D:\Python25 on a previous
iteration put the exe in D:\ and did not create a Python25 directory.
On the most recent iteration, when requesting an install to D:
\Python25  it appears to have put files on C:\.  I am installing on
Windows XP Professional. When it asks me for whether I want to install
for all users or just me, I select just me. I do not have admin rights
on the machine.



From ells.david at gmail.com  Tue Oct  2 11:16:41 2007
From: ells.david at gmail.com (David Ells)
Date: Tue, 02 Oct 2007 15:16:41 -0000
Subject: Question on overriding implicit lookups
Message-ID: <1191338201.762723.72750@22g2000hsm.googlegroups.com>

In Python we have a wonderful facility for customizing attribute
access by defining __getattr__ or __getattribute__ in our classes.
Unfortunately (or perhaps fortunately, for reasons I don't know), this
facility only works for explicit attribute access, i.e. accessing
foo.bar. What I am in need of, for reasons I'll keep out of the
discussion for now, is a similar facility for implicit attribute
access, such as the call to foo.__len__ when something like len(foo)
is executed. I would like some way to customize access during these
implicit lookups without having to define each one in the class
myself. Essentially what I am looking for is a mechanism like
__getattribute__, only one that will work for these implicit lookups
to functions like __len__, __str__, __getitem__, and so on. Hopefully
my question makes sense.



From jcd at sdf.lonestar.org  Sat Oct 27 16:36:52 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Sat, 27 Oct 2007 16:36:52 -0400
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <5ohjojFmgu6mU7@mid.uni-berlin.de>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>	<1193438763.190428.134710@q5g2000prf.googlegroups.com>	<87tzodii6i.fsf@benfinney.id.au>	<1193494184.618613.81090@50g2000hsm.googlegroups.com>	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>	<1193501811.620522.261570@o80g2000hse.googlegroups.com>	<mailman.514.1193509692.13605.python-list@python.org>
	<5ohjojFmgu6mU7@mid.uni-berlin.de>
Message-ID: <4723A164.60908@sdf.lonestar.org>

Marc 'BlackJack' Rintsch wrote:
> On Sat, 27 Oct 2007 13:28:02 -0500, Tim Chase wrote:
>
>   
>>>> Even clearer is not to allow octal literals :) Is there *any* use for
>>>> them?
>>>>         
>>> The mode argument to os.chmod.
>>>       
>> You mean instead of
>>
>>   import this
>>   os.chmod(filename, os.R_OK | os.W_OK | os.X_OK)
>>
>> which explicitly (rather than implicitly) spells it out?
>>     
>
> And the equivalent of ``os.chmod(filename, 0777)`` looks like what!?
>
> Ciao,
> 	Marc 'BlackJack' Rintsch
>   
Ugly.

But is one function in one library, which doesn't even exist in one of
the major operating systems really worth its own syntactic construct in
the language?  It seems that it would be fairly simple for python to
treat the octal argument as a string, rather than an int:

os.chmod(filename, "777")

If somebody had a good *general* use for octal, it might be worth having
in the language.  Otherwise, it seems like an unused which is only kept
around because it used to get played with.  (back in the days of six bit
hardware?)

Cheers,
Cliff
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071027/412b8ec1/attachment.html>

From gagsl-py2 at yahoo.com.ar  Tue Oct 30 22:07:10 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 23:07:10 -0300
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<Xns99D893230B22Cduncanbooth@127.0.0.1>
	<mailman.597.1193681389.13605.python-list@python.org>
	<Xns99D8BEA87A5Aduncanbooth@127.0.0.1>
	<mailman.602.1193691547.13605.python-list@python.org>
	<Xns99D8DA24822D1duncanbooth@127.0.0.1>
Message-ID: <op.t01hh8rrx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 14:43:48 -0300, Duncan Booth  
<duncan.booth at invalid.invalid> escribi?:

> "J. Clifford Dyer" <jcd at sdf.lonestar.org> wrote:
>
>>> >>> help(int)
>>> Help on class int in module __builtin__:
>>>
>>> class int(object)
>>>  |  int(x[, base]) -> integer
>>> ...
>>>
>> OK, good point.  Perhaps it's not so specific as the type, but
>> certainly the use of name and x in the docstrings listed above only
>> imply something about the character of the argument, not the name of
>> the argument itself, which is what I was trying to get at.  Help
>> documentation for keyword arguments usually shows the argument being
>> used as a keyword, like the example from __import__ above.
>
> Usually, but not in the second example I gave:
>
>>>> int(base=12, x='42')
> 50

So one can conclude that, unfortunately, there is no way to tell from the  
docs alone whether a certain function will accept keyword arguments or  
not. Too bad :(

-- 
Gabriel Genellina



From deets at nospam.web.de  Thu Oct 18 11:14:51 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 17:14:51 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
Message-ID: <5npbjbFio7g9U1@mid.uni-berlin.de>

Abandoned wrote:

> Thanks you all answer..
> But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
> (100.000 elements)
> Is there any easy alternative ?

How big? How slow? For me, a 10000-element list takes  0.04 seconds to be
parsed. Which I find fast.

Diez


From carsten at uniqsys.com  Mon Oct  1 19:40:25 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 19:40:25 -0400
Subject: Question about quoting style.
In-Reply-To: <fdrr61$ipf$1@daisy.noc.ucla.edu>
References: <mailman.1366.1191268378.2658.python-list@python.org>
	<470153d9$0$27239$426a74cc@news.free.fr>
	<fdrr61$ipf$1@daisy.noc.ucla.edu>
Message-ID: <1191282025.3412.4.camel@localhost.localdomain>

On Mon, 2007-10-01 at 15:10 -0700, James Stroud wrote:
> Bruno Desthuilliers wrote:
> > First point is that Python has no "variable interpolation".
> 
> If you squint, it kind of does*:
> 
>     >>> print '%(language)s has %(#)03d quote types.' % \
>               {'language': "Python", "#": 2}
>     Python has 002 quote types.
> 
> You might think if the dict as a name space and the formatting operation 
> as performing interpolation--but this take on formatting might be a stretch.

It looks even more like interpolation if you do it like this:

>>> language = "Python"
>>> num = 2
>>> print '%(language)s has %(num)03d quote types.' % locals()
Python has 002 quote types.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From jstroud at mbi.ucla.edu  Sun Oct 21 15:15:20 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 21 Oct 2007 12:15:20 -0700
Subject: what is the difference between the two kinds of brackets?
In-Reply-To: <mailman.276.1192948511.13605.python-list@python.org>
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>	<1192898800.059965.272700@q3g2000prf.googlegroups.com>
	<mailman.276.1192948511.13605.python-list@python.org>
Message-ID: <VsNSi.9044$sm6.7123@nlpi069.nbdc.sbc.com>

Hendrik van Rooyen wrote:
> "Paul Hankin" <pa....mail.com> wrote:
> 
>> If everything else is equal, use tuples.
> 
> Interesting point of view - mine is just the opposite.
> 
> I wonder if its the philosophical difference between:
> 
> "Anything not expressly allowed is forbidden"
> 
> and
> 
> "Anything not expressly forbidden is allowed"  ?
> 
> - Hendrik
> 

The latter is how I interpret any religious moral code--life is a lot 
more fun that way. Maybe that percolates to how I use python?

James

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

http://www.jamesstroud.com


From trekker182 at gmail.com  Wed Oct 10 16:29:21 2007
From: trekker182 at gmail.com (Shawn Minisall)
Date: Wed, 10 Oct 2007 16:29:21 -0400
Subject: if then elif
Message-ID: <470D3621.4070900@gmail.com>

I just learned about if, then elif statements and wrote this program.  
The problem is, it's displaying all of the possibilities even after you 
enter a 0, or if the fat grams are more then the total number of 
calories , that is supposed to stop the program instead of continuing on 
with the print statements that don't apply.  Any idea's?  thanks

    #Prompt for calories
    cal = input("Please enter the number of calories in your food: ")

    #Prompt for fat
    fat = input("Please enter the number of fat grams in your food: ")

    #Input validation
    if cal or fat <= 0:
       #Display message
        print "Error.  The number of calories and/or fat grams must be 
positive"
        print

    else:
    #Calculate calories from fat
        calfat = float(fat) * 9
       
    #Calculate number of calories from fat
        caldel = calfat / cal
 
    #change calcent decimal to percentage
        calcent = caldel * 100

    if calfat > cal:
        print "The calories or fat grams were incorrectly entered."

    else:
    #evaluate input
        if caldel <= .3:
            print "Your food is low in fat."
        elif caldel >= .3:
            print "Your food is high in fat."

    #Display percentage of calories from fat
        print "The percentage of calories from fat in your food is %", 
calcent

Here's an example of the output...

Please enter the number of calories in your food: 50
Please enter the number of fat grams in your food: 30
Error.  The number of calories and/or fat grams must be positive

Your food is low in fat.
The percentage of calories from fat in your food is % 0.0

It was supposed to print The calories or fat grams were incorrectly 
entered since the calories from fat was greater then the total number of 
calories.


From ptmcg at austin.rr.com  Fri Oct 12 02:07:58 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Thu, 11 Oct 2007 23:07:58 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
Message-ID: <1192169278.464170.214930@e34g2000pro.googlegroups.com>

On Oct 11, 11:50 pm, John Nagle <na... at animats.com> wrote:
>
>     If anyone has a first-rate address parser in Python that will cover
> most of the developed world, I'd like to talk to them.
>
>                                 John Nagle
>                                 SiteTruth

The pyparsing examples page includes a street address parser (http://
pyparsing.wikispaces.com/space/showimage/streetAddressParser.py) that
will handle these test cases:

    100 South Street
    123 Main
    221B Baker Street
    10 Downing St
    1600 Pennsylvania Ave
    33 1/2 W 42nd St.
    454 N 38 1/2
    21A Deer Run Drive
    256K Memory Lane
    12-1/2 Lincoln
    23N W Loop South
    23 N W Loop South
    25 Main St
    2500 14th St
    12 Bennet Pkwy
    Pearl St
    Bennet Rd and Main St
    19th St

-- Paul




From paul.hankin at gmail.com  Wed Oct 24 08:53:13 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 24 Oct 2007 12:53:13 -0000
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <1193230393.247264.174150@e34g2000pro.googlegroups.com>

On Oct 24, 1:09 pm, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this code
>
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
>
> I think there is a better way, but I can't see how...

import operator
return filter(cls.dArguments), filter(operator.not_, cls.dArguments)

Or just:

mandatory = [arg for arg in cls.dArguments in arg]
optional = [arg for arg in cls.dArguments in not arg]
return mandatory, optional

--
Paul Hankin



From mishok13 at gmail.com  Wed Oct 31 10:19:25 2007
From: mishok13 at gmail.com (Andrii V. Mishkovskyi)
Date: Wed, 31 Oct 2007 17:19:25 +0300
Subject: Fwd: Namespace question
In-Reply-To: <192840a00710310718s1faec38pdd6080d023dcb1dd@mail.gmail.com>
References: <200710311506.27887.Frank.Aune@broadpark.no>
	<192840a00710310718s1faec38pdd6080d023dcb1dd@mail.gmail.com>
Message-ID: <192840a00710310719s4e5452dauc34070f9f83dd25c@mail.gmail.com>

2007/10/31, Frank Aune <Frank.Aune at broadpark.no>:
> Hello,
>
> Is it possible writing custom modules named the same as modules in the
> standard library, which in turn use the same module from the standard
> library?
>
> Say I want my application to have a random.py module, which in turn must
> import the standard library random.py module also, to get hold of the randint
> function for example.
>
> My attempts so far only causes my random.py to import itself instead of the
> standard library random.py
>
> Receipt for disaster? :)

You mean something like this:

>>>import random
>>>def foo():
...    print '42'
>>>random.randit = foo
>>>random.randit()
42

am I right?
--
Wbr, Andrii Mishkovskyi.

He's got a heart of a little child, and he keeps it in a jar on his desk.


From dwblas at gmail.com  Tue Oct 23 18:11:31 2007
From: dwblas at gmail.com (dwblas at gmail.com)
Date: Tue, 23 Oct 2007 15:11:31 -0700
Subject: Lists and Sublists
In-Reply-To: <1193175869.803399.43650@y27g2000pre.googlegroups.com>
References: <1193175869.803399.43650@y27g2000pre.googlegroups.com>
Message-ID: <1193177491.149033.19130@i38g2000prf.googlegroups.com>

> I am struggling to work out what is the ideal Python data structure
> for the above.  Any help would be greatly appreciated.

The normal way is to use a dictionary of lists.  The key would be the
dictionary key, which would contain a list or a list of lists, that is
each name would be an element of the list unless the name is more than
one word, in which case each name would be converted to a list and
appended to the key.  Some pseudo-code
if key in name_dic:
   name_dic[key] += [name]      ## converted to list
If this doesn't work, then SQLite can be used in memory.  There are
examples on the website.



From Eric_Dexter at msn.com  Fri Oct  5 19:40:40 2007
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: Fri, 05 Oct 2007 16:40:40 -0700
Subject: embedding python..
Message-ID: <1191627640.676114.319430@22g2000hsm.googlegroups.com>

     I compiled the c program that is supposed to allow you to call a
procedure from the command line promt..  (it is from the embeding
example)..  I am a little confused as to what all I am supposed to
distribute to make it work..  Do I just need the python .dll for the
version I compiled or is it working with the installed version of
python.. (I don't want to start deleting stuff to find out)..  Any
help on this question would be apreaceated..





tagger what tagline



From Florian.Lindner at xgm.de  Fri Oct 12 14:51:15 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 20:51:15 +0200
Subject: Problem with MySQL cursor
References: <fel7m3$btq$03$1@news.t-online.com>
	<mailman.80.1192110138.927.python-list@python.org>
	<fenkru$i43$01$1@news.t-online.com>
	<mailman.123.1192193757.927.python-list@python.org>
Message-ID: <feofne$cgs$01$2@news.t-online.com>

Carsten Haese wrote:

> On Fri, 2007-10-12 at 13:12 +0200, Florian Lindner wrote:
>> Carsten Haese wrote:
>> > sql = "INSERT INTO "+DOMAIN_TABLE+"("+DOMAIN_FIELD+") VALUES (%s)"
>> > executeSQL(sql, domainname)
>> 
>> Ok, I understand it and now it works, but why is limitation? Why can't I
>> just the string interpolation in any playes and the cursor function
>> escapes any strings so that they can't do harm to my query?
> 
[...]

Thanks for your good explanation!

Florian



From dfabrizio51 at gmail.com  Tue Oct 23 21:46:06 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Tue, 23 Oct 2007 18:46:06 -0700
Subject: does PyAntlr  come with Antlr download
Message-ID: <1193190366.660923.257490@z24g2000prh.googlegroups.com>

Hello All,

I want use java2python which requires PyAntlr.    I can't seem to find
PyAntlr mentioned on the main website for Antlr.

Thanks,



From python.list at tim.thechases.com  Mon Oct 22 16:22:47 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 22 Oct 2007 15:22:47 -0500
Subject: Iteration for Factorials
In-Reply-To: <250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<Xns99D18CCFC2430duncanbooth@127.0.0.1>	<1193075845.148527.80820@k35g2000prh.googlegroups.com>	<87bqarov3n.fsf@rudin.co.uk>	<1193080349.610343.95430@v23g2000prn.googlegroups.com>
	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>
Message-ID: <471D0697.1010401@tim.thechases.com>

> def fact(x):
>     if x == 0 or x == 1:
>         return 1
>     else:
>         return reduce(operator.mul, xrange(1,x+1))

If obscurity is the name of the game,

   >>> from operator import mul
   >>> fact = lambda i: i > 1 and reduce(mul, xrange(1,i+1)) or i 
 >= 0 and 1 or None
   >>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i))


My eyes hurt after reading that...as the order of operations is 
left to Python to discern (a few judiciously placed parens might 
improve things...though that may be like polishing coprolite)

I haven't yet seen an implementation in C (using the python/C 
interface) or anybody handing off a python AST/opcode-list to an 
appropriate function :)

-tkc





From mail at timgolden.me.uk  Thu Oct 11 11:17:22 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Thu, 11 Oct 2007 16:17:22 +0100
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192115372.754998.270520@o80g2000hse.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
Message-ID: <470E3E82.8040808@timgolden.me.uk>

jeremito wrote:
> On Oct 11, 10:43 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> jeremito wrote:
>>> My Python script makes a bunch of images that I want to use as frames
>>> in a movie.  I've tried searching for a module that will take these
>>> images and put them together in a Quicktime or mpeg movie, but haven't
>>> found anything.  My images are currently pdfs, but I could make them
>>> into just about anything if needed.
>>> Is there a module, or example of how to do this?
>> http://pymedia.org/
>>
>> Diez
> 
> That initially looked promising, but it looks like nobody is working
> on it anymore and it doesn't compile on Mac.  (I should have mentioned
> I am using a Mac.)  Any other suggestions?

Not really a Python module but... run them
through mencoder? (Haven't tried it but it
seems to be saying it's possible).

http://www.mplayerhq.hu/DOCS/man/en/mplayer.1.html#EXAMPLES%20OF%20MENCODER%20USAGE

TJG


From kyosohma at gmail.com  Tue Oct 30 15:38:12 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 30 Oct 2007 19:38:12 -0000
Subject: simple? embedding question
In-Reply-To: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
Message-ID: <1193773092.878006.203990@o3g2000hsb.googlegroups.com>

On Oct 30, 1:31 pm, snd... at gmail.com wrote:
> suppose i have imported two modules foo and bar with
> foo=PyImport_ImportModule("foo") and bar=PyImport_ImportModule("bar")
> respectively.
>
> Now suppose I have an artitrary python expression to evaluate.
> Do I need to parse that thring and check for foo. and bar. before
> jumping the usual
> PyModule_GetDict,PyDict_GetItemString,PyObject_CallObject hoop hoop on
> the PyObject for
> the prefix or there is a better way?
>
> btw PyRun_SimpleString("foo.baz()"); does not work:
>  Traceback (most recent call last):
>   File "<string>", line 1, in ?
> NameError: name 'foo' is not defined
>
> and i potentially need a PyObject* back with the result of the
> expression anyway.

I'm confused. What is the benefit of importing this way in the first
place? Everything I've read has always been either of the following
(or a variant thereof):

import foo

or

from foo import bar

Mike

P.S. Yes, I did see the docs mention this method here:
http://docs.python.org/api/importing.html but i have always followed
http://effbot.org/zone/import-confusion.htm or http://docs.python.org/ref/import.html



From tokland at gmail.com  Mon Oct 22 16:10:10 2007
From: tokland at gmail.com (tokland at gmail.com)
Date: Mon, 22 Oct 2007 13:10:10 -0700
Subject: Iteration for Factorials
In-Reply-To: <87bqarov3n.fsf@rudin.co.uk>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
Message-ID: <1193083810.302605.128630@y27g2000pre.googlegroups.com>

On 22 oct, 20:35, Paul Rudin <paul.nos... at rudin.co.uk> wrote:

> import operator
> def fact(x):
>     return reduce(operator.mul, xrange(1,x))

Maybe:

import operator
def fact(x):
    return reduce(operator.mul, xrange(2, x+1), 1)

fact(0)
1
fact(4)
24



From alexandre.badez at gmail.com  Wed Oct 24 08:09:40 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Wed, 24 Oct 2007 12:09:40 -0000
Subject: Better writing in python
Message-ID: <1193227780.481365.261900@q3g2000prf.googlegroups.com>

I'm just wondering, if I could write a in a "better" way this code

lMandatory = []
lOptional = []
for arg in cls.dArguments:
  if arg is True:
    lMandatory.append(arg)
  else:
    lOptional.append(arg)
return (lMandatory, lOptional)

I think there is a better way, but I can't see how...



From steve at holdenweb.com  Sat Oct 20 08:30:51 2007
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 20 Oct 2007 08:30:51 -0400
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
In-Reply-To: <1192779973.14981.36.camel@viola.izb.knu.ac.kr>
References: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
	<1192779973.14981.36.camel@viola.izb.knu.ac.kr>
Message-ID: <4719F4FB.7020508@holdenweb.com>

Byung-Hee HWANG wrote:
[... whole article quoted ...]
> +1 ;;
> BTW, what is G2/1.0? Is that Emacs-like editor?
> 
I can't tell you that, but I do know that someone who quotes a whole 
lengthy article like that just to ask a simple question isn't being very 
considerate of their readers.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From musiccomposition at gmail.com  Mon Oct 15 22:39:20 2007
From: musiccomposition at gmail.com (Benjamin)
Date: Tue, 16 Oct 2007 02:39:20 -0000
Subject: Newbi Q: What is a rational for strings not being lists in Python?
In-Reply-To: <mailman.35.1192478621.13605.python-list@python.org>
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
	<mailman.35.1192478621.13605.python-list@python.org>
Message-ID: <1192502360.503727.299990@e34g2000pro.googlegroups.com>

On Oct 15, 3:03 pm, "Matt McCredie" <mccre... at gmail.com> wrote:
> On 10/15/07, Dmitri O.Kondratiev <doko... at gmail.com> wrote:
>
>
>
> > To clarify my point:
> > reverse()  is  a lucky one  - Python has variants of *this particular*
> > function both for lists and strings. Yet what about other list functions?
> > How in general, can I write a function that works  both on list and string
> > types? Both are sequences, right? Why string is not a subtype of a list
> > then?
> > The advantage of string being a list of elements, where element is a char is
> > that all list functions will work *without any modifications* on strings as
> > well as on other types of lists.
> > So, I am trying to understand: what is a rational for strings not being
> > lists in Python?
>
> > Thanks,
> > --
> > Dmitri O. Kondratiev
> > doko... at gmail.com
> >http://www.geocities.com/dkondr
>
> >  On 10/15/07, Dmitri O.Kondratiev <doko... at gmail.com> wrote:
> > > Gary, thanks for lots of info!
> > > Python strings are not lists! I got it now. That's a pity, I need two
> > different functions: one to reverse a list and one to reverse a string:
>
> > > def reverseList(xs):
> > >     if xs == []:
> > >         return xs
> > >     else:
> > >         return (reverseList (xs[1:])) + [xs[0]]
>
> > > def reverseStr(str):
> > >     if str == "":
> > >         return str
> > >     else:
> > >         return (reverseStr (str[1:])) + str[0]
>
> > > Ok. Now regarding in-place reversal of a list:
>
> > > >>> l = [1,2,3]
> > > >>> l
> > > [1, 2, 3]
> > > >>> l.reverse()
> > > >>> l
> > > [3, 2, 1]
>
> > > That was, as I expected. Good.
>
> > > Then why this ? :
>
> > > >>> ls = [1,2,3].reverse()
> > > >>> ls
>
> > > >>> print [1,2,3].reverse()
> > > None
>
> > > I mean, why ls is empty after assignment?
>
> > > Also, I couldn't find in the Python docs what this form of slicing means:
> > > xs[::-1]  ?
>
> > > It works for creating a reversed copy of either a string or a list, but
> > what does '::-1' syntax means?
>
> > > Thanks,
>
> > > Dmitri O. Kondratiev
> > > doko... at gmail.com
> > >http://www.geocities.com/dkondr
>
> > > On 10/15/07, Gary Herron < gher... at islandtraining.com> wrote:
> > > > Dmitri O.Kondratiev wrote:
>
> > > > > The function I wrote (below) reverses lists all right:
>
> > > > > def reverse(xs):
> > > > >     if xs == []:
> > > > >         return []
> > > > >     else:
> > > > >         return (reverse (xs[1:])) + [xs[0]]
>
> > > > > >>> reverse ([1,2,3])
> > > > > [3, 2, 1]
>
> > > > > Yet when I try to reverse a string I  get:
>
> > > > > >>> reverse ("abc")
>
> > > > > ...
> > > > > ...
> > > > > ...
>
> > > > >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
> > > > >     return (reverse (xs[1:])) + [xs[0]]
>
> > > > >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
> > > > >     return (reverse (xs[1:])) + [xs[0]]
>
> > > > >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
>
> > > > >     if xs == []:
>
> > > > > RuntimeError: maximum recursion depth exceeded in cmp
>
> > > > > What's wrong? Why recursion never stops?
>
> > > > If you are doing this as an python-learning exercise, then read on.   If
> > > > you are doing this reversal for real code, then try:
>
> > > >   xs.reverse() for in-place reversal of a list (but not a string), or
> > > >   result = xs[::-1] for creating a reversed copy of either a string or a
> > > > list
>
> > > > Your recursion stops when xs == [], but when you're stripping characters
> > > > off a string,  like 'abc', the remaining portion will be 'bc', then 'c',
> > > > than '', but never [] so you 'll never stop.
>
> > > > Try:
>
> > > > if xs == []:
> > > >     return []
> > > > elif xs == '':
> > > >     return ''
> > > > else:
> > > >     ...
>
> > > > Gary Herron
>
> > > > > Thanks,
> > > > > Dima
>
> The example you posted won't work with tuples either because they,
> like strings, are also immutable. So, the best way to get the posted
> code to work (which is a bad way to go about reversing a string, but I
> digress) is to cast the input parameter to a list first. The returned
> value will always be a list, but you will simply have to convert it
> back to the appropriate type when you are done.
>
> What is the purpose if immutability? It allows a value to be hashed. I
> don't want to get into a discussion about methods for hashing mutable
> types, if you are interested just do a search on the list archives.
> Hashing allows for quick comparisons of values, but more importantly
> it allows for values to be used as keys for the dict type. This is
> very important because, as you will soon find out if you keep learning
> the language, all namespaces in python are implemented as dicts.
Good explanation, but basically strings are immutable so they can be
used in dicts.
>
> So... if you want a mutable string, just cast it to a list, do your
> operations and cast it back to a string.
>
> Incidentally, the proper method for converting a list of characters to
> a string is by using the join method on an empty string.
>
> >>> s = "I am a string"
> >>> x = list(s)
> >>> x
>
> ['I', ' ', 'a', 'm', ' ', 'a', ' ', 's', 't', 'r', 'i', 'n', 'g']>>> "".join(x)
>
> 'I am a string'
>
> Matt




From kyosohma at gmail.com  Tue Oct 16 15:14:33 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 16 Oct 2007 19:14:33 -0000
Subject: Good Book
In-Reply-To: <mailman.51.1192522719.13605.python-list@python.org>
References: <mailman.51.1192522719.13605.python-list@python.org>
Message-ID: <1192562073.382154.111530@k35g2000prh.googlegroups.com>

On Oct 16, 3:00 am, Lars Johansen <l... at larsjohansen.org> wrote:
> HI are there any recommended books for an sysadmin who has been mostly
> writing shell scripts, but want to move up to create more complex
> programs.

See also

http://www.ibm.com/developerworks/aix/library/au-python/
http://www.samag.com/documents/s=8964/sam0312a/0312a.htm

Mike



From fw3 at hotmail.co.jp  Wed Oct 10 16:38:30 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Wed, 10 Oct 2007 20:38:30 +0000
Subject: Launch file from Python
In-Reply-To: <slrnfbuhpa.52s.grahn+nntp@frailea.sa.invalid>
References: <1186594137.971393.128780@57g2000hsv.googlegroups.com>
	<slrnfbuhpa.52s.grahn+nntp@frailea.sa.invalid>
Message-ID: <BLU107-W12DD7FEB9B03935463A909B4A60@phx.gbl>


I have tried to use os.system to run an application inside python on ms-window. However, the applicaion will grap the python and I could not do anything inside python shell unless I quit the application. Are there any way to avoid this? so I can still type command in python shell. Here is the command I used to open the editor:
 
os.sytem('gvim test.py')
 
After this command if I do not quit the gvim, I could not enter command in python shell.
 
 
Thanks
 
Frank
 
> From: grahn+nntp at snipabacken.dyndns.org> Subject: Re: Launch file from Python> Date: Sun, 12 Aug 2007 17:44:48 +0000> To: python-list at python.org> > On Wed, 08 Aug 2007 10:28:57 -0700, jocago at gmail.com <jocago at gmail.com> wrote:> > Good afternoon from someone who is trying to learn Python.> >> > I would like to launch an app from within a Python script. From the> > examples I have found, I should be able to do this with os.system.> >> > I use this:> > os.system("xplanet-1.2.0/xplanet.exe -fontsize 24 -label -target earth> > -lat 33.65 -lon -84.42 -radius 40 -num_times 1 -tmpdir .")> > This is copied directly from the .bat file that launches the xplanet> > app. It works there.> >> > and get this:> > 1> > That means "error", as others noted.> > It is odd that you get no printouts. Had this been on Unix, you'd> either get "file not found" or similar from the shell trying to run> the thing, or something from xplanet itself (only really badly> programs return failure without printing some kind of cause).> > Two more comments, assuming you are on Windows (you mention ".bat> files"):> > - You use the relative path xplanet-1.2.0/xplanet.exe. That should> require your program to have the parent of xplanet-1.2.0 as current> directory. Did the .bat script change directory first?> > - It is unusual to use / as a path separator on Windows --> xplanet-1.2.0\xplanet.exe is more normal. Some parts of Windows> tolerate both, others do not, IIRC. But Python itself should not> care in this case.> > /Jorgen> > -- > // Jorgen Grahn <grahn@ Ph'nglui mglw'nafh Cthulhu> \X/ snipabacken.dyndns.org> R'lyeh wgah'nagl fhtagn!> -- > http://mail.python.org/mailman/listinfo/python-list
_________________________________________________________________
???????????????????????????MSN ???????
http://keyword.jp.msn.com/default.aspx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/35e24902/attachment.html>

From stefan.behnel-n05pAM at web.de  Tue Oct  9 06:52:02 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Tue, 09 Oct 2007 12:52:02 +0200
Subject: Python and UML
In-Reply-To: <1191925999.268412.39470@v3g2000hsg.googlegroups.com>
References: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>
	<5n12llFfhe3hU3@mid.uni-berlin.de>
	<1191925999.268412.39470@v3g2000hsg.googlegroups.com>
Message-ID: <470B5D52.2060306@web.de>

aine_canby at yahoo.com wrote:
> On 9 Okt, 12:15, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>>> IMHO UML is ... crap, at least when it comes to actual developing.
> 
> What alternatives are there?

What's your use case?

Stefan


From gagsl-py2 at yahoo.com.ar  Mon Oct 29 21:10:16 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 22:10:16 -0300
Subject: getting serialized data into and out of a database
References: <887503.28306.qm@web55308.mail.re4.yahoo.com>
Message-ID: <op.t0zj7egwx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 29 Oct 2007 19:07:18 -0300, Michael Pelz Sherman  
<mpelzsherman at yahoo.com> escribi?:

> I'm having a devil of a time getting serialized data into and out of a  
> database (MySQL in this case) using python and MySQLdb.
>
> I have some C code that has its own serialization/deserialization  
> functions, which we've wrapped using SWIG.
>
> I am able to save the serialized C structs to disk but when I try to  
> write the exact same data to MySQL and pull it back out, I'm getting  
> some strange results. The data comes back looking like this:
>
> array('c', '\x01r\x01\x00\x...)
>
> Is this a python buffer, or what? How can I access the data in there?  
> I've tried using [1] but that doesn't seem to work.

It's an array of characters <http://docs.python.org/lib/module-array.html>
You can write it to disk again using its tofile() method

-- 
Gabriel Genellina



From pavlovevidence at gmail.com  Wed Oct 10 09:38:14 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 10 Oct 2007 06:38:14 -0700
Subject: Singleton
In-Reply-To: <1192023276.765950.198300@57g2000hsv.googlegroups.com>
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<1192023276.765950.198300@57g2000hsv.googlegroups.com>
Message-ID: <1192023494.013843.106200@22g2000hsm.googlegroups.com>

On Oct 10, 9:34 am, OnCallSupport... at gmail.com wrote:
> Spring Python (http://springpython.python-hosting.com) offers a
[snip spam]


Too bad your bot can't be bothered to read the post it would have
known the singleton wasn't the problem here.


Carl Banks



From python at kareta.de  Sun Oct 28 08:47:21 2007
From: python at kareta.de (=?ISO-8859-15?Q?J=FCrgen_Kareta?=)
Date: Sun, 28 Oct 2007 13:47:21 +0100
Subject: Using matplotlib/wxpython on XP embedded
Message-ID: <472484D9.4020402@kareta.de>

Hello List,

my customer is looking for an application to show some simple 2d graphs 
based on messured data.

I'm consider to use wxpython, matplotlib and py2exe to build and compile 
this application. Mayby I also like to use WxMPL and inosetup. The 
target platform is XP embedded. As I don't have XP embedded available, I 
can't try it out.

So my question is, if somebody has experiances with the above mentioned 
libraries on XP embedded ? Should it work out of the box similar to a
usual windows environment or do I have to do some special builds for XPe 
or is it even impossible to use those libraries on it?

Thanks for your help.

J?rgen


From sluggoster at gmail.com  Mon Oct 22 18:07:33 2007
From: sluggoster at gmail.com (Mike Orr)
Date: Mon, 22 Oct 2007 22:07:33 -0000
Subject: if instance exists problem ..
In-Reply-To: <13hdj38n7n3bv55@corp.supernews.com>
References: <mailman.142.1192660790.13605.python-list@python.org>
	<1192662735.463554.165450@e9g2000prf.googlegroups.com>
	<13hdj38n7n3bv55@corp.supernews.com>
Message-ID: <1193090853.386644.11670@y27g2000pre.googlegroups.com>

On Oct 17, 8:00 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Wed, 17 Oct 2007 23:12:15 +0000, Paul Hankin wrote:
> > 'if x' doesn't test if x exists, it tests if x when cast to a bool is
> > True.
>
> To be pedantic:
>
> Python doesn't have type casts. bool(x) doesn't cast x as a bool, it
> creates a brand new Boolean object from x.
>
> Also, the "if x" test looks at x.__nonzero__() first, and if that method
> doesn't exist, it looks to see if x.__len__() returns 0 or not. See
>
> http://docs.python.org/ref/customization.html

To be lazy, you can get away with 'if x:' if you *know* that neither
the class nor its superclasses override .__nonzero__ or .__len__,
because the instance then defaults to true.  Classes that *do*
override these methods are generally emulating a numeric or collection
type, or are using False to signal "something isn't there".
ConfigParser is doing the latter.  That may or may not have been a
good choice by the ConfigParser developers, because it's debatable how
useful it is for empty ConfigParsers to be False.  But the fact
remains that it is this way, and an instance of *any* third-party
class may be false for reasons you don't expect.

--Mike



From andrewwest at gmail.com  Fri Oct 26 21:14:18 2007
From: andrewwest at gmail.com (Andrew West)
Date: Sat, 27 Oct 2007 01:14:18 -0000
Subject: Finding decorators in a file
Message-ID: <1193447658.249597.178110@57g2000hsv.googlegroups.com>

Probably a bit of weird question. I realise decorators shouldn't be
executed until the function they are defined with are called,  but is
there anyway for me to find all the decorates declared in a file when
I import it? Or perhaps anyway to find the decorators by loading the
file by other methods (with out simply parsing it by hand).

Basically what I'm looking for is a way to, given a python file, look
through that file and find all the decorators and the associated
functions, that includes any arguments that the decorator has.

Sorry if this has been asked before but I've googled no end and come
up with nothing so far.



From cokofreedom at gmail.com  Tue Oct 23 04:10:53 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Tue, 23 Oct 2007 08:10:53 -0000
Subject: Python - why don't this script work?
In-Reply-To: <Xns99D288BAE44EMyBigKitty@194.177.96.26>
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
	<1193108392.089611.91170@v29g2000prd.googlegroups.com>
	<Xns99D288BAE44EMyBigKitty@194.177.96.26>
Message-ID: <1193127053.740024.144730@q5g2000prf.googlegroups.com>

On Oct 23, 6:50 am, Ohmster <r... at dev.nul.invalid> wrote:
> Adam Atlas <a... at atlas.st> wrote in news:1193108392.089611.91170
> @v29g2000prd.googlegroups.com:
>
> > I think you're executing it as a shell script. Run "python image-
> > harvester.py", or add "#!/usr/bin/env python" to the top of the file.
>
> Hey that is a cool idea, I think I will try it. I found out what is wrong
> and did not get the results I want, I think the images are protected with
> script. See my other post in this thread for details.
>
> Shoot, the followup might have gone to alt.os.linux. I will repost for you
> here.
>
> I figured it out, I have to run python I think first then the script and
> the URL like this:
>
> $ python image-harvester.pyhttp://public.fotki.com/DaGennelman/
>
> Now that actually seems to be doing something and it sure is busy now. It
> is making a lot of little subdirectories in my test directory. I had to
> copy image-harvester.py to the test directory first, then run python and
> image-harvester.py w/URL and it is going to town. Tons of subfolders, so
> far not images yet but it is not done. At least it is doing something now
> and not bitching and hanging. I guess I had to call up python and pass it
> to the script as the script does not seem to pull up python on it's own. So
> far I have 60 directories and about 45 robots.txt but no jpg files yet. I
> will let you know what happens. I think that these images are protected by
> script, you never get a valid URL to the imgage file, just referrers, and
> numbers and what not. When the image is finally displayed in your browser,
> then you can save it but not until then. Pretty good way to stop a
> harvester. Is this assumption pretty much correct or is there a way to make
> this work? Now that I use python as the first command, I can run it in an
> ssh window now and do not require an x-server.
>
> Feel free to jump right in with your input on how this should or won't work
> and what can be done to make it better. I have all of my scripts in a
> $HOME/scripts/ directory and it is in my path but running this from another
> directory does not work if image-harvester.py is not in the harvest
> directory where I run the script from. I can right click on the image and
> save it but the amazing script trips all over itself with these wacky file
> name. I am all ears if someone figures it.
>
> --
> ~Ohmster | ohmster /a/t/ ohmster dot com
> Put "messageforohmster" in message body
> (That is Message Body, not Subject!)
> to pass my spam filter.

Do note that the reason you may not see images is that the website
has, '''correctly''', identified your program as an automated bot and
blocked it access to things...



From software at ginstrom.com  Sat Oct 27 01:53:15 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Sat, 27 Oct 2007 14:53:15 +0900
Subject: simple question on dictionary usage
In-Reply-To: <1193463043.912167.175890@57g2000hsv.googlegroups.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<1193463043.912167.175890@57g2000hsv.googlegroups.com>
Message-ID: <000001c8185d$ab323a80$0203a8c0@MOUSE>

> On Behalf Of Edward Kozlowski
> I think this should do the trick.  There's probably something 
> more concise than this, but I can't think of it at the moment.
> 
> egt = {}
> for key in record:
>     if key.startswith('E'):
>         egt[key] = record[key]

Not much more concise, but another way:

egt = dict((key, record[key])
            for key in record
            if key.startswith('E'))

Regards,
Ryan Ginstrom



From kyosohma at gmail.com  Mon Oct  8 10:02:39 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 08 Oct 2007 14:02:39 -0000
Subject: How to create a file on users XP desktop
In-Reply-To: <mailman.1648.1191778298.2658.python-list@python.org>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
	<4708CAF4.7020206@bigfoot.com> <47090D86.5080805@tim.thechases.com>
	<mailman.1648.1191778298.2658.python-list@python.org>
Message-ID: <1191852159.536423.63340@19g2000hsx.googlegroups.com>

On Oct 7, 12:30 pm, Tim Golden <t... at timgolden.me.uk> wrote:
> Tim Chase wrote:
> >> You are assuming the system is not localized, that won't work if you
> >> distribute your applications internationally. In my system it is not
> >> "Desktop", it is "Escritorio", and I guess it will vary with every
> >> locale. Does someone know a way to find out what name does the desktop
> >> have?
>
> > I believe you need to read the Desktop value from
>
> > """
> > HKEY_CURRENT_USER\software\microsoft\windows\currentversion\explorer\shell
> > folders
> > """
>
> > which should (in my understanding) hold the full path of the
> > particular folder(s) of interest at that location, including
> > across localizations.
>
> > -tkc
>
> Ideally, use the shell API exposed by pywin32:
>
> <code>
> from win32com.shell import shell, shellcon
>
> desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
>
> </code>
>
> For slight convenience:
>
>    http://timgolden.me.uk/python/winshell.html
>
> TJG

What happened to your winshell module? I would have thought it perfect
for this.

http://timgolden.me.uk/python/winshell.html

Mike



From george.sakkis at gmail.com  Tue Oct 30 01:30:13 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 30 Oct 2007 05:30:13 -0000
Subject: A Python 3000 Question
In-Reply-To: <mailman.621.1193708112.13605.python-list@python.org>
References: <fg5fku$5c1$1@solaris.cc.vt.edu><87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu>
	<mailman.621.1193708112.13605.python-list@python.org>
Message-ID: <1193722213.601946.184070@v29g2000prd.googlegroups.com>

On Oct 29, 9:35 pm, Michael L Torrie <torr... at chem.byu.edu> wrote:
> brad wrote:
> > Not complaining. len is simple and understandable and IMO fits nicely
> > with split(), strip(), etc... that's why I used it as an example, but
> > list(), etc. could be used as examples as well:
>
> > a_string.list() instead of list(a_string)
>
> This is a great example of why list() needs to be a singleton and *not*
> a method of any particular class.

The whole discussion about list() is moot since it's not a function
anyway, it's a type. As long as a list knows hows to initialize itself
given any iterable, it would be useless to require it as a method to
the iterables as well (unless perhaps there are significant
performance improvements when one can create a list much faster than
iterating through it).

> Saying list() should be a method only of something iterable is not only
> foolish, but wasteful.  Why should I burden every iterable object with
> redundant code?

Does the same argument apply for len() ? Nope, you still have to
define __len__. Having a builtin len() that calls the method __len__
seems (using your words) "not only foolish but wasteful".

> In short, making list() a method is wrong-thinking.  Reminds me of java.
>  Ugg.

Agreed, but you're beating a dead horse with list().

> If find Python to be more OO through and through than Java.  Once you
> understand that functions are objects, and duck-typing, things like
> len() being a function rather than a method make perfect sense.

Does the fact that index() or split() are methods make perfect sense
as well? I guess after some time using Python it does, but for most
unbiased users the distinction seems arbitrary.

George



From gneuner2/ at comcast.net  Wed Oct  3 13:21:47 2007
From: gneuner2/ at comcast.net (George Neuner)
Date: Wed, 03 Oct 2007 13:21:47 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
Message-ID: <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>

On Wed, 3 Oct 2007 09:36:40 +0000 (UTC), bcd at pvv.ntnu.no (Bent C
Dalager) wrote:

>In article <85ve9ov971.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>>bcd at pvv.ntnu.no (Bent C Dalager) writes:
>>
>>> In article <fdtsfu$iq6$03$1 at news.t-online.com>,
>>> Frank Goenninger  <frgo at goenninger.net> wrote:
>>>>
>>>>Well, I didn't start the discussion. So you should ask the OP about the 
>>>>why. I jumped in when I came across the so often mentioned "hey, it's 
>>>>all well defined" statement was brought in. I simply said that if that 
>>>>"well-definedness" is against "common understanding" then I don't give 
>>>>a damn about that clever definitions. Because I have to know that there 
>>>>are such definitions - always also knowing that free is not really 
>>>>free.
>>>
>>> "Liberated" is a valid meaning of the word "free".
>>
>>No.  It is a valid meaning of the word "freed".
>
>Only if you're being exceedingly pedantic and probably not even
>then. Webster 1913 lists, among other meanings,
>
>Free
>(...)
>"Liberated, by arriving at a certain age, from the control
>of parents, guardian, or master."
>
>The point presumably being that having been "liberated", you are now
>"free".

I don't think knowing the meaning of a word is being pedantic.
"Freed" is derived from "free" but has a different, though associated,
meaning.  Words have meaning despite the many attempts by Generation X
to assert otherwise.  Symbolism over substance has become the mantra
of the young.

The English language has degenerated significantly in the last 30
years.  People (marketers in particular) routinely coin ridiculous new
words and hope they will catch on.  I remember seeing a documentary
(circa 1990?) about changes in the English language.  One part of the
program was about the BBC news and one of its editors, whom the staff
called the "protector of language", who checked the pronunciation of
words by the news anchors.  The thing that struck me about this story
was the number of BBC newspeople who publicly admitted that they could
hardly wait for this man to retire so they could write and speak the
way they wanted rather than having to be "correct".

Dictionaries used to be the arbiters of the language - any word or
meaning of a word not found in the dictionary was considered a
colloquial (slang) use.  Since the 1980's, an entry in the dictionary
has become little more than evidence of popularity as the major
dictionaries (OED, Webster, Cambridge, etc.) will now consider any
word they can find used in print.

George
--
for email reply remove "/" from address


From marek.rocki at wp.pl  Wed Oct 24 18:19:30 2007
From: marek.rocki at wp.pl (marek.rocki at wp.pl)
Date: Wed, 24 Oct 2007 15:19:30 -0700
Subject: Iteration for Factorials
In-Reply-To: <mailman.336.1193075066.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
	<mailman.336.1193075066.13605.python-list@python.org>
Message-ID: <1193264370.786983.242180@y27g2000pre.googlegroups.com>

Tim Golden napisa (a):

> It's only a moment before the metaclass and
> the Twisted solution come along. :)

I couldn't resist. It's not as elegant as I hoped, but hey, at least
it memoizes the intermediate classes :-)


class fact_0(object):
	value = 1

class fact_meta(object):
	def __new__(cls, name, bases, attrs):
		n = attrs['n']
		class_name = 'fact_%i' % n
		try:
			return globals()[class_name]
		except KeyError:
			new_class = type(class_name, bases, {})
			new_class.value = n * fact(n - 1).value
			new_class.__str__ = lambda self: str(self.value)
			globals()[class_name] = new_class
			return new_class

class fact(object):
	def __new__(self, n_):
		class spanish_inquisition(object):
			__metaclass__ = fact_meta
			n = n_
		return spanish_inquisition()

print fact(5)
print fact(3)
print fact(1)



From mccredie at gmail.com  Thu Oct 18 12:41:42 2007
From: mccredie at gmail.com (Matimus)
Date: Thu, 18 Oct 2007 16:41:42 -0000
Subject: Convert string to command..
In-Reply-To: <1192723746.476620.244430@e34g2000pro.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
Message-ID: <1192725702.690339.302300@q5g2000prf.googlegroups.com>

On Oct 18, 9:09 am, Abandoned <best... at gmail.com> wrote:
> On Oct 18, 6:57 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>
>
>
> > Abandoned wrote:
> > > On Oct 18, 6:35 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > >> Abandoned wrote:
> > >> > On Oct 18, 6:14 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > >> >> Abandoned wrote:
> > >> >> > Thanks you all answer..
> > >> >> > But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
> > >> >> > (100.000 elements)
> > >> >> > Is there any easy alternative ?
>
> > >> >> How big? How slow? For me, a 10000-element list takes  0.04 seconds to
> > >> >> be parsed. Which I find fast.
>
> > >> >> Diez
>
> > >> > 173.000 dict elements and it tooks 2.2 seconds this very big time for
> > >> > my project
>
> > >> Where does the data come from?
>
> > >> Diez
>
> > > Data come from database..
> > > I want to cache to speed up my system and i save the dictionary to
> > > database for speed up but eval is very slow for do this.
> > > Not: 2.2 second only eval operation.
>
> > Does the dictionary change often?
>
> > And you should store a pickle to the database then. Besides, making a
> > database-query of that size (after all, we're talking a few megs here) will
> > take a while as well - so are you SURE the 2.2 seconds are a problem? Or is
> > it just that you think they are?
>
> > Diez- Hide quoted text -
>
> > - Show quoted text -
>
> I'm very confused :(
> I try to explain main problem...
> I have a table like this:
> id-1 | id-2 | value
> 23     24       34
> 56     68       66
> 56     98       32455
> 55     62       655
> 56     28       123
> .... ( 3 millions elements)
>
> I select where id=56 and 100.000 rows are selecting but this took 2
> second. (very big for my project)
> I try cache to speed up this select operation..
> And create a cache table:
> id-1 | all
> 56    {68:66, 98:32455, 62:655}
>
> When i select where id 56 i select 1 row and its took 0.09 second but
> i must convert text to dictionary..
>
> Have you got any idea what can i do this conver operation ?
> or
> Have you got any idea what can i do cache for this table ?

I think several people have given you the correct answer, but for some
reason you aren't getting it. Instead of saving the string
representation of a dictionary to the database, pickle the dictionary
(not the string representation, but the actual dictionary) and save
the pickled object as a BLOB to the database. using pickle to re-
create the dictionary should be much faster than evaluating a string
representation of it.

Matt




From jens.hester at googlemail.com  Tue Oct 16 17:05:19 2007
From: jens.hester at googlemail.com (jens.hester at googlemail.com)
Date: Tue, 16 Oct 2007 14:05:19 -0700
Subject: Embedding Python in a multithreaded managed C++ application
Message-ID: <1192568719.347572.117970@q5g2000prf.googlegroups.com>

Hi experts,
I am currently embedding the Python interpreter 2.3.4 in a managed C++
application (I currently use an unmanaged dll which is linked to
Python23.lib). Forget about Ironpython - no binary compatibility for
extension modules, forget about a decent C API, by the way...

After a lot of work I managed to embed the interpreter with the Global
Python Interpreter lock correctly used from each thread. I have,
however, still a deadlock which I am not able to find and is related
to the dll I use. Does anybody have an idea how to debug the exact
source of this deadlock by means of the Python debug options.
Thanks a lot for any help.
ThreadShredder



From gagsl-py2 at yahoo.com.ar  Wed Oct  3 00:00:43 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 01:00:43 -0300
Subject: setuptools without unexpected downloads
References: <87ejgmklep.fsf@benfinney.id.au>
	<1190802526.695391.326220@n39g2000hsh.googlegroups.com>
	<5lurorFa92euU1@mid.uni-berlin.de>
	<1190805012.275901.227570@57g2000hsv.googlegroups.com>
	<5luv0iFaai82U1@mid.uni-berlin.de>
	<1190808836.056298.232640@57g2000hsv.googlegroups.com>
	<fddivk$f90$1@sea.gmane.org>
	<mailman.1111.1190813942.2658.python-list@python.org>
	<1190840682.716950.131830@r29g2000hsg.googlegroups.com>
	<mailman.1164.1190908383.2658.python-list@python.org>
	<1191330684.132452.179580@y42g2000hsy.googlegroups.com>
Message-ID: <op.tzlr3hl4x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 02 Oct 2007 10:11:24 -0300, <kyosohma at gmail.com> escribi?:

> Holden indicates that VS2003 is the current compiler used for the
> official Python distribution. Do you know how to use that program to
> compile an exe?

Open the program, press F1 and read the documentation provided by its  
vendor, Microsoft.

> I'm assuming the line "python setup.py bdist_wininst"
> isn't sufficient since it was an answer to my somewhat naive question.

Why not? As F.L. said, if the setup.py is properly built, doing so should  
compile and link all the required modules.
Note that it's not *required* to use Visual Studio to compile Python  
extensions; any decent compiler would do [provided it links against the  
same RTL as used by VS]

This recent blog post contains step-by-step instructions on using free  
tools to compile python extensions:  
<http://boodebr.org/main/python/build-windows-extensions>

-- 
Gabriel Genellina



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 00:03:35 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 01:03:35 -0300
Subject: Capturing output with input
References: <1193596747.543020.78280@e34g2000pro.googlegroups.com>
Message-ID: <op.t0xxj9jmx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 28 Oct 2007 15:39:07 -0300, gopala <krishna.ggk at gmail.com>  
escribi?:

> My initial attempts of using spawn.. , exec.. pipe.. failed since they
> can't capture the std input and std output continuously.
> The lab1.exe will be something like
>
> Enter 2 nos
> 2 3
> The sum is 5
>
> Now i should be able to capture all these.
> Is this possible ? If so please do give me some hints on how to
> achieve this.

On Linux, use the "script" command.
On Windows, select the region to copy using the mouse and paste it onto a  
notepad file.
I don't think Python would help here.

-- 
Gabriel Genellina



From bh at izb.knu.ac.kr  Fri Oct 19 23:53:55 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Sat, 20 Oct 2007 12:53:55 +0900
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
Message-ID: <1192852435.18000.57.camel@viola.izb.knu.ac.kr>

On Fri, 2007-10-19 at 20:28 -0700, Xah Lee wrote:
> When i first heard about distributed revision control system about 2
> years ago, i heard of Darcs, which is written in Haskell. I was hugely
> excited, thinking about the functional programing i love, and the no-
> side effect pure system i idolize, and the technology of human animal
> i rapture in daily.
> 
> I have no serious actual need to use a revision system (RVS) in recent
> years, so i never really tried Darcs (nor using any RVS). I just
> thought the new-fangled distributed tech in combination of Haskell was
> great.
> 
> About few months ago, i was updating a 6-year old page i wrote on unix
> tools: ( http://xahlee.org/UnixResource_dir/usoft.html ) and i was
> trying to update myself on the current state of art of revision
> systems. I read Wikipedia this passage:
> 
> http://en.wikipedia.org/wiki/Darcs
> 
> ? Darcs currently has a number of significant bugs (see e.g. [1]). The
> most severe of them is "the Conflict bug" - an exponential blowup in
> time needed to perform conflict resolution during merges, reaching
> into the hours and days for "large" repositories. A redesign of the
> repository format and wide-ranging changes in the codebase are planned
> in order to fix this bug, and work on this is planned to start in
> Spring 2007 [2].  ?
> 
> This somewhat bursted my bubble, as there always was some doubt in the
> back of my mind about just how Darcs is not just a fantasy-ware
> trumpeted by a bunch of functional tech geekers. (i heard of Darcs in
> irc emacs and haskell channels, who are often student and hobbiests
> programers)
> 
> Also, in my light research, it was to my surprise, that Darcs is not
> the only distributed systems, and perhaps not the first one neither,
> contrary to my impressions. In fact, today there are quite a LOT
> distributed revision systems, actually as a norm. When one looks into
> these, such as Git ( http://en.wikipedia.org/wiki/Git_(software) ) one
> finds that some of them are already in practical industrial use for
> large projects, as opposed to Darcs's academic/hobbist kind of
> community.
> 
> In addition to these findings, one additional that greatly pissed me
> off entirely about Darcs, is the intro of the author (David Roundy)'s
> essay about his (questionable-sounding) ?theory of patches? used in
> Darcs. ( http://darcs.net/manual/node8.html#Patch )
> 
> Here's the 2 passages:
> 
> ?I think a little background on the author is in order. I am a
> physicist, and think like a physicist. The proofs and theorems given
> here are what I would call ``physicist'' proofs and theorems, which is
> to say that while the proofs may not be rigorous, they are practical,
> and the theorems are intended to give physical insight. It would be
> great to have a mathematician work on this, but I am not a
> mathematician, and don't care for math.?
> 
> ?From the beginning of this theory, which originated as the result of
> a series of email discussions with Tom Lord, I have looked at patches
> as being analogous to the operators of quantum mechanics. I include in
> this appendix footnotes explaining the theory of patches in terms of
> the theory of quantum mechanics. I know that for most people this
> won't help at all, but many of my friends (and as I write this all
> three of darcs' users) are physicists, and this will be helpful to
> them. To non-physicists, perhaps it will provide some insight into how
> at least this physicist thinks.?
> 
> I love math. I respect Math. I'm nothing but a menial servant to
> Mathematics. Who the fuck is this David guy, who proclaims that he's
> no mathematician, then proceed to tell us he dosen't fucking care
> about math? Then, he went on about HIS personal fucking zeal for
> physics, in particular injecting the highly quacky ?quantum mechanics?
> with impunity.

I'm gonna like your writings with all respect. Actually your writings
has the quiet force. See you often ;;

-- 
Byung-Hee HWANG <bh at izb.knu.ac.kr> * ??? ?????? ????????
InZealBomb, Kyungpook National University, KOREA

"OK. Then I have to kill him."
		-- Michael Corleone, "Chapter 11", page 146


From robert.kern at gmail.com  Tue Oct  2 00:57:55 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 01 Oct 2007 23:57:55 -0500
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191294265.611162.57730@g4g2000hsf.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>	<1191292451.096937.63000@50g2000hsm.googlegroups.com>
	<1191294265.611162.57730@g4g2000hsf.googlegroups.com>
Message-ID: <fdsj4j$dj2$1@sea.gmane.org>

bramble wrote:
> On Oct 1, 10:34 pm, Benjamin <musiccomposit... at gmail.com> wrote:
>> and they are still supported
>> not to break compatability.
> 
> Hm. Ok. I can see that for the 2.x releases. But Py3k is all about
> breaking compatibility, so, it would seem there's more to the story.

Yes, compatibility is broken, strictly speaking; however, the goal is that the
majority of changes can be handled automatically using the 2to3 tool to convert
the source code. You can't really do that if you remove Tkinter entirely.

-- 
Robert Kern

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



From deets at nospam.web.de  Wed Oct 17 19:12:49 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 01:12:49 +0200
Subject: if instance exists problem ..
In-Reply-To: <mailman.142.1192660790.13605.python-list@python.org>
References: <mailman.142.1192660790.13605.python-list@python.org>
Message-ID: <5nnj7qFjae1oU1@mid.uni-berlin.de>

stef mientki schrieb:
> hello,
> 
> I've written a convenience wrapper around ConfigObj (which is a imporved 
> ConfigParser).
> 
> Now if I use an instance of the base class, I can easily test is the 
> instance exists by " if ini:",
> like in this example
> 
>    ini = None
>    if ini:
>        print 'ok',type(ini)
>    else:
>        print 'wrong',type(ini)
>    ini = ConfigObj (filename)
>    if ini:
>        print 'ok',type(ini)
>    else:
>        print 'wrong',type(ini)
> 
> Now if I derive a new class form this:
> class inifile (ConfigObj):
>    def __init__ (self, filename):
>        self.ini = ConfigObj ( filename , list_values = False, 
> write_empty_values = True )
>        self.ini.newlines = '\r\n'   # not strictly necessary
>        self.Section = ''
>        self.Modified = False
> 
> 
> the test if an instance exists, always returns false.
>    ini = inifile (filename)
>    if ini:
>        print 'ok',type(ini)
>    else:
>        print 'wrong',type(ini)
> 
> Why is that ?
> What should I do to the same simple test for existance ?

Use isinstance(obj, type).

Diez


From researchbase at gmail.com  Mon Oct 29 06:44:47 2007
From: researchbase at gmail.com (krishnakant Mane)
Date: Mon, 29 Oct 2007 16:14:47 +0530
Subject: problem opening html file with webbrowser.open
Message-ID: <f81479dd0710290344y2014a207u24b80146176f0fc8@mail.gmail.com>

hello all,
as I posted in my previous thread, I am generating html reports for my
client software.
I am yet to find a satisfactory module which can help me actually
create headings, bold and italics etc without merging html with data
variables.
any ways I am right now doing the hamd coding myself.  may be I have
overlooked some module.
right now I am in the process of trying templayer.
but my main issue is that when I use the
webbrowser.open("file:///home/myname/report.html"), webbroser opens
but the page does not come up.
there is certainly some thing wrong in what I am giving to the open function.
can some one correct me?
regards,
Krishnakant.


From gandalf at designaproduct.biz  Wed Oct 10 05:38:28 2007
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Wed, 10 Oct 2007 11:38:28 +0200
Subject: Static variable vs Class variable
In-Reply-To: <13go2edckqnrrf0@corp.supernews.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>	<mailman.0.1191958235.927.python-list@python.org>
	<13go2edckqnrrf0@corp.supernews.com>
Message-ID: <470C9D94.3030101@designaproduct.biz>

Steven D'Aprano ?rta:
> On Tue, 09 Oct 2007 21:25:38 +0200, Laszlo Nagy wrote:
>
>   
>> a = 1
>> a+= 1 # The compiler will probably optimize this and the Python bytecode
>> interpreter will not rebind 'a' here, just increment the integer in
>> memory.
>>     
>
> No. This is Python, not C. You can't increment integers in memory. 
>   
What? Please read my post. I was talking about __implementation level__, 
clearly. :-)


From bj_666 at gmx.net  Mon Oct 29 19:52:25 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 29 Oct 2007 23:52:25 GMT
Subject: statvfs
References: <QpOdncfQo4mRy7vanZ2dnUVZ_s-pnZ2d@giganews.com>
Message-ID: <5ona1oFneqbaU3@mid.uni-berlin.de>

On Mon, 29 Oct 2007 16:52:12 -0500, Korthrun wrote:

> I'm writing some scripts to populate RRD's, mainly for practicing python.
> 
> As such I've decided to play with statvfs in order to build disk
> graphs. Here is what I have and what I get. What I'm curious about
> here is the meaning of the "L" charcter, as that fubars math.

The L means its a `long` literal, i.e. an integer value that can be
arbitrary big.  Well its limited by memory of course.

And it doesn't "fubar" math, the L just shows up in the string
representation but you don't calculate with strings but numbers.

> ###start code###
> 
> from os import statvfs, path
> from statvfs import *
> 
> mps = [ '/', '/home', '/www', '/var', '/storage/backups',
> '/storage/snd' ]
> 
> for fs in mps:
> 	data = statvfs(fs)
> 	print data
> 
> ###end code, start output###
> (4096, 4096, 4883593L, 4045793L, 4045793L, 0L, 0L, 0L, 1024, 255)
> (4096, 4096, 1220889L, 1114718L, 1114718L, 0L, 0L, 0L, 0, 255)
> (4096, 4096, 19267346L, 18273138L, 18273138L, 0L, 0L, 0L, 0, 255)
> (4096, 4096, 3662687L, 3492397L, 3492397L, 0L, 0L, 0L, 0, 255)
> (4096, 4096, 3417702L, 2116063L, 2116063L, 0L, 0L, 0L, 0, 255)
> (4096, 4096, 25885944L, 21799115L, 21799115L, 0L, 0L, 0L, 0, 255)
> ###end output###
> 
> Ideally I'll just do some blocksize * number of blocks math to get
> the % of used space.

Just go ahead and do it:

In [185]: stat = os.statvfs('/')

In [186]: stat.f_bsize
Out[186]: 4096

In [187]: stat.f_blocks
Out[187]: 2622526L

In [188]: stat.f_bsize * stat.f_blocks
Out[188]: 10741866496L

Ciao,
	Marc 'BlackJack' Rintsch


From besturk at gmail.com  Wed Oct  3 12:22:35 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 03 Oct 2007 09:22:35 -0700
Subject: Duplicate content filter..
Message-ID: <1191428555.278268.253700@g4g2000hsf.googlegroups.com>

Hi..
I'm working a search engine project now. And i have a problem. My
problem is Duplicate Contents..
I can find the percentage of similarity between two pages but i have a
5 millions index and i search 5 million page contents  to find one
duplicate :(

I want to a idea for how can i find duplicate pages quickly and fast ?

Please help me, i'm sorry my bad english.
King regards..



From trekker182 at comcast.net  Sat Oct 27 15:11:37 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Sat, 27 Oct 2007 15:11:37 -0400
Subject: while within while
Message-ID: <47238D69.5010302@comcast.net>

I've been having some problems with using a while statement for one menu 
within another while statement for the main menu, first time I've done 
it.  It's with choice number two from the menu.  When I run the program, 
I get a UnboundLocalError: local variable 'ai' referenced before 
assignment.  I initialize ai as "", but then it just skips to the you 
choose scissors I choose and nothing shows up.  As soon as I take away 
the while again[0] == "y": statement, the program is fine again which 
leads me to think I'm just placing it in the wrong place.  I just want 
to ask the user if they would like to play again and loop them back to 
the weapons menu if they choose yes.  If they choose no,  loop them back 
to the main menu.  I've placed the question again=raw_input("Would you 
like to play again? ") at the end the tasks for menu choice two.  Ignore 
three....one step at a time. ;)

thx

import random


def main():

    #define and initialize variables
    #choice as int
    choice = 0
    #weapon choice as int
    weaponchoice = 0
    #number of wins
    win = 0
    #number of loses
    lose = 0
    #number of ties
    tie = 0
    #number of rounds
    rounds = 0
    #play again loop
    again = "no"

 

    #intro
    print "READY TO PLAY ROCK, PAPER, SCISSORS???"

    print
   
   
    #Menu loop
    while choice != 4:
        #display menu
        print "Please choose from the following menu: "
        print "1. See the rules"
        print "2. Play against the computer"
        print "3. Play a two player game"
        print "4. Exit"
       
        #prompt user for their menu choice
        choice = input("Please enter your choice here: ")
        print
           
       

        #if statements to determine which choice
        if choice == 1:
            print
            print "The rules of the game are as follows: "
            print
            print "Rock Covers Rock"
            print
            print "Rock Smashes Scissors"
            print
            print "Scissors Cuts Paper"
            print
            print
       
       
        elif choice == 2:
            while again[0] == "y":
                #display menu
                print "Please choose a weapon from the following menu: "
                print "1. Rock"
                print "2. Paper"
                print "3. Scissors"

                while weaponchoice != 1 and weaponchoice != 2 and 
weaponchoice != 3:
                    weaponchoice = input("Please choose a weapon: ")
                    if weaponchoice != 1 and weaponchoice != 2 and 
weaponchoice != 3:
                        print
                        print "Error. Please enter a number from 1-3."

                decision = (1, 2, 3)
                ai = str((random.choice(decision)))

                if ai == "1":
                    ai = "rock"
                if ai == "2":
                    ai = "paper"
                if ai == "3":
                    ai = "scissors"

            if weaponchoice == 1:
                weaponchoice = "rock"

            elif weaponchoice == 2:
                weaponchoice = "paper"

            else:
                weaponchoice = "scissors"

            print "====================="
            print "you choose " + weaponchoice
            print
            print "I choose " + ai
            print

            if weaponchoice == "rock" and ai == "scissors":
                win += 1
                print "You WIN by SMASHING those SCISSORS!"

            elif weaponchoice == "paper" and ai == "rock":
                win += 1
                print "You WIN by COVERING that ROCK!"

            elif weaponchoice == "scissors" and ai == "paper":
                win += 1
                print "You WIN by CUTTING that PAPER!"

            elif weaponchoice == ai:
                tie += 1
                print "YOU TIE!"

            else:
                lose += 1
                print "YOU LOSE!"

            print "\nRounds Won: ", + win
            print "\nRounds Lost: ", + lose
            print "\nRounds Tied: ", + tie
            print
            print

            again=raw_input("Would you like to play again? ")


        elif choice == 3:
            print "test"  
      
        elif choice == 4:
            print "Have a great day!"
            print
            print "Thanks for playing!"

        else:
            #invalid
            print "Invalid selection.  Please enter a number from 1 - 4."
            print




From hat at se-162.se.wtb.tue.nl  Thu Oct 25 05:16:09 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Thu, 25 Oct 2007 11:16:09 +0200
Subject: local variable referenced before assignment
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
Message-ID: <slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>

On 2007-10-25, Pete Bartonly <none at try.invalid> wrote:
>
> Quick question, probably quite a simple matter. Take the follow start of 
> a method:
>
>
> def review(filesNeedingReview):
>
>      for item in filesNeedingReview:
>          (tightestOwner, logMsg) = item
>
>          if (logMsg != None):
>              for logInfo in logMsg.changed_paths:
>
>
> This generates the error:
>
>    UnboundLocalError: local variable 'logMsg' referenced before assignment

This should work, are you sure you didn't make a typo in one of the names?

Another way to make this fail would be when the if-condition is outside
the loop (is the indentation correct in your code?).

A short demontration:
>>> def r(fnr):
...   for item in fnr:
...     w,m = item
...     if m == 2:
...       print w
...
>>> fnr = [(1,2), (3,4)]
>>> r(fnr)
1

With respect to compactness and style, you can move your multi-assignment
statement in the for loop, as in

for tightestOwner, logMsg in filesNeedingReview:

Also, brackets around conditions (in the if) are not needed, and comparing
against None is usually done with 'is' or 'is not' instead of '==' or '!='.
The result is then

if logMsg is not None:


> I thought I'd assigned it in the "(tightestOwner, logMsg) = item" line - 
> so in the python interpreter complaining about the fact this assignment 
> might not go well?

No, you'd get an error at that point in that case.


Sincerely,
Albert


From jailtu at luukku.com  Sat Oct 13 09:44:00 2007
From: jailtu at luukku.com (Janne Tuukkanen)
Date: Sat, 13 Oct 2007 16:44:00 +0300
Subject: Foreign Character Problems In Python 2.5 and Tkinter
References: <mailman.160.1192262504.927.python-list@python.org>
	<pan.2007.10.13.12.25.41.721728@luukku.com>
	<mailman.168.1192281215.927.python-list@python.org>
Message-ID: <pan.2007.10.13.13.43.54.219741@luukku.com>

Sat, 13 Oct 2007 16:13:21 +0300, Juha S. kirjoitti:

> Thanks for the reply. I made changes to my code according to your 
> example. Now any Scandinavian characters that are outputted by the 
> program are missing in the Tk text box.


>             file = codecs.open(filename, 'r', 'utf-8', 'ignore')

 Remove that 'ignore'. If you then get error which complains,
that utf-8 codec can't handle the file, you've found the culprit.
The file might be in iso-8859-1.


	JanneT



From f.braennstroem at gmx.de  Wed Oct 17 17:45:36 2007
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Wed, 17 Oct 2007 21:45:36 +0000
Subject: open remote terminal
Message-ID: <ff5olg$oll$2@ger.gmane.org>

Hi,

I would like to use python to start an terminal, e.g. xterm, and login on a
remote machine using rsh or ssh. This could be done using 'xterm -e ssh
machine', but after the login I would like to jump to a given directory.
Does anyone have an idea how to do this with python?

Regards!
Fabian



From fuzzyman at gmail.com  Fri Oct 26 18:18:10 2007
From: fuzzyman at gmail.com (Fuzzyman)
Date: Fri, 26 Oct 2007 22:18:10 -0000
Subject: Python Windows Installation
In-Reply-To: <1193333796.807911.106350@22g2000hsm.googlegroups.com>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<bgd0i3lmeemshhs0bakbof4ati38i8cijn@4ax.com>
	<1193333796.807911.106350@22g2000hsm.googlegroups.com>
Message-ID: <1193437090.956730.253770@o3g2000hsb.googlegroups.com>

On Oct 25, 6:36 pm, TheFlyingDutchman <zzbba... at aol.com> wrote:
> On Oct 24, 11:22 pm, Tim Roberts <t... at probo.com> wrote:
>
> > TheFlyingDutchman <zzbba... at aol.com> wrote:
>
> > >I am trying to install Python 2.5 on Windows XP. It installs into the
> > >root directory on C:\ instead of C:\Python25 which it shows by default
> > >as what it plans to install to. Selecting D:\Python25 on a previous
> > >iteration put the exe in D:\ and did not create a Python25 directory.
>
> > Where did you get the installer?  I've installed Python on Windows many,
> > many times, and have never seen this issue.
> > --
> > Tim Roberts, t... at probo.com
> > Providenza & Boekelheide, Inc.
>
> from python.org.   I doubt many people get this or it would be fixed
> but it still is shocking how it can prompt me that the installation
> directory exists - showing that it fully knows where it is supposed to
> install it - and then go ahead and install it to the root directory
> and claim success. It also uninstalls Python if you ask it to so any
> screwy settings from a previous install should be removed after the
> uninstall, but it also fails to install correctly after an uninstall.

I've never had this problem with the Python.org windows installer.

However I did once use a machine where Python had been installed into
'c:\Program Files\Python24'. It caused no end of problems...

Michael Foord
http://www.manning.com/foord



From michele.simionato at gmail.com  Mon Oct  8 00:06:55 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Mon, 08 Oct 2007 04:06:55 -0000
Subject: weakrefs and bound methods
In-Reply-To: <pan.2007.10.08.03.28.23@REMOVE.THIS.cybersource.com.au>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
	<13gi4vrfqhrs48d@corp.supernews.com>
	<1i5m4bz.18obx4r5bg0gaN%aleax@mac.com>
	<pan.2007.10.08.03.28.23@REMOVE.THIS.cybersource.com.au>
Message-ID: <1191816415.377623.125700@o80g2000hse.googlegroups.com>

On Oct 7, 11:28 pm, Steven D'Aprano
<ste... at REMOVE.THIS.cybersource.com.au> wrote:
> On Sun, 07 Oct 2007 12:55:29 -0700, Alex Martelli wrote:
> >> What should I do when my objects need to perform some special
> >> processing when they are freed, if I shouldn't use __del__?
>
> > The solid, reliable way is:
>
> > from __future__ import with_statement
>
> > and use module contextlib from the Python standard library (or handcode
> > an __exit__ method, but that's rarely needed), generating these special
> > objects that require special processing only in 'with' statements.  This
> > "resource acquisition is initialization" (RAII) pattern is the RIGHT way
> > to ensure timely finalization (particularly but not exclusively in
> > garbage-collected languages, and particularly but not exclusively to
> > ease portability to different garbage collection strategies -- e.g.,
> > among CPython and future versions of IronPython and/or Jython that will
> > support the with statement).
>
> Hmmm... I'm not sure I understand how a with statement is meant to
> replace class.__del__ in practice. It seems to me that the two things
> have different uses. with is useful when you create an object, do
> something with it, dispose of it in an orderly fashion, and then
> continue. How does that help when you create an unknown number of long-
> lasting objects where you can't predict how and when they will be
> disposed of?
>
> Here's a minimal example. I have a module that returns parrot objects:
>
> # Parrot module
> class Parrot(object):
>     def __del__(self):
>         print "I'm now pushing up the daisies"
>
> # Callers code:
> import Parrot
> p = Parrot.Parrot()
> alist = [Parrot.Parrot() for i in range(1000)]
> # do something with p and alist
> print p, alist
> # instances are deleted in arbitrary order
> del p
> del alist[3]
> del alist[853]
> del alist[701]
> del alist
>
> It seems to me that you are saying to re-write the above as something
> like this:
>
> # Parrot module
> class Parrot(object):
>     pass
>
> class killed(object): # context manager
>     def __exit__(self, *exc_info):
>         print "I'm now pushing up the daisies"
>
> # Callers code:
> import Parrot
> with killed(Parrot.Parrot()) as p:
>     # ... er, what do I do with alist???
>     # do arbitrary stuff with p and alist
>     print p, alist
>
> Now, I don't think the above is feasible. What am I missing?

Rename your __del__ to close and call it explicitely:

p.close()
alist[3].close()
alist[853].close()
alist[701].close()

> > An alternative that will work in pre-2.5 Python (and, I believe but I'm
> > not sure, in Jython and IronPython _today_) is to rely on the weakref
> > module of the standard Python library.
>
> ...
>
> I'm going to need some time to play around with that, but it seems
> reasonably straightforward. But the obvious thing I can see is that
> there's an awful lot of boilerplate code that needs to be written for
> each and every class that needs a "weak finalizer".
>
> That is to say, Python "guarantees" that __del__ will always be called
> (unless it isn't... "guarantee void on planet Earth") for your objects,
> so the developer doesn't need to do anything except write the finalizer.

Yep, the problem is that __del__ does NOT guarantee anything.
So, it *looks* easy, but it is actually very fragile and in
subtle cases can betray you without telling. I, for one,
I don't like to have bombs in my code waiting to explode
at some unknown moment ...

> To do the right thing with weakrefs means that not only does the
> developer have to write the finalizer, but he has to write the code to
> ensure the finalizer is called. I'm not sure that's a step forward.

Yep, we would need a better support for finalizers in the
standard library. For the moment, there are various recipes
in the Python cookbook. See also this post:
http://groups.google.com/group/comp.lang.python/browse_frm/thread/b09e02b7c67c8a3b/1ef0f64bb539cfb0?hl=en&lnk=gst&q=simionato+__del__&rnum=1#1ef0f64bb539cfb0



From nick at craig-wood.com  Wed Oct 24 16:30:16 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Wed, 24 Oct 2007 15:30:16 -0500
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>

Py-Fun <lorna.burns at gmail.com> wrote:
>  I'm stuck trying to write a function that generates a factorial of a
>  number using iteration and not recursion.  Any simple ideas would be
>  appreciated.

Here is the math geek answer ;-)

import math

def factorial(i):
    n = i + 1
    return math.exp(-n)*(n**(n-0.5))*math.sqrt(2*math.pi)*(1. + 1./12/n + 1./288/n**2 - 139./51840/n**3)

Works for non integer factorials also...

See here for background

  http://mathworld.wolfram.com/StirlingsSeries.html

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From patrick.waldo at gmail.com  Mon Oct 15 06:47:16 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Mon, 15 Oct 2007 10:47:16 -0000
Subject: Simple Text Processing Help
In-Reply-To: <1192396632.736910.134070@q5g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
Message-ID: <1192445236.310797.91160@z24g2000prh.googlegroups.com>

>     lines = open('your_file.txt').readlines()[:4]
>     print lines
>     print map(len, lines)

gave me:
['\xef\xbb\xbf200-720-7        69-93-2\n', 'kyselina mo\xc4\x8dov
\xc3\xa1      C5H4N4O3\n', '\n', '200-001-8\t50-00-0\n']
[28, 32, 1, 18]

I think it means that I'm still at option 3.  I got the line by line
part.  My code is a lot cleaner now:

import codecs

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"
input = codecs.open(path, 'r','utf8')
output = codecs.open(path2, 'w', 'utf8')

for line in input:
    tokens = line.strip().split()
    tokens[2:-1] = [u' '.join(tokens[2:-1])]   #this doesn't seem to
combine the files correctly
    file = u'|'.join(tokens)                   #this does put '|' in
between
    print file + u'\n'
    output.write(file + u'\r\n')

input.close()
output.close()

my sample input file looks like this( not organized,as you see it):
200-720-7        69-93-2
kyselina mocov?      C5H4N4O3

200-001-8       50-00-0
formaldehyd      CH2O

200-002-3
50-01-1
guanid?nium-chlorid      CH5N3.ClH

etc...

and after the program I get:

200-720-7|69-93-2|
kyselina|mocov?||C5H4N4O3

200-001-8|50-00-0|
formaldehyd|CH2O|

200-002-3|
50-01-1|
guanid?nium-chlorid|CH5N3.ClH|

etc...
So, I am sort of back at the start again.

If I add:

tokens = line.strip().split()
for token in tokens:
    print token

I get all the single tokens, which I thought I could then put
together, except when I did:

for token in tokens:
     s = u'|'.join(token)
     print s

I got ?|2|0|0|-|7|2|0|-|7, etc...

How can I join these together into nice neat little lines?  When I try
to store the tokens in a list, the tokens double and I don't know
why.  I can work on getting the chemical names together after...baby
steps, or maybe I am just missing something obvious.  The first two
numbers will always be the same three digits-three digits-one digit
and then two digits-two digits-one digit.  This seems to be on the
only pattern.

My intuition tells me that I need to add an if statement that says, if
the first two numbers follow the pattern, then continue, if they don't
(ie a chemical name was accidently split apart) then the third entry
needs to be put together.  Something like

if tokens[1] and tokens[2] startswith('pattern') == true
    tokens[2] = join(tokens[2]:tokens[3])
    token[3] = token[4]
    del token[4]

but the code isn't right...any ideas?

Again, thanks so much.  I've gone to http://gnosis.cx/TPiP/ and I have
a couple O'Reilly books, but they don't seem to have a straightforward
example for this kind of text manipulation.

Patrick

On Oct 14, 11:17 pm, John Machin <sjmac... at lexicon.net> wrote:
> On Oct 14, 11:48 pm, patrick.wa... at gmail.com wrote:
>
>
>
> > Hi all,
>
> > I started Python just a little while ago and I am stuck on something
> > that is really simple, but I just can't figure out.
>
> > Essentially I need to take a text document with some chemical
> > information in Czech and organize it into another text file.  The
> > information is always EINECS number, CAS, chemical name, and formula
> > in tables.  I need to organize them into lines with | in between.  So
> > it goes from:
>
> > 200-763-1                     71-73-8
> > n?trium-tiopent?l           C11H18N2O2S.Na           to:
>
> > 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
>
> > but if I have a chemical like: kyselina mo?ov?
>
> > I get:
> > 200-720-7|69-93-2|kyselina|mo?ov?
> > |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
>
> > and then it is all off.
>
> > How can I get Python to realize that a chemical name may have a space
> > in it?
>
> Your input file could be in one of THREE formats:
> (1) fields are separated by TAB characters (represented in Python by
> the escape sequence '\t', and equivalent to '\x09')
> (2) fields are fixed width and padded with spaces
> (3) fields are separated by a random number of whitespace characters
> (and can contain spaces).
>
> What makes you sure that you have format 3? You might like to try
> something like
>     lines = open('your_file.txt').readlines()[:4]
>     print lines
>     print map(len, lines)
> This will print a *precise* representation of what is in the first
> four lines, plus their lengths. Please show us the output.




From richyjsm at gmail.com  Mon Oct  1 21:17:03 2007
From: richyjsm at gmail.com (richyjsm at gmail.com)
Date: Tue, 02 Oct 2007 01:17:03 -0000
Subject: Using fractions instead of floats
In-Reply-To: <1191286998.727959.8010@50g2000hsm.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
Message-ID: <1191287823.018676.35640@o80g2000hse.googlegroups.com>

On Oct 1, 9:03 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> On Oct 1, 7:20 pm, richy... at gmail.com wrote:
>
> > On Oct 1, 8:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
>
> > >   >>> mpq(1,3)+0.6
> > >   mpq(14,15)
>
> > Golly!  That's quite impressive.  And more than a little bit magic as
> > well, since 0.6 is definitely not the same as 3/5.  
>
> It's not? Since when?

The 0.6 above is a floating point number, mathematically very close to
0.6 but definitely not equal to it, since 0.6 can't be represented
exactly as a float.



From bartolotta52 at gmail.com  Sun Oct 28 22:17:33 2007
From: bartolotta52 at gmail.com (my glass)
Date: Sun, 28 Oct 2007 19:17:33 -0700
Subject: 7000+ beautiful Russian girls waiting for men
Message-ID: <1193624253.311819.322490@i13g2000prf.googlegroups.com>

7000+ beautiful Russian girls waiting for men
http://groups.google.com/group/all-good-things/web/beautiful-girls-and-ladies



From martin at v.loewis.de  Wed Oct  3 01:51:49 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 03 Oct 2007 07:51:49 +0200
Subject: Python and SSL
In-Reply-To: <1191389578.176470.161360@50g2000hsm.googlegroups.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
Message-ID: <47032DF5.4000809@v.loewis.de>

> a  certificate that is signed by OpenSSL's own CA( certification
> authority), that is not recognized in the program's list of root CAs,
> causes an exception to be raised.

What is "the program"? What programming language is it written in?
What library does it use to maintain a list of root CAs, and what
code does it execute to find out that a certificate is not in this
list?

Are you sure this is related to Python at all?

Regards,
Martin


From peterbe at gmail.com  Tue Oct 16 10:50:53 2007
From: peterbe at gmail.com (Peter Bengtsson)
Date: Tue, 16 Oct 2007 07:50:53 -0700
Subject: Normalize a polish L
In-Reply-To: <1192485438.934146.139740@q5g2000prf.googlegroups.com>
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<1192485438.934146.139740@q5g2000prf.googlegroups.com>
Message-ID: <1192546253.808005.100090@q5g2000prf.googlegroups.com>

On Oct 15, 10:57 pm, John Machin <sjmac... at lexicon.net> wrote:
> On Oct 16, 2:33 am, Peter Bengtsson <pete... at gmail.com> wrote:
>
>
>
> > In UTF8, \u0141 is a capital L with a little dash through it as can be
> > seen in this image:http://static.peterbe.com/lukasz.png
>
> > I tried this:>>> import unicodedata
> > >>> unicodedata.normalize('NFKD', u'\u0141').encode('ascii','ignore')
>
> > ''
>
> > I was hoping it would convert it it 'L' because that's what it
> > visually looks like. And I've seen it becoming a normal ascii L before
> > in other programs such as Thunderbird.
>
> > I also tried the other forms: 'NFC', 'NFKC', 'NFD', and 'NFKD' but
> > none of them helped.
>
> > What am I doing wrong?
>
> The character in question is NOT composed (in the way that Unicode
> means) of an 'L' and a little slash; hence the concepts of
> "normalization" and "decomposition" don't apply.
>
> To "asciify" such text, you need to build a look-up table that suits
> your purpose. unicodedata.decomposition() is (accidentally) useful in
> providing *some* of the entries for such a table.

Thank you! That explains it.



From jusa.sj at gmail.com  Sun Oct 28 13:05:17 2007
From: jusa.sj at gmail.com (Juha S.)
Date: Sun, 28 Oct 2007 19:05:17 +0200
Subject: Weird AttributeError With Imports
Message-ID: <4724C14D.5090108@gmail.com>

I'm getting a "AttributeError: 'module' object has no attribute 'clock'" 
when importing a module from within two packages related to the line: 
"self.lastTime = time.clock()" in the __init__() of the class Time in 
the target module.

The module (mytime.py) sits in a package hierarchy such as the following 
"packageA.packageB.mytime", and imports the Python module "time" like 
this: "import time"

In another module outside of both packages (in a folder that holds the 
other package folders) I do this:


from packageA.packageB import mytime

timer = mytime.Time() #Throws the above AttributeError


Strangely it seems that if I create a Time object in mytime.py 
everything works perfectly. I have no idea why I'm getting this error, 
so any help is welcome!


From ricaraoz at gmail.com  Wed Oct 31 10:28:39 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Wed, 31 Oct 2007 11:28:39 -0300
Subject: two files into an alternate list
In-Reply-To: <47268B41.2000107@tim.thechases.com>
References: <aa405c1f0710290920v5c548269p24762e41790216cb@mail.gmail.com>
	<47268B41.2000107@tim.thechases.com>
Message-ID: <47289117.7040107@bigfoot.com>

Tim Chase wrote:
>>     i have a file :
>>          file 1:
>> 1
>> 2
>> 3
>> 4
>> 5
>> 6
>>
>> file2:
>> a
>> b
>> c
>> d
>> e
>> f
>> how do i make the two files into  list like this =
>> [1,a,2,b,3,c,4,d,5,e,6,f]
> 
>   from itertools import cycle
>   def serialize(*sources):
>     while True:
>       for source in sources:
>         yield source.next()
>   def stripper(iterator):
>     for thing in iterator:
>       yield thing.strip()
>   for thing in serialize(
>       stripper(file('file1.txt')),
>       stripper(file('file2.txt'))
>       ):
>     print thing
> 
> As a previous responder noted, there are a number of ways to
> treat the edge cases when the lengths of the files don't match.
> Since you left the condition underqualified, I chose to let it
> expire when the first one gave out rather than try and deal with
> the complications of such ambiguity.
> 
> -tkc
> 

Or maybe just :

>>> r = []
>>> for a, b in map(None
		, (int(i.strip('\n')) for i in open('file1.txt'))
		, (i.strip('\n') for i in open('file2.txt'))) :
	r.append(a)
	r.append(b)

>>> r
[1, 'a', 2, 'b', 3, 'c', 4, 'd', 5, 'e', None, 'f']





From nikbaer at gmail.com  Tue Oct 23 16:08:03 2007
From: nikbaer at gmail.com (nik)
Date: Tue, 23 Oct 2007 20:08:03 -0000
Subject: tracking/ordering log files
In-Reply-To: <1193165204.000752.268220@i38g2000prf.googlegroups.com>
References: <1193165204.000752.268220@i38g2000prf.googlegroups.com>
Message-ID: <1193170083.610513.149390@e34g2000pro.googlegroups.com>

On Oct 23, 11:46 am, nik <nikb... at gmail.com> wrote:
> Hi,
>
> I heard that there was a utility for keeping files and specifically
> log files organized, but haven't been able to find anything but the
> logging class. The logging class seems to help create the content of a
> log file, but unless I am missing something, it doesn't keep track of
> multiple log files.
>
> What I am looking for is some utility that allows me to create a log
> file, say test.log, when the program runs. Then the next time it runs
> it will see that test.log already exists and will create test.log.1 or
> something similiar. Ideally it would also be able to throw out log
> files that are older than a certain date or sequence, so if we got to
> creating the 10th file it would delete the first one and so on.
>
> I am sorry for the ambiguois question, but I was told this existed,
> can't find it and would like to know if I'm on a wild goose chase and
> should just put something together myself.
>
> Thank you,
> Nik


I think it is called "logfile rotation" and see some links about
log4py, but no description of what that is.
thanks



From mensanator at aol.com  Mon Oct 22 18:27:29 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 15:27:29 -0700
Subject: Iteration for Factorials
In-Reply-To: <1193089188.812952.241920@v29g2000prd.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193083810.302605.128630@y27g2000pre.googlegroups.com>
	<877ileq40i.fsf@rudin.co.uk>
	<1193089188.812952.241920@v29g2000prd.googlegroups.com>
Message-ID: <1193092049.638432.116180@q5g2000prf.googlegroups.com>

On Oct 22, 4:39 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> On Oct 22, 3:38 pm, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
>
>
>
>
>
> > tokl... at gmail.com writes:
> > > On 22 oct, 20:35, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
>
> > >> import operator
> > >> def fact(x):
> > >>     return reduce(operator.mul, xrange(1,x))
>
> > > Maybe:
>
> > > import operator
> > > def fact(x):
> > >     return reduce(operator.mul, xrange(2, x+1), 1)
>
> > Or just:
>
> > reduce(operator.mul, xrange(1, x), 1)
>
> Nope, still doesn't work:
>
> >>> def fact(x):
>
>         return reduce(operator.mul,xrange(1,x+1),1)

Excuse me, I mistyped your proposed solution. You had
xrange(1,x) not xrange(1,x+1). The former only returns
correct factorials for x==0 and x==1.

Sorry for the confusion.

>
> >>> fact(3)
> 6
> >>> fact(2)
> 2
> >>> fact(1)
> 1
> >>> fact(0)
> 1
> >>> fact(-1)
> 1
> >>> fact(-2)
> 1
> >>> fact(-3)
>
> 1
>
> fact() should raise an exception if x is negative.
>
> My variant of your original (same as Tim Chase's except the
> test for x==1 is not necessary):
>
> >>> def fact(x):
>
>         if x==0:
>                 return 1
>         else:
>                 return reduce(operator.mul,xrange(1,x+1))
>
>
>
> >>> fact(3)
> 6
> >>> fact(2)
> 2
> >>> fact(1)
> 1
> >>> fact(0)
> 1
> >>> fact(-1)
>
> Traceback (most recent call last):
>   File "<pyshell#40>", line 1, in <module>
>     fact(-1)
>   File "<pyshell#35>", line 5, in fact
>     return reduce(operator.mul,xrange(1,x+1))
> TypeError: reduce() of empty sequence with no initial value- Hide quoted text -
>
> - Show quoted text -




From fw3 at hotmail.co.jp  Wed Oct  3 13:23:00 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Wed, 3 Oct 2007 17:23:00 +0000
Subject: function to convert data into binary, hex and back.
In-Reply-To: <BLU107-W1F7D9BD82A606725A0AD7B4AF0@phx.gbl>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1413.1191364484.2658.python-list@python.org> 
	<fdvq7h$fbq$1@lust.ihug.co.nz>
	<BLU107-W1F7D9BD82A606725A0AD7B4AF0@phx.gbl>
Message-ID: <BLU107-W55E4CED333183BF7AF26AB4AF0@phx.gbl>





From: fw3 at hotmail.co.jpTo: python-list at python.orgSubject: RE: module confusionDate: Wed, 3 Oct 2007 17:14:19 +0000


Hi,  I am moving from Matlab to Python+numpy+scipy. In Matlab you can use function dec2bin, hex2dec, dec2hex bin2dec functions to convert decimal to binary and heximal etc. Before I try to implement my own function in Python, I want to know whether in Python such functionalities are already there. Thanks Frank

MSN???????EMI Artists?????????????? SCHOOL OF SCHOOL http://music.jp.msn.com/ 
_________________________________________________________________
?MSN????????????????????? ?????????????
http://video.msn.co.jp/rvr/default.htm
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071003/f6d801c8/attachment.html>

From deets at nospam.web.de  Tue Oct  9 17:43:12 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 23:43:12 +0200
Subject: Unexpected behaviour with HTMLParser...
In-Reply-To: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
References: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
Message-ID: <5n2avjFfh6h8U1@mid.uni-berlin.de>

Just Another Victim of the Ambient Morality schrieb:
>     HTMLParser is behaving in, what I find to be, strange ways and I would 
> like to better understand what it is doing and why.
> 
>     First, it doesn't appear to translate HTML escape characters.  I don't 
> know the actual terminology but things like &amp; don't get translated into 
> & as one would like.  Furthermore, not only does HTMLParser not translate it 
> properly, it seems to omit it altogether!  This prevents me from even doing 
> the translation myself, so I can't even working around the issue.
>     Why is it doing this?  Is there some mode I need to set?  Can anyone 
> else duplicate this behaviour?  Is it a bug?

Without code, that's hard to determine. But you are aware of e.g.

handle_entityref(name)
handle_charref(ref)

?

>     Secondly, HTMLParser often calls handle_data() consecutively, without 
> any calls to handle_starttag() in between.  I did not expect this.  In HTML, 
> you either have text or you have tags.  Why split up my text into successive 
> handle_data() calls?  This makes no sense to me.  At the very least, it does 
> this in response to text with &amp; like escape sequences (or whatever 
> they're called), so that it may successively avoid those translations.

That's the way XML/HTML is defined - there is no guarantee that you get 
text as whole. If you must, you can collect the snippets yourself, and 
on the next end-tag deliver them as whole.


>     Again, why is it doing this?  Is there some mode I need to set?  Can 
> anyone else duplicate this behaviour?  Is it a bug?

No. It's the way it is, because it would require buffering with 
unlimited capacity to ensure this property.

>     These are serious problems for me and I would greatly appreciate a 
> deeper understanding of these issues.

HTH, and read the docs.

Diez


From timr at probo.com  Thu Oct 25 02:22:52 2007
From: timr at probo.com (Tim Roberts)
Date: Thu, 25 Oct 2007 06:22:52 GMT
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
Message-ID: <bgd0i3lmeemshhs0bakbof4ati38i8cijn@4ax.com>

TheFlyingDutchman <zzbbaadd at aol.com> wrote:
>
>I am trying to install Python 2.5 on Windows XP. It installs into the
>root directory on C:\ instead of C:\Python25 which it shows by default
>as what it plans to install to. Selecting D:\Python25 on a previous
>iteration put the exe in D:\ and did not create a Python25 directory.

Where did you get the installer?  I've installed Python on Windows many,
many times, and have never seen this issue.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From gagsl-py2 at yahoo.com.ar  Wed Oct 24 01:15:59 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 24 Oct 2007 02:15:59 -0300
Subject: name space problem
References: <1193179470.243479.53270@q3g2000prf.googlegroups.com>
	<1193181625.770328.161650@v29g2000prd.googlegroups.com>
	<1193193278.364108.256770@y27g2000pre.googlegroups.com>
Message-ID: <op.t0orkx1ex6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 23 Oct 2007 23:34:38 -0300, BBands <bbands at gmail.com> escribi?:

> On Oct 23, 4:20 pm, marek.ro... at wp.pl wrote:

> I was trying to understand why it worked when written in, but not when
> included.

Not *included*. When you do `import doStuff` you dont "include" anything;  
this is what happens (simplified):

- Look into the already loaded modules; if a "doStuff" module already  
exists, return it.
- Search some directories on disk, looking for "doStuff.py". If found,  
load and execute it (remember that import, class, def, etc. are  
*executable* statements in Python).
- If still not found, raise an error.

So, after successful execution of `import doStuff`, you have a new name  
`doStuff` that refers to the imported module. It's not the "contents" of  
doStuff that gets "included" into the current module; doStuff exists by  
itself as a separate module, and you get a name that refers to it.

>> I think the right solution would be not to use 'a' as a global
>> variable, but rather to pass it as an explicit parameter to the
>> function.
>
> Does doing this make a copy of a?

No! Python never makes a copy unless you explicitely say so.

>> In module doStuff:
>>
>> def doStuff(a):
>>     # some calcs
>>     a.b = 0
>>
>> In the main module:
>>
>> import doStuff
>> # ...
>> doStuff.doStuff(a)
>
> In my real ap a is quite large...

It doesn't matter. `a` is just a name, referencing an object. It's never  
"copied" unless you specifically ask for it. Passing objects as arguments  
is absolutely common, and the right thing to do in this case; it's  
efficient, don't worry...

-- 
Gabriel Genellina



From bj_666 at gmx.net  Tue Oct 23 18:43:49 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 22:43:49 GMT
Subject: How to find out which functions exist?
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
	<5o76tgFld8c9U10@mid.uni-berlin.de>
	<1193176280.003067.269950@i13g2000prf.googlegroups.com>
Message-ID: <5o7bp5Fld8c9U12@mid.uni-berlin.de>

On Tue, 23 Oct 2007 21:51:20 +0000, mrstephengross wrote:

> Ok, I see how to use issubclass(). How can I get a list of classes
> present in the file?

import module
from inspect import getmembers, isclass

classes = getmembers(module, isclass)


Ciao,
	Marc 'BlackJack' Rintsch


From alpha04 at netvigator.com  Thu Oct  4 19:09:43 2007
From: alpha04 at netvigator.com (Andrey)
Date: Thu, 4 Oct 2007 16:09:43 -0700
Subject: Mysql class works like php
Message-ID: <fe3rsa$fqp$1@sea.gmane.org>

Hi

just a quick question about using MySQL module... are there any api / class 
available to give a higher level in working with Mysql in python?
such as
db.fetch_array(),
db.fetch_rows(),
db.query(),
for eachrow in db.fetch_array():
    xxxx

just as easy as PHP?
I think someone might already done this, so i dont have to re-invent the 
wheel, but i have no luck in google, so wondering if anyone might know such 
thing exists...

thanks
Andrey 





From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Oct 13 14:25:31 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 13 Oct 2007 20:25:31 +0200
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
	<feoni6$h74$02$1@news.t-online.com>
	<13gvqvb6shueveb@corp.supernews.com>
	<mailman.151.1192226542.927.python-list@python.org>
Message-ID: <5ncgsjFh6pd4U1@mid.individual.net>

Martin Marcher wrote:

> No need to speek of plus addressing or older messaging systems.

But don't disallow a plus in the localpart. Many do.

Regards,


Bj?rn

-- 
BOFH excuse #180:

ether leak



From python.list at tim.thechases.com  Wed Oct  3 09:43:18 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 03 Oct 2007 08:43:18 -0500
Subject: enumerate overflow
In-Reply-To: <5mheq7Fd78r2U2@mid.uni-berlin.de>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
Message-ID: <47039C76.2030305@tim.thechases.com>

>> in python2.4, i read lines from a file with
>>
>> for lineNum, line in enumerate(f): ...
>>
>> However, lineNum soon overflows and starts counting backwards. How do
>> i force enumerate to return long integer?
> 
> Most probably you can't, because it is a C-written function I presume.
> 
> But as python 2.4 has generators, it's ease to create an enumerate yourself:
> 
> 
> def lenumerate(f):
>      i = 0
>      for line in f:
>          yield i, line
>          i += 1


I'd consider this a bug:  either in the implementation of 
enumerate(), or in the documentation

http://docs.python.org/lib/built-in-funcs.html#l2h-24

which fails to mention such arbitrary limitations.  The 
documentation describes what you create as an lenumerate() function.

Most likely, if one doesn't want to change the implementation, 
one should update the documentation for enumerate() to include a 
caveat like xrange() has

http://docs.python.org/lib/built-in-funcs.html#l2h-80

"""
Note: xrange() is intended to be simple and fast. Implementations 
may impose restrictions to achieve this. The C implementation of 
Python restricts all arguments to native C longs ("short" Python 
integers), and also requires that the number of elements fit in a 
native C long.
"""

While yes, it's easy enough to create the above lenumerate 
generator (just as it's only slightly more work to create an 
lxrange function), it would be good if the docs let you know that 
you might need to create such a function

-tkc





From fred.sells at adventistcare.org  Wed Oct 10 17:00:56 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Wed, 10 Oct 2007 17:00:56 -0400
Subject: RMI with Pyro et al
In-Reply-To: <470cf535$0$25952$ba4acef3@news.orange.fr>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38E4@acesxch01.ADVENTISTCORP.NET>

I need a simple client/server architecture with clients on linux and servers on windows.  There is no UI in this part, just business rules and access control.

Pyro seems pretty cool for this due to it's simplicity.  I'm just starting with it and have not been able to get the server side to "see" changes to a module.  The only way I can stop the server is with the Task Manager.  Can anyone offer some insight into
1. stopping/starting the server - perhaps as a windows service.
2. getting the server to recognize new modules "on the fly", i.e. when the .py file is changed.

I'm not doing any UI stuff, so I don't want to deal with HTTP and a webserver.  I also do not have any RDBMS involved. I like the idea of passing objects the way pyro does it.

If anyone thinks there is a better python tool for doing this, I would like to know.

---------------------------------------------------------------------------
The information contained in this message may be privileged and / or
confidential and protected from disclosure. If the reader of this message is
not the intended recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited. If you
have received this communication in error, please notify the sender
immediately by replying to this message and deleting the material from any
computer.
---------------------------------------------------------------------------


From aleax at mac.com  Sun Oct 14 23:25:15 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 14 Oct 2007 20:25:15 -0700
Subject: int to str in list elements..
References: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
Message-ID: <1i5z49f.m3i1xijzrco5N%aleax@mac.com>

Abandoned <besturk at gmail.com> wrote:

> Hi..
> I have a list as a=[1, 2, 3 .... ] (4 million elements)
> and
> b=",".join(a)
> than
> TypeError: sequence item 0: expected string, int found
> I want to change list to  a=['1','2','3'] but i don't want to use FOR
> because my list very very big.
> I'm sorry my bad english.
> King regards

Try b=','.join(map(str, a)) -- it WILL take up some memory (temporarily)
to build the huge resulting string, but there's no real way to avoid
that.

It does run a bit faster than a genexp with for...:

brain:~ alex$ python -mtimeit -s'a=range(4000*1000)'
'b=",".join(map(str,a))'
10 loops, best of 3: 3.37 sec per loop

brain:~ alex$ python -mtimeit -s'a=range(4000*1000)' 'b=",".join(str(x)
for x i
n a)'
10 loops, best of 3: 4.36 sec per loop


Alex


From lucaberto at libero.it  Fri Oct 12 02:17:27 2007
From: lucaberto at libero.it (luca72)
Date: Thu, 11 Oct 2007 23:17:27 -0700
Subject: cxfreeze
Message-ID: <1192169847.156883.84260@q5g2000prf.googlegroups.com>

Hello i use under linux cx-freeze
My python program import a small module were i set the encoding to iso
8859-1.
When i make the executable with cxfreeze and i run it i get this
error:
Traceback (most recent call last):
  File "/home/luca72/Desktop/Luca/python/cx_Freeze-3.0.3/initscripts/
Console.py", line 27, in <module>
    exec code in m.__dict__
  File "main.py", line 4, in <module>
  File "form_pack_impl.py", line 13, in <module>
  File "sitecustomize.py", line 3, in <module>
LookupError: unknown encoding: iso-8859-1

Can you help me

Regards

Luca



From sunburned.surveyor at gmail.com  Mon Oct 22 13:12:36 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: Mon, 22 Oct 2007 10:12:36 -0700
Subject: Automatic Generation of Python Class Files
Message-ID: <1193073156.493809.184110@z24g2000prh.googlegroups.com>

I was thinking of a way I could make writing Python Class Files a
little less painful. I was considering a Ptyhon script that read a
file with a list of property names and method names and then generated
a skeleton class file.

I was even thinking of automatically generating the shell for doc
strings and epydoc tags.

Is there existing scripts that do something like this? If not, I will
try to come up with something. If I'm sucessful I'll release the code
under the GPL and will report back to the list.

However, I thought I would check here first so that I don't reinvent
the wheel.

Thanks,

Scott Huey



From matthieu.brucher at gmail.com  Sun Oct 28 11:56:51 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Sun, 28 Oct 2007 16:56:51 +0100
Subject: how to convert tuple to a "list of single values" ?
In-Reply-To: <4724AB51.6050702@gmail.com>
References: <4724AB51.6050702@gmail.com>
Message-ID: <e76aa17f0710280856s37d551ebk459910a735a83580@mail.gmail.com>

Use :

      something = self._point2ClientCoord (p1, p2 )
      dc.SetClippingRegion (*something)

Matthieu

2007/10/28, stef mientki <stef.mientki at gmail.com>:
>
> hello,
>
> The next piece of code bothers me:
>
>       ptx, pty, rectWidth, rectHeight = self._point2ClientCoord (p1, p2 )
>       dc.SetClippingRegion ( ptx, pty, rectWidth, rectHeight )
>
> Because I want to write it in 1 line,
> and without the use of intermediate variables (for which I have to
> invent names ;-)
> like this:
>
>     dc.SetClippingRegion ( self._point2ClientCoord (p1, p2 ) )
>
> Now that doesn't work, because
> - dc.SetClippingRegion() requires 4 integer parameters
> - _point2ClientCoord()  returns a tupple of 4 integers
>
> I can't think of a solution,
> is there any ?
>
> thanks,
> Stef Mientki
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
French PhD student
Website : http://miles.developpez.com/
Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071028/8a766798/attachment.html>

From mrstephengross at hotmail.com  Tue Oct 23 17:10:04 2007
From: mrstephengross at hotmail.com (mrstephengross)
Date: Tue, 23 Oct 2007 21:10:04 -0000
Subject: How to find out which functions exist?
Message-ID: <1193173804.937071.278110@e9g2000prf.googlegroups.com>

Let's say I have a python file with a base class, and a few derived
classes:

class Base:
  pass

class Derived1(Base):
  pass

class Derived2(Base):
  pass

Is there a way I can find out the classes that have been derived from
Base?

Thanks,
--Steve



From heikki at osafoundation.org  Fri Oct 12 18:15:11 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Fri, 12 Oct 2007 15:15:11 -0700
Subject: ANN: M2Crypto 0.18.2
Message-ID: <3qydnby-HdRsbJLanZ2dnUVZ_vWdnZ2d@comcast.com>

M2Crypto is the most complete Python wrapper for OpenSSL featuring RSA,
DSA, DH, HMACs, message digests, symmetric ciphers (including AES); SSL
functionality to implement clients and servers; HTTPS extensions to
Python's httplib, urllib, and xmlrpclib; unforgeable HMAC'ing
AuthCookies for web session management; FTP/TLS client and server;
S/MIME; ZServerSSL: A HTTPS server for Zope and ZSmime: An S/MIME
messenger for Zope.

http://chandlerproject.org/Projects/MeTooCrypto

Changelog:

- typedef Py_ssize_t was insufficiently guarded, now follows PEP 353.
This prevented building on at least Red Hat Linux and Debian Linux
(unstable).

-- 
  Heikki Toivonen


From bj_666 at gmx.net  Tue Oct 23 15:15:47 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 19:15:47 GMT
Subject: Can't refer to base class attribute?
References: <1193165646.296297.152000@y27g2000pre.googlegroups.com>
Message-ID: <5o6vj2Fld8c9U8@mid.uni-berlin.de>

On Tue, 23 Oct 2007 18:54:06 +0000, mrstephengross wrote:

> I've got a Base class with an attribute "foo" (of type Foo), and a
> Derived class (derived from Base). In Derived's constructor, I try to
> refer to Base.foo, but python complains:
>   AttributeError: class Base has no attribute 'foo'

Because the class `Base` doesn't have an attribute `foo`.  Just believe
the error message.  :-)

> Any ideas? (code below)
> 
> === CODE ===
> #!/usr/bin/python
> 
> class Foo:
>   def __init__ (self):
>     self.x = 3
> 
> class Base:
>   def __init__ (self):
>     self.foo = Foo()


`Base` has no `foo` attribute but *instances* of `Base` have.

> class Derived(Base):
>   def __init__(self):
>     Base.__init__(self)
>     Base.foo.x = 5

Instances of `Derived` have a `foo` attribute inherited from `Base`. So
the last line should be ``self.foo.x = 5``.

Ciao,
	Marc 'BlackJack' Rintsch


From marlenemiller at worldnet.att.net  Wed Oct 10 00:39:32 2007
From: marlenemiller at worldnet.att.net (Marlene Miller)
Date: Wed, 10 Oct 2007 04:39:32 GMT
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <8IYOi.658994$p47.379449@bgtnsc04-news.ops.worldnet.att.net>

> Can anyone explain:
>
> (1) its origin

>From the Bibliographic Notes of Chapter 12 Continuations in a Functional
Language, Theories of Programming Languages by John C. Reynolds, page 370:

"A history of the repeated discoveries of continuations (occurring largely
in the context of functional languages) is given in Reynolds [1993];
relevant original papers include those by van Wijngaarden [1996], F. L.
Morris [1993], Strachey and Wadsworth [1974], J. H. Morris [1972], Fischer
[1972; 1993], and Abdali [1976]. The operations callcc and throw first
appeared in Scheme, but are descendents of Landin's [1965b] "J-operator".
Both the continuation-passing transformation from direct to continuation
semantics and defunctionalization were described, in the setting of programs
for interpreting eager-evaluation functional languages, by Reynolds
[1972a]."

"Beginning with the implementation of Scheme [Sussman and Steele Jr., 1975]
continuations and the continuation-passing transformation have played a
major role in the design of compilers. More recently, this topic has been
explored at book length by Appel [1992]."

Reynolds [1993] The Discoveries of Continuations.
van Wijngaarden [1996] Recursive Definition of Syntax and Semantics
F. L. Morris [1993] The Next 700 Formal Language Descriptions
Strachey and Wadsworth [1974] Continuations, A Mathematical Semantics for
Handling Full Jumps.
J. H. Morris [1972] A Bonus from van Wijngarden's Device
Fischer [1972, 1993] Lambda Calculus Schemata
Abdali [1976] A Lambda Calculus Model of Programming Languages - I. Simple
Constructs, II. Jumps and Procedures
Sussman and Steele Jr. [1975] SCHEME: An Interpreter for Extended Lambda
Calculus
Compiling With Continuations, Andrew W. Appel, 2007

- - - - - - - - - -
> (2) its syntax and semantics in emacs lisp, common lisp, scheme

The Scheme Programming Language, R. Kent Dybvig
3.3 Continuations
5.5 Continuations
http://www.scheme.com/tspl3/

Scheme and the Art of Programming, Springer and Friedman
Chapter 16 Introduction to Continuations
Chapter 17 Using Continuations

- - - - - - - - - - - - -
> (6) any good readable references that explain it lucidly ?

1. Programming Languages: Application and Interpretation, Shriram
Krishnamurthi
Part VII Continuations
http://www.cs.brown.edu/~sk/Publications/Books/ProgLangs/2007-04-26/plai-2007-04-26.pdf

2. Essentials of Programming Languages, Friedman, Wand and Haynes
Chapter 7 Continuation-Passing Interpreters
Chapter 8 Continuation-Passing Style
http://www.cs.brown.edu/~sk/Publications/Books/ProgLangs/2007-04-26/plai-2007-04-26.pdf

3. Theories of Programming Languages, John C. Reynolds
5.7 Continuation Semantics [of imperative languages]
Chapter 12 Continuations in a Functional Language
http://www.cs.indiana.edu/eopl/

>From the Bibliographic Notes of Chapter 5 Failure, Input-Output and
Continuations, Theories of Programming Languages, John C. Reynolds

"Most of the literature on continuations discusses the concept in the
setting of functional languages (where we will return to continuations in
Section 12.1). However, the properties of continuation semantics for
imperative languages are described, perhaps to excess, by Reynolds [1977]."

Reynolds [1977] Semantics of the Domain of Flow Diagrams




From find at my.address.elsewhere  Tue Oct  9 20:47:13 2007
From: find at my.address.elsewhere (Matthias Blume)
Date: Tue, 09 Oct 2007 19:47:13 -0500
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<m2641g1mgn.fsf@my.address.elsewhere>
	<1191958673.182295.207190@22g2000hsm.googlegroups.com>
Message-ID: <m21wc323u6.fsf@my.address.elsewhere>

gnuist006 at gmail.com writes:

> Matthias, thanks for the reference, but I dont have access to an
> engineering library. I would appreciate, if you have access to paper/
> scanner or electronic copy to help many of us out, you are
> not just helping me but many will thank you.

Given that you seem to be hanging out at the internets, I expect you
do know how to use the google...


From deets at nospam.web.de  Mon Oct 22 08:28:05 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 14:28:05 +0200
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <5o3jalFl0n43U1@mid.uni-berlin.de>

Py-Fun wrote:

> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.

Show us your attempts, and we might suggest a fix. Because otherwise this
sounds suspiciously like homework.

Diez


From kay.schluehr at gmx.net  Sun Oct  7 11:49:14 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Sun, 07 Oct 2007 08:49:14 -0700
Subject: Top Programming Languages of 2013
In-Reply-To: <mailman.1621.1191737112.2658.python-list@python.org>
References: <mailman.1621.1191737112.2658.python-list@python.org>
Message-ID: <1191772154.784564.138370@r29g2000hsg.googlegroups.com>

On Oct 7, 8:05 am, Dick Moores <r... at rcblue.com> wrote:
> <http://www.redcanary.ca/view/top-programming>
>
> Dick Moores

Despite my doubts that Ajax and .NET will be programming languages in
2013 a more interesting question is: what could push Python forward
s.t. it eats such a large piece of the PL cake?



From mail at microcorp.co.za  Fri Oct  5 02:19:04 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 5 Oct 2007 08:19:04 +0200
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz><874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>	<mailman.1489.1191464586.2658.python-list@python.org><87hcl7r1ga.fsf@benfinney.id.au>	<fe1p1i$2a6$1@sea.gmane.org><019401c8065c$13e82d00$03000080@hendrik>
	<fe2e95$63f$2@sea.gmane.org>
Message-ID: <015701c80722$0886e5c0$03000080@hendrik>

"Steve Holden" <steve at holdenweb.com> wrote:

> Hendrik van Rooyen wrote:
> > "Steve Holden" <ste...web.com> wrote:
> >
> >> religious issues for me. It's more like "This problem has a cross head,
> >> so I'll need a Philips screwdriver".
> >
> > As long as it is not a Pozidrive, that is a commendable attitude.
> >
> I said cross head, not Pozidriv (tm). But then I have been nown to use a
> Manchester screwdriver[1] on occasion.

Philistine!

But in a way, it is more honest than the Free State method of tightening a bolt-

You tighten enthusiastically until it strips, then go a quarter turn back to
undo
the damage.

BTW, in case you have been wondering - a Free State Micrometer is a
plumber's adjustable pipe wrench.

- Hendrik



From hniksic at xemacs.org  Wed Oct 10 17:02:55 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 10 Oct 2007 23:02:55 +0200
Subject: unpickle from URL problem
References: <vSZOi.5979$rD1.4849@trnddc01> <873awjgeo8.fsf@mulj.homelinux.net>
	<pt7Pi.8044$8F.1186@trnddc05>
Message-ID: <87wstuhedc.fsf@mulj.homelinux.net>

Alan Isaac <aisaac at american.edu> writes:

> Hrvoje Niksic wrote:
>> The first upload breaks the file.  You uploaded it in (presumably
>> FTP's) text mode, which changes \n -> \r\n.  But you download it using
>> http, which specifies no such conversion in the opposite direction.
>
> No: I used binary upload both time.
> (Unless my ftp client is broken, and I think not.)
>
> The first example simply keeps the Windows eols,
> which are present in the pickled file on my Windows machine.

That's why it doesn't work on Unix, the \r's are a problem when not
removed by the platform's IO layer.  Because of the newline silliness,
the notion of a "text file" is, unfortunately, quite platform-specific
even when the file is pure ASCII, so pickle protocol 0 being textual
is a bit misleading regarding the resulting file's portability.  :-(


From deets at nospam.web.de  Wed Oct 31 20:36:26 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 01 Nov 2007 01:36:26 +0100
Subject: setting variables in outer functions
In-Reply-To: <87ir4mj24t.fsf@mulj.homelinux.net>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
	<Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
	<1193830119.542006.137750@o38g2000hse.googlegroups.com>
	<Xns99DA7B469B79Fduncanbooth@127.0.0.1>
	<1193870968.747606.281180@50g2000hsm.googlegroups.com>
	<mailman.714.1193871602.13605.python-list@python.org>
	<87ir4mj24t.fsf@mulj.homelinux.net>
Message-ID: <5osld0Fof544U1@mid.uni-berlin.de>

Hrvoje Niksic schrieb:
> "Chris Mellon" <arkanes at gmail.com> writes:
> 
>> I have no idea why someone who already has a working, object system
>> would want to implement their own on top of closures.
> 
> This subthread is getting ridiculous -- closures are *not* useful only
> for implementing object systems!  The object system thing is just a
> method of teaching abstractions popularized by SICP.  Abstractions
> normally taken for granted, such as objects, or even expression
> evaluation, are implemented from scratch, using only the most basic
> primitives available.  In a Lisp-like language with lexical scope, the
> most basic storage primitive is the lexical environment itself[1].
> 
> In real-life code, closures are used to implement callbacks with
> automatic access to their lexical environment without the need for the
> bogus additional "void *" argument one so often sees in C callbacks,
> and without communication through global variables.  If the callbacks
> can access variables in the outer scope, it's only logical (and
> useful) for them to be able to change them.  Prohibiting modification
> reduces the usefulness of closures and causes ugly workarounds such as
> the avar[0] pattern.
> 
> If closures were useful only for implementing bogus object systems,
> neither they nor "nonlocal" would have made it to Python in the first
> place.
> 

There's a nice saying about this:

"""
   The venerable master Qc Na was walking with his student, Anton. 
Hoping to
prompt the master into a discussion, Anton said "Master, I have heard that
objects are a very good thing - is this true?"  Qc Na looked pityingly at
his student and replied, "Foolish pupil - objects are merely a poor man's
closures."

   Chastised, Anton took his leave from his master and returned to his cell,
intent on studying closures.  He carefully read the entire "Lambda: The
Ultimate..." series of papers and its cousins, and implemented a small
Scheme interpreter with a closure-based object system.  He learned much, and
looked forward to informing his master of his progress.

   On his next walk with Qc Na, Anton attempted to impress his master by
saying "Master, I have diligently studied the matter, and now understand
that objects are truly a poor man's closures."  Qc Na responded by hitting
Anton with his stick, saying "When will you learn? Closures are a poor man's
object."  At that moment, Anton became enlightened.
"""

http://people.csail.mit.edu/gregs/ll1-discuss-archive-html/msg03277.html


I do love closures, and I sometimes pitty python for not allowing to set 
outer scope variables.

But then, it's because it lacks a variable declaration scheme (as e.g. 
javascript has), so _some_ design decision had to be made distinguishing 
variable declarations from pure references. And I can live with the 
consequences.

Diez


From steve at holdenweb.com  Wed Oct  3 22:22:30 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 22:22:30 -0400
Subject: module confusion
In-Reply-To: <fe141n$9u8$1@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au> <fe141n$9u8$1@lust.ihug.co.nz>
Message-ID: <47044E66.6030304@holdenweb.com>

Lawrence D'Oliveiro wrote:
> In message <874ph8sdhx.fsf at benfinney.id.au>, Ben Finney wrote:
> 
>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:
>>
>>> On my Gentoo system:
>>>
>>>     >>> import os
>>>     >>> os.path
>>>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
>>>
>>> It's just a variable that happens to point to the posixpath module.
>> There's no "pointing" going on. It's another name bound to the same
>> object, of equal status to the 'posixpath' name.
>>
>> Python doesn't have pointers, and even "variable" is a misleading term
>> in Python. Best to stick to "name" and "bound to".
> 
> In Python, all names _are_ variables. They are not "bound" to objects. The
> value of os.path is a pointer. It's implemented as a pointer, it has all
> the semantics of a pointer.
> 
> Honestly, why do people react to the word "pointer" as though computers have
> to wear underwear to conceal something shameful going on in their nether
> regions?

Because they have been told by their church that all God-fearing names 
do what names have always done in programming languages, which is to 
describe areas of memory of a particular size, type and locality.

You and I know that the semantics of Python names are precisely those of 
(to use an Algol 68 term, unless I am mistaken) automatically 
dereferenced pointers to objects of arbitrary type. I actually think 
that's one of the neatest things about Python, and I believe it's no 
accident that both Tim Peters and I were Icon enthusiasts.

But the rest of the world clings to its illusions.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From besturk at gmail.com  Wed Oct 31 17:03:59 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 31 Oct 2007 14:03:59 -0700
Subject: 3 number and dot..
In-Reply-To: <1193863088.980629.127030@o38g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<1193863088.980629.127030@o38g2000hse.googlegroups.com>
Message-ID: <1193864639.887794.205490@50g2000hsm.googlegroups.com>

On Oct 31, 10:38 pm, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 31, 2:58 pm, Abandoned <best... at gmail.com> wrote:
>
> > Hi..
> > I want to do this:
> > for examle:
> > 12332321 ==> 12.332.321
>
> > How can i do?
> >>> x = (12332321,)
> >>> while (x[0]>0): x=divmod(x[0],1000)+x[1:]
> ...
> >>> x
> (0, 12, 332, 321)
> >>> ".".join(map(str,x[1:]))
>
> '12.332.321'
>
> -- Paul

Hmm.
When the number as 1023 the result is 1.23 :(
How can i fix it ?



From python.list at tim.thechases.com  Sun Oct 28 09:01:08 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 28 Oct 2007 08:01:08 -0500
Subject: iterating over the other and finding the greatest
In-Reply-To: <aa405c1f0710272039t280b918at1e2a9810eceee522@mail.gmail.com>
References: <aa405c1f0710272039t280b918at1e2a9810eceee522@mail.gmail.com>
Message-ID: <47248814.4040601@tim.thechases.com>

> have carry out a process a>b then i should print the line and if b>c then i
> should print the line and c>d then i should print....... like this i have to
> continue.say for eg: 43<387 so the first row is omitted, 387 is greater then
> 98 so i can print the line second row...
> my code:
>  fh = open('364010_spacing','r')
> for lines in fh.readlines():
>         data = lines.strip().split('\t')
>         start =data[0].strip()
>         end = data[1].strip()
>         values = data[2].strip()
>         id = data[3].strip()
>         if a > b :#hanged up here
>                         print lines

though you don't really define a/b/c anywhere, other than
obliquely referencing values in your 3rd column, I presume they
map to the lines in the file a=1st-line, b=2nd-line, etc.

You also don't disclose when you want the printing to happen,
whether you want to print the highest at each line as you iterate
over them (in your example, printing a,b,b,b,e,e,e,e or if you
want to find the maximum and then print it at the end (just
printing line e once).

I don't know if you want to do if more than one row has the
maximum value.  Do you want to print all of the matching lines?
or just the first or last one encountered?

The code below iterates over the file, finding the maximum of the
3rd column, and then printing the first line that matched that.

  for i,line enumerate(open(filename, 'r')):
    c  = int(line.rstrip('\n').split('\t')[2])
    if i == 0:
      highest_id = c
      best_match = line
    else:
      if c > highest_id:
        highest_id = c
        best_match = line
  print line

In your code, you parsed start/end, but didn't use them for
anything...vestigial code?

-tkc








From gagsl-py2 at yahoo.com.ar  Thu Oct  4 19:07:33 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 04 Oct 2007 20:07:33 -0300
Subject: enumerate overflow
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
Message-ID: <op.tzo3uvfzx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 03 Oct 2007 08:46:31 -0300, <crwe at post.cz> escribi?:

> in python2.4, i read lines from a file with
>
> for lineNum, line in enumerate(f): ...
>
> However, lineNum soon overflows and starts counting backwards. How do
> i force enumerate to return long integer?

(what kind of files are you using? enumerate overlows after more than two  
billion lines... is that "soon" for you?)

I'm afraid neither iterate nor itertools.count will generate a long  
integer; upgrading to Python 2.5 won't help. I think the only way is to  
roll your own counter:

lineNum = 0
for line in f:
   ...
   lineNum += 1

-- 
Gabriel Genellina



From bj_666 at gmx.net  Tue Oct 23 05:22:37 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 09:22:37 GMT
Subject: How to implement function like this?
References: <ffkba5$1u6$1@wake.carmen.se>
Message-ID: <5o5sqtFld8c9U3@mid.uni-berlin.de>

On Tue, 23 Oct 2007 16:28:37 +0800, Yinghe Chen wrote:

> Hello gurus,
> 
> I have a question, a function like below, it is implemented by me, :)
> 
> def funcA(tarray):
>        a = [2,3,4]
>         if len(tarray) >=3:
>              return a[0],a[1], a[2]
>         elif len(tarray) == 2:
>             return a[0],a[1], funcB(1)[0]
>         elif len(tarray) == 1:
>            return a[0], funcB(2)[0], funcB(2)[1]
>         else:
>             return funcB(3)[0], funcB(3)[1], funcB(3)[2]
> 
> 
> The return of funcA is always 3 values, but depending on the length of 
> tarray, I need to return different values accordingly.  if tarray lenght is 
> 2, I need to get another one value from funcB, if tarray length is 0, I need 
> to get all three values from funcB.

Untested:

def func_a(t_array):
    result = [2, 3, 4]
    t_array_length = len(t_array)
    remaining_length = len(result) - t_array_length
    if t_array_length < len(result):
        result = (result[:t_array_length]
                  + func_b(remaining_length)[:remaining_length])
    return tuple(result)

Ciao,
	Marc 'BlackJack' Rintsch


From steve at holdenweb.com  Wed Oct  3 23:57:57 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 23:57:57 -0400
Subject: racism kontrol
In-Reply-To: <47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>	<mailman.1481.1191444294.2658.python-list@python.org>
	<47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <fe1oc1$ds$1@sea.gmane.org>

Wildemar Wildenburger wrote:
> Steve Holden wrote:
>> Wildemar Wildenburger wrote:
>>> (I aplogize for that last remark. I have nothing against turkish 
>>> people, I just couldn't let the opportunity for a mean joke slip.)
>> Does this mean you are an equal-opportunity racist?
>>
> Yeah! Well observed. :)
> Although "equal-opportunity misantropist" might be a more fitting term. 
> Whatever suits me to express my hatred towards humans. Race, gender, 
> text editor ... you name it.
> 
> /W
> (By the way: Accusing a German of racism is almost too easy an insult. 
> Not that I had taken any, just saying.)

Sorry, you just failed the German test by evidencing a sense of humor 
(or do I remember you warning me about that?)

You are an AI named Alan Turing, and I claim the ?5,000 prize.

It's like accusing a Yorkshireman of meanness (Americans: "being 
cheap"): it's tautologous ;-)

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From see.signature at no.spam  Fri Oct  5 04:42:23 2007
From: see.signature at no.spam (Eric Brunel)
Date: Fri, 05 Oct 2007 10:42:23 +0200
Subject: tkinter question
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
Message-ID: <op.tzpugxp2wepdt4@ericb.pragmadev>

On Fri, 05 Oct 2007 05:16:14 +0200, goldtech <goldtech at worldpost.com>  
wrote:

> This works OK. But I notice that if I enlarge the window after the
> script has run, the white listbox only gets "so" big while the grey
> background enlarges.
>
> Is there a way to have it all white when I enlarge a window - like
> what normally happens?
>
>
>
> from Tkinter import *
> root = Tk()
> root.title("Dirty Words")
> scrollbar = Scrollbar(root)
> scrollbar.pack(side=RIGHT, fill=Y)
> listbox = Listbox(root, bg='white', font = "Courier 16", width=60)
> listbox.pack()

=> listbox.pack(fill=BOTH, expand=1)

> i='123456789abcdefghijklmnopqrstuvwxyz'
> for x in range(10):
>     listbox.insert(END, i)
> listbox.config(yscrollcommand=scrollbar.set)
> scrollbar.config(command=listbox.yview)
> mainloop()

BTW, even for something that simple, using the grid geometry manager may  
be easier... It is at least easier to explain: don't ask me what the  
expand=1 option means, I never understood it... I just add or remove it  
when the pack doesn't do what I want. The sticky option with grid is  
easier to handle.

HTH
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From basilisk96 at gmail.com  Fri Oct 19 22:24:20 2007
From: basilisk96 at gmail.com (Basilisk96)
Date: Sat, 20 Oct 2007 02:24:20 -0000
Subject: where do I need to "tab"?
In-Reply-To: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
References: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
Message-ID: <1192847060.804494.303600@t8g2000prg.googlegroups.com>

Tab is not the issue here. By my powers of deduction, I can see that
you are running this code in Python version previous to 2.5, because
the construct "true_clause if condition else false_clause" did not
exist until 2.5. It's a neat little construct, I highly recommend you
upgrade now :)

-Basilisk96



From mensanator at aol.com  Thu Oct 18 22:59:29 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Thu, 18 Oct 2007 19:59:29 -0700
Subject: vote for Python - PLEASE
In-Reply-To: <mailman.193.1192751640.13605.python-list@python.org>
References: <mailman.193.1192751640.13605.python-list@python.org>
Message-ID: <1192762769.971770.297830@e9g2000prf.googlegroups.com>

On Oct 18, 6:12 pm, Monty Taylor <mo... at inaugust.com> wrote:
> Hey everybody,
>
> MySQL has put up a poll onhttp://dev.mysql.comasking what your primary
> programming language is.

But it doesn't ask that, it asks what your
primary programming language is FOR DEVELOPING
MYSQL APPLICATIONS.

In my case, there is no such language (even though
I primarily use Python) BECAUSE I DON'T USE MYSQL.


> Even if you don't use MySQL - please go stick
> in a vote for Python. I'm constantly telling folks that Python needs
> more love, but PHP and Java are kicking our butts...
>
> (I know the world would be a better place if the poll were honest,

There is dishonestly and there's outright lying

> but
> I'd rather that people got the message that they should do more python
> development work!)

Maybe the Python community doesn't need your help.

>
> Thanks!
> Monty




From marcpp at gmail.com  Thu Oct 11 19:47:30 2007
From: marcpp at gmail.com (marc)
Date: Fri, 12 Oct 2007 01:47:30 +0200
Subject: Diferent files: GUI (wxpython) Program
References: <fem5g9$mia$1@aioe.org>
	<1192145293.118368.214950@k35g2000prh.googlegroups.com>
Message-ID: <femcm9$b87$2@aioe.org>

cmpython at gmail.com escribi?:
> On Oct 11, 5:44 pm, marc <mar... at gmail.com> wrote:
>> Hi why I can call an .py GUI (wxpython) from a program and control it?
>> I'm newbie in python.
> 
> Sorry, could you restate that?  Explain again what you want to do.
> 
I would to call a python file that contains a GUI (with wx) from a file 
program.
The programs that I've do, contains a GUI and the code to run it in the 
same file, but I when need to modify a GUI file (I use wxglade) I need 
to delete all code lines (except the GUI code lines) and it difficult 
the program.


From joshua.davies at travelocity.com  Mon Oct  8 10:17:36 2007
From: joshua.davies at travelocity.com (joshua.davies at travelocity.com)
Date: Mon, 08 Oct 2007 07:17:36 -0700
Subject: Variable scoping rules in Python?
Message-ID: <1191853056.970304.209350@k79g2000hse.googlegroups.com>

Ok, I'm relatively new to Python (coming from C, C++ and Java).  I'm
working on a program that outputs text that may be arbitrarily long,
but should still line up, so I want to split the output on a specific
column boundary.  Since I might want to change the length of a column,
I tried defining the column as a constant (what I would have made a
"#define" in C, or a "static final" in Java).  I defined this at the
top level (not within a def), and I reference it inside a function.
Like this:

COLUMNS = 80

def doSomethindAndOutputIt( ):
  ...
  for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
    print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
    print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
    ..

etc. etc.  It works fine, and splits the output on the 80-column
boundary just like I want.

Well, I decided that I wanted "COLUMNS = 0" to be a special "don't
split anywhere" value, so I changed it to look like this:

COLUMNS = 80

def doSomethindAndOutputIt( ):
  ...
  if COLUMNS == 0:
    COLUMNS = len( output[ 0 ] )

  for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
    print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
    print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
    ..

Now, when I run it, I get the following error:

Traceback (most recent call last):
  File "Test.py", line 140, in ?
    doSomethingAndOutput( input )
  File "Test.py", line 123, in doSomethingAndOutput
    if COLUMNS == 0:
UnboundLocalError: local variable 'COLUMNS' referenced before
assignment

I went back and re-read chapter 13 of "Learning Python", which talks
about variable scoping rules, and I can't figure out why Python is
saying this variable in Unbound.  It works if I insert:

  global COLUMNS

before the "if" statement... but I don't understand why.  Is the
interpreter scanning my entire function definition before executing
it, recognizing that I *might* assign COLUMNS to a value, and deciding
that it's a local on that basis?



From hainguyen2x at yahoo.com  Thu Oct 11 12:40:10 2007
From: hainguyen2x at yahoo.com (hainguyen2x at yahoo.com)
Date: Thu, 11 Oct 2007 09:40:10 -0700
Subject: how to get the NT event log properties with OnObjectReady() with
	python
Message-ID: <1192120810.094251.193810@19g2000hsx.googlegroups.com>

I'm trying to get a notification from the NT event for any new event
using the DispatchWithEvents() function. Everything seems to be
working the way I wanted, but I don't know how to get the properties
of the event (ie. event type, message, etc.) from the OnObjectReady()
callback.

class SinkClass(object):
    def OnObjectReady(self, *args): #self may be the wmi_sink object
        print "OnObjectReady callback ..."
        print self #.TargetInstance.Message
        print args[0]

    def OnCompleted(self, *args):
        print "OnCompleted callback..."
        print args #.TargetInstance.Message

    def OnObjectPut(self, *args):
        print "OnObjectPut callback..."

    def OnProgress(self, *args):
        print "OnProgress callback..."

wmi = win32com.client.GetObject("winmgmts:
{impersonationLevel=impersonate,(security)}!//./root/cimv2")
wmi_sink =
win32com.client.DispatchWithEvents("WbemScripting.SWbemSink",SinkClass)
wmi.ExecNotificationQueryAsync(wmi_sink,"SELECT * FROM
__InstanceCreationEvent where TargetInstance ISA 'Win32_NTLogEvent'")


The argument args in the OnObjectReady() seems to be the interface to
a com object (may be the event object itself).
I want to read the properties (ie. message, eventID, type, etc)  of
the triggered NT event.

Please help.



From monty at inaugust.com  Thu Oct 18 19:12:37 2007
From: monty at inaugust.com (Monty Taylor)
Date: Thu, 18 Oct 2007 16:12:37 -0700
Subject: vote for Python - PLEASE
Message-ID: <4717E865.6090706@inaugust.com>

Hey everybody,

MySQL has put up a poll on http://dev.mysql.com asking what your primary 
programming language is. Even if you don't use MySQL - please go stick 
in a vote for Python. I'm constantly telling folks that Python needs 
more love, but PHP and Java are kicking our butts...

(I know the world would be a better place if the poll were honest, but 
I'd rather that people got the message that they should do more python 
development work!)

Thanks!
Monty


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Mon Oct 15 15:51:54 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Mon, 15 Oct 2007 21:51:54 +0200
Subject: Normalize a polish L
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<MPG.217dbfcba9423866989713@news.individual.de>
Message-ID: <5nhumqFig4buU1@mid.individual.net>

Thorsten Kampe wrote:

> The 'L' is actually pronounced like the English "w"...

'?' originally comes from "L" (<http://en.wikipedia.org/wiki/?>) and
is AFAIK transcribed so. 

Also, a friend of mine writes himself "Lukas" (pronounced L-) even
though in Polish his name is ?ukas (short Wh-).

Regards,


Bj?rn

-- 
BOFH excuse #126:

it has Intel Inside



From mensanator at aol.com  Wed Oct 31 01:32:50 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 30 Oct 2007 22:32:50 -0700
Subject: choose from a list
In-Reply-To: <1193791188.338141.123020@v3g2000hsg.googlegroups.com>
References: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
	<1193770225.374384.52290@k79g2000hse.googlegroups.com>
	<1193782113.429067.132740@57g2000hsv.googlegroups.com>
	<1193785411.032673.147860@v3g2000hsg.googlegroups.com>
	<1193791188.338141.123020@v3g2000hsg.googlegroups.com>
Message-ID: <1193808770.776610.50280@o80g2000hse.googlegroups.com>

On Oct 30, 7:39?pm, barronmo <barro... at gmail.com> wrote:
> I didn't know "result" was a list!  

I don't use MySQL but that's how others work.
Each list item is a record, each record a tuple
of field values.

> Can all that info be stored in a list?  

If you don't fetch too many records at once.
This is a test of my word database using ODBC
and MS-ACCESS (the SQL is very simple since
all the actual work is done in MS-ACCESS, Python
is just retrieving the final results).

import dbi
import odbc
con = odbc.odbc("words")
cursor = con.cursor()
cursor.execute("SELECT * FROM signature_anagram_summary")
results = cursor.fetchall()

Here, results (the recipient of .fetchall) is a list of tuples.
The contents are:

[(9, 10, 'anoretics', '10101000100001100111000000'),
(9, 10, 'atroscine', '10101000100001100111000000'),
(9, 10, 'certosina', '10101000100001100111000000'),
(9, 10, 'creations', '10101000100001100111000000'),
(9, 10, 'narcotise', '10101000100001100111000000'),
(9, 10, 'ostracine', '10101000100001100111000000'),
(9, 10, 'reactions', '10101000100001100111000000'),
(9, 10, 'secration', '10101000100001100111000000'),
(9, 10, 'tinoceras', '10101000100001100111000000'),
(9, 10, 'tricosane', '10101000100001100111000000')]

> How do the columns work?  

I don't know, I don't get column names. It looked like
from your example that you can use names, I would have
to use indexes, such as results[3][2] to get 'creations'.
Maybe MySQL returns dictionaries instead of tuples.

> I was curious to see what the data
> looked like but I can't seem to print "result" from the prompt.  Do
> variables used inside functions live or die once the function
> executes?  

Yeah, they die. You would have to have the function return
the results list and indx, then you could use it's contents
as criteria for further queries.

So you might want to say

name_find_results,indx = name_find(namefrag)

> If they die, how do I get around this?  

Add 'return results,indx' to the function. Or better still,
just return the record the user selected
    return results[indx]
You wouldn't need indx anymore since there's only 1 record.

> I tried defining 'r
> = ""' in the module before the function and then using it instead of
> "result" but that didn't help.
>
> Mike




From steve at REMOVE-THIS-cybersource.com.au  Tue Oct 23 13:25:00 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 23 Oct 2007 17:25:00 -0000
Subject: Life-time of temporary variables in list comprehensions
References: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
Message-ID: <13hsbjceeiauj39@corp.supernews.com>

On Tue, 23 Oct 2007 17:02:48 +0000, beginner wrote:

> My test shows that if c is not defined before the list comprehension, it
> will be created in the list comprehension; if it is defined before the
> list comprehension, the value will be overwritten. In other words, temp
> variables are not local to list comprehensions.

That's right.

> My question is why is this and is there any way to make c local to list
> comp?

It was a design decision that is now regretted. There is no way for you 
to make it local to the list comp except to wait for a new version of 
Python that behaves in the way you want.

Or you can look at generator expressions, which are written just like 
list comprehensions except with round brackets (). They are not quite the 
same thing, but you can often use one in place of the other.


-- 
Steven.


From bblais at bryant.edu  Sun Oct 21 14:14:26 2007
From: bblais at bryant.edu (Brian Blais)
Date: Sun, 21 Oct 2007 14:14:26 -0400
Subject: compiler module bug?
In-Reply-To: <op.t0j67vm8x6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <7DEB606B-7856-4140-ADA9-4083EC22D380@bryant.edu>
	<op.t0j4vshfx6zn5v@a98gizw.cpe.telecentro.net.ar>
	<01E5EB0B-6904-438C-B9DD-B27310C0381D@bryant.edu>
	<op.t0j67vm8x6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <3183F644-5C73-4193-B19E-D2564AD2F1F3@bryant.edu>

On Oct 21, 2007, at Oct 21:2:05 PM, Gabriel Genellina wrote:

> The parseFile function does exactly that, along with this comment:

thanks!



		bb
-- 
Brian Blais
bblais at bryant.edu
http://web.bryant.edu/~bblais



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/28d7add0/attachment.html>

From jeremy+complangpython at jeremysanders.net  Tue Oct  2 01:38:23 2007
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Tue, 02 Oct 2007 06:38:23 +0100
Subject: Wrapper functions and arguments
Message-ID: <fdslgf$rq$1@gemini.csx.cam.ac.uk>

One little issue I have is to write a little wrapper which can generally
pass standard and keyword arguments to a callee:

def a(x, y, z):
  print x, y, z
def b(x, y, z='fruitbat')
  print x, y, z

for func in a, b:
  def wrapper(func=func, *args, **argsk):
     # do something
     func(*args, **argsk)
  x.append(wrapper)

x[0](1, 2, 3)
x[1](1, 2)
...

Is there any way to do this? Can you capture arguments in a tuple and dict,
but still receive other keyword arguments? The only solution I found was to
implement wrapper as a class (like I would in c++):

class wrapper(object):
  def __init__(self, func):
    self.func = func
  def __call__(self, *args, **argsk):
    self.func(*args, **argsk)

Jeremy

-- 
Jeremy Sanders
http://www.jeremysanders.net/


From hniksic at xemacs.org  Fri Oct  5 11:00:39 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Fri, 05 Oct 2007 17:00:39 +0200
Subject: remove list elements..
References: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
Message-ID: <87odfdr4h4.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> I do this use FOR easly but the speed very imported for me. I want
> to the fastest method please help me.

Can you post the code snippet that was too slow for you?  Are the
lists sorted?


From michele.simionato at gmail.com  Sat Oct 27 01:42:38 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Fri, 26 Oct 2007 22:42:38 -0700
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
Message-ID: <1193463758.768348.25590@o3g2000hsb.googlegroups.com>

On Oct 25, 5:07 pm, Adam Donahue <adam.dona... at gmail.com> wrote:
> As an exercise I'm attempting to write a metaclass that causes an
> exception to be thrown whenever a user tries to access
> 'attributes' (in the traditional sense) via a direct reference.

Well, now thanks to Bruno and the others you know everything about
attribute access in Python. Still, you may be interested in this
recipe, which involves __setattr__ and non __getattribute__:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/252158

   Michele Simionato



From george.sakkis at gmail.com  Tue Oct  9 02:06:44 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 09 Oct 2007 06:06:44 -0000
Subject: property question
In-Reply-To: <mailman.5.1191907259.916.python-list@python.org>
References: <mailman.5.1191907259.916.python-list@python.org>
Message-ID: <1191910004.776779.223170@50g2000hsm.googlegroups.com>

On Oct 9, 1:20 am, "Manu Hack" <manuh... at gmail.com> wrote:
> hi all,
>
> If I have a class A with A.x, A.y, A.z.  A.y and A.z are property and
> in order to compute the value of them, A.y depends on A.x while A.z
> depends on A.y and A.x.  If I call A.y, and A.z, the value A.y would
> be computed twice.  Is there a smart way to avoid that as to A.y will
> be recomputed only if A.x has been changed?  Now I can define more
> variables to keep track of what is changed but when there are more
> variables and the dependency becomes more involved it could be very
> complicated.  Thanks a lot.
>
> Manu

I haven't needed to use it myself so far, but PyCells (http://
pycells.pdxcb.net/) seems it might fit the bill.

George



From Scott.Daniels at Acm.Org  Thu Oct 11 22:59:09 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Thu, 11 Oct 2007 19:59:09 -0700
Subject: remove header line when reading/writing files
In-Reply-To: <1192148900.396062.122780@i13g2000prf.googlegroups.com>
References: <1192143175.137620.319470@q5g2000prf.googlegroups.com>
	<470EAFA2.2060409@tim.thechases.com>
	<mailman.115.1192145052.927.python-list@python.org>
	<1192148900.396062.122780@i13g2000prf.googlegroups.com>
Message-ID: <13gtok8ea3b2dbb@corp.supernews.com>

timaranz at gmail.com wrote:
> ...
> for zipfile in filelist:
>     zfiter = iter(gzip.Gzipfile(zipfile,'r'))
>     zfiter.next()  # ignore header line
>     for i, line in enumerate(fziter):
>         outfile.write(line)
Or even:
   writes = outfile.write
   for zipfile in filelist:
       zfiter = iter(gzip.Gzipfile(zipfile,'r'))
       zfiter.next()  # ignore header line
       for line in zfiter:
           writes(line)


From paul.nospam at rudin.co.uk  Mon Oct 22 16:38:05 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Mon, 22 Oct 2007 21:38:05 +0100
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193083810.302605.128630@y27g2000pre.googlegroups.com>
Message-ID: <877ileq40i.fsf@rudin.co.uk>

tokland at gmail.com writes:

> On 22 oct, 20:35, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
>
>> import operator
>> def fact(x):
>>     return reduce(operator.mul, xrange(1,x))
>
> Maybe:
>
> import operator
> def fact(x):
>     return reduce(operator.mul, xrange(2, x+1), 1)

Or just:

reduce(operator.mul, xrange(1, x), 1)





From sipickles at hotmail.com  Thu Oct 18 14:13:53 2007
From: sipickles at hotmail.com (Simon Pickles)
Date: Thu, 18 Oct 2007 19:13:53 +0100
Subject: Running another python interpreter
In-Reply-To: <47179DBA.8040407@hotmail.com>
References: <47179DBA.8040407@hotmail.com>
Message-ID: <4717A261.7090303@hotmail.com>

Well, I tried:
   
    os.spawnv(os.P_NOWAIT, "gateway.py", ())

and got:

    OSError: [Errno 8] Exec format



Simon Pickles wrote:
> Hello,
>
> I have several servers which link to each other (and of course, to clients).
>
> At present, I am starting them in turn manually. Is there a way with 
> python to say, "open gateway.py in a new interpreter window"?
>
> I looked at execv, etc, but they seem to replace the current process. 
> Ah, maybe I need spawnv().
>
> I am on windows i386, python 2.5
>
> Thanks
>
> si
>   


From cjw at sympatico.ca  Fri Oct 19 08:54:34 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Fri, 19 Oct 2007 08:54:34 -0400
Subject: class vs type
Message-ID: <ffa9eb$amu$1@ger.gmane.org>

In Python Types and Objects, Shalabh 
Chaturvedi says (in the Python 3.0 
documentation - New Style Classes)

"The term class is traditionally used to 
imply an object created by the class 
statement. However, classes are now 
synonymous with types. Built-in types 
are usually not referred to as classes. 
This book prefers using the term type 
for both built-in and user created types."

Do we need two different words to 
describe what is essentially the same thing?

Colin W.



From george.sakkis at gmail.com  Sat Oct 13 10:06:22 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Sat, 13 Oct 2007 14:06:22 -0000
Subject: ConnectionClosedError
In-Reply-To: <mailman.161.1192265103.927.python-list@python.org>
References: <1192220524.837248.173230@i13g2000prf.googlegroups.com>
	<mailman.161.1192265103.927.python-list@python.org>
Message-ID: <1192284382.892195.234440@e9g2000prf.googlegroups.com>

On Oct 13, 4:21 am, "Hendrik van Rooyen" <m... at microcorp.co.za> wrote:
>
> If restarting the server sorts it, why don't you run the server as a
> subprocess in a higher level script, and exit with an error code
> if the error strikes?

Well as I mentioned the process doesn't exit, it is just unresponsive
from the client's side, so this doesn't solve it.

> It may be that the reason for your hang up is also a
> threading issue - it could be that the server is alive but
> that some critical thread has been killed by the error.
> But here I am guessing...

I don't create explicitly any thread in my server code but Pyro itself
is multithreaded. Unfortunately I don't have the resources to start
digging in Pyro's internals..

George



From rdm at rcblue.com  Mon Oct 29 08:23:54 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 05:23:54 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <1193657385.878620.35180@d55g2000hsg.googlegroups.com>
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
Message-ID: <20071029122404.817D11E4012@bag.python.org>

At 04:29 AM 10/29/2007, Filip Wasilewski wrote:
>On Oct 29, 11:26 am, Dick Moores <r... at rcblue.com> wrote:
> > Windows XP Pro, Python 2.5.1
> >
> > import msvcrt
> > while True:
> >      if msvcrt.kbhit():
> >          key = msvcrt.getch()
> >          if key == 'Enter'
> >          do something
> >
> > Is there a way to catch the pressing of the 'Enter' key?
>
>Yes there is. Just open the Python shell and see what is being
>returned by `getch` or `getche` functions when you press Enter:
>
> >>> import msvcrt
> >>> msvcrt.getch()
>'\r'

Terrific! Thanks.

>Also try to avoid `busy waiting` and calling msvcrt.kbhit in a loop
>without a sleep statement.
>I don't know your case but probably this
>should be enough:
>
>while True:
>     if msvcrt.getch() == '\r':

I tried it and find that without the msvcrt.kbhit the first key I hit 
doesn't do anything. I have to hit that key again, or another key.

Dick



From f.braennstroem at gmx.de  Sat Oct 20 06:30:21 2007
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Sat, 20 Oct 2007 10:30:21 +0000
Subject: pyparsing batch file
References: <mailman.135.1192650615.13605.python-list@python.org>
	<1192653445.765147.204870@y27g2000pre.googlegroups.com>
Message-ID: <ffce76$eto$2@ger.gmane.org>

Hi Paul,

Paul McGuire wrote:

> On Oct 17, 4:47 pm, Fabian Braennstroem <f.braennstr... at gmx.de> wrote:
> <snip>
>> Unfortunately, it does not parse the whole file names with
>> the underscore and I do not know yet, how I can access the
>> line with 'define/boundary-conditions'. Every 'argument' of
>> that command should become a separate python variable!?
>> Does anyone have an idea, how I can achieve this!?
>> Regards!
>> Fabian
> 
> You are trying to match "keps1500_500.dat" with the expression
> "Word(alphanums)".  Since the filename contains characters other than
> alphas and numbers, you must add the remaining characters ("." and
> "_") to the expression.  Try changing:
> 
> write= Word(alphanums)
> 
> to:
> 
> write= Word(alphanums+"._")
> 
> 
> To help you to parse "/define/boundary-conditions in velocity-inlet 10
> 0.1 0.1 no 1", we would need to know just what these arguments are,
> and what values they can take.  I'll take a wild guess, and propose
> this:
> 
> real = Combine(integer + "." + integer)
> defineBoundaryConditions = "/define/boundary-conditions" + \
>     oneOf("in out inout")("direction") + \
>     Word(alphanums+"-")("conditionName") + \
>     integer("magnitude") + \
>     real("initialX") + \
>     real("initialY") + \
>     oneOf("yes no")("optional") + \
>     integer("normal")
> 
> (Note I am using the new notation for setting results names,
> introduced in 1.4.7 - simply follow the expression with ("name"),
> instead of having to call .setResultsName.)
> 
> And here is a slight modification to your printout routine, using the
> dump() method of the ParseResults class:
> 
> for tokens in defineBoundaryConditions.searchString(data):
>     print
>     print "Boundary Conditions = "+ tokens.conditionName
>     print tokens.dump()
>     print
>     print 50*"-"
> 
> 
> prints:
> 
> Boundary Conditions = velocity-inlet
> ['/define/boundary-conditions', 'in', 'velocity-inlet', '10', '0.1',
> '0.1', 'no', '1']
> - conditionName: velocity-inlet
> - direction: in
> - initialX: 0.1
> - initialY: 0.1
> - magnitude: 10
> - normal: 1
> - optional: no

Great! Thanks for the very good explanation! 

Regards!
Fabian







From python at rcn.com  Tue Oct 23 11:39:30 2007
From: python at rcn.com (Raymond Hettinger)
Date: Tue, 23 Oct 2007 08:39:30 -0700
Subject: Set operations on object attributes question
In-Reply-To: <1193147226.862501.97240@v23g2000prn.googlegroups.com>
References: <1193147226.862501.97240@v23g2000prn.googlegroups.com>
Message-ID: <1193153970.762375.262430@k35g2000prh.googlegroups.com>

[Duane]
> LoTuples1 = [(1,1,0),(1,2,1),(1,3,3)]
> Set1=set(LoTuples1)
> LoTuples2 = [(2,1,3),(2,2,4),(2,3,2)]
> Set2=set(LoTuples2)
>
> What I would like to be able to do is:
>
> Set3 = Set1union(Set2)
> Set3.intersection(Set2, <use object[2]>)
>
> to return:
> set([(2,1,3), (1,3,3)])
>
> How can one do this operation?

Conceptually, there is more than one operation going on. First,
finding the attributes shared in both sets:
   ca = set(t[2] for t in LoTuples1) & set(t[2] for t in LoTuples2)
which gives:
   set([3])

Second, find any tuple which has that attribute (including multiple
results for the same attribute):
   set(t for t in (LoTuples1 + LoTuples2) if t[2] in ca)
which returns:
   set([(2, 1, 3), (1, 3, 3)])

Wanting multiple results for the same attribute value (i.e. both
(2,1,3) and (1,3,3) have 3 in the second position) is why multiple
steps are needed; otherwise, the behavior of intersection() is to
return a single representative of the equivalence class.


Raymond



From bignose+hates-spam at benfinney.id.au  Wed Oct  3 06:23:38 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 03 Oct 2007 20:23:38 +1000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz>
Message-ID: <874ph8sdhx.fsf@benfinney.id.au>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:

> On my Gentoo system:
> 
>     >>> import os
>     >>> os.path
>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
> 
> It's just a variable that happens to point to the posixpath module.

There's no "pointing" going on. It's another name bound to the same
object, of equal status to the 'posixpath' name.

Python doesn't have pointers, and even "variable" is a misleading term
in Python. Best to stick to "name" and "bound to".

-- 
 \                "Crime is contagious ... if the government becomes a |
  `\    lawbreaker, it breeds contempt for the law."  -- Justice Louis |
_o__)                                                         Brandeis |
Ben Finney


From steven.bethard at gmail.com  Sun Oct  7 23:41:18 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 07 Oct 2007 21:41:18 -0600
Subject: Problem of Readability of Python
In-Reply-To: <1i5mh1z.7kw0621m8tpmpN%aleax@mac.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
	<13giput3mhtvb6c@corp.supernews.com>
	<1i5mh1z.7kw0621m8tpmpN%aleax@mac.com>
Message-ID: <EIqdnW0Ci-pDO5TanZ2dnUVZ_h3inZ2d@comcast.com>

Alex Martelli wrote:
> Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:
>> class Record(object):
>>     __slots__ = ["x", "y", "z"]
>>
>> has a couple of major advantages over:
>>
>> class Record(object):
>>     pass
>>
>> aside from the micro-optimization that classes using __slots__ are faster
>> and smaller than classes with __dict__.
>>
>> (1) The field names are explicit and self-documenting;
>> (2) You can't accidentally assign to a mistyped field name without Python
>> letting you know immediately.
[snip]
> If I had any real need for such things, I'd probably use a metaclass (or
> class decorator) to also add a nice __repr__ function, etc...

Yep.  That's what the recipe I posted [1] does. Given a class like::

     class C(Record):
         __slots__ = 'x', 'y', 'z'

it adds the most obvious __init__ and __repr__ methods. Raymond's 
NamedTuple recipe [2] has a similar effect, though the API is different.

[1] http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502237
[2] http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/500261

STeVe


From andrzej.s at gazeta.pl  Tue Oct  9 06:14:36 2007
From: andrzej.s at gazeta.pl (Andrzej S.)
Date: Tue, 09 Oct 2007 12:14:36 +0200
Subject: Python and UML
In-Reply-To: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>
References: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>
Message-ID: <fefk53$hs2$1@inews.gazeta.pl>

aine_canby at yahoo.com wrote:
> I'd like to start working with and learning more with UML. Can anyone
> suggest any freeware design software that I might use to do this? I
> also have
> Visio installed on my computer if thats of any use...


Does not Visio meet your requirements? It's quite powerfull UML design 
  tool.


From hniksic at xemacs.org  Thu Oct 18 12:02:56 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 18:02:56 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
Message-ID: <87y7e01kcv.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> import cPickle as pickle
> a="{2:3,4:6,2:7}"
> s=pickle.dumps(a, -1)
> g=pickle.loads(s);
> print g
> '{2:3,4:6,2:7}'
>
> Thank you very much for your answer but result is a string ??

Because you gave it a string.  If you give it a dict, you'll get a
dict:

>>> import cPickle as pickle
>>> a = {1:2, 3:4}
>>> s = pickle.dumps(a, -1)
>>> g = pickle.loads(s)
>>> g
{1: 2, 3: 4}

If your existing database already has data in the "{...}" format, then
eval it only the first time.  Then you'll get the dict which you can
cache thruogh the use of dumps/loads.


From tjreedy at udel.edu  Mon Oct 29 17:18:42 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 29 Oct 2007 17:18:42 -0400
Subject: setting variables in outer functions
References: <4B003AF0-D445-48A3-BE5D-08382B1B4018@comhem.se>
Message-ID: <fg5ini$7v1$1@ger.gmane.org>


"Tommy Nordgren" <tommy.nordgren at comhem.se> wrote in message 
news:4B003AF0-D445-48A3-BE5D-08382B1B4018 at comhem.se...
| Given the following:
| def outer(arg)
|      avar = ''
|      def inner1(arg2)
|           # How can I set 'avar' here ?

You cannot at present.  You can only mutate mutable outer vars:

def outer(arg):
    avar = ['']
    def inner(argi):
        avar[0] = str(argi)
...





From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 25 12:35:22 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 25 Oct 2007 18:35:22 +0200
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
Message-ID: <4720c5c3$0$20084$426a74cc@news.free.fr>

Adam Donahue a ?crit :
> As an exercise I'm attempting to write a metaclass that causes an
> exception to be thrown whenever a user tries to access
> 'attributes' (in the traditional sense) via a direct reference.

I guess you're new to Python, and coming from either C++ or Java. Am I 
wrong ?-)

And without even reading further, I can tell you're doing something 
pretty complicated that just don't work.

(Ok, I cheated - I did read further !-)

> Consider:
> 
>     class X( object ):
>         y = 'private value'
>         def get_y( self ): return self.y
> 
> Normally one can access y here via:
> 
>     X().y
> 
> or
> 
>     X().get_y()
> 
> I want the former case, however, to throw an exception.

So called "private" or "protected" attributes (IOW, implementation stuff 
the client code should not mess with) are denoted by a single leading 
underscore. IOW, 'y' should be '_y'. It won't of course prevent anyone 
to access the attribute, but then it's not your responsability anymore.

I know this sound surprising to C++/Java programmers, but experience 
prove that it just work.


Now if all you want is to reproduce the Java systematic-getter-setter 
dance - that is, use getters/setters 'just in case' you'd want to 
refactor (which, FWIW, is the only rationale behind accessors), you just 
don't need this with Python. We do have computed attributes here, so the 
simplest thing is to start with a plain attribute, then refactor it into 
a computed one if and when the need arises. This is *totally* 
transparent to client code.




> I figured the way to do this would be to introduce a metaclass that
> overrides the default __getattrribute__ call and throws an exception.
> So my first attempt was something like:
> 
>     class XType( type ):
>         def __my_getattribute__( self, name ):
>              raise AttributeError()
>         def __init__( klass, name, bases, dict ):
>             super( XType, klass ).__init__( name, bases, dict )
>             setattr( klass, '__getattribute__',
> klass.__my_getattribute__ )
> 
> But whereas the X().y attribute behaves as I intend, the X().get_y()
> returns raises that exception as well:

Indeed. __getattribute__ is invoked for *each and every* attribute 
lookup - including methods, since methods are attributes too. FWIW, 
__getattribute__ it's something you should not mess with unless you know 
what you're doing and why you're doing it.

> 
> So it looks as if 'attribute' here means any key in self.__dict__,

The '.' is the lookup operator. As soon as you have obj.anyname, you do 
an attribute lookup (wether it fails or succeeds is another question). 
And __getattribute__ is the implementation for this operator. So given 
how you wrote your custom __getattribute__, you just made attribute 
lookup impossible.

And FWIW, attribute lookup is much more complex than just looking up the 
instance's __dict__ - it also looks up the class __dict__, then the 
parent's classes __dict__, then look for a custom __getattr__ method 
(which is used when the attribute has not been found so far). And if the 
attribute found is a class attribute that implements the descriptor 
protocol, then __getattribute__ is responsible for invoking this 
protocol. IOW, __getattribute__ is one of the most critical magic methods.

> whether referenced via self.var, self.__dict__['var'] (because this
> references __dict__), or getattr( self, 'var' ) (which is the same as
> a direct self.var access, I believe).

Practically, yes.

> 
> So I tried:
> 
>     class XType( type ):
>         def __my_getattribute__( self, name ):
>             if name != '__dict__':
>                 raise AttributeError()
>             return super( self.__class__,
> self ).__getattribute__( name )
>         def __init__( klass, name, bases, dict ):
>             super( XType, klass ).__init__( name, bases, dict )
>             setattr( klass, '__getattribute__',
> klass.__my_getattribute__ )
> 
> This allows me to access X().__dict__ directly (and then
> X().__dict__['y']), but it still limits caller access to the get_y()
> method.

cf above.

> It sounds then like the "solution" will be to check whether the name
> referenced is called __dict__ or is a method or function type,
> otherwise throw the exception, and to ensure all internal calls are
> handled via self.__dict__[name] not self.name.

My my my. Trouble ahead...

> Something like:
> 
>     import types
>     class XType( type ):
>         def __my_getattribute__( self, name ):
>             if name != '__dict__' and not
> isinstance( self.__dict__[name], types.FunctionType ):
>                 raise AttributeError()
>             return super( self.__class__,

*never* use self.__class__ (or type(self) etc) when calling super(). You 
*really* want to pass the exact class here - else you'll have *very* 
strange results.

> self ).__getattribute__( name )
>         def __init__( klass, name, bases, dict ):
>             super( XType, klass ).__init__( name, bases, dict )
>             setattr( klass, '__getattribute__',
> klass.__my_getattribute__ )

My my my...

> Of course this is imperfect as a user can simply bypass the
> __getattribute__ call too and access __dict__ directly,

Indeed. The fact is that there's just no way to prevent client code to 
access your implementation. Period. So relax, stop fighting against the 
langage, and learn to use it how it is.

> but it's
> closer to what I was thinking.  The problem is the return value for
> functions is not bound - how do I bind these to the associated
> instance?

func.__get__(obj, obj.__class__)

But that should not be done when the function is an instance attribute - 
only when it's a class one. And any class attribute implementing the 
descriptor protocol should be treated that way.

> (Caveat - I am not sure whether using __get__ itself in lieu of
> __getattribute__ would be a better solution; but I would like to see
> how binding would be done here for general knowledge.)

(simplified) In the normal case, when the attribute looked up happens to 
be a class attribute and implements the descriptor protocol, 
__getattribute__ returns attr.__get__(obj, type(obj). What attr.__get__ 
returns is up to whoever implemented type(attr). In the case of 
functions, anyway, __get__ returns a method object, which is a callable 
object wrapping the function, the target object and the class. When 
called, this method object insert the target object (or class if it's a 
classmethod) in front of the args list, and invoke the function with 
this new args list. Which is why you need to declare self (or cls) as 
first argument of a 'method' but not to explicitely pass it at call time.

Anyway : forget about "real" privacy in Python (FWIW, neither Java nor 
C++ have "real" privacy - there are ways to bypass access restrictors in 
both languages), just use the single leading underscore convention and 
you'll be fine. And don't write explicit accessors - in fact, don't 
write accessors at all until you need them, and when you need them, use 
a property or a custom descriptor object, so it's transparant to client 
code.

HTH


From martin at v.loewis.de  Mon Oct  1 18:30:20 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 02 Oct 2007 00:30:20 +0200
Subject: Python and SSL
In-Reply-To: <xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
Message-ID: <470174FC.5060709@v.loewis.de>

>      Actually, the SSL certificate has to be in valid format, because
> OpenSSL does require that.  

Sure. However, in the first message, the OP mentioned that he gets error
503. That tells me that the SSL connection had been established
successfully, and that he was actually seeing a HTTP error, not an SSL
one (unless he made up that error code, of course).

Regards,
Martin


From Shawn at Milochik.com  Wed Oct 10 13:02:45 2007
From: Shawn at Milochik.com (Shawn Milochik)
Date: Wed, 10 Oct 2007 13:02:45 -0400
Subject: [Tutor] matching a street address with regular expressions
In-Reply-To: <4704DD04.4020304@bigfoot.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
Message-ID: <2dc0c81b0710101002l53febbbay4741a50b7548f958@mail.gmail.com>

On 10/4/07, Ricardo Ar?oz <ricaraoz at gmail.com> wrote:
> Christopher Spears wrote:
> > One of the exercises in Core Python Programming is to
> > create a regular expression that will match a street
> > address.  Here is one of my attempts.
> >
> >>>> street =  "1180 Bordeaux Drive"
> >>>> patt = "\d+ \w+"
> >>>> import re
> >>>> m = re.match(patt, street)
> >>>> if m is not None: m.group()
> > ...
> > '1180 Bordeaux'
> >
> > Obviously, I can just create a pattern "\d+ \w+ \w+".
> > However, the pattern would be useless if I had a
> > street name like 3120 De la Cruz Boulevard.  Any
> > hints?
> >
>

Also, that pattern can be easily modified to have any number of words
at the end:
patt = "\d+ (\w+){1,}"
This would take care of 3120 De la Cruz Boulevard.


From kadeko at gmail.com  Wed Oct 31 11:34:16 2007
From: kadeko at gmail.com (looping)
Date: Wed, 31 Oct 2007 08:34:16 -0700
Subject: Creating a temporary file in Python
In-Reply-To: <6ux*naIYr@news.chiark.greenend.org.uk>
References: <1193832119.872710.108920@k79g2000hse.googlegroups.com>
	<6ux*naIYr@news.chiark.greenend.org.uk>
Message-ID: <1193844856.163400.172320@50g2000hsm.googlegroups.com>

On Oct 31, 2:16 pm, Sion Arrowsmith <si... at chiark.greenend.org.uk>
wrote:
> " [ ... ] Whether the name can be used to open the file a second time,
> while the named temporary file is still open, varies across platforms
> (it can be so used on Unix; it cannot on Windows NT or later)."

I didn't notice this limitation when reading the doc, thanks to point
me to it.

So for the future newbie that look something like this, here is my
final code:

fd, filename = tempfile.mkstemp(suffix='.sql')
f = os.fdopen(fd, 'wb')
try:
    f.write(txt.encode('cp1252'))
    f.close()
    p = Popen([SQL_PLUS, '-s', dsn,
        '@', SQL_PLUS_SCRIPT, filename],
        stdout=PIPE, stderr=STDOUT)
    p.wait()
finally:
    os.remove(filename)




From nagle at animats.com  Mon Oct 15 01:26:38 2007
From: nagle at animats.com (John Nagle)
Date: Mon, 15 Oct 2007 05:26:38 GMT
Subject: Simple HTML template engine?
In-Reply-To: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <iSCQi.45164$RX.32456@newssvr11.news.prodigy.net>

allen.fowler wrote:
> Hello,
> 
> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
> 
> No need for caching, template compilation, etc.
> 
> Speed is not a major issue.
> 
> I just need looping and conditionals. Template inheritance would be a
> bonus.

     HTMLTemplate is a minimal system for that sort of thing.
It doesn't drag in some big "framework".

					John Nagle


From bj_666 at gmx.net  Wed Oct 17 08:19:32 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 17 Oct 2007 12:19:32 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
Message-ID: <5nmcuhFiva37U2@mid.uni-berlin.de>

On Wed, 17 Oct 2007 13:41:06 +0200, Hrvoje Niksic wrote:

> Duncan Booth <duncan.booth at invalid.invalid> writes:
> 
>> Hrvoje Niksic <hniksic at xemacs.org> wrote:
>>
>>> I've recently been bitten by [rebinding the var to what __iadd__
>>> returns], and I don't understand the reasoning behind __iadd__'s
>>> design.  I mean, what is the point of an *in-place* add operation
>>> (and others) if it doesn't always work in-place?
>>> 
>> A very common use case is using it to increment a number:
> 
> I'm aware of that; but remember that there's still __add__.  It would
> be sufficient for numbers not to implement __iadd__.  And, in fact,
> they already don't:
> 
>>>> 1 .__add__(1)
> 2
>>>> 1 .__iadd__(1)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'int' object has no attribute '__iadd__'
> 
> The current implementation of += uses __add__ for addition and
> __iadd__ for addition that may or may not be in-place.  I'd like to
> know the rationale for that design.

Simply not to introduce special cases I guess.  If you write ``x.a += b``
then `x.a` will be rebound whether an `a.__iadd__()` exists or not. 
Otherwise one would get interesting subtle differences with properties for
example.  If `x.a` is a property that checks if the value satisfies some
constraints ``x.a += b`` would trigger the set method only if there is no
`__iadd__()` involved if there's no rebinding.

Ciao,
	Marc 'BlackJack' Rintsch


From has.temp3 at virgin.net  Mon Oct 15 18:57:04 2007
From: has.temp3 at virgin.net (has)
Date: Mon, 15 Oct 2007 15:57:04 -0700
Subject: py2app help
In-Reply-To: <mailman.39.1192483322.13605.python-list@python.org>
References: <mailman.39.1192483322.13605.python-list@python.org>
Message-ID: <1192489024.055715.69900@e9g2000prf.googlegroups.com>

On 15 Oct, 22:21, Massimo Di Pierro <mdipie... at cti.depaul.edu> wrote:
> Hello,
>
> Two users have reported this error when used the OSX version of Gluon  
> (http://mdp.cti.depaul.edu/examples)
>
> Traceback (most recent call last):
>     File "/Users/jacek/src/gluon/runme.app/Contents/Resources/
> __boot__.py", line 157, in <module>
>       rograms/gluon/runme.py'))
>     File "/Users/jacek/src/gluon/runme.app/Contents/Resources/
> __boot__.py", line 148, in _run
>       target, wasChanged = alias.ResolveAlias(None)
> MacOS.Error: (-35, 'no such volume')
> 2007-10-15 21:29:08.896 runme[8217] runme Error
> 2007-10-15 21:29:08.898 runme[8217] runme Error
> An unexpected error has occurred during execution of the main script
> Error: (-35, 'no such volume')
>
> I made it with py2app and I am relatively new to OSX.
> Does anybody has any idea of what could be wrong?
> I would very much appreciate any help. The code is posted including  
> setup_py2app.

Most of the files in the .app bundle are actually symlinks, so I'm
guessing you built it with the --alias flag which should be used for
development purposes only. You need to rebuild it as a standalone
executable. See the py2app documentation for more info:

http://svn.pythonmac.org/py2app/py2app/trunk/doc/index.html

(You might also file a feature request with the py2app developer
asking for it to give a more helpful error message when this error
occurs.)

HTH

has
--
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org



From bob at passcal.nmt.edu  Tue Oct 23 16:04:14 2007
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Tue, 23 Oct 2007 14:04:14 -0600
Subject: Python on Intel A110?
Message-ID: <2007102314041416807-bob@passcalnmtedu>

Will the "stock" Windows version of Python install on a Samsung Q1U-EL 
UMPC running Vista and with an Intel A110 processor?  I want to do some 
development and just happened to think about this.  I don't know what 
these processors are compatible with at the binary level.

Thanks!

Bob



From python.list at tim.thechases.com  Sun Oct 21 15:55:01 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 21 Oct 2007 14:55:01 -0500
Subject: Splitting URLs
In-Reply-To: <13hmp2330pgrua4@corp.supernews.com>
References: <13hmp2330pgrua4@corp.supernews.com>
Message-ID: <471BAE95.5000604@tim.thechases.com>

> URL = 'http://steve:secret at www.domain.com.au:82/dir" + \
>     'ectory/file.html;params?query#fragment'
> 
> If I split the URL, I would like to get the following components:
> 
> scheme = 'http'
> netloc = 'steve:secret at www.domain.com.au:82'
> username = 'steve'
> password = 'secret'
> hostname = 'www.domain.com.au'
> port = 82
> path = '/directory/file.html'
> parameters = 'params'
> query = 'query'
> fragment = 'fragment'
> 
> I can get *most* of the way with urlparse.urlparse: it will split the URL 
> into a tuple:
> 
> ('http', 'steve:secret at www.domain.com.au:82', '/directory/file.html', 
> 'params', 'query', 'fragment')
> 
> If I'm using Python 2.5, I can split the netloc field further with named 
> attributes. Unfortunately, I can't rely on Python 2.5 (for my sins I have 
> to support 2.4). Before I write code to split the netloc field by hand (a 
> nuisance, but doable) I thought I'd ask if there was a function somewhere 
> in the standard library I had missed.

there are some goodies in urllib for doing some of this
splitting.  Example code at the bottom of my reply (though it
seems to choke on certain protocols such as "mailto:" and "ssh:"
because urlparse doesn't return the netloc properly)

> This second question isn't specifically Python related, but I'm asking it 
> anyway...
> 
> I'd also like to split the domain part of a HTTP netloc into top level 
> domain (.au), second level (.com), etc. I don't need to validate the TLD, 
> I just need to split it. Is splitting on dots sufficient, or will that 
> miss some odd corner case of the HTTP specification?

I believe that dots are the sanctioned separator, HOWEVER, you
can have a non-qualified machine-name with local scope, so you
can easily have NO TLD, such as

  http://user:password at localhost:8000/path/to/thing

There's also the ambiguity of what "TLD" means if you use IP
addresses:

 http://user:password at 192.168.1.1:8000/path/to/thing

Does that make the TLD "1"?  Other odd edge-cases that are
usually allowable (but frowned upon, mostly used by
spammers/phishers) include using a long-int as the domain-name,
such as

  http://user:password at 2130706433:8000/path/to/thing

In an attempt to play with these functions, I present the code below.

-tkc


import urlparse, urllib
tests = (
  'http://steve:secret at www.example.com.au:82/'
    'directory/file.html;params?query#fragment',
  'http://user:password at 192.168.1.2/path/to/thing/',
  'http://192.168.1.2/path/to/thing/',
  'http://2130706433/path/to/thing/',
  'http://localhost/path/to/thing/',
  'http://user:password at localhost/path/to/thing/',
  'telnet://foo at bar.com',
  'ssh://user at example.com',
  'gopher://wais.example.edu',
  'svn+ssh://user:password at svn.example.com/svn/here/there/',
  'mailto:joe at example.com',
  )

def is_ip_address(s):
  for i, part in enumerate(s.split('.')):
    try:
      assert 0 <= int(i) <= 255
    except:
      return False
  return i == 3

def steve_parse(url):
  (scheme, netloc, path,
    params, query, fragment) = urlparse.urlparse(url)
  creds, host = urllib.splituser(netloc)
  username, password = urllib.splitpasswd(creds or '')
  host, port = urllib.splitport(host)
  if '.' in host and not is_ip_address(host):
      domain, tld = host.rsplit('.', 1)
  else:
    domain = host
    tld = ''
  return (
    scheme, username, password,
    domain, tld, port,
    path, params, query,
    fragment)
if __name__ == '__main__':
  for test in tests:
    print test
    (scheme, username, password,
      domain, tld, port,
      path, params, query,
      fragment) = steve_parse(test)
    print '\tScheme: ', scheme
    print '\tUsername: ', username
    print '\tPassword: ', password
    print '\tDomain: ', domain
    print '\tTLD: ', tld
    print '\tPort: ', port
    print '\tPath: ', path
    print '\tParams: ', params
    print '\tQuery: ', query
    print '\tFragment: ', fragment
    print '='*50







From rdm at rcblue.com  Sun Oct  7 02:05:03 2007
From: rdm at rcblue.com (Dick Moores)
Date: Sat, 06 Oct 2007 23:05:03 -0700
Subject: Top Programming Languages of 2013
Message-ID: <20071007060510.5DC811E4006@bag.python.org>

<http://www.redcanary.ca/view/top-programming>

Dick Moores



From akraemer at sbcglobal.net  Tue Oct  9 13:44:01 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Tue, 9 Oct 2007 10:44:01 -0700 (PDT)
Subject: mutable objects as dictionary keys
Message-ID: <496883.54652.qm@web81005.mail.mud.yahoo.com>

Hi everyone,

I know that the subject of mutable objects as dictionary keys has been discussed a number of times in this forum (see for instance "freezing" of classes), but I would love to hear the thoughts of the experts on the approach below. 

The use case that I encounter frequently is the classification of objects according to certain rules or properties: Say, I have objects A, B, C, ... (e.g. instances of a class, dict, etc), I can write

    d = {}
    d.setdefault(A,[]).append(A)
    d.setdefault(B,[]).append(B)
    ...

so objects that map to the same hash key will end up in the same bucket. (A "real world" example I had to deal with recently was for instance the construction of a directed acyclic graph from many directed trees where identical subtrees needed to be identified.)

The easiest way is of course to define custom __hash__() and __eq__() methods, but this breaks if objects are mutated (accidentally) after having been inserted into the dictionary. The "best" working approach I came up with so far is to generate an "immutable view" V of a mutable object O according to my classification rule, delegate O.__hash__ and O.__eq__ to V, and make sure that the V is memoized and cannot (easily) be altered later, even when O is mutated:

def hashable_mutable_factory(mutable,rule):
  class _mutable(mutable):
    def __init__(self,*args,**kw):
      self._view_cache = {}
      super(_mutable,self).__init__(*args,**kw)
    def _view(self):
      id_ = id(self)
      if not self._view_cache.has_key(id_):
        self._view_cache[id_] = rule(self)
      return self._view_cache[id_]
    def __hash__(self):
      return hash(self._view())
    def __eq__(self,other):
      return self._view() == other._view()
  return _mutable

E.g.:

>>> hashable_dict = hashable_mutable_factory(dict,lambda obj: frozenset(obj.iteritems()))
>>> h = hashable_dict(a=1,b=2)
>>> d = {}
>>> d[h] = 'foo'
>>> d
{{'a': 1, 'b': 2}: 'foo'}
>>> h['c'] = 'bar'
>>> d
{{'a': 1, 'c': 'bar', 'b': 2}: 'foo'}
>>> g = hashable_dict(a=1,b=2)
>>> h

{'a': 1, 'c': 'bar', 'b': 2}

>>> g

{'a': 1, 'b': 2}
>>> id(g) == id(h)
False
>>> g == h
True

I slightly favor the factory function idiom above over defining the rule in a super class (this would have to be done for each mutable type and rule function separately), especially since I read that future versions of python (2.6 ?, 3.0 ?) will contain class decorators and allow syntax like class A(*bases): pass

Is there a better approach? Any comments are appreciated. 

I have been seriously using Python for one year know, mostly in the context of graph algorithms etc., and it has always been a delightful coding experience!

Best regards,

Andreas




-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/07030119/attachment.html>

From stef.mientki at gmail.com  Fri Oct  5 14:51:18 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Fri, 05 Oct 2007 20:51:18 +0200
Subject: Howto Launch a windows application ?
In-Reply-To: <66d0a6e10710042124m3364a258r92658376ad735410@mail.gmail.com>
References: <47040C25.7040303@gmail.com>
	<66d0a6e10710042124m3364a258r92658376ad735410@mail.gmail.com>
Message-ID: <470687A6.5010903@gmail.com>

Nicholas Bastin wrote:
> On 10/3/07, stef mientki <stef.mientki at gmail.com> wrote:
>   
>> hello,
>>
>> I'm trying to launch a windows application,
>> but as many others on this list, I've some trouble.
>> I read some other threads about this topic,
>> but sorry, I still don't understand all this (never heard of pipes).
>>
>> When I use a batch file, I can launch the bat-file from python,
>> and the windows application launched from the batchfile is run perfectly.
>>
>> Now when I try to run the same windows application from Popen or call,
>> nothing happens (or at least it's very fast and produces not the
>> expected output).
>>
>> Please enlighten me, preferable in "windows-terminology"  ;-)
>>
>> thanks,
>> Stef Mientki
>>
>> from subprocess import *
>>
>> cmd =[]
>> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
>> cmd.append ( '-long-start' )
>> cmd.append ( '-d')
>> cmd.append ( '-clear' )
>> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
>> cmd.append ( 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
>> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>>
>> # DOESN'T WORK
>> result = call ( cmd )
>>
>> # Both Popen and call work
>> cmd = [ 'd:\\data_actueel\\d7_test_browser\\JALcc.bat' ]
>> #output = Popen ( cmd )
>> result = call ( cmd )
>> print result
>>     
>
> First, call is a convenience function, but in your case, it's probably
> not that convenient.  Use the actual Popen constructor so you can get
> at the output directly.  Also, ditch the output redirector and use a
> pipe:
>
> p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
> (out, err) = p.stdout, p.stderr
> rcode = p.wait()
> print out, err, rcode
>
> Try that and see what happens.  When it doesn't work, look carefully
> in out and err and see if anything interesting is in there.  I was
> able to open notepad.exe in this way with no problems so my guess is
> you're having some other problem, but avoiding the use of the
> convenience function will give you stdout and stderr to look at.
>
>   
Thanks Nick,

replacing
    #print out, err, rcode
with
    for line in out:
          print line
    for line in err:
          print line
points me to the problem issue, which is the "-s" option,
although I don't understand it yet

> --
> Nick
>
>   



From hniksic at xemacs.org  Wed Oct 10 10:29:47 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 10 Oct 2007 16:29:47 +0200
Subject: Singleton
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
Message-ID: <87d4vngi04.fsf@mulj.homelinux.net>

pythoncurious at gmail.com writes:

> Now when I run the 'run.py', it will print two different numbers.
> sys.modules tells me that 'mod1' is imported as both 'one.mod1' and
> 'mod1', which explains the result.

If I were you, I'd make sure that the module duplicate problem is
resolved first, for example by putting run.py somewhere outside one/.
Then the singleton problem disappears as well.

> It is possible to solve this by always importing with the complete
> path like 'one.mod1', even when inside the 'one' directory, but
> that's an error waiting to happen.

Is it, really?  As far as I can tell, Python handles that case rather
robustly.  For example:

$ mkdir one
$ touch one/__init__.py
$ touch one/mod1.py one/mod2.py
$ echo 'import mod2' > one/mod1.py
$ python
Python 2.5.1 (r251:54863, May  2 2007, 16:56:35)
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import one.mod1
>>> import sys
>>> sorted(sys.modules)
['UserDict', '__builtin__', '__main__', '_codecs', '_sre', '_types', 'codecs', 'copy_reg', 'encodings', 'encodings.aliases', 'encodings.codecs', 'encodings.encodings', 'encodings.types', 'encodings.utf_8', 'exceptions', 'linecache', 'one', 'one.mod1', 'one.mod2', 'os', 'os.path', 'posix', 'posixpath', 're', 'readline', 'rlcompleter', 'signal', 'site', 'sre_compile', 'sre_constants', 'sre_parse', 'stat', 'sys', 'types', 'warnings', 'zipimport']

Although mod1 imports mod2 simply with "import mod2", the fact that
mod1 itself is imported as part of "one" is respected.  As a result,
mod2 is imported as "one.mod2", exactly as if it were imported from
outside the "one" package.

run.py is an exception because it is started directly using "python
run.py", so it never gets the information that it's supposed to be
part of a package.  To fix the problem, all you need to do is make
sure that executable scripts such as run.py are either placed safely
outside the package, or that they take care to always use absolute
imports, such as "import one.mod1" instead of "import mod1".  Placing
them outside the package is a good example of preventing an error
waiting to happen, like the one you hinted at.


From see.signature at no.spam  Mon Oct  8 04:08:34 2007
From: see.signature at no.spam (Eric Brunel)
Date: Mon, 08 Oct 2007 10:08:34 +0200
Subject: tkinter question
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
	<op.tzpugxp2wepdt4@ericb.pragmadev>
	<470629D1.2040404@codebykevin.com>
	<op.tzp40yrqwepdt4@ericb.pragmadev>
	<47063964.7000809@codebykevin.com>
	<mailman.1607.1191657100.2658.python-list@python.org>
	<470904AC.9090100@codebykevin.com>
Message-ID: <op.tzvcwkbywepdt4@ericb.pragmadev>

On Sun, 07 Oct 2007 18:09:16 +0200, Kevin Walzer <kw at codebykevin.com>  
wrote:
> Hendrik van Rooyen wrote:
>> "Kevin Walzer" <kw at codebykevin.com> wrote:
>>
>>> I find "pack" to be more flexible than "grid," so I prefer it for  
>>> complex layouts. "grid" is better for simple layouts.
>>  *does a double take*  are you serious? - my experience is that
>> pack is only good for simple single row or single column stuff.

I agree with Hendrik, here...

> Well, I guess it depends on your viewpoint. I find "pack" flexible  
> because it allows me to think in terms of top, bottom, right, and left  
> in terms of arranging UI elements--it's an elegant way to do it in my  
> view. I tend to use "grid" if I have, say, a window with several  
> preference items: a label, an entry field, and a button, all arranged in  
> rows. "grid" is better for stuff like that, I agree.
>
> See http://www.codebykevin.com/blosxom/business/phynchronicity-new.png:  
> this is an application I develop. The layout is all handled by "pack"  
> and paned windows. Where you you use "grid" in a layout like this?

I personally use grid almost everywhere, except for basic rows or columns  
of widgets with no resizing policy. I find pack confusing, for the very  
same reason you find it flexible apparently; for me, this  
top/bottom/left/right stuff is not clear at all, and even after all the  
explanations I read (including yours), I still don't get the resize policy  
with pack. The single 'sticky' option with the row & column weights with  
grid is just clearer for me. And there are layouts that you just can't do  
with pack (canvas or text with vertical and horizontal scrollbars, for  
example...).

But apparently, even this is - again - a matter of taste. So I guess I'll  
have to stop telling everyone that grid is better... ;-)
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From xah at xahlee.org  Mon Oct 22 08:50:30 2007
From: xah at xahlee.org (Xah Lee)
Date: Mon, 22 Oct 2007 05:50:30 -0700
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <1193037849.011136.282480@y27g2000pre.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
Message-ID: <1193057430.359962.68820@v29g2000prd.googlegroups.com>

TeX, in my opinion, has done massive damage to the computing world.

i have written on this variously in emails. No coherent argument, but
the basic thoughts are here:
http://xahlee.org/cmaci/notation/TeX_pestilence.html

it's slightly repeatitous there. But i think i might summarize in gist
the few fundanmental issues, all sterm from just the first one:

1. A typesetting system per se, not a mathematical expressions
representation system.

2. The free nature, like cigeratte given to children, contaminated the
entire field of math knowledge representation into 2 decades of
stagnation.

3. Being a typesetting system, brainwashed entire generation of
mathematicians into micro-spacing doodling.

4. Inargurated a massive collection of documents that are invalid
HTML. (due to the programing moron's ingorance and need to idolize a
leader, and TeX's inherent problem of being a typesetting system that
is unsuitable of representing any structure or semantics)

5. This is arguable and trivial, but i think TeX judged as a computer
language in particular its syntax, on esthetical grounds, sucks in
major ways.

Btw, a example of item 4 above, is Python's documentation. Fucking
asses and holes.

  Xah
  xah at xahlee.org
  http://xahlee.org/



From tjreedy at udel.edu  Thu Oct 11 15:14:14 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 11 Oct 2007 15:14:14 -0400
Subject: Python SVN down?
References: <1192094652.913626.171650@v3g2000hsg.googlegroups.com>
Message-ID: <felsm6$bg9$1@sea.gmane.org>


"Anthon" <Anthon.van.der.Neut at googlemail.com> wrote in message 
news:1192094652.913626.171650 at v3g2000hsg.googlegroups.com...
|I am trying to get at the python source code, but it seems
| svn.python.org is down, at least on port 80 (http) and 3690 (svn).
| This happened earlier this week and then it came back (at least
| yesterday).
| Are all the real  ( ;-) ) developers using ssh+svn and not noticing
| this?

The down, up, and down again were all noted on pydev.





From __peter__ at web.de  Mon Oct 22 04:24:15 2007
From: __peter__ at web.de (Peter Otten)
Date: Mon, 22 Oct 2007 10:24:15 +0200
Subject: package import question
References: <1193040634.402343.127660@y27g2000pre.googlegroups.com>
Message-ID: <ffhmnf$ke4$00$1@news.t-online.com>

Phoe6 wrote:

> Hi all,
> I have the following directory structure:
> 
> wallpaper/
>               -main.py
>               -ng/
>                  -- __init__.py
>                  -- setdesktop.py
>               -yb/
>                  -- __init__.py
>                  -- setdesktop.py
> 
>>From main.py, I would like to do:
> import ng
> import yb
> ng.setdesktop.run()
> yb.setdesktop.run()
> 
> But it is not working! when I import the package, the modules present
> inside the package are getting imported.
> 
> However, following the python document if I do
> import ng.setdesktop
> import yb.setdesktop
> 
> ng.setdesktop.run()
> yb.setdesktop.run()
> Works fine.
> 
> I would like to use the notation.
> import <my_package_name>
> and use the modules inside the package in the dotted module notation.
> What should I do the enable such a kind of imports.

Put the line

from . import setdesktop

into both __init__.py files. Importing the package will then trigger the
submodule to be imported.

Peter


From gagsl-py2 at yahoo.com.ar  Sat Oct 20 18:34:26 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 20 Oct 2007 19:34:26 -0300
Subject: traceback over C API - still not working...
References: <pan.2007.10.20.17.47.50.320939@hotmail.com>
Message-ID: <op.t0iozotex6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sat, 20 Oct 2007 14:47:52 -0300, Sami Vaisanen <ensiferum_ at hotmail.com>  
escribi?:

> This is becoming utterly painful process.... I found out that the return
> value from "format_exception" function is NOT a list, i.e. PyList_Check()
> fails. PySequence_Check() succeeds but then PySequence_List() gives me
> back -1. So wtf?

It seems very unlikely, since the traceback module is written in Python.  
It clearly returns a list.

>         py_ref fun(PyObject_GetAttrString(module.get(),  
> "format_exception"));
>         if (fun)
>             list = PyObject_CallFunctionObjArgs(type, value, trace,  
> NULL);

Of course, you get a list if you actually call the function...

-- 
Gabriel Genellina



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 23:07:34 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 03:07:34 -0000
Subject: if instance exists problem ..
References: <mailman.142.1192660790.13605.python-list@python.org>
	<1192662735.463554.165450@e9g2000prf.googlegroups.com>
	<13hdj38n7n3bv55@corp.supernews.com>
Message-ID: <13hdjfmii2jc964@corp.supernews.com>

On Thu, 18 Oct 2007 03:00:56 +0000, Steven D'Aprano wrote:

> On Wed, 17 Oct 2007 23:12:15 +0000, Paul Hankin wrote:
> 
>> 'if x' doesn't test if x exists, it tests if x when cast to a bool is
>> True.
> 
> To be pedantic:
> 
> Python doesn't have type casts. bool(x) doesn't cast x as a bool, it
> creates a brand new Boolean object from x.

Actually, to be even more pedantic, True and False are both singletons, 
and so bool() doesn't actually create a new Boolean object but reuses the 
existing ones.


-- 
Steven.


From eu_my123 at hotmail.com  Fri Oct 12 12:28:03 2007
From: eu_my123 at hotmail.com (TidyTrax@2)
Date: Fri, 12 Oct 2007 09:28:03 -0700
Subject: Melhor Site de Downloads [ BIG SITE AND LINKS FASTED]
Message-ID: <1192206483.312719.138660@z24g2000prh.googlegroups.com>

www.forumgratiz.com.br
www.forumgratiz.com.br
www.forumgratiz.com.br
Download de :
Filmes
Games
XXX
Programas
Isso e muito ++ totalmente gratis


http://www.forumgratiz.com.br/forumb/index.php?act=reg
http://www.forumgratiz.com.br/forumb/index.php?act=reg
http://www.forumgratiz.com.br/forumb/index.php?act=reg
Somente Registrados Podem Ver os T?picos

Por Favor Votem Tamb?m http://www.topinho.com/index.php?a=in&u=jeanmartins
http://www.topinho.com/index.php?a=in&u=jeanmartins
http://www.topinho.com/index.php?a=in&u=jeanmartins
Pois o Site Sobrevive disso.
..



From erik at myemma.com  Fri Oct 26 00:04:49 2007
From: erik at myemma.com (Erik Jones)
Date: Thu, 25 Oct 2007 23:04:49 -0500
Subject: OT Re: Parallel insert to postgresql with thread
In-Reply-To: <13i2l4k42hvaccd@corp.supernews.com>
References: <1193310044.750654.157320@22g2000hsm.googlegroups.com>	<5obctcFm7sogU1@mid.uni-berlin.de>	<13i12q276igp0df@corp.supernews.com>
	<mailman.450.1193323639.13605.python-list@python.org>
	<13i2l4k42hvaccd@corp.supernews.com>
Message-ID: <AF3A2876-0BCB-413C-BA18-B5251BD63696@myemma.com>

If you're not Scott Daniels, beware that this conversation has gone  
horribly off topic and, unless you have an interest in PostreSQL, you  
may not want to bother reading on...

On Oct 25, 2007, at 9:46 PM, Scott David Daniels wrote:

> Erik Jones wrote:
>>
>> On Oct 25, 2007, at 7:28 AM, Scott David Daniels wrote:
>>> Diez B. Roggisch wrote:
>>>> Abandoned wrote:
>>>>> Hi..
>>>>> I use the threading module for the fast operation. But ....
>>> [in each thread]
>>>>> def save(a,b,c):
>>>>>             cursor.execute("INSERT INTO ...
>>>>>             conn.commit()
>>>>>             cursor.execute(...)
>>>>> How can i insert data to postgresql the same moment ?...
>>>>
>>>> DB modules aren't necessarily thread-safe. Most of the times, a
>>>> connection (and ... cursor) can't be shared between threads.
>>>> So open a connection for each thread.
>>>
>>> Note that your DB server will have to "serialize" your inserts, so
>>> ... a single thread through a single connection to the DB is the way
>>> to go.  Of course it (the DB server) may be clever enough to behave
>>> "as if" they are serialized, but most of your work parallelizing at
>>> your end simply creates new work at the DB server end.
>>
>> Fortunately, in his case, that's not necessarily true....  If he
>> goes the recommended route with a separate connection for each  
>> thread,
>> then Postgres will not serialize multiple inserts coming from  
>> separate
>> connections unless there is something like and ALTER TABLE or REINDEX
>> concurrently happening on the table.
>> The whole serialized inserts thing is strictly something popularized
>> by MySQL and is by no means necessary or standard (as with a lot of
>> MySQL).
>
> But he commits after every insert, which _does_ force serialization  
> (if
> only to provide safe transaction boundaries).  I understand you can  
> get
> clever at how to do it, _but_ preserving ACID properties is exactly  
> what
> I mean by "serialize,"

First, bad idea to work with your own definition of a very domain  
specific and standardized term.  Especially when Postgres's Multi- 
Version Concurrency Control mechanisms are designed specifically for  
the purpose of preserve ACID compliance without forcing serialized  
transactions on the user.

Second, unless he specifically sets his transaction level to  
serializable, he will be working in read-committed mode.  What this  
specifically means is that two (or more) transactions writing to the  
same table will not block any of the others.  Let's say the user has  
two concurrent inserts to run on the same table that, for whatever  
reason, take a while to run (for example, they insert the results of  
some horribly complex or inefficient select), if either is run in  
serializable mode then which ever one starts a fraction of a second  
sooner will run until completion before the second is even allowed to  
begin. In (the default) read-committed mode they will both begin  
executing as soon as they are called and will write their data  
regardless of conflicts.  At commit time (which may be sometime later  
for transactions with multiple statements are used) is when conflicts  
are resolved.  So, if between the two example transactions there does  
turn out to be a conflict betwen their results, whichever commits  
second will roll back and, since the data written by the second  
transaction will not be marked as committed, it will never be visible  
to any other transactions and the space will remain available for  
future transactions.

Here's the relevant portion of the Postgres docs on all of this:  
http://www.postgresql.org/docs/8.2/interactive/mvcc.html

> and while I like to bash MySQL as well as the
> next person, I most certainly am not under the evil sway of the vile
> MySQL cabal.

Good to hear ;)

>
> The server will have to be able to abort each transaction
> _independently_ of the others, and so must serialize any index
> updates that share a page by, for example, landing in the same node
> of a B-Tree.

There is nothing inherent in B-Trees that prevents identical datum  
from being written in them.  If there was the only they'd be good for  
would be unique indexes.  Even if you do use a unique index, as noted  
above, constraints and conflicts are only enforced at commit time.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From google at mrabarnett.plus.com  Sat Oct 13 14:42:41 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Sat, 13 Oct 2007 11:42:41 -0700
Subject: raw_input() and utf-8 formatted chars
In-Reply-To: <1192241386.568665.140500@y27g2000pre.googlegroups.com>
References: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
	<1192216685.923198.279040@v29g2000prd.googlegroups.com>
	<1192220315.602812.155810@z24g2000prh.googlegroups.com>
	<5na4jvFh28v6U2@mid.uni-berlin.de>
	<1192241386.568665.140500@y27g2000pre.googlegroups.com>
Message-ID: <1192300961.736407.292260@q3g2000prf.googlegroups.com>

On Oct 13, 3:09 am, 7stud <bbxx789_0... at yahoo.com> wrote:
> On Oct 12, 2:43 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
> > You mean literally!?  Then of course I get A\xcc\x88 because that's what I
> > entered.  In string literals in source code the backslash has a special
> > meaning but `raw_input()` does not "interpret" the input in any way.
>
> Then why don't I end up with the same situation as this:
>
> > >> > s = 'A\xcc\x88'   #capital A with umlaut
> > >> > print s           #displays capital A with umlaut
> > > And what is it that your keyboard enters to produce an 'a' with an umlaut?
>
> > *I* just hit the ? key.  The one right next to the ? key.  ;-)
>
> ...and what if you don't have an a-with-umlaut key?

raw_input() returns the string exactly as you entered it. You can
decode that into the actual UTF-8 string with decode("string_escape"):

s = raw_input('Enter: ')   #A\xcc\x88
s = s.decode("string_escape")

It looks like your system already understands UTF-8 and will decode
the UTF-8 string you print to the Unicode character.



From bozonm at vscht.cz  Wed Oct 10 06:32:25 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Wed, 10 Oct 2007 12:32:25 +0200
Subject: struct.unpack less than 1 byte
References: <1192010223.490715.205380@57g2000hsv.googlegroups.com>
Message-ID: <pan.2007.10.10.10.32.23.855745@vscht.cz>

You are able to read single bits from file in C ?

You'll have to read the bytes and than perform some bitwise operations on
them to extract the bits

> hello all,
> 
> i need to read from a file a struct like this [1byte, 12bits, 12bits]
> reading 1 byte or more is not a problem ... but the 12 bits values
> are ...
> 
> thanks



From lasses_weil at klapptsowieso.net  Wed Oct  3 16:27:53 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Wed, 03 Oct 2007 22:27:53 +0200
Subject: List of objects X Database
In-Reply-To: <mailman.1480.1191442943.2658.python-list@python.org>
References: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
	<mailman.1480.1191442943.2658.python-list@python.org>
Message-ID: <4703fb49$0$30375$9b4e6d93@newsspool4.arcor-online.net>

Michael Bentley wrote:
> 
> On Oct 3, 2007, at 1:01 PM, MindMaster32 wrote:
> 
>> I am writing a script that has to read data from an ASCII file of
>> about 50 Mb and do a lot of searches and calculations with that data.
>> That would be a classic problem solved by the use of a database
>> (SQLite would suit just fine), but that would require the user to
>> install more packages other than python itself, and that I am trying
>> to avoid.
No it would not:
<URL:http://docs.python.org/lib/module-sqlite3.html>
(Well, its new in Python 2.5, but you didn't say you were restricted to 
some older version.)

/W


From bh at izb.knu.ac.kr  Sat Oct 20 09:37:05 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Sat, 20 Oct 2007 22:37:05 +0900
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
In-Reply-To: <4719F4FB.7020508@holdenweb.com>
References: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
	<1192779973.14981.36.camel@viola.izb.knu.ac.kr>
	<4719F4FB.7020508@holdenweb.com>
Message-ID: <1192887425.21842.3.camel@viola.izb.knu.ac.kr>

Steve,

On Sat, 2007-10-20 at 08:30 -0400, Steve Holden wrote:
> Byung-Hee HWANG wrote:
> [... whole article quoted ...]
> > +1 ;;
> > BTW, what is G2/1.0? Is that Emacs-like editor?
> > 
> I can't tell you that, but I do know that someone who quotes a whole 
> lengthy article like that just to ask a simple question isn't being very 
> considerate of their readers.

You're the only guy who has read the my comment. Thanks!

-- 
Byung-Hee HWANG * ???????
InZealBomb, Kyungpook National University, KOREA

"What I care about is that you obviously don't love me."
		-- Kay Adams, "Chapter 25", page 359


From danb_83 at yahoo.com  Wed Oct 24 22:10:25 2007
From: danb_83 at yahoo.com (Dan Bishop)
Date: Wed, 24 Oct 2007 19:10:25 -0700
Subject: delineating by comma where commas inside quotation marks don't
	count
In-Reply-To: <qJSTi.14839$na2.5524@trndny08>
References: <qJSTi.14839$na2.5524@trndny08>
Message-ID: <1193278225.923337.217160@k35g2000prh.googlegroups.com>

On Oct 24, 8:56 pm, "Junior" <mlon... at verizon.net> wrote:
> I want to open a text file for reading and delineate it by comma.  I also
> want any data
> surrounded by quotation marks that has a comma in it, not to count the
> commas inside the
> quotation marks

Use the csv module.



From deets at nospam.web.de  Mon Oct 22 14:44:21 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 20:44:21 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193076352.576143.123260@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
Message-ID: <5o49cjFkqf0tU1@mid.uni-berlin.de>

> You wrote: " can't think of a single reason why you would ever want to
> do this,
> since your "list of method and property names" would be just as
> verbose as just typing the actual python code."
> 
> I don't think I understand how this would be the same amount of
> typing. Consider the following example that would generate a Monster
> class file from an input text file (I only did one property and method
> in generated class file.):
> 
> Contents of input text file:
> 
> [Name]
> Fire Breathing Dragon
> 
> [Properties]
> Strength
> Scariness
> Endurance
> 
> [Methods]
> eatMaiden argMaiden
> fightKnight argKnight

Others have already given you reasons why that is a bad idea. Another 
one is this: how do you deal with changes to your generated classfile? 
It's complicated to ensure that you don't override modified code with 
generated.

Diez


From zachREMOVE at MEin.tu-clausthal.de  Mon Oct  1 05:39:23 2007
From: zachREMOVE at MEin.tu-clausthal.de (Gabriel Zachmann)
Date: Mon, 01 Oct 2007 11:39:23 +0200
Subject: Bug with lists of pairs of lists and append()
In-Reply-To: <1191020974.172493.127040@w3g2000hsg.googlegroups.com>
References: <slrnffqvr6.uut.zach@zaphome.in.tu-clausthal.de>
	<1191020974.172493.127040@w3g2000hsg.googlegroups.com>
Message-ID: <fdqf83$jbd$4@ariadne.rz.tu-clausthal.de>


>     x = (list(l), list(r))

BTW: I prefer this syntax, because it makes the copy explicit, while 
l[:] seems to me more "implicit" ...

Best regards,
Gabriel.

-- 
______________________________________________________________
Life is so constructed that the event does not, cannot,
will not match the expectation.             (Charlotte Bronte)
______________________________________________________________
  zach in.tu-clausthal.de      __@/'    www.gabrielzachmann.org
______________________________________________________________


From besturk at gmail.com  Sat Oct 27 04:14:14 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 27 Oct 2007 01:14:14 -0700
Subject: How can i do proxy in urllib.urlopen?
Message-ID: <1193472854.889001.38550@o3g2000hsb.googlegroups.com>

Hi i want to do proxy in urllib.urlopen how can i do this ?
And which proxy type have i can prefer ?



From deets at nospam.web.de  Tue Oct 16 15:57:48 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 16 Oct 2007 21:57:48 +0200
Subject: best way of dealing with currency?
In-Reply-To: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>
References: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>
Message-ID: <5nkje5Fi5e9cU1@mid.uni-berlin.de>

Paul Miller schrieb:
> I'm looking at doing some currency calculations in some Python code 
> integrated with a C++ application. I want to be able to come up with the 
> same values I get in an Excel spreadsheet.
> 
> I've been poking around for a couple of days and haven't come across a 
> definitive method for dealing with currency in a precise manner.
> 
> What do I need to do? Use rationals? Very high-precision floating-point? 
>  mxNumber? Or something else?

The module decimal. But in the end, you might not be able to recreate 
the same values as excel, due to the unknown intricacies of excel.

Diez


From paddy3118 at googlemail.com  Wed Oct 17 02:29:30 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Wed, 17 Oct 2007 06:29:30 -0000
Subject: best way of dealing with currency?
In-Reply-To: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>
References: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>
Message-ID: <1192602570.266090.309550@z24g2000prh.googlegroups.com>

On Oct 16, 8:29 pm, Paul Miller <p... at fxtech.com> wrote:
> I'm looking at doing some currency calculations in some Python code
> integrated with a C++ application. I want to be able to come up with the
> same values I get in an Excel spreadsheet.

Ouch! do really want to come up with the Excel result? Sometimes
people have made expensive mistakes when doing financial calculations
in Excel. Part of the problem is Excels calculation errors, and part
is due to spreadsheets being inherently hard to review, and easy to
silently change.

I'd suggest you use Pythons decimal arithmetic module for precise
calculations (i.e. to a precision that you specify), and don't blindly
assume the source of any discrepancies but investigate them
impartially.

(Here's a link to some alarming statistics from a HM customs oficial:
http://www.financeweek.co.uk/cgi-bin/item.cgi?id=5120&d=302&h=24&f=254
).

> I've been poking around for a couple of days and haven't come across a
> definitive method for dealing with currency in a precise manner.
>
> What do I need to do? Use rationals? Very high-precision floating-point?
>   mxNumber? Or something else?
>
> Thanks for any and all input!




From robert.kern at gmail.com  Tue Oct  2 19:26:59 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 02 Oct 2007 18:26:59 -0500
Subject: Using fractions instead of floats
In-Reply-To: <1191360444.514028.186770@d55g2000hsg.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>	<1191206183.441075.167450@57g2000hsv.googlegroups.com>	<mailman.1324.1191208415.2658.python-list@python.org>	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>	<1191286998.727959.8010@50g2000hsm.googlegroups.com>	<1191287823.018676.35640@o80g2000hse.googlegroups.com>	<1191301175.225114.283340@50g2000hsm.googlegroups.com>	<mailman.1380.1191305602.2658.python-list@python.org>
	<1191360444.514028.186770@d55g2000hsg.googlegroups.com>
Message-ID: <fduk44$tk6$1@sea.gmane.org>

mensanator at aol.com wrote:
> On Oct 2, 1:12 am, Robert Kern <robert.k... at gmail.com> wrote:
>> mensana... at aol.com wrote:

>>> How does gmpy make the conversion from float to rational?
>> gmpy has a configurable transformation between floats and the internal
>> representation. I believe the default goes through str().
> 
> How do you do that? Is it configurable at run time or something that
> has to be done when compiled?

Run-time. Use gmpy.set_fcoform(). There is documentation:

  http://gmpy.googlecode.com/svn/trunk/doc/gmpydoc.txt

However, it appears I was wrong about the default. The default will simply
extract the C double and call mpf_set_d() on it to convert it to the appropriate
internal mpf format. This faithfully gives:

In [26]: gmpy.mpf(0.6)
Out[26]: mpf('5.9999999999999998e-1')

The real conversion to mpq rational numbers takes place in using gmpy.f2q():

In [28]: gmpy.f2q?
Type:           builtin_function_or_method
Base Class:     <type 'builtin_function_or_method'>
Namespace:      Interactive
Docstring:
    f2q(x[,err]): returns the 'best' mpq approximating x to
    within relative error err (default, x's precision); 'best'
    rationals as per Stern-Brocot tree; mpz if denom is 1.
    If err<0, error sought is 2.0 ** err.

In [44]: d = gmpy.mpf(0.6)

In [45]: d
Out[45]: mpf('5.9999999999999998e-1')

In [46]: d.getrprec()
Out[46]: 53

In [47]: gmpy.f2q(d)
Out[47]: mpq(3,5)

In [48]: gmpy.f2q(d, -53)
Out[48]: mpq(3,5)

In [49]: gmpy.f2q(d, -54)
Out[49]: mpq(3,5)

In [50]: gmpy.f2q(d, -55)
Out[50]: mpq(6002194384070353L,10003657306783922L)


The procedure followed here finds mpq(3,5) because evaluating "3.0/5.0" in as
binary floating point numbers in double precision gives you the same thing as
evaluating "0.6". So mpq(3,5) is the most parsimonious rational number
*approximating* Python's float("0.6") to within the default double-precision of
binary floating point arithmetic. However, float("0.6") is a rational number
that has the precise value of mpq(6002194384070353L,10003657306783922L).

> But it is still wrong to say "0.6 is definitely not the same as 3/5".

In the context in which it was said, I don't think it's wrong though it is
incomplete and confusing if taken out of that context.

> One can say 0.6 doesn't have an exact float representation and that
> inexact representation is not the same as 3/5. And I suppose one can
> be surprised that when this inexact representation is coerced to a
> rational the result is now exact.
> 
> Would that be a fairer way of putting it?

Yes.

-- 
Robert Kern

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



From root at dev.nul.invalid  Tue Oct 23 00:45:48 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 06:45:48 +0200 (CEST)
Subject: Python - why don't this script work?
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
	<mailman.354.1193108531.13605.python-list@python.org>
Message-ID: <Xns99D27C14698CMyBigKitty@194.177.96.26>

John McMonagle <jmcmonagle at velseis.com.au> wrote in 
news:mailman.354.1193108531.13605.python-list at python.org:

> Your linux shell thinks it is running a shell script (from is not a
> valid command in bash).
> 
> To execute this script with the python interpreter type (from a shell
> prompt):
> 
> python image-harvester.py http://some.url.whatever/images_page
> 
> Read the comments at the beginning of the script and you will discover
> all sorts of important usage information.
> 
> Regards,
> 
> John

Thanks John.

-- 
~Ohmster | ohmster /a/t/ ohmster dot com
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 10 13:27:35 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 10 Oct 2007 19:27:35 +0200
Subject: function wrappers
In-Reply-To: <13gpi4454aajm59@corp.supernews.com>
References: <mailman.20.1192013978.927.python-list@python.org>
	<13gpi4454aajm59@corp.supernews.com>
Message-ID: <470d0b4f$0$32757$426a74cc@news.free.fr>

Scott David Daniels a ?crit :
> Ramon Crehuet wrote:
>> def require_int(func):
>>       def wrapper(arg):
>>           assert isinstance(arg, int)
>>           return func(arg)
>>       return wrapper
>> def p1(a):
>>   print a
>> p2 = require_int(p1)
>>
>> My question is: why do p2 arguments become wrapper arguments? What is 
>> the flux of the arguments in the program when you pass functions as 
>> arguments?

> I suspect you don't understand that each time require_int is called
> a _new_ function named wrapper is created 

which remembers the 'environnement' in which it was defined - this is 
known as a 'closure'.

> (and then returned).

And when this wrapper function is called (instead of the original), it 
receives the arg, test it, and if approriate delegate call to the 
original (wrapped) function.

Another way (perhaps easier to understand if you don't have any 
experience with higher order functions and other functional programming 
idioms) to get the same result would be:

class require_int(object):
   def __init__(self, func):
     self._func = func
   def __call__(self, arg):
     assert isinstance(arg, int)
     return self._func(arg)


From kw at codebykevin.com  Tue Oct  2 09:22:13 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Tue, 02 Oct 2007 09:22:13 -0400
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <47024605.9090407@codebykevin.com>

bramble wrote:

> 
> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?
> 

Wouldn't license compatability be an issue? Tk's license is BSD-style, 
which means it plays nice with both proprietary and open-source software 
(as does Python's license). Aren't PyGtk and wxPython LGPL? And PyQt is 
either GPL or proprietary.

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From MrJean1 at gmail.com  Sat Oct 27 21:17:23 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Sun, 28 Oct 2007 01:17:23 -0000
Subject: good example of C extension for Mac OS X
In-Reply-To: <1193513492.210213.226900@y42g2000hsy.googlegroups.com>
References: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
	<1193511567.031547.245260@e34g2000pro.googlegroups.com>
	<1193513492.210213.226900@y42g2000hsy.googlegroups.com>
Message-ID: <1193534243.638804.218720@q3g2000prf.googlegroups.com>

You will need to download the MacOS X version from

  <http://www.python.org/download/releases/2.5.1/>.

It contains the source code.

/Jean Brouwers


On Oct 27, 12:31 pm, chewie54 <dfabrizi... at gmail.com> wrote:
> On Oct 27, 2:59 pm, MrJean1 <MrJe... at gmail.com> wrote:
>
> > There is a C template in file Modules/xxmodule.c in Python 2.5, maybe
> > earlier.
>
> > /Jean Brouwers
>
> > On Oct 27, 8:11 am, chewie54 <dfabrizi... at gmail.com> wrote:
>
> > > Hi All,
>
> > > Does anyone now of a good example to use as template for a  C program
> > > extension that needs to be built on the Mac OS X.
>
> > > Thanks,
>
> I have looked at the docs on the python.org but specifically looking
> for
> examples showing how to deal with linked lists and more about when to
> use
> references Py_INCREF and Py_DECREF
>
> I didn't find Modules/xxmodule.c on my Mac OS X installation.
>
> Thanks again




From aezell at gmail.com  Tue Oct  9 14:13:16 2007
From: aezell at gmail.com (Alex Ezell)
Date: Tue, 9 Oct 2007 13:13:16 -0500
Subject: SOAPpy and ArrayOfKeyValue
Message-ID: <71dd7f400710091113xdc322d2y8e4e0a4b5788892e@mail.gmail.com>

Can anyone offer any assistance as to how to convert a basic python
dictionary, list, or even tuple into the SOAP type "ArrayOfKeyValue"?

I am currently using SOAPpy, but would be willing to change to ZSI or
something else if it made this conversion easier.

I have tried with the arrayType and structType methods in
SOAPpy.Types, yet they don't seem to do what I need. I suspect there
might not be just a single method call, so, I wrote something like
this:

def dictToKeyValue(self, mydict):
        soap_list = []
        for key,value in mydict.items():
            inner = []
            inner.append(SOAPpy.stringType(key,'key'))
            inner.append(SOAPpy.stringType(value,'value'))
            soap_list.append(SOAPpy.arrayType(inner))
        print soap_list
        return SOAPpy.arrayType(soap_list)

As you can see, it's pretty nasty and doesn't do what I need either. I
have a client that was written in PHP which I am converting. It uses
this function (which calls the PEAR SOAP library):

function assocArrayToKeyValue($array) {
        $soap_array = array();
        foreach($array as $key=>$value) {
            $inner = array();
            $inner[] =& new SOAP_Value('key', 'string', $key);
            $inner[] =& new SOAP_Value('value', 'string', $value);
            $soap_array[] =& new SOAP_Value("item",
"{{$this->wsdl_urn}}KeyValue", $inner);
        }
        return $soap_array;
    }

Unfortunately, I don't really have a way to see exactly what
$soap_array is so that I could emulate it in my Python code.

Any pointers or suggestions are very much appreciated.

/alex


From pyth0nc0d3r at gmail.com  Fri Oct  5 13:16:50 2007
From: pyth0nc0d3r at gmail.com (Lamonte Harris)
Date: Fri, 5 Oct 2007 11:16:50 -0600
Subject: TwistedMatrix missing OpenSSL?
In-Reply-To: <eb79828c0710041256g254a7b23m4cf3eed0f2b6b6b1@mail.gmail.com>
References: <eb79828c0710041256g254a7b23m4cf3eed0f2b6b6b1@mail.gmail.com>
Message-ID: <eb79828c0710051016m5f1ec3eck22a27a69f15b068c@mail.gmail.com>

Where can I get it?  Anyone got any idea?

On 10/4/07, Lamonte Harris <pyth0nc0d3r at gmail.com> wrote:
>
> Where do I get it?  I'm currently running python 2.5
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071005/c0d24e49/attachment.html>

From dteslenko at gmail.com  Wed Oct 24 07:04:00 2007
From: dteslenko at gmail.com (Dmitry Teslenko)
Date: Wed, 24 Oct 2007 15:04:00 +0400
Subject: python 2.5 scripting in vim on windows: subprocess problem
In-Reply-To: <20071022192638.GA30023@trite.hell>
References: <91325fec0710220147i216df961u5f33d5c659cdb92f@mail.gmail.com>
	<91325fec0710220255h210f7271gd2490226e858fc75@mail.gmail.com>
	<471CBD17.8040601@gmx.de>
	<91325fec0710221148i57a700b7ufec2c05f7c9c957@mail.gmail.com>
	<20071022192638.GA30023@trite.hell>
Message-ID: <91325fec0710240404g1eb52dc4yab2459bcfd310c69@mail.gmail.com>

On 22/10/2007, Andy Kittner <andkit at gmx.de> wrote:
> >> Are you running this on vim or gvim? If you are running on gvim, my
> >> guess is that the handles that you are passing are not valid. In
> >> either case, try creating explicit handles that are valid (such as for
> >> /dev/null) and create the process with these handles.
> Just as a side note: my vim was a gvim-7.1.140 with dynamic python
> support, so it doesn't look like a general problem.
I've also tried *-1-140 from cream's sourceforge website and it works
just like my custom-built one.

> > I'm passing hadles that I get from subprocess.Popen. Just passing
> > command to Popen constructor and using his handles to read data. No
> > other handle-manipulations.
> When exactly does it throw the exception? Directly on creation of the
> Popen object, or when you try to read stdout?
It throws exception on subprocess.Popen object instantiation.
os.system() works fine but I want Popen functionality.


From hniksic at xemacs.org  Wed Oct 31 18:12:20 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 31 Oct 2007 23:12:20 +0100
Subject: 3 number and dot..
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<mailman.708.1193861946.13605.python-list@python.org>
	<1193862276.144648.43850@22g2000hsm.googlegroups.com>
	<mailman.712.1193866893.13605.python-list@python.org>
Message-ID: <87mytzhr23.fsf@mulj.homelinux.net>

Paul McNett <p at ulmcnett.com> writes:

> Chris Mellon has given you the best response: use the locale module
> for this.

It may be the best choice as far as reuse is concerned, but it's not
without serious drawbacks.

For one, the locale model doesn't really allow forcing of the
separators.  Some locales, such as the "C" locale, define no thousand
separators whatsoever.  Since many Unix installations are set up to
use the "C" locale because it is the OS default, this problem must be
addressed.  Chris addresse it by forcing the locale to "US", but that
is a step away from the locale model because it consciously overrides
the user's locale preferences.  By doing that, one forces a particular
way of grouping thousands, without the possibility to using a
different grouping characters or to group by a different number of
digits (some locales group by tens of thousands).  That is quite
similar to what you get when you implement the desired grouping
yourself.

Setting the locale makes the code platform-dependent because different
platforms have different locale names.  For example, Chris's code
fails for me with "unsupported locale name" -- apparently, my system
calls the US locale is "en_US.utf8".  (Even specifying "en_US" doesn't
work.  It might be a Python or system problem, but it just doesn't
work.).  Finally, it makes the code OS-installation-dependent -- even
under the same OS, different installs can and do set up different
locales.

If his number presentation calls for thousand separators, coding them
manually is not an unreasonable implementation choice.

> It seems like you are looking for a spoonfed solution rather than
> looking for guidance on how to solve the problem for yourself. If
> I'm wrong about that assessment, I apologize in advance.

No argument here.


From timr at probo.com  Sun Oct 28 19:24:51 2007
From: timr at probo.com (Tim Roberts)
Date: Sun, 28 Oct 2007 23:24:51 GMT
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl><1193438763.190428.134710@q5g2000prf.googlegroups.com><87tzodii6i.fsf@benfinney.id.au><1193494184.618613.81090@50g2000hsm.googlegroups.com>
	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
	<mailman.527.1193558188.13605.python-list@python.org>
Message-ID: <ef6ai3tl42fbotdk1tcburefo9he4ptio2@4ax.com>

"Hendrik van Rooyen" <mail at microcorp.co.za> wrote:

>"Paul Hankin" <p...l.com>wrote:
>
>> Even clearer is not to allow octal literals :) Is there *any* use for
>> them?
>
>I tend to agree with this point of view - but I fear it will set up a howl
>of protest amongst the Brits who cut their teeth on 24 bit ICT/ICL 
>equipment...

As a long-time Control Data employee, I know that 60-bit words and 18-bit
addresses meant that I could do octal arithmetic nearly as fast as decimal.
On the other hand, Python doesn't run on the 6000s...
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From freeaircon at gmail.com  Tue Oct  2 13:19:26 2007
From: freeaircon at gmail.com (freeaircon at gmail.com)
Date: Tue, 02 Oct 2007 17:19:26 -0000
Subject: Air Conditioners
Message-ID: <1191345566.445612.323570@g4g2000hsf.googlegroups.com>



http://freeaircon.blogspot.com/



From ggpolo at gmail.com  Fri Oct 26 09:49:31 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Fri, 26 Oct 2007 11:49:31 -0200
Subject: .py to sqlite translator [1 of 2]
In-Reply-To: <1193372359.928929.31310@19g2000hsx.googlegroups.com>
References: <1193372359.928929.31310@19g2000hsx.googlegroups.com>
Message-ID: <ac2200130710260649g598b05ejcb39743197b8b493@mail.gmail.com>

2007/10/26, smitty1e <smitty1e at gmail.com>:
> Disclaimer(s): the author is nobody's pythonista.  This could probably
> be done more elegantly.
> The driver for the effort is to get PyMacs to work with new-style
> classes.
> This rendering stage stands alone, and might be used for other
> purposes.
> A subsequent post will show using the resulting file to produce (I
> think valid) .el trampoline
> signatures for PyMacs.
> If nothing else, it shows some python internals in an interesting way.
> Tested against version 2.5.1
> Maybe "lumberjack.py" would be a better name, since "It cuts down
> trees, goes real slow, and uses disk galore.  Wishes it'd been
> webfoot[1], just like its dear author".
> Cheers,
> Chris
>
> [1] Author was born in Oregon.
>
> #A sample file:
> class sample( object ):
>     """fairly trivial sample class for demonstration purposes.
>     """
>     def __init__( self
>                 , some_string ):
>         self.hold_it = some_string
>
>     def show( self ):
>         print self.hold_it
>
> #Invocation:
> # ./pysqlrender.py -f sample.py -o output
>
> #Script:
> #!/usr/bin/python
>
> """Script to dump the parse tree of an input file to a SQLite
> database.
> """
>
> from   optparse import OptionParser
> import os
> import parser
> import pprint
> import re
> import sqlite3
> import symbol
> import token
> import types
>
> from   types import ListType \
>                   , TupleType
>
> target_table  = """CREATE TABLE tbl_parse_tree        (
>                      parse_tree_id     INTEGER PRIMARY KEY
> AUTOINCREMENT
>                    , parse_tree_symbol_id
>                    , parse_tree_indent
>                    , parse_tree_value  );"""
>
> target_insert = """INSERT INTO tbl_parse_tree        (
>                      parse_tree_symbol_id
>                    , parse_tree_indent
>                    , parse_tree_value )
>                    VALUES         (%s,  %s, '%s' );"""
>
> symbol_table  = """CREATE TABLE tlp_parse_tree_symbol (
>                      parse_tree_symbol_id INTEGER PRIMARY KEY
>                    , parse_tree_symbol_val   );"""
> symbol_insert = """INSERT INTO tlp_parse_tree_symbol (
>                      parse_tree_symbol_id
>                    , parse_tree_symbol_val )
>                    VALUES ( %s, '%s' );"""
>
> class symbol_manager( object ):
>     """ Class to merge symbols and tokens for ease of use.
>     """
>     def __init__( self
>                 , c    ):
>         for k in symbol.sym_name:
>             sql = symbol_insert % ( k, symbol.sym_name[k] )
>             try:
>                 c.execute( sql )
>             except sqlite3.IntegrityError:
>                 pass
>         for k in token.tok_name:
>             sql = symbol_insert % ( k, token.tok_name[k] )
>             try:
>                 c.execute( sql )
>             except sqlite3.IntegrityError:
>                 pass
>
>     def get_symbol( self
>                   , key  ):
>         ret = -1
>         if   symbol.sym_name.has_key(key): ret = symbol.sym_name[key]
>         elif token.tok_name.has_key(key) : ret = token.tok_name[ key]
>         return ret
>
>     def recurse_it( self, tester ):
>         """Check to see if dump_tup should recurse
>         """
>         if self.get_symbol(tester) > 0:
>             return True
>         return False
>
> class stocker( object ):
>     """Remembers the depth of the tree and effects the INSERTs
>        into the output file.
>     """
>     def __init__( self ):
>         self.cur_indent = 0
>
>     def do_symbol( self
>                  , c
>                  , symbol_value
>                  , val  = "" ):
>         """Stuff something from the parse tree into the database
> table.
>         """
>         if   symbol_value==5: self.cur_indent += 1
>         elif symbol_value==6: self.cur_indent -= 1
>
>         try:
>             sql = target_insert    \
>                 % ( symbol_value
>                   , self.cur_indent
>                   , re.sub( "'", "`", str(val) ))
>             c.execute( sql  )
>         except AttributeError:
>             print "connection bad in lexer"
>         except sqlite3.OperationalError:
>             print "suckage at indent of %s for %s" \
>                 % (self.cur_indent, sql)
>
> def dump_tup( tup
>             , sym
>             , c
>             , stok ):
>     """Recursive function to descend TUP and analyze its elements.
>          tup       parse tree of a file, rendered as a tuple
>          sym       dictionary rendered from symbol module
>          c         live database cursor
>          stok      output object effect token storage
>     """
>     for node in tup:
>         typ = type( node )
>         r   = getattr( typ
>                      , "__repr__"
>                      , None       )
>
>         if (issubclass(typ, tuple) and r is tuple.__repr__):
>
>             if token.tok_name.has_key( node[0] ):
>                 stok.do_symbol( c
>                               , node[0]
>                               , node[1] )
>             elif sym.recurse_it( node[0] ):
>                 stok.do_symbol( c
>                               , node[0]
>                               , '__py__' ) #If you say node[1] here,
>                                            # the sqlite file is fat
>                                            # and instructive
>                 for node2 in node[1:]:
>                     dump_tup( node2
>                             , sym
>                             , c
>                             , stok )
>             else:
>                 stok.do_symbol( c
>                               , node[0]
>                               , node[1] )
>                 dump_tup(  node[1]
>                          , sym
>                          , c
>                          , stok )
>         else:
>             stok.do_symbol( c
>                           , 0
>                           , node )
>
>
> def convert_python_source_tree_to_table( file_name
>                                        , target_name ):
>     """Retrieve information from the parse tree of a source file.
>     Create an output database file in sqlite.
>     Make a table in there, and then procede to stuff the flattened
> input parse tree into it.
>
>     file_name   Name of the file to read Python source code from.
>     target_name Name for the sqlite database
>     """
>     x    = open( file_name ).readlines()
>     y    = []
>     [y.append( line.replace("\r\n","")   ) for line in x]
>
>     ast  = parser.suite(    "\n".join(y) )
>     conn = sqlite3.connect( target_name  )
>     conn.isolation_level  = None
>     c    = conn.cursor()
>     c.execute(              target_table )
>     c.execute(              symbol_table )
>     sym  = symbol_manager(  c            )
>     stok = stocker()
>
>     #pprint.pprint( ast.totuple() )
>     dump_tup( ast.totuple()
>             , sym
>             , c
>             , stok )
>
> def main():
>     usage  = "usage: %prog [options] arg"
>     parser = OptionParser(usage)
>     parser.add_option("-f", "--file",  dest="filename"
>                      , action="store", type="string"
>                      , help  ="read python source from FILENAME")
>     #TODO: test for existence of output file, eject if exists
>     parser.add_option("-o", "--output",dest="output"
>                      , action="store", type="string"
>                      , help  ="name of sqlite output file")
>     (options, args) = parser.parse_args()
>
>     convert_python_source_tree_to_table(  options.filename
>                                        ,  options.output   )
>
> if __name__ == "__main__":
>     main()
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

Hello, I took a look at that script and I have made some changes.
Before posting my version let me comment on somethings..

First, you probably noticed that it gets slow as you run the script
with "larger" files. All the time "wasted" on this is because you set
isolation level to None, so there are a lot of commits and commits
make this slow. Removing that isolation level and doing only one
commit after dump_tup cuts basically all time wasted;

Second, don't use "%s" to insert values into your sql query string
please. For sqlite you should substitute those by "?"s and pass a
tuple to it;

Third, don't use "yourdict.has_key(key)", use "key in yourdict". I
have read the Disclamer at top, but maybe you wanted to hear
something;

Fourth, It could be the email client but did you use 3 spaces for indent ? :/ ;

Fifth, other observations are left to the reader as exercise

My version:
#!/usr/bin/env python

"""Script to dump the parse tree of an input file to a SQLite
database.
"""

import token
import parser
import symbol
import sqlite3
from optparse import OptionParser

TARGET_TABLE  = """CREATE TABLE tbl_parse_tree (
        parse_tree_id    INTEGER PRIMARY KEY AUTOINCREMENT,
        parse_tree_symbol_id,
        parse_tree_indent,
        parse_tree_value)"""

TARGET_INSERT = """INSERT INTO tbl_parse_tree
        (parse_tree_symbol_id, parse_tree_indent, parse_tree_value)
        VALUES (?, ?, ?)"""

SYMBOL_TABLE  = """CREATE TABLE tlp_parse_tree_symbol (
        parse_tree_symbol_id    INTEGER PRIMARY KEY,
        parse_tree_symbol_val)"""

SYMBOL_INSERT = """INSERT INTO tlp_parse_tree_symbol
        (parse_tree_symbol_id, parse_tree_symbol_val) VALUES (?, ?)"""

class SymbolManager(object):
    """Class to merge symbols and tokens for ease of use."""

    def __init__(self, c):
        self.to_merge = token.tok_name.copy()
        self.to_merge.update(symbol.sym_name)

        for k, v in self.to_merge.iteritems():
            c.execute(SYMBOL_INSERT, (k, v))

    def get_symbol(self, key):
        return self.to_merge[key] if key in self.to_merge else -1

    def recurse_it(self, tester):
        """Check to see if dump_tup should recurse"""
        if self.get_symbol(tester) > 0:
            return True

        return False


class Stocker(object):
    """Remembers the depth of the tree and effects the INSERTs
    into the output file.
    """

    def __init__(self):
        self.cur_indent = 0

    def do_symbol(self, c, symbol_value, val=""):
        """Stuff something from the parse tree into the database table."""
        if symbol_value == 5:
            self.cur_indent += 1

        elif symbol_value==6:
            self.cur_indent -= 1

        c.execute(TARGET_INSERT, (symbol_value, self.cur_indent,
                                  str(val).replace("'", "`")))


def dump_tup(tup, sym, c, stok):
    """Recursive function to descend TUP and analyze its elements.
        tup       parse tree of a file, rendered as a tuple
        sym       dictionary rendered from symbol module
        c         live database cursor
        stok      output object effect token storage
    """
    for node in tup:
        typ = type(node)
        r = getattr(typ, "__repr__", None)

        if (issubclass(typ, tuple) and r is tuple.__repr__):
            if node[0] in token.tok_name:
                stok.do_symbol(c, node[0], node[1])
            elif sym.recurse_it(node[0]):
                #If you say node[1] here, the sqlite file is fat
                # and instructive
                stok.do_symbol(c, node[0], '__py__' )
                for node2 in node[1:]:
                    dump_tup(node2, sym, c, stok)
            else:
                stok.do_symbol(c, node[0], node[1])
                dump_tup(node[1], sym, c, stok)

        else:
            stok.do_symbol(c, 0, node)

def python_source_tree_to_db(file_name, target_name):
    """Retrieve information from the parse tree of a source file.
    Create an output database file in sqlite.
    Make a table in there, and then procede to stuff the flattened
    input parse tree into it.

    file_name   Name of the file to read Python source code from.
    target_name Name for the sqlite database
    """
    conn = sqlite3.connect(target_name)
    c = conn.cursor()
    c.execute(TARGET_TABLE)
    c.execute(SYMBOL_TABLE)

    ast = parser.suite(''.join(open(file_name, 'rU').readlines()))
    sym = SymbolManager(c)
    stok = Stocker()

    #pprint.pprint(ast.totuple())
    dump_tup(ast.totuple(), sym, c, stok)
    conn.commit()

def main():
    oparser = OptionParser("usage: %prog [options] arg")
    oparser.add_option("-f", "--file", dest="filename",
                      help="read python source from FILENAME")
    oparser.add_option("-o", "--output", dest="output",
                      help="name of sqlite output file")
    (options, _) = oparser.parse_args()

    if not options.filename or not options.output:
        oparser.print_help()
    else:
        try:
            open(options.output)
            print "Output file exists, chose another one."
        except IOError:
            python_source_tree_to_db(options.filename, options.output)


if __name__ == "__main__":
    main()

-- 
-- Guilherme H. Polo Goncalves


From find at my.address.elsewhere  Tue Oct  9 08:50:16 2007
From: find at my.address.elsewhere (Matthias Blume)
Date: Tue, 09 Oct 2007 07:50:16 -0500
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
Message-ID: <m2641g1mgn.fsf@my.address.elsewhere>

"." <foo at bar.biz> writes:

> On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:
>
>> Again I am depressed to encounter a fundamentally new concept that I
>> was all along unheard of. Its not even in paul graham's book where i
>> learnt part of Lisp. Its in Marc Feeley's video.
>> 
>> Can anyone explain:
>> 
>> (1) its origin
> One of the lambda papers, I think.  I don't remember which.

This is a common misconception.  There is very little that
originated from the "lambda" papers.  But they did a marvelous job at
promoting some of the ideas that existed in the PL community for
years.

As for the concept of continuations, there is Scott and Strachey's
work on denotational semantics, and there is Landin's J operator.
(There's probably more that I am forgetting right now.)

>> (6) any good readable references that explain it lucidly ?
>

One of the most lucid explanations of definitional interpreters --
including those that are based on continuation-passing -- are
explained in J. Reynolds' famous 1971 "Definitional Interpreters for
Higher-Order Functions" paper.  (It has been re-published in 1998 in
HOSC.)  The paper also explains how to perform defunctionalization,
which can be seen as a way to compile (and even hand-compile)
higher-order programs.

Matthias


From martin at marcher.name  Mon Oct 29 07:46:06 2007
From: martin at marcher.name (Martin Marcher)
Date: Mon, 29 Oct 2007 12:46:06 +0100
Subject: A class question
In-Reply-To: <87ejfe457k.fsf@mulj.homelinux.net>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
Message-ID: <5fa6c12e0710290446u1505402ep48d9db3515bc09c3@mail.gmail.com>

2007/10/29, Hrvoje Niksic <hniksic at xemacs.org>:
> Sbe unpx inyhr, urer vf n cbffvoyr vzcyrzragngvba:
> ...

was that on purpose?

martin

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From americanman67 at yahoo.com  Wed Oct 24 23:10:36 2007
From: americanman67 at yahoo.com (Don Bro)
Date: Thu, 25 Oct 2007 11:10:36 +0800 (CST)
Subject: How to change IP Address by Python program on Win Platform
Message-ID: <56184.27571.qm@web45510.mail.sp1.yahoo.com>

is there software available to change or hide my ip add?

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/62b4298a/attachment.html>

From bcd at pvv.ntnu.no  Wed Oct  3 15:23:22 2007
From: bcd at pvv.ntnu.no (Bent C Dalager)
Date: Wed, 3 Oct 2007 19:23:22 +0000 (UTC)
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<85sl4sqckf.fsf@lola.goethe.zz> <fe0npc$cvq$1@orkan.itea.ntnu.no>
	<85hcl8qaj7.fsf@lola.goethe.zz>
Message-ID: <fe0q7a$e42$1@orkan.itea.ntnu.no>

In article <85hcl8qaj7.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>bcd at pvv.ntnu.no (Bent C Dalager) writes:
>
>> I have never claimed equivalence. What I have made claims about are
>> the properties of one of the meanings of a word. Specifically, my
>> claim is that "free" is a reasonable description of some one or some
>> thing that has been "liberated".
>
>But it suggests that the natural state would be the unfree state.

Would this be a good thing? Would it be a bad thing? What is your
point?

Cheers
	Bent D
-- 
Bent Dalager - bcd at pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 09:02:45 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 15:02:45 +0200
Subject: [OT, definitively] Re: The Modernization of Emacs: terminology buffer
	and keybinding
In-Reply-To: <mailman.1512.1191513969.2658.python-list@python.org>
References: <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>	<47041303$0$13930$fa0fcedb@news.zen.co.uk>	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>	<fe26tn$vs0$5@lust.ihug.co.nz>	<mailman.1501.1191493515.2658.python-list@python.org>	<fe2jdd$84p$1@lust.ihug.co.nz>	<mailman.1503.1191498918.2658.python-list@python.org>	<4704fd8e$0$16099$9b4e6d93@newsspool1.arcor-online.net>
	<mailman.1512.1191513969.2658.python-list@python.org>
Message-ID: <47055042$0$18301$426a74cc@news.free.fr>

J. Clifford Dyer a ?crit :
> On Thu, Oct 04, 2007 at 04:49:50PM +0200, Wildemar Wildenburger wrote
> regarding Re: The Modernization of Emacs: terminology buffer and
> keybinding:
> 
>> Steve Holden wrote:
>>> Lawrence D'Oliveiro wrote:
>>>> In message
>>>> <mailman.1501.1191493515.2658.python-list at python.org>, Steve 
>>>> Holden wrote:
>>>>> Lawrence D'Oliveiro wrote:
>>>>>> In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>,
>>>>>> George Neuner wrote:

<OT - now you're warned>

>>>>>>> The Christian Bible says "In the beginning was the
>>>>>>> Word..."
>>>>>> 
>>>>>> Which is an English mistranslation from the Greek "logos".
>>>>> 
(snip)
 >
> Yeah, different book.  "In the beginning was the Word" is John's
> cosmology.  Written in Greek long after Genesis, and a couple decades
> after Jesus was executed.
> 
> Also, I wouldn't so much say that "word" is a mistranslation.  Logos
> does indeed mean "word" in common usage, it just also carries along
> the baggage of reason, "logic" (for a loose definintion of which),
> rationality, and so forth.  So it's not so much inaccurate as
> inadequate.

FWIW, the canonical french translation uses 'verb' instead of 'word', 
and AFAICT it's more appropriate (at least in French - my English is 
mostly technical so I may miss some subtilities here) since it carries a 
notion of action too.

Now another (and certainly far worse) mistranslation (for both John and 
Genesis) is this awful 'in  the beginning was', when the less imperfect 
translation from Hebrew (which John's text, while written in Greek, is 
clearly referencing here) would be 'in the principle is'. See, nothing 
historic here, it's *not* the 'beginnning' of something past, it's about 
the present. Also, since Christ is clearly identified with the Verb by 
John, saying 'in the principle is the verb' is also a way of identifying 
God with the principle...

Hem... Sorry, I disgressed... Back to Python, now !-)
</OT>


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 05:16:43 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 10:16:43 +0100
Subject: A class question
In-Reply-To: <mailman.567.1193646908.13605.python-list@python.org>
References: <mailman.567.1193646908.13605.python-list@python.org>
Message-ID: <4725a4fa$0$6568$426a74cc@news.free.fr>

Donn Ingle a ?crit :
> Hello,
> 
> Is there a way I can, for debugging, access the instance variable name from
> within a class?
> E.g:
> Class X: 
>  def debug(self):
>   print "My instance var is %s" % (some magic Python stuff)
> 
> So that:
>>>> x = X()
>>>> x.debug()
>>>> My Instance var is x
> 
> ( Without passing the name in like: x=X(name="x") ) 

What should be the "variable name" in the following situations ?

a = b = c = X()
X().debug()




From lasses_weil at klapptsowieso.net  Sun Oct 14 12:34:35 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 14 Oct 2007 18:34:35 +0200
Subject: GLE-like python package
In-Reply-To: <1192378346.740393.30680@e34g2000pro.googlegroups.com>
References: <47123bc8$0$4530$9b4e6d93@newsspool3.arcor-online.net>
	<1192378346.740393.30680@e34g2000pro.googlegroups.com>
Message-ID: <4712451c$0$16115$9b4e6d93@newsspool1.arcor-online.net>

Cesar G. Miguel wrote:
> I think this is what you're looking for:
> 
> http://pyx.sourceforge.net/
> 
It damn sure is (a straight ripoff of GLE ;))!

The syntax seems a bit messier than GLE (naturally) but since it is 
python I'm willing to bite that bullet.

Thanks :)
/W


From praddyjindal at gmail.com  Wed Oct 31 05:27:10 2007
From: praddyjindal at gmail.com (praddy)
Date: Wed, 31 Oct 2007 09:27:10 -0000
Subject: object inheritance
In-Reply-To: <1193801186.600457.5660@t8g2000prg.googlegroups.com>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
	<mailman.518.1193515677.13605.python-list@python.org>
	<1193801186.600457.5660@t8g2000prg.googlegroups.com>
Message-ID: <1193822830.710322.45860@o38g2000hse.googlegroups.com>

On Oct 31, 8:26 am, Anand <anandol... at gmail.com> wrote:
> On Oct 28, 1:16 am, Pradeep Jindal <praddyjin... at gmail.com> wrote:
>
>
>
> > On Friday 26 Oct 2007 6:21:57 pm Anand wrote:
>
> > > On Oct 26, 5:31 pm, "Pradeep Jindal" <praddyjin... at gmail.com> wrote:
> > > > Can you tell any specific use case for doing this?
>
> > > I have many implementaions of a db interface.
>
> > > SimpleDB - simple implementation
> > > BetterDB - optimized implementation
> > > CachedDB - an implementation with caching of queries
> > > RestrictedDB - implementation with permissions
>
> > > Now, I want to combine these implementations and use.
> > > Typical use case scenarios are:
>
> > > db = RestrictedDB(CachedDB(SimpleDB()))
> > > db = RestrictedDB(SimpleDB())
> > > db = RestrictedDB(BetterDB())
> > > db = RestrictedDB(CachedDB(BetterDB())
> > > db = CachedDB(SimpleDB())
> > > etc..
>
> > I agree with Duncan. According to me, this should be called Delegation rather
> > than inheritance. And delegation should work without any conflicts of
> > identifier names and all that. I think, it should be all about several
> > objects implementing a protocol (interface) and that should work cleanly.
>
> I don't think so. It is not as simple as delegation.
>
> In the example that I gave previously, call to self.say in A.foo
> calls B.say not A.say, which I think is not possible with delegation.

Let me explain what I meant, its all about several objects (e.g. "a")
implementing a protocol, in your case the "say" method, and some
object (e.g. "b") extending those objects by adding some more
functionality but requiring that those objects, that it extends from,
follow a specific protocol ("a" must have say method). Also note that,
"B" or "b" is partial implementation of what its meant for, I mean,
calling "b"'s "say" will not work if "b" has not yet extended from "a"
or any other object implementing the same protocol.

Less time, can't get into more details. Bye for now.

Thanks
-Pradeep



From lasses_weil at klapptsowieso.net  Mon Oct  8 05:33:06 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Mon, 08 Oct 2007 11:33:06 +0200
Subject: Top Programming Languages of 2013
In-Reply-To: <0vgjg3t1ki05lsgigio0csdjnacgri8mlq@4ax.com>
References: <mailman.1621.1191737112.2658.python-list@python.org>
	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>
	<47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
	<0vgjg3t1ki05lsgigio0csdjnacgri8mlq@4ax.com>
Message-ID: <4709f952$0$7685$9b4e6d93@newsspool2.arcor-online.net>

Tim Roberts wrote:
> Wildemar Wildenburger <lasses_weil at klapptsowieso.net> wrote:
>> import friends
>> import sex
>>
>> try:
>>     sex.have()
>> except ErrectionError, PrematureError:
>>     pass
>> finally:
>>     sex.brag(friends)
> 
> Well, if "ErrectionError" ever becomes a real exception, I certainly get a
> boatload of email every day from people offering to help me deal with it.

Yeah, because they'va actually spell-checked it. ;)


From afaNOSPAM at neuf.fr  Thu Oct  4 17:28:44 2007
From: afaNOSPAM at neuf.fr (Amaury Forgeot d'Arc)
Date: Thu, 04 Oct 2007 23:28:44 +0200
Subject: Is there a nicer way to do this?
In-Reply-To: <87ejgawpug.fsf@keizer.soze.com>
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <fe3lu7$2elo$1@talisker.lacave.net>

Hello,
Stefan Arentz a ?crit :
> Is there a better way to do the following?
> 
> attributes = ['foo', 'bar']
> 
> attributeNames = {}
> n = 1
> for attribute in attributes:
>    attributeNames["AttributeName.%d" % n] = attribute
>    n = n + 1
> 
> It works, but I am wondering if there is a more pythonic way to
> do this.
> 
>  S.

You could use enumerate() to number the items (careful it starts with 0):

   attributes = ['foo', 'bar']
   attributeNames = {}
   for n, attribute in enumerate(attributes):
       attributeNames["AttributeName.%d" % (n+1)] = attribute


Then use a generator expression to feed the dict:

   attributes = ['foo', 'bar']
   attributeNames = dict(("AttributeName.%d" % (n+1), attribute)
                         for n, attribute in enumerate(attributes))

Hope this helps,

-- 
Amaury


From kadeko at gmail.com  Wed Oct 31 08:48:18 2007
From: kadeko at gmail.com (looping)
Date: Wed, 31 Oct 2007 05:48:18 -0700
Subject: Creating a temporary file in Python
In-Reply-To: <5ora0aFo7tsmU1@mid.uni-berlin.de>
References: <1193832119.872710.108920@k79g2000hse.googlegroups.com>
	<5ora0aFo7tsmU1@mid.uni-berlin.de>
Message-ID: <1193834898.945261.171310@z9g2000hsf.googlegroups.com>

On Oct 31, 2:16 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:

> I'm not an expert, but I think you need to close the file first - you under
> windows here, which can be picky about such stuff AFAIK. Or maybe there is
> some other mode-specifier.
>
> Diez

Actually closing the file delete it without any chance to use it...

Well I changed my code this way:

filename = tempfile.mktemp(suffix='.sql')
f = open(filename, 'wb')
try:
    f.write(txt.encode('cp1252'))
    f.close()
    p = Popen([SQL_PLUS, '-s', dsn,
        '@', SQL_PLUS_SCRIPT, f.name],
        stdout=PIPE, stderr=STDOUT)
    p.wait()
finally:
    os.remove(filename)

I understand the security issues of temporary file (as explained in
Python doc) but maybe standard lib need a NamedTemporaryFile that
could be used by another process.



From mrstephengross at hotmail.com  Tue Oct 23 14:54:06 2007
From: mrstephengross at hotmail.com (mrstephengross)
Date: Tue, 23 Oct 2007 18:54:06 -0000
Subject: Can't refer to base class attribute?
Message-ID: <1193165646.296297.152000@y27g2000pre.googlegroups.com>

I've got a Base class with an attribute "foo" (of type Foo), and a
Derived class (derived from Base). In Derived's constructor, I try to
refer to Base.foo, but python complains:
  AttributeError: class Base has no attribute 'foo'

Any ideas? (code below)

=== CODE ===
#!/usr/bin/python

class Foo:
  def __init__ (self):
    self.x = 3

class Base:
  def __init__ (self):
    self.foo = Foo()

class Derived(Base):
  def __init__(self):
    Base.__init__(self)
    Base.foo.x = 5

Derived()
=== EOF ===



From kay.schluehr at gmx.net  Fri Oct  5 06:19:44 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 05 Oct 2007 03:19:44 -0700
Subject: unit testing
In-Reply-To: <47054a3d$0$16347$426a74cc@news.free.fr>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
Message-ID: <1191579584.051683.92950@o3g2000hsb.googlegroups.com>

On Oct 3, 2:37 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> Paul Rubin a ?crit :
>
> > brad <byte8b... at gmail.com> writes:
>
> >>Does anyone else feel that unittesting is too much work? Not in
> >>general, just the official unittest module for small to medium sized
> >>projects?
>
> > Yeah, unittest is sort of a Java-ism.  You might try the newer doctest
> > module instead.
>
> Or py.test or nose, which are both more complete than doctest and more
> pythonics than the unittest module.

But you need to distribute testframeworks, when you just want to
distribute tests.



From jcd at sdf.lonestar.org  Tue Oct  2 08:49:01 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 2 Oct 2007 08:49:01 -0400
Subject: problem with special built-in method   __contains__,
In-Reply-To: <1191323678.609701.258550@y42g2000hsy.googlegroups.com>
References: <1191323678.609701.258550@y42g2000hsy.googlegroups.com>
Message-ID: <20071002124901.GA9320@sdf.lonestar.org>

On Tue, Oct 02, 2007 at 11:14:38AM -0000, eboy98 at gmail.com wrote regarding problem with special built-in method   __contains__,:
> 
> if i have a dictionary  name number ....and i want to    ask the list
> whether a particular key already
> exists.
> 
> >>> print number
> {'octal': '1234567', 'binary': '10100101', 'decimal': '1234567890',
> 'hexadecimal': '1-9,a-f'}
> 
>  i got  error..after execute
> 
>  >>>number._contains_("test")
> 
> Traceback (most recent call last):
>   File "<pyshell#15>", line 1, in <module>
>     number._contains_("test")
> AttributeError: 'dict' object has no attribute '_contains_'
> 

First of all, the special methods contain a *double* underscore before and after the name, so it's not _contains_, it's __contains__.

Secondly, for most basic operations, you shouldn't have to use these special methods directly.  They are bound to other funtionality in Python.  So instead of:


number.__contains('test')

try the following:

'test' in number  

Cheers,
Cliff


From hniksic at xemacs.org  Thu Oct  4 02:33:39 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 04 Oct 2007 08:33:39 +0200
Subject: migrating to packages
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
Message-ID: <87hcl7jsn0.fsf@mulj.homelinux.net>

gherzig at fmed.uba.ar writes:

> I will expose my case quicly.
> The MYCLASES.py file contains the A class, so i can use
> from MYCLASES import A
> a = ()
>
> Using the "package mode" (wich looks fine BTW), having the simple
> MYCLASES/
>      __init__.py
>      A.py
>
> forces my (i guess) to use the
> from MYCLASES.A import A

Exactly.  Using mypackage.mymodule instead of just mymodule is the
entire *point* of a package.  That way, if someone creates another
module with using the same name (mymodule), it won't conflict with
yours.  If you don't want to change mymodule to mypackage.mymodule,
why use a package in the first place?


From larry.bates at websafe.com  Thu Oct 11 15:00:54 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 11 Oct 2007 14:00:54 -0500
Subject: problem with wxPanel derivation class
In-Reply-To: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
References: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
Message-ID: <RP-dnTU05Kd-75PanZ2dnUVZ_rbinZ2d@comcast.com>

none wrote:
> wxGlade created a simple Frame with a panel a sizer and 3 wxControls ,
> saticText, TextCtrl, and a Button.
> 
> The resulting code works fine.
> 
> Now the problem.
> I wish to make a separate class derrived from wxPanel that has the sized
> and controls as above.  It jusst won't work
> 
> 
> <code id="gladeGen" class="works_ok">
> #!/usr/bin/env python
> # -*- coding: ISO-8859-1 -*-
> # generated by wxGlade 0.4cvs on Thu Oct 11 13:26:19 2007
> 
> import wx
> 
> class MyFrameOne(wx.Frame):
>     def __init__(self, *args, **kwds):
>         # begin wxGlade: MyFrameOne.__init__
>         kwds["style"] = wx.DEFAULT_FRAME_STYLE
>         wx.Frame.__init__(self, *args, **kwds)
>         self.panel = wx.Panel(self, -1)
>         self.staticbox = wx.StaticBox(self.panel, -1, "StaticBox")
>         self.label = wx.StaticText(self.panel, -1, "Field Name")
>         self.textBox = wx.TextCtrl(self.panel, -1, "Field Value")
>         self.button = wx.Button(self.panel, -1, "Edit")
> 
>         self.__set_properties()
>         self.__do_layout()
>         # end wxGlade
> 
>     def __set_properties(self):
>         # begin wxGlade: MyFrameOne.__set_properties
>         self.SetTitle("frame_1")
>         self.label.SetMinSize((-1, 15))
>         # end wxGlade
> 
>     def __do_layout(self):
>         # begin wxGlade: MyFrameOne.__do_layout
>         sizer_1 = wx.BoxSizer(wx.VERTICAL)
>         sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
>         sizer.Add(self.label, 0, wx.ALL, 3)
>         sizer.Add(self.textBox, 0, wx.ALL, 3)
>         sizer.Add(self.button, 0, wx.ALL, 3)
>         self.panel.SetAutoLayout(True)
>         self.panel.SetSizer(sizer)
>         sizer.Fit(self.panel)
>         sizer.SetSizeHints(self.panel)
>         sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
>         self.SetAutoLayout(True)
>         self.SetSizer(sizer_1)
>         sizer_1.Fit(self)
>         sizer_1.SetSizeHints(self)
>         self.Layout()
>         # end wxGlade
> 
> # end of class MyFrameOne
> 
> ## modified from BoaApp
> class App(wx.App):
> 	def OnInit(self):
> 		wx.InitAllImageHandlers()
> 		self.main = MyFrameOne(None)
> 		self.main.Show()
> 		self.SetTopWindow(self.main)
> 		return True
> 
> def main():
> 	application = App(0)
> 	application.MainLoop()
> 
> if __name__ == '__main__':
> 	main()
> 
> </code>
> 
> <code id="modifiedFromGlade" class="fails">
> #!/usr/bin/env python
> # -*- coding: ISO-8859-1 -*-
> #The commented out code from MyFrame was moved to class Panel \
> # and appropriately modified by changing self.panel to self etc
> 
> import wx
> 
> class MyFrameTwo(wx.Frame):
> 	def __init__(self, *args, **kwds):
> 		# begin wxGlade: MyFrameTwo.__init__
> 		kwds["style"] = wx.DEFAULT_FRAME_STYLE
> 		wx.Frame.__init__(self, *args, **kwds)
> ##		self.panel = panel(self, -1)
> 		self.panel = Panel(self, -1)
> 		self.__set_properties()
> 		self.__do_layout()
> 		# end wxGlade
> 
> 	def __set_properties(self):
> 		# begin wxGlade: MyFrameTwo.__set_properties
> 		self.SetTitle("frame_1")
> 		self.label.SetMinSize((-1, 15))
> 		# end wxGlade
> 
> 	def __do_layout(self):
> 		# begin wxGlade: MyFrameTwo.__do_layout
> 		sizer_1 = wx.BoxSizer(wx.VERTICAL)
> ##		sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
> ##		sizer.Add(self.label, 0, wx.ALL, 3)
> ##		sizer.Add(self.textBox, 0, wx.ALL, 3)
> ##		sizer.Add(self.button, 0, wx.ALL, 3)
> ####		self.panel.SetAutoLayout(True)
> ##		self.panel.SetSizer(sizer)
> ##		sizer.Fit(self.panel)
> ##		sizer.SetSizeHints(self.panel)
> 		sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
> 		self.SetAutoLayout(True)
> 		self.SetSizer(sizer_1)
> 		sizer_1.Fit(self)
> 		sizer_1.SetSizeHints(self)
> 		self.Layout()
> 		# end wxGlade
> 
> # end of class MyFrameTwo
> 
> 
> class Panel (wx.Panel):
> 	def __init__(self, *args, **kwds):
> 		self.staticbox = wx.StaticBox(self, -1, "StaticBox")
> 		self.label = wx.StaticText(self, -1, "Field Name")
> 		self.textBox = wx.TextCtrl(self, -1, "Field Value")
> 		self.button = wx.Button(self, -1, "Edit")
> 		__doLayout()
> 
> 	def __doLayout():
> 		sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
> 		sizer.Add(self.label, 0, wx.ALL, 3)
> 		sizer.Add(self.textBox, 0, wx.ALL, 3)
> 		sizer.Add(self.button, 0, wx.ALL, 3)
> 		
> 		# maybe comment this and uncommennt  frame2's corresponding line
> 		panel.SetAutoLayout(True)
> 		
> 		self.SetSizer(sizer)
> 		sizer.Fit(self.panel)
> 		sizer.SetSizeHints(self.panel)
> 		
> 
> ## modified from BoaApp
> class App(wx.App):
> 	def OnInit(self):
> 		wx.InitAllImageHandlers()
> 		self.main = MyFrameTwo(None)
> 		self.main.Show()
> 		self.SetTopWindow(self.main)
> 		return True
> 
> def main():
> 	application = App(0)
> 	application.MainLoop()
> 
> if __name__ == '__main__':
> 	main()
> 
> </code>
> 
> <errorMessages>
>  /home/xaos/xpy/cnc/i2g/prefDialog/test/frame2.py
> Traceback (most recent call last):
>  File "/home/xaos/xpy/cnc/i2g/prefDialog/test/frame2.py", line 82, in ?
> main()
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 78, in main
> application = App(0)
>  File
> "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
> 7473, in __init__
> self._BootstrapApp()
>  File
> "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
> 7125, in _BootstrapApp
> return _core_.PyApp__BootstrapApp(*args, **kwargs)
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 72, in OnInit
> self.main = MyFrameTwo(None)
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 13, in __init__
> self.panel = Panel(self, -1)
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 48, in __init__
> self.staticbox = wx.StaticBox(self, -1, "StaticBox")
>  File
> "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_controls.py",
> line 990, in __init__
> newobj = _controls_.new_StaticBox(*args, **kwargs)
> TypeError: argument number 1: a 'wxWindow *' is expected, 'Panel' is
> received
> Script terminated.
> 
> </errorMessages>
> 
> 
> It seems as though the complaint is that  a 'wxWindow *' is expected,
> 'Panel' is received
> However, Panel IS a wx.Panel derivative which IS a wx.Window derivative!
> Additionally, the methods in the code of Panel and MyFrameOne seem to be
> identical.
> I can't understand this. Anyone have any thoughts?
> 
> I'm using spe as an IDE
> 
> ~S~
> 
> I taught myself everything I know about Python and wxPython in the lasst
> week and I still don't know everything.
> 
> 
You will probably get better results if you post this to 
gmane.com.python.wxpython list as it is specific to wxPython.

-Larry


From rdm at rcblue.com  Mon Oct 29 13:39:49 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 10:39:49 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <20071029165317.7009D1E4012@bag.python.org>
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
	<20071029165317.7009D1E4012@bag.python.org>
Message-ID: <20071029174011.D22641E4029@bag.python.org>

At 09:53 AM 10/29/2007, Dick Moores wrote:
>At 09:26 AM 10/29/2007, Gabriel Genellina wrote:
> >On 29 oct, 09:23, Dick Moores <r... at rcblue.com> wrote:
> >
> > > >while True:
> > > >     if msvcrt.getch() == '\r':
> > >
> > > I tried it and find that without the msvcrt.kbhit the first key I hit
> > > doesn't do anything. I have to hit that key again, or another key.
> >
> >I'd say there is a logic error in your program then; keys don't "do
> >anything" by themselves.
> >Try posting a small sample, telling what you get and what you expect.
>
>Huh. Works now.
>
>import msvcrt
>while True:
>      key = msvcrt.getch()
>      if key == 'h':
>          print 'Hello'
>      if key == 'b':
>          print 'Bye'
>      if key == '\r': # 'Enter' key
>          break
>
>Dick

But here's a case where it seems I do need the

if msvcrt.kbhit() line

=========================
#!/usr/bin/env python
#coding=utf-8
import time
import msvcrt
timeNow = time.time()
oldTimeNow = timeNow
while True:
     if msvcrt.kbhit():
         key = msvcrt.getch()
         if key == 'h':
             print 'Hello'
         if key == 'b':
             print 'Bye'
         if key == '\r': # Enter key
             break
     timeNow = time.time()
     if timeNow - oldTimeNow > 5:
         print "5 seconds passed"
         oldTimeNow = timeNow
==========================

Without that line:
==========================
#!/usr/bin/env python
#coding=utf-8
import time
import msvcrt
timeNow = time.time()
oldTimeNow = timeNow
while True:
     #if msvcrt.kbhit():
     key = msvcrt.getch()
     if key == 'h':
         print 'Hello'
     if key == 'b':
         print 'Bye'
     if key == '\r': # Enter key
         break
     timeNow = time.time()
     if timeNow - oldTimeNow > 5:
         print "5 seconds passed"
         oldTimeNow = timeNow
============================

Without that line the "5 seconds passed" report is printed ONLY after 
a "b" or an "h", not what I want.

Dick



From Scott.Daniels at Acm.Org  Sat Oct 20 10:23:55 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sat, 20 Oct 2007 07:23:55 -0700
Subject: where do I need to "tab"?
In-Reply-To: <mailman.241.1192847561.13605.python-list@python.org>
References: <1192845611.102983.310980@i38g2000prf.googlegroups.com>	<13hipiq5fafqn8d@corp.supernews.com>
	<mailman.241.1192847561.13605.python-list@python.org>
Message-ID: <13hk3nmdg60fc50@corp.supernews.com>

Gabriel Genellina wrote:
> En Fri, 19 Oct 2007 23:24:30 -0300, Scott David Daniels 
> ...
>> OK, you have a mix of Python 3,0 and current (2.5.1) Python.
> 
> All examples are OK for 2.5

You are absolutely correct.  Sorry for the misinformation.  I've been
working on 2.3, 2.4, 2.5, and trying 3.0 alphas and had shoved the
(a if b else c) expression to the wrong group mentally.  I try to
stay working in the subset that exists or can be hand-implemented,
so I avoid the 2.5 code so often that I forgot it was ther.

-Scott David Daniels
Scott.Daniels at Acm.Org


From ahanwadi at comcast.net  Wed Oct 10 11:55:52 2007
From: ahanwadi at comcast.net (Ashish Hanwadikar)
Date: Wed, 10 Oct 2007 08:55:52 -0700
Subject: why did MIT drop scheme for python in intro to computing?
In-Reply-To: <13glvegpugvbb19@corp.supernews.com>
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
	<13glvegpugvbb19@corp.supernews.com>
Message-ID: <oYudnUbc952Ea5HanZ2dnUVZ_uCinZ2d@comcast.com>

"Grant Edwards" <grante at visi.com> wrote in message 
news:13glvegpugvbb19 at corp.supernews.com...
> On 2007-10-09, gnuist006 at hotmail.com <gnuist006 at hotmail.com> wrote:
>
>> Does scheme have a gui library?
>
> Yes.  It had a far, far better Tk binding than Python.
>
>  http://kaolin.unice.fr/STk/
>
> I've used both for real-world applications, and STk was _miles_
> ahead of tkinter.  It was a real, native binding to the Tk
> library rather than something stuck together with TCL.  GUI
> widgets were real Scheme objects that acted the way one
> expected them to, rather than wrapped TCL objects.
>
> However, Tk has been largely abandoned in favor of a native
> GTK+ binding
>
>  http://www.stklos.org/
>
> -- 
> Grant Edwards                   grante             Yow!  You should all 
> JUMP
>                                  at               UP AND DOWN for TWO 
> HOURS
>                               visi.com            while I decide on a NEW
>                                                   CAREER!!
I couldn't find any documentation on stklos (other than a few examples) 
regarding its gtk+ binding. Could you please point me to appropriate link?
thanks in advance,
Ashish K Hanwadikar
http://ashish.typepad.com/ 



From sunburned.surveyor at gmail.com  Mon Oct 22 14:05:52 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: Mon, 22 Oct 2007 11:05:52 -0700
Subject: Automatic Generation of Python Class Files
In-Reply-To: <mailman.335.1193073967.13605.python-list@python.org>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
Message-ID: <1193076352.576143.123260@z24g2000prh.googlegroups.com>

On Oct 22, 10:26 am, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/22/07, Sunburned Surveyor <sunburned.surve... at gmail.com> wrote:
>
>
>
>
>
> > I was thinking of a way I could make writing Python Class Files a
> > little less painful. I was considering a Ptyhon script that read a
> > file with a list of property names and method names and then generated
> > a skeleton class file.
>
> > I was even thinking of automatically generating the shell for doc
> > strings and epydoc tags.
>
> > Is there existing scripts that do something like this? If not, I will
> > try to come up with something. If I'm sucessful I'll release the code
> > under the GPL and will report back to the list.
>
> > However, I thought I would check here first so that I don't reinvent
> > the wheel.
>
> > Thanks,
>
> > Scott Huey
>
> I can't think of a single reason why you would ever want to do this,
> since your "list of method and property names" would be just as
> verbose as just typing the actual python code.
>
> Auto generated documentation stubs are considered harmful because they
> take the place of real documentation.- Hide quoted text -
>
> - Show quoted text -

Chris,

You wrote: " can't think of a single reason why you would ever want to
do this,
since your "list of method and property names" would be just as
verbose as just typing the actual python code."

I don't think I understand how this would be the same amount of
typing. Consider the following example that would generate a Monster
class file from an input text file (I only did one property and method
in generated class file.):

Contents of input text file:

[Name]
Fire Breathing Dragon

[Properties]
Strength
Scariness
Endurance

[Methods]
eatMaiden argMaiden
fightKnight argKnight

Generated Python Class File:

def class FireBreathingDragon:

   def getStrength(self):
      """
      Docstring goes here.

      @return
      @rtype
      """
      return self.strength

   def setStrength(self, argStrength):
      """
      Docstring goes here.

      @param argStrength
      @ptype
      """
      return self.strength

   def eatMaiden(self, argMaiden):
      """
      Docstring goes here.

      @param argMaiden
      @ptype
      """






From dannox at gmail.com  Sun Oct  7 12:54:24 2007
From: dannox at gmail.com (whatazor)
Date: Sun, 07 Oct 2007 16:54:24 -0000
Subject: newbie swig c++ to python
In-Reply-To: <1191774922.015497.265680@57g2000hsv.googlegroups.com>
References: <1191774922.015497.265680@57g2000hsv.googlegroups.com>
Message-ID: <1191776064.303325.32090@d55g2000hsg.googlegroups.com>

Now it works, the problem was in the project configuration of the
example, that
put the directory in Addictional Dependencies while it must be in
Addictional Library Directories

bye

w

n 7 Ott, 18:35, whatazor <dan... at gmail.com> wrote:
> Hi all,
> I must wrap some c++ code in python with swig. I try the swig examples
> for VC++ , but when I build the project
> it gives me that error:
> example fatal error LNK1181: cannot open input file 'C:\Programmi
> \Python25\libs.obj'
>
> Any idea?
>
> thank you
>
> w




From paddy3118 at googlemail.com  Wed Oct 31 11:41:32 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Wed, 31 Oct 2007 15:41:32 -0000
Subject: why did these companies choose Tcl over Python
In-Reply-To: <4727B465.1070600@v.loewis.de>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
	<4727B465.1070600@v.loewis.de>
Message-ID: <1193845292.245611.164830@22g2000hsm.googlegroups.com>

On Oct 30, 10:47 pm, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
> > I would prefer to use Python but can't deny how popular Tcl is,  as
> > mentioned above,  so my question is why wasn't Python selected by
> > these companies as the choice of scripting languages for their
> > product?
>
> I think this question needs to be answered on a case-by-case basis,
> but my guess is that it is in most cases historical. Work on Tcl
> started in 1988, and it was the first (major?) embeddable scripting
> language (that is also free software etc). Python wasn't released
> until 1991, and wasn't first recognized as being just as easily
> embeddable (and I think early releases weren't as easily embeddable
> as today's Python is).
>
> Tcl's original objective was to support circuit design, so people
> in that field clearly knew that Tcl worked, but they were likely
> unaware of any alternatives (or else the future of these alternatives
> may have been uncertain).
>
> So at that time, Tcl would have been the obvious (because only)
> choice. Now these products are stuck with Tcl, and redoing all
> the work (including the existing extension modules!) in a different
> programming language would be a lot of work.
>
> Regards,
> Martin

Here is TCL's author talking about its roots: http://www.tcl.tk/about/history.html
The Electronic Design Automation industry was in some ways ahead of
other industries in adopting TCL as its major scripting language but
because of this I think it might now be suffering because, as capable
as TCL is, current EDA tools would benefit from reflecting what is
increasingly an object oriented compiled language core, as Python
objects for user manipulation.

- Paddy.



From bignose+hates-spam at benfinney.id.au  Tue Oct 16 05:05:41 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 19:05:41 +1000
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<873awb5wgw.fsf@benfinney.id.au>
	<m2tzor5uox.fsf@antares.emea.hpqcorp.net>
Message-ID: <87k5pn4efu.fsf@benfinney.id.au>

joanmg at gmail.com (Joan M. Garcia) writes:

> Ben Finney <bignose+hates-spam at benfinney.id.au> writes:
> > Please don't ever recommend 'from foo import *' in end-user
> > documentation. [...]
> 
> Got it, and solved.  Thanks.

Thanks for the quick response.

A further issue, that requires a change of interface: Please comply
with PEP 8 <URL:http://www.python.org/dev/peps/pep-0008/> for your
module interface. In particular, please name classes with TitleCase,
and functions, methods, and instance names with lower_case.

Also: "precision" is the correct spelling of that word.

-- 
 \         "I got up the other day, and everything in my apartment has |
  `\       been stolen and replaced with an exact replica."  -- Steven |
_o__)                                                           Wright |
Ben Finney


From mail at timgolden.me.uk  Wed Oct  3 10:56:52 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Wed, 03 Oct 2007 15:56:52 +0100
Subject: enumerate overflow
In-Reply-To: <4703AC7E.907@holdenweb.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>	<fe088s$9b1$1@sea.gmane.org>
	<4703AA68.7000206@tim.thechases.com> <4703AC7E.907@holdenweb.com>
Message-ID: <4703ADB4.9090801@timgolden.me.uk>

Steve Holden wrote:
> I wouldn't dream of suggesting it's impossible. 
 > I just regard "soon" as less than an hour in
 > commuter's terms, I suppose.

Sadly, speaking as a Londoner, an hour is indeed
"soon" in commuter terms.

TJG



From tokland at gmail.com  Tue Oct 23 07:58:56 2007
From: tokland at gmail.com (tokland at gmail.com)
Date: Tue, 23 Oct 2007 04:58:56 -0700
Subject: Iteration for Factorials
In-Reply-To: <1193089188.812952.241920@v29g2000prd.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193083810.302605.128630@y27g2000pre.googlegroups.com>
	<877ileq40i.fsf@rudin.co.uk>
	<1193089188.812952.241920@v29g2000prd.googlegroups.com>
Message-ID: <1193140736.924933.217960@v23g2000prn.googlegroups.com>

On 22 oct, 23:39, "mensana... at aol.com" <mensana... at aol.com> wrote:

> Nope, still doesn't work:
>
> def fact(x):
>         return reduce(operator.mul,xrange(1,x+1),1)
>
> fact() should raise an exception if x is negative.

So, where is the problem? if not allowing negative numbers is so
important for you, add a if statement and raise a ValueError exception.



From paul.hankin at gmail.com  Mon Oct  1 18:24:44 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Mon, 01 Oct 2007 22:24:44 -0000
Subject: Limits on search length
In-Reply-To: <mailman.1354.1191259433.2658.python-list@python.org>
References: <mailman.1354.1191259433.2658.python-list@python.org>
Message-ID: <1191277484.332187.289850@57g2000hsv.googlegroups.com>

On Oct 1, 6:16 pm, Daryl Lee <d... at altaregos.com> wrote:
> I am trying to locate all lines in a suite of files with quoted strings of
> particular lengths.  A search pattern like r'".{15}"' finds 15-character
> strings very nicely.  But I have some very long ones, and a pattern like
> r'".{272}"' fails miserably, even though I know I have at least one
> 272-character string.
>
> In the short term, I can resort to locating the character positions of the
> quotes, but this seemed like such an elegant solution I hate to see it not
> work.  The program is given below (sans imports), in case someone can spot
> something I'm overlooking:
>
> # Example usage: search.py *.txt \".{15}\"
> filePattern = sys.argv[1]
> searchPattern  = sys.argv[2]
> cpat = re.compile(searchPattern)

Most shells will expand *.txt to the list of files that match, so
you'll end up with the first .txt file as your 'filePattern', and the
second as the regexp. Could that be it?

--
Paul Hankin



From mpelzsherman at yahoo.com  Tue Oct 30 09:25:32 2007
From: mpelzsherman at yahoo.com (Michael Pelz Sherman)
Date: Tue, 30 Oct 2007 06:25:32 -0700 (PDT)
Subject: getting serialized data into and out of a database
In-Reply-To: <op.t0zj7egwx6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <198365.9333.qm@web55303.mail.re4.yahoo.com>

THANK YOU! I needed to use tostring() in this case but the key was realizing what kind of data I was dealing with.

Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote: En Mon, 29 Oct 2007 19:07:18 -0300, Michael Pelz Sherman  
 escribi?:

> I'm having a devil of a time getting serialized data into and out of a  
> database (MySQL in this case) using python and MySQLdb.
>
> I have some C code that has its own serialization/deserialization  
> functions, which we've wrapped using SWIG.
>
> I am able to save the serialized C structs to disk but when I try to  
> write the exact same data to MySQL and pull it back out, I'm getting  
> some strange results. The data comes back looking like this:
>
> array('c', '\x01r\x01\x00\x...)
>
> Is this a python buffer, or what? How can I access the data in there?  
> I've tried using [1] but that doesn't seem to work.

It's an array of characters 
You can write it to disk again using its tofile() method

-- 
Gabriel Genellina

-- 
http://mail.python.org/mailman/listinfo/python-list

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071030/82ec3214/attachment.html>

From llothar at web.de  Sun Oct 21 09:09:18 2007
From: llothar at web.de (llothar)
Date: Sun, 21 Oct 2007 06:09:18 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <471afd4c.179297746@news.readfreenews.net>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
Message-ID: <1192972158.250126.203980@v23g2000prn.googlegroups.com>

> I'm, not sure that I'm getting your point, but are you trying to argue that
> _not_ knowing mathemathics makes you a better programmer?

No but it doesn't help you very much either. They are just different
skills.

> Or maybe that learning math is useless to a programmer?

No and at least the mathematical idea of building a universe on a
basic set
of axioms is pretty exciting for a programmer. But it's the idea not
the real
wisdom (I never had to use any serious maths in my 25 years of
programming)
that you need as a programmer

> This must be the most ignorant post I've seen
> this week. The *best* programmers I've seen actually had mathematic education.

Depends. I would call Knuth as one of the worst programmers. Look at
his total
failures on literature programming. Software Engineering is something
very
different. Having a dead - i mean end of development line software
like TeX - and
then trying to base a theory about software engineering (which is
based on changes)
is so absolutely stupid ...





From arkanes at gmail.com  Tue Oct 23 14:59:15 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 23 Oct 2007 13:59:15 -0500
Subject: Cross-platform GUI development
In-Reply-To: <1193164449.831675.200600@i38g2000prf.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<mailman.158.1192250064.927.python-list@python.org>
	<1193164449.831675.200600@i38g2000prf.googlegroups.com>
Message-ID: <4866bea60710231159h5a22b04cuf20dcb48a498dce5@mail.gmail.com>

On 10/23/07, maco <macoafi at gmail.com> wrote:
> On Oct 13, 12:34 am, Michael L Torrie <torr... at chem.byu.edu> wrote:
> > Alexandre Badez wrote:
> > > Personnaly, I use PyQt simply because I prefere Qt to Gtk, witch is
> > > much more integrated with all desktop than Gtk.
> > > In fact, your application in Qt on Mac, Win or Linux look like a
> > > native app.
> >
> > Qt doesn't look very native on my desktop.  In fact, Qt apps have always
> > looked out of place on a Gnome desktop.
> >
> > On Windows and Mac, no question, they look pretty native.  You do have
> > to take pains to make the app "feel" native, though.  Like follow the UI
> > guidelines of the platform,  etc.
> >
> >
> >
> > > Just a question of "feeling" I think; because most of those GUI
> > > framework, offer quiet the same functionality.
>
> GTK (like Pidgin or the GIMP) looks pretty native on Windows to me.

This can only be because you don't use these programs often, or you've
never actually looked at them. The GIMP in particular has almost
nothing in common with the native controls - it's got a different
background color, a different drawing model (note nasty delayed
repaints when resizing), clearly non-native dialogs like file pickers,
non-standard menu icons, just a huge list.

Pidgin has a fairly minimal interface so it's flaws are less obvious,
but they're still there.

If this doesn't bother you, more power to you, but don't make the
mistake of thinking that GIMP is any way "native" on windows.

> Years of using Windows is probably why I think GTK/GNOME looks better
> than Qt/KDE.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From ashish.jha at gmail.com  Wed Oct 10 06:11:04 2007
From: ashish.jha at gmail.com (ashish)
Date: Wed, 10 Oct 2007 03:11:04 -0700
Subject: Python service gets interrupted function call
Message-ID: <1192011064.813082.221520@50g2000hsm.googlegroups.com>

Hi All,
I wanted to know how to handle events like 'logoff' in the main thread
so that any process which is being run by svcDoRun method of service
does not get 'interrupted function call' exception.

I am posting a very simple service program , and i want to know that
is there a way to handle such interrupts without explicitly calling
try except block over blocking calls.

Here is the example which is getting interrupted exception at logoff.
=======================================================
import os, time, sys
import win32serviceutil, win32service
import pywintypes, win32con, winerror
# Use "import *" to keep this looking as much as a "normal" service
# as possible.  Real code shouldn't do this.
from win32event import *
from win32file import *
from win32pipe import *
from win32api import *
from ntsecuritycon import *

import servicemanager

import traceback
import thread, time

class TrialService(win32serviceutil.ServiceFramework):
    _svc_name_ = "TrialService"
    _svc_display_name_ = "TrialService"
    _svc_description_ = "TrialService"
    _exe_name_ = "C:/Python24/Lib/site-packages/win32/
pythonservice.exe"

    def __init__(self, args):
        win32serviceutil.ServiceFramework.__init__(self, args)
        self.hWaitStop = CreateEvent(None, 0, 0, None)
        self.overlapped = pywintypes.OVERLAPPED()
        self.overlapped.hEvent = CreateEvent(None,0,0,None)

    def SvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        SetEvent(self.hWaitStop)

    def SvcDoRun(self):
        time.sleep(1000)

def ctrl_handler(ctrl_type):
    return True

if __name__ =='__main__':
    SetConsoleCtrlHandler(ctrl_handler, True)
    win32serviceutil.HandleCommandLine(TrialService)

========================================================

In actual call i just want to call my app in place of time.sleep but
my app will have blocking code segments.
Any help will be greatly appreciated .
Thanks
Ashish



From python.list at tim.thechases.com  Thu Oct  4 16:05:25 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 04 Oct 2007 15:05:25 -0500
Subject: RegEx question
In-Reply-To: <50af02ed0710041248i15823f88gd6b404353ba7d472@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>	<1191515675.19400.39.camel@skinner.madoff.com>	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
	<50af02ed0710041248i15823f88gd6b404353ba7d472@mail.gmail.com>
Message-ID: <47054785.5020705@tim.thechases.com>

>>> try @param\[(in|out)\] \w+
>>>
>> This didn't work either :(
>>
>> The tool using this regular expression (Comment Reflower for VS2005) May be
>> broken...
> 
> How about @param\[[i|o][n|u]t*\]\w+ ?

...if you want to accept patterns like

   @param[iutttttt]xxxxxxx

...

The regexp at the top (Adam's original reply) would be the valid 
regexp in python and matches all the tests thrown at it, assuming 
it's placed in a raw string:

   r = re.compile(r"@param\[(in|out)\] \w+")

If it's not a python regexp, this isn't really the list for the 
question, is it? ;)

However, things to try:

- sometimes the grouping parens need to be escaped with "\"

- sometimes "\w" isn't a valid character class, so use the 
long-hand variant of something like "[a-zA-Z0-9_]]

- sometimes the "+" is escaped with a "\"

- if you don't use raw strings, you'll need to escape your "\" 
characters, making each instance "\\"

HTH,

-tkc




From sbellon at sbellon.de  Mon Oct 22 10:54:59 2007
From: sbellon at sbellon.de (Stefan Bellon)
Date: Mon, 22 Oct 2007 16:54:59 +0200
Subject: Building sparc64 32/64-bit Python
Message-ID: <20071022165459.476c7a07@cube.tz.axivion.com>

Hi,

I'm trying to build a Sun Solaris Version of Python from the source so
that both, 32-bit and 64-bit libraries are present.

I can successfully build a 32-bit version in one directory and a 64-bit
version in another directory. What I'd like to do is to build a version
that has the 64-bit library in a sparcv9 directory but shares the other
Python libraries that are ELF-code independent.

Is this possible or do I really have to install two complete but
separate Pythons although most of the files are the same?

-- 
Stefan Bellon


From martin at v.loewis.de  Tue Oct 23 17:37:15 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 23 Oct 2007 23:37:15 +0200
Subject: Root element name not declared
In-Reply-To: <1193164157.943495.226850@z24g2000prh.googlegroups.com>
References: <1193164157.943495.226850@z24g2000prh.googlegroups.com>
Message-ID: <471e698b$0$4996$9b622d9e@news.freenet.de>

> <?xml version="1.0"?>
> <!DOCTYPE MyMessage SYSTEM "mymessage.dtd">
> <MyMessage release="2.0">
>
[...]
> <!ENTITY % MyMessage                  "">
> ,,,,,
[...]
> Being both the file and the dtd provided by the supplier, I believe
> they're correct so I don't understand what's wrong. MyMessage IS
> declared... isn't it sufficient?

No. MyMessage is declared above as a Parameter Entity (PE), not
as an element. Look for definitions that start with <!ELEMENT.
Also, look for for occurrences of IGNORE around any such definition.

If you see MyMessage used, try to find out what it's "normal"
definition is; the definition you gave is IGNOREd unless
UsingLocalNames is defined to INCLUDE (which I assume it is not).
For example, if there was the fragment

<!ENTITY % MyMessage "Envelope">

<!ELEMENT %MyMessage; (From|To)>

then the name of the root element would not be MyMessage, but
Envelope.

HTH,
Martin


From jstroud at mbi.ucla.edu  Sun Oct 14 01:27:11 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 13 Oct 2007 22:27:11 -0700
Subject: Python on imac
In-Reply-To: <8ocQi.24253$054.21605@newsfe14.phx>
References: <8ocQi.24253$054.21605@newsfe14.phx>
Message-ID: <fes99k$o4$1@daisy.noc.ucla.edu>

John Velman wrote:
> I'm considering moving from Linux to imac.   I've recently returned to
> Python (was never very expert) to develop a small gui application.  At
> present I plan to use PyGTK with Pango and Cairo.
> 
> What surprises may I be in for :-)
> 
> (Currently using slackware 11.0 on an old (8 years) slow (400mhz) machine.)
> 
> Thanks,
> 
> John Velman

For OS X 10.4, wx has come as part of the stock python install. You may 
want to consider going that route if you develop exclusively for OS 
X--it will keep the size of your distribution down.

James

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

http://www.jamesstroud.com


From paul.hankin at gmail.com  Wed Oct 24 10:15:31 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 24 Oct 2007 14:15:31 -0000
Subject: Better writing in python
In-Reply-To: <1193230962.271873.104900@v29g2000prd.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193230962.271873.104900@v29g2000prd.googlegroups.com>
Message-ID: <1193235331.202744.226950@q3g2000prf.googlegroups.com>

On Oct 24, 2:02 pm, kyoso... at gmail.com wrote:
> On Oct 24, 7:09 am, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
>
> > I'm just wondering, if I could write a in a "better" way this code
>
> > lMandatory = []
> > lOptional = []
> > for arg in cls.dArguments:
> >   if arg is True:
> >     lMandatory.append(arg)
> >   else:
> >     lOptional.append(arg)
> > return (lMandatory, lOptional)
>
> > I think there is a better way, but I can't see how...
>
> You might look into list comprehensions. You could probably do this
> with two of them:
>
> <code>
> # completely untested
> lMandatory = [arg for arg in cls.dArguments if arg is True]
> lOptional  = [arg for arg in cls.dArguments if arg is False]
> </code>
>
> Something like that. I'm not the best with list comprehensions, so I
> may have the syntax just slightly off.

Your list comprehensions are right, but 'arg is True' and 'arg is
False' are better written as 'arg' and 'not arg' respectively.

--
Paul Hankin



From sakradevanamindra at gmail.com  Sun Oct 14 23:47:49 2007
From: sakradevanamindra at gmail.com (Shoryuken)
Date: Sun, 14 Oct 2007 20:47:49 -0700
Subject: use lines as argument to a command
Message-ID: <1192420069.166779.55230@y27g2000pre.googlegroups.com>

I'm new to Python, so my question may sounds naive. Here is it.

I have a text file like this:

www.a.com
www.b.com
www.c.com
...

I want to read one line from this file at a time, which I know how to
do. And use it as an argument to a command, for example, telnet www.a.com
and so on. However I have no idea how to do this task.

My purpose is to generate a brief report.

Thank you in advance.



From j.d.walker at comcast.net  Tue Oct 23 03:17:23 2007
From: j.d.walker at comcast.net (j.d.walker)
Date: Tue, 23 Oct 2007 07:17:23 -0000
Subject: The finger of suspicion
In-Reply-To: <1193115090.251163.132230@v23g2000prn.googlegroups.com>
References: <1193115090.251163.132230@v23g2000prn.googlegroups.com>
Message-ID: <1193123843.782723.174370@k35g2000prh.googlegroups.com>

On Oct 22, 9:51 pm, therm... at india.com wrote:
> The time of fall
> The fake anthrax letters
> The absence of pentagon video, the most highly defended building
> The thermate residue
> The molten metal pools
> The pyroclastic flow of dust
> The shattering of the whole building into dust and small pieces
> The spherical particles of molten iron with sulfur, potassium and
> permanganate elements
>
> The finger of suspicion, nay certainty points to only the yank and the
> anglo-saxon bastards
>
> And all that to steal the oil.
>
> Bin Laden and Adam Gadahn productions are make in the Langley HQ of
> CIA.
>
> Al-Qaida does not exist.
>
> The goal is to prevent democratic order in the oil rich arab countries.




From mail at microcorp.co.za  Fri Oct  5 02:23:45 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 5 Oct 2007 08:23:45 +0200
Subject: Program with wx in Linux and Windows
References: <fe2ii3$4ac$1@aioe.org>
Message-ID: <015801c80722$0937e640$03000080@hendrik>

"marcpp" <ma...mail.com> wrote:


> Hi I've developed a program (WXpython GUI). In Linux the GUI is correct 
> (various distributions), but in Windows all appears disordered.
> Any recomendations?

You are not going to like this recommendation.

Use Tkinter instead - seems to work nicely cross platform for me.

- Hendrik



From piet at cs.uu.nl  Thu Oct  4 17:21:35 2007
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Thu, 04 Oct 2007 23:21:35 +0200
Subject: Owner of spawned process in threads
References: <mailman.1528.1191526067.2658.python-list@python.org>
Message-ID: <m2tzp6y3s0.fsf@cs.uu.nl>

>>>>> "Vishal Sethia" <sethia.vishal at gmail.com> (VS) wrote:

>VS> Just trying to understand the behaviour of spawn. Consider I have a
>VS> function which creates two threads. And in one of the threads I make a
>VS> call to pexpect.spawn. spawn would fork and create a new new child In
>VS> this case who becomes the owner of this child process.

>VS> Is it the thread that spawned becomes the owner or is the main program
>VS> becomes the owner of that child process.

Owner (parent) is the process, not a thread.
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org


From Roland.Puntaier at br-automation.com  Thu Oct 25 05:51:36 2007
From: Roland.Puntaier at br-automation.com (Roland Puntaier)
Date: Thu, 25 Oct 2007 11:51:36 +0200
Subject: New to Vim and Vim-Python
In-Reply-To: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
Message-ID: <OF3F0577E1.C9BB0983-ONC125737F.0032F900-C125737F.003629CF@br-automation.com>

> I am new to using Vim's scripts.
> 
> I was wondering if anyone uses Vim-Python and how to use it?   This
> includes things like key bindings and such.

I have keys mapped
- to execute the current line and return its result (F2)
- to execute the visual selection within a line and return its result (F4)
- to execute the current visual selection over more lines (F3)
- to open a window named pyout where the results are written (F5), else 
they are on the bottom line

This way I can quickly check whether the python lines I wrote are OK 
without leaving the full-fledged editor.

Anyway, I would like to know which other editors or free python IDEs have 
the same possibility. 
There surely are. Can anybody name one/some? Thanks.


 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: _vimrc.zip
Type: application/zip
Size: 2455 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/077fab5b/attachment.zip>

From larry.bates at websafe.com  Wed Oct 10 17:03:07 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 10 Oct 2007 16:03:07 -0500
Subject: if then elif
In-Reply-To: <mailman.42.1192048768.927.python-list@python.org>
References: <mailman.42.1192048768.927.python-list@python.org>
Message-ID: <Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>

Shawn Minisall wrote:
> I just learned about if, then elif statements and wrote this program.  
> The problem is, it's displaying all of the possibilities even after you 
> enter a 0, or if the fat grams are more then the total number of 
> calories , that is supposed to stop the program instead of continuing on 
> with the print statements that don't apply.  Any idea's?  thanks
> 
>    #Prompt for calories
>    cal = input("Please enter the number of calories in your food: ")
> 
>    #Prompt for fat
>    fat = input("Please enter the number of fat grams in your food: ")
> 
>    #Input validation
>    if cal or fat <= 0:
>       #Display message
>        print "Error.  The number of calories and/or fat grams must be 
> positive"
>        print
> 
>    else:
>    #Calculate calories from fat
>        calfat = float(fat) * 9
>          #Calculate number of calories from fat
>        caldel = calfat / cal
> 
>    #change calcent decimal to percentage
>        calcent = caldel * 100
> 
>    if calfat > cal:
>        print "The calories or fat grams were incorrectly entered."
> 
>    else:
>    #evaluate input
>        if caldel <= .3:
>            print "Your food is low in fat."
>        elif caldel >= .3:
>            print "Your food is high in fat."
> 
>    #Display percentage of calories from fat
>        print "The percentage of calories from fat in your food is %", 
> calcent
> 
> Here's an example of the output...
> 
> Please enter the number of calories in your food: 50
> Please enter the number of fat grams in your food: 30
> Error.  The number of calories and/or fat grams must be positive
> 
> Your food is low in fat.
> The percentage of calories from fat in your food is % 0.0
> 
> It was supposed to print The calories or fat grams were incorrectly 
> entered since the calories from fat was greater then the total number of 
> calories.

Boolean problem:


if cal or fat <= 0

That may be the way you say it or "think" it but it won't work.

'cal or fat' is evaluated first.  Since they both have values this ALWAYS 
evaluates to 1 which is NEVER less than or equal to 0.

You are looking for

if (cal <= 0) or (fat <=0):

(Note: Parenthesis not required, but it may help you understand precedence of 
evaluation.  Also read here:

http://www.ibiblio.org/g2swap/byteofpython/read/operator-precedence.html

-Larry



From devraj at gmail.com  Tue Oct 16 23:52:38 2007
From: devraj at gmail.com (Devraj)
Date: Wed, 17 Oct 2007 03:52:38 -0000
Subject: urlgrabber cookie handling?
Message-ID: <1192593158.188757.129010@i38g2000prf.googlegroups.com>

Hi everyone,

I have been battling to make my code work with a HTTPS proxy, current
my code uses urllib2 to to most things and works well, except that
urllib2 doesn't handle HTTPS proxies.

Urlgrabber (http://linux.duke.edu/projects/urlgrabber/help/
urlgrabber.grabber.html) looks very promising except that I can find a
way to handle cookies in urlgrabber. Is there a way urlgrabber can use
a HTTPCookieProcess or cookielib.CookieJar object to handle cookies?

Thanks for sparing your time. Thanks.

--
Code referenced in this email is available at http://code.google.com/p/gdatacopier



From marcsgbrevkonto at gmail.com  Sun Oct  7 11:59:11 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 15:59:11 -0000
Subject: Newbie packages Q
In-Reply-To: <4708fff0$0$4523$9b4e6d93@newsspool3.arcor-online.net>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<4708fff0$0$4523$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1191772751.926241.81230@k79g2000hse.googlegroups.com>

On Oct 7, 5:49 pm, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> MarkyMarc wrote:
> >  *******************************
> > atest.py:
>
> > def printA():
> >         print "This is Atest from Apack"
> > *******************************
> > btest.py:
> > from Test.apack import atest
>
> > def printB():
> >         print "This is Btest from Bpack"
>
> > def printatest():
> >         print atest.printA()
>
> > print printB()
> > print printatest()
> > *******************************
>
> > Now only one of them imports the other, and this most be the simplest
> > way of illustrating the intra-package references.
> > But how do I get this to work?
>
> This doesn't work? What error do you get?
> I've never done too complicated packaging stuff, and can't raelly
> testdrive your example right now. Maybe you have to look into sys.path
> if Test can be found at all. Or maybe you have to play with the import
> statement (from apack import atest?). I'm just guessing here; importing
> continues to remain going on being a mystery to me.
>
> /W

I get "no module name Test.apack."
But if I print the sys.path just before importing the Test.apack, I
have this:
/python/Test/bpack
So "Test" is in my path. But it seems like it will not look up the
path but only down. And there by do not read the __init__.py files.
But I might be wrong.

Anyone that can explain me how this import and packaging in python
works??



From cokofreedom at gmail.com  Fri Oct 19 04:01:52 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Fri, 19 Oct 2007 08:01:52 -0000
Subject: Noob questions about Python
In-Reply-To: <1192751078.506979.170580@z24g2000prh.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192687508.636842.49940@z24g2000prh.googlegroups.com>
	<1192751078.506979.170580@z24g2000prh.googlegroups.com>
Message-ID: <1192780912.381140.101880@e34g2000pro.googlegroups.com>

On Oct 19, 1:44 am, MRAB <goo... at mrabarnett.plus.com> wrote:
> On Oct 18, 7:05 am, Michele Simionato <michele.simion... at gmail.com>
> wrote:> On Oct 17, 5:58 pm, Ixiaus <parnel... at comcast.net> wrote:
>
> > > def bin2dec(val):
> > >     li = list(val)
> > >     li.reverse()
> > >     res = [int(li[x])*2**x for x in range(len(li))]
> > >     print sum(res)
>
> > > It basically does the same thing int(string, 2) does.
>
> > > Thank you for the responses!
>
> > BTW, here is the reverse function dec2bin, so that you can
> > bang your head on it for a while ;)
>
> It returns '' when number == 0, so you need to test for that case:
>
> > def baseN(number, N=2):
> >     """
> >     >>> baseN(9, 2)
> >     '1001'
> >     """
> >     assert 2 <= N <= 10
> >     assert isinstance(number, int) and number >= 0
>
>     if number == 0:
>         return "0"
>

Hey,

Isn't
if not number:
  return "0"

faster?



From DustanGroups at gmail.com  Mon Oct 22 06:59:01 2007
From: DustanGroups at gmail.com (Dustan)
Date: Mon, 22 Oct 2007 10:59:01 -0000
Subject: dynamic invoke
In-Reply-To: <1192793679.102637.274620@e9g2000prf.googlegroups.com>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<1192793679.102637.274620@e9g2000prf.googlegroups.com>
Message-ID: <1193050741.142411.159560@t8g2000prg.googlegroups.com>

On Oct 19, 6:34 am, Nils <nils.last... at gmail.com> wrote:
>  Use apply(): http://docs.python.org/lib/non-essential-built-in-funcs.html

Did you actually read the title of the page you linked to ("Non-
essential Built-in Functions")?



From copkat at vidotron.cr  Fri Oct 19 16:38:08 2007
From: copkat at vidotron.cr (mich)
Date: Fri, 19 Oct 2007 16:38:08 -0400
Subject: DIAGNOSIS: Racism moves back to Denmark from South Africa
References: <1192661865.485820.253030@v29g2000prd.googlegroups.com>
Message-ID: <LA8Si.12763$412.6551@weber.videotron.net>


<thermate at india.com> wrote in message 
news:1192661865.485820.253030 at v29g2000prd.googlegroups.com...
>
> INCISIVE ANALYSIS: The dismantlement of Apartheid Regime in South
> Africa sent the racist Dutch Afrikaners back to Denmark where they are
> spreading their racist ideology -- The Apartheid "Christianity" :


The Dutch went back to Denmark? 




From bignose+hates-spam at benfinney.id.au  Mon Oct 29 01:06:45 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 16:06:45 +1100
Subject: PEP 299 and unit testing
References: <871wbehef8.fsf@benfinney.id.au>
	<9tmdnf3x8fMezLjanZ2dnUVZ_oninZ2d@comcast.com>
	<87k5p6fsxj.fsf@benfinney.id.au>
	<MYOdnbTNNt-l_rjanZ2dnUVZ_uyinZ2d@comcast.com>
Message-ID: <87fxzufr16.fsf@benfinney.id.au>

Steven Bethard <steven.bethard at gmail.com> writes:

> Ben Finney wrote:
> > Thanks! I was unaware of that module. It does seem to nicely
> > address the issue I discussed.
> 
> You might try the runpy module as-is with Python 2.4.  I don't know
> if it works, but it's pure Python so it's worth a try.

Drat. It uses (by explicit design) "the standard import mechanism" to
load the module, which means it doesn't work for exactly the thing I'm
trying to do: load a program file *not* named with a '.py' suffix.

I've long been able to load my program modules from no-suffix
filenames (or indeed any non-standard filenames) with this function::

    def make_module_from_file(module_name, file_name):
        """ Make a new module object from the code in specified file """

        from types import ModuleType
        module = ModuleType(module_name)

        module_file = open(file_name, 'r')
        exec module_file in module.__dict__
        sys.modules[module_name] = module

        return module

Unfortunately, it seems that "module is already present with name
'foo' in 'sys.modules'" is insufficient for the Python import
mechanism. The module loader used by 'runpy' still complains that it
can't find the module, which is no surprise because its filename is
not that of a library module.

Perhaps I need to delve into the details of the import mechanism
myself :-(

-- 
 \        "With Lisp or Forth, a master programmer has unlimited power |
  `\     and expressiveness. With Python, even a regular guy can reach |
_o__)                            for the stars."  -- Raymond Hettinger |
Ben Finney


From ironfroggy at gmail.com  Sat Oct  6 13:35:19 2007
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Sat, 6 Oct 2007 13:35:19 -0400
Subject: setuptools on mac
Message-ID: <76fd5acf0710061035r1bc44175i5b1e3f676e1da6a9@mail.gmail.com>

I am trying to install the newest setuptools on my macbook. 2.3 was
installed by default, and 2.4 is installed and is my default version
now. However, when I try to import setuptools, which is required to
_install_ setuptools, I get this error:

macbkpro1:~/Desktop/setuptools-0.6c7 ironfroggy$ python setup.py install
Traceback (most recent call last):
  File "setup.py", line 7, in ?
    execfile(convert_path('setuptools/command/__init__.py'), d)
  File "setuptools/command/__init__.py", line 13, in ?
    from distutils.command.bdist import bdist
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/distutils/command/bdist.py",
line 29, in ?
    class bdist (Command):
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/distutils/command/bdist.py",
line 33, in bdist
    user_options = [('bdist-base=', 'b',
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/distutils/util.py",
line 78, in get_platform
    cfgvars = get_config_vars()
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/distutils/sysconfig.py",
line 488, in get_config_vars
    func()
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/distutils/sysconfig.py",
line 373, in _init_posix
    raise DistutilsPlatformError(my_msg)
distutils.errors.DistutilsPlatformError: $MACOSX_DEPLOYMENT_TARGET
mismatch: now "10.4" but "10.3" during configure
macbkpro1:~/Desktop/setuptools-0.6c7 ironfroggy$

-- 
Read my blog! I depend on your acceptance of my opinion! I am interesting!
http://ironfroggy-code.blogspot.com/


From chris.lyon at spritenote.co.uk  Tue Oct 30 16:22:41 2007
From: chris.lyon at spritenote.co.uk (wyleu)
Date: Tue, 30 Oct 2007 13:22:41 -0700
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
Message-ID: <1193775761.764547.148730@i38g2000prf.googlegroups.com>

 I'm running on  Mandriva 2007 (2.6.17-5mdv) and thus have python2.4.3
installed by default,
I'm running code requiring yield(), so need python2.5 and have
installed this sucessfully, and linked appropriately to allow me to
start python2.5 by typing python2.5. However I'd like to use idle so
require to be able to import _tkinter.
I gather I need to modift the setup.py script in my python directory
but am wary of experimenting since I've had problems with damaging the
default tkinter installation before.


import Tkinter
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.5/lib-tk/Tkinter.py", line 38, in
<module>
    import _tkinter # If this fails your Python may not be configured
for Tk
ImportError: No module named _tkinter


Should I need to download a later version of tkinter and/or should I
alter setup.py in my python install directory and then remake?
If the former how do I ensure I don't overwrite the original tkinter
install thus damaging the many mandriva utilities that rely on
python2.4.3 and if the later what should I be looking for within the
python2.5 installation to point to and what alterations within
setup.py are required?



From allen.fowler at yahoo.com  Tue Oct 16 00:14:12 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: 15 Oct 2007 21:14:12 -0700
Subject: Simple HTML template engine?
In-Reply-To: <mailman.14.1192437519.13605.python-list@python.org>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<mailman.14.1192437519.13605.python-list@python.org>
Message-ID: <1192492962.413427.212540@q5g2000prf.googlegroups.com>

CherryPy looks nice... though I am just looking to generate static
reports.

Thanks anyway... I'll keep it in mind for the future.

On Oct 15, 4:38 am, "Ciprian Dorin Craciun"
<ciprian.crac... at gmail.com> wrote:
>     Have you tried CherryPy?http://www.cherrypy.org/
>
>     It's not a template engine, but a simple web server engine, and
> you could code your conditionals and loops directly in Python... When
> I have tried it, it looked very nice and easy.
>
>     Ciprian.



From 353851029352 at mms.mymeteor.ie  Sun Oct 14 08:13:09 2007
From: 353851029352 at mms.mymeteor.ie (353851029352 at mms.mymeteor.ie)
Date: Sun, 14 Oct 2007 12:13:09 GMT
Subject: No subject
Message-ID: <ADZ81BguF-dGho2Nc@resil1be1>

A non-text attachment was scrubbed...
Name: 01smil
Type: application/smil
Size: 129 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071014/98987375/attachment.bin>

From welcomestocontact at gmail.com  Thu Oct  4 03:40:48 2007
From: welcomestocontact at gmail.com (welcomestocontact at gmail.com)
Date: Thu, 04 Oct 2007 00:40:48 -0700
Subject: Web service client using https
Message-ID: <1191483648.610569.219510@g4g2000hsf.googlegroups.com>

Hi All,

       I am trying to connect .NET web service using HTTPS. I wrote a
python script using https. For that need to send SOAP message to the
server. But it is giving error 401.3 execution access is denied.(SOAP
message not processing)
               I have a doubt can we access web services using HTTPS
only, or need to have any other.
          I am sending the code::
     [CODE]
import httplib
a=open('/root/Desktop/b.xml','r')

#SOAP message
Message=a.read()
h =httplib.HTTPS('hpc.msftlabs.com')
h.putrequest('PUT','/HPCBasicProfile/HPCBasicProfile.svc')
h.putheader('Accept','text/soap')
h.putheader('Content-type','text/jsl; charset="utf-8"')
h.putheader('Content-length','%s' % str(len(Message)))
h.putheader('SOAPAction','http://schemas.ggf.org/bes/2006/08/
besfactory/BESFactoryPortType/CreateActivity')
.endheaders()

h.send(Message)

errcode,errmsg, headers = h.getreply()
print errcode,errmsg, headers
f = h.getfile() # Get file object for reading data
data = f.read()
print data
f.close()
[/CODE]

Please guid me to access web service.

Thanks
Allavarapu



From grante at visi.com  Tue Oct 16 15:57:18 2007
From: grante at visi.com (Grant Edwards)
Date: Tue, 16 Oct 2007 19:57:18 -0000
Subject: best way of dealing with currency?
References: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>
Message-ID: <13ha5suo9550je0@corp.supernews.com>

Just send the currency to me.  I'll deal with it.

-- 
Grant Edwards                   grante             Yow! I'm into SOFTWARE!
                                  at               
                               visi.com            


From nytrokiss at gmail.com  Tue Oct  2 02:25:16 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Mon, 1 Oct 2007 23:25:16 -0700
Subject: slice last 4 items from a list
In-Reply-To: <1191286234.855980.118170@g4g2000hsf.googlegroups.com>
References: <fdrl81$13c$1@solaris.cc.vt.edu>
	<1191286234.855980.118170@g4g2000hsf.googlegroups.com>
Message-ID: <8a6b8e350710012325p467f9ddfu2d65503a0c7d4db2@mail.gmail.com>

Very pythoninc!

On 10/1/07, John Machin <sjmachin at lexicon.net> wrote:
>
> On Oct 2, 6:27 am, brad <byte8b... at gmail.com> wrote:
> > Is this the correct way to slice the last 4 items from a list?
> >
> > x = [1,2,3,4,5,6,7,8,9]
> > print x[-4:]
> >
> > It works, but is it Pythonic?
>
> It's Pythonic. It's also unambiguous, unlike your specification, which
> could be interpreted as 'chop off the last 4 items from a list' i.e.
> del x[-4:]. What you are actually doing is 'print the last 4 items of
> a list'.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
http://search.goldwatches.com/search.aspx?Search=cufflinks
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071001/53947628/attachment.html>

From jjl at pobox.com  Sat Oct 13 14:45:16 2007
From: jjl at pobox.com (John J. Lee)
Date: Sat, 13 Oct 2007 18:45:16 GMT
Subject: urllib.ProxyHandler HTTPS issues
References: <1192078997.453819.323390@22g2000hsm.googlegroups.com>
	<87641d8pzb.fsf@pobox.com>
	<1192141278.464551.182390@e9g2000prf.googlegroups.com>
Message-ID: <873awedfb7.fsf@pobox.com>

Devraj <devraj at gmail.com> writes:

> Thanks John. Will investigate sending the CONNECT command to handle
> proxies.
>
> Do you recommend doing this for HTTP proxies as well

No.


> or should I just use the ProxyHandler for HTTP proxies?

Yes.


John


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 22:52:59 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 02:52:59 -0000
Subject: if then elif
References: <mailman.42.1192048768.927.python-list@python.org>
	<Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>
	<1192055029.856930.19230@r29g2000hsg.googlegroups.com>
	<mailman.62.1192070555.927.python-list@python.org>
Message-ID: <13gr40bbqmhd430@corp.supernews.com>

On Wed, 10 Oct 2007 20:42:26 -0600, Michael L Torrie wrote:

> chris.monsanto at gmail.com wrote:
> 
> 
>> that's the most incorrect thing i've heard all day!
>> 
>> if cal or fat <= 0 is parsed as if (cal) or (fat <= 0)
> 
> Which is exactly what he said.

Heh, that was my first thought too, for about 3.2 milliseconds. And then 
I realised that, no, he actually said: 

'cal or fat' is evaluated first

that is, it was parsed like 

if (cal or fat) <= 0

which is not correct.


-- 
Steven.


From michael at jedimindworks.com  Tue Oct  2 17:22:44 2007
From: michael at jedimindworks.com (Michael Bentley)
Date: Tue, 2 Oct 2007 14:22:44 -0700
Subject: List Question
In-Reply-To: <fdubt1$gp$1@solaris.cc.vt.edu>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
Message-ID: <DD0FC9B4-88F4-47DC-9C2A-CE56BDB2D791@jedimindworks.com>


On Oct 2, 2007, at 2:06 PM, brad wrote:

> How is this expressed in Python?
>
> If x is in y more than three times:
>      print x
>
> y is a Python list.

# Try using help -- help(list) or help(list.count) for instance...
if y.count(x) > 3:
     print x



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 11 06:15:16 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 11 Oct 2007 12:15:16 +0200
Subject: multimethods decorator
In-Reply-To: <mailman.58.1192065079.927.python-list@python.org>
References: <mailman.30.1192028986.927.python-list@python.org>	<470d0914$0$24295$426a74cc@news.free.fr>
	<mailman.58.1192065079.927.python-list@python.org>
Message-ID: <470df778$0$11653$426a74cc@news.free.fr>

gherzig at fmed.uba.ar a ?crit :
>> Gerardo Herzig a ?crit :
>>> Hi all. Im reading the Gido's aproach using decorators at
>>> http://www.artima.com/weblogs/viewpost.jsp?thread=101605
>>>
>>> It looks good to me, but the examples shows the functionality using
>>> functions.
>>> Now, when i try to give this decorator into a method, if i try the
>>>
>>> class test(object):
>>>    @multimethod(...)
>>>    def met(self, ...):
>>>
>>> The multimethod decorator needs the types of the arguments, and, if the
>>> met method requires self as the first argument, the multimethod should
>>> look like
>>> @multimethod(self.__class__, bla, ble) or some like that...
>>>
>>> Now i know that im wrong, because i have this error
>>>  >@multimethod(self.__class__)
>>>  >NameError: name 'self' is not defined
>> Indeed. Neither self (which will only be known at method call time) nor
>> even the 'test' class (which is not yet defined when the decorator is
>> executed) are availables.

> Doh!

If you're surprised, then you'd better learn way more about Python's 
internal (execution model && object model mostly) before continuing with 
multimethods.

>>> So what would be the first argument to @multimethod??
>> A string ?-)

> Ah? And what will that string contains?

What makes sens for you. Don't forget that Python has very strong 
introspection features. Also note that it's not uncommon to use a 2-pass 
approach : marking some methods with the decorator, then doing the real 
processing in the metaclass (which of course implies a custom metaclass) 
or in the __new__ method (in which case this processing will happen on 
*each* instanciation).

>> FWIW, there's already an implementation of multiple dispacth by Mr. Eby...
> Oh yes, i found the dispatch version of multimethods, but i have not tried
> it yet. Do you think is better this version than Guido's?

I think that dispatch is actually used in a few packages, frameworks or 
applications. Is it the case of Guido's stuff ?

Also, IIRC, Guido's snippet is quite less generic than dispatch (which 
is based on expression rules, not only on types).

My 2 cents...


From WilliamKF at gmail.com  Fri Oct 26 12:27:32 2007
From: WilliamKF at gmail.com (WilliamKF at gmail.com)
Date: Fri, 26 Oct 2007 16:27:32 -0000
Subject: Interpreter hook during evaluation
Message-ID: <1193416052.060300.254560@d55g2000hsg.googlegroups.com>

Hello,

I would like access to a hook inside Python that would allow me to
register a C++ function to be called periodically during the
evaluation of a Python script.

Does any such thing exist today in Python? I poked around but didn't
find anything.

I want to do this for interrupt handling. I'd like to be able to
interrupt long running Python commands. I have a hook which would
throw a C++ exception if an interrupt is detected. I would then catch
this at the place where my application which embeds Python invokes a
Python command. My hook is written to be very fast, so calling it
every Python instruction would not be that bad in terms of
performance.

I'd like to avoid changing the existing Python implementation, which
is why I'm looking for a hook. Otherwise, a user would not be able to
substitute in their own Python implementation if they so desire
instead of taking the default on our app uses.

Thanks for the ideas.

-William



From DustanGroups at gmail.com  Wed Oct 10 06:34:01 2007
From: DustanGroups at gmail.com (Dustan)
Date: Wed, 10 Oct 2007 10:34:01 -0000
Subject: Last value of yield statement
In-Reply-To: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
References: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
Message-ID: <1192012441.818783.149110@k79g2000hse.googlegroups.com>

On Oct 10, 5:19 am, Shriphani <shripha... at gmail.com> wrote:
> Hello all,
>
> Let us say I have a function like this:
>
> def efficientFiller(file):

Note that you are shadowing the built-in variable 'file' here. Better
use 'filename', or something to that effect.

>         worthless_list = []
>         pot_file = open(file,'r')
>         pot_file_text = pot_file.readlines()
>         for line in pot_file_text:
>                 if line.find("msgid") != -1:
>                         message_id = shlex.split(line)[1]
>                         if message_id in dictionary:
>                                 number = pot_file_text.index(line)
>                                 corresponding_crap =
> dictionary.get(message_id)
>                                 final_string = 'msgstr' + " " + '"' +
> corresponding_crap + '"' + '\n'
>                                 pot_file_text[number+1] = final_string
>                                 yield pot_file_text
>
> efficient_filler =  efficientFiller("libexo-0.3.pot")
> new_list = list(efficient_filler)
> print new_list
>
> I want to plainly get the last value the yield statement generates.
> How can I go about doing this please?
>
> Regards,
> Shriphani Palakodety

efficient_filler =  efficientFiller("libexo-0.3.pot")
new_list = list(efficient_filler)
last_value = new_list[-1]
print last_value

# OR

efficient_filler =  efficientFiller("libexo-0.3.pot")
for last_value in efficient_filler: pass
print last_value


The latter assumes that the last value is the only value you want.



From cjames at callone.net  Tue Oct 30 08:28:33 2007
From: cjames at callone.net (c james)
Date: Tue, 30 Oct 2007 07:28:33 -0500
Subject: appending into a list
In-Reply-To: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
References: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
Message-ID: <fg781i$auc$1@ger.gmane.org>

Beema shafreen wrote:
>   2721520      2721569    A_16_P21360235    199    -49
>   2721768      2721821    A_16_P03641971    139    -53
>   2721960      2722004    A_16_P21360237    312    -44
> I need to append the column D and E into a list:
>                             in such a way that the list should have 
> [D,E,D,E,D,E........]
> How do i do it.
> 
> regards
> shafreen

Without a header, you could use something like

data = [x.split()[-2:] for x in open(filename).readlines()]

With header

f = open(filename)
f.readline()
data = [x.split()[-2:] for x in f.readlines()]
	



From bignose+hates-spam at benfinney.id.au  Wed Oct 17 21:50:14 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 18 Oct 2007 11:50:14 +1000
Subject: Pull Last 3 Months
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
	<1192665202.277171.132880@t8g2000prg.googlegroups.com>
	<87zlyhz2fd.fsf@benfinney.id.au> <4716b996@news.eftel.com.au>
Message-ID: <87ve95yyw9.fsf@benfinney.id.au>

John Machin <sjmachin at lexicon.net> writes:

> It's a bit hard to see how anybody could imagine that in the expression
>     [months[(month - i - 1) % 12] for i in range(n)]
> the number 12 referred to anything but the number of months in a year.

Exactly, that's what people *will* assume. But what if they're wrong,
and you're using the number 12 for some other semantic purpose? If the
programmer has encountered this type of betrayed assumption before,
they'll never be entirely sure that a bare '12' in the code means what
they think it means. And the code doesn't say anything about why the
number was used, so they're left to guess.

Of course, in such a trivial example, it is almost unthinkable that
the number 12 would mean anything else; but the entire point of the
principle of not using magic numbers is that you don't have to wonder
about when that line is crossed.

Better to be explicit about it, in every case, IMO.

-- 
 \         "Money is always to be found when men are to be sent to the |
  `\   frontiers to be destroyed: when the object is to preserve them, |
_o__)  it is no longer so."  -- Voltaire, _Dictionnaire Philosophique_ |
Ben Finney


From namesagame-usenet at yahoo.com  Tue Oct 16 16:56:42 2007
From: namesagame-usenet at yahoo.com (gamename)
Date: Tue, 16 Oct 2007 20:56:42 -0000
Subject: ctypes & Wrapping Complex Datatypes
Message-ID: <1192568202.660884.165770@e34g2000pro.googlegroups.com>

Hi,

I've just started using ctypes and so far, its great.  But I'm running
to some problems with complex datatypes.  I'm not sure how to wrap
something like this:

   /* This defines the Handle type in a header file.  I don't think
this needs wrapping, its just to show the handle definition for
context*/
    typedef struct DFFTSHandle_s *DFFTSHANDLE;
...
  /* Then, the handle is used like this later on.  This *is* what I
want to wrap.*/
    status = DFFTSCreateSession(&Handle);
    status = DFFTSSetSessionOption(Handle, DFFTSOPT_ITERATIONS,
&iteration, sizeof(iteration));


Any ideas?

TIA,
-T



From patrick.waldo at gmail.com  Tue Oct 16 08:47:51 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Tue, 16 Oct 2007 12:47:51 -0000
Subject: Simple Text Processing Help
In-Reply-To: <ff1rtk$j6m$03$1@news.t-online.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
	<fevlma$imh$01$2@news.t-online.com>
	<1192482484.987399.112620@k35g2000prh.googlegroups.com>
	<ff1rtk$j6m$03$1@news.t-online.com>
Message-ID: <1192538871.985374.46760@e34g2000pro.googlegroups.com>

And now for something completely different...

I've been reading up a bit about Python and Excel and I quickly told
the program to output to Excel quite easily.  However, what if the
input file were a Word document?  I can't seem to find much
information about parsing Word files.  What could I add to make the
same program work for a Word file?

Again thanks a lot.

And the Excel Add on...

import codecs
import re
from win32com.client import Dispatch

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"
input = codecs.open(path, 'r','utf8')
output = codecs.open(path2, 'w', 'utf8')

NR_RE = re.compile(r'^\d+-\d+-\d+$')           #pattern for EINECS
number

tokens = input.read().split()
def iter_elements(tokens):
    product = []
    for tok in tokens:
        if NR_RE.match(tok) and len(product) >= 4:
            product[2:-1] = [' '.join(product[2:-1])]
            yield product
            product = []
        product.append(tok)
    yield product

xlApp = Dispatch("Excel.Application")
xlApp.Visible = 1
xlApp.Workbooks.Add()
c = 1

for element in iter_elements(tokens):
    xlApp.ActiveSheet.Cells(c,1).Value = element[0]
    xlApp.ActiveSheet.Cells(c,2).Value = element[1]
    xlApp.ActiveSheet.Cells(c,3).Value = element[2]
    xlApp.ActiveSheet.Cells(c,4).Value = element[3]
    c = c + 1

xlApp.ActiveWorkbook.Close(SaveChanges=1)
xlApp.Quit()
xlApp.Visible = 0
del xlApp

input.close()
output.close()



From bearophileHUGS at lycos.com  Sun Oct 28 07:56:47 2007
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: Sun, 28 Oct 2007 04:56:47 -0700
Subject: Need some help...
In-Reply-To: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
References: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
Message-ID: <1193572607.910074.317980@22g2000hsm.googlegroups.com>

> I want to create a program that I type in a word.

You can see that Python has a command to input strings from the
command line.

> chaos
> each letter equals a number....
> A=1
> B=20
>  and so on.
> So Chaos would be
> C=13 H=4 A=1 O=7 S=5
> I want to then have those numbers
> 13+4+1+7+5 added together to be 30.
> How can I do that?

Python has a dictionary data structure called dict(), or {}, that you
can use to map your letters to those numbers. With it you can created
the letter-number association.

Then you can scan the characters of the input string one after the
other, and sum their values into a single total value. Try writing
that code, and then show it to us, we can give more suggestions if you
need them...

Bye,
bearophile



From steven.bethard at gmail.com  Sun Oct 28 23:20:33 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 28 Oct 2007 21:20:33 -0600
Subject: PEP 299 and unit testing
In-Reply-To: <871wbehef8.fsf@benfinney.id.au>
References: <871wbehef8.fsf@benfinney.id.au>
Message-ID: <9tmdnf3x8fMezLjanZ2dnUVZ_oninZ2d@comcast.com>

Ben Finney wrote:
> What it doesn't allow is for the testing of the 'if __name__ ==
> "__main__":' clause itself. No matter how simple we make that, it's
> still functional code that can contain errors, be they obvious or
> subtle; yet it's code that *can't* be touched by the unit test (by
> design, it doesn't execute when the module is imported), leading to
> errors that won't be caught as early or easily as they might.

You could always use runpy.run_module.

STeVe


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 24 08:20:51 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 24 Oct 2007 14:20:51 +0200
Subject: building a linux executable
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
Message-ID: <5o8rl3Flhd8uU1@mid.individual.net>

Prateek wrote:

> I'm trying to package my python program into a linux executable
> using cx_freeze. The goal is that the user should require python
> on their system.
> 
> I've managed to make the binaries on Fedora Core 6 and they run
> fine. However, when I move to Ubuntu (tested on Ubuntu Server 7.04
> and xUbuntu Desktop 7.04), the program fails to run with the
> following error:

I'm sorry I cannot help, but how many linux distros have no python
installed or no packages of it?

Regards,


Bj?rn
 
-- 
BOFH excuse #151:

Some one needed the powerstrip, so they pulled the switch plug.



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Oct 19 11:25:39 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 19 Oct 2007 17:25:39 +0200
Subject: write whitespace/tab to a text file
References: <1192804409.415321.257150@k35g2000prh.googlegroups.com>
Message-ID: <5ns0jjFjut8fU1@mid.individual.net>

dirkheld wrote:

> f=open('/User/home/Documents/programming/python/test.txt','w')
>     for x in range(len(names)):
>         f.write(tags[x])
>     f.close()

Definitely consider the Python tutorial.

Also, please provide working code examples. I don't think yours will
work ;)

names = ['John','Steve','asimov','fred','jim']
f = open('/User/home/Documents/programming/python/test.txt','w')
f.write('\t'.join(names))
f.close()

A better alternative could be the csv module.

Regards,


Bj?rn


-- 
BOFH excuse #388:

Bad user karma.



From steve at holdenweb.com  Thu Oct  4 22:39:31 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 22:39:31 -0400
Subject: PYTHONPATH, opensuse10.2, gtk not working
In-Reply-To: <1191536138.690185.59080@22g2000hsm.googlegroups.com>
References: <1191536138.690185.59080@22g2000hsm.googlegroups.com>
Message-ID: <fe484v$be2$1@sea.gmane.org>

Silfheed wrote:
> Heyas
> 
> So I'm trying to do two things, install a little gnome taskbar applet
> (timer-applet) that was written in python and experiment with writing
> python gtk apps.  I've installed (through yast) gtk, gtk2, gtk2-devel,
> python-gtk, python-gtk-devl, python-gtk-doc but I still cant get
> python to import gtk.  I set PYTHONPATH = /usr/lib/python2.5/site-
> packages/ and that got importing pygtk to work, but the little app I
> downloaded wants to import gtk and I just cant figure out what I'm
> supposed to set PYTHONPATH to in order to get `import gtk` to work.
> Anyone know what I'm doing wrong or missing?
> 
> Thanks
> 
set PYTHONPATH to /usr/lib/python2.5/lib/site-packages:gtk-root-dir

By the way, do you really think that it's necessary to put site-packages 
on the path? You might find it's already on there as Python starts up.

You can tell by printing sys.path from Python.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From george.sakkis at gmail.com  Fri Oct 12 10:22:49 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Fri, 12 Oct 2007 14:22:49 -0000
Subject: decorating container types (Python 2.4)
In-Reply-To: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
References: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
Message-ID: <1192198969.356877.225160@q3g2000prf.googlegroups.com>

On Oct 11, 5:42 pm, timar... at gmail.com wrote:
> Hi,
>
> I have a container class A and I want to add functionality to it by
> using a decorator class B, as follows:
>
> class A(object):
>     def __len__(self):
>         return 5
>
> class B(object):
>     def __init__(self, a):
>         self._a = a
>
>     def __getattr__(self, attr):
>         return getattr(self._a, attr)
>
>     def other_methods(self):
>         blah blah blah
>
> I was expecting len(B) to return 5 but I get
> AttributeError: type object 'B' has no attribute '__len__'
> instead.
> I was expecting len() to call B.__len__() which would invoke
> B.__getattr__ to call A.__len__ but __getattr__ is not being called.
> I can work around this, but I am curious if anyone knows _why_
> __getattr__ is not being called in this situation.
>
> Thanks
> Tim

Unfortunately __getattr__ is not called for special attributes; I'm
not sure if this is by design or a technical limitation. You have to
manually delegate all special methods (or perhaps write a metaclass
that does this for you).

George



From david.trem at gmail.com  Sat Oct 13 05:55:28 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sat, 13 Oct 2007 11:55:28 +0200
Subject: Cross-platform GUI development
In-Reply-To: <as0Qi.8294$UN.1208@newsfe24.lga>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<mailman.159.1192260728.927.python-list@python.org>
	<as0Qi.8294$UN.1208@newsfe24.lga>
Message-ID: <129e1cd10710130255q7654a4c7veabc43284ebab06f@mail.gmail.com>

No issue with pygtk on mac!
Actually I develop on this platform everyday. Macport take care of the
installation for me http://www.macports.org/ (Fink should do the work
too).
Of course native GTK on OSX could be nice but definitely not needed at
this point in time.

David

2007/10/13, Dave Cook <davecook at nowhere.net>:
> On 2007-10-13, David Tremouilles <david.trem at gmail.com> wrote:
>
> >  I would recommend pyGTK http://www.pygtk.org/
>
> Native GTK on OSX is still in its infancy.  For early adopters only at
> this point.  See
>
> http://www.oreillynet.com/articles/author/2414
>
> That leaves PyQt and WxPython as the only other realistic choices.
> Licensing issues aside, I think Qt has the most polished and well
> thought out API.  The OSX Tiger dev tools include WxPython, though you
> may want to install a newer version.  I suggest installing both and
> trying some of the included examples.
>
> Another possibility is Jython, if you like the Java way of doing
> things.
>
> Dave Cook
>
>
>
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From besturk at gmail.com  Sun Oct  7 09:03:06 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 07 Oct 2007 06:03:06 -0700
Subject: Pil image module, "mode" bug..
Message-ID: <1191762186.617411.309700@g4g2000hsf.googlegroups.com>

Hi..
I find the picture color with:
im=Image.open("/%s" %name)
color=im.mode   #p=black & beyaz rgb=color L=grey

This usually work true but in these pictures:
http://malatya.meb.gov.tr/images/alt/ilsis_logo.gif
http://malatya.meb.gov.tr/images/meb.gif

Say me P (black&white) but these pictures are color..

What is the reason of this ?

I'm sorry my bad english



From gslindstrom at gmail.com  Wed Oct 31 12:06:37 2007
From: gslindstrom at gmail.com (Greg Lindstrom)
Date: Wed, 31 Oct 2007 11:06:37 -0500
Subject: PyCon 2008 - Call for Tutorials
Message-ID: <a9f39a410710310906y1a26934fgd22ab37db13028b3@mail.gmail.com>

PyCon 2008 is being held in Chicago this year. The general conference is
March 14-16 with the proceeding day, March 13th, being the traditional
"tutorial day".  We have had a lot of input on topics to cover and now we
are looking for qualified instructors to sign up to present the sessions.
Tutorials are 3 hours long (with break) and instructors are paid for their
effort ($1000.00 + conference registration).

PyCon is planned and run by volunteers just like you.  Why not get involved?

Pop on over to us.pycon.org <http://us.pycon.org/2008/about> for conference
details or email us at pycon-tutorials at python.org and let us know what you
would like to present as a tutorial.

Thanks,
--greg
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/bb165713/attachment.html>

From ptmcg at austin.rr.com  Sun Oct  7 03:31:12 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Sun, 07 Oct 2007 00:31:12 -0700
Subject: ANN: pyparsing 1.4.8 released
Message-ID: <1191742272.784760.208020@w3g2000hsg.googlegroups.com>

I'm happy to announce that I have just uploaded the latest release
(v1.4.8) of pyparsing.  This release has a few new features and
corresponding demonstration examples.  There are also a few minor
bug-fixes, and a performance speedup in the operatorPrecedence method.

Here are the notes:

- Added new helper method nestedExpr to easily create expressions
  that parse lists of data in nested parentheses, braces, brackets,
  etc.

- Added withAttribute parse action helper, to simplify creating
  filtering parse actions to attach to expressions returned by
  makeHTMLTags and makeXMLTags.  Use withAttribute to qualify a
  starting tag with one or more required attribute values, to avoid
  false matches on common tags such as <TD> or <DIV>.

- Added new examples nested.py and withAttribute.py to demonstrate
  the new features.

- Added performance speedup to grammars using operatorPrecedence,
  instigated by Stefan Reich?r - thanks for the feedback, Stefan!

- Fixed bug/typo when deleting an element from a ParseResults by
  using the element's results name.

- Fixed whitespace-skipping bug in wrapper classes (such as Group,
  Suppress, Combine, etc.) and when using setDebug(), reported by
  new pyparsing user dazzawazza on SourceForge, nice job!

- Added restriction to prevent defining Word or CharsNotIn expressions
  with minimum length of 0 (should use Optional if this is desired),
  and enhanced docstrings to reflect this limitation.  Issue was
  raised by Joey Tallieu, who submitted a patch with a slightly
  different solution.  Thanks for taking the initiative, Joey, and
  please keep submitting your ideas!

- Fixed bug in makeHTMLTags that did not detect HTML tag attributes
  with no '= value' portion (such as "<td nowrap>"), reported by
  hamidh on the pyparsing wiki - thanks!

- Fixed minor bug in makeHTMLTags and makeXMLTags, which did not
  accept whitespace in closing tags.

Download pyparsing 1.4.8 at http://sourceforge.net/projects/pyparsing/.
The pyparsing Wiki is at http://pyparsing.wikispaces.com

-- Paul

========================================
Pyparsing is a pure-Python class library for quickly developing
recursive-descent parsers.  Parser grammars are assembled directly in
the calling Python code, using classes such as Literal, Word,
OneOrMore, Optional, etc., combined with operators '+', '|', and '^'
for And, MatchFirst, and Or.  No separate code-generation or external
files are required.  Pyparsing can be used in many cases in place of
regular expressions, with shorter learning curve and greater
readability and maintainability.  Pyparsing comes with a number of
parsing examples, including:
- "Hello, World!" (English, Korean, Greek, and Spanish(new))
- chemical formulas
- configuration file parser
- web page URL extractor
- 5-function arithmetic expression parser
- subset of CORBA IDL
- chess portable game notation
- simple SQL parser
- Mozilla calendar file parser
- EBNF parser/compiler
- Python value string parser (lists, dicts, tuples, with nesting)
  (safe alternative to eval)
- HTML tag stripper
- S-expression parser
- macro substitution preprocessor



From brainsludge at gmail.com  Tue Oct 23 21:59:20 2007
From: brainsludge at gmail.com (Brainsludge)
Date: Tue, 23 Oct 2007 18:59:20 -0700
Subject: Pythonw.exe exits prematurely
In-Reply-To: <1193178936.407815.146200@z24g2000prh.googlegroups.com>
References: <1193176910.507794.136960@y27g2000pre.googlegroups.com>
	<1193178936.407815.146200@z24g2000prh.googlegroups.com>
Message-ID: <1193191160.156352.9570@i13g2000prf.googlegroups.com>


The script has been running console-free for about an hour now without
bailing. Looks like it was the stdout buffer.

Thanks!
Brian

On Oct 23, 4:43 pm, Matimus <mccre... at gmail.com> wrote:
> > I am running WinXP SP2 with Python 2.5.1 and encountered the following
> > issue:
>
> > I wrote a script that logs into my mail server, and checks for new
> > messages every 20 seconds. When a new message is found, it displays a
> > Windows tool tip and prints a line to console indicating a new
> > message.
>
> > When I run the script with python.exe (console), the script runs fine
> > and checks for new messages in perpetuity (as it should). However,
> > when I run the script with pythonw.exe (no console), the script
> > prematurely exits after 10 or 15 minutes. For those 15 minutes, it
> > works as it should, displaying tool tips when new messages arrive.
> > Furthermore, when it exits prematurely, it appears to be exiting
> > gracefully (I have an exit routine that logs out of the mail server
> > and cleans up).
>
> > Does anyone know why this might be the case? The lines printed to
> > console are purely for diagnostic purposes. Otherwise, the two
> > processes should be identical.
>
> You say it exits gracefully, I'm not sure I know what you mean. My
> guess is that you are writing to stdout, and when the buffer fills up
> and tries to dump the program exits with an exception (but returns
> 0).
>
> I've run into something similar before, you can reproduce it with
> this:
> [code]
> import sys
>
> f2 = open("bo.err", "w")
> sys.stderr = f2
> for i in range(10000):
>     print i
> [/code]
>
> Run with pythonw then look at "bo.err" to see the exception.
>
> You can either stop printing to stdout and send the stuff somewhere
> else (maybe use the logging module), or you can assign stdout and
> stderr to nul.
>
> [code]
> import sys
> import os
>
> nul = open(sys.devnull,'w')
> sys.stdout = nul
> sys.stderr = nul
>
> # The rest of your code
> [/code]
>
> Matt




From steve at holdenweb.com  Wed Oct  3 22:22:57 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 22:22:57 -0400
Subject: module confusion
In-Reply-To: <fe141n$9u8$1@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au> <fe141n$9u8$1@lust.ihug.co.nz>
Message-ID: <fe1ipt$lrb$2@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <874ph8sdhx.fsf at benfinney.id.au>, Ben Finney wrote:
> 
>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:
>>
>>> On my Gentoo system:
>>>
>>>     >>> import os
>>>     >>> os.path
>>>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
>>>
>>> It's just a variable that happens to point to the posixpath module.
>> There's no "pointing" going on. It's another name bound to the same
>> object, of equal status to the 'posixpath' name.
>>
>> Python doesn't have pointers, and even "variable" is a misleading term
>> in Python. Best to stick to "name" and "bound to".
> 
> In Python, all names _are_ variables. They are not "bound" to objects. The
> value of os.path is a pointer. It's implemented as a pointer, it has all
> the semantics of a pointer.
> 
> Honestly, why do people react to the word "pointer" as though computers have
> to wear underwear to conceal something shameful going on in their nether
> regions?

Because they have been told by their church that all God-fearing names 
do what names have always done in programming languages, which is to 
describe areas of memory of a particular size, type and locality.

You and I know that the semantics of Python names are precisely those of 
(to use an Algol 68 term, unless I am mistaken) automatically 
dereferenced pointers to objects of arbitrary type. I actually think 
that's one of the neatest things about Python, and I believe it's no 
accident that both Tim Peters and I were Icon enthusiasts.

But the rest of the world clings to its illusions.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From plumbandtree at gmail.com  Mon Oct 29 02:03:55 2007
From: plumbandtree at gmail.com (plumb and tree)
Date: Sun, 28 Oct 2007 23:03:55 -0700
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
Message-ID: <1193637835.936397.307160@e9g2000prf.googlegroups.com>

I've been trying for days to build 64 bit python with Solaris 10 + Sun
Studio 12.

Can anyone helpl please.

This is how I tried to do build:

# ./configure --prefix=/opt/python2.4 --without-gcc --enable-shared
checking MACHDEP... sunos5
checking EXTRAPLATDIR...
checking for --without-gcc... yes
checking for --with-cxx=<compiler>... no
checking for c++... /opt/SUNWspro/bin/CC
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for gcc... cc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... no
checking whether cc accepts -g... yes
checking for cc option to accept ANSI C... none needed
checking how to run the C preprocessor... /opt/SUNWspro/bin/CC
configure: error: C preprocessor "/opt/SUNWspro/bin/CC" fails sanity
check
See `config.log' for more details.

(sorry for the long log file but I'm not sure which part are
important)
config.log:
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by python configure 2.4, which was
generated by GNU Autoconf 2.59.  Invocation command line was

  $ ./configure --prefix=/opt/python2.4 --without-gcc --enable-shared

## --------- ##
## Platform. ##
## --------- ##

hostname = zone2
uname -m = sun4u
uname -r = 5.10
uname -s = SunOS
uname -v = Generic_118833-36

/usr/bin/uname -p = sparc
/bin/uname -X     = System = SunOS
Node = zone2
Release = 5.10
KernelID = Generic_118833-36
Machine = sun4u
BusType = <unknown>
Serial = <unknown>
Users = <unknown>
OEM# = 0
Origin# = 1
NumCPU = 1

/bin/arch              = sun4
/usr/bin/arch -k       = sun4u
/usr/convex/getsysinfo = unknown
hostinfo               = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /usr/local/bin
PATH: /usr/xpg4/bin
PATH: /usr/sfw/bin
PATH: /opt/SUNWspro/bin
PATH: /usr/local/mysql/bin
PATH: /usr/ccs/bin
PATH: /usr/local/bin
PATH: /usr/xpg4/bin
PATH: /usr/sfw/bin
PATH: /opt/SUNWspro/bin
PATH: /usr/local/mysql/bin
PATH: /usr/ccs/bin
PATH: /usr/local/bin
PATH: /usr/xpg4/bin
PATH: /usr/sfw/bin
PATH: /opt/SUNWspro/bin
PATH: /usr/local/mysql/bin
PATH: /usr/ccs/bin
PATH: /usr/sbin
PATH: /usr/bin
PATH: /usr/openwin/bin
PATH: /usr/sfw/bin
PATH: /usr/openwin/bin
PATH: /usr/sfw/bin
PATH: /usr/openwin/bin
PATH: /usr/sfw/bin


## ----------- ##
## Core tests. ##
## ----------- ##

configure:1510: checking MACHDEP
configure:1655: result: sunos5
configure:1661: checking EXTRAPLATDIR
configure:1676: result:
configure:1697: checking for --without-gcc
configure:1746: result: yes
configure:1752: checking for --with-cxx=<compiler>
configure:1773: result: no
configure:1792: checking for c++
configure:1818: result: /opt/SUNWspro/bin/CC
configure:1858: checking for C++ compiler default output file name
configure:1861: /opt/SUNWspro/bin/CC   -L/opt/SUNWmlib/lib -lrt -lm
conftest.cc  >&5
configure:1864: $? = 0
configure:1910: result: a.out
configure:1915: checking whether the C++ compiler works
configure:1921: ./a.out
configure:1924: $? = 0
configure:1941: result: yes
configure:1948: checking whether we are cross compiling
configure:1950: result: no
configure:1953: checking for suffix of executables
configure:1955: /opt/SUNWspro/bin/CC -o conftest   -L/opt/SUNWmlib/lib
-lrt -lm conftest.cc  >&5
configure:1958: $? = 0
configure:1983: result:
configure:2057: checking for gcc
configure:2083: result: cc
configure:2327: checking for C compiler version
configure:2330: cc -V </dev/null >&5
cc: Sun C 5.9 SunOS_sparc Patch 124867-01 2007/07/12
usage: cc [ options] files.  Use 'cc -flags' for details
configure:2333: $? = 1
configure:2356: checking for C compiler default output file name
configure:2359: cc -O2  -L/opt/SUNWmlib/lib -lrt -lm conftest.c  >&5
configure:2362: $? = 0
configure:2408: result: a.out
configure:2413: checking whether the C compiler works
configure:2419: ./a.out
configure:2422: $? = 0
configure:2439: result: yes
configure:2446: checking whether we are cross compiling
configure:2448: result: no
configure:2451: checking for suffix of executables
configure:2453: cc -o conftest -O2  -L/opt/SUNWmlib/lib -lrt -lm
conftest.c  >&5
configure:2456: $? = 0
configure:2481: result:
configure:2487: checking for suffix of object files
configure:2508: cc -c -O2  conftest.c >&5
configure:2511: $? = 0
configure:2533: result: o
configure:2537: checking whether we are using the GNU C compiler
configure:2561: cc -c -O2  conftest.c >&5
"conftest.c", line 15: undefined symbol: choke
"conftest.c", line 15: syntax error before or at: me
cc: acomp failed for conftest.c
configure:2567: $? = 2
configure: failed program was:
| /* confdefs.h.  */
|
| #define _GNU_SOURCE 1
| #define _NETBSD_SOURCE 1
| #define __BSD_VISIBLE 1
| #define _BSD_TYPES 1
| #define _XOPEN_SOURCE 500
| #define _POSIX_C_SOURCE 200112L
| /* end confdefs.h.  */
|
| int
| main ()
| {
| #ifndef __GNUC__
|        choke me
| #endif
|
|   ;
|   return 0;
| }
configure:2593: result: no
configure:2599: checking whether cc accepts -g
configure:2620: cc -c -g  conftest.c >&5
configure:2626: $? = 0
configure:2630: test -z
			 || test ! -s conftest.err
configure:2633: $? = 0
configure:2636: test -s conftest.o
configure:2639: $? = 0
configure:2650: result: yes
configure:2667: checking for cc option to accept ANSI C
configure:2737: cc  -c -O2  conftest.c >&5
"conftest.c", line 53: warning: statement not reached
configure:2743: $? = 0
configure:2747: test -z
			 || test ! -s conftest.err
configure:2750: $? = 0
configure:2753: test -s conftest.o
configure:2756: $? = 0
configure:2774: result: none needed
configure:2792: cc -c -O2  conftest.c >&5
"conftest.c", line 2: warning: old-style declaration or incorrect type
for: choke
"conftest.c", line 2: syntax error before or at: me
"conftest.c", line 3: warning: old-style declaration or incorrect type
for: me
cc: acomp failed for conftest.c
configure:2798: $? = 2
configure: failed program was:
| #ifndef __cplusplus
|   choke me
| #endif
configure:2939: checking how to run the C preprocessor
configure:3057: result: /opt/SUNWspro/bin/CC
configure:3081: /opt/SUNWspro/bin/CC  conftest.c
"conftest.c", line 15: Error: Syntax is not defined.
"conftest.c", line 15: Error: "," expected instead of "end of file".
"conftest.c", line 15: Error: Use ";" to terminate declarations.
3 Error(s) detected.
configure:3087: $? = 3
configure: failed program was:
| /* confdefs.h.  */
|
| #define _GNU_SOURCE 1
| #define _NETBSD_SOURCE 1
| #define __BSD_VISIBLE 1
| #define _BSD_TYPES 1
| #define _XOPEN_SOURCE 500
| #define _POSIX_C_SOURCE 200112L
| /* end confdefs.h.  */
| #ifdef __STDC__
| # include <limits.h>
| #else
| # include <assert.h>
| #endif
| 		     Syntax error
configure:3081: /opt/SUNWspro/bin/CC  conftest.c
"conftest.c", line 15: Error: Syntax is not defined.
"conftest.c", line 15: Error: "," expected instead of "end of file".
"conftest.c", line 15: Error: Use ";" to terminate declarations.
3 Error(s) detected.
configure:3087: $? = 3
configure: failed program was:
| /* confdefs.h.  */
|
| #define _GNU_SOURCE 1
| #define _NETBSD_SOURCE 1
| #define __BSD_VISIBLE 1
| #define _BSD_TYPES 1
| #define _XOPEN_SOURCE 500
| #define _POSIX_C_SOURCE 200112L
| /* end confdefs.h.  */
| #ifdef __STDC__
| # include <limits.h>
| #else
| # include <assert.h>
| #endif
| 		     Syntax error
configure:3156: error: C preprocessor "/opt/SUNWspro/bin/CC" fails
sanity check
See `config.log' for more details.

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_c_compiler_gnu=no
ac_cv_env_CC_set=set
ac_cv_env_CC_value=/opt/SUNWspro/bin/cc
ac_cv_env_CFLAGS_set=set
ac_cv_env_CFLAGS_value=-O2
ac_cv_env_CPPFLAGS_set=set
ac_cv_env_CPPFLAGS_value=
ac_cv_env_CPP_set=set
ac_cv_env_CPP_value=/opt/SUNWspro/bin/CC
ac_cv_env_LDFLAGS_set=set
ac_cv_env_LDFLAGS_value='-L/opt/SUNWmlib/lib -lrt -lm'
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=
ac_cv_exeext=
ac_cv_objext=o
ac_cv_prog_CPP=/opt/SUNWspro/bin/CC
ac_cv_prog_CXX=/opt/SUNWspro/bin/CC
ac_cv_prog_ac_ct_CC=cc
ac_cv_prog_cc_g=yes
ac_cv_prog_cc_stdc=

## ----------------- ##
## Output variables. ##
## ----------------- ##

AR=''
BASECFLAGS='-# -xc99=all,lib -m64 -H -Xc -c -errtags=yes'
BLDLIBRARY=''
BLDSHARED=''
BUILDEXEEXT=''
CC='cc'
CCSHARED=''
CFLAGS='-O2'
CFLAGSFORSHARED=''
CONFIGURE_MACOSX_DEPLOYMENT_TARGET=''
CONFIG_ARGS=''--prefix=/opt/python2.4' '--without-gcc' '--enable-
shared' 'CC=/opt/SUNWspro/bin/cc' 'CFLAGS=-O2' 'CPPFLAGS=' 'CPP=/opt/
SUNWspro/bin/CC' 'LDFLAGS=-L/opt/SUNWmlib/lib -lrt -lm''
CPP='/opt/SUNWspro/bin/CC'
CPPFLAGS=''
CXX='/opt/SUNWspro/bin/CC'
DEFS=''
DLINCLDIR=''
DLLLIBRARY=''
DYNLOADFILE=''
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EGREP=''
EXEEXT=''
EXPORT_MACOSX_DEPLOYMENT_TARGET='#'
EXTRAMACHDEPPATH=''
EXTRAPLATDIR=''
FRAMEWORKALTINSTALLFIRST=''
FRAMEWORKALTINSTALLLAST=''
FRAMEWORKINSTALLFIRST=''
FRAMEWORKINSTALLLAST=''
FRAMEWORKUNIXTOOLSPREFIX='/opt/python2.4'
HAVE_GETHOSTBYNAME=''
HAVE_GETHOSTBYNAME_R=''
HAVE_GETHOSTBYNAME_R_3_ARG=''
HAVE_GETHOSTBYNAME_R_5_ARG=''
HAVE_GETHOSTBYNAME_R_6_ARG=''
INSTALL_DATA=''
INSTALL_PROGRAM=''
INSTALL_SCRIPT=''
INSTSONAME=''
LDFLAGS='-L/opt/SUNWmlib/lib -lrt -lm'
LDLAST=''
LDLIBRARY=''
LDLIBRARYDIR=''
LDSHARED=''
LIBC=''
LIBM=''
LIBOBJS=''
LIBRARY=''
LIBS=''
LIBTOOL_CRUFT=''
LINKCC=''
LINKFORSHARED=''
LN=''
LTLIBOBJS=''
MACHDEP='sunos5'
MACHDEP_OBJS=''
MAINOBJ='python.o'
OBJEXT='o'
OPT=''
OTHER_LIBTOOL_OPT=''
PACKAGE_BUGREPORT='http://www.python.org/python-bugs'
PACKAGE_NAME='python'
PACKAGE_STRING='python 2.4'
PACKAGE_TARNAME='python'
PACKAGE_VERSION='2.4'
PATH_SEPARATOR=':'
PYTHONFRAMEWORK=''
PYTHONFRAMEWORKDIR='no-framework'
PYTHONFRAMEWORKINSTALLDIR=''
PYTHONFRAMEWORKPREFIX=''
RANLIB=''
RUNSHARED=''
SGI_ABI=''
SHELL='/bin/bash'
SHLIBS=''
SIGNAL_OBJS=''
SO=''
SOVERSION='1.0'
SRCDIRS=''
THREADHEADERS=''
THREADOBJ=''
TRUE=''
UNICODE_OBJS=''
UNIVERSALSDK=''
USE_SIGNAL_MODULE=''
USE_THREAD_MODULE=''
VERSION='2.4'
ac_ct_CC='cc'
ac_ct_RANLIB=''
bindir='${exec_prefix}/bin'
build_alias=''
datadir='${prefix}/share'
exec_prefix='NONE'
host_alias=''
includedir='${prefix}/include'
infodir='${prefix}/info'
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localstatedir='${prefix}/var'
mandir='${prefix}/man'
oldincludedir='/usr/include'
prefix='/opt/python2.4'
program_transform_name='s,x,x,'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target_alias=''

## ----------- ##
## confdefs.h. ##
## ----------- ##

#define _BSD_TYPES 1
#define _GNU_SOURCE 1
#define _NETBSD_SOURCE 1
#define _POSIX_C_SOURCE 200112L
#define _XOPEN_SOURCE 500
#define __BSD_VISIBLE 1

configure: exit 1

-------end of
config.log------------------------------------------------------------------------


thanks,
dg



From cadet.bramble at gmail.com  Tue Oct  2 16:39:51 2007
From: cadet.bramble at gmail.com (bramble)
Date: Tue, 02 Oct 2007 20:39:51 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <mailman.1386.1191324798.2658.python-list@python.org>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<1191292451.096937.63000@50g2000hsm.googlegroups.com>
	<1191294265.611162.57730@g4g2000hsf.googlegroups.com>
	<mailman.1386.1191324798.2658.python-list@python.org>
Message-ID: <1191357591.426416.256160@n39g2000hsh.googlegroups.com>

On Oct 2, 7:33 am, Carsten Haese <cars... at uniqsys.com> wrote:
> On Tue, 2007-10-02 at 03:04 +0000, bramble wrote:
> > But Py3k is all about breaking compatibility
>
> That's a complete distortion of Python 3.0's mission. Python 3.0 breaks
> backwards compatibility only where there exist good reasons to do so. As
> Guido put it in a recent Python-3000 post, "Python 3000 is boldly
> choosing to be backwards compatible, except in cases where a real
> benefit can be obtained by being incompatible."
>
> So, unless you can make a case that a real benefit can be obtained by
> removing Tkinter, it'll stay.

Well, it of course wouldn't break backward compatibility by simply
removing it from the standard library and providing it as an optional
extra set of modules.



From paul at boddie.org.uk  Mon Oct 22 06:31:38 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Mon, 22 Oct 2007 03:31:38 -0700
Subject: using "request" variable in python web program
In-Reply-To: <1193042095.275835.245920@i13g2000prf.googlegroups.com>
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
	<1192924876.257468.27810@v29g2000prd.googlegroups.com>
	<1192996769.692284.163300@v23g2000prn.googlegroups.com>
	<1192997247.369705.326060@q5g2000prf.googlegroups.com>
	<1193042095.275835.245920@i13g2000prf.googlegroups.com>
Message-ID: <1193049098.776008.50630@q3g2000prf.googlegroups.com>

On 22 Okt, 10:34, sami <sami.... at gmail.com> wrote:
> > See the library reference for information on how to get the value of
> > form/request parameters from the CGI environment:
>
> >http://docs.python.org/lib/node561.html
>
> > Paul
>
> Thanks again Paul - now I can see that the "request" object is a
> string of name/value pairs that occurs after a "?" in a url e.g.
> url.com/index.cgi?name=sami&lang=python - is that correct? Googling
> for this information is useless since the word "request" is so common
> on the www

The string after "?" in a URL is actually the "query string" and is
typically exposed as the QUERY_STRING environment variable in CGI. See
here for more specific details:

http://www.w3.org/CGI/
http://cgi-spec.golux.com/

What the cgi module provides is some conveniences for automatically
decoding the query string - perhaps not *so* difficult, you might
think, even taking the decoding of encoded values into account (such
as things like "%20" that you find in URLs) - but the cgi module also
provides facilities to decode request parameters that are supplied in
the body of a request (such as those provided in POST requests), and
that can be a more difficult exercise.

Paul



From panguohualove at sina.com  Sun Oct 14 10:22:21 2007
From: panguohualove at sina.com (panguohua)
Date: Sun, 14 Oct 2007 07:22:21 -0700
Subject: a good website for softwares,sports,movies and music ,sex etc.
Message-ID: <1192371741.192335.264770@t8g2000prg.googlegroups.com>

www.space666.com



good!!!!!!!!!!!!!



From kibleur.christophe at gmail.com  Fri Oct  5 18:09:55 2007
From: kibleur.christophe at gmail.com (Tool69)
Date: Fri, 05 Oct 2007 15:09:55 -0700
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <4706ad5e$0$30618$426a74cc@news.free.fr>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
	<mailman.1586.1191596681.2658.python-list@python.org>
	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
	<47069e40$0$16410$426a74cc@news.free.fr>
	<pn8dg3d7iu3fpn7pthn3orlmvvqmqvfi7v@4ax.com>
	<4706a7a9$0$12477$426a34cc@news.free.fr>
	<rjadg35sdcl928mqv52buk8livucrerivs@4ax.com>
	<4706ad5e$0$30618$426a74cc@news.free.fr>
Message-ID: <1191622195.830959.155510@50g2000hsm.googlegroups.com>

Thanks for it, what tools did you use to build the mag : Scribus ?



From stargaming at gmail.com  Mon Oct  1 10:05:42 2007
From: stargaming at gmail.com (Stargaming)
Date: 01 Oct 2007 14:05:42 GMT
Subject: Select as dictionary...
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<mailman.1333.1191247082.2658.python-list@python.org>
Message-ID: <4700feb6$0$11466$9b622d9e@news.freenet.de>

On Mon, 01 Oct 2007 09:57:46 -0400, J. Clifford Dyer wrote:

> On Mon, Oct 01, 2007 at 06:32:07AM -0700, Besturk.Net Admin wrote
> regarding Select as dictionary...:
>> 
>> aia.execute("SELECT id, w from list") links=aia.fetchall()
>> print links
>> 
>> and result
>> [(1, 5), (2,5).......] (2 million result)
>> 
>> I want to see this result directly as a dictionary:
>> 
>> {1: 5, 2: 5 .....}
>> 
>> How do i select in this format ?
>> 
> Try this:
> 
> aia.execute("SELECT id, w from list") 
> links=aia.fetchall()
> linkdict = dict()
> for k,v in links:
>     linkdict[k] = v
> print linkdict

Besides using the already pointed out DB adapters, you can easily 
transform a list of items into a dictionary with the `dict` constructor::

    >>> links = [(1, 5), (2, 5), (3, 10)]
    >>> dict(links)
    {1: 5, 2: 5, 3: 10}

Stargaming


From no.reply at here.com  Wed Oct  3 05:52:52 2007
From: no.reply at here.com (Anonymous)
Date: Wed, 03 Oct 2007 10:52:52 +0100
Subject: Building VTK-5.0.3-1 with Python bindings (VS 8.0)
Message-ID: <zKednal_helm-57anZ2dneKdnZydnZ2d@bt.com>

I am having problems with CMake.

I currently have the ff errors (paths not set - and I am not sure what 
to set them to):

TK_INCLUDE_PATH
TK_INTERNAL_PATH
TK_XLIB_PATH  (I don't know why this is reqd, since I'm running W2k)

Has anyone done this before or now how to fix these errors ?


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct  4 05:37:59 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 04 Oct 2007 09:37:59 -0000
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
Message-ID: <13g9d3nagotcab6@corp.supernews.com>

On Mon, 01 Oct 2007 09:09:21 -0700, Arnaud Delobelle wrote:

> As pointed out by others, implementations of rationals in Python abound.
> Whereas there is a canonical representation of floats and ints (and even
> longints) in the machine, it is not the case for rationals. Moreover
> most programming tasks do not need rationals, so why burden the language
> with them? If one needs them, there are perfectly adequate modules to
> import (even though I, like many others I suspect, have my own
> implementation in pure Python).  Finally, arithmetic would become very
> confusing if there were three distinct numeric types; it already causes
> enough confusion with two!

Or, to put it another way:


As pointed out by others, implementations of sets in Python abound. 
Whereas there is a canonical representation of floats and ints in the 
machine, it is not the case for sets. Moreover most programming tasks do 
not need sets, so why burden the language with them? If one needs them, 
there are perfectly adequate modules to import (even though I, like many 
others I suspect, have my own implementation in pure Python).  Finally, 
programming would become very confusing if there were three distinct 
sequence types; it already causes enough confusion with two!



-- 
Steven.


From andreas.tawn at ubisoft.com  Wed Oct  3 05:28:44 2007
From: andreas.tawn at ubisoft.com (Andreas Tawn)
Date: Wed, 3 Oct 2007 11:28:44 +0200
Subject: generating range of numbers
Message-ID: <8AEDA5E3386EA742B8C24C95FF0C7580013D105B@PDC-MAIL3.ubisoft.org>

>i just want to generate numbers in the form like:
>
>1,2,4,8,16,32.....to a maximum of 1024
>using a range function

>>> a = [2**x for x in range(11)]
>>> a
[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024]

Cheers,

Andreas Tawn
Lead Technical Artist
Ubisoft Reflections

-- 
http://mail.python.org/mailman/listinfo/python-list


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 25 00:47:51 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 25 Oct 2007 04:47:51 -0000
Subject: How to best send email to a low volume list?
References: <1193244896.747562.291580@y27g2000pre.googlegroups.com>
	<1193246253.4017.34.camel@skinner.madoff.com>
	<mailman.436.1193285317.13605.python-list@python.org>
Message-ID: <13i07vnbbosmi49@corp.supernews.com>

On Wed, 24 Oct 2007 23:08:14 -0500, Shane Geiger wrote:

> A mailing list manager is really overkill for what he is trying to do
> *IF* he is not maintaining a discussion list.

It's not overkill at all. Mailman is easy to install (at least on a Red 
Hat based Linux system, your mileage may vary elsewhere) and easy to use 
*and* for bonus marks it's written in Python.


> A "newsletter" list
> doesn't sound like a discussion list, especially since he wants to hide
> the email addresses of the other people.

There's more to running a mailing list than just sending emails. How do 
you handle archives, the invariable complaints of missing newsletters, 
requests for subscriptions, unsubscriptions, and temporary "I'll be on 
holiday for a month, don't email me until I return" requests? And even if 
it is not a discussion list, people expect to be able to write back to 
the author/editor of the newsletter.



-- 
Steven.


From mail at timgolden.me.uk  Tue Oct  9 04:24:53 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Tue, 09 Oct 2007 09:24:53 +0100
Subject: How to create a file on users XP desktop
In-Reply-To: <470A489D.5020507@timgolden.me.uk>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>	<1191735169.441525.106060@o80g2000hse.googlegroups.com>	<4708CAF4.7020206@bigfoot.com>	<47090D86.5080805@tim.thechases.com>	<mailman.1648.1191778298.2658.python-list@python.org>	<1191853183.871616.227350@k79g2000hse.googlegroups.com>	<1191854927.113225.67880@o80g2000hse.googlegroups.com>
	<470A489D.5020507@timgolden.me.uk>
Message-ID: <470B3AD5.1020002@timgolden.me.uk>

>> On Oct 8, 9:19 am, goldtech <goldt... at worldpost.com> wrote:
>>> How did you learn Win32com?
>>>
>>> Other than the O'Reilly book, I've never found a lot of
>>> documentation.
>>>
>>> Trying to browse COM in PythonWin is tough - there's tons of stuff in
>>> there. I've never been able to find the Win32com classes, methods,
>>> usage examples when I browse COM in PythonWin.
>>>
>>> For example where is, shell.SHGetFolderPath and shellcon.CSIDL_DESKTOP
>>> officially documented?

Tim Golden wrote:
> FWIW, the pywin32 distribution itself also comes with a local
> .chm file. But aside from that, there have been several abortive
> attempts -- including by Mike & myself! -- to get some kind of
> online help going for pywin32, but nothing's really gained traction,
> and we've all got more interesting things to be doing...

To show willing :) I've added a howto on this subject to my
occasionally-updated list of Python win32 howto-s:

   http://timgolden.me.uk/python/win32_how_do_i/get-the-desktop-folder.html

and a bonus, also from the shell area:

   http://timgolden.me.uk/python/win32_how_do_i/browse-for-a-folder.html

I usually manage to do a few of these at one go once I gather
momentum, so hopefully I'll add a few more in today or tomorrow.

TJG


From michael at jedimindworks.com  Tue Oct  2 17:29:37 2007
From: michael at jedimindworks.com (Michael Bentley)
Date: Tue, 2 Oct 2007 14:29:37 -0700
Subject: Using ImageGrab (PIL) to capture screen of remote computer
In-Reply-To: <bda7ac6d0710020233x52ca9f7fsa2a8c834fac15bdd@mail.gmail.com>
References: <bda7ac6d0710020233x52ca9f7fsa2a8c834fac15bdd@mail.gmail.com>
Message-ID: <0E1E6A57-9966-45F8-B113-003F8DC59AE6@jedimindworks.com>


On Oct 2, 2007, at 2:33 AM, jorma kala wrote:

> Is it possible to use ImageGrab of the Python Imaging Library to  
> capture the screen of a remote computer?
>
> I'm running my python program on a computer that is connected  
> directly via a ethernet crossover cable to another computer.
> Can I somehow get ImageGrab to grab the display of the remote  
> computer by specifying the IP address ?

No.  Unless you're using something like VNC to duplicate the remote  
computer's screen locally...  In which case you're still capturing  
the screen of the local machine.

hth,
Michael
---
Let the wookie win.



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071002/dc309cf6/attachment.html>

From f.guerrieri at gmail.com  Mon Oct 15 10:51:31 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Mon, 15 Oct 2007 16:51:31 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <13h6te7sk7iun42@corp.supernews.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
	<mailman.16.1192446949.13605.python-list@python.org>
	<13h6nlmd8aku2ea@corp.supernews.com>
	<mailman.17.1192452456.13605.python-list@python.org>
	<13h6te7sk7iun42@corp.supernews.com>
Message-ID: <79b79e730710150751x78102471y3b8fc84bee7d4857@mail.gmail.com>

On 10/15/07, Steven D'Aprano <steve at remove-this-cybersource.com.au> wrote:
> On Mon, 15 Oct 2007 14:47:30 +0200, Francesco Guerrieri wrote:
>
> >> def myreversed(sequence):
> >>     if isinstance(sequence, basestring):
> >>         return type(sequence)().join(reversed(sequence))
> >>     else:
> >>         return type(sequence)(reversed(sequence))
> >>
> >> (in fact, that's so simple I wonder why the built-in reversed() doesn't
> >> do that).
> >
> > simple:
> > In the face of ambiguity, refuse the temptation to guess.
>
> What ambiguity? What guess? The above is completely unambiguous: it
> returns a sequence of the same type as the input. It doesn't support
> xrange objects, but that's not really a great loss.

I could say that it depends on the xrange object.. but the truth is
that I answered too quickly. Your suggestion was not ambiguous. Sorry
:-)

francesco


From kay.schluehr at gmx.net  Fri Oct  5 04:09:19 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 05 Oct 2007 01:09:19 -0700
Subject: Cross platform way of finding number of processors on a machine?
In-Reply-To: <mailman.1562.1191571026.2658.python-list@python.org>
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<66d0a6e10710042102m5e7bf9a9i9c6e7ff5c796c608@mail.gmail.com>
	<mailman.1562.1191571026.2658.python-list@python.org>
Message-ID: <1191571759.756054.319730@o80g2000hse.googlegroups.com>

On 5 Okt., 09:58, Tim Golden <m... at timgolden.me.uk> wrote:
> Nicholas Bastin wrote:
> > On 10/4/07, John <weekender... at yahoo.com> wrote:
> >> Is there a way to find the number of processors on a machine (on linux/
> >> windows/macos/cygwin) using python code (using the same code/cross
> >> platform code)?
>
> > There's no single call that will give you the same info on every
> > platform, but you can obviously write this yourself and switch based
> > on os.uname()[0] in most cases.
>
> Second that point about not getting one cross-platform
> answer. Under Windows, WMI is often the way to go for
> these things:
>
>    http://msdn2.microsoft.com/en-us/library/aa394373.aspx
>
> but, as Nicholas noted:
>
>    """
>    Windows Server 2003, Windows XP, and Windows 2000:
>      This property is not available.
>    """
>
> since it's presumably not available in anything earlier either,
> that leaves you with Vista or the early-adopter editions of the
> next Windows Server product.
>
> TJG

Remarkable. I've a two years old Windows XP dual core notebook and
when I'm asking Python I get the correct answer:

>>> import os
>>> os.environ['NUMBER_OF_PROCESSORS']
2

However this feature might not be guaranteed by Microsoft for
arbitrary computers using their OS?

Kay



From jcd at sdf.lonestar.org  Tue Oct  9 00:55:45 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Tue, 09 Oct 2007 00:55:45 -0400
Subject: pytz has so many timezones!
In-Reply-To: <66d0a6e10710081827m47655a65p2a9b77165777180d@mail.gmail.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>	<mailman.1676.1191866438.2658.python-list@python.org>	<1191874352.380018.216090@k79g2000hse.googlegroups.com>	<mailman.1685.1191875226.2658.python-list@python.org>	<1191891827.863258.23620@y42g2000hsy.googlegroups.com>
	<66d0a6e10710081827m47655a65p2a9b77165777180d@mail.gmail.com>
Message-ID: <470B09D1.1070804@sdf.lonestar.org>

Nicholas Bastin wrote:
>
> There is no central authority which defines global time zones.  The
> functional definition of a time zone is merely a geographical area of
> the earth that has adopted the same local time rules.
>

In fact, even the authorities who do define time zones don't always
have the final say.  In Xinjiang province in Western China, the
official time zone is the same as Beijing, even though Xinjiang is
about as far west of Beijing as Nevada is from DC, so the sun comes up
around "noon" and sets around "midnight."  So many people set their
clocks to unofficial Xinjiang time, three hours offset from Beijing.

In offering a "Xinjiang" timezone set to the unofficial time, you
might win some customers who see you as being on their side.  Xinjiang
is a muslim country, so you might also score points with muslims
elsewhere in the world who see their minority Uighur brethren as
oppressed by the authorities of Beijing.  On the other hand, you might
annoy the authorities in Beijing.  Which is just to say that choice of
time zone is not just a geographic issue.  There are political,
diplomatic issues to weigh as well.

Cheers,
Cliff




From cesar.ortiz at gmail.com  Fri Oct 26 11:25:16 2007
From: cesar.ortiz at gmail.com (cesar.ortiz)
Date: Fri, 26 Oct 2007 08:25:16 -0700
Subject: distutils error dealing with rpms?
Message-ID: <1193412316.160431.261530@57g2000hsv.googlegroups.com>

Hi all,

I am trying to generate an distribution with distutils, using in the
setup() invocation the parameters 'packages' and 'data_files'.
If I use bdist, the tar.gz contains all the files, but I I use
bdist_rpm the data_files are not included in the rpm.

has anyone face this before?
I am using redhad, with rpm 4.4.2 and python 2.4.

Thank you, C?sar



From paul.hankin at gmail.com  Wed Oct 10 08:23:06 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 10 Oct 2007 05:23:06 -0700
Subject: function wrappers
In-Reply-To: <mailman.20.1192013978.927.python-list@python.org>
References: <mailman.20.1192013978.927.python-list@python.org>
Message-ID: <1192018986.314664.325600@d55g2000hsg.googlegroups.com>

On Oct 10, 11:39 am, Ramon Crehuet <rcs... at iiqab.csic.es> wrote:
> Dear all,
> I have a Fortran programming background and I have some difficulties in
> understading how function wrappers work. I have delved into the subject
> because of the new decorators, but I understand the decorator syntax. My
> ignorance is more profound... Here is an example without decorators:

Functions are first-class values: this means they can be passed
around, used in expressions, and returned from other functions in just
the same way that ints, floats and other more obvious types.

All a decorator is a function that takes the function you give it, and
returns a new function. In your 'require_int' example, it returns the
nested function 'wrapper'. The clever bit is that 'wrapper' remembers
the argument to the decorator - func - (with value p1 in your
example), and can call it later.

Think of the 'def' statement as constructing an object which happens
to be a function. It has a dictionary which is used for variable
lookup so that it can remember 'func'. The def statement also binds
this function object to a name: the name of the function. You can see
some of the gory details if you go:

def f():
   print 42

dir(f)

... list of attributes of the function object.

--
Paul Hankin



From bj_666 at gmx.net  Tue Oct 30 03:53:17 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 30 Oct 2007 07:53:17 GMT
Subject: Built-in functions and keyword arguments
References: <20071029173742.8162.554468338.divmod.quotient.29276@ohm>
	<mailman.628.1193722768.13605.python-list@python.org>
Message-ID: <5oo67dFliu6sU1@mid.uni-berlin.de>

On Tue, 30 Oct 2007 07:28:07 +0200, Hendrik van Rooyen wrote:

> yes - the point I am trying to make is that the intention of the OP
> was to use an assignment as an argument, and you can't do that,
> as the interpreter thinks its a keyword.   Hence the gotcha.

Then you must have misunderstand his intention.  He wanted to give the
optional third argument of `getattr()` as keyword argument.

Ciao,
	Marc 'BlackJack' Rintsch


From whamil1 at entergy.com  Tue Oct  9 11:33:18 2007
From: whamil1 at entergy.com (Hamilton, William )
Date: Tue, 9 Oct 2007 10:33:18 -0500
Subject: List loops
In-Reply-To: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>
Message-ID: <588D53831C701746A2DF46E365C018CE01D2CB76@LITEXETSP001.etrsouth.corp.entergy.com>

> From: Tommy Grav
> 
> Hi everyone,
> 
>    I have a list of objects where I have want to do two loops.
> I want to loop over the list and inside this loop, work on all
> the elements of the list after the one being handled in the outer
> loop. I can of course do this with indexes:
> 
>  >>> alist = range(3)
>  >>> for i in xrange(len(alist)):
> ...   for j in xrange(i+1,len(alist)):
> ...     print i,j,alist[i],alist[j]
> ...
> 0 1 0 1
> 0 2 0 2
> 1 2 1 2
>  >>>
> 
> 
> Is there a way to do this without using indexes?
> 

You have to use indices because you are printing the indices.  Given
that, the following loop does what it looks like you are trying to do.

>>> alist = range(3)
>>> for index, i in enumerate(alist):
	for jndex, j in enumerate(alist[index:]):
		print index, jndex, i, j

		
0 0 0 0
0 1 0 1
0 2 0 2
1 0 1 1
1 1 1 2
2 0 2 2
>>>


--
-Bill Hamilton


From bma+lists at subvert.org.uk  Thu Oct 25 08:50:19 2007
From: bma+lists at subvert.org.uk (Benjamin M. A'Lee)
Date: Thu, 25 Oct 2007 13:50:19 +0100
Subject: How to best send email to a low volume list?
In-Reply-To: <13i07vnbbosmi49@corp.supernews.com>
References: <1193244896.747562.291580@y27g2000pre.googlegroups.com>
	<1193246253.4017.34.camel@skinner.madoff.com>
	<mailman.436.1193285317.13605.python-list@python.org>
	<13i07vnbbosmi49@corp.supernews.com>
Message-ID: <20071025125019.GB1471@gilmour.subvert.org.uk>

On Thu, Oct 25, 2007 at 04:47:51AM -0000, Steven D'Aprano wrote:
> On Wed, 24 Oct 2007 23:08:14 -0500, Shane Geiger wrote:
> 
> > A mailing list manager is really overkill for what he is trying to do
> > *IF* he is not maintaining a discussion list.
> 
> It's not overkill at all. Mailman is easy to install (at least on a Red 
> Hat based Linux system, your mileage may vary elsewhere) and easy to use 
> *and* for bonus marks it's written in Python.

There's very little that Mailman is not overkill for. Running as a
daemon and managing its own queue is completely unneccessary; that's
what the MTA is for.

Enemies of Carlotta is also written in Python, except it's written sanely.

http://liw.iki.fi/liw/eoc/ or 'enemies-of-carlotta' in Debian.

Alternatively, SmartList is written as a set of procmail filters;
available from http://procmail.org/ or 'smartlist' in Debian.

> > A "newsletter" list
> > doesn't sound like a discussion list, especially since he wants to hide
> > the email addresses of the other people.
> 
> There's more to running a mailing list than just sending emails. How do 
> you handle archives, the invariable complaints of missing newsletters, 
> requests for subscriptions, unsubscriptions, and temporary "I'll be on 
> holiday for a month, don't email me until I return" requests? And even if 
> it is not a discussion list, people expect to be able to write back to 
> the author/editor of the newsletter.

Being able to reply to the author/editor is something that has been
possible via email for 25+ years. You don't need a mailing list
manager for it.

-- 
Benjamin A'Lee :: bma at subvert.org.uk
http://subvert.org.uk/~bma/
"It is forbidden to kill; therefore all murderers are punished unless they kill
in large numbers and to the sound of trumpets." - Voltaire
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 194 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/2f097256/attachment.sig>

From python at rcn.com  Tue Oct 23 17:17:14 2007
From: python at rcn.com (Raymond Hettinger)
Date: Tue, 23 Oct 2007 14:17:14 -0700
Subject: Set operations on object attributes question
In-Reply-To: <1193161534.824430.299330@k35g2000prh.googlegroups.com>
References: <1193147226.862501.97240@v23g2000prn.googlegroups.com>
	<1193153970.762375.262430@k35g2000prh.googlegroups.com>
	<1193161534.824430.299330@k35g2000prh.googlegroups.com>
Message-ID: <1193174234.825443.205280@v29g2000prd.googlegroups.com>

[Duane]
> Since what I _really_ wanted from this was the intersection of the
> objects (based on attribute 2), I was looking for a set-based
> solution,
> kinda like a decorate - <set operation> - undecorate pattern. Perhaps
> the problem does not fall into that category.

Decorating and undecorating do not apply to your example.  If all the
input were decorated with new equality and hash methods, then the
intersection step would return just a single element, not the two that
you specified.

Compare this with ints and floats which already have cross-type
equality and hash functions.  Running, set([1]).intersection([1.0]),
would you expect set([1.0]) or set([1, 1.0])?  Your example specified
the latter behavior which has the unexpected result where the
set intersection returns more elements than exist in either input.


Raymond



From beard.mike at gmail.com  Mon Oct  1 09:45:52 2007
From: beard.mike at gmail.com (MikeBeard)
Date: Mon, 01 Oct 2007 13:45:52 -0000
Subject: C Source Code Generator For Test Cases
In-Reply-To: <1191001738.456766.176050@n39g2000hsh.googlegroups.com>
References: <1191001738.456766.176050@n39g2000hsh.googlegroups.com>
Message-ID: <1191246352.203798.200650@n39g2000hsh.googlegroups.com>

On Sep 28, 1:48 pm, gamename <namesagame-use... at yahoo.com> wrote:
> Hi,
>
> Can anyone recommend a good method of using python to generate c
> source code?   I have tables of test cases to use as input to a
> process which would generate the test's source code.  The Cheetah tool
> looks interesting.  Has anyone used it? Any other suggestions?
>
> TIA,
> -T

You might want to look at COG (http://www.nedbatchelder.com/code/
cog/).  It might be helpful to you.  I really enjoy using it and keep
finding things to use it with.

Good luck.

Mike



From duncan.booth at invalid.invalid  Thu Oct  4 16:18:37 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 4 Oct 2007 20:18:37 GMT
Subject: What does the syntax [::-1] really mean?
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
Message-ID: <Xns99BFD8C6B2BF5duncanbooth@127.0.0.1>

Casey <Caseyweb at gmail.com> wrote:

> From this, I would expect that x[::-1] would be identical to x[n:0:-1]
> (n and 0 being the "end" values, with the order switched due to the
> negative step value).  But the clause that "(but never including j)"
> means that x[n:0:-1] excludes the 1st element of x, x[0].  A quick
> test in ipython confirms that "abc"[3:0:-1] => "cb", not "cba".
> Changing the "end" value  to x[n:-1:-1] results in an empty string.
> 
> So my question is: "what exactly is [::-1] shorthand for"?  Or is it a
> special case, in which case why isn't it  defined as such in the
> library?

You made a mistake thinking that the first omitted value maps to 'n': in 
fact it maps to -1.

the invariant that you are looking for is that for all non-negative a, b:
   x[a:b:1] reversed is x[-len(x)+b-1:-len(x)+a-1:-1]

x[::1] is equivalent to x[0:len(x):1]

therefore x[::-1] is the same as:
    x[-len(x)+len(x)-1:-len(x)+0-1:-1]
 which is just:
    x[-1:-len(x)-1:-1]


From _karlo_ at mosor.net  Wed Oct 10 20:17:07 2007
From: _karlo_ at mosor.net (Karlo Lozovina)
Date: Thu, 11 Oct 2007 02:17:07 +0200
Subject: Keeping track of subclasses and instances?
Message-ID: <fejpo9$vm$1@news1.carnet.hr>

Hi,

what's the best way to keep track of user-made subclasses, and instances of
those subclasses? I just need a pointer in a right direction... thanks.

-- 
Karlo Lozovina -- Mosor


From kyosohma at gmail.com  Mon Oct 29 09:04:41 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 29 Oct 2007 13:04:41 -0000
Subject: IEC - cannot find button
In-Reply-To: <1193637535.413630.252960@22g2000hsm.googlegroups.com>
References: <1193637535.413630.252960@22g2000hsm.googlegroups.com>
Message-ID: <1193663081.249282.106150@50g2000hsm.googlegroups.com>

On Oct 29, 12:58 am, daniel_no... at msn.com wrote:
> I'm brand new to Python--and programming in general. I'm trying to use
> IEC to control Internet Explorer. I've navigated to a page, and now
> I'm trying to click a button. The button appears to be called 'PDF
> Preview' but I honestly do not know whether that's the name or the
> caption. Here is my code:
>
>      from win32com.client import Dispatch
>      import IEC
>
>      .
>      .
>      .
>
>      ie = IEC.IEController(window_num = 1)
>      ie.Navigate(URL_part_1 + x + URL_part_2)
>      ie.ClickButton(name='PDF Preview')
>
> (I've also tried replacing name w/ caption but I get a similar error
> message.) I get this error message:
>
> Traceback (most recent call last):
>   File "C:\Program Files\Python25\experiment", line 14, in <module>
>     ie.ClickButton(name='PDF Preview')
>   File "C:\Program Files\Python25\lib\IEC.py", line 126, in
> ClickButton
>     elem = elemcoll.item(i)
>   File "<COMObject <unknown>>", line 3, in item
> com_error: (-2147024891, 'Access is denied.', None, None)
>
> I really have no idea how to interpret this. I'm pasting the button
> tag below:
>
> <td>
>      <input type="button" value="PDF Preview"
> onclick="javascript:performPdfPreview(2);"/>
> </td>

You might want to look at PAMIE instead. It sounds like a Python
project that's aimed at automating Internet Explorer:
http://sourceforge.net/projects/pamie/

But if you really like COM, I found this tutorial:

http://www.evilbitz.com/2006/10/22/python-ie-automation-thorough-tutorial/

I'm not very good with COM, but I would recommend that you do some
research on it. From the traceback, I would guess that you don't have
administrator privileges (of some sort) on the machine you're running
the script on.

Mike



From danielwong at berkeley.edu  Wed Oct 10 18:16:17 2007
From: danielwong at berkeley.edu (danielx)
Date: Wed, 10 Oct 2007 22:16:17 -0000
Subject: Pythonic way for handling file errors
In-Reply-To: <1192044529.831420.86020@57g2000hsv.googlegroups.com>
References: <1192041679.657266.320210@o80g2000hse.googlegroups.com>
	<1192044529.831420.86020@57g2000hsv.googlegroups.com>
Message-ID: <1192054577.892611.35620@o3g2000hsb.googlegroups.com>

On Oct 10, 12:28 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 10, 7:41 pm, wink <w... at saville.com> wrote:
>
> > I would like to know what would be considered the most
> > Pythonic way of handling errors when dealing with files,
> > solutions that seem reasonable using 2.5:
>
> The best way to handle errors is to catch the exceptions that are
> raised by the code that handles the error. Your examples push the
> problem elsewhere: you're setting an error code which has to be tested
> for. But perhaps your application needs to do this for some reason
> (judging from your error codes, this is some sort of web script).
>
> > ...
> > try:
> >    with open('afile', 'r') as f:
> >        content = f.read()
> >    error = 200
> > except Exception:
> >    error = 404
>
> Of all your examples, this is the best. But the catch-all exception
> handler is bad: it's better to catch just file io exceptions. Also, I
> think it's better to put the OK case (error 200) in an else clause to
> make it clearer that it's only set when no error occurs. It's also
> better to use constants in place of magic numbers.
>
> import httplib
>
> try:
>     with open('afile', 'r') as f:
>         content = f.read()
> except IOError:
>     error = httplib.NOT_FOUND
> else:
>     error = httplib.OK
>
> --
> Paul Hankin

Wink,

One of the problems your facing is knowing whether you managed to open
the file before reaching the finally block where you close your file.
To avoid this, I open my files right before try/finally. For me, the
only purpose in having the try/finally is to make sure my files are
properly closed, although when I'm lazy, I just let the file close it
self during garbage collection. This is what it looks like:

file = open('filename')
try:
  # read and/or process file
finally:
  file.close()

Of course, this example does not handle any exceptions. In many cases,
you want these errors to propogate upward so the users of your
functions/methods can decide what needs to be done. On the other hand,
you could wrap this code with try/except/else if you wanted to handle
the exception "at the source".



From tfb+google at tfeb.org  Tue Oct  9 06:00:32 2007
From: tfb+google at tfeb.org (Tim Bradshaw)
Date: Tue, 09 Oct 2007 03:00:32 -0700
Subject: The fundamental concept of continuations
In-Reply-To: <1191911662.983658.79540@g4g2000hsf.googlegroups.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<1191911662.983658.79540@g4g2000hsf.googlegroups.com>
Message-ID: <1191924032.449463.13290@22g2000hsm.googlegroups.com>

On Oct 9, 7:34 am, gnuist... at gmail.com wrote:

> which lambda paper ?

Are you Ilias?  I think you probably are.



From jeffrey at fro.man  Thu Oct  4 16:49:40 2007
From: jeffrey at fro.man (Jeffrey Froman)
Date: Thu, 04 Oct 2007 13:49:40 -0700
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1527.1191525190.2658.python-list@python.org>
Message-ID: <13gakf52n1fv2e2@corp.supernews.com>

Chris Mellon wrote:

> Doctest is commonly given as the alternative to people who feel this
> way. Personally, I find that anything worth testing is worth having a
> test directory and independent unit tests for.

I like keeping my tests separate as well, and doctest does allow this, using
doctest.testfile(). That is, despite the name, doctests do not necessarily
need to appear in docstrings :-)

Jeffrey


From gardsted at yahoo.com  Wed Oct 17 14:44:46 2007
From: gardsted at yahoo.com (gardsted)
Date: Wed, 17 Oct 2007 20:44:46 +0200
Subject: readline support on openSuSE
In-Reply-To: <mailman.124.1192629701.13605.python-list@python.org>
References: <mailman.124.1192629701.13605.python-list@python.org>
Message-ID: <4716581e$0$7604$157c6196@dreader2.cybercity.dk>

Milos Prudek wrote:
> This question concerns compilation of Python from sources. Specifically Python 
> 2.3.6.
> 
> On Kubuntu 7.04, ./configure outputs these lines about readline:
> checking for rl_pre_input_hook in -lreadline... yes
> checking for rl_completion_matches in -lreadline... yes
> 
> On openSuSE 10.3, ./configure outputs these lines about readline:
> checking for rl_pre_input_hook in -lreadline... no
> checking for rl_completion_matches in -lreadline... no
> 
> And, of course, line editing in Python shell is possible on Kubuntu and 
> impossible on openSuSE.
> 
> I do have libreadline5 and readline-devel RPM installed on openSuSE. What else 
> might I need to have readline support?
> 
This is not an answer but

I have 10.3 installed, and I found that a lot of my (not python-) compiling troubles went away after installing 'a lot' from the 
development patterns presented by yast.
I am so demented that I tend not to get the dependencies straight when installing from the 'personal memory';-)

kind retards
jorgen / de mente

something completely different:
myspace.com/dementedk


From martin at marcher.name  Tue Oct 23 04:38:57 2007
From: martin at marcher.name (Martin Marcher)
Date: Tue, 23 Oct 2007 10:38:57 +0200
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<471BBD55.9030601@v.loewis.de>
	<496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
Message-ID: <5fa6c12e0710230138v16f159e2lcdf6a77aca974080@mail.gmail.com>

2007/10/21, Robert Dailey <rcdailey at gmail.com>:
> On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
> > No, I literally meant that the Python C API is object-oriented.
> > You don't need an object-oriented language to write object-oriented
> > code.
>
> I disagree with this statement. C is not an object oriented language,
> and I've seen attempts to make it somewhat object oriented, however it
> failed miserably in readability and manageability overhead.

just FYI. What about the linux kernel? It's (in large parts) perfectly
designed by OO principles (the vfs for example). And I can't remember
that it was written in C++.

Make a struct with some funtion pointers in it and you are at a basic
OO level. the pointers could then manipulate the variables in the
struct (remember a C++ struct ist just a class with all things being
public).

How does that differ from python? - I can't remember having visibility
modifiers in python.... (so that would lead to that python isn't
object oriented as any programmer could at any time directly
manipulate any method/variable/whatsoever of your classes)


-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours

From bj_666 at gmx.net  Sat Oct 27 08:58:31 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 27 Oct 2007 12:58:31 GMT
Subject: simple question on dictionary usage
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<472327af$0$31482$426a74cc@news.free.fr>
	<1193487810.194444.277900@o38g2000hse.googlegroups.com>
Message-ID: <5ogqvnFmgu6mU2@mid.uni-berlin.de>

On Sat, 27 Oct 2007 05:23:30 -0700, bearophileHUGS wrote:

> My take too :-)
> 
> dict(item for item in record.iteritems() if item[0][0] == 'E')

``s.startswith('E')`` is a little safer than ``s[0] == 'E'`` as the former
returns `False` if `s` is empty while the latter raises an `IndexError`.

Ciao,
	Marc 'BlackJack' Rintsch


From nytrokiss at gmail.com  Thu Oct 11 15:30:55 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Thu, 11 Oct 2007 12:30:55 -0700
Subject: Library for crawling forums
In-Reply-To: <1192130023.125026.271530@r29g2000hsg.googlegroups.com>
References: <1192130023.125026.271530@r29g2000hsg.googlegroups.com>
Message-ID: <8a6b8e350710111230v91bdf6fsb56088bfa6175433@mail.gmail.com>

Well i know some that do half the job

urllib or urllib2 to download the page
htmlparser or beautifulsoup For html parsing

Enjoy

On 10/11/07, BlueCrux <azureenigma at gmail.com> wrote:
>
> I'm trying to write a utility to crawl forums and strip posts to be
> gone through offline. Just the content, I don't need to get who posted
> or sigs or any identifying info.
>
> Can anyone suggest a library that is already geared toward this?
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
http://search.goldwatches.com/search.aspx?Search=Cufflinks
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071011/43038a4d/attachment.html>

From zaz600 at gmail.com  Thu Oct 25 02:28:16 2007
From: zaz600 at gmail.com (NoName)
Date: Thu, 25 Oct 2007 06:28:16 -0000
Subject: about functions question
Message-ID: <1193293696.450188.108330@q3g2000prf.googlegroups.com>

I try it:

def b():
  ...
  a()
  ...

def a():
  ...
  b()
  ...

b()
it's not work.

Is it possible pre-define function like in c++ or place functions code
after main block?

int a();
int b();

int main ()
{
...
a();
...
}

int a()
{
...
b();
...
}

int b()
{
...
a();
...
}

=) sorry for my eng;)



From mahs at telcopartners.com  Thu Oct  4 19:35:35 2007
From: mahs at telcopartners.com (Michael Spencer)
Date: Thu, 04 Oct 2007 16:35:35 -0700
Subject: Dynamically creating class properties
In-Reply-To: <fe3jv0$lnc$1@news1.carnet.hr>
References: <fe3jv0$lnc$1@news1.carnet.hr>
Message-ID: <fe3tc8$feh$1@sea.gmane.org>

Karlo Lozovina wrote:

> 
> Any idea how to do that with metaclasses and arbitrary long list of 
> attributes? I just started working with them, and it's driving me nuts :).
> 
> Thanks for the help,
> best regards.
> 
Try implementing a property factory function before worrying about the 
metaclass.  Assuming you need a standard getter and setter, then the following 
(untested) example may be useful.  If you need custom get/set behavior then you 
would rewrite the factory to accept passed-in functions.

  >>> def make_data_property(cls, prop_name):
  ...
  ...     # create default methods that get and set a 'private' instance
  ...     # attribute
  ...     def _set(self, value):
  ...         setattr(self, "_%s" % prop_name, value)
  ...     def _get(self):
  ...         # None is default.  Alternatively handle AttributeError
  ...         return getattr(self, "_%s" % prop_name, None)
  ...
  ...     setattr(cls, prop_name, property(_get, _set))
  ...
  ...     # optionally, fix the internal names of the _get and _set for better
  ...     # introspection
  ...     _set.func_name = setname = "set%s" % prop_name
  ...     _get.func_name = getname = "get%s" % prop_name
  ...
  ...     # optionally, make _get and _set members of the class, if you want to
  ...     # call them directly (but then, why have the property?)
  ...     setattr(cls, setname, _set)
  ...     setattr(cls, getname, _get)
  ...
  >>> class A(object):
  ...     pass
  ...
  >>> a=A()
  >>> a.item1
  Traceback (most recent call last):
    File "<input>", line 1, in <module>
  AttributeError: 'A' object has no attribute 'item1'
  >>> make_data_property(A,"item1")
  >>> a.item1
  >>> a.item1 = 42
  >>> a.item1
  42
  >>> make_data_property(A,"item2")
  >>> a.item2
  >>> a.item2 = 43
  >>>
  >>> a.item2
  43
  >>>

If you can get this piece working, then multiple attributes should be easy. 
Then, if you like, you can call your property factory from the metaclass 
__init__ method.

HTH
Michael



From sjmachin at lexicon.net  Wed Oct 17 21:40:32 2007
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 18 Oct 2007 11:40:32 +1000
Subject: Pull Last 3 Months
In-Reply-To: <87zlyhz2fd.fsf@benfinney.id.au>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
	<1192665202.277171.132880@t8g2000prg.googlegroups.com>
	<87zlyhz2fd.fsf@benfinney.id.au>
Message-ID: <4716b996@news.eftel.com.au>

On 18/10/2007 10:33 AM, Ben Finney wrote:
> Paul Hankin <paul.hankin at gmail.com> writes:
> 
>> import datetime
>>
>> months = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split()
>>
>> def last_months(n):
>>     month = datetime.date.today().month
>>     return [months[(month - i - 1) % 12] for i in range(n)]
>>
>> print last_months(3)
> 
> Heck you don't even need the magic number 12 in there.
> 
>     import datetime
> 
>     months = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split()

Heck if you really want to be anal, you could even guard against a typo 
(or one of those spaces actually being '\xA0' [seen it happen]) by 
adding in here:
       MONTHS_IN_YEAR = 12
       assert len(months) == MONTHS_IN_YEAR

>     def last_months(n):
>         month = datetime.date.today().month
>         return [months[(month - i - 1) % len(months)
>                 for i in range(n)]
> 
> In general I try to avoid magic numbers: always be explicit about the
> semantic purpose of the number, either by binding a meaningful name to
> it and only using that reference thereafter, or showing how that value
> is derived.
> 

It's a bit hard to see how anybody could imagine that in the expression
     [months[(month - i - 1) % 12] for i in range(n)]
the number 12 referred to anything but the number of months in a year.


From sgifford at suspectclass.com  Mon Oct  1 13:28:07 2007
From: sgifford at suspectclass.com (Scott Gifford)
Date: Mon, 01 Oct 2007 13:28:07 -0400
Subject: which language allows you to change an argument's value?
References: <1191149233.346818.246170@22g2000hsm.googlegroups.com>
Message-ID: <lysl4ug2xk.fsf@gfn.org>

Summercool <Summercoolness at gmail.com> writes:

> I wonder which language allows you to change an argument's value?

[...]

> What about Java and Perl?

Perl will let you change the value of a passed-in object directly.
Others have already answered about Java.

> is there any way to prevent a function from changing the argument's
> value?

Make a copy of the object, and pass in the copy.

Without making a copy, of the languages I know, C++ comes closest to
supporting an unmodifiable argument passed by reference.  Using a
const reference or const pointer indicates that the reference won't be
changed, but even that can be subverted by the function's author with
casting.

-----Scott.


From pydecker at gmail.com  Sun Oct 28 10:05:14 2007
From: pydecker at gmail.com (Peter Decker)
Date: Sun, 28 Oct 2007 10:05:14 -0400
Subject: Need some help...
In-Reply-To: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
References: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
Message-ID: <ca55a9900710280705y13602fa5qbcbf75353b69f708@mail.gmail.com>

On 10/28/07, hyozan.ux3 at gmail.com <hyozan.ux3 at gmail.com> wrote:

> I want to then have those numbers
> 13+4+1+7+5 added together to be 30.
>
> How can I do that?
>
> Also, just curious, but, how could I then have the 3 and 0 added
> together to be 3?
>
> Please help me out.

Will you put our names on your homework when you hand it in?

-- 

# p.d.


From Graham.Dumpleton at gmail.com  Thu Oct 25 18:44:46 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Thu, 25 Oct 2007 22:44:46 -0000
Subject: sys.path not properly initialized (was:
	PyImport_ImportModule/embedding: surprising behaviors)
In-Reply-To: <mailman.460.1193345600.13605.python-list@python.org>
References: <mailman.5359.1174435375.32031.python-list@python.org>
	<1174767636.080416.74740@n59g2000hsh.googlegroups.com>
	<mailman.460.1193345600.13605.python-list@python.org>
Message-ID: <1193352286.069324.151930@q5g2000prf.googlegroups.com>

On Oct 26, 6:53 am, David Abrahams <d... at boost-consulting.com> wrote:
> > David Abrahams wrote:
> >> I'm seeing highly surprising (and different!) behaviors of
> >> PyImport_ImportModule on Linux and Windows when used in a program with
> >> python embedding.
>
> >> On Linux, ...
>
> <Linux working OK now>
>
> Unfortunately, nothing you have written below or on the pages you
> reference seems to help in Windows.  Here's a simple program that
> demonstrates:
>
>  import.c
> 1KDownload
>
>   'import site' failed; use -v for traceback
>   Traceback (most recent call last):
>     File "<string>", line 1, in <module>
>   ImportError: __import__ not found
>
> >> I can work around the problem by setting PYTHONPATH to point to the
> >> python library directory:
>
> >>   set PYTHONPATH=c:\Python25\Lib
>
> > This happens because Python calculates the initial import path by
> > looking for an executable file named "python" along PATH.
>
> C:\Python25, which contains python.exe, is in the PATH.  If it's
> really looking for an executable named "python" along PATH, that can
> never succeed on Windows, since (I think) only files ending in .exe,
> .bat, and .cmd are executable there.
>
> > You can
> > change this by calling Py_SetProgramName(filename) before calling
> > Py_Initialize(). This is documented in API reference manual:
>
> Uncomment that line in my program above and you'll see it makes
> absolutely no difference.
>
> >http://docs.python.org/api/embedding.html
>
> > That page also describes a few hooks that you can overwrite to
> > modify the initial search path. They are described in more detail
> > on this page:
>
> >http://docs.python.org/api/initialization.html
>
> The only thing mentioned there that seems to have any effect at all is
>
>   set PYTHONHOME=C:\Python25
>
> and even then, it only eliminates the first line of the error, which
> then reads:
>
>   Traceback (most recent call last):
>     File "<string>", line 1, in <module>
>   ImportError: __import__ not found
>
> My only known workaround is to set PYTHONPATH.  This just doesn't seem
> right; isn't anyone doing embedding under Windows?

The problem with not finding site.py on Windows will often come up
when you have gone through a cycle of installing/removing different
versions of Python and the registry entries get mucked. Also can be a
problem where Python was not installed as administrator originally and
now trying to run stuff as user different to what Python was installed
as. A lot of the time problems go away by deinstalling Python and
reinstalling as administrator. Also watch out for where you have some
third party application which provides its own version of Python and
that version or its DLL is being found first in your PATH.

Graham




From barronmo at gmail.com  Tue Oct 30 20:39:48 2007
From: barronmo at gmail.com (barronmo)
Date: Wed, 31 Oct 2007 00:39:48 -0000
Subject: choose from a list
In-Reply-To: <1193785411.032673.147860@v3g2000hsg.googlegroups.com>
References: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
	<1193770225.374384.52290@k79g2000hse.googlegroups.com>
	<1193782113.429067.132740@57g2000hsv.googlegroups.com>
	<1193785411.032673.147860@v3g2000hsg.googlegroups.com>
Message-ID: <1193791188.338141.123020@v3g2000hsg.googlegroups.com>

I didn't know "result" was a list!  Can all that info be stored in a
list?  How do the columns work?  I was curious to see what the data
looked like but I can't seem to print "result" from the prompt.  Do
variables used inside functions live or die once the function
executes?  If they die, how do I get around this?  I tried defining 'r
= ""' in the module before the function and then using it instead of
"result" but that didn't help.

Mike




From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 15 10:14:31 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 15 Oct 2007 14:14:31 -0000
Subject: Newbi Q: Recursively reverse lists but NOT strings?
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
	<mailman.16.1192446949.13605.python-list@python.org>
	<13h6nlmd8aku2ea@corp.supernews.com>
	<mailman.17.1192452456.13605.python-list@python.org>
Message-ID: <13h6te7sk7iun42@corp.supernews.com>

On Mon, 15 Oct 2007 14:47:30 +0200, Francesco Guerrieri wrote:

>> def myreversed(sequence):
>>     if isinstance(sequence, basestring):
>>         return type(sequence)().join(reversed(sequence))
>>     else:
>>         return type(sequence)(reversed(sequence))
>>
>> (in fact, that's so simple I wonder why the built-in reversed() doesn't
>> do that).
> 
> simple:
> In the face of ambiguity, refuse the temptation to guess.

What ambiguity? What guess? The above is completely unambiguous: it 
returns a sequence of the same type as the input. It doesn't support 
xrange objects, but that's not really a great loss.



-- 
Steven.


From zaxfuuq at invalid.net  Sun Oct 21 08:01:45 2007
From: zaxfuuq at invalid.net (Wade Ward)
Date: Sun, 21 Oct 2007 05:01:45 -0700
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
References: <47133159.9010204@acm.org>
	<1192920380.625668.221960@i13g2000prf.googlegroups.com>
	<1192954949.817248.242120@y27g2000pre.googlegroups.com>
	<471b2ef9$0$5050$39db0f71@news.song.fi>
Message-ID: <X5idnQl3aPoIrIbanZ2dnUVZ_oSnnZ2d@comcast.com>




"Veli-Matti" <veli-matti.jantunen at netsonic.fi> wrote in message 
news:471b2ef9$0$5050$39db0f71 at news.song.fi...
> Gosi wrote:
> ..
>> I can not use the APL character set at all.
>> It is too mixed up with my national characters.
>
> What about a unicode version of APL?
>
> Honestly, I cannot use J because it mixes with all
> the characters I use... ;)
> -Veli-Matti

what the fuck ever.

Re:Attention, Sir/Madam

This Is To Officially Inform You That We Have Verified Your
ontract/Inheritance
File And Discovered Reasons Why You Are Yet To Receive Your Payment. It Is
Because Of Irregularities And Complications Discovered On Your Payment File 
By
Our Technical Experts In Respect To Your Contract /Inheritance Payment
Requirements Which Have Just Been Duly Rectified.

Meanwhile, We Have Been Informed That You Are Still Dealing With Impostors 
And
Non Recommended Officials In The Bank. Such Acts Must Stop For
Security Reasons
If You Wish To receive Your Payment.

Since We Have Decided To Bring A Solution To Your Problem, Right Now We Have
Arranged Your Payment Through Our ATM Swift Card Payment Center OCEANIC BANK
INTERNATIONAL PLC ( Under Reserve Bank Operation Act 2005 ), That Is
The Latest
Instruction By Our President Chief,Umaru Musa Yar Adua (GCFR) Federal 
Republic
Of Nigeria. Below Is The Arrangements ;...

You are advised to contact our accredited payment office via the contact
information provided below for immediate payment to you.

Dr James Smith.
Oceanic Bank International Plc.
802 Ozumba Mbadiwe Close, Lagos, NIGERIA.
Direct Phone number: +234-802-712-7674
Email:  info_atmpaymentcenter at mybestmail.com

The Swift card Center Will Send You An ATM Card Which You Will Use To 
Withdrew
Your Money From Any ATM Machine In Any Part Of The World, But The Maximum Is
Six Thousand Dollars Per Day, So If You Like To Receive Your Fund This Way
Please Do Let Us Know By getting back to us ASAP with this

information's stated below:

1) Your full name.
2) Phone, fax and mobile #.
3) Profession, age and marital status.
4) Copy of Drivers License I .D.
5) Amount of fund that you are expecting
6) Address Where You Want Them To Send The Card Through Diplomatic Courier

Please Indicate To The Card Center The Total Sum You Are Expecting And
For Your
Information You Have To Stop Any Further Communication With Any Institution 
Or
Office Until You Receive The ATM Card.

Note: Because of Impostors, We Hereby Issue You Our Code of Conduct Tag 
Number
Which Is(805) So You Must Have To Indicate This Code When Contacting The 
Card
Center.We Await Your Urgent Response.

Mr. Anthony Eke

Special Adviser To The President
Federal Republic Of Nigeria
Phone +234-703-096-5403

f'up set.
-- 
wade ward
wade at zaxfuuq.net
"Der Katze tritt die Treppe hoch;  Der Kater tritt sie krumm.%
% De Teufel geit um; er bringt der menschen allet dummer."
schau, schauer 




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sat Oct  6 09:13:05 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sat, 06 Oct 2007 15:13:05 +0200
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
Message-ID: <470789c2$0$28579$426a74cc@news.free.fr>

Michele Simionato a ?crit :
> At work we are shopping for a Web framework, so I have been looking at
> the available options
> on the current market. In particular I have looked at Paste and Pylons
> and I have written my
> impressions here:
> 
> http://www.phyast.pitt.edu/~micheles/python/yet-another-comparison-of-web-frameworks.html
> 
> I do not speak too well of Pylons, so if you thing I am wrong feel
> free to correct me here ;)
> 

Well... Last year, I had a look at Pylons, then played a bit with wsgi 
and building my own framework over it. I finally dropped that code and 
went back to Pylons, which I felt could become far better than my own 
efforts. Now since then I had way too much to do at work (using other 
technos) and didn't find the time to work on my own projects, so I still 
don't know how well Pylons will pass the "real world" test, but it seems 
to me that it's rapidly progressing and mostly in the right direction. I 
still wait for an opportunity to check this out !-)

While we're at it:

- talking about routes, you say:

"""
I have no Ruby On Rails background, so I don't see the advantages of routes.
"""

I don't have any RoR neither, but as far as I'm concerned, one of the 
big points with routes is url_for(), that avoids having too much 
hard-coded urls.

- about FormEncode : that's a package I've used before without Pylons, 
and while it has a few dark corners, it's mostly doing TheRightThing for 
most current validation/conversion tasks. I'll still use it with or 
without Pylons

- about SQLAlchemy : here again, I used this package prior any 
experience with Pylons. FWIW, I used it in the most basic, 'low-level' 
way, ie without any ORM stuff, and I found it to be a pretty good 
alternative to db-api. It's a bit complex, but powerful, and having the 
possibility to handle sql requests as Python objects (instead of raw 
strings) really helps.


From gagsl-py2 at yahoo.com.ar  Sun Oct 21 15:42:05 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 21 Oct 2007 16:42:05 -0300
Subject: Problem with format string / MySQL cursor
References: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
	<1192736676.035569.188300@e9g2000prf.googlegroups.com>
	<mailman.189.1192738097.13605.python-list@python.org>
	<1192740053.589994.109050@q5g2000prf.googlegroups.com>
	<13hgqs4fdq7h76e@corp.supernews.com>
	<mailman.227.1192830637.13605.python-list@python.org>
	<13hktelmt556eb5@corp.supernews.com>
Message-ID: <op.t0kbofpxx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sat, 20 Oct 2007 18:40:38 -0300, Dennis Lee Bieber  
<wlfraed at ix.netcom.com> escribi?:

> On Fri, 19 Oct 2007 18:50:20 -0300, "Gabriel Genellina"
> <gagsl-py2 at yahoo.com.ar> declaimed the following in comp.lang.python:

>> If the MySQLdb adapter actually converts and inserts the arguments  
>> itself
>> into the supplied SQL sentence, generating a new string for each call,
>> this advantage -and many others- are cancelled, defeating the purpose of
>> bound variables.
>
> 	Okay, I'm a bit behind the time... The book I keep on the floor next
> to my computer is the old brown/black version covering version 3.x and
> introducing ver 4.0 (my newer books are across the room in shelves
> behind the couch that take time to reach)
>
> 	It can't be fully blamed on the MySQLdb adapter... After crawling
> through too many reference books, it looks like MySQL itself didn't
> support "prepared statements" until sometime in the ver 4.1.x period --
> I believe the MySQLdb adapter is still ver 3.x compatible, using the
> mysql_query(connection, SQL_string) call, rather than the half-dozen
> newer functions for separately binding parameters to prepared
> statements.

Yes, if the database doesn't allow for prepared statements the poor  
adapter can't do much...

> 	Since, to my experience, db-api 2 doesn't expose the concepts of
> prepared statements to the user, about the only place using them would
> offer a true speed-up would be in the .executemany() call (and even then
> it would seem to depend upon which is more costly: formatting a properly  
> [...]

Some databases automatically cache SQL statements. I know DB2 does that,  
and I think Oracle does too (or is it the JDBC layer?). So it's not  
required that user code explicitely prepares SQL statements.
Prepared statements have other advantages, apart from the speed gain when  
using repetitive queries: they help to keep the statement length below  
some size limit, they help to lower the cpu load on the server (by not  
having to parse and optimize the query again), and they avoid SQL  
injection (else, you have to rely on the quoting and escaping being well  
done, even on the DB-API adapter).

> 	If the api exposed them to the user, I could see a potential use for
> them: an application with, say, multiple forms (each of one or more DB
> tables)... By preparing and saving a set of statements for each form
> (parameterized select, update, insert, delete, say) during application
> startup (or conditionally on first entry to a form) one would only need
> to reference the prepared statements for the forms as the end-user
> navigates the forms.

But DB-API 2.0 already allows that. PEP 249 says, when describing  
cursor.execute:

             "A reference to the operation will be retained by the
             cursor.  If the same operation object is passed in again,
             then the cursor can optimize its behavior.  This is most
             effective for algorithms where the same operation is used,
             but different parameters are bound to it (many times)."

So nothing special is required to enable prepared statements; the adapter  
is free to prepare and re-use queries if desired.
BTW, the situation is similar to the re module: you can pre-compile your  
regular expressions, but it's not required, as the re module caches  
compiled expressions, reusing them later when the same r.e. is seen.

> {At least we're not discussing Firebird... 1000+ page book on it and the
> closest it comes to discussing a C-language API is to mention that the C
> header file defining the functions is included with the binary
> install... And for other APIs it just gives URLs}

Nice book! :)

-- 
Gabriel Genellina



From mensanator at aol.com  Tue Oct  9 13:31:38 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 09 Oct 2007 10:31:38 -0700
Subject: pytz has so many timezones!
In-Reply-To: <13gmd5hjk5chi4f@corp.supernews.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<13gmd5hjk5chi4f@corp.supernews.com>
Message-ID: <1191951098.067501.37490@y42g2000hsy.googlegroups.com>

On Oct 9, 2:58 am, Dennis Lee Bieber <wlfr... at ix.netcom.com> wrote:
> On Mon, 08 Oct 2007 10:41:03 -0700, "mensana... at aol.com"
> <mensana... at aol.com> declaimed the following in comp.lang.python:
>
>
>
> > There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> > +12.
>
>         Uhm... -12 and +12 would be the same, wouldn't they?

No, they are seperated by the International Date Line,
so although zones -12 & +12 have the same clock time, they
are different dates.

>
>         There are only 24 divisions 15deg wide in longitude, 7.5deg to each
> size of zone center, and Greenwich is center of 0...

And zones -12 & +12 are each nominally 7.5deg wide,
so 23*15 + 2*7.5 gives you 25 zones spanning 360deg.

>
>         However, consider that the former Soviet Union is reputed to have
> used only ONE timezone for the entire width of the country (sunrise at
> 6AM say in Moscow would be near sunset on the east coast)

When was this, in the days before air travel when it took
3 weeks to cross Siberia by train?

>
>         So while there are only 24 hourly offsets, there can be many "zones"
> to reflect variations in daylight time changes or non-standard
> offsets...

The point I was trying to make is that although there may
be 400 zones, there aren't 400 offsets. And aren't these
offsets part of the timezone record?

> --
>         Wulfraed        Dennis Lee Bieber               KD6MOG
>         wlfr... at ix.netcom.com             wulfr... at bestiaria.com
>                 HTTP://wlfraed.home.netcom.com/
>         (Bestiaria Support Staff:               web-a... at bestiaria.com)
>                 HTTP://www.bestiaria.com/




From deets at nospam.web.de  Sat Oct 27 12:19:52 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 27 Oct 2007 18:19:52 +0200
Subject: how to creating html files with python
In-Reply-To: <mailman.511.1193501565.13605.python-list@python.org>
References: <mailman.511.1193501565.13605.python-list@python.org>
Message-ID: <5oh6pqFmmgjrU2@mid.uni-berlin.de>

krishnakant Mane schrieb:
> hello,
> I have one strange requirement,
> I need to create html files through python and add some data from the database.
> it is a GUI based application developed in WX python.
> and the reports need to come out in html for some strange reason which
> is off topic to discuss here.
> but the point is that how do I do it?
> should I create a normal file object and write the html with the data

Essentially, yes.

> into it or are there some modules to do it?


There are a bazillion templating systems out there. Beginning with 
python's own string interpolation, to

KID, genshi, Mako, tenjin, cheeta, ... <continue>

Search this NG for python templating engines, and you'd be overwhelmed 
by the answers.

Happy chosing your evil,

Diez


From vinay_sajip at yahoo.co.uk  Fri Oct  5 07:15:57 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Fri, 05 Oct 2007 04:15:57 -0700
Subject: Version 0.3.7 of the config module has been released
Message-ID: <mailman.1584.1191595538.2658.python-announce-list@python.org>

Version 0.3.7 of the Python config module has been released.

What Does It Do?
================
The config module allows you to implement a hierarchical configuration
scheme with support for mappings and sequences, cross-references
between one part of the configuration and another, the ability to
flexibly access real Python objects, facilities for configurations to
include and cross-reference one another, simple expression evaluation
and the ability to change, save, cascade and merge configurations. You
can easily integrate with command line options using optparse.

This module has been developed on python 2.3 but should work on
version 2.2 or greater. A test suite using unittest is included in the
distribution.

A very simple configuration file (simple.cfg):

# starts here
message: Hello, world!
#ends here

a very simple program to use it:

from config import Config

cfg = Config(file('simple.cfg'))
print cfg.message

results in:

Hello, world!

Configuration files are key-value pairs, but the values can be
containers that contain further values.

A simple example - with the example configuration file:

messages:
[
  {
    stream : `sys.stderr`
    message: 'Welcome'
    name: 'Harry'
  }
  {
    stream : `sys.stdout`
    message: 'Welkom'
    name: 'Ruud'
  }
  {
    stream : $messages[0].stream
    message: 'Bienvenue'
    name: Yves
  }
]

a program to read the configuration would be:

from config import Config

f = file('simple.cfg')
cfg = Config(f)
for m in cfg.messages:
    s = '%s, %s' % (m.message, m.name)
    try:
        print >> m.stream, s
    except IOError, e:
        print e

which, when run, would yield the console output:

Welcome, Harry
Welkom, Ruud
Bienvenue, Yves

The above example just scratches the surface. There's more information
about this module available at

http://www.red-dove.com/python_config.html

Comprehensive API documentation is available at

http://www.red-dove.com/config/index.html

As always, your feedback is most welcome (especially bug reports,
patches and suggestions for improvement). Enjoy!

Cheers

Vinay Sajip
Red Dove Consultants Ltd.

Changes since the last release posted on comp.lang.python[.announce]:
=====================================================
Added Mapping.__delitem__ (patch by John Drummond).
Mapping.__getattribute__ no longer returns "" when asked
for "__class__" - doing so causes pickle to crash
(reported by Jamila Gunawardena).
Allow negative numbers (reported by Gary Schoep; had
already been fixed but not yet released).



From mail at microcorp.co.za  Sun Oct 21 02:33:48 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sun, 21 Oct 2007 08:33:48 +0200
Subject: what is the difference between the two kinds of brackets?
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
	<1192898800.059965.272700@q3g2000prf.googlegroups.com>
Message-ID: <009901c813ac$57236820$03000080@hendrik>

"Paul Hankin" <pa....mail.com> wrote:

> If everything else is equal, use tuples.

Interesting point of view - mine is just the opposite.

I wonder if its the philosophical difference between:

"Anything not expressly allowed is forbidden"

and

"Anything not expressly forbidden is allowed"  ?

- Hendrik



From Michael.J.Fromberger at Clothing.Dartmouth.EDU  Mon Oct 22 13:40:36 2007
From: Michael.J.Fromberger at Clothing.Dartmouth.EDU (Michael J. Fromberger)
Date: Mon, 22 Oct 2007 13:40:36 -0400
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <Michael.J.Fromberger-241B96.13403622102007@localhost>

In article <1193055966.362489.252080 at v29g2000prd.googlegroups.com>,
 Py-Fun <lorna.burns at gmail.com> wrote:

> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.


Well, first think about the recursive implementation:

  def fact(n):
    if n > 0:
      return n * fact(n - 1)
    else:
      return 1

To turn this into an iterative computation, you must first get rid of 
the deferred operations -- in this case, the multiplication step after 
the recursive call to fact(n - 1).  

Since multiplication commutes, we can re-write this recursion to keep an 
accumulating parameter instead of deferring the operation:

  def fact2(n, acc = 1):
    if n > 0:
      return fact2(n - 1, acc * n)
    else:
      return acc

This is a little bit better, because now the recursive call is in tail 
position, and so in principle no state needs to be saved across 
recursive calls:  Once the inner call to fact2 is complete, its value is 
simply returned.  But we're not done yet, because Python _does_ save 
state across recursive calls, even in this construction.

By a gentle twist of perspective, the inner call to "fact2(n - 1, acc * 
n)" is really just a kind of "jump" back to the beginning of the 
function.  In another (hypothetical) language, you might write it like 
this:

  # Not legal Python code.
  def fact3(n, acc = 1):
    TOP: 
      if n > 0
        n = n - 1
        acc = acc * n
        goto TOP
      else:
        return acc

Naturally, of course, Python does not provide a "goto" statement.  But 
it does have one that's similar:

  while TEST: BODY

is equivalent in meaning to the pseudo-code:

  X: if TEST: 
       BODY  
       goto X

Can you now see how you would re-write "fact3" into legal Python code,
using this equivalence?  Once you have done so, you will also be able to
get rid of the extra accumulating parameter, and then you will have what 
you wanted.

I hope this helps.

Cheers,
-M

-- 
Michael J. Fromberger             | Lecturer, Dept. of Computer Science
http://www.dartmouth.edu/~sting/  | Dartmouth College, Hanover, NH, USA


From arkanes at gmail.com  Wed Oct  3 14:44:56 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 3 Oct 2007 13:44:56 -0500
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191435649.384615.51680@n39g2000hsh.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<13g5uvh698l9h1c@corp.supernews.com>
	<mailman.1462.1191425446.2658.python-list@python.org>
	<13g7irlht5ruj3a@corp.supernews.com>
	<mailman.1469.1191433159.2658.python-list@python.org>
	<1191435649.384615.51680@n39g2000hsh.googlegroups.com>
Message-ID: <4866bea60710031144w5cfafbfdo115e40327acd8144@mail.gmail.com>

On 10/3/07, bramble <cadet.bramble at gmail.com> wrote:
> On Oct 3, 1:39 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> > On 10/3/07, Grant Edwards <gra... at visi.com> wrote:
> >
> > > On 2007-10-03, Chris Mellon <arka... at gmail.com> wrote:
> > > > On 10/2/07, Grant Edwards <gra... at visi.com> wrote:
> > > >> On 2007-10-02, Chris Mellon <arka... at gmail.com> wrote:
> >
> > > >> > PyGtk has poor cross platform support, a very large footprint (the
> > > >> > largest of all these libraries)
> >
> > > >> It's larger than wxWidgets on top of Gtk?
> >
> > > > No, but it's larger than wx on top of the native API,
> >
> > > A moot point for X11.
> >
> > wxWidgets actually does have a raw X11 implementation,
>
> Wait though. If I want to use wxPython, my python code calls wxWidgets
> code which calls gtk. So, it would seem simpler to remove 1 layer and
> just call the gtk code directly via PyGTK.
>

By the same argument, you could say that Gtk just calls xlib, so why
not write against xlib directly? More direct is not always simpler.
But the real reason, of course, is that wxWidgets is a platform
abstraction API, and Gtk isn't.

Anyway, this discussion isn't about the relative merits of wxWidgets
and PyGtk in general, but specifically for inclusion in the standard
library.

> >
> > > > so when you average it across all platforms it's quite a bit
> > > > larger.
> >
> > > I guess that's one of the costs of portability.
> >
> > Eh? The point is that wxWidgets, the more portable toolkit, is
> > *smaller* than Gtk. It's not really related to portability as much as
> > design considerations.
>
> Isn't wxWidgets smaller that GTK+ simply because it's a wrapper and
> doesn't do its own drawing?
>

Not really, no. Qt also does all of its own drawing and is a fraction
of the size of Gtk. The amount of code thats responsible for drawing
is minuscule.

> --
> http://mail.python.org/mailman/listinfo/python-list
>


From http  Fri Oct  5 16:09:51 2007
From: http (Paul Rubin)
Date: 05 Oct 2007 13:09:51 -0700
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<1191604175.903042.228140@g4g2000hsf.googlegroups.com>
Message-ID: <7x3awpl3w0.fsf@ruckus.brouhaha.com>

7stud <bbxx789_05ss at yahoo.com> writes:
> What are some strategies for unit testing a function that obtains user
> input?

For example: http://en.wikipedia.org/wiki/Expect


From kyosohma at gmail.com  Tue Oct  2 09:06:22 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 02 Oct 2007 13:06:22 -0000
Subject: Creating a custom python python distribution
In-Reply-To: <1191208680.221428.11880@50g2000hsm.googlegroups.com>
References: <1191208680.221428.11880@50g2000hsm.googlegroups.com>
Message-ID: <1191330382.346531.224590@19g2000hsx.googlegroups.com>

On Sep 30, 10:18 pm, shailesh <shaile... at gmail.com> wrote:
> Hi,
> I wish to create a Python distribution includind Python and some other
> libraries (Zope 3, PyWin32, numpy, lxml, etc.) which are required for
> my applications. e.g. there are Enthough and ASPN distributions of
> Python.
>
> Unfortunately, I have not been able to find the right documentation
> for this purpose.
>
> Could some one give an overview of what needs to be done for this
> purpose?
>
> With regards,
>  -Shailesh

Are you wanting to create an executable or what? There are a few
different ways to distribute your work. You can use py2exe, GUI2exe (a
py2exe wrapper), PyInstaller, Distutils or Python Eggs.

Here are some links:

http://pyinstaller.python-hosting.com/
http://www.py2exe.org/
http://xoomer.alice.it/infinity77/main/GUI2Exe.html
http://docs.python.org/dist/dist.html
http://peak.telecommunity.com/DevCenter/PythonEggs

That should get you started.

Mike



From gagsl-py2 at yahoo.com.ar  Fri Oct 19 20:22:47 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 21:22:47 -0300
Subject: __main__ : What is this?
References: <496954360710191629x3fc82871s334f15c2d5a48530@mail.gmail.com>
Message-ID: <op.t0gzb9ebx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 20:29:03 -0300, Robert Dailey <rcdailey at gmail.com>  
escribi?:

> I've read various portions of the Python 2.5 documentation in an
> attempt to figure out exactly what the following condition represents:
>
> if __name__ == "__main__":
>     main()
>
> However, I was not able to determine what it is actually checking for.
> Could someone point me in the way of a tutorial or explain this for
> me? Thanks.

You won't find it (easily) on the 2.5 docs, but it's covered in the  
upcoming 2.6 tutorial:
http://docs.python.org/dev/tutorial/modules.html#executing-modules-as-scripts

-- 
Gabriel Genellina



From akraemer at sbcglobal.net  Thu Oct 11 01:49:23 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Wed, 10 Oct 2007 22:49:23 -0700
Subject: Keeping track of subclasses and instances?
In-Reply-To: <fejtcg$9k1$1@news1.carnet.hr>
References: <fejpo9$vm$1@news1.carnet.hr>
	<t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>
	<fejtcg$9k1$1@news1.carnet.hr>
Message-ID: <1192081763.798940.227830@r29g2000hsg.googlegroups.com>

On Oct 10, 6:19 pm, Karlo Lozovina <_kar... at mosor.net> wrote:
> Larry Bates wrote:
> > I'm not completely sure I understand the question but here goes.
> > Instances of
> > classes are classes can be stored in lists or dictionaries.  In lists you
> > reference them via their index (or iterate over them) and in dictionaries
> > you can give them a name that is used as a key.
>
> I wish if it were that simple :).
>
> Here is a longer description - I have a function that given input creates a
> custom class and returns it back. The user is free to subclass that (even
> more, he should do that), and of course he will make instances of those
> subclasses. Now, my question is how to keep track of subclasses and their
> instances, without the need for user interaction (appending them to a list,
> or adding to dictionary)?
>
> Thanks,
>
> --
> Karlo Lozovina - Mosorclass Meta(type):

What about the following solution?

class Meta(type):
  def __new__(mcl,*args,**kw):
    class_ = super(Meta,mcl).__new__(mcl,*args,**kw)
    mcl._classes.append(class_)
    class_._instances = []
    return class_
  _classes = []

def factory():
  class Class(object):
    __metaclass__ = Meta
    def __new__(cls,*args,**kw):
      instance = super(Class,cls).__new__(cls,*args,**kw)
      cls._instances.append(instance)
      return instance
  return Class

>>> A = factory()
>>> class B(A): pass
...
>>> a = A()
>>> b = B()
>>> Meta._classes
[<class 'meta.Class'>, <class '__main__.B'>]
>>> A._instances
[<meta.Class object at 0xb7dbb08c>]
>>> B._instances
[<__main__.B object at 0xb7dbb0ec>]

So, you see that you can access all classes, their subclasses, and
instances from Meta.

Of course in a more elaborate version _classes and _instances should
store weak references, so that classes and instances can actually be
deleted. I also haven't explored under which circumstances this can
break ...

I can imagine different use cases for this, (though they certainly are
non-standard :-)). I once contemplated the (toy-) implementation of a
frame-based knowledge representation system using Python's object
model, where one definitely needs classes to keep track of their
instances ...

Cheers,
Andreas










From bbxx789_05ss at yahoo.com  Sat Oct 27 04:05:38 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: Sat, 27 Oct 2007 01:05:38 -0700
Subject: transmit an array via socket
In-Reply-To: <mailman.498.1193464764.13605.python-list@python.org>
References: <mailman.498.1193464764.13605.python-list@python.org>
Message-ID: <1193472338.008579.192310@19g2000hsx.googlegroups.com>

On Oct 26, 11:52 pm, "Jeff Pang" <pa... at juno.com> wrote:
> I want to transmit an array via socket from a host to another.
> How to do it? thank you.
>

Try this:

client:
-------
import socket

s = socket.socket()
host = 'localhost'
port = 3030
s.connect( (host, port) )

arr = [1, 2, 3]

for elmt in arr:
    send_str = "%s," % str(elmt)

    while send_str:
       chars_sent = s.send(send_str)
       send_str = send_str[chars_sent:]

s.close()



server:
-------
import socket

s = socket.socket()

host = "localhost"
port = 3030
s.bind((host, port))

s.listen(5)

while("Ctrl-C hasn't been entered"):
    new_sock, addr = s.accept()
    data_list = []

    while True:
        partial_data = new_sock.recv(1012)
        data_list.append(partial_data)
        if not partial_data: #then got all the data
            break

    data_str = ''.join(data_list)[:-1]  #chop off trailing comma
    arr_strs = data_str.split(",")

    arr_ints = [int(elmt) for elmt in arr_strs]
    print arr_ints



From gagsl-py2 at yahoo.com.ar  Fri Oct 19 22:25:45 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 23:25:45 -0300
Subject: __main__ : What is this?
References: <mailman.234.1192836549.13605.python-list@python.org>
	<1192839982.488484.102860@e34g2000pro.googlegroups.com>
Message-ID: <op.t0g407o7x6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 21:26:22 -0300, Matimus <mccredie at gmail.com> escribi?:

> The common pattern:
>
> if __name__ == "__main__":
>   # do stuff
>
> IMHO better written:
>
> if "__main__" == __name__:
>     # do stuff

I'm intrigued why do you feel the second alternative is better.
Which is your native language? In English (and Spanish, and many others  
but still not in the majority) the usual ordering is "subject-verb-object"  
or SVO, which matches the first alternative: "If the name is __main__, do  
this..."
As all the languages I know (not so many!) are SVO, I can't think of any  
equivalent of the second form [that I could say it's better than the first]

-- 
Gabriel Genellina



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 18:16:27 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 17 Oct 2007 00:16:27 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <47153796$0$14258$426a74cc@news.free.fr>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<mailman.11.1192428714.13605.python-list@python.org>
	<47153796$0$14258$426a74cc@news.free.fr>
Message-ID: <47153872$0$14258$426a74cc@news.free.fr>

Bruno Desthuilliers a ?crit :
> <OT>answering to Dmitri O.Kondratiev<OT>
(snip)
> 
> def reverse(xs):
>   if xs:
>     return xs
 >   else:
 >     return (reverse (xs[1:])) + [xs[0]]

I meant:

def reverse(xs):
   if not xs:
(etc...)

of course...

<ot mode='private joke>'
  story stargaming, I caught it first this time !-)
<*ot>


From nick at craig-wood.com  Mon Oct  8 13:30:13 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 08 Oct 2007 12:30:13 -0500
Subject: changes on disk not visible to script ?
References: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
	<mailman.1667.1191851919.2658.python-list@python.org>
	<1191852713.859771.109190@19g2000hsx.googlegroups.com>
Message-ID: <slrnfgkmqo.2si.nick@irishsea.home.craig-wood.com>

Bruce <epost2 at gmail.com> wrote:
>  On 8 Okt, 15:56, Richie Hindle <ric... at entrian.com> wrote:
> > [Bruce]
> >
> > > f.close()
> > > cmd = "echo %s | %s"%(argument_file,the_program)
> >
> > Either: you are a VB programmer and you've actually typed "f.close" rather
> > than "f.close()",
> 
>  You are right, I forgot the () in f.close() !
>  thanks for pointing that out.
> 
>  VB programmer!? Thats really harsh..

I used to make that mistake a lot as an ex-perl programmer.  I think
ruby is the same.

pychecker will warn about it though.

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From bj_666 at gmx.net  Mon Oct 22 06:14:01 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 10:14:01 GMT
Subject: python with braces pre-processor
References: <ffhrdr$ikp$1@news.ciril.fr>
Message-ID: <5o3bf9FktnthU3@mid.uni-berlin.de>

On Mon, 22 Oct 2007 09:44:27 +0000, Paul Brauner wrote:

> Hi, I'm working on a project that outputs several languages including 
> (hopefully) python. My problem is that the generic backend architecture 
> has not been designed to output correctly indented code, and that would 
> be helpful if there were somewhere a python pre-processor that would take 
> python with braces as an input and output regular python code. I thought 
> that it must exists because everyone generating python code will 
> encounter more or less the same problem, but I didn't find any 'official' 
> thing on the subject.

Maybe (almost) nobody feels the need to generate Python source code.  The
language is so dynamic that there are almost always ways to avoid
source code generation.

Maybe you can generate a token stream and use `tokenize.untokenize()` to
generate the source code!?

Ciao,
	Marc 'BlackJack' Rintsch


From lasses_weil at klapptsowieso.net  Sun Oct  7 11:49:04 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 17:49:04 +0200
Subject: Newbie packages Q
In-Reply-To: <1191771348.165051.36790@50g2000hsm.googlegroups.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
Message-ID: <4708fff0$0$4523$9b4e6d93@newsspool3.arcor-online.net>

MarkyMarc wrote:
>  *******************************
> atest.py:
> 
> def printA():
>         print "This is Atest from Apack"
> *******************************
> btest.py:
> from Test.apack import atest
> 
> def printB():
>         print "This is Btest from Bpack"
> 
> def printatest():
>         print atest.printA()
> 
> print printB()
> print printatest()
> *******************************
> 
> Now only one of them imports the other, and this most be the simplest
> way of illustrating the intra-package references.
> But how do I get this to work?
> 

This doesn't work? What error do you get?
I've never done too complicated packaging stuff, and can't raelly 
testdrive your example right now. Maybe you have to look into sys.path 
if Test can be found at all. Or maybe you have to play with the import 
statement (from apack import atest?). I'm just guessing here; importing 
continues to remain going on being a mystery to me.

/W


From gagsl-py2 at yahoo.com.ar  Sun Oct 21 14:05:45 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 21 Oct 2007 15:05:45 -0300
Subject: compiler module bug?
References: <7DEB606B-7856-4140-ADA9-4083EC22D380@bryant.edu>
	<op.t0j4vshfx6zn5v@a98gizw.cpe.telecentro.net.ar>
	<01E5EB0B-6904-438C-B9DD-B27310C0381D@bryant.edu>
Message-ID: <op.t0j67vm8x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 21 Oct 2007 14:33:00 -0300, Brian Blais <bblais at bryant.edu>  
escribi?:

> On Oct 21, 2007, at Oct 21:1:15 PM, Gabriel Genellina wrote:

>> The comment itself is not a problem; but the last line in the
>> source must
>> end in a newline.
>
> then, even if it is known problem, the docs are wrong.  the two
> (parseFile(path) and parse(open(path).read())) are *not* the same:
> one can handle a file which doesn't end in a newline, another one
> can't handle the same file.

Feel free to submit a bug report to http://bugs.python.org

> Can one hack it like:
>
>      filestr=open(filename).read()
>      filestr+="\n"

The parseFile function does exactly that, along with this comment:

     # XXX The parser API tolerates files without a trailing newline,
     # but not strings without a trailing newline.  Always add an extra
     # newline to the file contents, since we're going through the string
     # version of the API.

The compile function in py_compile.py that I've menctioned earlier does  
the same but only when needed:

     f = open(file, 'U')
     codestring = f.read()
     f.close()
     if codestring and codestring[-1] != '\n':
         codestring = codestring + '\n'

-- 
Gabriel Genellina



From yanzinmeister at googlemail.com  Tue Oct  9 22:52:16 2007
From: yanzinmeister at googlemail.com (yanzinmeister at googlemail.com)
Date: Wed, 10 Oct 2007 02:52:16 -0000
Subject: xyplot in Control desk from dspace
Message-ID: <1191984736.397820.315610@19g2000hsx.googlegroups.com>

Hello everyone,

i'm new user of python, in fact, i'm using Control Desk from dsPACE. I
just want to change the programm a bit to fit to my application.

I draw xyplot using virsual instrument xyplot in Control Desk, and i
want to delect any curses if it's needed. But in Control Desk the
xyplot is time signal, i can not  simply delect it. The visual
instrument is set up from python programming.

So i want to know the princip of xyplot in  python, and then i can
draw the needed curses in backgroud's color. In this way, the curses
seems as delected.

I appreciate very much if anyone can give me help or useful advice.



From robert.rawlins at thinkbluemedia.co.uk  Mon Oct 22 10:46:51 2007
From: robert.rawlins at thinkbluemedia.co.uk (Robert Rawlins - Think Blue)
Date: Mon, 22 Oct 2007 15:46:51 +0100
Subject: Check File Change Every 10 Seconds
In-Reply-To: <471CB652.5070802@timgolden.me.uk>
References: <27459.1491478079$1193048158@news.gmane.org>	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
	<471CB652.5070802@timgolden.me.uk>
Message-ID: <005101c814ba$632830b0$29789210$@rawlins@thinkbluemedia.co.uk>

Spot on Tim, I'm running Linux, I totally forgot to mention... more detail coming in a reply to Gabriel's post.

-----Original Message-----
From: python-list-bounces+robert.rawlins=thinkbluemedia.co.uk at python.org [mailto:python-list-bounces+robert.rawlins=thinkbluemedia.co.uk at python.org] On Behalf Of Tim Golden
Sent: 22 October 2007 15:40
Cc: python-list at python.org
Subject: Re: Check File Change Every 10 Seconds

Gabriel Genellina wrote:
> En Mon, 22 Oct 2007 06:56:52 -0300, Robert Rawlins - Think Blue  
> <robert.rawlins at thinkbluemedia.co.uk> escribi?:
> 
>> I've got a requirement to check a file for a change every 10 seconds or  
>> so,
>> and if the file has been modified since the last time I parsed its  
>> content
>> into the application then I need to parse it in again. However, I need  
>> this
>> process to not interrupt the rest of my application flow.
> 
> See this article by Tim Golden:
> http://timgolden.me.uk/python/win32_how_do_i/watch_directory_for_changes.html
> 
>> What is the best way to handle this? Is there some form of file watcher
>> module for python which can watch the file for me and then parse any  
>> changes
>> into the application memory? Or should I be spawning and unjoined thread
>> which contains and infinite loop which checks a date/time the file was
>> modified against an internal date/time variable for when the application
>> last parsed the file into memory?
> 
> I would use a different thread waiting for notifications from  
> ReadDirectoryChangesW (third option in the link above)
> See http://msdn2.microsoft.com/en-us/library/aa365465.aspx for more info  
> on ReadDirectoryChangesW
> 

Although Robert doesn't say so here, I seem to remember that his
past posts have indicated a *nix setting. Robert?

TJG
-- 
http://mail.python.org/mailman/listinfo/python-list



From dlee at altaregos.com  Mon Oct  1 13:16:49 2007
From: dlee at altaregos.com (Daryl Lee)
Date: Mon, 01 Oct 2007 11:16:49 -0600
Subject: Limits on search length
Message-ID: <47012B81.40100@altaregos.com>

I am trying to locate all lines in a suite of files with quoted strings of 
particular lengths.  A search pattern like r'".{15}"' finds 15-character 
strings very nicely.  But I have some very long ones, and a pattern like 
r'".{272}"' fails miserably, even though I know I have at least one 
272-character string.

In the short term, I can resort to locating the character positions of the 
quotes, but this seemed like such an elegant solution I hate to see it not 
work.  The program is given below (sans imports), in case someone can spot 
something I'm overlooking:

# Example usage: search.py *.txt \".{15}\"

filePattern = sys.argv[1]
searchPattern  = sys.argv[2]
cpat = re.compile(searchPattern)

for fn in glob.glob(filePattern):
     f = open(fn, "r")
     if f:
         lineNumber = 0
         for line in f:
             lineNumber += 1
             m = cpat.search(line)
             if m is not None:
                 print fn, "(", lineNumber, ")", line
     f.close()


-- 
Daryl Lee
Open the Present -- it's a Gift!



From duncan.booth at invalid.invalid  Sun Oct 28 11:51:10 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 28 Oct 2007 15:51:10 GMT
Subject: how to convert tuple to a "list of single values" ?
References: <mailman.536.1193585479.13605.python-list@python.org>
Message-ID: <Xns99D7A145D60C7duncanbooth@127.0.0.1>

stef mientki <stef.mientki at gmail.com> wrote:

> hello,
> 
> The next piece of code bothers me:
> 
>       ptx, pty, rectWidth, rectHeight = self._point2ClientCoord (p1, p2 )
>       dc.SetClippingRegion ( ptx, pty, rectWidth, rectHeight )
> 
> Because I want to write it in 1 line,
> and without the use of intermediate variables (for which I have to 
> invent names ;-)
> like this:
> 
>     dc.SetClippingRegion ( self._point2ClientCoord (p1, p2 ) )
Try:
   dc.SetClippingRegion ( *self._point2ClientCoord (p1, p2 ) )


From vinay_sajip at yahoo.co.uk  Sat Oct 20 15:18:34 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Sat, 20 Oct 2007 12:18:34 -0700
Subject: logging module - restricted mode error
In-Reply-To: <87przflpir.fsf@rudin.co.uk>
References: <87przflpir.fsf@rudin.co.uk>
Message-ID: <1192907914.138999.114910@k35g2000prh.googlegroups.com>

On 16 Oct, 04:14, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
> I'm occasionally seeing tracebacks like this:
>
> Traceback (most recent call last):
>   File "logging/__init__.py", line 744, in emit
>   File "logging/__init__.py", line 630, in format
>   File "logging/__init__.py", line 421, in format
> RuntimeError: instance.__dict__ not accessible in restricted mode
>
> I'm not sure what it means. Googling leads me to
> <http://docs.python.org/lib/restricted.html> but that says that those
> modules were disabled in 2.3 and I'm running 2.5.1. In any case I'm
> not using them (although it could be that one of the 3rd party modules
> I'm using does something.)
>
> Could someone please explain what this error means?

Can you say a little bit more about the execution environment? For
example, are you running under mod_python? If so, which version?

When googling, did you search for the exact text of the error message?
For example, did you see the following post?

http://mail-archives.apache.org/mod_mbox/httpd-python-dev/200404.mbox/%3C408661A5.3010001 at sjsoft.com%3E

Vinay Sajip



From mellit at gmail.com  Sun Oct 28 13:45:29 2007
From: mellit at gmail.com (Anton Mellit)
Date: Sun, 28 Oct 2007 17:45:29 -0000
Subject: Pari Python
Message-ID: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>

Hi,

I am working on a Pari-Python module (see about GP/PARI at
http://pari.math.u-bordeaux.fr/). Similar project was started by
Stefane Fermigier 12 years ago (you can find a post about it on this
newsgroup). You can see some screenshots on my blog (http://
mellit.wordpress.com/2007/10/28/pari-python/). I reproduce the text on
my blog here.

I finished some working version of the pari-python module. I tried to
make it is close as possible to the standard PARI shell, at the same
time using the standard python syntax. Here I put some screenshots. I
didn?t make a proper package distribution for python (the code still
looks ugly and I still don't know how to make proper distributions),
but if someone is interested to test it send me an email. This is in
early alpha stage. A lot of things are not working. I imported almost
all functions of gp by an automated perl script but I don?t know which
of them actually work and which not.

There are two special difficulties you may notice about python. The
first one is the power operation. In python it is ?**?, whereas ?^? is
reserved for the bitwise xor. I made some little changes to the python
source so that ?^? and ?^=? now work as power, and ?^^? and ?^^=? work
as xor if you still want to use it. This is done by modifying about 30
lines of source code in several files: Include/token.h, Modules/
parsermodule.c, Parser/tokenizer.c, Python/ast.c, Grammar/Grammar.

The second difficulty is that expressions like ?1/2? produce 0 in
python. For this my module installs my own handler for the operation
?divide? for integers and longs. That?s it. In other respects it is a
normal python module.

I will greatly appreciate any feedback.

Anton



From paul.hankin at gmail.com  Wed Oct 17 19:12:15 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 23:12:15 -0000
Subject: if instance exists problem ..
In-Reply-To: <mailman.142.1192660790.13605.python-list@python.org>
References: <mailman.142.1192660790.13605.python-list@python.org>
Message-ID: <1192662735.463554.165450@e9g2000prf.googlegroups.com>

On Oct 17, 11:39 pm, stef mientki <stef.mien... at gmail.com> wrote:
> the test if an instance exists, always returns false.
>     ini = inifile (filename)
>     if ini:
>         print 'ok',type(ini)
>     else:
>         print 'wrong',type(ini)
>
> Why is that ?
> What should I do to the same simple test for existance ?

First, object construction always gives you an object or raises an
exception, so you don't have to test for existence. If you don't know
if an object has been created, you should initialise ini to None, and
test with 'if ini is not None:'.

'if x' doesn't test if x exists, it tests if x when cast to a bool is
True. ConfigParser acts like a container, and returns False if it's
empty. Your class is (indirectly) a subclass of ConfigParser, but is
never initialised as such, and so is empty. So 'if ini' returns False,
and you get your confused result.

You need to decide if inifile is a subclass of ConfigObj, or is a
wrapper round a ConfigObj. Probably you want the former and your init
method should be something like:
  def __init__(self, filename):
    ConfigObj.__init__(self, filename, list_values=False,
      write_empty_values=True)
    self.newlines = '\r\n'
    self.Section = ''
    self.Modified = False

--
Paul Hankin



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct  4 06:38:42 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 12:38:42 +0200
Subject: module confusion
In-Reply-To: <fe1r3m$o5m$4@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
	<mailman.1487.1191456788.2658.python-list@python.org>
	<fe1r3m$o5m$4@lust.ihug.co.nz>
Message-ID: <4704c2a0$0$30562$426a74cc@news.free.fr>

Lawrence D'Oliveiro a ?crit :
> In message <mailman.1487.1191456788.2658.python-list at python.org>, Carsten
> Haese wrote:
> 
>> On Thu, 2007-10-04 at 11:11 +1300, Lawrence D'Oliveiro wrote:
>>
>>> In Python, all names _are_ variables. They are not "bound" to objects.
>>> The value of os.path is a pointer.
>> No. "os.path" refers to the object that's known as the "path" attribute
>> of the object known as "os". That object, in turn, is a module.
> 
> No, it's a variable. It just happens to contain a pointer to a module.

Lawrence, you should have a look at CPython's source code. And at other 
implementations too. Python's "variables" *really* are name/object pairs 
- most of the time key/value pairs in a dict. The name itself is just 
that : a name. It doesn't "contains" anything, it's *not* a label for a 
memory address, it's *only* a name.

>>>  It's implemented as a pointer,
>> While it is true that namespaces are implemented in CPython as
>> collections of pointers to PyObject structures, that's an irrelevant
>> implementation detail. I doubt that they are implemented as pointers in
>> Jython, PyPy, or IronPython.
> 
> I'll bet they are.

Since Java doesn't have pointers, you lost your bet.

>>>  it has all the semantics of a pointer.
>> No, it doesn't. A pointer means the physical address of a memory
>> location, which implies that you can overwrite that memory location. Can
>> you do that in Python?
> 
> Yes. Look up the definition of "mutable objects".

I think Carsten knows this definition. But it has nothing to do with 
"overwriting a memory location" - like you could do in C using pointers.



From gagsl-py2 at yahoo.com.ar  Wed Oct 24 00:39:01 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 24 Oct 2007 01:39:01 -0300
Subject: tracking/ordering log files
References: <1193165204.000752.268220@i38g2000prf.googlegroups.com>
	<1193170083.610513.149390@e34g2000pro.googlegroups.com>
Message-ID: <op.t0opvbv6x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 23 Oct 2007 17:08:03 -0300, nik <nikbaer at gmail.com> escribi?:

> I think it is called "logfile rotation" and see some links about
> log4py, but no description of what that is.

See the logging package; in particular, you want a RotatingFileHandler.
<http://docs.python.org/lib/module-logging.html>

-- 
Gabriel Genellina



From R.Brodie at rl.ac.uk  Tue Oct  2 10:58:06 2007
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Tue, 2 Oct 2007 15:58:06 +0100
Subject: Dictionary invalid token error
References: <fdtlqo$t1t$1@solaris.cc.vt.edu>
Message-ID: <fdtm9v$qfp$1@south.jnrs.ja.net>


"brad" <byte8bits at gmail.com> wrote in message news:fdtlqo$t1t$1 at solaris.cc.vt.edu...

> Why does 09 cause an invalid token while 9 does not?

9 isn't a valid octal digit. You probably want to use strings for
storing telephone number like codes, if leading zeroes are
significant. 




From bj_666 at gmx.net  Mon Oct 29 11:51:24 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 29 Oct 2007 15:51:24 GMT
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<Xns99D890339F424duncanbooth@127.0.0.1>
	<1193672098.625545.321250@22g2000hsm.googlegroups.com>
Message-ID: <5omdrsFneqbaU2@mid.uni-berlin.de>

On Mon, 29 Oct 2007 08:34:58 -0700, Armando Serrano Lombillo wrote:

> On Oct 29, 3:10 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
>>
>> I don't know if the reason that most builtin functions don't accept
>> keywords is just historical (someone would have to go through a lot of
>> code and add keyword argument names) or if there really is any
>> measurable performance difference to not using the METH_KEYWORDS option.
>> Being able to write less C code may be the main factor.
> 
> Ok. I was suspecting something like this. Performance issues aside, I
> think it would be a good idea if built-in functions behaved exactly
> the same as normal functions.

As Steven D'Aprano showed they behave like normal functions.  Even pure
Python functions can have arguments without names:

def spam(*args):
    pass

Ciao,
	Marc 'BlackJack' Rintsch


From exarkun at divmod.com  Mon Oct 29 13:37:42 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 29 Oct 2007 12:37:42 -0500
Subject: Built-in functions and keyword arguments
In-Reply-To: <009f01c81a4d$ff023d80$03000080@hendrik>
Message-ID: <20071029173742.8162.554468338.divmod.quotient.29276@ohm>

On Mon, 29 Oct 2007 19:03:34 +0200, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
>"Tim Chase" <python.list at tim.thechases.com>
>
>> > I think you are being a little bit unfair here: help(len) says:
>> >
>> > len(...)
>> >     len(object) -> integer
>> >
>> >     Return the number of items of a sequence or mapping.
>> >
>> > which implies that the argument to len has the name 'object' (although in
>> > fact it doesn't have a name).
>>
>> And to confound matters even further for the uninitiated,
>>
>> http://docs.python.org/lib/built-in-funcs.html#l2h-45
>>
>> says that it's "len(s)" instead (but "len(s=[])" doesn't work either)
>
>Looks like a gotcha to me - its the difference between a keyword
>(master = 42) and an assignment  (s='I am a string')
>

But it's not a keyword:

  >>> len(s=[])
  Traceback (most recent call last):
    File "<stdin>", line 1, in ?
  TypeError: len() takes no keyword arguments
  >>>

I think that's the issue here.

Jean-Paul


From mail at timgolden.me.uk  Fri Oct  5 04:42:41 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 05 Oct 2007 09:42:41 +0100
Subject: Cross platform way of finding number of processors on a machine?
In-Reply-To: <1191571759.756054.319730@o80g2000hse.googlegroups.com>
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>	<66d0a6e10710042102m5e7bf9a9i9c6e7ff5c796c608@mail.gmail.com>	<mailman.1562.1191571026.2658.python-list@python.org>
	<1191571759.756054.319730@o80g2000hse.googlegroups.com>
Message-ID: <4705F901.8070104@timgolden.me.uk>

[Tim Golden]
>>    """
>>    Windows Server 2003, Windows XP, and Windows 2000:
>>      This property is not available.
>>    """
>>
>> since it's presumably not available in anything earlier either,
>> that leaves you with Vista or the early-adopter editions of the
>> next Windows Server product.

Kay Schluehr wrote:

> Remarkable. I've a two years old Windows XP dual core notebook and
> when I'm asking Python I get the correct answer:
> 
>>>> import os
>>>> os.environ['NUMBER_OF_PROCESSORS']
> 2
> 
> However this feature might not be guaranteed by Microsoft for
> arbitrary computers using their OS?

Ahem. I was referring (and not very clearly, now I look
back at my post) to a particular property within the
WMI class, not to the general concept of counting
processors.

TJG


From deets at nospam.web.de  Sun Oct 14 06:08:52 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 14 Oct 2007 12:08:52 +0200
Subject: Entering username & password automatically using urllib.urlopen
In-Reply-To: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
References: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
Message-ID: <5ne85rFhraaeU1@mid.uni-berlin.de>

rodrigo schrieb:
> I am trying to retrieve a password protected page using:
> 
> get = urllib.urlopen('http://password.protected.url"').read()
> 
> While doing this interactively, I'm asked for  the username, then the
> password at the terminal.
> Is there any way to do this non-interactively? To hardcode the user/
> pass into the script so I can get the page automatically?
> 
> (This is not a cracking attempt, I am trying to retrieve a page I have
> legitimate access to, just doing it automatically when certain
> conditions are met.)

Is that HTTP-auth? Then this might help:

http://www.voidspace.org.uk/python/articles/authentication.shtml

BTW, use urllib2.

Diez


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 31 09:25:00 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 31 Oct 2007 14:25:00 +0100
Subject: marshal vs pickle
References: <mailman.669.1193815903.13605.python-list@python.org>
Message-ID: <5ore1cFo0djvU2@mid.individual.net>

Evan Klitzke wrote:
> Can anyone elaborate more on the difference between marshal and
> pickle. In what conditions would using marshal be unsafe? If one
> can guarantee that the marshalled objects would be created and
> read by the same version of Python, is that enough?

Just use pickle. From the docs:

| The marshal module exists mainly to support reading and writing
| the ``pseudo-compiled'' code for Python modules of .pyc files.
| Therefore, the Python maintainers reserve the right to modify the
| marshal format in backward incompatible ways should the need
| arise. If you're serializing and de-serializing Python objects,
| use the pickle module instead.     
 
Regards,


Bj?rn

-- 
BOFH excuse #421:

Domain controller not responding



From Graham.Dumpleton at gmail.com  Tue Oct 23 02:33:11 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Tue, 23 Oct 2007 06:33:11 -0000
Subject: Monitoring external processes
In-Reply-To: <1193116191.769987.198560@z24g2000prh.googlegroups.com>
References: <1193116191.769987.198560@z24g2000prh.googlegroups.com>
Message-ID: <1193121191.865066.13950@v29g2000prd.googlegroups.com>

On Oct 23, 3:09 pm, arunasu... at gmail.com wrote:
> Hi,
>
> Is there a way to track external processes launched by python on the
> Mac? I am using subprocess module to launch the process.
>
> Thanks
> Sunil

If using Python 2.3/2.4, you can use os.wait().

If using Python 2.5, there is also have os.wait3() and os.wait4().

See the operating system manual pages for the difference. Ie.,

  man wait4

Graham



From dinesh.vadhia at theworkssoftware.com  Tue Oct 23 17:44:29 2007
From: dinesh.vadhia at theworkssoftware.com (dineshv)
Date: Tue, 23 Oct 2007 14:44:29 -0700
Subject: Lists and Sublists
Message-ID: <1193175869.803399.43650@y27g2000pre.googlegroups.com>

We have a list of N (>2,000) keywords (of datatype string).  Each of
the N keywords has associated with it a list of names of varying
numbers.  For example, keyword(1) will have a list of L1 names
associated with it, keyword(2) will have a list of L2 names associated
with it and so on with L1 not equal to L2 etc.  All keywords and names
are immutable.

Given a keyword(n) , we want to get hold of the associated list of Ln
names.

At anytime, we also want to add keywords to the list of N keywords,
and to any of the associated Ln lists - both of which will grow to
very large sizes.

The data will be read into the Python data structure(s) from disk
storage.

I am struggling to work out what is the ideal Python data structure
for the above.  Any help would be greatly appreciated.

Dinesh



From dpholmes at gmail.com  Tue Oct 23 21:10:31 2007
From: dpholmes at gmail.com (dpholmes at gmail.com)
Date: Tue, 23 Oct 2007 18:10:31 -0700
Subject: web.py & postgresql error
In-Reply-To: <1193103986.278189.112900@v29g2000prd.googlegroups.com>
References: <1193101575.928334.17790@e9g2000prf.googlegroups.com>
	<1193103986.278189.112900@v29g2000prd.googlegroups.com>
Message-ID: <1193188231.140130.32720@e9g2000prf.googlegroups.com>

On Oct 23, 10:15 am, Adam Atlas <a... at atlas.st> wrote:
> On Oct 22, 9:06 pm, dphol... at gmail.com wrote:
>
> > hi everyone, i'm very new to python and to this forum.  i'm actually
> > just trying to work through the tutorial on webpy.org.  so far, so
> > good, but as i tried to incorporate a postgresql database into the
> > demo web app i'm receiving this error print out:
>
> > [...]
> > ImportError: No module named pgdb
>
> > any thoughts would be greatly appreciated.
> > thanks,
> > doug
>
> It looks like you just haven't installed PyGreSQL yet. <http://www.pygresql.org/>
>
> Future web.py questions should probably be directed to the web.py
> group <http://groups.google.com/group/webpy/>, though.

Thanks for the help, installing PyGreSQL was the key, I was unaware
that PostGreSQL was not all I needed.  Thanks again.



From lmierzej at o2.pl  Sun Oct 14 17:57:12 2007
From: lmierzej at o2.pl (Lukasz Mierzejewski)
Date: Sun, 14 Oct 2007 21:57:12 +0000 (UTC)
Subject: pydev code completion problem
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
	<1192394167.058669.117830@q5g2000prf.googlegroups.com>
Message-ID: <feu3bo$8hs$2@nemesis.news.tpi.pl>

On Sun, 14 Oct 2007 20:36:07 +0000, cyberco wrote:

> Confirmed (with exactly the same software).
> 
> Please discuss this issue at the PyDev discussion forum:
> http://sourceforge.net/forum/forum.php?forum_id=293649


Thank you for replay, but I'm still not sure what to think about it...
Marc 'BlackJack' Rintsch in his replay to my post says that it would be to
complicated for IDE to keep track of all objects... isn't he right?


From sudharsh at gmail.com  Wed Oct 31 13:18:15 2007
From: sudharsh at gmail.com (sudharsh at gmail.com)
Date: Wed, 31 Oct 2007 17:18:15 -0000
Subject: Building libraries that my extensions can use. [distutils]
Message-ID: <1193851095.711200.268270@z24g2000prh.googlegroups.com>

Hello all,
I want to create a shared object that my extension modules can
dynamically load with intact symbols across modules. Searching the
documentation lead me to distutils.ccompiler. Quite frankly
comprehending this has been difficult for the newbie in me. I did
google (..and krugle) for setup scripts that use this but they seem to
be designed for medium to large projects. Mine is quite small to
modify the ccompiler class.

                 o (foo.so)
                / \
               /   \
              /     \
             /       \
          bar.c   baz.c

So in my setup script i would like to have 'foo' under the libraries
list in setup(). Is there a dummy' guide for this, or atleast a pretty
basic example which I might pick upon given the simplicity.

I did try this

libraries=[("foo", {'sources'=src_dir, 'include_dirs'=dir, 'libraries'
= some_external_thingy})]

And it seems to build fine but I find that symbols in the object file
are not visible to the others..

Am I in a state of confusion or what...=(, Anyone please guide me out
of this by pointing me to a  trivial example..

Thanks,
Sudharshan S



From cool.vimalsmail at gmail.com  Wed Oct  3 05:18:45 2007
From: cool.vimalsmail at gmail.com (vimal)
Date: Wed, 03 Oct 2007 09:18:45 -0000
Subject: generating range of numbers
Message-ID: <1191403125.540152.72320@22g2000hsm.googlegroups.com>

hi all,

     i am new to python.....
     i just want to generate numbers in the form like:

    1,2,4,8,16,32.....to a maximum of 1024

    using a range function



From oliphant.travis at ieee.org  Mon Oct 22 18:49:15 2007
From: oliphant.travis at ieee.org (Travis Oliphant)
Date: Mon, 22 Oct 2007 17:49:15 -0500
Subject: Committing latest patch on Issue 708374 to SVN (adding offset
	to mmap)
In-Reply-To: <ffithl$17v$1@ger.gmane.org>
References: <ffithl$17v$1@ger.gmane.org>
Message-ID: <ffj9da$am2$2@ger.gmane.org>

Travis Oliphant wrote:
> Hi all,
> 
> I think the latest patch for fixing Issue 708374 (adding offset to mmap) 
> should be committed to SVN.
> 
> I will do it, if nobody opposes the plan.  I think it is a very 
> important addition and greatly increases the capability of the mmap module.
> 
> Thanks,
> 
> -Travis Oliphant

Sorry for the noise,  I sent this to the wrong group.  Any comment on 
the patch is welcome, however.

Best regards,

-Travis



From byte8bits at gmail.com  Fri Oct 12 16:40:54 2007
From: byte8bits at gmail.com (brad)
Date: Fri, 12 Oct 2007 16:40:54 -0400
Subject: test if email
In-Reply-To: <feojgb$k16$01$1@news.t-online.com>
References: <feojgb$k16$01$1@news.t-online.com>
Message-ID: <feom4s$l0h$1@solaris.cc.vt.edu>

Florian Lindner wrote:
> Hello,
> is there a function in the Python stdlib to test if a string is a valid
> email address?

Nope, most any string with an @ in it could be a valid email addy. Send 
a message to the addy, if it doesn't bounce, then it's valid.


From timr at probo.com  Wed Oct 31 02:54:19 2007
From: timr at probo.com (Tim Roberts)
Date: Wed, 31 Oct 2007 06:54:19 GMT
Subject: clear shell screen
References: <mailman.556.1193627311.13605.python-list@python.org>
Message-ID: <3i9gi3himvb64sdu1iel5aq7ps0i3pm7r0@4ax.com>

Shawn Minisall <trekker182 at comcast.net> wrote:
>
>Does anyone know how to clear the shell screen completely ?  I tried 
>import os and then os.system("clear") was said to have worked in Windows 
>XP, but it's just bringing up another window, then it turns black and 
>then it closes in within about a second moving the prompt at the 
>os.system("clear") line .  I've also tried os.system("cls") with the 
>same results.

os.system('cls') works just fine from a command shell.  I just tried it.

Are you running from inside Pythonwin?  If so, then what you are looking at
is not a "shell screen" in any way.  It's a simulation, and I don't know of
any way to clear it.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From cokofreedom at gmail.com  Mon Oct 22 08:58:48 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Mon, 22 Oct 2007 12:58:48 -0000
Subject: Iteration for Factorials
In-Reply-To: <oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
Message-ID: <1193057928.591463.107650@t8g2000prg.googlegroups.com>

On Oct 22, 2:43 pm, Marco Mariani <ma... at sferacarta.com> wrote:
> Py-Fun wrote:
> > def itforfact(n):
> >     while n<100:
> >         print n
> >         n+1
> > n = input("Please enter a number below 100")
>
> You function should probably return something. After that, you can see
> what happens with the result you get.

lambda n: n<=0 or reduce(lambda a,b: long(a)*long(b),xrange(1,n+1))




From scripteaze at gmail.com  Mon Oct 29 05:03:14 2007
From: scripteaze at gmail.com (scripteaze at gmail.com)
Date: Mon, 29 Oct 2007 09:03:14 -0000
Subject: sharing vars with different functions
Message-ID: <1193648594.380143.153450@o38g2000hse.googlegroups.com>

Im tryin to call a var thats sitting in a function, example:

class someclass(object):
         somevar = open(blah, 'r').readlines()


def something():

        for line in somevar:
             print line
-----------------------------------------------------------------------

i  guess im not graspng the whole global or local var topic..

Any examples??



From brunobgDELETETHIS at users.sourceforge.net  Thu Oct 11 11:23:30 2007
From: brunobgDELETETHIS at users.sourceforge.net (Bruno Barberi Gnecco)
Date: Thu, 11 Oct 2007 12:23:30 -0300
Subject: RuntimeWarning: tp_compare
In-Reply-To: <mailman.2.1191962635.927.python-list@python.org>
References: <fegojh01rmh@news5.newsguy.com>
	<mailman.2.1191962635.927.python-list@python.org>
Message-ID: <feldsa01kv0@news3.newsguy.com>

Chris Mellon wrote:
> On 10/9/07, Bruno Barberi Gnecco
> <brunobgDELETETHIS at users.sourceforge.net> wrote:
> 
>>        I'm getting the following exception when I call an external extension
>>(pytst):
>>
>>/usr/lib/python2.5/threading.py:697: RuntimeWarning: tp_compare didn't return -1 or -2 for
>>exception
>>   return _active[_get_ident()]
>>Traceback (most recent call last):
>>   File "testDataMiner2.py", line 77, in <module>
>>     testPlace()
>>   File "testDataMiner2.py", line 41, in testPlace
>>     data = db.getDescription(event['id'])
>>   File "testDataMiner2.py", line 28, in getDescription
>>     return self.getRow(query, (id,))
>>   File "../database.py", line 73, in getRow
>>     self.readlock.acquire()
>>   File "/usr/lib/python2.5/threading.py", line 94, in acquire
>>     me = currentThread()
>>   File "/usr/lib/python2.5/threading.py", line 697, in currentThread
>>     return _active[_get_ident()]
>>UnicodeEncodeError: 'ascii' codec can't encode character u'\xfa' in position 52: ordinal
>>not in range(128)
>>awer
>> > /usr/lib/python2.5/threading.py(700)currentThread()
>>-> return _DummyThread()
>>
>>
>>        Note that the error occurs *after* the call that I isolated as
>>affecting it (pytst.scan(), in the case). This doesn't happen for simple,
>>isolated cases, but googling for "tp_compare threading" shows a lot of
>>similar issues. Does anybody here know what this could be about? Any ideas
>>to debug or work around it?
>>
> 
> 
> The various thread issues in the traceback aside, it looks like the
> problem is that you passed a unicode object to pytst, which only
> accepts plain (ascii) strings.

	That seems to have solved it. Thanks!

-- 
Bruno Barberi Gnecco <brunobg_at_users.sourceforge.net>
There is no time like the pleasant.


From paulgeeleher at gmail.com  Mon Oct 15 11:09:23 2007
From: paulgeeleher at gmail.com (sophie_newbie)
Date: Mon, 15 Oct 2007 08:09:23 -0700
Subject: Setting a timeout for a cookie
Message-ID: <1192460963.317397.213010@e9g2000prf.googlegroups.com>

Hi,

I'm wondering how do you set a 'timeout' or expiry date/time for a
cookie set using a python cgi script. I can set a cookie ok but I
dunno how to set the expiry time so it always expires at the end of
the session.

Thanks!



From http  Tue Oct 23 00:59:13 2007
From: http (Paul Rubin)
Date: 22 Oct 2007 21:59:13 -0700
Subject: Committing latest patch on Issue 708374 to SVN (adding offset to
	mmap)
References: <mailman.341.1193081223.13605.python-list@python.org>
Message-ID: <7xmyua77fi.fsf@ruckus.brouhaha.com>

Travis Oliphant <oliphant.travis at ieee.org> writes:
> I think the latest patch for fixing Issue 708374 (adding offset to
> mmap) should be committed to SVN.

I can't figure out what this is about from the issue tracker without
examining the patch.  It looks like the patch has been accepted; could
you please also check in a doc fix explaining the new functionality?


From devraj at gmail.com  Thu Oct 11 18:21:18 2007
From: devraj at gmail.com (Devraj)
Date: Thu, 11 Oct 2007 22:21:18 -0000
Subject: urllib.ProxyHandler HTTPS issues
In-Reply-To: <87641d8pzb.fsf@pobox.com>
References: <1192078997.453819.323390@22g2000hsm.googlegroups.com>
	<87641d8pzb.fsf@pobox.com>
Message-ID: <1192141278.464551.182390@e9g2000prf.googlegroups.com>

Thanks John. Will investigate sending the CONNECT command to handle
proxies.

Do you recommend doing this for HTTP proxies as well or should I just
use the ProxyHandler for HTTP proxies?


On Oct 12, 4:29 am, j... at pobox.com (John J. Lee) wrote:
> Devraj <dev... at gmail.com> writes:
> > Hi everyone,
>
> > I have been reading various documents/posts on the web about handling
> > proxy options in urllib2. Some of them suggest that urllib2 doesn't
> > handle HTTPS and others say it does. I have successfully written code
> > that relays HTTP connections via a proxy but have failed to do the
> > same for HTTPS connections.
>
> urllib2 does not support "HTTPS proxies" (it does not support use of
> the CONNECT method).
>
> > Can anyone confirm if urllib2 can handle HTTPS,
>
> Yes, it can.
>
> John




From sjmachin at lexicon.net  Mon Oct 15 17:11:27 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 15 Oct 2007 14:11:27 -0700
Subject: Order of tuples in dict.items()
In-Reply-To: <mailman.22.1192459653.13605.python-list@python.org>
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
	<13h55uj8pogd4ea@corp.supernews.com>
	<mailman.22.1192459653.13605.python-list@python.org>
Message-ID: <1192482687.653615.182140@v29g2000prd.googlegroups.com>

On Oct 16, 12:47 am, Erik Jones <e... at myemma.com> wrote:

> Not between two consecutive reads, no.  However, after any resizing
> of a dict the result of Python's hash function for any given newly
> inserted key is extremely likely to be different than it would have
> been before the resizing, i.e. the method may be the same, but the
> result is different.

Could you please supply the basis for the above assertion? My reading
of the docs for the built-in hash function, the docs for an object's
__hash__ method, and the source (dictobject.c, intobject.c,
stringobject.c) indicate (as I would have expected) that the hash of
an object is determined solely by the object itself, not by the
history of insertion into a dict (or multiple dicts!?).

Note that position_in dict = some_function(hash(obj),
size_of_dict) ... perhaps you are conflating two different concepts.




From sjmachin at lexicon.net  Tue Oct 16 18:26:02 2007
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 16 Oct 2007 15:26:02 -0700
Subject: negative base raised to fractional exponent
In-Reply-To: <mailman.95.1192572226.13605.python-list@python.org>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
	<mailman.95.1192572226.13605.python-list@python.org>
Message-ID: <1192573562.622390.218860@i38g2000prf.googlegroups.com>

On Oct 17, 8:03 am, Steve Holden <st... at holdenweb.com> wrote:
> schaefer... at gmail.com wrote:
> > Does anyone know of an approximation to raising a negative base to a
> > fractional exponent? For example, (-3)^-4.11111 since this cannot be
> > computed without using imaginary numbers. Any help is appreciated.
>
> A couple of questions.
>
> 1. How do you approximate a complex number in the reals? That doesn't
> make sense.
>
> 2. x ^ -4.1111 = 1 / (x ^ 4.1111), so where do complex numbers enter
> into this anyway?
>
> 3. I think you will find the complex numbers start to emerge as you
> explore fractional exponents.

This is part of the story -- the other part is that the story differs
depending on whether x is positive or negative.

>
> This being Python, and an interactive interpreter being available, you
> can always just try it:
>
>  >>> -3 ** -4.1111
> -0.010927147607830808

Steve, Trying to memorise the operator precedence table for each of
several languages was never a good idea. I admit advanced age :-) and
give up and use parentheses, just like the OP did:

>>> (-3)**-4.11111
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: negative number cannot be raised to a fractional power

Best regards,
John



From aleax at mac.com  Sun Oct  7 19:58:45 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 16:58:45 -0700
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
	<13giput3mhtvb6c@corp.supernews.com>
Message-ID: <1i5mh1z.7kw0621m8tpmpN%aleax@mac.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:

> On Sun, 07 Oct 2007 13:24:14 -0700, Alex Martelli wrote:
> 
> > And yes, you CAN save about 1/3 of those 85 nanoseconds by having
> > '__slots__=["zop"]' in your class A(object)... but that's the kind of
> > thing one normally does only to tiny parts of one's program that have
> > been identified by profiling as dramatic bottlenecks
> 
> Seems to me that:
> 
> class Record(object):
>     __slots__ = ["x", "y", "z"]
> 
> 
> has a couple of major advantages over:
> 
> class Record(object):
>     pass
> 
> 
> aside from the micro-optimization that classes using __slots__ are faster
> and smaller than classes with __dict__.
> 
> (1) The field names are explicit and self-documenting;
> (2) You can't accidentally assign to a mistyped field name without Python
> letting you know immediately.
> 
> 
> Maybe it's the old Pascal programmer in me coming out, but I think 
> they're big advantages.

I'm also an old Pascal programmer (ask anybody who was at IBM in the
'80s who was the most active poster on the TURBO FORUM about Turbo
Pascal, and PASCALVS FORUM about Pascal/Vs...), and yet I consider these
"advantages" to be trivial in most cases compared to the loss in
flexibility, such as the inability to pickle (without bothering to code
an explicit __getstate__) and the inability to "monkey-patch" instances
on the fly -- not to mention the bother of defining a separate 'Record'
class for each and every combination of attributes you might want to put
together.

If you REALLY pine for Pascal's records, you might choose to inherit
from ctypes.Structure, which has the additional "advantages" of
specifying a C type for each field and (a real advantage;-) creating an
appropriate __init__ method.

>>> import ctypes
>>> class Record(ctypes.Structure):
...  _fields_ =
(('x',ctypes.c_float),('y',ctypes.c_float),('z',ctypes.c_float)
)
... 
>>> r=Record()
>>> r.x
0.0
>>> r=Record(1,2,3)
>>> r.x
1.0
>>> r=Record('zip','zop','zap')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError:  float expected instead of str instance

See?  You get type-checking too -- Pascal looms closer and closer!-)

And if you need an array of 1000 such Records, just use as the type
Record*1000 -- think of the savings in memory (no indirectness, no
overallocations as lists may have...).

If I had any real need for such things, I'd probably use a metaclass (or
class decorator) to also add a nice __repr__ function, etc...


Alex


From mccredie at gmail.com  Wed Oct 24 11:30:37 2007
From: mccredie at gmail.com (Matimus)
Date: Wed, 24 Oct 2007 15:30:37 -0000
Subject: win32com.client documentation?
In-Reply-To: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
References: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
Message-ID: <1193239837.697173.108200@i13g2000prf.googlegroups.com>

On Oct 24, 7:35 am, Mark Morss <mfmo... at aep.com> wrote:
> I am a unix person, not new to Python, but new to Python programming
> on windows.  Does anyone know where to find documentation on
> win32com.client?  I have successfully installed this module and
> implemented some example code.  But a comprehensive explanation of the
> objects and methods available is nowhere to be found.  I have been
> able to find a somewhat out-of-date O'Reilly book, nothing more.
>
> I want to be able to script the creation of Excel spreadsheets and
> Word documents, interract with Access data bases, and so forth.

That book, if you are talking about "Python Programming on Win32" by
Mark Hamond and Andy Robinson, is the best resource that I know of.
There are a few other places for help, and two of those the help files
installed on your computer with win32com and the source code. You may
be able to find other tutorials and such online. What helped me though
was not a better understanding of these packages, but a better
understanding of COM in general. Once I had a fair understanding of
COM I had a much better experience. I found "Inside COM" by Dale
Rogerson to be a good general resource on learning COM, although there
are many books on the subject to choose from. I can't really help you
any more unless you come up with a specific example of what you are
trying to do.

Matt



From google at mrabarnett.plus.com  Fri Oct 19 19:42:24 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Fri, 19 Oct 2007 16:42:24 -0700
Subject: Noob: Loops and the 'else' construct
In-Reply-To: <mailman.196.1192763502.13605.python-list@python.org>
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
	<mailman.196.1192763502.13605.python-list@python.org>
Message-ID: <1192837344.623098.186960@k35g2000prh.googlegroups.com>

On Oct 19, 4:11 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Thu, 18 Oct 2007 23:44:27 -0300, Ixiaus <parnel... at comcast.net>
> escribi?:
>
> > I have just come across a site that discusses Python's 'for' and
> > 'while' loops as having an (optional) 'else' structure.
>
> > At first glance I interpreted it as being a bit like the 'default'
> > structure in PHP's switch block... But the switch block isn't a loop,
> > so, I am now confused as to the reason for using 'else' with the for
> > and while loops...
>
> > A few quick tests basically show that statements in the else structure
> > are executed at the fulfillment of the loop's expression (ie, no
> > break).
>
> A `while` loop tests a condition: if it evaluates to true, keep cycling;
> if it is false, stop. The `else` clause is executed when the condition is
> false, as in any `if` statement. If you exit the loop by using `break`,
> the `else` part is not executed (because you didn't get out of the loop by
> determining the condition falseness)
>
> You can think of a `for` loop as meaning `while there are remaining
> elements to be iterated, keep cycling` and the `else` clause applies when
> there are no more elements. A `break` statement does not trigger the else
> clause because the iteration was not exhausted.
>
> Once you get the idea, it's very simple.
>
It's useful when you want to search for an item and to do something if
you don't find it, eg:

for i in items:
    if is_wanted(i):
        print "Found it"
        break
else:
    print "Didn't find ir"



From Eric.Foster at modot.mo.gov  Tue Oct 30 12:27:22 2007
From: Eric.Foster at modot.mo.gov (Eric.Foster at modot.mo.gov)
Date: Tue, 30 Oct 2007 11:27:22 -0500
Subject: Python Instructor Needed for GIS Symposium in April 2008
Message-ID: <OF5793B6A6.A1391CE1-ON86257384.005A354D-86257384.005A6623@modot.mo.gov>

I am involved with MAGIC  http://www.magicgis.org/   an organization to 
encourage GIS development, sharing, cooperation, etc. and educate 
practitioners in GIS.  We hold a symposium every two years in April (next 
is April 2008) and provide speakers and workshops in relevant GIS 
subjects. ESRI's ArcGIS software holds  the market majority and has 
embrace Python language as a preferred scripting, customization language.  
 One area we have trouble with for our symposium is  getting instructors 
for Python workshops.   The symposium is in Kansas City on April 20-24, 
2008 and the hands on computer based Python course would be held for 4 
hours on Sunday April 20th in the afternoon for about 30 beginner and 
intermediate programmers.   We would like some application to ArcGIS, but 
just basic Python language instruction is also needed.  The instructors 
and speakers as well as the planning committee are asked to volunteer to 
keep the cost down to symposium attendees.    Would you be a good fit (or 
know anyone) as an instructor for this Introduction to Python language 
course?
The Symposium Steering Committee would like to get a commitment by Nov. 2, 
2008 in order to publish a preliminary program.   Sorry for the short 
notice, we thought we had an instructor but do not.   We need a short 1-2 
paragraph summary or outline of the workshop by the Nov 2, 2008 date, but 
will accept later considerations.   We are willing to help develop any 
materials needed.
Contact me by phone or email if you have questions or would like to 
volunteer.   Thanks.

Eric Foster, Senior Transportation Planner
MoDOT, 600 NE Colbern Rd. Lee's Summit, MO 64086
(816) 622-6330

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071030/c092d89e/attachment.html>

From pydecker at gmail.com  Tue Oct 16 20:46:25 2007
From: pydecker at gmail.com (Peter Decker)
Date: Tue, 16 Oct 2007 20:46:25 -0400
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <471530E3.9090602@gmail.com>
References: <471530E3.9090602@gmail.com>
Message-ID: <ca55a9900710161746o673a2ce6ma1780f3c1033cb0b@mail.gmail.com>

On 10/16/07, stef mientki <stef.mientki at gmail.com> wrote:

> I'm always have great difficulties, replying to this beautiful and
> helpful list.
>
> When I hit the reply button,
> the message is sent personally to the sender and not to the list.
> I've subscribed to dozen's of lists,
> and all have an "reply-to" address, that points to list and not to the
> individual.

Don't you write your applications so that the default behavior isn't
what is expected?

I'm writing this message to the *list*, not to you. Anyone who gets it
only gets it from the *list*, not from me. Pretending that this
message in your inbox is not from the list is just silly.

The only people who defend this practice usually don't use the email
interface anyway. They're also the people who whine about keeping
replies on the list.

But hey, we have to sacrifice the practical and useful in the name of
enforcing some standards that make little if any sense.

-- 

# p.d.


From xah at xahlee.org  Mon Oct 29 18:33:54 2007
From: xah at xahlee.org (Xah Lee)
Date: Mon, 29 Oct 2007 15:33:54 -0700
Subject: emacs lisp as text processing language...
In-Reply-To: <1193697024.171112.28490@t8g2000prg.googlegroups.com>
References: <1193697024.171112.28490@t8g2000prg.googlegroups.com>
Message-ID: <1193697234.759637.20120@q3g2000prf.googlegroups.com>

... continued from previous post.

PS I'm cross-posting this post to perl and python groups because i
find that it being a little know fact that emacs lisp's power in the
area of text processing, are far beyond Perl (or Python).

... i worked as a professional perl programer since 1998. I started to
study elisp as a hobby since 2005. (i started to use emacs daily since
1998) It is only today, while i was studying elisp's file and buffer
related functions, that i realized how elisp can be used as a general
text processing language, and in fact is a dedicated language for this
task, with powers quite beyond Perl (or Python, PHP (Ruby, java, c
etc) etc).

This realization surprised me, because it is well-known that Perl is
the de facto language for text processing, and emacs lisp for this is
almost unknown (outside of elisp developers). The surprise was
exasperated by the fact that Emacs Lisp existed before perl by almost
a decade. (Albeit Emacs Lisp is not suitable for writing general
applications.)

My study about lisp as a text processing tool today, remind me of a
article i read in 2000: ?Ilya Regularly Expresses?, of a interview
with Dr Ilya Zakharevich (author of cperl-mode.el and a major
contributor to the Perl language). In the article, he mentioned
something about Perl's lack of text processing primitives that are in
emacs, which i did not fully understand at the time. (i don't know
elisp at the time)

The article is at:
http://www.perl.com/lpt/a/2000/09/ilya.html

Here's the relevant excerpt:
?
Let me also mention that classifying the text handling facilities of
Perl as "extremely agile" gives me the willies. Perl's regular
expressions are indeed more convenient than in other languages.
However, the lack of a lot of key text-processing ingredients makes
Perl solutions for many averagely complicated tasks either extremely
slow, or not easier to maintain than solutions in other languages (and
in some cases both).

I wrote a (heuristic-driven) Perlish syntax parser and transformer in
Emacs Lisp, and though Perl as a language is incomparably friendlier
than Lisps, I would not be even able of thinking about rewriting this
tool in Perl: there are just not enough text-handling primitives
hardwired into Perl. I will need to code all these primitives first.
And having these primitives coded in Perl, the solution would turn out
to be (possibly) hundreds times slower than the built-in Emacs
operations.

My current conjecture on why people classify Perl as an agile text-
handler (in addition to obvious traits of false advertisements) is
that most of the problems to handle are more or less trivial ("system
maintenance"-type problems). For such problems Perl indeed shines. But
between having simple solutions for simple problems and having it
possible to solve complicated problems, there is a principle of having
moderately complicated solutions for moderately complicated problems.
There is no reason for Perl to be not capable of satisfying this
requirement, but currently Perl needs improvement in this regard.
?

  Xah
  xah at xahlee.org
? http://xahlee.org/



From gagsl-py2 at yahoo.com.ar  Sun Oct 21 13:15:18 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 21 Oct 2007 14:15:18 -0300
Subject: compiler module bug?
References: <7DEB606B-7856-4140-ADA9-4083EC22D380@bryant.edu>
Message-ID: <op.t0j4vshfx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 21 Oct 2007 13:36:46 -0300, Brian Blais <bblais at bryant.edu>  
escribi?:

> I am experiencing a problem with the compiler module.  Is this a bug,
> or am I doing something wrong?

I think it's a well-known fact...

> it seems like a comment at the end breaks the parse command, but not
> parseFile.  Is this reproducible by others?

The comment itself is not a problem; but the last line in the source must  
end in a newline.
See the py_compile/compileall modules as an example.

-- 
Gabriel Genellina



From cokofreedom at gmail.com  Wed Oct 24 10:44:42 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Wed, 24 Oct 2007 14:44:42 -0000
Subject: Anagrams
In-Reply-To: <1193185723.647144.302410@i13g2000prf.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
	<1193185723.647144.302410@i13g2000prf.googlegroups.com>
Message-ID: <1193237082.628005.327260@v29g2000prd.googlegroups.com>

On Oct 24, 2:28 am, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 23, 9:21 am, cokofree... at gmail.com wrote:
>
> > This one uses a dictionary to store prime values of each letter in the
> > alphabet and for each line multiple the results of the characters
> > (which is unique for each anagram) and add them to a dictionary for
> > printing latter.
>
> > def anagram_finder():
> >     primeAlpha = {'a':2, 'b':3, 'c':5, 'd':7,'e' : 11, 'f':13, 'g':17,
> > 'h':19,        \
> >                   'i':23, 'j':29, 'k':31, 'l':37, 'm':41, 'n':43, 'o':
> > 47, 'p':53,    \
> >                   'q':59, 'r':61, 's':67, 't':71, 'u':73, 'v':79, 'w':
> > 83, 'x':89,    \
> >                   'y':97, 'z':101}
> > ...
>
> A somewhat nicer start: compute primes (naively) rather than typing
> out the dictionary.
>
> import string
> from itertools import ifilter, count
>
> def anagram_finder():
>      primes = ifilter(lambda p: all(p % k for k in xrange(2, p)),
> count(2))
>      primeAlpha = dict(zip(string.lowercase, primes))
>      ...
>
> --
> Paul Hankin

Towards itertools, apart from the lib page on Python does anyone know
of good tutorials of their usage...(beyond exploring myself it would
be nice to see good examples for usage and effective combinations...)



From charlton at netplus.ch  Wed Oct 31 05:29:48 2007
From: charlton at netplus.ch (Miss Pfeffe)
Date: Wed, 31 Oct 2007 10:29:48 +0100
Subject: dynamically generating temporary files through python/cgi
Message-ID: <001d01c81ba0$950291b0$42c50d51@peps>

How do you make a python out of a banana?!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/5e014c2a/attachment.html>

From steven.bethard at gmail.com  Tue Oct 23 13:35:39 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 23 Oct 2007 11:35:39 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471da4b7$0$22586$426a34cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
Message-ID: <mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>

Bruno Desthuilliers wrote:
> Steven Bethard a ?crit :
>> Bruno Desthuilliers wrote:
>>> Steven Bethard a ?crit :
>>> (snip)
>>>> In Python, you can use property() to make method calls look like 
>>>> attribute access.  This could be necessary if you have an existing 
>>>> API that used public attributes, but changes to your code require 
>>>> those attributes to do additional calculations now.
>>>>
>>>> But if you're creating a class for the first time, it should *never* 
>>>> use property().  There's no need to retrofit anything.
>>>
>>> May I kindly disagree here ?-)
>>
>> Of course. ;-)
>>
>>> Computed attributes are IMHO not only a life-saver when it comes to 
>>> refactoring. There are cases where you *really* have - by 'design' 
>>> I'd say - the semantic of a property, but know from the start you'll 
>>> need computation (for whatever reason). Then what would be the 
>>> rationale for using explicit getters/setters ?
>>
>> I'd be interested to hear what these use cases are.
> 
> I once wrote a small ORM-like wrapper for LDAP access, and, for reasons 
> that might be obvious for anyone having worked with LDAP, I choosed to 
> keep the record values in the format used by the lower level LDAP lib 
> and let user code access them thru computed attributes (actually 
> custom-made descriptors).

But this is trying to match an existing API, the only case that I think 
you *should* be using property().

> I could also list the CS101 examples, like Shape.area, 
> Rect.bottom_right, Person.age, etc... And yes, some of these attributes 
> are obviously read-only. That doesn't prevent them from being 
> semantically *properties*, not *behaviour*.

But as I mentioned in another email here, I'd rather know which ones 
require computation, on the off chance that even the small amount of 
additional calculation matters (say, for large integers or in a very 
tight loop).

I guess as long as your documentation is clear about which attributes 
require computation and which don't...

STeVe


From bj_666 at gmx.net  Mon Oct 15 07:20:47 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 15 Oct 2007 11:20:47 GMT
Subject: Simple Text Processing Help
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
Message-ID: <5nh0oeFhiqfbU3@mid.uni-berlin.de>

On Mon, 15 Oct 2007 10:47:16 +0000, patrick.waldo wrote:

> my sample input file looks like this( not organized,as you see it):
> 200-720-7        69-93-2
> kyselina mocov?      C5H4N4O3
> 
> 200-001-8       50-00-0
> formaldehyd      CH2O
> 
> 200-002-3
> 50-01-1
> guanid?nium-chlorid      CH5N3.ClH
> 
> etc...

That's quite irregular so it is not that straightforward.  One way is to
split everything into words, start a record by taking the first two
elements and then look for the start of the next record that looks like
three numbers concatenated by '-' characters.  Quick and dirty hack:

import codecs
import re

NR_RE = re.compile(r'^\d+-\d+-\d+$')

def iter_elements(tokens):
    tokens = iter(tokens)
    try:
        nr_a = tokens.next()
        while True:
            nr_b = tokens.next()
            items = list()
            for item in tokens:
                if NR_RE.match(item):
                    yield (nr_a, nr_b, ' '.join(items[:-1]), items[-1])
                    nr_a = item
                    break
                else:
                    items.append(item)
    except StopIteration:
        yield (nr_a, nr_b, ' '.join(items[:-1]), items[-1])



def main():
    in_file = codecs.open('test.txt', 'r', 'utf-8')
    tokens = in_file.read().split()
    in_file.close()
    for element in iter_elements(tokens):
        print '|'.join(element)

Ciao,
	Marc 'BlackJack' Rintsch


From gneuner2/ at /comcast.net  Sat Oct 20 22:41:04 2007
From: gneuner2/ at /comcast.net (George Neuner)
Date: Sat, 20 Oct 2007 22:41:04 -0400
Subject: Distributed RVS, Darcs, tech love
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<1192929647.405490.318720@v29g2000prd.googlegroups.com>
Message-ID: <kjelh35gcbhbs49hg33tsc5iojaep9c817@4ax.com>

On Sun, 21 Oct 2007 01:20:47 -0000, Daniel Pitts
<googlegroupie at coloraura.com> wrote:

>On Oct 20, 2:04 pm, llothar <llot... at web.de> wrote:
>> > I love math. I respect Math. I'm nothing but a menial servant to
>> > Mathematics.
>>
>> Programming and use cases are not maths. Many mathematics are
>> the worst programmers i've seen because they want to solve things and
>> much more often you just need heuristics. Once they are into exact
>> world they loose there capability to see the factor of relevance in
>> algorithms.
>>
>> And they almost never match the mental model that the average
>> user has about a problem.
>
>I read somewhere that for large primes, using Fermat's Little Theorem
>test is *good enough* for engineers because the chances of it being
>wrong are less likely than a cosmic particle hitting your CPU at the
>exact instant to cause a failure of the same sort.  This is the
>primary difference between engineers and mathematicians.

An attractive person of the opposite sex stands on the other side of
the room.  You are told that your approach must be made in a series of
discrete steps during which you may close half the remaining distance
between yourself and the other person.

Mathematician: "But I'll never get there!"

Engineer: "I'll get close enough."


--
for email reply remove "/" from address


From bignose+hates-spam at benfinney.id.au  Tue Oct 16 03:50:55 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 17:50:55 +1000
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
Message-ID: <873awb5wgw.fsf@benfinney.id.au>

juan at juanreyero.com writes:

> I am happy to announce the first release of magnitude, a library for
> computing with physical quantities. It is released under the Apache
> v. 2 license.

Thanks for this module, it will be good to have a standard place for
these constants.

> Home page: http://juanreyero.com/magnitude/ 
> 
> Feedback is appreciated.

Please don't ever recommend 'from foo import *' in end-user
documentation. It's generally a bad practice and should only be done
when the individual programmer understands the tradeoffs involved;
putting it in the documentation for a module is setting a poor
example.

When 'from foo import *' is used, I have to keep scanning back and
forth to see whether any given name that I don't recognise is defined
elsewhere in the code, or whether it's not mentioned anywhere and by
implication came in with the 'from foo import *'.

It is especially bad for someone attempting to learn how to use a
module from the examples. When attempting to read the documentation
for a module to understand what it provides, I want the namespace to
be explicit, so I can immediately see which things are part of the
module I'm trying to learn about, and which are not.

-- 
 \         "I'm beginning to think that life is just one long Yoko Ono |
  `\   album; no rhyme or reason, just a lot of incoherent shrieks and |
_o__)                                   then it's over."  -- Ian Wolff |
Ben Finney


From paul.hankin at gmail.com  Thu Oct 25 19:57:56 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 25 Oct 2007 23:57:56 -0000
Subject: Delete all not allowed characters..
In-Reply-To: <13i28ainu6evk7e@corp.supernews.com>
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
	<pan.2007.10.25.15.42.34.428907@vscht.cz>
	<13i1m1idi8f2r46@corp.supernews.com>
	<pan.2007.10.25.21.23.36.955922@vscht.cz>
	<13i28ainu6evk7e@corp.supernews.com>
Message-ID: <1193356676.894495.181990@o80g2000hse.googlegroups.com>

On Oct 26, 12:05 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Thu, 25 Oct 2007 23:23:37 +0200, Michal Bozon wrote:
> >> Repeatedly adding strings together in this way is about the most
> >> inefficient, slow way of building up a long string. (Although I'm sure
> >> somebody can come up with a worse way if they try hard enough.)
>
> >> Even though recent versions of CPython have a local optimization that
> >> improves the performance hit of string concatenation somewhat, it is
> >> better to use ''.join() rather than add many strings together:
>
> > String appending is not tragically slower, for strings long tens of MB,
> > the speed makes me a difference in few tens of percents, so it is not
> > several times slower, or so
>
> That is a half-truth.
>
> Because strings are immutable, when you concat two strings Python has to
> duplicate both of them. This leads to quadratic-time behaviour, where the
> time taken is proportional to the SQUARE of the number of characters.
> This rapidly becomes very slow.
>
> *However*, as of Python 2.4, CPython has an optimization that can detect
> some types of string concatenation and do them in-place, giving (almost)
> linear-time performance. But that depends on:
>
> (1) the implementation: it only works for CPython, not Jython or
> IronPython or other Python implementations;
>
> (2) the version: it is an implementation detail introduced in Python 2.4,
> and is not guaranteed to remain in future versions;
>
> (3) the specific details of how you concat strings: s=s+t will get the
> optimization, but s=t+s or s=s+t1+t2 will not.
>
> In other words: while having that optimization in place is a win, you
> cannot rely on it. If you care about portable code, the advice to use
> join() still stands.
>
> [snip]
>
> > Nice, I did not know that string translation exists, but Abandoned have
> > defined allowed characters, so making a translation table for the
> > unallowed characters, which would take nearly complete unicode character
> > table would be inefficient.
>
> The cost of building the unicode translation table is minimal: about 1.5
> seconds ONCE, and it is only a couple of megabytes of data:
>
> >>> allowed = u'+0123456789 ????????????' \
>
> ... u'ACBEDGFIHKJMLONQPSRUTWVYXZacbedgfihkjmlonqpsrutwvyxz'
>
> >>> timer = timeit.Timer('not_allowed = [i for i in range(0x110000) if
>
> unichr(i) not in allowed]; TABLE = dict(zip(not_allowed, u" "*len
> (not_allowed)))', 'from __main__ import allowed')
>
> >>> timer.repeat(3, 10)
>
> [18.267689228057861, 16.495684862136841, 16.785034894943237]
>
> The translate method runs about ten times faster than anything you can
> write in pure Python. If Abandoned has got as much data as he keeps
> saying he has, he will save a lot more than 1.5 seconds by using
> translate compared to relatively slow Python code.

String translate runs 10 times faster than pure python: unicode
translate isn't anywhere near as fast as it has to look up each
character in the mapping dict.

import timeit

timer = timeit.Timer("a.translate(m)", setup = "a = u'abc' * 1000; m =
dict((x, x) for x in range(256))")

print timer.repeat(3, 10000)

[2.4009871482849121, 2.4191598892211914, 2.3641388416290283]


timer = timeit.Timer("a.translate(m)", setup = "a = 'abc' * 1000; m =
''.join(chr(x) for x in range(256))")

print timer.repeat(3, 10000)

[0.12261486053466797, 0.12225103378295898, 0.12217879295349121]


Also, the unicode translation dict as given doesn't work on
character's that aren't allowed: it should map ints to ints rather
than ints to strings.

Anyway, there's no need to pay the cost of building a full mapping
dict when most of the entries are the same. Something like this can
work:

from collections import defaultdict

def clear(message):
    allowed = u'abc...'
    clear_translate = defaultdict(lambda: ord(u' '))
    clear_translate.update((c, c) for c in map(ord, allowed))
    return message.translate(clear_translate)

--
Paul Hankin



From raffaele.salmaso at gmail.com  Sun Oct 14 13:08:47 2007
From: raffaele.salmaso at gmail.com (Raffaele Salmaso)
Date: Sun, 14 Oct 2007 17:08:47 GMT
Subject: Python on imac
In-Reply-To: <1i5yujj.1kardau10904n1N%aleax@mac.com>
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<fes99k$o4$1@daisy.noc.ucla.edu>
	<1i5yujj.1kardau10904n1N%aleax@mac.com>
Message-ID: <61v9u4-o33.ln1@news.marvin.home>

Alex Martelli wrote:
> I use Mac OSX 10.4 and this assertion seems unfounded -- I can't see any
> wx as part of the stock Python (2.3.5).  Maybe you mean something else?
Very old version, see
/System/Library/Frameworks/Python.framework/Versions/2.3/Extras/lib/python/wx-2.5.3-mac-unicode


From timr at probo.com  Mon Oct  8 01:46:28 2007
From: timr at probo.com (Tim Roberts)
Date: Mon, 08 Oct 2007 05:46:28 GMT
Subject: Top Programming Languages of 2013
References: <mailman.1621.1191737112.2658.python-list@python.org>
	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>
	<47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <0vgjg3t1ki05lsgigio0csdjnacgri8mlq@4ax.com>

Wildemar Wildenburger <lasses_weil at klapptsowieso.net> wrote:
> 
>import friends
>import sex
>
>try:
>     sex.have()
>except ErrectionError, PrematureError:
>     pass
>finally:
>     sex.brag(friends)

Well, if "ErrectionError" ever becomes a real exception, I certainly get a
boatload of email every day from people offering to help me deal with it.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From jcd at sdf.lonestar.org  Mon Oct  1 09:57:46 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 1 Oct 2007 09:57:46 -0400
Subject: Select as dictionary...
In-Reply-To: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
Message-ID: <20071001135746.GA12995@sdf.lonestar.org>

On Mon, Oct 01, 2007 at 06:32:07AM -0700, Besturk.Net Admin wrote regarding Select as dictionary...:
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> print links
> 
> and result
> [(1, 5), (2,5).......] (2 million result)
> 
> I want to see this result directly as a dictionary:
> 
> {1: 5, 2: 5 .....}
> 
> How do i select in this format ?
> 
Try this:

aia.execute("SELECT id, w from list")
links=aia.fetchall()
linkdict = dict()
for k,v in links:
    linkdict[k] = v
print linkdict


Cheers,
Cliff


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 23 16:19:47 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 23 Oct 2007 22:19:47 +0200
Subject: New module for method level access modifiers
In-Reply-To: <mailman.389.1193167649.13605.python-list@python.org>
References: <1193159299.190539.136450@z24g2000prh.googlegroups.com>	<471e43ad$0$21451$426a34cc@news.free.fr>
	<mailman.389.1193167649.13605.python-list@python.org>
Message-ID: <471e5795$0$26779$426a34cc@news.free.fr>

J. Clifford Dyer a ?crit :
> On Tue, Oct 23, 2007 at 08:54:52PM +0200, Bruno Desthuilliers wrote
> regarding Re: New module for method level access modifiers:
> 
>> TimeHorse a ?crit :
>> 
>>> I have started work on a new module that would allow the
>>> decoration of class methods to restrict access based on calling
>>> context. Specifically, I have created 3 decorators named public,
>>> private and protected.
>> 
>> Lord have mercy.
>> 
> 
> 
> I invented a new decorator too.  It gets rid of many of the
> limitations of python, including duck typing and hideously flat
> namespaces.  It's used kind of like this:
> 
> @java 
 > def public_com.sun.lord.have.mercy():
 >     pass
> 
> Implementation forthcoming...

keyboard !-)


From ilochab at gmail.com  Thu Oct 11 06:17:13 2007
From: ilochab at gmail.com (ilochab at gmail.com)
Date: Thu, 11 Oct 2007 10:17:13 -0000
Subject: Py2exe with PyQt4 and sqlite
Message-ID: <1192097833.135366.49780@v3g2000hsg.googlegroups.com>

I wrote an application that uses PyQt4 to access a sqlite DB.

Now I'm trying to convert it using py2exe and I found some problems.
The last one, that I'm not able to avoid, is that when I launch the
application's binary on a PC (that contains only a Python 2.5
installation and no QT4) I get an error trying to open the DB withi
this code:

db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName(defines.DB_FILE)
if not db.open():
    # displays:
                   Driver not loaded.

I made many attempts changing options in my setup file but none of
them successfull.
The last one uses this options:

      options={"py2exe": {"includes":["sip",  'PyQt4.QtSql' ],
                          "packages": ["sqlite3",]}}

but I verified that neither QtSql, neither sqlite3 are usefull to
avoid the error.

My development configuration is
Python 2.5
Qt4      4.2.2
PyQt    4.1.1

Any suggestion to solve this problem?

Thanks in advance.

Ciao.
Licia.



From foo at bar.biz  Tue Oct  9 02:09:52 2007
From: foo at bar.biz (.)
Date: 09 Oct 2007 06:09:52 GMT
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <470b1b30$0$11022$4c368faf@roadrunner.com>

On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:

> Again I am depressed to encounter a fundamentally new concept that I
> was all along unheard of. Its not even in paul graham's book where i
> learnt part of Lisp. Its in Marc Feeley's video.
> 
> Can anyone explain:
> 
> (1) its origin
One of the lambda papers, I think.  I don't remember which.

> (2) its syntax and semantics in emacs lisp, common lisp, scheme
elisp and Common Lisp don't have them (although sbcl and maybe others user
continuations internally).  In scheme CALL-WITH-CURRENT-CONTINUATION takes
a function of one argument, which is bound to the current continuation. 
Calling the continuation on some value behaves like
CALL-WITH-CURRENT-CONTINUATION returning that value.  So 
 (call/cc (lambda (k) (k 42))) => 42
You can think of it as turning the whatever would happen after call/cc
was called into a function.  The most practical use for continuations in
implementing control structures, though there are some other neat tricks
you can play with them.

> (3) Is it present in python and java ?
Certainly not Java, I dunno about Python.  I've never seen someone use
them in Python, but the pythonistas seem to want to add everything but a
decent lambda to their language so I wouldn't be surprised if someone had
added a call/cc.  Ruby has it.

> (4) Its implementation in assembly. for example in the manner that
> pointer fundamentally arises from indirect addressing and nothing new.
> So how do you juggle PC to do it.
You have Lisp in Small Pieces.  Read Lisp in Small Pieces.

> (5) how does it compare to and superior to a function or subroutine
> call. how does it differ.
You use them like a function call.  You can also use them like
setjmp/longjmp in C.  You can implement coroutines with them, or
events, or simulate non-determinism or write things like ((call/cc call/cc)
(call/cc call/cc)) and make your head explode, use it like goto's inbred
second cousin or in general whatever perverse things you might like to do
with the flow of control in your program. 

> 
> Thanks a lot.
> 
> (6) any good readable references that explain it lucidly ?

Lisp in Small Pieces for implementation details,  the Scheme Programming
Language for examples.


From adam at krusty.madoff.com  Wed Oct  3 13:04:37 2007
From: adam at krusty.madoff.com (Adam Lanier)
Date: Wed, 03 Oct 2007 13:04:37 -0400
Subject: Class design question
Message-ID: <1191431077.19400.20.camel@skinner.madoff.com>

Relatively new to python development and I have a general question
regarding good class design.

Say I have a couple of classes:

	Class Foo:
	    params = [ ]
	    __init__( self, param ):
		...

	Class Bar:
	    data = None
	    __init__( self, data ):
		...

The class is going to be a wrapper around a list of Bars() (among other
things).  I want the ability to pass to the constructor of Foo either:
	a string 		'baz'
	a Bar object 		Bar( 'baz' )
	a list of strings and/or bars ( 'baz', Bar( 'something else' ))


Am I going to have to use isinstance() to test the parameter to __init__
to see what type of data I'm passing in, i.e.,

	Class Foo:
	    params = [ ]
	    __init__( self, param ):
		if isinstance( param, list ):
		    for p in param:
			addParam( p )
		elif isinstance( param, str):
		    addParam( param )

	    addParam( self, param ):
		if isinstance( param, Bar ):
			self.params.add( param )
		elif isinstance( param, str ):
			self.params.add( Bar( param ))
	    	else:
			raise TypeError( "wrong type of input" )

Am I missing something here or is there a more Pythonic way to
accomplish this?



From aleax at mac.com  Sun Oct 14 14:11:03 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 14 Oct 2007 11:11:03 -0700
Subject: Python on imac
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<fes99k$o4$1@daisy.noc.ucla.edu>
	<1i5yujj.1kardau10904n1N%aleax@mac.com>
	<61v9u4-o33.ln1@news.marvin.home>
Message-ID: <1i5yzhq.19hs10hfjtk63N%aleax@mac.com>

Raffaele Salmaso <raffaele.salmaso at gmail.com> wrote:

> Alex Martelli wrote:
> > I use Mac OSX 10.4 and this assertion seems unfounded -- I can't see any
> > wx as part of the stock Python (2.3.5).  Maybe you mean something else?
> Very old version, see
> /System/Library/Frameworks/Python.framework/Versions/2.3/Extras/lib/python
> /wx-2.5.3-mac-unicode
>

Ah, I see it now, thanks.


Alex


From lukasz.f24 at gmail.com  Fri Oct 19 06:39:27 2007
From: lukasz.f24 at gmail.com (lukasz.f24 at gmail.com)
Date: Fri, 19 Oct 2007 03:39:27 -0700
Subject: dynamic invoke
Message-ID: <1192790367.342435.243930@v29g2000prd.googlegroups.com>

Hello,

Is there any way (other then eval) to invoke a method by passing
method name in a string.
It's very simple in php:
$oFoo = new Foo();
$dynamiMethod = "bar";
$oFoo->$dynamiMethod();

Unfortunately I can't find a good solution to do the same thing in
python. Does it have some build-in function to do it?

Kind Regards,

Lukasz.



From dfabrizio51 at gmail.com  Tue Oct 30 17:25:06 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Tue, 30 Oct 2007 14:25:06 -0700
Subject: why did these companies choose Tcl over Python
Message-ID: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>

Hello,

As an electronics engineer I use some very expensive EDA CAD tool
programs that are scriptable using Tcl.  I was wondering why these
companies have choose to use Tcl instead of Python.   Some of these
are:

   Mentor Graphics ModelTech VHDL and Verilog simulator
   Synopsys  Design Compiler and Primetime Static Timing Analyzer
   Actel FPGA tools.

Tcl seems to very popular in my business as the scripting language of
choice.

I'm in the process of deciding to use Tcl or Python for a CAD tool
program that I have been working on.    Most of the core of the
program,  the database,   will be done is C as an extension to either
Tcl or Python,   but I intend to use Tk or wxPthon for the GUI.   I do
need publishing quality outputs from drawings done on a graphics
device that are scaled to standard printer paper sizes.


I would prefer to use Python but can't deny how popular Tcl is,  as
mentioned above,  so my question is why wasn't Python selected by
these companies as the choice of scripting languages for their
product?

Are there any obvious advantages like:

    performance,
    memory footprint,
    better cross-platform support,
    ease of use,


Thanks in advance for your thoughts about this.



From besturk at gmail.com  Fri Oct  5 10:27:39 2007
From: besturk at gmail.com (Abandoned)
Date: Fri, 05 Oct 2007 07:27:39 -0700
Subject: remove list elements..
Message-ID: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>

Hi..
I have a problem..
list1=[11, 223, 334, 4223...] 1 million element
list2=[22,223,4223,2355...] 500.000 element

I want to difference list1 to list2 but order very importent..

My result must be:
list3=[11,334,...]

I do this use FOR easly but the speed very imported for me. I want to
the fastest method please help me.

I'm sorry my bad english.

King regards..



From exarkun at divmod.com  Wed Oct 31 11:52:44 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 31 Oct 2007 10:52:44 -0500
Subject: Python bug tracker now secret?
In-Reply-To: <4728A278.9080804@v.loewis.de>
Message-ID: <20071031155244.8162.977210918.divmod.quotient.30148@ohm>

On Wed, 31 Oct 2007 16:42:48 +0100, "\"Martin v. L?wis\"" <martin at v.loewis.de> wrote:
>> I don't know why they chose to make the sf tracker private.  Maybe that
>> was the only way to remove write access.
>
>That, plus removing it means that people won't browse outdated information.
>

Though it also means all old links are broken and there's no obvious pointer to
the new information.

Jean-Paul


From byte8bits at gmail.com  Wed Oct 10 17:13:36 2007
From: byte8bits at gmail.com (brad)
Date: Wed, 10 Oct 2007 17:13:36 -0400
Subject: I'm starting to think like a Pythonista
In-Reply-To: <mailman.46.1192049578.927.python-list@python.org>
References: <fejah0$lkk$1@solaris.cc.vt.edu>
	<mailman.46.1192049578.927.python-list@python.org>
Message-ID: <fejfa5$qte$3@solaris.cc.vt.edu>

Erik Jones wrote:

> big_evens = range(10, 100, 2)
> big_odds = range(11, 100, 2)

Neat, but not as clever or as hard to read as mine... I'll bet it faster 
though... maybe not.

The upto part is here:

ok_numbers = low_odds + big_evens + [x for x in low_evens if x <= y]



From gagsl-py2 at yahoo.com.ar  Thu Oct 18 23:11:18 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 00:11:18 -0300
Subject: Noob: Loops and the 'else' construct
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
Message-ID: <op.t0fcg4jrx6zn5v@gabriel2.softlabbsas.com.ar>

En Thu, 18 Oct 2007 23:44:27 -0300, Ixiaus <parnell.s at comcast.net>  
escribi?:

> I have just come across a site that discusses Python's 'for' and
> 'while' loops as having an (optional) 'else' structure.
>
> At first glance I interpreted it as being a bit like the 'default'
> structure in PHP's switch block... But the switch block isn't a loop,
> so, I am now confused as to the reason for using 'else' with the for
> and while loops...
>
> A few quick tests basically show that statements in the else structure
> are executed at the fulfillment of the loop's expression (ie, no
> break).

A `while` loop tests a condition: if it evaluates to true, keep cycling;  
if it is false, stop. The `else` clause is executed when the condition is  
false, as in any `if` statement. If you exit the loop by using `break`,  
the `else` part is not executed (because you didn't get out of the loop by  
determining the condition falseness)

You can think of a `for` loop as meaning `while there are remaining  
elements to be iterated, keep cycling` and the `else` clause applies when  
there are no more elements. A `break` statement does not trigger the else  
clause because the iteration was not exhausted.

Once you get the idea, it's very simple.

-- 
Gabriel Genellina



From hniksic at xemacs.org  Fri Oct 19 09:12:14 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Fri, 19 Oct 2007 15:12:14 +0200
Subject: class vs type
References: <mailman.208.1192798489.13605.python-list@python.org>
Message-ID: <87wstjtfip.fsf@mulj.homelinux.net>

"Colin J. Williams" <cjw at sympatico.ca> writes:

> In Python Types and Objects, Shalabh Chaturvedi says (in the Python
> 3.0 documentation - New Style Classes)
>
> "The term class is traditionally used to imply an object created by
> the class statement. However, classes are now synonymous with
> types. Built-in types are usually not referred to as classes. This
> book prefers using the term type for both built-in and user created
> types."
>
> Do we need two different words to describe what is essentially the
> same thing?

We don't, not anymore, which is why the author chooses the word "type"
for both in the last sentence.

But, as the author correctly explains, class and type used to not be
the same thing.  Classes were created with 'class', and they were
fundamentally different from C types created in extension modules.
All instances of old-style classes are of type 'instance', which is
why they have the __class__ attribute, so you can find their actual
class.  (Functions like "isinstance" contain hacks to support
old-style classes.)  New-style classes elevate Python-level classes to
types equal to the built-in ones, which is why the word "type" is now
sufficient for both.


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 15:10:41 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 16 Oct 2007 21:10:41 +0200
Subject: Simple HTML template engine?
In-Reply-To: <Xns99CA56F79D96Fapc@10.15.188.42>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<Xns99CA56F79D96Fapc@10.15.188.42>
Message-ID: <47150ce8$0$26767$426a74cc@news.free.fr>

Adrian Cherry a ?crit :
> "allen.fowler" <allen.fowler at yahoo.com> wrote in
> news:1192419411.895715.138450 at e9g2000prf.googlegroups.com: 
> 
> 
>>Hello,
>>
>>Can anyone recommend a simple python template engine for
>>generating HTML that relies only on the Pyhon Core modules?
>>
>>No need for caching, template compilation, etc.
>>
>>Speed is not a major issue.
>>
>>I just need looping and conditionals. Template inheritance
>>would be a bonus.
>>
>>I've seen Genshi and Cheetah, but they seem way too complex.
>>
>>Any ideas?
>>
> 
> 
> Did you try Cheetah? 

Did you read the OP's question ?-)


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 18 18:21:53 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 22:21:53 -0000
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<1192718860.391481.139090@v29g2000prd.googlegroups.com>
	<mailman.179.1192727139.13605.python-list@python.org>
Message-ID: <13hfn417kkfni58@corp.supernews.com>

On Thu, 18 Oct 2007 14:05:34 -0300, Sebastian Bassi wrote:

> On 10/18/07, Adam Atlas <adam at atlas.st> wrote:
>>
>> Use the builtin function "eval".
> 
> What is the difference with os.system()?

Everything.

eval() evaluates Python expressions like "x.append(2+3)".

os.system() calls your operating system's shell with a command.


-- 
Steven.



From roy at panix.com  Wed Oct 31 10:23:55 2007
From: roy at panix.com (Roy Smith)
Date: Wed, 31 Oct 2007 10:23:55 -0400
Subject: why did these companies choose Tcl over Python
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <roy-A605DC.10235431102007@news.panix.com>

chewie54 <dfabrizio51 at gmail.com> wrote:

> I would prefer to use Python but can't deny how popular Tcl is,  as
> mentioned above,  so my question is why wasn't Python selected by
> these companies as the choice of scripting languages for their
> product?
> 
> Are there any obvious advantages like:
> 
>     performance,
>     memory footprint,
>     better cross-platform support,
>     ease of use,

I used to work on a project which was written mostly in Tcl.  Not a huge 
project, but not a trivial one either.  Perhaps a few 10's of KLOC over 100 
Tcl source files.  The domain was network monitoring using SNMP.  No 
graphics.  We also used a commercially available network simulator (Mimic) 
which was written in Tcl (or, at least, has Mimic as its scripting 
language).

For us, the biggest thing was the quick learning curve (i.e. ease of use).  
Most of the programmers on the team were network jocks, not programmers.  
Getting them up to speed on enough Tcl to do their jobs was very quick.  
Performance was not an issue, since the application was rate limited by the 
network (i.e. waiting for SNMP replies to come back).

We also had lots of hooks into C code.  Doing that is trivial in Tcl.  Yes, 
I know you can extend/embed Python, but it's a LOT easier in Tcl.  
Embedding a Tcl interpreter in a C program is literally one line of code.  
I sat down with the book to figure out how to do it, and had a running 
interpreter going in 10 minutes.  Part of what makes it so easy is that 
everything in Tcl is a string (no need to support multiple data types).

I don't think I would want to write a huge system in Tcl.  For one thing, 
it's not object oriented (I have no direct experience with incr Tcl, so 
that may not be a fair critisism).  It's also slow (even slower than 
Python).  Of course, in both Tcl and Python, the key to a fast application 
is to do all the CPU-intensive parts in C and just script the glue code.

Anyway, I like Tcl.  It's certainly worth considering seriously as a 
scripting language.  As for "which is better, Tcl or Python", there's no 
one right answer to that.  Evaluate both and decide which fits your needs 
better.  Often, questions like that will be decided by things which have 
little to do with language technology.  Is your company re-organizing and 
there's a development group who are used to working in language X who are 
looking for a new project?  Guess which language they're going to pick?  
Got a major customer (or prospect) who expresses an interest in language X 
for scripting extensions?  Guess which language you're going to use?


From rcdailey at gmail.com  Fri Oct 19 19:29:03 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Fri, 19 Oct 2007 18:29:03 -0500
Subject: __main__ : What is this?
Message-ID: <496954360710191629x3fc82871s334f15c2d5a48530@mail.gmail.com>

Hi,

I've read various portions of the Python 2.5 documentation in an
attempt to figure out exactly what the following condition represents:

if __name__ == "__main__":
    main()

However, I was not able to determine what it is actually checking for.
Could someone point me in the way of a tutorial or explain this for
me? Thanks.


From martin at marcher.name  Fri Oct 12 18:02:18 2007
From: martin at marcher.name (Martin Marcher)
Date: Sat, 13 Oct 2007 00:02:18 +0200
Subject: test if email
In-Reply-To: <13gvqvb6shueveb@corp.supernews.com>
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
	<feoni6$h74$02$1@news.t-online.com>
	<13gvqvb6shueveb@corp.supernews.com>
Message-ID: <5fa6c12e0710121502v30621fd5m6ee90a1c5df494b2@mail.gmail.com>

2007/10/12, Grant Edwards <grante at visi.com>:
> On 2007-10-12, Florian Lindner <Florian.Lindner at xgm.de> wrote:
>
> > I was just asking for the correct syntax of the mail address. I know about
> > the various problems actually impossibility to test for a live and valid
> > address.
>
> Don't forget to allow uucp style "bang" addresses.  :)

no need to get there most forms won't accept the new top level domains (.name).

No need to speek of plus addressing or older messaging systems.

Heck just check for an "@" and try to deliver it. (if there's no @ you
should know wether it's a local user or not....)

hth
martin

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From jcd at sdf.lonestar.org  Mon Oct 29 13:29:41 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 29 Oct 2007 13:29:41 -0400
Subject: two files into an alternate list
In-Reply-To: <aa405c1f0710290920v5c548269p24762e41790216cb@mail.gmail.com>
References: <aa405c1f0710290920v5c548269p24762e41790216cb@mail.gmail.com>
Message-ID: <20071029172941.GC3648@sdf.lonestar.org>

That depends:

What do you want when you have these two files:

file 1:
a
b
c

file 2:
1
2
3
4
5

Options: 
*['a',1,'b',2,'c',3,None,4,None,5]
*['a',1,'b',2,'c',3,4,5]
*['a',1,'b',2,'c',3]
*Throw an exception

And what if file 1 has more lines than file 2?

Cheers,
Cliff
1
On Mon, Oct 29, 2007 at 09:50:51PM +0530, Beema shafreen wrote regarding two files into an alternate list:
> Delivered-To: python-list at bag.python.org
> Date: Mon, 29 Oct 2007 21:50:51 +0530
> From: "Beema shafreen" <beema.shafreen at gmail.com>
> To: python-list at python.org
> Subject: two files into an alternate list
> Precedence: list
> List-Id: General discussion list for the Python programming language
> 	<python-list.python.org>
> List-Unsubscribe: <http://mail.python.org/mailman/listinfo/python-list>,
> 	<mailto:python-list-request at python.org?subject=unsubscribe>
> List-Archive: <http://mail.python.org/pipermail/python-list>
> List-Post: <mailto:python-list at python.org>
> List-Help: <mailto:python-list-request at python.org?subject=help>
> List-Subscribe: <http://mail.python.org/mailman/listinfo/python-list>,
> 	<mailto:python-list-request at python.org?subject=subscribe>
> Errors-To: python-list-bounces+jcd=sdf.lonestar.org at python.org
> 
>    hi everybody ,
>        i have a file :
>             file 1:
>    1
>    2
>    3
>    4
>    5
>    6
>    file2:
>    a
>    b
>    c
>    d
>    e
>    f
>    how do i make the two files into  list like this =
>    [1,a,2,b,3,c,4,d,5,e,6,f]
>    regards
>    shafreen

> -- 
> http://mail.python.org/mailman/listinfo/python-list


From mensanator at aol.com  Mon Oct 22 19:05:48 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 16:05:48 -0700
Subject: for loop
In-Reply-To: <1193092630.751179.198560@q5g2000prf.googlegroups.com>
References: <mailman.347.1193091482.13605.python-list@python.org>
	<5o4m5kFktnthU6@mid.uni-berlin.de>
	<1193092630.751179.198560@q5g2000prf.googlegroups.com>
Message-ID: <1193094348.431443.237740@q3g2000prf.googlegroups.com>

On Oct 22, 5:37 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> On Oct 22, 5:22 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
>
>
>
>
> > On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:
> > > #Intro
> > >     print "*********************************************"
> > >     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
> > >     print "*********************************************"
>
> > >     print "This program will predict the size of a population of organisms."
> > >     print
> > >     print
> > >     organisms=input("Please enter the starting number of organisms: ")
>
> > >     increase=input("Please enter the average daily population increase
> > > as a percentage (20% = .20): ")
>
> > >     days=input("Please enter the number of days that they will multiply: ")
>
> > > print "         Day                                    Population"
> > > print "----------------------------------------------------------"
>
> > > for p in range (days):
>
> > >     population = organisms * population * increase
>
> > >     print days,
>
> > >     print "\t\t\t\t",population
>
> > > I'm having problems with my for loop here to calculate estimated
> > > population output to a table.  Instead of knowing how much I want to
> > > loop it, the loop index is going to be whatever number of days the user
> > > enters.  When I run my program, it asks the 3 questions above but then
> > > just dead stops at a prompt which leads me to believe there's something
> > > wrong with my loop.
>
> > It should not run at all as it is indented inconsistently.  If that
> > problem is corrected it will stop with a `NameError` because you try to
> > read `population` before anything was assigned to it.
>
> > Ciao,
> >         Marc 'BlackJack' Rintsch
>
> Also, I would guess that you want to print p, not days

Oh, and your calculation is incorrect. You don't multiply by
organisms in every loop iteration, organisms is the initial
value of population, so you can solve the "Name" error by doing
population = organisms before the for..loop.

And since you're asking for an increase, you don't multiply by the
percent (as that would decrease the population), but instead by
1+increase.

Also, does day==0 represent the first day of increase or the
initial value? One would normally expect day==0 to be the initial
value, but as written, day==0 is the first day of increase. I
would use xrange(1,days+1) instead.

Lastly, you can't have a fraction of an organism, right? You might
want to print your floating point population rounded to an integer.

population = organisms
for p in xrange(1,days+1):
  population = population * (1 + increase)
  print p,
  print "\t\t\t\t%0.0f" % (population)

##  *********************************************
##  WELCOME TO THE POPULATION GROWTH CALCULATOR
##  *********************************************
##  This program will predict the size of a population of organisms.
##
##
##  Please enter the starting number of organisms: 100
##  Please enter the average daily population increase as a percentage
(20% = .20): 0.25
##  Please enter the number of days that they will multiply: 8
##           Day                                    Population
##  ----------------------------------------------------------
##  1 				125
##  2 				156
##  3 				195
##  4 				244
##  5 				305
##  6 				381
##  7 				477
##  8 				596




From bdesth.quelquechose at free.quelquepart.fr  Mon Oct  1 16:32:38 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 22:32:38 +0200
Subject: slice last 4 items from a list
In-Reply-To: <fdrl81$13c$1@solaris.cc.vt.edu>
References: <fdrl81$13c$1@solaris.cc.vt.edu>
Message-ID: <470159a2$0$1866$426a74cc@news.free.fr>

brad a ?crit :
> Is this the correct way to slice the last 4 items from a list?
> 
> x = [1,2,3,4,5,6,7,8,9]
> print x[-4:]
> 
> It works, but is it Pythonic?

Is there a more obvious (for a pythonic definition of 'obvious') way to 
do it ? If no, then it's pythonic... Now FWIW, I usually use 
'esrever'[::-1] to reverse a string, so I may not be a reference !-)


From bik.mido at tiscalinet.it  Wed Oct 24 11:01:01 2007
From: bik.mido at tiscalinet.it (Michele Dondi)
Date: Wed, 24 Oct 2007 17:01:01 +0200
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
References: <471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<COednczU5fsEPYHanZ2dnUVZ_oTinZ2d@comcast.com>
Message-ID: <bsmuh395c84agrgk0g8juiflq4g72r6s8a@4ax.com>

On Mon, 22 Oct 2007 09:07:37 -0400, Lew <lew at lewscanon.com> wrote:

>Xah Lee wrote:
>> i have written ... No coherent argument, 

I've long killfiled XL to the effect that all of his threads are
ignored altogether, since the guy is "nice" enough to only take part
to his own rants, but occasionally some posts slip out and now from
the Subject I infer that the new target for his hate is TeX, which
makes me wonder, given his views on Perl (and "unixisms in general"
iirc) what our "friend" would think about such a wonderful tool as
PerlTeX - from his POV certainly a synergy between two of the worst
devil's devices.  :)


Michele
-- 
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}->(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^<R<Y]*YB='
.'KYU;*EVH[.FHF2W+#"\Z*5TI/ER<Z`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:"\r";print,redo}#JAPH,


From mlongjr at verizon.net  Sat Oct 27 00:55:03 2007
From: mlongjr at verizon.net (Junior)
Date: Sat, 27 Oct 2007 04:55:03 GMT
Subject: delineating by comma where commas inside quotation marks don't
	count
References: <qJSTi.14839$na2.5524@trndny08>
	<1193278225.923337.217160@k35g2000prh.googlegroups.com>
Message-ID: <HwzUi.489$Q%3.271@trnddc04>


"Dan Bishop" <danb_83 at yahoo.com> wrote in message 
news:1193278225.923337.217160 at k35g2000prh.googlegroups.com...
> On Oct 24, 8:56 pm, "Junior" <mlon... at verizon.net> wrote:
>> I want to open a text file for reading and delineate it by comma.  I also
>> want any data
>> surrounded by quotation marks that has a comma in it, not to count the
>> commas inside the
>> quotation marks
>
> Use the csv module.
Thanks for the help! I used the csv module to write this;

import csv
reader = csv.reader(open('testfile.txt', "rb"))
for row in reader:
    print "var2= ", row[2]


The reason I didn't use the csv module is because I read this book to learn
Python,

Python Programming for the Absolute Beginner, Second Edition (For the
Absolute Beginner)
by Michael Dawson (Author),

and it did not mention the csv module it just explained how to import
modules. I also read

the tutorial that comes with python but it ends with the History and License
section.

Can you recommend a book that explains the most used modules?





From timr at probo.com  Thu Oct 25 02:24:04 2007
From: timr at probo.com (Tim Roberts)
Date: Thu, 25 Oct 2007 06:24:04 GMT
Subject: win32com.client documentation?
References: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
	<mailman.430.1193263580.13605.python-list@python.org>
Message-ID: <kid0i39ms42ifvq13ro7kduf1h7hgdaa5n@4ax.com>

"Colin J. Williams" <cjw at sympatico.ca> wrote:
>Mark Morss wrote:
>> I am a unix person, not new to Python, but new to Python programming
>> on windows.  Does anyone know where to find documentation on
>> win32com.client?  I have successfully installed this module and
>> implemented some example code.  But a comprehensive explanation of the
>> objects and methods available is nowhere to be found.  I have been
>> able to find a somewhat out-of-date O'Reilly book, nothing more.
>> 
>> I want to be able to script the creation of Excel spreadsheets and
>> Word documents, interract with Access data bases, and so forth.
>> 
>You might download  and install Mark Hammond's PythonWin.

(Ummm, win32com.client is PART of Mark Hammond's PythonWin, now called
PyWin32.)
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From cjw at sympatico.ca  Fri Oct 12 14:41:47 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Fri, 12 Oct 2007 14:41:47 -0400
Subject: Simple question about python logic.
In-Reply-To: <470F9B82.9010205@tim.thechases.com>
References: <1192203159.292973.204470@v23g2000prn.googlegroups.com>
	<470F9B82.9010205@tim.thechases.com>
Message-ID: <feof5c$c5k$1@sea.gmane.org>

Tim Chase wrote:
>> I have a file containing following data. But the dimension can be
>> different.
>>
>> A B C D E F G
>> 3 4 1 5 6 2 4
>> 7 2 4 1 6 9 3
>> 3 4 1 5 6 2 4
>> 7 2 4 1 6 9 3
>> .
>> .
>> .
>> .
>>
>> What is the best approach to make a column vector with the name such
>> as A B, etc?
> 
> 
> There are a couple different ways to go about it depending on
> 
> 1) whether just one or whether both dimensions can be different
> 2) whether you want to extract each column vector
> 
> Both of the following should allow for an arbitrary number of
> columns:
> 
> To map everything, you can do something like
> 
> #######################################
> infile = file("in.txt")
> header_row = infile.next().rstrip('\n').split()
> values = [[] for header in header_row]
> for line in infile:
>     line = line.rstrip('\n').split()
>     for dest, value in zip(values, line):
>         dest.append(value)
> infile.close()
> results = dict(zip(header_row, values))
> #######################################
> 
> 
> which you can then use with
> 
> results['A']
> 
> However, if you just want a particular column from the file and
> don't care about the rest, you can do something like
> 
> #######################################
> from itertools import islice
> 
> column_c = [
>  line.rstrip('\n').split()[2]
>  for line in islice(file('in'), 1, None)
>  ]
> #######################################
> 
> where "2" is the zero-based column offset you want (in this case,
> column C = 2)
> 
> -tkc
> 
> 
> 
Numpy appears to have this capability.

Colin W.



From nachogomez at gmail.com  Wed Oct 17 17:20:06 2007
From: nachogomez at gmail.com (=?UTF-8?Q?Ra=C3=BAl_G=C3=B3mez_C.?=)
Date: Wed, 17 Oct 2007 17:20:06 -0400
Subject: Bidirectional communication over unix socket (named pipe)
In-Reply-To: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>
References: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>
Message-ID: <684b0a740710171420k72c27080mb5402d37d5a81a9c@mail.gmail.com>

BTW: This is the original post:

Hi, I feel like I should apologize in advance because I must be missing
something fairly basic and fundamental here.  I don't have a book on
Python network programming (yet) and I haven't been able to find an
answer on the net so far.

I am trying to create a pair of programs, one (the client) will be
short-lived (fairly) and the second (server) will act as a cache for
the client. Both will run on the same machine, so I think a simple file
socket is the easiest and most reliable method.

The problem I have is that the client can send to the server, but the
server can't send back to the client because it gets this error:

socket.error: (107, 'Transport endpoint is not connected')

This is despite the client waiting on a socket.recv() statement.  Is
the client really not connected, or is the server unaware of the
connection?  And how do I fix this?

I was able to get this working by switching to AF_INET, but that is not
what I want.

Unix sockets are bidirectional, correct?  I have never programmed one,
but I know that programs like clamav use a socket to receive an email
to scan and return the result.

Any help would be greatly appreciated!

Jeff

*** server.py ***
#!/usr/bin/python
import socket
import os, os.path
import time

if os.path.exists("/tmp/mysock"): os.remove("/tmp/mysock")

server = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
server.bind("/tmp/mysock")

while True:
    datagram = server.recv(1024)
    if not datagram:
        break
    print datagram
    # the preceeding works, and I see the TEST TEST TEST statement the
client sent

    time.sleep(2)
    # it dies on the next statement.
    server.send("Thank you\n")


server.close()
if os.path.exists("/tmp/mysock"): os.remove("/tmp/mysock")


 *** client.py: ***
#!/usr/bin/python

import socket

client = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
client.connect("/tmp/mysock")


TX = "TEST TEST TEST"
TX_sent = client.send(TX)

if TX_sent <> len(TX):  print "TX incomplete"

while True:
        print "Waiting..."
        datagram = client.recv(1024)
        # the client sits here forever, I see the "waiting appear" but
it doesn't advance beyond
        #   the recv statement.
        if not datagram:
                break
        print "Received: ",datagram

client.close()



On 10/17/07, Ra?l G?mez C. <nachogomez at gmail.com> wrote:
>
> Hi Jeffrey,
>
> I've been reading the Python mailing list and I've found a post of you
> about Unix socket with Python, you've found the answer to you're problem by
> your self, but I wonder if you still has the working code and if you would
> share it?
>
> Thanks!...
>
> Raul
>
>
> On *Wed Mar 8 18:11:11 CET 2006, **J Rice* rice.jeffrey at gmail.com<python-list%40python.org?Subject=Bidirectional%20communication%20over%20unix%20socket%20%28named%20pipe%29&In-Reply-To=1141836504.118212.173060%40z34g2000cwc.googlegroups.com>wrote:
>
> > OK, never fails that I find a solution once I post a problem.
> > If I use a stream rather than a datagram, it seems to work fine.
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/22f20781/attachment.html>

From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 22 19:16:38 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 22 Oct 2007 23:16:38 -0000
Subject: calling a function from string
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
Message-ID: <13hqbqmoqe18m8e@corp.supernews.com>

On Mon, 22 Oct 2007 08:54:02 +0000, james_027 wrote:

> hi,
> 
> i have a function that I could like to call, but to make it more dynamic
> I am constructing a string first that could equivalent to the name of
> the function I wish to call. 

That is not the right solution to dynamic functions. There is a much 
better way.


> how could I do that? the string could might
> include name of the module.
> 
> for example
> 
> a_string = 'datetime.' + 'today()'
> 
> how could I call a_string as function?

Others have suggested eval() and exec. Both will work, but have MAJOR 
security implications.

The right way to work with "dynamic functions" is to remember that Python 
treats functions as first-class objects just like strings and ints and 
lists. Here's a simple example:

Suppose I have a function that takes a string and converts it to another 
object type. 

def converter(x, convert_to):
    if convert_to == 'int':
        return int(x)
    elif convert_to == 'float':
        return float(x)
    elif convert_to == 'list':
        return list(x)
    else:
        raise ValueError("don't know that type")

and then use the function like this:

my_float = converter('12.345', 'float')


That's the wrong way to do it. This is the right way:

def converter(x, convert_to):
    return convert_to(x)

my_float = converter('12.345', float)

See the subtle difference?

'float' is a string, and it has no special meaning.

float() with brackets says "call the function float".

float without brackets *is* the function float. You can pass it around 
like any other object (strings, lists, ints, etc.) and call it later.

Try this example:

import datetime, time
functions = [int, float, datetime.time, time.time]
for f in functions:
    print f()



-- 
Steven


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Oct 20 17:47:49 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 20 Oct 2007 23:47:49 +0200
Subject: vote for Python - PLEASE
References: <mailman.193.1192751640.13605.python-list@python.org>
	<13hhk968d8mf7c9@corp.supernews.com>
	<13hj10bro78ltad@corp.supernews.com>
	<5nu52fFjfiluU2@mid.individual.net>
	<5nuqkeFjnho9U1@mid.uni-berlin.de>
Message-ID: <5nvbc5FkbtcdU1@mid.individual.net>

Diez B. Roggisch wrote:
> Bjoern Schliessmann schrieb:

>> Also, why would there be telephone votings in TV if they were
>> meaningless to the default watcher? :)
> 
> Because it costs 50cent to call, which makes a useless and most of
> the time heavily biased poll a nice source of income. Or why do
> you think even the larger TV-stations show call-in-TV-shows at
> night?

You're partially right. But those are mostly no polls but lotteries
(often with tricky or ridiculously simple questions). Simple polls
are quite rare, comparatively.

Regards,


Bj?rn

-- 
BOFH excuse #301:

appears to be a Slow/Narrow SCSI-0 Interface problem



From bj_666 at gmx.net  Mon Oct 22 18:56:03 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 22:56:03 GMT
Subject: Regular Expression
References: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
Message-ID: <5o4o43FktnthU7@mid.uni-berlin.de>

On Mon, 22 Oct 2007 22:29:38 +0000, patrick.waldo wrote:

> I'm trying to learn regular expressions, but I am having trouble with
> this.  I want to search a document that has mixed data; however, the
> last line of every entry has something like C5H4N4O3 or CH5N3.ClH.
> All of the letters are upper case and there will always be numbers and
> possibly one .
> 
> However below only gave me none.
> 
> [?]
>
> test = re.compile('\u+\d+\.')

There is no '\u'.  'u' doesn't have a special meaning so the '\' is
pointless.  Your expression matches one or more small 'u's followed by one
or more digits followed by a period.  Examples are 'u1.', 'uuuuuuuu42.',
etc.

An expression that matches your first example would be: r'([A-Z]|\d|\.)+'.
That's a non-empty sequence of upper case letters, digits and periods.  To
limit this to just one optional period the expression gets a little
longer: r'([A-Z]|\d)+\.?([A-Z]|\d)+'

Does not match your second example because there is a lower case letter in
it.

Ciao,
	Marc 'BlackJack' Rintsch


From byte8bits at gmail.com  Mon Oct 29 16:25:56 2007
From: byte8bits at gmail.com (brad)
Date: Mon, 29 Oct 2007 16:25:56 -0400
Subject: A Python 3000 Question
Message-ID: <fg5fku$5c1$1@solaris.cc.vt.edu>

Will len(a_string) become a_string.len()? I was just reading

http://docs.python.org/dev/3.0/whatsnew/3.0.html

One of the criticisms of Python compared to other OO languages is that 
it isn't OO enough or as OO as others or that it is inconsistent. And 
little things such as this seem to support those arguments. Not that it 
matters really... just seems that classes with methods used in a more 
consistent manner would be more appropriate in an OO langauage. Is there 
a reason that len cannot be a method?

a_string.lower() makes sense, as does a_string.split(), 
a_string.strip()... why not a_string.len()?


From jjl at pobox.com  Wed Oct 17 16:37:25 2007
From: jjl at pobox.com (John J. Lee)
Date: Wed, 17 Oct 2007 20:37:25 GMT
Subject: negative base raised to fractional exponent
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
	<mailman.104.1192587133.13605.python-list@python.org>
	<1192622126.725230.136570@i13g2000prf.googlegroups.com>
Message-ID: <874pgpzddm.fsf@pobox.com>

schaefer.mp at gmail.com writes:
[...]
> Thank you for this. Now I need to somehow express this as a real
> number. For example, I can transform the real and imaginary parts into
> a polar coordinate giving me the value I want:
>
> z = sqrt( real_part**2 + imaj_part**2 )
>
> but this is an absolute terms. How does one determine the correct sign
> for this value?

If you mean the angle

>>> import math
>>> x = (-3 + 0j) ** (-37/9.)
>>> math.atan2(x.imag, x.real) * (180 / math.pi)
-19.99999999999995


John


From ndbecker2 at gmail.com  Wed Oct 31 07:59:32 2007
From: ndbecker2 at gmail.com (Neal Becker)
Date: Wed, 31 Oct 2007 07:59:32 -0400
Subject: help with pyparsing
Message-ID: <fg9qn5$ahv$1@ger.gmane.org>

I'm just trying out pyparsing.  I get stack overflow on my first try.  Any
help?

#/usr/bin/python

from pyparsing import Word, alphas, QuotedString, OneOrMore, delimitedList

first_line = '[' + delimitedList (QuotedString) + ']'

def main():
    string = '''[ 'a', 'b', 'cdef']'''
    greeting = first_line.parseString (string)
    print greeting

if __name__ == "__main__":
    main()

/usr/lib/python2.5/site-packages/pyparsing.py:2727: SyntaxWarning: Cannot
add element of type <type 'type'> to ParserElement
  return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
/usr/lib/python2.5/site-packages/pyparsing.py:1008: SyntaxWarning: Cannot
add element of type <type 'type'> to ParserElement
  return other + self
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/tmp/python-k3AVeY.py", line 5, in <module>
    first_line = '[' + delimitedList (QuotedString) + ']'
  File "/usr/lib/python2.5/site-packages/pyparsing.py", line 2727, in
delimitedList
    return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
  File "/usr/lib/python2.5/site-packages/pyparsing.py", line 1008, in
__radd__
    return other + self
  File "/usr/lib/python2.5/site-packages/pyparsing.py", line 1008, in
__radd__
    return other + self




From tjreedy at udel.edu  Sun Oct 28 18:12:32 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 28 Oct 2007 18:12:32 -0400
Subject: Questions for the Python Devs Out There
References: <BAY144-W251FCF59F93682657950E7CF900@phx.gbl>
Message-ID: <fg31gh$l05$1@ger.gmane.org>


"Ann Thompson" <recentcoin at hotmail.com> wrote in message 
news:BAY144-W251FCF59F93682657950E7CF900 at phx.gbl...
| If you know of places that I might be able to post queries for python
| developers, I'm certainly open to suggestions.

Many people involved with Python and gaming subscribe to the pygame mailing 
list, also accessible as gmane.comp.python.pygame 





From mail at gedankenkonstrukt.de  Sat Oct  6 06:44:05 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Sat, 06 Oct 2007 12:44:05 +0200
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
Message-ID: <fe7otk$21a$1@newsreader2.netcologne.de>

Michele Simionato:
> At work we are shopping for a Web framework, so I have been looking at
> the available options
> on the current market.

At least, you missed Turbo Gears :)
http://turbogears.org/
For me, it feels more integrated than Pylons.

-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From redlex at bluebottle.com  Wed Oct 24 06:49:08 2007
From: redlex at bluebottle.com (Alex Hunsley)
Date: Wed, 24 Oct 2007 11:49:08 +0100
Subject: trying to remember how to do inline code "testing"
In-Reply-To: <5o8m51Flqaf5U1@mid.uni-berlin.de>
References: <471f2243$0$514$5a6aecb4@news.aaisp.net.uk>
	<5o8m51Flqaf5U1@mid.uni-berlin.de>
Message-ID: <471F2324.5020805@bluebottle.com>

Diez B. Roggisch wrote:
> Alex Hunsley wrote:
> 
>> I can remember Python having a feature which allowed you to add some
>> simple tests to your code, something like adding console output to your
>> actual python script, like so:
>>
>>
>>  >>> 1+1
>> 2
>>  >>> 2*7
>> 14
>>
>>
>> ... then python would actually run these queries and check that the
>> expected results occurred.
>> I can't find the docs for this feauture anywhere, but I'm certain I
>> didn't imagine this one!
>> Can anyone give me a reference?
> 
> http://docs.python.org/lib/module-doctest.html
 >
 > Diez

Brilliant, thanks for that Diez!
Alex


From ratishin at gmail.com  Fri Oct 26 00:22:15 2007
From: ratishin at gmail.com (RATISH KAKKAD)
Date: Thu, 25 Oct 2007 21:22:15 -0700
Subject: JOIN WWW.A2ZLEARING.ORG AND GET FREE STUFF
Message-ID: <1193372535.580474.189500@q5g2000prf.googlegroups.com>

Register with a2zlearning and get:

    * More than 1000 electronic book
    * Lecture notes for Arts, Commerce, Science, Management
    * Multiple Choice Questions for Competitive Exams
    * Case Studies for Management Aspirants
    * Slide Shows on various subjects
    * Kids Games, Software, Comic books etc.



From travis.jensen at gmail.com  Mon Oct  8 18:25:08 2007
From: travis.jensen at gmail.com (Travis Jensen)
Date: Mon, 8 Oct 2007 16:25:08 -0600
Subject: pytz has so many timezones!
In-Reply-To: <20071008202558.GB967@sdf.lonestar.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<20071008202558.GB967@sdf.lonestar.org>
Message-ID: <3605cb0710081525m1b763701n58386e33df177b3d@mail.gmail.com>

How about a calendar entry: I've got six people in places all over the world
to get on the phone together.  If the app doesn't know their notion of a
time zone, that will never happen.

How about financial transactions: time-stamping transactions that move
around the world seems pretty useful to me.  How do I know when said
transaction started if I can't convert the user's time into the server's
time?

Timezone is just another localization setting.  It is no different than
language or keyboard layout.  It is a piece of data that describes the
"world" the user lives in.  Unfortunately, DST makes them very complex
because DST is determined by the country and can change from year to year.
I think the US' DST change this year had more of a real-world impact than
Y2K (of course, people actually planned for Y2K, but that is a different
story :).

tj

On 10/8/07, J. Clifford Dyer <jcd at sdf.lonestar.org> wrote:
>
> On Mon, Oct 08, 2007 at 01:13:24PM -0700, mensanator at aol.com wrote
> regarding Re: pytz has so many timezones!:
> >
> > On Oct 8, 1:03 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> > > On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com wrote:
> > > > For example, Windows has seperate listings for
> > >
> > > > Central America
> > > > Central Time (US & Canada)
> > > > Guadalahara, Mexico City, Monterry - New
> > > > Guadalahara, Mexico City, Monterry - Old
> > > > Saskatchewan
> > >
> > > > but they are all GMT-6
> > >
> > > But they could have different rules for Daylight Saving Time.
> >
> > Which only matters if you're setting your clock.
> >
>
> Maybe this is where I'm not understanding you:  Do you have another use
> for setting a timezone?  The only thing a time zone does, as far as I can
> tell, is set clocks relative to a shared conception of time.
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Travis Jensen
travis.jensen at gmail.com
http://cmssphere.blogspot.com/
Software Maven * Philosopher-in-Training * Avenged Nerd
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071008/f03038ae/attachment.html>

From mensanator at aol.com  Sat Oct 27 11:04:58 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Sat, 27 Oct 2007 08:04:58 -0700
Subject: Going past the float size limits?
In-Reply-To: <13i6e9timmvuu51@corp.supernews.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
	<mailman.499.1193474381.13605.python-list@python.org>
	<13i6e9timmvuu51@corp.supernews.com>
Message-ID: <1193497498.164986.321540@v3g2000hsg.googlegroups.com>

On Oct 27, 8:12?am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Sat, 27 Oct 2007 10:24:41 +0200, Hendrik van Rooyen wrote:
> > So 0.002625**200000 is a number so small that its about as close as you
> > can practically get to bugger-all, as it is less than 10 ** -400000, and
> > more than 10**-600000
>
> If you read the rest of the thread, you'll see I give a much more
> accurate estimate. It's approaching 10**-520000.
>
> > Now I have heard rumours that there are approximately 10**80 elementary
> > particles in the universe, so this is much less than one of them, even
> > if my rumour is grossly wrong.
>
> > A light year is of the order of 9.46*10**18 millimetres, and no human
> > has ever been that far away from home.  Call it 10**19 for convenience.
> > So your number slices the last millimetre in a light year into more than
> > 10**399981 parts.
>
> Numbers like 10**520000 (the reciprocal of the product found) is a
> perfectly reasonable number if you're dealing with (say) permutations.
> Admittedly, even something of the complexity of Go only has about 10**150
> possible moves, but Go is simplicity itself compared to (say) Borges'
> Library of Babel or the set of all possible genomes.

And numbers of that size needn't be intractable.
The run time to generate a Collatz sequence is
logarithmic to the starting number. A number with
53328 digits only takes about 2.5 million iterations.
Of course, you can't test ALL the numbers of that
size, but often we're researching only certain types,
such as the ith kth Generation Type [1,2] Mersenne
Hailstone:

Closed form: Type12MH(k,i)
Find ith, kth Generation Type [1,2] Mersenne Hailstone
using the closed form equation

2**(6*((i-1)*9**(k-1)+(9**(k-1)-1)/2+1)-1)-1

            2**5-1  generation: 1
           2**29-1  generation: 2
          2**245-1  generation: 3
         2**2189-1  generation: 4
        2**19685-1  generation: 5
       2**177149-1  generation: 6
      2**1594325-1  generation: 7
     2**14348909-1  generation: 8
    2**129140165-1  generation: 9
   2**1162261469-1  generation:10

1.141 seconds

Generation 10 has over a billion bits or >300
million digits. I had to stop there because an
exponent of 32 bits gives an "outrageous exponent"
error.

The closed form formula only works for a very
specific type of number. The research goal was
to come with a generic algorithm that works with
any Type and see if the algorithm obtains the
same results:

Verify Type12MH Hailstones:
Find ith, kth Generation Type (xyz) Hailstone
using the non-recursive equation

(gmpy.divm(y**(k-1)-prev_gen[2],y-x,y**(k-1))/
y**(k-2))*xyz[1]**(k-1)+prev_gen[3]

where i=((hailstone-geni(k,1,xyz))/(xyz[1]**k))+1

            2**5-1  generation: 1
           2**29-1  generation: 2
          2**245-1  generation: 3
         2**2189-1  generation: 4
        2**19685-1  generation: 5
       2**177149-1  generation: 6
      2**1594325-1  generation: 7
     2**14348909-1  generation: 8
    2**129140165-1  generation: 9
   2**1162261469-1  generation:10

4.015 seconds

There are legitimate uses for such large numbers
and Python's ability to handle this was what got
me interested in using Python in the first place.

>
> It's not even what mathematicians call a "large number" -- it can be
> written using ordinary notation of powers. For large numbers that can't
> be written using ordinary notation, see here:
>
> http://en.wikipedia.org/wiki/Large_numberhttp://www.scottaaronson.com/writings/bignumbers.html
>
> For instance, Ackermann's Sequence starts off quite humbly:
>
> 2, 4, 27 ...
>
> but the fourth item is 4**4**4**4 (which has 10,154 digits) and the fifth
> can't even be written out in ordinary mathematical notation.
>
> Calculating numbers like 10**520000 or its reciprocal is also a very good
> exercise in programming. Anyone can write a program to multiply two
> floating point numbers together and get a moderately accurate answer:
>
> product = X*Y # yawn
>
> But multiplying 200,000 floating point numbers together and getting an
> accurate answer somewhere near 10**-520000 requires the programmer to
> actually think about what they're doing. You can't just say:
>
> A,T,C,G = (0.35, 0.30, 0.25, 0.10)
> product = map(operator.mul, [A*T*C*G]*200000)
>
> and expect to get anywhere.
>
> Despite my fear that this is a stupid attempt by the Original Poster's
> professor to quantify the old saw about evolution being impossible
> ("...blah blah blah hurricane in a junk yard blah blah Concorde blah blah
> blah..."), I really like this homework question.
>
> --
> Steven.




From george.sakkis at gmail.com  Thu Oct 25 02:46:08 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 25 Oct 2007 06:46:08 -0000
Subject: about functions question
In-Reply-To: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
Message-ID: <1193294768.397045.313780@e9g2000prf.googlegroups.com>

On Oct 25, 2:28 am, NoName <zaz... at gmail.com> wrote:

> I try it:
>
> def b():
>   ...
>   a()
>   ...
>
> def a():
>   ...
>   b()
>   ...
>
> b()
> it's not work.

It sure does. Please post full code and error message, something else
is wrong, not the cyclic reference.

George



From allen.fowler at yahoo.com  Mon Oct 15 20:06:28 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: Mon, 15 Oct 2007 17:06:28 -0700
Subject: Simple HTML template engine?
In-Reply-To: <mailman.14.1192437519.13605.python-list@python.org>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<mailman.14.1192437519.13605.python-list@python.org>
Message-ID: <1192493188.741846.30260@v29g2000prd.googlegroups.com>

CherryPy looks nice... though I am just looking to generate static
reports.

Thanks anyway... I'll keep it in mind for the future.

On Oct 15, 4:38 am, "Ciprian Dorin Craciun"
<ciprian.crac... at gmail.com> wrote:
>     Have you tried CherryPy?http://www.cherrypy.org/
>
>     It's not a template engine, but a simple web server engine, and
> you could code your conditionals and loops directly in Python... When
> I have tried it, it looked very nice and easy.
>
>     Ciprian.



From eduardo.padoan at gmail.com  Tue Oct 30 07:11:18 2007
From: eduardo.padoan at gmail.com (Eduardo O. Padoan)
Date: Tue, 30 Oct 2007 09:11:18 -0200
Subject: A Python 3000 Question
In-Reply-To: <fg5fku$5c1$1@solaris.cc.vt.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
Message-ID: <dea92f560710300411v2b571663u8ac921fc996dd1a2@mail.gmail.com>

On 10/29/07, brad <byte8bits at gmail.com> wrote:
> Will len(a_string) become a_string.len()? I was just reading
>
> http://docs.python.org/dev/3.0/whatsnew/3.0.html
>
> One of the criticisms of Python compared to other OO languages is that
> it isn't OO enough or as OO as others or that it is inconsistent. And
> little things such as this seem to support those arguments. Not that it
> matters really... just seems that classes with methods used in a more
> consistent manner would be more appropriate in an OO langauage. Is there
> a reason that len cannot be a method?
>
> a_string.lower() makes sense, as does a_string.split(),
> a_string.strip()... why not a_string.len()?

This is a FAQ:
http://effbot.org/pyfaq/why-does-python-use-methods-for-some-functionality-e-g-list-index-but-functions-for-other-e-g-len-list.htm


-- 
http://www.advogato.org/person/eopadoan/
Bookmarks: http://del.icio.us/edcrypt


From hyugaricdeau at gmail.com  Mon Oct  8 10:45:13 2007
From: hyugaricdeau at gmail.com (Hyuga)
Date: Mon, 08 Oct 2007 14:45:13 -0000
Subject: Howto Launch a windows application ?
In-Reply-To: <mailman.1484.1191447580.2658.python-list@python.org>
References: <mailman.1484.1191447580.2658.python-list@python.org>
Message-ID: <1191854713.123997.50090@o80g2000hse.googlegroups.com>

On Oct 3, 5:39 pm, stef mientki <stef.mien... at gmail.com> wrote:
>
> from subprocess import *
>
> cmd =[]
> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
> cmd.append ( '-long-start' )
> cmd.append ( '-d')
> cmd.append ( '-clear' )
> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
> cmd.append ( 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )

This is sort of aside from your original question, but I should also
point out how unnecessary all those 'cmd.append's are.  You can
initialize the list all at once simply like so:

cmd =['D:\\PIC-tools\\JALxxx\\jalv2_3.exe',
      '-long-start',
      '-d',
      '-clear',
      '-sD:\\PIC-tools\\JAL\\libs2',
      'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal',
      '>d:\\data_actueel\\d7_test_browser\\temp.log']

Hyuga



From google at mrabarnett.plus.com  Thu Oct 18 19:44:38 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Thu, 18 Oct 2007 16:44:38 -0700
Subject: Noob questions about Python
In-Reply-To: <1192687508.636842.49940@z24g2000prh.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192687508.636842.49940@z24g2000prh.googlegroups.com>
Message-ID: <1192751078.506979.170580@z24g2000prh.googlegroups.com>

On Oct 18, 7:05 am, Michele Simionato <michele.simion... at gmail.com>
wrote:
> On Oct 17, 5:58 pm, Ixiaus <parnel... at comcast.net> wrote:
>
> > def bin2dec(val):
> >     li = list(val)
> >     li.reverse()
> >     res = [int(li[x])*2**x for x in range(len(li))]
> >     print sum(res)
>
> > It basically does the same thing int(string, 2) does.
>
> > Thank you for the responses!
>
> BTW, here is the reverse function dec2bin, so that you can
> bang your head on it for a while ;)
>
It returns '' when number == 0, so you need to test for that case:

> def baseN(number, N=2):
>     """
>     >>> baseN(9, 2)
>     '1001'
>     """
>     assert 2 <= N <= 10
>     assert isinstance(number, int) and number >= 0
    if number == 0:
        return "0"
>     b = []
>     while number:
>         b.append(str(number % N))
>         number /= N
>     return ''.join(reversed(b))
>
>        Michele Simionato




From lasses_weil at klapptsowieso.net  Mon Oct 29 06:09:40 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Mon, 29 Oct 2007 11:09:40 +0100
Subject: ANN: Veusz 1.0 - a scientific plotting package
In-Reply-To: <fg49eq$nnh$1@gemini.csx.cam.ac.uk>
References: <fg49eq$nnh$1@gemini.csx.cam.ac.uk>
Message-ID: <4725b164$0$4359$9b4e6d93@newsspool4.arcor-online.net>

Jeremy Sanders wrote:
> I'm pleased to announce Veusz 1.0. Source, windows and linux i386 binaries
> are available. Jeremy Sanders
> 
> [snip]
> 
> Veusz is a scientific plotting package written in Python, using PyQt4
> for display and user-interfaces, and numpy for handling the numeric
> data. Veusz is designed to produce publication-ready Postscript/PDF
> output. The user interface aims to be simple, consistent and powerful.
> 
Not that I don't value your effort, but why another plotting package 
while we have pyx and matplotlib already?

/W


From panguohualove at sina.com  Mon Oct  1 21:41:34 2007
From: panguohualove at sina.com (panguohua)
Date: Mon, 01 Oct 2007 18:41:34 -0700
Subject: I earn $36800 a month with google adsense
In-Reply-To: <1191240372.428917.253350@o80g2000hse.googlegroups.com>
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
	<1191240372.428917.253350@o80g2000hse.googlegroups.com>
Message-ID: <1191289294.449262.234020@r29g2000hsg.googlegroups.com>

On 10 1 ,   8 06 , panguohua <panguohual... at sina.com> wrote:
> On 10 1 ,   1 13 , panguohua <panguohual... at sina.com> wrote:
>
> >www.space666.com
>
> > a good website for making money with your blog.more information there
>
> support!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!

good



From joshua at eeinternet.com  Thu Oct 18 21:42:16 2007
From: joshua at eeinternet.com (Joshua J. Kugler)
Date: Thu, 18 Oct 2007 17:42:16 -0800
Subject: ConfigParser preserving file ordering
References: <200710190123.39177.Frank.Aune@broadpark.no>
Message-ID: <ff921p$116$1@ger.gmane.org>

On Thursday 18 October 2007 15:23, Frank Aune wrote:

> Hello,
> 
> I use ConfigParser and actually quite like it, EXCEPT that it doesnt
> preserve the section order of the original config file when writing a new.
> This behaviour is hopeless IMO, and I've been looking for alternatives.
> 
> I've been reading the interesting discussion on python-dev about
> improvements to ConfigParser:
> 
> http://mail.python.org/pipermail/python-dev/2006-January/060138.html
> 
> I know there are patches to archieve what I want, but tbh I need
> functionality present in the standard library or as a last option
> sub-class ConfigParser to archieve ordering preservation.
> 
> Since the thread above is nearly two years old, I'm wondering if something
> has happended in this department?

Have you taken a look at ConfigObj?

http://www.voidspace.org.uk/python/configobj.html

j

-- 
Joshua Kugler
Lead System Admin -- Senior Programmer
http://www.eeinternet.com
PGP Key: http://pgp.mit.edu/ ?ID 0xDB26D7CE



From kadeko at gmail.com  Wed Oct 31 08:01:59 2007
From: kadeko at gmail.com (looping)
Date: Wed, 31 Oct 2007 05:01:59 -0700
Subject: Creating a temporary file in Python
Message-ID: <1193832119.872710.108920@k79g2000hse.googlegroups.com>

Hi,

I want to create a temporary file, read it in an external command and
finally delete it (in Windows XP).

I try to use tempfile module but it doesn't work, the file couldn't be
open by my other process (error like: SP2-0310: unable to open file "c:
\docume~1\looping\locals~1\temp\tmpau81-s.sql")
Is there a way to make it work or I have to manually manage
everything ?

My non working code:

f = tempfile.NamedTemporaryFile(suffix='.sql')
f.write(txt)
f.flush()
p = subprocess.Popen([SQL_PLUS, '-s', dsn, '@', SQL_PLUS_SCRIPT,
f.name],
      stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
p.wait()
f.close()

Thanks for your help.



From sjmachin at lexicon.net  Wed Oct 10 07:05:28 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 21:05:28 +1000
Subject: Last value of yield statement
In-Reply-To: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
References: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
Message-ID: <470cb1fd@news.eftel.com.au>

On 10/10/2007 8:19 PM, Shriphani wrote:
> Hello all,
> 
> Let us say I have a function like this:
> 
> def efficientFiller(file):
>         worthless_list = []
>         pot_file = open(file,'r')
>         pot_file_text = pot_file.readlines()
>         for line in pot_file_text:
>                 if line.find("msgid") != -1:
>                         message_id = shlex.split(line)[1]
>                         if message_id in dictionary:
>                                 number = pot_file_text.index(line)
>                                 corresponding_crap =
> dictionary.get(message_id)
>                                 final_string = 'msgstr' + " " + '"' +
> corresponding_crap + '"' + '\n'
>                                 pot_file_text[number+1] = final_string
>                                 yield pot_file_text
> 
> efficient_filler =  efficientFiller("libexo-0.3.pot")
> new_list = list(efficient_filler)
> print new_list
> 
> 
> 
> I want to plainly get the last value the yield statement generates.
> How can I go about doing this please?
> 

I don't think that 'efficient' and 'plainly' mean what you think they 
mean. However to answer your question:

     new_list[-1] if new_list else None

BTW I get the impression that the yield statement yields the whole 
pot_file_text list each time, so that new_list will be a list of lists; 
is that intentional?


From george.sakkis at gmail.com  Thu Oct 11 21:01:41 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Fri, 12 Oct 2007 01:01:41 -0000
Subject: Declarative properties
In-Reply-To: <1192143867.686910.210320@t8g2000prg.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<1192143867.686910.210320@t8g2000prg.googlegroups.com>
Message-ID: <1192150901.408517.262360@i13g2000prf.googlegroups.com>

On Oct 11, 7:04 pm, George Sakkis <george.sak... at gmail.com> wrote:

> You could take it even further by removing the need to repeat the
> attribute's name twice. Currently this can done only through
> metaclasses but in the future a class decorator would be even
> better:

Replying to myself here, but actually metaclasses is not the only way;
another solution involves a descriptor class:


class Property(object):

    # cache the mapping of types to 'private' attribute names
    _type2attrname = {}

    def __init__(self, format='_%s'):
        self._format = format

    def __get__(self, obj, type=None):
        try: name = self._type2attrname[type(obj)]
        except KeyError:
            self._type2attrname[type(obj)] = name =
self._get_propname(obj)
        return getattr(obj, name)

    def __set__(self, obj, value):
        try: name = self._type2attrname[type(obj)]
        except KeyError:
            self._type2attrname[type(obj)] = name =
self._get_propname(obj)
        setattr(obj, name, value)

    def _get_propname(self, obj):
        for cls in type(obj).mro():
            for name,value in cls.__dict__.iteritems():
                if value is self:
                    return self._format % name
        assert False  # unreachable


#---- example ------------------------------------

class Person(object):
    name = Property()

    def __init__(self, name):
        self.name = name

p = Person('John')
q = Person('Mike')
print p.name, q.name
print p.__dict__


George



From josephoswald at gmail.com  Tue Oct  9 09:50:03 2007
From: josephoswald at gmail.com (josephoswald+gg@gmail.com)
Date: Tue, 09 Oct 2007 06:50:03 -0700
Subject: The fundamental concept of continuations
In-Reply-To: <470b1b30$0$11022$4c368faf@roadrunner.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
Message-ID: <1191937803.785801.294310@v3g2000hsg.googlegroups.com>

On Oct 9, 2:09 am, "." <f... at bar.biz> wrote:
> On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:

> > (3) Is it present in python and java ?
>
> Certainly not Java, I dunno about Python.  I've never seen someone use
> them in Python, but the pythonistas seem to want to add everything but a
> decent lambda to their language so I wouldn't be surprised if someone had
> added a call/cc.  Ruby has it.
>

Continuations exist in all computer languages---actually, in anything
that executes code. The continuation is simply "what will happen for
the rest of the program execution." What might or might not exist is
an explicit linguistic mechanism to examine it, refer to the
continuation as a function, or to save it for later use.

> > (4) Its implementation in assembly. for example in the manner that
> > pointer fundamentally arises from indirect addressing and nothing new.
> > So how do you juggle PC to do it.
>

The continuation is typically present in the stack, which contains all
the control-flow information needed to continue program execution from
this point. (I.e., the function call mechanism includes a step saving
the location of the instruction to execute when the function call is
complete, and any registers that it will restore after the function
returns because the function call might destroy them.)

How you save that continuation for later, possibly repeated, use from
a different location in the program is a different question.



From fw3 at hotmail.co.jp  Thu Oct 25 14:38:28 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Thu, 25 Oct 2007 18:38:28 +0000
Subject: parsing the output from matlab
In-Reply-To: <fb0734860710230708m14d8e408re7476072e1de475a@mail.gmail.com>
References: <Sq4Ti.2548$QP4.156@fe03.usenetserver.com>
	<BLU107-W4B71C65B6428BCFFD16FAB49A0@phx.gbl> 
	<fb0734860710230708m14d8e408re7476072e1de475a@mail.gmail.com>
Message-ID: <BLU107-W162E20A7EFD0B48AAF49E7B4950@phx.gbl>


Hi, Travis,
 
Thanks very much for your help. Since each day, my mail box is flooded with python forum email. I simply overlooked your email, eventhough I am desperately waiting for the help. Today when I googled the topic and found your reply.
 
I am sorry that I send a similar help request to the forum today.
 
Frank


Date: Tue, 23 Oct 2007 10:08:28 -0400From: travis.brady at gmail.comTo: python-list at python.orgSubject: Re: parsing the output from matlab
On 10/22/07, wang frank <fw3 at hotmail.co.jp> wrote 

 I have a big log file generated from matlabe, for each variable, it print the name of the variable and an empty line and then the value. such as: x1 =     0.1 y =    7 z =     6.7 x1 =    0.5 I want to use python to parse the file and selectively print out the vairable and its value. For example, I want to print out all the value related with x1, so the output will be x1 = 0.1x1 = 0.5. 
Here is a fairly naive version with re named groups that should handle the example you pasted. 



In [62]: import re

In [63]: px = re.compile('(?P<variable>\w+)\s=\s+(?P<value>\d.*\d*)')

In [64]: for var in px.finditer(s):
    print "%s = %s" %(var.group('variable'), var.group('value'))
   ....:     
   ....:     
a = 0.1
y = 7
z = 6.7
x1 = 0.5

To filter for only the x1's just test for the group named 'variable':


In [66]: for var in px.finditer(s):
   ....:     if var.group('variable')=='x1':
   ....:         print "%s = %s" %(var.group('variable'), var.group('value')) 
   ....:         
   ....:         
x1 = 0.5

But I'm betting these files get more complex than just the snippet you included, in which case it's probably worth looking at pyparsing  http://pyparsing.wikispaces.com/ and regular expressions.


 
-- Travis Bradyhttp://travisbrady.com/ 
_________________________________________________________________
???????????????????Hotmail Plus ??????????
http://get.live.com/mail/options
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/575689e3/attachment.html>

From jfcanac at free.fr  Fri Oct  5 04:48:39 2007
From: jfcanac at free.fr (Jean-Francois Canac)
Date: Fri, 5 Oct 2007 10:48:39 +0200
Subject: Real time plot
References: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM>	<mailman.1493.1191484119.2658.python-list@python.org>	<47051599$0$27367$ba4acef3@news.orange.fr>
	<mailman.1558.1191563846.2658.python-list@python.org>
	<4705e3f5$0$31086$afc38c87@news.optusnet.com.au>
Message-ID: <4705f9fd$0$5077$ba4acef3@news.orange.fr>


"Lawson Hanson" <lawsonhanson at optusnet.com.au> a ?crit dans le message de 
news: 4705e3f5$0$31086$afc38c87 at news.optusnet.com.au...
> Nicholas Bastin wrote:
>> On 10/4/07, Jean-Francois Canac <jfcanac at free.fr> wrote:
>>> mailman.1493.1191484119.2658.python-list at python.org...
>>>> I would draw dots on a suitably sized Tkinter canvas, after drawing a
>>>> schematic
>>>> of the race track (laborious).
>>>>
>>>> 20 per second will be no problem, provided the machine is half decent.
>>>>
>>>> What is the speed at which the com port runs?
>>>>
>>>> - Hendrik
>>>>
>>> The com port run at 19.2 kb/s.
>>> My pb is more the real time aspect: to see the plot changing in real 
>>> time
>>> than the com aspect as the installation is already running with programs 
>>> in
>>> c++.
>>> The PC on which it is running is good enought
>>> For me the interest is to migrate all taht on python to be able to make 
>>> fast
>>> changes when it is of interest
>>
>> The success of this will have more to do with design than programming
>> language.  Any GUI toolkit which allows partial screen updates can be
>> made to update at least as fast as your screen refresh rate, even in
>> python.
>>
>> --
>> Nick
>
> If you are using Tkinter (probably a very good choice), just remember
>     to make periodic (i.e., once per I/O processing loop) calls to:
>
>     Tkinter.update_idletasks()
>
> which will update the display window, etc.
>
> Regards,
>
> Lawson
>
Finally I tried this coding and it works
#==========================
import time
import pylab

pylab.ion()

lat,long,vit = pylab.load(r"c:\pytst\test1.txt",usecols=(1,2,3), 
unpack=True)
lat_min=pylab.amin(lat)
lat_max=pylab.amax(lat)
long_min=pylab.amin(long)
long_max=pylab.amax(long)

print "start"


timefig = pylab.figure(1)
timesub = pylab.subplot(111)
x=[]
y=[]


lines = pylab.plot(x,y)
print lat_min,lat_max,long_min,long_max

for i in range(len(lat)):
 x.append(long[i])
 y.append(lat[i])
 lines[0].set_data(x,y)
 timesub.set_xlim(long_min,long_max)
 timesub.set_ylim(lat_min,lat_max)
 pylab.draw()

#================
The kind of data I have in the text file are just below
Now I have two problems, I think my coding is not very clean as when I try 
yo close or manipulate the windows it generates an error
secondly I think it is a bit slow. I would much prefer something quicker and 
to be able to adapt the speed dynamically with a sleep instruction or 
something as that

09:25:08.50 46.863930 3.161866 56.9 Km/h
09:45:07.75 46.863907 3.161786 11.5 Km/h
09:45:08.0 46.863914 3.161794 12.4 Km/h
09:45:08.25 46.863918 3.161804 13.4 Km/h
09:45:08.50 46.863922 3.161814 14.5 Km/h
09:45:08.75 46.863930 3.161825 15.4 Km/h
09:45:09.0 46.863934 3.161837 16.1 Km/h
09:45:09.25 46.863941 3.161848 16.6 Km/h
09:45:09.50 46.863945 3.161861 17.1 Km/h
09:45:09.75 46.863953 3.161874 17.3 Km/h




From KDawg44 at gmail.com  Thu Oct 11 11:53:45 2007
From: KDawg44 at gmail.com (KDawg44)
Date: Thu, 11 Oct 2007 15:53:45 -0000
Subject: Script to Remove Attachments in Exchange Mailbox
In-Reply-To: <mailman.85.1192114940.927.python-list@python.org>
References: <1192110265.529187.48770@y42g2000hsy.googlegroups.com>
	<mailman.85.1192114940.927.python-list@python.org>
Message-ID: <1192118025.085938.283610@19g2000hsx.googlegroups.com>

On Oct 11, 10:03 am, Tim Golden <m... at timgolden.me.uk> wrote:
> KDawg44 wrote:
> > Hi,
>
> > I am frustrated with my users who send large files around the office
> > instead of using the network shares.
>
> [...]
>
> > Which means that there are 8 copies of the same file 4MB taking up
> > space, or a 4MB file turned into a 32MB file."
>
> > So, what I would like, is to write a script that parses the exchange
> > mailbox, and removes all attachments over a certain size (say 500K)
> > that are attached to messages that are more than 2 weeks old, or that
> > are in sent items.  I would like to write to a log file all the
> > changes that are made then email that log file to the mailbox that was
> > just trimmed.
>
> I have something v. similar, only it's at work and I'm not. Maybe tomorrow.
> What it does -- I think, it's been a while -- is to rip through any
> mailboxes finding attachments over a certain size, saving them to some
> kind of folder structure on the user's home drive and replacing the
> attachment by a link to the attachment. I have another script which,
> independently, rips through users' home shares finding duplicates and
> linking them to one copy.
>
> It's a while since they were last run to they're probably quite
> dusty but it sounds like the kind of thing you're after.
>
> TJG

That sounds great!

Thanks!



From mensanator at aol.com  Mon Oct  1 21:03:18 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 01 Oct 2007 18:03:18 -0700
Subject: Using fractions instead of floats
In-Reply-To: <1191284422.899591.308960@g4g2000hsf.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
Message-ID: <1191286998.727959.8010@50g2000hsm.googlegroups.com>

On Oct 1, 7:20 pm, richy... at gmail.com wrote:
> On Oct 1, 8:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
>
> >   >>> mpq(1,3)+0.6
> >   mpq(14,15)
>
> Golly!  That's quite impressive.  And more than a little bit magic as
> well, since 0.6 is definitely not the same as 3/5.  

It's not? Since when?

>>> print gmpy.mpq('0.6')
3/5

> How on earth does this work?

The rationals are always reduced to lowest terms.

>
> Richard




From saptarshi.guha at gmail.com  Wed Oct  3 09:43:21 2007
From: saptarshi.guha at gmail.com (sapsi)
Date: Wed, 03 Oct 2007 06:43:21 -0700
Subject: LoopingCall vs internet.TimerService (Twisted)
Message-ID: <1191419001.173510.49660@22g2000hsm.googlegroups.com>

Hi,
I guess this is not the most appropriate forum but i tried the twisted
forum  to not avail so here goes.

I have written a server which accepts connections from clients, takes
requests and adds them to a Queue (a python object of Queue.Queue).
Now i have two approaches

a) At startup, my server(a subclass of pb.Root)  runs a "dispatcher"
function using task.LoopingCall(dispatcher).start(0.1)
b)Create a separate subclass of internet.TimerService whose function
is dispatcher

[INFO: dispatcher has methods like obj.callRemote, addCallback and
addErrback]

I checked the source and it seems Loopingcall is implemented through
callLaters//Callbacks and TimerService has LoopingCall in it.

So which is better, neater, safer? loopingcall of timerservice? also
is it safe to do the calls mentioned in INFO within dispatcher?

Thank you for your time
Saptarshi



From steve at holdenweb.com  Wed Oct 17 07:11:48 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 17 Oct 2007 07:11:48 -0400
Subject: negative base raised to fractional exponent
In-Reply-To: <1192573562.622390.218860@i38g2000prf.googlegroups.com>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>	<mailman.95.1192572226.13605.python-list@python.org>
	<1192573562.622390.218860@i38g2000prf.googlegroups.com>
Message-ID: <ff4qlm$d7n$1@ger.gmane.org>

John Machin wrote:
> On Oct 17, 8:03 am, Steve Holden <st... at holdenweb.com> wrote:
>> schaefer... at gmail.com wrote:
>>> Does anyone know of an approximation to raising a negative base to a
>>> fractional exponent? For example, (-3)^-4.11111 since this cannot be
>>> computed without using imaginary numbers. Any help is appreciated.
>> A couple of questions.
>>
>> 1. How do you approximate a complex number in the reals? That doesn't
>> make sense.
>>
>> 2. x ^ -4.1111 = 1 / (x ^ 4.1111), so where do complex numbers enter
>> into this anyway?
>>
>> 3. I think you will find the complex numbers start to emerge as you
>> explore fractional exponents.
> 
> This is part of the story -- the other part is that the story differs
> depending on whether x is positive or negative.
> 
>> This being Python, and an interactive interpreter being available, you
>> can always just try it:
>>
>>  >>> -3 ** -4.1111
>> -0.010927147607830808
> 
> Steve, Trying to memorise the operator precedence table for each of
> several languages was never a good idea. I admit advanced age :-) and
> give up and use parentheses, just like the OP did:
> 
>>>> (-3)**-4.11111
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ValueError: negative number cannot be raised to a fractional power
> 
> Best regards,
> John
> 
Well I guess I'd better admit to advances age too. Particularly since 
there was a python-dev thread about precedence, unaries and 
exponentiation not too long ago.

regards
  Steve

-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From parnell.s at comcast.net  Wed Oct 17 15:37:43 2007
From: parnell.s at comcast.net (Ixiaus)
Date: Wed, 17 Oct 2007 12:37:43 -0700
Subject: Noob questions about Python
Message-ID: <1192649863.496557.230730@v29g2000prd.googlegroups.com>

I have recently (today) just started learning/playing with Python. So
far I am excited and impressed (coming from PHP background).

I have a few questions regarding Python behavior...

val = 'string'
li = list(val)
print li.reverse()

returns nothing, but,

val = 'string'
li = list(val)
li.reverse()
print li

returns what I want. Why does Python do that?

Also I have been playing around with Binary math and noticed that
Python treats:

val = 00110

as the integer 72 instead of returning 00110, why does Python do that?
(and how can I get around it?)

Grateful for any replies!



From kyrie at uh.cu  Thu Oct 11 00:05:10 2007
From: kyrie at uh.cu (Luis Zarrabeitia)
Date: Thu, 11 Oct 2007 04:05:10 +0000
Subject: Duck Typing and **kwds
Message-ID: <1192075510.470da0f6a7958@comuh.uh.cu>


Hi there.

I just tried this test:

====
def f(**kwds):
    print kwds

import UserDict
d = UserDict.UserDict(hello="world")
f(**d)
====

And it fails with a TypeError exception ("f() argument after ** must be a
dictionary"). I find that weird, as UserDict should support all protocols that
dict supports, yet it doesn't seem to support ** unpacking. If instead of
UserDict I use a derivate class from dict (class mydict(dict):pass), the **
operator works as expected. It also works if I execute f(**dict(d)) instead.

Is that behavior expected? Is there any reason (performance, perhaps?) to break
duck-typing in this situation?

Regards,

-- 
Luis Zarrabeitia
Facultad de Matem?tica y Computaci?n, UH
http://profesores.matcom.uh.cu/~kyrie




--
"Al mundo nuevo corresponde la Universidad nueva"
UNIVERSIDAD DE LA HABANA
280 aniversario 


From steve at holdenweb.com  Thu Oct  4 07:54:50 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 07:54:50 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fe2jdd$84p$1@lust.ihug.co.nz>
References: <13frd6vtarbee75@corp.supernews.com>	<fdtsfu$iq6$03$1@news.t-online.com>	<fdvn34$odf$1@orkan.itea.ntnu.no>	<85ve9ov971.fsf@lola.goethe.zz>	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>	<47041303$0$13930$fa0fcedb@news.zen.co.uk>	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>	<fe26tn$vs0$5@lust.ihug.co.nz>	<mailman.1501.1191493515.2658.python-list@python.org>
	<fe2jdd$84p$1@lust.ihug.co.nz>
Message-ID: <fe2ka5$sfs$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.1501.1191493515.2658.python-list at python.org>, Steve
> Holden wrote:
> 
>> Lawrence D'Oliveiro wrote:
>>
>>> In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>, George Neuner
>>> wrote:
>>>
>>>> The Christian Bible says "In the beginning was the Word..."
>>> Which is an English mistranslation from the Greek "logos".
>> So, now you're telling me that the Garden of Eden was actually a
>> *marketing campaign*?
> 
> Different Bible book, different author, different original language.

So Genesis was written in Hebrew? I have no clue as to where the 
manuscripts were found.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From alexandre.badez at gmail.com  Fri Oct 12 04:36:33 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Fri, 12 Oct 2007 01:36:33 -0700
Subject: Cross-platform GUI development
In-Reply-To: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
Message-ID: <1192178193.734126.253610@z24g2000prh.googlegroups.com>

On Oct 12, 10:13 am, "psaff... at googlemail.com"
<psaff... at googlemail.com> wrote:
> I've been programming in Python for 5 or more years now and whenever I
> want a quick-n-dirty GUI, I use Tkinter. This is partly because it's
> the first toolkit I learnt, but also because it's part of the standard
> Python distribution and therefore easy to get Python apps to work
> cross platform - it usually requires almost no porting effort.
>
> However, when I need a little bit more grunt, I tend to turn to Tix,
> which I thought was also fairly standard. However, this week, I wrote
> a Tix application under Linux which I'd really like to work on Mac OS
> and it's proving fairly painful to get it going. There is no Tix in
> the standard fink or apt repositories and when I download a tar-ball,
> it wouldn't build because it had a lot of unmet dependencies. I then
> read a post which said that only Tkinter/Python people really use Tix
> anymore and people in tcl/tk moved onto better toolkits long ago.
>
> My question is if Tix is old hat, what is the GUI toolkit I *should*
> be using for quick-n-dirty cross platform GUI development? I guess
> this is tangentially related to:
>
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/...
>
> I hope this isn't a stupid question. I'm wearing flame retardant
> underwear.
>
> Peter

Personnaly, I use PyQt simply because I prefere Qt to Gtk, witch is
much more integrated with all desktop than Gtk.
In fact, your application in Qt on Mac, Win or Linux look like a
native app.

Just a question of "feeling" I think; because most of those GUI
framework, offer quiet the same functionality.



From anandology at gmail.com  Tue Oct 30 23:19:50 2007
From: anandology at gmail.com (Anand)
Date: Wed, 31 Oct 2007 03:19:50 -0000
Subject: python in academics?
In-Reply-To: <1193750524.107361.130600@50g2000hsm.googlegroups.com>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
	<1193750524.107361.130600@50g2000hsm.googlegroups.com>
Message-ID: <1193800790.817105.92720@e34g2000pro.googlegroups.com>

On Oct 30, 6:22 pm, BartlebyScrivener <bscrivene... at gmail.com> wrote:
> On Oct 29, 10:39 pm, sandipm <sandip.m... at gmail.com> wrote:
>
> > seeing posts from students on group. I am curious to know, Do they
> > teach python in academic courses in universities?
>
> This came up a while back. See:
>
> http://tinyurl.com/2pjjua
>
> If that doesn't work, search the Google group for "Python taught in
> schools"
>
> rd

Here is another interesting article "Algorithm Education in Python":

http://www.ece.uci.edu/~chou/py02/python.html




From lucian.cancescu at gmail.com  Wed Oct 31 17:10:26 2007
From: lucian.cancescu at gmail.com (elf)
Date: Wed, 31 Oct 2007 21:10:26 -0000
Subject: 3 number and dot..
In-Reply-To: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <1193865026.987756.210320@o3g2000hsb.googlegroups.com>

On Oct 31, 9:58 pm, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
>
> How can i do?

Hi,
If you want to define your own function, no matter what the length of
the number is or what separator you want to choose, this will work:

def conv(s, sep='.'):
    start=len(s)%3
    last=start
    result=s[0:start]
    for i in range(start+1,len(s)):
        if (i-start)%3==0:
            if last==0:
                result+=s[last:i]
            else:
                result+=sep+(s[last:i])
            last=i

    if last==len(s) or last==0:
        result+=s[last:len(s)]
    else:
        result+=sep+s[last:len(s)]
    return result

print conv('1234567890000000')
print conv('1')
print conv('123')
print conv('1234')
>>>
1.234.567.890.000.000
1
123
1.234



From paul.nospam at rudin.co.uk  Sun Oct 21 02:50:34 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Sun, 21 Oct 2007 07:50:34 +0100
Subject: logging module - restricted mode error
References: <87przflpir.fsf@rudin.co.uk>
	<1192907914.138999.114910@k35g2000prh.googlegroups.com>
Message-ID: <87ejfphsg5.fsf@rudin.co.uk>

Vinay Sajip <vinay_sajip at yahoo.co.uk> writes:

> On 16 Oct, 04:14, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
>> I'm occasionally seeing tracebacks like this:
>>
>> Traceback (most recent call last):
>>   File "logging/__init__.py", line 744, in emit
>>   File "logging/__init__.py", line 630, in format
>>   File "logging/__init__.py", line 421, in format
>> RuntimeError: instance.__dict__ not accessible in restricted mode
>>
>> I'm not sure what it means. Googling leads me to
>> <http://docs.python.org/lib/restricted.html> but that says that those
>> modules were disabled in 2.3 and I'm running 2.5.1. In any case I'm
>> not using them (although it could be that one of the 3rd party modules
>> I'm using does something.)
>>
>> Could someone please explain what this error means?
>
> Can you say a little bit more about the execution environment? For
> example, are you running under mod_python? If so, which version?

I'm not running under mod_python - but this is using cherrypy. I also
do some passing of pickled objects between two python processes, which
I guess could be relevant.

>
> When googling, did you search for the exact text of the error message?
> For example, did you see the following post?
>
> http://mail-archives.apache.org/mod_mbox/httpd-python-dev/200404.mbox/%3C408661A5.3010001 at sjsoft.com%3E
>

I hadn't noticed that particularly, but I'm still a little unclear as
to what's going on. That thread dates from 3 years ago and it seems to
imply that mod python is using restricted mode (in the sense of the
the rexec module), which won't run in 2.5 will it?

One parts that says:

  "Restricted mode is a strange beast, in that there isn't really
   anything like a "restricted mode" flag, but it looks at a pointer
   somwhere (don't remember now), and if it's not what is expected, it
   concludes that it's in restricted mode. So this behaviour is
   actually a sign of a bug where an object is created in one
   subinterpreter but is running in another... These bugs can be hard
   to track down."

What exactly is meant by a subinterpreter? Python running in a
subprocess?


From ben at benfinney.id.au  Sun Oct 28 18:56:48 2007
From: ben at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 09:56:48 +1100
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
Message-ID: <87bqaihmq7.fsf@benfinney.id.au>

Howdy all,

Ned Batchelder has been maintaining the nice simple tool 'coverage.py'
<URL:http://nedbatchelder.com/code/modules/coverage.html> for
measuring unit test coverage.

On the same site, Ned includes documentation
<URL:http://nedbatchelder.com/code/modules/rees-coverage.html> by the
previous author, Gareth Rees, who says in the "Limitations" section:

    Statement coverage is the weakest measure of code coverage. It
    can't tell you when an if statement is missing an else clause
    ("branch coverage"); when a condition is only tested in one
    direction ("condition coverage"); when a loop is always taken and
    never skipped ("loop coverage"); and so on. See [Kaner 2000-10-17]
    <URL:http://www.kaner.com/pnsqc.html> for a summary of test
    coverage measures.

So, measuring "coverage of executed statements" reports complete
coverage incorrectly for an inline branch like 'foo if bar else baz',
or a 'while' statement, or a 'lambda' statement. The coverage is
reported complete if these statements are executed at all, but no
check is done for the 'else' clause, or the "no iterations" case, or
the actual code inside the lambda expression.

What approach could we take to improve 'coverage.py' such that it
*can* instrument and report on all branches within the written code
module, including those hidden inside multi-part statements?

-- 
 \            "Technology is neither good nor bad; nor is it neutral." |
  `\                       ?Melvin Kranzberg's First Law of Technology |
_o__)                                                                  |
Ben Finney


From chowroc.z+l at gmail.com  Mon Oct 22 01:08:22 2007
From: chowroc.z+l at gmail.com (Roc Zhou)
Date: Mon, 22 Oct 2007 13:08:22 +0800
Subject: A near realtime fs mirror application (for backup, written in Python,
	by Linux inotify)
Message-ID: <7847e5160710212208w50293c85rdbc088b2543c2c31@mail.gmail.com>

Hello:

Recently I started an open source project "cutils" on the sourceforge:
   http://sourceforge.net/projects/crablfs/

The document can be found at:
http://crablfs.sourceforge.net/#ru_data_man

This project's mirrord/fs_mirror tool is a near realtime file system
mirroring application across 2 or more hosts, something like MySQL's
replication, but it's for the file system especially with a great amount
of small files, such as the php scripts and images of a website or the
(vitual) websites.

There are several ways to use this tool. The simplest is to mirror a
host's file system to another host for backup, and use the rotate
function(in the future version) or rotate scripts to get a daily or
hourly snapshot with the hard link.

Or futhur more, you can use it this way:
  This graph should be displayed with monospaced fonts:

      +----------+
      |  worker  | -[mirrord] -----------\
      +----------+                       |
         ......                          |
                                         |
      +----------+                       |
      |  worker  | -[mirrord] -----------\
      +----------+                       |
                                         V
                                    [fs_mirror]
                                         |
      +----------+                  +----------+
      |  worker  | -[mirrord] --->  |  backup  |
      +----------+                  +----------+
           |                             |
      [take_over]                        |
           |                             |
           V                             |
      +----------+                       |
      |  rescue  | <------------------- NFS
      +----------+

This is the multi to one backup, which is cost efficient. If one of the
worker hosts fails, you can subsitute the failed worker with the rescue
host, with the aid of any high available method, such as heartbeat
project. By this way, you can use 1 or 2 hosts to support the HA of more
than 3 servers.

Or you can also use it as an IDS(Intrusion Detection System) like a
realtime "tripware", or you can make a mirror chain that a host B mirrors
from A and be mirrored by C, etc ... I will also try to research a way
to use it as a distributed implemetation with one write and multi-read
model.

mirrord/fs_mirror makes use of inotify, which is a function afforded by
the recent Linux (from 2.6.12). It is a counterpart of FAM, since Linux
FAM has stopped so long.

Now it works for me, on a RHEL4 system and the LFS 6.2, I hope this tool
can be useful to you too.

Thanks.

-- 
------------------------------------------------------------------------
My Projects:
http://sourceforge.net/projects/crablfs
http://crablfs.sourceforge.net/
http://crablfs.sourceforge.net/#ru_data_man
http://crablfs.sourceforge.net/tree.html
http://cralbfs.sourceforge.net/sysadm_zh_CN.html
My Blog:
http://chowroc.blogspot.com/
http://hi.baidu.com/chowroc_z/
Looking for a space and platform to exert my originalities (for my
projects)...
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/0fb39285/attachment.html>

From __peter__ at web.de  Wed Oct 17 04:03:27 2007
From: __peter__ at web.de (Peter Otten)
Date: Wed, 17 Oct 2007 10:03:27 +0200
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de> <fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de> <fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
Message-ID: <ff4fke$8qm$01$2@news.t-online.com>

Raymond Hettinger wrote:

> [Diez B. Roggisch]
>> > out:) But I wanted a general purpose based solution to be available that
>> > doesn't count on len() working on an arbitrary iterable.
> 
> [Peter Otten]
>> You show signs of a severe case of morbus itertools.
>> I, too, am affected and have not yet fully recovered...
> 
> Maybe you guys were secretly yearning for a magical last element
> detector used like this:

Not secretly...

>     def lastdetecter(iterable):
>         it = iter(iterable)
>         value = it.next()
>         for nextvalue in it:
>             yield (False, value)
>             value = nextvalue
>         yield (True, value)

as that's what I posted above...

>     def lastdetecter(iterable):
>         "fast iterator algebra"
>         lookahead, t = tee(iterable)

          # make it cope with zero-length iterables 
          lookahead = islice(lookahead, 1, None)

>         return chain(izip(repeat(False), imap(itemgetter(1),
> izip(lookahead, t))), izip(repeat(True),t))

and that's the "somebody call the doctor -- now!" version ;)

Peter


From python at hope.cz  Thu Oct  4 14:50:44 2007
From: python at hope.cz (Johny)
Date: Thu, 04 Oct 2007 11:50:44 -0700
Subject: Python and SSL
In-Reply-To: <877im4xd0f.fsf@pobox.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
	<1191420037.564584.103300@50g2000hsm.googlegroups.com>
	<877im4xd0f.fsf@pobox.com>
Message-ID: <1191523844.528308.98180@y42g2000hsy.googlegroups.com>

Martin and John,
Thank you both for your replies
 Must I  have OpenSSL imported in my Python program?
So far I have been using only SSL  support.
Built-in SSL support works OK if I connect from my Python program
directly to SSL server ( but not via proxy).
L.



From aleax at mac.com  Sun Oct  7 15:55:29 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 12:55:29 -0700
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<47090d70$0$11610$3b214f66@tunews.univie.ac.at>
Message-ID: <1i5m6dd.i5hymvsbitihN%aleax@mac.com>

Mathias Panzenboeck <e0427417 at student.tuwien.ac.at> wrote:
   ...
> I only inserted them so I can see if the objects are really freed. How can
> I see that without a __del__ method?

You can use weakref.ref instances with finalizer functions - see the
long post I just made on this thread for a reasonably rich and complex
example.


Alex


From Frank.Aune at broadpark.no  Thu Oct 18 19:23:38 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Fri, 19 Oct 2007 01:23:38 +0200
Subject: ConfigParser preserving file ordering
Message-ID: <200710190123.39177.Frank.Aune@broadpark.no>

Hello,

I use ConfigParser and actually quite like it, EXCEPT that it doesnt preserve 
the section order of the original config file when writing a new. This 
behaviour is hopeless IMO, and I've been looking for alternatives.

I've been reading the interesting discussion on python-dev about improvements 
to ConfigParser:

http://mail.python.org/pipermail/python-dev/2006-January/060138.html

I know there are patches to archieve what I want, but tbh I need functionality 
present in the standard library or as a last option sub-class ConfigParser to 
archieve ordering preservation.

Since the thread above is nearly two years old, I'm wondering if something has 
happended in this department?

Thanks,
Frank


From besturk at gmail.com  Wed Oct 17 09:39:35 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 17 Oct 2007 06:39:35 -0700
Subject: Order by value in dictionary
Message-ID: <1192628375.254492.183140@i38g2000prf.googlegroups.com>

Hi..
I have a dictionary like these:
a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
element
I want to sort this by value and i want to first 100 element..
Result must be:
[b, a, d, c .....] ( first 100 element)

I done this using FOR and ITERATOR but it tooks 1 second and this is
very big time to my project.
I want to learn the fastest method..

I'm sorry my bad english.
Please help me.
King regards..



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 18:29:41 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 17 Oct 2007 00:29:41 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <13h6nlmd8aku2ea@corp.supernews.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>	<471308FA.3070705@islandtraining.com>	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>	<mailman.16.1192446949.13605.python-list@python.org>
	<13h6nlmd8aku2ea@corp.supernews.com>
Message-ID: <47153b8c$0$1277$426a34cc@news.free.fr>

Steven D'Aprano a ?crit :
(snip)
> def myreversed(sequence):
>     if isinstance(sequence, basestring):
>         return type(sequence)().join(reversed(sequence))
>     else:
>         return type(sequence)(reversed(sequence))
> 
> (in fact, that's so simple I wonder why the built-in reversed() doesn't 
> do that).

Because it returns an iterator, not a sequence. Building back the 
appropriate sequence type from when needed it is usually a definitive 
no-brainer, and there are case where you definitively *don't* want a 
full sequence to be built (like when iterating backward over a 
millions-element long list...).

Definitively the right design choice here IMHO.

My 2 cents


From tim.arnold at sas.com  Mon Oct 29 12:37:43 2007
From: tim.arnold at sas.com (Tim Arnold)
Date: Mon, 29 Oct 2007 12:37:43 -0400
Subject: elementtree w/utf8
References: <ffr11p$unf$1@foggy.unx.sas.com> <47245EE6.7050808@web.de>
Message-ID: <fg528n$gqs$1@foggy.unx.sas.com>


"Stefan Behnel" <stefan.behnel-n05pAM at web.de> wrote in message 
news:47245EE6.7050808 at web.de...
> Tim Arnold wrote:
>> On a related note, I have another question--where/how can I get the
>> cElementTree.py module? Sorry for something so basic, but I tried 
>> installing
>> cElementTree, but while I could compile with setup.py build, I didn't end 
>> up
>> with a cElementTree.py file anywhere.
>
> That's because it compiles into a binary extension module, not a plain 
> Python
> module (mind the 'c' in its name, which stands for the C language here).
>
> I don't know what the standard library extension is under HP-UX, but look 
> a
> little closer at the files that weren't there before, you'll find it.
> Depending on what you did to build it, it might also end up in the "build"
> directory or as an installable package in the "dist" directory.
>
>
>> The directory structure on my system
>> (HPux, but no root access) doesn't work well with setup.py install.
>
> That shouldn't be a problem as long as you keep the binary in your 
> PYTHONPATH.
>
> As suggested before, if you have Python 2.5, you don't even need to 
> install it
> yourself.
>
> Stefan

very nice--thanks. I saw the cElementTree.sl file, but didn't realize it 
would work as-is.
thanks,
--Tim




From http  Thu Oct 11 12:32:15 2007
From: http (Paul Rubin)
Date: 11 Oct 2007 09:32:15 -0700
Subject: Fwd: NUCULAR fielded text searchable indexing
References: <mailman.59.1192065699.927.python-list@python.org>
	<7xtzoynm64.fsf@ruckus.brouhaha.com>
	<1192108745.766895.156050@19g2000hsx.googlegroups.com>
Message-ID: <7xlka9629c.fsf@ruckus.brouhaha.com>

aaron.watters at gmail.com writes:
> > ...but it looks a little more akin to Solr than to Lucene. ...
> 
> I'm not sure but I think nucular has aspects of both since
> it implements both the search engine itself and also provides
> XML and HTTP interfaces

That sounds reasonable. 

> As a test I built an index with 10's of millions of entries
> using nucular and most queries through CGI processes clocked
> in in 100's of milliseconds or better -- which is quite acceptable,
> for many purposes.

How many items did each query return?  When I refer to large result
sets, I mean you often get queries that return 10k items or more (a
pretty small number: typing "python" into google gets almost 30
million hits) and you need to actually examine each item, as opposed
to displaying ten at a time or something like that (e.g. you want to
present faceted results).

> > So we're back to the perennial topic of parallelism in Python...
> 
> ...Which is not such a big problem if you rely on disk caching
> to provide the RAM access and use multiple processes to access
> the indices.

Right, another helpful strategy might be to use a solid state disk:

  http://www.newegg.com/Product/Product.aspx?Item=N82E16820147021


From mak at trisoft.com.pl  Tue Oct 30 20:29:11 2007
From: mak at trisoft.com.pl (Grzegorz Makarewicz)
Date: Wed, 31 Oct 2007 01:29:11 +0100
Subject: sgmlop - xmlrpclib - bang
Message-ID: <4727CC57.1000608@trisoft.com.pl>

simple data for simple test - my version fails after 10 loops
after removing sgmlop.pyd from DLLs - everything is working as expected

mak

#python
data='''\
<?xml version="1.0"?>
<methodCall>
  <methodName>mws.ScannerLogout</methodName>
  <params>
    <param>
      <value>
        <i4>7</i4>
      </value>
    </param>
  </params>
</methodCall>
'''

import xmlrpclib

def main():
    i = 1
    while 1:
        print i
        params, method = xmlrpclib.loads(data)
        i+=1
main()



From deets at nospam.web.de  Wed Oct 17 10:10:55 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 16:10:55 +0200
Subject: Write by logging.FileHandler to one file by many processess
References: <ff5397$j9g$1@nemesis.news.tpi.pl>
	<1192628746.196204.207620@t8g2000prg.googlegroups.com>
Message-ID: <5nmjffFiouurU4@mid.uni-berlin.de>

Alexandre Badez wrote:

> On Oct 17, 3:33 pm, Rafa  Zawadzki <blus... at jabberpl.org> wrote:
>> Hello.
>>
>> As I saw in logging source - there is no lock per file during making
>> emit() (only lock per thread).
>>
>> So, my question is - is it safe to log into one file using many
>> processess uses logging logger?
>>
>> Cheers,
>> --
>> bluszczhttp://vegan-planet.net
> 
> Well, there a dummy response: there is no true thread in Python (I
> mean CPython). So there is no problems in this case (cf global
> interpreter lock or GIL).

You didn't read the statement of the OP - he explicitly doesn't ask about
threads, but multiple processes writing to one file.

I presume things get messed up... but I don't know for sure.

Diez


From xah at xahlee.org  Thu Oct 18 00:15:26 2007
From: xah at xahlee.org (Xah Lee)
Date: Wed, 17 Oct 2007 21:15:26 -0700
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
Message-ID: <1192680926.420317.16630@v29g2000prd.googlegroups.com>

Elisp Tutorial: HTML Syntax Coloring Code Block

Xah Lee, 2007-10

This page shows a example of writing a emacs lisp function that
process a block of text to syntax color it by HTML tags. If you don't
know elisp, first take a gander at Emacs Lisp Basics.

HTML version with color and links is at:
http://xahlee.org/emacs/elisp_htmlize.html

---------------------------------------
THE PROBLEM

SUMMARY

I want to write a elisp function, such that when invoked, the block of
text the cursor is on, will have various HTML style tags wrapped
around them. This is for the purpose of publishing programing language
code in HTML on the web.

DETAIL

I write a lot computer programing tutorials for several computer
languages. For example: Perl and Python tutorial, Java tutorial, Emacs
Lisp tutorial, Javascript tutorial. In these tutorials, often there
are code snippets. These code need to be syntax colored in HTML.

For example, here's a elisp code snippet:

(if (< 3 2)  (message "yes") )

Here's what i actually want as raw HTML:

(<span class="keyword">if</span> (&lt; 3 2)  (message <span
class="string">"yes"</span>) )

Which should looks like this in a web browser:

(if (< 3 2)  (message "yes") )

There is a emacs package that turns a syntax-colored text in emacs to
HTML form. This is extremely nice. The package is called htmlize.el
and is written (1997,...,2006) by Hrvoje Niksic, available at
http://fly.srk.fer.hr/~hniksic/emacs/htmlize.el.

This program provides you with a few new emacs commands. Primarily, it
has htmlize-region, htmlize-buffer, htmlize-file. The region and
buffer commands will output HTML code in a new buffer, and the htmlize-
file version will take a input file name and output into a file.

When i need to include a code snippet in my tutorial, typically, i
write the code in a separate file (e.g. ?temp.java?, ?temp.py?), run
it to make sure the code is correct (compile, if necessary), then,
copy the file into the HTML tutorial page, inside a ?pre? block. In
this scheme, the best way for me to utilize htmlize.el program is to
use the ?html-buffer? command on my temp.java, then copy the htmlized
output and paste that into my HTML tutorial file inside a ?pre? block.
Since many of my tutorials are written haphazardly over the years
before seeing the need for syntax coloration, most exist inside ?pre?
tags already without a temp code file. So, in most cases, what i do is
to select the text inside the ?pre? tag, paste into a temp buffer and
invoke the right mode for the language (so the text will be fontified
correctly), then do htmlize-buffer, then copy the html output, then
paste back to replace the selected text.

This process is tedious. A tutorial page will have several code
blocks. For each, i will need to select text, create a buffer, switch
mode, do htmlize, select again, switch buffer, then paste. Many of the
steps are not pure push-buttons operations but involves eye-balling.
There are few hundred such pages.

It would be better, if i can place the cursor on a code block in a
existing HTML page, then press a button, and have emacs magically
replace the code block with htmlized version colorized for the code
block's language. We proceed to write this function.

---------------------------------------
SOLUTION

For a elisp expert who knows how fontification works in emacs, the
solution would be writing a elisp code that maps emacs's string's
fontification info into html tags. This is what htmlize.el do exactly.
Since it is already written, a elisp expert might find the essential
code in htmlize.el. (the code is licensed under GPL) .

Unfortunately, my lisp experience isn't so great. I spent maybe 30
minutes tried to look in htmlize.html in hope to find a function
something like htmlize-str that is the essence, but wasn't successful.
I figured, it is actually faster if i took the dumb and inefficient
approach, by writing a elisp code that extracts the output from
htmlize-buffer. Here's the outline of the plan of my function:

    * 1. Grab the text inside a <pre class="?lang?">...</pre> tag.
    * 2. Create a new buffer. Paste the code in.
    * 3. Make the new buffer ?lang? mode (and fontify it)
    * 4. Call htmlize-buffer
    * 5. Grab the (htmlized) text inside ?pre? tag in the htmlize
created output buffer.
    * 6. Kill the htmlize buffer and my temp buffer.
    * 7. Delete the original text, paste in the new text.

To achieve the above, i decided on 2 steps. A: Write a function
?htmlize-string? that takes a string and mode name, and returns the
htmlized string. B: Write a function ?htmlize-block? that does the
steps of grabbing text and pasting, and calls ?htmlize-string? for the
actual htmlization.

Here's the code of my htmlize-string function:

(defun htmlize-string (ccode mn)
"Take string ccode and return htmlized code, using mode mn.\n
This function requries the htmlize-mode.el by Hrvoje Niksic, 2006"
(let (cur-buf temp-buf temp-buf2 x1 x2 resultS)
    (setq cur-buf (buffer-name))
    (setq temp-buf "xout-weewee")
    (setq temp-buf2 "*html*") ;; the buffer that htmlize-buffer
creates

    ; put the code in a new buffer, set the mode
    (switch-to-buffer temp-buf)
    (insert ccode)
    (funcall (intern mn))

    (htmlize-buffer temp-buf)
    (kill-buffer temp-buf)
    (switch-to-buffer temp-buf2)

    ; extract the core code
    (setq x1 (re-search-forward "<pre>"))
    (setq x1 (+ x1 1))
    (re-search-forward "</pre>")
    (setq x2 (re-search-backward "</pre>"))
    (setq resultS (buffer-substring-no-properties x1 x2))
    (kill-buffer temp-buf2)

    (switch-to-buffer cur-buf)
    resultS
)
)

The major part in this code is knowing how to create, switch, kill
buffers. Then, how to set a mode. Lastly, how to grab text in a
buffer.

Current buffer is given by ?buffer-name?. To create or switch buffer
is done by ?switch-to-buffer?. Kill buffer is ?kill-buffer?. To
activate a mode, the code is ?(funcall (intern my-mode-name))?. I
don't know why this is so in detail, but it is interesting to know.

The grabbing text is done by locating the desired beginning and ending
locations using re-search functions, and buffer-substring-no-
properties for actually extracting the string.

Here, note the ?no-properties? in ?buffer-substring-no-properties?.
Emacs's string can contain information called properties, which is
essentially the fontification information.

Reference: Elisp Manual: Buffers.

Reference: Elisp Manual: Text-Properties.

Here's the code of my htmlize-block function:

(defun htmlize-block ()
  "Replace the region enclosed by <pre> tag to htmlized code.
For example, if the cursor somewhere inside the tag:

<pre cla ss=\"code\">
codeXYZ...
</pre>

after calling, the ?codeXYZ...? block of text will be htmlized.
That is, wrapped with many <span> tags.

The opening tag must be of the form <pre cla ss=\"lang-str\">.
The ?lang-str? determines what emacs mode is used to colorize
the code.
This function requires htmlize.el by Hrvoje Niksic."

(interactive)
(let (mycode tag-begin styclass code-begin code-end tag-end mymode)
  (progn
    (setq tag-begin (re-search-backward "<pre class=\"\\([A-z-]+\\)
\""))
    (setq styclass (match-string 1))
    (setq code-begin (re-search-forward ">"))
    (re-search-forward "</pre>")
    (setq code-end (re-search-backward "<"))
    (setq tag-end (re-search-forward "</pre>"))
    (setq mycode (buffer-substring-no-properties code-begin code-end))
    )
  (cond
   ((equal styclass "elisp") (setq mymode "emacs-lisp-mode"))
   ((equal styclass "perl") (setq mymode "cperl-mode"))
   ((equal styclass "python") (setq mymode "python-mode"))
   ((equal styclass "java") (setq mymode "java-mode"))
   ((equal styclass "html") (setq mymode "html-mode"))
    ((equal styclass "haskell") (setq mymode "haskell-mode"))
   )
  (save-excursion
    (delete-region code-begin code-end)
    (goto-char code-begin)
    (insert (htmlize-string mycode mymode))
    )
  )
)

The steps of this function is to grab the text inside a ?pre? block,
call htmlize-string, then insert the result replacing text.

Originally, i wrote the code to grab text by inside plain ?<pre>...</
pre>? tags, then use some heuristics to determine what language it is,
then call htmlize-string with the mode-name passed to it. However,
since my html pages already has the language information in the form
of ?<pre class="?lang?">...</pre>? (for CSS reasons), so, now i search
text by that form, and use the ?lang? part to determine a mode.

Emacs is beautiful.

Postscript:

The story given above is slightly simplified. For example, when i
began my language notes and commentaries, they were not planned to be
some systematic or sizable tutorial. As the pages grew, more quality
are added in editorial process. So, a plain un-colored code inside
?pre? started to have ?language comment? strings colorized (e.g.
?<span class="cmt">#...</span>), by using a simple elisp code that
wraps a tag on them, and this function is mapped to shortcut key for
easy execution. As pages and languages grew, i find colorizing comment
isn't enough, then i started to look for a syntax-coloring html
solution. There are solutions in Perl, Python, PHP, but I find emacs
solution best suites my needs in particular because it integrates with
emacs's interactive nature, and my writing work is done in a
accumulative, editorial process.

In the beginning i used htmlize-region and htmlize-buffer as they are
for new code. Note that this is still a laborious process. Gradually i
need to colorized my old code. The problem is that many already
contain my own ?span class="cmt"? tags, and strings common in computer
languages such as ?<=? have already been transformed into required
html encoding ?&lt;=?. So, the elisp code will first ?un-htmlize?
these in my htmlize-block code. But once all my existing code has been
so newly colorized, the part of code to transform strings for un-
htmlize is no longer necessary, so they are taken out in htmlize-block
and resumes a cleaner state. Also, htmlize-block went thru many
revisions over the year. Sometimes in recent past, i had one code
wrapper for each language. For example, i had htmlize-me-perl, htmlize-
me-python, htmlize-me-java, etc. The need for unification into a
single coherent wrapper code didn't materialize. In general, it is my
experience, in particular in writing elisp customization for emacs,
that tweaking code periodically thru the year is practical, because it
adapts to the constant changes of requirements, environment, work
process. For example, eventually i might write my own htmlize.el, if i
happen to need more flexibility, or if my elisp experience
sufficiently makes the job relatively easy.

Also note: a whole-sale solution is to write a program, in say,
Python, that process html files and replace proper sections by
htmlized string. This is perhaps more efficient if all the existing
html files are in some uniform format. However, i need to work on my
tutorials on a case-by-case basis. In part, because, some pages
contain multiple languages or contains pseudo-code that i do not wish
colorized. (For example, some pages contains codes of the Mathematica?
language. Mathematica code is normally done in Mathematica's
mathematical typesetting capable ?front-end? IDE called ?Notebook? and
is not ?syntax-colored? as such.)

  Xah
  xah at xahlee.org
? http://xahlee.org/



From jcd at sdf.lonestar.org  Mon Oct 22 06:54:38 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Mon, 22 Oct 2007 06:54:38 -0400
Subject: if..else stmt
In-Reply-To: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
References: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
Message-ID: <471C816E.8000206@sdf.lonestar.org>

bigden007 wrote:
> Hi,
> I have a if..else statement in my script. The statements all execute
> fine, but the problem is , even if the IF part of the statement is
> true, the else part executes as well. The verion of pythin i use 2.5
> Any help is appreciatiated.
>
> Regards
>
> Big Den.
>
>   
Your else statement is incorrectly indented.  The interpreter treats it
as part of the for-loop construct inside the if statement rather than as
part of the if statement itself.  See the recent thread about for-else
constructs for more details.

If your problem is not obvious yet, make sure you aren't mixing spaces
and tabs.

:)



From jcd at sdf.lonestar.org  Fri Oct 26 19:29:47 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Fri, 26 Oct 2007 19:29:47 -0400
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <87tzodii6i.fsf@benfinney.id.au>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
Message-ID: <4722786B.7050101@sdf.lonestar.org>

Ben Finney wrote:
> Matimus <mccredie at gmail.com> writes:
>
>   
>> The trailing L [for 'long' literals] is going away in Python 3.0.
>>     
>
> Yes. On the other hand, we are gaining '0bNNNN' for binary literals,
> to go along with '0oNNNN' for octal and '0xNNNN' for hexadecimal.
>
> So, the original poster might get further by proposing an '0dNNN.NNN'
> syntax for 'decimal.Decimal' literals. 
It would rather be remarkably inconsistent and confusing. 

Python 3.0a1 (py3k:57844, Aug 31 2007, 16:54:27) [MSC v.1310 32 bit
(Intel)] on win32
<snip>
>>> type(0b1)
<type 'int'>
>>> type(0o1)
<type 'int'>
>>> type(0x1)
<type 'int'>
>>> assert 0b1 is 0x1
>>>

<hypothetical code>
>>> type(0d1)
<class 'decimal.Decimal'>
>>> assert 0b1 is 0d1
Traceback (most recent call last):
  File "<pyshell#8>", line 1, in <module>
    assert 0b1 is 0d1
AssertionError

</hypothetical code>

It would also be unkind to people with dyslexia.

Cheers,
Cliff



From adurdin at gmail.com  Wed Oct 17 09:13:28 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Wed, 17 Oct 2007 14:13:28 +0100
Subject: Inheriting automatic attributes initializer considered harmful?
In-Reply-To: <ff4rc5$ill$1@newsreader2.netcologne.de>
References: <ff4rc5$ill$1@newsreader2.netcologne.de>
Message-ID: <59e9fd3a0710170613p1a6df25ejbefb72a1a09429f@mail.gmail.com>

On 10/17/07, Thomas Wittek <mail at gedankenkonstrukt.de> wrote:
>
> Writing such constructors for all classes is very tedious.
> So I subclass them from this base class to avoid writing these constructors:
>
>   class AutoInitAttributes(object):
>       def __init__(self, **kwargs):
>           for k, v in kwargs.items():
>               getattr(self, k) # assure that the attribute exits
>               setattr(self, k, v)
>
> Is there already a standard lib class doing (something like) this?
> Or is it even harmful to do this?

It depends on your kwargs and where they're coming from.  You could do
something like this, for example:

    def fake_str(self):
        return "not a User"

    u = User(__str__=fake_str)
    str(u)


Does SQLAlchemy let you get a list of column names? If so you could do:

class AutoInitAttributes(object):
    def __init__(self, **kwargs):
        valid_attrs = set(get_column_names_from_sqlalchemy())
        # Only set valid attributes, ignoring any other kwargs
        for k in set(kwargs.keys()) & valid_attrs:
               setattr(self, k, kwargs[k])

Andrew


From bj_666 at gmx.net  Wed Oct 17 03:58:07 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 17 Oct 2007 07:58:07 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
Message-ID: <5nltkfFiva37U1@mid.uni-berlin.de>

On Wed, 17 Oct 2007 00:33:59 -0700, paul.melis wrote:

> On Oct 10, 8:23 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> > However, it is not true that += "always leads to a rebinding of a to the
>> > result of the operation +". The + operator for lists creates a new list.
>> > += for lists does an in-place modification:
>>
>> It still is true.
>>
>> a += b
>>
>> rebinds a. Period. Which is the _essential_ thing in my post, because
>> this rebinding semantics are what confused the OP.
> 
> Doesn't this depend on wether "a" supports __iadd__ or not?

No.  As shown several times in this thread already.

> Section 3.4.7 of the docs say
> 
> """
> If a specific method is not defined, the augmented operation falls
> back to the normal methods. For instance, to evaluate the expression x
> +=y, where x is an instance of a class that has an __iadd__() method,
> x.__iadd__(y) is called. If x is an instance of a class that does not
> define a __iadd__() method, x.__add__(y) and y.__radd__(x) are
> considered, as with the evaluation of x+y.
> """
> 
> So if a.__iadd__ exists, a += b is executed as a.__iadd__(b), in which
> case there's no reason to rebind a.

`__iadd__` *may* doing the addition in place and return `self` but it is
also allowed to return a different object.  So there is always a rebinding.

> However, this confuses the heck out of me:
> 
>>>> class A:
> ...     l = []
> ...
>>>> class B(A): pass
> ...
>>>> B.__dict__
> {'__module__': '__main__', '__doc__': None}
>>>> B.l
> []
>>>> B.l.append('1')
>>>> B.l
> ['1']
>>>> B.__dict__
> {'__module__': '__main__', '__doc__': None}
>>>> B.l.__iadd__('2')
> ['1', '2']

Here you see that the method actually returns an object!

>>>> B.l
> ['1', '2']
>>>> B.__dict__
> {'__module__': '__main__', '__doc__': None}
>>>> B.l += '3'
>>>> B.__dict__
> {'__module__': '__main__', '__doc__': None, 'l': ['1', '2', '3']}
> 
> Why is B.l set for the += case only? B.l.__iadd__ obviously exists.

Because there is always a rebinding involved.

Ciao,
	Marc 'BlackJack' Rintsch


From Scott.Daniels at Acm.Org  Wed Oct 10 23:39:58 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 10 Oct 2007 20:39:58 -0700
Subject: Version specific or not?
In-Reply-To: <mailman.27.1192027753.927.python-list@python.org>
References: <mailman.27.1192027753.927.python-list@python.org>
Message-ID: <13gr6kqsdlue6db@corp.supernews.com>

Steven W. Orr wrote:
> We have an app and I'm trying to decide where the app ... .
> /usr/lib/python2.3/site-packages
> or
> /usr/lib/site-python
> 
> The latter would solve a lot of problems for me.
Fewer than you suspect

> If there are multiple versions of python installed on the same machine, 
> having a shebang that just looked for /usr/bin/python would make my life 
> a lot easier.

> * Since we distribute .pyo files, is there an issue if the .pyo was 
> built with 2.3.5 and then executed by 2.4 or 2.5?

Each python M.N.X has its own byte code for distinct values of M and/or N.
So, if you had a shared directory, not only would your users have to
be able to write to the shared directory (when they import mumble, and
mumble.pyc or mumble.pyo has been generated by a different version of
Python, they will recompile mumble.py and rewrite mumble.pyc (or .pyo).

-Scott David Daniels
Scott.Daniels at Acm.Org


From arkanes at gmail.com  Fri Oct 12 16:21:48 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Fri, 12 Oct 2007 15:21:48 -0500
Subject: Declarative properties
In-Reply-To: <pan.2007.10.12.18.55.42.630018@gmail.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
	<470f2522$0$12106$426a74cc@news.free.fr>
	<pan.2007.10.12.18.55.42.630018@gmail.com>
Message-ID: <4866bea60710121321y7a0b2215t9268942d9d21337b@mail.gmail.com>

On 10/12/07, Dan Stromberg <dstromberglists at gmail.com> wrote:
> On Fri, 12 Oct 2007 09:42:28 +0200, Bruno Desthuilliers wrote:
>
> >>> So what?  Otherwise you carry *always* the baggage of a public
> >>> property and a private attribute whether you need this or not.  At
> >>> least for me it would be unnecessary in most cases.
> >>
> >> That "baggage" of carrying around "unneeded" methods is something the
> >> computer carries for you - IE, no big deal in 99.99% of all cases.
> >
> > 1/ Accessing the value of a property is not free. Accessing a plain
> > attribute is much cheaper.
>
> Python's current performance characteristics have no bearing on what is
> good software engineering practice in general, and little bearing on what
> is good software engineering practice in python.  Even from a
> strictly "what's good for python" perspective, if we limit our view of
> "good SE practice" to what python can express well right now (and IMO,
> python can express this fine, but you seem to be arguing it cannot),
> that needlessly limits python's evolution.
>
> I'm not omniscient, and neither is anyone else; when one initially codes a
> class, one doesn't know to what purposes it will need to be bent in the
> future; using accessor methods instead of exposed attributes is
> significantly more flexible for the future of your class.

This is simply not true in Python, and anyone who thinks it is hasn't
the slightest understanding of the consequences of dynamic vs static
lookup. The best practice (in C++, which Java inherited) of using
accessors is because changing a public attribute to a property  broke
your interface, and all the clients of your code needed to be altered.
Later languages, like C#, introduced syntax support for properties,
which improved the situation such that clients didn't need to be
re-written, but only recompiled.

Python, however, uses truly dynamic attribute lookup and there is
*zero* cost to clients in a change from a public attribute to a
property.

Writing accessors in a language that doesn't have the pressures that
introduced them is cargo cult programming, not Software Engineering.

>In fact, I may
> even go so far as to say that public attributes would be good to leave out
> of future languages that don't have a lot of backward compatibility
> baggage.
>

>From a reasonable point of view, Python doesn't have public
attributes, it just has things that syntactically look like them.
Discuss!

> It may not be traditional to use accessor methods in python.  It may even
> be a more expensive operation.  But neither of these make accessor methods
> a bad idea in the abstract.
>

Of course not, that's why Python supports properties. What's being
called the anti-pattern here is the creation-by-default of trivial
accessors.

> > 2/ cluttering the class's namespace with useless names and the source
> > code with useless code is definitively not a good thing.
>
> Adding two clear and flexible methods and eliminating one clear and
> inflexible attribute is not namespace clutter.  It's paydirt.
>

No, you kept the attribute and also added (at least) 2 methods.

> The performance expense in the vast majority of cases is tiny compared to
> the human expense of going back and fixing a design bug if anything
> significant has been hinging on your exposed implementation detail.
>

You still don't know what language you're writing in, do you? There is
zero additional cost associated with changing a public attribute to a
property.

> Unless, that is, you don't think your code is important enough to be
> stretched to another, previously unforeseen purpose someday.  If you're
> coding for a hobby, and enjoy coding for the sake of coding irrespective
> of how long it takes, rather than as a means to a valuable end, maybe
> needlessly exposing attributes is a Really Good Idea.
>

Ah, the old "my code is way more important than yours, so what I do is
right" approach. You hang out in the Java world a lot, don't you?

> My implementation may or may not be lacking (feel free to improve it - in
> fact, please do!), but that's irrelevant to the heart of the matter, which
> is "what you didn't think to plan for now most definitely can hurt you
> later".
>

Your implementation is, quite possibly, the worst possible
implementation of automatic properties in Python, both in terms of
readability and code size (and thus maintenance), as well as
performance and flexibility. The fact that you consider it, even for a
moment, to be better than writing accessors when and if you need them
(and not writing them otherwise) belies a dreadful lack of self
awareness.

> If you have a program that needs to perform well, you're much better off
> coding your classes the best way you know how from a Software Engineering
> perspective, and using pysco or shedskin or pypy or similar to
> improve performance.  If that's not enough, then you're better off
> profiling the program, and only after that should you recode the critical
> portions into something like pyrex or a C extension module, or -maybe-
> some python "tricks".  I'd argue that trick-free C or C++ is normally
> better than python with tricks from a performance vantage -and- from an SE
> viewpoint.
>

You're not going to teach anyone on this list anything about
optimizing, I suspect.

> Little hackish tricks for performance's sake scattered throughout a
> program are very wasteful of something more precious than CPU time.
>

It's truly bizarre to hear someone refer to *not* writing code as a
"hackish trick". Especially when the alternative they prevent depends
on eval!

>


From ldo at geek-central.gen.new_zealand  Thu Oct  4 03:54:09 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 20:54:09 +1300
Subject: Web service client using https
References: <1191483648.610569.219510@g4g2000hsf.googlegroups.com>
Message-ID: <fe2671$vgh$3@lust.ihug.co.nz>

In message <1191483648.610569.219510 at g4g2000hsf.googlegroups.com>, 
welcomestocontact at gmail.com wrote:

>        I am trying to connect .NET web service using HTTPS. I wrote a
> python script using https. For that need to send SOAP message to the
> server. But it is giving error 401.3 execution access is denied.(SOAP
> message not processing)

Does it work over non-secure HTTP, just for comparison? (I know, don't do it
for production use, only for testing.)

Are you able to compare your code with some other working code? You could
try concatenating the complete request into a text file and sending that
with wget, to see if it works.



From raims at dot.com  Sat Oct  6 10:04:38 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sat, 6 Oct 2007 16:04:38 +0200
Subject: Yet another comparison of Python Web Frameworks
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<1i5kbfo.xq3fut1f7ouujN%raims@dot.com>
	<kh7kt4-v7q.ln1@strongwill.g2ctech>
Message-ID: <1i5kk06.enf7ws1juj4zkN%raims@dot.com>

Jorge Godoy <jgodoy at gmail.com> wrote:
> What is good, since a lot of good things from Pylons will work with TG and a
> lot of good TG things will remain (and possibly be compatible with Pylons).
> If you take a better look at "the next version", you'll also see that the
> major concern was with WSGI support and reinventing / "rewriting" the wheel
> (what TG developers don't want to do all the time).

Not reinventing the wheel just don't feel as a universal dogma to me. I
developed quite a bit with Django and I was glad they started from
scratch. On the paper reusing different and existing projects is great
but not always is good or done the right way. Anyway I don't know TG at
all so I'm speaking in a figurative way.

We (Michele, myself and our colleagues) have a series of stuff we need
to stick to so the choosing of a web framework ain't that easy. Most of
the frameworks are a vision of the author of how to do things from
scratch but a framework (by definition an evolution of a library) is not
always meant to be used when the scratch is far from your starting
point. 

I'd like to read some commenting of Michele's thoughts, they would be
really useful.

:-)

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From shafik23 at gmail.com  Fri Oct  5 13:36:10 2007
From: shafik23 at gmail.com (Shafik)
Date: Fri, 05 Oct 2007 10:36:10 -0700
Subject: Starting a thread before wxPython bootup ... interesting.
In-Reply-To: <13gb3284gqn0j6b@corp.supernews.com>
References: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
	<13gb3284gqn0j6b@corp.supernews.com>
Message-ID: <1191605770.166713.284950@22g2000hsm.googlegroups.com>

My apologies for not supplying more info, I am at work and I am
technically not allowed to surf the web for anything.

I am using Python 2.5.1,  the latest wx version (2.8.xx, I dont recall
exactly). This is running under windows XP under the latest version of
cygwin (that could be the source of the issues too).

I was just looking for a general way to approach wx and
multithreading, not a detailed solution to my problem. There are lots
of tutorials online that describe how to perform a time-consuming task
in a separate thread in a wx-gui, but nothing that describes any other
use cases.

The real goal is to start the gui in a different thread, and have the
main thread regain control. That seems like a feasible thing to be
able to do, though I have been unsuccessful ... if anyone would like
to suggest something without being covertly insulting, I'm all ears.


Thanks,
--Shafik

On Oct 4, 5:58 pm, "[david]" <da... at nospam.spam> wrote:
> Since the observed behaviour is clearly undefined,
> I forgive you for the poorly specified behaviour
> description: asking for a close description of random
> behaviour is just ridiculous.
>
> The most obvious point is that wx is not re-entrant
> or thread safe: you have to make it so by using
> wx.CallAfter()
>
> Since you are talking about a bug in your screen
> display while using a screen library, it would
> also be interesting it you described the environment:
> Which operating system? Which windowing system?
> Which wx library? Which Python? Which IDE? What code?
>
> [david]
>
> Shafik wrote:
> > Hello folks,
>
> > I'm having an issue with mixing wxPython and threading ... I realize
> > multi-threading always introduces subtle bugs, but the following
> > scenario is just odd:
>
> > I start a dummy thread, that does nothing but increment a counter and
> > print its value to the screen, then afterwards, I start the wxPython
> > application. I get nothing but weird behavior: sometimes the gui just
> > crashes, sometimes I get an exception, sometimes it runs for a little
> > but very slowly ...
>
> > Anyone know whats going on? I have a dual-core T5500, so multi
> > threading is piece of cake for it hardware -wise.
>
> > Cheers,
> > --Shafik




From lycka at carmen.se  Tue Oct  2 09:09:48 2007
From: lycka at carmen.se (Magnus Lycka)
Date: Tue, 02 Oct 2007 15:09:48 +0200
Subject: python 2.5 and 3gb switch
In-Reply-To: <fdkan6$ne0$1@aioe.org>
References: <fdkan6$ne0$1@aioe.org>
Message-ID: <fdtfus$rtv$1@wake.carmen.se>

neil wrote:
> I see python is not really there for 64 bit yet but most of the people 

I think you mean "Windows is not really there for 64 bit yet".
Python works well on real 64 bit operating system. Blender
does too I presume.


From martin at v.loewis.de  Wed Oct 31 14:46:55 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 31 Oct 2007 19:46:55 +0100
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <1193853812.998544.113780@y27g2000pre.googlegroups.com>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
	<1193813238.978699.154830@57g2000hsv.googlegroups.com>
	<47288E4D.6010301@v.loewis.de>
	<1193847896.441329.315560@o80g2000hse.googlegroups.com>
	<4728afce$0$7845$9b622d9e@news.freenet.de>
	<1193853812.998544.113780@y27g2000pre.googlegroups.com>
Message-ID: <4728cda0$0$4583$9b622d9e@news.freenet.de>

>  Those TK libraries  tcllib=None tklib=None tcl_includes=None
> tk_includes=None

This also contradicts your earlier statement that you have libtk8.4.so
on your machine.


> I don't understand why the headers report None as the file tk.h is
> in   /usr/include ... or is the lack of the word generic more of a
> problem?

Please read detect_tkinter in detail: if it already fails to find
tklib or tcllib, it won't check for header files at all.

You should now trace through find_library_file with
print statements. Check whether compiler.find_library_file
returns not None, if yes, report what it returns. Otherwise,
annotate compiler.find_library_file. Print compiler.find_library_file
to see what specific function it is; likely something in
unixccompiler.py.

If so, print out shared, dylib, static, and os.path.exists of each one.

HTH,
Martin


From michele.simionato at gmail.com  Fri Oct 19 00:43:59 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Fri, 19 Oct 2007 04:43:59 -0000
Subject: Noob questions about Python
In-Reply-To: <1192751078.506979.170580@z24g2000prh.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192687508.636842.49940@z24g2000prh.googlegroups.com>
	<1192751078.506979.170580@z24g2000prh.googlegroups.com>
Message-ID: <1192769039.357773.156100@q5g2000prf.googlegroups.com>

On Oct 18, 7:44 pm, MRAB <goo... at mrabarnett.plus.com> wrote:
> It returns '' when number == 0, so you need to test for that case:
>
> > def baseN(number, N=2):
> >     """
> >     >>> baseN(9, 2)
> >     '1001'
> >     """
> >     assert 2 <= N <= 10
> >     assert isinstance(number, int) and number >= 0
>
>     if number == 0:
>         return "0"
>
> >     b = []
> >     while number:
> >         b.append(str(number % N))
> >         number /= N
> >     return ''.join(reversed(b))

Right, or you can just change the last line:

    return ''.join(reversed(b)) or '0'


 Michele Simionato



From thermostat at gmail.com  Wed Oct 24 13:26:03 2007
From: thermostat at gmail.com (Dan)
Date: Wed, 24 Oct 2007 17:26:03 -0000
Subject: optparse help output
In-Reply-To: <mailman.417.1193241732.13605.python-list@python.org>
References: <1193240835.563154.113810@e9g2000prf.googlegroups.com>
	<mailman.417.1193241732.13605.python-list@python.org>
Message-ID: <1193246763.834306.68660@i13g2000prf.googlegroups.com>

On Oct 24, 12:06 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> > I've been using optparse for a while, and I have an option with a
> > number of sub-actions I want to describe in the help section:
>
> >     parser.add_option("-a", "--action",
> >                       help=\
>
> [snipped formatted help]> """)
>
> > Unfortunately, when I run the script with --help, this is what I get
> > for the -a option:
>
> [snipped munged formatting of help]
>
> > Is there any way to get the formatting I want?
>
> I had the same issue:
>
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/...
>
> and was directed by Ben Finney to check out a custom formatter.
> I got it working to my satisfaction and posted it in that thread:
>
> http://groups.google.com/group/comp.lang.python/msg/09f28e26af0699b1
>
> It may be a little more kind in what it does with your help-text.
>   If you need variant behavior you can take my code and mung it
> even further.
>
> The changes are basically a copy&paste (including the comments,
> which Steven D'Aprano suggested might be better made into
> docstrings) of the format_description() and format_option() calls
> from the standard-library's source, and changing a few small
> lines to alter the behavior of calls to textwrap.*
>
> Hope this helps,
>
> -tkc

Thanks, Tim!

That was incredibly helpful. I did alter it to format paragraphs, but
maintain the double newlines. Also, I made a few changes to work with
the 2.3 version of optparse. Posted below for anyone who might want
it. (Also to work as a standalone .py file)

-Dan


# From Tim Chase via comp.lang.python.

from optparse import IndentedHelpFormatter
import textwrap

class IndentedHelpFormatterWithNL(IndentedHelpFormatter):
  def format_description(self, description):
    if not description: return ""
    desc_width = self.width - self.current_indent
    indent = " "*self.current_indent
# the above is still the same
    bits = description.split('\n')
    formatted_bits = [
      textwrap.fill(bit,
        desc_width,
        initial_indent=indent,
        subsequent_indent=indent)
      for bit in bits]
    result = "\n".join(formatted_bits) + "\n"
    return result

  def format_option(self, option):
    # The help for each option consists of two parts:
    #   * the opt strings and metavars
    #   eg. ("-x", or "-fFILENAME, --file=FILENAME")
    #   * the user-supplied help string
    #   eg. ("turn on expert mode", "read data from FILENAME")
    #
    # If possible, we write both of these on the same line:
    #   -x    turn on expert mode
    #
    # But if the opt string list is too long, we put the help
    # string on a second line, indented to the same column it would
    # start in if it fit on the first line.
    #   -fFILENAME, --file=FILENAME
    #       read data from FILENAME
    result = []
    opts = option.option_strings
    opt_width = self.help_position - self.current_indent - 2
    if len(opts) > opt_width:
      opts = "%*s%s\n" % (self.current_indent, "", opts)
      indent_first = self.help_position
    else: # start help on same line as opts
      opts = "%*s%-*s  " % (self.current_indent, "", opt_width, opts)
      indent_first = 0
    result.append(opts)
    if option.help:
      help_text = option.help
# Everything is the same up through here
      help_lines = []
      help_text = "\n".join([x.strip() for x in
help_text.split("\n")])
      for para in help_text.split("\n\n"):
        help_lines.extend(textwrap.wrap(para, self.help_width))
        if len(help_lines):
          # for each paragraph, keep the double newlines..
          help_lines[-1] += "\n"
# Everything is the same after here
      result.append("%*s%s\n" % (
        indent_first, "", help_lines[0]))
      result.extend(["%*s%s\n" % (self.help_position, "", line)
        for line in help_lines[1:]])
    elif opts[-1] != "\n":
      result.append("\n")
    return "".join(result)



From jeremy+complangpython at jeremysanders.net  Mon Oct 29 05:34:18 2007
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Mon, 29 Oct 2007 09:34:18 +0000
Subject: ANN: Veusz 1.0 - a scientific plotting package
Message-ID: <fg49eq$nnh$1@gemini.csx.cam.ac.uk>

I'm pleased to announce Veusz 1.0. Source, windows and linux i386 binaries
are available. Jeremy Sanders

Veusz 1.0
---------
Velvet Ember Under Sky Zenith
-----------------------------
http://home.gna.org/veusz/

Veusz is Copyright (C) 2003-2007 Jeremy Sanders <jeremy at jeremysanders.net>
Licenced under the GPL (version 2 or greater).

Veusz is a scientific plotting package written in Python, using PyQt4
for display and user-interfaces, and numpy for handling the numeric
data. Veusz is designed to produce publication-ready Postscript/PDF
output. The user interface aims to be simple, consistent and powerful.

Veusz provides a GUI, command line, embedding and scripting interface
(based on Python) to its plotting facilities. It also allows for
manipulation and editing of datasets.

Feature changes from 0.99.0:
 * Import of Text datasets
 * Labels can be plotted next to X-Y points
 * Numbers can be directly plotted by entering into X-Y datasets as X and Y
 * More line styles
 * Loaded document and functions are checked for unsafe Python features
 * Contours can be labelled with numbers
 * 2D dataset creation to make 2D datasets from x, y, z 1D datasets

Bug and minor fixes from 0.99.0:
 * Zooming into X-Y images works now
 * Contour plots work on datasets with non equal X and Y sizes
 * Various fixes for datasets including NaN or Inf
 * Large changes to data import filter to support loading strings (and dates
   later)
 * Reduce number of undo levels for memory/speed
 * Text renderer rewritten to be more simple
 * Improved error dialogs
 * Proper error dialog for invalid loading of documents

Features of package:
 * X-Y plots (with errorbars)
 * Line and function plots
 * Contour plots
 * Images (with colour mappings and colorbars)
 * Stepped plots (for histograms)
 * Fitting functions to data
 * Stacked plots and arrays of plots
 * Plot keys
 * Plot labels
 * LaTeX-like formatting for text
 * EPS/PDF/PNG export
 * Scripting interface
 * Dataset creation/manipulation
 * Embed Veusz within other programs
 * Text, CSV and FITS importing

Requirements:
 Python (2.3 or greater required)
   http://www.python.org/
 Qt >= 4.3 (free edition)
   http://www.trolltech.com/products/qt/  
 PyQt >= 4.3 (SIP is required to be installed first)
   http://www.riverbankcomputing.co.uk/pyqt/
   http://www.riverbankcomputing.co.uk/sip/
 numpy >= 1.0
   http://numpy.scipy.org/
 Microsoft Core Fonts (recommended for nice output)
   http://corefonts.sourceforge.net/
 PyFITS >= 1.1 (optional for FITS import)
   http://www.stsci.edu/resources/software_hardware/pyfits

For documentation on using Veusz, see the "Documents" directory. The
manual is in pdf, html and text format (generated from docbook).

Issues:
 * Reqires a rather new version of PyQt, otherwise dialogs don't work.
 * Can be very slow to plot large datasets if antialiasing is enabled.
   Right click on graph and disable antialias to speed up output.
 * The embedding interface appears to crash on exiting.

If you enjoy using Veusz, I would love to hear from you. Please join
the mailing lists at

https://gna.org/mail/?group=veusz

to discuss new features or if you'd like to contribute code. The
latest code can always be found in the SVN repository.



From timr at probo.com  Thu Oct 25 02:19:47 2007
From: timr at probo.com (Tim Roberts)
Date: Thu, 25 Oct 2007 06:19:47 GMT
Subject: Python on Intel A110?
References: <2007102314041416807-bob@passcalnmtedu>
Message-ID: <fad0i314br6g3car6r75g3mratdd0et3cu@4ax.com>

Bob Greschke <bob at passcal.nmt.edu> wrote:
>
>Will the "stock" Windows version of Python install on a Samsung Q1U-EL 
>UMPC running Vista and with an Intel A110 processor?

ANYTHING that runs Vista will run Python.

>I want to do some 
>development and just happened to think about this.  I don't know what 
>these processors are compatible with at the binary level.

Binary compatibility isn't so important.  Python can be built from source.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From horpner at yahoo.com  Wed Oct 31 08:44:53 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 31 Oct 2007 12:44:53 GMT
Subject: A Python 3000 Question
References: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<mailman.653.1193760145.13605.python-list@python.org>
Message-ID: <slrnfigtq9.1mk.horpner@FIAD06.norwich.edu>

On 2007-10-30, Jean-Paul Calderone <exarkun at divmod.com> wrote:
> On Tue, 30 Oct 2007 15:25:54 GMT, Neil Cerutti <horpner at yahoo.com> wrote:
>>On 2007-10-30, Eduardo O. Padoan <eduardo.padoan at gmail.com> wrote:
>>> This is a FAQ:
>>> http://effbot.org/pyfaq/why-does-python-use-methods-for-some-functionality-e-g-list-index-but-functions-for-other-e-g-len-list.htm
>>
>>Holy Airy Persiflage Batman!
>>
>>Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
>>win32
>>Type "help", "copyright", "credits" or "license" for more information.
>>>>> import timeit
>>>>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
>>0.20332271187463391
>>>>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>>0.48545737364457864
>
> Not sure what you're trying to demonstrate.  

That len as a builtin can be faster than len as an attribute, and
doesn't need any further explanation than that.

> Here's another pointless transcript, though:
>
>     exarkun at charm:~$ python -m timeit -s '
>     seq = range(100)
>     ' 'len(seq)'
>     1000000 loops, best of 3: 0.211 usec per loop
>     exarkun at charm:~$ python -m timeit -s '
>     seq = range(100)
>     ' 'seq.__len__()'
>     1000000 loops, best of 3: 0.317 usec per loop
>     exarkun at charm:~$ python -m timeit -s '
>     class X(object):
>       def __len__(self): return 100
>     seq = X()
>     ' 'seq.__len__()'
>     1000000 loops, best of 3: 0.427 usec per loop
>     exarkun at charm:~$ python -m timeit -s '
>     class X(object):
>       def __len__(self): return 100
>     seq = X()
>     ' 'len(seq)'
>     1000000 loops, best of 3: 0.701 usec per loop
>     exarkun at charm:~$
>
> I guess we've learned that sometimes something is faster than
> something else, and other times the contrary.

It demonstratess that len is faster than __len__ for lists (and
probably for all builtin types) but not for user defined type X
(and probably not for any user defined type).

Or it may demonstrate that I'm all wet. If so, I've brought my
shampoo.

But if I'm wrong about the performance benefits then I guess I'm
still in the dark about why len is a builtin. The only compelling
thing in the linked explation was the signatures of the guys who
wrote the artible. (Guido does admit he would, "hate to lose it
as a builtin," but doesn't explain why that should be a bad
thing).

-- 
Neil Cerutti
It isn't pollution that is hurting the environment; it's the impurities in our
air and water that are doing it. --Dan Quayle


From brenNOSPAMbarn at NObrenSPAMbarn.net  Sun Oct 28 03:24:36 2007
From: brenNOSPAMbarn at NObrenSPAMbarn.net (OKB (not okblacke))
Date: Sun, 28 Oct 2007 07:24:36 GMT
Subject: Unicode raw string containing \u
References: <Xns99D6F3EC75B79OKB@199.45.49.11>
	<13i8e4fovg17u1f@corp.supernews.com>
Message-ID: <Xns99D7427D9762OKB@199.45.49.11>

Steven D'Aprano wrote:

>>          How can I specify a unicode raw string literal that
>>          contains a 
>>     single backslash followed by the word "universe"? 
> 
> The usual way.
> 
>>>> word = u'\\universe' len(word) 9 word[0] u'\\' word[1] u'u'
>>>> print word \universe word u'\\universe' 

    	That doesn't answer my question, since I asked for a unicode RAW 
string literal.  Is this not possible?  (I was able to get what I want 
using ur"\u005Cuniverse", although this is not totally ideal.)

-- 
--OKB (not okblacke)
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is
no path, and leave a trail."
	--author unknown


From lmierzej at o2.pl  Sun Oct 14 15:45:07 2007
From: lmierzej at o2.pl (Lukasz Mierzejewski)
Date: Sun, 14 Oct 2007 19:45:07 +0000 (UTC)
Subject: pydev code completion problem
Message-ID: <fetrk3$l27$3@nemesis.news.tpi.pl>

Hi, I need help with pydev code completion...

Let's assume that we have something like this:

class One:
	def fun(self):
	return 1

class Two:
	li = []
	li.append(One())

	one = li[0]
	print one.fun()

	one2 = li.pop()
	print one2.fun()

	one3 = One()	
	print one3.fun()

Only for 'one3' variable code completion is working fine (as expected it
show fun()).
For 'one' code completion shows something (but not fun()).
For 'one2' code completion shows nothing :-(

I use Eclipse 3.3.1 with PyDev 1.3.9 on Ubuntu 7.04.

Can anyone confirm or deny this behavior of PyDev?


From jusa.sj at gmail.com  Sun Oct 14 03:23:42 2007
From: jusa.sj at gmail.com (Juha S.)
Date: Sun, 14 Oct 2007 10:23:42 +0300
Subject: Foreign Character Problems In Python 2.5 and Tkinter
In-Reply-To: <1192300347.953402.172130@k35g2000prh.googlegroups.com>
References: <mailman.160.1192262504.927.python-list@python.org>	<pan.2007.10.13.12.25.41.721728@luukku.com>	<mailman.168.1192281215.927.python-list@python.org>	<pan.2007.10.13.13.43.54.219741@luukku.com>	<mailman.170.1192288943.927.python-list@python.org>
	<1192300347.953402.172130@k35g2000prh.googlegroups.com>
Message-ID: <4711C3FE.8080803@gmail.com>

nickel_and_dime_2death at yahoo.com wrote:
> As a noob I've struggled a bit, but basically what I've come up with
> is => if the information is strings and especially strings stored in
> any style of list/dict, it takes a loop to write the lines to file
> myfile[ i ] + '\n' to keep each line for Python I/O purposes. If
> you're done with Python manipulation and want WIN, MAC, or UNIX to
> begin file I/O, then, you need the consideration of <newline-char>
> from the os module, or code it in yourself, e.g. '\r\n'. The fact you
> are using codec iso-latin-1 (or iso-8859-1) doesn't change the '\n'
> from Python's viewpoint -- that is: '\n' is still '\n'. When your
> efforts are I/O with binary encoding the data, it's all Python's
> viewpoint.
>
>   

Ah, it was so simple. I replaced any '\n' characters with 'os.linesep' 
in the source as you suggested, and now everything works beautifully. 
Thanks for the help, guys!


From fanglicheng at gmail.com  Wed Oct 10 10:48:17 2007
From: fanglicheng at gmail.com (Licheng Fang)
Date: Wed, 10 Oct 2007 14:48:17 -0000
Subject: Problem of Readability of Python
In-Reply-To: <1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
Message-ID: <1192027697.413492.90430@g4g2000hsf.googlegroups.com>

On Oct 8, 4:24 am, al... at mac.com (Alex Martelli) wrote:
> Licheng Fang <fanglich... at gmail.com> wrote:
>
>    ...
>
> > Python Tutorial says an empty class can be used to do this. But if
> > namespaces are implemented as dicts, wouldn't it incur much overhead
> > if one defines empty classes as such for some very frequently used
> > data structures of the program?
>
> Just measure:
>
> $ python -mtimeit -s'class A(object):pass' -s'a=A()' 'a.zop=23'
> 1000000 loops, best of 3: 0.241 usec per loop
>
> $ python -mtimeit -s'a=[None]' 'a[0]=23'
> 10000000 loops, best of 3: 0.156 usec per loop
>
> So, the difference, on my 18-months-old laptop, is about 85 nanoseconds
> per write-access; if you have a million such accesses in a typical run
> of your program, it will slow the program down by about 85 milliseconds.
> Is that "much overhead"?  If your program does nothing else except those
> accesses, maybe, but then why are your writing that program AT ALL?-)
>
> And yes, you CAN save about 1/3 of those 85 nanoseconds by having
> '__slots__=["zop"]' in your class A(object)... but that's the kind of
> thing one normally does only to tiny parts of one's program that have
> been identified by profiling as dramatic bottlenecks, to shave off the
> last few nanoseconds in the very last stages of micro-optimization of a
> program that's ALMOST, but not QUITE, fast enough... knowing about such
> "extreme last-ditch optimization tricks" is of very doubtful value (and
> I think I'm qualified to say that, since I _do_ know many of them...:-).
> There ARE important performance things to know about Python, but those
> worth a few nanoseconds don't matter much.
>
> Alex

This is enlightening. Surely I shouldn't have worried too much about
performance before doing some measurement.



From jeffober at gmail.com  Tue Oct 30 08:53:09 2007
From: jeffober at gmail.com (Jeff)
Date: Tue, 30 Oct 2007 12:53:09 -0000
Subject: Proxying downloads
In-Reply-To: <mailman.643.1193748125.13605.python-list@python.org>
References: <mailman.643.1193748125.13605.python-list@python.org>
Message-ID: <1193748789.274409.12900@o80g2000hse.googlegroups.com>

You use a temp directory to store the file while downloading, then
move it to the cache so the addition of the complete file is atomic.
The file name of the temp file should be checked to validate that you
don't overwrite another process' download.

Currently downloading urls should be registered with the server
process (a simple list or set would work).  New requests should be
checked against that; if there is a matching url in there, the process
must wait until that download is finished and that file should be
delivered to both Alice and Bob.

You need to store the local file path and the url it was downloaded
from and checking against that when a request is made; there might be
two foobar.iso files on the Internet or the network, and they may be
different (such as in differently versioned directories).



From martin at marcher.name  Wed Oct 24 16:23:55 2007
From: martin at marcher.name (Martin Marcher)
Date: Wed, 24 Oct 2007 22:23:55 +0200
Subject: crontab library
In-Reply-To: <ac2200130710241237k4ecf4a77jeef2c6fc16f0fb06@mail.gmail.com>
References: <5fa6c12e0710241212v7c675a1dp9c87d3c9f98df261@mail.gmail.com>
	<ac2200130710241237k4ecf4a77jeef2c6fc16f0fb06@mail.gmail.com>
Message-ID: <5fa6c12e0710241323n7a7773e4k203bcf3ad14d07cb@mail.gmail.com>

2007/10/24, Guilherme Polo <ggpolo at gmail.com>:
> 2007/10/24, Martin Marcher <martin at marcher.name>:
> > I had a look at the crontab docs and never realized how complex it
> > actually is. So before I spend time in creating such a thing maybe
> > someone did it already :)
> >
>
> When you say complex, are you talking about the possible ways to
> define when your job runs ? You could use a parser for the time format
> it uses, like this:
> http://umit.svn.sourceforge.net/viewvc/umit/branch/ggpolo/umitCore/CronParser.py?revision=1175&view=markup

This looks nice for starters. But the crontab(5) manpage has a lot
more - that's what I meant by complex. I guess it's just quite some
typing work :)

 * lists
  * 1,2,4
 * ranges
  * 1-3
 * steps
  * 1-12/2
  * "*/3"
 * specials
  * @annually
  * @weekly
  * @daily
  * ...
 * mixes there of
  * 1-4,6,16-22/3
    (this actually depends on which cron you use, the
    lowest common denominator would be to use either lists or ranges
    (or ranges with steps))

Then there is the difference of roots crontab where whe have a line
like this:

# minute hour dom month dow user command
0 * * * * nobody echo foo

A users crontab
# minute hour dom month dow command
0 * * * * echo foo

and all the variables one could use. with a few of them being
mandatory (LOGNAME, or USER depending on the OS), some of them being
standard variables (SHELL,
PATH) and of course custom variables.


-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From mlongjr at verizon.net  Wed Oct 24 21:56:38 2007
From: mlongjr at verizon.net (Junior)
Date: Thu, 25 Oct 2007 01:56:38 GMT
Subject: delineating by comma where commas inside quotation marks don't count
Message-ID: <qJSTi.14839$na2.5524@trndny08>

I want to open a text file for reading and delineate it by comma.  I also 
want any data
surrounded by quotation marks that has a comma in it, not to count the 
commas inside the
quotation marks

if the file testfile.txt contains the following;

5,Tuesday,"May is a spring month",Father's Day
1,Saturday,"June,July and August",Independance Day


and I write the following program

fname = open('testfile.txt', 'r')
ct=1
while ct != 3:
    rd=(fname.readline())
    filedata=rd.split(',')
    print "var2=",filedata[2]
    ct +=1

fname.close

filedata[2] will = "May is a spring month"; on the first pass and

filedata[2] will = "June;  on the second pass

How do I get filedata[2] to = "June,July and August" on the second pass

and filedata[3] to = Independance Day




From lasses_weil at klapptsowieso.net  Wed Oct  3 12:23:06 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Wed, 03 Oct 2007 18:23:06 +0200
Subject: generating range of numbers
In-Reply-To: <1191403125.540152.72320@22g2000hsm.googlegroups.com>
References: <1191403125.540152.72320@22g2000hsm.googlegroups.com>
Message-ID: <4703c1ea$0$30380$9b4e6d93@newsspool4.arcor-online.net>

vimal wrote:
> hi all,
> 
>      i am new to python.....
>      i just want to generate numbers in the form like:
> 
>     1,2,4,8,16,32.....to a maximum of 1024
> 
>     using a range function
> 
Homework?

/W


From wojciech at gmail.com  Thu Oct  4 11:29:01 2007
From: wojciech at gmail.com (Wojciech Gryc)
Date: Thu, 04 Oct 2007 15:29:01 -0000
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <1191511635.118779.124240@22g2000hsm.googlegroups.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
	<1191511635.118779.124240@22g2000hsm.googlegroups.com>
Message-ID: <1191511741.151025.172190@y42g2000hsy.googlegroups.com>

Thank you Carl and thank you Jarek. This makes me feel much better --
on to coding, I shall go. :)

Thanks again,
Wojciech

On Oct 4, 11:27 am, Carl Banks <pavlovevide... at gmail.com> wrote:
> On Oct 4, 11:11 am, Wojciech Gryc <wojci... at gmail.com> wrote:
>
> > Hi,
>
> > I recently started using Python and am extremely happy with how
> > productive it's made me, even as a new user. I'm hoping to continue
> > using the language for my research, and have come across a bit of a
> > stumbling block.
>
> > I'm a seasoned Java programmer and quite a big fan of interfaces...
> > i.e. The idea that if I make a number of distinct classes that
> > implement interface X, I can pass them all as parameters to functions
> > or whatnot that require an X object.
>
> > Is there something similar in Python?
>
> Yes: you do it pretty much the same way you'd do it in Java, except
> for two differences:
> * leave out the "implements Interface" part
> * don't actually create an Interface class
>
> And then, voila!, you can write functions that can accept any class
> that implements your interface.
>
> > What I'd like to do is create a feature detection system for my work
> > -- specifically, a general class / interface called "Feature" and then
> > subclasses that implement functions like isFeaturePresent() in all of
> > their different and unique ways. I'd love to hear how I can do this in
> > Python.
>
> Just define isFeaturePresent() in any class you want.  That's all you
> have to do; any class that defines this method can be passed to any
> function that invokes it, without having to "implement" or "subclass"
> anything.
>
> This is known as "duck typing" in Python lingo.
>
> Carl Banks




From byte8bits at gmail.com  Tue Oct 30 08:56:02 2007
From: byte8bits at gmail.com (brad)
Date: Tue, 30 Oct 2007 08:56:02 -0400
Subject: A Python 3000 Question
In-Reply-To: <mailman.639.1193742687.13605.python-list@python.org>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
Message-ID: <fg79ld$n46$1@solaris.cc.vt.edu>

Eduardo O. Padoan wrote:

> This is a FAQ:
> http://effbot.org/pyfaq/why-does-python-use-methods-for-some-functionality-e-g-list-index-but-functions-for-other-e-g-len-list.htm

Thanks to all for the feedback. I'm no language designer. I just see and 
hear these criticisms and I wanted to think through it a bit by posting 
here. I now better understand generic functions and why they are used in 
some cases.


From tommy.nordgren at comhem.se  Mon Oct 29 16:19:50 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Mon, 29 Oct 2007 21:19:50 +0100
Subject: setting variables in outer functions
Message-ID: <4B003AF0-D445-48A3-BE5D-08382B1B4018@comhem.se>

Given the following:
def outer(arg)
      avar = ''
      def inner1(arg2)
           # How can I set 'avar' here ?

-------------------------------------
This sig is dedicated to the advancement of Nuclear Power
Tommy Nordgren
tommy.nordgren at comhem.se





From gagsl-py2 at yahoo.com.ar  Sun Oct  7 00:08:49 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 07 Oct 2007 01:08:49 -0300
Subject: embedding python..
References: <1191627640.676114.319430@22g2000hsm.googlegroups.com>
Message-ID: <op.tzs64zl7x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Fri, 05 Oct 2007 20:40:40 -0300, Eric_Dexter at msn.com  
<Eric_Dexter at msn.com> escribi?:

>      I compiled the c program that is supposed to allow you to call a
> procedure from the command line promt..  (it is from the embeding
> example)..  I am a little confused as to what all I am supposed to
> distribute to make it work..  Do I just need the python .dll for the
> version I compiled or is it working with the installed version of
> python.. (I don't want to start deleting stuff to find out)..  Any
> help on this question would be apreaceated..

If you only provide pythonXX.dll (and probably msvcr71.dll), any Python  
code that tries to import any module apart from builtin modules will fail.  
If you provide the Python standard library in full, almost any program  
could be run.
It's up to you to decide how much you require/allow/want to provide.

-- 
Gabriel Genellina



From http  Mon Oct 29 10:54:12 2007
From: http (Paul Rubin)
Date: 29 Oct 2007 07:54:12 -0700
Subject: Handle Exceptions Inside List Comprehension
References: <1193669272.221535.281940@d55g2000hsg.googlegroups.com>
Message-ID: <7xfxzuynsb.fsf@ruckus.brouhaha.com>

beginner <zyzhu2000 at gmail.com> writes:
> [f(x) for x in xs]
> 
> I want to skip the point if f(x) raises an exception. How can I do
> that without totally removing the list comprehension?

def ff(xs):
  for x in xs:
     try: yield f(x)
     except: pass

[x for x in ff(xs)]   or alternatively

list(ff(xs))


From paulgeeleher at gmail.com  Sun Oct 21 12:50:54 2007
From: paulgeeleher at gmail.com (sophie_newbie)
Date: Sun, 21 Oct 2007 09:50:54 -0700
Subject: Error when python script run as cgi script
Message-ID: <1192985454.957211.219450@z24g2000prh.googlegroups.com>

Hi, I'm running a python script which if I run from the command line
as root runs fine. But if I run it through the web-browser as a cgi
script gives the following error "Error in X11: unable to start device
PNG".

Now I should say that this python script is calling fucntions in R (a
scripting languange used in statistics) using the python module RPy,
so this I dunno if this is entirely a Python question, because as far
as I can see the error is being thrown by R. But then as I say, when
the script is run by the root user from the command line everything
goes off without a hitch.

So I dunno is there some way to run a CGI script as root, maybe thats
a bad idea because of security? But any ideas would be welcome.

-Thanks.



From marco at sferacarta.com  Mon Oct 22 11:31:04 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Mon, 22 Oct 2007 17:31:04 +0200
Subject: Iteration for Factorials
In-Reply-To: <1193064348.526006.183080@q5g2000prf.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
Message-ID: <Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>

 From the cookbook, this time.
It satisfies the requirements nicely  ;)


http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691



def tail_recursion(g):
     '''
     Version of tail_recursion decorator using no stack-frame 
inspection.
     '''
     loc_vars ={"in_loop":False,"cnt":0}

     def result(*args, **kwd):
         loc_vars["cnt"]+=1
         if not loc_vars["in_loop"]:
             loc_vars["in_loop"] = True
             while 1:
                 tc = g(*args,**kwd)
                 try:
                     qual, args, kwd = tc
                     if qual == 'continue':
                         continue
                 except (TypeError, ValueError):
                     loc_vars["in_loop"] = False
                     return tc
         else:
             if loc_vars["cnt"]%2==0:
                 return ('continue',args, kwd)
             else:
                 return g(*args,**kwd)
     return result


@tail_recursion
def factorial(n, acc=1):
     "calculate a factorial"
     if n == 0:
        return acc
     res = factorial(n-1, n*acc)
     return res



From steven.bethard at gmail.com  Mon Oct  8 14:22:29 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 08 Oct 2007 12:22:29 -0600
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
In-Reply-To: <fecbjj$5rn$1@panix3.panix.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com>
Message-ID: <ocudnf2qE6P46JfanZ2dnUVZ_h-vnZ2d@comcast.com>

Aahz wrote:
> In article <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d at comcast.com>,
> Steven Bethard  <steven.bethard at gmail.com> wrote:
>> You can use __slots__  [...]
> 
> Aaaugh!  Don't use __slots__!
> 
> Seriously, __slots__ are for wizards writing applications with huuuge
> numbers of object instances (like, millions of instances).

You clipped me saying that __slots__ are for performance tweaks:

     You can use __slots__ to make objects consume less memory and have
     slightly better attribute-access performance. Classes for objects
     that need such performance tweaks should start like...

I fully agree that __slots__ are for applications with huge numbers of 
instances. But if you have that situation, you really do want to be 
using __slots__.

STeVe


From deets at nospam.web.de  Tue Oct  2 04:48:36 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 02 Oct 2007 10:48:36 +0200
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <5meev4Fcr2anU1@mid.uni-berlin.de>

> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?

There is no secret weapon. It's a question about dependencies, maintenance,
stability and supported platforms.

Using one of the other Toolkits would mean that an awful lot of libraries
need to be included as well - even nowadays, people complain about the size
of a python distribution. 

Then something in the core libraries has to be actively & reliably
maintained to not endanger the overall release cycles.

Linked to that is the question of stability - not so much as "it doesn't
crash" but more on the lines of "it doesn't move so fast people cry for
newer versions all the time"

And last but not least is Tk available on a wide range of platforms, larger
than more or less every other toolkit. I know of a popular source control
software which vendor chose Tk for the same reason.

Diez


From JKPeck at gmail.com  Wed Oct 24 19:59:32 2007
From: JKPeck at gmail.com (JKPeck)
Date: Wed, 24 Oct 2007 23:59:32 -0000
Subject: Wrapping stdout in a codec
In-Reply-To: <5o2tp4FktnthU1@mid.uni-berlin.de>
References: <1193020877.138550.53890@z24g2000prh.googlegroups.com>
	<5o2tp4FktnthU1@mid.uni-berlin.de>
Message-ID: <1193270372.916624.310800@y27g2000pre.googlegroups.com>

On Oct 22, 12:20 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Mon, 22 Oct 2007 02:41:17 +0000, JKPeck wrote:
> > We want to wrap the stdout device in a codec in order to decode output
> > transparently according to a particular code page (which might not be
> > the system code page).  However, codec.open requires a filename, and
> > stdout may be a tty or otherwise anonymous.  How can we accomplish
> > this wrapping?
>
> The `codecs` module has more than just the `codecs.open()` function.  Try
> something like this::
>
>   sys.stdout = codecs.getwriter('utf-8')(sys.stdout)
>
> Ciao,
>         Marc 'BlackJack' Rintsch

Thanks, codecs.getwriter is just the ticket.  Our app may not be
running in the system encoding, so the file system encoding is not
appropriate.



From kyosohma at gmail.com  Wed Oct 24 11:13:25 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 24 Oct 2007 15:13:25 -0000
Subject: win32com.client documentation?
In-Reply-To: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
References: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
Message-ID: <1193238805.436906.253370@e9g2000prf.googlegroups.com>

On Oct 24, 9:35 am, Mark Morss <mfmo... at aep.com> wrote:
> I am a unix person, not new to Python, but new to Python programming
> on windows.  Does anyone know where to find documentation on
> win32com.client?  I have successfully installed this module and
> implemented some example code.  But a comprehensive explanation of the
> objects and methods available is nowhere to be found.  I have been
> able to find a somewhat out-of-date O'Reilly book, nothing more.
>
> I want to be able to script the creation of Excel spreadsheets and
> Word documents, interract with Access data bases, and so forth.

Actually, the out-of-date book is still very relevant for most
applications. Chun's book, Core Python Programming also has a section
on using Python to manipulate Office documents.

The docs for PyWin32 currently reside here:

http://aspn.activestate.com/ASPN/docs/ActivePython/2.4/pywin32/win32_modules.html

The com documents specifically can be found here:

http://aspn.activestate.com/ASPN/docs/ActivePython/2.4/pywin32/com.html

As Tim Golden has mentioned before, Pywin32 is bound so closely to the
win32 calls that you can basically just look on MSDN and use the
syntax there in Python, for the most part.

Mike



From rzzzwilson at gmail.com  Sun Oct 28 01:03:42 2007
From: rzzzwilson at gmail.com (rzzzwilson)
Date: Sat, 27 Oct 2007 22:03:42 -0700
Subject: elementtree w/utf8
In-Reply-To: <ffr11p$unf$1@foggy.unx.sas.com>
References: <ffr11p$unf$1@foggy.unx.sas.com>
Message-ID: <1193547822.283497.115800@i13g2000prf.googlegroups.com>


Tim Arnold wrote:
<snip>
> On a related note, I have another question--where/how can I get the
> cElementTree.py module? Sorry for something so basic, but I tried installing
> cElementTree, but while I could compile with setup.py build, I didn't end up
> with a cElementTree.py file anywhere. The directory structure on my system
> (HPux, but no root access) doesn't work well with setup.py install.
>
> thanks,
> --Tim Arnold

I had the same question a while ago .... and the answer is ElementTree
is now
part of the standard library.

http://docs.python.org/lib/module-xml.etree.ElementTree.html

Ross



From martin at marcher.name  Wed Oct 24 17:36:58 2007
From: martin at marcher.name (Martin Marcher)
Date: Wed, 24 Oct 2007 23:36:58 +0200
Subject: Test for a unicode string
In-Reply-To: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
References: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
Message-ID: <5fa6c12e0710241436y37389819p82d2c1b78e250cff@mail.gmail.com>

2007/10/24, goldtech <goldtech at worldpost.com>:
> Question: Is there a way to test a string for unicode chars (ie. test
> if a string will throw the error cited above).

yes there ist :)

>>> isinstance(u"a", basestring)
True
>>> isinstance(u"a", unicode)
True
>>> isinstance("a", unicode)
False
>>> isinstance("a", str)
True
>>> isinstance(u"a", str)
False


-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From george.sakkis at gmail.com  Tue Oct 30 09:21:20 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 30 Oct 2007 13:21:20 -0000
Subject: Readline and record separator
In-Reply-To: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
Message-ID: <1193750480.643207.144590@57g2000hsv.googlegroups.com>

On Oct 30, 8:21 am, Johny <pyt... at hope.cz> wrote:
> Is it possible to change record separator when using readline?
> As far as I know readline reads characters until found '\n' and it is
> the end of record for readline.
> My problem is that my record consits several '\n' and when I use
> readline it does NOT read the whole my record.
> So If I could change '\n' as  a record separator for readline, it
> would solve my problem.
> Any idea?
> Thank you
> L.

Check out this recipe, it's pretty generic:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/521877.

George



From rcdailey at gmail.com  Wed Oct 10 16:29:06 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 15:29:06 -0500
Subject: for loop question
In-Reply-To: <496954360710101328q4ec95c8pdc9f0b271d2b83e6@mail.gmail.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<1192047136.3388.19.camel@dot.uniqsys.com>
	<496954360710101327s7ee23520u9bb4d74833110071@mail.gmail.com>
	<496954360710101328q4ec95c8pdc9f0b271d2b83e6@mail.gmail.com>
Message-ID: <496954360710101329q1a39d65bs19ce22425f819048@mail.gmail.com>

All the ideas presented here are workable. I definitely have a lot of
solutions to choose from. Thanks everyone for your help. I wasn't sure if
there was some sort of language feature to naturally do this, so I had to
post on the mailing list to make sure.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/c22eb2f8/attachment.html>

From Frank.Aune at broadpark.no  Thu Oct 18 18:46:54 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Fri, 19 Oct 2007 00:46:54 +0200
Subject: python logging module and custom handler specified in config file
In-Reply-To: <1192728419.133020.133590@q5g2000prf.googlegroups.com>
References: <mailman.21.1192458649.13605.python-list@python.org>
	<1192728419.133020.133590@q5g2000prf.googlegroups.com>
Message-ID: <200710190046.54903.Frank.Aune@broadpark.no>

On Thursday 18 October 2007 19:26:59 Vinay Sajip wrote:
> The same technique applies to the arguments passed to the constructor.
>
> Hope this helps,
>

Thank you! This seems like exactly what I was looking for. 

Very impressive logging framework btw - I use it whenever I can =)

Cheers,
Frank


From allen.fowler at yahoo.com  Wed Oct 17 18:59:18 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: Wed, 17 Oct 2007 15:59:18 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192639690.306271.298190@z24g2000prh.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
	<1192639690.306271.298190@z24g2000prh.googlegroups.com>
Message-ID: <1192661958.052525.163760@e34g2000pro.googlegroups.com>


>
> One CGI question - since all of my CGIs are spitting out HTML is their
> source code safe? wget and linking to the source deliver the output
> HTML. Are there any other methods of trying to steal the source CGI I
> need to protect against?
>
> Thank you.

Not sure I fully understand the question.

Can you post the CGI code here?



From aaron.watters at gmail.com  Tue Oct  9 07:26:18 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Tue, 09 Oct 2007 04:26:18 -0700
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <mailman.7.1191917068.916.python-list@python.org>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
Message-ID: <1191929178.103375.308840@50g2000hsm.googlegroups.com>

On Oct 8, 7:00 pm, "Delaney, Timothy (Tim)" <tdela... at avaya.com>
wrote:
> aaron.watt... at gmail.com wrote:
> > ANNOUNCE:
> >   NUCULAR fielded text searchable indexing
>
> Does "NUCULAR" stand for anything? The (apparent) misspelling of
> "nuclear" has already turned me off wanting to find out more about it.
>
> Tim Delaney

No, it doesn't stand for anything.  I guess it's not for you :(.
Sorry about that.

(see the graphic at the bottom of http://nucular.sourceforge.net)

  -- Aaron Watters

===
An apple every 8 hours will keep 3 doctors away. (kliban)



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct  8 08:38:52 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 12:38:52 -0000
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com>
Message-ID: <13gk96sks58ad9f@corp.supernews.com>

On Sun, 07 Oct 2007 21:27:31 -0700, Aahz wrote:

> In article <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d at comcast.com>, Steven
> Bethard  <steven.bethard at gmail.com> wrote:
>>
>>You can use __slots__  [...]
> 
> Aaaugh!  Don't use __slots__!
> 
> Seriously, __slots__ are for wizards writing applications with huuuge
> numbers of object instances (like, millions of instances).  For an
> extended thread about this, see
> 
> http://groups.google.com/group/comp.lang.python/browse_thread/
thread/8775c70565fb4a65/0e25f368e23ab058

Well, I've read the thread, and I've read the thread it links to, and for 
the life of me I'm still no clearer as to why __slots__ shouldn't be used 
except that:

1 Aahz and Guido say __slots__ are teh suxxor;

2 rumour (?) has it that __slots__ won't make it into Python 3.0;

3 inheritance from classes using __slots__ doesn't inherit the slot-
nature of the superclass.


Point 1 is never to be lightly dismissed, but on the other hand Guido 
doesn't like reduce(), and I'm allergic to "Cos I Said So" arguments.

History is full of things which were invented for one purpose being used 
for something else. So, that being the case, suppose I accept that using 
__slots__ is not the best way of solving the problem, and that people of 
the skill and experience of Guido and Aahz will roll their eyes and 
snicker at me.

But is there actually anything *harmful* that can happen if I use 
__slots__?



-- 
Steven.


From horpner at yahoo.com  Tue Oct 16 08:44:36 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Tue, 16 Oct 2007 12:44:36 GMT
Subject: Newbi Q: What is a rational for strings not being lists in Python?
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
	<mailman.35.1192478621.13605.python-list@python.org>
	<1192502360.503727.299990@e34g2000pro.googlegroups.com>
	<mailman.59.1192537926.13605.python-list@python.org>
Message-ID: <Um2Ri.39128$G23.33568@newsreading01.news.tds.net>

On 2007-10-16, Simon Brunning <simon at brunningonline.net> wrote:
> On 10/16/07, Benjamin <musiccomposition at gmail.com> wrote:
>
>> Good explanation, but basically strings are immutable so they can be
>> used in dicts.
>
> Nope. Value types should always be immutable.
>
><http://c2.com/cgi/wiki?ValueObjectsShouldBeImmutable>

And strings are considered value objects because...

-- 
Neil Cerutti


From besturk at gmail.com  Thu Oct 18 13:01:12 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 10:01:12 -0700
Subject: Convert string to command..
In-Reply-To: <87przc1im7.fsf@mulj.homelinux.net>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
	<1192724835.765738.141790@q5g2000prf.googlegroups.com>
	<87przc1im7.fsf@mulj.homelinux.net>
Message-ID: <1192726872.921589.249670@i38g2000prf.googlegroups.com>

On Oct 18, 7:40 pm, Hrvoje Niksic <hnik... at xemacs.org> wrote:
> Abandoned <best... at gmail.com> writes:
> > Sorry i can't understand :(
> > Yes my database already has data in the "{..}" format and i select
> > this and i want to use it for dictionary..
>
> But, do you use Python to create that data?  If so, simply convert it
> to pickle binary format instead of "{...}".  As explained in my other
> post:
>
> > id-1 | all
> > 56    {68:66, 98:32455, 62:655}
>
> If you use Python to create this cache table, then simply don't dump
> it as a dictionary, but as a pickle:
>
> id-1 | all
> 56     <some weird string produced by cPickle.dumps>
>
> When you load it, convert the string to dict with cPickle.loads
> instead of with eval.

Yes i understand and this very very good ;)
But i have a problem..
a=eval(a)
a=pickle.dumps(a, -1)
cursor.execute("INSERT INTO cache2 VALUES ('%s')" % (a))
conn.commit()

and give me error:

psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
0x80
HINT:  This error can also happen if the byte sequence does not match
the encoding expected by the server, which is controlled by
"client_encoding".





From grante at visi.com  Fri Oct 19 10:43:07 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 19 Oct 2007 14:43:07 -0000
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192659838.773066.160060@i38g2000prf.googlegroups.com>
	<1192663840.916445.207420@k35g2000prh.googlegroups.com>
	<1192729918.586875.187520@e34g2000pro.googlegroups.com>
	<mailman.207.1192795063.13605.python-list@python.org>
Message-ID: <13hhgjrtn3j9pb7@corp.supernews.com>

On 2007-10-19, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
> "Arnaud Delobelle" <arno....email.com> wrote:
>
>> In binary 2 is 10.  When you multiply by 10, you shift all your digits
>> left by 1 place.
>> When you multiply by 10**n (which is 1 followed by n zeroes), you
>> shift all your digits left by n places.
>
> I read somewhere:
>
> Only 1 person in 1000 understands binary.
> The other 111 don't have a clue.

There are only 10 kinds of people: those who understand binary
and those who don't.

-- 
Grant Edwards                   grante             Yow! Will this never-ending
                                  at               series of PLEASURABLE
                               visi.com            EVENTS never cease?


From brunovianarezende at gmail.com  Sat Oct  6 08:02:57 2007
From: brunovianarezende at gmail.com (Bruno Rezende)
Date: Sat, 06 Oct 2007 05:02:57 -0700
Subject: my Python lib is broken
Message-ID: <1191672177.389263.185790@g4g2000hsf.googlegroups.com>

Hi,

I think I've broken my python installation (don't know how). All the
packages that are under 'lib' in python installation doesn't work the
way expected:

>>> import xml
>>> xml.dom
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'dom'

but, if I import * from xml, it starts to work again:

>>> from xml import *
>>> xml.dom
<module 'xml.dom' from 'C:\Python25\Lib\xml\dom\__init__.pyc'>


Does someone know why is this happening? (I can reinstall my python
2.5, but would like to know how the python lib got broken).

regards,
Bruno



From cyberco at gmail.com  Sun Oct 14 16:36:07 2007
From: cyberco at gmail.com (cyberco)
Date: Sun, 14 Oct 2007 20:36:07 -0000
Subject: pydev code completion problem
In-Reply-To: <fetrk3$l27$3@nemesis.news.tpi.pl>
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
Message-ID: <1192394167.058669.117830@q5g2000prf.googlegroups.com>

Confirmed (with exactly the same software).

Please discuss this issue at the PyDev discussion forum:
http://sourceforge.net/forum/forum.php?forum_id=293649

2B



From nick at craig-wood.com  Mon Oct  8 10:30:13 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 08 Oct 2007 09:30:13 -0500
Subject: changes on disk not visible to script ?
References: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
Message-ID: <slrnfgke1b.841.nick@irishsea.home.craig-wood.com>

Bruce <epost2 at gmail.com> wrote:
>  I am trying to have my script automate a task, by using os.system, but
>  I cant get it to work.
> 
>  manually, outside the script I can do this thing by
> 
>  C:\echo argument_file | the_program
> 
>  This works very well when argument_file is created before my script is
>  started
> 
>  In the script I try to do it like this:
>  f = open("argument_file",'w')
>  f.write(argument)
>  f.close()
>  cmd = "echo %s | %s"%(argument_file,the_program)
>  os.system(cmd)
> 
>  The script works if the argument_file is already in the directory
>  before os.system(cmd), but the script must create argument_file before
>  using os.system. Problem is the_program cannot find argument_file or
>  the_program cannot find anything inside argument_file.

Send some real code, plus a sequence of steps to be followed to
replicate the problem and you'll get some real help.  The above is
just too vague.

The above code has a syntax error in it so obviously isn't from
working code.

PS I really doubt the problem is windows not seeing the created file...

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From truthismidway at aim.com  Fri Oct 19 11:34:53 2007
From: truthismidway at aim.com (Sushant)
Date: Fri, 19 Oct 2007 11:34:53 -0400
Subject: dynamic invoke
In-Reply-To: <5nrvdoFjmq4tU1@mid.uni-berlin.de>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<mailman.213.1192804759.13605.python-list@python.org>
	<5nrvdoFjmq4tU1@mid.uni-berlin.de>
Message-ID: <200710191134.53856.truthismidway@aim.com>

I did not know about getattr and it is the right thing. 

getattr seems to be converting string into function pointer and I am just 
saying that string cannot be used as a function pointer in Python as may be 
in PHP.

I copied the PHP code so I did not replace arrow with  dot. Good point :)

-Sushant.

On Friday 19 October 2007 11:05 am, Diez B. Roggisch wrote:
> Sushant wrote:
> > Python will not allow string to be used a function pointer. It is type
> > unsafe. Best way is to convert string into function pointers manually.
> >
> > if dynamicMethod == 'bar':
> >     method = oFoo->bar
> > else:
> >     method = oFoo->default
> > method()
>
> Sorry to say so, but that answer is bogus. It's not even Python!
>
> Jarek has already shown how to solve this problem. And type-safety-issues
> have nothing to do with it at all.
>
> Diez


From steve at holdenweb.com  Tue Oct  2 18:31:20 2007
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 02 Oct 2007 18:31:20 -0400
Subject: module confusion
In-Reply-To: <fdsopm$kd6$4@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
Message-ID: <fdugrl$kj0$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
> Kern wrote:
> 
>> Not all of the modules in a package are imported by importing the
>> top-level package.
> 
> You can't import packages, only modules.
> 
>> os.path is a particularly weird case because it is just an alias to the
>> platform-specific path-handling module; os is not a package.
> 
> os is a module, os.path is a variable within that module. That's all there
> is to it.

The Python  documentation could probably be a little more expansive on 
the import front, but it's an area where historically many different 
attempts have been made to fix up the problems, or create new and more 
usable layers [that suffer from different problems].

You *can* import a package, and a package is just a *little* different 
from a module in that the __init__.py file in the package directory 
provides the source for the first-import execution instead of the 
modulename.py file. The global namespace during this process is the 
package's global namespace, so if further imports are executed by the 
__init__ module the names of the imported objects are created in the 
package global namespace (along with the names of defined classes and 
functions, and other names bound by assignment) and can therefore be 
referenced relative to it. The package in which the package import was 
executed  will end up defined in the namespace in which the import 
statement was executed.

I will grant that you can't basically do anything in the __init__.py 
that you can't do in a module's modulename.py file. It is possible to 
define a hierarchy of namespaces concordant with the package's directory 
structure, but it doesn't matter whether package import creates the 
hierarchical namespace or assignment does. You can access module 
namespaces in a hierarchical way.

That's about all that can be said without delving into the murky land of 
relative vs. absolute imports. That can be for another day. And another 
writer, probably.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From kyosohma at gmail.com  Wed Oct 24 09:55:57 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 24 Oct 2007 13:55:57 -0000
Subject: Better writing in python
In-Reply-To: <1193230962.271873.104900@v29g2000prd.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193230962.271873.104900@v29g2000prd.googlegroups.com>
Message-ID: <1193234157.142175.11020@k35g2000prh.googlegroups.com>

On Oct 24, 8:02 am, kyoso... at gmail.com wrote:
> On Oct 24, 7:09 am, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
>
> > I'm just wondering, if I could write a in a "better" way this code
>
> > lMandatory = []
> > lOptional = []
> > for arg in cls.dArguments:
> >   if arg is True:
> >     lMandatory.append(arg)
> >   else:
> >     lOptional.append(arg)
> > return (lMandatory, lOptional)
>
> > I think there is a better way, but I can't see how...
>
> You might look into list comprehensions. You could probably do this
> with two of them:
>
> <code>
> # completely untested
> lMandatory = [arg for arg in cls.dArguments if arg is True]
> lOptional  = [arg for arg in cls.dArguments if arg is False]
> </code>
>
> Something like that. I'm not the best with list comprehensions, so I
> may have the syntax just slightly off. See the following links for
> more information:
>
> http://www.secnetix.de/olli/Python/list_comprehensions.hawkhttp://docs.python.org/tut/node7.html
>
> Mike

After reading the others replies, it makes me think that I'm barking
up the wrong tree. Ah well.

Mike



From beema.shafreen at gmail.com  Mon Oct 29 05:24:09 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Mon, 29 Oct 2007 14:54:09 +0530
Subject: sorting data
Message-ID: <aa405c1f0710290224gb307d45lf8aadf16055b1d0@mail.gmail.com>

hi all,
           I have problem to sort the data.. the file includes data as
follow.
file:
chrX:    123343123    123343182    A_16_P41787782
chrX:    123343417    123343476    A_16_P03762840
chrX:    123343460    123343519    A_16_P41787783
chrX:    12334336    12334395    A_16_P03655927
chrX:    123343756    123343815    A_16_P03762841
chrX:    123343807    123343866    A_16_P41787784
chrX:    123343966    123344024    A_16_P21578670
chrX:    123344059    123344118    A_16_P21578671
chrX:    12334438    12334497    A_16_P21384637
chrX:    123344776    123344828    A_16_P21578672
chrX:    123344811    123344870    A_16_P03762842
chrX:    123345165    123345224    A_16_P41787789
chrX:    123345360    123345419    A_16_P41787790
chrX:    123345380    123345439    A_16_P03762843
chrX:    123345481    123345540    A_16_P41787792
chrX:    123345873    123345928    A_16_P41787793
chrX:    123345891    123345950    A_16_P03762844


how do is sort the file based on the column 1 and 2 with values......
using sort option works for only one column and not for the other how do is
sort both 1 and 2nd column so that the third column does not change.....
my script:#sorting the file
start_lis = []
end_lis = []
fh = open('chromosome_location_346010.bed','r')
for line in fh.readlines():
        data = line.strip().split('\t')
        start = data[1].strip()
        end = data[2].strip()
        probe_id  = data[3].strip()
        start_lis.append(start)
       end_lis.append(end)
start_lis.sort()
end_lis.sort()
for k in start_lis:
     for i in end_lis
               print k , i , probe_id(this doesnot worK)
      result = start#end#probe_id ------->this doesnot work...
        print result

What is the error and how do is sort a file based on the two column  to get
the fourth column also with that.
regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/5f596ccd/attachment.html>

From rpw3 at rpw3.org  Fri Oct 12 23:11:00 2007
From: rpw3 at rpw3.org (Rob Warnock)
Date: Fri, 12 Oct 2007 22:11:00 -0500
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<85zlyrutux.fsf@lola.goethe.zz>
	<rqhrg3d2thcqaip790k1eb6t8cdk2g8d8v@4ax.com>
	<85lka8p2h4.fsf@lola.goethe.zz>
Message-ID: <UPOdnYQcG5HZqo3anZ2dnUVZ_rKtnZ2d@speakeasy.net>

David Kastrup  <dak at gnu.org> wrote:
+---------------
| George Neuner <gneuner2/@/comcast.net> writes:
| > Upward continuations can be stack implemented.  On many CPU's, using
| > the hardware stack (where possible) is faster than using heap
| > allocated structures.  For performance, some Scheme compilers go to
| > great lengths to identify upward continuations and nested functions
| > that can be stack implemented.
| 
| There is a Scheme implementation (I keep forgetting the name) which
| actually does both: it actually uses the call stack but never returns,
| and the garbage collection includes the stack.
+---------------

You're thinking of "Chicken Scheme":

    http://www.call-with-current-continuation.org/

Chicken Scheme is actually using the C call stack *as* the heap[1],
and thus all its continuations are *heap*-allocated, and thus
not actually "stack-allocated" at all.

But that's not what George Neuner is talking about, as I read it,
but rather probably about such things as Kent Dybvig's PhD thesis:

    http://www.cs.indiana.edu/~dyb/papers/3imp.pdf
    "Three Implementation Models for Scheme"
    R. Kent Dybvig, UNC Chapel Hill, 1987 (thesis) (190pp)
    ...
    Chapter 4: The Stack-Based Model
    ...
    Early Scheme implementors believed that because of the need to
    support first class functions, the standard techniques used for
    block-structured languages were not suitable for Scheme. The
    need to optimize tail calls and support continuations further
    convinced early implementors that the standard stack techniques
    were unsuitable. However, as this chapter will show, these
    techniques can be made to work for Scheme with a few modications.
    The resulting implementation model allows most function calls to
    be performed with little or no allocation, and allows variable
    references to be performed in one or two memory references.
    Heap allocation remains necessary to support closures, assigned
    variables, and continuations. Since function calls and variable
    references are faster and heap allocation is limited, the running
    time for most programs is greatly decreased.
    ...


-Rob

[1] As suggested in:

       http://home.pipeline.com/~hbaker1/CheneyMTA.html
       "CONS Should Not CONS Its Arguments, Part II: Cheney on the M.T.A"
       Henry G. Baker (1994)

-----
Rob Warnock			<rpw3 at rpw3.org>
627 26th Avenue			<URL:http://rpw3.org/>
San Mateo, CA 94403		(650)572-2607



From tjreedy at udel.edu  Wed Oct 24 00:08:32 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 24 Oct 2007 00:08:32 -0400
Subject: Speed of Nested Functions & Lambda Expressions
References: <1193154050.424718.298030@i13g2000prf.googlegroups.com>
	<471E1BFC.7080101@islandtraining.com>
Message-ID: <ffmgfv$ulo$1@ger.gmane.org>


"Gary Herron" <gherron at islandtraining.com> wrote in message 
news:471E1BFC.7080101 at islandtraining.com...
| beginner wrote:
| > Hi All,
| >
| > It is really convenient to use nested functions and lambda
| > expressions. What I'd like to know is if Python compiles fn_inner()
| > only once and change the binding of v every time fn_outer() is called
| > or if Python compile and generate a new function object every time. If
| > it is the latter, will there be a huge performance hit? Would someone
| > give some hint about how exactly Python does this internally?

Python the language does not 'do' anything.  The details could be 
implementation specific.

| > def fn_outer(v):
| >     a=v*2
| >     def fn_inner():
| >         print "V:%d,%d" % (v,a)
| >
| >     fn_inner()
| >
| > Thanks,
| > Geoffrey
| >
| >
| The code is compiled only once when the file is initially read in.
| During execution of fn_outer, v will be bound to a value, then a, then
| fn_inner will be bound (to an already compiled code object) and so on.

In CPython, I believe, fn_inner is bound to a *new* *function* object, not 
the once-compiled code object.  It has to be a new object because fn_outer 
could return the inner function, as is not uncommon.  And function objects 
are somewhat mutable.  And each returned function might have different 
values of enclosed outer variables.  However, each function object has the 
same .func_code member.

>>> def outer(n):
 def inner(m):
   return n+m
 return inner

>>> add3 = outer(3)
>>> add3(4)
7
>>> type(add3)
<type 'function'>

| Really, from the point of view of Python while executing fn_outer, the
| def of fn_inner looks just like an assignment with fn_inner as the
| variable name and a code object as the value.

Again, the value is a function object.

Terry Jan Reedy





From pavlovevidence at gmail.com  Wed Oct 31 11:11:04 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 31 Oct 2007 08:11:04 -0700
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <mailman.678.1193840121.13605.python-list@python.org>
References: <mailman.678.1193840121.13605.python-list@python.org>
Message-ID: <1193843464.345398.94430@k35g2000prh.googlegroups.com>

On Oct 31, 9:31 am, jelle <jelleferi... at gmail.com> wrote:
> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found,
> should't the .find method return 0 rather than -1?
> this breaks the
>
> if check.find('something'):
>     do(somethingElse)
>
> idiom, which is a bit of a pity I think.

string.find has always been kind of a wart in Python; that's why
they're getting rid of it.  For testing for the presence of a
substring, use the in operator:

if "something" in check:
    do(somethingElse)

When you need the position of a substring, using the index methods:

i = check.index("something")

index returns an exception of the substring is not there, so no need
to worry about what it returns.

Finally, it really won't kill you to do this:

if check.find("something") >= 0:
    do(somethingElse)


Carl Banks




From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 15:55:48 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 20:55:48 +0100
Subject: python in academics?
In-Reply-To: <1193749612.124199.172020@o38g2000hse.googlegroups.com>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
	<1193749612.124199.172020@o38g2000hse.googlegroups.com>
Message-ID: <47278c71$0$29610$426a74cc@news.free.fr>

kyosohma at gmail.com a ?crit :
> On Oct 29, 10:39 pm, sandipm <sandip.m... at gmail.com> wrote:
> 
>>seeing posts from students on group. I am curious to know, Do they
>>teach python in academic courses in universities?
>>
>>in undergrad comp science courses,  We had scheme language as scheme
>>is neat and beautiful language to learn programming. We learnt other
>>languages ourselve with basics set right by scheme..
>>
>>sandip
> 
> 
> They didn't at either of the colleges I went to. They seemed to be
> focused on C++, COBOL and Visual Basic. All are used all over the
> place, but only Visual Basic is easy for complete newbs.

And alas one of the worst languages for a beginner - because you'll 
probably need years to unlearn it.

> I hope more
> colleges adopt Python or Ruby as a teaching language, but I don't
> think it's a good idea to ignore COBOL or C++ since their used so
> extensively in big business.

being widely used doesn't imply being a good language for teaching CS 
(nor even being a good language for anything).


From grante at visi.com  Wed Oct  3 13:05:03 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 03 Oct 2007 17:05:03 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<1191370407.188678.86820@n39g2000hsh.googlegroups.com>
	<mailman.1463.1191425540.2658.python-list@python.org>
Message-ID: <13g7itvdl8m3870@corp.supernews.com>

On 2007-10-03, Chris Mellon <arkanes at gmail.com> wrote:
> On 10/2/07, bramble <cadet.bramble at gmail.com> wrote:
>> On Oct 2, 11:07 am, "Chris Mellon" <arka... at gmail.com> wrote:
>> >
>> > PyGtk has poor cross platform support, a very large footprint (the
>> > largest of all these libraries) as well as a complicated runtime
>> > environment.
>>
>> What's complicated about it?
>>
>
> There's an enormous amount of dependencies and runtime configuration,
> such as finding theme engines and handling preferences. There's
> solutions for managing all of that of course, but it's still much more
> overhead than dirt-simple Tk.

You've got to admit that Tk "just works", although as a result
it looks ugly and foreign on all platforms.

-- 
Grant Edwards                   grante             Yow! So this is what it
                                  at               feels like to be potato
                               visi.com            salad


From debajit1 at gmail.com  Wed Oct 17 17:03:56 2007
From: debajit1 at gmail.com (Debajit Adhikary)
Date: Wed, 17 Oct 2007 21:03:56 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <mailman.137.1192653677.13605.python-list@python.org>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
Message-ID: <1192655036.279184.255720@q3g2000prf.googlegroups.com>

On Oct 17, 4:41 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> On Wed, 2007-10-17 at 20:27 +0000, Debajit Adhikary wrote:
> > I have two lists:
>
> > a = [1, 2, 3]
> > b = [4, 5, 6]
>
> > What I'd like to do is append all of the elements of b at the end of
> > a, so that a looks like:
>
> > a = [1, 2, 3, 4, 5, 6]
>
> > I can do this using
>
> > map(a.append, b)
>
> > How do I do this using a list comprehension?
>
> You don't.
>
> > (In general, is using a list comprehension preferable (or more
> > "pythonic") as opposed to using map / filter etc.?)
>
> In general, a list comprehension is more Pythonic nowadays, but in your
> particular case the answer is neither map nor a list comprehension, it's
> this:
>
> a += b
>
> HTH,
>
> --
> Carsten Haesehttp://informixdb.sourceforge.net

Thanks a ton :)

What in general is a good way to learn about little things like these?
(I'm fairly new to the language)

A google search for 'python list methods" did not turn up the +
operator anywhere for me. Where could I find the official
documentation for built in structures like the list? (I just noticed
that the + operator for lists is mentioned in Beazley's Python
Essential Reference -- in the opening pages, which I didn't look at
when I was writing the earlier code.)

How does "a.extend(b)" compare with "a += b" when it comes to
performance? Does a + b create a completely new list that it assigns
back to a? If so, a.extend(b) would seem to be faster. How could I
verify things like these?



From david.trem at gmail.com  Sun Oct  7 15:58:21 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sun, 7 Oct 2007 21:58:21 +0200
Subject: Need help to find origin of a memory leakage
In-Reply-To: <129e1cd10710040829v263acf1btd42b16350381e7b8@mail.gmail.com>
References: <129e1cd10710040829v263acf1btd42b16350381e7b8@mail.gmail.com>
Message-ID: <129e1cd10710071258x5ba2a43as1db5ae5776ca8ca2@mail.gmail.com>

Finaly catch the memory leak I was fighting with !!!!
Was a tricky one, but the solution was simple:
I had to include the contents of the notebook tab in a frame.
Otherwise the memory is not released when you remove the tab.

Any idea why is it like that??? Could it be kind of pygtk bug?

I attach the corrected example for the records.

Davic

2007/10/4, David Tremouilles <david.trem at gmail.com>:
> hello,
>
>  I'm struggling with a memory leakage of my  app for quite some
> time. Could somebody help?
>
> I join a demo program in attachment.
> The problem is that the memory consumption keeps on increasing while
> opening and closing tabs.
> In the demo attached a click on "button" will open a new tab. If, for
> example, you open ten new tabs, then close ten tabs, and open again
> ten tab, and repeat this many times you will see the memory
> consumption increases after each 10 close-10 open cycles.
> Could somebody help me on finding the origin of this leak?
>
> Note: I already post on pygtk list and did not get any useful help at
> this point in time.
> I use
> Python 2.5.1
> GTK: (2, 12, 0)
>  pyGTK: (2, 12, 0)
> I already observed the same issue with older versions...
> It's been a long time I try to solve it...
>
> Thanks in advance,
>
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: mem_leak.py
Type: application/octet-stream
Size: 2842 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/e2f92867/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fenetre.glade
Type: application/octet-stream
Size: 1956 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/e2f92867/attachment-0001.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: element.glade
Type: application/octet-stream
Size: 1798 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/e2f92867/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: mem_leak_solved.py
Type: application/octet-stream
Size: 2916 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/e2f92867/attachment-0003.obj>

From thorsten at thorstenkampe.de  Mon Oct 15 14:20:30 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Mon, 15 Oct 2007 19:20:30 +0100
Subject: Normalize a polish L
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
Message-ID: <MPG.217dbfcba9423866989713@news.individual.de>

* Peter Bengtsson (Mon, 15 Oct 2007 16:33:26 -0000)
> In UTF8, \u0141 is a capital L with a little dash through it as can be
> seen in this image:
> http://static.peterbe.com/lukasz.png
> I tried this:
> >>> import unicodedata
> >>> unicodedata.normalize('NFKD', u'\u0141').encode('ascii','ignore')
> ''
> 
> I was hoping it would convert it it 'L' because that's what it
> visually looks like. And I've seen it becoming a normal ascii L before
> in other programs such as Thunderbird.

The 'L' is actually pronounced like the English "w"...
 
> I also tried the other forms: 'NFC', 'NFKC', 'NFD', and 'NFKD' but
> none of them helped.

>>> unicodedata.decomposition(u'\N{LATIN CAPITAL LETTER C WITH CEDILLA}')
'0043 0327'

>>> unicodedata.normalize('NFKD', u'\N{LATIN CAPITAL LETTER C WITH CEDILLA}').encode('ascii','ignore')
'C'

>>> unicodedata.decomposition(u'\N{LATIN CAPITAL LETTER L WITH STROKE}')
''


From DustanGroups at gmail.com  Fri Oct  5 07:19:44 2007
From: DustanGroups at gmail.com (Dustan)
Date: Fri, 05 Oct 2007 11:19:44 -0000
Subject: novice list
In-Reply-To: <mailman.1572.1191582075.2658.python-list@python.org>
References: <mailman.1572.1191582075.2658.python-list@python.org>
Message-ID: <1191583184.675377.3550@o3g2000hsb.googlegroups.com>

On Oct 5, 6:01 am, Istv?n <uhum2... at freemail.hu> wrote:
> Could somebody suggest me a novice Python list, please?
> Thanks, Istvan

You're there.



From robert.kern at gmail.com  Mon Oct 22 20:57:08 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 22 Oct 2007 19:57:08 -0500
Subject: parallel NumPy: PyMPI, myMPI or something else?
In-Reply-To: <1193094391.758441.124940@q5g2000prf.googlegroups.com>
References: <1193001446.939761.122290@t8g2000prg.googlegroups.com>	<mailman.300.1193022685.13605.python-list@python.org>
	<1193094391.758441.124940@q5g2000prf.googlegroups.com>
Message-ID: <ffjgtb$ttb$1@ger.gmane.org>

smithken04 at yahoo.com wrote:
> Robert,
> the answer could not have been shorter, but I got exactly the
> information I was looking for :-)
> Thank you so much!
> 
> Just a single followup question:
>>> Or do I have to split each problem myself to make use of the
>>> parallelism?
>> Pretty much.
> Does "pretty much" imply that actually *some* parts of NumPy do make
> use of the parallel environment without any MPI handling from the
> user? I didn't find an indication for this during my short skimming
> over the NumPy documentation.

Sorry, that's really just American teenager idiom that's followed me into
adulthood; it means, roughly, "Yes, this is entirely, unequivocally true," much
like "Literally!" usually means "Figuratively!"

No part of numpy proper takes advantage of parallelism. Eric Jones has been
toying with using threads to split up some operations on large arrays between
cores on an SMP system, but it is not ready to merge into the trunk. The
performance numbers haven't been that good. The cost of thread locks is high.
But then, only one approach has been tried; if you are interested in trying
others, we'd be more than happy to help you along on the numpy-discussion
mailing list.

  http://svn.scipy.org/svn/numpy/branches/multicore/
  http://www.scipy.org/Mailing_Lists

-- 
Robert Kern

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



From matt at tplus1.com  Thu Oct 18 23:10:40 2007
From: matt at tplus1.com (Matthew Wilson)
Date: Fri, 19 Oct 2007 03:10:40 GMT
Subject: I can't get minimock and nosetests to play nice
Message-ID: <slrnfhg81f.itb.matt@coleridge.tplus1.com>



I'm curious if anyone has ever tried using nosetests along with
minimock.

I'm trying to get the two to play nice and not making progress.  I
also wonder if I'm using minimock incorrectly.

Here's the code I want to test, saved in a file dtfun.py.

    class Chicken(object):
       "I am a chicken."
       def x(self): return 1
       def z(self): return 1

    def g():

       """
       Verify that we call method x on an instance of the Chicken class.

       # First set up the mockery.
       >>> from minimock import Mock
       >>> Chicken = Mock('Chicken')
       >>> Chicken.mock_returns = Mock('instance_of_chicken')

       Now this stuff is the real test.
       >>> g()
       Called Chicken()
       Called instance_of_chicken.x()
       """

       # This is what the function does.
       c = Chicken()
       c.x()

    if __name__ == "__main__":

       # First set up the mockery.
       from minimock import Mock
       Chicken = Mock('Chicken')
       Chicken.mock_returns = Mock('instance_of_chicken')

       # Now run the tests.
       import doctest
       doctest.testmod()

Here's the results when I run the code using doctest.testmod (which
passes) and nosetests --with-doctest (KABOOM):

$ python dtfun.py # Nothing is a good thing here.

$ nosetests --with-doctest dtfun.py
F
======================================================================
FAIL: Doctest: dtfun.g
----------------------------------------------------------------------
Traceback (most recent call last):
 File "doctest.py", line 2112, in runTest
   raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for dtfun.g
 File "/home/matt/svn-checkouts/scratch/python/dtfun/dtfun.py", line 13,
in g

----------------------------------------------------------------------
File "/home/matt/svn-checkouts/scratch/python/dtfun/dtfun.py", line
22, in dtfun.g
Failed example:
   g()
Expected:
   Called Chicken()
   Called instance_of_chicken.x()
Got nothing


----------------------------------------------------------------------
Ran 1 test in 0.015s

FAILED (failures=1)

It seems like nose isn't building the mock objects.

Any ideas?

Matt


From ldo at geek-central.gen.new_zealand  Thu Oct  4 04:07:31 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 21:07:31 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<85hcl8qaj7.fsf@lola.goethe.zz> <fe0q7a$e42$1@orkan.itea.ntnu.no>
	<Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d@insightbb.com>
	<fe10en$hmk$1@orkan.itea.ntnu.no>
Message-ID: <fe2703$vs0$6@lust.ihug.co.nz>

In message <fe10en$hmk$1 at orkan.itea.ntnu.no>, Bent C Dalager wrote:

> Unfortunately, these days English almost always means American English...

North American or South American? Seems like USAmericans speak a little
different English from other Americans...


From edreamleo at charter.net  Sat Oct 27 07:14:52 2007
From: edreamleo at charter.net (Edward K Ream)
Date: Sat, 27 Oct 2007 06:14:52 -0500
Subject: ANN: Leo 4.4.4 beta 4 released
Message-ID: <a5FUi.4$we7.1@newsfe02.lga>

Leo 4.4.4 beta 4 is available at:
http://sourceforge.net/project/showfiles.php?group_id=3458&package_id=29106

This beta 4 version fixes all bugs reported against Leo 4.4.4 beta 3.

Leo is a text editor, data organizer, project manager and much more. See:
http://webpages.charter.net/edreamleo/intro.html

Leo 4.4.4 contains many important features originally planned for later 
releases.

The highlights of Leo 4.4.4:
----------------------------

- The Great Graph Aha (tm): simple scripts allow Leo outlines to represent
  arbitrary directed graphs. There is no need for a separate 'graph world'. 
The
  graphed.py plugin is a direct result of this Aha. The graphed.py plugin 
allows
  you to create general graphs from Leo outlines.

- @menus trees in settings files create all of Leo's menus.  It is now dead
  easy to make Leo's menus look the way you want.

- @buttons trees in settings files create common @button nodes created in 
all
  Leo outlines.

- @auto nodes eliminate sentinels in derived files, thereby allowing people 
to
  collaborate using Leo more easily.

- New commands for resolving cvs conflicts.

- A threading_colorizer plugin replaces the __jEdit_colorizer__ plugin.
  This plugin features much better performance and a new, elegant algorithm.

- Leo is now compatible with jython.

- Better support for icons in headlines.

- The usual assortment of bug fixes and other minor improvements.

Links:
------
Leo:      http://webpages.charter.net/edreamleo/front.html
Home:     http://sourceforge.net/projects/leo/
Download: http://sourceforge.net/project/showfiles.php?group_id=3458
CVS:      http://leo.tigris.org/source/browse/leo/
Quotes:   http://webpages.charter.net/edreamleo/testimonials.html

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at yahoo.com
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From kyosohma at gmail.com  Thu Oct 25 13:43:53 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Thu, 25 Oct 2007 17:43:53 -0000
Subject: Python Windows Installation
In-Reply-To: <1193333796.807911.106350@22g2000hsm.googlegroups.com>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<bgd0i3lmeemshhs0bakbof4ati38i8cijn@4ax.com>
	<1193333796.807911.106350@22g2000hsm.googlegroups.com>
Message-ID: <1193334233.504846.229800@o80g2000hse.googlegroups.com>

On Oct 25, 12:36 pm, TheFlyingDutchman <zzbba... at aol.com> wrote:
> On Oct 24, 11:22 pm, Tim Roberts <t... at probo.com> wrote:
>
> > TheFlyingDutchman <zzbba... at aol.com> wrote:
>
> > >I am trying to install Python 2.5 on Windows XP. It installs into the
> > >root directory on C:\ instead of C:\Python25 which it shows by default
> > >as what it plans to install to. Selecting D:\Python25 on a previous
> > >iteration put the exe in D:\ and did not create a Python25 directory.
>
> > Where did you get the installer?  I've installed Python on Windows many,
> > many times, and have never seen this issue.
> > --
> > Tim Roberts, t... at probo.com
> > Providenza & Boekelheide, Inc.
>
> from python.org.   I doubt many people get this or it would be fixed
> but it still is shocking how it can prompt me that the installation
> directory exists - showing that it fully knows where it is supposed to
> install it - and then go ahead and install it to the root directory
> and claim success. It also uninstalls Python if you ask it to so any
> screwy settings from a previous install should be removed after the
> uninstall, but it also fails to install correctly after an uninstall.

I've never had any problems getting Python to install on Windows XP
SP2. I have had a few issues with getting Python in the system path,
especially when I have multiple versions of Python installed.

My guess is that Windows itself may be getting goofy. I know that if I
use Windows heavily for a year and a half or so (uninstalling and
installing lots of programs), it usually starts acting flakey. A fresh
install of the OS always helps those situations.

Alternatively, you could just change the directory to "C:\Py", install
it there and then rename it "C:\Python25". Then go to the registry and
do a search and replace as well as make sure the Environmental
Settings are fixed accordingly. Yes, it is a pain.

Mike



From mensanator at aol.com  Wed Oct 24 17:32:48 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Wed, 24 Oct 2007 14:32:48 -0700
Subject: Iteration for Factorials
In-Reply-To: <pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
Message-ID: <1193261568.712027.234520@e9g2000prf.googlegroups.com>

On Oct 24, 4:05 pm, Lou Pecora <pec... at anvil.nrl.navy.mil> wrote:
> In article <slrnfhvalj.67s.n... at irishsea.home.craig-wood.com>,
>  Nick Craig-Wood <n... at craig-wood.com> wrote:
>
>
>
>
>
> > Py-Fun <lorna.bu... at gmail.com> wrote:
> > >  I'm stuck trying to write a function that generates a factorial of a
> > >  number using iteration and not recursion.  Any simple ideas would be
> > >  appreciated.
>
> > Here is the math geek answer ;-)
>
> > import math
>
> > def factorial(i):
> >     n = i + 1
> >     return math.exp(-n)*(n**(n-0.5))*math.sqrt(2*math.pi)*(1. + 1./12/n +
> >     1./288/n**2 - 139./51840/n**3)
>
> > Works for non integer factorials also...
>
> > See here for background
>
> >  http://mathworld.wolfram.com/StirlingsSeries.html
>
> Well, that's Sterling's formula.  You do have to worry about
> convergence/accuracy.
>
> How about (for intergers - simple-minded version):
>
> def factorial(i):
>    fact=1.0
>    for n in xrange(i):
>       fact=n*fact
>    return fact

Simple minded indeed.

>>> factorial(3)
0.0

>
> There might even be an array method that can be adapted to get the
> product.  Is there a product method? (analogous to a sum method)
>
> Then you could use,
>
>    arr=arange(i)+1
>    fact=arr.product()  # or something like that
>
> --
> -- Lou Pecora- Hide quoted text -
>
> - Show quoted text -




From ldo at geek-central.gen.new_zealand  Sat Oct  6 04:18:28 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sat, 06 Oct 2007 21:18:28 +1300
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
Message-ID: <fe7gck$d11$5@lust.ihug.co.nz>

In message <1191594819.381604.20680 at o80g2000hse.googlegroups.com>,
timw.google wrote:

> I want to write a python script that runs rsync on a given directory
> and host. I build the command line string, but when I try to run
> subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
> os.system(cmd), I get prompted for my login password.

Why not set up a public/private SSH key pair between the accounts on the two
machines? Then you can get in without a password.



From smithken04 at yahoo.com  Mon Oct 22 19:06:31 2007
From: smithken04 at yahoo.com (smithken04 at yahoo.com)
Date: Mon, 22 Oct 2007 16:06:31 -0700
Subject: parallel NumPy: PyMPI, myMPI or something else?
In-Reply-To: <mailman.300.1193022685.13605.python-list@python.org>
References: <1193001446.939761.122290@t8g2000prg.googlegroups.com>
	<mailman.300.1193022685.13605.python-list@python.org>
Message-ID: <1193094391.758441.124940@q5g2000prf.googlegroups.com>

Robert,
the answer could not have been shorter, but I got exactly the
information I was looking for :-)
Thank you so much!

Just a single followup question:
> > Or do I have to split each problem myself to make use of the
> > parallelism?
>
> Pretty much.
Does "pretty much" imply that actually *some* parts of NumPy do make
use of the parallel environment without any MPI handling from the
user? I didn't find an indication for this during my short skimming
over the NumPy documentation.

Ken



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct  3 07:04:28 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 13:04:28 +0200
Subject: A total bullshit (was : A Must Read!!!)
In-Reply-To: <1191403384.456238.92870@22g2000hsm.googlegroups.com>
References: <1191403384.456238.92870@22g2000hsm.googlegroups.com>
Message-ID: <47037730$0$21878$426a74cc@news.free.fr>

richard.james861 at gmail.com a ?crit :
> I have found an excellent resource on Object Oriented Programming.
> 
> 
(url snipped to protect the innocents)

Let's see:

"An object has methods, properties and events."

Hem...

"oriented programming probably existed before the concept of a class 
came into being but today the concept of a class is essential to object 
orientation."

Hem hem...

This is total bullshit.


From grante at visi.com  Fri Oct  5 12:11:07 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 05 Oct 2007 16:11:07 -0000
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
	<mailman.1586.1191596681.2658.python-list@python.org>
Message-ID: <13gcogrm9uloj4b@corp.supernews.com>

On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:
>>
>>> I've just been told by the editors at Python Magazine that the
>>> first issue is out.
>> 
>> The first issue is issue number 10?
>> 
>> That's a bit silly.
>
> It's the October edition. They obviously decided to make sure
> the month numbering was consistent across the volumes.

I presumed that was the reasoning. It just seems
counter-intuitive (and sort of un-Pythonic) to start numbering
a sequence of objects at 10. ;)

-- 
Grant Edwards                   grante             Yow! Hmmm ... a CRIPPLED
                                  at               ACCOUNTANT with a FALAFEL
                               visi.com            sandwich is HIT by a
                                                   TROLLEY-CAR ...


From MrJean1 at gmail.com  Tue Oct 30 13:15:26 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Tue, 30 Oct 2007 17:15:26 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
Message-ID: <1193764526.526065.274250@t8g2000prg.googlegroups.com>

Building 64-bit Python 2.4.4 on Solaris 10 and SUC C/C++ using the
instructions from

  <http://ccnuma.anu.edu.au/~wpc/blog/programming/building-
python.html>

worked just fine on Ultra 20 Opteron machine.  The test result summary
is below.

/Jean Brouwers

....
249 tests OK.
2 tests failed:
    test_cmath test_pty
40 tests skipped:
    test_aepack test_al test_applesingle test_bsddb test_bsddb185
    test_bsddb3 test_bz2 test_cd test_cl test_codecmaps_cn
    test_codecmaps_hk test_codecmaps_jp test_codecmaps_kr
    test_codecmaps_tw test_crypt test_curses test_dl test_gdbm test_gl
    test_imageop test_imgfile test_linuxaudiodev test_macfs
    test_macostools test_nis test_normalization test_ossaudiodev
    test_pep277 test_plistlib test_rgbimg test_scriptpackages
    test_socket_ssl test_socketserver test_tcl test_timeout
    test_unicode_file test_urllib2net test_urllibnet test_winreg
    test_winsound
5 skips unexpected on sunos5:
    test_tcl test_bz2 test_crypt test_dl test_nis


plumb and tree wrote:
> I've been trying for days to build 64 bit python with Solaris 10 + Sun
> Studio 12.
>
> Can anyone helpl please.
>



From jcd at sdf.lonestar.org  Mon Oct 29 14:09:37 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 29 Oct 2007 14:09:37 -0400
Subject: Built-in functions and keyword arguments
In-Reply-To: <Xns99D893230B22Cduncanbooth@127.0.0.1>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<Xns99D893230B22Cduncanbooth@127.0.0.1>
Message-ID: <20071029180936.GD3648@sdf.lonestar.org>

On Mon, Oct 29, 2007 at 02:27:50PM +0000, Duncan Booth wrote regarding Re: Built-in functions and keyword arguments:
> 
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> 
> wrote:
> 
> > In the second case, the name of the argument *is* 'object'. Which is not 
> > the case for the builtin len (which, fwiw, has type 
> > 'builtin_function_or_method', not 'function', so inspect.getargspec 
> > couldn't tell me more).
> > 
> ><ot>
> > While we're at it, you should avoid using builtin's names for 
> > identifiers - here, using 'object' as the arg name shadows the builtin 
> > 'object' class).
> ></ot>
> 
> I think you are being a little bit unfair here: help(len) says:
> 
> len(...)
>     len(object) -> integer
>     
>     Return the number of items of a sequence or mapping.
> 
> which implies that the argument to len has the name 'object' (although in 
> fact it doesn't have a name). The OP was simply asking about the difference 
> in calling conventions, not proposing to write code using 'object' as the 
> argument name.

Hmm....  To my mind, that just implies that the *type* of the expected input is an object.  Just like the "-> integer" tells you that the type of the output is an integer.  If the documentation read "len(s=object) -> integer", then I would expect a keyword argument s typed as an object.

Now that might also be misleading, as not all objects have a length (integers, for example raise a TypeError).  But the documentation has to say something, which doesn't imply that every argument has to be a keyword.

Cheers,
Cliff


From josiah.carlson at gmail.com  Tue Oct 23 11:34:19 2007
From: josiah.carlson at gmail.com (Josiah Carlson)
Date: Tue, 23 Oct 2007 15:34:19 -0000
Subject: Adding idle timeout capabilities to asyncore
In-Reply-To: <1193081330.701282.149040@v29g2000prd.googlegroups.com>
References: <1193081330.701282.149040@v29g2000prd.googlegroups.com>
Message-ID: <1193153659.869282.34310@v23g2000prn.googlegroups.com>

On 22 Ott, 12:28, Giampaolo Rodola' <gne... at gmail.com> wrote:
> Hi there.
> We're talking about an asyncore-based server.
> Just for the heck of it I'd like to set a timeout which will
> disconnects the clients if they're inactive (i.e., no command or data
> transfer in progress) for a long period of time.
> I was thinking about putting the timeout value into an attribute:
>
> def settimeout(self, secs):
>      self.timeout = time.time() + secs
>
> And then have the readable method call time.time() at every loop to
> check if time has passed or not:
>
> def readable(self):
>     if time.time() >= self.timeout:
>         self.send("Timeout")
>         self.close()
>     return 1
>
> My only concern is if it's a good idea calling time.time() so often.
> Since A LOT of clients could be connected simultaneously, couldn't it
> be a too much resource-intensive operation?
> I'd also be curious to know how Twisted implemented this kind of
> stuff.
> By calling time.time() at every loop?
>
> Thanks in advance.

Calling time.time() is relatively inexpensive in comparison to pure
Python function calls, but indeed, it could be a bottleneck.

I don't know what Twisted does, but what I would do is to add two
variables to each instance of the class you want to add timeouts to;
self.timeout and self.lastdata .  self.lastdata would hold the time
for the last time you sent or received data on the socket, and
self.timeout would hold the delay between when you last sent/received
data and when it should be closed due to idle timeout.

Now, since you are smart, you don't need to alter your handle_send()
or handle_receive() methods in your asyncore subclass.  Instead, you
rewrite asyncore.poll() to update .lastdata for every socket that is
in either the reader or writer list, which will result in one
time.time() call.  Further, to check for timeouts, you only ever need
to check those sockets that are *not* in the readable or writable
lists...

To be precise, add the following block to your own copy of
asyncore.poll just after the 'for fd in e:' block...


        #handle timeouts
        rw = set(r) + set(w)
        now = time.time()
        for f in (i for i in rw if i in map):
            map[f].lastdata = now
        for j in (map[i] for i in map if i not in rw):
            if j.timeout+j.lastdata > now:
                #timeout!
                j.handle_close()

You ARE going to need to initialize .timeout and .lastdata members for
every instance, but that shouldn't be so bad (for a socket that
doesn't time out, I would actually suggest a 1 hour or 1 day timeout).

 - Josiah



From arne at vajhoej.dk  Sun Oct 21 10:39:53 2007
From: arne at vajhoej.dk (=?UTF-8?B?QXJuZSBWYWpow7hq?=)
Date: Sun, 21 Oct 2007 10:39:53 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
Message-ID: <471b64b2$0$90272$14726298@news.sunsite.dk>

Lew wrote:
>> very
>> different. Having a dead - i mean end of development line software
>> like TeX - and
> 
> Based on what do you call it "dead end".  It's used, it's outlasted many 
> other flashes in the pan, it does what its users require.  You will need 
> evidence for such a claim.

According to wikipedia the last version is from december 2002.

That level of activity could be considered dead.

It would for almost any other software. Tex has some
"absolute" over it, so I am not sure normal software
practices apply.

But you could argue based on that.

Arne



From kyosohma at gmail.com  Wed Oct 10 14:26:16 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 10 Oct 2007 18:26:16 -0000
Subject: Building Binary Packages
In-Reply-To: <pan.2007.10.10.16.49.52@afn.org>
References: <1192026935.627151.160810@19g2000hsx.googlegroups.com>
	<pan.2007.10.10.16.49.52@afn.org>
Message-ID: <1192040776.147586.268680@y42g2000hsy.googlegroups.com>

On Oct 10, 11:53 am, "Jim B. Wilson" <wil... at afn.org> wrote:
> On Wed, 10 Oct 2007 14:35:35 +0000, kyosohma wrote:
> > I am trying to figure out how to build binaries for Python packages and
> > I've done it with MinGW.
>
> Apparently, you still can:http://tinyurl.com/yb4bps

That's a wealth of information. It'll take a while for me to grasp it
all, but thanks a lot! Maybe I'll compile with both for a while to see
if there's any obvious differences.

Mike



From kar1107 at gmail.com  Thu Oct  4 02:12:32 2007
From: kar1107 at gmail.com (Karthik Gurusamy)
Date: Thu, 04 Oct 2007 06:12:32 -0000
Subject: A question about subprocess
In-Reply-To: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
Message-ID: <1191478352.018857.217720@g4g2000hsf.googlegroups.com>

On Oct 3, 9:46 am, JD <Jiandong... at gmail.com> wrote:
> Hi,
>
> I want send my jobs over a whole bunch of machines (using ssh). The
> jobs will need to be run in the following pattern:
>
> (Machine A)   (Machine B)  (Machine C)
>
> Job A1             Job B1            Job C1
>
>  Job A2           Job B2            etc
>
>  Job A3          etc
>
>  etc
>
> Jobs runing on machine A, B, C should be in parallel, however, for
> each machine, jobs should run one after another.
>
> How can I do it with the subprocess?

subprocess is not network aware. What you can do is write a simple
python script say run_jobs.py which can take in a command-line
argument (say A or B or C) and will fire a sequence of subprocesses to
execute a series of jobs. This will ensure the serialization condition
like A2 starting after A1's completion.

Now you can write a load distributer kind of script which uses ssh to
login to the various machines and run run_jobs.py with appropriate
argument (Here I assume all machines have access to run_jobs.py -- say
it may reside on a shared mounted file-system).

e.g. in outer script:

ssh machine-A run_jobs.py A
ssh machine-B run_jobs.py B
ssh machine-B run_jobs.py C
...

You may want to fire all these at once so that they all execute in
parallel.

Karthik

>
> Thanks,
>
> JD




From duane.kaufman at gmail.com  Tue Oct 23 09:47:06 2007
From: duane.kaufman at gmail.com (TheSeeker)
Date: Tue, 23 Oct 2007 06:47:06 -0700
Subject: Set operations on object attributes question
Message-ID: <1193147226.862501.97240@v23g2000prn.googlegroups.com>

Hi,

I have run into something I would like to do, but am not sure how to
code it up. I would like to perform 'set-like' operations (union,
intersection, etc) on a set of objects, but have the set operations
based on an attribute of the object, rather than the whole object.

For instance, say I have (pseudo-code):

LoTuples1 = [(1,1,0),(1,2,1),(1,3,3)]
Set1=set(LoTuples1)
LoTuples2 = [(2,1,3),(2,2,4),(2,3,2)]
Set2=set(LoTuples2)

What I would like to be able to do is:

Set3 = Set1union(Set2)
Set3.intersection(Set2, <use object[2]>)

to return:
set([(2,1,3), (1,3,3)])

How can one do this operation?

Thanks,
Duane



From rhyde at cs.ucr.edu  Thu Oct  4 22:28:46 2007
From: rhyde at cs.ucr.edu (rhyde at cs.ucr.edu)
Date: Thu, 04 Oct 2007 19:28:46 -0700
Subject: Announcing the RosAsm Library Project
In-Reply-To: <1191548200.284561.102430@w3g2000hsg.googlegroups.com>
References: <1191536947.116741.32130@g4g2000hsf.googlegroups.com>
	<1191548200.284561.102430@w3g2000hsg.googlegroups.com>
Message-ID: <1191551326.248715.177640@w3g2000hsg.googlegroups.com>

On Oct 4, 6:36 pm, Evenbit <nbaker2... at charter.net> wrote:
>
> This is extremely easy to answer.  The average RosAsm coder tends to
> only make use of the libraries documented here:
>
> http://msdn2.microsoft.com/en-us/library/aa383749.aspx

Which is a bit limiting, wouldn't you agree?

>
> If you wish to revue the source code, then bring that issue up with
> Microsoft.  Please let us know of any positive results.  ;)

Actually, at one time I *had* the NT sources on my machine (research
at UCR in the OS research time). Let's just say that at 35 million
lines of code (at the time, this was NT 4.0) it may as well have been
closed source. :-)


>
> If a programmer feels that a project requires him to use a large
> amount of pre-written "library" code and advanced programming features/
> tools, then he must seriously question why he is using assembly
> language (rather than a High-Level Language) in the first place.

Why is that?
You do realize that with every OS API call you're making, you're doing
exactly this -- making use of a large amount of pre-written "library"
code.


> After a programmer has made the choice to code at the ASM level, he
> has already -- by default/definition -- decided to avoid the trappings
> of the HLL world.

What makes you think this?  You do realize, don't you, that the *vast*
majority of people who write assembly code are actually writing
functions to be called from HLLs, right?

And what "trappings" of the HLL world are you talking about?
I've seen *very* little code posted to this group or to any assembly
language site that couldn't be done in almost exactly the same way in
a HLL.

>
> You are indeed one pecular person.  On the one hand [http://www.artofasm.com
> ], you have taught, written a book, built an advanced assembler, and
> generally answer many questions about assembly language.  However, on
> the other hand, you spend a great deal of time here in alt.lang.asm
> denigrating assembler tools and "bashing" those who write assembly
> language.

Well, I wonder why that is?

>
> So, the question is [this goes also for all those regular a.l.a
> trolls]:  Are you here to _support_ the *assembly language*
> community?  



> Or, are you here to encourage everyone to "give up" on ASM
> and adopt an easy HLL instead?

I'm all for people using the appropriate tools for a given task. If an
"easy HLL" is more appropriate than assembly language for the task,
I'm all for having them adopt an "easy HLL" instead.

The argument that all applications should be written in assembly
language was lost over a decade and a half ago, I'm afraid. Although I
feel that far more code should be written in assembly language than we
see today, only a fool would claim that all code should be written in
assembly language. Today, the main reason for learning assembly
language is *not* so you can write all your code in assembly, but so
that you can understand what HLL compilers are doing with your source
code when they translate it into machine  code. This allows you to
write much better HLL source code.

What's funny, despite Rene's constant dream about an "assembly
rebirth" is that today people are viewing languages like C (and even C+
+) the same way assembly language was viewed 15 years ago. I suspect
that in another 10 years, you'll hear the old time C programmers
arguing about how programs ought to be written in C rather than in the
latest gee-whiz interpreted scripting language.

As much as I would like to see things turn out otherwise, the bottom
line is that assembly language is really dying off. Anyone who doesn't
see this just isn't paying attention. Oh sure, we had a big burst of
activity when the Iczelion Tutorials were first announced, and lately
there *have* been a couple of new books appear, but how many people
are *truly* developing assembly language code (of any kind --
libraries, OSes, system tooks, apps, whatever)?

In one resect, Rene is right. Where are all the assembly apps? And I
add "written with any assembler?" Or sure, a few crackpots (myself
included) still do it, but everyone in this newsgroup is out on the
fringe.

Though *writing* assembly language code isn't so bad, the real problem
with most people is the issues of testing, debugging, and maintenance.
I don't care what debugger you use, one simple fact is that debugging
assembly language code is a heck of a lot more work than debugging HLL
code. The reason is pretty simple -- you can't do things like screw up
the stack in most HLLs; you generally get *some* sort of type checking
in those HLLs that is missing from assembly (including HLA, I might
add). Having just developed a test suite for the HLA stdlib, I can
tell you that it's a heck of a lot more work to test and debug
assembly code that it is to debug the equivalent C code.

Then, on top of that, code has to be maintained. Very few projects in
this world are like HLA/HLA stdlib where a single person works on the
code for 10 years. In  most environments, you have some senior
engineers who develop something, get it working reasonably well, and
then they dump the result on someone else for maintenance and
enhancement. Now matter how good *you* are at assembly language, the
sad fact is that most people, to whom the code is going to be dumped
on later, don't know assembly language or, at best, have a passing
knowledge of it. That, alone, is probably the major reason why
assembly language *has died out*.

Yes, there are still some *very* good reasons for learning assembly
language. And for certain projects there are some good reasons why one
should use assembly language. But assembly language really has become
a "niche within a niche".

The reasons for using assembly language today have little to do with
"avoiding the trappings of a HLL." Indeed, the main reason HLLs have
caught on is to avoid the trappings of assembly language.  Today,
there are only a few valid reasons for using assembly language on a
real project. I'm kind of a special case, I use assembly language (for
example, I'm writing a terminal emulator for General Atomics right now
in assembly language) for a couple of reasons that have little to do
with the project:

1) I enjoy working in assembly language
2) I get to further test the HLA compiler and stdlib by using it on
work-related projects

and then, of course, the biggie:

3) Job Security! :-)

(the last is a joke, if you didn't catch on to that.)

Soon, I expect to be working on a rewrite of the Triga Mark II digital
console software (currently written in C under QNX4) to Linux. I'm
contemplating doing this project in assembly language because it will
force me to write a lot of assembly code under Linux and really shake
out the HLA system under Linux. I'm currently weighing the benefits of
that against the "unprofessionalism" of delivering an application
written in assembly language to the next person who comes along and
works on the project.

Bottom line is that you want to always advocate using the right tool
for the job. Some times, the right tool *is* assembly language; most
of the time it is not (opinions in this newsgroup not withstanding).
Yes, facilities like the HLA standard library make it possible to use
assembly language where it absolutely did not make sense before, but
by and large, assembly's day has passed.

Now as to "denigrating tools around here", well, some tools (e.g.,
RosAsm) are pure crap and they do even more harm to assembly's
reputation and a practical development tool.  Such crap definitely
deserves appropriate comments; especially when it's being pushed as a
"solution" to perceived problems.

One of those perceived problems, and hence this satrical thread, is
this crazy notion that assembly language libraries are bad. This is
absolutely insane. The only reason Rene would even make such a claim
is because he's never gotten around to providing such a library for
RosAsm users. If he doesn't have something, his reaction is to attack
those who do.

hLater,
Randy Hyde







From trimarchimichael at yahoo.it  Wed Oct 10 09:08:07 2007
From: trimarchimichael at yahoo.it (Michael Trimarchi)
Date: Wed, 10 Oct 2007 13:08:07 +0000 (GMT)
Subject: Python on embedded system
Message-ID: <459969.8467.qm@web26214.mail.ukl.yahoo.com>

hi,

I'd like to reduce python and just compile this modules:



	Modulo 59 Nota Tecnica Rev.2 Data 01/03
	
	
	
	
	
	
	
	<!--
		@page { size: 8.5in 11in; margin: 0.79in }
		P { margin-bottom: 0.08in }
	-->
	

_main_

	_buildin_

	marshal

	imp

	sys

	os

	float

	md5

	socket

	asyncore

	select

	thread

	threading

	time

	termios
I set up the PYTHON_DISABLE_MODULES with _PYTHON_DISABLED_MODULES=readline pyexpat dbm gdbm bsddb \
        _curses _curses_panel _tkinter nis zipfile _codecsmodule \
        cryptmodule _randommodule grpmodule regexmodule parsermodule \
        dbmodule glmodule pwdmodule gcmodule rgbimgmodule _heapqmodule \
        imageop cPickle audioop multybytecodec

and using the buildroot patch that disable modules. At the and I having a 12 Mb of stuff. I don't understand how to avoid the installation of a lot
of not useful py file. It is possible to reduce the size of python enviroment?

Regards Michael








      ___________________________________ 
L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail: http://it.docs.yahoo.com/nowyoucan.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/a4730875/attachment.html>

From ricaraoz at gmail.com  Wed Oct 31 12:49:01 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Wed, 31 Oct 2007 13:49:01 -0300
Subject: appending into a list
In-Reply-To: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
References: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
Message-ID: <4728B1FD.2020409@bigfoot.com>

Beema shafreen wrote:
> hi everybody,
>                   I have a file :
>    A                     B              C                     D       E
>             
>  2717353      2717412    A_16_P03641964    214    -59
>   2717626      2717685    A_16_P41563655    25    -59
>   2717710      2717754    A_16_P03641965    1250    -44
>   2719004      2719063    A_16_P03641966    -36    -59
>   2719027      2719086    A_16_P21360229    289    -59
>   2719375      2719428    A_16_P03641967    60    -53
>   2719488      2719542    A_16_P21360231    418    -54
>   2719960      2720014    A_16_P03641968    727    -54
>   2720741      2720786    A_16_P03641969    494    -45
>   2721280      2721339    A_16_P03641970    -28    -59
>   2721311      2721370    A_16_P21360234    150    -59
>   2721520      2721569    A_16_P21360235    199    -49
>   2721768      2721821    A_16_P03641971    139    -53
>   2721960      2722004    A_16_P21360237    312    -44
> I need to append the column D and E into a list:
>                             in such a way that the list should have 
> [D,E,D,E,D,E........]
> How do i do it.
> 
> regards
> shafreen
> 

>>> r = []
>>> for D, E in (i.split()[-2:] for i in open('file')) :
	r.append(D)
	r.append(E)

	
>>> r
['214', '-59', '25', '-59', '1250', '-44', '-36', '-59', '289', '-59',
'60', '-53', '418', '-54', '727', '-54', '494', '-45', '-28', '-59',
'150', '-59', '199', '-49', '139', '-53', '312', '-44']


HTH







From gagsl-py2 at yahoo.com.ar  Fri Oct 19 20:48:04 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 21:48:04 -0300
Subject: Running another python interpreter
References: <47179DBA.8040407@hotmail.com> <4717A261.7090303@hotmail.com>
	<mailman.187.1192737606.13605.python-list@python.org>
	<1192742192.830006.95130@e9g2000prf.googlegroups.com>
Message-ID: <op.t0g0ieg7x6zn5v@gabriel2.softlabbsas.com.ar>


--- Simon Pickles <sipickles at hotmail.com> escribi?:

> os.spawnl(os.P_NOWAIT, sys.executable,
> sys.executable, "gateway.py")
>... works but both process output to the same
> interpreter window. Is there a way to run another
> interpreter window containing gateway.py?

Use the subprocess module, passing CREATE_NEW_CONSOLE into creationflags:

subprocess.call([sys.executable, "gateway.py", "other", "arguments"],
                 creationflags = subprocess.CREATE_NEW_CONSOLE)

-- 
Gabriel Genellina



From robert.rawlins at thinkbluemedia.co.uk  Mon Oct 22 10:45:49 2007
From: robert.rawlins at thinkbluemedia.co.uk (Robert Rawlins - Think Blue)
Date: Mon, 22 Oct 2007 15:45:49 +0100
Subject: Check File Change Every 10 Seconds
In-Reply-To: <op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <27459.1491478079$1193048158@news.gmane.org>
	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <005001c814ba$3d09bca0$b71d35e0$@rawlins@thinkbluemedia.co.uk>

Thanks for your time Gabriel,

That certainly looks to be the type of thing that I'm looking to achieve, however, I forgot to mention I'm running this on a Linux platform and not a Win32 one :-( Sorry.

I'm sure similar things are achievable, I've used os.stat before now to get the time stamp for when a file was last changed, if I perhaps combine this with the while 1: inside a thread I can achieve the same end result? Sound like a good idea?

I just wasn?t sure how safe it was to spawn a thread like this which contains an infinite loop.

Thanks again for your time,

Rob

-----Original Message-----
From: python-list-bounces+robert.rawlins=thinkbluemedia.co.uk at python.org [mailto:python-list-bounces+robert.rawlins=thinkbluemedia.co.uk at python.org] On Behalf Of Gabriel Genellina
Sent: 22 October 2007 15:29
To: python-list at python.org
Subject: Re: Check File Change Every 10 Seconds

En Mon, 22 Oct 2007 06:56:52 -0300, Robert Rawlins - Think Blue  
<robert.rawlins at thinkbluemedia.co.uk> escribi?:

> I've got a requirement to check a file for a change every 10 seconds or  
> so,
> and if the file has been modified since the last time I parsed its  
> content
> into the application then I need to parse it in again. However, I need  
> this
> process to not interrupt the rest of my application flow.

See this article by Tim Golden:
http://timgolden.me.uk/python/win32_how_do_i/watch_directory_for_changes.html

> What is the best way to handle this? Is there some form of file watcher
> module for python which can watch the file for me and then parse any  
> changes
> into the application memory? Or should I be spawning and unjoined thread
> which contains and infinite loop which checks a date/time the file was
> modified against an internal date/time variable for when the application
> last parsed the file into memory?

I would use a different thread waiting for notifications from  
ReadDirectoryChangesW (third option in the link above)
See http://msdn2.microsoft.com/en-us/library/aa365465.aspx for more info  
on ReadDirectoryChangesW

-- 
Gabriel Genellina

-- 
http://mail.python.org/mailman/listinfo/python-list



From daniel.j.larsson at gmail.com  Mon Oct 22 22:06:05 2007
From: daniel.j.larsson at gmail.com (Daniel Larsson)
Date: Tue, 23 Oct 2007 04:06:05 +0200
Subject: Python - why don't this script work?
In-Reply-To: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
Message-ID: <2bfa72fa0710221906l45c36252g2e91b6f134c7fa15@mail.gmail.com>

Try:
$ python image-harvester.py

On 10/23/07, Ohmster <root at dev.nul.invalid> wrote:
>
> I am trying to use this cool script that some MIT guy wrote and it just
> does not work, I get a stream of errors when I try to run it. It is
> supposed to visit a URL and snag all of the pictures on the site. Here is
> the script:
> http://web.mit.edu/pgbovine/www/image-harvester/image-harvester.py
>
> Here is my output when I try to run it on my Fedora 6 machine:
>
> [ohmster at ohmster bench]$ image-harvester.py
> http://public.fotki.com/DaGennelman/
> /home/ohmster/scripts/image-harvester.py: line 59: from: command not found
> [ohmster at ohmster bench]$
>
> The script is to be folowed up with another one to weed out the small
> thumbnails and banner images, here is the base URL:
> http://web.mit.edu/pgbovine/www/image-harvester/
>
> Line 59 in image-harvester.py reads as follows:
>
> 59:     from sgmllib import SGMLParser
> 60:     import urllib
> 70:     from urlparse import urlparse, urljoin
> 71:     import re
> 72:     import os
>
>
> Can anyone tell me what is wrong with this script and why it will not run?
> It does not like the command "from", is there such a command in python?
> Does this mean that python has the "import" command but not the "from"
> command or do we not know this yet as it hangs right away when it hits the
> very first word of the script, "from"? Maybe this is not a Linux script or
> something? I wonder why it needs the x-server anyway, I tried running it
> from an ssh term window and it had a fit about no x-server so now I am
> doing this in a gnome term window. This looked so cool too. :(
>
> Please be patient with me, I do not know python at all, I just want for
> this script to work and if I see enough working examples of python, I may
> just take up study on it, but for right now, I do not know the language.
> Total newbie.
>
> Thanks.
>
>
> --
> ~Ohmster | ohmster /a/t/ ohmster dot com
> Put "messageforohmster" in message body
> (That is Message Body, not Subject!)
> to pass my spam filter.
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/1d167157/attachment.html>

From hniksic at xemacs.org  Wed Oct 31 10:22:17 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 31 Oct 2007 15:22:17 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
References: <mailman.678.1193840121.13605.python-list@python.org>
Message-ID: <87lk9jmkiu.fsf@mulj.homelinux.net>

jelle <jelleferinga at gmail.com> writes:

> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found, 
> should't the .find method return 0 rather than -1?

How would you treat the case of 'something' being at the beginning of
the string?  After all, find returns the index.

> this breaks the 
>
> if check.find('something'):
>     do(somethingElse)
>
> idiom, which is a bit of a pity I think.

if 'something' in check:
    do(somethingElse)


From byte8bits at gmail.com  Mon Oct  1 16:27:43 2007
From: byte8bits at gmail.com (brad)
Date: Mon, 01 Oct 2007 16:27:43 -0400
Subject: slice last 4 items from a list
Message-ID: <fdrl81$13c$1@solaris.cc.vt.edu>

Is this the correct way to slice the last 4 items from a list?

x = [1,2,3,4,5,6,7,8,9]
print x[-4:]

It works, but is it Pythonic?


From sipickles at hotmail.com  Thu Oct 18 13:54:02 2007
From: sipickles at hotmail.com (Simon Pickles)
Date: Thu, 18 Oct 2007 18:54:02 +0100
Subject: Running another python interpreter
Message-ID: <47179DBA.8040407@hotmail.com>

Hello,

I have several servers which link to each other (and of course, to clients).

At present, I am starting them in turn manually. Is there a way with 
python to say, "open gateway.py in a new interpreter window"?

I looked at execv, etc, but they seem to replace the current process. 
Ah, maybe I need spawnv().

I am on windows i386, python 2.5

Thanks

si


From smitty1e at gmail.com  Fri Oct 26 00:19:19 2007
From: smitty1e at gmail.com (smitty1e)
Date: Fri, 26 Oct 2007 04:19:19 -0000
Subject: .py to sqlite translator [1 of 2]
Message-ID: <1193372359.928929.31310@19g2000hsx.googlegroups.com>

Disclaimer(s): the author is nobody's pythonista.  This could probably
be done more elegantly.
The driver for the effort is to get PyMacs to work with new-style
classes.
This rendering stage stands alone, and might be used for other
purposes.
A subsequent post will show using the resulting file to produce (I
think valid) .el trampoline
signatures for PyMacs.
If nothing else, it shows some python internals in an interesting way.
Tested against version 2.5.1
Maybe "lumberjack.py" would be a better name, since "It cuts down
trees, goes real slow, and uses disk galore.  Wishes it'd been
webfoot[1], just like its dear author".
Cheers,
Chris

[1] Author was born in Oregon.

#A sample file:
class sample( object ):
    """fairly trivial sample class for demonstration purposes.
    """
    def __init__( self
                , some_string ):
        self.hold_it = some_string

    def show( self ):
        print self.hold_it

#Invocation:
# ./pysqlrender.py -f sample.py -o output

#Script:
#!/usr/bin/python

"""Script to dump the parse tree of an input file to a SQLite
database.
"""

from   optparse import OptionParser
import os
import parser
import pprint
import re
import sqlite3
import symbol
import token
import types

from   types import ListType \
                  , TupleType

target_table  = """CREATE TABLE tbl_parse_tree        (
                     parse_tree_id     INTEGER PRIMARY KEY
AUTOINCREMENT
                   , parse_tree_symbol_id
                   , parse_tree_indent
                   , parse_tree_value  );"""

target_insert = """INSERT INTO tbl_parse_tree        (
                     parse_tree_symbol_id
                   , parse_tree_indent
                   , parse_tree_value )
                   VALUES         (%s,  %s, '%s' );"""

symbol_table  = """CREATE TABLE tlp_parse_tree_symbol (
                     parse_tree_symbol_id INTEGER PRIMARY KEY
                   , parse_tree_symbol_val   );"""
symbol_insert = """INSERT INTO tlp_parse_tree_symbol (
                     parse_tree_symbol_id
                   , parse_tree_symbol_val )
                   VALUES ( %s, '%s' );"""

class symbol_manager( object ):
    """ Class to merge symbols and tokens for ease of use.
    """
    def __init__( self
                , c    ):
        for k in symbol.sym_name:
            sql = symbol_insert % ( k, symbol.sym_name[k] )
            try:
                c.execute( sql )
            except sqlite3.IntegrityError:
                pass
        for k in token.tok_name:
            sql = symbol_insert % ( k, token.tok_name[k] )
            try:
                c.execute( sql )
            except sqlite3.IntegrityError:
                pass

    def get_symbol( self
                  , key  ):
        ret = -1
        if   symbol.sym_name.has_key(key): ret = symbol.sym_name[key]
        elif token.tok_name.has_key(key) : ret = token.tok_name[ key]
        return ret

    def recurse_it( self, tester ):
        """Check to see if dump_tup should recurse
        """
        if self.get_symbol(tester) > 0:
            return True
        return False

class stocker( object ):
    """Remembers the depth of the tree and effects the INSERTs
       into the output file.
    """
    def __init__( self ):
        self.cur_indent = 0

    def do_symbol( self
                 , c
                 , symbol_value
                 , val  = "" ):
        """Stuff something from the parse tree into the database
table.
        """
        if   symbol_value==5: self.cur_indent += 1
        elif symbol_value==6: self.cur_indent -= 1

        try:
            sql = target_insert    \
                % ( symbol_value
                  , self.cur_indent
                  , re.sub( "'", "`", str(val) ))
            c.execute( sql  )
        except AttributeError:
            print "connection bad in lexer"
        except sqlite3.OperationalError:
            print "suckage at indent of %s for %s" \
                % (self.cur_indent, sql)

def dump_tup( tup
            , sym
            , c
            , stok ):
    """Recursive function to descend TUP and analyze its elements.
         tup       parse tree of a file, rendered as a tuple
         sym       dictionary rendered from symbol module
         c         live database cursor
         stok      output object effect token storage
    """
    for node in tup:
        typ = type( node )
        r   = getattr( typ
                     , "__repr__"
                     , None       )

        if (issubclass(typ, tuple) and r is tuple.__repr__):

            if token.tok_name.has_key( node[0] ):
                stok.do_symbol( c
                              , node[0]
                              , node[1] )
            elif sym.recurse_it( node[0] ):
                stok.do_symbol( c
                              , node[0]
                              , '__py__' ) #If you say node[1] here,
                                           # the sqlite file is fat
                                           # and instructive
                for node2 in node[1:]:
                    dump_tup( node2
                            , sym
                            , c
                            , stok )
            else:
                stok.do_symbol( c
                              , node[0]
                              , node[1] )
                dump_tup(  node[1]
                         , sym
                         , c
                         , stok )
        else:
            stok.do_symbol( c
                          , 0
                          , node )


def convert_python_source_tree_to_table( file_name
                                       , target_name ):
    """Retrieve information from the parse tree of a source file.
    Create an output database file in sqlite.
    Make a table in there, and then procede to stuff the flattened
input parse tree into it.

    file_name   Name of the file to read Python source code from.
    target_name Name for the sqlite database
    """
    x    = open( file_name ).readlines()
    y    = []
    [y.append( line.replace("\r\n","")   ) for line in x]

    ast  = parser.suite(    "\n".join(y) )
    conn = sqlite3.connect( target_name  )
    conn.isolation_level  = None
    c    = conn.cursor()
    c.execute(              target_table )
    c.execute(              symbol_table )
    sym  = symbol_manager(  c            )
    stok = stocker()

    #pprint.pprint( ast.totuple() )
    dump_tup( ast.totuple()
            , sym
            , c
            , stok )

def main():
    usage  = "usage: %prog [options] arg"
    parser = OptionParser(usage)
    parser.add_option("-f", "--file",  dest="filename"
                     , action="store", type="string"
                     , help  ="read python source from FILENAME")
    #TODO: test for existence of output file, eject if exists
    parser.add_option("-o", "--output",dest="output"
                     , action="store", type="string"
                     , help  ="name of sqlite output file")
    (options, args) = parser.parse_args()

    convert_python_source_tree_to_table(  options.filename
                                       ,  options.output   )

if __name__ == "__main__":
    main()



From jstroud at mbi.ucla.edu  Thu Oct 11 19:03:26 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 11 Oct 2007 16:03:26 -0700
Subject: decorating container types (Python 2.4)
In-Reply-To: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
References: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
Message-ID: <fema24$hdq$1@daisy.noc.ucla.edu>

timaranz at gmail.com wrote:
> Hi,
> 
> I have a container class A and I want to add functionality to it by
> using a decorator class B, as follows:
> 
> class A(object):
>     def __len__(self):
>         return 5
> 
> class B(object):
>     def __init__(self, a):
>         self._a = a
> 
>     def __getattr__(self, attr):
>         return getattr(self._a, attr)
> 
>     def other_methods(self):
>         blah blah blah
> 
> I was expecting len(B) to return 5 but I get
> AttributeError: type object 'B' has no attribute '__len__'
> instead.
> I was expecting len() to call B.__len__() which would invoke
> B.__getattr__ to call A.__len__ but __getattr__ is not being called.
> I can work around this, but I am curious if anyone knows _why_
> __getattr__ is not being called in this situation.
> 
> Thanks
> Tim
> 

You will need a metaclass with a __len__ class attribute

class longmeta(type):
   def __len__(cls):
     return 7

class A(object):
   __metaclass__ = longmeta
   pass

py> class longmeta(type):
...   def __len__(cls):
...     return 7
...
py> class A(object):
...   __metaclass__ = longmeta
...   pass
...
py> len(A)
7

James

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

http://www.jamesstroud.com


From kw at codebykevin.com  Sun Oct  7 12:09:16 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Sun, 07 Oct 2007 12:09:16 -0400
Subject: tkinter question
In-Reply-To: <mailman.1607.1191657100.2658.python-list@python.org>
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com><op.tzpugxp2wepdt4@ericb.pragmadev><470629D1.2040404@codebykevin.com><op.tzp40yrqwepdt4@ericb.pragmadev>	<47063964.7000809@codebykevin.com>
	<mailman.1607.1191657100.2658.python-list@python.org>
Message-ID: <470904AC.9090100@codebykevin.com>

Hendrik van Rooyen wrote:
> "Kevin Walzer" <kw at codebykevin.com> wrote:
> 
>> I find "pack" to be more flexible than "grid," so I prefer it for 
>> complex layouts. "grid" is better for simple layouts.
> 
> *does a double take*  are you serious? - my experience is that
> pack is only good for simple single row or single column stuff.
> 
> - Hendrik
> 
> 
Well, I guess it depends on your viewpoint. I find "pack" flexible 
because it allows me to think in terms of top, bottom, right, and left 
in terms of arranging UI elements--it's an elegant way to do it in my 
view. I tend to use "grid" if I have, say, a window with several 
preference items: a label, an entry field, and a button, all arranged in 
rows. "grid" is better for stuff like that, I agree.

See http://www.codebykevin.com/blosxom/business/phynchronicity-new.png: 
this is an application I develop. The layout is all handled by "pack" 
and paned windows. Where you you use "grid" in a layout like this?

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From bcd at pvv.ntnu.no  Wed Oct  3 14:41:48 2007
From: bcd at pvv.ntnu.no (Bent C Dalager)
Date: Wed, 3 Oct 2007 18:41:48 +0000 (UTC)
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<fe0mhm$c08$1@orkan.itea.ntnu.no> <85sl4sqckf.fsf@lola.goethe.zz>
Message-ID: <fe0npc$cvq$1@orkan.itea.ntnu.no>

In article <85sl4sqckf.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>bcd at pvv.ntnu.no (Bent C Dalager) writes:
>
>Not as much "been" liberated, but "turned" liberated.

I expect that either way you split this hair, using "free" in the
sense of "possessing liberty" is still going to be quite reasonable.

>But picking just a single word from a whole explanation of _one_
>naming and declaring it as equivalent is not really being careful with
>language at all.

I have never claimed equivalence. What I have made claims about are
the properties of one of the meanings of a word. Specifically, my
claim is that "free" is a reasonable description of some one or some
thing that has been "liberated".

As an example, when a slave becomes a free man, this is not commonly
understood to mean that he now has a low or zero monetary cost.

>And even when using a Thesaurus, it should be clear that the offered
>alternatives are not supposed to or capable of capturing all nuances
>of the keyword.

I have never claimed to be providing a full definition of the word.
Indeed, I quite clearly conceded very early on that "free" is commonly
associated with what might otherwise be called "gratis" - that is
"free of charge".

My effort has been to point out that the word also has other meanings.

Cheers
	Bent D
-- 
Bent Dalager - bcd at pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs


From besturk at gmail.com  Tue Oct 23 09:48:04 2007
From: besturk at gmail.com (Abandoned)
Date: Tue, 23 Oct 2007 06:48:04 -0700
Subject: How can i protect text format ?
In-Reply-To: <mailman.373.1193146897.13605.python-list@python.org>
References: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
	<mailman.373.1193146897.13605.python-list@python.org>
Message-ID: <1193147284.487902.206210@e9g2000prf.googlegroups.com>

On Oct 23, 4:41 pm, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> On Tue, Oct 23, 2007 at 06:30:18AM -0700, Abandoned wrote regarding How can i protect text format ?:
>
>
>
> > Hi..
> > I want to do a forum with python but i have a problem..
>
> > I have a <textarea> and i write:
> > line 1 hi
> > line 2 how r u
>
> > And then i save to this database ( colomn data type is text)
> > And than it looks "line 1 hi line 2 how r u"..
> > How can i protect \n characters ?
>
> > --
> >http://mail.python.org/mailman/listinfo/python-list
>
> Are you sure they're getting lost on the way into the DB?  Could they be getting lost on the way out?  Say... into an HTML page?
>
> You need to pinpoint your problem more clearly to get a helpful response.
>
> Cheers,
> Cliff

Yes when i selected the data it have one row (there isn't \n)



From bh at izb.knu.ac.kr  Wed Oct 24 12:25:13 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Thu, 25 Oct 2007 01:25:13 +0900
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <O7Sdnegv-qzkUIHanZ2dnUVZ_tWtnZ2d@comcast.com>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com> <ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
	<O7Sdnegv-qzkUIHanZ2dnUVZ_tWtnZ2d@comcast.com>
Message-ID: <1193243113.3267.1.camel@viola.izb.knu.ac.kr>

On Mon, 2007-10-22 at 12:19 -0400, Lew wrote:
> Xah Lee <xah at xahlee.org> wrote:
> >> 4. Inargurated a massive collection of documents that are invalid
> >> HTML. (due to the programing moron's ingorance and need to idolize a
> >> leader, and TeX's inherent problem of being a typesetting system that
> >> is unsuitable of representing any structure or semantics)
> 
> There's something a little fey about someone calling out a "programing [sic] 
> moron's ingorance [sic]" and then devolving right into blue speech.
> 
> I think Xah Lee should look into:
> <http://en.wikipedia.org/wiki/Psychological_projection>

Well, you are making a personal attack, it's dangerous. I wish to see
only discussions about TeX ;;

-- 
Byung-Hee HWANG * ??????? * InZealBomb 
"I'll reason with him."
		-- Vito Corleone, "Chapter 14", page 200


From python.list at tim.thechases.com  Tue Oct  9 11:27:42 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 09 Oct 2007 10:27:42 -0500
Subject: List loops
In-Reply-To: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>
References: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>
Message-ID: <470B9DEE.8030909@tim.thechases.com>

>  >>> alist = range(3)
>  >>> for i in xrange(len(alist)):
> ...   for j in xrange(i+1,len(alist)):
> ...     print i,j,alist[i],alist[j]
> ...
> 0 1 0 1
> 0 2 0 2
> 1 2 1 2
>  >>>
> 
> 
> Is there a way to do this without using indexes?

The following works for me, replicating your code,

 >>> alist = range(3)
 >>> for i, itemA in enumerate(alist):
...     for j, itemB in enumerate(alist[i+1:]):
...             print i,j+i+1,itemA, itemB
...
0 1 0 1
0 2 0 2
1 2 1 2


and is swappable if your alist has other values in it too:

 >>> alist = ['dog', 'cat', 'mouse']
 >>> for i, itemA in enumerate(alist):
...     for j, itemB in enumerate(alist[i+1:]):
...             print i,j+i+1,itemA, itemB
...
0 1 dog cat
0 2 dog mouse
1 2 cat mouse


However, if your list only has those range() values in it, 
there's nothing wrong with doing something like

 >>> for i in alist:
...	for j in alist[i+1:]:
...		print i,j,i,j
...

It looks like you're trying to do permutations/combinations of 
things, in which case you might also find this helpful:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/190465


-tim







From samckain at southslope.net  Wed Oct 31 14:53:08 2007
From: samckain at southslope.net (Steve)
Date: Wed, 31 Oct 2007 18:53:08 +0000 (UTC)
Subject: Dictionary help
Message-ID: <fgaiuk$lsb$1@news.netins.net>

I'm currently working on a little database type program is which I'm 
using a dictionary to store the information. The key is a component a and 
the definition is a list of parts that make up the component. My problem 
is I need to list out several components, but not all, and there 
associated parts to a printer. Not having any luck. I can list them to 
the screen but not the printer. Any help/ideas would be appreciated.

Steve


From duncan.booth at invalid.invalid  Fri Oct 19 16:49:01 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 19 Oct 2007 20:49:01 GMT
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
	<mailman.161.1192686567.13605.python-list@python.org>
	<13he60e4vc6i753@corp.supernews.com>
	<Xns99CD690B6D6Dduncanbooth@127.0.0.1>
	<1192726016.847208.35040@v23g2000prn.googlegroups.com>
Message-ID: <Xns99CEDDEEEB731duncanbooth@127.0.0.1>

Andreas Kraemer <akraemer at sbcglobal.net> wrote:

>> The only other behaviours I would regard as intuitive for iteration over
>> a mutating sequence would be to throw an exception either for mutating
>> the sequence while the iterator exists or for using the iterator after a
>> mutation.
> 
> Maybe it would have been slightly more intuitive if reversed() had
> been implemented like this,
> 
> def Reversed(seq):
>   for i in xrange(len(seq)-1,-1,-1):
>     yield seq[i]
> 
> so that the length of the sequence is determined when the iteration
> starts, not when the iterator is created?

Perhaps, but either way it comes down to "don't modify the sequence while 
iterating".


From trekker182 at comcast.net  Sun Oct 28 23:08:14 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Sun, 28 Oct 2007 23:08:14 -0400
Subject: clear shell screen
Message-ID: <47254E9E.3040008@comcast.net>

Does anyone know how to clear the shell screen completely ?  I tried 
import os and then os.system("clear") was said to have worked in Windows 
XP, but it's just bringing up another window, then it turns black and 
then it closes in within about a second moving the prompt at the 
os.system("clear") line .  I've also tried os.system("cls") with the 
same results.

thx


From aine_canby at yahoo.com  Tue Oct  9 03:33:07 2007
From: aine_canby at yahoo.com (aine_canby at yahoo.com)
Date: Tue, 09 Oct 2007 00:33:07 -0700
Subject: Python and UML
Message-ID: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>

Hi,

I'm working with Python2.5 and pythonWin.

I'd like to start working with and learning more with UML. Can anyone
suggest any freeware design software that I might use to do this? I
also have
Visio installed on my computer if thats of any use...

Thanks,

Aine



From besturk at gmail.com  Sun Oct 28 03:24:34 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 28 Oct 2007 00:24:34 -0700
Subject: insert string problems..
Message-ID: <1193556274.869444.28560@o80g2000hse.googlegroups.com>

Hi..
I want to insert some data to postgresql..
My insert code:
yer="019"
cursor.execute("INSERT INTO ids_%s (id) VALUES (%s)", (yer, id))
I don't want to use % when the insert operation.

in this code give me this error:
psycopg2.ProgrammingError: syntax error at or near "'019'"
LINE 1: SELECT link_id from linkkeywords_'019'

if i do int(yer) , 019 change to 19 ..
How can i do int yer string with 0 ?



From equand at gmail.com  Wed Oct 24 20:50:28 2007
From: equand at gmail.com (equand at gmail.com)
Date: Wed, 24 Oct 2007 17:50:28 -0700
Subject: access.db : sendmail hash map file
Message-ID: <1193273428.109009.205710@q5g2000prf.googlegroups.com>

is there a way to open it? and edit?



From sndive at gmail.com  Tue Oct 30 21:10:55 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Wed, 31 Oct 2007 01:10:55 -0000
Subject: why did these companies choose Tcl over Python
In-Reply-To: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <1193793055.324234.151480@y42g2000hsy.googlegroups.com>

On Oct 30, 3:25 pm, chewie54 <dfabrizi... at gmail.com> wrote:
> Hello,
>
> As an electronics engineer I use some very expensive EDA CAD tool
> programs that are scriptable using Tcl.  I was wondering why these
> companies have choose to use Tcl instead of Python.   Some of these
> are:
>
>    Mentor Graphics ModelTech VHDL and Verilog simulator
>    Synopsys  Design Compiler and Primetime Static Timing Analyzer
>    Actel FPGA tools.
>
> Tcl seems to very popular in my business as the scripting language of
> choice.
>
> I'm in the process of deciding to use Tcl or Python for a CAD tool
> program that I have been working on.    Most of the core of the
> program,  the database,   will be done is C as an extension to either
> Tcl or Python,   but I intend to use Tk or wxPthon for the GUI.   I do
> need publishing quality outputs from drawings done on a graphics
> device that are scaled to standard printer paper sizes.
>
> I would prefer to use Python but can't deny how popular Tcl is,  as
> mentioned above,  so my question is why wasn't Python selected by
> these companies as the choice of scripting languages for their
> product?
>
> Are there any obvious advantages like:
>
>     performance,
>     memory footprint,
>     better cross-platform support,
>     ease of use,
>
> Thanks in advance for your thoughts about this.

tcl is somewhat simpler to extend but you'll pay the price later on in
the
form or the hideous tcl scripts floating around your system



From aaron.watters at gmail.com  Mon Oct  8 16:28:55 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Mon, 08 Oct 2007 13:28:55 -0700
Subject: ANN: NUCULAR fielded text searchable indexing
Message-ID: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>

ANNOUNCE:
  NUCULAR fielded text searchable indexing

Nucular is a system for creating disk based full text indices
for fielded data. It can be accessed via a Python API
or via a suite of command line interfaces.

Nucular is intended to help store and retrieve
searchable information in a manner somewhat similar
to the way that "www.hotjobs.com" stores and
retrieves job descriptions, for example.

Nucular archives fielded documents and retrieves them
based on field value, field prefix, field word prefix,
or full text word prefix, or combinations of these.

Features:

 -- Nucular is very light weight. Updates and accesses
    do not require any server process or other system
    support such as shared memory locking.

 -- Nucular supports concurrency. Arbitrary concurrent
    updates and accesses by multiple processes or threads
    are supported, with no possible locking issues.

 -- Nucular indexes and retrieves large collections quickly.

Read more and download at:
   http://nucular.sourceforge.net

Online demos:

http://www.xfeedme.com/nucular/gut.py/go
http://www.xfeedme.com/nucular/mondial.py/go

I hope you like!
   -- Aaron Watters

===
I don't know ka-RAH-tee
But I know ka-RAY-zee
   -- James Browne



From barronmo at gmail.com  Tue Oct 30 18:08:33 2007
From: barronmo at gmail.com (barronmo)
Date: Tue, 30 Oct 2007 22:08:33 -0000
Subject: choose from a list
In-Reply-To: <1193770225.374384.52290@k79g2000hse.googlegroups.com>
References: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
	<1193770225.374384.52290@k79g2000hse.googlegroups.com>
Message-ID: <1193782113.429067.132740@57g2000hsv.googlegroups.com>

Thanks to both of you for the help.  I made several of the changes you
suggested and am getting the results in the format I want, eg:

0  387  John Smith
1  453  Jane Smith
2  975  Joe Smithton

My plan at this point is, in addition to printing the results of the
query, to create a list with a matching index so the user can select a
name and I can store the patient_ID to get other parts of their
medical record.  Does this sound reasonable?

My code now looks like this:


import MySQLdb

def name_find(namefrag):

     conn = MySQLdb.connect(host = "localhost",
          user = "root",
          passwd = "Barron85",
          db = "meds")
     cursor = conn.cursor(MySQLdb.cursors.DictCursor)
     cursor.execute("SELECT patient_ID, firstname, lastname FROM
demographics WHERE lastname LIKE '%s%%'" % (namefrag))

     result = cursor.fetchall()
     for index, row in enumerate(result):
          print "%d %s   %s %s" % (index, row["patient_ID"],
row["firstname"], row["lastname"])
          #create list here

     cursor.close()
     conn.close()


Thanks again, Mike



From kyosohma at gmail.com  Wed Oct 24 08:57:34 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 24 Oct 2007 12:57:34 -0000
Subject: Python Windows Installation
In-Reply-To: <5o8s2bFlhd8uU2@mid.individual.net>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
Message-ID: <1193230654.408292.38640@k35g2000prh.googlegroups.com>

On Oct 24, 7:27 am, Bjoern Schliessmann <usenet-
mail-0306.20.chr0n... at spamgourmet.com> wrote:
> TheFlyingDutchman wrote:
> > I am trying to install Python 2.5 on Windows XP. It installs into
> > the root directory on C:\ instead of C:\Python25
>
> BTW, what exactly is behind the idea to install to c:\python25
> instead of %PROGRAMFILES%\python25?
>
> Regards,
>
> Bj?rn
>
> --
> BOFH excuse #339:
>
> manager in the cable duct

That's just the default place that Python wants to install to. I
suppose one reason for this is because DOS is stupid when it comes to
spaces in paths. Other than that, I don't know why the Python
developers chose that as the default location.

Mike



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct 12 03:44:45 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 12 Oct 2007 09:44:45 +0200
Subject: Declarative properties
In-Reply-To: <1192173195.972260.144340@e9g2000prf.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<1192143867.686910.210320@t8g2000prg.googlegroups.com>
	<1192173195.972260.144340@e9g2000prf.googlegroups.com>
Message-ID: <470f25ab$0$12106$426a74cc@news.free.fr>

Artur Siekielski a ?crit :
> George Sakkis wrote:
>> By now you must have been convinced that default getters/setters is
>> not a very useful idea in Python but this does not mean you can't do
>> it;
> 
> It's a perfect summary of my thoughts after reading this thread. I
> will use public attributes (with access customizable with properties)
> and remember that in Python I can do everything :).

Well... Almost !-)

And +1 QOTW, BTW.




From rupole at hotmail.com  Mon Oct  1 17:44:41 2007
From: rupole at hotmail.com (Roger Upole)
Date: Mon, 1 Oct 2007 17:44:41 -0400
Subject: win32com COMAdminCatalogObject Value method
References: <1191247471.992094.203630@n39g2000hsh.googlegroups.com>
Message-ID: <1191274799_4541@sp12lax.superfeed.net>


rc wrote:
> I'm trying to convert VB code that registers COM+ components to
> Python. However, I'm unable to set values on COMAdminCatalogObject
> using the Value() method, it seems to think I'm trying to call the get
> method.
>
> VB Code:
> Dim cat As COMAdminCatalog
> Set cat = New COMAdminCatalog
> Dim apps As COMAdminCatalogCollection
> Set apps = cat.GetCollection("Applications")
> Dim app As COMAdminCatalogObject
> Set app = apps.Add
> app.Value("ID") = AppID
>
>
> Python Code:
> objCOMAdminCatalog =
> win32com.client.Dispatch("COMAdmin.COMAdminCatalog")
> objApplications = objCOMAdminCatalog.GetCollection("Applications")
> objCOMAdminCatalogObject = objApplications.Add()
> print "ID", objCOMAdminCatalogObject.Value("ID")  #This is returning
> the random ID
> # app.Value("ID") = AppID # SyntaxError: can't assign to function call
> objCOMAdminCatalogObject.Value("ID", AppID) #Exception thrown
>
> Returns the following error:
> TypeError: Value() takes at most 2 arguments (3 given)

Try objCOMAdminCatalogObject.SetValue("ID", AppID).

         Roger




From google at mrabarnett.plus.com  Wed Oct 17 15:39:49 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Wed, 17 Oct 2007 12:39:49 -0700
Subject: Stopping a fucntion from printing its output on screen
In-Reply-To: <ff584p$5af$1@gemini.csx.cam.ac.uk>
References: <1192633024.035476.262830@i38g2000prf.googlegroups.com>
	<ff584p$5af$1@gemini.csx.cam.ac.uk>
Message-ID: <1192649989.987283.163160@i13g2000prf.googlegroups.com>

On Oct 17, 4:01 pm, Jeremy Sanders <jeremy
+complangpyt... at jeremysanders.net> wrote:
> sophie_newbie wrote:
> > Hi, in my program i need to call a couple of functions that do some
> > stuff but they always print their output on screen. But I don't want
> > them to print anything on the screen. Is there any way I can disable
> > it from doing this, like redirect the output to somewhere else? But
> > later on in the program i then need to print other stuff so i'd need
> > to re-enable printing too. Any ideas?
>
> If they are python functions, this hack should work...
>
> import sys
>
> class NullWriter(object):
>     def write(self, arg):
>         pass
>
> def testfunc():
>     print "this is a test"
>
> nullwrite = NullWriter()
> oldstdout = sys.stdout
> sys.stdout = nullwrite  # disable output
> testfunc()
> sys.stdout = oldstdout  # enable output
> testfunc()
>
You might want to guarantee that the output is re-enabled even if
testfunc() raises an exception:

    nullwrite = NullWriter()
    oldstdout = sys.stdout
    sys.stdout = nullwrite  # disable output
    try:
        testfunc()
    finally:
        sys.stdout = oldstdout  # enable output



From cfbolz at gmx.de  Sun Oct 28 16:42:42 2007
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Sun, 28 Oct 2007 21:42:42 +0100
Subject: finding out the call (and not only the caller)
In-Reply-To: <1191911909.853048.116640@19g2000hsx.googlegroups.com>
References: <mailman.1652.1191793657.2658.python-list@python.org>
	<1191911909.853048.116640@19g2000hsx.googlegroups.com>
Message-ID: <4724F442.50605@gmx.de>

Hi Neal,

nnorwitz at gmail.com wrote:
> The code doesn't handle all the cases (e.g., nested functions), but
> gives you an idea of what can be done and where to look for the info
> (ie, in the stack frame and how to parse the byte codes to some
> extent).  For nested functions, look in co_consts.
> 
> Bytecodes are specific to CPython.  This code won't work on
> IronPython, Jython, or PyPy.  This code really shouldn't be used for
> production.  However, it demonstrates some of the info available.

Actually that's not true for PyPy. PyPy uses CPython's bytecode, so the 
example works just fine.

Cheers,

Carl Friedrich Bolz



From jfurr-nospam at nospam-furrs.org  Thu Oct  4 20:22:09 2007
From: jfurr-nospam at nospam-furrs.org (Jay Furr)
Date: Fri, 05 Oct 2007 00:22:09 -0000
Subject: Dear Hendryx and Leach
References: <470541a7$0$47118$892e7fe2@authen.yellow.readfreenews.net>
	<0llag31er762a2tsdfcs8t1lq9ms1ksghq@4ax.com>
	<QgeNi.259$sm6.23@nlpi069.nbdc.sbc.com>
	<Xns99BFC2342C5CDfnord23@216.168.3.44>
	<upfNi.65$O6.38@bignews2.bellsouth.net>
Message-ID: <Xns99BFCF3528646fnord23@216.168.3.44>

"Frisbee?" <billLASTNAME at yahoo.com> wrote in news:upfNi.65$O6.38
@bignews2.bellsouth.net:

> "Jay Furr" <jfurr-nospam at nospam-furrs.org> wrote in message 
> news:Xns99BFC2342C5CDfnord23 at 216.168.3.44...
>> "MoParMaN" <scott.hendryx.clothes at sbcglobal.net> wrote in news:QgeNi.259
>> $sm6.23 at nlpi069.nbdc.sbc.com:
>>
>>> I will not screw with the cardio doctor again after my stressless stress
>>> test.  Jesus fucking christ, I thought I died for 45 seconds.
>>
>> Can I have your liver, then?
> 
> I take it this means you're good on spleens now? 

Nope, I still need me one of them too.  If I had my druthers it'd be 
Boeheim's, to be honest.

-- 
"It does me no injury for my neighbor to say there are 20 gods, or no 
god. It neither picks my pocket nor breaks my leg."  -- Thomas Jefferson
 
"There's hits in chicken."  -- Wade Boggs


From a.harrowell at gmail.com  Fri Oct 12 10:37:42 2007
From: a.harrowell at gmail.com (TYR)
Date: Fri, 12 Oct 2007 14:37:42 -0000
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <mailman.87.1192115776.927.python-list@python.org>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
Message-ID: <1192199862.532118.306290@t8g2000prg.googlegroups.com>

On Oct 11, 4:17 pm, Tim Golden <m... at timgolden.me.uk> wrote:
> jeremito wrote:
> > On Oct 11, 10:43 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> >> jeremito wrote:
> >>> My Python script makes a bunch of images that I want to use as frames
> >>> in a movie.  I've tried searching for a module that will take these
> >>> images and put them together in a Quicktime or mpeg movie, but haven't
> >>> found anything.  My images are currently pdfs, but I could make them
> >>> into just about anything if needed.
> >>> Is there a module, or example of how to do this?
> >>http://pymedia.org/
>
> >> Diez
>
> > That initially looked promising, but it looks like nobody is working
> > on it anymore and it doesn't compile on Mac.  (I should have mentioned
> > I am using a Mac.)  Any other suggestions?
>
> Not really a Python module but... run them
> through mencoder? (Haven't tried it but it
> seems to be saying it's possible).
>
> http://www.mplayerhq.hu/DOCS/man/en/mplayer.1.html#EXAMPLES%20OF%20ME...
>
> TJG

NodeBox; nodebox.org

GUI application that creates either PDFs or Quicktime vids from python
code. Unix/Linux/MacOS.



From python.list at tim.thechases.com  Wed Oct 24 12:06:44 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 24 Oct 2007 11:06:44 -0500
Subject: optparse help output
In-Reply-To: <1193240835.563154.113810@e9g2000prf.googlegroups.com>
References: <1193240835.563154.113810@e9g2000prf.googlegroups.com>
Message-ID: <471F6D94.4030208@tim.thechases.com>

> I've been using optparse for a while, and I have an option with a
> number of sub-actions I want to describe in the help section:
> 
>     parser.add_option("-a", "--action",
>                       help=\
[snipped formatted help]
> """)
> 
> Unfortunately, when I run the script with --help, this is what I get
> for the -a option:
[snipped munged formatting of help]
> Is there any way to get the formatting I want?

I had the same issue:

http://groups.google.com/group/comp.lang.python/browse_thread/thread/6df6e6b541a15bc2/09f28e26af0699b1?#09f28e26af0699b1

and was directed by Ben Finney to check out a custom formatter. 
I got it working to my satisfaction and posted it in that thread:

http://groups.google.com/group/comp.lang.python/msg/09f28e26af0699b1

It may be a little more kind in what it does with your help-text. 
  If you need variant behavior you can take my code and mung it 
even further.

The changes are basically a copy&paste (including the comments, 
which Steven D'Aprano suggested might be better made into 
docstrings) of the format_description() and format_option() calls 
from the standard-library's source, and changing a few small 
lines to alter the behavior of calls to textwrap.*

Hope this helps,

-tkc






From m.pricejones at gmail.com  Tue Oct  2 13:25:04 2007
From: m.pricejones at gmail.com (m.pricejones at gmail.com)
Date: Tue, 02 Oct 2007 17:25:04 -0000
Subject: Adding behaviour for managing "task" dependencies
In-Reply-To: <47027715$0$11447$9b622d9e@news.freenet.de>
References: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
	<47027715$0$11447$9b622d9e@news.freenet.de>
Message-ID: <1191345904.492599.309660@y42g2000hsy.googlegroups.com>

Stargaming:

Thanks, that's given me plenty to think about. Some wise words. I
guess I should appreciate that with my particular goal there aren't
going to be easy solutions but I definitely don't want to dive down
the wrong track if it can be avoided.

Cheers,
Mike



From nagle at animats.com  Sun Oct 21 12:56:50 2007
From: nagle at animats.com (John Nagle)
Date: Sun, 21 Oct 2007 09:56:50 -0700
Subject: Dealing with "funny" characters
In-Reply-To: <5nuolqFk13gcU1@mid.uni-berlin.de>
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
	<mailman.259.1192890437.13605.python-list@python.org>
	<LlpSi.6020$y21.124@newssvr19.news.prodigy.net>
	<5nuolqFk13gcU1@mid.uni-berlin.de>
Message-ID: <GxLSi.9029$sm6.2250@nlpi069.nbdc.sbc.com>

Diez B. Roggisch wrote:
>>    No, no, that's wrong.  MySQL and the Python interface to it understand
>> Unicode.  You don't want to convert data to UTF-8 before putting it in a
>> database; the database indexing won't work.
> 
> I doubt that indexing has anything to do with it whatsoever.

     Of course it does.  ORDER BY, LIKE, TRIM, and other SQL expressions that
do more than an equal comparison need to know the actual data representation.
If you were to convert to UTF-8 or UCS-2 in the Python program and send
the resulting byte string to MySQL, with MySQL thinking it was storing
ASCII or a BLOB, many SQL functions won't work right.  A database is
not a file system; a database looks at the data.
> 
>>    Here's how to do it right.
>>
>>    First, tell MySQL, before you create your MySQL tables, that the 
>> tables are
>> to be stored in Unicode:
>>
>>     ALTER database yourdatabasename DEFAULT CHARACTER SET utf8;
>>
>> You can also do this on a table by table basis, or even for single 
>> fields,
>> but you'll probably get confused if you do.
>>
>>    Then, when you connect to the database in Python, use something 
>> like this:
>>
>>     db = MySQLdb.connect(host="localhost",
>>         use_unicode = True, charset = "utf8",
>>         user=username, passwd=password, db=database)
>>
>> That tells MySQLdb to talk to the database in Unicode, and it tells 
>> the database
>> (via "charset") that you're talking Unicode.
> 
> You confuse unicode with utf-8 here.
... pontification deleted

> But due to e.g. environmental settings, opened connections will deliver 
> the contents in e.g. latin1. Which of course will lead to problems if 
> you try to return data from the table with the topmost chines first names.
   ???
> 
> So you can alter the encoding the connection delivers and expects 
> byte-strings in. In mysql, this can be done explcit using
> 
> cursor.execute("set names <encoding>")
> 
> Or - as you said - as part of a connection-string.
> 
> db = MySQLdb.connect(host="localhost",
>         use_unicode = True, charset = "utf8",
>         user=username, passwd=password, db=database)
> 
> 
> But there is more to it. If the DB-API supports it, then the API itself 
> will decode the returned strings, using the specified encoding, so that 
> the user will only deal with "real" unicode-objects, greatly reducing 
> the risk of mixing byte-strings with unicode-objects. That's what the 
> use_unicod-parameter is for: it makes the API accept and deliver 
> unicod-objects. But it would do so even if the charset-parameter was 
> "latin1".

     Yes, and that's taken care of if the connection is set up as above.
For legacy reasons, there are both "unicode" and "charset" parameters
to "connect", and they can be set in incompatible ways.
Also, you need MySQL 5 or later to get full Unicode support.

					John Nagle


From mail at timgolden.me.uk  Fri Oct 19 10:59:49 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 19 Oct 2007 15:59:49 +0100
Subject: Please Help !!!
In-Reply-To: <1192805451.425137.28360@t8g2000prg.googlegroups.com>
References: <mailman.200.1192778545.13605.python-list@python.org>
	<1192805451.425137.28360@t8g2000prg.googlegroups.com>
Message-ID: <4718C665.8050201@timgolden.me.uk>

marc wyburn wrote:
> On Oct 17, 10:32 am, Heiko Schlierkamp <hschlierk... at sense-of-
> africa.com.na> wrote:
>> I need to update the virus program every day with the new dat file from
>> mcafee
>> I would like to us a Bat file to go to the web page and download the dat
>> file automatically to a specific Directory, that I have created, but my
>> problem lays in that the bat file will open the file to be downloaded but
>> the bat file does not confirm the save button so that it start to download
>> the file, that I still need to do manual. Please advice me with what still
>> need to be done!!
>> Your help will be very appreciated!!!
>>
>> I have added the file so you can see what it does exactly!!
>>
>>> Heiko Schlierkamp
>>> SENSE OF AFRICA - Namibia
>>> E-mail: hschlierk... at sense-of-africa.com.na
>>> Website:www.sense-of-africa.com
>>> Tel: +264 61 275300
>>> Fax: +264 61 263417
>>> PO Box 2058, Windhoek, Namibia
>>  <<Superdat.rar>>
>>
>>  Superdat.rar
>> 1KDownload
> 
> I'm not going to open that file I'm afraid and I doubt many others
> will either. You are using Python I assume.  Have a look at the urllib
> module and the urlretrieve function.

Or, for a non-Python solution, simply use wget (or some other
command-line downloading program):

   http://users.ugent.be/~bpuype/wget/

TJG


From grante at visi.com  Fri Oct 12 15:29:34 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 19:29:34 -0000
Subject: matching a street address with regular expressions
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
	<1192195158.203063.143920@e9g2000prf.googlegroups.com>
	<1192203158.119872.305750@e34g2000pro.googlegroups.com>
Message-ID: <13gvioups27u604@corp.supernews.com>

On 2007-10-12, Paul McGuire <ptmcg at austin.rr.com> wrote:

> I've been to Japan and Europe too, and I can't even figure out
> how many digits a phone number is supposed to have!

I was shocked at utterly foreign and lost I felt looking at
phone numbers in various places overseas.  I could deal with
phone numbers having other than 7/10 digits and being
punctuated differently, but in some places the number of digits
in a phone number is apparently random. Even among phone
numbers of the same length, the formatting (where the
spaces/hyphens) go, seems to be more-or-less random.

[Here in the US, a phone number is always the same length: 10
digits (though you only have to dial the first 3 if they're
different than your own).  Back in the pre-cellular days, given
just the first two digits of a phone number, you even knew
whether it was going to be all 10 digits or just 7.]

People speaking a different language was fine.  Driving on the
other side of the road was fine.  Colorful money with
rediculous exchange rates was fine.  Daytime being the wrong
length was definitely strange. But, phone numbers not having a
fixed length and format?  That's utter madness!

-- 
Grant Edwards                   grante             Yow! Oh my GOD -- the
                                  at               SUN just fell into YANKEE
                               visi.com            STADIUM!!


From grante at visi.com  Fri Oct  5 10:44:42 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 05 Oct 2007 14:44:42 -0000
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>
Message-ID: <13gcjeqbhmh152c@corp.supernews.com>

On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:

> I've just been told by the editors at Python Magazine that the first 
> issue is out.

The first issue is issue number 10?

That's a bit silly.

-- 
Grant Edwards                   grante             Yow! I can't decide which
                                  at               WRONG TURN to make first!!
                               visi.com            I wonder if BOB GUCCIONE
                                                   has these problems!


From rosmuthu at gmail.com  Tue Oct 30 09:03:53 2007
From: rosmuthu at gmail.com (rosmuthu at gmail.com)
Date: Tue, 30 Oct 2007 13:03:53 -0000
Subject: =?utf-8?B?26nbntup4LmR4paIIFRBTUlMICBTRVggIEZSRUUgIExJVkXguZHbqdue26nguZHilog=?=
Message-ID: <1193749433.534975.193590@i13g2000prf.googlegroups.com>

?????? TAMIL  SEX  FREE  LIVE??????

NOT    BIOTECHNOLOGEY ONLY  SEX

FREE  SEX  LIVE  SHOW  FREE

ROMANCE  SEX  LIVE  INDIAN  SEX


?????? TAMIL  SEX  FREE  LIVE??????



   http://TAMIL-GIRLS-SEX-STILL.notlong.com

From alexandre.badez at gmail.com  Tue Oct 16 04:08:26 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Tue, 16 Oct 2007 08:08:26 -0000
Subject: Automatically organize module imports
In-Reply-To: <ff1n3q$bl5$1@newsreader2.netcologne.de>
References: <mailman.34.1192475606.13605.python-list@python.org>
	<ff1n3q$bl5$1@newsreader2.netcologne.de>
Message-ID: <1192522106.394705.29570@v23g2000prn.googlegroups.com>

On Oct 16, 8:52 am, Thomas Wittek <m... at gedankenkonstrukt.de> wrote:
> Jean-Paul Calderone:
>
> > On Mon, 15 Oct 2007 20:52:11 +0200, Thomas Wittek
> > <m... at gedankenkonstrukt.de> wrote:
> >> Is there a tool that can organize my import section?
>
> > Pyflakes will tell you which imports aren't being used (among other
> > things).  I don't know if an existing tool which will automatically
> > rewrite your source, though.
>
> As Python itself complains about missing imports Pyflakes + Python
> should be a good team in cleaning up my imports.
> I'll give it a try. Thank you!
>
> --
> Thomas Wittek
> Web:http://gedankenkonstrukt.de/
> Jabber: streawkc... at jabber.i-pobox.net
> GPG: 0xF534E231

Hye,

If you're using Eclipse + PyDev, I strongly recommend you to give a
try to PyLint ("http://www.logilab.org/857").
It reintegrate quiet well with PyDev and Eclipse, and do as much as
Pyflakes (as far as I know)



From marlenemiller at worldnet.att.net  Wed Oct 10 00:46:39 2007
From: marlenemiller at worldnet.att.net (Marlene Miller)
Date: Wed, 10 Oct 2007 04:46:39 GMT
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<8IYOi.658994$p47.379449@bgtnsc04-news.ops.worldnet.att.net>
Message-ID: <POYOi.197605$ax1.117607@bgtnsc05-news.ops.worldnet.att.net>

Corrected the links...

1. Programming Languages: Application and Interpretation
Shriram Krishnamurthi
Part VII Continuations
http://www.cs.brown.edu/~sk/Publications/Books/ProgLangs/2007-04-26/plai-2007-04-26.pdf

2. Essentials of Programming Languages (2nd edition)
Friedman, Wand and Haynes
Chapter 7 Continuation-Passing Interpreters
Chapter 8 Continuation-Passing Style
http://www.cs.indiana.edu/eopl/

3. Theories of Programming Languages, John C. Reynolds
5.7 Continuation Semantics [of imperative languages]
Chapter 12 Continuations in a Functional Language
http://www.cs.cmu.edu/~jcr/tpl.html




From jcd at sdf.lonestar.org  Mon Oct  8 18:48:56 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Mon, 08 Oct 2007 18:48:56 -0400
Subject: pytz has so many timezones!
In-Reply-To: <3605cb0710081525m1b763701n58386e33df177b3d@mail.gmail.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>	<mailman.1678.1191866649.2658.python-list@python.org>	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>	<20071008202558.GB967@sdf.lonestar.org>
	<3605cb0710081525m1b763701n58386e33df177b3d@mail.gmail.com>
Message-ID: <470AB3D8.5050805@sdf.lonestar.org>

On 10/8/07, *J. Clifford Dyer* <jcd at sdf.lonestar.org
<mailto:jcd at sdf.lonestar.org>> wrote:

    On Mon, Oct 08, 2007 at 01:13:24PM -0700, mensanator at aol.com
    <mailto:mensanator at aol.com> wrote regarding Re: pytz has so many
    timezones!:
    >
    > On Oct 8, 1:03 pm, Carsten Haese < cars... at uniqsys.com
    <mailto:cars... at uniqsys.com>> wrote:
    > > On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com
    <mailto:mensana... at aol.com> wrote:
    > > > For example, Windows has seperate listings for
    > >
    > > > Central America
    > > > Central Time (US & Canada)
    > > > Guadalahara, Mexico City, Monterry - New
    > > > Guadalahara, Mexico City, Monterry - Old
    > > > Saskatchewan
    > >
    > > > but they are all GMT-6
    > >
    > > But they could have different rules for Daylight Saving Time.
    >
    > Which only matters if you're setting your clock.
    >

    Maybe this is where I'm not understanding you:  Do you have another
    use for setting a timezone?  The only thing a time zone does, as far
    as I can tell, is set clocks relative to a shared conception of time.


    --
    http://mail.python.org/mailman/listinfo/python-list





> How about a calendar entry: I've got six people in places all over the
> world to get on the phone together.  If the app doesn't know their
> notion of a time zone, that will never happen.
>
> How about financial transactions: time-stamping transactions that move
> around the world seems pretty useful to me.  How do I know when said
> transaction started if I can't convert the user's time into the
> server's time?
>
> Timezone is just another localization setting.  It is no different
> than language or keyboard layout.  It is a piece of data that
> describes the "world" the user lives in.  Unfortunately, DST makes
> them very complex because DST is determined by the country and can
> change from year to year.  I think the US' DST change this year had
> more of a real-world impact than Y2K (of course, people actually
> planned for Y2K, but that is a different story :).
>
> tj
>


OK.  Those all make sense, but I think they contradict mensanator's
statement that DST and half-hour offsets "only matter[] if you're
setting your clock."  None of those are meaningful with 25 generic time
zones, which was what I was trying to understand.  Under what normal
circumstances (outside of the US military creating an approximation for
their own internal usage) could 25 tzs be a useful abstraction?

Cheers,
Cliff



From paul.melis at gmail.com  Wed Oct 17 09:45:17 2007
From: paul.melis at gmail.com (Paul Melis)
Date: Wed, 17 Oct 2007 06:45:17 -0700
Subject: Static variable vs Class variable
In-Reply-To: <1192628506.149205.64040@z24g2000prh.googlegroups.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
	<5nmcuhFiva37U2@mid.uni-berlin.de>
	<Xns99CC8AF5E7617duncanbooth@127.0.0.1>
	<1192625870.815418.226970@e34g2000pro.googlegroups.com>
	<5nmggtFiva37U3@mid.uni-berlin.de>
	<1192628506.149205.64040@z24g2000prh.googlegroups.com>
Message-ID: <1192628717.343879.34980@e9g2000prf.googlegroups.com>

On Oct 17, 3:41 pm, Paul Melis <paul.me... at gmail.com> wrote:
> On Oct 17, 3:20 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
>
>
> > On Wed, 17 Oct 2007 05:57:50 -0700, Paul Melis wrote:
> > > On Oct 17, 2:39 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> > >> >>> class C(object):
>
> > >>         def setx(self, value):
> > >>                 if len(value)>2:
> > >>                         raise ValueError
> > >>                 self._x = value
> > >>         def getx(self):
> > >>                 return self._x
> > >>         x = property(getx, setx)
>
> > >> >>> o = C()
> > >> >>> o.x = []
> > >> >>> o.x += ['a']
> > >> >>> o.x += ['b']
> > >> >>> o.x += ['c']
>
> > >> Traceback (most recent call last):
> > >>   File "<pyshell#27>", line 1, in <module>
> > >>     o.x += ['c']
> > >>   File "<pyshell#22>", line 4, in setx
> > >>     raise ValueError
> > >> ValueError
>
> > >> >>> o.x
> > >> ['a', 'b', 'c']
>
> > > Now that's really interesting. I added a print "before" and print
> > > "after" statement just before and after the self._x = value and these
> > > *do not get called* after the exception is raised when the third
> > > element is added.
>
> > Well, of course not.  Did you really expect that!?  Why?
>
> Because o.x *is* updated, i.e. the net result of self._x = value is
> executed.

Argh, the getter is of course used to append the third element, after
which the rebinding triggers the exception. Got it now...

Paul



From rdm at rcblue.com  Fri Oct  5 04:31:47 2007
From: rdm at rcblue.com (Dick Moores)
Date: Fri, 05 Oct 2007 01:31:47 -0700
Subject: Where's the Starship's crew?
Message-ID: <20071005083806.61D811E4002@bag.python.org>

<http://starship.python.net/crew/index.html>

I didn't check on all of them, but the only one I found was Mark 
Hammond <http://starship.python.net/crew/mhammond/>.

Dick Moores



From python at hope.cz  Tue Oct 16 16:46:43 2007
From: python at hope.cz (Johny)
Date: Tue, 16 Oct 2007 13:46:43 -0700
Subject: How to find imported modules
Message-ID: <1192567603.939767.142850@y27g2000pre.googlegroups.com>

My Main program imports several other smaller programs.
for example
Main.py
imports
Program1.py
Program2.py
...
Program50.py

Now I need to find out which  of Programs imports a particular module
- module timesocket.py
Is that possible without opening each program?
Thanks
B.



From python.list at tim.thechases.com  Tue Oct 30 18:17:03 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 30 Oct 2007 17:17:03 -0500
Subject: Python Interview Questions
In-Reply-To: <1193776209.526442.141350@k79g2000hse.googlegroups.com>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>	<mailman.658.1193771958.13605.python-list@python.org>
	<1193776209.526442.141350@k79g2000hse.googlegroups.com>
Message-ID: <4727AD5F.1010508@tim.thechases.com>

>> Good luck with your interviewing and hope this helped,
>>
>> -tkc
> 
> Well, I was looking exactly for this. Many thanks to you Tim. After
> going through your list I came to know that I know nothing in Python
> and have to catch up a whole lot.

It was certainly not an exhaustive list of "you must know 
everything on this list or else you'd never get hired", or 
conversely, it's also not a "if you don't know everything on this 
list, you're not worthy to call yourself a Python programmer".

It's a way I've found to gauge what somebody means when they say 
the program in Python.  I've had the gamut of folks where that 
phrase means anything from "I glanced at some Python code once" 
to "I'm Guido" (okay, so that's a bit of hyperbole, but you get 
the idea).  My goal is to use as few questions as possible to 
flush out just what an interviewee mean by "I program in Python".

Hanging out here on the c.l.p list will introduce you to a lot of 
these ideas on the sly.  For my "basic" categories, 
lists/tuples/dicts/sets as well as list-comprehensions show up 
here regularly; I've answered several on basic file processing in 
the last day or two (iterate over a file object, doing something 
with each line); you see truth-testing regularly (and 
chastizement when folks do things like "if foo == True"); you see 
basic exception handling...all the basic stuff is regularly 
covered/used here.

Knowledge of the available system libraries comes with using them 
and having need for them.  I'm still learning it.  I finally 
tired of writing my own command-line parsers and investigated 
what the std. lib had to offer, only to find that optparse did 
everything I needed: cleanly, readably, and extensibly.  So now I 
use that instead.  That sort of experience only comes from time 
emersed in using Python to solve problems.

All that to say, don't sweat it too badly, and that fortunately 
Python is an easy language to work with.

-tkc








From besturk at gmail.com  Mon Oct 29 19:26:40 2007
From: besturk at gmail.com (Abandoned)
Date: Mon, 29 Oct 2007 16:26:40 -0700
Subject: interesting threading result..
In-Reply-To: <w9clal7c9atn.q1ro3zyvvbs4.dlg@40tude.net>
References: <1193674081.798831.24860@z9g2000hsf.googlegroups.com>
	<w9clal7c9atn.q1ro3zyvvbs4.dlg@40tude.net>
Message-ID: <1193700400.330157.115350@y42g2000hsy.googlegroups.com>

On Oct 29, 11:29 pm, Alan Franzoni
<alan.franzoni_inva... at geemail.invalid> wrote:
> Il Mon, 29 Oct 2007 09:08:01 -0700, Abandoned ha scritto:
>
> > I'm sorry my bad english.
> > King regards..
>
> You must have messed up with something. You didn't post a working snippet
> in first place, so you should do it now. I suppose you're working with some
> editor or IDE which mantains the very same instance of a python interpreter
> in memory; you probably have done something like
>
> end.append(current)
>
> at a certain point in your tests.
>
> I converted your pseudocode to python like that:
>
> import threading
>
> class GetData(threading.Thread):
>    def __init__(self, name):
>       threading.Thread.__init__(self)
>       self.name = name
>
>    def run(self):
>         self.data={2:3, 3:4}
>
> nlist = []
> current = GetData("a")
> nlist.append(current)
> current.start()
> end=[]
> dd=nlist[0]
> dd.join()
> result=dd.data
> print result
> end.append(result)
> print end
>
> and I just get the result I would expect:
>
> {2: 3, 3: 4}
> [{2: 3, 3: 4}]
>
> --
> Alan Franzoni <alan.franzoni.... at gmail.com>
> -
> Togli .xyz dalla mia email per contattarmi.
> Remove .xyz from my address in order to contact me.
> -
> GPG Key Fingerprint (Key ID = FE068F3E):
> 5C77 9DC3 BD5B 3A28 E7BC 921A 0255 42AA FE06 8F3E

Thanks you..
Now this is my real code and the problem  continue.
What is the mistake?

import threading


class GetData(threading.Thread):
   def __init__(self, name):
      threading.Thread.__init__(self)
      self.name = name


   def run(self):
        self.data={2:3, 3:4}


i=0
datas={"n": [['msn']]}
nglist=nlist={0: list()}
for x in query:
        tip=x
        for a in datas[x]:
                for o in a:
                        if len(o)>1:
                                current = GetData(o)
                                nglist[i].append(current)
                                current.start()

        i=i+1

for x in range(0,len(nglist)):
        for jk in range(0,len(nglist[x])):
                jkl=nglist[x][jk]
                jkl.join()
                sonuc=jkl.data
                nlist[x].append(sonuc)

print nlist
{0: [<GetData(Thread-1, stopped)>, {2: 3, 3: 4}]}



From python.list at tim.thechases.com  Wed Oct 24 12:32:18 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 24 Oct 2007 11:32:18 -0500
Subject: Anagrams
In-Reply-To: <1193242608.953442.217400@q3g2000prf.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>	<1193185723.647144.302410@i13g2000prf.googlegroups.com>	<1193241800.343932.23170@k35g2000prh.googlegroups.com>
	<1193242608.953442.217400@q3g2000prf.googlegroups.com>
Message-ID: <471F7392.4050104@tim.thechases.com>

>>  Is "all" inbuilt function in python? what it does?
> 
>>>> help(all)
> Help on built-in function all in module __builtin__:
> 
> all(...)
>     all(iterable) -> bool
> 
>     Return True if bool(x) is True for all values x in the iterable.

It may be helpful to know that any() and all() were added in 
Python 2.5

http://docs.python.org/lib/built-in-funcs.html#l2h-9

-tkc






From bj_666 at gmx.net  Wed Oct 17 16:36:15 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 17 Oct 2007 20:36:15 GMT
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
Message-ID: <5nna1vFiva37U5@mid.uni-berlin.de>

On Wed, 17 Oct 2007 20:27:14 +0000, Debajit Adhikary wrote:

> I have two lists:
> 
> a = [1, 2, 3]
> b = [4, 5, 6]
> 
> What I'd like to do is append all of the elements of b at the end of
> a, so that a looks like:
> 
> a = [1, 2, 3, 4, 5, 6]
> 
> I can do this using
> 
> map(a.append, b)

This is a bad idea as it creates a useless list of `None`\s, one for each
element in `b`.

> How do I do this using a list comprehension?

Not at all.  The obvious solution here is ``a.extend(b)``.

> (In general, is using a list comprehension preferable (or more
> "pythonic") as opposed to using map / filter etc.?)

Some say yes.

Ciao,
	Marc 'BlackJack' Rintsch


From sunburned.surveyor at gmail.com  Mon Oct 22 16:47:19 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: Mon, 22 Oct 2007 20:47:19 -0000
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471d06e2$0$12275$426a74cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
Message-ID: <1193086039.653037.246550@e9g2000prf.googlegroups.com>

On Oct 22, 1:23 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> Steven Bethard a ?crit :
> (snip)
>
> > In Python, you can use property() to make method calls look like
> > attribute access.  This could be necessary if you have an existing API
> > that used public attributes, but changes to your code require those
> > attributes to do additional calculations now.
>
> > But if you're creating a class for the first time, it should *never* use
> > property().  There's no need to retrofit anything.
>
> May I kindly disagree here ?-)
>
> Computed attributes are IMHO not only a life-saver when it comes to
> refactoring. There are cases where you *really* have - by 'design' I'd
> say - the semantic of a property, but know from the start you'll need
> computation (for whatever reason). Then what would be the rationale for
> using explicit getters/setters ?

Bruno,

Thanks for the detailed response. I need some time to digest what you
wrote. I will read this thread again and think carefully about what
you have saaid.

Scott Huey



From nagle at animats.com  Mon Oct  1 13:32:35 2007
From: nagle at animats.com (John Nagle)
Date: Mon, 01 Oct 2007 10:32:35 -0700
Subject: Python and SSL
In-Reply-To: <47012255.4020502@v.loewis.de>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
Message-ID: <xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>

Martin v. L?wis wrote:
>>> No, as Martin points out, Python trusts EVERY certificate, which of
>>> course misses the whole point of certificates.  Whatever is making
>>> your program fail is something different.
>> Paul, are you sure for 100%. It is hard to belive.
> 
> Not sure how many confirmations you want, but I can add another one.
> Paul is 100% correct. Python's SSL module, as shipped in Python 2.5.x
> and earlier, performs no verification of the server certificate
> whatsoever; it will silently accept any server certificate as correct.
> 
> Regards,
> Martin

      Actually, the SSL certificate has to be in valid format, because
OpenSSL does require that.  But there's no verification of the certificate
chain in Python's SSL module; it doesn't matter who signed it.  You can
create your own SSL certificates (there are tools for this) and Python's
SSL module will accept that.

      If you have a site that won't open with Python's stock SSL module,
try opening it with a browser.  If you get a warning message about the
certificate issuer not being validated, that's something Python will
ignore.  If you can't open the site with HTTPS at all, even after bypassing
warning messages, then the certificate at the other end may be nonexistent
or invalid.

				John Nagle


From mail at microcorp.co.za  Tue Oct 23 10:36:46 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Tue, 23 Oct 2007 16:36:46 +0200
Subject: Iteration for Factorials
References: <5o3jalFl0n43U1@mid.uni-berlin.de>	<1193056647.416562.36150@q3g2000prf.googlegroups.com>	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>	<1193057676.680959.71780@v23g2000prn.googlegroups.com>	<1193064348.526006.183080@q5g2000prf.googlegroups.com>	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it><mailman.332.1193067904.13605.python-list@python.org><Jb4Ti.72$BB6.22@tornado.fastwebnet.it><mailman.362.1193126604.13605.python-list@python.org>
	<13hrcfj1gtpia56@corp.supernews.com>
Message-ID: <00d701c81584$ea1b8e80$03000080@hendrik>

"Dennis Lee Bieber" <wlfraed at ix.netcom.com> wrote:

> >
> Heh... the one saving grace of taking a CS major in a period where
> the primary languages taught were FORTRAN (IV), COBOL (74), and
> something close to K&K BASIC. Heck, even the assembler class followed
> the FORTRAN parameter handling scheme (argument addresses copied to
> static locals and used via one level of indirection) -- It would take me
> some time, today, to figure out how to even create a "stack" (even the
> return address was passed via a reserved register and saved locally):
> 
> call,2 sub-address
> data arg1-address
> data arg2-address
> do-something
> .
> .
> .
> sub-address: store,2 my-return
> load,9 *my-return,1 ;indexed access
> store,9 param1
> load,9 *my-return,2
> store,9 param2
> do-stuff
> load,2 my-return
> addimmediate,2 2 ;number of args to
> adjust return
> return,2
> 
> (format:
> label command,register argument
> *argument ;indirection
> argument,x ;indexed )
> -- 

Yuk.  Reminds me of one of the Hitachi processors that
has a single depth hardware "link register" that tells a 
subroutine where it was called from.

I was thinking of a stack that grows when you call or push,
and shrinks when you return or pop.

When there are only 128 or so bytes, and an address is two bytes, 
recursive calling soon runs into trouble.  Especially so if you also 
use the stack to pass params... 

- Hendrik




From hniksic at xemacs.org  Tue Oct 30 05:04:54 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Tue, 30 Oct 2007 10:04:54 +0100
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
	<47260805$0$5155$426a34cc@news.free.fr>
	<87d4uxk08l.fsf@mulj.homelinux.net>
	<4726f139$0$11586$426a34cc@news.free.fr>
Message-ID: <87ve8pnfbd.fsf@mulj.homelinux.net>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
writes:

>> While Java's variable declarations bear a superficial (syntactical)
>> similarity to C, their semantics is in fact equivalent to the
>> object-reference semantics we know in Python.   They implicitly refer
>> to objects allocated on the heap and, just like in Python, the same
>> object can be referenced by multiple variables. 
>
> You're talking about reference types here - not primitive types. And
> even then, from what I remember (not having done any Java these last
> 4 years at least), Java's reference types are much closer to C++
> references than to Python.

Feel free to look it up; I believe you will find the semantics of
assignment, parameter-passing, etc., exactly the same as in Python.

>> Variables holding primitive types don't really influence the
>> variable/object relationship, since the values they hold are by
>> nature immutable and without identity.
>
> Python's immutable types instances does have an identity,

Just to clarify, here I was talking about Java's primitive-typed
variables, not drawing a parallel between Java and Python in that
area.


From ptmcg at austin.rr.com  Tue Oct 16 08:27:47 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 16 Oct 2007 05:27:47 -0700
Subject: easy but difficult
In-Reply-To: <mailman.56.1192531337.13605.python-list@python.org>
References: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
	<mailman.56.1192531337.13605.python-list@python.org>
Message-ID: <1192537667.349556.154190@v23g2000prn.googlegroups.com>

On Oct 16, 5:42 am, "Francesco Guerrieri" <f.guerri... at gmail.com>
wrote:
> On 10/16/07, Beema shafreen <beema.shafr... at gmail.com> wrote:
>
>
>
>
>
> > hi everybody,
> >   I have  a file  separated by hash:
> > as shown below,
> > file:
> > A#1
> > B#2
> > A#2
> > A#3
> > B#3
>
> > I need the result like this:
> > A 1#2#3
> > B 2#3
>
> > how will generate the result like this from the above file
> > can somebody tell me what i have to do......
> > My code:
> >           fh =open('abc_file','r')
> >           for line in fh.readlines():
> >                    data = line.strip().split('#')
> >                     for data[0] in line
> >                             print line
>
> > I tried but i donot know how to create 1#2#3 in a single line
> > regards
>
> This certainly seems to be a homework assignment :)
> You could try if dictionaries or their variants.
> There is an example very similar example to the task you are trying to
> solve in the documentation available online on the site
> docs.python.org
>
> francesco- Hide quoted text -
>
> - Show quoted text -

Even if it is homework, I think this is a good post:
- the OP posted his code that he had written so far
- the OP asked a specific question (how to write "1#2#3"), not just
"help! it wont work! fix it for me!"

To the OP:
If you can get your data into a list of values, ['1', '2', '3'], then
use the join method to join them together with a separator string:

print "#".join(['1', '2', '3'])

gives:

1#2#3

-- Paul



From kyosohma at gmail.com  Tue Oct  2 09:38:18 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 02 Oct 2007 13:38:18 -0000
Subject: file open dialog from within PythonWin
In-Reply-To: <1191329783.509586.159380@d55g2000hsg.googlegroups.com>
References: <1191329783.509586.159380@d55g2000hsg.googlegroups.com>
Message-ID: <1191332298.539077.122340@k79g2000hse.googlegroups.com>

On Oct 2, 7:56 am, aine_ca... at yahoo.com wrote:
> Hi,
>
> I want to open a file seach dialog from within my python script which
> I run from within PythonWin. I also have the wxPython package
> installed.
>
> How might I do this?
>
> Thanks,
>
> Aine

Aine,

I recommend downloading the wxPython Demo as it shows how to do most
common tasks and a lot of other cool things as well. It includes code
for common dialogs, such as the FileDialog, which is what I think you
want. The man page for this widget is below:

http://www.wxpython.org/docs/api/wx.FileDialog-class.html

You can find the Demo here: http://www.wxpython.org/download.php

Mike



From nytrokiss at gmail.com  Sun Oct  7 16:02:50 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Sun, 7 Oct 2007 13:02:50 -0700
Subject: Off Topic: Gmail hates newsgroups!!!
In-Reply-To: <59f9c5160710041217t6adbd110jd2504ea8c01a308d@mail.gmail.com>
References: <496954360710041211x696ebebdj3105e4271372c332@mail.gmail.com>
	<59f9c5160710041217t6adbd110jd2504ea8c01a308d@mail.gmail.com>
Message-ID: <8a6b8e350710071302w51568137r1e5efb7ad8418ba4@mail.gmail.com>

I agree it annoys me also!


-- 
http://search.goldwatches.com/search.aspx?Search=Cufflinks
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/3f26ff9e/attachment.html>

From informfr at gmail.com  Thu Oct  4 11:51:28 2007
From: informfr at gmail.com (JL)
Date: Thu, 04 Oct 2007 15:51:28 -0000
Subject: pickle and __slots__
Message-ID: <1191513088.578638.90270@d55g2000hsg.googlegroups.com>

Hello,

I am trying to pickle an object, and I get:

TypeError: a class that defines __slots__ without defining
__getstate__ cannot be pickled

I didn't find __slots__ in the object or the class. Is there a way to
find it, or to to know which object or class causes the problem?

Thanks



From Ae at tx.rr.com  Thu Oct 11 22:14:56 2007
From: Ae at tx.rr.com (Audio expert)
Date: Thu, 11 Oct 2007 21:14:56 -0500
Subject: Top 10 Caribbean island destinations
References: <1192137188.121863.212020@19g2000hsx.googlegroups.com>
Message-ID: <470ed8b0$0$24257$4c368faf@roadrunner.com>

Now I know where NOT to go.
TOO crowded for me.


<arturklis4 at gmail.com> wrote in message 
news:1192137188.121863.212020 at 19g2000hsx.googlegroups.com...
> See the most popular Caribbean island destinations
>
> http://tropical-destinations.blogspot.com/
> 




From deets at nospam.web.de  Thu Oct 11 08:18:35 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 14:18:35 +0200
Subject: Accessing Function Variables from Sub-functions
References: <1192097504.394834.184930@o3g2000hsb.googlegroups.com>
Message-ID: <5n6ikrFgins4U1@mid.uni-berlin.de>

Licheng Fang wrote:

> On Apr 14 2003, 10:30 pm, Alex Martelli <al... at aleax.it> wrote:
>> Sebastian Wilhelmi wrote:
>> > Hi,
>>
>> > I would like to do the following:
>>
>> > -------8<-------8<-------8<-------8<-------
>> > def test ():
>> >     count = 0
>> >     def inc_count ():
>> >         count += 1
>> >     inc_count ()
>> >     inc_count ()
>> >     print count
>>
>> > test ()
>> > -------8<-------8<-------8<-------8<-------
>>
>> > This doesn't work (and I even understand, why ;-)
>>
>> Specifically: a nested function cannot *RE-BIND* a variable of
>> an outer function.
>>
> 
> Sorry to dig up this old thread, but I would like to know what's the
> rationale is. Why can't a nested function rebind a variable of an
> outer function?

Because the lack of variable declarations in python makes the
left-hand-side-appearance of a variable the exact distinction criteria
between inner and outer scopes. Thus it can't rebind them. What you can do
is to use mutables as container for outer variables:


def outer():
    v =[1]
    def increment():
        a = v[0]
        a += 1
        v[0] = a
    increment()
    print v[0]


Diez


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 08:36:03 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 14:36:03 +0200
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <mailman.1636.1191758480.2658.python-list@python.org>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>	<fe7otk$21a$1@newsreader2.netcologne.de>	<1i5kbfo.xq3fut1f7ouujN%raims@dot.com>	<kh7kt4-v7q.ln1@strongwill.g2ctech>	<1i5kk06.enf7ws1juj4zkN%raims@dot.com>
	<mailman.1636.1191758480.2658.python-list@python.org>
Message-ID: <4708d28f$0$21569$426a34cc@news.free.fr>

Steve Holden a ?crit :
> Lawrence Oluyede wrote:
(snip)
>> We (Michele, myself and our colleagues) have a series of stuff we need
>> to stick to so the choosing of a web framework ain't that easy. Most of
>> the frameworks are a vision of the author of how to do things from
>> scratch but a framework (by definition an evolution of a library) is not
>> always meant to be used when the scratch is far from your starting
>> point.
>>
> Porting existing web applications to new architectures requires more 
> than just transliteration, since you lose some metaphors available only 
> in the donor system and may therefore need to take advantage of new 
> idioms in the new environment to compensate.
> 
> I spent some time trying to re-architect the code from "Python Web 
> Programming" in TurboGears. That was difficult not because TG is a bad 
> system but because there was an impedance mismatch between the original 
> code's framework and the way TG does things.
> 
> I guess I would have similar problems with Django.

Indeed. But AFAICT, Lawrence and Michele problems is not to port an 
existing web application, but to choose a web framework that will play 
well with their existing *system* (RDBMS, existing apps and libs etc). 
Which is quite another problem, and may eliminate some otherwise pretty 
good frameworks for compatibility reasons (DBMS support and other issues).

(please Michele or Lawrence correct me if I'm wrong...)


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Oct 11 12:15:54 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 11 Oct 2007 18:15:54 +0200
Subject: I'm starting to think like a Pythonista
References: <fejah0$lkk$1@solaris.cc.vt.edu>
	<5n4sqoFg4bs3U1@mid.individual.net>
	<fejeni$qte$2@solaris.cc.vt.edu>
Message-ID: <5n70hqFgjdo3U1@mid.individual.net>

brad wrote:
> Bjoern Schliessmann wrote:

>> Why use xrange if you convert it to a full list in place? No
>> advantage there.
> 
> What is the dis-advantage of using xrange over range in this
> circumstance?

Hardly any, but honestly: Converting it to a list manually is more
than superfluous.

Regards,


Bj?rn

-- 
BOFH excuse #284:

Electrons on a bender



From hniksic at xemacs.org  Mon Oct 29 07:53:12 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 29 Oct 2007 12:53:12 +0100
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
Message-ID: <874pga3zo7.fsf@mulj.homelinux.net>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
writes:

>> As others have answered, an instance can live in many variables,
>
> "be bound to many names" would be more accurate IMHO.

Technically more accurate maybe (but see below), but I was responding
to a beginner's post, so I was striving for ease of understanding.

> Python's "variables" are name=>object bindings.

No reason to use quotes.  Variable is just as acceptable a term, one
used by Python itself, as witnessed by the "vars" builtin, but also in
PEP 8, in the language reference, and elsewhere in the docs.  Even the
quite technical language reference uses both terms, such as in this
paragraph under "Naming and binding":

    If a name is bound in a block, it is a local variable of that
    block. If a name is bound at the module level, it is a global
    variable. (The variables of the module code block are local and
    global.) If a variable is used in a code block but not defined
    there, it is a free variable.

I disagree with the idea that the terms "name" and "binding" are the
only correct terminology.  Python is not the first language to offer
pass-by-object-reference assignment semantics.  It shares it with
Lisp, Java, and many others, none of which have problems with the term
"variable".


From tim.arnold at sas.com  Thu Oct 18 14:56:39 2007
From: tim.arnold at sas.com (Tim Arnold)
Date: Thu, 18 Oct 2007 14:56:39 -0400
Subject: image resize question
Message-ID: <ff8a9a$i5d$1@foggy.unx.sas.com>

Hi, I'm using the Image module to resize PNG images from 300 to 100dpi for 
use in HTML pages, but I'm losing some vertical and horizontal lines in the 
images (usually images of x-y plots).

Here's what I do:
import Image
def imgResize(self,filename):
        img = Image.open(filename)
        dpi = img.info.get('dpi')
        if dpi and 295 < int(dpi[0]) < 305:
            wd = img.size[0]/3.0 #convert from 300dpi to 100dpi
            ht = img.size[1]/3.0
            newimg= img.resize((int(wd),int(ht)))
            newimg.save(filename)

imgResize('myimage.png')

Can someone point me to a better way so I don't lose the reference lines in 
the images?
thanks,
--Tim Arnold




From lhb at nowhere.com  Sun Oct  7 09:07:16 2007
From: lhb at nowhere.com (lhb at nowhere.com)
Date: Sun, 07 Oct 2007 13:07:16 GMT
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <Xns99C252D1319CElhb123@140.99.99.130>

Wildemar Wildenburger <lasses_weil at klapptsowieso.net> wrote in 
news:47016899$0$4524$9b4e6d93 at newsspool3.arcor-online.net:

> While I agree that the word "free" implies "free of monetary cost" to 
> many people societies, that is by no means set in stone (talk to native 
> americans, blacks, jews, palestinians, etc. about the word free, see 
> what they have to say).

Words are defined by popular usage.  In popular usage, the meaning of free 
as an adjective depends on the context.  If the adjective is applied to 
people, it means the opposite of slavery or imprisonment.  If it's applied 
to something other than people, it means free as in beer.

For example, a dog with no owner, wandering freely (adverb), would not be 
called a free dog (adjective), to mean possessing freedom.  Free dog means 
free as in beer.  Likewise, in popular usage, free software means free as 
in beer.  People who use it with a different meaning are vainly trying to 
change its meaning.  But the meanings of words can't be arbitrarily 
changed, just by dictating different meanings.  The meaning has to be 
adopted by popular usage, which free-as-in-GPL software has not been.

Therefore, I propose, using dog freedom as our logic, we call it stray 
software.


From mail at timgolden.me.uk  Thu Oct 11 11:03:25 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Thu, 11 Oct 2007 16:03:25 +0100
Subject: Script to Remove Attachments in Exchange Mailbox
In-Reply-To: <1192110265.529187.48770@y42g2000hsy.googlegroups.com>
References: <1192110265.529187.48770@y42g2000hsy.googlegroups.com>
Message-ID: <470E3B3D.90206@timgolden.me.uk>

KDawg44 wrote:
> Hi,
> 
> I am frustrated with my users who send large files around the office
> instead of using the network shares.

[...]

> Which means that there are 8 copies of the same file 4MB taking up
> space, or a 4MB file turned into a 32MB file."
> 
> So, what I would like, is to write a script that parses the exchange
> mailbox, and removes all attachments over a certain size (say 500K)
> that are attached to messages that are more than 2 weeks old, or that
> are in sent items.  I would like to write to a log file all the
> changes that are made then email that log file to the mailbox that was
> just trimmed.

I have something v. similar, only it's at work and I'm not. Maybe tomorrow.
What it does -- I think, it's been a while -- is to rip through any
mailboxes finding attachments over a certain size, saving them to some
kind of folder structure on the user's home drive and replacing the
attachment by a link to the attachment. I have another script which,
independently, rips through users' home shares finding duplicates and
linking them to one copy.

It's a while since they were last run to they're probably quite
dusty but it sounds like the kind of thing you're after.

TJG


From john.bradbury at smartemail.co.uk  Sat Oct 27 18:43:21 2007
From: john.bradbury at smartemail.co.uk (johnbraduk)
Date: Sat, 27 Oct 2007 15:43:21 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <fe7otk$21a$1@newsreader2.netcologne.de>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
Message-ID: <1193525001.849364.301510@19g2000hsx.googlegroups.com>

Thomas,
Like many others I have been going round the same loop for months.

I have struggled with most of the Python solutions, including
TurboGears and have given up and gone back to ColdFusion.  I am not
trying to kick of a religious war about the pros and cons of
ColdFusion as a scripting langauge, but IMHO, as a development
environment (Dreamweaver), it is unbeatable. In one product, "out of
the box" I can integrate database access and web design, including
AJAX, in one GUI IDE.  Ok, the IDE is on Windows, but the servers run
on Linux.

This seems to be an aspect of web design that has been totally
ignored in the Python community. Developers have been falling over
each other to come up with yet another web development framework
( about 15 at the last count!), but they are all a collection of bits
and pieces from all over the place.  Turbogears is attempting to pull
it all together, but that is like trying to hit a moving target.  As
soon as you get something working they move to a different level of
one of the components and it all falls apart.  For example, you might
try widgets and get them working with Kid Templates.  Then you read
that they want you to move to Genshi Templates and after wasting
hours, you find the small print and discover you need different
widgets to work with Genshi.  Some may think it is a strength of
Python to have so many options, but I think it is a weakness and
putting people off using Python for Web development, driving them to
products like PHP, Rails or ColdFusion.  When I develop a web
application, I don't want to have to decide whether to use mod-python,
Cherrypy, Django, Pylons... for my server.  Then I have to decide
whether to access my database with basic SQL or learn the quirky
options available with SQLObjects or SQLAlchemy, with or without,
Elixir.  Finally, I have to decide which of umpteen templating systems
to use and hope that it will work with the rest of the components.

Am I asking too much to have a Python product "X" which is a fully
self-contained web development framework?
John B

On 6 Oct, 11:44, Thomas Wittek <m... at gedankenkonstrukt.de> wrote:
> Michele Simionato:
>
> > At work we are shopping for a Web framework, so I have been looking at
> > the available options
> > on the current market.
>
> At least, you missed Turbo Gears :)http://turbogears.org/
> For me, it feels more integrated than Pylons.
>
> --
> Thomas Wittek
> Web:http://gedankenkonstrukt.de/
> Jabber: streawkc... at jabber.i-pobox.net
> GPG: 0xF534E231




From hniksic at xemacs.org  Wed Oct  3 15:08:41 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 03 Oct 2007 21:08:41 +0200
Subject: enumerate overflow
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
	<mailman.1448.1191418743.2658.python-list@python.org>
	<7xmyv0nn7f.fsf@ruckus.brouhaha.com>
	<1191432123.619871.226360@g4g2000hsf.googlegroups.com>
Message-ID: <87ve9oj9s6.fsf@mulj.homelinux.net>

Raymond Hettinger <python at rcn.com> writes:

> [Paul Rubin]
>> I hope in 3.0 there's a real fix, i.e. the count should promote to
>> long.
>
> In Py2.6, I will mostly likely put in an automatic promotion to long
> for both enumerate() and count().  It took a while to figure-out how
> to do this without killing the performance for normal cases (ones
> used in real programs, not examples contrived to say, "omg, see what
> *could* happen").

Using PY_LONG_LONG for the counter, and PyLong_FromLongLong to create
the Python number should work well for huge sequences without
(visibly) slowing down the normal case.


From stargaming at gmail.com  Sat Oct 20 01:40:10 2007
From: stargaming at gmail.com (Stargaming)
Date: 20 Oct 2007 05:40:10 GMT
Subject: C++ version of the C Python API?
References: <mailman.230.1192833455.13605.python-list@python.org>
Message-ID: <471994ba$0$18188$9b622d9e@news.freenet.de>

On Fri, 19 Oct 2007 17:37:29 -0500, Robert Dailey wrote:

> Hi,
> 
> Is there a C++ version of the C Python API packaged with python 2.5? It
> would be nice to have a OOP approach to embedding python in C++. It
> would also be a bonus if this C++ Python API cleaned up a lot of the
> messy code involved in embedding python.
> 
> Thanks.

Perhaps, the remark about `C++ extensions`_ or `Embedding in C++`_ in the 
`Extending and Embedding`_ docs (described on doc.python.org as a 
"tutorial for C/C++ programmers") can help.

Depending on your level of embedding, those random annotations spread 
over the extending docs, found with a little patience and ctrl+f, might 
help:

  * "In C++, the operators new and delete are used with essentially the 
same meaning and we'll restrict the following discussion to the C case." 
-- `1.10 Reference counts <http://docs.python.org/ext/refcounts.html>`_
  * "Note that PyMODINIT_FUNC declares the function as void return type, 
declares any special linkage declarations required by the platform, and 
for C++ declares the function as extern "C"." -- `1.4 The Module's Method 
Table and Initialization Function <http://docs.python.org/ext/
methodTable.html>`_

Cheers,
Stargaming

.. _C++ extensions: http://docs.python.org/ext/cplusplus.html
.. _Embedding in C++: http://docs.python.org/ext/embeddingInCplusplus.html
.. _Extending and embedding: http://docs.python.org/ext/ext.html


From aleax at mac.com  Sat Oct 13 19:14:56 2007
From: aleax at mac.com (Alex Martelli)
Date: Sat, 13 Oct 2007 16:14:56 -0700
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<1191931524.047907.98040@v3g2000hsg.googlegroups.com>
Message-ID: <1i5xivs.9kwhkc6b6o00N%aleax@mac.com>

Matthias Benkard <mulkiatsch at gmail.com> wrote:

> continuations.  There used to be a project called Stackless Python that
> tried to add continuations to Python, but as far as I know, it has always
> been separate from the official Python interpreter.  I don't know whether
> it's still alive.  You may want to check http://stackless.com/

Alive and well, but it has removed continuations (which were indeed in
early versions, as per the paper at
<http://www.stackless.com/spcpaper.htm>).


Alex


From mccredie at gmail.com  Thu Oct 11 13:26:21 2007
From: mccredie at gmail.com (Matimus)
Date: Thu, 11 Oct 2007 17:26:21 -0000
Subject: Finding Peoples' Names in Files
In-Reply-To: <1192122174.084193.298950@v3g2000hsg.googlegroups.com>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>
	<felhv8$18g$1@solaris.cc.vt.edu>
	<1192121372.931784.171120@d55g2000hsg.googlegroups.com>
	<1192122174.084193.298950@v3g2000hsg.googlegroups.com>
Message-ID: <1192123581.469814.107300@19g2000hsx.googlegroups.com>

On Oct 11, 10:02 am, byte8b... at gmail.com wrote:
> On Oct 11, 12:49 pm, Matimus <mccre... at gmail.com> wrote:
>
>
>
> > On Oct 11, 9:11 am, brad <byte8b... at gmail.com> wrote:
>
> > > cokofree... at gmail.com wrote:
> > > > However...how can you know it is a name...
>
> > > OK, I admitted in my first post that it was a crazy question, but if one
> > > could find an answer, one would be onto something. Maybe it's not a 100%
> > > answerable question, but I would guess that it is an 80% answerable
> > > question... I just don't know how... yet :)
>
> > > Besides admitting that it's a crazy question, I should stop and explain
> > > how it would be useful to me at least. Is a credit card number itself
> > > valuable? I would think not. One can easily re and luhn check for credit
> > > card numbers located in files with a great degree of accuracy, but a
> > > number without a name is not very useful to me. So, if one could
> > > associate names to luhn checked numbers automatically, then one would be
> > > onto something. Or at least say, "hey, this file has luhn validated CCs
> > > *AND* it seems to have people's names in it as well." Now then, I'd have
> > > less to review or perhaps as much as I have now, but I could push the
> > > files with numbers and names to the top of the list so that they would
> > > be reviewed first.
>
> > > Brad
>
> > What the hell are you doing? Your post sounds to me like you have a
> > huge amount of stolen, or at the very least misapprehended, data. Now
> > you want to search it for credit card numbers and names so that you
> > can use them.
>
> > I am not cool with this! This is a public forum about a programming
> > language. What makes you think that anybody in this forum will be cool
> > with that. Perhaps you aren't doing anything illegal, but it sure is
> > coming off that way. If you are doing something illegal I hope you get
> > caught.
>
> > At the very least, you might want to clarify why you are looking for
> > such capability so that you don't get effectively black-listed (well,
> > by me at least).
>
> > Matt
>
> Go have a beer and calm down a bit :) It's a legitimate purpose,
> although it could (and probably is being used by bad guys right now).
> My intent, as you can see from the links below, is to catch it before
> the bad guys do.
>
> http://filebox.vt.edu/users/rtilley/public/find_ccns/http://filebox.vt.edu/users/rtilley/public/find_ssns/
>
> Brad

Its just past 10:00 am where I am... I know customs vary, but
generally beer before lunch is frowned upon :). I know the tone of
posts does not carry well over the web, but I was really just trying
to point out that your previous post sounded very shady, and at the
very least some clarification was in order. I wasn't standing on my
desk frothing at the mouth or anything.

On to my suggestion. I think you are going to have to use statistical
analysis. That is, you won't get something that reliably returns a
boolean, but maybe something that says there is a 75% chance that
there are names in a given file. You can't know that a given string is
or isn't a name, you can only know that it is probably a name based
upon how often it is used in that context. Either way this isn't a
simple problem to solve, and it probably involves creating a database
of words that shows what percentage of the time they are used as
names. How such a database is created... that is the hard part. There
may be tools out there for such analasys, but that isn't an area I
have any experience in.

Matt



From jstroud at mbi.ucla.edu  Fri Oct 12 19:55:05 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 12 Oct 2007 16:55:05 -0700
Subject: Observer implementation question ('Patterns in Python')
In-Reply-To: <1192226868.588324.253790@y27g2000pre.googlegroups.com>
References: <1192226868.588324.253790@y27g2000pre.googlegroups.com>
Message-ID: <fep1ev$k57$1@daisy.noc.ucla.edu>

Anders Dahnielson wrote:
> Sorry if this is a somewhat silly question...
> 
> I'm using the Observer implementation found in 'Patterns in
> Python' [1] and find it really neat. But, I have not yet fully groked
> the new-style class, classic class and property differences involved.
> So can somebody please explain to me why this works (using a classic
> class):
> 
>         class C:
>             TheEvent = Event()
>             def OnTheEvent(self):
>                 self.TheEvent(self, context)
> 
>         instance = C()
>         instance.TheEvent += callback
>         instance.OnTheEvent()
>         instance.TheEvent -= callback
> 
> While this do not (using new-style class):
> 
>         class C(object):
>             TheEvent = Event()
>             def OnTheEvent(self):
>                 self.TheEvent(self, context)
> 
>         instance = C()
>         instance.TheEvent += callback
>         instance.OnTheEvent()
>         instance.TheEvent -= callback
> 
> Raising an AttributeError :
> 
>         Traceback (most recent call last):
>           File "sig_test.py", line 7, in ?
>              instance.TheEvent += callback
>         AttributeError: can't set attribute
> 
> So far I've figured out that it is the Event class (subclassing the
> built-in property type) that is the culprit, but not why. (See
> 'Patterns in Python' [1] for code listing of the Event class.)
> 
> I would be grateful if some helpful soul could explain it.
> 
> [1] http://www.suttoncourtenay.org.uk/duncan/accu/pythonpatterns.html#observer
> 

This is because the object derived class C is behaving properly with 
respect to its property attributes. __iadd__() is supposed to set the 
attribute, but no setter is called because the property (an Event()) 
does not have a setter defined. The most straightforward fix would not 
be to define a setter in construction of Event instances, but would 
rather to come up with some other way than __iadd__ to specify changing 
the state of the delegates:

    # was __iadd__()
    def append(self, callback):
         self.__delegates = [ cb
             for cb in self.__delegates
                 if getattr(cb, 'im_self', None) != callback]
         # If callback is callable, remove the last
         # matching callback
         if callable(callback):
             for i in range(len(self.__delegates)-1, -1, -1):
                 if self.__delegates[i] == callback:
                     del self.__delegates[i]
                     break

  [...]

    d.append(function)

The use of __iadd__ & __isub__ as described in the article allows a neat 
shorthand, but does not function correctly in the context of new style 
classes.

James

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

http://www.jamesstroud.com


From deets at nospam.web.de  Mon Oct  1 13:18:32 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 01 Oct 2007 19:18:32 +0200
Subject: Select as dictionary...
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
	<47010e97$0$7777$426a74cc@news.free.fr>
	<1191258548.820547.123560@k79g2000hse.googlegroups.com>
	<1191258828.206660.21570@22g2000hsm.googlegroups.com>
Message-ID: <5mcof8Fcsvl9U1@mid.uni-berlin.de>

Abandoned wrote:

> Also if i need a list id what can i do ?
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> 
> I want to..
> 
> idlist=[1, 2, 3] ( I don't want to use FOR and APPEND because the
> query have 2 million result and i want to speed)

It will always return a list of tuples, so even if you'd do


select  id from list


you'd end up with

[(1,), ...]

But you shouldn't bother - a simple

idlist = [v[0] for v in links]

should do it. Because this program shows that it takes only a split-second
to process 2 million list-entries and create a new one:

import time

two_million = range(2000000)

start = time.time()
[i * 2 for i in two_million]

used = time.time() - start

print used


Need 0.8 seconds on my machine. So - don't bother.

Diez


From cokofreedom at gmail.com  Wed Oct 17 10:10:27 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Wed, 17 Oct 2007 14:10:27 -0000
Subject: Order by value in dictionary
In-Reply-To: <5nmj7sFiouurU3@mid.uni-berlin.de>
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
	<5nmj7sFiouurU3@mid.uni-berlin.de>
Message-ID: <1192630227.038958.146760@i13g2000prf.googlegroups.com>

On Oct 17, 4:06 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Diez B. Roggisch wrote:
> > Abandoned wrote:
>
> >> Hi..
> >> I have a dictionary like these:
> >> a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
> >> element
> >> I want to sort this by value and i want to first 100 element..
> >> Result must be:
> >> [b, a, d, c .....] ( first 100 element)
>
> >> I done this using FOR and ITERATOR but it tooks 1 second and this is
> >> very big time to my project.
> >> I want to learn the fastest method..
>
> > That is the fastest method, unless you write your own ordered dict
> > implementation that sorts by value. But that will most probably lose the
> > time when holding up the invariant when inserting key/values into the
> > dictionary.
>
> Actually, I somehow read the FOR and ITERATOR above as something like this:
>
> entries = sorted(a.items(), key=lambda v: v[1])[:100]
>
> The gist of my statement above is nontheless the same: if you want sorted
> results, you need to sort...
>
> Diez

Agreed, and it seems using the inbuilt sorts is the most efficient
way...



From __peter__ at web.de  Tue Oct 16 05:47:50 2007
From: __peter__ at web.de (Peter Otten)
Date: Tue, 16 Oct 2007 11:47:50 +0200
Subject: extension to list extend
References: <xD%Qi.8447$6p6.3929@newssvr25.news.prodigy.net>
Message-ID: <ff21c5$k8g$01$1@news.t-online.com>

James Stroud wrote:

> Found that this would be handy today:
> 
>    alist = [1, 2, 3]
>    alist.extend(['a', 'b', 'c'], 1)
>    alist == [1, 'a', 'b', 'c', 2, 3]  # True

A better name for that would be insert(), but that is already used for
single-item insertion. For the time being you can do

>>> items = [1, 2, 3]
>>> items[1:1] = "abc"
>>> items
[1, 'a', 'b', 'c', 2, 3]

Peter


From gherzig at fmed.uba.ar  Wed Oct  3 21:28:57 2007
From: gherzig at fmed.uba.ar (gherzig at fmed.uba.ar)
Date: Wed, 3 Oct 2007 22:28:57 -0300 (ART)
Subject: migrating to packages
In-Reply-To: <27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
Message-ID: <4417.190.55.67.65.1191461337.squirrel@www.webmail.fmed.uba.ar>

>
> On Oct 3, 2007, at 11:42 AM, Gerardo Herzig wrote:
>
>> Hi all. I have a single file with several classes, wich i want to
>> separate into several packages.
>> The big file is named, say MYCLASES, and contains a class named
>> A(object), and B(A).
>>
>> We have been using this MYCLASES in the
>> from MYCLASES import B syntax, but i cant reproduce this syntax using
>> packages. Im forced to write from PACKAGE.B import *, and if that
>> means
>> i have to touch so many files, that would really be a problem to me.
>> There is (i cant find it yet) a place where i can read about that kind
>> of package 'migration' situation?
>>
>> Because i *really* want to keep the FROM PACKAGE import B syntax.
>
> http://www.python.org/doc/current/tut/
> node8.html#SECTION008400000000000000000
I have already read those files (and i just read it again), but still cant
find the solution. Maybe i just do not explain myself in the correct way
(or  i am very very stupid :)
I will expose my case quicly.
The MYCLASES.py file contains the A class, so i can use
from MYCLASES import A
a = ()

Using the "package mode" (wich looks fine BTW), having the simple
MYCLASES/
     __init__.py
     A.py

forces my (i guess) to use the
from MYCLASES.A import A

which is not what i want, because the big amount of files i will have to
modify (and im not alones, there is a group of dudes who use this
MYCLASES)

Im i missing something in that docs you post?
Thanks!!

Gerardo



From mahs at telcopartners.com  Mon Oct  8 20:20:50 2007
From: mahs at telcopartners.com (Michael Spencer)
Date: Mon, 08 Oct 2007 17:20:50 -0700
Subject: Convert obejct string repr to actual object
In-Reply-To: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>
References: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>
Message-ID: <feehh4$313$1@sea.gmane.org>

Tor Erik S?nvisen wrote:
> Hi,
> 
> I've tried locating some code that can recreate an object from it's
> string representation...
> The object in question is really a dictionary containing other
> dictionaries, lists, unicode strings, floats, ints, None, and
> booleans.
> 
> I don't want to use eval, since I can't trust the source sending the
> object.... I'm sure someone must have had the same need and created
> code for it... Maybe Pypy has what I need??? Haven't looked though...
> 
> Regards,
> Tor Erik
> 
> PS: The string repr is created by a server outside of my control...

This recipe should get you most of what you need:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/364469

HTH

Michael



From bj_666 at gmx.net  Tue Oct 16 09:52:54 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 13:52:54 GMT
Subject: ctypes & Wrapping Complex Datatypes
References: <1192536861.684885.16140@q3g2000prf.googlegroups.com>
Message-ID: <5nju1mFiilfrU5@mid.uni-berlin.de>

On Tue, 16 Oct 2007 06:47:06 -0700, gamename wrote:

> I've just started using ctypes and so far, its great.  But I'm running
> to some problems with complex datatypes.  I'm not sure how to wrap
> something like this:
> 
>    /* This defines the Handle type in a header file.  I don't think
> this needs wrapping, its just to show the handle definition for
> context*/
>     typedef struct DFFTSHandle_s *DFFTSHANDLE;
> ...
>   /* Then, the handle is used like this later on.  This *is* what I
> want to wrap.*/
>     status = DFFTSCreateSession(&Handle);
>     status = DFFTSSetSessionOption(Handle, DFFTSOPT_ITERATIONS,
> &iteration, sizeof(iteration));

If this "handle" is always just treated as a pointer to an opaque data
structure you may just use a void pointer.

Ciao,
	Marc 'BlackJack' Rintsch


From carsten at uniqsys.com  Thu Oct 11 12:04:01 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Thu, 11 Oct 2007 12:04:01 -0400
Subject: Problems with struct.pack()
In-Reply-To: <496954360710110845v193e23b3l2602c187b8527195@mail.gmail.com>
References: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>
	<1192063855.3385.30.camel@localhost.localdomain>
	<496954360710102019t25fe9f10p5cf9295212b0c433@mail.gmail.com>
	<20071011114028.M98089@uniqsys.com>
	<496954360710110845v193e23b3l2602c187b8527195@mail.gmail.com>
Message-ID: <1192118641.3387.20.camel@dot.uniqsys.com>

On Thu, 2007-10-11 at 10:45 -0500, Robert Dailey wrote:
> What if 'mystring' has been encoded to "utf-8"?
> 
> mystring = u"Hello World"
> mystring = mystring.encode( "utf-8" )
> 
> So far the code above doesn't seem to work with this.

Why would you encode the string into UTF-8? Didn't you say that your
output file has to be encoded in UTF-16?

-- 
Carsten Haese
http://informixdb.sourceforge.net




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 10:20:43 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 15:20:43 +0100
Subject: Built-in functions and keyword arguments
In-Reply-To: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
Message-ID: <4725ec3a$0$6623$426a74cc@news.free.fr>

Armando Serrano Lombillo a ?crit :
> Why does Python give an error when I try to do this:
> 
>>>> len(object=[1,2])
> Traceback (most recent call last):
>   File "<pyshell#40>", line 1, in <module>
>     len(object=[1,2])
> TypeError: len() takes no keyword arguments
> 
> but not when I use a "normal" function:
> 
>>>> def my_len(object):
> 	return len(object)
> 
>>>> my_len(object=[1,2])
> 2

In the second case, the name of the argument *is* 'object'. Which is not 
the case for the builtin len (which, fwiw, has type 
'builtin_function_or_method', not 'function', so inspect.getargspec 
couldn't tell me more).

<ot>
While we're at it, you should avoid using builtin's names for 
identifiers - here, using 'object' as the arg name shadows the builtin 
'object' class).
</ot>



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 25 09:35:38 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 25 Oct 2007 15:35:38 +0200
Subject: about functions question
In-Reply-To: <1193314722.985517.252220@d55g2000hsg.googlegroups.com>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
	<1193314722.985517.252220@d55g2000hsg.googlegroups.com>
Message-ID: <47209ba3$0$4804$426a74cc@news.free.fr>

NoName a ?crit :
> sorry! Yes it's work.
> What about 2 question?
> Can i put function after main block?
> 
> print qq()
> 
> def qq():
>   return 'hello'

Where's your "main block" here ?

> Traceback (most recent call last):
>   File "C:\Python25\projects\indexer\test.py", line 1, in <module>
>     print qq()
> NameError: name 'qq' is not defined

Indeed. When the code is loaded in the interpreter (that is, when passed 
as a script or when imported as a module), all top-level statements are 
executed sequentially. This creates all the function and class objects 
and populate the module's namespace accordingly.

> 
> Or onli possible:
> 
> def main():
>  print qq()
> 
> def qq():
>   return 'hello'
> 
> main()
> 

The canonical case for small scripts is to have first all functions and 
globals defined, then the main code protected by a guard, ie:

import something

SOME_CONST = 42

def do_something():
   pass

def try_something_else():
   pass

if __name__ == '__main__':
   print SOME_CONST
   if not do_something():
     try_somethin_else()


For bigger apps, you usually define all functions and classes in 
modules, so the 'main' script doesn't define much - just do the needed 
imports, and call the appropriate function or class.


From michele.simionato at gmail.com  Thu Oct 11 00:35:44 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Wed, 10 Oct 2007 21:35:44 -0700
Subject: Keeping track of subclasses and instances?
In-Reply-To: <fejpo9$vm$1@news1.carnet.hr>
References: <fejpo9$vm$1@news1.carnet.hr>
Message-ID: <1192077344.171261.229360@22g2000hsm.googlegroups.com>

On Oct 10, 8:17 pm, Karlo Lozovina <_kar... at mosor.net> wrote:
> Hi,
>
> what's the best way to keep track of user-made subclasses, and instances of
> those subclasses? I just need a pointer in a right direction... thanks.
>
> --
> Karlo Lozovina -- Mosor

This recipe does what you want, with the intent of providing
automatic finalization of the instances, but you should be able
to tweak it to do everything you wish:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/523007

   Michele Simionato



From nikbaer at gmail.com  Tue Oct 23 14:46:44 2007
From: nikbaer at gmail.com (nik)
Date: Tue, 23 Oct 2007 18:46:44 -0000
Subject: tracking/ordering log files
Message-ID: <1193165204.000752.268220@i38g2000prf.googlegroups.com>

Hi,

I heard that there was a utility for keeping files and specifically
log files organized, but haven't been able to find anything but the
logging class. The logging class seems to help create the content of a
log file, but unless I am missing something, it doesn't keep track of
multiple log files.

What I am looking for is some utility that allows me to create a log
file, say test.log, when the program runs. Then the next time it runs
it will see that test.log already exists and will create test.log.1 or
something similiar. Ideally it would also be able to throw out log
files that are older than a certain date or sequence, so if we got to
creating the 10th file it would delete the first one and so on.

I am sorry for the ambiguois question, but I was told this existed,
can't find it and would like to know if I'm on a wild goose chase and
should just put something together myself.

Thank you,
Nik



From michele.simionato at gmail.com  Sat Oct 13 00:56:17 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Fri, 12 Oct 2007 21:56:17 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <mailman.154.1192242582.927.python-list@python.org>
References: <mailman.154.1192242582.927.python-list@python.org>
Message-ID: <1192251377.811876.107630@i13g2000prf.googlegroups.com>

On Oct 12, 10:23 pm, Massimo Di Pierro <MDiPie... at cti.depaul.edu>
wrote:
>
> P.S. Michele Simionato. I have heard your name before? Is it possible
> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
> and there is not many of us.

That is definitely possible, even if I don't remember your name
right know. But let us keep this off list ;)

       Michele Simionato



From khemkaamit at gmail.com  Thu Oct 18 02:58:26 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Thu, 18 Oct 2007 12:28:26 +0530
Subject: importing modules question
In-Reply-To: <1192689670.456814.55850@i13g2000prf.googlegroups.com>
References: <1192689670.456814.55850@i13g2000prf.googlegroups.com>
Message-ID: <1360b7230710172358i5805aca2u637b298551785c27@mail.gmail.com>

On 10/18/07, warhero <beingthexemplarylists at gmail.com> wrote:
> Hey all, sorry for the totally newb question. I recently switched over
> to python from ruby. I'm having problems figuring out how module
> importing works.. as a simple example I've got these files:
>
> /example/loader.py
> /example/loadee.py
>
> loadee.py
> class loadee(object):
>     def __init__(self):
>         print "loadee"
>
> loader.py
> import loadee
> if __name__ == "__main__":
>     l = loadee()
>
>
> When I run the loader file I get a TypeError: TypeError: 'module'
> object is not callable

'import module' statement imports the 'module' object and binds the
name to the local namespace. Any names defined in the module will have
to referenced by module.module_object

so you need to do something like this:
import loadee
if __name__ == "__main__":
     l = loadee.loadee()

Alternatively you can directly import the objects defined in a module by :

from loadee import loadee
if __name__ == "__main__":
     l = loadee()

cheers,
-- 
--
Amit Khemka


From mpelzsherman at yahoo.com  Mon Oct 29 18:07:18 2007
From: mpelzsherman at yahoo.com (Michael Pelz Sherman)
Date: Mon, 29 Oct 2007 15:07:18 -0700 (PDT)
Subject: getting serialized data into and out of a database 
Message-ID: <887503.28306.qm@web55308.mail.re4.yahoo.com>

I'm having a devil of a time getting serialized data into and out of a database (MySQL in this case) using python and MySQLdb.

I have some C code that has its own serialization/deserialization functions, which we've wrapped using SWIG.

I am able to save the serialized C structs to disk but when I try to write the exact same data to MySQL and pull it back out, I'm getting some strange results. The data comes back looking like this:

array('c', '\x01r\x01\x00\x...)

Is this a python buffer, or what? How can I access the data in there? I've tried using [1] but that doesn't seem to work.

Thanks...

- Michael



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/df47dfd7/attachment.html>

From uhum2004 at freemail.hu  Tue Oct  2 08:11:34 2007
From: uhum2004 at freemail.hu (=?ISO-8859-2?Q?Istv=E1n?=)
Date: Tue, 02 Oct 2007 14:11:34 +0200
Subject: random keypress bounce in a terminal
Message-ID: <47023576.2090809@freemail.hu>

Hi all,
I'm a novice in the world of Python and to begin with something useful I 
want to create a small tool for my microcontroller work. So I wrote a 
binary file compare (called bfc). It is just a few lines and put here 
with two sample files: http://www.evoran.hu/tmp
I have found a keypress handler and built into my program. It works fine 
as long as I hit keys normally, but gives extra characterts if I keep 
pressing some key, e.g. up or down arrow keys. It runs on a Linux system.
What's the wrong with it?
Thanks for any help,
Istv?n



From anthonysmith80 at gmail.com  Wed Oct 10 18:56:51 2007
From: anthonysmith80 at gmail.com (Anthony)
Date: Wed, 10 Oct 2007 15:56:51 -0700
Subject: PYTHONPATH on OS X
In-Reply-To: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
References: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
Message-ID: <1192057011.844289.319630@19g2000hsx.googlegroups.com>

On Oct 10, 11:00 pm, "mhearne808[insert-at-sign-here]gmail[insert-dot-
here]com" <mhearne... at gmail.com> wrote:
> I'm missing something major here.  I'm trying to add a directory to my
> python path using the PYTHONPATH environment variable, and it's being
> ignored by the Python interactive shell.
>
> Below is a capture of what I did.  Note that my newfolder appears
> nowhere on the list of directories in sys.path.  How do I get Python
> to pay attention to my shell variables?
>
> Using bash on OS X 10.4.10.
>
> %:~ user$ echo $PYTHONPATH
>
> %:~ user$ PYTHONPATH=/Users/user/newfolder
> %:~ user$ echo $PYTHONPATH
> /Users/user/newfolder
> %:~ user$ python
> Python 2.5.1 (r251:54863, Aug 10 2007, 10:46:58)
> [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.>>> import sys
> >>> sys.path
>
> ['', '/usr/local/lib/python2.5/site-packages/
> setuptools-0.7a1dev_r56320-py2.5.egg', '/usr/local/lib/python2.5/site-
> packages/ipython1-0.9alpha2-py2.5.egg', '/usr/local/lib/python2.5/site-
> packages/SQLAlchemy-0.4.0beta5-py2.5.egg', '/usr/local/lib/python2.5/
> site-packages/MySQL_python-1.2.2-py2.5-macosx-10.3-i386.egg', '/usr/
> local/lib/python25.zip', '/usr/local/lib/python2.5', '/usr/local/lib/
> python2.5/plat-darwin', '/usr/local/lib/python2.5/plat-mac', '/usr/
> local/lib/python2.5/plat-mac/lib-scriptpackages', '/usr/local/lib/
> python2.5/lib-tk', '/usr/local/lib/python2.5/lib-dynload', '/usr/local/
> lib/python2.5/site-packages', '/usr/local/lib/python2.5/site-packages/
> PIL']

Try
export PYTHONPATH=/Users/user/newfolder

Otherwise (without 'export') the variable is defined in the shell but
not passed on when you launch python.

Cheers,
Anthony



From pecora at anvil.nrl.navy.mil  Thu Oct 25 10:53:55 2007
From: pecora at anvil.nrl.navy.mil (Lou Pecora)
Date: Thu, 25 Oct 2007 10:53:55 -0400
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<1193261568.712027.234520@e9g2000prf.googlegroups.com>
Message-ID: <pecora-BAA3CD.10535525102007@ra.nrl.navy.mil>

In article <1193261568.712027.234520 at e9g2000prf.googlegroups.com>,
 "mensanator at aol.com" <mensanator at aol.com> wrote:

> > def factorial(i):
> >    fact=1.0
> >    for n in xrange(i):
> >       fact=n*fact
> >    return fact
> 
> Simple minded indeed.
> 
> >>> factorial(3)
> 0.0
> 

Whoops, should have xrange(i)+1 there. Or, better, xrange(2,n+1). Save a 
multiplication.  Just trying to show the OP the scheme for iteration 
here.

-- 
-- Lou Pecora


From DustanGroups at gmail.com  Mon Oct 29 22:00:12 2007
From: DustanGroups at gmail.com (Dustan)
Date: Tue, 30 Oct 2007 02:00:12 -0000
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <1193709612.745536.164490@d55g2000hsg.googlegroups.com>

On Oct 29, 5:57 pm, GHZ <geraint.willi... at gmail.com> wrote:
> Is this the best way to test every item in a list?

No.

The biggest problem is, obviously, you don't take advantage of
builtins any() and all(), or write corresponding short-circuiting
versions for python versions before 2.5.

The second problem is you build an entire list that gets disposed of
just as quickly. The third problem is you use lambda, which makes your
call to map() time inefficient as well as space inefficient. Both of
these problems can be fixed by using generator expressions.

> def alltrue(f,l):
>     return reduce(bool.__and__,map(f,l))
>
> def onetrue(f,l):
>     return reduce(bool.__or__,map(f,l))
>
>
>
> >>> alltrue(lambda x:x>1,[1,2,3])
> False

>>> all(x>1 for x in [1,2,3])
False

> >>> alltrue(lambda x:x>=1,[1,2,3])
> True

>>> all(x>=1 for x in [1,2,3])
True

> Thanks

HTH



From duncan.booth at invalid.invalid  Wed Oct  3 04:48:32 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 3 Oct 2007 08:48:32 GMT
Subject: Having fun with python
References: <1191396497.374407.262600@y42g2000hsy.googlegroups.com>
Message-ID: <Xns99BE63415FAF2duncanbooth@127.0.0.1>

Tzury <Afro.Systems at gmail.com> wrote:

>     def loadResMap(self):
>         self.resMap = []
>         [[self.resMap.append(str('A2' + sim[0] + '/r' + str(x)))
>             for x in range(1, eval(sim[1])+1)]
>                 for sim in [x.split(':')
>                     for x in quickViews.smsResList.v.split(",")]]
>         '''
>         # Confused? Have this one:
> 
>         data = quickViews.smsResList.v
>         sims, slots = [], data.split(",")
>         for slot in slots:
>             sims.append(slot.split(':'))
>         for sim in sims:
>             for x in range(1, eval(sim[1])+1):
>                 self.resMap.append(str('A2' + sim[0] + '/r' +
> str(x)))
> 
>         # same functionality different approaches
>         # forloops vs. list comprehension
>         # redability vs. smartassicity
>         # AKA: You have read too many Lisp books
>         '''
> 
The first one is stupid because it build a list of None objects and then 
throws it away.

The second one goes too far avoiding all list comprehensions:

   sims = [ slot.split(':')
     for slot in quickViews.smsResList.v.split(',') ]

is perfectly manageable, although it looks like there should be a method 
'getSims' on quickviews or smsResList or something that returns the data 
in the correct (already split) format.

The 'eval' is almost certainly a mistake in both variants. Probably you 
just meant to call 'int'. Also a format string would be clearer:

   for a, b in sims:
      self.resMap.extend("A2%s/r%d" % (a, x+1)) for x in range(int(b)))

However, one point you have shown very clearly: the second one is much 
easier to tear apart and reassemble.


From deets at nospam.web.de  Sat Oct 13 14:15:29 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 13 Oct 2007 20:15:29 +0200
Subject: Declarative properties
In-Reply-To: <mailman.144.1192220271.927.python-list@python.org>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>	<5n6j5nFghr61U4@mid.uni-berlin.de>	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>	<5n6np4Fghr61U6@mid.uni-berlin.de>	<mailman.99.1192124809.927.python-list@python.org>	<5n7948Fghr61U9@mid.uni-berlin.de>
	<mailman.144.1192220271.927.python-list@python.org>
Message-ID: <5ncga7Fgv9ljU1@mid.uni-berlin.de>

Dan Stromberg schrieb:
> On Thu, 11 Oct 2007 18:42:16 +0000, Marc 'BlackJack' Rintsch wrote:
> 
> 
>>> The "baggage" of possibly fixing (AKA "generalizing") how your attributes
>>> are accessed is something you lug around while your deadline looms.
>> Sorry I don't get it.  If I want to customize the access to a "normal"
>> attribute I simply turn it into a property.
> 
> You're right, properties are an intersting language feature.  I wasn't
> aware of them until today.
> 
> I'm not sure I believe they are better than disallowing public attributes
> and requiring setters and getters, but they do appear to address the same
> issue: the needless change in API when your internal representation
> needs to change.

This belief is most probably nurtured by Java. Or am I wrong here? 
Matter of factly, the whole getter/setter-mamboo-jamboo is nothing but a 
pathetic attempt to overcome the lack of attribute-access-hooks, as they 
are e.g. provided by python or C#.

By forcing this convention upon the programmer (and supporting it using 
e.g. BeanInfo and other introspection-based mechanisms), Java allows for 
the implementation of delegation, lazyness and so forth without all that 
forcing major interface changes upon the user. Talking of interfaces - 
they do lack properties as well... so you _can't_ possibly provide an 
interface with attributes.


But I really don't think one can argue over a more aesthetic & 
expressive syntax like

a.foo = b.bar * c.baz

compared to

a.setFoo(b.getBar() * c.getBaz())


Diez


From robert.kern at gmail.com  Thu Oct  4 13:07:53 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 04 Oct 2007 12:07:53 -0500
Subject: What does the syntax [::-1] really mean?
In-Reply-To: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
Message-ID: <fe36lb$3eu$1@sea.gmane.org>

Casey wrote:
> I've used [::-1] as a shorthand for reverse on several occasions, but
> it occurred to me yesterday I never really thought about why it
> works.  First, I checked out the documentation.
> 
>>From section 3.6 of the Python Library Reference:
> 
> "The slice of s from i to j with step k is defined as the sequence of
> items with index x = i + n*k such that 0 <= n < (j-i)/k. In other
> words, the indices are i, i+k, i+2*k, i+3*k and so on, stopping when j
> is reached (but never including j). If i or j  is greater than len(s),
> use len(s). If i or j are omitted or None, they become ``end'' values
> (which end depends on the sign of k). Note, k cannot be zero. If k is
> None, it is treated like 1."
> 
>>From Section 5.3.3 of the Python Language Reference (x[::-1] is a
> "proper slice" in the BNF, hence the excerpt):
> 
> "The conversion of a proper slice is a slice object (see section 3.2)
> whose start, stop and step attributes are the values of the
> expressions given as lower bound, upper bound and stride,
> respectively, substituting None for missing expressions."
> 
> Following the reference to section 3.2 provides a (non-rigorous)
> description of what a slice object is, in terms of the extended
> slicing semantics.  But it doesn't shed any additional light on the
> meaning of [::-1].
> 
>>From this, I would expect that x[::-1] would be identical to x[n:0:-1]
> (n and 0 being the "end" values, with the order switched due to the
> negative step value).  But the clause that "(but never including j)"
> means that x[n:0:-1] excludes the 1st element of x, x[0].  A quick
> test in ipython confirms that "abc"[3:0:-1] => "cb", not "cba".
> Changing the "end" value  to x[n:-1:-1] results in an empty string.
> 
> So my question is: "what exactly is [::-1] shorthand for"?  Or is it a
> special case, in which case why isn't it  defined as such in the
> library?

It's a shorthand for [None:None:-1].

I think you're misinterpreting the sentence, "If i or j are omitted or None,
they become ``end'' values (which end depends on the sign of k)." The end values
*aren't* 0 and n except by happenstance. None (or omission) is a special marker
that says "go to the end".

-- 
Robert Kern

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



From phil at freehackers.org  Wed Oct 10 12:44:55 2007
From: phil at freehackers.org (BlueBird)
Date: Wed, 10 Oct 2007 09:44:55 -0700
Subject: EasyMock for python ?
Message-ID: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>


    Hi,

Does anybody know where to find a library like EasyMock for python ? I
searched quickly but could not find anything.

I found python-mocks on sourceforge but form quickly reading the docs,
it is not an EasyMock style mock. Actually, according to
http://martinfowler.com/articles/mocksArentStubs.html I don't think it
is even a mock library. More a stub.

    Philippe



From mdipierro at cti.depaul.edu  Mon Oct 15 17:21:53 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Mon, 15 Oct 2007 16:21:53 -0500
Subject: py2app help
Message-ID: <FF5149BD-5BB7-4DAC-87BA-5707A9A558E3@cti.depaul.edu>

Hello,

Two users have reported this error when used the OSX version of Gluon  
(http://mdp.cti.depaul.edu/examples)

Traceback (most recent call last):
    File "/Users/jacek/src/gluon/runme.app/Contents/Resources/
__boot__.py", line 157, in <module>
      rograms/gluon/runme.py'))
    File "/Users/jacek/src/gluon/runme.app/Contents/Resources/
__boot__.py", line 148, in _run
      target, wasChanged = alias.ResolveAlias(None)
MacOS.Error: (-35, 'no such volume')
2007-10-15 21:29:08.896 runme[8217] runme Error
2007-10-15 21:29:08.898 runme[8217] runme Error
An unexpected error has occurred during execution of the main script
Error: (-35, 'no such volume')

I made it with py2app and I am relatively new to OSX.
Does anybody has any idea of what could be wrong?
I would very much appreciate any help. The code is posted including  
setup_py2app.

Massimo


From bdesth.quelquechose at free.quelquepart.fr  Thu Oct 25 17:13:19 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 25 Oct 2007 23:13:19 +0200
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <1193338993.100383.191300@o80g2000hse.googlegroups.com>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
	<4720c5c3$0$20084$426a74cc@news.free.fr>
	<1193338993.100383.191300@o80g2000hse.googlegroups.com>
Message-ID: <4721071f$0$12108$426a74cc@news.free.fr>

Adam Donahue a ?crit :
> Bruno,
> 
> I appreciate your attempt to answer my questions below, although I
> think my main point was lost amongst all your commentary and
> assumptions.  :^)    

Possibly. I sometimes tend to get a bit verbose !-)

>  I'm not inexperienced,

Obviously not.

> but I take the blame for
> the rambling initial post, though, which probably lead to the
> confusion.
> 
> So let me be more direct:
 >
>>From reading it seems that, indeed, __getattribute__ handles calling
> attribute.__get__( obj, type(obj ), which does the binding of the
> attribute to the object.

Yes.

> That is:
> 
> <thingy>.<attribute>
> 
> in turn is a call to
> 
> <thingy>.__getattribute__( '<attribute>' )    <1>

Yes.

> The default body of __getattribute__ in turn fetches the associated
> value (by traversing the class hierarchy if necessary) and examines
> its type in order to determine what to return.

Yes.

> Let's assume the ultimate value associated with the attribute (key) is
> v.
> 
> If type(v) is a function,

If v supports the descriptor protocol (which is the case for function 
objects and property objects) AND v is a class attribute

> __getattribute__ returns
> v.__get__( <thingy>, type( <thingy> )

Yes.

> If type(v) is, say, an integer, 

If v doesn't support the descriptor protocol

> __getattribute__ returns v unmolested.

Yes.

> And so forth.
> 
> So:
> 
>>>>class X( object ):
> 
> ...     a = 1

You understand that 'a' is a class attribute, don't you ?

> ...     class b( object ): pass
> ...     def c( self ): pass
> ...
> 
>>>>X.a
> 
> 1
> 
>>>>X.b
> 
> <class '__main__.b'>
> 
>>>>X.c
> 
> <unbound method X.c>
> 
>>>>x = X()
>>>>x.a
> 
> 1

Returns type(x).a

>>>>x.b
> 
> <class '__main__.b'>

idem

>>>>x.c
> 
> <bound method X.c of <__main__.X object at 0x81b2b4c>>

Yes.

> If my interpretation is correct, the X.c's __getattribute__ call knows
> the attribute reference is via a class,

Yes

> and thus returns an unbound
> method 

It returns c.__get__(None, X). Which is implemented to return an unbound 
method if the first arg is None.

> (though it does convert the value to a method).

__getattribute__ doesn't convert anything here - and FWIW, doesn't care 
if c is a function or property or whatnot. The only thing it looks for 
is if c has a __get__ method.

>  Likewise,
> x.c's __getattribute__ returns the value as a method bound to the x
> instance.

Yes, because then __getattribute__ returns x.c.__get__(x, X), which, 
since c is a function, returns a bound method.

> How does __getattribute__ knows the calling context.  Its first
> argument is the attribute name from what I can tell, not the object
> calling it.

Really ?-)

__getattribute__ is itself a function and an attribute of a class (and 
FWIW, it's signature is __getattribute__(self, name)). So when itself 
looked up, it returns a method object, which when called passes the 
'target' object as first arg.

You already know that Python's classes are objects (instances of type 
'type'). So you should by now understand how __getattribute__ knows it's 
target. Got it ? Yes, right: when looking up attributes on a class, it's 
the class's class (IOW: the type)  __getattribute__ method that is 
invoked !-)

> Is this correct so far?

cf above.

> Moving on to __get__.  Assume:
> 
> class X( object ):
>     def foo(self):
>         print `self`
> x = X()
> 
> Then:
> 
> x.foo()
> 
> Is similar (perhaps the same as) to:
> 
> X.foo.__get__( x, X )()

Almost but not quite. It's:

x.foo() <=> X.foo(x) <=> X.foo.im_func.__get__(x, X)()

It's a bit less confusing when the function is defined outside the class:

def bar(self):
   print self

X.bar = bar

x = X()

Now you have:

x.bar() <=> X.bar(x) <=> bar.__get__(x, X)()


> (__getattribute__ performs the transformation automatically when one
> references via the . operator.)
> 
> And so one can do: 
> 
>>>>class X( object ):
> 
> ...     x = 1

Here, x is a class attribute.

> 
>>>>def set_x( self, x ): self.x = x

Now this creates an instance attribute that will shadow the class attribute.

> ...
> 
>>>>x = X()
>>>>set_x.__get__( x, X )( 5 )
>>>>x.x
> 
> 5

So far, so good.

> The logical next question then is how does one best add a new method
> to this class so that future references to x.set_x() and X.set_x will
> properly resolve?  It seems the answer would be to somehow add to
> X.__dict__ a new value, with key 'set_x', value the function set_x.

Yes. Which is very simply done by just binding set_x to X.set_x. Just 
like I did above. Dynamically adding methods to classes is pretty 
straightforward, the tricky point is to dynamically add methods to 
instances, since the descriptor protocol is only triggered for class 
attributes. But you obviously found how to do it using func.__get__(obj, 
type(obj)) !-)

>>From there on the . operator I assume would perform the binding to X
> or x as needed on-the-fly.

Yes.

NB: please some guru around correct me if I said something wrong (Alex ? 
Tim ? Fredrick ? If you hear me ?)


From deets at nospam.web.de  Wed Oct  3 08:03:46 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 03 Oct 2007 14:03:46 +0200
Subject: enumerate overflow
In-Reply-To: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
Message-ID: <5mheq7Fd78r2U2@mid.uni-berlin.de>

crwe at post.cz schrieb:
> Hello all,
> 
> in python2.4, i read lines from a file with
> 
> for lineNum, line in enumerate(f): ...
> 
> However, lineNum soon overflows and starts counting backwards. How do
> i force enumerate to return long integer?

Most probably you can't, because it is a C-written function I presume.

But as python 2.4 has generators, it's ease to create an enumerate yourself:


def lenumerate(f):
     i = 0
     for line in f:
         yield i, line
         i += 1

Diez


From python-url at phaseit.net  Mon Oct  1 10:17:46 2007
From: python-url at phaseit.net (Gabriel Genellina)
Date: Mon, 1 Oct 2007 14:17:46 +0000 (UTC)
Subject: Python-URL! - weekly Python news and links (Oct  1)
Message-ID: <fdqvia$d1j$1@lairds.us>

QOTW:  "Does 'this non-Python related twaddle is boring the shit out of me'
mean anything to you both?" - Steve Holden
    http://groups.google.com/group/comp.lang.python/msg/78b9262de1aeaecd

"... if you're programming on Win32 and expecting the application to scale
well, you already have problems that must first be addressed that are far
more fundamental than the GIL." - Ben Finney

    
    An exercise on code optimization:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/6cb33ea4b72ee57c/
    
    Modifying list.index() using a custom comparison function:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/2f38ef4c3ff428ac/
    
    getopt, argparse, numeric options and negative numbers as arguments:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/7a43fdec73b9f59a/
    
    A poll about Python 3.0 migration plans:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/1133960e70b2cf0c/
    
    Getting out of nested loops: alternatives to labeled break and continue:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/7ea1a8d9f1a1dec7/
    
    setuptools insists on automatically downloading dependencies;
    interactions with other package managers:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/da5e45553acccb9d/
    
    A sorteddict proposal:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/a6923dc3f1026055/
    
    How to handle exceptions in SimpleXMLRPCServer:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/6cf52fc775b323b5/
    
    
========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    Just beginning with Python?  This page is a great place to start:
	http://wiki.python.org/moin/BeginnersGuide/Programmers

    The Python Papers aims to publish "the efforts of Python enthusiats":
	http://pythonpapers.org/
    The Python Magazine is a technical monthly devoted to Python:
	http://pythonmagazine.com

    Readers have recommended the "Planet" sites:
	http://planetpython.org
	http://planet.python.org

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard continues the marvelous tradition early borne by
    Andrew Kuchling, Michael Hudson, Brett Cannon, Tony Meyer, and Tim
    Lesher of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Many Python conferences around the world are in preparation.
    Watch this space for links to them.

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Phaseit, Inc. (http://phaseit.net) is pleased to participate in and
sponsor the "Python-URL!" project.  Watch this space for upcoming
news about posting archives.


From george.sakkis at gmail.com  Thu Oct 25 02:35:36 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 25 Oct 2007 06:35:36 -0000
Subject: Mobile Startup looking for sharp coders
In-Reply-To: <1193251326.812853.301100@q3g2000prf.googlegroups.com>
References: <1193251326.812853.301100@q3g2000prf.googlegroups.com>
Message-ID: <1193294136.555994.47440@y27g2000pre.googlegroups.com>

On Oct 24, 2:42 pm, Vangati <svang... at gmail.com> wrote:

> Plusmo is Hiring!
>
> (snipped)
>
> Recruiting Agencies: Please do not send us unsolicited resumes.
> Plusmo does not consider resumes from any agencies.

Lame company headhunters: Please do not send us unsolicited
spamvertisments irrelevant to Python. Comp.lang.python does not
consider spamvertisments from any lame companies.

There, I fixed it for you.



From wizzardx at gmail.com  Sun Oct  7 04:51:13 2007
From: wizzardx at gmail.com (David)
Date: Sun, 7 Oct 2007 10:51:13 +0200
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
In-Reply-To: <18c1e6480710070143x5c45733ds2d6e237ff1825901@mail.gmail.com>
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
	<18c1e6480710070143x5c45733ds2d6e237ff1825901@mail.gmail.com>
Message-ID: <18c1e6480710070151m60e0726ao778d986faabb8faf@mail.gmail.com>

Typo.

> Another method is to setup an ssh service on the server (perhaps in

Should be:

> Another method is to setup an rsync service on the server (perhaps in


From aclarke11 at yahoo.co.uk  Sun Oct 28 01:12:54 2007
From: aclarke11 at yahoo.co.uk (Tony)
Date: Sat, 27 Oct 2007 22:12:54 -0700
Subject: while within while
In-Reply-To: <mailman.515.1193512303.13605.python-list@python.org>
References: <mailman.515.1193512303.13605.python-list@python.org>
Message-ID: <1193548374.729327.258030@22g2000hsm.googlegroups.com>

On Oct 27, 7:11 pm, Shawn Minisall <trekker... at comcast.net> wrote:
> snip
>
> import random
>
> def main():
>
>     #define and initialize variables
>     #choice as int
>     choice = 0
>     #weapon choice as int
>     weaponchoice = 0
>     #number of wins
>     win = 0
>     #number of loses
>     lose = 0
>     #number of ties
>     tie = 0
>     #number of rounds
>     rounds = 0
>     #play again loop
>     again = "no"
>
snip

In Python, you usually don't need to define your variables in advance.
Choice is determined as a number by your use of input() and the
response of the user, and in other code it could later be changed to
another type. So your initial declaration was unnecessary.'Dynamic
typing' its called, one of the joys of the language compared to  Java,
C etc.. So not doing that would make your code a bit simpler, one less
thing to worry about

Tony



From gosinn at gmail.com  Sun Oct 21 04:22:29 2007
From: gosinn at gmail.com (Gosi)
Date: Sun, 21 Oct 2007 08:22:29 -0000
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
In-Reply-To: <1192920380.625668.221960@i13g2000prf.googlegroups.com>
References: <47133159.9010204@acm.org>
	<1192920380.625668.221960@i13g2000prf.googlegroups.com>
Message-ID: <1192954949.817248.242120@y27g2000pre.googlegroups.com>

On Oct 20, 10:46 pm, rbe <berne... at gmail.com> wrote:
> On Oct 15, 5:22 am, Mike Kent <mk... at acm.org> wrote:
>
> > Conference page
> >         // with links to program details //
> >                 (updated Friday 10/12)
>
> >        http://www.sigapl.org/apl2007.html...
>
> At APL2007, I'll be announcing the release of the APEX APL compiler,
> version 0.0.0, under GPL Version 2.
> If you can't wait until then, you can download it for Dyalog Linux atwww.snakeisland.com.
>
> Bob

Congratulations on your compiler.

I looked through your pages and came across this

"[This article originally appeared in the ACM SIGAPL Quote Quad, vol.
21, no.1, September 1990.]

The APL character set has contributed, more than any other facet of
the language, to its lack of acceptance in the computing community at
large. The character set is a metaproblem -- not a problem in and of
itself, but a creator of other recurring problems of hardware,
software, ergonomics, and psychology. The adoption of new, ASCII-base
dialects of APL, such as J, is suggested as one solution to the
character set problem. "

This is also the reason for why I will not be downloading your new
compiler until there will be a J version of it, something I hope will
be coming soon.

I can not use the APL character set at all.
It is too mixed up with my national characters.



From grante at visi.com  Fri Oct 19 11:45:42 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 19 Oct 2007 15:45:42 -0000
Subject: vote for Python - PLEASE
References: <mailman.193.1192751640.13605.python-list@python.org>
Message-ID: <13hhk968d8mf7c9@corp.supernews.com>

On 2007-10-18, Monty Taylor <monty at inaugust.com> wrote:

> MySQL has put up a poll on http://dev.mysql.com asking what your primary 
> programming language is. Even if you don't use MySQL - please go stick 
> in a vote for Python. I'm constantly telling folks that Python needs 
> more love, but PHP and Java are kicking our butts...
>
> (I know the world would be a better place if the poll were honest, but 
> I'd rather that people got the message that they should do more python 
> development work!)

What makes you think that faking a poll will send that message?

Even though Python is way ahead, you've probably ruined it for
us.  I suspect the folks at MySQL will ignore or discount the
results when they find out you've solicited fradulent votes
from the Python community.

-- 
Grant Edwards                   grante             Yow! I just got my PRINCE
                                  at               bumper sticker ... But now
                               visi.com            I can't remember WHO he
                                                   is ...


From george.sakkis at gmail.com  Tue Oct  2 13:54:55 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 02 Oct 2007 17:54:55 -0000
Subject: Combine two dictionary...
In-Reply-To: <1191261690.056215.179920@57g2000hsv.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
	<mailman.1357.1191260483.2658.python-list@python.org>
	<1191261690.056215.179920@57g2000hsv.googlegroups.com>
Message-ID: <1191347695.772065.316690@22g2000hsm.googlegroups.com>

On Oct 1, 2:01 pm, Abandoned <best... at gmail.com> wrote:

> I want to total score..
> For example
>
> > > dict1={1: 4,  3: 5}... and 2 millions element
> > > dict2={3: 3,  8: 6}... and 3 millions element
>
> result should be dict3={1:4, 3:8, 8:6}

Unless you have some prior knowledge about the dicts (e.g.
len(intersection(d1,d2))), it's hard to beat the following, in pure
Python at least:

def sumdicts(d1,d2):
    if len(d1) < len(d2):
        d1,d2 = d2,d1
    dsum = dict(d1)
    for key,value in d2.iteritems():
        if key not in dsum:
            dsum[key] = value
        else:
            dsum[key] += value
    return dsum

Surprisingly (?), this turns out to be faster than using dict.get(key,
0) instead of the explicit if/else.

George



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Oct 20 06:54:07 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 20 Oct 2007 12:54:07 +0200
Subject: vote for Python - PLEASE
References: <mailman.193.1192751640.13605.python-list@python.org>
	<13hhk968d8mf7c9@corp.supernews.com>
	<13hj10bro78ltad@corp.supernews.com>
Message-ID: <5nu52fFjfiluU2@mid.individual.net>

Steven D'Aprano wrote:
> It's an Internet poll. By definition, the results are meaningless.

Regrettably, there are many people that don't share your definition.

Also, why would there be telephone votings in TV if they were
meaningless to the default watcher? :) 

Regards,


Bj?rn

-- 
BOFH excuse #225:

It's those computer people in X {city of world}.  They keep stuffing
things up.



From sndive at gmail.com  Tue Oct 30 21:02:12 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Wed, 31 Oct 2007 01:02:12 -0000
Subject: simple? embedding question
In-Reply-To: <bgQVi.1175$RA6.827@newsfe03.phx>
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
	<4727854D.3050201@spam.com>
	<1193789085.081049.152410@22g2000hsm.googlegroups.com>
	<bgQVi.1175$RA6.827@newsfe03.phx>
Message-ID: <1193792532.673956.104530@57g2000hsv.googlegroups.com>

On Oct 30, 6:47 pm, Farshid Lashkari <n... at spam.com> wrote:
> snd... at gmail.com wrote:
> > i switched to PyImport_ImportModuleEx per your suggestion but i still
> > get
>
> > Traceback (most recent call last):
> >   File "<string>", line 1, in ?
> > NameError: name '__main__' is not defined
>
> > i tried PyRun_SimpleString("__main__.foo.baz()"); :
> > Traceback (most recent call last):
> >   File "<string>", line 1, in ?
> > NameError: name '__main__' is not defined
>
> > i do not have if __name__ == '__main__':
> > statement anywhere in the module i'm importing,
> > but nevertheless i checked that PyImport_AddModule("__main__");
> > and subsequent getdict return non null pointers.
> > does non null dictionary indicate that PyImport_AddModule
> > succeeded as opposed to creating an empty module object?
>
> Sorry, I misunderstood the behavior of the PyImport_ImportModuleEx()
> function. You can use the PyImport_AddModule() function as before, but
> you must explicitly add the module to the __main__ module. Here is some
> code:
>
> PyObject *mainmod = PyImport_AddModule("__main__");
> PyObject *foo = PyImport_ImportModule("foo");
> Py_INCREF(foo); //Increment foo module since PyModule_AddObject() steals
> reference
> PyModule_AddObject(mainmod, "foo", foo);
> PyRun_SimpleString("foo.baz()");
>
> -Farshid

it works!
could i cache maindict pointer in a global var or am i condemned to
call
                PyObject* mainmod = PyImport_AddModule("__main__");
                assert(mainmod);
                PyObject* maindict = PyModule_GetDict(mainmod);
                assert(maindict);
every time i want to PyRun_String?
i call Py_Finalize only atexit.

i also found boost library docs of some help:
http://service-spi.web.cern.ch/service-spi/external/Boost/1.30.0/rh73_gcc32/libs/python/doc/tutorial/doc/using_the_interpreter.html

btw what kind of object is returned in case i use Py_file_input
in PyRun_String?



From martin at marcher.name  Wed Oct 24 15:12:55 2007
From: martin at marcher.name (Martin Marcher)
Date: Wed, 24 Oct 2007 21:12:55 +0200
Subject: crontab library
Message-ID: <5fa6c12e0710241212v7c675a1dp9c87d3c9f98df261@mail.gmail.com>

Hello,

is anyone aware of a crontab library.

Possibly even more complete, something that will let me
create/manipulate/delete crontab entries in a nice way and install the
new crontab accordingly.

I had a look at the crontab docs and never realized how complex it
actually is. So before I spend time in creating such a thing maybe
someone did it already :)

thanks
martin

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From james.b.looney at lmco.com  Tue Oct 23 19:29:53 2007
From: james.b.looney at lmco.com (Looney, James B)
Date: Tue, 23 Oct 2007 17:29:53 -0600
Subject: Python equivalent to *nix 'banner' problem
Message-ID: <BAA666C1E230E143BB9E839ED55EF19407863F81@emss02m12.us.lmco.com>

 <<banner.dat>> 
I have written a Python script to duplicate the 'banner' program from
IRIX.  Attached is the generated data file.  This data is generated the
first time by using 'banner' on my IRIX machine.  Thereafter, the data
is simply used (and can be run from anywhere).  The data is a marshaled
copy of the characters generated by 'banner'.

Regardless of whether I run this from IRIX or Windows, I get the same
results.  I'm expecting the string "ab" to be displayed twice.  Instead,
the second time, I get ABB.  If I add a 3rd print line, I'll get ABBB.
I'm now stuck trying to understand what's going on.  It seems like
there's an overflow somewhere since it's overwriting my dictionary for
the letter 'a', but I don't know how it's doing it.

Does anyone see the problem, or have suggestions on how to fix it?
Thanks,
-JB

<output>
H:\play\python\banner>Banner.py ab
----------------------------------------

   ##   #####
  #  #  #    #
 #    # #####
 ###### #    #
 #    # #    #
 #    # #####

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

   ##   #####  #####
  #  #  #    # #    #
 #    # #####  #####
 ###### #    # #    #
 #    # #    # #    #
 #    # #####  #####

----------------------------------------
</output>

<code>
#!/bin/env /usr/local/openSource/bin/python

import os, sys, marshal
from pprint import pprint

class Banner:

   ourDataFile = "banner.dat"
   ourDataPath = '.' + os.sep

   if( 0 <= __file__.rfind( os.sep ) ):
      ourDataPath = __file__.rsplit( os.sep, 1 )[ 0 ] + os.sep

 
########################################################################
########
   def __init__( self ):
      self.myBannerDict = {}
      if( False == os.path.exists( Banner.ourDataPath +
Banner.ourDataFile ) ):
         print "Having to create data file for the first time.  This
will take longer than normal."
         self.createBannerMarshal()

      f = open( Banner.ourDataPath + Banner.ourDataFile, 'rb' )
      self.myBannerDict = marshal.load( f )
      f.close()

 
########################################################################
########
   def getTotalLength( self, letterList ):
      totalLength = 0
      for line in letterList:
         totalLength += len( line.strip( os.linesep ) )

      return totalLength

 
########################################################################
########
   def createBannerMarshal( self ):
      # Create my list of all allowed ASCII characters.
      for i in range( 32, 127 ):
         c = chr( i )
         self.myBannerDict[ c ] = os.popen( "banner '%s'" % c
).readlines()

         # Catch any of the shell specific guys that the shell didn't
like.
         if( 0 == self.getTotalLength( self.myBannerDict[ c ] ) ):
            self.myBannerDict[ c ] = os.popen( 'banner "%s"' % c
).readlines()

         length = 0
         prependSpace = ""
         for j in range( len( self.myBannerDict[ c ] ) ):
            self.myBannerDict[ c ][ j ] = self.myBannerDict[ c ][ j
].strip( os.linesep )
            if( length < len( self.myBannerDict[ c ][ j ] ) ):
               length = len( self.myBannerDict[ c ][ j ] )
               if( 0 == self.myBannerDict[ c ][ j ].find( '#' ) ):
                  prependSpace = " "

         if( 0 == length ):
            length = 8

         for j in range( len( self.myBannerDict[ c ] ) ):
            self.myBannerDict[ c ][ j ] = "%s%-*s" % ( prependSpace,
length, self.myBannerDict[ c ][ j ] )

         f = open( Banner.ourDataPath + Banner.ourDataFile, 'wb' )
         marshal.dump( self.myBannerDict, f )
         f.close()

 
########################################################################
########
   def getBanner( self, inputStr ):
      retVal = []
      for c in inputStr:
         banneredCharList = self.myBannerDict[ c ]
         if( 0 == len( retVal ) ):
            retVal = banneredCharList
         else: 
            for i in range( len( banneredCharList ) ):
               retVal[ i ] += banneredCharList[ i ]

      return os.linesep.join( retVal )
      
if( "__main__" == __name__ ):
   banner = Banner()
   print 40 * '-' + os.linesep + banner.getBanner( sys.argv[ 1 ] ) +
os.linesep + 40 * '-'
   print 40 * '-' + os.linesep + banner.getBanner( sys.argv[ 1 ] ) +
os.linesep + 40 * '-'
   #print 40 * '-' + os.linesep + banner.getBanner( sys.argv[ 1 ] ) +
os.linesep + 40 * '-'
</code>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/0999651a/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: banner.dat
Type: application/octet-stream
Size: 10231 bytes
Desc: banner.dat
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/0999651a/attachment.obj>

From nadiasvertex at gmail.com  Fri Oct 12 11:09:37 2007
From: nadiasvertex at gmail.com (Christopher Nelson)
Date: Fri, 12 Oct 2007 11:09:37 -0400
Subject: PEP idea: Instrumented Python
Message-ID: <c38b163f0710120809l417bd29apad781a55c491813d@mail.gmail.com>

I was looking at adding dtrace-like dynamic tracing to Python.  Note that
this isn't dtrace itself.  The basic rationale:

1. A lot of enterprise-level software is written in Python.  It is difficult
to impossible to reproduce the customer environment in a test lab.
Sometimes applications hang mysteriously, and we are unable to duplicate the
problems in our environment.
2. dtrace is a good design.  It has little to no overhead for collection
points that are not collecting data.  Emulating that behavior allows you to
test what you fly and fly what you test.
3. Having the ability to only get trace data you want (or need) instead of
trace data for every instruction executed is very useful.  It also reduces
bandwidth requirements when archiving the traces, or shipping them out over
a network connection.
4. The ability to dynamically expand and contract the tracing scope during a
trace is vital to getting the right data.

The general plan would be to provide collectors in all of the public python
API functions.  The filtering code would also be in the local system, for
speed and bandwidth-conserving purposes.  The filters should generally be
native code.  The data should be writeable to a file or to a network
socket.  In addition, there should be a network socket listening for
commands from a tracing client.  The client would be able to upload
additional filter scripts and start or stop tracing transparently to the
running source.

For security there should be an authentication mechanism that allows the
application to decide whether or not a connection to the trace facility
should be allowed, and a way to disable the trace listening port on
startup.  (Or perhaps it should be disabled on startup by default and
enabled if so desired.)

Finally, there should, of course, be Pythonic access to the trace system.

The essential differences between the current tracing system and the
proposal involve the selectable granularity, the transparent remote access,
and automatic triggering of collection points.

Comments? Please make sure to reply to all, I am not subscribed to the list.

-={C}=-
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071012/d41d9001/attachment.html>

From exarkun at divmod.com  Thu Oct 25 11:12:14 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Thu, 25 Oct 2007 11:12:14 -0400
Subject: Parallel insert to postgresql with thread
In-Reply-To: <56EDD026-3AED-4341-BCE3-8B028598C5CE@myemma.com>
Message-ID: <20071025151214.8162.1787401471.divmod.quotient.27649@ohm>

On Thu, 25 Oct 2007 09:46:54 -0500, Erik Jones <erik at myemma.com> wrote:
>
> [snip]
>
>Fortunately, in his case, that's not necessarily true.  If they do
>all their work with the same connection then, yes, but there are
>other problems with that as mention wrt thread safety and psycopg2.
>If he goes the recommended route with a separate connection for each
>thread, then Postgres will not serialize multiple inserts coming from
>separate connections unless there is something like and ALTER TABLE
>or REINDEX concurrently happening on the table.  The whole serialized
>inserts thing is strictly something popularized by MySQL and is by no
>means necessary or standard (as with a lot of MySQL).

PostgreSQL won't serialize inserts to the same table with a sequence
column?  Wow. :)

Jean-Paul


From paul at boddie.org.uk  Wed Oct 10 06:05:18 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Wed, 10 Oct 2007 03:05:18 -0700
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191961946.278597.91810@k79g2000hse.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<1191958556.735855.199180@22g2000hsm.googlegroups.com>
	<1191961946.278597.91810@k79g2000hse.googlegroups.com>
Message-ID: <1192010718.604966.277190@19g2000hsx.googlegroups.com>

On 9 Okt, 22:32, aaron.watt... at gmail.com wrote:
>
> Well I'd like people to use the software because they think
> it's good.  If the name is a problem it's probably only the
> first of many reasons they won't want to use it or will not
> like it because it doesn't match their preconceptions.

Please ignore the fuss about the name - I guess you didn't spend the
required three months pre-hyping the project on a blog, thus not
getting "buy in" from the impatient masses - and tell us how the
software compares to stuff like Lucene or Xapian.

Paul



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 08:40:38 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 14:40:38 +0200
Subject: Mysql class works like php
In-Reply-To: <47089d5b$0$21926$157c6196@dreader1.cybercity.dk>
References: <mailman.1548.1191539444.2658.python-list@python.org>
	<4705e772$0$19642$426a74cc@news.free.fr>
	<47089d5b$0$21926$157c6196@dreader1.cybercity.dk>
Message-ID: <4708d3a1$0$21550$426a34cc@news.free.fr>

gardsted a ?crit :
> Bruno Desthuilliers wrote:
>> Andrey a ?crit :
>>> Hi
>>>
>>> just a quick question about using MySQL module... are there any api / 
>>> class available to give a higher level in working with Mysql in python?
>>> such as
>>> db.fetch_array(),
>>> db.fetch_rows(),
>>> db.query(),
>>> for eachrow in db.fetch_array():
>>>     xxxx
>>
(snip)
> Maybe You should look into sqlalchemy.
> I am also a newbie at that, but it allows you to do things like this 
> (untested):
>             sqltxt="""select * from mytable"""
>             result=mysession.execute(sqltxt)
>             for r in result.fetchmany():
> 
> which pretty good mimics the 'for eachrow in db.fetch_array():'

SQLAlchemy is quite a good package (and *way* higher level than anything 
in PHP), but you don't need it to do the above. Any db-api compliant 
package will do:

sql = "SELECT * FROM yaddayadda"
cursor.execute(sql)
for row in cursor.fetchall():
    # code here



From rhamph at gmail.com  Tue Oct  2 02:07:15 2007
From: rhamph at gmail.com (Rhamphoryncus)
Date: Tue, 02 Oct 2007 06:07:15 -0000
Subject: Using fractions instead of floats
In-Reply-To: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
Message-ID: <1191305235.844686.126460@g4g2000hsf.googlegroups.com>

On Sep 30, 7:35 pm, andresj <andres.j.... at gmail.com> wrote:
> I was doing some programming in Python, and the idea came to my mind:
> using fractions instead of floats when doing 2/5.

The core problem with rationals (other than the inability to handle
irrationals) is their tendency to require more and more memory as
calculations progress.  This means they get mysteriously slower and
slower.

http://mail.python.org/pipermail/python-list/2002-October/166630.html

My own "pet numeric type" is fixed point.  You get as much precision
as you specify.  Alas, 2/5 would likely result in 0. ;)

--
Adam Olsen, aka Rhamphoryncus



From python-url at phaseit.net  Mon Oct 29 10:00:06 2007
From: python-url at phaseit.net (Gabriel Genellina)
Date: Mon, 29 Oct 2007 14:00:06 +0000 (UTC)
Subject: Python-URL! - weekly Python news and links (Oct 29)
Message-ID: <fg4p16$ghi$1@lairds.us>

QOTW:  "Template engines are amongst the things that seem easy enough to
look at the available software and say 'bah, I'll write my own in a day',
but are complex enough to keep them growing over years until they become
as huge and inaccessible as all the other implementations. Then it's time
for someone else to look at it and say 'bah, I'll write my own in a day'."
- Stefan Behnel
    http://groups.google.com/group/comp.lang.python/msg/82f632f0b3142f6e

"Lord have mercy." - Bruno Desthuilliers, on learning of composition of
"... 3 decorators named public, private and protected."
    http://groups.google.com/group/comp.lang.python/msg/710d3a156bd 76719

    
    An example showing that there is no point in
    generating Python source code:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/e35c76131676a9bd/
    
    Everything you want to know about attribute access:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/e0576419946a84fc/

    Not only is there a world beyond Web development, it's even 
    important enough for people to write books about it.  *Rapid
    GUI Programming with Python and Qt: The Definitive Guide to
    PyQt Programming* and *Beginning Game Development with Python
    and Pygame ...* just hit the store shelves:
        http://www.riverbankcomputing.com/pipermail/pyqt/2007-October/017499.html
	http://www.willmcgugan.com/2007/10/04/free-chapter-of-beginning-game-development-with-python-and-pygame/
    
    An example of use of *really* big numbers:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/764fc694ddd3d5f5/
    
    Sort-of obfuscation contest: write your own factorial function!
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/7d9ac27ee87cf569/
    
    Proposal: Decimal literals:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/27b029c511db4297/
    

========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    Just beginning with Python?  This page is a great place to start:
	http://wiki.python.org/moin/BeginnersGuide/Programmers

    The Python Papers aims to publish "the efforts of Python enthusiats":
	http://pythonpapers.org/
    The Python Magazine is a technical monthly devoted to Python:
	http://pythonmagazine.com

    Readers have recommended the "Planet" sites:
	http://planetpython.org
	http://planet.python.org

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard continues the marvelous tradition early borne by
    Andrew Kuchling, Michael Hudson, Brett Cannon, Tony Meyer, and Tim
    Lesher of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Many Python conferences around the world are in preparation.
    Watch this space for links to them.

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Phaseit, Inc. (http://phaseit.net) is pleased to participate in and
sponsor the "Python-URL!" project.  Watch this space for upcoming
news about posting archives.


From kadeko at gmail.com  Mon Oct 15 03:46:09 2007
From: kadeko at gmail.com (looping)
Date: Mon, 15 Oct 2007 00:46:09 -0700
Subject: Twisted (or for loops ?) madness
Message-ID: <1192434369.994950.33940@v29g2000prd.googlegroups.com>

Hi,
Probably not the best group to post my question but I'm sure there is
some people here that use Twisted.
First here is the beginning of my source code:

from twisted.internet import reactor, defer, threads
import time

class CompilerThread(object):
    def __init__(self, task, delay):
        self.task = task
        self.delay = delay

    def _processing(self, delay):
        print 'Start :', self.task
        # Simulate delayed result, to fire immediately use
self.d.callback(self.task)
        time.sleep(delay)
        return self.task

    def compile(self):
        print 'Compile :', self.task
        print self
        # Create Deferred in another thread and add callback
        self.d = threads.deferToThread(self._processing,
self.delay).addCallback(self.print_result)
        # Return the deferred, this way you could add callback later
        return self.d

    def print_result(self, result):
        # Print result
        print 'Compiler result :', result, self.task
        # MUST return result otherwise next callback receive None
        return result

# Create Compiler objects
ct1 = CompilerThread('*OBJECT 1*', 2)
ct2 = CompilerThread('*OBJECT 2*', 3)
ct3 = CompilerThread('*OBJECT 3*', 5)

# Use succeed to create a deferred already fired
d = defer.succeed(None)

Now my problem:
With this code everything work fine:

d.addCallback(lambda result: ct1.compile())
d.addCallback(lambda result: ct2.compile())
d.addCallback(lambda result: ct3.compile())

reactor.callLater(20, reactor.stop)
reactor.run()

Output:

Compile : *OBJECT 1*
<__main__.CompilerThread object at 0x00BAD070>
Start : *OBJECT 1*
Compiler result : *OBJECT 1* *OBJECT 1*
Compile : *OBJECT 2*
<__main__.CompilerThread object at 0x00BAD050>
Start : *OBJECT 2*
Compiler result : *OBJECT 2* *OBJECT 2*
Compile : *OBJECT 3*
<__main__.CompilerThread object at 0x00CDA4B0>
Start : *OBJECT 3*
Compiler result : *OBJECT 3* *OBJECT 3*


But when I try to replace this code with a for loops, something goes
wrong:

l = [ct1, ct2, ct3]
for c in l:
    d.addCallback(lambda result: c.compile())

reactor.callLater(20, reactor.stop)
reactor.run()

Output:

Compile : *OBJECT 1*
<__main__.CompilerThread object at 0x00BAD030>
Start : *OBJECT 1*
Compiler result : *OBJECT 1* *OBJECT 1*
Compile : *OBJECT 3*
<__main__.CompilerThread object at 0x00CD9470>
Start : *OBJECT 3*
Compiler result : *OBJECT 3* *OBJECT 3*
Compile : *OBJECT 3*
<__main__.CompilerThread object at 0x00CD9470>
Start : *OBJECT 3*
Compiler result : *OBJECT 3* *OBJECT 3*

OBJECT 3 run 2 times and OBJECT 2 never ?!?

Any idea ? Maybe something related to Threads ?
Thanks for your help.



From arkanes at gmail.com  Tue Oct  9 16:43:49 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 15:43:49 -0500
Subject: RuntimeWarning: tp_compare
In-Reply-To: <fegojh01rmh@news5.newsguy.com>
References: <fegojh01rmh@news5.newsguy.com>
Message-ID: <4866bea60710091343sbad2ba1w4236d3d5c7c4aeff@mail.gmail.com>

On 10/9/07, Bruno Barberi Gnecco
<brunobgDELETETHIS at users.sourceforge.net> wrote:
>         I'm getting the following exception when I call an external extension
> (pytst):
>
> /usr/lib/python2.5/threading.py:697: RuntimeWarning: tp_compare didn't return -1 or -2 for
> exception
>    return _active[_get_ident()]
> Traceback (most recent call last):
>    File "testDataMiner2.py", line 77, in <module>
>      testPlace()
>    File "testDataMiner2.py", line 41, in testPlace
>      data = db.getDescription(event['id'])
>    File "testDataMiner2.py", line 28, in getDescription
>      return self.getRow(query, (id,))
>    File "../database.py", line 73, in getRow
>      self.readlock.acquire()
>    File "/usr/lib/python2.5/threading.py", line 94, in acquire
>      me = currentThread()
>    File "/usr/lib/python2.5/threading.py", line 697, in currentThread
>      return _active[_get_ident()]
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xfa' in position 52: ordinal
> not in range(128)
> awer
>  > /usr/lib/python2.5/threading.py(700)currentThread()
> -> return _DummyThread()
>
>
>         Note that the error occurs *after* the call that I isolated as
> affecting it (pytst.scan(), in the case). This doesn't happen for simple,
> isolated cases, but googling for "tp_compare threading" shows a lot of
> similar issues. Does anybody here know what this could be about? Any ideas
> to debug or work around it?
>

The various thread issues in the traceback aside, it looks like the
problem is that you passed a unicode object to pytst, which only
accepts plain (ascii) strings.


From max at alcyone.com  Mon Oct 22 06:34:00 2007
From: max at alcyone.com (Erik Max Francis)
Date: Mon, 22 Oct 2007 03:34:00 -0700
Subject: if..else stmt
In-Reply-To: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
References: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
Message-ID: <rM6dnXDCPZcE4YHanZ2dnUVZ_gKdnZ2d@speakeasy.net>

bigden007 wrote:

> I have a if..else statement in my script. The statements all execute
> fine, but the problem is , even if the IF part of the statement is
> true, the else part executes as well. The verion of pythin i use 2.5
> Any help is appreciatiated.

You're doing something wrong.  Without seeing actual code, it's 
impossible to say what.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   So little time, so little to do.
    -- Oscar Levant


From oruccim at gmail.com  Fri Oct  5 12:04:25 2007
From: oruccim at gmail.com (oruccim at gmail.com)
Date: Fri, 05 Oct 2007 09:04:25 -0700
Subject: picture filter
Message-ID: <1191600265.590444.239110@57g2000hsv.googlegroups.com>

hii my friends
? want to a filter for porn picture
if you know , please help me :S:S
how  do ? separate porn form not porn
I don't want my web site porn;)
(my english bad I hope understant it. very very thans )



From acherry at btinternet.com  Wed Oct 17 03:34:27 2007
From: acherry at btinternet.com (Adrian Cherry)
Date: 17 Oct 2007 08:34:27 +0100
Subject: Simple HTML template engine?
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<Xns99CA56F79D96Fapc@10.15.188.42>
	<47150ce8$0$26767$426a74cc@news.free.fr>
Message-ID: <Xns99CC59E3B3F1Bapc@10.15.188.42>

Bruno Desthuilliers <bdesth.quelquechose at free.quelquepart.fr> 
wrote in news:47150ce8$0$26767$426a74cc at news.free.fr:

> 
> Did you read the OP's question ?-)

Yup, as much as anyone else has. Why?

Adrian



From nagle at animats.com  Wed Oct 10 18:36:43 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 10 Oct 2007 22:36:43 GMT
Subject: M2Crypto possible intermittent bug
In-Reply-To: <UO7Pi.11918$JD.8995@newssvr21.news.prodigy.net>
References: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>
	<UO7Pi.11918$JD.8995@newssvr21.news.prodigy.net>
Message-ID: <%tcPi.58508$YL5.4581@newssvr29.news.prodigy.net>

John Nagle wrote:
> John Nagle wrote:
>>   I just "upgraded" from M2Crypto 0.17 to M2Crypto 0.18, and I'm
>> running my regression tests.  I'm seeing occasional cases where
>> M2Crypto raises the exception SSL.SSLError, and the associated
>> error is "(0, 'Error')", which is the bogus error you get if you feed 
>> 0 to
>> "perror".  It failed once on "verisign.com"'s cert, then worked
>> on the next try.
>>
>>   This is on Windows, running Python 2.4 (which is what M2Crypto
>> supports on Windows.)
>>
>>   I'm trying to make this reproduceable.  More later.
>>
>>                     John Nagle
> 
>    Still trying to reproduce this.  Every time except the first,
> the regression test passed.  More later.  Might be an uninitialized
> variable in a DLL, or something like that.
> 
>                 John Nagle

     Still having trouble reproducing the problem. But somewhere,
something raised that bogus no-error exception three times.
Anything that returns "(0, 'Error')" as exception data is a bug.

					John Nagle


From stefan.arentz at gmail.com  Tue Oct  9 10:56:30 2007
From: stefan.arentz at gmail.com (Stefan Arentz)
Date: 09 Oct 2007 16:56:30 +0200
Subject: Mixing Python and C classes in a module
Message-ID: <87wstwibfl.fsf@keizer.soze.com>


Is it possible to mix classes defined in both Python and C in the same
module? Ideally I would like to be able to do:

 from some.module import MyPythonClass, MyCClass

I guess that would mean that this would look like this on disk:

 some/
   __init__.py
   module.py      (contains MyPythonClass)
   module.so      (contains MyCClass)

But would this work?

 S.


From mikhail.savitsky at gmail.com  Wed Oct 31 03:42:26 2007
From: mikhail.savitsky at gmail.com (mikhail.savitsky at gmail.com)
Date: Wed, 31 Oct 2007 07:42:26 -0000
Subject: Python and SQLite release cycles
Message-ID: <1193816546.161429.306130@v3g2000hsg.googlegroups.com>

Hi,

Official Python distro is very stable, with release cycle of around 1
year. However, to include the new version of SQLite, which has a much
shorter release cycle, one has to rebuild the main Python distribution
(to compile with the new SQLite headers) - this is from Python docs.
Therefore, inclusion of PySQLite in Python-2.5.1 distro effectively
shrinks the Python release cycle to that of SQLite. I would not have
minded, except that we have many workstations and pretty arcane
deployment procedure, making frequent redeployment of Python quite
painful.
Has anyone considered this problem and maybe a work-around?

Many thanks in advance,

Mikhail



From marco at sferacarta.com  Fri Oct 26 06:30:13 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Fri, 26 Oct 2007 12:30:13 +0200
Subject: Iteration for Factorials
In-Reply-To: <1193264370.786983.242180@y27g2000pre.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
	<mailman.336.1193075066.13605.python-list@python.org>
	<1193264370.786983.242180@y27g2000pre.googlegroups.com>
Message-ID: <TkjUi.2664$%L6.232@tornado.fastwebnet.it>

marek.rocki at wp.pl wrote:

> class fact_0(object):
> 	value = 1
[...
> 	def __new__(self, n_):
> 		class spanish_inquisition(object):
> 			__metaclass__ = fact_meta
> 			n = n_
> 		return spanish_inquisition()


You wrote lots of boilerplate to hide the fact you're cheating, didn't you?

The OP explicitly asked for an iterative procedure.

btw... writing a test unit to check the tested code is not calling 
itself.. could be interesting



From xah at xahlee.org  Mon Oct 29 18:30:24 2007
From: xah at xahlee.org (Xah Lee)
Date: Mon, 29 Oct 2007 15:30:24 -0700
Subject: emacs lisp as text processing language...
Message-ID: <1193697024.171112.28490@t8g2000prg.googlegroups.com>

Text Processing with Emacs Lisp

Xah Lee, 2007-10-29

This page gives a outline of how to use emacs lisp to do text
processing, using a specific real-world problem as example. If you
don't know elisp, first take a gander at Emacs Lisp Basics.

HTML version with links and colors is at:
http://xahlee.org/emacs/elisp_text_processing.html

Following this post as a separate post, is some relevant (i hope)
remark about Perl and Python.

---------------------------------
THE PROBLEM

----------------
Summary

I want to write a elisp program, that process a list of given files.
Each file is a HTML file. For each file, i want to remove the link to
itself, in its page navigation bar. More specifically, each file have
a page navigation bar in this format:

<div class="pages">Goto Page: <a href="1.html">1</a>, <a
href="2.html">2</a>, <a href="3.html">3</a>, <a href="4.html">3</
a>, ...</div>.

where the file names and link texts are all arbitrary. (not as 1, 2, 3
shown here.) The link to itself needs to be removed.

----------------
Detail

My website has over 3 thousand files; many of the pages is a series.
For example, i have a article on Algorithmic Mathematical Art, which
is broken into 3 HTML pages. So, at the bottom of each page, i have a
page navigation bar with code like this:

<div class="pages">Goto Page: <a href="20040113_cmaci_larcu.html">1</
a>, <a href="cmaci_larcu2.html">2</a>, <a href="cmaci_larcu3.html">3</
a></div>

In a browser, it would look like this:
i/page tag

Note that the link to the page itself really shouldn't be a link.

There are a total of 134 pages scattered about in various directories
that has this page navigation bar. I need some automated way to
process these files and remove the self-link.

I've been programing in perl professionally from 1998 to 2002 full
time. Typically, for this task in perl (or Python), i'd open each
file, read in the file, then use regex to do the replacement, then
write out the file. For replacement that span over several lines, the
regex needs to act on the whole file (as opposed to one line at a
time). The regex can become quite complex or reaching its limit. For a
more robust solution, a XML/HTML parser package can be used to read in
the file into a structured representation, then process that. Using a
HTML parser is a bit involved. Then, as usual, one may need to create
backups of the original files, and also deal with maintaining the
file's meta info such as keeping the same permission bits. In summary,
if the particular text-processing required is not simple, then the
coding gets fairly complex quickly, even if job is trivial in
principle.

With emacs lisp, the task is vastly simplified, because emacs reads in
a file into its buffer representation. With buffers, one can move a
pointer back and forth, search and delete or insert text arbitrarily,
with the entire emacs lisp's suite of functions designed for
processing text, as well the entire emacs environment that
automatically deals with maintaining file. (symbolic links, hard
links, auto-backup system, file meta-info maintaince, file locking,
remote files... etc).

We proceed to write a elisp code to solve this problem.

---------------------------------
SOLUTION

Here's are the steps we need to do for each file:

    * open the file in a buffer
    * move cursor to the page navigation text.
    * move cursor to file name
    * run sgml-delete-tag (removes the link)
    * save file
    * close buffer

We begin by writing a test code to process a single file.

(defun xx ()
  "temp. experimental code"
  (interactive)
  (let (fpath fname mybuffer)
    (setq fpath "/Users/xah/test1.html")
    (setq fname (file-name-nondirectory fpath))
    (setq mybuffer (find-file fpath))
    (search-forward "<div class=\"pages\">Goto Page:")
    (search-forward fname)
    (sgml-delete-tag 1)
    (save-buffer)
    (kill-buffer mybuffer)))

First of all, create files test1.html, test2.html, test3.html in a
temp directory for testing this code. Each file will contain this page
navigation line:

<div class="pages">Goto Page: <a href="test1.html">some1</a>, <a
href="test2.html">another</a>, <a href="test3.html">xyz3</a></div>

Note that in actual files, the page-nav string may not be in a single
line.

The elisp code above is fairly simple and self-explanatory. The file
opening function find-file is found from elisp doc section ?Files?.
The cursor moving function search-forward is in ?Searching and
Matching?, the save or close buffer fuctions are in section ?Buffer?.

Reference: Elisp Manual: Files.

Reference: Elisp Manual: Buffers.

Reference: Elisp Manual: Searching-and-Matching.

The interesting part is calling the function sgml-delete-tag. It is a
function loaded by html-mode (which is automatically loaded when a
html file is opened). What sgml-delete-tag does is to delete the tag
that encloses the cursor (both the opening and closing tags will de
deleted). The cursor can be anywhere in the beginning angle bracket of
the opening to the ending angle bracket of the closing tag. This sgml-
delete-tag function helps us tremendously.

Now, with the above code, our job is essentially done. All we need to
do now is to feed it a bunch of file paths. First we clean the code up
by writing it to take a path as argument.

(defun my-modfile-page-tag (fpath)
  "Modify the HTML file at fpath."
  (let (fname mybuffer)
    (setq fname (file-name-nondirectory fpath))
    (setq mybuffer (find-file fpath))
    (search-forward "<div class=\"pages\">Goto Page:")
    (search-forward fname)
    (sgml-delete-tag 1)
    (save-buffer)
    (kill-buffer mybuffer)))

Then, we test this modified code by evaluating the following code:

(my-modfile-page-tag "/Users/xah/test1.html")

To complete our task, all we have to do now is get the list of files
that contains the page-nav tag and feed them to my-modfile-page-tag.

To generate a list of files, we can simply use unix's ?find? and
?grep?, like this:

find . -name "*\.html" -exec grep -l '<div class="pages">' {} \;

For each line in the output, we just wrap a double quote around it to
make it a lisp string. Possibly also insert the full path by using
string-rectangle, to construct the following code:

(mapcar (lambda (x) (my-modfile-page-tag x))
        (list
"/Users/xah/web/3d/viz.html"
"/Users/xah/web/3d/viz2.html"
"/Users/xah/web/dinju/Khajuraho.html"
"/Users/xah/web/dinju/Khajuraho2.html"
"/Users/xah/web/dinju/Khajuraho3.html"
;... 100+ lines
         )
        )

The mapcar and lambda is a lisp idiom of looping thru a list. We
evaluate the code and we are all done!

Emacs is beautiful!

(a separate post follows on the relevance of Perl and Python)

  Xah
  xah at xahlee.org
? http://xahlee.org/



From michele.simionato at gmail.com  Mon Oct 15 07:51:41 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Mon, 15 Oct 2007 11:51:41 -0000
Subject: Twisted (or for loops ?) madness
In-Reply-To: <1192446109.954833.322080@v29g2000prd.googlegroups.com>
References: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
	<1192443010.957983.81970@q3g2000prf.googlegroups.com>
	<1192444397.510886.48990@i13g2000prf.googlegroups.com>
	<1192446109.954833.322080@v29g2000prd.googlegroups.com>
Message-ID: <1192449101.901488.240680@v29g2000prd.googlegroups.com>

On Oct 15, 1:01 pm, looping <kad... at gmail.com> wrote:

> So if I understand what Michele wrote (thanks too), when a function is
> defined (with def), no scope is saved and every variable value not
> passed in parameter is lost ?  It means that variable value come from
> the outer scope when the function is called ?

Yes, in my example you get the value of "i" at the function *calling*
time,
not at the function definition time. If you want to store the value at
the
definition time, you must use the default argument trick:

funclist = []
for i in 1,2,3:
  def f(i=i):
     print i
  funclist.append(f)

       Michele Simionato



From david at nospam.spam  Thu Oct 11 00:17:05 2007
From: david at nospam.spam (david)
Date: Thu, 11 Oct 2007 14:17:05 +1000
Subject: howto add a sub-directory to the searchpath / namespace ?
In-Reply-To: <mailman.53.1192057415.927.python-list@python.org>
References: <mailman.45.1192048895.927.python-list@python.org>	<Np-dnQSN1Ysyo5DanZ2dnUVZ_tbinZ2d@comcast.com>
	<mailman.53.1192057415.927.python-list@python.org>
Message-ID: <13gr8u2o9tdm062@corp.supernews.com>

r" indicates a 'regular expression' string, normally
called a raw string. It means that \ characters are
treated using the regex syntax rather than the c syntax.

In the regex syntax, \ characters are escape characters
only at the end of the string, which allows you to
easily use Windows directory notation as long as you
don't need to end a path with a \

sys.path.append("c:\\code\\newcode")
sys.path.append(r"c:\code\newcode")

The os.path module contains additional path handling methods.

[david]


stef mientki wrote:
> Larry Bates wrote:
>> stef mientki wrote:
>>  
>>> hello,
>>>
>>> my program has become a bit large,
>>> and now I want to split the files over several subdirectories.
>>> So in the example shown below, I just moved the files f1.py and f2.py 
>>> to a deeper subdirectory.
>>>
>>> basedirectory\
>>>    mainfile.py
>>>    file1.py
>>>    file2.py
>>>    subdir1\
>>>       __init__.py
>>>       f1.py
>>>       f2.py
>>>
>>> Now I don't want (even can't) change my program,
>>> to change imports from
>>>    from f1 import something
>>> into
>>>    from subdir1.f1 import something
>>> simply because f1.py and f2.py are python files dropped by users
>>> and I do not know on forehand what will be dropped.
>>>
>>> I looked into the description of __init__.py,
>>> in the hope I could make f1.py and f2.py available as if they were in 
>>> the basedirectory,
>>> but i couldn't find a way.
>>>
>>> Is there a way to make f1.py and f2.py available as if they were 
>>> located in the base directory,
>>> without knowing their names (so in general all py-files in the 
>>> subdir1)  ??
>>>
>>> thanks,
>>> Stef Mientki
>>>
>>>
>>>     
>> Put basedirectory\subdir in the PYTHONPATH environment variable or
>>
>> os.path.append(r'basedirectory\subdir1')
>>
>> in the body of your program.
>>
>>   
> thanks Larry,
> after a bit of fiddling, I think "os." must be "sys."
> and basedirectory shouldn't be in.
> so it becomes
>    sys.path.append  ( r'subdir1' )
> But what the .. is that "r" in front of the appended path ?
> 
> cheers,
> Stef Mientki
> 
> 
>> -Larry
>>   
> 


From besturk at gmail.com  Wed Oct 31 17:09:10 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 31 Oct 2007 14:09:10 -0700
Subject: 3 number and dot..
In-Reply-To: <1193863848.080615.191090@v3g2000hsg.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<1193863848.080615.191090@v3g2000hsg.googlegroups.com>
Message-ID: <1193864950.775008.205630@57g2000hsv.googlegroups.com>

On Oct 31, 10:50 pm, Roberto Bonvallet <rbonv... at gmail.com> wrote:
> On 31 oct, 16:58, Abandoned <best... at gmail.com> wrote:
>
>
>
> > Hi..
> > I want to do this:
> > for examle:
> > 12332321 ==> 12.332.321
>
> > How can i do?
> >>> x = 12332321
> >>> '.'.join(''.join(i for n, i in g) for k, g in groupby(enumerate(reversed(str(x))), lambda (n, i): n//3))[::-1]
> '12.332.321'
>
> --
> Roberto Bonvallet

Thank you but it give me this error:
NameError: name 'groupby' is not defined



From loic.mahe at nospam.fr  Tue Oct 23 06:45:30 2007
From: loic.mahe at nospam.fr (Loic Mahe)
Date: Tue, 23 Oct 2007 12:45:30 +0200
Subject: How to implement function like this?
In-Reply-To: <5o5vliFld8c9U4@mid.uni-berlin.de>
References: <ffkba5$1u6$1@wake.carmen.se>
	<5o5sqtFld8c9U3@mid.uni-berlin.de>	<471dc352$0$5091$ba4acef3@news.orange.fr>
	<5o5vliFld8c9U4@mid.uni-berlin.de>
Message-ID: <471dd0c4$0$5099$ba4acef3@news.orange.fr>

Marc 'BlackJack' Rintsch a ?crit :
> On Tue, 23 Oct 2007 11:48:08 +0200, Loic Mahe wrote:
> 
>> even shorter:
>>
>> def funcA(tarray):
>>      s = min(len(tarray), 3)
>>      return [2, 3, 4][0:s] + [e for e in funcB(3-s)[0:3-s]]
> 
> Why the list comprehension!?
> 
> Ciao,
> 	Marc 'Blackjack' Rintsch

sorry I just read too fast
and thought he worked with lists ...
anyway 'e for e in' and so list comprehension was useless here

def funcA(tarray):
      s = min(len(tarray), 3)
      return (2, 3, 4,)[0:s] + funcB(3-s)[0:3-s]

this is ok if funcB(...) returns a tuple ...
if it returns a list just add: tuple(funcB(...))

note: list comprehension transforms a tuple into a list


From crazy420fingers at gmail.com  Mon Oct  8 20:44:03 2007
From: crazy420fingers at gmail.com (crazy420fingers at gmail.com)
Date: Tue, 09 Oct 2007 00:44:03 -0000
Subject: Memory leak/gc.get_objects()/Improved gc in version 2.5
Message-ID: <1191890643.412806.121180@r29g2000hsg.googlegroups.com>

I'm running a python program that simulates a wireless network
protocol for a certain number of "frames" (measure of time).  I've
observed the following:

1. The memory consumption of the program grows as the number of frames
I simulate increases.

To verify this, I've used two methods, which I invoke after every
frame simulated:

--  Parsing the /proc/<pid>/status file as in:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/286222
--  Using ps vg | grep python | awk '!/grep/ {print " ",$8}'  in an
os.system() call.

The memory usage vs. frame number graph shows some big "jumps" at
certain points, and, after a large number of frames, shows a steady
upward slope

2. I think I've verified that the objects I instantiate are actually
freed-- I'm therefore assuming that this "leak" is "caused" by
python's garbage collection mechanism. I count the number of objects I
generate that are being tracked by gc as follows:

    gc.collect()
    objCount = {}
    objList = gc.get_objects()
    for obj in objList:
        if getattr(obj, "__class__", None):
            name = obj.__class__.__name__
            if objCount.has_key(name):
                objCount[name] += 1
            else:
                objCount[name] = 1

    for name in objCount:
        print name, " :", objCount[name]

   del objList

Running this snippet every hundred frames or so, shows that the number
of objects managed by gc is not growing.

I upgraded to Python 2.5. in an attempt to solve this problem. The
only change in my observations from version 2.4 is that the absolute
memory usage level seems to have dropped. However, I still see the
jumps in memory usage at the same points in time.

Can anybody explain why the memory usage shows significant jumps (~200
kB or ~500 kb) over time (i.e. "frames") even though there is no
apparent increase in the objects managed by gc? Note that I'm calling
gc.collect() regularly.

Thanks for your attention,

Arvind



From artur.siekielski at gmail.com  Thu Oct 11 11:39:29 2007
From: artur.siekielski at gmail.com (Artur Siekielski)
Date: Thu, 11 Oct 2007 15:39:29 -0000
Subject: Declarative properties
In-Reply-To: <1192112491.859246.148620@19g2000hsx.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<1192112491.859246.148620@19g2000hsx.googlegroups.com>
Message-ID: <1192117169.037931.285890@g4g2000hsf.googlegroups.com>

On Oct 11, 4:21 pm, "sjdevn... at yahoo.com" <sjdevn... at yahoo.com> wrote:
> In practice, it turns out to be a lot less work to deal with that
> occasionally than to always deal with lugging around internal
> attributes and external properties when they're really not needed.  By
> writing everything as properties up front you're just creating more
> work for yourself, and it's generally considered bad practice in
> Python to have default getters/setters (whether part of a property or
> not).

Ok, I appreciate your and Marc's argument. So I see that a pythonic
way is
using public attributes, and it works in real life. Automatic
"generation" of
getters/setters is a nice thing when using Java style of properties,
ie. no
public fields.

> > 2. Properties define (a part of) public interface of a class. When
> > using fields for public
> > access, you must tell this explicitly in documentation, or use name
> > convention.
>
> Property vs. attribute doesn't make any difference here: both of them
> are public, and part of the external interface, unless they're named
> with a leading underscore.

Nice thing about properites is that they are defined in more
declarative way -
in class body. Attributes are "defined" in a piece of code (which can
be long
and can contain loops etc.) by assigning a value to 'self'.

> > 3. Using properties as first-class objects gives possibilities to use
> > declarative approaches
> > for constructing them.
>
> This doesn't make any sense.  Properties and attributes are both
> objects in python.

Attribute is an object which has value specific for the time it's get
from object.
It is separated from containing object - relation to it is lost.
Python property is an object that describes how to get/set a specific
attribute of
containing object - any time. It describes relationship between the
two.

By declarative method I mean something like a function that takes a
property object
and returns modified property object:

def not_none(prop):
    def new_fset(self, obj):
        if obj is not None:
            prop.fset(self, obj)
        else:
            raise 'Cannot set None value'
    return property(prop.fget, new_fset, prop.fdel)

And then:

class Person(object):
...
   name = not_none( property(_get_name, _set_name) )



From commander_coder at hotmail.com  Thu Oct 11 10:34:11 2007
From: commander_coder at hotmail.com (commander_coder at hotmail.com)
Date: Thu, 11 Oct 2007 07:34:11 -0700
Subject: Advice on long running processes
Message-ID: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>

Hello,

I write a lot of CGI scripts, in Python of course.  Now I need to
convert some to long-running processes.  I'm having trouble finding
resources about the best practices to do that.

I've found a lot of email discussions that say something like, "You
need to educate yourself about the differences when you have long-
running processes" but I've not had a lot of luck with finding things
that explain the differences.  I've seen some talk about database
timeouts, for instance, but I'm not sure I understand the problems.
Can anyone here suggest some resources?  I'd be happy with web sites,
with buying a book, anything.

I ask here because I write in Python and so if those resources used
Python then that would be super.

Thanks,
Jim



From kyosohma at gmail.com  Mon Oct  8 09:54:45 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 08 Oct 2007 13:54:45 -0000
Subject: changes on disk not visible to script ?
In-Reply-To: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
References: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
Message-ID: <1191851685.706365.58600@50g2000hsm.googlegroups.com>

On Oct 8, 8:27 am, Bruce <epo... at gmail.com> wrote:
> Hi,
> I am trying to have my script automate a task, by using os.system, but
> I cant get it to work.
>
> manually, outside the script I can do this thing by
>
> C:\echo argument_file | the_program
>
> This works very well when argument_file is created before my script is
> started
>
> In the script I try to do it like this:
> f = open("argument_file",'w')
> f.write(argument)
> f.close()
> cmd = "echo %s | %s"%(argument_file,the_program)
> os.system(cmd)
>
> The script works if the argument_file is already in the directory
> before os.system(cmd), but the script must create argument_file before
> using os.system. Problem is the_program cannot find argument_file or
> the_program cannot find anything inside argument_file.
>
> The python script cannot see changes on disk. In the "My computer"
> window, if I do a refresh, I can see the argument_file is created
> during the script. I have also tried delays with time.sleep right
> after creating the file, but still no success.


You can test for the existence of the file using os.path.exists() to
prove whether or not Python can "see" the file. You can also have
Python read the file and show what it finds, if anything. I think you
can flush data to the file before closing it...


>
> Is there some way to around this? must use windows I`m afraid.

If the path to the file or the program's executable has spaces in it,
you may have issues. If so, you'll need to put double quotes around
the path(s) and single or triple quote the string. Also, you might try
it with the subprocess module.

Hopefully that gave you some ideas.

Mike




From kmtracey at gmail.com  Wed Oct 10 15:36:39 2007
From: kmtracey at gmail.com (Karen Tracey)
Date: Wed, 10 Oct 2007 15:36:39 -0400
Subject: How can Python print the value of an attribute but complain it
	does not exist?
In-Reply-To: <1192043025.291748.198740@19g2000hsx.googlegroups.com>
References: <1192043025.291748.198740@19g2000hsx.googlegroups.com>
Message-ID: <af3536270710101236w6ddf22b1h3c082fd3e3f1c466@mail.gmail.com>

On 10/10/07, Emre Sevinc <emre.sevinc at gmail.com> wrote:
[snip]

$ python generatefeedvector-debug.py
> Signal vs. Noise
> Traceback (most recent call last):
>   File "generatefeedvector-debug.py", line 37, in ?
>     title = getwordcounts(feedurl)
>   File "generatefeedvector-debug.py ", line 21, in getwordcounts
>     print d.feed.title
>   File "/var/lib/python-support/python2.4/feedparser.py", line 236, in
> __getattr__
>     raise AttributeError, "object has no attribute '%s'" % key
> AttributeError: object has no attribute 'title'
>
>
> The strange thing is that it DOES print the value d.feed.title then
> complains AttributeError: object has no attribute 'title'. What am I
> doing wrong?
>
> The file feedlist1-2.txt includes just a single line:
>
> $ cat feedlist1-2.txt
> http://feeds.feedburner.com/37signals/beMH


I'll bet your feedlist1-2.txt file has a blank line at the end.  Your
program is printing the title for the first line and then choking when you
try to retrieve the title for the blank line.

Karen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/1f1496fb/attachment.html>

From mdipierro at cti.depaul.edu  Fri Oct 19 19:33:51 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Fri, 19 Oct 2007 18:33:51 -0500
Subject: __main__ : What is this?
In-Reply-To: <496954360710191629x3fc82871s334f15c2d5a48530@mail.gmail.com>
References: <496954360710191629x3fc82871s334f15c2d5a48530@mail.gmail.com>
Message-ID: <D7657FF0-D00D-426F-9242-E215A5DC202B@cti.depaul.edu>

if the .py file is imported as a module that condition is false else
(if the .py file is executed) that condition is true

On Oct 19, 2007, at 6:29 PM, Robert Dailey wrote:

> Hi,
>
> I've read various portions of the Python 2.5 documentation in an
> attempt to figure out exactly what the following condition represents:
>
> if __name__ == "__main__":
>     main()
>
> However, I was not able to determine what it is actually checking for.
> Could someone point me in the way of a tutorial or explain this for
> me? Thanks.
> --
> http://mail.python.org/mailman/listinfo/python-list



From ricaraoz at gmail.com  Sun Oct  7 08:03:00 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Sun, 07 Oct 2007 09:03:00 -0300
Subject: How to create a file on users XP desktop
In-Reply-To: <1191735169.441525.106060@o80g2000hse.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
Message-ID: <4708CAF4.7020206@bigfoot.com>

Matimus wrote:
> On Oct 6, 8:31 pm, goldtech <goldt... at worldpost.com> wrote:
>> Can anyone link me or explain the following:
>>
>> I open a file in a python script. I want the new file's location to be
>> on the user's desktop in a Windows XP environment.  fileHandle = open
>> (....., 'w' )  what I guess I'm looking for is an environmental
>> variable that will usually be correct on most XP desktops and will
>> work in the open statement. Or is there another way?
>>
>> Thanks
> 
> I've always used 'USERPROFILE'. I'm not sure how standard it is, but I
> have never run into any issues.
> 
> Code for your perusal:
> [code]
> import os, os.path
> prof_path = os.environ['USERPROFILE']
> filename = os.path.join(prof_path,'Desktop','filename.txt')
> f = open(filename,'w')
> try:
>     # do stuff with f
> finally:
>     f.close()
> [/code]
> 
> Matt
> 

You are assuming the system is not localized, that won't work if you
distribute your applications internationally. In my system it is not
"Desktop", it is "Escritorio", and I guess it will vary with every
locale. Does someone know a way to find out what name does the desktop
have?


From brainsludge at gmail.com  Tue Oct 23 20:07:15 2007
From: brainsludge at gmail.com (Brainsludge)
Date: Tue, 23 Oct 2007 17:07:15 -0700
Subject: Pythonw.exe exits prematurely
In-Reply-To: <1193178936.407815.146200@z24g2000prh.googlegroups.com>
References: <1193176910.507794.136960@y27g2000pre.googlegroups.com>
	<1193178936.407815.146200@z24g2000prh.googlegroups.com>
Message-ID: <1193184435.623230.22240@q5g2000prf.googlegroups.com>

Hi Matt,

Your reply is much appreciated.

So let me see if I understand. When console is running, it dumps
stdout to console, the buffer is flushed regularly, and everything is
fine and dandy. But when running without console, the stdout buffer
fills up because it has no physical handle to dump to, an exception is
thrown, and the process bails.

The graceful exit I mentioned before (the cleanup routine) was likely
due to a try/except I wrapped around the polling loop that handled the
exception you described.

I'll give it a try. Thanks!
Brian

On Oct 23, 4:43 pm, Matimus <mccre... at gmail.com> wrote:
> > I am running WinXP SP2 with Python 2.5.1 and encountered the following
> > issue:
>
> > I wrote a script that logs into my mail server, and checks for new
> > messages every 20 seconds. When a new message is found, it displays a
> > Windows tool tip and prints a line to console indicating a new
> > message.
>
> > When I run the script with python.exe (console), the script runs fine
> > and checks for new messages in perpetuity (as it should). However,
> > when I run the script with pythonw.exe (no console), the script
> > prematurely exits after 10 or 15 minutes. For those 15 minutes, it
> > works as it should, displaying tool tips when new messages arrive.
> > Furthermore, when it exits prematurely, it appears to be exiting
> > gracefully (I have an exit routine that logs out of the mail server
> > and cleans up).
>
> > Does anyone know why this might be the case? The lines printed to
> > console are purely for diagnostic purposes. Otherwise, the two
> > processes should be identical.
>
> You say it exits gracefully, I'm not sure I know what you mean. My
> guess is that you are writing to stdout, and when the buffer fills up
> and tries to dump the program exits with an exception (but returns
> 0).
>
> I've run into something similar before, you can reproduce it with
> this:
> [code]
> import sys
>
> f2 = open("bo.err", "w")
> sys.stderr = f2
> for i in range(10000):
>     print i
> [/code]
>
> Run with pythonw then look at "bo.err" to see the exception.
>
> You can either stop printing to stdout and send the stuff somewhere
> else (maybe use the logging module), or you can assign stdout and
> stderr to nul.
>
> [code]
> import sys
> import os
>
> nul = open(sys.devnull,'w')
> sys.stdout = nul
> sys.stderr = nul
>
> # The rest of your code
> [/code]
>
> Matt




From gagsl-py2 at yahoo.com.ar  Wed Oct 17 23:36:58 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 00:36:58 -0300
Subject: Need recommendations on mock object packages
References: <slrnfhcerd.dp7.matt@coleridge.tplus1.com>
Message-ID: <op.t0dizwg3x6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 17 Oct 2007 13:42:25 -0300, Matthew Wilson <matt at tplus1.com>  
escribi?:

> What are the most popular, easiest to use, and most powerful mock
> object packages out there?

mock libraries were discussed recently on this list, search the archives.
I like minimock: http://blog.ianbicking.org/minimock.html

-- 
Gabriel Genellina



From khemkaamit at gmail.com  Wed Oct  3 05:30:13 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Wed, 3 Oct 2007 15:00:13 +0530
Subject: generating range of numbers
In-Reply-To: <1191403125.540152.72320@22g2000hsm.googlegroups.com>
References: <1191403125.540152.72320@22g2000hsm.googlegroups.com>
Message-ID: <1360b7230710030230p619dab06scfcf512686e356c8@mail.gmail.com>

On 10/3/07, vimal <cool.vimalsmail at gmail.com> wrote:
> hi all,
>
>      i am new to python.....
>      i just want to generate numbers in the form like:
>
>     1,2,4,8,16,32.....to a maximum of 1024
>
>     using a range function

[2**i for i in range(11)]

This is a list comprehension, for more have a look at
http://docs.python.org/tut/node7.html#SECTION007140000000000000000

Cheers,

-- 
----
Amit Khemka
website: www.onyomo.com
wap-site: www.owap.in


From python at rcn.com  Wed Oct 31 13:37:19 2007
From: python at rcn.com (Raymond Hettinger)
Date: Wed, 31 Oct 2007 10:37:19 -0700
Subject: marshal vs pickle
In-Reply-To: <1193838300.998229.33380@v3g2000hsg.googlegroups.com>
References: <mailman.669.1193815903.13605.python-list@python.org>
	<1193838300.998229.33380@v3g2000hsg.googlegroups.com>
Message-ID: <1193852239.801436.326320@z24g2000prh.googlegroups.com>

On Oct 31, 6:45 am, Aaron Watters <aaron.watt... at gmail.com> wrote:
>  I like to use
> marshal a lot because it's the absolutely fastest
> way to store and load data to/from Python. Furthermore
> because marshal is "stupid" the programmer has complete
> control.  A lot of the overhead you get with the
> pickles which make them generally much slower than
> marshal come from the cleverness by which pickle will
> recognized shared objects and all that junk.  When I
> serialize,

I believe this FUD is somewhat out-of-date.  Marshalling
became smarter about repeated and shared objects.  The
pickle module (using mode 2) has a similar implementation
to marshal and both use the same tricks, but pickle is
much more flexible in the range of objects it can handle
(i.e. sets became marshalable only recently while deques
can pickle but not marshal)

For the most part, users are almost always better-off
using pickle which is version independent, fast, and
can handle many more types of objects than marshal.

Also FWIW, in most applications of pickling/marshaling,
the storage or tranmission times dominate computation
time. I've gotten nice speed-ups by zipping the pickle
before storing, transmitting, or sharing (RPC apps
for example).


Raymond



From marcsgbrevkonto at gmail.com  Sun Oct  7 09:24:57 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 13:24:57 -0000
Subject: Newbie packages Q
In-Reply-To: <mailman.1640.1191759412.2658.python-list@python.org>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
Message-ID: <1191763497.852128.130710@k79g2000hse.googlegroups.com>

On Oct 7, 2:16 pm, Steve Holden <st... at holdenweb.com> wrote:
> Would it hep to observe that the atest and btest submodules attemot to
> import each other?
>
> There is no reason I can see for apack and bpack to be subpackages. Why
> not just rename atest.py as apack.py at the same level as the Test
> package's __init__.py, and in the same way make btest.py bpack.py.
>
> Then the __init__.py can do:
>
> from apack import printA
> from bpack import printB
>
> and your main program can do
>
> import Test
> Test.printA(...)

This is away of doing it, but not a very "Package" way.
The situation is I want to make a package split up in sub dir's. And
each sub dir need to call the other.
And I cant see why it will not work, the way i do it.

And the atest and btest, shouldn't they be able to import each
other??



From duncan.booth at invalid.invalid  Wed Oct 17 08:35:20 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 17 Oct 2007 12:35:20 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
Message-ID: <Xns99CC8A3F736D4duncanbooth@127.0.0.1>

Hrvoje Niksic <hniksic at xemacs.org> wrote:

> 
> The current implementation of += uses __add__ for addition and
> __iadd__ for addition that may or may not be in-place.  I'd like to
> know the rationale for that design.
> 

Apart from the obvious short answer of being consistent (so you don't 
have to guess whether or not a+=b is going to do an assignment), I think 
the decision was partly to keep the implementation clean.

Right now an inplace operation follows one of three patterns:

    load a value LOAD_FAST or LOAD_GLOBAL
    do the inplace operation (INPLACE_ADD etc)
    store the result (STORE_FAST or STORE_GLOBAL)

or:

    compute an expression
    DUP_TOP
    LOAD_ATTR
    do the inplace operation
    ROT_TWO
    STORE_ATTR

or:

    compute two expressions
    DUP_TOPX 2
    BINARY_SUBSCR
    do the inplace operation
    ROT_THREE
    STORE_SUBSCR

I'm not sure I've got all the patterns here, but we have at least three 
different cases with 0, 1, or 2 objects on the stack and at least 4 
different store opcodes.

If the inplace operation wasn't always going to store the result, then 
either we would need 4 times as many INPLACE_XXX opcodes, or it would 
have to do something messy to pop the right number of items off the 
stack and skip the following 1 or 2 instructions.

I see from PEP203 that ROT_FOUR was added as part of the implementation, 
so I guess I must have missed at least one other bytecode pattern for 
augmented assignment (which turns out to be slice assignment with a 
stride).


From stef.mientki at gmail.com  Sat Oct  6 18:23:29 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sun, 07 Oct 2007 00:23:29 +0200
Subject: Howto Launch a windows application ?
In-Reply-To: <47040C25.7040303@gmail.com>
References: <47040C25.7040303@gmail.com>
Message-ID: <47080AE1.10608@gmail.com>

I finally found out what was wrong:

stef mientki wrote:
> hello,
>
> I'm trying to launch a windows application,
> but as many others on this list, I've some trouble.
> I read some other threads about this topic,
> but sorry, I still don't understand all this (never heard of pipes).
>
> When I use a batch file, I can launch the bat-file from python,
> and the windows application launched from the batchfile is run perfectly.
>
> Now when I try to run the same windows application from Popen or call,
> nothing happens (or at least it's very fast and produces not the 
> expected output).
>
> Please enlighten me, preferable in "windows-terminology"  ;-)
>
> thanks,
> Stef Mientki
>
> from subprocess import *
>
> cmd =[]
> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
> cmd.append ( '-long-start' )
> cmd.append ( '-d')
> cmd.append ( '-clear' )
> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
> cmd.append ( 
> 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>
> # DOESN'T WORK
> result = call ( cmd )
>
> # Both Popen and call work
> cmd = [ 'd:\\data_actueel\\d7_test_browser\\JALcc.bat' ]
> #output = Popen ( cmd )
> result = call ( cmd )
> print result
>
subprocess performs double quoting (necessary for paths with spaces) 
automatically.
Therefor both the following lines:
    cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
    cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
should become
    cmd.append ( '-s' )
    cmd.append ( ' D:\\PIC-tools\\JAL\\libs2' )
    cmd.append ( '>' )
    cmd.append ( 'd:\\data_actueel\\d7_test_browser\\temp.log' )
then everything works perfect, also with the convenience call "call"
and the redirection.

thank you all for the hints,
cheers,
Stef Mientki




From goldtech at worldpost.com  Mon Oct  8 10:19:43 2007
From: goldtech at worldpost.com (goldtech)
Date: Mon, 08 Oct 2007 07:19:43 -0700
Subject: How to create a file on users XP desktop
In-Reply-To: <mailman.1648.1191778298.2658.python-list@python.org>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
	<4708CAF4.7020206@bigfoot.com> <47090D86.5080805@tim.thechases.com>
	<mailman.1648.1191778298.2658.python-list@python.org>
Message-ID: <1191853183.871616.227350@k79g2000hse.googlegroups.com>


> from win32com.shell import shell, shellcon
>
> desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
>
> </code>

Tim,

How did you learn Win32com?

Other than the O'Reilly book, I've never found a lot of
documentation.

Trying to browse COM in PythonWin is tough - there's tons of stuff in
there. I've never been able to find the Win32com classes, methods,
usage examples when I browse COM in PythonWin.

For example where is, shell.SHGetFolderPath and shellcon.CSIDL_DESKTOP
officially documented?

Did you learn from using Visual C++ or VB? How did you learn this
stuff?

Thanks,
Lee G.



From hniksic at xemacs.org  Tue Oct 30 18:50:19 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Tue, 30 Oct 2007 23:50:19 +0100
Subject: why did these companies choose Tcl over Python
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <87640ojjys.fsf@mulj.homelinux.net>

chewie54 <dfabrizio51 at gmail.com> writes:

>    Mentor Graphics ModelTech VHDL and Verilog simulator
>    Synopsys  Design Compiler and Primetime Static Timing Analyzer
>    Actel FPGA tools.

How old are these tools?  Tcl has been around as an extension language
for a long time, longer than most currently popular scripting
languages.  It is quite possible that some or all of these tools chose
Tcl simply because it was there when they were making the choice.


From richie at entrian.com  Mon Oct  8 09:56:35 2007
From: richie at entrian.com (Richie Hindle)
Date: Mon, 08 Oct 2007 14:56:35 +0100
Subject: changes on disk not visible to script ?
In-Reply-To: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
References: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
Message-ID: <mhdkg3ldt2dnva1sk87hgiu16u323fm2k6@4ax.com>

[Bruce]
> f.close()
> cmd = "echo %s | %s"%(argument_file,the_program)

Either: you are a VB programmer and you've actually typed "f.close" rather
than "f.close()",

Or: you meant "type" (or "cat") rather than "echo",

Or: I need a new crystal ball.  8-)

-- 
Richie Hindle
richie at entrian.com


From martin at v.loewis.de  Sun Oct 28 14:51:49 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 28 Oct 2007 19:51:49 +0100
Subject: Is the subprocess module thread-safe?
In-Reply-To: <kfLUi.48549$RX.33343@newssvr11.news.prodigy.net>
References: <kfLUi.48549$RX.33343@newssvr11.news.prodigy.net>
Message-ID: <4724da45$0$30943$9b622d9e@news.freenet.de>

>    Can the subprocess module be used to launch subprocesses from threads?

The answer to this question ("can") is a clear yes. Notice that this
question is different from the question in the subject.

> Or does the subprocess module affect the entire process context, like
> "fork"?

On POSIX systems, it uses fork(2) - what else could it do? I'm not sure
what effects to the entire process context you are referring to. In
a POSIX system, you can also fork from a thread just fine.

> Or is this OS dependent?

The precise semantics are OS dependent, yes. However, you can use it
in the presence of threads on most systems that support threads (for
a reasonable definition of "supports threads", which may exclude
HP-UX and FreeBSD :-)

It's technically not thread-safe if other threads manipulate file
descriptors; there is always a chance of race conditions when some
thread opens a file handle and then tries to set the CLOEXEC flag
on it - if some other thread creates a subprocess in-between, there
is a chance that the child process "sees" the file handle even though
it "should" have the CLOEXEC flag set (but didn't at the point when
the process forked).

>    Also, if you launch processes from the subprocess module module and
> don't wait them to complete, do zombies accumulate under UNIX/Linux?

No. It depends on the precise code, but if you drop the reference to the
Popen object, or call one of the functions that don't return one in the
first place, the module itself will wait for the child processes
"regularly".

Regards,
Martin


From bj_666 at gmx.net  Fri Oct 26 09:06:52 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 26 Oct 2007 13:06:52 GMT
Subject: tuples within tuples
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
Message-ID: <5oe73cFmh2htU1@mid.uni-berlin.de>

On Fri, 26 Oct 2007 05:54:24 -0700, korovev76 wrote:

> [cut]
>>
>> Without a better example or explanation of what you are trying to do it is
>> difficult
> 
> You're right.
> Actually i'm parsing an xml file using pyrxp, which returns something
> like this:
> (tagName, attributes, list_of_children, spare)
> Where list_of_children might "be a list with elements that are 4-
> tuples or plain strings".
> 
> In other terms, if I have something like this:
> ('<tagA><tagB>bobloblaw</tagB></tagA>')
> it's parsed like this:
> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)...
> 
> Fact is that my xml is much more deep... and I'm not sure how to
> resolve it

Resolve *what*?  The problem isn't clear yet; at least to me.  Above you
say what you get.  What exactly do you want?  Examples please.

Ciao,
	Marc 'BlackJack' Rintsch


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 23:40:19 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 03:40:19 -0000
Subject: for loop question
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
	<1192047900.124690.284890@19g2000hsx.googlegroups.com>
Message-ID: <13gr6p3apqjik3c@corp.supernews.com>

On Wed, 10 Oct 2007 20:25:00 +0000, Paul Hankin wrote:

>> A "works-for-me":
>>
>>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
>>  >>> for a,b in pairs:
>>  ...     print a,b
> 
> for a, b in zip(test, test[1:]):
>   print a, b

May be unfortunately slow if test is half a gigabyte of data, what with 
essentially making three copies of it. Lazy procedures like the generator 
expression above are often much better.


Just for completion, here's another way:

prev = test[0]
for i in xrange(1, len(test)):
    print prev, test[i]
    prev = test[i]



-- 
Steven.


From piotr at kolodziejczyk.waw.pl  Tue Oct  2 08:13:21 2007
From: piotr at kolodziejczyk.waw.pl (piotr at kolodziejczyk.waw.pl)
Date: Tue, 02 Oct 2007 12:13:21 -0000
Subject: readline() - problem
In-Reply-To: <87fy0tsq2t.fsf@benfinney.id.au>
References: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
	<87fy0tsq2t.fsf@benfinney.id.au>
Message-ID: <1191327201.138439.20290@22g2000hsm.googlegroups.com>

On 2 Pa , 13:39, Ben Finney <bignose+hates-s... at benfinney.id.au>
wrote:
> pi... at kolodziejczyk.waw.pl writes:
> > import string
>
> Why import 'string' if you're not using it?
>
> > f=open('/test/test.asc','r')
> > o=open('/test/out.asc','w')
> > for line in f:
> >     s= f.readline()
>
> Your line object is already bound to the 'line' name in each
> iteration. You need to use that, not attempt to read yet another line
> each time.
>

Of course, it helped. Many thanks for all.

piotr



From BjornSteinarFjeldPettersen at gmail.com  Wed Oct 10 19:24:51 2007
From: BjornSteinarFjeldPettersen at gmail.com (thebjorn)
Date: Wed, 10 Oct 2007 23:24:51 -0000
Subject: if then elif
In-Reply-To: <Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>
References: <mailman.42.1192048768.927.python-list@python.org>
	<Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>
Message-ID: <1192058691.932029.276980@r29g2000hsg.googlegroups.com>

On Oct 10, 11:03 pm, Larry Bates <larry.ba... at websafe.com> wrote:
[...]
>
> Boolean problem:
>
> if cal or fat <= 0
>
> That may be the way you say it or "think" it but it won't work.
>
> 'cal or fat' is evaluated first.  Since they both have values this ALWAYS
> evaluates to 1 which is NEVER less than or equal to 0.

That's not correct. The comparison operator has higher presedence than
the or operator, so the above is interpreted as:

    if (cal) or (fat <= 0):

This idiom is occasionally useful in a couple of scenarios like e.g.
default and mutable function arguments:

    def foo(n=None):
        n = n or [42]

which is very common in Perl code, but causes problems if you pass it
an empty list. The better way of doing that in Python is probably:

    def foo(n=None):
        n = n is None and [42]

but if you're going to write that much, it's clearer to just go with
the canonical:

    def foo(n=None):
        if n is None:
            n = [42]

but I digress :-)

> You are looking for
>
> if (cal <= 0) or (fat <=0):
>
> (Note: Parenthesis not required, but it may help you understand precedence of
> evaluation.

That is a correct coding of the OP's intentions, although I would
think that the number of fat grams could indeed be zero for some
foods(?) so perhaps it would be more correct to say:

   if cal <= 0 or fat < 0:

>  Also read here:
>
> http://www.ibiblio.org/g2swap/byteofpython/read/operator-precedence.html
>
> -Larry

Good table, except for higher presedence being further down in the
table which might be confusing pedagogically.

-- bjorn



From istvan.albert at gmail.com  Sat Oct 27 08:37:11 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Sat, 27 Oct 2007 12:37:11 -0000
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <mailman.118.1192620083.13605.python-list@python.org>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<mailman.118.1192620083.13605.python-list@python.org>
Message-ID: <1193488631.845716.228950@y42g2000hsy.googlegroups.com>

On Oct 17, 7:20 am, Steve Holden <st... at holdenweb.com> wrote:

> I still remember Gadfly fondly.

What a great piece of software Gadfly is ... congrats on that Aaron.
For me it was one of the first Python packages that truly stood out
and made me want to learn Python.

i.



From billwerk at gmail.com  Tue Oct  9 15:09:39 2007
From: billwerk at gmail.com (Bill Hamilton)
Date: Tue, 9 Oct 2007 14:09:39 -0500
Subject: pytz has so many timezones!
In-Reply-To: <1191954101.289278.216770@g4g2000hsf.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<5n1ebbFfok0sU1@mid.uni-berlin.de>
	<1191954101.289278.216770@g4g2000hsf.googlegroups.com>
Message-ID: <e1525e7f0710091209n2ba1f5d8o2fbb165a13467382@mail.gmail.com>

On 10/9/07, mensanator at aol.com <mensanator at aol.com> wrote:
> On Oct 9, 8:34 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > mensana... at aol.com wrote:
> > > On Oct 8, 1:03 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> > >> On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com wrote:
> > >> > For example, Windows has seperate listings for
> >
> > >> > Central America
> > >> > Central Time (US & Canada)
> > >> > Guadalahara, Mexico City, Monterry - New
> > >> > Guadalahara, Mexico City, Monterry - Old
> > >> > Saskatchewan
> >
> > >> > but they are all GMT-6
> >
> > >> But they could have different rules for Daylight Saving Time.
> >
> > > Which only matters if you're setting your clock.
> >
> > That's BS. If I'm supposed to be attending a video-conference that spans a
> > few continents which is scheduled using a web-app, it's VITAL that I get
> > the invitation and reminder rendered in MY local timezone, DST included.
> >
> > And for the matter of
> >
> > """
> > There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> > +12.
> > """
> >
> > who says that timezones have to be separated by one hour each?
>
> The Earth says. It takes 24 hours to revolve.
It only takes 24 hours for the Earth to revolve once because we
defined an hour as 1/24 of the time it takes for the Earth to revolve
once.  We could have said an hour was 1/10 that time, or 1/2, or
1/27.284.

>
> > Or why don't we have a global time?
>
> Like UTC?

What about GMT?  I hear that much more than UTC.

>
> >
> > Your 25 timezones are an abstraction the same way
>
> Not the same way at all. The 25 timezones I speak of are
> not merely an abstraction, but related to longitude.
>
> > as are the 400 apparently in use by people all over the world
>
> Where the correlation to longitude is much looser.
> Granted, it doesn't need to be for non-navigational
> purposes. And although governments can legislate things
> like DST, they can't legislate longitude.
>

But your 25 timezones are only useful to the people that use those 25
timezones.  And the time zone I use is not one of those 25 timezones.

> > - and last time I checked, there was no
> > fundamental law in physics or such that limited the allowed or sensible
> > number of timezones...
>
> Isn't there some law somewhere that says the circumference
> of a sphere is 360deg? Doesn't that same law mean that no two
> points on a sphere can be seperated by more than 180deg
> longitude? Doesn't that make GMT+13 non-sensible?

A timezone is an arbitrary geographical designation.  It has nothing
to do with latitude or longitude.  While some time zones may be
defined as a geographical region between two longitudes, others may be
defined by geographical borders or convienent terrain features.  Take
a look at the international date line.  It doesn't follow a
longitudinal line, but instead jogs east around Asia and then west
around the Aleutian Islands.


--
-Bill Hamilton


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Oct 26 08:16:39 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 26 Oct 2007 14:16:39 +0200
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
	<13i09eohrt6il52@corp.supernews.com>
	<5oc23kFm4aqfU1@mid.individual.net>
	<47210600$0$4375$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <5oe457Fmh7lsU1@mid.individual.net>

Wildemar Wildenburger wrote:
> Bjoern Schliessmann wrote:

>> Which I don't understand (works best for me, and is best practice
>> in Windows).
>  
> Best practice? Says who?

Ok, LOL. So, now you expect me to cite some official source? Despite
the fact that the vast majority of windows installers on this
planet use "%PROGRAMFILES%\Program Name" as default installation
path, particularly the ones for Microsoft's programs?

Regards,


Bj?rn

-- 
BOFH excuse #227:

Fatal error right in front of screen



From kyosohma at gmail.com  Fri Oct 12 15:18:05 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 12 Oct 2007 19:18:05 -0000
Subject: raw_input() and utf-8 formatted chars
In-Reply-To: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
References: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
Message-ID: <1192216685.923198.279040@v29g2000prd.googlegroups.com>

On Oct 12, 1:53 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
> s = 'A\xcc\x88'   #capital A with umlaut
> print s           #displays capital A with umlaut
>
> s = raw_input('Enter: ')   #A\xcc\x88
> print s                    #displays A\xcc\x88
>
> print len(input)           #9
>
> It looks like every character of the string I enter in utf-8 is being
> interpreted literally as 9 separate characters rather than one
> character.  How do I enter a capital A with an umlaut so that python
> treats it as one character?

I don't know. This works for me:

>>> x = raw_input('Enter: ')
Enter: ?
>>> len(x)
1
>>>

I'm using Python 2.4 with Default Source Encoding set to None on
Windows XP SP2.

Mike



From gandalf at shopzeus.com  Tue Oct  9 12:46:36 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Tue, 09 Oct 2007 18:46:36 +0200
Subject: Static variable vs Class variable
In-Reply-To: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
Message-ID: <470BB06C.1060201@shopzeus.com>

minkoo.seo at gmail.com wrote:
> Hi.
>
> I've got a question on the differences and how to define static and
> class variables. AFAIK, class methods are the ones which receives the
> class itself as an argument, while static methods are the one which
> runs statically with the defining class.
>
> Hence, my understanding is that static variables must be bound to the
> class defining the variables and shared by children of parent class
> where the variable is defined. But, please have a look at this code in
> which a guy told me that the variable a is static:
>
>   
>>>> class Foo:
>>>>         
> 	a = 1
> 	@classmethod
> 	def increment(cls):
> 		cls.a += 1
> 		print cls.a
>   
In your increment() method, you do this:

cls.a += 1

It does the following thing:

#1. read cls.a
#2. add one
#3. assign this value to cls.a

In point #3, you really bind a name to a value. As you probably know, in 
Python, there are names and objects. The initial value of the name 'a' 
is 1. It is an immutable object. The "+=" operator usually increments a 
value of an object. However, because the 'int' type is immutable, the += 
operator will rather rebind this variable to a newly created value. I 
believe this is what is happening here. Your question "is variable a 
static or class variable?" has no real answer. After running the 
increment() method on a descendant class, e.g. Child1 will rebind the 
name Child1.a, creating a new name in the namespace of the class. So the 
variable Foo.a is still there, but you are accessing Child1.a instead.

If you want to HANDLE a as a static variable, you can handle it with a 
static method. That won't bind a new name in the descendant class. 
(However, you can still rebind it, e.g. "Child.a=42")


Now here is a good question: how do you handle a variable as static, 
from a class (not static) method? Here is an example:

 >>> class Foo(object):
...     a = 1
...     @classmethod
...     def increment(cls):
...             Foo.a += 1
...             print cls.a
...
 >>> class Child1(Foo):
...     pass
...
 >>> Child1.increment()
2
 >>> Child1.increment()
3
 >>> Foo.a
3
 >>> Child1.a = 10
 >>> Child1.increment()
10
 >>> Child1.increment()
10
 >>> Child1.increment()
10
 >>> Foo.a
6
 >>>



However, the question is: why would you do this? :-)

BTW you should use new style classes whenever it is possible. Old style 
classes will have gone...

Hope this helps,

   Laszlo



From fanglicheng at gmail.com  Thu Oct 11 06:11:44 2007
From: fanglicheng at gmail.com (Licheng Fang)
Date: Thu, 11 Oct 2007 10:11:44 -0000
Subject: Accessing Function Variables from Sub-functions
Message-ID: <1192097504.394834.184930@o3g2000hsb.googlegroups.com>

On Apr 14 2003, 10:30 pm, Alex Martelli <al... at aleax.it> wrote:
> Sebastian Wilhelmi wrote:
> > Hi,
>
> > I would like to do the following:
>
> > -------8<-------8<-------8<-------8<-------
> > def test ():
> >     count = 0
> >     def inc_count ():
> >         count += 1
> >     inc_count ()
> >     inc_count ()
> >     print count
>
> > test ()
> > -------8<-------8<-------8<-------8<-------
>
> > This doesn't work (and I even understand, why ;-)
>
> Specifically: a nested function cannot *RE-BIND* a variable of
> an outer function.
>

Sorry to dig up this old thread, but I would like to know what's the
rationale is. Why can't a nested function rebind a variable of an
outer function?

>
>
> > One solution is the following, which I however do not see as very
> > clean or nice.
>
> > -------8<-------8<-------8<-------8<-------
> > def test ():
> >     count = [0]
> >     def inc_count ():
> >         count[0] += 1
> >     inc_count ()
> >     inc_count ()
> >     print count[0]
>
> > test ()
> > -------8<-------8<-------8<-------8<-------
>
> > Now my question: Is there some way to achieve this with a nicer
> > syntax?
>
> Depends on your tastes in syntax, e.g.:
>
> def test():
>     class Bunch: pass
>     loc = Bunch()
>     loc.count = 0
>     def inc_count():
>         loc.count += 1
>     inc_count()
>     inc_count()
>     print loc.count
>
> or:
>
> def test():
>     test.count = 0
>     def inc_count():
>         test.count += 1
>     inc_count()
>     inc_count()
>     print test.count
>
> and no doubt quite a few others.

I was trying to write a function that creates another function and
returns it when I came across this problem. These two solutions have a
difference:

def M():
    M.c = 0
    class Bunch:
        pass
    Bunch.c = 0
    def f():
        M.c += 1
        Bunch.c += 1
        print M.c, Bunch.c
    return f

>>>f = M()
>>>f2 = M()
>>> f()
1 1
>>> f()
2 2
>>> f()
3 3
>>> f2()
4 1
>>> f2()
5 2
>>> f2()
6 3

The created functions share their variables binded to the outer
function, but have their separate copies of variables bundled in a
class.

Is binding name to the function object a python way to use 'static'
variables? But how to initialize them?

>
> > Using 'global' would not count, as that would make a variable
> > unnecessarily known to the outside.
>
> The two solutions above outlined differ in this respect -- variable
> 'loc' in the former is local to function test, while function attribute
> test.count in the latter is "known to the outside" (it survives each
> execution of test and can be examined "from the outside").
>
> Class Bunch (or some highly refined version thereof) IS typically
> around whenever I program, see for example:
>
> http://mail.python.org/pipermail/python-list/2002-July/112007.html
>
> for a typical presentation.  Having available the MetaBunch there
> described, I'd start the function as follows:
>
> def test():
>     class Bunch(MetaBunch): count=0
>     loc = MetaBunch()
>     def inc_count():
>         loc.count += 1
>
> etc.  I do find such constructs often handy...
>
> Alex



From wyldwolf at gmail.com  Wed Oct 10 12:28:15 2007
From: wyldwolf at gmail.com (Kevin)
Date: Wed, 10 Oct 2007 11:28:15 -0500
Subject: Problem of Readability of Python
In-Reply-To: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <77895c1d0710100928v5a9bd997y2e1803893ee1bb94@mail.gmail.com>

Am I missing something, or am I the only one who explicitly declares
structs in python?

For example:
FileObject = {
    "filename" : None,
    "path" : None,
    }

fobj = FileObject.copy()
fobj["filename"] = "passwd"
fobj["path"] = "/etc/"

Kevin Kelley

On 10/7/07, Licheng Fang <fanglicheng at gmail.com> wrote:
> Python is supposed to be readable, but after programming in Python for
> a while I find my Python programs can be more obfuscated than their C/C
> ++ counterparts sometimes. Part of the reason is that with
> heterogeneous lists/tuples at hand, I tend to stuff many things into
> the list and *assume* a structure of the list or tuple, instead of
> declaring them explicitly as one will do with C structs. So, what used
> to be
>
> struct nameval {
>     char * name;
>    int val;
> } a;
>
> a.name = ...
> a.val = ...
>
> becomes cryptic
>
> a[0] = ...
> a[1] = ...
>
> Python Tutorial says an empty class can be used to do this. But if
> namespaces are implemented as dicts, wouldn't it incur much overhead
> if one defines empty classes as such for some very frequently used
> data structures of the program?
>
> Any elegant solutions?
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Kevin Kelley
http://technogeek.org/


From http  Mon Oct  1 10:31:17 2007
From: http (Paul Rubin)
Date: 01 Oct 2007 07:31:17 -0700
Subject: Python and SSL
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
Message-ID: <7xzlz2q53e.fsf@ruckus.brouhaha.com>

Johny <python at hope.cz> writes:
> By using my Python program I am  attempting to trust a certificate
> signed by a certification authority that Python doesn't trust and that
> causes the error.

No, as Martin points out, Python trusts EVERY certificate, which of
course misses the whole point of certificates.  Whatever is making
your program fail is something different.


From mail at timgolden.me.uk  Fri Oct 12 04:32:28 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 12 Oct 2007 09:32:28 +0100
Subject: Pyro:  ActiveState (wind32) to Unix
In-Reply-To: <0A53725C4A497848A7B3A0874B2598313D38EB@acesxch01.ADVENTISTCORP.NET>
References: <0A53725C4A497848A7B3A0874B2598313D38EB@acesxch01.ADVENTISTCORP.NET>
Message-ID: <470F311C.2000201@timgolden.me.uk>

Sells, Fred wrote:
> I'm using ActiveState python on a windows box to talk to ACtive Directory.  
 > I'm running a Pyro Server on the same box.
> 
> The client is Linux running std Python 2.4.
> 
> It works just fine until the server codes calls some 
 > win32com.client api;  then I get
> 
> 
> Traceback (most recent call last):
>   File "C:\All\projects\AccAdminTools\src\demo002\client\client.py", line 25, in ?
>     unittest()	
>   File "C:\All\projects\AccAdminTools\src\demo002\client\client.py", line 21, in unittest
>     properties = ad.getProperties()
>   File "c:\all\tools\python24\lib\site-packages\Pyro-3.7-py2.4-win32.egg\Pyro\core.py", line 390, in __call__
>     return self.__send(self.__name, args, kwargs)
>   File "c:\all\tools\python24\lib\site-packages\Pyro-3.7-py2.4-win32.egg\Pyro\core.py", line 468, in _invokePYRO
>     return self.adapter.remoteInvocation(name, constants.RIF_VarargsAndKeywords, vargs, kargs)
>   File "c:\all\tools\python24\lib\site-packages\Pyro-3.7-py2.4-win32.egg\Pyro\protocol.py", line 416, in remoteInvocation
>     answer = pickle.loads(answer)
> ImportError: No module named pywintypes
> 
> ____________________the offending code is ________________________________________    def getProperties(self):
>     def getProperties(self):
>       attr_dict={}
>       adobj=win32com.client.GetObject(self.LdapPath)  #<<<<this line causes the error
>       return {'aaa':'bbb'}

It looks to me as though the Pyro server is passing back a "raw"
win32com object, which therefore needs various bits of the pywin32
plumbing in order to work. What happens is that the Pyro server
pickles up the object you return and the client unpickles it. In
order to unpickle, the client must have access to the modules,
classes etc. which the server does. (You can use mobile code etc.
but that wouldn't help here). The problem is, of course, that the
pywin32 stuff is Windows specific.

In short, make sure that whatever you pass back from your Pyro
server is either plain Python types (eg a dict of values etc)
or uses a class which is available -- or at least would work if
passed over by Pyro's mobile code -- on the Linux box.

Is that clear? Or do you need an example?

TJG


From duncan-news at grisby.org  Wed Oct 10 05:18:03 2007
From: duncan-news at grisby.org (Duncan Grisby)
Date: Wed, 10 Oct 2007 09:18:03 GMT
Subject: ANNOUNCE: omniORB 4.1.1 and omniORBpy 3.1
Message-ID: <mailman.14.1192012555.927.python-announce-list@python.org>

I am pleased to announce that omniORB 4.1.1 and omniORBpy 3.1 are now
available. omniORB is a robust, high performance CORBA implementation
for C++; omniORBpy is a version for Python.

You can download them in source and Windows binary forms from
SourceForge:

  http://sourceforge.net/project/showfiles.php?group_id=51138&package_id=44914&release_id=544978
  http://sourceforge.net/project/showfiles.php?group_id=51138&package_id=48639&release_id=544980

These are mainly bug fix releases, with a number of minor new features.
See the release notes and bug lists for more details:

For omniORB 4.1.1:

  http://sourceforge.net/project/shownotes.php?release_id=544978&group_id=51138
  http://omniorb.sourceforge.net/bugs/bugfixes-410.html

For omniORBpy 3.1:

  http://sourceforge.net/project/shownotes.php?release_id=544980&group_id=51138
  http://omniorb.sourceforge.net/pybugs/bugfixes-30.html


Duncan.
-- 
 -- Duncan Grisby         --
  -- duncan at grisby.org     --
   -- http://www.grisby.org --


From tjreedy at udel.edu  Tue Oct  2 10:59:42 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 2 Oct 2007 10:59:42 -0400
Subject: How popular is Django ?
References: <1191245034.626711.306380@19g2000hsx.googlegroups.com>
	<5mcgniFcjc00U1@mid.individual.net>
Message-ID: <fdtmct$jsi$1@sea.gmane.org>


"Thomas Guettler" <guettli.usenet at thomas-guettler.de> wrote in message 
news:5mcgniFcjc00U1 at mid.individual.net...
seb.haase at gmail.com wrote:

| comp.lang.python is a usenet group.

which means that it is independently hosted on newsservers around the 
world.
It is also a mailing list hosted by python.org and a gmane group.

|django-users is a mailinglist hosted by google.

|The number of django-users subscribers can be calculated by google.
|But the number of comp.lang.python users can only be guessed.

Unless Google claims otherwise, I would assume that '11000' is only the 
number of people who access c.l.p via Google.  And if they did so claim, I 
would want to see the algorithm before giving it any credence.

tjr





From chlo.prog at gmail.com  Mon Oct  1 10:04:31 2007
From: chlo.prog at gmail.com (rc)
Date: Mon, 01 Oct 2007 07:04:31 -0700
Subject: win32com COMAdminCatalogObject Value method
Message-ID: <1191247471.992094.203630@n39g2000hsh.googlegroups.com>

I'm trying to convert VB code that registers COM+ components to
Python. However, I'm unable to set values on COMAdminCatalogObject
using the Value() method, it seems to think I'm trying to call the get
method.

VB Code:
Dim cat As COMAdminCatalog
Set cat = New COMAdminCatalog
Dim apps As COMAdminCatalogCollection
Set apps = cat.GetCollection("Applications")
Dim app As COMAdminCatalogObject
Set app = apps.Add
app.Value("ID") = AppID


Python Code:
objCOMAdminCatalog =
win32com.client.Dispatch("COMAdmin.COMAdminCatalog")
objApplications = objCOMAdminCatalog.GetCollection("Applications")
objCOMAdminCatalogObject = objApplications.Add()
print "ID", objCOMAdminCatalogObject.Value("ID")  #This is returning
the random ID
# app.Value("ID") = AppID # SyntaxError: can't assign to function call
objCOMAdminCatalogObject.Value("ID", AppID) #Exception thrown

Returns the following error:
TypeError: Value() takes at most 2 arguments (3 given)



From gagsl-py2 at yahoo.com.ar  Sat Oct 20 18:44:28 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 20 Oct 2007 19:44:28 -0300
Subject: Get the instance name from a list by Reflection
References: <57045.94694.qm@web90513.mail.mud.yahoo.com>
Message-ID: <op.t0ipgeqfx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sat, 20 Oct 2007 16:10:34 -0300, sccs cscs <zorg724 at yahoo.fr> escribi?:

> I cannot find into documentation how to get the instance name. I found  
> the attributes __dict__,__class__ ,__bases__ __name__ ,
> but if i have the code:

In general, you can't. There is no such thing as "the instance name".
See  
http://www.python.org/doc/faq/programming/#how-can-my-code-discover-the-name-of-an-object

-- 
Gabriel Genellina



From patrick.waldo at gmail.com  Tue Oct 23 18:13:37 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Tue, 23 Oct 2007 22:13:37 -0000
Subject: Regular Expression
In-Reply-To: <1193151819.991937.47850@i38g2000prf.googlegroups.com>
References: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
	<1193151819.991937.47850@i38g2000prf.googlegroups.com>
Message-ID: <1193177617.531253.64150@k35g2000prh.googlegroups.com>

This is related to my last post (see:
http://groups.google.com/group/comp.lang.python/browse_thread/thread/c333cbbb5d496584/998af2bb2ca10e88#998af2bb2ca10e88)

I have a text file with an EINECS number, a CAS number, a Chemical
Name, and a Chemical Formula, always in this order.  However, I
realized as I ran my script that I had entries like

274-989-4
70892-58-9
diazotovan? kyselina 4-
aminobenz?nsulf?nov?, kopulovan? s
farbiarskym moru?ov?m (Chlorophora
tinctoria) extraktom, komplexy so
?elezom
komplexy ?eleza s produktami
kopul?cie diazotovanej kyseliny 4-
aminobenz?nsulf?novej s l?tkou
registrovanou v Indexe farieb pod
identifika n?m  ?slom Indexu farieb,
C.I. 75240.

which become

274-989-4|70892-58-9|diazotovan? kyselina 4- aminobenz?nsulf?nov?,
kopulovan? s farbiarskym moru?ov?m (Chlorophora tinctoria) extraktom,
komplexy so ?elezom komplexy ?eleza s produktami kopul?cie
diazotovanej kyseliny 4- aminobenz?nsulf?novej s l?tkou registrovanou
v Indexe farieb pod identifika n?m  ?slom Indexu farieb, C.I.|75240.

The C.I 75240 is not a chemical formula and there isn't one.  So I
want to add a regular expression for the chemical name for an if
statement that stipulates if there is not chemical formula to move
on.  However, I must be getting confused from the regular expression
tutorials I've been reading.

Any ideas?

Original Code:

#For text files in a directory...
#Analyzes a randomly organized UTF8 document with EINECS, CAS,
Chemical, and Chemical Formula
#into a document structured as EINECS|CAS|Chemical|Chemical Formula.

import os
import codecs
import re

path = "C:\\text_samples\\text"                #folder with all text
files
path2 = "C:\\text_samples\\text\\output"       #output of all text
files

NR_RE = re.compile(r'^\d+-\d+-\d+$')           #pattern for EINECS
number

def iter_elements(tokens):
    product = []
    for tok in tokens:
        if NR_RE.match(tok) and len(product) >= 4:
            product[2:-1] = [' '.join(product[2:-1])]
            yield product
            product = []
        product.append(tok)
    yield product

for text in os.listdir(path):
    input_text = os.path.join(path,text)
    output_text = os.path.join(path2,text)
    input = codecs.open(input_text, 'r','utf8')
    output = codecs.open(output_text, 'w', 'utf8')
    tokens = input.read().split()
    for element in iter_elements(tokens):
        #print '|'.join(element)
        output.write('|'.join(element))
        output.write("\r\n")


input.close()
output.close()


On Oct 23, 5:03 pm, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 22, 5:29 pm, patrick.wa... at gmail.com wrote:
>
>
>
> > Hi,
>
> > I'm trying to learn regular expressions, but I am having trouble with
> > this.  I want to search a document that has mixed data; however, the
> > last line of every entry has something like C5H4N4O3 or CH5N3.ClH.
> > All of the letters are upper case and there will always be numbers and
> > possibly one .
>
> > However below only gave me none.
>
> > import os, codecs, re
>
> > text = 'C:\\text_samples\\sample.txt'
> > text = codecs.open(text,'r','utf-8')
>
> > test = re.compile('\u+\d+\.')
>
> > for line in text:
> >     print test.search(line)
>
> If those are chemical symbols, then I guarantee that there will be
> lower case letters in the expression (like the "l" in "ClH").
>
> -- Paul




From deets at nospam.web.de  Tue Oct  9 17:24:52 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 23:24:52 +0200
Subject: pytz has so many timezones!
In-Reply-To: <1191954101.289278.216770@g4g2000hsf.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<5n1ebbFfok0sU1@mid.uni-berlin.de>
	<1191954101.289278.216770@g4g2000hsf.googlegroups.com>
Message-ID: <5n29t7Ffp127U1@mid.uni-berlin.de>

>> who says that timezones have to be separated by one hour each?
> 
> The Earth says. It takes 24 hours to revolve.
Wrong

>> Why aren't they separated by 30minutes, or 20, or 10? Or 2 hours?
> 
> Why isn't an hour defined to be 30 minutes?
> 
>> Or why don't we have a global time?
> 
> Like UTC?
> 
>> Your 25 timezones are an abstraction the same way
> 
> Not the same way at all. The 25 timezones I speak of are
> not merely an abstraction, but related to longitude.
> 
>> as are the 400 apparently in use by people all over the world
> 
> Where the correlation to longitude is much looser.
> Granted, it doesn't need to be for non-navigational
> purposes. And although governments can legislate things
> like DST, they can't legislate longitude.
> 
>> - and last time I checked, there was no
>> fundamental law in physics or such that limited the allowed or sensible
>> number of timezones...
> 
> Isn't there some law somewhere that says the circumference
> of a sphere is 360deg? Doesn't that same law mean that no two
> points on a sphere can be seperated by more than 180deg
> longitude? Doesn't that make GMT+13 non-sensible?
> 
>> Diez
> 


From aclarke11 at yahoo.co.uk  Sun Oct 28 14:13:26 2007
From: aclarke11 at yahoo.co.uk (Tony)
Date: Sun, 28 Oct 2007 11:13:26 -0700
Subject: while within while
In-Reply-To: <13i88bo9djpu279@corp.supernews.com>
References: <mailman.515.1193512303.13605.python-list@python.org>
	<13i88bo9djpu279@corp.supernews.com>
Message-ID: <1193595206.629916.139590@50g2000hsm.googlegroups.com>

 Shawn Minisall wrote:
<Snip>

also, surely it should be paper covers rock?

Tony




From sjmachin at lexicon.net  Tue Oct  9 17:58:48 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 07:58:48 +1000
Subject: List loops
In-Reply-To: <mailman.27.1191944046.916.python-list@python.org>
References: <mailman.27.1191944046.916.python-list@python.org>
Message-ID: <470bf99c$1@news.eftel.com.au>

On 10/10/2007 1:33 AM, Hamilton, William wrote:
>> From: Tommy Grav
>>
>> Hi everyone,
>>
>>    I have a list of objects where I have want to do two loops.
>> I want to loop over the list and inside this loop, work on all
>> the elements of the list after the one being handled in the outer

The man said "after" ...

> 
>>>> alist = range(3)
>>>> for index, i in enumerate(alist):
> 	for jndex, j in enumerate(alist[index:]):

... so you need index+1 ...

> 		print index, jndex, i, j
> 
> 		
> 0 0 0 0

... to avoid the above unwanted output.



From tepples at spamcop.net  Wed Oct 10 11:52:17 2007
From: tepples at spamcop.net (tepples at spamcop.net)
Date: Wed, 10 Oct 2007 08:52:17 -0700
Subject: How do I make urllib2 preserve case in HTTP header names?
Message-ID: <1192031537.620718.114690@22g2000hsm.googlegroups.com>

The HTTP specification, RFC 2616, states that field names in HTTP
headers are case insensitive.  But I'm trying to use Python 2.5.1's
urllib2 to interact with a web service offered by Amazon.com, which
deviates from the HTTP spec in that it requires use of case-sensitive
header names ReportName, ReportID, and NumberOfReports.  I try to send
an HTTP header named "NumberOfReports", but it comes out mangled as
"Numberofreports'.  What is the best way to use Python 2.5.1 on
Windows Server 2003 to create HTTP or HTTPS requests that do not
mangle the case of header field names?

Test case follows:
==========
"""
To see how Python breaks the CaseSensitiveName, go to
command prompt and start netcat listening on the HTTP port:

nc -l -p 80 localhost

Then run this program on the same machine.  You will see that
CaseSensitiveName has become Casesensitivename.
"""

import urllib2

req = urllib2.Request("http://localhost/", "")
req.add_header('CaseSensitiveName', 'CaseSensitiveValue')
infp = urllib2.urlopen(req)
data = infp.read()
infp.close()
print data



From sunburned.surveyor at gmail.com  Mon Oct 22 14:42:57 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: Mon, 22 Oct 2007 11:42:57 -0700
Subject: Automatic Generation of Python Class Files
In-Reply-To: <mailman.337.1193077412.13605.python-list@python.org>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
Message-ID: <1193078577.129883.317680@k35g2000prh.googlegroups.com>

On Oct 22, 11:23 am, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/22/07, Sunburned Surveyor <sunburned.surve... at gmail.com> wrote:
>
>
>
>
>
> > On Oct 22, 10:26 am, "Chris Mellon" <arka... at gmail.com> wrote:
> > > On 10/22/07, Sunburned Surveyor <sunburned.surve... at gmail.com> wrote:
>
> > > > I was thinking of a way I could make writing Python Class Files a
> > > > little less painful. I was considering a Ptyhon script that read a
> > > > file with a list of property names and method names and then generated
> > > > a skeleton class file.
>
> > > > I was even thinking of automatically generating the shell for doc
> > > > strings and epydoc tags.
>
> > > > Is there existing scripts that do something like this? If not, I will
> > > > try to come up with something. If I'm sucessful I'll release the code
> > > > under the GPL and will report back to the list.
>
> > > > However, I thought I would check here first so that I don't reinvent
> > > > the wheel.
>
> > > > Thanks,
>
> > > > Scott Huey
>
> > > I can't think of a single reason why you would ever want to do this,
> > > since your "list of method and property names" would be just as
> > > verbose as just typing the actual python code.
>
> > > Auto generated documentation stubs are considered harmful because they
> > > take the place of real documentation.- Hide quoted text -
>
> > > - Show quoted text -
>
> > Chris,
>
> > You wrote: " can't think of a single reason why you would ever want to
> > do this,
> > since your "list of method and property names" would be just as
> > verbose as just typing the actual python code."
>
> > I don't think I understand how this would be the same amount of
> > typing. Consider the following example that would generate a Monster
> > class file from an input text file (I only did one property and method
> > in generated class file.):
>
> > Contents of input text file:
>
> > [Name]
> > Fire Breathing Dragon
>
> > [Properties]
> > Strength
> > Scariness
> > Endurance
>
> > [Methods]
> > eatMaiden argMaiden
> > fightKnight argKnight
>
> > Generated Python Class File:
>
> > def class FireBreathingDragon:
>
> >    def getStrength(self):
> >       """
> >       Docstring goes here.
>
> >       @return
> >       @rtype
> >       """
> >       return self.strength
>
> >    def setStrength(self, argStrength):
> >       """
> >       Docstring goes here.
>
> >       @param argStrength
> >       @ptype
> >       """
> >       return self.strength
>
> >    def eatMaiden(self, argMaiden):
> >       """
> >       Docstring goes here.
>
> >       @param argMaiden
> >       @ptype
> >       """
>
> Your getters/setters are useless (Python isn't Java) and so are the
> docstrings, because you have to write them over again anyway. Removing
> them results in 3 lines of code, quite a bit shorter than your  input
> file, and it doesn't have any of the quite well known issues with this
> sort of boiler plate code generation.- Hide quoted text -
>
> - Show quoted text -

Thank you for all of the feedback. As you can no doubt tell I am still
learning to think in "Python" instead of Java.

My intention is to copy the generated text into the module that will
containt the class definition. (I should have said "class definition"
not "class file".

I also intended to add statements creating properties from the getter
and setter methods. I understand that getters and setters aren't
really necessary if you aren't making a property. I just forgot to add
the property statements to my example.

I don't know much about pylint, but I will check it out. It sounds
like a nifty tool. At any rate, I always try to add documentation to
my code, but I can see how the docstring stubs could cause more harm
than good if this wasn't a programmer's habbit.

Thank you for all of the good responses. I hope I didn't offend anyone
with my "Javaness". I think Python is a great language and I hope to
continue learning and using it.

Scott Huey



From dfabrizio51 at gmail.com  Wed Oct 31 15:01:16 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Wed, 31 Oct 2007 12:01:16 -0700
Subject: why did these companies choose Tcl over Python
In-Reply-To: <t3agi3t7seui235qfccdtre4c9dnpo5q76@4ax.com>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
	<t3agi3t7seui235qfccdtre4c9dnpo5q76@4ax.com>
Message-ID: <1193857276.274481.319250@57g2000hsv.googlegroups.com>

On Oct 31, 3:06 am, Tim Roberts <t... at probo.com> wrote:
> chewie54 <dfabrizi... at gmail.com> wrote:
>
> >As an electronics engineer I use some very expensive EDA CAD tool
> >programs that are scriptable using Tcl.  I was wondering why these
> >companies have choose to use Tcl instead of Python.   Some of these
> >are:
>
> >   Mentor Graphics ModelTech VHDL and Verilog simulator
> >   Synopsys  Design Compiler and Primetime Static Timing Analyzer
> >   Actel FPGA tools.
>
> Well, I recently did a development contract for Mentor, and the RFQ gave me
> the choice of doing the library binding and diagnostic GUI in either Tcl or
> Python.  Naturally, I chose Python (and wxPython), and both the client and
> I are quite happy with the result.
>
> (Actually, I did a Tcl binding for them as well, and just writing the text
> scripts reinforced my dislike for it...)
> --
> Tim Roberts, t... at probo.com
> Providenza & Boekelheide, Inc.

Hi Tim,

I would like to use Python and C and wxWidgets for my EDA CAD program.
I want
to put most of the program core in an Python extension and GUI in
wxWidgets.

I do need to get publishing quality vector graphics outputs from this
program so
one of my concerns is if the wxWidgets will work for this or will I
have to use
something like openGL or Cairo.

Did your work for Mentor include a high quality graphics output?

Thanks,








From sami.jan at gmail.com  Mon Oct 22 04:34:55 2007
From: sami.jan at gmail.com (sami)
Date: Mon, 22 Oct 2007 08:34:55 -0000
Subject: using "request" variable in python web program
In-Reply-To: <1192997247.369705.326060@q5g2000prf.googlegroups.com>
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
	<1192924876.257468.27810@v29g2000prd.googlegroups.com>
	<1192996769.692284.163300@v23g2000prn.googlegroups.com>
	<1192997247.369705.326060@q5g2000prf.googlegroups.com>
Message-ID: <1193042095.275835.245920@i13g2000prf.googlegroups.com>

> See the library reference for information on how to get the value of
> form/request parameters from the CGI environment:
>
> http://docs.python.org/lib/node561.html
>
> Paul

Thanks again Paul - now I can see that the "request" object is a
string of name/value pairs that occurs after a "?" in a url e.g.
url.com/index.cgi?name=sami&lang=python - is that correct? Googling
for this information is useless since the word "request" is so common
on the www



From rdm at rcblue.com  Mon Oct 29 20:47:33 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 17:47:33 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
Message-ID: <20071030004737.9D86B1E4007@bag.python.org>

Reposting, deleting the [Possible SPAM] from the Subject: header.

At 03:23 PM 10/29/2007, Gabriel Genellina wrote:
 >En Mon, 29 Oct 2007 14:39:49 -0300, Dick Moores <rdm at rcblue.com> escribi?:
 >
 > > But here's a case where it seems I do need the
 > >
 > > if msvcrt.kbhit() line
 >
 >At least add a small sleep() call inside the loop, to be nice to other
 >running processes:
 >
 > > =========================
 > > #!/usr/bin/env python
 > > #coding=utf-8
 > > import time
 > > import msvcrt
 > > timeNow = time.time()
 > > oldTimeNow = timeNow
 > > while True:
 > >      if msvcrt.kbhit():
 > >          key = msvcrt.getch()
 > >          if key == 'h':
 > >              print 'Hello'
 > >          if key == 'b':
 > >              print 'Bye'
 > >          if key == '\r': # Enter key
 > >              break
 >         else:
 >             time.sleep(0.1)
 > >      timeNow = time.time()
 > >      if timeNow - oldTimeNow > 5:
 > >          print "5 seconds passed"
 > >          oldTimeNow = timeNow
 > > =========================

Yes, that makes a major difference in the CPU
usage percentage on my computer. In fact I can't
even tell that there is anything going on other
than the usual behind-the-scenes XP stuff. CPU
usage stays right around 0% or 6%, with an
occasional 6% and a very occasional 15%.
Interestingly, sleep(0.001) makes as big a
difference as your sleep(0.1), but sleep(0.0001) bumps it up to a steady 100%!

Thanks,

Dick 



From ggpolo at gmail.com  Sun Oct 21 08:23:07 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Sun, 21 Oct 2007 10:23:07 -0200
Subject: Selection error...
In-Reply-To: <1192949538.820414.101970@k35g2000prh.googlegroups.com>
References: <1192930118.501328.277540@i38g2000prf.googlegroups.com>
	<mailman.272.1192934933.13605.python-list@python.org>
	<1192949538.820414.101970@k35g2000prh.googlegroups.com>
Message-ID: <ac2200130710210523h654cb492tc74451a20c12695b@mail.gmail.com>

2007/10/21, Abandoned <besturk at gmail.com>:
>
> > cursor.execute("SELECT id from templinks where url=%s", (URL,) )
> Yes i already try this before ask.
>
> URL.decode('latin-1').encode('utf-8') to transcode it into utf-8.
> i know this but how do you know the html encoding's a latin-1 ?

Try using chardet to detect the encoding

> Html
> encoding is to be iso-8859-9 or ascii or cp1254 ... For this reason
> URL.decode('latin-1').encode('utf-8') must give me error. I'm trying
> now and whet it finished i write the result here.
> Thank you very much for your helps.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves


From deets at nospam.web.de  Sun Oct 14 17:59:59 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 14 Oct 2007 23:59:59 +0200
Subject: pydev code completion problem
In-Reply-To: <feu3bo$8hs$2@nemesis.news.tpi.pl>
References: <fetrk3$l27$3@nemesis.news.tpi.pl>	<1192394167.058669.117830@q5g2000prf.googlegroups.com>
	<feu3bo$8hs$2@nemesis.news.tpi.pl>
Message-ID: <5nfhr6FhrkupU1@mid.uni-berlin.de>

Lukasz Mierzejewski schrieb:
> On Sun, 14 Oct 2007 20:36:07 +0000, cyberco wrote:
> 
>> Confirmed (with exactly the same software).
>>
>> Please discuss this issue at the PyDev discussion forum:
>> http://sourceforge.net/forum/forum.php?forum_id=293649
> 
> 
> Thank you for replay, but I'm still not sure what to think about it...
> Marc 'BlackJack' Rintsch in his replay to my post says that it would be to
> complicated for IDE to keep track of all objects... isn't he right?

He is right. What would you expect from this piece of code:


foo = random.choose([A(), B(), C(), ..., Z()])



What PyDev does is to implement some heuristics that can guess easy 
cases - as you saw for yourself. But there is a limit to what can be 
done. Instead, it might even introduce errors.

Diez


From stefan.behnel-n05pAM at web.de  Wed Oct 17 11:36:45 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Wed, 17 Oct 2007 17:36:45 +0200
Subject: HTML Parser for Jython
In-Reply-To: <1192634455.095171.187570@i13g2000prf.googlegroups.com>
References: <1192634455.095171.187570@i13g2000prf.googlegroups.com>
Message-ID: <47162C0D.8010800@web.de>

Falcolas wrote:
> Does anybody know of a decent HTML parser for Jython? I have to do
> some screen scraping, and would rather use a tested module instead of
> rolling my own.

Not sure if it works, but have you tried BeautifulSoup? Or maybe an older
version of it?

Stefan


From python.list at tim.thechases.com  Tue Oct 30 15:24:04 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 30 Oct 2007 14:24:04 -0500
Subject: Python Interview Questions
In-Reply-To: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
Message-ID: <472784D4.8020408@tim.thechases.com>

 > I have used Python for a couple of projects last year and
 > I found it extremely useful. I could write two middle size
 > projects in 2-3 months (part time). Right now I am a bit
 > rusty and trying to catch up again with Python.
 >
 > I am now appearing for Job Interviews these days and I am
 > wondering if anybody of you appeared for a Python
 > Interview. Can you please share the questions you were
 > asked. That will be great help to me.

While I haven't interviewed precisely for Python, I've been
on the other (interviewing) end and can offer a few of the
sorts of things I ask.  I don't expect perfect answers to
all of them, but they show me a range of what the
interviewee knows.  I try and give a scattershot of
questions from the following areas to try and narrow down
where they fall in terms of pythonability, and then grill
more deeply around the edges that I find.

Basic Python:
=============
- do they know a tuple/list/dict when they see it?

- when to use list vs. tuple vs. dict. vs. set

- can they use list comprehensions (and know when not to
   abuse them? :)

- can they use tuple unpacking for assignment?

- string building...do they use "+=" or do they build a list
   and use .join() to recombine them efficiently

- truth-value testing questions and observations (do they
   write "if x == True" or do they just write "if x")

- basic file-processing (iterating over a file's lines)

- basic understanding of exception handling

Broader Basic Python:
=====================
- questions about the standard library ("do you know if
   there's a standard library for doing X?", or "in which
   library would you find [common functionality Y]?")  Most
   of these are related to the more common libraries such as
   os/os.path/sys/re/itertools

- questions about iterators/generators

- questions about map/reduce/sum/etc family of functions

- questions about "special" methods (__<foo>__)

More Advanced Python:
=====================
- can they manipulate functions as first-class objects
   (Python makes it easy, but do they know how)

- more detailed questions about the std. libraries (such as
   datetime/email/csv/zipfile/networking/optparse/unittest)

- questions about testing (unittests/doctests)

- questions about docstrings vs. comments, and the "Why" of
   them

- more detailed questions about regular expressions

- questions about mutability

- keyword/list parameters and unpacked kwd args

- questions about popular 3rd-party toolkits (BeautifulSoup,
   pyparsing...mostly if they know about them and when to use
   them, not so much about implementation details)

- questions about monkey-patching

- questions about PDB

- questions about properties vs. getters/setters

- questions about classmethods

- questions about scope/name-resolution

- use of lambda

Python History:
===============
- decorators added in which version?

- "batteries included" SQL-capible DB in which version?

- the difference between "class Foo" and "class Foo(object)"

- questions from "import this" about pythonic code

Python Resources:
=================
- what do they know about various Python web frameworks
   (knowing a few names is usually good enough, though
   knowledge about the frameworks is a nice plus) such as
   Django, TurboGears, Zope, etc.

- what do they know about various Python GUI frameworks and
   the pros/cons of them (tkinter, wx, pykde, etc)

- where do they go with Python related questions (c.l.p,
   google, google-groups, etc)

Other Process-releated things:
==============================
- do they use revision control
   (RCS/CVS/Subversion/Mercurial/Git...anything but VSS) and
   know how to use it well

- do they write automated tests for their code

Touchy-feely things:
====================
- tabs vs. spaces, and their reasoning

- reason for choosing Python

- choice of editor/IDE

Good luck with your interviewing and hope this helped,

-tkc







From bignose+hates-spam at benfinney.id.au  Tue Oct 16 05:16:41 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 19:16:41 +1000
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<873awb5wgw.fsf@benfinney.id.au>
	<m2tzor5uox.fsf@antares.emea.hpqcorp.net>
	<87k5pn4efu.fsf@benfinney.id.au>
Message-ID: <87bqaz4dxi.fsf@benfinney.id.au>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:

> A further issue, that requires a change of interface: Please comply
> with PEP 8 <URL:http://www.python.org/dev/peps/pep-0008/> for your
> module interface. In particular, please name classes with TitleCase,
> and functions, methods, and instance names with lower_case.

In fact, if you ever hope to see this module included in the standard
library, you should make sure the entire thing is PEP 8 compliant, not
just its interface.

-- 
 \       "It may be that our role on this planet is not to worship God |
  `\                       -- but to create him."  -- Arthur C. Clarke |
_o__)                                                                  |
Ben Finney


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Oct 25 13:26:44 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 25 Oct 2007 19:26:44 +0200
Subject: building a linux executable
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
	<1193228750.497591.202330@y27g2000pre.googlegroups.com>
	<5o922hFllmt9U3@mid.individual.net>
	<1193238513.187803.319850@i13g2000prf.googlegroups.com>
Message-ID: <5oc1ukFm1r6vU1@mid.individual.net>

Paul Boddie wrote:
> Any suggestions, then? ;-)

Not really; I've got a vaguely similar problem myself -- several
Debian systems with Python 2.4 and Python 2.5. But modules I need
(wxWidgets 2.8 and Twisted) aren't available as Python 2.5 packages
for Debian, so I'm stuck with 2.4. Packages from unstable won't
work because Twisted has a binary part that is linked against
another libc. I don't really want to compile and install manually
from tarballs everywhere, and building .deb packages with Python is
complicated.
 
Regards,


Bj?rn

-- 
BOFH excuse #151:

Some one needed the powerstrip, so they pulled the switch plug.



From arunasunil at gmail.com  Tue Oct 23 09:29:20 2007
From: arunasunil at gmail.com (arunasunil at gmail.com)
Date: Tue, 23 Oct 2007 13:29:20 -0000
Subject: Monitoring external processes
In-Reply-To: <1193121191.865066.13950@v29g2000prd.googlegroups.com>
References: <1193116191.769987.198560@z24g2000prh.googlegroups.com>
	<1193121191.865066.13950@v29g2000prd.googlegroups.com>
Message-ID: <1193146160.100546.287410@z24g2000prh.googlegroups.com>

On Oct 22, 11:33 pm, Graham Dumpleton <Graham.Dumple... at gmail.com>
wrote:
> On Oct 23, 3:09 pm, arunasu... at gmail.com wrote:
>
> > Hi,
>
> > Is there a way to track external processes launched by python on the
> > Mac? I am using subprocess module to launch the process.
>
> > Thanks
> > Sunil
>
> If using Python 2.3/2.4, you can use os.wait().
>
> If using Python 2.5, there is also have os.wait3() and os.wait4().
>
> See the operating system manual pages for the difference. Ie.,
>
>   man wait4
>
> Graham

Ah! Exactly what I needed.

Thanks
Sunil.



From grante at visi.com  Fri Oct 12 15:21:15 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 19:21:15 -0000
Subject: matching a street address with regular expressions
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
	<1192195158.203063.143920@e9g2000prf.googlegroups.com>
	<1192203158.119872.305750@e34g2000pro.googlegroups.com>
Message-ID: <13gvi9bat8e5laf@corp.supernews.com>

On 2007-10-12, Paul McGuire <ptmcg at austin.rr.com> wrote:

> If you've got an re that can handle everything from "123 Main" to
> "221B Baker Street" to "Hollywood and Vine" to "Lot 123, Hundred of
> Foughbarre", now THAT would be something.

Don't forget street addresses like:

  The Low Cowsheds

  Green Cottage

  etc.

AFAICT, there are still a lot of places in England that don't
even use a number, street-name tuple.  Just a building name
andn a town.
  
-- 
Grant Edwards                   grante             Yow! Are you mentally here
                                  at               at Pizza Hut??
                               visi.com            


From tdwdotnet at gmail.com  Sun Oct  7 13:40:19 2007
From: tdwdotnet at gmail.com (Tim Williams)
Date: Sun, 7 Oct 2007 18:40:19 +0100
Subject: Putting a line from a text file into a variable,
	then moving to next line
In-Reply-To: <4708CE8C.5050803@tim.thechases.com>
References: <LT3Oi.122049$Xa3.24034@attbi_s22>
	<4708CE8C.5050803@tim.thechases.com>
Message-ID: <9afea2ac0710071040s42ebbd8cse42b357a77a93441@mail.gmail.com>

On 07/10/2007, Tim Chase <python.list at tim.thechases.com> wrote:
> > I'm not really sure how readline() works. Is there a way to iterate
> > through a file with multiple lines and then putting each line in a
> > variable in a loop?
>
> You can use readlines() to get the whole line (including the
> newline):
>
>  lines = file('x.txt').readlines()
>
> or you can iterate over the file building a list without the newline:
>
>  lines = [line.rstrip('\n') for line in file('x.txt')]
>
> Thus, line[0] will be the first line in your file, line[1] will
> be the second, etc.
>

or splitlines()
>>>  lines = open('x.txt').read().splitlines()

:)


From robert.kern at gmail.com  Wed Oct 17 21:07:39 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 17 Oct 2007 20:07:39 -0500
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <13hdap1151s7u94@corp.supernews.com>
References: <471530E3.9090602@gmail.com>	<1192587229.888.13.camel@viola.izb.knu.ac.kr>	<mailman.109.1192591826.13605.python-list@python.org>
	<13hdap1151s7u94@corp.supernews.com>
Message-ID: <ff6bl0$k2u$1@ger.gmane.org>

[david] wrote:
> Steve Lamb wrote:
>> On 2007-10-17, Byung-Hee HWANG <bh at izb.knu.ac.kr> wrote:
>>> Just click "Ctrl-L", then you can reply to lists directly if you use
>>> good mailer like mutt or thunderbird or evolution ;; 
>>     Thunderbird only if it has the list-reply patch, has either enigmail or
>> mhengy installed and has the reply-to-list addon installed.  Otherwise, no,
>> Thunderbird still, years later, lacks that feature.  Part of the reason why I
>> am test driving gmane in slrn right now.  :)
> 
> I'm using Thunderbird 2.0.0.0: I use the right-click menu.

And click what? I have Thunderbird 2.0.0.6 on OS X and only see "Reply to Sender
Only" and "Reply to All".

-- 
Robert Kern

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



From duncan.booth at invalid.invalid  Fri Oct 19 08:34:12 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 19 Oct 2007 12:34:12 GMT
Subject: how to iterate over sequence and non-sequence ?
References: <mailman.201.1192778546.13605.python-list@python.org>
	<pan.2007.10.19.08.58.35@REMOVE.THIS.cybersource.com.au>
	<1192793844.946920.194930@q3g2000prf.googlegroups.com>
Message-ID: <Xns99CE8A0F1A098duncanbooth@127.0.0.1>

Nils <nils.lastein at gmail.com> wrote:

> why not:
>>>> for i in eval('(1,2,3)'):
> ...     print i
> 1
> 2
> 3
> 

For the exact same reason Steven already gave you: one day someone will 
give you bad data.

For eval you need to use slightly more complicated expressions. e.g. 
"__import__('os').system('rm # -rf /')"
will be sufficient to mess you up.



From aleax at mac.com  Sun Oct  7 19:24:39 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 16:24:39 -0700
Subject: Newbie packages Q
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
	<47091e82$0$15807$426a74cc@news.free.fr>
	<1191786525.264853.107630@k79g2000hse.googlegroups.com>
	<1i5m6we.1wwjdby573v11N%aleax@mac.com>
	<1191788530.784618.284080@o80g2000hse.googlegroups.com>
	<1i5m83i.1wbevvrjyk05eN%aleax@mac.com>
	<1191790724.319645.11730@g4g2000hsf.googlegroups.com>
Message-ID: <1i5mcoi.114ydwc74btpnN%aleax@mac.com>

MarkyMarc <marcsgbrevkonto at gmail.com> wrote:
   ...
> > As long as '/python' comes in the list before any other directory that
> > might interfere (by dint of having a Test.py or Test/__init__.py), and
> > in particular in the non-pathological case where there are no such
> > possible interferences, my assertion here quoted still holds.
> >
> > If you're having problems in this case, run with python -v to get
> > information about all that's being imported, print sys.path and
> > sys.modules just before the import statement that you think is failing,
> > and copy and paste all the output here, incuding the traceback from said
> > failing import.
> >
> > Alex
> 
> OK thank you, with some help from the -v option and debugging I found
> a test package in some package. I now renamed it and load it with
> sys.path.append.
> And now the btest.py works.

Good.

> BUT does this mean I have to set the path too the package in every
> __init__.py class?
> Or have do I tell a subpackage that it is part of a big package ?

The package directory (the one containing __init__.py) must be on some
directory in sys.path, just like a plain something.py module would have
to be in order to be importable.  How you arrange for this is up to you
(I normally install all add-ons in the site-packages directory of my
Python installation: that's what Python's distutils do by default, ).
As for conflict in names (of modules and/or packages), they're of course
best avoided than worked-around; not naming any module test.py, nor any
package (directory containing an __init__.py) Test, is a good start.


Alex


From cai.haibin at gmail.com  Mon Oct 22 04:54:02 2007
From: cai.haibin at gmail.com (james_027)
Date: Mon, 22 Oct 2007 08:54:02 -0000
Subject: calling a function from string
Message-ID: <1193043242.235837.86590@e34g2000pro.googlegroups.com>

hi,

i have a function that I could like to call, but to make it more
dynamic I am constructing a string first that could equivalent to the
name of the function I wish to call. how could I do that? the string
could might include name of the module.

for example

a_string = 'datetime.' + 'today()'

how could I call a_string as function?

Thanks
james



From paul at boddie.org.uk  Sun Oct 28 14:52:52 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Sun, 28 Oct 2007 11:52:52 -0700
Subject: Getting callfunc from ast code.
In-Reply-To: <1193594968.334939.289710@57g2000hsv.googlegroups.com>
References: <1193594968.334939.289710@57g2000hsv.googlegroups.com>
Message-ID: <1193597572.850216.42300@19g2000hsx.googlegroups.com>

On 28 Okt, 19:09, Glich <Glich.Gl... at googlemail.com> wrote:
> """Hi, how can I extend the code shown below so that I can identify
> any "CallFunc" in "func.code" and identify the value of "node" in
> "CallFunc"? Thanks.
>
> This is my code so far:
> """

I tend to use isinstance to work out what kind of AST node I'm looking
at, although I often use the visitor infrastructure to avoid doing
even that.

> """ Given a python file, this program prints out each function's name
> in that file, the line number and the ast code of that function.
>
> """
>
> import compiler
> import compiler.ast
>
> parse_file = compiler.parseFile("/home/glich/file.py")
>
> count = 0
>
> while count < (len(parse_file.node.nodes) - 1):
>
>         func = parse_file.node.nodes[count]

A quick style tip here: it's easier to iterate over the nodes, and if
you want a counter, use the enumerate built-in function. Together with
the above advice...

for count, func in enumerate(parse_file.node.nodes):
    if isinstance(func, compiler.ast.CallFunc):
        ...

>         print "\nFunc name: " + str(func.name)
>         print "Func line number: " + str(func.lineno) + "\n"
>
>         print str(func.code) + "\n"

Take a look at the help text for enumerate to see how I arrived at the
above:

help(enumerate)

Paul



From userprogoogle-139 at yahoo.co.uk  Sat Oct 13 12:12:56 2007
From: userprogoogle-139 at yahoo.co.uk (rodmc)
Date: Sat, 13 Oct 2007 09:12:56 -0700
Subject: email libraries and threads
Message-ID: <1192291976.922891.242700@i38g2000prf.googlegroups.com>

Hi,

I am writing a threaded application, part of which relies on sending
messages to users. However I cannot get the smtplib and some other
email related libraries to work inside threads (they work ok when not
in threads). Is there a problem with using threads and email? If so is
there a solution available or any tips which people can give me?

Best,

rod



From mail at microcorp.co.za  Wed Oct 24 02:49:44 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Wed, 24 Oct 2007 08:49:44 +0200
Subject: Iteration for Factorials
References: <5o3jalFl0n43U1@mid.uni-berlin.de><1193056647.416562.36150@q3g2000prf.googlegroups.com><oV0Ti.5015$aa6.4792@tornado.fastwebnet.it><1193057676.680959.71780@v23g2000prn.googlegroups.com><1193064348.526006.183080@q5g2000prf.googlegroups.com><Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it><mailman.332.1193067904.13605.python-list@python.org><Jb4Ti.72$BB6.22@tornado.fastwebnet.it><mailman.362.1193126604.13605.python-list@python.org><13hrcfj1gtpia56@corp.supernews.com><mailman.378.1193151468.13605.python-list@python.org>
	<slrnfhs4gv.rsn.jon+usenet@snowy.squish.net>
Message-ID: <00f601c8160d$1870f120$03000080@hendrik>

"Jon Ribbens" <jon+use...quivocal.co.uk> wrote:


> On 2007-10-23, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
> > Yuk.  Reminds me of one of the Hitachi processors that
> > has a single depth hardware "link register" that tells a 
> > subroutine where it was called from.
> 
> That's how ARM processors work, and they're everywhere these days.

Yes, worse luck.  The market has chosen...

- Hendrik



From steve at holdenweb.com  Wed Oct  3 15:28:06 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 15:28:06 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <85hcl8qaj7.fsf@lola.goethe.zz>
References: <13frd6vtarbee75@corp.supernews.com>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>	<fe0mhm$c08$1@orkan.itea.ntnu.no>
	<85sl4sqckf.fsf@lola.goethe.zz>	<fe0npc$cvq$1@orkan.itea.ntnu.no>
	<85hcl8qaj7.fsf@lola.goethe.zz>
Message-ID: <fe0qg4$fni$1@sea.gmane.org>

David Kastrup wrote:
> bcd at pvv.ntnu.no (Bent C Dalager) writes:
> 
>> In article <85sl4sqckf.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>>> bcd at pvv.ntnu.no (Bent C Dalager) writes:
>>>
>>> Not as much "been" liberated, but "turned" liberated.
>> I expect that either way you split this hair, using "free" in the
>> sense of "possessing liberty" is still going to be quite reasonable.
>>
>>> But picking just a single word from a whole explanation of _one_
>>> naming and declaring it as equivalent is not really being careful with
>>> language at all.
>> I have never claimed equivalence. What I have made claims about are
>> the properties of one of the meanings of a word. Specifically, my
>> claim is that "free" is a reasonable description of some one or some
>> thing that has been "liberated".
> 
> But it suggests that the natural state would be the unfree state.
> 
Which for Africans in colonial America it was. They arrived unfree and 
many of them liver their entire lives in slavery. After liberation they 
were. nevertheless, often referred to as "freed", because someone (thier 
owner) had freed them. As freed men they were, of course, /free/ to do 
what they chose (as long as someone "white" didn't object).

Please stop splitting hairs and get down to some useful discussion. This 
is boring (and has nothing to do with either Python or the subject line 
except in the most inconsequential way).

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From cokofreedom at gmail.com  Thu Oct 11 11:49:03 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Thu, 11 Oct 2007 15:49:03 -0000
Subject: Finding Peoples' Names in Files
In-Reply-To: <felg5m$rta$1@solaris.cc.vt.edu>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
Message-ID: <1192117743.911143.152680@d55g2000hsg.googlegroups.com>

On Oct 11, 5:40 pm, brad <byte8b... at gmail.com> wrote:
> cokofree... at gmail.com wrote:
> > On Oct 11, 5:22 pm, brad <byte8b... at gmail.com> wrote:
> >> Crazy question, but has anyone attempted this or seen Python code that
> >> does? For example, if a text file contained 'Guido' and or 'Robert' and
> >> or 'Susan', then we should return True, otherwise return False.
>
> > Can't you just use the string function .findall() ?
>
> I mean *any* possible person's name... I don't *know* the names
> beforehand :)

Well for something like that you could either do a search
for .istitle() through the file with a for loop, but that will catch
those after a full stop, or other random entries.

Otherwise, you get a HUGE list of all possible names? In dictionary
format for best option, and check the file against in using "in"...

However...how can you know it is a name...



From mazerj2006 at gmail.com  Mon Oct  1 16:42:24 2007
From: mazerj2006 at gmail.com (mazerj2006 at gmail.com)
Date: Mon, 01 Oct 2007 13:42:24 -0700
Subject: pywin32/win32com float/double coercion
Message-ID: <1191271344.784166.251790@y42g2000hsy.googlegroups.com>

I'm an old hand at python, but totally new to win32com -- I've run
into a snag that seems to be related to python's (usually handy) lack
of
distinction between floats and doubles. Can anyone explain to me (or
point me towards the right docs) how the win32com module handles an
ActiveX component that returns or expects an array of SINGLE precision
floats (ie, 32-bit floats)?

I'm using a vendor-supplied ActiveX component with two related API
calls that use variant arrays:
  vector = ReadDataV(...)
  WriteDataV(vector)

ReadData() correctly returns a tuple of floats when called from python
via win32com. However, WriteDataV() expects a vector of single
precision floats, but it seems like the win32com coercion mechanism is
passing in doubles (or at least after a few days of banging my head
against this, I'm convinced that's what's going on).

Basically the following results in garbage getting sent to the
component:
  x = ReadDataV()
  WriteData(x)

Can anyone point me in the right direction for fixing this problem? Is
there a way to force win32com to use single precision when passing in
floating point arrays?

Thanks,
/jamie

(please CC me a copy of any replies -- I'm WAY behind on c.l.p.)



From ryanlauritsen at gmail.com  Thu Oct 11 18:52:55 2007
From: ryanlauritsen at gmail.com (RyanL)
Date: Thu, 11 Oct 2007 22:52:55 -0000
Subject: remove header line when reading/writing files
Message-ID: <1192143175.137620.319470@q5g2000prf.googlegroups.com>

I'm a newbie with a large number of data files in multiple
directories.  I want to uncompress, read, and copy the contents of
each file into one master data file.  The code below seems to be doing
this perfectly.  The problem is each of the data files has a header
row in the first line, which I do not want in the master file.  How
can I skip that first line when writing to the master file?  Any help
is much appreciated.  Thank you.

import os
import sys
import glob
import gzip
zipdir = "G:/Research/Data/"
outfilename = "G:/Research/Data/master_data.txt"
outfile = open(outfilename,'w')
os.chdir(zipdir)
dirlist = os.listdir(os.curdir)
for item in dirlist:
	if os.path.isdir(item):
		os.chdir(item)
		filelist = glob.glob("*.gz")
		for zipfile in filelist:
			filein = gzip.GzipFile(zipfile,'r')
			filecontent = filein.read()
			filein.close()
			outfile.write(filecontent)
		os.chdir(os.pardir)
outfile.close()



From bborcic at gmail.com  Tue Oct 30 08:09:38 2007
From: bborcic at gmail.com (Boris Borcic)
Date: Tue, 30 Oct 2007 13:09:38 +0100
Subject: Iteration for Factorials
In-Reply-To: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <47271f3e$1_3@news.bluewin.ch>

Py-Fun wrote:
> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.
> 

fact = lambda n : len(map([1].__imul__,range(1,n+1))[0])

hth :)

BB


From jfcanac at free.fr  Thu Oct  4 12:34:06 2007
From: jfcanac at free.fr (Jean-Francois Canac)
Date: Thu, 4 Oct 2007 18:34:06 +0200
Subject: Real time plot
References: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM>
	<mailman.1493.1191484119.2658.python-list@python.org>
Message-ID: <47051599$0$27367$ba4acef3@news.orange.fr>


"Hendrik van Rooyen" <mail at microcorp.co.za> a ?crit dans le message de news: 
mailman.1493.1191484119.2658.python-list at python.org...
> Jean-Francois Canac  wrote:
>
>>I am reading a large amount of data from a COM port (or from a file) at a 
>>rate
> of 20 records per second. It is about >positioning of a vehicle on a race 
> track.
>>In each record we have time, position (lat and long) speed, course all 
>>from GPS
> equipment. I would like to Produce a >graph in real time with these 
> records to
> see the  vehicle moving on the track. The goal is to study the vehicle
>>performance and to always have its position, the application would run 
>>around
> 24 hours.
> >
>>I would like to write the application in Python and I am wondering which 
>>plot
> interface would be the more appropriate, I >have seen matplotlib, but I do 
> not
> know how to make real time applications with big amount of data. Is 
> hippodraw
> more >suited to this use or an other interface?
>>Many thanks
>
> I would draw dots on a suitably sized Tkinter canvas, after drawing a 
> schematic
> of the race track (laborious).
>
> 20 per second will be no problem, provided the machine is half decent.
>
> What is the speed at which the com port runs?
>
> - Hendrik
>
The com port run at 19.2 kb/s.
My pb is more the real time aspect: to see the plot changing in real time 
than the com aspect as the installation is already running with programs in 
c++.
The PC on which it is running is good enought
For me the interest is to migrate all taht on python to be able to make fast 
changes when it is of interest
Jean-Francois
> 




From deets at nospam.web.de  Thu Oct 18 10:50:20 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 16:50:20 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
Message-ID: <5npa5cFj5bvfU1@mid.uni-berlin.de>

Abandoned wrote:

> I want to convert a string to command..
> For example i have a string:
> a="['1']"
> I want to do this list..
> How can i do ?

The correct wording here would be expression. To evaluate expressions, there
is the function eval:

a = eval("['1']")

But beware: if the expression contains some potentially harmful code, it
will be executed. So it is generally considered bad style to use eval.

An example that fails would be 

a = eval("10**2000**2000")

or such thing.

Another alternative is to use parsers like simplejson to extract the
information. This of course only works, if your expressions are valid json.

Diez


From timr at probo.com  Sun Oct 14 00:23:36 2007
From: timr at probo.com (Tim Roberts)
Date: Sun, 14 Oct 2007 04:23:36 GMT
Subject: Memory Problems in Windows 2003 Server
References: <470f7857$0$27795$426a74cc@news.free.fr>
	<feo0f7$jd1$2@solaris.cc.vt.edu>
	<4710a5ad$0$26731$426a74cc@news.free.fr>
Message-ID: <6b63h3p842g6ggafqbc5d4f8n4o48ramdm@4ax.com>

AMD <amdescombes at gmail.com> wrote:
>
>I do the reading one line at a time, the problem seems to be with the 
>dictionary I am creating.

I don't know whether Python dictionaries must live in a contiguous piece of
memory, but if so, that could be the issue.  The system DLLs in Server 2003
have been "rebased" in such a way that they chop up the virtual address
space more than XP.  Even though there is more virtual memory available, it
is fragmented.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From cadet.bramble at gmail.com  Wed Oct  3 14:20:49 2007
From: cadet.bramble at gmail.com (bramble)
Date: Wed, 03 Oct 2007 18:20:49 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <mailman.1469.1191433159.2658.python-list@python.org>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<13g5uvh698l9h1c@corp.supernews.com>
	<mailman.1462.1191425446.2658.python-list@python.org>
	<13g7irlht5ruj3a@corp.supernews.com>
	<mailman.1469.1191433159.2658.python-list@python.org>
Message-ID: <1191435649.384615.51680@n39g2000hsh.googlegroups.com>

On Oct 3, 1:39 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/3/07, Grant Edwards <gra... at visi.com> wrote:
>
> > On 2007-10-03, Chris Mellon <arka... at gmail.com> wrote:
> > > On 10/2/07, Grant Edwards <gra... at visi.com> wrote:
> > >> On 2007-10-02, Chris Mellon <arka... at gmail.com> wrote:
>
> > >> > PyGtk has poor cross platform support, a very large footprint (the
> > >> > largest of all these libraries)
>
> > >> It's larger than wxWidgets on top of Gtk?
>
> > > No, but it's larger than wx on top of the native API,
>
> > A moot point for X11.
>
> wxWidgets actually does have a raw X11 implementation,

Wait though. If I want to use wxPython, my python code calls wxWidgets
code which calls gtk. So, it would seem simpler to remove 1 layer and
just call the gtk code directly via PyGTK.

>
> > > so when you average it across all platforms it's quite a bit
> > > larger.
>
> > I guess that's one of the costs of portability.
>
> Eh? The point is that wxWidgets, the more portable toolkit, is
> *smaller* than Gtk. It's not really related to portability as much as
> design considerations.

Isn't wxWidgets smaller that GTK+ simply because it's a wrapper and
doesn't do its own drawing?



From python.list at tim.thechases.com  Sat Oct  6 07:06:46 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 06 Oct 2007 06:06:46 -0500
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <fe7otk$21a$1@newsreader2.netcologne.de>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
Message-ID: <47076C46.7080508@tim.thechases.com>

>> At work we are shopping for a Web framework, so I have been
>> looking at the available options on the current market.
> 
> At least, you missed Turbo Gears :)
> http://turbogears.org/
> For me, it feels more integrated than Pylons.

Django [1] barely gets anything more than a mention as well.

Any respectable comparison of Python web frameworks should
include evaluation of at least Django and TG.  Or at least give
good reason why the comparison excludes them.

Zope is also missing, but I'm not sure Zope qualifies so much as
a framework, but as an answer to the question "If Emacs were a
Python web environment, what would it look like?"

I chose Django, but saw the power in TG as well...from my testing
of them, Django has a nice unified OOB experience, while TG feels
like it's trying to rein in very strong, but disparate parts.
Django's built-in templating system is one of those things you
either love or you hate.  Fortunately, if you're a hater, you can
mindlessly swap it out for your template system of choice with
minimal fuss.

-tim

[1] http://www.djangoproject.com


From gherzig at fmed.uba.ar  Tue Oct 16 09:18:05 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Tue, 16 Oct 2007 10:18:05 -0300
Subject: Simple HTML template engine?
In-Reply-To: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <4714BA0D.2070506@fmed.uba.ar>

allen.fowler wrote:

>Hello,
>
>Can anyone recommend a simple python template engine for generating
>HTML that relies only on the Pyhon Core modules?
>
>No need for caching, template compilation, etc.
>
>Speed is not a major issue.
>
>I just need looping and conditionals. Template inheritance would be a
>bonus.
>
>I've seen Genshi and Cheetah, but they seem way too complex.
>
>Any ideas?
>
>I'm sure I could build something myself, but I'm sure this has already
>been done quite a few times.  Why re-invent the wheel, right?
>
>
>Thank you,
>Allen
>
>  
>
http://htmltmpl.sourceforge.net/

It has loops and conditionals, simple to use. Very simple.
Kind of old program (dont seems to have suffer modifications since 2001)

Try it.
Cheers.

Gerardo


From Frank.Aune at broadpark.no  Wed Oct 31 10:06:27 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Wed, 31 Oct 2007 15:06:27 +0100
Subject: Namespace question
Message-ID: <200710311506.27887.Frank.Aune@broadpark.no>

Hello,

Is it possible writing custom modules named the same as modules in the 
standard library, which in turn use the same module from the standard 
library?

Say I want my application to have a random.py module, which in turn must 
import the standard library random.py module also, to get hold of the randint 
function for example.

My attempts so far only causes my random.py to import itself instead of the 
standard library random.py

Receipt for disaster? :)



Regards,
Frank


From steve at REMOVE-THIS-cybersource.com.au  Fri Oct 26 07:56:56 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 26 Oct 2007 11:56:56 -0000
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<87fxzyjkr1.fsf@benfinney.id.au>
Message-ID: <13i3lg8k3j64s7b@corp.supernews.com>

On Fri, 26 Oct 2007 19:19:46 +1000, Ben Finney wrote:

>> Of course we can intruduce a single character function name as an alias
>> for the Decimal type constructor, but even then we have to use both
>> parentheses and quotes for each and every decimal constant. We cannot
>> make it shorter than D("12.34")
> 
> Nor should we. A function or type name should be short but explicit, and
> 'Decimal' is about as short as I'd want.

You don't like str, int, float, list, set, dict, or bool?

Or for that matter, enum
http://www.python.org/dev/peps/pep-0354/

*wink*


-- 
Steven.


From kar1107 at gmail.com  Wed Oct 24 16:16:06 2007
From: kar1107 at gmail.com (Karthik Gurusamy)
Date: Wed, 24 Oct 2007 20:16:06 -0000
Subject: Easiest way to get exit code from os.popen()?
In-Reply-To: <1193252864.957914.305300@t8g2000prg.googlegroups.com>
References: <1193252864.957914.305300@t8g2000prg.googlegroups.com>
Message-ID: <1193256966.856767.191470@e9g2000prf.googlegroups.com>

On Oct 24, 12:07 pm, mrstephengross <mrstephengr... at hotmail.com>
wrote:
> Hi folks. I'm using os.popen() to run a command; according to the
> documentation, the filehandle.close() oepration is suppsoed to return
> the exit code. However, when I execute something like "exit 5",
> close() returns 1280. Here's the code:
>
>   pipe = os.popen("exit 5")
>   print pipe.close() # prints 1280
>
> Am I doing something wrong? Is there an easier way to get the exit
> code?

>>> print "%#x" % 1280
0x500     # first byte is your exit code; second gives signal info if
any
>>>

In any case, the best approach is to use the os module to interpret it
as given in other post (os.WEXITSTATUS(1280))

Karthik

>
> Thanks,
> --Steve




From adam at atlas.st  Thu Oct 11 10:17:12 2007
From: adam at atlas.st (Adam Atlas)
Date: Thu, 11 Oct 2007 07:17:12 -0700
Subject: Python process automatically restarting itself
Message-ID: <1192112232.409272.174030@50g2000hsm.googlegroups.com>

What is the best way for a Python process (presumed to be a script run
by the interpreter binary, not embedded in some other program) to
restart itself? This is what I've been trying:

    import __main__

    for path in sys.path:
        path += '/' + __main__.__file__
        if os.access(path, os.F_OK): break
    else:
        raise Exception('WTF?')

    #Then, something like...
    os.execl(sys.executable, sys.executable, path, *sys.argv[1:])

BUT! This is a multi-threaded program, and at least on OS X, trying to
exec*() in a threaded process raises OSError [Errno 45] Operation not
supported. So I tried having it fork, and having the child process
wait for the parent process to die (in various ways) and then exec*().
That seemed to work, sort of, but the child would not be attached to
the original terminal, which is a must.

Any ideas?



From apardon at forel.vub.ac.be  Tue Oct  2 07:03:23 2007
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 2 Oct 2007 11:03:23 GMT
Subject: s.split() on multiple separators
References: <1191160394.870241.171200@w3g2000hsg.googlegroups.com>
	<bkRLi.1723$hI7.1162@newssvr17.news.prodigy.net>
	<1191179790.181227.323480@k79g2000hse.googlegroups.com>
	<mailman.1325.1191209706.2658.python-list@python.org>
	<slrnfg3tl0.fm5.apardon@rcpc42.vub.ac.be>
	<87y7emhr0q.fsf@mulj.homelinux.net>
Message-ID: <slrnfg49br.fm5.apardon@rcpc42.vub.ac.be>

On 2007-10-02, Hrvoje Niksic <hniksic at xemacs.org> wrote:
> Antoon Pardon <apardon at forel.vub.ac.be> writes:
>
>> It may be convincing if you only consider natural numbers in
>> ascending order. Suppose you have the sequence a .. b and you want
>> the reverse.  If you work with included bounds the reverse is just b
>> .. a. If you use the python convention, things become more
>> complicated.
>
> It's a tradeoff.  The convention used by Python (and Lisp, Java and
> others) is more convenient for other things.  Length of the sequence
> x[a:b] is simply b-a.  Empty sequence is denoted simply with x[a:a],
> where you would need to use the weird x[a:a-1] with inclusive bounds.
> Subsequences such as x[a:b] and x[b:c] merge smoothly into x[a:c],
> making it natural to iterate over subsequences without visiting an
> element twice.

Sure it is a tradeoff and the python choice may in the end still turn
out the best. But that doesn't contradict that a number of
considerations were simply not mentioned in the article refered to.

>> Another problem is if you are working with floats. Suppose you have
>> a set of floats. Now you want the subset of numbers that are between
>> a and b included.  If you want to follow the convention that means
>> you have to find the smallest float that is bigger than b, not a
>> trivial task.
>
> The exact same argument can be used against the other convention: if
> you are working with inclusive bounds, and you need to represent the
> subset [a, b), you need to find the largest float that is smaller than
> b.

Which I think is a good argument against using any convention and
having explict conditions for the boundaries to include or exclude
them.

So instead of writing xrange(2,6) you have to write something like
xrange(2 <= x < 6) which explictly states 2 is included and 6 is
excluded. If someone wants both boundaries include he can write
xrange(2 <= x <= 5). 

A slice notation that would somehow indicate which boundaries are included
and which are excluded would be usefull IMO.

-- 
Antoon Pardon


From simon at brunningonline.net  Fri Oct 12 05:29:52 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Fri, 12 Oct 2007 10:29:52 +0100
Subject: EasyMock for python ?
In-Reply-To: <87ve9d9icx.fsf@benfinney.id.au>
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
	<87ve9d9icx.fsf@benfinney.id.au>
Message-ID: <8c7f10c60710120229t7f34f9a0l360b7bd5248dfa49@mail.gmail.com>

On 10/12/07, Ben Finney <bignose+hates-spam at benfinney.id.au> wrote:
> BlueBird <phil at freehackers.org> writes:
> This means that the Mock object automatically supports any number of
> attributes and methods by any reasonable names; the only setup needed
> beyond creating the instance is to seed it with anything you *don't*
> want returned as a Mock.

Now *that* is what the OP was talking about - that's not a Mock,
that's a Stub. See <http://tinyurl.com/26hfjd>.
.

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From donn.ingle at gmail.com  Mon Oct 29 16:45:49 2007
From: donn.ingle at gmail.com (Donn Ingle)
Date: Mon, 29 Oct 2007 22:45:49 +0200
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
Message-ID: <fg5gik$tt4$2@ger.gmane.org>

> vzcbeg vafcrpg
> 
> qrs _svaq(senzr, bow):
>     sbe anzr, inyhr va senzr.s_ybpnyf.vgrevgrzf():
>         vs inyhr vf bow:
>             erghea anzr
>     sbe anzr, inyhr va senzr.s_tybonyf.vgrevgrzf():
>         vs inyhr vf bow:
>             erghea anzr
>     envfr XrlReebe("Bowrpg abg sbhaq va senzr tybonyf be ybpnyf")
> 
> pynff K:
>     qrs qroht(frys):
>         cevag ("Pnyyre fgberf zr va %f (nzbat bgure cbffvoyr cynprf)"
>                % _svaq(vafcrpg.pheeragsenzr(1), frys))

Now that's taking i18n too far. Klingon is not a widely understood
language :D


\d



From ladynikon at gmail.com  Thu Oct  4 15:17:28 2007
From: ladynikon at gmail.com (Danyelle Gragsone)
Date: Thu, 4 Oct 2007 15:17:28 -0400
Subject: Off Topic: Gmail hates newsgroups!!!
In-Reply-To: <496954360710041211x696ebebdj3105e4271372c332@mail.gmail.com>
References: <496954360710041211x696ebebdj3105e4271372c332@mail.gmail.com>
Message-ID: <59f9c5160710041217t6adbd110jd2504ea8c01a308d@mail.gmail.com>

I just delete what people say.. so.. no ">" at all :D.


From stef.mientki at gmail.com  Sat Oct 20 06:02:09 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sat, 20 Oct 2007 12:02:09 +0200
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <1192814230.435306.145100@i13g2000prf.googlegroups.com>
References: <mailman.201.1192778546.13605.python-list@python.org>	<1192779222.618164.321910@y27g2000pre.googlegroups.com>	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>	<13hhicd14jrt5e3@corp.supernews.com>	<mailman.220.1192811880.13605.python-list@python.org>
	<1192814230.435306.145100@i13g2000prf.googlegroups.com>
Message-ID: <4719D221.30803@gmail.com>

Paul Hankin wrote:
> On Oct 19, 5:38 pm, stef mientki <stef.mien... at gmail.com> wrote:
>   
>> ... snip hand-coded debugger
>> I couldn't come up with a better solution ;-)
>>     
>
> Does pdb not suffice?
>   
thanks very much Paul,
Never heard of that before,
I looked it up, just 1 page in my book of 500 pages ;-)
I'm certainly going to study that.

> Even if it doesn't; you can look up variables without using exec,
> using locals()['x'] or globals()['x']
>
>   
Didn't know that either,
I'll try.

thanks,
Stef Mientki
> --
> Paul Hankin
>
>   



From akraemer at sbcglobal.net  Thu Oct 11 15:25:49 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Thu, 11 Oct 2007 19:25:49 -0000
Subject: storing meta data on dictionary keys
In-Reply-To: <mailman.97.1192123085.927.python-list@python.org>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
	<mailman.66.1192075270.927.python-list@python.org>
	<1192084587.386653.325480@22g2000hsm.googlegroups.com>
	<mailman.97.1192123085.927.python-list@python.org>
Message-ID: <1192130749.719935.147650@57g2000hsv.googlegroups.com>

On Oct 11, 10:17 am, Erik Jones <e... at myemma.com> wrote:

> No, duck typing and inheritance are two different things.  Duck
> typing is when you implement the same operations as another object or
> class, whereas with inheritance you get the same implementation as
> that of the parent class.

Except when you override a method ...

> With duck typing, an object "acts like"
> another object in specific contexts.

That's exactly what Str(str) does in the context dictionary look-
up ...

> With inheritance, an object is
> the same general type as another object.  You don't want string
> objects, you want objects that, in a specific case, act like strings
> but in others, I'm sure, not.  How does a concept like string
> substitution fit with your inherited objects?

Since Str(str) inherits all methods of str, those methods that return
other strings (always new objects since str is immutable) like e.g.
replace() will return str and not Str(str), and don't have the meta
data copied. Which may be a bug or a feature  ...:-)

I think the subtle difference here lies between the definition of
inheritance and duck-typing, and how both are typically used in
practice ...

> If you can, get a copy of Beautiful Code (easily had from Amazon or
> the likes).  It contains an chapter on Python's dictionary
> implementation.

Thanks for the pointer. I like to look at beautiful code.



From jcd at sdf.lonestar.org  Mon Oct  1 20:25:09 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Mon, 01 Oct 2007 20:25:09 -0400
Subject: Question about quoting style.
In-Reply-To: <470153d9$0$27239$426a74cc@news.free.fr>
References: <mailman.1366.1191268378.2658.python-list@python.org>
	<470153d9$0$27239$426a74cc@news.free.fr>
Message-ID: <47018FE5.2000605@sdf.lonestar.org>

Bruno Desthuilliers wrote:
> Steven W. Orr a ?crit :
>   
>> Python has a number of "quoting" 'options' to help """with
>> times when""" one way may be more convenient than another.
>>
>> In the world of shell scripting, I use a technique that I call minimal 
>> quoting. It works like this:
>>
>> foo=bar            # No quotes needed
>> echo $foo        # Also none needed
>> baz='Hello there'    # Don't use double quotes. No iterpolation.
>> qaz="$baz $foo and grill" # Interpolation needs double quotes.
>>
>> Is there some sort of best practices approach for when different types 
>> of quoting should be employed?
>>     
>
> First point is that Python has no "variable interpolation". Second point 
> is in Python, quoting style makes no difference wrt escape sequences 
> (\n, \t etc). Third point is that quoting is not optional when it comes 
> to string literals - but I guess you knew this one already !-)
>
> Where it makes a difference is that "triple-quoted" string literals 
> preserves newlines (ok, I guess you knew this too)
>
> IOW, it's mostly a matter of commodity: use double quotes when you don't 
> want to bother escaping sngle quotes, and vice-versa. As far as I'm 
> concerned, and since it's quite more common to have a single quote than 
> a double one in a string literal, I tend to use double-quoted strings by 
> default. But YMMV !-)
>
>   
You missed another dimension of python string types.

r'Raw strings are useful when \escaping backslashes.  Use them with
regular expressions.'
r"These are also raw.  Also use them when talking about escape sequences
like \n"
r"""Same for "\n" Here"""

u'Unicode strings are useful for multilingual or non-latin text. 
I\u2019d recommend reading more about Python's unicode handling.  It can
be a bit tricky for newcomers.'

Cheers,
Cliff


From stef.mientki at gmail.com  Wed Oct 17 18:39:45 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Thu, 18 Oct 2007 00:39:45 +0200
Subject: if instance exists problem ..
Message-ID: <47168F31.1090608@gmail.com>

hello,

I've written a convenience wrapper around ConfigObj (which is a imporved 
ConfigParser).

Now if I use an instance of the base class, I can easily test is the 
instance exists by " if ini:",
like in this example

    ini = None
    if ini:
        print 'ok',type(ini)
    else:
        print 'wrong',type(ini)
    ini = ConfigObj (filename)
    if ini:
        print 'ok',type(ini)
    else:
        print 'wrong',type(ini)

Now if I derive a new class form this:
class inifile (ConfigObj):
    def __init__ (self, filename):
        self.ini = ConfigObj ( filename , list_values = False, 
write_empty_values = True )
        self.ini.newlines = '\r\n'   # not strictly necessary
        self.Section = ''
        self.Modified = False


the test if an instance exists, always returns false.
    ini = inifile (filename)
    if ini:
        print 'ok',type(ini)
    else:
        print 'wrong',type(ini)

Why is that ?
What should I do to the same simple test for existance ?

thanks,
Stef Mientki



From phd at phd.pp.ru  Tue Oct 30 11:20:30 2007
From: phd at phd.pp.ru (Oleg Broytmann)
Date: Tue, 30 Oct 2007 18:20:30 +0300
Subject: SQLObject 0.7.9
Message-ID: <20071030152029.GB1327@phd.pp.ru>

Hello!

I'm pleased to announce the 0.7.9 release of SQLObject.

What is SQLObject
=================

SQLObject is an object-relational mapper.  Your database tables are described
as classes, and rows are instances of those classes.  SQLObject is meant to be
easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB (also
known as SAPDB).


Where is SQLObject
==================

Site:
http://sqlobject.org

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.7.9

News and changes:
http://sqlobject.org/docs/News.html


What's New
==========

News since 0.7.8
----------------

Bug Fixes
~~~~~~~~~

* Remove 'limit' from SelectResults after setting start/end so .clone()
  never sees limit again.

* Fixed a bug in sqlbuilder._LikeQuoted() - call sqlrepr() on the
  expression to escape single quotes if the expression is a string.

* Fixed StringCol and UnicodeCol: use sqlType with MSSQL.

* Fixed startswith/endswith/contains for UnicodeCol.

Other Changes
~~~~~~~~~~~~~

* Changed the default value for 'varchar' in BLOBColumns from 'auto' to False
  (so that the default type for the columns in  MySQL is BLOB, not TEXT).

* Changed the implementation type in BoolCol under MySQL from TINYINT to
  BOOL (which is a synonym for TINYINT(1)).

For a more complete list, please see the news:
http://sqlobject.org/docs/News.html

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.


From pecora at anvil.nrl.navy.mil  Wed Oct 24 17:05:00 2007
From: pecora at anvil.nrl.navy.mil (Lou Pecora)
Date: Wed, 24 Oct 2007 17:05:00 -0400
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
Message-ID: <pecora-9E92E0.17050024102007@ra.nrl.navy.mil>

In article <slrnfhvalj.67s.nick at irishsea.home.craig-wood.com>,
 Nick Craig-Wood <nick at craig-wood.com> wrote:

> Py-Fun <lorna.burns at gmail.com> wrote:
> >  I'm stuck trying to write a function that generates a factorial of a
> >  number using iteration and not recursion.  Any simple ideas would be
> >  appreciated.
> 
> Here is the math geek answer ;-)
> 
> import math
> 
> def factorial(i):
>     n = i + 1
>     return math.exp(-n)*(n**(n-0.5))*math.sqrt(2*math.pi)*(1. + 1./12/n + 
>     1./288/n**2 - 139./51840/n**3)
> 
> Works for non integer factorials also...
> 
> See here for background
> 
>   http://mathworld.wolfram.com/StirlingsSeries.html


Well, that's Sterling's formula.  You do have to worry about 
convergence/accuracy.

How about (for intergers - simple-minded version):

def factorial(i):
   fact=1.0
   for n in xrange(i):
      fact=n*fact
   return fact

There might even be an array method that can be adapted to get the 
product.  Is there a product method? (analogous to a sum method)

Then you could use,

   arr=arange(i)+1
   fact=arr.product()  # or something like that

-- 
-- Lou Pecora


From cjw at sympatico.ca  Fri Oct 19 12:21:25 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Fri, 19 Oct 2007 12:21:25 -0400
Subject: class vs type
In-Reply-To: <87wstjtfip.fsf@mulj.homelinux.net>
References: <mailman.208.1192798489.13605.python-list@python.org>
	<87wstjtfip.fsf@mulj.homelinux.net>
Message-ID: <ffali6$op5$1@ger.gmane.org>

Hrvoje Niksic wrote:
> "Colin J. Williams" <cjw at sympatico.ca> writes:
> 
>> In Python Types and Objects, Shalabh Chaturvedi says (in the Python
>> 3.0 documentation - New Style Classes)
>>
>> "The term class is traditionally used to imply an object created by
>> the class statement. However, classes are now synonymous with
>> types. Built-in types are usually not referred to as classes. This
>> book prefers using the term type for both built-in and user created
>> types."
>>
>> Do we need two different words to describe what is essentially the
>> same thing?
> 
> We don't, not anymore, which is why the author chooses the word "type"
> for both in the last sentence.
In this case, why do we continue to use 
the word class to generate a type?
> 
> But, as the author correctly explains, class and type used to not be
> the same thing.  Classes were created with 'class', and they were
> fundamentally different from C types created in extension modules.
> All instances of old-style classes are of type 'instance', which is
> why they have the __class__ attribute, so you can find their actual
> class.  (Functions like "isinstance" contain hacks to support
> old-style classes.)  New-style classes elevate Python-level classes to
> types equal to the built-in ones, which is why the word "type" is now
> sufficient for both.
Doesn't Python 3 provide an opportunity 
to move away from discussions about
new_style vs old-style?  This an 
opportunity to treat old-style as a
historical artefact, not requiring 
current explanation.

Colin W.



From praddyjindal at gmail.com  Fri Oct 26 08:31:50 2007
From: praddyjindal at gmail.com (Pradeep Jindal)
Date: Fri, 26 Oct 2007 18:01:50 +0530
Subject: object inheritance
In-Reply-To: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
Message-ID: <68a7050b0710260531xafb41fcyfa22bc8b34b517da@mail.gmail.com>

Can you tell any specific use case for doing this?

Regards,
Pradeep

On 10/26/07, Anand <anandology at gmail.com> wrote:
> I am trying to implement some kind of object inheritance. Just like
> one class can extend from another, I want to do the same on objects
> dynamically.
>
> I just thought that I can share my excitement here.
>
> Suppose there are classes A and B and their instances a and b.
>
> class A:
>     def foo(self): self.say('foo')
>     def say(self, msg):
>         print 'a.say', msg
>
> class B:
>     def say(self, msg):
>         print 'b.say', msg
>
> a = A()
> b = B()
>
> I want b to inherit the behavior of a.
>
> >>> b.extend_from(a)
> >>> b.foo()
> b.say foo
>
> I looked around and found that some people talked about similar ideas,
> but didn't find any concrete implementation.
>
> I came up with the following implementation using meta-classes.
>
> class ExtendMetaClass(type):
>     def __init__(cls, *a, **kw):
>         # take all attributes except special ones
>         keys = [k for k in cls.__dict__.keys() if not
> k.startswith('__')]
>         d = [(k, getattr(cls, k)) for k in keys]
>
>         # remove those attibutes from class
>         for k in keys:
>             delattr(cls, k)
>
>         # remember then as dict _d
>         cls._d = dict(d)
>
>         def curry(f, arg1):
>             def g(*a, **kw):
>                 return f(arg1, *a, **kw)
>             g.__name__ = f.__name__
>             return g
>
>         def _getattr(self, name):
>             """Get value of attribute from self or super."""
>             if name in self.__dict__:
>                 return self.__dict__[name]
>             elif name in self._d:
>                 value = self._d[name]
>                 if isinstance(value, types.MethodType):
>                     return curry(value, self)
>                 else:
>                     return value
>             else:
>                 if self._super != None:
>                     return self._super._getattr(name)
>                 else:
>                     raise AttributeError, name
>
>         def __getattr__(self, name):
>             """Returns value of the attribute from the sub object.
>             If there is no sub object, self._getattr is called.
>             """
>             if name.startswith('super_'):
>                 return self._super._getattr(name[len('super_'):])
>
>             if self._sub is not None:
>                 return getattr(self._sub, name)
>             else:
>                 return self._getattr(name)
>
>         def extend_from(self, super):
>             """Makes self extend from super.
>             """
>             self._super = super
>             super._sub = self
>
>         cls.__getattr__ = __getattr__
>         cls._getattr = _getattr
>         cls._super = None
>         cls._sub = None
>         cls.extend_from = extend_from
>
> class Extend:
>     __metaclass__ = ExtendMetaClass
>     def __init__(self, super=None):
>         if super:
>             self.extend_from(super)
>
> And the above example becomes:
>
> class A(Extend):
>     def foo(self): self.say('foo')
>     def say(self, msg):
>         print 'a.say', msg
>
> class B(Extend):
>     def say(self, msg):
>         print 'b.say', msg
>         # self.super_foo calls foo method on the super object
>         self.super_say('super ' + msg)
>
> a = A()
> b = B()
>
> >>> b.extend_from(a)
> >>> b.foo()
> b.say foo
> a.say super foo
>
> There are one issue with this approach. Once b extends from a,
> behavior of a also changes, which probably should not. But that
> doesn't hurt me much.
>
> Any comments?
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From filip.salomonsson at gmail.com  Tue Oct  2 10:10:02 2007
From: filip.salomonsson at gmail.com (Filip Salomonsson)
Date: Tue, 2 Oct 2007 16:10:02 +0200
Subject: Why doesn't Python's "robotparser" like Wikipedia's "robots.txt"
	file?
In-Reply-To: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>
References: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>
Message-ID: <2f334ccd0710020710y1859ef7ai553346f4a16616d4@mail.gmail.com>

On 02/10/2007, John Nagle <nagle at animats.com> wrote:
>
> But there's something in there now that robotparser doesn't like.
> Any ideas?

Wikipedia denies _all_ access for the standard urllib user agent, and
when the robotparser gets a 401 or 403 response when trying to fetch
robots.txt, it is equivalent to "Disallow: *".

http://infix.se/2006/05/17/robotparser

It could also be worth mentioning that if you were planning on
crawling a lot of Wikipedia pages, you may be better off downloading
the whole thing instead: <http://download.wikimedia.org/>
(perhaps adding <http://code.google.com/p/wikimarkup/> to convert the
wiki markup to HTML).
-- 
filip salomonsson


From steve at REMOVE-THIS-cybersource.com.au  Tue Oct  9 19:07:57 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 09 Oct 2007 23:07:57 -0000
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<mailman.0.1191958235.927.python-list@python.org>
Message-ID: <13go2edckqnrrf0@corp.supernews.com>

On Tue, 09 Oct 2007 21:25:38 +0200, Laszlo Nagy wrote:

> a = 1
> a+= 1 # The compiler will probably optimize this and the Python bytecode
> interpreter will not rebind 'a' here, just increment the integer in
> memory.

No. This is Python, not C. You can't increment integers in memory. 
Integers are immutable objects, not raw bytes:

>>> x = 1
>>> id(x)
150830896
>>> x += 1
>>> id(x)
150830884




-- 
Steven.


From borismok at iwow.com.sg  Mon Oct  1 03:41:37 2007
From: borismok at iwow.com.sg (Boris Mok)
Date: Mon, 01 Oct 2007 15:41:37 +0800
Subject: Function return a dictionary
Message-ID: <4700A4B1.5000801@iwow.com.sg>

Hi all,

I'm doing a function which needs return an arrary -- or more specially a 
dictionary data type.
I have a sample like this

def AFC():
  v["a"] = 1
  return v

v = AFC()
print v["a"]

with error
NameError: global name 'v' is not defined

how do I go about it?

Thanks in advance.
Boris Mok


From deets at nospam.web.de  Sat Oct 13 12:42:01 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 13 Oct 2007 18:42:01 +0200
Subject: email libraries and threads
In-Reply-To: <1192291976.922891.242700@i38g2000prf.googlegroups.com>
References: <1192291976.922891.242700@i38g2000prf.googlegroups.com>
Message-ID: <5ncaqvFhliojU1@mid.uni-berlin.de>

rodmc schrieb:
> Hi,
> 
> I am writing a threaded application, part of which relies on sending
> messages to users. However I cannot get the smtplib and some other
> email related libraries to work inside threads (they work ok when not
> in threads). Is there a problem with using threads and email? If so is
> there a solution available or any tips which people can give me?

I doubt that there are problems using the modules from within threads - 
at least as long as you don't share connecitons and the like between 
threads.

So - until you show us some of your troubles by providing actual code 
examples and error messages, nobody will be able to help you.

Diez


From ldo at geek-central.gen.new_zealand  Thu Oct  4 03:40:24 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 20:40:24 +1300
Subject: slice last 4 items from a list
References: <fdrl81$13c$1@solaris.cc.vt.edu>
	<1191286234.855980.118170@g4g2000hsf.googlegroups.com>
Message-ID: <fe25d8$v42$3@lust.ihug.co.nz>

In message <1191286234.855980.118170 at g4g2000hsf.googlegroups.com>, John
Machin wrote:

> On Oct 2, 6:27 am, brad <byte8b... at gmail.com> wrote:
>> Is this the correct way to slice the last 4 items from a list?
>>
>> x = [1,2,3,4,5,6,7,8,9]
>> print x[-4:]
>>
>> It works, but is it Pythonic?
> 
> It's Pythonic. It's also unambiguous, unlike your specification, which
> could be interpreted as 'chop off the last 4 items from a list' ...

No, the OP is using "slice" in the technically correct CS sense.


From paul.hankin at gmail.com  Thu Oct 18 03:52:57 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 18 Oct 2007 07:52:57 -0000
Subject: Last iteration?
In-Reply-To: <1192661157.684855.325510@z24g2000prh.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
	<1192605396.249377.217430@i38g2000prf.googlegroups.com>
	<1192619565.311026.38160@v23g2000prn.googlegroups.com>
	<1192661157.684855.325510@z24g2000prh.googlegroups.com>
Message-ID: <1192693977.176324.179730@i38g2000prf.googlegroups.com>

On Oct 17, 11:45 pm, Raymond Hettinger <pyt... at rcn.com> wrote:
> [Paul Hankin]
>
> > def lastdetector(iterable):
> >     t, u = tee(iterable)
> >     return izip(chain(imap(lambda x: False, islice(u, 1, None)),
> >         [True]), t)
>
> Sweet!  Nice, clean piece of iterator algebra.
>
> We need a C-speed verion of the lambda function, something like a K
> combinator that consumes arguments and emits constants.

Perhaps, but I think you'll need a better use-case than this :)

Actually, would a c-version be much faster?

--
Paul Hankin



From ldo at geek-central.gen.new_zealand  Sat Oct  6 02:16:47 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sat, 06 Oct 2007 19:16:47 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
	<fe4mst$jic$1@lust.ihug.co.nz> <5mm85kFe9gesU1@mid.uni-berlin.de>
Message-ID: <fe798f$8h7$1@lust.ihug.co.nz>

In message <5mm85kFe9gesU1 at mid.uni-berlin.de>, Marc 'BlackJack' Rintsch
wrote:

> To me a `variable` is made of a name, a memory address, a data type, and
> a value.  In languages like C the address and type are attached to the
> name while in Python both are attached to the value.

How does C++ with RTTI fit into your picture, then?


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 22:52:13 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 04:52:13 +0200
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <pn8dg3d7iu3fpn7pthn3orlmvvqmqvfi7v@4ax.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>	<13gcjeqbhmh152c@corp.supernews.com>	<mailman.1586.1191596681.2658.python-list@python.org>	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
	<47069e40$0$16410$426a74cc@news.free.fr>
	<pn8dg3d7iu3fpn7pthn3orlmvvqmqvfi7v@4ax.com>
Message-ID: <4706a7a9$0$12477$426a34cc@news.free.fr>

Wayne Brehaut a ?crit :
> On Thu, 04 Oct 2007 04:12:04 +0200, Bruno Desthuilliers
> <bdesth.quelquechose at free.quelquepart.fr> wrote:
> 
> 
>>J. Clifford Dyer a ?crit :
(snip)
>>>Well, it's also unpythonic to start numbering a sequence at 1, but
>>>it's clearly the right thing to do in this case.
>>
>>As far as I'm concerned, if I had to number a magazine about 
>>programming, I'd obviously start with 0.
> 
> And since the "first" issue is free that would be best here too.
> 
>>Then it would be n?1, n?10, 
>>n?11, n?100 etc !-)
> 
> But probably with enough leading zeros to last the expected lifetime
> (8 bits should about do it?)  so they'd sort properly:
> 
> 0000 0000
> 0000 0001
> etc.

Mmm... sort of reminds me of y2k.



From paul.hankin at gmail.com  Wed Oct 17 17:05:06 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 21:05:06 -0000
Subject: Need help in updating a global variable by a thread
In-Reply-To: <1192646888.230515.223140@k35g2000prh.googlegroups.com>
References: <1192646888.230515.223140@k35g2000prh.googlegroups.com>
Message-ID: <1192655106.829642.231180@k35g2000prh.googlegroups.com>

On Oct 17, 7:48 pm, dedalusena... at gmail.com wrote:
> Hello Folks,
>
> My first posting here and I am a stuck in figuring out the exact way
> to update a global variable from within a function that doesnt return
> any value (because the function is a target of the thread and I dont
> know how exactly return would work in such a case). I am sure I am
> missing something very fundamental here. The essential pieces of my
> code that cause the problem would be something like this:
> ---------------------------------------------
> lookuptab = {'1.9.7.3':'Bangkok','1.9.60.3':'Sydney'}
>
> results = {}
>
> for val in lookuptab.values():
>     results[val]=0
>
> def testt(loc):
>        global results
>        results[loc] = 1
>        return results[loc]
>
> for x in lookuptab.values():
>       thread = threading.Thread(target=testt,args=(x))
>       thread.start()
> print results

When I try to run this I get a 6-arguments-instead-of-1 error because
you wrote args=(x) instead of args=(x,). I wonder why you don't see
this error?

Apart from that the code works, except you need to wait for the
threads to finish executing before you see the updated results. Have a
look at threading.join to see how you might do that.

--
Paul Hankin



From hniksic at xemacs.org  Mon Oct  8 15:50:52 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 08 Oct 2007 21:50:52 +0200
Subject: Don't use __slots__
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com> <13gk96sks58ad9f@corp.supernews.com>
Message-ID: <87ir5hidwj.fsf@mulj.homelinux.net>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:

> Well, I've read the thread, and I've read the thread it links to,
> and for the life of me I'm still no clearer as to why __slots__
> shouldn't be used except that:
[...]
> But is there actually anything *harmful* that can happen if I use
> __slots__?

Here is one harmful consequence: __slots__ breaks multiple
inheritance:

class A(object):
  __slots__ = ['a', 'b']

class B(object):
  __slots__ = ['c']

class AB(A, B):
  pass

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: Error when calling the metaclass bases
    multiple bases have instance lay-out conflict

Even if A and B had the exact same slots, for example ['a', 'b'], it
wouldn't make a difference.  AB explicitly setting __slots__ to
something like ['a', 'b', 'c'] doesn't help either.  But that is only
a technical answer to your technical question which misses the real
problem people like Aahz and Guido have with __slots__.  (I don't
claim to represent them, of course, the following is my
interpretation.)

The backlash against __slots__ is a consequence of it being so easy to
misunderstand what __slots__ does and why it exists.  Seeing __slots__
has led some people to recommend __slots__ to beginners as a way to
"catch spelling mistakes", or as a way to turn Python's classes into
member-declared structures, a la Java.  For people coming from Java
background, catching mistakes as early as possible is almost a dogma,
and they are prone to accept the use of __slots__ (and living with the
shortcomings) as a rule.

Python power users scoff at that because it goes against everything
that makes Python Python.  Use of __slots__ greatly reduces class
flexibility, by both disabling __dict__ and __weakref__ by default,
and by forcing a tight instance layout that cripples inheritance.
With people using __slots__ for the majority of their classes, it
becomes much harder for 3rd-party code to attach an unforeseen
attribute to an existing object.  Even with single inheritance,
__slots__ has unintuitive semantics because subclasses automatically
get __dict__ and __weakref__, thereby easily breaking the "benefits"
of their use.

__slots__ is a low-level tool that allows creation of dict-less
objects without resorting to Python/C.  As long as one understands it
as such, there is no problem with using it.


From jjl at pobox.com  Tue Oct 16 16:39:07 2007
From: jjl at pobox.com (John J. Lee)
Date: Tue, 16 Oct 2007 20:39:07 GMT
Subject: Setting a timeout for a cookie
References: <1192460963.317397.213010@e9g2000prf.googlegroups.com>
	<1192466106.160978.28400@i38g2000prf.googlegroups.com>
Message-ID: <87abqiokus.fsf@pobox.com>

Peter Bengtsson <peterbe at gmail.com> writes:

> On Oct 15, 4:09 pm, sophie_newbie <paulgeele... at gmail.com> wrote:
>> Hi,
>>
>> I'm wondering how do you set a 'timeout' or expiry date/time for a
>> cookie set using a python cgi script. I can set a cookie ok but I
>> dunno how to set the expiry time so it always expires at the end of
>> the session.
>>
>
> Easy, you don't. It's only if you set a timeout (aka. expires
> parameter) that it will last longer than the session.
> Just don't set it and it'll last till the browser is shut down.

And don't set a max-age parameter either (max-age and expires do
essentially the same thing).


John


From http  Fri Oct  5 18:22:11 2007
From: http (Paul Rubin)
Date: 05 Oct 2007 15:22:11 -0700
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
	<1191616293.965858.43000@d55g2000hsg.googlegroups.com>
Message-ID: <7xd4vtw6b0.fsf@ruckus.brouhaha.com>

Giampaolo Rodol? <gnewsg at gmail.com> writes:
> def test_answer():
>     assert 42 == 43
> 
> What's the equivalent of unittest's "assertRaises"?

def test_raises():
    try:
       thingy()
       assert 42 == 43
    except GoodException:
       pass


From msc at es.aau.dk  Tue Oct 30 09:35:52 2007
From: msc at es.aau.dk (Martin Sand Christensen)
Date: Tue, 30 Oct 2007 14:35:52 +0100
Subject: Proxying downloads
References: <mailman.643.1193748125.13605.python-list@python.org>
Message-ID: <wdwzly0lo7b.fsf@es.aau.dk>

> But I can't figure out how I would solve the following:
>
> 1 Alice asks Sam for "foobar.iso"
> 2 Sam can't find "foobar.iso" in "cachedir"
> 3 Sam requests "foobar.iso" from uplink
> 4 Sam saves and forwards to Alice
> 5 At about 30 % of the download Bob asks Sam for "foobar.iso"
> 6 How do I serve Bob now?

Let every file in your download cache be represented by a Python object.
Instead of streaming the file directly to the clients, you can stream
the objects. The object will know if the file it represents has finished
downloading or not, where the file is located etc. This way you can
also, for the sake of persistence, keep partially downloaded files
separate from the completely downloaded files, as per a previous
suggestion, so that you won't start serving half files after a crash,
and it'll be completely transparent in all code except for your proxy
file objects.

Martin


From josiah.carlson at gmail.com  Tue Oct  2 11:38:37 2007
From: josiah.carlson at gmail.com (Josiah Carlson)
Date: Tue, 02 Oct 2007 15:38:37 -0000
Subject: ANN: PyPE 2.8.7
In-Reply-To: <b39cf$46fa0f3f$83aef404$19681@news1.tudelft.nl>
References: <mailman.1037.1190715307.2658.python-list@python.org>
	<f082a$46f8e4f1$83aef404$21115@news1.tudelft.nl>
	<1190782361.392001.48790@g4g2000hsf.googlegroups.com>
	<b39cf$46fa0f3f$83aef404$19681@news1.tudelft.nl>
Message-ID: <1191339517.464462.79880@r29g2000hsg.googlegroups.com>

On Sep 26, 12:50 am, stef <s.mien... at id.umcn.nl> wrote:
> thebjorn wrote:
> > On Sep 25, 12:37 pm, stef <s.mien... at id.umcn.nl> wrote:
>
> >> Josiah Carlson wrote:
>
> >>> === What isPyPE? ===
> >>>PyPE(Python Programmers' Editor) was written in order to offer a
> >>> lightweight but powerful editor for those who think emacs is too much
> >>> and idle is too little. Syntax highlighting is included out of the box,
> >>> as is multiple open documents via tabs.
>
> >> sounds very good,
> >> so now I want to try it ...
> >> ... the windows ansi zip file is corrupted :-(
> >> ... the unicode version crashes :-(
>
> >> This is what the log file tells:
> >> Traceback (most recent call last):
> >>   File "pype.py", line 110, in ?
> >>   File "zipextimporter.pyc", line 78, in load_module
> >>   File "configuration.pyc", line 149, in ?
> >> Exception: Unable to create config directory: 'G:\\.pype'
>
> >> I don't have a G-drive ;-)
>
> >> cheers,
> >> Stef Mientki
>
> > You must be doing it wrong.
>
> Of course ;-)
> but what am I doing wrong ?
> cheers,
> Stef
>
> > Works flawlessly for me (no g: drive here
> > either) -- well, except that it doesn't have Emacs keybindings <wink>.
>
> > -- bjorn

We ended up emailing directly.  His problems were related to less-than-
correct HOME, USERPROFILE, HOMEDRIVE, and/or HOMEPATH values.

When such things happen, users can either fix their profile paths, or
run PyPE with --standalone, which will force the profile path to be
the same path as the path that PyPE is running out of.

Also, the original PyPE 2.8.7 ansi upload was incomplete, which I
remedied shortly thereafter (and later replaced with PyPE 2.8.8).



From jason.dusek at gmail.com  Thu Oct 11 21:37:16 2007
From: jason.dusek at gmail.com (jsnx)
Date: Fri, 12 Oct 2007 01:37:16 -0000
Subject: the secret life of zombies
Message-ID: <1192153036.925892.248220@v29g2000prd.googlegroups.com>

I'd like a program, call it 'pipe-fitter', that connects and
interactive app
to three named pipes. The program will filter out EOF from the input
pipe, to
keep the interactive program alive for multiple commands. When the
interactive
app dies, by receiving 'exit', say, then we are done with it -- pipe-
fitter
bails out.

I've tried writing pipe-fitter in the shell (infinite loop), C (could
not get
off the ground at all with this one) and now Python. After trying a
few
different approaches, I was turned on to the subprocess module by
someone on
IRC. My program is almost right, except for damn zombies. Here is pipe-
fitter:

    https://svn.j-s-n.org/public/i-can-has-root/python/pipe-fitter.py

Say we make some fifos in a dir 'pipes'

  mkdir pipes
  mkfifo pipes/i pipes/o pipes/e

Now we call pipe-fitter thusly:

  pipe-fitter.py -d pipes sh -xv

This runs `sh -xv` with stdin, stdout and stderr connected to pipes/i,
pipes/o
and pipes/e respectively. We open three new terminals. In the first
one, we
put:

  echo "ls -l" > pipes/i

and in the second:

  cat pipes/o

and in the third:

  cat pipes/e

Once we enter the final command, the 'echo' returns and the text comes
streaming out in the 2nd and 3rd terminals. Wonderful. Now, let's try
`exit`.

  echo 'exit' > pipes/i

As expected, cat will terminate in the 2nd and 3rd terminals, with the
3rd
terminal displayin:

  + exit
  exit

However, pipe-fitter.py is still running. Why is that? It did not
'poll' at
the right time, it seems. If I try stuffing more input into pipes/i, I
get

  IOError: [Errno 32] Broken pipe

and pipe-fitter.py finally quits. Not exactly what I was hoping for.

Prowling around with PS, I find that the `sh -xv` called from within
pipe-fitter is a zombie for a spell; if pipe-fitter fails to catch it
at the
right time, there is no avoiding the IOError. I'm using
subprocess.Popen.poll() in a loop, to catch the process's termination
-- is
there something else I should be doing?



From bilgarey at bellsouth.net  Wed Oct 17 18:46:47 2007
From: bilgarey at bellsouth.net (Bill Garey)
Date: Wed, 17 Oct 2007 18:46:47 -0400
Subject: Python Labs Move
Message-ID: <000601c8110f$999bdf10$0300a8c0@yourpa86z1i3g7>

What is PYTHON 2.2.1   and what does it do? I see  the Program on my list of programs but don't know how to use it ,  or what it is! bilgarey at bellsouth.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/c2393b9e/attachment.html>

From deets at nospam.web.de  Thu Oct 25 07:27:40 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 25 Oct 2007 13:27:40 +0200
Subject: Parallel insert to postgresql with thread
References: <1193310044.750654.157320@22g2000hsm.googlegroups.com>
Message-ID: <5obctcFm7sogU1@mid.uni-berlin.de>

Abandoned wrote:

> Hi..
> I use the threading module for the fast operation. But i have some
> problems..
> This is my code sample:
> =================
> conn =
> psycopg2.connect(user='postgres',password='postgres',database='postgres')
> cursor = conn.cursor()
> class paralel(Thread):
>     def __init__ (self, veriler, sayii):
>         Thread.__init__(self)
>     def run(self):
>          save(a, b, c)
> 
> def save(a,b,c):
>             cursor.execute("INSERT INTO keywords (keyword) VALUES
> ('%s')" % a)
>             conn.commit()
>             cursor.execute("SELECT
> CURRVAL('keywords_keyword_id_seq')")
>             idd=cursor.fetchall()
>             return idd[0][0]
> 
> def start(hiz):
>     datas=[........]
>     for a in datas:
>         current = paralel(a, sayii)
>         current.start()
> ==================
> And it gives me different errors to try parallel insert. My querys
> work in normal operation but in paralel don't work.
> How can i insert data to postgresql the same moment ?
> errors:
> no results to fetch
> cursor already closed

DB modules aren't necessarily thread-safe. Most of the times, a connection
(and of course their cursor) can't be shared between threads.

So open a connection for each thread.

Diez


From mccredie at gmail.com  Sat Oct  6 12:28:36 2007
From: mccredie at gmail.com (Matimus)
Date: Sat, 06 Oct 2007 16:28:36 -0000
Subject: How to do transparent (opaque) windows from Python
In-Reply-To: <mailman.1611.1191684382.2658.python-list@python.org>
References: <mailman.1611.1191684382.2658.python-list@python.org>
Message-ID: <1191688116.261156.114840@19g2000hsx.googlegroups.com>

On Oct 6, 8:21 am, Don Taylor <nospamforme... at gmail.com> wrote:
> I want to build an application in Python that can show an opaque window
> so that you can still see and type into any window that it covers.
>
> Sort of like a software mylar transparency sheet placed over the screen.
>   I need to be able to type 'through' the transparency into the
> underlying application, focus remains on the underlying window.
>
> My application is assisted typing, but I can envisage other uses such as
>   on-screen rulers.
>
> While I would like this to be multi-platform, I need it in MS-Windows.
>
> Does anyone know of any Python packages that can do this type of thing?

I don't think opaque means what you think it means:
http://mw1.merriam-webster.com/dictionary/Opaque. The best option for
transparency is probably to look at the .NET framework in Windows, via
IronPython. I only say that because I know that I've seen demos of
transparent windows in .NET that were native to Windows and simple to
implement. I don't know if you can do transparency in wx, but I would
certainly check out the wxPython demos first to see if it has
anything. http://www.wxpython.org. wxpython would give you cross
platform support, if it works.

Matt



From exarkun at divmod.com  Tue Oct  9 12:06:32 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 9 Oct 2007 12:06:32 -0400
Subject: Native class methods
In-Reply-To: <87myusi96f.fsf@keizer.soze.com>
Message-ID: <20071009160632.8162.1253984535.divmod.quotient.20550@ohm>

On 09 Oct 2007 17:45:12 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
>"Chris Mellon" <arkanes at gmail.com> writes:
>
>> On 09 Oct 2007 17:20:09 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
>> >
>> > Is there an easy way to implement a specific method of a Python class
>> > in C? Like a native method in Java? I would really like to do the
>> > majority of my class code in Python and just do one or two methods
>> > in C.
>> >
>> >  S.
>> >
>>
>> Weave kinda does this - you can use it write inline C code, which it
>> extracts and compiles for you. (http://scipy.org/Weave)
>>
>> You might also want to look at Pyrex and/or Cython, which let you
>> write in a Python-like language that is compiled to C.
>> (http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/ and
>> http://cython.org).
>>
>> Depending on what you want to do in C, just writing it as a normal
>> shared library and calling it with ctypes might also be an effective
>> solution. (in the standard library, as of 2.5)
>
>Yeah I'm really trying to do this without any dependencies on external
>libraries. The ctypes way looks interesting but I had really hoped for
>something more JNI-like :-/
>

JNI is awful.  I can't imagine why you'd want something like it.  However,
since you do, why don't you just use the CPython/C API?  It's the direct
equivalent of JNI (sorry, it's not quite as complex or horrible, though).

  http://docs.python.org/api/api.html

Jean-Paul


From rbonvall at gmail.com  Tue Oct 23 13:05:40 2007
From: rbonvall at gmail.com (Roberto Bonvallet)
Date: Tue, 23 Oct 2007 17:05:40 -0000
Subject: Normalize a polish L
In-Reply-To: <1193093420.688395.154860@t8g2000prg.googlegroups.com>
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<1192485438.934146.139740@q5g2000prf.googlegroups.com>
	<1192553507.049705.17200@z24g2000prh.googlegroups.com>
	<1193093420.688395.154860@t8g2000prg.googlegroups.com>
Message-ID: <1193159140.635667.89030@k35g2000prh.googlegroups.com>

On Oct 22, 7:50 pm, Mike Orr <sluggos... at gmail.com> wrote:
> Well, that gets into official vs unofficial conversions.  Does the
> Spanish Academy really say '?' should be converted to 'u'?

No, but it's the only conversion that makes sense.  The only Spanish
letter that doesn't have a standard common conversion by convention
is  '?', which is usually ASCIIfied as n, nn, gn, nh, ni, ny, ~n, n~,
or N, with all of them being frequently seen on the Internet.

> But whether that should be hardcoded
> into a blog URL library is different matter, and if it is there should
> probably be plugin tables for different preferred standards.

Actually there is a hardcoded conversion, that is dropping all
accented letters altogether, which is IMHO the worst possible
convention.  I have a gallery of pictures of Valpara?so and Vi?a del
Mar whose URL is .../ValparaSoViADelMar.  And if I wrote a blog entry
about ping?inos and ?and?es, it would appear probably as .../ping-inos-
and-and-es.  Ugly and off-topic :)

--
Roberto Bonvallet



From durumdara at gmail.com  Tue Oct  9 08:56:17 2007
From: durumdara at gmail.com (durumdara)
Date: Tue, 09 Oct 2007 14:56:17 +0200
Subject: Lamaizm... XML problem...
Message-ID: <470B7A71.30202@gmail.com>

Hi!

Something makes me crazy!!!
I wanna read some XML, but everytime I got "None" for the value of prop:

The code is:

from xml.dom import minidom
import sys

ResultList = []

def LoadProps(PropTag):
    print PropTag
    t_forms = PropTag.getElementsByTagName('form')
    for t_form in t_forms:
        t_comps = t_form.getElementsByTagName('component')
        for t_comp in t_comps:
            t_props = t_comp.getElementsByTagName('prop')
            for t_prop in t_props:
                attrs = t_prop.attributes.keys()
                print attrs
                print t_prop.nodeName
                print t_prop.nodeType
                print [t_prop.nodeValue]
                sys.exit()
   

doc = minidom.parse('c:\\teszt3.xml')
print doc
t_langfile = doc.documentElement
t_props = doc.getElementsByTagName('properties')[0]
t_constants = doc.getElementsByTagName('constants')[0]
LoadProps(t_props)

-------------------
The result is:

 >>>
<xml.dom.minidom.Document instance at 0x0172A3C8>
<DOM Element: properties at 0x1739378>
[u'id', u'name']
prop
1
[None]
 >>>
-------------------

The source file is:

<?xml version="1.0" encoding="windows-1250"?>
<langfile>
<properties>
<form>
<component>
<prop id="aaaa" name ="bbbb">cccc</prop>
</component>
</form>
</properties>
<constants>
</constants>
</langfile>
-------------------
I can get the attrs, but I can't get nodeValue (cccc)... I got None for it.

Why???

Please help me a little!!! I'm sure that I miss st, but I don't know 
what is that... :-(

Thanks for it:
    dd
-------------- next part --------------
A non-text attachment was scrubbed...
Name: teszt3.xml
Type: text/xml
Size: 216 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/695c657e/attachment.xml>

From paul.hankin at gmail.com  Wed Oct 17 17:40:40 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 21:40:40 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192655036.279184.255720@q3g2000prf.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
Message-ID: <1192657240.005464.35770@z24g2000prh.googlegroups.com>

On Oct 17, 10:03 pm, Debajit Adhikary <debaj... at gmail.com> wrote:
> How does "a.extend(b)" compare with "a += b" when it comes to
> performance? Does a + b create a completely new list that it assigns
> back to a? If so, a.extend(b) would seem to be faster. How could I
> verify things like these?

Use a += b rather than a.extend(b): I'm not sure what I was thinking.
Anyway, look at 'timeit' to see how to measure things like this, but
my advice would be not to worry and to write the most readable code -
and only optimise if your code's runnign too slowly.

To answer your question though: a += b is *not* the same as a = a + b.
The latter would create a new list and assign it to a, whereas a += b
updates a in-place.

--
Paul Hankin



From ekozlowski1 at gmail.com  Sat Oct 27 01:30:43 2007
From: ekozlowski1 at gmail.com (Edward Kozlowski)
Date: Fri, 26 Oct 2007 22:30:43 -0700
Subject: simple question on dictionary usage
In-Reply-To: <ffuerv$12ih$1@stationair.kjsl.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
Message-ID: <1193463043.912167.175890@57g2000hsv.googlegroups.com>

On Oct 26, 11:29 pm, Frank Stutzman <stutz... at skywagon.kjsl.com>
wrote:
> My apologies in advance, I'm new to python
>
> Say, I have a dictionary that looks like this:
>
> record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
>         'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339',
>         'E6': '1182', 'RPM': '996', 'C6': '311', 'C5': '300',
>         'C4': '349', 'CLD': '0', 'E5': '1148', 'C2': '329',
>         'MAP': '15', 'OIL': '167', 'HP': '19', 'E1': '1137',
>         'MARK': '', 'E3': '1163', 'TIME': '15:43:54',
>         'E2': '1169'}
>
> From this dictionary I would like to create another dictionary calld
> 'egt') that has all of the keys that start with the letter 'E'.  In
> otherwords it should look like this:
>
> egt = {'E6': '1182','E1': '1137','E4': '1157','E5': '1148',
>        'E2': '1169','E3': '1163'}
>
> This should be pretty easy, but somehow with all my googling I've
> not found a hint.
>
> Thanks in advance
>
> --
> Frank Stutzman

I think this should do the trick.  There's probably something more
concise than this, but I can't think of it at the moment.

egt = {}
for key in record:
    if key.startswith('E'):
        egt[key] = record[key]

print egt
{'E5': '1148', 'E4': '1157', 'E6': '1182', 'E1': '1137', 'E3': '1163',
'E2': '1169'}


-Edward Kozlowski



From marco at sferacarta.com  Mon Oct 22 12:27:23 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Mon, 22 Oct 2007 18:27:23 +0200
Subject: Iteration for Factorials
In-Reply-To: <mailman.332.1193067904.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<5o3jalFl0n43U1@mid.uni-berlin.de>	<1193056647.416562.36150@q3g2000prf.googlegroups.com>	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>	<1193057676.680959.71780@v23g2000prn.googlegroups.com>	<1193064348.526006.183080@q5g2000prf.googlegroups.com>	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<mailman.332.1193067904.13605.python-list@python.org>
Message-ID: <Jb4Ti.72$BB6.22@tornado.fastwebnet.it>

Tim Golden wrote:

>>  From the cookbook, this time.
>> It satisfies the requirements nicely  ;)
>>
>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691
> 
> [... snip the ultimate general-purpose answer to the OP's question ...
> 
> I really hope that's a wink up there, Marco.

The wink is in the second line of my post... more for the "do the least 
amount of work to meet the requirements" people that for the OP

> The poor guy was just trying to get his homework done!

I don't see how my answer is in any way worse than those based on 
lambda. Maybe I'm just envious because when I was his age I couldn't 
google for answers. He should at least be able to do that, shouldn't he?
But wait. That would mean understanding what a factorial is. That would 
require a second search, or a textbook, or an understanding of 
arithmetics before programming with or without recursion. Should we 
blame the teachers?


From kyosohma at gmail.com  Tue Oct  2 09:38:48 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 02 Oct 2007 13:38:48 -0000
Subject: file open dialog from within PythonWin
In-Reply-To: <1191329783.509586.159380@d55g2000hsg.googlegroups.com>
References: <1191329783.509586.159380@d55g2000hsg.googlegroups.com>
Message-ID: <1191332328.492726.63530@o80g2000hse.googlegroups.com>

On Oct 2, 7:56 am, aine_ca... at yahoo.com wrote:
> Hi,
>
> I want to open a file seach dialog from within my python script which
> I run from within PythonWin. I also have the wxPython package
> installed.
>
> How might I do this?
>
> Thanks,
>
> Aine

Oh yeah. You might find this helpful too:

http://wiki.wxpython.org/Getting_Started

Mike



From Mensanator at aol.com  Tue Oct 23 01:13:41 2007
From: Mensanator at aol.com (Mensanator at aol.com)
Date: Tue, 23 Oct 2007 01:13:41 EDT
Subject: Iteration for Factorials
Message-ID: <c52.23dbd5fa.344edd05@aol.com>

 
In a message dated 10/22/2007 8:46:59 PM Central Daylight Time, 
python.list at tim.thechases.com writes:

> > Still, why do you want None instead of raisng an exception
> > (as is the case in other factorial implementations)?
> 
> A null value is as good/bad as raising an exception in my book.
> Since you can't do math on a None object, any attempt to do so
> will raise an exception:
> 
>   >>> 42 + fact(-1)
 
Fair enough.
 
> 
> I generally prefer my functions to return semi-sensible results
> (in this case, None makes sense to me, as there isn't really a
> definition of "negative-one factorial").  It also fits in my head
> alongside my SQL where NULL values/expressions can be returned
> and evaluated without the whole query falling over.
 
Ok, but in SQL, 42 + fact(-1) wouldn't raise an exception, it
would simply return a NULL if fact(-1) returned None. I suppose
the only reason to not use None is for consistent behavior. If all
the functions from the gmpy library raise exceptions on error, I
think I would want mine to do the same.
 
> 
> I suppose if you really wanted to throw an exception using this
> lambda craziness, you could wrap the whole result in "0 +
> ([body])" which, if the body returned Null, would push up
> exception daisies (with slightly misleading exception information).
> 
> -tkc
 
 
 








************************************** See what's new at http://www.aol.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/28a6cfa2/attachment.html>

From besturk at gmail.com  Wed Oct 31 15:58:57 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 31 Oct 2007 12:58:57 -0700
Subject: 3 number and dot..
Message-ID: <1193860737.687984.13400@k79g2000hse.googlegroups.com>

Hi..
I want to do this:
for examle:
12332321 ==> 12.332.321

How can i do?



From paul.hankin at gmail.com  Thu Oct 18 07:57:10 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 18 Oct 2007 11:57:10 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <87myug3hhv.fsf@mulj.homelinux.net>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
	<87myug3hhv.fsf@mulj.homelinux.net>
Message-ID: <1192708630.322399.234790@t8g2000prg.googlegroups.com>

On Oct 18, 10:21 am, Hrvoje Niksic <hnik... at xemacs.org> wrote:
> Paul Hankin <paul.han... at gmail.com> writes:
> > On Oct 17, 10:03 pm, Debajit Adhikary <debaj... at gmail.com> wrote:
> >> How does "a.extend(b)" compare with "a += b" when it comes to
> >> performance? Does a + b create a completely new list that it assigns
> >> back to a? If so, a.extend(b) would seem to be faster. How could I
> >> verify things like these?
>
> > Use a += b rather than a.extend(b): I'm not sure what I was
> > thinking.
>
> Why?  a.extend(b) is at least as readable, and is guaranteed to extend
> the same list.  In general, "a += b" can fall back to the slower "a =
> a + b" for sequences that don't support +=.

Not to me: I can never remember which of a.append and a.extend is
which. Falling back to a = a + b is exactly what you want. For
instance:

a = (1, 2, 3)
a += (4, 5, 6)

works, whereas:

a = (1, 2, 3)
a.extend((4, 5, 6))

doesn't. So using += makes your code more general. There's no standard
sequence type that has extend and not +=, so worrying that += is
slower isn't a concern unless you're using a user-defined class. Even
then, it's probably a mistake that should be fixed in the class rather
than requiring .extend() to be used instead of +=.

--
Paul Hankin



From a.harrowell at gmail.com  Mon Oct 29 07:38:44 2007
From: a.harrowell at gmail.com (TYR)
Date: Mon, 29 Oct 2007 11:38:44 -0000
Subject: SQLite3; weird error
Message-ID: <1193657924.375787.287740@o80g2000hse.googlegroups.com>

Has anyone else experienced a weird SQLite3 problem?

Going by the documentation at docs.python.org, the syntax is as
follows:
foo = sqlite3.connect(dbname) creates a connection object representing
the state of dbname and assigns it to variable foo. If dbname doesn't
exist, a file of that name is created.

To do anything with it, you then need to create a cursor object by
calling foo's method cursor (bar = foo.cursor).

You can now pass an SQL query or command to the DB by calling the
cursor object's method execute() with the SQL query as a quoted
statement.

(bar.execute("SELECT FROM squid WHERE squamous=True")

And then do other stuff.

Fine. When I call the cursor object, though, I get an AttributeError;
('builtinfunction_or_method object has no attribute 'execute')

Am running Python 2.5.1 on Mandriva Linux '08.



From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 25 14:27:17 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 25 Oct 2007 18:27:17 -0000
Subject: Delete all not allowed characters..
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
Message-ID: <13i1o057f6gl285@corp.supernews.com>

On Thu, 25 Oct 2007 07:52:36 -0700, Abandoned wrote:

> Hi..
> I want to delete all now allowed characters in my text. I use this
> function:
> 
> def clear(s1=""):
>     if s1:
>         allowed =
> [u'+',u'0',u'1',u'2',u'3',u'4',u'5',u'6',u'7',u'8',u'9',u' ', u'?',
> u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', 'A',
> 'C', 'B', 'E', 'D', 'G', 'F', 'I', 'H', 'K', 'J', 'M', 'L', 'O', 'N',
> 'Q', 'P', 'S', 'R', 'U', 'T', 'W', 'V', 'Y', 'X', 'Z', 'a', 'c', 'b',
> 'e', 'd', 'g', 'f', 'i', 'h', 'k', 'j', 'm', 'l', 'o', 'n', 'q', 'p',
> 's', 'r', 'u', 't', 'w', 'v', 'y', 'x', 'z']
>         s1 = "".join(ch for ch in s1 if ch in allowed) return s1


You don't need to make allowed a list. Make it a string, it is easier to 
read.

allowed = u'+0123456789 ????????????' \
u'ACBEDGFIHKJMLONQPSRUTWVYXZacbedgfihkjmlonqpsrutwvyxz'


> ....And my problem this function replace the character to "" but i want
> to " "
> for example:
> input: Exam%^^ple
> output: Exam   ple


I think the most obvious way is this:

def clear(s):
    allowed = u'+0123456789 ????????????' \
    u'ACBEDGFIHKJMLONQPSRUTWVYXZacbedgfihkjmlonqpsrutwvyxz'
    L = []
    for ch in s:
        if ch in allowed: L.append(ch)
        else: L.append(" ")
    return ''.join(s)


Perhaps a better way is to use a translation table:

def clear(s):
    allowed = u'+0123456789 ????????????' \
    u'ACBEDGFIHKJMLONQPSRUTWVYXZacbedgfihkjmlonqpsrutwvyxz'
    not_allowed = [i for i in range(0x110000) if unichr(i) not in allowed]
    table = dict(zip(not_allowed, u" "*len(not_allowed)))
    return s.translate(table)

Even better is to pre-calculate the translation table, so it is 
calculated only when needed:

TABLE = None
def build_table():
    global TABLE
    if TABLE is None:
        allowed = u'+0123456789 ????????????' \
        u'ACBEDGFIHKJMLONQPSRUTWVYXZacbedgfihkjmlonqpsrutwvyxz'
        not_allowed = \
        [i for i in range(0x110000) if unichr(i) not in allowed]
        TABLE = dict(zip(not_allowed, u" "*len(not_allowed)))
    return TABLE

def clear(s):
    return s.translate(build_table())


The first time you call clear(), it will take a second or so to build the 
translation table, but then it will be very fast.



-- 
Steven.


From dokondr at gmail.com  Fri Oct 19 09:44:56 2007
From: dokondr at gmail.com (Dmitri O.Kondratiev)
Date: Fri, 19 Oct 2007 17:44:56 +0400
Subject: Millisecond timestamp function?
Message-ID: <53396d9e0710190644t345d5935q9aa2e10498565965@mail.gmail.com>

What Python module / function can be used to get millisecond timestamps?
time.time() returns the time as a floating point number expressed in seconds
since the epoch, in UTC.

Thanks!
-- 
Dmitri O. Kondratiev
dokondr at gmail.com
http://www.geocities.com/dkondr
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071019/ac9dd6a7/attachment.html>

From zachREMOVE at MEin.tu-clausthal.de  Mon Oct  1 05:33:55 2007
From: zachREMOVE at MEin.tu-clausthal.de (Gabriel Zachmann)
Date: Mon, 01 Oct 2007 11:33:55 +0200
Subject: Bug with lists of pairs of lists and append()
In-Reply-To: <1191020974.172493.127040@w3g2000hsg.googlegroups.com>
References: <slrnffqvr6.uut.zach@zaphome.in.tu-clausthal.de>
	<1191020974.172493.127040@w3g2000hsg.googlegroups.com>
Message-ID: <fdqetr$jbd$1@ariadne.rz.tu-clausthal.de>

> I'm using list(l) to copy the list, Tero uses l[:], but the idea is
> the same.
> 

Thanks a lot for your response and the hint.

> But do you just want all proper partitions of lst? Then this is much
> simpler:
> lst = [0, 1, 2]
> s = [(lst[:i], lst[i:]) for i in range(1, len(lst))]


Ah, thanks a lot for that nice line of code!
Python keeps astonishing me ;-)

Cheers,
Gabriel.

-- 
______________________________________________________________
Life is so constructed that the event does not, cannot,
will not match the expectation.             (Charlotte Bronte)
______________________________________________________________
  zach in.tu-clausthal.de      __@/'    www.gabrielzachmann.org
______________________________________________________________


From nytrokiss at gmail.com  Sun Oct  7 06:26:34 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Sun, 7 Oct 2007 06:26:34 -0400
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191749636.791505.3740@w3g2000hsg.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1191677381.068666.65870@k79g2000hse.googlegroups.com>
	<4707be3e$0$26696$426a74cc@news.free.fr>
	<1191738947.789865.33700@19g2000hsx.googlegroups.com>
	<1191749636.791505.3740@w3g2000hsg.googlegroups.com>
Message-ID: <8a6b8e350710070326u10a4e1c1n3df47a382aca6a0c@mail.gmail.com>

But the question is when will the cheap hosting company's start to host
normal python files!

On 10/7/07, genro <giovanni.porcari at gmail.com> wrote:
>
> On Oct 7, 8:35 am, Michele Simionato <michele.simion... at gmail.com>
> wrote:
> > On Oct 6, 12:57 pm, Bruno Desthuilliers
> >
> > > Michele Simionato a ?crit :
> >
> > > > I looked at the source code and it seems fine to me, but I have
> > > > not used it directly, not stressed it. I need a
> > > > production-level WSGI session middleware and I wonder what the
> > > > players are (for instance how Beaker does compare with flup?)
> >
> > > Can't tell, but I'd trust the Pylons team on this kind of choices.
> > > They're doing good job so far AFAICT.
> >
> > Probably Beaker works well, but it is certainly NOT doing things
> > as Eby recommends:
> >
> > http://dirtsimple.org/2007/02/wsgi-middleware-considered-harmful.html
> >
> > BTW, I know that Eby is asking opinions about WSGI 2.0 on the
> > WSGI SIG and interested people may have a look there.
> >
> >            Michele Simionato
>
>
> I think that Beaker is a Mako dependency.
> So if you use Mako, Beaker is not an option  :)
>
> G
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
http://www.goldwatches.com/mens/cufflinks.html
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/de3581f0/attachment.html>

From besturk at gmail.com  Thu Oct 25 10:52:36 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 25 Oct 2007 07:52:36 -0700
Subject: Delete all not allowed characters..
Message-ID: <1193323956.095828.265100@57g2000hsv.googlegroups.com>

Hi..
I want to delete all now allowed characters in my text.
I use this function:

def clear(s1=""):
    if s1:
        allowed =
[u'+',u'0',u'1',u'2',u'3',u'4',u'5',u'6',u'7',u'8',u'9',u' ', u'?',
u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', 'A',
'C', 'B', 'E', 'D', 'G', 'F', 'I', 'H', 'K', 'J', 'M', 'L', 'O', 'N',
'Q', 'P', 'S', 'R', 'U', 'T', 'W', 'V', 'Y', 'X', 'Z', 'a', 'c', 'b',
'e', 'd', 'g', 'f', 'i', 'h', 'k', 'j', 'm', 'l', 'o', 'n', 'q', 'p',
's', 'r', 'u', 't', 'w', 'v', 'y', 'x', 'z']
        s1 = "".join(ch for ch in s1 if ch in allowed)
        return s1

....And my problem this function replace the character to "" but i
want to " "
for example:
input: Exam%^^ple
output: Exam   ple
I want to this output but in my code output "Example"
How can i do quickly because the text is very long..



From amjadcsu at gmail.com  Tue Oct 30 16:57:30 2007
From: amjadcsu at gmail.com (amjadcsu at gmail.com)
Date: Tue, 30 Oct 2007 13:57:30 -0700
Subject: Arp request to get MAc Adress  with IP address
Message-ID: <1193777850.795407.233750@i38g2000prf.googlegroups.com>

Hello,
I have a network on same subnet. I have an ip address of a machine.
but i need to get its MAC Adress.
Sendingf ARP request is the way i am taking.

IS there any other way to get this MAC Adress in python.??

Also does python go down to level 2 of TCP/IP model??


Sorry if i am to naive. Just learning python

thanks



From gagsl-py2 at yahoo.com.ar  Sun Oct 21 13:02:23 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 21 Oct 2007 14:02:23 -0300
Subject: Problem Converting Word to UTF8 Text File
References: <1192984543.240902.3790@t8g2000prg.googlegroups.com>
Message-ID: <op.t0j399kvx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 21 Oct 2007 13:35:43 -0300, <patrick.waldo at gmail.com> escribi?:

> Hi all,
>
> I'm trying to copy a bunch of microsoft word documents that have
> unicode characters into utf-8 text files.  Everything works fine at
> the beginning.  The word documents get converted and new utf-8 text
> files with the same name get created.  And then I try to copy the data
> and I keep on getting "TypeError: coercing to Unicode: need string or
> buffer, instance found".  I'm probably copying the word document
> wrong.  What can I do?

Always remember to provide the full traceback.
Where do you get the error? In the last line: shutil.copyfile?
If the file already contains the text in utf-8, and you just want to make  
a copy, use shutil.copy as before.
(or, why not tell Word to save the file using the .txt extension in the  
first place?)

> for doc in glob.glob(input):
>     txt_split = os.path.splitext(doc)
>     txt_doc = txt_split[0] + '.txt'
>     txt_doc = codecs.open(txt_doc,'w','utf-8')
>     shutil.copyfile(doc,txt_doc)

copyfile expects path names as arguments, not a  
codecs-wrapped-file-like-object

-- 
Gabriel Genellina



From none at try.invalid  Thu Oct 25 11:58:58 2007
From: none at try.invalid (Pete Bartonly)
Date: Thu, 25 Oct 2007 16:58:58 +0100
Subject: local variable referenced before assignment
In-Reply-To: <ffpn0n$gb8$02$1@news.t-online.com>
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
	<ffpn0n$gb8$02$1@news.t-online.com>
Message-ID: <4720BD42.5000104@try.invalid>

Peter Otten wrote:
> Pete Bartonly wrote:
> 
>> Quick question, probably quite a simple matter. Take the follow start of 
>> a method:
>>
>>
>> def review(filesNeedingReview):
>>
>>      for item in filesNeedingReview:
>>          (tightestOwner, logMsg) = item
>>
>>          if (logMsg != None):
>>              for logInfo in logMsg.changed_paths:
>>
>>
>> This generates the error:
>>
>>    UnboundLocalError: local variable 'logMsg' referenced before assignment
>>
>> I thought I'd assigned it in the "(tightestOwner, logMsg) = item" line - 
>> so in the python interpreter complaining about the fact this assignment 
>> might not go well?
> 
> My crystal ball tells me that you are not posting the actual code where
> for... and if... are indented to the same level. 

I am! See my other reply just now.

Here it the code again, directly cut and pasted from emacs:

     for item in filesNeedingReview:
         (tightestOwner, logMsg) = item

         if (logMsg != None):
             for logInfo in logMsg.changed_paths:
                 if (not tightestOwner in emailListForReviewers):
                     emailListForReviewers.append(tightestOwner)




This triggers the error
> when review() is called with an empty sequence.
> 
> Please remember to copy and paste both code and traceback next time.

Sorry 'bout that. The traceback I forgot is:

Traceback (most recent call last):
   File "checkCode.py", line 599, in ?
     analyseFiles(tempDir)
   File "checkCode.py", line 445, in analyseFiles
     analyseFilesInARepos(startDir, f)
   File "checkCode.py", line 587, in analyseFilesInARepos
     makeReport(projName, filesNeedingReview, filesFailedReview)
   File "checkCode.py", line 419, in makeReport
     for logInfo in logMsg.changed_paths:
UnboundLocalError: local variable 'logMsg' referenced before assignment


Pete


From see_website at mindprod.com.invalid  Mon Oct  1 23:38:08 2007
From: see_website at mindprod.com.invalid (Roedy Green)
Date: Tue, 02 Oct 2007 03:38:08 GMT
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
Message-ID: <f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>

On Fri, 28 Sep 2007 18:27:04 -0500, Damien Kick <dkixk at earthlink.net>
wrote, quoted or indirectly quoted someone who said :

>"free as in beer". 
 
but does not "free beer" nearly always come with a catch or implied
obligation?
-- 
Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com


From lars at larsjohansen.org  Tue Oct 16 04:00:13 2007
From: lars at larsjohansen.org (Lars Johansen)
Date: Tue, 16 Oct 2007 10:00:13 +0200
Subject: Good Book
Message-ID: <1192521613.19231.1.camel@lars-laptop.ez.no>

HI are there any recommended books for an sysadmin who has been mostly
writing shell scripts, but want to move up to create more complex
programs.





From akraemer at sbcglobal.net  Thu Oct 18 19:52:27 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Thu, 18 Oct 2007 23:52:27 -0000
Subject: Need scrip to reed rss feeds
In-Reply-To: <1192750786.466914.109080@v23g2000prn.googlegroups.com>
References: <1192750786.466914.109080@v23g2000prn.googlegroups.com>
Message-ID: <1192751547.867978.263840@y27g2000pre.googlegroups.com>

On Oct 18, 4:39 pm, "tedpot... at gmail.com" <tedpot... at gmail.com> wrote:
> Hi,
> Does any one know whare I can find some code to phrase a rss feeds?
> Thank you,
> Ted

Try http://feedparser.org/



From gnewsg at gmail.com  Wed Oct 24 19:02:05 2007
From: gnewsg at gmail.com (Giampaolo Rodola')
Date: Wed, 24 Oct 2007 16:02:05 -0700
Subject: Adding idle timeout capabilities to asyncore
In-Reply-To: <mailman.381.1193157052.13605.python-list@python.org>
References: <1193153659.869282.34310@v23g2000prn.googlegroups.com>
	<mailman.381.1193157052.13605.python-list@python.org>
Message-ID: <1193266925.085376.8030@v23g2000prn.googlegroups.com>

On 23 Ott, 17:34, Josiah Carlson <josiah.carl... at gmail.com> wrote:
> On 22 Ott, 12:28, Giampaolo Rodola' <gne... at gmail.com> wrote:
>
>
>
>
>
> > Hi there.
> > We're talking about an asyncore-based server.
> > Just for the heck of it I'd like to set a timeout which will
> > disconnects the clients if they're inactive (i.e., no command or data
> > transfer in progress) for a long period of time.
> > I was thinking about putting the timeout value into an attribute:
>
> > def settimeout(self, secs):
> >      self.timeout = time.time() + secs
>
> > And then have the readable method call time.time() at every loop to
> > check if time has passed or not:
>
> > def readable(self):
> >     if time.time() >= self.timeout:
> >         self.send("Timeout")
> >         self.close()
> >     return 1
>
> > My only concern is if it's a good idea calling time.time() so often.
> > Since A LOT of clients could be connected simultaneously, couldn't it
> > be a too much resource-intensive operation?
> > I'd also be curious to know how Twisted implemented this kind of
> > stuff.
> > By calling time.time() at every loop?
>
> > Thanks in advance.
>
> Calling time.time() is relatively inexpensive in comparison to pure
> Python function calls, but indeed, it could be a bottleneck.
>
> I don't know what Twisted does, but what I would do is to add two
> variables to each instance of the class you want to add timeouts to;
> self.timeout and self.lastdata .  self.lastdata would hold the time
> for the last time you sent or received data on the socket, and
> self.timeout would hold the delay between when you last sent/received
> data and when it should be closed due to idle timeout.
>
> Now, since you are smart, you don't need to alter your handle_send()
> or handle_receive() methods in your asyncore subclass.  Instead, you
> rewrite asyncore.poll() to update .lastdata for every socket that is
> in either the reader or writer list, which will result in one
> time.time() call.  Further, to check for timeouts, you only ever need
> to check those sockets that are *not* in the readable or writable
> lists...
>
> To be precise, add the following block to your own copy of
> asyncore.poll just after the 'for fd in e:' block...
>
>         #handle timeouts
>         rw = set(r) + set(w)
>         now = time.time()
>         for f in (i for i in rw if i in map):
>             map[f].lastdata = now
>         for j in (map[i] for i in map if i not in rw):
>             if j.timeout+j.lastdata > now:
>                 #timeout!
>                 j.handle_close()
>
> You ARE going to need to initialize .timeout and .lastdata members for
> every instance, but that shouldn't be so bad (for a socket that
> doesn't time out, I would actually suggest a 1 hour or 1 day timeout).
>
>  - Josiah- Nascondi testo tra virgolette -
>
> - Mostra testo tra virgolette -

A really nice hack.
Thank you a lot, Josiah.



From byte8bits at gmail.com  Sun Oct 14 10:48:26 2007
From: byte8bits at gmail.com (byte8bits at gmail.com)
Date: Sun, 14 Oct 2007 14:48:26 -0000
Subject: Entering username & password automatically using urllib.urlopen
In-Reply-To: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
References: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
Message-ID: <1192373306.124574.259480@y27g2000pre.googlegroups.com>

On Oct 13, 11:41 pm, rodrigo <rodrigo... at gmail.com> wrote:
> I am trying to retrieve a password protected page using:
>
> get = urllib.urlopen('http://password.protected.url"').read()
>
> While doing this interactively, I'm asked for  the username, then the
> password at the terminal.
> Is there any way to do this non-interactively? To hardcode the user/
> pass into the script so I can get the page automatically?
>
> (This is not a cracking attempt, I am trying to retrieve a page I have
> legitimate access to, just doing it automatically when certain
> conditions are met.)
>
> Thanks,
>
> Rodrigo

The pexpect module works nicely for automating tasks that normally
require user interaction.



From python.list at tim.thechases.com  Mon Oct  1 10:12:57 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 01 Oct 2007 09:12:57 -0500
Subject: Select as dictionary...
In-Reply-To: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
Message-ID: <47010069.7000904@tim.thechases.com>

> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> print links
> 
> and result
> [(1, 5), (2,5).......] (2 million result)
> 
> I want to see this result directly as a dictionary:
> 
> {1: 5, 2: 5 .....}

Because your fortuitously issued a select in that particular 
order (key, value), you can simply use:

  my_dict = dict(aia.fetchall())

Alternatively, if you don't want to consume double-ish the 
memory, you can do something like

   my_dict = {}
   while True:
     rows = aia.fetchmany()
     if not rows: break
     my_dict.update(dict(rows))

This should at least prevent both a 2-million-item list returned 
by fetchall() *and* the 2-million-item dict; leaving you instead 
with a footprint of a 2-million-item-dict, plus however many rows 
your fetchmany() brings back by default (or you can specify it as 
a optional parameter to fetchmany--see your help for fetchmany).

2 million results are a lot, no matter how big each element 
is...beware of memory limits.

-tkc




From deets at nospam.web.de  Wed Oct 31 07:14:08 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 31 Oct 2007 12:14:08 +0100
Subject: Python and SQLite release cycles
References: <1193816546.161429.306130@v3g2000hsg.googlegroups.com>
Message-ID: <5or6c1Fobod0U1@mid.uni-berlin.de>

mikhail.savitsky at gmail.com wrote:

> Hi,
> 
> Official Python distro is very stable, with release cycle of around 1
> year. However, to include the new version of SQLite, which has a much
> shorter release cycle, one has to rebuild the main Python distribution
> (to compile with the new SQLite headers) - this is from Python docs.
> Therefore, inclusion of PySQLite in Python-2.5.1 distro effectively
> shrinks the Python release cycle to that of SQLite. I would not have
> minded, except that we have many workstations and pretty arcane
> deployment procedure, making frequent redeployment of Python quite
> painful.
> Has anyone considered this problem and maybe a work-around?

I think you misrepresent horse and rider here: python release cycles are
independent of SQLites. I'm pretty sure they might contain new versions if
these are API-compatible (remember, python's shipped SQLite won't be
allowed to break existing stuff).

In all cases, you can decouple them easily (the same way with element-tree):
just install sqlite explicitly as a module. It's under a different name
(not sure which right out of my head), so they don't conflict.

Diez


From bbound at gmail.com  Fri Oct 12 19:39:37 2007
From: bbound at gmail.com (bbound at gmail.com)
Date: Fri, 12 Oct 2007 23:39:37 -0000
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <CLwPi.2348$Yb2.747@newsfe12.lga>
References: <87tzt3ihev.fsf@kobe.laptop>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
	<1191978311.987341.271000@r29g2000hsg.googlegroups.com>
	<CLwPi.2348$Yb2.747@newsfe12.lga>
Message-ID: <1192232377.453463.155140@i38g2000prf.googlegroups.com>

On Oct 11, 5:40 pm, "John W. Kennedy" <jwke... at attglobal.net> wrote:
> nebulou... at gmail.com wrote:
> > Do not bluntly contradict me in public.
>
> [insult deleted]
>
> [death threat deleted]

Insults and other such falsehoods will be deleted rather than repeated
and death threats will be reported to your internet service provider;
this is a public service provided by me for free.

Have a nice day. :)



From michele.simionato at gmail.com  Mon Oct  8 00:47:26 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Mon, 08 Oct 2007 04:47:26 -0000
Subject: Problem of Readability of Python
In-Reply-To: <1i5mh1z.7kw0621m8tpmpN%aleax@mac.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
	<13giput3mhtvb6c@corp.supernews.com>
	<1i5mh1z.7kw0621m8tpmpN%aleax@mac.com>
Message-ID: <1191818846.251931.278960@o80g2000hse.googlegroups.com>

On Oct 7, 7:58 pm, al... at mac.com (Alex Martelli) wrote:
> If you REALLY pine for Pascal's records, you might choose to inherit
> from ctypes.Structure, which has the additional "advantages" of
> specifying a C type for each field and (a real advantage;-) creating an
> appropriate __init__ method.
>
> >>> import ctypes
> >>> class Record(ctypes.Structure):
>
> ...  _fields_ =
> (('x',ctypes.c_float),('y',ctypes.c_float),('z',ctypes.c_float)
> )
> ...>>> r=Record()
> >>> r.x
> 0.0
> >>> r=Record(1,2,3)
> >>> r.x
> 1.0
> >>> r=Record('zip','zop','zap')
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> TypeError:  float expected instead of str instance
>
> See?  You get type-checking too -- Pascal looms closer and closer!-)
>
> And if you need an array of 1000 such Records, just use as the type
> Record*1000 -- think of the savings in memory (no indirectness, no
> overallocations as lists may have...).

That's very cool Alex! I have just a question: suppose I want
to measure the memory allocation of a million of records made
with ctypes vs the memory allocation of equivalent
records made with __slots__, how do I measure it? Say on Linux,
Mac and Windows?
If ctypes records are more efficient than __slots__ records,
I will ask for deprecation of __slots__ (which is something
I wanted from the beginning!).


   Michele Simionato



From bdesth.quelquechose at free.quelquepart.fr  Sat Oct  6 04:25:08 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 06 Oct 2007 10:25:08 +0200
Subject: Static variable vs Class variable
In-Reply-To: <470bdd7b$0$15784$426a74cc@news.free.fr>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n244rFf0dahU2@mid.uni-berlin.de>
	<470bdd7b$0$15784$426a74cc@news.free.fr>
Message-ID: <470bf00d$0$24150$426a74cc@news.free.fr>

Bruno Desthuilliers a ?crit :
(snip)
> And it is *not* rebound:

Doh. Stupid me. Of course it is - but to a ref to the same object...

  >>> class A:
...     l = []
...
>>> class B(A): pass
...
>>> B.__dict__
{'__module__': '__main__', '__doc__': None}
>>> B.l
[]
>>> B.l += [1]
>>> B.__dict__
{'__module__': '__main__', '__doc__': None, 'l': [1]}
>>>

Thanks Diez for pointing this out. And as far as I'm concerned: time to 
bed :(


From khemkaamit at gmail.com  Thu Oct 18 07:54:08 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Thu, 18 Oct 2007 17:24:08 +0530
Subject: Order by value in dictionary
In-Reply-To: <1192633790.090464.306800@t8g2000prg.googlegroups.com>
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de> <5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
	<5nmk3kFiv0krU2@mid.uni-berlin.de>
	<1192633790.090464.306800@t8g2000prg.googlegroups.com>
Message-ID: <1360b7230710180454w4f79c98br4d4aa2b783e3043b@mail.gmail.com>

On 10/17/07, Abandoned <besturk at gmail.com> wrote:
> Very very thanks everbody..
>
> These are some method..
> Now the fastest method is second..
>
> ==== 1 ===
> def sortt(d):
>     items=d.items()
>     backitems=[ [v[1],v[0]] for v in items]
>     backitems.sort()
>     #boyut=len(backitems)
>     #backitems=backitems[boyut-500:]
>     a=[ backitems[i][1] for i in range(0,len(backitems))]
>     a.reverse()
>     return a
>
> ==== 2 =====
> import operator
> def sortt(d):
>     backitems=d.items()
>     boyut=len(backitems)
>     backitems=backitems[boyut-500:]
>     backitems=sorted(backitems, key=operator.itemgetter(1))
>     a=[ backitems[i][0] for i in range(0,len(backitems))]
>     a.reverse()
>     return a
>
> ==== 3 =====
> def sortt(d):
>     backitems=d.items()
>     backitems.sort(lambda x,y:cmp(x[1],y[1]))
>     backitems=sorted(backitems, key=operator.itemgetter(1))
>     a=[ backitems[i][0] for i in range(0,len(backitems))]
>     a.reverse()
>     return a
>
> ====== 4 =======
> import heapq
>
> def sortt(d):
>     backitems=d.items()
>     backitems=heapq.nlargest(1000, backitems, operator.itemgetter(1))
>     a=[ backitems[i][0] for i in range(0,len(backitems))]
>     a.reverse()
>     return a
>

Btw, there are specialized algorithms called "Selection Algorithms"
for finding k largest items in a collection.

http://en.wikipedia.org/wiki/Selection_algorithm

Cheers,
-- 
--
Amit Khemka


From ldo at geek-central.gen.new_zealand  Thu Oct  4 04:55:27 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 21:55:27 +1300
Subject: A question about subprocess
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
	<4704a187$1$18927$4c368faf@roadrunner.com>
Message-ID: <fe29pv$28l$3@lust.ihug.co.nz>

In message <4704a187$1$18927$4c368faf at roadrunner.com>, Carl Banks wrote:

> On Wed, 03 Oct 2007 16:46:20 +0000, JD wrote:
>> 
>> I want send my jobs over a whole bunch of machines (using ssh). The jobs
>> will need to be run in the following pattern:
>> 
>> (Machine A)   (Machine B)  (Machine C)
>> 
>> Job A1             Job B1            Job C1
>> 
>>  Job A2           Job B2            etc
>> 
>>  Job A3          etc
>> 
>>  etc
>> 
>> Jobs runing on machine A, B, C should be in parallel, however, for each
>> machine, jobs should run one after another.
>> 
>> How can I do it with the subprocess?
> 
> 
> It's not too hard if the remote jobs exit gracefully, so that ssh knows
> when the remote job is done.

It's hard to see how an _ungraceful_ exit could stop SSH from knowing when
the remote job is done.


From silfheed at gmail.com  Fri Oct  5 16:04:29 2007
From: silfheed at gmail.com (Silfheed)
Date: Fri, 05 Oct 2007 20:04:29 -0000
Subject: PYTHONPATH, opensuse10.2, gtk not working
In-Reply-To: <1191555060.248671.298340@50g2000hsm.googlegroups.com>
References: <1191536138.690185.59080@22g2000hsm.googlegroups.com>
	<mailman.1551.1191551988.2658.python-list@python.org>
	<1191555060.248671.298340@50g2000hsm.googlegroups.com>
Message-ID: <1191614669.313525.292300@w3g2000hsg.googlegroups.com>

On Oct 4, 8:31 pm, Silfheed <silfh... at gmail.com> wrote:
> On Oct 4, 7:39 pm, Steve Holden <st... at holdenweb.com> wrote:
>
>
>
> > Silfheed wrote:
> > > Heyas
>
> > > So I'm trying to do two things, install a little gnome taskbar applet
> > > (timer-applet) that was written in python and experiment with writing
> > > python gtk apps.  I've installed (through yast) gtk, gtk2, gtk2-devel,
> > > python-gtk, python-gtk-devl, python-gtk-doc but I still cant get
> > > python to import gtk.  I set PYTHONPATH = /usr/lib/python2.5/site-
> > > packages/ and that got importing pygtk to work, but the little app I
> > > downloaded wants to import gtk and I just cant figure out what I'm
> > > supposed to set PYTHONPATH to in order to get `import gtk` to work.
> > > Anyone know what I'm doing wrong or missing?
>
> > > Thanks
>
> > set PYTHONPATH to /usr/lib/python2.5/lib/site-packages:gtk-root-dir
>
> > By the way, do you really think that it's necessary to put site-packages
> > on the path? You might find it's already on there as Python starts up.
>
> > You can tell by printing sys.path from Python.
>
> Yes, it actually requires adding the site-packages to the PYTHONPATH
> to get pygtk to work.  So far I've managed to get gtk to give a
> different error when I added the site-packages/gtk-2.0/ directory (the
> only gtk-like thing in the site-packages) to the PYTHONPATH
> `ImportError: gobject/_gobject.so: undefined symbol:
> PyUnicodeUCS4_FromObject`.   I'll have to check the path when I get
> home to see what it actually has within it and work from there.
>
> Thanks.

So after checking sys.path and snooping around a bit more, it turns
out that I have two python site-package directories... one in /usr/lib
and one in /usr/local/lib.. One is automatically stuck into sys.path
(but allowed root access only) while the other is not.

I dunno why this is, but is there a way to get python to see both of
these automatically (without PYTHONPATH?)  Not that this solves my
problem since after changing the permissions to world readable on the
sys.path listed /usr/lib/python2.5/site-packages, it still wont let me
import gtk.  This is all after installing everything with yast (which
says that I have gtk)..



From aaron.watters at gmail.com  Tue Oct  9 16:32:26 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Tue, 09 Oct 2007 20:32:26 -0000
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191958556.735855.199180@22g2000hsm.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<1191958556.735855.199180@22g2000hsm.googlegroups.com>
Message-ID: <1191961946.278597.91810@k79g2000hse.googlegroups.com>

On Oct 9, 3:35 pm, Istvan Albert <istvan.alb... at gmail.com> wrote:
>
> why would it be late? is the future of you own work not worth the time
> it takes to rename it? Compared to all the other work it took ... it
> is just a mere inconvenience.

>From a sourceforge perspective I think it's more than in
inconvenience -- in fact I'm not sure it can be done --
unless I get on the phone with the guys over there and
beg for some special exception or something.  [btw, I like
using sourceforge: lot's of neat packaged services; no real
complaints.] The approved http://nucular.sourceforge.net and
I don't think they'll approve another project with the
same description.

> ....people who invent a name will have a hard time accepting
> that it is bad.

Well I'd like people to use the software because they think
it's good.  If the name is a problem it's probably only the
first of many reasons they won't want to use it or will not
like it because it doesn't match their preconceptions.  But
if there's some way to change the name easily in the next
week or so, I'll consider it anyway.  hints?

  -- Aaron Watters

===
Why do you hang out with that sadist?
Beats me!  -- Kliban



From bj_666 at gmx.net  Mon Oct 22 02:20:20 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 06:20:20 GMT
Subject: Wrapping stdout in a codec
References: <1193020877.138550.53890@z24g2000prh.googlegroups.com>
Message-ID: <5o2tp4FktnthU1@mid.uni-berlin.de>

On Mon, 22 Oct 2007 02:41:17 +0000, JKPeck wrote:

> We want to wrap the stdout device in a codec in order to decode output
> transparently according to a particular code page (which might not be
> the system code page).  However, codec.open requires a filename, and
> stdout may be a tty or otherwise anonymous.  How can we accomplish
> this wrapping?

The `codecs` module has more than just the `codecs.open()` function.  Try
something like this::

  sys.stdout = codecs.getwriter('utf-8')(sys.stdout)

Ciao,
	Marc 'BlackJack' Rintsch


From nospam at nospam.fr  Mon Oct  1 08:05:16 2007
From: nospam at nospam.fr (jean-michel bain-cornu)
Date: Mon, 01 Oct 2007 14:05:16 +0200
Subject: Mysqldb & stderr
In-Reply-To: <1190898760.854246.51690@n39g2000hsh.googlegroups.com>
References: <1190898760.854246.51690@n39g2000hsh.googlegroups.com>
Message-ID: <4700e297$0$25936$ba4acef3@news.orange.fr>

Hi,
> developing a daemon (using python 2.4 and mysqldb 1.2.1_p2) we notes
> that mysqldb class write on stderr some warnings and error
> asyncronously (uhmmm.... it's good written? ;P ).
> 
> Someone knows how stop write on stderr (and stdout) on mysqldb?

I use warnings filter :
	...
	import warnings
	warnings.filterwarnings('ignore')
	import MySQLdb
	...
May be it can be helpful to you.
Regards,
jm


From mccredie at gmail.com  Fri Oct 19 20:26:22 2007
From: mccredie at gmail.com (Matimus)
Date: Sat, 20 Oct 2007 00:26:22 -0000
Subject: __main__ : What is this?
In-Reply-To: <mailman.234.1192836549.13605.python-list@python.org>
References: <mailman.234.1192836549.13605.python-list@python.org>
Message-ID: <1192839982.488484.102860@e34g2000pro.googlegroups.com>

> I've read various portions of the Python 2.5 documentation in an
> attempt to figure out exactly what the following condition represents:
>
> if __name__ == "__main__":
>     main()
>
> However, I was not able to determine what it is actually checking for.
> Could someone point me in the way of a tutorial or explain this for
> me? Thanks.

__name__ is an attribute on a module that shows the standard name for
that module:

>>> import sys
>>> sys.__name__
'sys'

The name stays constant even if you do something funny during import:

>>> import os as something_else
>>> something_else.__name__
'os'

When using the interpreter or running a python script code will be
executed in a standard module called "__main__".

>>> __name__
'__main__'

In fact, you can even import __main__ if you want:

>>> import __main__
>>> __main__.__name__
'__main__'
>>> a = 100
>>> __main__.a
100

The common pattern:

if __name__ == "__main__":
  # do stuff

IMHO better written:

if "__main__" == __name__:
    # do stuff

Allows a module to selectively run code only if it is being run as a
program. That code will not run if it is imported as a module, because
in that condition __name__ will return the name of the file (sans .py)
that the code is in. I've never tried naming a file __main__.py and
importing it, my guess is that you shouldn't do that :).

Matt



From james.abley at gmail.com  Sat Oct 13 16:32:13 2007
From: james.abley at gmail.com (James Abley)
Date: Sat, 13 Oct 2007 13:32:13 -0700 (PDT)
Subject: unicodedata implementation - categories
Message-ID: <13193027.post@talk.nabble.com>


Hi,

I'm trying to understand how CPython implements unicodedata, with a view to
providing an implementation for Jython. This is a background, low priority
thing for me, since I last posted to this list about it in February!

Python 2.5.1 (r251:54863, May  2 2007, 16:56:35)
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import unicodedata
>>> c = unichr(0x10FFFF)
>>> unicodedata.name(c)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: no such name
>>> unicodedata.category(unichr(0x10FFFF))
'Cn'

0x10FFFF is not a valid codepoint in Unicode 4.1, which is the version of
the Unicode standard that Python 2.5 supports.

So I have a couple of questions:

1) Why doesn't the category method raise an Exception, like the name method
does?
2) Given that the category method doesn't currently raise an Exception,
please could someone explain how the category is calculated? I have tried to
figure it out based on the CPython code, but I have thus far failed, and I
would also prefer to have it explicitly defined, rather than mandating that
a Jython (.NET, etc) implementation uses the same (possibly non-optimal for
Java) data structures and algorithms. 

My background is Mathematics rather than pure Computer Science, so doubtless
I still have some gaps in my education to be filled when it comes to data
structures and algorithms and I would welcome the opportunity to fill some
of those in. References to Knuth or some on-line reading would be much
appreciated, to help me understand the CPython part.

Cheers,

James
-- 
View this message in context: http://www.nabble.com/unicodedata-implementation---categories-tf4619497.html#a13193027
Sent from the Python - python-list mailing list archive at Nabble.com.



From steve at REMOVE-THIS-cybersource.com.au  Thu Oct  4 19:20:15 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 04 Oct 2007 23:20:15 -0000
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191305235.844686.126460@g4g2000hsf.googlegroups.com>
Message-ID: <13gat9f5dfml6d8@corp.supernews.com>

On Tue, 02 Oct 2007 06:07:15 +0000, Rhamphoryncus wrote:

> On Sep 30, 7:35 pm, andresj <andres.j.... at gmail.com> wrote:
>> I was doing some programming in Python, and the idea came to my mind:
>> using fractions instead of floats when doing 2/5.
> 
> The core problem with rationals (other than the inability to handle
> irrationals) 

If that's a problem, it is one shared by ints and floats.


> is their tendency to require more and more memory as
> calculations progress.  This means they get mysteriously slower and
> slower.
> 
> http://mail.python.org/pipermail/python-list/2002-October/166630.html

I've read that thread, and although I see the claim made that rationals 
are slow, I don't see the claim that they get "mysteriously" slower as 
calculations progress. (And if they did, it would hardly be a mystery if 
we know it is because they use more memory.)

I guess that could occur with unlimited precision rationals, in the same 
way that it could occur with ever-larger longints, but I don't see how it 
could occur with a simpler, limited precision implementation.



-- 
Steven.


From paul.nospam at rudin.co.uk  Mon Oct 22 14:35:56 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Mon, 22 Oct 2007 19:35:56 +0100
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
Message-ID: <87bqarov3n.fsf@rudin.co.uk>

"mensanator at aol.com" <mensanator at aol.com> writes:

> On Oct 22, 7:50 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
>> Py-Fun <lorna.bu... at gmail.com> wrote:
>> > I'm stuck trying to write a function that generates a factorial of a
>> > number using iteration and not recursion.  Any simple ideas would be
>> > appreciated.
>>
>> This version avoids doing anything fancier than adding 1, so it should be
>> simple enough for anyone:
>>
>> def factorial(e):
>>     a = 1
>>     for b in range(e):
>>         c = 0
>>         for j in range(b, -1, -1):
>>             for d in range(a):
>>                 c += 1
>>         a = c
>>     return a
>
> Not simple enough for my taste:
>
>>>> import gmpy
>>>> gmpy.fac(10)
> mpz(3628800)

I haven't followed all this thread, but has anyone yet done:

import operator
def fact(x):
    return reduce(operator.mul, xrange(1,x))


From arkanes at gmail.com  Mon Oct 22 13:26:01 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 22 Oct 2007 12:26:01 -0500
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
Message-ID: <4866bea60710221026g735e3d4bm4644e85e0bcde8a3@mail.gmail.com>

On 10/22/07, Sunburned Surveyor <sunburned.surveyor at gmail.com> wrote:
> I was thinking of a way I could make writing Python Class Files a
> little less painful. I was considering a Ptyhon script that read a
> file with a list of property names and method names and then generated
> a skeleton class file.
>
> I was even thinking of automatically generating the shell for doc
> strings and epydoc tags.
>
> Is there existing scripts that do something like this? If not, I will
> try to come up with something. If I'm sucessful I'll release the code
> under the GPL and will report back to the list.
>
> However, I thought I would check here first so that I don't reinvent
> the wheel.
>
> Thanks,
>
> Scott Huey
>

I can't think of a single reason why you would ever want to do this,
since your "list of method and property names" would be just as
verbose as just typing the actual python code.

Auto generated documentation stubs are considered harmful because they
take the place of real documentation.


From ldo at geek-central.gen.new_zealand  Fri Oct  5 00:45:37 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 17:45:37 +1300
Subject: Duplicate content filter..
References: <1191428555.278268.253700@g4g2000hsf.googlegroups.com>
Message-ID: <fe4fhh$ebo$3@lust.ihug.co.nz>

In message <1191428555.278268.253700 at g4g2000hsf.googlegroups.com>, Abandoned
wrote:

> I want to a idea for how can i find duplicate pages quickly and fast ?

Compute a hash based on a canonicalized version of the content? Disregard
white space, line wrap, upper/lower case, possibly even punctuation etc so
that you get the same hash in spite of these differences.


From kadeko at gmail.com  Mon Oct 15 08:04:15 2007
From: kadeko at gmail.com (looping)
Date: Mon, 15 Oct 2007 12:04:15 -0000
Subject: Twisted (or for loops ?) madness
In-Reply-To: <1192449101.901488.240680@v29g2000prd.googlegroups.com>
References: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
	<1192443010.957983.81970@q3g2000prf.googlegroups.com>
	<1192444397.510886.48990@i13g2000prf.googlegroups.com>
	<1192446109.954833.322080@v29g2000prd.googlegroups.com>
	<1192449101.901488.240680@v29g2000prd.googlegroups.com>
Message-ID: <1192449855.004032.199830@q5g2000prf.googlegroups.com>

On Oct 15, 1:51 pm, Michele Simionato <michele.simion... at gmail.com>
wrote:
> On Oct 15, 1:01 pm, looping <kad... at gmail.com> wrote:
>
> > So if I understand what Michele wrote (thanks too), when a function is
> > defined (with def), no scope is saved and every variable value not
> > passed in parameter is lost ?  It means that variable value come from
> > the outer scope when the function is called ?
>
> Yes, in my example you get the value of "i" at the function *calling*
> time,
> not at the function definition time. If you want to store the value at
> the
> definition time, you must use the default argument trick:
>
> funclist = []
> for i in 1,2,3:
>   def f(i=i):
>      print i
>   funclist.append(f)
>
>        Michele Simionato

Thanks Michele, now I understand how it works and I learned something
new. Not a bad day...



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sat Oct  6 12:57:02 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sat, 06 Oct 2007 18:57:02 +0200
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191677381.068666.65870@k79g2000hse.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1191677381.068666.65870@k79g2000hse.googlegroups.com>
Message-ID: <4707be3e$0$26696$426a74cc@news.free.fr>

Michele Simionato a ?crit :
> On Oct 6, 9:13 am, Bruno Desthuilliers <bruno.
> 42.desthuilli... at wtf.websiteburo.oops.com> wrote:
>> - talking about routes, you say:
>>
>> """
>> I have no Ruby On Rails background, so I don't see the advantages of routes.
>> """
>>
>> I don't have any RoR neither, but as far as I'm concerned, one of the
>> big points with routes is url_for(), that avoids having too much
>> hard-coded urls.
> 
> Well, url_for is convenient, I would not deny it. Still it is
> not compelling to me.

To me, yes - but the context probably makes some difference here. 
Anyway, even for apps I developped with older versions of Django or for 
Trac plugins, I missed this feature. I like being able to reorganize my 
url space, and having urls knowldege all over is very bad IMHO. While 
perhaps not the ultimate solution (is there one), routes does a good job 
with this IMHO.

(snip)

>> - about SQLAlchemy : here again, I used this package prior any
>> experience with Pylons. FWIW, I used it in the most basic, 'low-level'
>> way, ie without any ORM stuff, and I found it to be a pretty good
>> alternative to db-api. It's a bit complex, but powerful, and having the
>> possibility to handle sql requests as Python objects (instead of raw
>> strings) really helps.
> 
> I have wanted to do a serious test of SQLAlchemy for a
> couple of years, but never found the time :-(

Then rejoice : you'll have a better package to test, with better 
documentation !-)

> Do you (or something else) have something to say about Beaker?

Sorry, not so far. As I mentionned, I had to delay serious work with 
Pylons so far.

> I looked at the source code and it seems fine to me, but I have
> not used it directly, not stressed it. I need a
> production-level WSGI session middleware and I wonder what the
> players are (for instance how Beaker does compare with flup?)

Can't tell, but I'd trust the Pylons team on this kind of choices. 
They're doing good job so far AFAICT.


From dokondr at gmail.com  Mon Oct 15 05:38:32 2007
From: dokondr at gmail.com (Dmitri O.Kondratiev)
Date: Mon, 15 Oct 2007 13:38:32 +0400
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <471308FA.3070705@islandtraining.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
Message-ID: <53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>

Gary, thanks for lots of info!
Python strings are not lists! I got it now. That's a pity, I need two
different functions: one to reverse a list and one to reverse a string:

def reverseList(xs):
    if xs == []:
        return xs
    else:
        return (reverseList (xs[1:])) + [xs[0]]

def reverseStr(str):
    if str == "":
        return str
    else:
        return (reverseStr (str[1:])) + str[0]

Ok. Now regarding in-place reversal of a list:

>>> l = [1,2,3]
>>> l
[1, 2, 3]
>>> l.reverse()
>>> l
[3, 2, 1]

That was, as I expected. Good.

Then why this ? :

>>> ls = [1,2,3].reverse()
>>> ls
>>>
>>> print [1,2,3].reverse()
None
>>>
I mean, why ls is empty after assignment?

Also, I couldn't find in the Python docs what this form of slicing means:
xs[::-1]  ?

It works for creating a reversed copy of either a string or a list, but what
does '::-1' syntax means?

Thanks,

Dmitri O. Kondratiev
dokondr at gmail.com
http://www.geocities.com/dkondr

On 10/15/07, Gary Herron <gherron at islandtraining.com> wrote:
>
> Dmitri O.Kondratiev wrote:
> >
> > The function I wrote (below) reverses lists all right:
> >
> > def reverse(xs):
> >     if xs == []:
> >         return []
> >     else:
> >         return (reverse (xs[1:])) + [xs[0]]
> >
> >
> > >>> reverse ([1,2,3])
> > [3, 2, 1]
> > >>>
> >
> >
> > Yet when I try to reverse a string I  get:
> >
> > >>> reverse ("abc")
> >
> > ...
> > ...
> > ...
> >
> >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> >
> >     return (reverse (xs[1:])) + [xs[0]]
> >
> >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> >
> >     return (reverse (xs[1:])) + [xs[0]]
> >
> >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
> >
> >     if xs == []:
> >
> > RuntimeError: maximum recursion depth exceeded in cmp
> >
> > >>>
> >
> > What's wrong? Why recursion never stops?
> >
> If you are doing this as an python-learning exercise, then read on.   If
> you are doing this reversal for real code, then try:
>
>   xs.reverse() for in-place reversal of a list (but not a string), or
>   result = xs[::-1] for creating a reversed copy of either a string or a
> list
>
>
> Your recursion stops when xs == [], but when you're stripping characters
> off a string,  like 'abc', the remaining portion will be 'bc', then 'c',
> than '', but never [] so you 'll never stop.
>
> Try:
>
> if xs == []:
>     return []
> elif xs == '':
>     return ''
> else:
>     ...
>
>
> Gary Herron
>
>
> >
> > Thanks,
> > Dima
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071015/0d7594f6/attachment.html>

From arserlom at gmail.com  Mon Oct 29 11:34:58 2007
From: arserlom at gmail.com (Armando Serrano Lombillo)
Date: Mon, 29 Oct 2007 08:34:58 -0700
Subject: Built-in functions and keyword arguments
In-Reply-To: <Xns99D890339F424duncanbooth@127.0.0.1>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<Xns99D890339F424duncanbooth@127.0.0.1>
Message-ID: <1193672098.625545.321250@22g2000hsm.googlegroups.com>

On Oct 29, 3:10 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Armando Serrano Lombillo <arser... at gmail.com> wrote:
>
>
>
> > Why does Python give an error when I try to do this:
>
> >>>> len(object=[1,2])
> > Traceback (most recent call last):
> >   File "<pyshell#40>", line 1, in <module>
> >     len(object=[1,2])
> > TypeError: len() takes no keyword arguments
>
> > but not when I use a "normal" function:
>
> >>>> def my_len(object):
> >      return len(object)
>
> >>>> my_len(object=[1,2])
> > 2
>
> At the C level there are several options for how you define a function
> callable from Python. The most general form is
> METH_VARARGS|METH_KEYWORDS which accepts both a tuple of arguments and a
> dictionary of keyword arguments. These then have to be parsed to find
> the actual arguments.
>
> Many of the builtin functions use only METH_VARARGS which means they
> don't support keyword arguments. "len" is even simpler and uses an
> option METH_O which means it gets a single object as an argument. This
> keeps the code very simple and may also make a slight difference to
> performance.
>
> I don't know if the reason that most builtin functions don't accept
> keywords is just historical (someone would have to go through a lot of
> code and add keyword argument names) or if there really is any
> measurable performance difference to not using the METH_KEYWORDS option.
> Being able to write less C code may be the main factor.

Ok. I was suspecting something like this. Performance issues aside, I
think it would be a good idea if built-in functions behaved exactly
the same as normal functions.

BTW, I came into this problem when trying to use functools.partial:

import functools
getattrF = functools.partial(getattr, default=False)

which I think should have worked if getattr behaved as normal
functions do.

In the end I did:

def getattrF(object, name):
    return getattr(object, name, False)

Any better idea?



From no-spam at not-existing.invalid  Sat Oct 27 05:50:06 2007
From: no-spam at not-existing.invalid (robert)
Date: Sat, 27 Oct 2007 11:50:06 +0200
Subject: "sem_post: Invalid argument"
In-Reply-To: <1193430457.072852.27810@z24g2000prh.googlegroups.com>
References: <ffqse9$ci8$1@news.albasani.net>
	<1193342663.607436.219500@57g2000hsv.googlegroups.com>
	<ffr18e$n10$1@news.albasani.net>
	<1193430457.072852.27810@z24g2000prh.googlegroups.com>
Message-ID: <ffv1kf$kuj$1@news.albasani.net>

Jonathan Gardner wrote:
> On Oct 25, 2:19 pm, robert <no-s... at not-existing.invalid> wrote:
>> Jonathan Gardner wrote:
>>> On Oct 25, 12:56 pm, robert <no-s... at not-existing.invalid> wrote:
>>>> On a server the binary (red hat) installed python2.4 and also a
>>>> fresh compiled python2.5 spits "sem_post: Invalid argument".
>>>> What is this and how can this solved?
>>>> ...
>>>> Python 2.4.3 (#1, Jun  6 2006, 21:10:41)
>>>> [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-54)] on linux2
>>>> ...
>>>> server [~]# uname -a
>>>> Linux server 2.4.34.1-p4-smp-bigmem-JWH #1 SMP Mon Mar 19 03:26:57
>>>> JST 2007 i686 i686 i386 GNU/Linux
>>> Are you sure you have compatible binaries? Or did you install a random
>>> RPM without checking for dependencies?
>> Should be compatible - but I am not sure if the kernel was
>> recompiled on this machine. And at least the fresh ./configure'ed
>> and compiled py2.5, which yields the same problem, should be
>> maximum compatible. Maybe because this machine is a "smp-bigmem" ..
>>
> 
> At this point, I would start digging into the error messages
> themselves. Maybe a shout out to the developers of whatever code is
> generating that error message. When you understand under what
> conditions that error message is thrown, perhaps it will yield some
> insight into what python is doing differently than everything else.
> 

In the Python2.4 sources just this piece causes the sem_post error 
message:

void
PyThread_release_lock(PyThread_type_lock lock)
{
	sem_t *thelock = (sem_t *)lock;
	int status, error = 0;

	dprintf(("PyThread_release_lock(%p) called\n", lock));

	status = sem_post(thelock);
	CHECK_STATUS("sem_post");
}

=======
  ERRORS

     The sem_post() function will fail if:

     [EINVAL]
         The sem does not refer to a valid semaphore.
=======


with EINVAL - to me the only remaining reason is somehow a wrong 
sem_t memory layout - in the C compiler header file on this rented 
server - though the lock was established ok!?? ...


From gagsl-py2 at yahoo.com.ar  Mon Oct 29 02:20:49 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 03:20:49 -0300
Subject: Weird AttributeError With Imports
References: <mailman.540.1193591133.13605.python-list@python.org>
	<fg2glk$vq8$02$1@news.t-online.com> <4724CBE0.5010105@gmail.com>
Message-ID: <op.t0x3wzuzx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 28 Oct 2007 14:50:24 -0300, Juha S. <jusa.sj at gmail.com> escribi?:

> Peter Otten wrote:
>> You probably have a time module that you wrote yourself and which is now
>> hiding the one in python's standard library. Was your mytime.py formerly
>> named time.py, and if so, did you remove the corresponding time.pyc?
>
> Yes, I did have mytime.py named as time.py previously. Now that I
> deleted the .pyc it seems to work fine. Thanks!

Wow! Most standard crystall balls would tell just about the time.py  
problem. Yours is certainly a very sophisticated one! It was even capable  
of detecting a rename and a forgotten .pyc file - that's far beyond the  
usual range! Congratulations!

-- 
Gabriel Genellina



From python.list at tim.thechases.com  Thu Oct 11 14:37:22 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 11 Oct 2007 13:37:22 -0500
Subject: Is hostmonster any good for hosting python?
In-Reply-To: <1192125806.935747.170060@o80g2000hse.googlegroups.com>
References: <1192037226.271956.262390@o80g2000hse.googlegroups.com>	<1192103847.465144.44670@r29g2000hsg.googlegroups.com>	<mailman.75.1192105146.927.python-list@python.org>
	<1192125806.935747.170060@o80g2000hse.googlegroups.com>
Message-ID: <470E6D62.1090309@tim.thechases.com>

> I should have mentioned, I am thinking about using a python framework,
> either django, turbogears, or pylons.
> 
> I think these frameworks require a newer version of python, maybe 2.4.

I can't speak for the others, but I know Django can be deployed
with 2.3+ (though they offer some nicities if using 2.4).

> Also, I think some of them require a newer version of Apache - 2.0 or

mod_python requires Apache 2.x so if you're deploying with
mod_python, yes.  However, if you deploy with lighty+fastcgi,
it's moot what version of Apache you have. :)

> better. I also think these python frameworks all work with fastcgi,
> which - I think - is possible with hostmonster. Although fastcgi is
> acceptable, it is generally not the preferred solution.

The preferred Django deployment environments are

 - Apache + mod_python
 - Apache + FastCGI
 - lighttpd + FastCGI

> I do not think you will get reasonable performance with CGI, even if
> factcgi/mod_python/wsgi are not officially required.

No...with plain-ol'-CGI, performance is abysmal...the entire
framework would be reloaded for each request.  Possibly feasible
for development if you're patient and have nothing better, but
CGI is a generally bad idea.

> Also, I doubt you will find mod_python on any "standard" shared
> hosting. 

To get a python-framework environment, you usually have to get a
better hosting service as the need for mod_python or fastcgi
limits you to these hosting services.  That means no
bottom-of-the-barrel priced hosting services (which usually just
offer static pages, basic CGI, or PHP).

If one *must* use python in a CGI environment, I'll plug WebStack
(the author lurks here on c.l.p, IIRC) which does a nice job of
abstracting deployment environments so you can deploy to a
variety of targets with minimal fuss.  I have several projects in
the wild that use WebStack, before I found Django.

-tkc





From paul.hankin at gmail.com  Wed Oct 10 08:04:52 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 10 Oct 2007 05:04:52 -0700
Subject: Last value of yield statement
In-Reply-To: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
References: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
Message-ID: <1192017892.778316.95890@57g2000hsv.googlegroups.com>

On Oct 10, 11:19 am, Shriphani <shripha... at gmail.com> wrote:
> Hello all,
>
> Let us say I have a function like this:
>
> def efficientFiller(file):
>         worthless_list = []
>         pot_file = open(file,'r')
>         pot_file_text = pot_file.readlines()
>         for line in pot_file_text:
>                 if line.find("msgid") != -1:
>                         message_id = shlex.split(line)[1]
>                         if message_id in dictionary:
>                                 number = pot_file_text.index(line)
>                                 corresponding_crap =
> dictionary.get(message_id)
>                                 final_string = 'msgstr' + " " + '"' +
> corresponding_crap + '"' + '\n'
>                                 pot_file_text[number+1] = final_string
>                                 yield pot_file_text
>
> efficient_filler =  efficientFiller("libexo-0.3.pot")
> new_list = list(efficient_filler)
> print new_list
>
> I want to plainly get the last value the yield statement generates.
> How can I go about doing this please?

If you want only one value, you should be using return rather than
yield. What do you think your code does - and what is it supposed to
do? If it's not doing what it's supposed to be doing, it's better to
understand why not rather than try to patch up the output.

I'm going to guess that you want to take the lines of a file, and
after every line of the form 'msgid K' insert a line 'msgstr "..."'
when K is in some dictionary you've got. I'll assume you want the new
lines as a generator rather than as a list.

Then, something like (untested)

def lookup_msgids(filename):
    """Yield lines from the given file, with 'msgstr' lines added
       after 'msgid' lines when the id is in the id dictionary."""
    for line in open(filename, 'r'):
        yield line
        if line.startswith('msgid'):
            msgid = shlex.split(line)[1]
            if msgid in dictionary:
                yield 'msgstr "%s"\n' % dictionary[msgid]


libexo_pot = list(lookup_msgids('libexo-0.3.pot'))
print libexo_pot

--
Paul Hankin



From thorsten at thorstenkampe.de  Tue Oct  2 12:35:55 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 2 Oct 2007 17:35:55 +0100
Subject: Can you please give me some advice?
References: <mailman.1300.1191147737.2658.python-list@python.org>
	<13fuv0gh7342r27@corp.supernews.com>
	<1191173228.756531.225860@o80g2000hse.googlegroups.com>
	<46fffb38$0$30242$426a74cc@news.free.fr>
Message-ID: <MPG.216c83c3f3b24976989712@news.individual.de>

* Bruno Desthuilliers (Sat, 29 Sep 2007 19:17:43 +0200)
> cmpython at gmail.com a ?crit :
> (snip)
> > I know nothing of Ruby, but just the fact that in Ruby the Hello World
> > program is
> > 
> > puts 'Hello, World!'
> > 
> > whereas the Python Hello World program is
> > 
> > print 'Hello, World!'
> > 
> > suggests to me that Python is more intuitive because the word "print"
> > has a meaning in English that makes sense given what you want to do,
> > but "puts" just doesn't.
> 
> Hem.... Sorry, but it reminds me of the most clueless comments on Python 
> I've seen on c.l.ruby. I really don't think Python is more or less 
> "intuitive" than Ruby, and making a judgement on such a pointless detail 
> is not even worth the bandswith IMHO. FWIW, 'puts' means 'put string' 
> (implied : on stdout), which is certainly much more semantically correct 
> than what 'print' implies.

You missed the point. "puts" for printing something to stdout is 
definitely a bad name for this operation. I mean "put string" (even 
abbreviated) what does that mean?

On the other hand it does not mean that Python ist more intuitive than 
Ruby - only the printing to stdout is more intuitive.


From deets at nospam.web.de  Tue Oct  2 12:22:17 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 02 Oct 2007 18:22:17 +0200
Subject: I earn $36800 a month with google adsense
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
	<1191240372.428917.253350@o80g2000hse.googlegroups.com>
	<1191289294.449262.234020@r29g2000hsg.googlegroups.com>
	<1191330957.461057.313830@k79g2000hse.googlegroups.com>
Message-ID: <5mf9hpFd33jkU1@mid.uni-berlin.de>

> 
> Wow ! I have a question though.
> 
> If you really make $38600 a month, how come you even bother to spam
> us?

Please, don't reply - and especially, don't reply quoting the spammer's
site, so his page-rank inncreases...

diez


From __peter__ at web.de  Wed Oct 17 11:44:39 2007
From: __peter__ at web.de (Peter Otten)
Date: Wed, 17 Oct 2007 17:44:39 +0200
Subject: Order by value in dictionary
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de> <5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
	<5nmk3kFiv0krU2@mid.uni-berlin.de>
	<1192633790.090464.306800@t8g2000prg.googlegroups.com>
Message-ID: <ff5al7$g6d$03$1@news.t-online.com>

Abandoned wrote:

> These are some method..
> Now the fastest method is second..

Your four functions return three different results for the same input.
First make sure it's correct, then make it faster (if necessary).

Here are two candidates:

def largest_sort(d, n):
    return sorted(d, key=d.__getitem__, reverse=True)[:n]

def largest_heap(d, n):
    return heapq.nlargest(n, d, d.__getitem__)

Peter


From mdipierro at cti.depaul.edu  Thu Oct 25 11:29:25 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Thu, 25 Oct 2007 10:29:25 -0500
Subject: python project ideas
In-Reply-To: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <6E2AAB53-81C9-4DC1-B696-1B6ABCA9ABA1@cti.depaul.edu>

Hi Menkaur,

I work in a university as well. I am looking for some help in  
developing an apache graphical  log analyzer using gluon http:// 
mdp.cti.depaul.edu/
I am about to release a pre-configured virtual appliance with it and  
a graphical log analyzer would be very handy.

Massimo



On Oct 24, 2007, at 11:09 PM, menkaur at gmail.com wrote:

> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group.
> May be something useful for open source or python community ...
> Well, just post what you think could be appropriate ...
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From paul.brauner at loria.fr  Mon Oct 22 05:58:56 2007
From: paul.brauner at loria.fr (Paul Brauner)
Date: Mon, 22 Oct 2007 09:58:56 +0000 (UTC)
Subject: python with braces pre-processor
References: <ffhrdr$ikp$1@news.ciril.fr>
	<1193046718.083827.246210@z24g2000prh.googlegroups.com>
Message-ID: <ffhs90$ikp$2@news.ciril.fr>

I'll look at that. Thanks a lot !


From sipickles at hotmail.com  Sat Oct 20 05:12:23 2007
From: sipickles at hotmail.com (Simon Pickles)
Date: Sat, 20 Oct 2007 10:12:23 +0100
Subject: Running another python interpreter
In-Reply-To: <op.t0g0ieg7x6zn5v@gabriel2.softlabbsas.com.ar>
References: <47179DBA.8040407@hotmail.com>
	<4717A261.7090303@hotmail.com>	<mailman.187.1192737606.13605.python-list@python.org>	<1192742192.830006.95130@e9g2000prf.googlegroups.com>
	<op.t0g0ieg7x6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <4719C677.6070303@hotmail.com>

This is very nearly perfect. I have a second console window. 
Unfortunately, the first is waiting for the second to close. Is there 
anyway to specify the equivalent of os.P_NOWAIT?

Gabriel Genellina wrote:
> --- Simon Pickles <sipickles at hotmail.com> escribi?:
>
>   
>> os.spawnl(os.P_NOWAIT, sys.executable,
>> sys.executable, "gateway.py")
>> ... works but both process output to the same
>> interpreter window. Is there a way to run another
>> interpreter window containing gateway.py?
>>     
>
> Use the subprocess module, passing CREATE_NEW_CONSOLE into creationflags:
>
> subprocess.call([sys.executable, "gateway.py", "other", "arguments"],
>                  creationflags = subprocess.CREATE_NEW_CONSOLE)
>
>   


From 3wbl at qlink.queensu.ca  Thu Oct 25 15:32:51 2007
From: 3wbl at qlink.queensu.ca (Brent Lievers)
Date: 25 Oct 2007 19:32:51 GMT
Subject: print vs sys.stdout.write, and UnicodeError
References: <ffqk7t$jm2$1@knot.queensu.ca>
	<mailman.458.1193339188.13605.python-list@python.org>
Message-ID: <ffqr13$gvi$1@knot.queensu.ca>

Martin Marcher <martin at marcher.name> wrote:
> 25 Oct 2007 17:37:01 GMT, Brent Lievers <3wbl at qlink.queensu.ca>:
>> Greetings,
>>
>> I have observed the following (python 2.5.1):
>>
>> >>> import sys
>> >>> print sys.stdout.encoding
>> UTF-8
>> >>> print(u'\u00e9')
>> ?
>> >>> sys.stdout.write(u'\u00e9\n')
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in <module>
>> UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in
>> position 0: ordinal not in range(128)
> 
>>>> sys.stdout.write(u'\u00e9\n'.encode("UTF-8"))
> ?
> 
>> Is this correct?  My understanding is that print ultimately calls
>> sys.stdout.write anyway, so I'm confused as to why the Unicode error
>> occurs in the second case.  Can someone explain?
> 
> you forgot to encode what you are going to "print" :)

Thanks.  I obviously have a lot to learn about both Python and Unicode ;-)

So does print do this encoding step based on the value of 
sys.stdout.encoding?  In other words, something like:

  sys.stdout.write(textstr.encode(sys.stdout.encoding))

I'm just trying to understand why encode() is needed in the one case but 
not the other.

Cheers,

Brent
 


From kay.schluehr at gmx.net  Sun Oct 28 22:20:13 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Sun, 28 Oct 2007 19:20:13 -0700
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
In-Reply-To: <87bqaihmq7.fsf@benfinney.id.au>
References: <87bqaihmq7.fsf@benfinney.id.au>
Message-ID: <1193624413.723453.71700@22g2000hsm.googlegroups.com>

On Oct 28, 11:56 pm, Ben Finney <b... at benfinney.id.au> wrote:
> Howdy all,
>
> Ned Batchelder has been maintaining the nice simple tool 'coverage.py'
> <URL:http://nedbatchelder.com/code/modules/coverage.html> for
> measuring unit test coverage.
>
> On the same site, Ned includes documentation
> <URL:http://nedbatchelder.com/code/modules/rees-coverage.html> by the
> previous author, Gareth Rees, who says in the "Limitations" section:
>
>     Statement coverage is the weakest measure of code coverage. It
>     can't tell you when an if statement is missing an else clause
>     ("branch coverage"); when a condition is only tested in one
>     direction ("condition coverage"); when a loop is always taken and
>     never skipped ("loop coverage"); and so on. See [Kaner 2000-10-17]
>     <URL:http://www.kaner.com/pnsqc.html> for a summary of test
>     coverage measures.
>
> So, measuring "coverage of executed statements" reports complete
> coverage incorrectly for an inline branch like 'foo if bar else baz',
> or a 'while' statement, or a 'lambda' statement. The coverage is
> reported complete if these statements are executed at all, but no
> check is done for the 'else' clause, or the "no iterations" case, or
> the actual code inside the lambda expression.
>
> What approach could we take to improve 'coverage.py' such that it
> *can* instrument and report on all branches within the written code
> module, including those hidden inside multi-part statements?

I used to write once a coverage tool ( maybe I can factor this out of
my tool suite some time ) which is possibly transformative. Currently
it generates measurement code for statement coverage and i'm not sure
it has more capabilities than coverage.py because I was primary
interested in the code generation and monitoring process, so I didn't
compare.

Given it's nature it might act transformative. So a statement:

if a and b:
    BLOCK

can be transformed into

if a:
    if b:
        BLOCK

Also

if a or b:
    BLOCK

might be transformed into

if a:
   BLOCK
elif b:
   BLOCK

So boolean predicates are turned into statements and statement
coverage keeps up. This is also close to the way bytecode works
expressing "and" | "or" predicates using jumps. I'm not sure about
expressions yet, since I did not care about expression execution but
traces.

The underlying monitoring technology needs to be advanced. I used a
similar approach for an even more interesting purpose of feeding
runtime type information back into a cloned parse tree of the initial
tree which might be unparsed to type annotated source code after
program execution. But that's another issue.

The basic idea of all those monitorings is as follows: implement an
identity function with a side effect. I'm not sure how this monitoring
code conflicts with rather deep reflection ( stacktrace inspection
etc. )

Kay



From nnorwitz at gmail.com  Tue Oct  9 02:38:29 2007
From: nnorwitz at gmail.com (nnorwitz at gmail.com)
Date: Tue, 09 Oct 2007 06:38:29 -0000
Subject: finding out the call (and not only the caller)
In-Reply-To: <mailman.1652.1191793657.2658.python-list@python.org>
References: <mailman.1652.1191793657.2658.python-list@python.org>
Message-ID: <1191911909.853048.116640@19g2000hsx.googlegroups.com>

On Oct 7, 2:47 pm, "Francesco Guerrieri" <f.guerri... at gmail.com>
wrote:
> Hi,
>
> Today I've been thinking a bit about the "python internals". Inspired
> by this recipe:http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66062
> I found out a little problem which haven't been able to solve.
> In short, is there a way to find out how a given name lookup was started?

If you constrain the problem, yes, it's possible.  However, the
solution below is limited to CPython and has other limits.

> It is not enough to know the name of the caller as given by the recipe.
>
> a little example:
> import inspect
>
> class test(object):
>     def __init__(self, a_list):
>         self.my_list = a_list
>     def info(self):
>         for counter, item in
> enumerate(inspect.getouterframes(inspect.currentframe())):
>             print counter, item
>         return self.my_list
>      data = property(info)
>
> if __name__ == '__main__':
>     a = test([1111,2222])
>     def g(a_seq):
>         for item in a_seq:
>             print item, '\n'
>     g(a.data)
>
> This prints
> 0 (<frame object at 0x00B58B08>, 'myfile.py', 10, 'info', ['
> for counter, item in
> enumerate(inspect.getouterframes(inspect.currentframe())):\n'], 0)
> 1 (<frame object at 0x00A5B000>, 'myfile.py', 38, '<module>', ['
> g(a.data)\n'], 0)
> 1111
> 2222
>
> What I would like is a reference to g itself, and not only to
> '<module>' which is the caller according to f_code.co_name.
> I thought of manually parsing the string '    g(a.data)\n' to extract
> the name but I'm sure that it would be a rather fragile approach, and
> so I decided that it was time to ask for help :-)
> To 'get a feeling', I tried to disassemble the code:
>
>     code = compile('g(a.data)', 'test', 'single')
>     dis.dis(code)
>
> and this is the result
>
> 0 LOAD_NAME                0 (g)
> 3 LOAD_NAME                1 (a)
> 6 LOAD_ATTR                2 (data)
> 9 CALL_FUNCTION            1
> 12 PRINT_EXPR
> 13 LOAD_CONST               0 (None)
> 16 RETURN_VALUE
>
> So ... I'm looking for the first name loaded. Is there a reference to
> it, somewhere?

#!/usr/bin/python

import sys, opcode


def WhoCalledMe(a, *args, **kwargs):
  # Get the calling frame and the bytecode index of the last
instruction.
  f = sys._getframe(1)
  lasti = f.f_lasti
  code = f.f_code.co_code

  # TODO: Needs to be extended for the other 3 variants of
CALL_FUNCTION.
  assert ord(code[lasti]) == opcode.opmap['CALL_FUNCTION']
  # Get the number of arguments the function was called with.
  num_args = ord(code[lasti+1])
  num_kwargs = ord(code[lasti+2])

  # Get the instruction that loaded the object being called.
  # Work backwards from the function call.  3 is the size of each
LOAD_* op
  # (assuming EXTENDED_ARG is not used).  1 for the previous opcode,
  # number of positional arguments, and 2 for kwargs (1 for the name,
  # 1 for the value).
  i = lasti - 3 * (1 + num_args + 2 * num_kwargs)
  # Again, this assumes EXTENDED_ARG is not used.
  load_index = ord(code[i+1]) + (ord(code[i+2]) << 8)

  # Another assumption that isn't always true, but convenient for our
case.
  opname = opcode.opname[ord(code[i])]
  assert opname.startswith('LOAD_')

  # Get the name of the variable and its value.
  name = value = None
  if opname in ('LOAD_FAST', 'LOAD_NAME'):
    try:
      name = f.f_code.co_varnames[load_index]
      value = f.f_locals[name]
    except LookupError:
      assert opname == 'LOAD_NAME'
      # opname must be LOAD_NAME and the variable is a global, ignore
it.

  if opname in ('LOAD_GLOBAL', 'LOAD_NAME') and not name:
    try:
      name = f.f_code.co_names[load_index]
      value = f.f_globals[name]
    except LookupError:
      print 'Uh-oh.  Should have found the name in globals.'
  # TODO: handle LOAD_CONST, LOAD_DEREF and LOAD_CLOSURE.

  print 'Called by', name, 'value is', value


def main():
  WhoCalledMe(0)

  MeDammit = WhoCalledMe
  MeDammit(1, k1=1, k2=2)


if __name__ == '__main__':
  main()

  WhoCalledMe(0)

  MeDammit = WhoCalledMe
  MeDammit(1, k1=1, k2=2)

# end of script

If you run the scrit above, it should print something like:

Called by WhoCalledMe value is <function WhoCalledMe at
0x2ac718dff6e0>
Called by MeDammit value is <function WhoCalledMe at 0x2ac718dff6e0>
Called by WhoCalledMe value is <function WhoCalledMe at
0x2ac718dff6e0>
Called by MeDammit value is <function WhoCalledMe at 0x2ac718dff6e0>

The code doesn't handle all the cases (e.g., nested functions), but
gives you an idea of what can be done and where to look for the info
(ie, in the stack frame and how to parse the byte codes to some
extent).  For nested functions, look in co_consts.

Bytecodes are specific to CPython.  This code won't work on
IronPython, Jython, or PyPy.  This code really shouldn't be used for
production.  However, it demonstrates some of the info available.

n



From steve at REMOVE-THIS-cybersource.com.au  Fri Oct  5 07:00:37 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 05 Oct 2007 11:00:37 -0000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
Message-ID: <13gc6alr30la682@corp.supernews.com>

On Fri, 05 Oct 2007 00:12:33 -0500, Robert Kern wrote:

> This is somewhat odd, because most modules aren't exposed that way. They
> are either in their own file and accessed by importing them directly, or
> they are inside a package.

Any time you say:

import parrot


in one of your modules, you export parrot to anything that imports your 
module. (Unless you take specific steps to prevent it, for instance with 
del parrot.)


Just to pick some random examples:

>>> import ConfigParser, base64, fileinput
>>> ConfigParser.re
<module 're' from '/usr/lib/python2.5/re.pyc'>
>>> base64.struct
<module 'struct' from '/usr/lib/python2.5/struct.pyc'>
>>> base64.binascii
<module 'binascii' from '/usr/lib/python2.5/lib-dynload/binascii.so'>
>>> fileinput.sys
<module 'sys' (built-in)>
>>> fileinput.os
<module 'os' from '/usr/lib/python2.5/os.pyc'>


It's quite common.


-- 
Steven.


From jcd at sdf.lonestar.org  Tue Oct  9 08:54:31 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 9 Oct 2007 08:54:31 -0400
Subject: why did MIT drop scheme for python in intro to computing?
In-Reply-To: <2fomg3hkekk99kgcjag280hgb02np9hngt@4ax.com>
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
	<2fomg3hkekk99kgcjag280hgb02np9hngt@4ax.com>
Message-ID: <20071009125431.GA18066@sdf.lonestar.org>

On Tue, Oct 09, 2007 at 06:28:00AM -0500, Harold Ancell wrote regarding Re: why did MIT drop scheme for python in intro to computing?:
> 
> On Tue, 09 Oct 2007 03:28:53 -0000, gnuist006 at hotmail.com wrote:
> 
> >On Oct 8, 1:23 pm, b... at cs.berkeley.edu (Brian Harvey) wrote:
> 
> >> "Kjetil S. Matheussen" <k.s.matheus... at notam02.no> writes:
> 
> >> >I don't think your speculations makes very much sence.
> 
> >> Amen.
> 
> >> And, in any case, there's no need to speculate.
> >> MIT has published, on their web site, pages and
> >> pages of rationale for the new curriculum.
> 
> >> The most important point, imho, is that the
> >> programming language was the /least/ important
> >> aspect of the decision.  The most important
> >> aspect was the move to an application-based
> >> (rather than topic-based) organization of the
> >> curriculum.  The details flow out of that big
> >> shift of focus.
> 
> >[ much snipped. ]
> 
> >Does scheme have a gui library?
> 
> >I really dont follow the logic.
> 
> I really REALLY hope that not a single GUI is
> constructed in 6.01-2; adding that to the load
> would be stark raving mad (look and you'll agree).
> 
> As Brian points out, languages are a means to the
> end of teaching stuff, and I wouldn't be surprised
> if not a single GUI is constructed in the entire
> required/restricted elective curriculum.  That's
> just not to the point of an EECS education that
> has to be squeezed into 4/5 years (most students
> take the combined MEng path, where the MS degree
> is terminal and leads straight to industry).
> 
> If any library was a consideration in choosing
> Python, it was the robots one for 6.01.  Note also
> that Hal helped design and teach 6.01, and fully
> supports the new curriculum.
> 
> As a total LISP/Scheme fanatic who finds parts of
> Python's syntax to be too hard for his brain (not
> the indentation, that's weird but useful and cool,
> much like S-expressions in LISP), I looked hard at
> the beginning of 6.01 where they're only teaching
> SICP.
> 
> For that purpose, Python is not "awful" (remember,
> I believe LISP is the One True Way of Computing).
> For that initial bit of SICP material, I do not
> believe the students will be handicapped.
> 
> Beyond that initial bit of material, I have no
> informed opinions.
> 
> 				- Harold
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list

I, for one, (coming from the Python side) would be thrilled to see a rigorous SICP-like book published using Python as its basis.  But maybe with the new change of focus to application based, that won't be forthcoming.  We'll see.

Cheers,
Cliff




From paul.hankin at gmail.com  Fri Oct 12 09:25:00 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Fri, 12 Oct 2007 13:25:00 -0000
Subject: Last iteration?
In-Reply-To: <mailman.125.1192195110.927.python-list@python.org>
References: <fenk0r$5er$03$1@news.t-online.com>
	<mailman.125.1192195110.927.python-list@python.org>
Message-ID: <1192195500.305696.268530@i13g2000prf.googlegroups.com>

On Oct 12, 2:18 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> On Fri, 2007-10-12 at 12:58 +0200, Florian Lindner wrote:
> > Hello,
> > can I determine somehow if the iteration on a list of values is the last
> > iteration?
>
> > Example:
>
> > for i in [1, 2, 3]:
> >    if last_iteration:
> >       print i*i
> >    else:
> >       print i
>
> > that would print
>
> > 1
> > 2
> > 9
>
> Here's another solution:
>
> mylist = [1,2,3]
> for j,i in reversed(list(enumerate(reversed(mylist)))):
>   if j==0:
>      print i*i
>   else:
>      print i

Nice! A more 'readable' version is:

mylist = [1,2,3]
for not_last, i in reversed(list(enumerate(reversed(mylist)))):
  if not_last:
     print i
  else:
     print i * i

--
Paul Hankin



From paul at boddie.org.uk  Tue Oct 16 06:16:44 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Tue, 16 Oct 2007 03:16:44 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
Message-ID: <1192529804.759199.76350@i13g2000prf.googlegroups.com>

On 11 Okt, 08:23, IamIan <ian... at gmail.com> wrote:
> My website is built from a Python CGI and works great. I'm now
> including Google Ads, which requires two pieces of JavaScript; the
> first contains the display settings for the ads, and the second piece
> is a very lengthy garbled js file athttp://pagead2.googlesyndication.com/pagead/show_ads.js

Shudder! I don't think I'm even going to look at that.

> The first piece of JavaScript works fine and the ads display
> correctly, however the second file throws an "unterminated string
> literal" js error. Looking at it you can see a healthy amount of both
> single and double quotes, which is where my problem lies.

Are you including the JavaScript inline or using a script element in
your HTML?

> What is the best way to get the second js file into a nice printable/
> usable format? cgi.escape? xml.sax.saxutils.quoteattr? String
> substitution? I could use some guidance.

If you're just referencing the JavaScript using a script element, you
don't need to think about encoding, escaping or quoting it since the
browser will read it as text/x-javascript or something like that.
Otherwise, if you have a desperate need to include the JavaScript
inline (actually embedded in the HTML page), then it may help to
include it in a CDATA section. I recall various tricks that may be
necessary, especially when dealing with Internet Explorer brokenness,
but not having to serve Windows users any more (particularly those who
also like ActiveX and think it's part of the Web) means that I don't
care about or recall those tricks readily. Pretending that IE doesn't
support lots of standards usually sets you off on the right foot,
though.

Paul



From sjdevnull at yahoo.com  Thu Oct 18 16:09:36 2007
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: Thu, 18 Oct 2007 13:09:36 -0700
Subject: Convert string to command..
In-Reply-To: <47179a04$0$16398$426a74cc@news.free.fr>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
	<47179a04$0$16398$426a74cc@news.free.fr>
Message-ID: <1192738176.900461.12470@e9g2000prf.googlegroups.com>

On Oct 18, 1:38 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> Abandoned a ?crit :
> (snip)
>
> > I'm very confused :(
> > I try to explain main problem...
> > I have a table like this:
> > id-1 | id-2 | value
> > 23     24       34
> > 56     68       66
> > 56     98       32455
> > 55     62       655
> > 56     28       123
> > .... ( 3 millions elements)
>
> > I select where id=56 and 100.000 rows are selecting but this took 2
> > second. (very big for my project)
>
> Not to bad in the absolute.
>
> > I try cache to speed up this select operation..
> > And create a cache table:
> > id-1 | all
> > 56    {68:66, 98:32455, 62:655}
>
> I really doubt this is the right way to go.
>
> > When i select where id 56 i select 1 row and its took 0.09 second but
> > i must convert text to dictionary..
>
> > Have you got any idea what can i do this conver operation ?
>
> Other alread answered
>
> > Have you got any idea what can i do cache for this table ?
>
> Depends on your RDBMS. And as far as I'm concerned, I'd start by trying
> to find out how to optimize this query within the RDBMS - good ones are
> usually highly optimized softwares with provision for quite a lot of
> performance tuning.

Just the overhead of the query is a killer compared to a dictionary
lookup in Python, even if all you're doing is selecting an integer
from a 1-row, 1-column table.

Usually you can get around that by making a single query to return all
of your results (or a handful of queries), but occasionally it just
doesn't matter how fast the DB can get to the data--the simple act of
asking it is slow enough on its own.



From robert.kern at gmail.com  Wed Oct 17 02:21:39 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 17 Oct 2007 01:21:39 -0500
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <13hb0ss1oamhr14@corp.supernews.com>
References: <471530E3.9090602@gmail.com>	<mailman.96.1192573101.13605.python-list@python.org>
	<13hb0ss1oamhr14@corp.supernews.com>
Message-ID: <ff49lp$qo4$1@ger.gmane.org>

Grant Edwards wrote:
> On 2007-10-16, Robert Kern <robert.kern at gmail.com> wrote:
> 
>> It's not universal. Many people consider it harmful. Google "reply-to considered
>> harmful" for a variety of opinions, for and against.
>>
>> I use GMane to read and post to this list because I like my lists to act like
>> USENET.
>>
>>   http://gmane.org
> 
> Since "this list" is just mirroring a Usenet news group,
> wouldn't it be more straight-forward to just use a real Usenet
> news server?

I use GMane because I can always get to it whereas I can only connect to my
ISP's when I'm on my ISP's network. Actually, I haven't checked if my current
ISP even has USENET, but the one I was using before I switched to GMane was like
this.

-- 
Robert Kern

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



From gnewsg at gmail.com  Fri Oct  5 16:31:33 2007
From: gnewsg at gmail.com (=?iso-8859-1?q?Giampaolo_Rodol=E0?=)
Date: Fri, 05 Oct 2007 13:31:33 -0700
Subject: unit testing
In-Reply-To: <47054a3d$0$16347$426a74cc@news.free.fr>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
Message-ID: <1191616293.965858.43000@d55g2000hsg.googlegroups.com>

On 3 Ott, 14:37, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> Paul Rubin a ?crit :
>
> > brad <byte8b... at gmail.com> writes:
>
> >>Does anyone else feel that unittesting is too much work? Not in
> >>general, just the official unittest module for small to medium sized
> >>projects?
>
> > Yeah, unittest is sort of a Java-ism.  You might try the newer doctest
> > module instead.
>
> Or py.test or nose, which are both more complete than doctest and more
> pythonics than the unittest module.

Very interesting, thank you.
This is the first time I heard about py.test so I took a look at what
it is:
http://codespeak.net/py/dist/test.html
http://ianbicking.org/docs/pytest-presentation/pytest-slides.html

At a first look it seems very comfortable to me but I noticed that all
usage examples shown uses nothing but the assert statement:

def test_answer():
    assert 42 == 43

What's the equivalent of unittest's "assertRaises"?
In certain situations it is also useful to test wether an exception
(along its type) is raised or not.
Does py.test support such thing?



From bbxx789_05ss at yahoo.com  Fri Oct 12 22:09:46 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: Fri, 12 Oct 2007 19:09:46 -0700
Subject: raw_input() and utf-8 formatted chars
In-Reply-To: <5na4jvFh28v6U2@mid.uni-berlin.de>
References: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
	<1192216685.923198.279040@v29g2000prd.googlegroups.com>
	<1192220315.602812.155810@z24g2000prh.googlegroups.com>
	<5na4jvFh28v6U2@mid.uni-berlin.de>
Message-ID: <1192241386.568665.140500@y27g2000pre.googlegroups.com>

On Oct 12, 2:43 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> You mean literally!?  Then of course I get A\xcc\x88 because that's what I
> entered.  In string literals in source code the backslash has a special
> meaning but `raw_input()` does not "interpret" the input in any way.
>

Then why don't I end up with the same situation as this:

> >> > s = 'A\xcc\x88'   #capital A with umlaut
> >> > print s           #displays capital A with umlaut


> > And what is it that your keyboard enters to produce an 'a' with an umlaut?
>
> *I* just hit the ? key.  The one right next to the ? key.  ;-)
>

...and what if you don't have an a-with-umlaut key?



From ldo at geek-central.gen.new_zealand  Tue Oct  2 22:52:20 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 03 Oct 2007 15:52:20 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <1182093200.598418.218620@e9g2000prf.googlegroups.com>
	<1182272495.990807.99110@a26g2000pre.googlegroups.com>
	<87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga> <87lkao8xgk.fsf@web.de>
	<uk5q5dey6.fsf@cybuild.com>
Message-ID: <fdv054$u4b$1@lust.ihug.co.nz>

In message <uk5q5dey6.fsf at cybuild.com>, Kamen TOMOV wrote:

> On Sun, Sep 30 2007, Klaus Schilling wrote:
> 
>> private property is unethical
> 
> How I craved to read that!
> 
> Viva la revolution!

Ewige Blumenkraft!

French-Canadian bean soup!


From kalbrun.pawel at gmail.com  Thu Oct 25 03:53:27 2007
From: kalbrun.pawel at gmail.com (clbr)
Date: Thu, 25 Oct 2007 07:53:27 -0000
Subject: python project ideas
In-Reply-To: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <1193298807.119228.319630@k79g2000hse.googlegroups.com>

On Oct 25, 5:09 am, "menk... at gmail.com" <menk... at gmail.com> wrote:
> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group.
> May be something useful for open source or python community ...
> Well, just post what you think could be appropriate ...

Rewrite moodle in python?:)



From lew at lewscanon.com  Mon Oct  8 01:11:04 2007
From: lew at lewscanon.com (Lew)
Date: Mon, 08 Oct 2007 01:11:04 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <1191819894.369786.130300@v3g2000hsg.googlegroups.com>
References: <87tzt3ihev.fsf@kobe.laptop><m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
Message-ID: <nMidnf2Pqut1JpTanZ2dnUVZ_sfinZ2d@comcast.com>

bbound at gmail.com wrote:
> Don't both "man" and those words for measurement come ultimately from
> words for "hand" (similarly to words like "manual", as in labor)? Our
> clever hands with their opposable thumbs being considered a defining
> characteristic. And our tool use thus derived. Handspans also having
> been a common (if imprecise) early unit of measurement (along with
> forearm-spans, as in cubits, strides, and foot-length, from which the
> measurement in feet still derives its name).

For most humans, the length of their foot from heel to toe is nearly equal to 
the length of their forearm elbow to wrist.

-- 
Lew


From mail at timgolden.me.uk  Fri Oct  5 03:58:16 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 05 Oct 2007 08:58:16 +0100
Subject: Cross platform way of finding number of processors on a machine?
In-Reply-To: <66d0a6e10710042102m5e7bf9a9i9c6e7ff5c796c608@mail.gmail.com>
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<66d0a6e10710042102m5e7bf9a9i9c6e7ff5c796c608@mail.gmail.com>
Message-ID: <4705EE98.4080006@timgolden.me.uk>

Nicholas Bastin wrote:
> On 10/4/07, John <weekender_ny at yahoo.com> wrote:
>> Is there a way to find the number of processors on a machine (on linux/
>> windows/macos/cygwin) using python code (using the same code/cross
>> platform code)?
> 
> There's no single call that will give you the same info on every
> platform, but you can obviously write this yourself and switch based
> on os.uname()[0] in most cases.

Second that point about not getting one cross-platform
answer. Under Windows, WMI is often the way to go for
these things:

   http://msdn2.microsoft.com/en-us/library/aa394373.aspx

but, as Nicholas noted:

   """
   Windows Server 2003, Windows XP, and Windows 2000:
     This property is not available.
   """

since it's presumably not available in anything earlier either,
that leaves you with Vista or the early-adopter editions of the
next Windows Server product.

TJG


From Frank.Aune at broadpark.no  Mon Oct 15 10:15:42 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Mon, 15 Oct 2007 16:15:42 +0200
Subject: python logging module and custom handler specified in config file
Message-ID: <200710151615.42554.Frank.Aune@broadpark.no>

Hello,

I've been playing with the python logging module lately, and I manage to log 
to both stderr and MySQL database. 

What I'm wondering, is if its possible to specify the database handler in a 
config file like:

[handler_database]
class=DBHandler
level=DEBUG
formatter=database
args=('localhost', uid='root')

I've seen the log_test14.py example bundled with logging module, which 
describes the DBHandler class and I can get it working if I attach this 
handler to the root logger inside my application, but I would really like to 
do it through a config file like above. But since the logging.handlers module 
does not know about the DBHandler class, obviously this does not work.

I was thinking perhaps specifying module and classname in the class= option 
above, like class=dbhandler.DBHandler, but it will just complain that 
name 'dbhandler' is not defined.

Is this possible to archieve somehow? 

Best regards,
Frank Aune


From bozonm at vscht.cz  Wed Oct 24 20:22:21 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Thu, 25 Oct 2007 02:22:21 +0200
Subject: [0..9] list (range) syntax
References: <pan.2007.10.24.22.44.28.712782@vscht.cz>
	<471fd26a$0$13110$9b4e6d93@newsspool2.arcor-online.net>
Message-ID: <pan.2007.10.25.00.22.21.1912@vscht.cz>

On Thu, 25 Oct 2007 01:16:57 +0200, Wildemar Wildenburger wrote:

> Michal Bozon wrote:
>> many Python newcomers are confused why
>> range(10), does not include 10.
>> 
> It produces a list of ten elements. Also the documentation is quite 
> clear on the topic. And lastly: This will probably really bother you for 
> a week, then no more.
> 
> 
>> If there was a proposal for the new
>> syntax for ranges, which is known
>> e.g. from Pascal or Ruby...
>> 
>>>>> [0..10]
>> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>> 
>> ...is there a chance to be approved ?
>> 
> Quite close to none. It is too much cosmetics and too little 
> enhancement. What would that make possible that is impossible by now or 
> what would that make easier that is really hard?
> 
> And if you really need something like that, write a function:
> 
> def fullrange(start, end):
>      r = range(start, end)
>      r.append(end)
>      return r
> 
> /W

This is something completely different.
The .. syntax was not meant only as something
which would include the last item,
but also/rather a range list syntactic shortcut:

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] -->
[0, 1, ... 9, 10] -->
[0..10]

 -m.


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct 31 18:38:40 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 31 Oct 2007 23:38:40 +0100
Subject: Print a list to a string?
In-Reply-To: <1193869068.254703.209450@y42g2000hsy.googlegroups.com>
References: <1193869068.254703.209450@y42g2000hsy.googlegroups.com>
Message-ID: <4729041c$0$5454$426a74cc@news.free.fr>

mrstephengross a ?crit :
> I would like to get the results of a print operation 

print is a statement, it doesn't yield any 'result'.

> placed in a
> string. For instance, you can very easily create a list and print it
> to stdout:
> 
>   x = [1,2,3]
>   print x # Will print [1,2,3]
> 
> What if I want the text "[1,2,3]" placed in a string? For instance,
> something like:
> 
>   x = [1,2,3]
>   str = ''

You're shadowing the builtin str type here.

>   print str x # x = '[1,2,3]'
 >
> Any ideas?

any of the following should do:

s = "%s" % x
s = repr(x)




From hat at se-162.se.wtb.tue.nl  Fri Oct 19 05:27:17 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Fri, 19 Oct 2007 11:27:17 +0200
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192687508.636842.49940@z24g2000prh.googlegroups.com>
	<1192751078.506979.170580@z24g2000prh.googlegroups.com>
	<1192780912.381140.101880@e34g2000pro.googlegroups.com>
Message-ID: <slrnfhgu3l.rae.hat@se-162.se.wtb.tue.nl>

On 2007-10-19, cokofreedom at gmail.com <cokofreedom at gmail.com> wrote:
> On Oct 19, 1:44 am, MRAB <goo... at mrabarnett.plus.com> wrote:
>> On Oct 18, 7:05 am, Michele Simionato <michele.simion... at gmail.com>
>>
>>     if number == 0:
>>         return "0"
>>
>
> Hey,
>
> Isn't
> if not number:
>   return "0"
>
> faster?

Depends on who is parsing it.

If a computer, possibly a few micro-seconds (if the Python byte-code generator
doesn't optimize it away).

If a human, then it is slower by at least a second.


Since I prefer to optimize on my time rather than CPU time, I'd prefer the
first version

Albert


From amjadcsu at gmail.com  Wed Oct 31 18:20:56 2007
From: amjadcsu at gmail.com (amjadcsu at gmail.com)
Date: 31 Oct 2007 15:20:56 -0700
Subject: capturing output of command line in an array
In-Reply-To: <mailman.699.1193846020.13605.python-list@python.org>
References: <1193842906.058058.29080@t8g2000prg.googlegroups.com>
	<mailman.699.1193846020.13605.python-list@python.org>
Message-ID: <1193847249.528264.270150@k35g2000prh.googlegroups.com>

Thanks Lee
I am looking to just get the node name from that info.
I dont need all other info
so my list would be just
alist=[node13,node12,node8,node1 ....]
is it possible??

On Oct 31, 9:44 am, Lee Capps <lca... at cteresource.org> wrote:
> On Oct 31, 2007, at 11:01 AM, amjad... at gmail.com wrote:
>
>
>
> > I am trying to execute a command using os.system. this command lists
> > the number of nodes alive in a cluster. I would like to capture the
> > output in list/array in python. IS it possible.?/
>
> > Here is my command
> >  gstat -a
> > node13     2 (    0/   56) [  0.00,  0.00,  0.00] [   0.0,   0.0,
> > 0.1,  99.9,   0.0] OFF
> > node12     2 (    1/   63) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.7,  49.8,   0.0] OFF
> > node8     2 (    1/   59) [  0.99,  0.97,  0.91] [  47.5,   0.0,
> > 2.8,  49.7,   0.0] OFF
> > node2     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node1     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node7     2 (    1/   58) [  0.99,  0.97,  0.91] [  49.8,   0.0,
> > 0.6,  49.7,   0.0] OFF
> > node11     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.8,  49.6,   0.0] OFF
> > node4     2 (    1/   59) [  1.00,  1.00,  0.93] [  46.6,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node10     2 (    1/   59) [  1.00,  1.00,  0.94] [  46.7,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node5     2 (    1/   59) [  1.00,  1.00,  0.92] [  49.8,   0.0,
> > 0.4,  49.7,   0.0] OFF
> > node6     2 (    1/   59) [  1.00,  1.00,  0.94] [  49.5,   0.0,
> > 0.9,  49.7,   0.0] OFF
>
> > I would like to have an array where each element contains the nodes
>
> > for example
> > a=[node13,node12,node2,node8,node1,node7,node 11]
>
> > any help would be appreciated
>
> You might try os.popen to read in the output of your command.
>
> It would be helpful to have more information about what you'd like to
> do with your list.  Do you just want to put the text of the
> individual node lines from gstat into the list?  If so, os.popen
> should work for you.  Or  do you need to parse the lines and store
> them in, say dictionaries?  Tuples?  If you need to parse it, you
> could use module re, or even just string methods, depending on what
> you're trying to do . . . .
>
> HTH,
>
> ---
> Lee Capps
> Technology Specialist
> CTE Resource Center
> lca... at cteresource.org




From sgeiger at ncee.net  Wed Oct 17 18:56:17 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Wed, 17 Oct 2007 17:56:17 -0500
Subject: Pull Last 3 Months
In-Reply-To: <47167F80.8080208@tim.thechases.com>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
Message-ID: <47169311.6080608@ncee.net>

A simpler way, imho:

import datetime
m = {
1:'Jan',2:'Feb',3:'Mar',4:'Apr',5:'May',6:'Jun',7:'Jul',8:'Aug',9:'Sep',10:'Oct',11:'Nov',12:'Dec'
}
month = datetime.date.today().month
if month == 1:
    ans = [m[11], m[12], m[1]]
elif month == 2:
    ans = [m[11], m[12], m[1]]
else:
    ans = [m[month-2], m[month-1], m[month]]
print ans


Tim Chase wrote:
>> Is there a module that can pull str values for say the last 3 months?
>> Something like:
>>
>> print lastMonths(3)
>>
>> ['Sep', 'Aug', 'Jul']
>>     
>
> I don't think there's anything inbuilt.  It's slightly 
> frustrating that timedelta doesn't accept a "months" parameter 
> when it would be rather helpful (but how many days are in a 
> month-delta is something that changes from month-to-month).
>
> It's somewhat inelegant, but this works for me:
>
>    import datetime
>
>    def last_months(months):
>      assert months > 0
>      d = datetime.date.today()
>      m = d.strftime('%b')
>      yield m
>      while months > 1:
>        d -= datetime.timedelta(days=28)
>        m2 = d.strftime('%b')
>        if m2 <> m:
>          m = m2
>          months -= 1
>          yield m
>
>    print list(last_months(3))
>    for month in last_months(24): print month
>
> The alternative would likely be to do something like subtract one 
> from the current month, and if it drops below 1, decrement the 
> year and reset the month to 12.  Equally fuzzy:
>
>    def lastN(months):
>      assert months > 0
>      d = datetime.date.today()
>      for _ in xrange(months):
>        yield d.strftime('%b')
>        y,m = d.year, d.month
>        if m > 1:
>          m -= 1
>        else:
>          m = 12
>          y -= 1
>        d = datetime.date(y,m,1)
>
> Use whichever you prefer.
>
> -tkc
>
>
>
>
>
>   

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

-------------- next part --------------
A non-text attachment was scrubbed...
Name: sgeiger.vcf
Type: text/x-vcard
Size: 310 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/29f569eb/attachment.vcf>

From mensanator at aol.com  Tue Oct 30 14:37:57 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 30 Oct 2007 11:37:57 -0700
Subject: Iteration for Factorials
In-Reply-To: <mailman.649.1193757936.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<47271f3e$1_3@news.bluewin.ch>
	<mailman.649.1193757936.13605.python-list@python.org>
Message-ID: <1193769477.956629.232940@o38g2000hse.googlegroups.com>

On Oct 30, 10:25 am, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> On Tue, Oct 30, 2007 at 01:09:38PM +0100, Boris Borcic wrote regarding Re: Iteration for Factorials:
>
>
>
> > Py-Fun wrote:
> > > I'm stuck trying to write a function that generates a factorial of a
> > > number using iteration and not recursion.  Any simple ideas would be
> > > appreciated.
>
> > fact = lambda n : len(map([1].__imul__,range(1,n+1))[0])
>
> OK.  Now I've been sucked in.  How about this:
>
> def fact(x):
>         def f(x):
>                 if int(x) != x:
>                         raise ValueError
>                 elif x > 1:
>                         return f(x-1) ** x
>                 elif x == 1:
>                         return 10
>                 else:
>                         raise ValueError
>         return len(str(f(x))) -1
>
> The great part about this recursive solution is that you don't have to worry about the stack limit because performance degrades so quickly on the conversion to string!  fact(8) takes a little less than a second, fact(9) takes about a minute, and fact(10) takes more time than I had patience to wait for!

And the not-so-great part is that it raises an exception
on fact(0) which makes it utterly useless for calculating
combinations of m things taken n at a time: m!/n!*(m-n)!

Why is it that no one seems able to get this right?

>
> Cheers,
> Cliff




From alan.haffner at gmail.com  Thu Oct 11 01:10:11 2007
From: alan.haffner at gmail.com (alan.haffner at gmail.com)
Date: Wed, 10 Oct 2007 22:10:11 -0700
Subject: Can I overload the compare (cmp()) function for a Lists ([])
	index function?
In-Reply-To: <87tzpel47r.fsf@mulj.homelinux.net>
References: <1191000652.430036.288400@y42g2000hsy.googlegroups.com>
	<87tzpel47r.fsf@mulj.homelinux.net>
Message-ID: <1192079411.662956.267200@k79g2000hse.googlegroups.com>

On Sep 28, 5:12 pm, Hrvoje Niksic <hnik... at xemacs.org> wrote:
> xkenneth <xkenn... at gmail.com> writes:
> > Looking to do something similair. I'm working with alot of timestamps
> > and if they're within a couple seconds I need them to be indexed and
> > removed from a list.
> > Is there any possible way to index with a custom cmp() function?
>
> > I assume it would be something like...
>
> > list.index(something,mycmp)
>
> The obvious option is reimplementing the functionality of index as an
> explicit loop, such as:
>
> def myindex(lst, something, mycmp):
>     for i, el in enumerate(lst):
>         if mycmp(el, something) == 0:
>             return i
>     raise ValueError("element not in list")
>
> Looping in Python is slower than looping in C, but since you're
> calling a Python function per element anyway, the loop overhead might
> be negligible.
>
> A more imaginative way is to take advantage of the fact that index
> uses the '==' operator to look for the item.  You can create an object
> whose == operator calls your comparison function and use that object
> as the argument to list.index:
>
> class Cmp(object):
>     def __init__(self, item, cmpfun):
>         self.item = item
>         self.cmpfun = cmpfun
>     def __eq__(self, other):
>         return self.cmpfun(self.item, other) == 0
>
> # list.index(Cmp(something, mycmp))
>
> For example:
>
> >>> def mycmp(s1, s2):
>
> ...   return cmp(s1.tolower(), s2.tolower())>>> ['foo', 'bar', 'baz'].index(Cmp('bar', mycmp))
> 1
> >>> ['foo', 'bar', 'baz'].index(Cmp('Bar', mycmp))
> 1
> >>> ['foo', 'bar', 'baz'].index(Cmp('nosuchelement', mycmp))
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ValueError: list.index(x): x not in list
>
> The timeit module shows, somewhat surprisingly, that the first method
> is ~1.5 times faster, even for larger lists.

Hrvoje,

   That's fun! thx.

 --Alan

the cut-n-paste version /w minor fix to 'lower'.
# ----------------------------------------------
class Cmp(object):
    def __init__(self, item, cmpfun):
        self.item = item
        self.cmpfun = cmpfun
    def __eq__(self, other):
        return self.cmpfun(self.item, other) == 0


def mycmp(s1, s2):
    return cmp(s1.lower(), s2.lower())


print ['foo', 'bar', 'baz'].index(Cmp('bar', mycmp))
print ['foo', 'bar', 'baz'].index(Cmp('Bar', mycmp))
try:
    print ['foo', 'bar', 'baz'].index(Cmp('nosuchelement', mycmp))
except ValueError:
    print "Search String not found!"

# end example



From george.smith78 at gmail.com  Fri Oct 12 02:53:54 2007
From: george.smith78 at gmail.com (george.smith78 at gmail.com)
Date: Fri, 12 Oct 2007 06:53:54 -0000
Subject: Top 10 Caribbean island destinations
In-Reply-To: <13gtn5go9k25p56@news.supernews.com>
References: <1192137188.121863.212020@19g2000hsx.googlegroups.com>
	<470ed8b0$0$24257$4c368faf@roadrunner.com>
	<13gtn5go9k25p56@news.supernews.com>
Message-ID: <1192172034.949885.180230@v23g2000prn.googlegroups.com>

lol :) another one on baseball : 90% of the game is physical, the
other half is mental.

GS
george.smith78 at gmail.com

On Oct 11, 7:32 pm, willshak <wills... at 00hvc.rr.com> wrote:
> on 10/11/2007 10:14 PM Audio expert said the following:
>
> > Now I know where NOT to go.
> > TOO crowded for me.
>
> No one goes there anymore. It's too crowded.
> Lawrence "Yogi" Berra
>
>
>
> > <arturkl... at gmail.com> wrote in message
> >news:1192137188.121863.212020 at 19g2000hsx.googlegroups.com...
>
> >> See the most popular Caribbean island destinations
>
> >>http://tropical-destinations.blogspot.com/
>
> --
>
> Bill
> In Hamptonburgh, NY
> To email, remove the double zeroes after @




From ricaraoz at gmail.com  Mon Oct 29 18:51:10 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Mon, 29 Oct 2007 19:51:10 -0300
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <20071029102729.9A2241E4012@bag.python.org>
References: <20071029102729.9A2241E4012@bag.python.org>
Message-ID: <472663DE.5000300@bigfoot.com>

Dick Moores wrote:
> Windows XP Pro, Python 2.5.1
> 
> import msvcrt
> while True:
>      if msvcrt.kbhit():
>          key = msvcrt.getch()
>          if key == 'Enter'
> 	 do something
> 
> Is there a way to catch the pressing of the 'Enter' key?
> 
> Thanks,
> 
> Dick Moores
> 

You have examples for this in http://effbot.org/librarybook/msvcrt.htm

HTH




From george.sakkis at gmail.com  Mon Oct 29 22:50:14 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Mon, 29 Oct 2007 19:50:14 -0700
Subject: A Python 3000 Question
In-Reply-To: <mailman.607.1193694615.13605.python-list@python.org>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.607.1193694615.13605.python-list@python.org>
Message-ID: <1193712614.592262.114790@e34g2000pro.googlegroups.com>

On Oct 29, 5:49 pm, "Terry Reedy" <tjre... at udel.edu> wrote:

>  I was just reading
> |http://docs.python.org/dev/3.0/whatsnew/3.0.html
>
> which says nothing about such a change, except for one in the opposite
> direction: o.next() changes to next(o) which in turn calls o.__next__(),
> just as len(o) calls o.__len__()

Ugh. A great example of complexification (if there's such a word).

> | why not a_string.len()?
>
> You are free to bypass builtins and call methods directly if you like:
> a_string.__len__().
>
> But consider rewriting the following:
>
> def table(func, seq):
>     return zip(seq, map(func,seq))
>
> table(len, ('', (), []))

table(lambda x:x.__len__(), ('',[],()))

What was the point again ?

> If you *really* want to be super-OO, like functionless OO languages, you
> can also call methods instead of using operator symbols, which in effect
> are names of builtin functions.
>
> Instead of a+b, write a.__add__(b).  And so on.

True, if ones wants to go all the way to, say, Java. Operator
overriding though is pretty handy in terms of syntax sugar to give up,
especially for expressions that are identical or strongly similar from
a familiar context (e.g. maths). This cannot be claimed about len()
though. My main problem with len() is not so much the function/method
inconsistency, but rather that it doesn't apply to all (or even most)
objects. I am much less against, say, getattr(), being a function
since it makes sense for all objects. But why len()? At best it's a
subjective judgment call of where to draw the line, at worst it's
plain inconsistent.

And while we're at it, what's the rationale of len() insisting that
the return value is >=0 ? That also looks odd in a dynamic language
with a "we're all adults here" philosophy and much less hand-holding
in areas that matter more (e.g. allowed by default comparisons between
instances of different types - at least that's one of the warts Python
3 gets right).

George



From stef.mientki at gmail.com  Sun Oct 28 12:17:11 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sun, 28 Oct 2007 17:17:11 +0100
Subject: how to convert tuple to a "list of single values" ?
In-Reply-To: <Xns99D7A145D60C7duncanbooth@127.0.0.1>
References: <mailman.536.1193585479.13605.python-list@python.org>
	<Xns99D7A145D60C7duncanbooth@127.0.0.1>
Message-ID: <4724B607.3070805@gmail.com>

thanks Duncan, Matthieu and Ed (offlist),
this is exactly what I was looking for.

cheers,
Stef

Duncan Booth wrote:
> stef mientki <stef.mientki at gmail.com> wrote:
>
>   
>> hello,
>>
>> The next piece of code bothers me:
>>
>>       ptx, pty, rectWidth, rectHeight = self._point2ClientCoord (p1, p2 )
>>       dc.SetClippingRegion ( ptx, pty, rectWidth, rectHeight )
>>
>> Because I want to write it in 1 line,
>> and without the use of intermediate variables (for which I have to 
>> invent names ;-)
>> like this:
>>
>>     dc.SetClippingRegion ( self._point2ClientCoord (p1, p2 ) )
>>     
> Try:
>    dc.SetClippingRegion ( *self._point2ClientCoord (p1, p2 ) )
>   



From Afro.Systems at gmail.com  Wed Oct  3 03:28:17 2007
From: Afro.Systems at gmail.com (Tzury)
Date: Wed, 03 Oct 2007 00:28:17 -0700
Subject: Having fun with python
Message-ID: <1191396497.374407.262600@y42g2000hsy.googlegroups.com>

    def loadResMap(self):
        self.resMap = []
        [[self.resMap.append(str('A2' + sim[0] + '/r' + str(x)))
            for x in range(1, eval(sim[1])+1)]
                for sim in [x.split(':')
                    for x in quickViews.smsResList.v.split(",")]]
        '''
        # Confused? Have this one:

        data = quickViews.smsResList.v
        sims, slots = [], data.split(",")
        for slot in slots:
            sims.append(slot.split(':'))
        for sim in sims:
            for x in range(1, eval(sim[1])+1):
                self.resMap.append(str('A2' + sim[0] + '/r' +
str(x)))

        # same functionality different approaches
        # forloops vs. list comprehension
        # redability vs. smartassicity
        # AKA: You have read too many Lisp books
        '''



From MrJean1 at gmail.com  Tue Oct 30 01:36:03 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Tue, 30 Oct 2007 05:36:03 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193722194.676321.46070@k35g2000prh.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
	<1193684775.643350.208230@y27g2000pre.googlegroups.com>
	<1193717706.876266.78150@v23g2000prn.googlegroups.com>
	<1193722194.676321.46070@k35g2000prh.googlegroups.com>
Message-ID: <1193722563.438198.140930@e34g2000pro.googlegroups.com>

Correction: the number of tests which pass must be 276.

/Jean Brouwers


On Oct 29, 10:29 pm, MrJean1 <MrJe... at gmail.com> wrote:
> Here is a better way to build Python on Solaris, both 32- and 64-
> bit.
>
>  <http://ccnuma.anu.edu.au/~wpc/blog/programming/building-python.html>
>
> since it builds both the binary and make test on my Ultra 20 machine.
> In my case 26 tests pass, 1 failed, 44 are skipped and there are 6 u
> expected skips.  The latter are expected and due to missing packages,
> like Tcl.
>
> Use the instructions from this site and forget mine.  But it may still
> be necessary to patch the ./Include/pyport.h file as shown in my
> previous message.
>
> /Jean Brouwers
>
> On Oct 29, 9:15 pm, MrJean1 <MrJe... at gmail.com> wrote:
>
> > Here is one way to build a 64-bit Python binary on Solaris 10 using
> > SUN's compilers**.  This is probably not the recommended procedure but
> > it does create a partial, expected result.
>
> > Here are the 4 steps I used:
>
> > 1 - Run  ./configure --without-gcc  --with-cxx-main=CC  --enable-64-
> > bit  ....
>
> > 2 - Edit the generated Makefile and change 3 lines
>
> >     CC     = cc -xtarget=opteron -xarch=amd64
> >     CXX    = CC -xtarget=opteron -xarch=amd64
> >     MAINCC = CC -xtarget=opteron -xarch=amd64
>
> >     The -xtarget and -xarch flags must be adjusted for UltraSparc.
>
> > 3 - Edit python source file ./Include/pyport.h before line 728 (in
> > Python 2.5.1) as follows.
>
> >     Add these 3 lines:
>
> >     #ifndef __GNUC__  /* non-GNU C/C++, like SUN */
> >     # undef LONG_BIT
> >     #endif
>
> >     such that LONG_BIT is #define'd next
>
> >     #ifndef LONG_BIT
> >     #define LONG_BIT (8 * SIZEOF_LONG)
> >     #endif
>
> >     before this error message can occur
>
> >     #if LONG_BIT != 8 * SIZEOF_LONG
> >     /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some
> > recent
> >      * 32-bit platforms using gcc.  We try to catch that here at
> > compile-time
> >      * rather than waiting for integer multiplication to trigger bogus
> >      * overflows.
> >      */
> >     #error "LONG_BIT definition appears wrong for platform (bad gcc/
> > glibc config?)."
> >     #endif
>
> > 4 - Run make and check the resulting Python binary with  file ./
> > python.
>
> > However, make test still fails and that will require further
> > investigation.
>
> > /Jean Brouwers
>
> > **) Sun C/C++ 5.8 2005/10/14 on an Ultra 20 Opteron machine
>
> > On Oct 29, 12:06 pm, MrJean1 <MrJe... at gmail.com> wrote:> Building 64-bit Python is still elusive. I tried various ways to add  -
> > > xtarget=opteron -xarch-amd64  to the C/C++ flags but that still fails
> > > to produce a 64-bit build.  Changing the Makefile is not sufficient
> > > since that causes compilation errors.
>
> > > It looks like the ./configure command must run with those additional
> > > flags.  Passing the flags in environment variables defining CC and CXX
> > > only works for CXX.  The additional flags do not appear on the C
> > > compiler command lines.
>
> > > /Jean Brouwers
>
> > > On Oct 28, 11:03 pm, plumb and tree <plumbandt... at gmail.com> wrote:
>
> > .....




From noroi at eden.rutgers.edu  Thu Oct 18 16:45:52 2007
From: noroi at eden.rutgers.edu (noroi)
Date: Thu, 18 Oct 2007 13:45:52 -0700 (PDT)
Subject: AttributeError - FM Receiver - Intermediate freq.
Message-ID: <13283346.post@talk.nabble.com>


Hi, 

   I got problems while running Eric Blossom's FM receiver's example codes
from the GNURadio tutorial page; the RF front end reads the signal input
from daughter board, and when the compiler tried to call mothods to set
values for IF and gain, such as set_AGC(), get_output_freq(), etc... it
seems not able to find those methods/ functions... Could someone be kind
enough to give me some pointers for solving such errors? 


Traceback (most recent call last): 
  
  File "./nuradio.py", line 91, in __init__ 
    IF_freq = rf_front_end.get_output_freq ()  
  File "/usr/local/lib/python2.4/site-packages/gnuradio/usrp.py", line 181,
in __getattr__ 
    return getattr(self._u, name) 
AttributeError: 'usrp1_source_c_sptr' object has no attribute
'get_output_freq' 

ps. link for the full script is as below: 
http://www.gnu.org/software/gnuradio/doc/exploring-gnuradio.html#fm-receiver 

Best, 
  
              eric
-- 
View this message in context: http://www.nabble.com/AttributeError---FM-Receiver---Intermediate-freq.-tf4649640.html#a13283346
Sent from the Python - python-list mailing list archive at Nabble.com.



From khemkaamit at gmail.com  Wed Oct 24 03:01:34 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Wed, 24 Oct 2007 12:31:34 +0530
Subject: Lists and Sublists
In-Reply-To: <471e740e$0$20686$426a74cc@news.free.fr>
References: <1193175869.803399.43650@y27g2000pre.googlegroups.com>
	<471e740e$0$20686$426a74cc@news.free.fr>
Message-ID: <1360b7230710240001u5c45a18dxad505564b69d34e5@mail.gmail.com>

On 10/24/07, Bruno Desthuilliers
<bdesth.quelquechose at free.quelquepart.fr> wrote:
> dineshv a ?crit :
> > We have a list of N (>2,000) keywords (of datatype string).  Each of
> > the N keywords has associated with it a list of names of varying
> > numbers.  For example, keyword(1) will have a list of L1 names
> > associated with it, keyword(2) will have a list of L2 names associated
> > with it and so on with L1 not equal to L2 etc.  All keywords and names
> > are immutable.
> >
> > Given a keyword(n) , we want to get hold of the associated list of Ln
> > names.
> >
> > At anytime, we also want to add keywords to the list of N keywords,
> > and to any of the associated Ln lists - both of which will grow to
> > very large sizes.
> >
> > The data will be read into the Python data structure(s) from disk
> > storage.
> >
> > I am struggling to work out what is the ideal Python data structure
> > for the above.  Any help would be greatly appreciated.
>
> keywords = {}
> keywords['python'] = ['fun', 'simple']
> keywords['another_p_language'] = ['line noise', 'cryptic']
> keywords['python'].append('readable')
>

To add you may want to have a look at "shelve" module , in case you
want to store this object to a file. It can be useful if the data set
is large and does not change frequently and you would want to save on
some startup time .

cheers,

-- 
--
Amit Khemka


From shaileshk at gmail.com  Sat Oct 13 00:01:53 2007
From: shaileshk at gmail.com (shailesh)
Date: Fri, 12 Oct 2007 21:01:53 -0700
Subject: Creating a custom python python distribution
In-Reply-To: <1191353605.465559.212710@n39g2000hsh.googlegroups.com>
References: <1191208680.221428.11880@50g2000hsm.googlegroups.com>
	<47028b97$0$4524$9b4e6d93@newsspool3.arcor-online.net>
	<1191353605.465559.212710@n39g2000hsh.googlegroups.com>
Message-ID: <1192248113.764654.222880@e9g2000prf.googlegroups.com>

Thanx a lot for all the pointers. I will certainly check into them.

I actually wanted to know how do people create their own Python
distribution like ASPN's Python or Enthought's Python.

With regards,
- Shailesh


On Oct 2, 12:33 pm, azrael <jura.gro... at gmail.com> wrote:
> Maybe you should check the Slax distro. Go towww.slax.org.
> There is one special slax distro caled Frodo. I think that it includes
> nearly nothing but the core.
> There are also several packages for the distro that you can put inside
> the distro and create your own distribution. There are also detailed
> instructions. This way you can create a Live distro, but there are
> also instruction on how to install it on the HDD.
>
> If I understood your question then I guess that this should be the
> answer.
>
> best regards




From larry.bates at websafe.com  Thu Oct  4 13:28:34 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 04 Oct 2007 12:28:34 -0500
Subject: Import PY file not included in py2exe executable
In-Reply-To: <1191518159.408503.258070@19g2000hsx.googlegroups.com>
References: <1191518159.408503.258070@19g2000hsx.googlegroups.com>
Message-ID: <x56dnep9srNsv5janZ2dnUVZ_h-vnZ2d@comcast.com>

ward.david at comcast.net wrote:
> I am using py2exe to generate an executable so that I can deliver my
> scripts as a EXE. I have a couple of file that are needed by the
> program that I do not want to include in the EXE because they are used
> for program configuration (similar to the way an INI file is used.)
> These file may change per installation, so I may need to edit them.
> Having them wrapped up in the EXE just won't work for my needs.
> 
> I've used the 'exclude' option to keep them from being included in the
> EXE. I'm also using 'zipfile=None' so that all of the other pys are
> included in the EXE. So, when I deliver the EXE all I should have in
> my installation directory is:
> 
> MyProgram.exe
> config1.py
> config2.py
> <misc Python pyds>
> 
> Is this possible? What is the setup.py configuration for this?
> 
I've found that using Inno Installer to package all the "other" stuff that I 
need works EXTREMELY well.  I almost always need .INI file, HISTORY.TXT, 
README.TXT, icons, etc.  Inno also allows me to ship a single setup.exe file 
that can install my program, make registry entries (if needed), create 
shortcuts, etc.  The time I spend installing and learning Inno has paid for 
itself many times over.

FYI, Larry


From duncan.booth at invalid.invalid  Wed Oct 31 10:45:59 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 31 Oct 2007 14:45:59 GMT
Subject: A Python 3000 Question
References: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<mailman.653.1193760145.13605.python-list@python.org>
	<slrnfigtq9.1mk.horpner@FIAD06.norwich.edu>
	<Xns99DA8CAD0B7E2duncanbooth@127.0.0.1>
	<slrnfih3eo.1dc.horpner@FIAD06.norwich.edu>
Message-ID: <Xns99DA9633528E5duncanbooth@127.0.0.1>

Neil Cerutti <horpner at yahoo.com> wrote:

> On 2007-10-31, Duncan Booth <duncan.booth at invalid.invalid> wrote:
>> Obviously it isn't an absolute thing: lists and dictionaries do
>> have other methods in the user namespace, so the decision to
>> keep len out of that namespace is partly a judgement call, and
>> partly historical (I think tuples didn't used to have any
>> methods at all).
> 
> Thanks for the interesting note. I didn't know that tuples
> originally had no methods. That made len mandatory, I suppose.
> 
Only if you think tuples are a sequence rather than a record. :)

Come to think of it, strings didn't have methods either, so len needed to 
be a function to get the length of a string.

I'm not sure when tuples sprouted methods. Strings grew methods in 1.6, but 
I think numbers and tuples may not have got any methods until the 
introduction of new-style classes (Python 2.2)


From steve at REMOVE-THIS-cybersource.com.au  Tue Oct  9 09:39:51 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 09 Oct 2007 13:39:51 -0000
Subject: Drop folder and race conditions
References: <e4WdnerJMt0885banZ2dnUVZ_t2inZ2d@comcast.com>
Message-ID: <13gn15748if0aab@corp.supernews.com>

On Tue, 09 Oct 2007 07:05:57 -0500, Larry Bates wrote:

> I have a need to implement a drop folder upload mechanism for secure
> uploading of files to a server.  At first glance this appears that it
> would be an easy application to write.  Then I begin to think about the
> race conditions that exist between the process that will wake up to
> upload the files and the fact that the user can add additional files to
> the drop folder at any point in time. I would like to clear out
> files/folders after they have been processed but it is possible that
> while the background process was uploading files, the user added
> additional files/folders to the drop folder that make the deletion of
> folders impossible.  This project has become significantly more complex
> than it appeared at first.  Anyone out there have any "sage" advice on
> how to tackle this beast?


Off the top of my head...

Recursively copy the contents of each folder to the server, deepest 
first, deleting each file as it's copied. Then delete the folder as soon 
as you've emptied it (but naturally not the top-level drop folder). If it 
happens to *not* be empty (because the user has added additional files to 
it), just catch the error and ignore it. In another few minutes, you'll 
try again, copying the newly added files and then delete the folder.

Because each file is being deleted as soon as it is copied, you'll won't 
build up an ever-increasing collection of files. At worst, you may have a 
collection of folders -- but unless you're fighting a hostile process 
that can add folders quicker than you can delete them, you'll eventually 
win.

Maybe you need a heuristic that says "if the number of 'directory not 
empty' errors keeps increasing, assume we're dealing with a hostile 
process and take extra steps". Say, lock the drop folder for five minutes 
while you flush it.

Another possibility is that before you start copying from the folders, 
you change their permissions to prohibit the user adding extra files into 
them. That way, nothing can be added to them once you start copying, and 
you can be sure that you can delete them once empty.


-- 
Steven


From bdesth.quelquechose at free.quelquepart.fr  Fri Oct 19 16:55:37 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 19 Oct 2007 22:55:37 +0200
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <mailman.220.1192811880.13605.python-list@python.org>
References: <mailman.201.1192778546.13605.python-list@python.org>	<1192779222.618164.321910@y27g2000pre.googlegroups.com>	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>	<13hhicd14jrt5e3@corp.supernews.com>
	<mailman.220.1192811880.13605.python-list@python.org>
Message-ID: <471919fe$0$26744$426a74cc@news.free.fr>

stef mientki a ?crit :
> Steven D'Aprano wrote:
> 
>> On Fri, 19 Oct 2007 16:19:32 +0200, stef wrote:
>>
>>  
>>
>>> Well I'm not collecting data, I'm collecting pointers to data.
>>>     
>>
>>
>> I beg to differ, you're collecting data. How that data is to be 
>> interpreted (a string, a number, a pointer...) is a separate issue.
>>
>>
>>  
>>
>>> This
>>> program simulates a user written program in JAL. As Python doesn't
>>> support pointers, instead I collect names.
>>>     
>>
>>
>> This doesn't make any sense to me. If your user-written program is 
>> supplying pointers (that is, memory addresses like 0x15A8), how do you 
>> get a name from the memory address?
>>
>>
>> If you are trying to emulate pointer-manipulation, then the usual way 
>> to simulate a pointer is with an integer offset into an array:
>>
>> # initialise your memory space to all zeroes:
>> memory = [chr(0)]*1024*64  # 64K of memory space, enough for anyone
>> NULL = 0
>> pointer = 45
>> memory[pointer:pointer + 5] = 'HELLO'
>> pointer += 6
>> memory[pointer:pointer + 5] = 'WORLD'
>>
>>
>>   
> 
> If there is a better way, I'ld like to hear it.
> I understand that execute is dangerous.
> 
> I don't have pointers, I've just names (at least I think).
> Let me explain a little bit more,
> I want to simulate / debug a user program,
> the user program might look like this:
> 
>   x = 5
>   for i in xrange(10):
>       x = x + 1
> 
> So now I want to follow the changes in "x" and "i",
> therefor in the background I change the user program a little bit, like 
> this
> 
> def user_program():
>   x = 5    ; _debug(2)
>   global x,i
>   _debug (3)
>   for i in xrange(10):
>       _debug (3)
>       x = x + 1    ; _debug (4)

You do know that Python exposes all of it's compilation / AST / whatever 
machinery, don't you ? IOW, you can take a textual program, compile it 
to a code object, play with the AST, add debug hooks, etc... Perhaps you 
should spend a little more time studying the modules index ?


From exarkun at divmod.com  Tue Oct  9 07:47:55 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 9 Oct 2007 07:47:55 -0400
Subject: Python + Shoutpy + Twisted Locks
In-Reply-To: <yEyOi.5243$4V6.5178@newssvr14.news.prodigy.net>
Message-ID: <20071009114755.8162.460525618.divmod.quotient.20476@ohm>

On Mon, 08 Oct 2007 23:00:46 GMT, John Nagle <nagle at animats.com> wrote:
>Chris Mellon wrote:
>> On 10/7/07, Michel Albert <exhuma at gmail.com> wrote:
>>> On Oct 6, 4:21 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar> wrote:
>>>> En Fri, 05 Oct 2007 04:55:55 -0300, exhuma.twn <exh... at gmail.com> escribi?:
>>>>
>>>>> [...] What I found
>>>>> is that "libshout" is blocking, which should be fine as the whole
>>>>> thing runs in it's separate thread. But the application hangs
>>>>> nevertheless while streaming. This effectively blocks out the other
>>>>> thread that checks the player status, which then fails to append new
>>>>> songs to the queue. So only one song is played when streaming.
>>>>> The other threads in my application run fine and don't block the rest
>>>>> of the app. So I guess, that the main problem is that blocking occurs
>>>>> "outside" the python world and "inside" the libshout world.
>>>> Only one thread at a time may be executing Python code; the Global
>>>> Interpreter Lock (GIL) ensures the mutual exclusion. Extension modules
>>>> (written in C) may use the macros
>>>> Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS to release/acquire the GIL
>>>> before/after an external blocking call.
>>>> I don't know libshout, or how you are doing the binding python-libshout,
>>>> but if your analysis is correct it means that the code is not releasing
>>>> the GIL at the appropiate points.
>>>>
>>>> --
>>>> Gabriel Genellina
>>> Hmmm... ok. I suppose rewriting the whole thing using twisted's
>>> deferreds could then solve the problem. Which are basically nothing
>>> more than callbacks with a weird name ;) Unfortunately this means that
>>> I have to re-think a lot. But in the end I suppose it will pay off.
>>>
>>> Thanks for taking the time and reading my little essay Gabriel ;)
>>>
>>
>> Using Twisted won't help if the libshout calls are really blocking the
>> main thread.
>
>     Right.
>
>     The whole point of Twisted is that you can't do anything that takes
>very long in a Twisted thread, or the whole server will stall.  If you
>try to do something ongoing, like streaming, in a Twisted server, you
>have to have long-running threads of your own and a scheduling system
>to coordinate them with the Twisted threads.

Except, of course, that there isn't any such thing as a "Twisted thread". :)

Jean-Paul


From jzgoda at o2.usun.pl  Wed Oct  3 03:46:53 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Wed, 03 Oct 2007 09:46:53 +0200
Subject: Django for database driven web application is OK?
In-Reply-To: <mailman.1419.1191370572.2658.python-list@python.org>
References: <mailman.1419.1191370572.2658.python-list@python.org>
Message-ID: <fdvhf8$kth$1@atlantis.news.tpi.pl>

cuongvt napisa?(a):

> I'm new to both Django and Python. I'm mainly developing on PHP. 
> I tend to move to Django. But I want to confirm as below: 
> I heard that Django is mainly used for something like content management,
> CMS or something 
> like that and Rails is mainly for web applications. 
> So my question: is it true or not? 
> For rapid web application development, can I use Django to create intranet
> database web driven 
> application in my company for example: empoyees time management, goods
> import/export management, 
> salary management etc? 

No. Yes. I mean, Django is good in building CMS-like apps but is not a
framework for building CMS-like apps. For example, the largest community
site in Poland http://grono.net/ is built with Django. My company does
other interesting things in Django, completely unrelated to CMS/web
publishing.

-- 
Jarek Zgoda
Skype: jzgoda | GTalk: zgoda at jabber.aster.pl | voice: +48228430101

"We read Knuth so you don't have to." (Tim Peters)


From darklord at timehorse.com  Tue Oct 23 13:08:19 2007
From: darklord at timehorse.com (TimeHorse)
Date: Tue, 23 Oct 2007 10:08:19 -0700
Subject: New module for method level access modifiers
Message-ID: <1193159299.190539.136450@z24g2000prh.googlegroups.com>

I have started work on a new module that would allow the decoration of
class methods to restrict access based on calling context.
Specifically, I have created 3 decorators named public, private and
protected.

These modifiers work as follows:

Private: A private method can only be called from a method defined in
the same class as the called method.

Protected: A protected method can only be called from a method defined
in the same or class derived from the called method's class.

Public: No access restrictions (essentially a no-op).

Programmers with a C++ or Java background will be familiar with these
concepts in those languages; these decorators attempt to emulate their
behavior

Bugs:

1)	These decorators will not tolerate other decorators because they
examine the call stack in order to determine the caller's frame.  A
second decorator, either before or after the access decorator will
insert a stack frame, which the current version of these decorators
cannot handle.  Making sure decorators set their wrapper functions
__name__, __doc__ and append to its dictionary would be required at
least for interoperability.

2)	As noted, staticmethod and classmethod cannot be handled by the
access decorators, not only because they are decorators themselves,
but because the current access decorators require access to an
instance of the class (self) in order to do method resolution.
classmethod support could probably be added without too much
difficulty but staticmethods, because they have no self or cls, would
be difficult.

3)	Friend classes, as defined in C++.  These would probably be defined
as a class-level list of classes that may have private/protected
access to the given class's internals.  This should not be too hard to
add.

4)	Decorators for member variables -- these decorators can already be
applied to get_* and set_* methods for properties.  Overriding
__getattr__ may be a better solution for attribute access, however.

Source available at: http://starship.python.net/crew/timehorse/access.py

Jeffrey



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 31 18:29:13 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 31 Oct 2007 22:29:13 -0000
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
	<1193842798.085242.22690@t8g2000prg.googlegroups.com>
Message-ID: <13ii0dpq86mhhfc@corp.supernews.com>

On Wed, 31 Oct 2007 07:59:58 -0700, Carl Banks wrote:

> Python considers len to be an operator for all intents and purposes.
> Python chose to spell this operator like a regular function, but it
> could easily have given a special syntax to the length operation (for
> instance, $#x).

I hope you're not serious that $# would make a good operator. Apart from 
conflicting with the comment marker, it is u-g-l-y.

That's the problem with operators... all the good ones are taken.


> Do you think that, if the length operation had its own syntax, people
> would be saying "No, length shouldn't be an operator, it should be a
> method"?  I don't think so; length is a fundamental and ubiquitous
> operation and it wouldn't be unreasonable to give it its own syntax.

I think they would.

You seem to have missed the context of the thread. The Original Poster 
was complaining that len() should be a method, because that is more 
purely Object Oriented.

If len() were an operator, that too would be a compromise to the ideal of 
"every function is an object method". I'm sure there are OO fan[atic]s 
who dislike operators too.



-- 
Steven.


From arnodel at googlemail.com  Mon Oct  1 12:09:21 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Mon, 01 Oct 2007 09:09:21 -0700
Subject: Using fractions instead of floats
In-Reply-To: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
Message-ID: <1191254961.729631.256760@22g2000hsm.googlegroups.com>

On Oct 1, 2:35 am, andresj <andres.j.... at gmail.com> wrote:

[snip Rational numbers in Python]

> I would like to get some feedback on this idea. Has this been posted
> before? If so, was it rejected? and for what?
> Also, I would like to know if you have improvements on the initial
> design, and if it would be appropiate to send it as a PEP.

As pointed out by others, implementations of rationals in Python
abound. Whereas there is a canonical representation of floats and ints
(and even longints) in the machine, it is not the case for rationals.
Moreover most programming tasks do not need rationals, so why burden
the language with them? If one needs them, there are perfectly
adequate modules to import (even though I, like many others I suspect,
have my own implementation in pure Python).  Finally, arithmetic would
become very confusing if there were three distinct numeric types; it
already causes enough confusion with two!

--
Arnaud




From seandavi at gmail.com  Thu Oct 11 17:38:51 2007
From: seandavi at gmail.com (Sean Davis)
Date: Thu, 11 Oct 2007 21:38:51 -0000
Subject: Web Ontology Language (OWL) parsing
Message-ID: <1192138731.912438.139580@o3g2000hsb.googlegroups.com>

I would like to parse some OWL files, but I haven't dealt with OWL in
python or any other language for that matter.  Some quick google
searches do not turn up much in the way of possibilities for doing so
in python.  Any suggestions of available code or using existing
libraries for doing so?

Thanks,
Sean



From bignose+hates-spam at benfinney.id.au  Wed Oct 17 19:53:22 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 18 Oct 2007 09:53:22 +1000
Subject: if instance exists problem ..
References: <mailman.142.1192660790.13605.python-list@python.org>
	<5nnj7qFjae1oU1@mid.uni-berlin.de>
Message-ID: <874pgp1eod.fsf@benfinney.id.au>

"Diez B. Roggisch" <deets at nospam.web.de> writes:

> stef mientki schrieb:
> > What should I do to the same simple test for existance ?
> 
> Use isinstance(obj, type).

No, that's *far* more specific than "does it exist", and will give
false negatives.

Much better is::

    foo = None
    foo = do_something_to_get_instance()
    # ...
    if foo is not None:
        # foo was bound to an instance correctly

Even better is just to use the object, and if it's not what was
expected, catch the exception at a level that knows what to do about
it.

-- 
 \      "At my lemonade stand I used to give the first glass away free |
  `\          and charge five dollars for the second glass. The refill |
_o__)                         contained the antidote."  -- Emo Philips |
Ben Finney


From w.greg.phillips at gmail.com  Sun Oct 14 20:33:25 2007
From: w.greg.phillips at gmail.com (w.greg.phillips at gmail.com)
Date: Sun, 14 Oct 2007 17:33:25 -0700
Subject: Python on imac
In-Reply-To: <8ocQi.24253$054.21605@newsfe14.phx>
References: <8ocQi.24253$054.21605@newsfe14.phx>
Message-ID: <1192408405.004630.248440@i38g2000prf.googlegroups.com>

On Oct 13, 7:21 pm, John Velman <vel... at cox.net> wrote:
> I'm considering moving from Linux to imac.   I've recently returned to
> Python (was never very expert) to develop a small gui application.  At
> present I plan to use PyGTK with Pango and Cairo.

You should be aware that unless something has changed recently, PyGTK
runs under X11 and is not native Aqua. This makes it a bit clunky to
deal with.

Greg



From paul.melis at gmail.com  Wed Oct 17 08:57:50 2007
From: paul.melis at gmail.com (Paul Melis)
Date: Wed, 17 Oct 2007 05:57:50 -0700
Subject: Static variable vs Class variable
In-Reply-To: <Xns99CC8AF5E7617duncanbooth@127.0.0.1>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
	<5nmcuhFiva37U2@mid.uni-berlin.de>
	<Xns99CC8AF5E7617duncanbooth@127.0.0.1>
Message-ID: <1192625870.815418.226970@e34g2000pro.googlegroups.com>

On Oct 17, 2:39 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
> > Simply not to introduce special cases I guess.  If you write ``x.a +=
> > b`` then `x.a` will be rebound whether an `a.__iadd__()` exists or
> > not. Otherwise one would get interesting subtle differences with
> > properties for example.  If `x.a` is a property that checks if the
> > value satisfies some constraints ``x.a += b`` would trigger the set
> > method only if there is no `__iadd__()` involved if there's no
> > rebinding.
>
> Unfortunately that doesn't work very well. If the validation rejects the
> new value the original is still modified:
>
> >>> class C(object):
>
>         def setx(self, value):
>                 if len(value)>2:
>                         raise ValueError
>                 self._x = value
>         def getx(self):
>                 return self._x
>         x = property(getx, setx)
>
> >>> o = C()
> >>> o.x = []
> >>> o.x += ['a']
> >>> o.x += ['b']
> >>> o.x += ['c']
>
> Traceback (most recent call last):
>   File "<pyshell#27>", line 1, in <module>
>     o.x += ['c']
>   File "<pyshell#22>", line 4, in setx
>     raise ValueError
> ValueError
>
> >>> o.x
> ['a', 'b', 'c']

Now that's really interesting. I added a print "before" and print
"after" statement just before and after the self._x = value and these
*do not get called* after the exception is raised when the third
element is added.



From tjreedy at udel.edu  Thu Oct 11 15:46:17 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 11 Oct 2007 15:46:17 -0400
Subject: Accessing Function Variables from Sub-functions
References: <1192097504.394834.184930@o3g2000hsb.googlegroups.com>
Message-ID: <felui9$i3j$1@sea.gmane.org>


"Licheng Fang" <fanglicheng at gmail.com> wrote in message 
news:1192097504.394834.184930 at o3g2000hsb.googlegroups.com...
| Sorry to dig up this old thread, but I would like to know what's the
| rationale is. Why can't a nested function rebind a variable of an
| outer function?

Because it is debateble whether this is overall a good idea and because it 
was not obvious exactly how to do so.  (There were about 10 different 
proposals.)  I believe an addition is scheduled for 3.0 (and 2.6 I 
suspect). 





From raims at dot.com  Wed Oct  3 16:19:30 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Wed, 3 Oct 2007 22:19:30 +0200
Subject: A question about subprocess
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
Message-ID: <1i5fhx4.d4yg4d1ha6nuoN%raims@dot.com>

JD <Jiandong.Ge at gmail.com> wrote:
> How can I do it with the subprocess?

You can't. Subprocess is a library to spawn new processes on the local
machine. If you want to handle external machines you need something like
parallel python: <http://www.parallelpython.com/>

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From kay.schluehr at gmx.net  Tue Oct  9 14:08:52 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Tue, 09 Oct 2007 11:08:52 -0700
Subject: ANN: generator_tools-0.1 released
In-Reply-To: <JbydnehhPNsmKpbanZ2dnUVZ_tOtnZ2d@comcast.com>
References: <1191914480.705611.118330@d55g2000hsg.googlegroups.com>
	<JbydnehhPNsmKpbanZ2dnUVZ_tOtnZ2d@comcast.com>
Message-ID: <1191953332.873892.40110@k79g2000hse.googlegroups.com>

On Oct 9, 7:17 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> Kay Schluehr wrote:
> > Originally I came up with the idea of a pure Python implementation for
> > copyable generators as an ActiveState Python Cookbook recipe. Too bad,
> > it was badly broken as Klaus M?ller from the SimPy project pointed
> > out. Two weeks and lots of tests later I got finally a running version
> > that works not only in the very most simple use cases. As the code
> > size increased it turned out to not really fit anymore into the
> > "recipe" category and I created a package called "generator_tools".
>
> > generator_tools-0.1 is available for both Python 2.5 and Python 3.0
> > (!)
> [snip]
> >>>> pickler = GeneratorPickler("test.pkl")
> >>>> pickler.pickle_generator(g_gen)
> >>>> k_gen = pickler.unpickle_generator()
> >>>> list(g_gen) == list(k_gen)
> > True
>
> This seems like an odd syntax for pickling. Does the package support the
> normal pickle machinery?  That is, does it register the appropriate
> methods with the copy_reg module?
>
> STeVe

The picklegenerators module defines two functions: pickle_generator
that wraps the generator into a GeneratorSnapshot object and
unpickle_generator that calls copy_generator on the unpickled
GeneratorSnapshot. The only reason I also created the GeneratorPickler
class was some simplification of testing. So I didn't invest time yet
keeping the API in line with Pythons normal pickle machinery but will
do so as the project advances i.e. in the next release.

Kay



From steve at REMOVE-THIS-cybersource.com.au  Fri Oct 19 11:13:29 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 19 Oct 2007 15:13:29 -0000
Subject: dynamic invoke
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<1192793679.102637.274620@e9g2000prf.googlegroups.com>
Message-ID: <13hhicpnrdsiie7@corp.supernews.com>

On Fri, 19 Oct 2007 11:34:39 +0000, Nils wrote:

>  Use apply():
>  http://docs.python.org/lib/non-essential-built-in-funcs.html

No, don't use apply. Not only does it not solve the original poster's 
problem, it is a deprecated function. You shouldn't use it in new code.



-- 
Steven.


From arkanes at gmail.com  Tue Oct  2 11:07:04 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 2 Oct 2007 10:07:04 -0500
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <4866bea60710020807y35a8e2bclb70381be168e4216@mail.gmail.com>

On 10/1/07, bramble <cadet.bramble at gmail.com> wrote:
> What is the backstory to why Python includes Tk bindings, as opposed
> to some other set of bindings?
>
> I've written a few little Tkinter-based apps, and it's nice and
> simple. I like it well enough. That said though, I keep feeling the
> gravitational pull toward GTK+. I've been meaning to get the whole
> glade+gtk+python thing happening with my own projects, as soon as time
> allows. Is there resistance in the upper Python echelons to GTK
> because of its LGPL licensing?
>
> Reading Alex's Nutshell book, right off the bat he comments that "The
> most popular Python GUI toolkit today is probably wxPython". But then
> he goes on for 45 pages on Tkinter... Seems like he wanted to write
> that chapter on wx instead...
>
> WxWidgets, the last time I looked at it, seemed awfully like MS
> Window's MFC. The licensing seemed vague at the time, and it looks
> like wx contains an extra layer of GUI library, so I didn't spend any
> real time on it. But, regardless, it seems to get good press among
> python folk (I think I remember ESR noting how it was his GUI toolkit
> of choice).
>
> PyQt has had that issue (IIRC) about needing to pay for it for
> commercial apps, so I can see how there might be resistance to it
> being considered the "standard Python GUI toolkit".
>
> So, it would seem to me that Tkinter *might* remain in Python proper,
> but that I probably wouldn't see much effort put into it. Well, the
> Python standard library docs tell a different story. There's stuff in
> there about Tix, ScrolledText, turtle, and then the "other GUI
> packages" doc page goes on about Python megawidgets (Tk-based) and
> Tkinter3000 Widget Construction Kit (WCK). Wow. Looks like Tkinter is
> still having serious support -- even though in that same doc at the
> bottom notes, "PyGTK, PyQt, and wxPython, all have a modern look and
> feel and far more widgets and better documentation than Tkinter."
>
> So, that leaves me wondering, why is Tkinter still getting so much
> focus in the Python standard library?
>
> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?
>

Tk is stable, slow moving, highly portable, and liberally licensed.
It's not very good except for that, but those are very important
characteristics for something in the standard library. You'll note
that Tix and the various other Tk "expansion packs" aren't in the
stdlib.

wxPython is LGPL with a binary linking exception - there's no license
ambiguity there - but it develops far too fast to be in the stdlib.

PyQt is GPL or commercial only and I wouldn't consider that suitable
for a standard library package.

PyGtk has poor cross platform support, a very large footprint (the
largest of all these libraries) as well as a complicated runtime
environment. It's probably the closest to suitable   for standard
library inclusion, but it doesn't have the binary linking exemption
that wxPython does (theres some question as to how needed that is for
Python code, though) and it's got no compelling API advantage over Tk.
If you want to trade the large footprint for the more advanced
toolkit, thats an option you have but I don't think it's a suitable
standard library decision.


From none at try.invalid  Thu Oct 25 12:11:16 2007
From: none at try.invalid (Pete Bartonly)
Date: Thu, 25 Oct 2007 17:11:16 +0100
Subject: local variable referenced before assignment
In-Reply-To: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
Message-ID: <4720c025$0$513$5a6aecb4@news.aaisp.net.uk>

Pete Bartonly wrote:
> 
> Quick question, probably quite a simple matter. Take the follow start of 
> a method:
> 
> 
> def review(filesNeedingReview):
> 
>     for item in filesNeedingReview:
>         (tightestOwner, logMsg) = item
> 
>         if (logMsg != None):
>             for logInfo in logMsg.changed_paths:
> 
> 
> This generates the error:
> 
>   UnboundLocalError: local variable 'logMsg' referenced before assignment
> 
> I thought I'd assigned it in the "(tightestOwner, logMsg) = item" line - 
> so in the python interpreter complaining about the fact this assignment 
> might not go well?
> 
> Thanks!

Argh! Mea culpa everyone!
Turns out that there is a similar few lines of code later on in the 
code. I was confusing which was which. (I was using meta-x goto-line but 
then looking at the wrong but somehow, as it appeared on the same screen 
in emacs.)
So the error was occuring at a similar line in the code, but one at 
whihc logMsg *wasn't* being set beforehand.

Sorry all, thanks for your help, appreciate it!
Pete



From aleax at mac.com  Sun Oct  7 16:31:26 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 13:31:26 -0700
Subject: Newbie packages Q
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
	<47091e82$0$15807$426a74cc@news.free.fr>
	<1191786525.264853.107630@k79g2000hse.googlegroups.com>
	<1i5m6we.1wwjdby573v11N%aleax@mac.com>
	<1191788530.784618.284080@o80g2000hse.googlegroups.com>
Message-ID: <1i5m83i.1wbevvrjyk05eN%aleax@mac.com>

MarkyMarc <marcsgbrevkonto at gmail.com> wrote:
   ...
> > > > > And sys.path is  /python/Test/bpack
> >
> > sys.path must be a LIST.  Are you saying you set yours to NOT be a list,
> > but, e.g., a STRING?!  (It's hard to tell, as you show no quotes there).
   ...
> > > I also tried to put /python/ and /python/Test in the sys.path same
> > > result.
> >
> > If the only ITEM in the list that is sys.path is the string '/python',
> > then any Python code you execute will be able to import Test.apack (as
> > well as Test.bpack, or just Test).
> 
> Of course I have more than just the /python string in the sys.path.
> I have a list of paths, depending on which system the code run on.

As long as '/python' comes in the list before any other directory that
might interfere (by dint of having a Test.py or Test/__init__.py), and
in particular in the non-pathological case where there are no such
possible interferences, my assertion here quoted still holds.

If you're having problems in this case, run with python -v to get
information about all that's being imported, print sys.path and
sys.modules just before the import statement that you think is failing,
and copy and paste all the output here, incuding the traceback from said
failing import.


Alex


From arkanes at gmail.com  Wed Oct 31 15:43:39 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 31 Oct 2007 14:43:39 -0500
Subject: why did these companies choose Tcl over Python
In-Reply-To: <1193857276.274481.319250@57g2000hsv.googlegroups.com>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
	<t3agi3t7seui235qfccdtre4c9dnpo5q76@4ax.com>
	<1193857276.274481.319250@57g2000hsv.googlegroups.com>
Message-ID: <4866bea60710311243y67129decn5fa8863810718d6b@mail.gmail.com>

On Oct 31, 2007 2:01 PM, chewie54 <dfabrizio51 at gmail.com> wrote:
> On Oct 31, 3:06 am, Tim Roberts <t... at probo.com> wrote:
> > chewie54 <dfabrizi... at gmail.com> wrote:
> >
> > >As an electronics engineer I use some very expensive EDA CAD tool
> > >programs that are scriptable using Tcl.  I was wondering why these
> > >companies have choose to use Tcl instead of Python.   Some of these
> > >are:
> >
> > >   Mentor Graphics ModelTech VHDL and Verilog simulator
> > >   Synopsys  Design Compiler and Primetime Static Timing Analyzer
> > >   Actel FPGA tools.
> >
> > Well, I recently did a development contract for Mentor, and the RFQ gave me
> > the choice of doing the library binding and diagnostic GUI in either Tcl or
> > Python.  Naturally, I chose Python (and wxPython), and both the client and
> > I are quite happy with the result.
> >
> > (Actually, I did a Tcl binding for them as well, and just writing the text
> > scripts reinforced my dislike for it...)
> > --
> > Tim Roberts, t... at probo.com
> > Providenza & Boekelheide, Inc.
>
> Hi Tim,
>
> I would like to use Python and C and wxWidgets for my EDA CAD program.
> I want
> to put most of the program core in an Python extension and GUI in
> wxWidgets.
>
> I do need to get publishing quality vector graphics outputs from this
> program so
> one of my concerns is if the wxWidgets will work for this or will I
> have to use
> something like openGL or Cairo.
>

wxWidgets has a vector graphics implementations which is a wrapper for
native vector graphics. Look at wxGraphicsContext. It's not perfect
and you may want to use Cairo directly, especially if you need to
render to PDF or postscript for output.


From ptmcg at austin.rr.com  Mon Oct 22 12:22:38 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Mon, 22 Oct 2007 09:22:38 -0700
Subject: Need help parsing with pyparsing...
In-Reply-To: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>
References: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>
Message-ID: <1193070158.255174.255140@z24g2000prh.googlegroups.com>

On Oct 22, 4:18 am, "Just Another Victim of the Ambient Morality"
<ihates... at hotmail.com> wrote:
>     I'm trying to parse with pyparsing but the grammar I'm using is somewhat
> unorthodox.  I need to be able to parse something like the following:
>
> UPPER CASE WORDS And Title Like Words
>
>     ...into two sentences:
>
> UPPER CASE WORDS
> And Title Like Words
>
>     I'm finding this surprisingly hard to do.  The problem is that pyparsing
> implicitly assumes whitespace are ignorable characters and is (perhaps
> necessarily) greedy with its term matching.  All attempts to do the
> described parsing either fails to parse or incorrectly parses so:
>
> UPPER CASE WORDS A
> nd Title Like Words
>
>     Frankly, I'm stuck.  I don't know how to parse this grammar with
> pyparsing.
>     Does anyone know how to accomplish what I'm trying to do?
>     Thank you...

Yes, whitespace skipping does get in the way sometimes.  In your case,
you need to clarify that each word that is parsed must be followed by
whitespace.  See the options and comments in the code below:

from pyparsing import *

data = "UPPER CASE WORDS And Title Like Words"

# Option 1 - qualify Word instance with asKeyword=True
upperCaseWord = Word(alphas.upper(), asKeyword=True)
titleLikeWord = Word(alphas.upper(), alphas.lower(), asKeyword=True)

# Option 2 - explicitly state that each word must be followed by
whitespace
upperCaseWord = Word(alphas.upper()) + FollowedBy(White())
titleLikeWord = Word(alphas.upper(), alphas.lower()) +
FollowedBy(White())

# Option 3 - use regex's - note, still have to use lookahead to avoid
matching
# 'A' in 'And'
upperCaseWord = Regex(r"[A-Z]+(?=\s)")
titleLikeWord = Regex(r"[A-Z][a-z]*")

# create grammar, with some friendly results names
grammar = (OneOrMore(upperCaseWord)("allCaps") +
           OneOrMore(titleLikeWord)("title"))

# dump out the parsed results
print grammar.parseString(data).dump()


All three options print out:

['UPPER', 'CASE', 'WORDS', 'And', 'Title', 'Like', 'Words']
- allCaps: ['UPPER', 'CASE', 'WORDS']
- title: ['And', 'Title', 'Like', 'Words']

Once you have this, you can rejoin the words with " ".join, or
whatever you like.

-- Paul



From anuraguniyal at gmail.com  Tue Oct 30 04:12:27 2007
From: anuraguniyal at gmail.com (Anurag)
Date: Tue, 30 Oct 2007 01:12:27 -0700
Subject: Iteration for Factorials
In-Reply-To: <5oKdncgTz5YBBb_anZ2dnUVZ_obinZ2d@comcast.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<7xodeouga8.fsf@ruckus.brouhaha.com>
	<1193396435.916666.277770@50g2000hsm.googlegroups.com>
	<5oKdncgTz5YBBb_anZ2dnUVZ_obinZ2d@comcast.com>
Message-ID: <1193731947.088651.324330@50g2000hsm.googlegroups.com>

What about this no map, reduce, mutiplication or even addition
Its truly interative and You will need to interate till infinity if
you want correct answer ;)

def factorial(N):
    """
    Increase I ...and go on increasing...
    """
    import random

    myNumer = range(N)
    count = 0
    I = 10000 #10**(N+1)
    for i in range(I):
        bucket = range(N)
        number = []
        for i in range(N):
            k = bucket[ random.randrange(0,len(bucket))]
            bucket.remove(k)
            number.append(k)

        if number == myNumer:
            count+=1

    return int(I*1.0/count+.5)



From torriem at chem.byu.edu  Mon Oct 29 21:35:04 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Mon, 29 Oct 2007 19:35:04 -0600
Subject: A Python 3000 Question
In-Reply-To: <fg5j5p$a3t$1@solaris.cc.vt.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu> <87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu>
Message-ID: <47268A48.8010701@chem.byu.edu>

brad wrote:
> Not complaining. len is simple and understandable and IMO fits nicely 
> with split(), strip(), etc... that's why I used it as an example, but 
> list(), etc. could be used as examples as well:
> 
> a_string.list() instead of list(a_string)

This is a great example of why list() needs to be a singleton and *not*
a method of any particular class.  Consider the following contrived
object (yes object):

def foo():
    for x in xrange(6):
        yield x


If we eliminated list() as a first class singleton and forced it to be a
method call, how would it work with this generator object?  Right now I
can say:

mylist=list(foo())

Saying list() should be a method only of something iterable is not only
foolish, but wasteful.  Why should I burden every iterable object with
redundant code?  And how would you deal with generators in your scenario?

In short, making list() a method is wrong-thinking.  Reminds me of java.
 Ugg.

> 
>> And to answer the question. In OO programming generic functions
>> are no less important than classes and objects.
> 
> Do they not take away from the OOness of the overall language and 
> introduce inconsistencies?

If find Python to be more OO through and through than Java.  Once you
understand that functions are objects, and duck-typing, things like
len() being a function rather than a method make perfect sense.




From software at ginstrom.com  Sun Oct 14 23:33:59 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Mon, 15 Oct 2007 12:33:59 +0900
Subject: Entering username & password automatically using urllib.urlopen
In-Reply-To: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
References: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
Message-ID: <007c01c80edc$3a398020$0203a8c0@MOUSE>

> On Behalf Of rodrigo
> I am trying to retrieve a password protected page using:
> 
> get = urllib.urlopen('http://password.protected.url"').read()

I would suggest looking at mechanize.
http://wwwsearch.sourceforge.net/mechanize/

from mechanize import Browser

USERNAME = "user"
PASSWORD = "secret"
LOGIN_PAGE = "http://password.protected.url/"

browser = Browser()
browser.open( LOGIN_PAGE )

# log in
browser.select_form( nr=0 ) # Assuming log in form is first form on the page
# Check the form for the actual field names...
browser['user'] = USERNAME
browser['pass'] = PASSWORD
browser.submit()

# Content goodness follows...

##
Of course, this assumes that the site doesn't use some kind of JavaScript
trickery to prevent automation like the above. In that case, you'd have to
use something like PAMIE
http://sourceforge.net/projects/pamie/

HTH,
Ryan Ginstrom



From tjreedy at udel.edu  Wed Oct 17 12:15:35 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 17 Oct 2007 12:15:35 -0400
Subject: linear programming in Python
References: <1192635868.971584.7000@k35g2000prh.googlegroups.com>
Message-ID: <ff5cf8$fvl$1@ger.gmane.org>


<jivelasquezt at gmail.com> wrote in message 
news:1192635868.971584.7000 at k35g2000prh.googlegroups.com...
| Hi all,
|
| I'm new to this group so I don't know if this question has been posted
| before,

Searching this group for 'linear programming' at
http://groups.google.com/group/comp.lang.python/topics?lnk=srg
gives 30 hits.

| but does anyone knows about linear/integer programming
| routines in Python that are available on the web, more specifically of
| the branch and bound method.

Searching the web for 'python linear programming' gives a lot more.

tjr





From Graham.Dumpleton at gmail.com  Thu Oct 18 07:08:10 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Thu, 18 Oct 2007 11:08:10 -0000
Subject: MOD_PYTHON + packages reloading
In-Reply-To: <Xns99CD64546C554duncanbooth@127.0.0.1>
References: <1192694766.953529.25270@k35g2000prh.googlegroups.com>
	<Xns99CD64546C554duncanbooth@127.0.0.1>
Message-ID: <1192705690.032913.177220@e34g2000pro.googlegroups.com>

On Oct 18, 6:55 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> lukasz.... at gmail.com wrote:
> > I came across annoying problem during my fun with mod_python. I turned
> > out that mod_python load package only onca and don't care about any
> > changes to it. Obviously it makes sense on production server but
> > during development is more then annoying.
>
> Have you read the mod_python manual?
>
> http://www.modpython.org/live/current/doc-html/dir-other-par.html
>
> 5.4.8 PythonAutoReload
>
> Syntax: PythonAutoReload {On, Off}
> Default: PythonAutoReload On
> Context: server config, virtual host, directory, htaccess
> Override: not None
> Module: mod_python.c
>
> If set to Off, instructs mod_python not to check the modification date
> of the module file.
>
> By default, mod_python checks the time-stamp of the file and reloads the
> module if the module's file modification date is later than the last
> import or reload. This way changed modules get automatically reimported,
> eliminating the need to restart the server for every change.
>
> Disabling autoreload is useful in production environment where the
> modules do not change; it will save some processing time and give a
> small performance gain.

Have you read the other document:

  http://www.modpython.org/live/current/doc-html/pyapi-apmeth.html

In particular read the documentation for the import_module() function.
It clearly describes in what limited cases module reloading is
performed. It does not do it for all modules as many mistakenly
believe. It does not do any form of module reloading on Python
packages because it is impossible to do properly due to the fact that
cyclic dependencies can occur with how packages are generally
structured.

For a description of some of the issues and why mod_python 3.3 works
like it does, see the big list of problems related to module reloading
in older versions of mod_python:

  http://www.dscpl.com.au/wiki/ModPython/Articles/ModuleImportingIsBroken

So, what is in 3.3 as described in documentation for import_module()
is as good as it gets. As long as you work within the constraints it
imposes you can go a long way, but don't expect miracles.

Graham



From python.list at tim.thechases.com  Tue Oct 30 08:54:42 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 30 Oct 2007 07:54:42 -0500
Subject: appending into a list; dictionary and list
In-Reply-To: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
References: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
Message-ID: <47272992.1000107@tim.thechases.com>

>    A                     B              C                     D       E
[snipped yet another column of random data]
> I need to append the column D and E into a list:
>                             in such a way that the list should have
> [D,E,D,E,D,E........]
> How do i do it.

You start by writing some code[1].  I recommend Python, as it's a 
wonderful language, easy to learn, easy to read, has lots of 
example code, and the folks on this mailing list are ever so 
helpful (as shown by answering your last umpteen questions for 
which you seem to have not demonstrated a whit of effort towards 
solving yourself).  However, as you're doing lots of text 
manipulations, I've heard Perl and Awk are also good at that sort 
of thing[2].

Then once you've written your code, if you have problems with it, 
you ask questions here on the list.  Post the germane snippet of 
code that isn't working quite the way you expected, along with a 
detailed description of the problem.  Perhaps, if you get an 
exception traceback, you include the whole traceback.[3]

-tkc

[1] Writing code is a difficult thing to do and success may be 
limited to people with an aptitude for the thought process.  If 
programming confounds you, you may want to read any of the 
readily available texts on how to program[4], take a class on the 
topic, or you may need to hire somebody to write the code for you.

[2]  I occasionally do Awk, but try to avoid Perl to the best of 
my abilities.

[3] http://catb.org/~esr/faqs/smart-questions.html

[4] Resources include:
http://docs.python.org/
http://diveintopython.org/toc/index.html
http://aspn.activestate.com/ASPN/Cookbook/Python
http://gnosis.cx/TPiP/
http://www.handysoftware.com/cpif/
http://ppython.com/
http://www.google.com/search?q=learn%20python


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 10:19:17 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 16:19:17 +0200
Subject: Override 'and' and 'or'
In-Reply-To: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
Message-ID: <4708eabf$0$18271$426a74cc@news.free.fr>

Dekker a ?crit :
> Is it possible to override 'and' and/or 'or'? I cannot find a special
> method for it... __and__ and __rand__ and __or__ and __ror__ are for
> binary manipulation... any proposals?

http://docs.python.org/ref/customization.html
"""
__nonzero__(  	self)
     Called to implement truth value testing, and the built-in operation 
bool(); should return False or True, or their integer equivalents 0 or 
1. When this method is not defined, __len__() is called, if it is 
defined (see below). If a class defines neither __len__() nor 
__nonzero__(), all its instances are considered true.
"""

Not that in Python, 'and' don't yield bools:

 >>> "aa" and "bb"
'bb'
 >>> "aa" and None # yields None
 >>> "aa" and 0
0
 >>> "aa" or "bb"
'aa'
 >>> 0 or "bb"
'bb'
 >>> None or "bb"
'bb'
 >>> "aa" or 0
'aa'
 >>> "aa" or None
'aa'
 >>>

HTH


From python.list at tim.thechases.com  Mon Oct 29 21:39:13 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 29 Oct 2007 20:39:13 -0500
Subject: two files into an alternate list
In-Reply-To: <aa405c1f0710290920v5c548269p24762e41790216cb@mail.gmail.com>
References: <aa405c1f0710290920v5c548269p24762e41790216cb@mail.gmail.com>
Message-ID: <47268B41.2000107@tim.thechases.com>

>     i have a file :
>          file 1:
> 1
> 2
> 3
> 4
> 5
> 6
> 
> file2:
> a
> b
> c
> d
> e
> f
> how do i make the two files into  list like this =
> [1,a,2,b,3,c,4,d,5,e,6,f]

  from itertools import cycle
  def serialize(*sources):
    while True:
      for source in sources:
        yield source.next()
  def stripper(iterator):
    for thing in iterator:
      yield thing.strip()
  for thing in serialize(
      stripper(file('file1.txt')),
      stripper(file('file2.txt'))
      ):
    print thing

As a previous responder noted, there are a number of ways to
treat the edge cases when the lengths of the files don't match.
Since you left the condition underqualified, I chose to let it
expire when the first one gave out rather than try and deal with
the complications of such ambiguity.

-tkc





From java.oke at gmail.com  Sat Oct 20 16:43:14 2007
From: java.oke at gmail.com (j.oke)
Date: Sat, 20 Oct 2007 13:43:14 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
Message-ID: <1192912994.023039.180120@v29g2000prd.googlegroups.com>

On 20 Ott, 05:28, Xah Lee <x... at xahlee.org> wrote:
>

yes-and-no.



From jcd at sdf.lonestar.org  Tue Oct 30 15:17:49 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 30 Oct 2007 15:17:49 -0400
Subject: Parsing xml file in python
In-Reply-To: <1193769917.594712.87990@k35g2000prh.googlegroups.com>
References: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
	<5opbmcFo3an1U1@mid.uni-berlin.de>
	<1193769917.594712.87990@k35g2000prh.googlegroups.com>
Message-ID: <20071030191749.GF11330@sdf.lonestar.org>

On Tue, Oct 30, 2007 at 11:45:17AM -0700, amjadcsu at gmail.com wrote regarding Re: Parsing xml file in python:

Top-posting corrected....

> 
> 
> 
> On Oct 30, 12:32 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > amjad... at gmail.com schrieb:
> >
> >
> >
> > > I am a newbie in python
> > > I am trying to parse a xml file and write its content in a txt file.
> > > The txt contains null elements. Any reason what  iam doing wrong here
> >
> > > Here is the code that i wrote
> >
> > > import sys,os
> > > import xml.sax
> > > import xml.sax.handler
> > > from xml.sax.handler import ContentHandler
> > > from xml.sax import make_parser
> >
> > > class gmondxmlparse (ContentHandler):
> >
> > >     def __init__(self,searchTerm):
> > >         self.searchTerm=searchTerm;
> >
> > >     def startElement(self,name,attrs):
> >
> > >         if name=="HOST":
> > >             self.hostname=attrs.get('NAME',"")
> > >             self.IP=attrs.get('IP',"")
> > >         elif name=="METRIC":
> > >             self.metricname=attrs.get('NAME', "")
> > >             self.metricvalue=attrs.get('VAL',"")
> > >             self.metrictype=attrs.get('TYPE',"")
> > >             self.metricunit=attrs.get('UNITS',"")
> > >         return
> >
> > >     def endElement(self,name):
> > >         if name=="HOST" and self.searchTerm==self.hostname:
> > >             try:
> > >                 fh=open('/root/yhpc-2.0/ganglia.txt' ,'w')
> > >             except:
> > >                 print "File /root/yhpc-2.0/ganglia.txt can not be
> > > open"
> > >                 sys.exit(1)
> > >             fh.write("This is a test for xml parsing with python with
> > > chris and amjad \n")
> > >             fh.write("the host name is", self.hostname, "\n")
> > >             fh.write("the ip address is", self.IP, "\n")
> > >             fh.close()
> >
> > > searchTerm="HOST"
> > > parser=make_parser()
> > > curHandler=gmondxmlparse(searchTerm)
> > > parser.setContentHandler(curHandler)
> > > parser.parse(open("/root/yhpc-2.0/gmond.xml"))
> >
> > > Here is the sample of xml file
> >
> > > Here is the  xmk file called gmond.xml
> > > <HOST NAME="192.168.10.163" IP="192.168.10.163" REPORTED="1193689455"
> > > TN="0" TMAX="20" DMAX="0" LOCATION="unspecified"
> > > GMOND_STARTED="1193170061">
> > > <METRIC NAME="cpu_num" VAL="2" TYPE="uint16" UNITS="CPUs" TN="994"
> > > TMAX="1200" DMAX="0" SLOPE="zero" SOURCE="gmond"/>
> >
> > Without an actual error given, it's hard to know what your problem is.
> >
> > One thing though is noticable: your XML below isn't valid - XML has only
> > one root-element.
> >
> > And just for the record: it appears that you work under linux using a
> > root-account. Bad idea. Really.
> >
> > http://linuxbraindump.org/2007/08/13/the-10-commandments-for-new-linu...
> >
> > Diez
> 
> 
> That XML is just a snapshot
> I am not getting into the xml parser. The error is not generated but
> also the /root/yhpc-2.0/ganglia.txt does not contain anything.
> 

Well, if ganglia.txt contains nothing, and you received no output from the program, then either endElement never got called, or `if name=="HOST" and self.searchTerm==self.hostname:` never evaluated to true.  Because if you couldn't open for writing, you would have gotten the message you set up on the except block, and if you could, then even if your variables didn't contain any data, you would have seen the boilerplate text that you wrote.

Cheers,
Cliff

P.S. Please bottom-post when replying to the python list.  It sucks to have to look up and down a thread to see what's been said.



From paddy3118 at googlemail.com  Thu Oct 25 06:28:16 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Thu, 25 Oct 2007 10:28:16 -0000
Subject: python project ideas
In-Reply-To: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <1193308096.107035.261390@y42g2000hsy.googlegroups.com>

On Oct 25, 5:09 am, "menk... at gmail.com" <menk... at gmail.com> wrote:
> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group.
> May be something useful for open source or python community ...
> Well, just post what you think could be appropriate ...

Is their anything left over from the last Google summer of code Python
suggestions?

- Paddy.



From martin at v.loewis.de  Sun Oct 28 04:30:21 2007
From: martin at v.loewis.de (=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 28 Oct 2007 09:30:21 +0100
Subject: Unicode raw string containing \u
In-Reply-To: <Xns99D7427D9762OKB@199.45.49.11>
References: <Xns99D6F3EC75B79OKB@199.45.49.11>
	<13i8e4fovg17u1f@corp.supernews.com>
	<Xns99D7427D9762OKB@199.45.49.11>
Message-ID: <4724489d$0$2821$9b622d9e@news.freenet.de>

>     	That doesn't answer my question, since I asked for a unicode RAW 
> string literal.  Is this not possible?  (I was able to get what I want 
> using ur"\u005Cuniverse", although this is not totally ideal.)

It's a design flaw in Unicode raw string literals that they still
interpret \u escapes. And yes, your notation is one way to get what
you want; another is u"\\"+r"universe", although I'm unsure whether
that meets your requirements.

Regards,
Martin


From NikitaTheSpider at gmail.com  Fri Oct 19 12:14:25 2007
From: NikitaTheSpider at gmail.com (Nikita the Spider)
Date: Fri, 19 Oct 2007 12:14:25 -0400
Subject: documenting excepetions in Python
References: <1192807949.182072.69370@y27g2000pre.googlegroups.com>
Message-ID: <NikitaTheSpider-BC4827.12142519102007@johnf2.biosci.ohio-state.edu>

In article <1192807949.182072.69370 at y27g2000pre.googlegroups.com>,
 dale_bertrand at yahoo.com wrote:

> In python, how do I know what exceptions a method could raise?  Do I
> need to look at the source?  I don't see this info in the API docs for
> any of the APIs I'm using.

Hi Dale,
Usually the docs for a method will list the likely exceptions, but 
there's no way to know the full list of possible exceptions except by 
testing, testing, testing. Obviously, there's always a chance that 
there's a test you didn't think of and therefore an exception 
unaccounted for. I think this is a less-than-ideal aspect of Python but 
I don't have a suggestion on how to improve it.

Good luck

-- 
Philip
http://NikitaTheSpider.com/
Whole-site HTML validation, link checking and more


From devraj at gmail.com  Thu Oct 18 01:54:59 2007
From: devraj at gmail.com (Devraj)
Date: 17 Oct 2007 22:54:59 -0700
Subject: urlgrabber cookie handling?
In-Reply-To: <878x61zeia.fsf@pobox.com>
References: <1192593158.188757.129010@i38g2000prf.googlegroups.com>
	<878x61zeia.fsf@pobox.com>
Message-ID: <1192662171.402398.271710@t8g2000prg.googlegroups.com>

Hi John,

Thanks for getting back to me. I did find the ASPN article. If I
figure this out then I will make sure I post the code somewhere for
public consumption.

On Oct 18, 6:13 am, j... at pobox.com (John J. Lee) wrote:
> Devraj <dev... at gmail.com> writes:
> > Hi everyone,
>
> > I have been battling to make my code work with a HTTPS proxy, current
> > my code uses urllib2 to to most things and works well, except that
> > urllib2 doesn't handle HTTPS proxies.
>
> > Urlgrabber (http://linux.duke.edu/projects/urlgrabber/help/
> > urlgrabber.grabber.html) looks very promising except that I can find a
> > way to handle cookies in urlgrabber. Is there a way urlgrabber can use
> > a HTTPCookieProcess or cookielib.CookieJar object to handle cookies?
>
> I don't see a nice way.  But then I don't see any HTTPS proxy support
> in urlgrabber... (I looked at version 3.1.0).
>
> There is a recipe or two on ASPN showing how to support HTTPS proxies
> with urllib2, which gives an idea how to do it, though the code is a
> bit rough (I'd post some code myself, but I did it for work).
>
> John




From stefan.behnel-n05pAM at web.de  Tue Oct 30 17:34:39 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Tue, 30 Oct 2007 22:34:39 +0100
Subject: Parsing xml file in python
In-Reply-To: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
References: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
Message-ID: <4727A36F.6070003@web.de>

amjadcsu at gmail.com wrote:
> I am a newbie in python
> I am trying to parse a xml file and write its content in a txt file.

If you want to write code that does not hide your bugs behind cryptic event
handlers and instead helps you get XML work done, try using ElementTree or
lxml instead of SAX. The first is in the standard library of Python 2.5, the
second is here:

http://codespeak.net/lxml

Stefan


From istvan.albert at gmail.com  Thu Oct 11 23:20:07 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Fri, 12 Oct 2007 03:20:07 -0000
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
Message-ID: <1192159207.446220.17920@e9g2000prf.googlegroups.com>

On Oct 11, 2:23 am, IamIan <ian... at gmail.com> wrote:
>
> is a very lengthy garbled js file athttp://pagead2.googlesyndication.com/pagead/show_ads.js
>
> The first piece of JavaScript works fine and the ads display
> correctly, however the second file throws an "unterminated string
> literal" js error.

the javescript code above is fine. you must be making some other
error(s)



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Tue Oct 16 05:04:39 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Tue, 16 Oct 2007 11:04:39 +0200
Subject: IDLE and opening with Python 2.5
References: <mailman.46.1192513130.13605.python-list@python.org>
Message-ID: <5njd57Fifu2fU1@mid.individual.net>

Tony Mullen wrote:
> Python itself seems to work.  If I click python.exe it runs. 
> However, it does not appear in my start menu 

You could create the links yourself. Or reinstall Python 2.5.1.

> and I cannot set it as the default application to open .py files.

That's a problem of your OS. But I wonder why you cannot? The
Windows XP I have lets me use anything as application for opening
files of certain type. For fixing this, see above.
 
> Since uninstalling Python 2.4 (I have since installed 2.5.1 and
> rebooted several times) I can also no longer run IDLE.

Is it some kind of mental oder physical barrier, or is there an
error if you try to?
 
> Any ideas where I am going wrong here?

Wrong OS ;)

Regards,


Bj?rn

-- 
BOFH excuse #87:

Password is too complex to decrypt



From bignose+hates-spam at benfinney.id.au  Fri Oct 26 09:15:34 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 26 Oct 2007 23:15:34 +1000
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<87fxzyjkr1.fsf@benfinney.id.au>
	<13i3lg8k3j64s7b@corp.supernews.com>
Message-ID: <877ilaj9u1.fsf@benfinney.id.au>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:

> On Fri, 26 Oct 2007 19:19:46 +1000, Ben Finney wrote:
> > Nor should we. A function or type name should be short but
> > explicit, and 'Decimal' is about as short as I'd want.
> 
> You don't like str, int, float, list, set, dict, or bool?

They'd all make lousy names for a decimal type.

-- 
 \              "Whatever you do will be insignificant, but it is very |
  `\                     important that you do it."  -- Mahatma Gandhi |
_o__)                                                                  |
Ben Finney


From martin at v.loewis.de  Tue Oct 30 18:36:21 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 30 Oct 2007 23:36:21 +0100
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
Message-ID: <4727b1e6$0$13390$9b622d9e@news.freenet.de>

> Should I need to download a later version of tkinter and/or should I
> alter setup.py in my python install directory and then remake?

Neither, nor. You need the Tk header files installed; they probably
come in a package called libtk8.4-dev or some such in your system.
If they are present when setup.py runs, _tkinter will get built
automatically. If you don't have the header files of Tk installed,
no amount of fiddling with setup.py, or getting alternative sources
of tkinter, will actually get you a _tkinter module.

HTH,
Martin


From steven.bethard at gmail.com  Wed Oct 10 17:40:21 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 10 Oct 2007 15:40:21 -0600
Subject: Problem of Readability of Python
In-Reply-To: <5n4t2vFgajr3U1@mid.individual.net>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<mailman.31.1192033699.927.python-list@python.org>
	<5n4t2vFgajr3U1@mid.individual.net>
Message-ID: <rqCdnRrKrolY25DanZ2dnUVZ_gadnZ2d@comcast.com>

Bjoern Schliessmann wrote:
> Kevin wrote:
>> Am I missing something, or am I the only one who explicitly
>> declares structs in python?
> 
> Yes -- you missed my posting :)

Actually, your posting just used dicts normally.

Kevin is creating a prototype dict with a certain set of keys, and then 
copying that dict and filling in the keys each time he creates a new 
instance.  It's basically a poor man's OOP.

STeVe


From anandology at gmail.com  Wed Oct 31 18:26:17 2007
From: anandology at gmail.com (Anand)
Date: 31 Oct 2007 15:26:17 -0700
Subject: object inheritance
In-Reply-To: <mailman.667.1193806679.13605.python-list@python.org>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
	<Xns99D59713BE0FAduncanbooth@127.0.0.1>
	<1193801794.225829.82490@i13g2000prf.googlegroups.com>
	<mailman.667.1193806679.13605.python-list@python.org>
Message-ID: <1193829032.389700.215520@q3g2000prf.googlegroups.com>

On Oct 31, 9:57 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Wed, 31 Oct 2007 00:36:34 -0300, Anand <anandol... at gmail.com> escribi?:
>
> >> No, that is an argument for multiple-inheritance, mixin classes etc. You
> >> know when constructing the object what behaviour you want it to have. It
> >> isn't an argument for changing the behaviour of an existing object
> >> dynamically.
> > Partially true. I don't want to change the behavior of an exiting
> > object. I know what behavior I want to have at the time of creating.
> > This can be achieved by creating classes dynamically by parameterizing
> > the base class, which I thought is ugly.
>
> If you know at compile time which features you want, you can use multiple
> inheritance to define the new class.
> If you only know the set of clases to mix at run time, you can dinamically
> create new classes with 'type':
>
> newclass = type('newclass', (CachedDB, SimpleDB), {})
> db = newclass()
> db.withIDs will call CachedDB.withID, as you want.

Interesting.

CachedDB.withID should call withID from its super class (here
SimpleDB), when it is not in cache. How to do that?




From gagsl-py2 at yahoo.com.ar  Thu Oct 18 00:53:20 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 01:53:20 -0300
Subject: if instance exists problem ..
References: <mailman.142.1192660790.13605.python-list@python.org>
	<1192662735.463554.165450@e9g2000prf.googlegroups.com>
	<13hdj38n7n3bv55@corp.supernews.com>
	<13hdjfmii2jc964@corp.supernews.com>
Message-ID: <op.t0dmi6dsx6zn5v@gabriel2.softlabbsas.com.ar>

En Thu, 18 Oct 2007 00:07:34 -0300, Steven D'Aprano  
<steve at REMOVE-THIS-cybersource.com.au> escribi?:

> On Thu, 18 Oct 2007 03:00:56 +0000, Steven D'Aprano wrote:
>
>> On Wed, 17 Oct 2007 23:12:15 +0000, Paul Hankin wrote:
>>
>>> 'if x' doesn't test if x exists, it tests if x when cast to a bool is
>>> True.
>>
>> To be pedantic:
>>
>> Python doesn't have type casts. bool(x) doesn't cast x as a bool, it
>> creates a brand new Boolean object from x.
>
> Actually, to be even more pedantic, True and False are both singletons,
> and so bool() doesn't actually create a new Boolean object but reuses the
> existing ones.

To be even more pedantic, 'if x' does not invoke the builtin bool(),  
instead it uses PyObject_IsTrue, which returns a plain C integer, not a  
Python bool object.

-- 
Gabriel Genellina



From chowroc.z at gmail.com  Wed Oct 24 04:37:01 2007
From: chowroc.z at gmail.com (Roc Zhou)
Date: Wed, 24 Oct 2007 08:37:01 -0000
Subject: "realtime" fs mirror application (backup, Python and Linux inotify)
Message-ID: <1193215021.438410.308750@q5g2000prf.googlegroups.com>

Recently I started an open source project "cutils" on the sourceforge:
   http://sourceforge.net/projects/crablfs/

The document can be found at:
http://crablfs.sourceforge.net/#ru_data_man

This project's mirrord/fs_mirror tool is a near realtime file system
mirroring application across 2 or more hosts, something like MySQL's
replication, but it's for the file system especially with a great
amountof small files, such as the php scripts and images of a website
or the
(vitual) websites.

There are several ways to use this tool. The simplest is to mirror a
host's file system to another host for backup, and use the rotate
function(in the future version) or rotate scripts to get a daily or
hourly snapshot with the hard link.

Or futhur more, you can use it this way:
  This graph should be displayed with monospaced fonts:

      +----------+
      |  worker  | -[mirrord] -----------\
      +----------+                       |
         ......                          |
                                         |
      +----------+                       |
      |  worker  | -[mirrord] -----------\
      +----------+                       |
                                         V
                                    [fs_mirror]
                                         |
      +----------+                  +----------+
      |  worker  | -[mirrord] --->  |  backup  |
      +----------+                  +----------+
           |                             |
      [take_over]                        |
           |                             |
           V                             |
      +----------+                       |
      |  rescue  | <------------------- NFS
      +----------+

This is the multi to one backup, which is cost efficient. If one of
the worker hosts fails, you can subsitute the failed worker with the
rescue host, with the aid of any high available method, such as
heartbeat
project. By this way, you can use 1 or 2 hosts to support the HA of
more than 3 servers.

Or you can also use it as an IDS(Intrusion Detection System) like a
realtime "tripware", or you can make a mirror chain that a host B
mirrors from A and be mirrored by C, etc ... I will also try to
research a way
to use it as a distributed implemetation with one write and multi-read
model.

mirrord/fs_mirror makes use of inotify, which is a function afforded
by the recent Linux (from 2.6.12). It is a counterpart of FAM, since
Linux FAM has stopped so long.

Now it works for me, on a RHEL4 system and the LFS 6.2, I hope this
tool can be useful to you too.

Thanks.



From gandalf at shopzeus.com  Tue Oct 23 09:29:15 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Tue, 23 Oct 2007 15:29:15 +0200
Subject: Problem with PEXPECT in Python
In-Reply-To: <648636520710230542q7f15a265kf33a757c23bba658@mail.gmail.com>
References: <648636520710230542q7f15a265kf33a757c23bba658@mail.gmail.com>
Message-ID: <471DF72B.6000102@shopzeus.com>


>  
>
>  
>
> cmd ='scp'+' '+source_file+' '+user+'@'+ip+':'+desti_path
>

You might wanna try to login with a public/private key pair, then scp 
won't ask for a password.



From valereG at hotmail.fr  Fri Oct 19 16:35:16 2007
From: valereG at hotmail.fr (=?iso-8859-1?q?S=E9bastien?= Weber)
Date: 19 Oct 2007 20:35:16 GMT
Subject: How to use module audit-lib ?
References: <4718becc$0$21146$7a628cd7@news.club-internet.fr>
	<47190A67.2060004@o2.usun.pl>
Message-ID: <47191503$0$21145$7a628cd7@news.club-internet.fr>

Le Fri, 19 Oct 2007 21:49:59 +0200, Jarek Zgoda a ?crit?:

> S?bastien Weber napisa?(a):
> 
>> I've installed the python-audit-lib module but there's no
>> documentation. Does someone know how to use it ?
> 
> I don't know this package, but why did you install it? Maybe somebody in
> ?berwald knows its usage?

Hello,
I've installed it to monitor some file's use : who/what makes what on a 
file ? It's a wrapper for the audit fonction which is new in the kernel 
2.6 and which allows you to know how a file is used by who. A command-
line utility named "auditctl" exists, but I want something written in 
Python - to make an simple end-user application.
It seems like nobody has ever written smoething with that module... 

(Sorry for my english, I'm french).

SW


From david at nospam.spam  Wed Oct 31 04:05:34 2007
From: david at nospam.spam (david)
Date: Wed, 31 Oct 2007 19:05:34 +1100
Subject: basic threading question
In-Reply-To: <1193789794.782609.197860@z9g2000hsf.googlegroups.com>
References: <13ifh9hf5eor49f@corp.supernews.com>
	<1193789794.782609.197860@z9g2000hsf.googlegroups.com>
Message-ID: <13igdq81vlpfk4b@corp.supernews.com>

chris.monsanto at gmail.com wrote:
> On Oct 30, 7:58 pm, "bambam" <da... at asdf.asdf> wrote:
>> Are function variables thread safe?
>>
>> def f(a):
>>     # whatever
>>     return float(a)
>>
>> Is that OK?
>>
>> def f(a):
>>     #whatever
>>     b=a:
>>     #whatever:
>>     return float(b)
>>
>> Is that OK?
>>
>> Steve.
> 
> Huh?
> 
If I have 37 threads, all calling a large function 'f', are the formal 
parameters thread safe?

That is, will the formal parameters be trashed?  Do you need to use 
locks or semaphores before using formal parameters? Are the labels for
formal parameters static?

If I have 73 threads, all calling a large function 'f', are the local 
values thread safe? Does each thread maintain it's own stack? Are the 
labels for local values stack-based?

Steve.



From bj_666 at gmx.net  Wed Oct 24 11:41:03 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 24 Oct 2007 15:41:03 GMT
Subject: How to find out which functions exist?
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
	<5o76tgFld8c9U10@mid.uni-berlin.de>
	<1193176280.003067.269950@i13g2000prf.googlegroups.com>
	<5o7bp5Fld8c9U12@mid.uni-berlin.de>
	<1193238542.066171.187950@q3g2000prf.googlegroups.com>
Message-ID: <5o97caFlf4doU4@mid.uni-berlin.de>

On Wed, 24 Oct 2007 15:09:02 +0000, mrstephengross wrote:

>> import module
>> from inspect import getmembers, isclass
>> classes = getmembers(module, isclass)
> 
> Ok, this makes sense. How can I do it inside the .py file I'm working
> on? That is, consider this:
> 
>   class A:
>     pass
>   class B:
>     pass
>   import inspect
>   print inspect.getmembers(<this file>, inspect.isclass) # how can I
> express <this file> ?

If you want the objects from the current module you can simply look at the
`globals()` dictionary.

from inspect import isclass
from itertools import ifilter

classes = set(ifilter(isclass, globals().itervalues()))

Ciao,
	Marc 'BlackJack' Rintsch


From byte8bits at gmail.com  Wed Oct 10 16:58:32 2007
From: byte8bits at gmail.com (brad)
Date: Wed, 10 Oct 2007 16:58:32 -0400
Subject: if then elif
In-Reply-To: <mailman.42.1192048768.927.python-list@python.org>
References: <mailman.42.1192048768.927.python-list@python.org>
Message-ID: <fejedt$qte$1@solaris.cc.vt.edu>

Shawn Minisall wrote:
> I just learned about if, then elif statements and wrote this program.  
> The problem is, it's displaying all of the possibilities even after you 
> enter a 0, or if the fat grams are more then the total number of 
> calories , that is supposed to stop the program instead of continuing on 
> with the print statements that don't apply.  Any idea's?  thanks

Two suggestions:

1. Use raw_input instead of input or errors will occur should users 
enter non-numeric characters.

>    #Prompt for calories
>    cal = input("Please enter the number of calories in your food: ")
> 
>    #Prompt for fat
>    fat = input("Please enter the number of fat grams in your food: ")

2. Convert cal and fat to ints or floats for your calculations... maybe 
something like this:

try:
    int(cal):
except ValueError,e
    sys.exit(str(e) + "Enter a number!!!")

This will catch things that cannot be converted to an int (bad user input)

Besides that, I'm pretty sure your calculations are wrong.


From craig.howard at earthlink.net  Mon Oct  8 12:16:39 2007
From: craig.howard at earthlink.net (Craig)
Date: Mon, 08 Oct 2007 09:16:39 -0700
Subject: Adding extra modules to a Pyinstaller build
Message-ID: <1191860199.974594.90450@19g2000hsx.googlegroups.com>

Hello all:

I need to add several Python standard modules to a Pyinstaller
project. The modules are not (and cannot be) explicitly imported in my
project script, so is there a way to add them to my .spec file in
order to allow Pyinstaller to search for them in PYTHONPATH and add
them to the project?

Regards,
Craig



From artur.siekielski at gmail.com  Fri Oct 12 03:13:15 2007
From: artur.siekielski at gmail.com (Artur Siekielski)
Date: Fri, 12 Oct 2007 00:13:15 -0700
Subject: Declarative properties
In-Reply-To: <1192143867.686910.210320@t8g2000prg.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<1192143867.686910.210320@t8g2000prg.googlegroups.com>
Message-ID: <1192173195.972260.144340@e9g2000prf.googlegroups.com>

George Sakkis wrote:
> By now you must have been convinced that default getters/setters is
> not a very useful idea in Python but this does not mean you can't do
> it;

It's a perfect summary of my thoughts after reading this thread. I
will use public attributes (with access customizable with properties)
and remember that in Python I can do everything :).
Thanks everybody.



From steve at holdenweb.com  Wed Oct 17 07:20:59 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 17 Oct 2007 07:20:59 -0400
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191929178.103375.308840@50g2000hsm.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
Message-ID: <ff4r6u$e8t$1@ger.gmane.org>

aaron.watters at gmail.com wrote:
> On Oct 8, 7:00 pm, "Delaney, Timothy (Tim)" <tdela... at avaya.com>
> wrote:
>> aaron.watt... at gmail.com wrote:
>>> ANNOUNCE:
>>>   NUCULAR fielded text searchable indexing
>> Does "NUCULAR" stand for anything? The (apparent) misspelling of
>> "nuclear" has already turned me off wanting to find out more about it.
>>
>> Tim Delaney
> 
> No, it doesn't stand for anything.  I guess it's not for you :(.
> Sorry about that.
> 
> (see the graphic at the bottom of http://nucular.sourceforge.net)
> 
It's a shame the name obscures rather than enlightens. Your stuff is 
usually pretty good - I still remember Gadfly fondly.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From stutzman at skywagon.kjsl.com  Sat Oct 27 00:29:51 2007
From: stutzman at skywagon.kjsl.com (Frank Stutzman)
Date: Sat, 27 Oct 2007 04:29:51 +0000 (UTC)
Subject: simple question on dictionary usage
Message-ID: <ffuerv$12ih$1@stationair.kjsl.com>



My apologies in advance, I'm new to python

Say, I have a dictionary that looks like this:

record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
        'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339',
        'E6': '1182', 'RPM': '996', 'C6': '311', 'C5': '300',
        'C4': '349', 'CLD': '0', 'E5': '1148', 'C2': '329',
        'MAP': '15', 'OIL': '167', 'HP': '19', 'E1': '1137',
        'MARK': '', 'E3': '1163', 'TIME': '15:43:54',
        'E2': '1169'}

>From this dictionary I would like to create another dictionary calld
'egt') that has all of the keys that start with the letter 'E'.  In
otherwords it should look like this:

egt = {'E6': '1182','E1': '1137','E4': '1157','E5': '1148',
       'E2': '1169','E3': '1163'}

This should be pretty easy, but somehow with all my googling I've
not found a hint.

Thanks in advance


-- 
Frank Stutzman




From python.list at tim.thechases.com  Tue Oct 16 19:17:35 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 16 Oct 2007 18:17:35 -0500
Subject: how to convert string to number?
In-Reply-To: <BLU107-W28931CCBBCC8FA5D810166B49C0@phx.gbl>
References: <mailman.68.1192547833.13605.python-list@python.org>	<1192556770.939866.249160@e9g2000prf.googlegroups.com>
	<BLU107-W45441799345E5042B783C8B49C0@phx.gbl>
	<4715086F.6080008@tim.thechases.com>
	<BLU107-W28931CCBBCC8FA5D810166B49C0@phx.gbl>
Message-ID: <4715468F.4090206@tim.thechases.com>

> I am new to Python and find it very interesting

welcome to the wonderful world of Python :)

> so I decided to try to port a big project from matlab to 
> python. To prove the value of the python, I need to find an 
> python way to do it.

A good exercise for learning Python.

> The input file contains many lines of data starts with a
> label. The data lengths are not the same and the data type is
> mixed with int and float. Some lines start with comment sign #
> need to be removed from the dictionary. The mixed int and
> float really cause me trouble to convert the data efficiently.
> I will try your suggestion


Just check the results on each line as you iterate over
them...something like

 results = {}
 for line in file('in.txt'):
   line = line.strip()
   if line.startswith('#'): continue
   key, values = line.split(None,1)
   results[key] = map(eval, values.split())

-tkc





From bignose+hates-spam at benfinney.id.au  Fri Oct 12 05:39:05 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 12 Oct 2007 19:39:05 +1000
Subject: EasyMock for python ?
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
	<87ve9d9icx.fsf@benfinney.id.au>
	<mailman.119.1192181396.927.python-list@python.org>
Message-ID: <87ve9c8yfa.fsf@benfinney.id.au>

(Please don't send me personal copies of messages that are sent to the
forum; I read via the newsgroup, and it's annoying to also get replies
in email when I didn't send an email message.)

"Simon Brunning" <simon at brunningonline.net> writes:

> On 10/12/07, Ben Finney <bignose+hates-spam at benfinney.id.au> wrote:
> > This means that the Mock object automatically supports any number
> > of attributes and methods by any reasonable names; the only setup
> > needed beyond creating the instance is to seed it with anything
> > you *don't* want returned as a Mock.
> 
> Now *that* is what the OP was talking about - that's not a Mock,
> that's a Stub. See <http://tinyurl.com/26hfjd>.

Because the minimock.Mock instance is instrumented to emit a message
any time one of its attributes is called, that output becomes the
playback ? which then, using doctest, can be compared against the
*expected* sequence of method calls.

That seems like it's a Mock to me: intended to assert that a specific
sequence of method calls with specific arguments was made on the mock
instance.

-- 
 \       "I love to go down to the schoolyard and watch all the little |
  `\   children jump up and down and run around yelling and screaming. |
_o__)          They don't know I'm only using blanks."  -- Emo Philips |
Ben Finney


From http  Wed Oct 24 21:36:15 2007
From: http (Paul Rubin)
Date: 24 Oct 2007 18:36:15 -0700
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
Message-ID: <7xodeouga8.fsf@ruckus.brouhaha.com>

Lou Pecora <pecora at anvil.nrl.navy.mil> writes:
> There might even be an array method that can be adapted to get the 
> product.  Is there a product method? (analogous to a sum method)

The "reduce" function which is being removed from python in 3.0.

import operator
def factorial(n):
  return reduce(operator.mul, xrange(1,n+1))


From smithsm at samuelsmith.org  Tue Oct 30 10:55:38 2007
From: smithsm at samuelsmith.org (Samuel M. Smith)
Date: Tue, 30 Oct 2007 08:55:38 -0600
Subject: Help ctypes on arm linux not compile
In-Reply-To: <fg6rik$8d3$1@ger.gmane.org>
References: <F6C48E66-B5CF-4E56-9879-63BA32797D04@samuelsmith.org>
	<fg6rik$8d3$1@ger.gmane.org>
Message-ID: <9498C447-EE58-4108-A3A6-C1B13150B7B9@samuelsmith.org>

Sorry, thats a typo. Its python 2.5.1. as the error messages indicate.

On 30 Oct 2007, at 02:55 , Thomas Heller wrote:

> Samuel M. Smith schrieb:
>> I have built python 1.5.1 from source for an embedded ARM9 debian
>> linux Sarge distribution but
>> ctypes doesn't build.  Anybody have any idea what the problem is? Do
>> I have to have the libffi package
>> installed.
>> See my errors below.
>
> ctypes won't work with Python 1.5 because it uses new style  
> classes, introduced in Python 2.2.
> It uses other, newer features additionally, so it requires Python  
> 2.3 at least.
>
> Then, the included libffi package doesn't support ARM, you need a  
> newer libffi
> version.
>
> I think that the current Python 2.5 sources, from SVN, should work.
>
> Thomas
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list

**********************************************************************
Samuel M. Smith Ph.D.
2966 Fort Hill Road
Eagle Mountain, Utah 84005-4108
801-768-2768 voice
801-768-2769 fax
**********************************************************************
"The greatest source of failure and unhappiness in the world is
giving up what we want most for what we want at the moment"
**********************************************************************




From deets at nospam.web.de  Thu Oct 25 17:44:32 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 25 Oct 2007 23:44:32 +0200
Subject: elementtree w/utf8
In-Reply-To: <ffr11p$unf$1@foggy.unx.sas.com>
References: <ffr11p$unf$1@foggy.unx.sas.com>
Message-ID: <5och2gFm7ku1U2@mid.uni-berlin.de>

Tim Arnold schrieb:
> Hi, I'm getting the by-now-familiar error:
> return codecs.charmap_decode(input,errors,decoding_map)
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa9' in position 
> 4615: ordinal not in range(128)
> 
> the html file I'm working with is in utf-8, I open it with codecs, try to 
> feed it to TidyHTMLTreeBuilder, but no luck. Here's my code:
> from elementtree import ElementTree as ET
> from elementtidy import TidyHTMLTreeBuilder
> 
>             fd = codecs.open(htmfile,encoding='utf-8')
>             tidyTree = 
> TidyHTMLTreeBuilder.TidyHTMLTreeBuilder(encoding='utf-8')
>             tidyTree.feed(fd.read())
>             self.tree = tidyTree.close()
>             fd.close()
> 
> what am I doing wrong? Thanks in advance.

Being to clever for your own good.. sorry to say so. But 
TidyHTMLTreeBuilder takes the encoding for a reason: it expects a 
byte-string that it will decode itself.

But you decode first, creating a unicode-object. When feeding that to 
the string-expecting feed-method, python attempts a conversion to a 
byte-string using the default-encoding.

Not using codecs but a file instead should do the trick.

diez


From bdesth.quelquechose at free.quelquepart.fr  Thu Oct  4 11:44:17 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 17:44:17 +0200
Subject: Adding behaviour for managing "task" dependencies
In-Reply-To: <mailman.1566.1191572719.2658.python-list@python.org>
References: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
	<mailman.1566.1191572719.2658.python-list@python.org>
Message-ID: <4707f66a$0$14339$426a74cc@news.free.fr>

David a ?crit :
>>Any thoughts would be most appreciated, though I would like to stress
>>that I don't think Python should support the syntax I'm proposing I'd
>>just like to know if I can extend a copy of it to do that.
>>
> 
> 
> You can use syntax like this:
> 
> class MyJob1(Job):
>     depends(MyJob2)
>     depends(MyJob3)
> 
(snip)
> (where 'depends' is a DSL-like construct. See Elixir
> (elixir.ematia.de) for an example of how to implement DSL statements
> like "depends". Check their implementation of the "belongs_to"
> statement.

+1 on this. I've payed a bit with elixir's 'statements' API, and while 
it's relying on a (in)famous hack, it does the job.

(snip)


From draganve at gmail.com  Mon Oct 15 13:22:06 2007
From: draganve at gmail.com (draganw)
Date: Mon, 15 Oct 2007 10:22:06 -0700
Subject: Hardware components
Message-ID: <1192468926.236689.58510@q3g2000prf.googlegroups.com>

Hardware components
http://comp-components.blogspot.com/



From mccredie at gmail.com  Fri Oct 12 16:21:19 2007
From: mccredie at gmail.com (Matt McCredie)
Date: Fri, 12 Oct 2007 13:21:19 -0700
Subject: Moving objects in Tkinter
In-Reply-To: <23614.5396.qm@web38409.mail.mud.yahoo.com>
References: <23614.5396.qm@web38409.mail.mud.yahoo.com>
Message-ID: <9e95df10710121321w6479461el48174aeeddc69fa3@mail.gmail.com>

On 10/12/07, Evjen Halverson <evjenh at yahoo.com> wrote:
>   I have tried to make a Tkinter program make a rectangle move down the
> window, but did not succeed. All it does is make a rectangle trail.
>    What am I doing wrong?
>
>  from Tkinter import*
>  root = Tk()
>  RectangleColor='orange'
>  Background=tk_rgb = "#%02x%02x%02x" % (100, 255, 100)
>  root.geometry('1000x800+0+0')
>  root.title("Moving Object Test")
>  w = Canvas (root,width=1000,height=800,bg=Background)
>  w.grid()
>  import time
>  t1=time.time()
>  t2=t1
>  ti=t2-t1
>  x=100
>  y=0
>  a=0
> rect=Canvas.create_rectangle(w,x,y,200,100,fill=RectangleColor)
>
>
>
>  def CLS():
>
> cls=Canvas.create_rectangle(w,0,0,1000,800,fill=Background)
>  while ti<10:
>      t2=time.time()
>      ti=t2-t1
>      y=y+10
>
> Canvas.create_rectangle(w,x,y,200,100,fill=RectangleColor)
>
>      st1=time.time()
>      st2=st1
>      subti=st2-st1
>      root.mainloop()
>      time.sleep(100)
>
>      while subti<1:
>          st2=time.time()
>          subti=st2-st1
>          a=a+1
>      CLS()
>
>  #
> rect=Canvas.create_rectangle(w,x,y,1000,800,fill=RectangleColor)
>
>
>
>  root.mainloop()
>
>  quit()

Tkinter canvas works a little different than say, openGL or pygame.
You don't have to draw the rectangle over and over for each frame.
Every time you call create_rectangle you are creating another
rectangle. Another thing to note is that Tkinter has a built in
scheduler. You don't need to use time. The way you are calling Canvas
looks a little funny to me also.

Anyway, here is a simple example:

[code]
import Tkinter as tk

rectanglecolor = 'orange'
background = tk_rgb = "#%02x%02x%02x" % (100, 255, 100)
disty = 6

root = tk.Tk()
root.geometry('1000x800+0+0')
root.title("Moving Object Test")

can = tk.Canvas (root,width=1000,height=800,bg=background)
can.grid()

# note that rect is actually just an integer that is used to identify
that shape in the
# context of the canvas that it was created within.
rect = can.create_rectangle(400,0,600,200,fill=rectanglecolor)

for i in range(100):
    # move the rectangle 0 in the x direction and disty in the y direction.
    can.move(rect, 0, disty)
    root.update() # update the display
    root.after(30) # wait 30 ms

root.mainloop() # this just keeps the window open
[/code]

Matt


From dak at gnu.org  Wed Oct  3 05:28:18 2007
From: dak at gnu.org (David Kastrup)
Date: Wed, 03 Oct 2007 11:28:18 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no>
Message-ID: <85ve9ov971.fsf@lola.goethe.zz>

bcd at pvv.ntnu.no (Bent C Dalager) writes:

> In article <fdtsfu$iq6$03$1 at news.t-online.com>,
> Frank Goenninger  <frgo at goenninger.net> wrote:
>>
>>Well, I didn't start the discussion. So you should ask the OP about the 
>>why. I jumped in when I came across the so often mentioned "hey, it's 
>>all well defined" statement was brought in. I simply said that if that 
>>"well-definedness" is against "common understanding" then I don't give 
>>a damn about that clever definitions. Because I have to know that there 
>>are such definitions - always also knowing that free is not really 
>>free.
>
> "Liberated" is a valid meaning of the word "free".

No.  It is a valid meaning of the word "freed".

Xpost+Fup2 gnu.misc.discuss: this is not really relevant for most of
the touched Usenet groups.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum


From dave at boost-consulting.com  Thu Oct 25 16:53:04 2007
From: dave at boost-consulting.com (David Abrahams)
Date: Thu, 25 Oct 2007 16:53:04 -0400
Subject: [Windows embedding] sys.path not properly initialized (was:
	PyImport_ImportModule/embedding: surprising behaviors)
References: <mailman.5359.1174435375.32031.python-list@python.org>
	<1174767636.080416.74740@n59g2000hsh.googlegroups.com>
Message-ID: <87640usyq7.fsf_-_@grogan.peloton>


on Sat Mar 24 2007, "Ziga Seilnacht" <ziga.seilnacht-AT-gmail.com> wrote:

> David Abrahams wrote:
>> I'm seeing highly surprising (and different!) behaviors of
>> PyImport_ImportModule on Linux and Windows when used in a program with
>> python embedding.
>>
>> On Linux, ...

<Linux working OK now>

Unfortunately, nothing you have written below or on the pages you
reference seems to help in Windows.  Here's a simple program that
demonstrates:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: import.c
Type: text/x-csrc
Size: 302 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071025/18df94c6/attachment.c>
-------------- next part --------------

The output is:

  'import site' failed; use -v for traceback
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
  ImportError: __import__ not found

>> I can work around the problem by setting PYTHONPATH to point to the
>> python library directory:
>>
>>   set PYTHONPATH=c:\Python25\Lib
>
> This happens because Python calculates the initial import path by
> looking for an executable file named "python" along PATH. 

C:\Python25, which contains python.exe, is in the PATH.  If it's
really looking for an executable named "python" along PATH, that can
never succeed on Windows, since (I think) only files ending in .exe,
.bat, and .cmd are executable there.

> You can
> change this by calling Py_SetProgramName(filename) before calling
> Py_Initialize(). This is documented in API reference manual:

Uncomment that line in my program above and you'll see it makes
absolutely no difference.

> http://docs.python.org/api/embedding.html
>
> That page also describes a few hooks that you can overwrite to
> modify the initial search path. They are described in more detail
> on this page:
>
> http://docs.python.org/api/initialization.html

The only thing mentioned there that seems to have any effect at all is

  set PYTHONHOME=C:\Python25

and even then, it only eliminates the first line of the error, which
then reads:

  Traceback (most recent call last):
    File "<string>", line 1, in <module>
  ImportError: __import__ not found

My only known workaround is to set PYTHONPATH.  This just doesn't seem
right; isn't anyone doing embedding under Windows?

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com

From http  Fri Oct 12 02:01:55 2007
From: http (Paul Rubin)
Date: 11 Oct 2007 23:01:55 -0700
Subject: Fwd: NUCULAR fielded text searchable indexing
References: <mailman.59.1192065699.927.python-list@python.org>
	<7xtzoynm64.fsf@ruckus.brouhaha.com>
	<1192108745.766895.156050@19g2000hsx.googlegroups.com>
	<7xlka9629c.fsf@ruckus.brouhaha.com>
	<1192123786.851903.102830@v3g2000hsg.googlegroups.com>
Message-ID: <7xsl4grhv0.fsf@ruckus.brouhaha.com>

aaron.watters at gmail.com writes:
> http://www.xfeedme.com/nucular/gut.py/go?FREETEXT=w
> (w for "web") we get 6294 entries which takes about 500ms on
> a cold index and about 150ms on a warm index.  This is on a very
> active shared hosting machine.

That's reasonable speed, but is that just to do the set intersections
and return the size of the result set, or does it retrieve the actual
result set?  It only showed 20 results on a page.  I notice that each
book in the result list has an ID number.  Say those are stored fields
in Nucular: how long does it take to add up all the ID numbers for the
results of that query?  I.e. the requirement is to actually access
every single record in order to compute the sum.  This is similar to
what happens with faceting.

> You are right that you might want to
> use more in-process memory for a really smart, multi-faceted relevance
> ordering or whatever, but you have to be willing to pay for it
> in terms of system resources, config/development time, etcetera.
> If you want cheap and easy, nucular might be good enough, afaik.

I used a cave-man approach with solr, which is I have an external
process keeping the indexes warm by simply reading something from each
page a few times an hour.  That is enough to pull 10k or so results a
second from a query.  Without the warming, getting that many results
takes over a minute.  I do think much better approaches are possible
and solr/lucene is by no means the be-all and end-all.  I don't know
if solr is using mmap or actual seek system calls underneath.

> Regarding the 30 million number -- I bet google does
> estimations and culling of some kind (not really looking at all 10M).

Probably.

> I'm not interested in really addressing the "google" size of data set
> at the moment.

Right, me neither, but a few 10's of GB of indexes is not all that
large these days.  

> >  http://www.newegg.com/Product/Product.aspx?Item=N82E16820147021
> holy rusty metal batman! way-cool!

Heh, check out the benchmark graphs:

  http://www.tomshardware.com/2006/09/20/conventional_hard_drive_obsoletism/page7.html


From matthieu.brucher at gmail.com  Mon Oct 15 16:54:08 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Mon, 15 Oct 2007 22:54:08 +0200
Subject: sqlite and TemporaryFile under Windows
Message-ID: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>

Hi,

I want to create a temporary database that is downloaded for the net. So I
want to use a temporary file that will be deleted at the end of my program.
For this, I wanted to use tempfile.TemporaryFile. The problem with Windows
is that I can't give to sqlite3.connect() the file neither can I give its
name (if I use NamedTemporaryFile). Is there a solution somewhere ?

Matthieu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071015/fc6220fe/attachment.html>

From bblais at bryant.edu  Thu Oct 18 08:42:26 2007
From: bblais at bryant.edu (Brian Blais)
Date: Thu, 18 Oct 2007 08:42:26 -0400
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <1192708047.649155.272010@z24g2000prh.googlegroups.com>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<1192666776.3244.12.camel@localhost.localdomain>
	<mailman.166.1192705915.13605.python-list@python.org>
	<1192708047.649155.272010@z24g2000prh.googlegroups.com>
Message-ID: <BD3CC65A-6871-4115-B75C-8982DFDE6F1C@bryant.edu>

On Oct 18, 2007, at Oct 18:7:47 AM, Paul Hankin wrote:

> On Oct 18, 12:11 pm, "Amit Khemka" <khemkaa... at gmail.com> wrote:
>> Why not just use enumerate ?
>>
>> clvalues = ["Even", "Odd"]
>> for i, (id, name) in enumerate(result):
>>     stringBuffer.write('''
>>     <tr class="%s">
>>            <td>%d</td>
>>            <td>%s</td>
>>      </tr>
>>      '''
>>     %
>>     (clvalues[i % 2], id, name))
>
> I like this code: straightforward and pragmatic.

Although the itertools is probably the way to go here, I've used the  
following construct, especially in two-player games.  I like the  
readability of it:

value='Even'
other_value='Odd'
for i, (id,name) in enumerate(result):
     stringBuffer.write('''
     <tr class="%s">
         <td>%d</td>
         <td>%s</td>
     </tr>
     ''' % (value,id,name)


     value,other_value=other_value,value   # swap the value





			bb

-- 
Brian Blais
bblais at bryant.edu
http://web.bryant.edu/~bblais



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071018/b72a11f7/attachment.html>

From besturk at gmail.com  Wed Oct 31 16:47:17 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 31 Oct 2007 13:47:17 -0700
Subject: 3 number and dot..
In-Reply-To: <1193863088.980629.127030@o38g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<1193863088.980629.127030@o38g2000hse.googlegroups.com>
Message-ID: <1193863637.854997.178030@v3g2000hsg.googlegroups.com>

On Oct 31, 10:38 pm, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 31, 2:58 pm, Abandoned <best... at gmail.com> wrote:
>
> > Hi..
> > I want to do this:
> > for examle:
> > 12332321 ==> 12.332.321
>
> > How can i do?
> >>> x = (12332321,)
> >>> while (x[0]>0): x=divmod(x[0],1000)+x[1:]
> ...
> >>> x
> (0, 12, 332, 321)
> >>> ".".join(map(str,x[1:]))
>
> '12.332.321'
>
> -- Paul

It's very good thank you paul!



From inq1ltd at inqvista.com  Tue Oct  2 10:47:08 2007
From: inq1ltd at inqvista.com (jim-on-linux)
Date: Tue, 02 Oct 2007 10:47:08 -0400
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <200710021047.08908.inq1ltd@inqvista.com>

On Monday 01 October 2007 21:04, bramble wrote:
> What is the backstory to why Python includes Tk bindings, as
> opposed to some other set of bindings?
>
> I've written a few little Tkinter-based apps, and it's nice and
> simple. I like it well enough. That said though, I keep feeling the
> gravitational pull toward GTK+. I've been meaning to get the whole
> glade+gtk+python thing happening with my own projects, as soon as
> time allows. Is there resistance in the upper Python echelons to
> GTK because of its LGPL licensing?
>
> Reading Alex's Nutshell book, right off the bat he comments that
> "The most popular Python GUI toolkit today is probably wxPython".
> But then he goes on for 45 pages on Tkinter... Seems like he wanted
> to write that chapter on wx instead...
>
> WxWidgets, the last time I looked at it, seemed awfully like MS
> Window's MFC. The licensing seemed vague at the time, and it looks
> like wx contains an extra layer of GUI library, so I didn't spend
> any real time on it. But, regardless, it seems to get good press
> among python folk (I think I remember ESR noting how it was his GUI
> toolkit of choice).
>
> PyQt has had that issue (IIRC) about needing to pay for it for
> commercial apps, so I can see how there might be resistance to it
> being considered the "standard Python GUI toolkit".
>
> So, it would seem to me that Tkinter *might* remain in Python
> proper, but that I probably wouldn't see much effort put into it.
> Well, the Python standard library docs tell a different story.
> There's stuff in there about Tix, ScrolledText, turtle, and then
> the "other GUI packages" doc page goes on about Python megawidgets
> (Tk-based) and Tkinter3000 Widget Construction Kit (WCK). Wow.
> Looks like Tkinter is still having serious support -- even though
> in that same doc at the bottom notes, "PyGTK, PyQt, and wxPython,
> all have a modern look and feel and far more widgets and better
> documentation than Tkinter."
>
> So, that leaves me wondering, why is Tkinter still getting so much
> focus in the Python standard library?
>
> Maybe a better question is, how has Tk managed to keep beating up
> the newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?

Tkinter's secret weapon are pgmrs like me that would rather put 
pressure on the Tk people to improve what already is working.  Update 
and improve Tk, change the look and feel of it, add features.  Let me 
spend my time programming not trying to make existing programs 
compatible with the unknown. (Some change to who knows what.)   

On the other hand, questions like yours are exactly what keeps the 
pressure on the Tkinter people to upgrade.  I think they got the 
message with the recent announcement of some long awaited changes. 
 

jim-on-linux
http://inqvista.com















From panguohualove at sina.com  Fri Oct 12 00:28:48 2007
From: panguohualove at sina.com (panguohua)
Date: Thu, 11 Oct 2007 21:28:48 -0700
Subject: a good website for softwares,sports,movies and music ,sex etc.
Message-ID: <1192163328.174710.31170@k35g2000prh.googlegroups.com>

www.space666.com


good



From besturk at gmail.com  Thu Oct 25 17:00:37 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 25 Oct 2007 14:00:37 -0700
Subject: threading problem..
Message-ID: <1193346037.742074.16730@z9g2000hsf.googlegroups.com>

Hi..
I want to threading but i have a interesting error..
==========
class SelectAll(threading.Thread):
   def __init__(self, name):
      threading.Thread.__init__(self)
      self.name = name #kelime

   def run(self):
    ....
    ....
    self.result=...
nglist=[]
current = SelectAll(name)
nglist.append(current)
current.start()
 for aaa in nglist:
      aaa.join()

=============

and it gives me this error:
    aaa.join()

AttributeError: 'dict' object has no attribute 'join'


What is the problem i can't understand this error :(



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct 12 03:42:28 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 12 Oct 2007 09:42:28 +0200
Subject: Declarative properties
In-Reply-To: <mailman.99.1192124809.927.python-list@python.org>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>	<5n6j5nFghr61U4@mid.uni-berlin.de>	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
Message-ID: <470f2522$0$12106$426a74cc@news.free.fr>

Dan Stromberg a ?crit :
> On Thu, 11 Oct 2007 13:46:12 +0000, Marc 'BlackJack' Rintsch wrote:
> 
>> On Thu, 11 Oct 2007 13:04:53 +0000, Artur Siekielski wrote:
>>
>>> On Oct 11, 2:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>>>> But why?  Default getters and setters are unnecessary and if you need
>>>> something other than the default you need to write it anyway more
>>>> explicitly.
>>> I see some problems with your approach:
>>>
>>> 1. If I use instance field 'name' which is accessed directly by other
>>> classes,
>>> and later I decide to implement nonstandard getter, I must refactor
>>> 'Person' class
>>> and in some places change 'name' to '_name' (assuming this is now the
>>> field's name).
>>> The problem is that I cannot automatically change 'name' to '_name'
>>> everywhere, because
>>> in some places I want public property value (eg. validated and
>>> formatted), and in other
>>> places raw property value.
>> So what?  Otherwise you carry *always* the baggage of a public property
>> and a private attribute whether you need this or not.  At least for me it
>> would be unnecessary in most cases.
> 
> That "baggage" of carrying around "unneeded" methods is something the
> computer carries for you - IE, no big deal in 99.99% of all cases.

1/ Accessing the value of a property is not free. Accessing a plain 
attribute is much cheaper.

2/ cluttering the class's namespace with useless names and the source 
code with useless code is definitively not a good thing.

> The "baggage" of possibly fixing (AKA "generalizing") how your attributes
> are accessed is something you lug around while your deadline looms.
> 
> Here's some code that defines such methods for you:
> 
> #!/usr/bin/env python
> 
> def gimme_set_get(foo, attribute):
>    lst = [ \
>       'def set_%s(self, value):' % attribute, \
>       '  self._%s = value' % attribute, \
>       'def get_%s(self):' % attribute, \
>       '  return self._%s' % attribute, \
>       'foo.set_%s = set_%s' % (attribute, attribute), \
>       'foo.get_%s = get_%s' % (attribute, attribute) \
>       ]
>    s = '\n'.join(lst)
>    code = compile(s, '<string>', 'exec')
>    eval(code)

Yuck. This is not only a waste of time, but also badly coded. have mercy 
and at least learn how to properly use lexical scoping and closures.

> class foo:
>    def __init__(self, value):
>       self.public_value = value
> gimme_set_get(foo, 'via_accessor_method_only')
> 
> f = foo(1)
> f.set_via_accessor_method_only(1/9.0)
> print f.get_via_accessor_method_only()
> 
> print dir(f)
> 
Correction: this is not only a waste of time and badly coded, this is 
also misleading and braindead.



From tjreedy at udel.edu  Tue Oct  2 10:41:11 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 2 Oct 2007 10:41:11 -0400
Subject: sorteddict [was a PEP proposal, but isn't anymore!]
References: <mailman.1332.1191241504.2658.python-list@python.org>
	<Xns99BC8BF9F1899duncanbooth@127.0.0.1>
Message-ID: <fdtla7$fse$1@sea.gmane.org>


"Duncan Booth" <duncan.booth at invalid.invalid> wrote in message 
news:Xns99BC8BF9F1899duncanbooth at 127.0.0.1...
| Subclassing doesn't have to imply a common implementation, just a common
| interface.

True, but in Python, subclassing is usually done to reuse implementation. 
Interface subclassing is usually from a common abstract base class (which 
will be better supported in Py3).. 





From mccredie at gmail.com  Sat Oct 20 01:45:50 2007
From: mccredie at gmail.com (Matt McCredie)
Date: Fri, 19 Oct 2007 22:45:50 -0700
Subject: __main__ : What is this?
In-Reply-To: <op.t0g407o7x6zn5v@gabriel2.softlabbsas.com.ar>
References: <mailman.234.1192836549.13605.python-list@python.org>
	<1192839982.488484.102860@e34g2000pro.googlegroups.com>
	<op.t0g407o7x6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <9e95df10710192245n44a5a1ob12bb4d376bb3f6f@mail.gmail.com>

> En Fri, 19 Oct 2007 21:26:22 -0300, Matimus <mccredie at gmail.com> escribi?:
>
> > The common pattern:
> >
> > if __name__ == "__main__":
> >   # do stuff
> >
> > IMHO better written:
> >
> > if "__main__" == __name__:
> >     # do stuff
>
> I'm intrigued why do you feel the second alternative is better.
> Which is your native language? In English (and Spanish, and many others
> but still not in the majority) the usual ordering is "subject-verb-object"
> or SVO, which matches the first alternative: "If the name is __main__, do
> this..."
> As all the languages I know (not so many!) are SVO, I can't think of any
> equivalent of the second form [that I could say it's better than the first]

English is my native language (and only, I'm American :|). The reason
I like the second version better is simply that:

variable == literal

can easily be mis-written as

variable = literal

I suppose that isn't a huge issue in Python, since most of the time
comparisons happen within if and for statements. Even if it is within
a functions parameters it will raise a SyntaxError exception. There is
still the case where one might write something like this:

a = b == 'c'

or, as I prefer:

a = 'c' == b

It is just habit from writing so much C code that way. In C the
reasoning is that if you have mistyped it, you will catch the issue at
compile time instead of runtime (which is potentially much more
difficult to debug). I'm used to seeing that pattern. In terms of
natural language I do agree with you. It really is just my _humble_
opinion. I can't make a huge argument for it in Python. To be honest,
I didn't give it much thought before I wrote it. I am simply used to
doing it that way, and being irked whenever I see it written the other
way in C or C++ (and perhaps unjustifiably Python).

Matt


From timaranz at gmail.com  Wed Oct  3 15:29:52 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Wed, 03 Oct 2007 12:29:52 -0700
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <4703dfff$0$30966$426a74cc@news.free.fr>
References: <4703dfff$0$30966$426a74cc@news.free.fr>
Message-ID: <1191439792.666146.217150@d55g2000hsg.googlegroups.com>

On Oct 4, 7:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
point... at invalid.org> wrote:
> Hi,
> I'am very newbie in Python.
> For the moment I'am trying to convert an unicode character to his uppercase
> unaccented character.
> By example with locale fr_FR:
> a,A,?,? should return A
> o,O,?,? should return O
> ?,? should return ?
> i,I,?,? should return I
>
> Have you some suggestions ?
>
> Thank.

Unicode strings have an upper() method - try that.  I'm think it
should work properly with your locale - it doesn't give the expected
result for me with an english locale.





From larsgwest at gmail.com  Wed Oct 10 01:57:56 2007
From: larsgwest at gmail.com (lgwe)
Date: Tue, 09 Oct 2007 22:57:56 -0700
Subject: Problem with argument parsing
In-Reply-To: <5n1keaFfoj0eU1@mid.uni-berlin.de>
References: <1191940442.108905.292810@50g2000hsm.googlegroups.com>
	<5n1keaFfoj0eU1@mid.uni-berlin.de>
Message-ID: <1191995876.142576.242160@50g2000hsm.googlegroups.com>

On 9 Okt, 17:18, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> lgwe wrote:
> > I have a python-script: myscript, used to start a program on another
> > computer and I use OptionParser in optpars.
> > I use it like this: myscript -H host arg1 -x -y zzz
> > I would like OptionParser to ignore all arguments after arg1, because
> > these are options that should be used by the program started on the
> > oter computer arg1 -x -y zzz.
> > One solution is to write: myscript -H host "arg1 -x -y zzz"
> > But is it in some way possible to instruct OptionParser to ignore -x -
> > y zzz without  the "..."?
>
> Use -- to separate arguments to be parsed by OptionParser from the
> to-be-ignored-ones, which is documented btw.
>
> Diez

Thanks!
I understand that this must be documented.
But I can't find if anywhere in http://docs.python.org/lib/module-optparse.html.
(maybee I just cant see it, but it is there)



From iansan at gmail.com  Wed Oct 17 20:31:28 2007
From: iansan at gmail.com (IamIan)
Date: 17 Oct 2007 17:31:28 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192529804.759199.76350@i13g2000prf.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
Message-ID: <1192641075.561095.85600@z24g2000prh.googlegroups.com>

Thank you for the replies. After a lot of research I tracked down the
issue. I was using the CGI to build all of the pages for the site,
then filling in content with .innerHTML= as users clicked on tabs.
Since I wanted to place the Google Ads in different parts of each
page, the Google Ads JavaScript was in each page chunk being
dynamically placed with .innerHTML.

It turns out that JavaScript isn't executed when it is placed in a
page via .innerHTML. I tried some tricks to execute it after it was
added to the page (eval, appendChild) but it still didn't work. The
Google Ads JavaScript is very touchy and their agreement is very
strict; it wasn't even clear that what I was doing was in line with
it, so I broke the site up into multiple CGI pages and now it works
fine.

One CGI question - since all of my CGIs are spitting out HTML is their
source code safe? wget and linking to the source deliver the output
HTML. Are there any other methods of trying to steal the source CGI I
need to protect against?

Thank you.



From mathieu.malaterre at gmail.com  Thu Oct 18 12:46:16 2007
From: mathieu.malaterre at gmail.com (mathieu)
Date: Thu, 18 Oct 2007 16:46:16 -0000
Subject: strptime and microseconds
In-Reply-To: <1192725397.632337.73420@k35g2000prh.googlegroups.com>
References: <1192723239.854957.257280@v29g2000prd.googlegroups.com>
	<1192725397.632337.73420@k35g2000prh.googlegroups.com>
Message-ID: <1192725976.909230.265280@q3g2000prf.googlegroups.com>

On Oct 18, 6:36 pm, mathieu <mathieu.malate... at gmail.com> wrote:
> On Oct 18, 6:00 pm, mathieu <mathieu.malate... at gmail.com> wrote:
>
>
>
> > Hi there,
>
> >   I am trying to use strptime to parse my microseconds but I was not
> > able the documentation for it. The only list I found was:
>
> >  http://docs.python.org/lib/module-time.html
>
> >  So I can get seconds with %S, but nowhere is there a microsecond
> > symbol...
>
> > Thanks for pointer to doc,
> > -Mathieu
>
> > s1 = "20070619"
> > s2 = "150348.62"
> > s = s1+s2
> > d = datetime(*strptime(s, "%Y%m%d%H%M%S.%?"))
>
> Getting closer...
>
> s1 = "20070619"
> s2 = "115344.51"
> s3 = "115445.123456"
>
> ms2 = eval(s2) % 1
> mms2 = int(ms2 * 1000000 + 0.5)
> ms3 = eval(s3) % 1
> mms3 = int(ms3 * 1000000 + 0.5)
>
> s = s1 + s2
> d1 = datetime(*strptime(s[:12], "%Y%m%d%H%M%S")[0:6])
> d1.replace(microsecond = mms2)
> #print d1.microsecond
>
> s = s1 + s3
> d2 = datetime(*strptime(s[:12], "%Y%m%d%H%M%S")[0:6])
> d2.replace(microsecond = mms3)
> #print d2.microsecond
>
> d = d2 - d1
> print d.seconds
> print d.microseconds
>
> why would d.microseconds be 0 ??
>
> Thanks,
> -Mathieu


D'oh !

Ok final version is simply:

s1 = "20070619"
s2 = "115344.51"
s3 = "115446.123456"

ms2 = eval(s2) % 1
mms2 = int(ms2 * 1000000 + 0.5)
ms3 = eval(s3) % 1
mms3 = int(ms3 * 1000000 + 0.5)

s = s1 + s2
d1 = datetime(*strptime(s[:14], "%Y%m%d%H%M%S")[0:6])
d1 = d1.replace(microsecond = mms2)
#
s = s1 + s3
d2 = datetime(*strptime(s[:14], "%Y%m%d%H%M%S")[0:6])
d2 = d2.replace(microsecond = mms3)
#
d = d2 - d1
print d.seconds
print d.microseconds

sorry for the noise :))
-Mathieu






From steveo at syslang.net  Wed Oct 10 10:49:07 2007
From: steveo at syslang.net (Steven W. Orr)
Date: Wed, 10 Oct 2007 10:49:07 -0400 (EDT)
Subject: Version specific or not?
Message-ID: <alpine.LFD.0.9999.0710101020150.26552@saturn.syslang.net>

We have an app and I'm trying to decide where the app should be 
installed. The question is whether it should be site-specific or not, as 
in

/usr/lib/python2.3/site-packages
or
/usr/lib/site-python

The latter would solve a lot of problems for me.

In the case of emacs, most stuff seems to go into $EMACS/site-lisp and far 
less into $EMACS/$current_version/site-lisp. The python site dirs seem to 
be the opposite. We have lots of stuff in the 2.3/site-packages and very 
little in the site-python directory.

If there are multiple versions of python installed on the same machine, 
having a shebang that just looked for /usr/bin/python would make my life a 
lot easier.

* Since we distribute .pyo files, is there an issue if the .pyo was built 
with 2.3.5 and then executed by 2.4 or 2.5?

* Are there any caveats?

TIA

-- 
Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net


From surekap at gmail.com  Wed Oct 24 17:08:31 2007
From: surekap at gmail.com (Prateek)
Date: Wed, 24 Oct 2007 14:08:31 -0700
Subject: building a linux executable
In-Reply-To: <1193228750.497591.202330@y27g2000pre.googlegroups.com>
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
	<1193228750.497591.202330@y27g2000pre.googlegroups.com>
Message-ID: <1193260111.816092.258690@y27g2000pre.googlegroups.com>

On Oct 24, 5:25 pm, Paul Boddie <p... at boddie.org.uk> wrote:
> On 24 Okt, 14:20, Bjoern Schliessmann <usenet-
>
> mail-0306.20.chr0n... at spamgourmet.com> wrote:
>
> > I'm sorry I cannot help, but how many linux distros have no python
> > installed or no packages of it?
>
> It's not usually the absence of Python that's the problem. What if
> your application uses various extension modules which in turn rely on
> various libraries (of the .so or .a kind)? It may be more convenient
> to bundle all these libraries instead of working out the package
> dependencies for all the target distributions, even if you know them
> all.
>
> Paul

Thanks Paul,

So I've bundled all the extension modules (cx_Freeze helped me out
with that). Here is what I did:

if sys.platform.startswith("linux"):
    import [add a bunch of imports here]

This import statement immediately imports all modules which will be
required. Hence, cx_Freeze is easily able to find them and I can put
all the .so files with the distro.

The problem is that some of these .so files (_hashlib.so) are hard-
linked to /lib/libssl.so and /lib/libcrypto.so. I cannot simply just
copy those (libssl/libcrypto) files into the distribution folder (and
cx_Freeze won't do anything about them because they are not Python
modules). I need a way to figure out how to get _hashlib.so to refer
to a libssl.so which is in the same directory (I would have thunk that
it should use the PATH environment variable - apparently not).

This seems to be a simple enough problem, doesn't it??

NB: Has the community come up with a better way to distribute Python
executables on linux? I'd also like to hear from folks who've got
linux distributables of medium to large scale python programs...



From aaron.watters at gmail.com  Wed Oct 24 09:32:00 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Wed, 24 Oct 2007 06:32:00 -0700
Subject: ANNOUNCE: NUCULAR 0.1 Fielded Full Text Indexing [BETA]
Message-ID: <1193232720.502635.10330@q3g2000prf.googlegroups.com>

ANNOUNCE: NUCULAR 0.1 Fielded Full Text Indexing [BETA]

Nucular is a system for creating disk based full text indices
for fielded data. It can be accessed via a Python API
or via a suite of command line interfaces, and an example
Web based archive browser.

The 0.1 release adds a bunch of features and also improves
the internal data structures significantly.  Most importantly
the cosmetics of the example web interface isn't as
horrible as it was before :).

I'm calling it a beta because I think the core is pretty
stable and near future releases are likely to provide
enhancements or minor bugfixes rather than major changes.

Read more and download at:
   http://nucular.sourceforge.net

ONLINE DEMOS:

Python source search:
 http://www.xfeedme.com/nucular/pydistro.py/go?FREETEXT=malodorous+parrot
Mondial geographic text search:
 http://www.xfeedme.com/nucular/mondial.py/go?attr_name=ono
Gutenberg book search:
 http://www.xfeedme.com/nucular/gut.py/go?attr_Comments=immoral+english

BACKGROUND:

Nucular is intended to help store and retrieve
searchable information in a manner somewhat similar
to the way that "www.hotjobs.com" stores and
retrieves job descriptions, for example.

Nucular archives fielded documents and retrieves them
based on field value, field prefix, field word prefix,
or full text word prefix, field range, or combinations
of these.

Features:

 -- Nucular is very light weight. Updates and accesses
    do not require any server process or other system
    support such as shared memory locking.

 -- Nucular supports concurrency. Arbitrary concurrent
    updates and accesses by multiple processes or threads
    are supported, with no possible locking issues.

 -- Nucular indexes and retrieves large collections quickly.

I hope you like.
   -- Aaron Watters

===
Q: Why is a giraffe's neck so long?
A: Because its head is so far from its body.



From tim.arnold at sas.com  Fri Oct 19 09:03:30 2007
From: tim.arnold at sas.com (Tim Arnold)
Date: Fri, 19 Oct 2007 09:03:30 -0400
Subject: image resize question
References: <ff8a9a$i5d$1@foggy.unx.sas.com>
	<1192741477.416784.279530@t8g2000prg.googlegroups.com>
Message-ID: <ffa9uv$dim$1@foggy.unx.sas.com>

"Matimus" <mccredie at gmail.com> wrote in message 
news:1192741477.416784.279530 at t8g2000prg.googlegroups.com...
> On Oct 18, 11:56 am, "Tim Arnold" <tim.arn... at sas.com> wrote:
>> Hi, I'm using the Image module to resize PNG images from 300 to 100dpi 
>> for
>> use in HTML pages, but I'm losing some vertical and horizontal lines in 
>> the
>> images (usually images of x-y plots).
>>
>> Here's what I do:
>> import Image
>> def imgResize(self,filename):
>>         img = Image.open(filename)
>>         dpi = img.info.get('dpi')
>>         if dpi and 295 < int(dpi[0]) < 305:
>>             wd = img.size[0]/3.0 #convert from 300dpi to 100dpi
>>             ht = img.size[1]/3.0
>>             newimg= img.resize((int(wd),int(ht)))
>>             newimg.save(filename)
>>
>> imgResize('myimage.png')
>>
>> Can someone point me to a better way so I don't lose the reference lines 
>> in
>> the images?
>> thanks,
>> --Tim Arnold
>
> Resize accepts a second parameter that is used to determine what kind
> of downsampling filter to use (http://www.pythonware.com/library/pil/
> handbook/image.htm). The default is Image.NEAREST, which just samples
> the nearest pixel and results in the type of data loss you are seeing.
> If you want something better try one of the following and see which
> works best for you: Image.BILINEAR, Image.BICUBIC or Image.ANTIALIAS.
>
> example:
> ...
>    newimg = img.resize((int(wd),int(ht)),Image.ANTIALIAS)
> ...
>
> Matt

Thank you! The ANTIALIAS filter works great. With any of the others, I still 
lost my reference lines.
--Tim




From raims at dot.com  Fri Oct 19 13:56:03 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Fri, 19 Oct 2007 19:56:03 +0200
Subject: What Data is Available With a Pickled Object Over a Socket?
References: <1192746075.952684.152760@z24g2000prh.googlegroups.com>
Message-ID: <1i68y0i.8iyesk18lpcy4N%raims@dot.com>

milan_sanremo <hancock.robert at gmail.com> wrote:
> I've read the library entry for pickle a couple of times, and I'm
> still not
> sure what data is maintained when an item is pickled and sent over a
> socket.

I would not do that if I were you:
<http://jcalderone.livejournal.com/15864.html>

Unless you don't care about security

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Oct 26 19:12:45 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 27 Oct 2007 01:12:45 +0200
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<bgd0i3lmeemshhs0bakbof4ati38i8cijn@4ax.com>
	<1193333796.807911.106350@22g2000hsm.googlegroups.com>
	<1193437090.956730.253770@o3g2000hsb.googlegroups.com>
Message-ID: <5ofajdFmicutU1@mid.individual.net>

Fuzzyman wrote:

> However I did once use a machine where Python had been installed
> into 'c:\Program Files\Python24'. It caused no end of problems...

What, "it"? The machine or the folder? What kinds of problems?

Regards,


Bj?rn

-- 
BOFH excuse #170:

popper unable to process jumbo kernel



From gherzig at fmed.uba.ar  Tue Oct 30 14:08:34 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Tue, 30 Oct 2007 15:08:34 -0300
Subject: dictionary and list
In-Reply-To: <aa405c1f0710300013p1edb353hd0df5512f6705db9@mail.gmail.com>
References: <aa405c1f0710300013p1edb353hd0df5512f6705db9@mail.gmail.com>
Message-ID: <47277322.8060808@fmed.uba.ar>

Beema shafreen wrote:

>hi everbody,
>                   I have a file,
>     a                 b               c                       d         e
>  2722316      2722360    A_16_P03641972    150    -44
>  2722510      2722554    A_16_P21360239    16    -44
>  2722570      2722614    A_16_P03641973    44    -44
>  2722658      2722702    A_16_P41563669    2187    -44
>  2724889      2724948    A_16_P03641974    738    -59
>  2725686      2725745    A_16_P03641975    422    -59
>  2726167      2726219    A_16_P03641976    88    -52
>  2726307      2726366    A_16_P41563677    2167    -59
>  2728533      2728589    A_16_P21360249    5819    -56
>  2734408      2734467    A_16_P21360257    -14    -59
>  2734453      2734509    A_16_P03641977    376    -56
>  2734885      2734929    A_16_P21360259    1987    -44
>
>  
>
This intro looks exactly like the 10 previous post from you. You will 
have to leave some money here, man!
Try posting the result you get, and the result you want for a start. 
Dont make others do what you already did.

Cheers.
Gerardo


From rmnet at mailc.net  Tue Oct 23 12:15:54 2007
From: rmnet at mailc.net (Rene Maurer)
Date: Tue, 23 Oct 2007 18:15:54 +0200
Subject: pure python data compression (zip)
References: <mailman.371.1193145393.13605.python-list@python.org>
Message-ID: <87myu9lscl.fsf@querer.allevents.ch>

Jean-Paul Calderone wrote (23.10.2007):
> On Tue, 23 Oct 2007 14:47:40 +0200, Rene Maurer <rmnet at mailc.net> wrote:
>>Hallo
>>
>>I wonder if there are any pure python implementations available/known
>>for the zip (or any other) data compression... As far as I know
>>python's zlib uses http://www.zlib.net/, which is written in
>>C. Unfortunately this is not solution for me, because my target "only"
>>has a python interpreter....
>>
>>I have "googled" for a while, but I don't have found anything useful.
>
> What is your target, that it can only run programs written in Python,
> not C?  And what Python interpreter are you using?

Target is a GPRS modem (telit 863-PY)
http://www.telit.co.it/product.asp?productId=97

It comes with Python 1.5.2 including the follwoing modules: marshal,
imp, _main_, _builtin_, sys, md5 (all others are not supported, as
well as floats are not supported).

Regards,
Ren?


From jmcmonagle at velseis.com.au  Mon Oct 22 22:11:55 2007
From: jmcmonagle at velseis.com.au (John McMonagle)
Date: Tue, 23 Oct 2007 12:11:55 +1000
Subject: Python - why don't this script work?
In-Reply-To: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
Message-ID: <471D586B.9020004@velseis.com.au>

Ohmster wrote:
> I am trying to use this cool script that some MIT guy wrote and it just 
> does not work, I get a stream of errors when I try to run it. It is 
> supposed to visit a URL and snag all of the pictures on the site. Here is 
> the script:
> http://web.mit.edu/pgbovine/www/image-harvester/image-harvester.py
> 
> Here is my output when I try to run it on my Fedora 6 machine:
> 
> [ohmster at ohmster bench]$ image-harvester.py 
> http://public.fotki.com/DaGennelman/
> /home/ohmster/scripts/image-harvester.py: line 59: from: command not found
> [ohmster at ohmster bench]$
> 
> The script is to be folowed up with another one to weed out the small 
> thumbnails and banner images, here is the base URL:
> http://web.mit.edu/pgbovine/www/image-harvester/
> 
> Line 59 in image-harvester.py reads as follows:
>
> 59:	from sgmllib import SGMLParser
> 60:	import urllib
> 70:	from urlparse import urlparse, urljoin
> 71:	import re
> 72:	import os# Usage: python image-harvester.py <url-to-harvest>
> 
> 
> Can anyone tell me what is wrong with this script and why it will not run? 
> It does not like the command "from", is there such a command in python? 
> Does this mean that python has the "import" command but not the "from" 
> command or do we not know this yet as it hangs right away when it hits the 
> very first word of the script, "from"? Maybe this is not a Linux script or 
> something? I wonder why it needs the x-server anyway, I tried running it 
> from an ssh term window and it had a fit about no x-server so now I am 
> doing this in a gnome term window. This looked so cool too. :(
> 
> Please be patient with me, I do not know python at all, I just want for 
> this script to work and if I see enough working examples of python, I may 
> just take up study on it, but for right now, I do not know the language. 
> Total newbie.
> 
> Thanks.
> 
> 

Your linux shell thinks it is running a shell script (from is not a
valid command in bash).

To execute this script with the python interpreter type (from a shell
prompt):

python image-harvester.py http://some.url.whatever/images_page

Read the comments at the beginning of the script and you will discover
all sorts of important usage information.

Regards,

John


From Glich.Glich at googlemail.com  Tue Oct 30 15:27:48 2007
From: Glich.Glich at googlemail.com (Glich)
Date: Tue, 30 Oct 2007 12:27:48 -0700
Subject: parsing ast nodes help to get callfunc values.
Message-ID: <1193772468.665769.245620@y42g2000hsy.googlegroups.com>

"""
Hi! This is my code so far:

This code analyzes a python file.

How can I separate CallFunc from the est of the ast node?

file.py is as follows:
_________________________________
def fun1():
    print "Hi"
    fun2()
    fun4()

def fun2():
    pass

def fun4():
    pass

fun1()

_________________________________


The output from running this program (not file.py) is:
_________________________________
Func name: fun1
Func line number: 1

Stmt([Printnl([Const('Hi')], None), Discard(CallFunc(Name('fun2'), [],
None, None)), Discard(CallFunc(Name('fun4'), [], None, None))])

isinstance false

Func name: fun2
Func line number: 6

Stmt([Pass()])

isinstance false

Func name: fun4
Func line number: 9

Stmt([Pass()])

isinstance false
Traceback (most recent call last):
  File "/home/glich/compi.py", line 15, in <module>
    print "\nFunc name: " + str(func.name)
AttributeError: Discard instance has no attribute 'name'

_________________________________

Please note the traceback is not important right now. I can deal with
that on my own.

What I want to do is sepperate "CallFunc(Name('fun2'), [], None,
None)" from each "func.code" and furthermore to get "fun2" from
"CallFunc(Name('fun2'), [], None, None)" (my ultimate goal!).

I gues I could split the string but I need to be able to get
"CallFunc(Name(****)" from "func.code" which might have multiple
"CallFunc(Name(****)" such as:

"Stmt([Printnl([Const('Hi')], None), Discard(CallFunc(Name('fun2'),
[], None, None)), Discard(CallFunc(Name('fun4'), [], None, None))])"


which is an "ast" repesentation of the function "fun1" in "file.py".

If some one could show me how to use something called "visitor"? I
would be very grateful. I did not understand the documentation and I
am in need of more SIMPLE example code. Any way, thanks.

Is there somthing along the lines of:

>>> first_callfunc = func.code.callfunc(1)
>>> second_callfunc = func.code.callfunc(2)
>>> third_callfunc = func.code.callfunc(3)
>>> print first_callfunc
CallFunc(Name('fun2'), [], None, None)

"""

import compiler
import compiler.ast

parse_file = compiler.parseFile("/home/glich/file.py")

count = 0

for count, func in enumerate(parse_file.node.nodes):

	print "\nFunc name: " + str(func.name)		# Prints function name.
	print "Func line number: " + str(func.lineno) + "\n"

	print str(func.code) + "\n"

	if isinstance(func, compiler.ast.CallFunc):
		print "isinstance true"         # This should be called sometimes.
	else:
		print "isinstance false"	# This is always called.... but why?!?!?



From jcd at sdf.lonestar.org  Fri Oct  5 11:14:15 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Fri, 5 Oct 2007 11:14:15 -0400
Subject: remove list elements..
In-Reply-To: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
References: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
Message-ID: <20071005151415.GA27592@sdf.lonestar.org>

On Fri, Oct 05, 2007 at 07:27:39AM -0700, Abandoned wrote regarding remove list elements..:
> 
> Hi..
> I have a problem..
> list1=[11, 223, 334, 4223...] 1 million element
> list2=[22,223,4223,2355...] 500.000 element
> 
> I want to difference list1 to list2 but order very importent..
> 
> My result must be:
> list3=[11,334,...]
> 
> I do this use FOR easly but the speed very imported for me. I want to
> the fastest method please help me.
> 
> I'm sorry my bad english.
> 
> King regards..
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list

If you're using a recent python, you can create a set from list2, and preserve order with list1 like so:

set2 = set(list2)
list3 = [ x for x in list1 if x not in set2 ]

That will speed up your access to list2 (for 500,000 scans) at the low cost of reading through the whole thing once.

You say order is very important, but if your order is known to be strictly increasing (as it appears from your sample code), you can speed up further by doing:

set1 = set(list1)
set2 = set(list2)
list3 = sorted(set1 - set2)


Though to tell the truth, I'm not sure this actually would be faster, since you access each element of list1 just once in the list comprehension version.  And I can't be bothered to try it out with timeit.

Cheers,
Cliff



From sjmachin at lexicon.net  Wed Oct  3 16:05:51 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 03 Oct 2007 13:05:51 -0700
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <4703dfff$0$30966$426a74cc@news.free.fr>
References: <4703dfff$0$30966$426a74cc@news.free.fr>
Message-ID: <1191441951.529380.55860@g4g2000hsf.googlegroups.com>

On Oct 4, 4:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
point... at invalid.org> wrote:
> Hi,
> I'am very newbie in Python.
> For the moment I'am trying to convert an unicode character to his uppercase
> unaccented character.
> By example with locale fr_FR:
> a,A,?,? should return A
> o,O,?,? should return O
> ?,? should return ?
> i,I,?,? should return I
>
> Have you some suggestions ?
>
> Thank.

Google in this newsgroup for a thread started by "bussiere" on or
about 2006-03-25. The code snippet provided by Fredrik Lundh should
help you.




From rajarshi.guha at gmail.com  Fri Oct 12 23:35:10 2007
From: rajarshi.guha at gmail.com (Rajarshi)
Date: Sat, 13 Oct 2007 03:35:10 -0000
Subject: ElementTree find with xmlns
In-Reply-To: <1192245542.394991.139770@i13g2000prf.googlegroups.com>
References: <1192245542.394991.139770@i13g2000prf.googlegroups.com>
Message-ID: <1192246510.400104.191170@i13g2000prf.googlegroups.com>

On Oct 12, 11:19 pm, cakebread <cakebr... at gmail.com> wrote:
> I'm having problems parsing a file:
>
> >>> tree = ElementTree.fromstring("""<html xmlns="http://www.w3.org/1999/xhtml" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:doap="http://usefulinc.com/ns/doap#">
>
> <body>Hello world</body>
> </html>""")
>
> >>> print tree.find('body')
>
> None
>
> The above works fine with the first element being a simple <html>, but
> not when I have all the xmlns's.
>
> Thanks,
> Rob


You have to prefix the element name with its namespace. The following
will work

>>> tree.find('{http://www.w3.org/1999/xhtml}body')
<Element {http://www.w3.org/1999/xhtml}body at 779d28>

(Python 2.5, OS X 10.4.10)



From jsrigiri at pcop.com  Wed Oct 24 16:22:07 2007
From: jsrigiri at pcop.com (Srigiri, Joel)
Date: Wed, 24 Oct 2007 16:22:07 -0400
Subject: Solaris 64 bit compilation
Message-ID: <C5DCC3C9AB02D44CB79AF5094BF457FF0280B372@exchange01.pharmacop.com>

Hi Holden,

I am having problems compiling some custom apps.

Can you send me the configure.in where you added the lines.

 

Since then, I have hacked the configure.in and added the option
--enable-solaris-64bit and regenerated the configure script. Now, good
news, it all builds fine. Except I am having a few problems with
extension.

 

Or if you can show me where to add that line I WILL APPRECIATE IT.

 

Thanks,

 

JOEL SRIGIRI

Pharmacopeia, Inc.

*   609-452-3652

*   jsrigiri at pcop.com <mailto:jsrigiri at pcop.com>  

 


________________________________________________________________________
Scanned by IBM Email Security Management Services powered by MessageLabs.
________________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071024/88683bc1/attachment.html>

From paul.hankin at gmail.com  Sat Oct  6 09:46:56 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 06 Oct 2007 13:46:56 -0000
Subject: slice with negative stride
In-Reply-To: <1191672336.230508.50600@o3g2000hsb.googlegroups.com>
References: <1191672336.230508.50600@o3g2000hsb.googlegroups.com>
Message-ID: <1191678416.794945.163000@k79g2000hse.googlegroups.com>

On Oct 6, 1:05 pm, ajcpp... at gmail.com wrote:
> I'm really confused about results of slices with negative strides. For
> example
>
> >>mystr = 'my string'
> ...
> Can someone explain to me how mystr[:3:-1] = 'gnirt'?

You've omitted the first number in the slice: python uses a sensible
default for it - in this case the index of the end of the string
because your stride is negative. If your stride was positive, the
sensible default is the start of the string, so mystr[:3:1] means
mystr[0:3:1] as you would expect.

It's explained in the python documentation, http://docs.python.org/lib/typesseq.html
(especially note 5 on that page).

--
Paul Hankin



From paul at boddie.org.uk  Tue Oct 23 09:50:21 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Tue, 23 Oct 2007 06:50:21 -0700
Subject: How can i protect text format ?
In-Reply-To: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
References: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
Message-ID: <1193147421.150013.34070@i13g2000prf.googlegroups.com>

On 23 Okt, 15:30, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to do a forum with python but i have a problem..
>
> I have a <textarea> and i write:
> line 1 hi
> line 2 how r u
>
> And then i save to this database ( colomn data type is text)
> And than it looks "line 1 hi line 2 how r u"..
> How can i protect \n characters ?

Some questions:

1. How do you extract the data from the textarea? Which Web framework/
library are you using?

2. Are you sure that the "\n" characters are missing when you extract
the data? (Printing/writing the data to a log, perhaps using the repr
function, can be very useful.)

3. How do you save the data to the database?

4. How do you view the contents in the database? If you aren't yet
viewing the contents in your application, but instead in your database
client, does your database client show "\n" characters? If your
application is showing the contents, what does the data look like
before you try and display it? (Again, writing to a log can be
useful.)

Paul



From loic.mahe at nospam.fr  Tue Oct 23 05:48:08 2007
From: loic.mahe at nospam.fr (Loic Mahe)
Date: Tue, 23 Oct 2007 11:48:08 +0200
Subject: How to implement function like this?
In-Reply-To: <5o5sqtFld8c9U3@mid.uni-berlin.de>
References: <ffkba5$1u6$1@wake.carmen.se> <5o5sqtFld8c9U3@mid.uni-berlin.de>
Message-ID: <471dc352$0$5091$ba4acef3@news.orange.fr>

even shorter:

def funcA(tarray):
     s = min(len(tarray), 3)
     return [2, 3, 4][0:s] + [e for e in funcB(3-s)[0:3-s]]


From tomamil at gmail.com  Mon Oct  8 05:39:31 2007
From: tomamil at gmail.com (tomamil)
Date: Mon, 08 Oct 2007 09:39:31 -0000
Subject: Really basic problem
Message-ID: <1191836371.296466.137780@22g2000hsm.googlegroups.com>

i know this example is stupid and useless, but that's not the answer
to my question.
here it goes:

status = 0.0
for i in range(10):
   status = status + 0.1

   if status == 0.1:
       print status
   elif status == 0.2:
       print status
   elif status == 0.3:
       print status
   elif status == 0.4:
       print status
   elif status == 0.5:
       print status
   elif status == 0.6:
       print status
   elif status == 0.7:
       print status
   elif status == 0.8:
       print status
   elif status == 0.9:
       print status
   elif status == 1.0:
       print status

the expected output:
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0

but it gives me instead:
0.1
0.2
0.4
0.5
0.6
0.7

why?

thanks,

m.



From ndbecker2 at gmail.com  Wed Oct  3 10:51:12 2007
From: ndbecker2 at gmail.com (Neal Becker)
Date: Wed, 03 Oct 2007 10:51:12 -0400
Subject: [Tutor] data from excel spreadsheet to csv and manipulate
References: <004d01c8042c$db761440$0b0aa8c0@rbsassociates.local>
	<BAY111-W40C493F93FA9AE2A7B9C95F3AF0@phx.gbl>
	<2dc0c81b0710030703j11c6e1bds7aec73003be1420@mail.gmail.com>
Message-ID: <fe0a9n$g8r$1@sea.gmane.org>

look at xlrd module and also csv module.




From rcdailey at gmail.com  Wed Oct 10 23:19:49 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 22:19:49 -0500
Subject: Problems with struct.pack()
In-Reply-To: <1192063855.3385.30.camel@localhost.localdomain>
References: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>
	<1192063855.3385.30.camel@localhost.localdomain>
Message-ID: <496954360710102019t25fe9f10p5cf9295212b0c433@mail.gmail.com>

Hi,

Thanks for responding. I apologize about my lack of details, I was in a
hurry when I wrote the initial question. I'll provide more details.

Basically, I'm attempting to write out unicode strings (16 bits per
character) to a file. Before each string, I write out 4 bytes containing the
number of characters (NOT BYTES) the string contains. I suppose the
confusion comes in because I'm writing out both text information AND binary
data at the same time. I suppose the consistent thing to do would be to
write out the strings as binary instead of as text? I'm originally a C++
programmer and I'm still learning Python, so figuring out this problem is a
little difficult for me.

In my initial inquiry, I was writing out 5000 as an example, however this
number would realistically be the number of characters in the string: len(
u"Hello World" ). Once I write out these 4 bytes, I then write out the
string "Hello World" immediately after the 4 bytes. You may be wondering why
the crazy file format. The reason is because this python script is writing
out data that will later be read in by a C++ application.

The following works fine for ASCII strings:

mystring = "Hello World"
file = open( "somefile.txt", "wb" )
file.write( struct.pack ( "I", len(mystring) ) )
file.write( mystring )

Again I do apologize for the lack of detail. If I've still been unclear
please don't hesitate to ask for more details.

On 10/10/07, Carsten Haese <carsten at uniqsys.com> wrote:
>
> On Wed, 2007-10-10 at 19:00 -0500, Robert Dailey wrote:
> > Hi,
> >
> > I have opened a unicode file for writing:
> >
> > import codecs
> > file = codecs.open( "somefile.dat", "wb", "utf-16" )
> >
> > and I attempt to do this:
> >
> > file.write( struct.pack ( "I", 5000 ) )
> >
> > However, this won't work because the encoding of the string returned
> > by "pack" isn't unicode. I'm a bit confused right now as to how I can
> > get this to work. I can't allow the unicode-ness of the file interfere
> > with the actual order of the bytes that pack() is returning (In other
> > words, don't pack NULL characters in there)
>
> Please start at the beginning. What are you actually trying to
> accomplish and why do you think you need to write arbitrary binary data
> into a file that is supposed to be a UTF-16 encoded Unicode text file?
>
> --
> Carsten Haese
> http://informixdb.sourceforge.net
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/74f98c76/attachment.html>

From aahz at pythoncraft.com  Sat Oct 27 09:16:02 2007
From: aahz at pythoncraft.com (Aahz)
Date: 27 Oct 2007 06:16:02 -0700
Subject: How to create a PUG mailing list?
References: <ffroc1$98t$1@foggy.unx.sas.com>
Message-ID: <ffvdmi$19b$1@panix3.panix.com>

In article <ffroc1$98t$1 at foggy.unx.sas.com>,
Kevin D. Smith  <Kevin.Smith at sixquickrun.com> wrote:
>
>I'm trying to get a Python User Group started in Norman, OK and I want 
>to get one of those fancy mailing lists on mail.python.org.  There is a 
>link there to create a new list if you have the proper authority.  How 
>does someone get the proper authority?

Expressing interest.  ;-)

Seriously, just send email to postmaster at python.org -- they're a bit
strapped for time, so it may take a few days.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"Typing is cheap.  Thinking is expensive."  --Roy Smith


From python at hope.cz  Wed Oct  3 01:32:58 2007
From: python at hope.cz (Johny)
Date: Tue, 02 Oct 2007 22:32:58 -0700
Subject: Python and SSL
In-Reply-To: <470174FC.5060709@v.loewis.de>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
Message-ID: <1191389578.176470.161360@50g2000hsm.googlegroups.com>

Thank you all for your replies.
I am still a newbie with SSL issues but I found out that:
a  certificate that is signed by OpenSSL's own CA( certification
authority), that is not recognized in the program's list of root CAs,
causes an exception to be raised.
(That is a different behaviour from the built-in SSL.)
So, my question again,
how can I add a certification to the list of root CAs?
Thanks for help
L.





From cokofreedom at gmail.com  Tue Oct 23 08:09:13 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Tue, 23 Oct 2007 12:09:13 -0000
Subject: Iteration for Factorials
In-Reply-To: <1193140736.924933.217960@v23g2000prn.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193083810.302605.128630@y27g2000pre.googlegroups.com>
	<877ileq40i.fsf@rudin.co.uk>
	<1193089188.812952.241920@v29g2000prd.googlegroups.com>
	<1193140736.924933.217960@v23g2000prn.googlegroups.com>
Message-ID: <1193141353.274266.39000@e9g2000prf.googlegroups.com>

On Oct 23, 1:58 pm, tokl... at gmail.com wrote:
> On 22 oct, 23:39, "mensana... at aol.com" <mensana... at aol.com> wrote:
>
> > Nope, still doesn't work:
>
> > def fact(x):
> >         return reduce(operator.mul,xrange(1,x+1),1)
>
> > fact() should raise an exception if x is negative.
>
> So, where is the problem? if not allowing negative numbers is so
> important for you, add a if statement and raise a ValueError exception.

indeed, especially considering that fact(x) is essentially just a
lambda statement as Marco Mariani said.



From root at dev.nul.invalid  Tue Oct 23 14:53:33 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 20:53:33 +0200 (CEST)
Subject: Python - why don't this script work?
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
	<1193108392.089611.91170@v29g2000prd.googlegroups.com>
	<Xns99D288BAE44EMyBigKitty@194.177.96.26>
	<1193127053.740024.144730@q5g2000prf.googlegroups.com>
Message-ID: <Xns99D2977C0F7A9MyBigKitty@194.177.96.26>

cokofreedom at gmail.com wrote in news:1193127053.740024.144730
@q5g2000prf.googlegroups.com:

> 
> Do note that the reason you may not see images is that the website
> has, '''correctly''', identified your program as an automated bot and
> blocked it access to things...

Probably so, I did not get anything, even with all of that flurry of 
activity, the results were 0 images. :(

-- 
~Ohmster | ohmster /a/t/ ohmster dot com
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From steven at REMOVE.THIS.cybersource.com.au  Sun Oct  7 23:28:24 2007
From: steven at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 03:28:24 -0000
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
	<13gi4vrfqhrs48d@corp.supernews.com>
	<1i5m4bz.18obx4r5bg0gaN%aleax@mac.com>
Message-ID: <pan.2007.10.08.03.28.23@REMOVE.THIS.cybersource.com.au>

On Sun, 07 Oct 2007 12:55:29 -0700, Alex Martelli wrote:


>> What should I do when my objects need to perform some special
>> processing when they are freed, if I shouldn't use __del__?
> 
> The solid, reliable way is:
> 
> from __future__ import with_statement
> 
> and use module contextlib from the Python standard library (or handcode
> an __exit__ method, but that's rarely needed), generating these special
> objects that require special processing only in 'with' statements.  This
> "resource acquisition is initialization" (RAII) pattern is the RIGHT way
> to ensure timely finalization (particularly but not exclusively in
> garbage-collected languages, and particularly but not exclusively to
> ease portability to different garbage collection strategies -- e.g.,
> among CPython and future versions of IronPython and/or Jython that will
> support the with statement).

Hmmm... I'm not sure I understand how a with statement is meant to 
replace class.__del__ in practice. It seems to me that the two things 
have different uses. with is useful when you create an object, do 
something with it, dispose of it in an orderly fashion, and then 
continue. How does that help when you create an unknown number of long-
lasting objects where you can't predict how and when they will be 
disposed of?

Here's a minimal example. I have a module that returns parrot objects:

# Parrot module
class Parrot(object):
    def __del__(self):
        print "I'm now pushing up the daisies"


# Callers code:
import Parrot
p = Parrot.Parrot()
alist = [Parrot.Parrot() for i in range(1000)]
# do something with p and alist
print p, alist
# instances are deleted in arbitrary order
del p
del alist[3]
del alist[853]
del alist[701]
del alist



It seems to me that you are saying to re-write the above as something 
like this:


# Parrot module
class Parrot(object):
    pass

class killed(object): # context manager
    def __exit__(self, *exc_info):
        print "I'm now pushing up the daisies"


# Callers code:
import Parrot
with killed(Parrot.Parrot()) as p:
    # ... er, what do I do with alist???
    # do arbitrary stuff with p and alist
    print p, alist


Now, I don't think the above is feasible. What am I missing?



> An alternative that will work in pre-2.5 Python (and, I believe but I'm
> not sure, in Jython and IronPython _today_) is to rely on the weakref
> module of the standard Python library.
...


I'm going to need some time to play around with that, but it seems 
reasonably straightforward. But the obvious thing I can see is that 
there's an awful lot of boilerplate code that needs to be written for 
each and every class that needs a "weak finalizer".

That is to say, Python "guarantees" that __del__ will always be called 
(unless it isn't... "guarantee void on planet Earth") for your objects, 
so the developer doesn't need to do anything except write the finalizer. 
To do the right thing with weakrefs means that not only does the 
developer have to write the finalizer, but he has to write the code to 
ensure the finalizer is called. I'm not sure that's a step forward.



-- 
Steven.


From mensanator at aol.com  Tue Oct  2 19:14:14 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 02 Oct 2007 16:14:14 -0700
Subject: Using fractions instead of floats
In-Reply-To: <1191365036.561668.242010@57g2000hsv.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
	<1191301175.225114.283340@50g2000hsm.googlegroups.com>
	<mailman.1380.1191305602.2658.python-list@python.org>
	<1191360444.514028.186770@d55g2000hsg.googlegroups.com>
	<1191365036.561668.242010@57g2000hsv.googlegroups.com>
Message-ID: <1191366854.061830.57080@o80g2000hse.googlegroups.com>

On Oct 2, 5:43 pm, richy... at gmail.com wrote:
> On Oct 2, 5:27 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>
> > But it is still wrong to say "0.6 is definitely not the same as 3/5".
>
> Out of context, I'd certainly agree.  But from the context, I assumed
> it was clear that the 0.6 was a Python float.  I probably should have
> made this clearer.  My statement should probably have been something
> like: a literal 0.6 in Python code does not have the same mathematical
> value as the rational (or real) number 3/5.

Ok, so maybe I should have said: the literal 0.6 isn't what gets added
to mpq(1,3) to form the sum. What actually is added is the 0.6 coerced
to an mpq which is then added to mpq(1,3). So what 0.6 is as a float
is
relevent only to what it gets coerced to.

>
> Richard




From bj_666 at gmx.net  Tue Oct 23 17:20:48 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 21:20:48 GMT
Subject: How to find out which functions exist?
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
Message-ID: <5o76tgFld8c9U10@mid.uni-berlin.de>

On Tue, 23 Oct 2007 21:10:04 +0000, mrstephengross wrote:

> Let's say I have a python file with a base class, and a few derived
> classes:
> 
> class Base:
>   pass
> 
> class Derived1(Base):
>   pass
> 
> class Derived2(Base):
>   pass
> 
> Is there a way I can find out the classes that have been derived from
> Base?

Take a look at the `issubclass()` function.

Ciao,
	Marc 'BlackJack' Rintsch


From see.signature at no.spam  Fri Oct 12 08:10:54 2007
From: see.signature at no.spam (Eric Brunel)
Date: Fri, 12 Oct 2007 14:10:54 +0200
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
Message-ID: <op.tz22sgxbwepdt4@ericb.pragmadev>

On Fri, 12 Oct 2007 10:13:29 +0200, psaffrey at googlemail.com  
<psaffrey at googlemail.com> wrote:
> I've been programming in Python for 5 or more years now and whenever I
> want a quick-n-dirty GUI, I use Tkinter. This is partly because it's
> the first toolkit I learnt, but also because it's part of the standard
> Python distribution and therefore easy to get Python apps to work
> cross platform - it usually requires almost no porting effort.
>
> However, when I need a little bit more grunt, I tend to turn to Tix,
> which I thought was also fairly standard. However, this week, I wrote
> a Tix application under Linux which I'd really like to work on Mac OS
> and it's proving fairly painful to get it going. There is no Tix in
> the standard fink or apt repositories and when I download a tar-ball,
> it wouldn't build because it had a lot of unmet dependencies. I then
> read a post which said that only Tkinter/Python people really use Tix
> anymore and people in tcl/tk moved onto better toolkits long ago.
>
> My question is if Tix is old hat, what is the GUI toolkit I *should*
> be using for quick-n-dirty cross platform GUI development?

Since you're already used to Tkinter, I'd say: just wait... tcl/tk 8.5 is  
on the way and it will bring a lot of new and long-awaited widgets, along  
with native look on most platforms. See here:
http://wiki.tcl.tk/14796
and here for the look:
http://tktable.sf.net/tile/

Note that there are already Tkinter wrappers for these widgets, but they  
may not be the ones that'll end up in the official distribution. If you  
want to play with them, you can find them here:
https://sourceforge.net/project/showfiles.php?group_id=165637
(download tkinter-wrappers)

If you want to use these, you'll of course also need the latest beta of  
tcl/tk 8.5, downloadable from here:
http://www.tcl.tk/software/tcltk/8.5.html

> I hope this isn't a stupid question. I'm wearing flame retardant
> underwear.

You won't need these much around here... ;-)

HTH
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From horpner at yahoo.com  Mon Oct  1 13:26:08 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Mon, 01 Oct 2007 17:26:08 GMT
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
Message-ID: <slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>

On 2007-10-01, Arnaud Delobelle <arnodel at googlemail.com> wrote:
> Finally, arithmetic would become very confusing if there were
> three distinct numeric types; it already causes enough
> confusion with two!

Scheme says: It's not that bad.

-- 
Neil Cerutti
I am free of all prejudices. I hate everyone equally. --W. C. Fields


From legendliveshere at yahoo.com  Wed Oct 24 08:14:02 2007
From: legendliveshere at yahoo.com (dracula)
Date: Wed, 24 Oct 2007 05:14:02 -0700
Subject: SHARING SOME INTERESTING LINKS I FOUND ON NET
Message-ID: <1193228042.068693.55880@i38g2000prf.googlegroups.com>

SHARING SOME INTERESTING LINKS I FOUND ON NET



PART-TIME JOB FOR GOOGLE,NO INVESTMENT,FREE MONEY

u all are familier about google but do u know that google gives us
opportunity to build our free website any one can earn free money  up
to $4000 per month :

1) NO PRE INVESTMENT

2) U'll get ur website totally for free

3) U can build ur website without knowing any web designing language.

4) mind it that it's google's offer so no cheating involved.

5) u wont have anything to loose , but only to gain.

for details check this website  : www.itsurmoney.blogspot.com



CLASSIC HORROR


Real shock      http://deathlyhollow.blogspot.com/2007/10/real-shock.html



Flaming saint      http://deathlyhollow.blogspot.com/2007/10/flaming-saint.html


Aborted baby   http://deathlyhollow.blogspot.com/2007/10/abortion.html



 Horrific girl

http://deathlyhollow.blogspot.com/2007/10/horror1.html


Trapped in water
http://deathlyhollow.blogspot.com/2007/10/2.html






LOVE GIFT


Love rain      http://deathlyhollow.blogspot.com/2007/10/love-rain.html


Love poem pic2     http://deathlyhollow.blogspot.com/2007/10/love-poem-1.html



 Love poem pic1      http://deathlyhollow.blogspot.com/2007/10/love-poem2.html



FREE ONLINE GAMES




Games page 1 	http://deathlyhollow.blogspot.com/2007/10/gamefront.html

Games page 2	http://deathlyhollow.blogspot.com/2007/09/games.html

Games page 3	http://deathlyhollow.blogspot.com/2007/10/games2.html

Games page 4	http://deathlyhollow.blogspot.com/2007/10/game4.html


SHARING SOME INTERESTING LINKS I FOUND ON NET

AMAZINGS STUFFS





Praying child
(http://deathlyhollow.blogspot.com/2007/10/praying-child.html)


Crying beauty
"http://deathlyhollow.blogspot.com/2007/10/crying-beauty.html"

Stylish bikni
"http://deathlyhollow.blogspot.com/2007/10/stylish-bras.html"


Dont omplain	http://deathlyhollow.blogspot.com/2007/10/blog-post.html>


Body tatoo
http://deathlyhollow.blogspot.com/2007/10/body-tatoos.htmlBody tatoo


Amazing twins
http://deathlyhollow.blogspot.com/2007/10/amazing-twins.html=""
target="_new">Amazing twins


Heart touching incident	http://deathlyhollow.blogspot.com/2007/10/heart-touching-incident.html



	FUNNY STUFF

Amazing bridge
http://deathlyhollow.blogspot.com/2007/10/amazing-bridge.html


Smoking child	"http://deathlyhollow.blogspot.com/2007/10/smoking-
child.html


Bush's secret photo	http://deathlyhollow.blogspot.com/2007/10/bushs-secret-photo.html


Nehru's joke	http://deathlyhollow.blogspot.com/2007/10/nehrus-joke.html


Difficult to explain	http://deathlyhollow.blogspot.com/2007/10/awsome.html

Funny dog	http://deathlyhollow.blogspot.com/2007/10/funny-dog.html

ANTI HACKING

HOW NOT TO GET HACKED	http://realm-of-tricks.blogspot.com/2007/09/how-not-to-get-hacked.html

MAKING PASSWORDS VERY VERY TOUGH TO CRACK
http://realm-of-tricks.blogspot.com/2007/10/making-very-strong-passwords.html


PREVENTING OTHERS TO COPY PIC OR FILE FROM UR WEBPAGE
http://realm-of-tricks.blogspot.com/2007/10/preventing-others-to-copy-ur-pics-or.html



TROZEN CHECK
http://realm-of-tricks.blogspot.com/2007/10/trozen-check.html





VIRUS CODES


AUTOPLAY VIRUS SOLUTION		http://realm-of-tricks.blogspot.com/2007/09/autoplay-virus-solution_11.html


DUMMY VIRUS 1	http://realm-of-tricks.blogspot.com/2007/09/virus-code.html


VIRUS TO MAKE THE PC RESTART OR SHUTDOWN AGAIN AND AGAIN
http://realm-of-tricks.blogspot.com/2007/09/make-computer-keep-restarting-1.html


PC TWEAKS


SPEEDING XP BY 60 TIMES		http://realm-of-tricks.blogspot.com/2007/09/speeding-xp-by-60-times.html


MAKE A FOLDER ININCIBLE		http://realm-of-tricks.blogspot.com/2007/09/invincible-folder.html



CLONING HARDDISK WITHOUT ANY SOFTWARE	http://realm-of-tricks.blogspot.com/2007/09/cloning-harddisk.html



CHANGE DRIVE LETTERS	http://realm-of-tricks.blogspot.com/2007/09/change-drive-letters.html




LOCK XP WORKSTATION	http://realm-of-tricks.blogspot.com/2007/09/lock-workstation.html


DISPLAY MESSAGE ON WINDOWS STARTUP
http://realm-of-tricks.blogspot.com/2007/09/display-message-on-startup.html


NOTEPAD "WORLD TRADE CENTER TRICK
http://realm-of-tricks.blogspot.com/2007/09/notepad-world-trade-centre-trick.html





FORBIDDEN FOLDER NAMES		http://realm-of-tricks.blogspot.com/2007/09/words-that-cant-be-used-for-naming.html


CHANGING DRIVES ICON	http://realm-of-tricks.blogspot.com/2007/09/changing-drives-icons.html



MOBILE TRICKS AND HACKS



NOKIA NEW MOBILE CODES<		http://realm-of-tricks.blogspot.com/2007/09/nokia-new-mobile-cheats.html


ERICSON MOBILE SECRETS
http://realm-of-tricks.blogspot.com/2007/09/ericsson-mobile-secrets.html





VIRUS FIXING



Newfolder.exe
http://realm-of-tricks.blogspot.com/2007/10/newfolderexe-virus-solution.html



Temp2.exe
http://realm-of-tricks.blogspot.com/2007/10/temp2exe-virus-solution.html


Restrictions creating virus solution
http://realm-of-tricks.blogspot.com/2007/10/restrictions-creating-virus-solution.html

Taskmanager and regedit virus solutio
http://realm-of-tricks.blogspot.com/2007/10/taskmanager-or-registry-editor-virus_21.html


MUHAHAHA virus solution	http://realm-of-tricks.blogspot.com/2007/10/muhaha-virus-solution.html


FREE DOWNLOADS



FREE KELOGGERS<		http://realm-of-tricks.blogspot.com/2007/10/keylogger-download.html



MS DOCUMENTS PASSWORD CRACKER	http://realm-of-tricks.blogspot.com/2007/10/ms-office-files-password-cracker.html



HACKING SOFTWARES	http://realm-of-tricks.blogspot.com/2007/10/hacking-softwares-1.html


BYPASSING WEBFILTERS	http://realm-of-tricks.blogspot.com/2007/10/bypassing-webfilters.html


HACKING UR SCHOOL'S OR COLLEGE'S PC
http://realm-of-tricks.blogspot.com/2007/10/hacking-ur-schools-pc.html


WHAT ARE TROZENS	http://realm-of-tricks.blogspot.com/2007/10/trozens.html


IP ADDRESS DETAILS	http://realm-of-tricks.blogspot.com/2007/10/ip-address-details.html


KEYLOGGERS	http://realm-of-tricks.blogspot.com/2007/10/keyloggers.html



PORT KNOCKING	http://realm-of-tricks.blogspot.com/2007/10/port-knocking-2.html


NETBIOS
http://realm-of-tricks.blogspot.com/2007/10/netbios.html






SHORTCUT FOR RESTARTING PC	http://realm-of-tricks.blogspot.com/2007/09/creating-shortcut-for-restating.html


POPPING UR NAME BANNER ON WINDOWS STARTING
http://realm-of-tricks.blogspot.com/2007/09/pop-banner-on-windows-boot.html


ADD UR PHOTO TO MY COMPUTER PROPERTIES

http://realm-of-tricks.blogspot.com/2007/09/add-ur-photo-to-my-computer-properties.html

LOCK FOLDER WITHOUT ANY SOFTWARE
http://realm-of-tricks.blogspot.com/2007/09/lock-any-folder-without-any-software.html

REMOVE SHUTDOWN OPTION	http://realm-of-tricks.blogspot.com/2007/09/remove-shutdown-option-from-ur-pc.html


RUN COMMANDS (VERY HELPFUL FOR THOSE WHO HATE MOUSE)
http://realm-of-tricks.blogspot.com/2007/09/run-commands_11.html


HACKS AND CRACKS

ENABLING RIGHT CLICK ON DAT SITES WHO DISABLED IT
http://realm-of-tricks.blogspot.com/2007/09/enabling-right-clicks-on-site-dat.html


FORMATTING HDDD WHILE RUNNING WINDOWS
http://realm-of-tricks.blogspot.com/2007/09/formatting-hdd-while-windows-is-on.html

FORMAT HDD USING NOTEPAD	http://realm-of-tricks.blogspot.com/2007/09/format-hdd-using-notepad.html


FIND WHO IS INVISIBLE IN YAHOO MESSENGER
http://realm-of-tricks.blogspot.com/2007/09/find-who-is-invisible-in-yahoo-1.html


CREATING BAD SECTORS IN HDD	http://realm-of-tricks.blogspot.com/2007/09/creating-bad-sector-on-hdd.html


ERASE HDD AND CMOS
http://realm-of-tricks.blogspot.com/2007/09/erase-hdd-and-cmos.html


FIND IP ADDRESS OF SENDER IN YAHOO
http://realm-of-tricks.blogspot.com/2007/09/find-ip-address-of-sender-in-yahoo.html

KNOWING WHO HACKED U	http://realm-of-tricks.blogspot.com/2007/09/knowing-who-hacked-you.html

HACKING ADMIN FROM USER ACCOUNT
http://realm-of-tricks.blogspot.com/2007/10/hacking-admin-from-user-account.html

HACKING MSN	http://realm-of-tricks.blogspot.com/2007/10/hacking-msn.html



From carsten at uniqsys.com  Mon Oct  8 14:03:59 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 08 Oct 2007 14:03:59 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191865263.572366.270820@y42g2000hsy.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
Message-ID: <1191866639.3402.29.camel@dot.uniqsys.com>

On Mon, 2007-10-08 at 10:41 -0700, mensanator at aol.com wrote:
> For example, Windows has seperate listings for
> 
> Central America
> Central Time (US & Canada)
> Guadalahara, Mexico City, Monterry - New
> Guadalahara, Mexico City, Monterry - Old
> Saskatchewan
> 
> but they are all GMT-6

But they could have different rules for Daylight Saving Time.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From steveo at syslang.net  Mon Oct  1 15:52:51 2007
From: steveo at syslang.net (Steven W. Orr)
Date: Mon, 1 Oct 2007 15:52:51 -0400 (EDT)
Subject: Question about quoting style.
Message-ID: <alpine.LFD.0.9999.0710011231080.22955@saturn.syslang.net>

Python has a number of "quoting" 'options' to help """with
times when""" one way may be more convenient than another.

In the world of shell scripting, I use a technique that I call minimal 
quoting. It works like this:

foo=bar			# No quotes needed
echo $foo		# Also none needed
baz='Hello there'	# Don't use double quotes. No iterpolation.
qaz="$baz $foo and grill" # Interpolation needs double quotes.

Is there some sort of best practices approach for when different types of 
quoting should be employed?

TIA

-- 
Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net


From chris.monsanto at gmail.com  Tue Oct 30 20:16:34 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Wed, 31 Oct 2007 00:16:34 -0000
Subject: basic threading question
In-Reply-To: <13ifh9hf5eor49f@corp.supernews.com>
References: <13ifh9hf5eor49f@corp.supernews.com>
Message-ID: <1193789794.782609.197860@z9g2000hsf.googlegroups.com>

On Oct 30, 7:58 pm, "bambam" <da... at asdf.asdf> wrote:
> Are function variables thread safe?
>
> def f(a):
>     # whatever
>     return float(a)
>
> Is that OK?
>
> def f(a):
>     #whatever
>     b=a:
>     #whatever:
>     return float(b)
>
> Is that OK?
>
> Steve.

Huh?



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct 23 03:37:40 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 23 Oct 2007 09:37:40 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
Message-ID: <471da4b7$0$22586$426a34cc@news.free.fr>

Steven Bethard a ?crit :
> Bruno Desthuilliers wrote:
>> Steven Bethard a ?crit :
>> (snip)
>>> In Python, you can use property() to make method calls look like 
>>> attribute access.  This could be necessary if you have an existing 
>>> API that used public attributes, but changes to your code require 
>>> those attributes to do additional calculations now.
>>>
>>> But if you're creating a class for the first time, it should *never* 
>>> use property().  There's no need to retrofit anything.
>>
>> May I kindly disagree here ?-)
> 
> Of course. ;-)
> 
>> Computed attributes are IMHO not only a life-saver when it comes to 
>> refactoring. There are cases where you *really* have - by 'design' I'd 
>> say - the semantic of a property, but know from the start you'll need 
>> computation (for whatever reason). Then what would be the rationale 
>> for using explicit getters/setters ?
> 
> I'd be interested to hear what these use cases are.

I once wrote a small ORM-like wrapper for LDAP access, and, for reasons 
that might be obvious for anyone having worked with LDAP, I choosed to 
keep the record values in the format used by the lower level LDAP lib 
and let user code access them thru computed attributes (actually 
custom-made descriptors). Talking about ORMs, most of them surely use a 
similar scheme.

I could also list the CS101 examples, like Shape.area, 
Rect.bottom_right, Person.age, etc... And yes, some of these attributes 
are obviously read-only. That doesn't prevent them from being 
semantically *properties*, not *behaviour*.

> Generally, people expect that attributes are used for simple state, and 
> methods are used when some sort of computation is required.
 >
> If you use 
> attributes when some computation is required, you violate your users' 
> expectations.

Depends on which kind of people and on their background. I obviously 
don't advocate the use of computed attributes for heavy, non-cachable 
computations (please don't call me stupid !-), but not suffering from a 
too long exposures to some low-level mainstream languages, I never 
assume that attribute syntax implies direct attribute access.

> Of course, you can always document that your attributes require 
> computation. But you're definitely adding some cognitive load by 
> violating the normal expected behavior of attributes and methods.

"normal expected behaviour" ? "normal" according to which norm, and 
"expected" by who ? In a language with a very strong builtin support for 
computed attributes, the only thing to expect is that you don't have to 
call an attribute to get to the value.




From gagsl-py2 at yahoo.com.ar  Sat Oct 20 12:42:34 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 20 Oct 2007 13:42:34 -0300
Subject: Display all properties with reflection
References: <73182.71533.qm@web90504.mail.mud.yahoo.com>
Message-ID: <op.t0h8o8dhx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sat, 20 Oct 2007 06:03:55 -0300, sccs cscs <zorg724 at yahoo.fr> escribi?:

> Hello,
> I like create a methode that display all the properties of an instance  
> of classe with their value.
> I try the following code: see     def __str__ (self) methode.
> But it displays only the instance attributes values not the properties  
> and their value.
> In pseudo-code:
> For Each Properties :
>    print  property_name,  property_value
>
> It is possible ? Where is the collection of properties into the Python  
> Object Metamodele?

Is this what you want, using dir()?

py> class A(object):
...   x = 1
...   @property
...   def y(self): return 2
...
py> a=A()
py> a.z=3
py>
py> dir(a)
['__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__',  
'__hash__', '__init__', '__module__', '__new__', '__reduce__',  
'__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__', 'x',  
'y', 'z']
py> for name in dir(a):
...   if name[:1]=='_': continue
...   print name, getattr(a,name)
...
x 1
y 2
z 3
py>

You may want to filter out some values, methods by example. If you usually  
don't store functions as attributes, checking if the attribute itself has  
a __call__ attribute may be enough:

py> class B(A):
...   def method1(self): pass
...   @classmethod
...   def method2(cls): pass
...   @staticmethod
...   def method3(): pass
...   def foo(self):
...     self.some_var = 1
...     def some_function(a):
...       return "hello!"
...     self.some_function = some_function
...
py> b=B()
py> b.foo()
py> dir(b)
['__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__',  
'__hash__', '__init__', '__module__', '__new__', '__reduce__',  
'__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__',  
'foo', 'method1', 'method2', 'method3', 'some_function', 'some_var', 'x',  
'y']
py> for name in dir(b):
...   if name[:1]=='_': continue
...   value = getattr(b,name)
...   if hasattr(value, '__call__'): continue
...   print name,'=',value
...
some_var = 1
x = 1
y = 2
py>

-- 
Gabriel Genellina



From martin at v.loewis.de  Mon Oct 22 15:52:22 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 22 Oct 2007 21:52:22 +0200
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710220747g21dc3078q8cf919431044713a@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>	
	<471B8711.1020509@v.loewis.de>	
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>	
	<471BB1FA.1020704@v.loewis.de>	
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>	
	<471BBD55.9030601@v.loewis.de>	
	<496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>	
	<66d0a6e10710212233q405b7798o46c1a9b4f8014327@mail.gmail.com>
	<496954360710220747g21dc3078q8cf919431044713a@mail.gmail.com>
Message-ID: <471CFF76.2000204@v.loewis.de>

> This preference, in
> turn, is what motivated my original question. The CPython API
> interface itself seems modularized, NOT object oriented (only from
> what I saw). 

I suggest you look again, then. Things like PyObject_String,
PyObject_GetAttrString, or PySequence_GetItem all express the
object-orientation in the API. The hide the actual implementation
of how string conversion is done, how attribute names are converted
to attribute values, and how an item in an enumerable sequence is
accessed. They exhibit polymorphism, late binding, and encapsulation,
which are among the core properties of object-orientation. The
C API (although not these three functions) also supports inheritance,
which is the core property missing in the previous list.

Regards,
Martin




From deets at nospam.web.de  Sat Oct 20 13:01:56 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 20 Oct 2007 19:01:56 +0200
Subject: vote for Python - PLEASE
In-Reply-To: <5nu52fFjfiluU2@mid.individual.net>
References: <mailman.193.1192751640.13605.python-list@python.org>
	<13hhk968d8mf7c9@corp.supernews.com>
	<13hj10bro78ltad@corp.supernews.com>
	<5nu52fFjfiluU2@mid.individual.net>
Message-ID: <5nuqkeFjnho9U1@mid.uni-berlin.de>

Bjoern Schliessmann schrieb:
> Steven D'Aprano wrote:
>> It's an Internet poll. By definition, the results are meaningless.
> 
> Regrettably, there are many people that don't share your definition.
> 
> Also, why would there be telephone votings in TV if they were
> meaningless to the default watcher? :) 

Because it costs 50cent to call, which makes a useless and most of the 
time heavily biased poll a nice source of income. Or why do you think 
even the larger TV-stations show call-in-TV-shows at night?

Diez


From "xaos\" at (none)  Fri Oct 12 15:07:37 2007
From: "xaos\" at (none) (none)
Date: Fri, 12 Oct 2007 15:07:37 -0400
Subject: problem with wxPanel derivation class ~ thanks
In-Reply-To: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
References: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
Message-ID: <fpudnVlTcpFmWJLanZ2dnUVZ_uygnZ2d@comcast.com>

none wrote:
> wxGlade created a simple Frame with a panel a sizer and 3 wxControls ,
> saticText, TextCtrl, and a Button.
> 
> The resulting code works fine.
> 
> Now the problem.
> I wish to make a separate class derrived from wxPanel that has the sized
> and controls as above.  It jusst won't work
> 
> 
> <code id="gladeGen" class="works_ok">
> #!/usr/bin/env python
> # -*- coding: ISO-8859-1 -*-
> # generated by wxGlade 0.4cvs on Thu Oct 11 13:26:19 2007
> 
> import wx
> 
> class MyFrameOne(wx.Frame):
>     def __init__(self, *args, **kwds):
>         # begin wxGlade: MyFrameOne.__init__
>         kwds["style"] = wx.DEFAULT_FRAME_STYLE
>         wx.Frame.__init__(self, *args, **kwds)
>         self.panel = wx.Panel(self, -1)
>         self.staticbox = wx.StaticBox(self.panel, -1, "StaticBox")
>         self.label = wx.StaticText(self.panel, -1, "Field Name")
>         self.textBox = wx.TextCtrl(self.panel, -1, "Field Value")
>         self.button = wx.Button(self.panel, -1, "Edit")
> 
>         self.__set_properties()
>         self.__do_layout()
>         # end wxGlade
> 
>     def __set_properties(self):
>         # begin wxGlade: MyFrameOne.__set_properties
>         self.SetTitle("frame_1")
>         self.label.SetMinSize((-1, 15))
>         # end wxGlade
> 
>     def __do_layout(self):
>         # begin wxGlade: MyFrameOne.__do_layout
>         sizer_1 = wx.BoxSizer(wx.VERTICAL)
>         sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
>         sizer.Add(self.label, 0, wx.ALL, 3)
>         sizer.Add(self.textBox, 0, wx.ALL, 3)
>         sizer.Add(self.button, 0, wx.ALL, 3)
>         self.panel.SetAutoLayout(True)
>         self.panel.SetSizer(sizer)
>         sizer.Fit(self.panel)
>         sizer.SetSizeHints(self.panel)
>         sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
>         self.SetAutoLayout(True)
>         self.SetSizer(sizer_1)
>         sizer_1.Fit(self)
>         sizer_1.SetSizeHints(self)
>         self.Layout()
>         # end wxGlade
> 
> # end of class MyFrameOne
> 
> ## modified from BoaApp
> class App(wx.App):
> 	def OnInit(self):
> 		wx.InitAllImageHandlers()
> 		self.main = MyFrameOne(None)
> 		self.main.Show()
> 		self.SetTopWindow(self.main)
> 		return True
> 
> def main():
> 	application = App(0)
> 	application.MainLoop()
> 
> if __name__ == '__main__':
> 	main()
> 
> </code>
> 
> <code id="modifiedFromGlade" class="fails">
> #!/usr/bin/env python
> # -*- coding: ISO-8859-1 -*-
> #The commented out code from MyFrame was moved to class Panel \
> # and appropriately modified by changing self.panel to self etc
> 
> import wx
> 
> class MyFrameTwo(wx.Frame):
> 	def __init__(self, *args, **kwds):
> 		# begin wxGlade: MyFrameTwo.__init__
> 		kwds["style"] = wx.DEFAULT_FRAME_STYLE
> 		wx.Frame.__init__(self, *args, **kwds)
> ##		self.panel = panel(self, -1)
> 		self.panel = Panel(self, -1)
> 		self.__set_properties()
> 		self.__do_layout()
> 		# end wxGlade
> 
> 	def __set_properties(self):
> 		# begin wxGlade: MyFrameTwo.__set_properties
> 		self.SetTitle("frame_1")
> 		self.label.SetMinSize((-1, 15))
> 		# end wxGlade
> 
> 	def __do_layout(self):
> 		# begin wxGlade: MyFrameTwo.__do_layout
> 		sizer_1 = wx.BoxSizer(wx.VERTICAL)
> ##		sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
> ##		sizer.Add(self.label, 0, wx.ALL, 3)
> ##		sizer.Add(self.textBox, 0, wx.ALL, 3)
> ##		sizer.Add(self.button, 0, wx.ALL, 3)
> ####		self.panel.SetAutoLayout(True)
> ##		self.panel.SetSizer(sizer)
> ##		sizer.Fit(self.panel)
> ##		sizer.SetSizeHints(self.panel)
> 		sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
> 		self.SetAutoLayout(True)
> 		self.SetSizer(sizer_1)
> 		sizer_1.Fit(self)
> 		sizer_1.SetSizeHints(self)
> 		self.Layout()
> 		# end wxGlade
> 
> # end of class MyFrameTwo
> 
> 
> class Panel (wx.Panel):
> 	def __init__(self, *args, **kwds):
> 		self.staticbox = wx.StaticBox(self, -1, "StaticBox")
> 		self.label = wx.StaticText(self, -1, "Field Name")
> 		self.textBox = wx.TextCtrl(self, -1, "Field Value")
> 		self.button = wx.Button(self, -1, "Edit")
> 		__doLayout()
> 
> 	def __doLayout():
> 		sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
> 		sizer.Add(self.label, 0, wx.ALL, 3)
> 		sizer.Add(self.textBox, 0, wx.ALL, 3)
> 		sizer.Add(self.button, 0, wx.ALL, 3)
> 		
> 		# maybe comment this and uncommennt  frame2's corresponding line
> 		panel.SetAutoLayout(True)
> 		
> 		self.SetSizer(sizer)
> 		sizer.Fit(self.panel)
> 		sizer.SetSizeHints(self.panel)
> 		
> 
> ## modified from BoaApp
> class App(wx.App):
> 	def OnInit(self):
> 		wx.InitAllImageHandlers()
> 		self.main = MyFrameTwo(None)
> 		self.main.Show()
> 		self.SetTopWindow(self.main)
> 		return True
> 
> def main():
> 	application = App(0)
> 	application.MainLoop()
> 
> if __name__ == '__main__':
> 	main()
> 
> </code>
> 
> <errorMessages>
>  /home/xaos/xpy/cnc/i2g/prefDialog/test/frame2.py
> Traceback (most recent call last):
>  File "/home/xaos/xpy/cnc/i2g/prefDialog/test/frame2.py", line 82, in ?
> main()
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 78, in main
> application = App(0)
>  File
> "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
> 7473, in __init__
> self._BootstrapApp()
>  File
> "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
> 7125, in _BootstrapApp
> return _core_.PyApp__BootstrapApp(*args, **kwargs)
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 72, in OnInit
> self.main = MyFrameTwo(None)
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 13, in __init__
> self.panel = Panel(self, -1)
>  File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 48, in __init__
> self.staticbox = wx.StaticBox(self, -1, "StaticBox")
>  File
> "/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_controls.py",
> line 990, in __init__
> newobj = _controls_.new_StaticBox(*args, **kwargs)
> TypeError: argument number 1: a 'wxWindow *' is expected, 'Panel' is
> received
> Script terminated.
> 
> </errorMessages>
> 
> 
> It seems as though the complaint is that  a 'wxWindow *' is expected,
> 'Panel' is received
> However, Panel IS a wx.Panel derivative which IS a wx.Window derivative!
> Additionally, the methods in the code of Panel and MyFrameOne seem to be
> identical.
> I can't understand this. Anyone have any thoughts?
> 
> I'm using spe as an IDE
> 
> ~S~
> 
> I taught myself everything I know about Python and wxPython in the lasst
> week and I still don't know everything.
> 
> 


Thanks All,
I didn't make the super() call (java terminology)
to the base class.

this is the only python group (en) on giganews, my first search
 no wx or qt.
gmane.com.python.wxpython is not found
gmane.org came up and crashed firefox 3 times searching for python.
I'll try the wxpython forrum for x stuff, but you spoiled me with prompt
and accurate responses.


~S~

I'm trying to think, but nothing's happening
Slowly I learn, Step by Step ...











From see.signature at no.spam  Wed Oct 17 05:49:42 2007
From: see.signature at no.spam (Eric Brunel)
Date: Wed, 17 Oct 2007 11:49:42 +0200
Subject: Python's coming... from unexpected angles.
References: <5njcjpFil587U1@mid.uni-berlin.de> <87fy0b4e0e.fsf@benfinney.id.au>
	<op.t0aalvq4wepdt4@ericb.pragmadev>
	<877iln488x.fsf@benfinney.id.au>
Message-ID: <op.t0b5k4x3wepdt4@ericb.pragmadev>

On Tue, 16 Oct 2007 13:19:26 +0200, Ben Finney  
<bignose+hates-spam at benfinney.id.au> wrote:

> "Eric Brunel" <see.signature at no.spam> writes:
>
>> Well, I'd definetely vote for a name change for PyPy, as in french,
>> it's pronounced "pee-pee", and yes, it means what you think it
>> means... ;-)
>
> Does that mean you pronounce the word for the serpent as "pee-thon"?

Yes.

> Anyway, the pronunciation of "Python" (and hence the "Py" in "PyPy")
> is however you pronounce that word in the name of the comedy troupe,
> Monty Python. That's where the name originates, after all.

But the average frenchman will also pronounce "monty pee-thon" (I know:  
that's weird...).
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From python at rcn.com  Wed Oct  3 17:22:36 2007
From: python at rcn.com (Raymond Hettinger)
Date: Wed, 03 Oct 2007 14:22:36 -0700
Subject: enumerate overflow
In-Reply-To: <1191441173.674805.162960@y42g2000hsy.googlegroups.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
	<mailman.1448.1191418743.2658.python-list@python.org>
	<7xmyv0nn7f.fsf@ruckus.brouhaha.com>
	<1191432123.619871.226360@g4g2000hsf.googlegroups.com>
	<1191441173.674805.162960@y42g2000hsy.googlegroups.com>
Message-ID: <1191446556.892669.120590@k79g2000hse.googlegroups.com>

On Oct 3, 12:52 pm, koara <ko... at atlas.cz> wrote:
> Thanks everybody for the reply and suggestions, I'm glad to see the
> issues's already been discovered/discussed/almostresolved.

The new code is checked-in.  In Py2.6, enumerate() will no longer
raise an OverflowError and it will automatically shift from ints to
longs.   Will check in something similar for itertools.count() when I
get a chance.


Raymond




From nachogomez at gmail.com  Thu Oct 18 00:59:46 2007
From: nachogomez at gmail.com (=?UTF-8?Q?Ra=C3=BAl_G=C3=B3mez_C.?=)
Date: Thu, 18 Oct 2007 00:59:46 -0400
Subject: Bidirectional communication over unix socket (named pipe)
In-Reply-To: <684b0a740710172143o4ddd60fn15da73991f76130c@mail.gmail.com>
References: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>
	<684b0a740710171420k72c27080mb5402d37d5a81a9c@mail.gmail.com>
	<op.t0dlg5nmx6zn5v@gabriel2.softlabbsas.com.ar>
	<684b0a740710172143o4ddd60fn15da73991f76130c@mail.gmail.com>
Message-ID: <684b0a740710172159v4da8cc4fi813c53d3bfd7ee1@mail.gmail.com>

This is the code I'm running (just the server):

#!/usr/bin/python
import socket
import os, os.path
import time

if os.path.exists("hpcd_sock"):
    os.remove("hpcd_sock")

server = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
server.bind("hpcd_sock")

while True:
    datagram = server.recv(1024)
    if not datagram:
        break
    print datagram
    # the preceding works, and I see the TEST TEST TEST statement the client
sent

    time.sleep(2)
    # it dies on the next statement.
    server.send("Thank you\n")

server.close()
if os.path.exists("hpcd_sock"):
    os.remove("hpcd_sock")


And this is the error that its giving me:

Traceback (most recent call last):
  File "server_socket.py", line 13, in <module>
    datagram = server.recv(1024)
socket.error: (22, 'Invalid argument')
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071018/ef908875/attachment.html>

From fw3 at hotmail.co.jp  Wed Oct 10 14:51:58 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Wed, 10 Oct 2007 18:51:58 +0000
Subject: how to rerun a function after edit it?
In-Reply-To: <1192041527.105596.305280@o80g2000hse.googlegroups.com>
References: <1192041012.099313.282600@d55g2000hsg.googlegroups.com>
	<1192041527.105596.305280@o80g2000hse.googlegroups.com>
Message-ID: <BLU107-W57FB4B8DD049425B01D410B4A60@phx.gbl>


Hi,
 
I am looking for a way to rerun functions after I changed them. This is very critical during the development stage. Currently I have to quit python and restart the python to run the functions. I found the reload function. But it needs the module name. In my case, I import the module using from filename import *. I do not know how to reload it.
 
Using IDLE, it seems that everytime when I click F5, it reloads the function and execute them. I want to find out how to do it without IDLE.
 
For the python script, I use execfile('filename.py') to execute it. Is it possible by directly typing filename to run it? 
 
 
Thanks
 
Frank
_________________________________________________________________
???????????????????????????MSN ???????
http://keyword.jp.msn.com/default.aspx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/eb74e517/attachment.html>

From richard.james861 at gmail.com  Wed Oct  3 05:23:04 2007
From: richard.james861 at gmail.com (richard.james861 at gmail.com)
Date: Wed, 03 Oct 2007 09:23:04 -0000
Subject: A Must Read!!!
Message-ID: <1191403384.456238.92870@22g2000hsm.googlegroups.com>

I have found an excellent resource on Object Oriented Programming.


http://technical-talk.com/SoftDev/OOP/OOPBASICS.asp



From commercials at inmail24.com  Mon Oct  8 13:16:19 2007
From: commercials at inmail24.com (Julius)
Date: Mon, 8 Oct 2007 19:16:19 +0200
Subject: How to create a file on users XP desktop
In-Reply-To: <470A489D.5020507@timgolden.me.uk>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191854927.113225.67880@o80g2000hse.googlegroups.com>
	<470A489D.5020507@timgolden.me.uk>
Message-ID: <200710081916.19823.commercials@inmail24.com>

On Monday 08 October 2007 17:11:25 Tim Golden wrote:
> kyosohma at gmail.com wrote:
> > On Oct 8, 9:19 am, goldtech <goldt... at worldpost.com> wrote:
> >>> from win32com.shell import shell, shellcon
> >>> desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
> >>> </code>
> >>
> >> Tim,
> >>
> >> How did you learn Win32com?
> >>
> >> Other than the O'Reilly book, I've never found a lot of
> >> documentation.
> >>
> >> Trying to browse COM in PythonWin is tough - there's tons of stuff in
> >> there. I've never been able to find the Win32com classes, methods,
> >> usage examples when I browse COM in PythonWin.
> >>
> >> For example where is, shell.SHGetFolderPath and shellcon.CSIDL_DESKTOP
> >> officially documented?
> >>
> >> Did you learn from using Visual C++ or VB? How did you learn this
> >> stuff?
> >>
> >> Thanks,
> >> Lee G.
> >
> > Pretty much the only place to learn stuff that's not in the PyWin32
> > docs is on one of the MSDN sites. Yes, that can suck. Here's the
> > general page: http://msdn2.microsoft.com/en-us/default.aspx
> >
> > You can google for them too to get direct links to the MSDN page.
> >
> > The ActiveState Python (AKA ActivePython) has an IDE that allows you
> > to browse the COM module. It also has a help file that allows you to
> > browse the PyWin32 docs locally. I think you can download that without
> > downloading ActivePython.
> >
> > Mike
>
> FWIW, the pywin32 distribution itself also comes with a local
> .chm file. But aside from that, there have been several abortive
> attempts -- including by Mike & myself! -- to get some kind of
> online help going for pywin32, but nothing's really gained traction,
> and we've all got more interesting things to be doing...
>
> One point to bear in mind that, more or less, the pywin32 stuff
> just wraps the MS API really closely, mostly doing just enough
> of the messy plumbing to present the API "objects" as Python
> objects. That's to say: find out how to do it from a C++ or VB
> or Delphi tutorial and translating into Python often isn't hard.
>
> As it happens I've been using Windows APIs for a few years,
> so I have a bit of a head start. But I've answered quite
> a few questions on python-win32 by putting the subject line
> into Google, picking a likely-looking response and translating
> it into Python.
>
> In this case ("How to create a file on users XP desktop") the
> question was too broad and tended to throw up user-oriented
> answers. I tried a few permutations, including limiting the
> search to msdn.microsoft.com, none of which showed much on the
> first couple of pages. A search of the pywin32.chm files does
> point in the right direction, but the fact is that the shell
> functionality exposed by Windows which does this kind of
> stuff is non-intuitive.
>
> While I think everyone agrees that the Windows side of Python
> could benefit from more and better docs, the general answer to:
> How do I do X in Python under Windows? is: How do I X under Windows?
>
> TJG
----------
Free version Zoner Photo Studio 9 - http://www.zps9.com/



From quentel.pierre at wanadoo.fr  Wed Oct  3 16:58:53 2007
From: quentel.pierre at wanadoo.fr (Pierre Quentel)
Date: Wed, 03 Oct 2007 13:58:53 -0700
Subject: List of objects X Database
In-Reply-To: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
References: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
Message-ID: <1191445133.740166.171930@50g2000hsm.googlegroups.com>

On 3 oct, 22:01, MindMaster32 <egerm... at gmail.com> wrote:

Hi,

Maybe PyDbLite (http://quentel.pierre.free.fr/PyDbLite/index.html) is
what you need : a single Python module, compatible with Python 2.3+,
that lets you manipulate data in memory

You can manage a database like this :

import PyDbLite
db = PyDbLite.Base("dummy")
db.create("record,"artist","released") # fields are untyped
db.insert("Closer","Joy Division",1980)
db.insert("Different Class","Pulp",1996)
db.commit() # save to disk
print [ r for r in db if r["released"] > 1990 ]
print db(artist="Joy Division")

Regards,
Pierre



From e0427417 at student.tuwien.ac.at  Sun Oct  7 12:46:31 2007
From: e0427417 at student.tuwien.ac.at (Mathias Panzenboeck)
Date: Sun, 07 Oct 2007 18:46:31 +0200
Subject: weakrefs and bound methods
In-Reply-To: <5msflnFepbdqU1@mid.uni-berlin.de>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
Message-ID: <47090d70$0$11610$3b214f66@tunews.univie.ac.at>

Marc 'BlackJack' Rintsch wrote:
> On Sun, 07 Oct 2007 16:51:33 +0200, Mathias Panzenboeck wrote:
> 
>> import weakref
>>
>> class Wrapper(object):
>> 	def __init__(self,x):
>> 		self.x = weakref.ref(x)
>>
>> 	def __call__(self,*args,**kwargs):
>> 		x = self.x()
>> 		if x is None:
>> 			print "lost reference"
>> 		else:
>> 			return x(*args,**kwargs)
>>
>> class Foo(object):
>> 	def __init__(self):
>> 		self._methods = set()
>> 		self._methods.add(Wrapper(self._foo))
>>
>> 	def _foo(self):
>> 		print "_foo"
>>
>> 	def callMethods(self):
>> 		for method in self._methods:
>> 			method()
>>
>> 	def __del__(self):
>> 		print "del Foo"
>>
>> class Bar(object):
>> 	def __init__(self):
>> 		self._methods = set()
>> 		self._methods.add(self._foo)
>>
>> 	def _foo(self):
>> 		print "_foo"
>>
>> 	def callMethods(self):
>> 		for method in self._methods:
>> 			method()
>>
>> 	def __del__(self):
>> 		print "del Bar"
>>
>>
>>
>> Now look what happens when I do this:
>>
>>>>> f=Foo()
>>>>> f.callMethods()
>> lost reference
>>>>> del f
>> del Foo
>>>>> b=Bar()
>>>>> b.callMethods()
>> _foo
>>>>> del b
>>>>>
>> Foo looses the reference to its method but Bar on the other hand has a refloop and
>> never gets deleted.
> 
> ``del b`` just deletes the name `b`.  It does not delete the object. 
> There's still the name `_` bound to it in the interactive interpreter. 
> `_` stays bound to the last non-`None` result in the interpreter.
> 

Why is it then that f (instance of Foo) really gets deleted? (__del__ is called)

> Drop all those `__del__()` methods as they prevent the garbage collector
> from collecting "cycles".
> 
> Ciao,
> 	Marc 'BlackJack' Rintsch

I only inserted them so I can see if the objects are really freed. How can I see that
without a __del__ method?


Thanks so far,
panzi


From zhurenfu888 at hotmail.com  Fri Oct 19 15:15:35 2007
From: zhurenfu888 at hotmail.com (nike shoes)
Date: Fri, 19 Oct 2007 12:15:35 -0700
Subject: Wholesale all NIKE.shox.Air max.AF1.TN.Jordan.shoes.Apple Ipods Nano,
	Xbox 360, Sony PS3,
	Sony PSP.wii.all laptops http://www.new-nikeshoes.com
Message-ID: <1192821335.239754.151340@e34g2000pro.googlegroups.com>

 hi
We wholesale all laptops
Sony VGN-CR13/B   380$
Sony VGN-CR13/L    350$
 Sony VGN-CR15/B  320$
 Sony VGN-CR13/P  480$
 Sony VGN-C21CH  450$
 Sony VGN-SZ44CN   580$
Sony VGN-C22CH/W  620$
Sony VGN-N17C  480$
 Sony VGN-CR13/W  580$
Sony VGN-FZ15   560$
Apple MacBook   580$
Apple MacBook Pro(MA896CH/A)680$
Apple MacBook Pro(MA896CH/A)  630$
Apple MacBook (MB063CH/A)  580$
Apple MacBook Pro(MA895CH/A)  580$
Apple MacBook(MB062CH/A)  590$
 Apple MacBook(MA700CH/A)  580$
 Apple MacBook(MA701CH/A) 550$
Apple MacBook Pro ?MA610CH/A? 650$
 Apple MacBook Pro (MA611CH/A) 680$
Apple MacBook (MA699CH/A)   580$
(1).all products are all original and new
(2).they have 1year international warranty.
(3).free shipping include ems, tnt, dhl, ups. you may choose one kind
(4).deliver time is in 7 days to get your door
We insist the principia: Prestige first,high-quality,competitive
price,
best services,and timely delivery.
Website: http://www.new-nikeshoes.com
 msn:  zhushao999 at hotmail.com
Hong-da  Co., Ltd.hi
We are wholesaler of Nike Jordan and Other Shoes in China. We are big
Shoes Manufacturer in China. We supply many kinds of Shoes, such as
Nike Shoes, Jordan 1-22, Air Jordan, AF1, DUNK, Air max series etc.
Most of them are in stock and can be supplied surely on time. All
these shoes are packed with original-boxes and cards. So we can offer
series of brand Nike shoe with the lowest price and high quality, We
are looking forward to doing business with you

Very fast and safety delivery by TNT, UPS, DHL OR EMS, we can delivery
within 24 hours upon receiving your payment. It is very safe door to
door service, never get problems with customs.



There are various and latest styles for your choice in our website.
Our main markets are the USA, the UK, Germany, France, Italy, Greece,
Jordan, Australia, Canada,Sweden, and many other countries in Europe
and the Middle East regions.


We insist the principia: Prestige first,high-quality,competitive
price,
best services,and timely delivery.
Website: http://www.new-nikeshoes.com
 msn:  zhushao999 at hotmail.com
Hong-da  Co., Ltd.  hi
 our brands , Ipod nano 1G 2G 4G 8G 30G 60G ,Ps3  ,psp ,wii,are also
available for sale at cheaper rate. They are all brand new with full
accessories and 1 year international warranty, unlocked, work
effectively with any network worldwide and come with user manual guide
in various languages.

Our minimum order is 10 units and we receive payment by moneygram
international money transfer or western union money transfer. There is
10% sales discount for order above 20 units to 50 units,15% discount
for order above 50 units to 100 units and 20% discount for order above
100 units.
Ipod nano 1G 45$ ,2G 55$, 4G 65$,8G 70$, 30G 100$ ,60G 120$
ps3  60GB 300$  20GB 180$
psp  150$
wii  200$

(1).all products are all original and new
(2).they have 1year international warranty.
(3).free shipping include ems, tnt, dhl, ups. you may choose one kind
(4).deliver time is in 7 days to get your door
We insist the principia: Prestige first,high-quality,competitive
price,
best services,and timely delivery.
Website: http://www.new-nikeshoes.com
 msn:  zhushao999 at hotmail.com
Hong-da  Co., Ltd.



From sjmachin at lexicon.net  Tue Oct  9 18:05:49 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 08:05:49 +1000
Subject: List loops
In-Reply-To: <mailman.24.1191943563.916.python-list@python.org>
References: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>
	<mailman.24.1191943563.916.python-list@python.org>
Message-ID: <470bfb41$1@news.eftel.com.au>

On 10/10/2007 1:00 AM, Chris Mellon wrote:
> On 10/9/07, Tommy Grav <tgrav at mac.com> wrote:
>> Hi everyone,
>>
>>    I have a list of objects where I have want to do two loops.
>> I want to loop over the list and inside this loop, work on all
>> the elements of the list after the one being handled in the outer
>> loop. I can of course do this with indexes:
>>
>>  >>> alist = range(3)
>>  >>> for i in xrange(len(alist)):
>> ...   for j in xrange(i+1,len(alist)):
>> ...     print i,j,alist[i],alist[j]
>> ...
>> 0 1 0 1
>> 0 2 0 2
>> 1 2 1 2
>>  >>>
>>
>>
>> Is there a way to do this without using indexes?
>>
> 
>>>> for idx, i in enumerate(alist):
> ...     for jdx, j in enumerate(range(1,4)):

# BZZZZZZT Holy hardwired hogwash, Batman!

> ...         print idx, jdx, i, j
> ...
> 0 0 0 1
> 0 1 0 2
> 0 2 0 3
# BZZZZZZZT no such animal as 3
> 1 0 1 1
# BZZZZZZZT "after"???
> 1 1 1 2
> 1 2 1 3
# BZZZZZZZT no such animal as 3
> 2 0 2 1
> 2 1 2 2
> 2 2 2 3
# BZZZZZZZT "after"???


From gagsl-py2 at yahoo.com.ar  Wed Oct 24 01:26:29 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 24 Oct 2007 02:26:29 -0300
Subject: Python equivalent to *nix 'banner' problem
References: <BAA666C1E230E143BB9E839ED55EF19407863F81@emss02m12.us.lmco.com>
Message-ID: <op.t0or2fz9x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 23 Oct 2007 20:29:53 -0300, Looney, James B  
<james.b.looney at lmco.com> escribi?:

> Regardless of whether I run this from IRIX or Windows, I get the same
> results.  I'm expecting the string "ab" to be displayed twice.  Instead,
> the second time, I get ABB.  If I add a 3rd print line, I'll get ABBB.
> I'm now stuck trying to understand what's going on.  It seems like
> there's an overflow somewhere since it's overwriting my dictionary for
> the letter 'a', but I don't know how it's doing it.

> ########
>    def getBanner( self, inputStr ):
>       retVal = []
>       for c in inputStr:
>          banneredCharList = self.myBannerDict[ c ]
>          if( 0 == len( retVal ) ):
>             retVal = banneredCharList
>          else:
>             for i in range( len( banneredCharList ) ):
>                retVal[ i ] += banneredCharList[ i ]

banneredCharList is a list, taken from myBannerDict.
retval = banneredCharList does not make a copy, just points the name  
retval to the list.
Later, retval[i] += ... is modifying the list, which is always the same,  
so you are modifying myBannerDict actually.

Try using: retVal = banneredCharList[:]


-- 
Gabriel Genellina



From pangj at juno.com  Sat Oct 27 01:52:05 2007
From: pangj at juno.com (Jeff Pang)
Date: Sat, 27 Oct 2007 05:52:05 GMT
Subject: transmit an array via socket
Message-ID: <20071026.225205.281.0@webmail13.vgs.untd.com>

I want to transmit an array via socket from a host to another.
How to do it? thank you.

--jeff
_____________________________________________________________
Largest network of startups. Find new startup opportunities. Click here.
http://thirdpartyoffers.juno.com/TGL2111/fc/Ioyw6iieVGxKk95ANW9UY46ZNrfO3Mp24IBoFARajXJnlSuTKfzxO4/




From tjreedy at udel.edu  Wed Oct 17 21:50:48 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 17 Oct 2007 21:50:48 -0400
Subject: Python Labs Move
References: <000601c8110f$999bdf10$0300a8c0@yourpa86z1i3g7>
Message-ID: <ff6e5p$piq$1@ger.gmane.org>


"Bill Garey" <bilgarey at bellsouth.net> wrote in message 
news:000601c8110f$999bdf10$0300a8c0 at yourpa86z1i3g7...
|What is PYTHON 2.2.1   and what does it do?

It is the interpreter for the 2.2 version of the Python language.
See the tutorial at python.org.

| I see  the Program on my list of programs but don't know how to use it , 
or what it is!

If you have a windows machine, the maker probably is using it for some of 
their 'value added' administrative scripts.

tjr





From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 14:26:54 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 20:26:54 +0200
Subject: Problem of Readability of Python
In-Reply-To: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <470924c8$0$15774$426a34cc@news.free.fr>

Licheng Fang a ?crit :
> Python is supposed to be readable, but after programming in Python for
> a while I find my Python programs can be more obfuscated than their C/C
> ++ counterparts sometimes. Part of the reason is that with
> heterogeneous lists/tuples at hand, I tend to stuff many things into
> the list and *assume* a structure of the list or tuple, instead of
> declaring them explicitly as one will do with C structs. So, what used
> to be
> 
> struct nameval {
>     char * name;
>    int val;
> } a;
> 
> a.name = ...
> a.val = ...
> 
> becomes cryptic
> 
> a[0] = ...
> a[1] = ...

Use dicts, not lists or tuples:

a = dict(name='yadda', val=42)
print a['name']
print a['val']

> Python Tutorial says an empty class can be used to do this. But if
> namespaces are implemented as dicts, wouldn't it incur much overhead
> if one defines empty classes as such for some very frequently used
> data structures of the program?

If you do worry about overhead, then C is your friend !-)

More seriously: what do you use this 'nameval' struct for ? If you 
really have an overhead problem, you may want to use a real class using 
__slots__ to minimize this problem, but chances are you don't need it.



From malkia at gmail.com  Mon Oct  1 02:22:41 2007
From: malkia at gmail.com (Dimiter "malkia" Stanev)
Date: Sun, 30 Sep 2007 23:22:41 -0700
Subject: Program inefficiency?
In-Reply-To: <mailman.1282.1191082697.2658.python-list@python.org>
References: <NYOBGCEXSMTP22SiTqg00150043@NYOBGCEXSMTP22.uswin.ad.vzwcorp.com>
	<mailman.1282.1191082697.2658.python-list@python.org>
Message-ID: <5mbi1iFclg4cU1@mid.individual.net>

Sorry for intruding here,

But one inefficiency of the Windows XP (not NTFS in general) is that 
NTFS must generate 8.3 names (for old-DOS/Win31/Win95/Win98/WinME 
compatibility).

Generating such a name could slow down the system, as the name must be 
unique, and finding such unique name would be slow.

Off course this should only affect the CREATION, not the SEARCH 
(although with 8.3 support enabled you might end up with x2 times more 
entries (if all your names are bigger than 8.3)).

Here's more:

http://www.windowsdevcenter.com/pub/a/windows/2005/02/08/NTFS_Hacks.html

Thanks,
Dimiter "malkia" Stanev.

Michael.Coll-Barth at VerizonWireless.com wrote:
>  
> 
>> -----Original Message-----
>> From: hall.jeff at gmail.com
>> the program works great except for one thing. It's significantly
>> slower through the later files in the search then through the early
>> ones... Before anyone criticizes, I recognize that that middle section
>> could be simplified with a for loop... I just haven't cleaned it
>> up...
>>
>> The problem is that the first 300 files take about 10-15 seconds and
>> the last 300 take about 2 minutes... If we do more than about 1500
>> files in one run, it just hangs up and never finishes...
>>
>> Is there a solution here that I'm missing? What am I doing that is so
>> inefficient?
> 
> You did not mention the OS, but because you are using
> "pathname\editfile.txt", it sounds like you are using an MS OS.  From
> past experience with various MS OSes, I found that as the number of
> files in a directory increases the slower your process runs for each
> file.  You might try putting these files into multiple sub-directories.
> 
> 
> The information contained in this message and any attachment may be
> proprietary, confidential, and privileged or subject to the work
> product doctrine and thus protected from disclosure.  If the reader
> of this message is not the intended recipient, or an employee or
> agent responsible for delivering this message to the intended
> recipient, you are hereby notified that any dissemination,
> distribution or copying of this communication is strictly prohibited.
> If you have received this communication in error, please notify me
> immediately by replying to this message and deleting it and all
> copies and backups thereof.  Thank you.
> 


From bj_666 at gmx.net  Tue Oct  9 19:26:50 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 9 Oct 2007 23:26:50 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n244rFf0dahU2@mid.uni-berlin.de> <13go104macd7q15@corp.supernews.com>
Message-ID: <5n2h1qFf0dahU4@mid.uni-berlin.de>

On Tue, 09 Oct 2007 22:43:16 +0000, Steven D'Aprano wrote:

> On Tue, 09 Oct 2007 19:46:35 +0000, Marc 'BlackJack' Rintsch wrote:
> 
>> On Tue, 09 Oct 2007 18:08:34 +0000, Steven D'Aprano wrote:
>> 
>>>>>> L = []
>>>>>> id(L)
>>> 3083496716L
>>>>>> L += [1]
>>>>>> id(L)
>>> 3083496716L
>>> 
>>> It's the same L, not rebound at all.
>> 
>> It *is* rebound.  To the same object, but it *is* assigned to `L` and
>> not just mutated in place.
> 
> Picky picky.
>
> Yes, technically there is an assignment of L to itself. I was sloppy to 
> say "not rebound at all", because when you write an augmented assignment 
> method you have to return self if you want to implement in-place 
> mutation. But I hardly call "rebinding to itself" any sort of rebinding 
> worth the name :)

Maybe picky but that detail was the source of the OPs confusion because it
introduced a new attribute on the subclass.

Ciao,
	Marc 'BlackJack' Rintsch


From happyhondje at gmail.com  Fri Oct 26 09:59:23 2007
From: happyhondje at gmail.com (happyhondje at gmail.com)
Date: Fri, 26 Oct 2007 06:59:23 -0700
Subject: An efficient, pythonic way to calculate result sets
In-Reply-To: <1193406904.106002.278830@19g2000hsx.googlegroups.com>
References: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
	<1193358833.133666.253680@k35g2000prh.googlegroups.com>
	<1193406904.106002.278830@19g2000hsx.googlegroups.com>
Message-ID: <1193407163.940541.270200@k79g2000hse.googlegroups.com>

> def cross_nodups(*args):
>     'Cross product after eliminating repeat elements, keeping constant
> size'
>     ans = [[]]
>     for arg in args:
>         ans = [x+[y] for x in ans for y in arg if y not in x]
>     return ans
>
> def choose_first(obj1, *args):
>     'Assume a choice of a first object'
>     return cross_nodups(frozenset((obj1,)), *args[1:])

Oops, crap, I pasted the unchanged cross_nodups() you wrote. My
adjusted variety:

def cross_nodups(*args):
    'Cross product after eliminating repeat elements, keeping constant
size'
    ans = [[]]
    for arg in args:
        ans = [frozenset(list(x)+[y]) for x in ans for y in arg if y
not in x]
    return set(ans)

Anyhow, thank you! :)



From mail at microcorp.co.za  Sat Oct  6 03:20:36 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 6 Oct 2007 09:20:36 +0200
Subject: tkinter question
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com><op.tzpugxp2wepdt4@ericb.pragmadev><470629D1.2040404@codebykevin.com><op.tzp40yrqwepdt4@ericb.pragmadev>
	<47063964.7000809@codebykevin.com>
Message-ID: <01ed01c807ed$901380e0$03000080@hendrik>

"Kevin Walzer" <kw at codebykevin.com> wrote:

> I find "pack" to be more flexible than "grid," so I prefer it for 
> complex layouts. "grid" is better for simple layouts.

*does a double take*  are you serious? - my experience is that
pack is only good for simple single row or single column stuff.

- Hendrik




From torriem at chem.byu.edu  Sun Oct  7 13:01:10 2007
From: torriem at chem.byu.edu (Michael Torrie)
Date: Sun, 07 Oct 2007 11:01:10 -0600
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
In-Reply-To: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
Message-ID: <470910D6.7040902@chem.byu.edu>

timw.google wrote:
> Hi
> 
> I want to write a python script that runs rsync on a given directory
> and host. I build the command line string, but when I try to run
> subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
> os.system(cmd), I get prompted for my login password. I expected this,
> but when I try to give my password, it's echoed back to the terminal
> and the special characters in the password is (I think) getting
> interpreted by the shell (zsh)
> 
> I can't ssh w/o supplying a password. That's the way the security is
> set up here.
> 
> How do I use python to do this, or do I just have to write a zsh
> script?

You need to use the pexpect module.

> 
> Thanks.
> 



From scripteaze at gmail.com  Tue Oct 23 01:14:01 2007
From: scripteaze at gmail.com (scripteaze at gmail.com)
Date: Tue, 23 Oct 2007 05:14:01 -0000
Subject: basic web auth and verification
Message-ID: <1193116441.563894.218650@v23g2000prn.googlegroups.com>

Trying to figure out how to add login verfication. I believe it is
logging me in, but theres no way to really tell..any ideas? or
tutorials out there that can exaplain this to me?

Thanks

import urllib,urllib2,cookielib

passlst = open(passfile, 'r').readlines()
url="http://somesite"
cj = cookielib.LWPCookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
urllib2.install_opener(opener)
TheForm = urllib.urlencode({"username":"myid","password":"mypas"})
request = urllib2.Request(url, TheForm)
result = urllib2.urlopen(request)
html=result.read()
result.close()



From bj_666 at gmx.net  Thu Oct 11 12:35:36 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 16:35:36 GMT
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<1192112491.859246.148620@19g2000hsx.googlegroups.com>
	<1192117169.037931.285890@g4g2000hsf.googlegroups.com>
Message-ID: <5n71moFghr61U7@mid.uni-berlin.de>

On Thu, 11 Oct 2007 15:39:29 +0000, Artur Siekielski wrote:

> On Oct 11, 4:21 pm, "sjdevn... at yahoo.com" <sjdevn... at yahoo.com> wrote:
>> > 2. Properties define (a part of) public interface of a class. When
>> > using fields for public access, you must tell this explicitly in
>> > documentation, or use name convention.
>>
>> Property vs. attribute doesn't make any difference here: both of them
>> are public, and part of the external interface, unless they're named
>> with a leading underscore.
> 
> Nice thing about properites is that they are defined in more declarative
> way - in class body. Attributes are "defined" in a piece of code (which
> can be long and can contain loops etc.) by assigning a value to 'self'.

The convention is to bind all attributes in `__init__()`, possibly to
`None` if the real value is not available at that time, and document at
least the public ones in the class' docstring.  Tools like `pylint` check
for attributes that are introduced in other methods than `__init__()` and
give a warning.

Ciao,
	Marc 'BlackJack' Rintsch


From lew at lewscanon.com  Sat Oct 20 22:42:26 2007
From: lew at lewscanon.com (Lew)
Date: Sat, 20 Oct 2007 22:42:26 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <kjelh35gcbhbs49hg33tsc5iojaep9c817@4ax.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<1192929647.405490.318720@v29g2000prd.googlegroups.com>
	<kjelh35gcbhbs49hg33tsc5iojaep9c817@4ax.com>
Message-ID: <pN6dnVf5bfEPIYfanZ2dnUVZ_gGdnZ2d@comcast.com>

George Neuner wrote:
> An attractive person of the opposite sex stands on the other side of
> the room.  You are told that your approach must be made in a series of
> discrete steps during which you may close half the remaining distance
> between yourself and the other person.
> 
> Mathematician: "But I'll never get there!"
> 
> Engineer: "I'll get close enough."

Mechanician (to the researcher): Hey, you look pretty good.  What's your sign?

-- 
Lew


From rayrayson at gmail.com  Fri Oct  5 02:20:14 2007
From: rayrayson at gmail.com (rayrayson at gmail.com)
Date: Fri, 05 Oct 2007 06:20:14 -0000
Subject: Adding behaviour for managing "task" dependencies
In-Reply-To: <1191349384.994881.23190@g4g2000hsf.googlegroups.com>
References: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
	<1191349384.994881.23190@g4g2000hsf.googlegroups.com>
Message-ID: <1191565214.429706.193050@50g2000hsm.googlegroups.com>

On Oct 2, 2:23 pm, Paddy <paddy3... at googlemail.com> wrote:
> You could use a professional Job scheduling system such as LSF or Sun Grid Engine
> that both support job dependencies (and a whole lot more).

Recently, Grid Engine added support the powerful "Array Job
Interdependencies" support.

http://gridengine.sunsource.net/news/GE61ARIsnapshot-announce.html

But for simple job or task dependencies, the existing dependency rule
would be more than fine.

Mike, the project homepage for SGE is: http://gridengine.sunsource.net

Rayson



>
> For example, search for 'Job Dependencies' on this page:
>  http://docs.sun.com/app/docs/doc/820-0699/6nce0ht7s?a=view
>
> - Paddy.




From attackwarningred at yahoo.co.uk  Tue Oct 23 18:44:20 2007
From: attackwarningred at yahoo.co.uk (attackwarningred)
Date: Tue, 23 Oct 2007 23:44:20 +0100
Subject: Using arrays in Python - problems.
Message-ID: <471E7944.60401@yahoo.co.uk>

Dear All,
         Hello! I've just started to use Python and its a lovely 
language! I've previously programmed in Fortran 95 and have just began 
to use numpy. I'm having a few problems with arrays in Python though and 
wondered if someone could offer me some advice?
    I wrote the following Fortran code to randomly generate numbers from 
a log-normal distribution for use in a Monte Carlo model:

do n=1,shotcount
	F(n)=G05DEF(F_mean,F_sd)
enddo

The array F(n) is dynamically allocated earlier on and is sized with 
reference to shotcount, the number of iterations the model performs. The 
problem is I can't get something like this to run in Python using numpy, 
and for the size of the array to be sized dynamically with reference to 
the variable shotcount. I acknowledge that my knowledge of Python is 
still really basic (I only started learning it a few days ago) and I'm 
trying to get out of the Fortran programming mindset but I'm stuck and 
don't seem to be able to get any further. If anyone could help I'd be 
really grateful. Thanks very much in advance.

Best wishes,
Gareth.

-- 

attackwarningred at yahoo.co.uk

665.9238429876 - Number of the Pentium Beast


From steve at holdenweb.com  Wed Oct  3 10:08:53 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 10:08:53 -0400
Subject: gdbm objects not iterable?
In-Reply-To: <47039B0B.7080301@shopzeus.com>
References: <47039B0B.7080301@shopzeus.com>
Message-ID: <fe07ph$6a0$1@sea.gmane.org>

Laszlo Nagy wrote:
>   Hi All,
> 
> gdbm objects have a "firstkey" and a "nextkey" method. So if I want 
> iterate through the keys (which I often do) then I have to do this:
> 
> def itergdbmkeys(gdbm_obj):
>     key = gdbm_obj.firstkey()
>     if key is None:
>         raise StopIteration
>     yield key
>     while True:
>         key = gdbm_obj.nextkey(key)
>         if key is None:
>             raise StopIteration
>         yield key
> 
> Then I can do this:
> 
> for key in itergdbmkeys(gdbm_obj):
>     process(key,gdbm_obj)
> 
> I wonder why we do not have a "next()" method, which could return an 
> iterator instantly. I don't think that it would be harmful, but 
> definitely it would be useful. Then we could do this:
> 
> for key in gdbm_obj:
>     process(key,obj)
> 
> I know that this is a very small change, but it can make gdbm objects 
> look more like dictionaries.
> 
> Please make comments. :-)
> 
What you would need is a method to *create and return* a generator, and 
it's the generator that should have the next() method. Otherwise you 
can't have two independent iterations over the same gdbm object (and you 
don't have a way of ensuring iteration starts at the beginning).

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From parnell.s at comcast.net  Wed Oct 17 15:37:52 2007
From: parnell.s at comcast.net (Ixiaus)
Date: Wed, 17 Oct 2007 12:37:52 -0700
Subject: Noob questions about Python
Message-ID: <1192649872.335816.194250@e34g2000pro.googlegroups.com>

I have recently (today) just started learning/playing with Python. So
far I am excited and impressed (coming from PHP background).

I have a few questions regarding Python behavior...

val = 'string'
li = list(val)
print li.reverse()

returns nothing, but,

val = 'string'
li = list(val)
li.reverse()
print li

returns what I want. Why does Python do that?

Also I have been playing around with Binary math and noticed that
Python treats:

val = 00110

as the integer 72 instead of returning 00110, why does Python do that?
(and how can I get around it?)

Grateful for any replies!



From jcd at sdf.lonestar.org  Sun Oct 28 21:26:42 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Sun, 28 Oct 2007 21:26:42 -0400
Subject: Pari Python
In-Reply-To: <c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>	<fg2o3n$q62$1@ger.gmane.org>
	<c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
Message-ID: <472536D2.8070004@sdf.lonestar.org>

Anton Mellit wrote:
> And I think (correct me if I am wrong) that the ^ operator (xor) is
> used very very infrequently. And it is not difficult to replace all ^
> with say ^^. 
Oh God!  *Please* don't start that conversation again.  We had a thread
about bitwise operators a few weeks back.  Half the people will pipe up
and say, "Nope, I never use them," and the other half will say, "I can't
live without them."  And the ones who can't live without them tend to be
the ones doing more math-heavy work.

It's not worth messing with the bitwise operators. 
> The division is probably used more often, but python has
> this trend anyway - to replace division with 'true' division, so
> people should use // when they divide integers and expect an integer

If you want to use true division, delay your release until python 3 or
import it from __future__ yourself.  Don't break all current code by
recompiling python to do it.  You'll alienate most of your potential
user base, and develop a reputation for not playing well with others.

Cheers,
Cliff




From athulcv at gmail.com  Sat Oct 27 06:00:13 2007
From: athulcv at gmail.com (Athul)
Date: Sat, 27 Oct 2007 03:00:13 -0700
Subject: ""MAN+_-WOMAN_+|=SEX WORLD""
Message-ID: <1193479213.083737.230480@i38g2000prf.googlegroups.com>

""MAN+_-WOMAN_+|=SEX WORLD""
""DATING AND ROMANCE"""

*********************************
http://www.freewebs.com/sociwok/
********************************

http://amigos.com/go/g903136-pmem



From zachREMOVE at MEin.tu-clausthal.de  Mon Oct  1 05:37:10 2007
From: zachREMOVE at MEin.tu-clausthal.de (Gabriel Zachmann)
Date: Mon, 01 Oct 2007 11:37:10 +0200
Subject: Bug with lists of pairs of lists and append()
In-Reply-To: <mailman.1268.1191022197.2658.python-list@python.org>
References: <slrnffqvr6.uut.zach@zaphome.in.tu-clausthal.de>
	<mailman.1268.1191022197.2658.python-list@python.org>
Message-ID: <fdqf3v$jbd$2@ariadne.rz.tu-clausthal.de>


> If you're familiar with C or C++, think of s as holding a pointer to x
> which in turn holds a pointer to l and r, so when you change l or r, x
> (and s indirectly) is still pointing to the same lists which by the

AH - thanks a million -- that makes it crystal clear!
[Python's apparent simplicity keeps making me forget that everything is 
a pointer ...]

> BTW:  It's not really "misbehaving."  It's doing exactly what you're
> telling it to do ;-)

i had a feeling ... ;-)

Cheers,
Gabriel.

-- 
______________________________________________________________
Life is so constructed that the event does not, cannot,
will not match the expectation.             (Charlotte Bronte)
______________________________________________________________
  zach in.tu-clausthal.de      __@/'    www.gabrielzachmann.org
______________________________________________________________


From paul.hankin at gmail.com  Sun Oct 14 07:33:03 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sun, 14 Oct 2007 11:33:03 -0000
Subject: Safely dealing with arbitrary file objects
In-Reply-To: <13h355hnfnngca6@corp.supernews.com>
References: <13h355hnfnngca6@corp.supernews.com>
Message-ID: <1192361583.936935.57550@q3g2000prf.googlegroups.com>

On Oct 14, 5:01 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> I have found myself writing functions rather like these:
>
> def openfile(filename):
>     if filename == '-':
>         # convention for shell scripts in Unix-land is to use
>         # '-' for stdin/stdout for reading/writing.
>         outfile = sys.stdout
>     if filename == '2-':
>         outfile = sys.stderr
>     else:
>         outfile = file(filename, 'w')
>     return outfile
>
> def closefile(fileobj):
>     # don't close standard file objects, or their replacements
>     if not fileobj in (sys.stdout, sys.stderr, sys.stdin,
>     sys.__stdout__, sys.__stderr__, sys.__stdin__):
>         fileobj.close()
>
> def processfile(filename):
>     outfile = openfile(filename)
>     try:
>         # lots of processing here, which may raise exceptions
>         var = "stuff happens"
>         outfile.write(var)
>     finally:
>         closefile(outfile)
>
> A question:
>
> I know I'm being paranoid about not closing files I shouldn't close, but
> am I being excessively paranoid, or not paranoid enough?
>
> Suggestions for improvements welcome; while I'm happy to read suggestions
> using the new with statement, I can't yet rely on having Python 2.5 or
> better so I have to stick to try...finally.

With with:

import sys

class leave_open(object):
    def __init__(self, obj):
        self.obj = obj
    def __enter__(self):
        return self.obj
    def __exit__(self, *exc_info):
        pass

def open_file(name, special={'-':sys.stdout, '2-':sys.stderr}):
    if name in special:
        return leave_open(special[name])
    else:
        return open(name, 'w')

def process_file(filename):
    with open_file(filename) as outfile:
        outfile.write("stuff happens")


Without with:

import sys

def open_file(name, special={'-':sys.stdout, '2-':sys.stderr}):
    if name in special:
        return False, special[name]
    return True, open(name, 'w')

def process_file(filename):
    should_close, outfile = open_file(filename)
    try:
        outfile.write('stuff happens')
    finally:
        if should_close:
            outfile.close()

--
Paul Hankin



From python.list at tim.thechases.com  Tue Oct  2 12:57:01 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 02 Oct 2007 11:57:01 -0500
Subject: access __doc__ from within function without reference to function
	name
In-Reply-To: <Xns99BDA81BBC0CDduncanbooth@127.0.0.1>
References: <1191331567.944636.263140@y42g2000hsy.googlegroups.com>	<mailman.1394.1191336049.2658.python-list@python.org>
	<Xns99BDA81BBC0CDduncanbooth@127.0.0.1>
Message-ID: <4702785D.7010107@tim.thechases.com>

> The original request was to do it without using the function's
> name, but you are depending on that name so your code is easy
> enough to break. e.g. change the definition of f1 to:
> 
>    def f2(func):
>      "this is f1"
>      s = func()
>      print s
>      return s
>    f1 = f2
>    del f2

Even Python-proper seems to get "confused" by this (though I 
would contend it's correct behavior):


===================================
   def f1():
	raise Exception
   f2 = f1
   del(f1)
   f2()
===================================


The traceback references f1() instead of f2. (other printing than 
the calling line of code from the python file itself)


===================================
Traceback (most recent call last):
   File "x.py", line 5, in ?
     f2()
   File "x.py", line 2, in f1
     raise Exception
Exception
===================================

pdb suffers the same problem:

===================================
   def f1():
	import pdb; pdb.set_trace()
	print 'hello'
   f2 = f1
   del(f1)
   f2()
===================================


then, when run, use "where" to ask where Python thinks you are:


===================================
 > c:\temp\z.py(3)f1()
-> print 'hello'
(Pdb) where
   c:\temp\z.py(7)?()
-> f2()
 > c:\temp\z.py(3)f1()
-> print 'hello'
===================================

It thinks we're in f1 as well even though f1 no longer exists.


My understanding was that the OP wanted a way to refrain from 
hard-coding the function-name into the body of the function, 
rather than to completely avoid the name of the function ever 
being used anywhere.

Unless there's a mapping that I couldn't find (that would take 
the current frame and map it to the calling 
function/method/module object) the only way to completely avoid 
this (AFAICT) would be to take the location information returned 
by the stack frame, parse the file, and extract the doc-string 
from the resulting line(s).

It gets hairier when the python is poorly written as one could 
have pessimal cases of "valid" python docstrings that look like

   def f(x): "docstring"; return x*2

or

   def f(x):
     "docstring"; return x*2

or common multiline items like

   def f(x):
     """docstring1
     docstring2"""
     pass

or even worse,

   def f(x):
     """this is a \"""docstring\"""
     with \\\"""and\""" mutliple lines"""
     pass

   def f(x):
     "this is\
     a docstring"
     pass

The parser also has to accomodate "raw" and "unicode" string 
prefixes, as they're valid too:

   def f(x):
     r"raw!"
     pass

   def f(x):
     u"Unicode"
     pass


in addition. Okay...in most of these cases, the pathological 
coder should be taken out back and beaten, but it's a non-trivial 
problem :)

-tkc






From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 14:41:43 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 17 Oct 2007 18:41:43 -0000
Subject: Stopping a fucntion from printing its output on screen
References: <1192633024.035476.262830@i38g2000prf.googlegroups.com>
Message-ID: <13hclr71h9ujr34@corp.supernews.com>

On Wed, 17 Oct 2007 07:57:04 -0700, sophie_newbie wrote:

> Hi, in my program i need to call a couple of functions that do some
> stuff but they always print their output on screen. But I don't want
> them to print anything on the screen. Is there any way I can disable it
> from doing this, like redirect the output to somewhere else? But later
> on in the program i then need to print other stuff so i'd need to
> re-enable printing too. Any ideas?


If it is your program, then just change your program to not print to the 
screen! Instead of writing a function like this:


def parrot():
    # This is bad practice!
    do_lots_of_calculations()
    print "This is a parrot"


write it like this:

def parrot():
    # This is good practice
    do_lots_of_calculations()
    return "This is a parrot"


What's the difference? In the first version, the function parrot() 
decides that its result is always printed. In the second version, YOU 
decide:


result = parrot()
# now pass the result to something else
do_more_calculations(result)
# or print it
print result


Otherwise, you can do something like this:

import cStringIO
import sys
capture_output = cStringIO.StringIO()
sys.stdout = capture_output
# call the function that always prints
parrot()
# now restore stdout
sys.stdout = sys.__stdout__


but that's a little risky, and I recommend against it unless you have no 
other choice.


-- 
Steven


From stargaming at gmail.com  Fri Oct 26 17:33:43 2007
From: stargaming at gmail.com (Stargaming)
Date: 26 Oct 2007 21:33:43 GMT
Subject: tuples within tuples
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
	<5oe73cFmh2htU1@mid.uni-berlin.de>
	<1193407191.002389.17680@v3g2000hsg.googlegroups.com>
	<13i48kmfbjstm53@corp.supernews.com>
	<1193428719.253120.207320@22g2000hsm.googlegroups.com>
	<mailman.486.1193430393.13605.python-list@python.org>
Message-ID: <47225d37$0$12186$9b622d9e@news.freenet.de>

On Fri, 26 Oct 2007 14:26:24 -0600, Michael L Torrie wrote:

> korovev76 at gmail.com wrote:
[snip]
>>>> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)
                                               ^
Syntax error behind ``'bobloblaw``.

>>>         "C" isn't a tuple in your example either. It is a one-element
>>>         list
>>> (the single element INSIDE the list is a tuple whose third element is
>>> a list containing a non-terminated string -- so the entire structure
>>> is invalid)
>>>
>>>
>> i'm not sure what u mean with "the entire structure is invalid"...
>> that's exactly what I got while parsing...
> 
> Your structure is correct.  Dennis just didn't read all the matching
> parens and brackets properly.

He certainly is -- *you* are misreading *him*. The nit he's picking is 
the non-terminated string (quotation mark/apostrophe missing).

Nit-picking'ly,
Stargaming


From akraemer at sbcglobal.net  Thu Oct 18 01:52:30 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Thu, 18 Oct 2007 05:52:30 -0000
Subject: Strange behaviour with reversed()
In-Reply-To: <13hdochic30oo43@corp.supernews.com>
References: <13hdochic30oo43@corp.supernews.com>
Message-ID: <1192686750.727045.169770@v23g2000prn.googlegroups.com>

On Oct 17, 9:31 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> I don't understand how reversed() is operating. I've read the description
> in the docs:
>
> reversed(seq)
> Return a reverse iterator. seq must be an object which supports the
> sequence protocol (the __len__() method and the __getitem__() method with
> integer arguments starting at 0). New in version 2.4.
>
> and help(reversed) but neither gives any insight to what happens when you
> use reversed() on a sequence, then modify the sequence.
>
> This works as I expected:
>
> >>> L = list("abc")
> >>> RL = reversed(L)
> >>> del L
> >>> list(RL)
>
> ['c', 'b', 'a']
>
> This suggests that reversed() makes a copy of the list:
>
> >>> L = list("abc")
> >>> RL = reversed(L)
> >>> L.append("d")
> >>> list(RL)
>
> ['c', 'b', 'a']
>
> This suggests that reversed() uses a reference to the original list:
>
> >>> RL = reversed(L)
> >>> L[0] = 'e'
> >>> list(RL)
>
> ['d', 'c', 'b', 'e']
>
> And these examples suggests that reversed() is confused, or at least
> confusing:
>
> >>> RL = reversed(L)
> >>> del L[2]
> >>> list(RL)
>
> []
>
> >>> L = list("abc")
> >>> RL = reversed(L)
> >>> L.insert(0, "d")
> >>> L
>
> ['d', 'a', 'b', 'c']>>> list(RL)
>
> ['b', 'a', 'd']
>
> Does anyone know what reversed() is actually doing?
>
> --
> Steven.

Without knowing the internals, it seems reversed() does exactly the
same as the following class:


class Reversed(object):
  def __init__(self,seq):
    self.seq = seq
    self.i = len(seq)
  def __iter__(self):
    return self
  def next(self):
    self.i -= 1
    if self.i < 0:
      raise StopIteration
    else:
      return self.seq[self.i]

so it doesn't copy anything, just book-keeping of indexes. I guess one
would call this kind of object a (special) "view" of the sequence.

Cheers,

Andreas



From tavares at fe.up.pt  Tue Oct  2 14:55:02 2007
From: tavares at fe.up.pt (tavares at fe.up.pt)
Date: Tue, 02 Oct 2007 11:55:02 -0700
Subject: WCCM8 & ECCOMAS 2008 - Mini-Symposium on Computational Bioimaging and
	Visualization - Announce & Call for Contributions
Message-ID: <1191351302.827938.302580@22g2000hsm.googlegroups.com>

___________________________________________________________

Mini-Symposium on

Computational Bioimaging and Visualization

Within the WCCM8 & ECCOMAS 2008 International Conference
(http://www.iacm-eccomascongress2008.org )
Venice, Italy, 30 June - 5 July 2008

___________________________________________________________


Dear Colleague,

The use of computational procedures based on medical images to model
and visualize represented objects requires a high level of research
investment, due mainly to the strong demands of clinical partners.
These procedures can have different goals, such as shape
reconstruction and visualization, segmentation, motion and deformation
analyses, registration, simulation, etc. The main goal of this Mini-
symposium is to promote the debate between researchers involved in the
related fields (Bio-medical Image Acquisition, Analysis and
Processing; Multi-scale Shape and Motion Reconstruction; Multi-scale
Modeling and Analysis; Scientific Visualization, Bio-medical Software
Libraries, Environments; etc.), in order to set the major lines of
developments for the near future.

Mini-symposium Organizers:

Jo?o Manuel R.S. Tavares (tavares at fe.up.pt, FEUP, Porto Portugal)
Renato Natal Jorge (rnatal at fe.up.pt, FEUP, Porto, Portugal)
Thomas J.R. Hughes (tjr_hughes at hotmail.com, ICES, University of Texas
at Austin, USA)
Chandrajit Bajaj (bajaj at cs.utexas.edu, ICES, University of Texas at
Austin, USA)

IMPORTANT DATES

Deadline for presenting a one page abstract: December 15th., 2007
Acceptance of the contributions: January 31th., 2008
Deadline for submitting the final abstract: February 28th., 2008



From steven.bethard at gmail.com  Fri Oct 19 12:10:27 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 19 Oct 2007 10:10:27 -0600
Subject: vote for Python - PLEASE
In-Reply-To: <mailman.193.1192751640.13605.python-list@python.org>
References: <mailman.193.1192751640.13605.python-list@python.org>
Message-ID: <DvydnUJXTuJpS4XanZ2dnUVZ_g2dnZ2d@comcast.com>

Monty Taylor wrote:
> MySQL has put up a poll on http://dev.mysql.com asking what your primary 
> programming language is. Even if you don't use MySQL - please go stick 
> in a vote for Python.

I agree with others that voting here if you don't use MySQL is *not* a 
good idea. That said, I still appreciate the notice - I have used MySQL 
occasionally, and I've *always* used the Python bindings. But I don't 
pay any attention to the MySQL homepage, so I never would have known 
about the poll.

Next time, simply posting the URL and letting us know that it's targeted 
at people using MySQL should be sufficient.

STeVe


From mdipierro at cti.depaul.edu  Sat Oct 13 12:10:15 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Sat, 13 Oct 2007 11:10:15 -0500
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <07D3B93C-2A6D-4651-816D-C1A432BA5146@cti.depaul.edu>
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
	<fbe2e2100710130301q45de068mab9e32b1e6eccf8a@mail.gmail.com>
	<07D3B93C-2A6D-4651-816D-C1A432BA5146@cti.depaul.edu>
Message-ID: <3F50B94B-73E0-47B2-900E-026C48CBABDE@cti.depaul.edu>

... I almost forgot ...

another difference between Gluon and Django,TG is that in Gluon if  
you write controllers without view you automatically get generic view  
that render and BEAUTIFY() the variables returned by the controllers.  
That means you can develop the logic of your application without  
writing one line of HTML and you have a working prototype.

Massimo

On Oct 13, 2007, at 10:44 AM, DiPierro, Massimo wrote:

> Hi Daniel,
>
> in many respects Gluon is similar to Django and was greatly inspired
> by Django. Some differences are:
>
> Gluon is easier to install - you never need to use the shell, there
> are no configuration files.
>
> Gluon is a web app. You can do all development via a web interface.
>
> You can compile Gluon apps and distribute them in byte-code compiled
> form.
>
> Each Gluon app comes with a ticketing system. If an error occurrs it
> is logged and a ticket is issed. you can then search and retrieve
> errors by date or client-ip.
>
> Making forms is easier than in Django. For example given a db table
> called db.table you can do:
>    form=SQLForm(db.table)
>    if form.accepts(request.vars,session): pass
> these two lines will do everything, including generating the form
> from the table, validating input, inserting in database or modifying
> the form with error messages. This also prevents multiple submission
> of the same form because each form has a unique one-time key.
>
> The template language is pure python but without indentation
> requirements. Django has restrictions on what can go in templates.
>
> The output in the views is escaped by default. In Django it is not.
>
> You can manage internationalization (add language and write
> translations)  from the web interface.
>
> Each app has an automatically generated database administrative
> interface. The Django one is cooler then Gluon's, but the Gluon one
> allows complicated joins in the filter field.
>
> Gluon supports migrations: you just change the definition of a table
> and it ALTERs the table accordingly (drop works in postgres only).
> For example if you change a field from boolean to string, the
> database is altered and the values are converted from boolean to
> string for existing records.
>
> Gluon has a sql.log console to see what changes are made to the
> database.
>
> In Gluon you do not need to import modules. The gluon modules you
> need already imported for you.
>
> Gluon has a top-down design. This means that the Gluon APIs are not
> under development. They are 100% stable. There may be bugs and they
> will be fixed but the syntax and signature of functions is not
> subject to change. This is why I started making Gluon, I am teaching
> a class on web frameworks and the API of Django and TG are not as
> stable as I wish they were. Moreover they have a too steep learning
> curve when compared to Gluon.
>
> Please try it, it is no that time consuming, and send me you comments
> (good or bad)!
>
> Massimo
>
>
> On Oct 13, 2007, at 5:01 AM, Daniel Fetchinson wrote:
>
>>> Hello everybody,
>>>
>>> I just joined this mailing list. Thanks for your comments about
>>> gluon.
>>>
>>> I have posted a short video about it and I am planning to make more
>>> over the week-end.
>>>
>>> http://www.youtube.com/watch?v=VBjja6N6IYk
>>>
>>> About some of your comments:
>>> - the most complex modules (like html and sql ones) have doctests.
>>> - the executable versions (win and mac) come with python2.5. Running
>>> from source code does not require 2.5 but you probably want sqlite3.
>>> - so far I support sqlite3 and postgresql, not mysql (just because I
>>> do not use it and had no time for testing it).
>>> - yes, there are typos in the documentation. Please point them  
>>> out to
>>> me so that I can fix them.
>>> - I am sure there are some minor bugs I am not aware of but as far I
>>> tested, it work.
>>> - If you report bugs to me I promise to fix them in 48hrs.
>>> - please make sure you have the latest version.
>>>
>>> I very much appreciate comments about gluon (good and bad). Please
>>> send me more so that I can improve it.
>>>
>>> There will be two talks in chicago about gluon next week: at DePaul
>>> Linux Users Group on Thursday evening and at the Chicago Linux Users
>>> Group on Saturday afternoon. I will try record them and post them.
>>>
>>> Massimo
>>>
>>> P.S. Michele Simionato. I have heard your name before? Is it  
>>> possible
>>> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
>>> and there is not many of us.
>>
>>
>> Hi Massimo,
>>
>> In what way is gluon different from existing frameworks most notably
>> django and turbogears? What do you think are the advantages to using
>> gluon over these two?
>>
>> Cheers,
>> Daniel
>> --
>> http://mail.python.org/mailman/listinfo/python-list
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From arkanes at gmail.com  Thu Oct  4 14:35:09 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 4 Oct 2007 13:35:09 -0500
Subject: Starting a thread before wxPython bootup ... interesting.
In-Reply-To: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
References: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
Message-ID: <4866bea60710041135i60606e45ne10fedbd09e7d938@mail.gmail.com>

On 10/4/07, Shafik <shafik23 at gmail.com> wrote:
> Hello folks,
>
> I'm having an issue with mixing wxPython and threading ... I realize
> multi-threading always introduces subtle bugs, but the following
> scenario is just odd:
>
> I start a dummy thread, that does nothing but increment a counter and
> print its value to the screen, then afterwards, I start the wxPython
> application. I get nothing but weird behavior: sometimes the gui just
> crashes, sometimes I get an exception, sometimes it runs for a little
> but very slowly ...
>
> Anyone know whats going on? I have a dual-core T5500, so multi
> threading is piece of cake for it hardware -wise.
>

That's quite a broad and poorly specified problem to ask people to
solve with no code. You get double minus points for mentioning an
exception without saying what it was.

Below is a script that has no demonstrable problems on my machine:

import wx
import threading

if __name__ == '__main__':
    run = True
    def count():
        counter = 0
        while run:
            print counter
            counter += 1
    thread = threading.Thread(target=count)
    thread.start()
    app = wx.App(False)
    f = wx.Frame(None)
    f.Show()
    app.MainLoop()
    run = False



Since the counter loop spins tightly, this causes some CPU contention
and could quite possibly cause a non-trivial GUI to respond poorly,
but that's to be expected.


From paul.melis at gmail.com  Wed Oct 17 09:41:46 2007
From: paul.melis at gmail.com (Paul Melis)
Date: Wed, 17 Oct 2007 06:41:46 -0700
Subject: Static variable vs Class variable
In-Reply-To: <5nmggtFiva37U3@mid.uni-berlin.de>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
	<5nmcuhFiva37U2@mid.uni-berlin.de>
	<Xns99CC8AF5E7617duncanbooth@127.0.0.1>
	<1192625870.815418.226970@e34g2000pro.googlegroups.com>
	<5nmggtFiva37U3@mid.uni-berlin.de>
Message-ID: <1192628506.149205.64040@z24g2000prh.googlegroups.com>

On Oct 17, 3:20 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Wed, 17 Oct 2007 05:57:50 -0700, Paul Melis wrote:
> > On Oct 17, 2:39 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> >> >>> class C(object):
>
> >>         def setx(self, value):
> >>                 if len(value)>2:
> >>                         raise ValueError
> >>                 self._x = value
> >>         def getx(self):
> >>                 return self._x
> >>         x = property(getx, setx)
>
> >> >>> o = C()
> >> >>> o.x = []
> >> >>> o.x += ['a']
> >> >>> o.x += ['b']
> >> >>> o.x += ['c']
>
> >> Traceback (most recent call last):
> >>   File "<pyshell#27>", line 1, in <module>
> >>     o.x += ['c']
> >>   File "<pyshell#22>", line 4, in setx
> >>     raise ValueError
> >> ValueError
>
> >> >>> o.x
> >> ['a', 'b', 'c']
>
> > Now that's really interesting. I added a print "before" and print
> > "after" statement just before and after the self._x = value and these
> > *do not get called* after the exception is raised when the third
> > element is added.
>
> Well, of course not.  Did you really expect that!?  Why?

Because o.x *is* updated, i.e. the net result of self._x = value is
executed.

Paul



From carsten at uniqsys.com  Wed Oct 17 16:41:11 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 17 Oct 2007 16:41:11 -0400
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
Message-ID: <1192653671.10116.39.camel@dot.uniqsys.com>

On Wed, 2007-10-17 at 20:27 +0000, Debajit Adhikary wrote:
> I have two lists:
> 
> a = [1, 2, 3]
> b = [4, 5, 6]
> 
> What I'd like to do is append all of the elements of b at the end of
> a, so that a looks like:
> 
> a = [1, 2, 3, 4, 5, 6]
> 
> I can do this using
> 
> map(a.append, b)
> 
> How do I do this using a list comprehension?

You don't.

> (In general, is using a list comprehension preferable (or more
> "pythonic") as opposed to using map / filter etc.?)

In general, a list comprehension is more Pythonic nowadays, but in your
particular case the answer is neither map nor a list comprehension, it's
this:

a += b

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From sgeiger at ncee.net  Fri Oct 26 15:01:33 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Fri, 26 Oct 2007 14:01:33 -0500
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <13i3lg8k3j64s7b@corp.supernews.com>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>	<87fxzyjkr1.fsf@benfinney.id.au>
	<13i3lg8k3j64s7b@corp.supernews.com>
Message-ID: <4722398D.7070903@ncee.net>


D = lambda x: decimal.Decimal(str(x))

>> D(3.2)
Decimal("3.2")



Steven D'Aprano wrote:
> On Fri, 26 Oct 2007 19:19:46 +1000, Ben Finney wrote:
>
>   
>>> Of course we can intruduce a single character function name as an alias
>>> for the Decimal type constructor, but even then we have to use both
>>> parentheses and quotes for each and every decimal constant. We cannot
>>> make it shorter than D("12.34")
>>>       
>> Nor should we. A function or type name should be short but explicit, and
>> 'Decimal' is about as short as I'd want.
>>     
>
> You don't like str, int, float, list, set, dict, or bool?
>
> Or for that matter, enum
> http://www.python.org/dev/peps/pep-0354/
>
> *wink*
>
>
>   


-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

-------------- next part --------------
A non-text attachment was scrubbed...
Name: sgeiger.vcf
Type: text/x-vcard
Size: 288 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071026/d11cdd62/attachment.vcf>

From usenet at nicko.org  Fri Oct 26 07:00:35 2007
From: usenet at nicko.org (Nicko)
Date: Fri, 26 Oct 2007 04:00:35 -0700
Subject: Iteration for Factorials
In-Reply-To: <7xodeouga8.fsf@ruckus.brouhaha.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<7xodeouga8.fsf@ruckus.brouhaha.com>
Message-ID: <1193396435.916666.277770@50g2000hsm.googlegroups.com>

On Oct 25, 2:36 am, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
> Lou Pecora <pec... at anvil.nrl.navy.mil> writes:
> > There might even be an array method that can be adapted to get the
> > product.  Is there a product method? (analogous to a sum method)
>
> The "reduce" function which is being removed from python in 3.0.
>
> import operator
> def factorial(n):
>   return reduce(operator.mul, xrange(1,n+1))

Since reduce is being removed, and Guido is known not to like its use
anyway, I propose the following code for Py2.5 and later:

    import math
    def fact(n):
        return math.exp(sum((math.log(i) for i in range(1,n+1)))) if n
>= 0 else None

If you don't like the rounding errors you could try:

    def fact(n):
        d = {"p":1L}
        def f(i): d["p"] *= i
        map(f, range(1,n+1))
        return d["p"]

It is left as an exercise to the reader as to why this code will not
work on Py3K

Nicko




From cakebread at gmail.com  Fri Oct 12 23:19:02 2007
From: cakebread at gmail.com (cakebread)
Date: Sat, 13 Oct 2007 03:19:02 -0000
Subject: ElementTree find with xmlns
Message-ID: <1192245542.394991.139770@i13g2000prf.googlegroups.com>

I'm having problems parsing a file:

>>> tree = ElementTree.fromstring("""<html xmlns="http://www.w3.org/1999/xhtml" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:doap="http://usefulinc.com/ns/doap#">
<body>Hello world</body>
</html>""")

>>> print tree.find('body')
None

The above works fine with the first element being a simple <html>, but
not when I have all the xmlns's.

Thanks,
Rob



From _karlo_ at _mosor.net  Thu Oct  4 16:59:57 2007
From: _karlo_ at _mosor.net (Karlo Lozovina)
Date: Thu, 04 Oct 2007 22:59:57 +0200
Subject: Dynamically creating class properties
Message-ID: <fe3jv0$lnc$1@news1.carnet.hr>

Hi all,

this is my problem: lets say I have a arbitrary long list of attributes 
that I want to attach to some class, for example:

     l = ['item1', 'item2', 'item3']

Using metaclasses I managed to create a class with those three 
attributes just fine. But now I need those attributes to be properties, 
so for example if 'A' is my constructed class, and 'a' an instance of 
that class:

    a = A()

Now if I write:

    a.item1 = 'something'
    print a.item1

I want it to be actually:

    a.setitem1('something')
    print a.getitem1

Any idea how to do that with metaclasses and arbitrary long list of 
attributes? I just started working with them, and it's driving me nuts :).

Thanks for the help,
best regards.

-- 
Karlo Lozovina -- Mosor


From robert.kern at gmail.com  Wed Oct  3 14:06:25 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 03 Oct 2007 13:06:25 -0500
Subject: module confusion
In-Reply-To: <fdvpu1$ejq$2@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz>
Message-ID: <fe0ln2$soa$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.1404.1191345163.2658.python-list at python.org>, Robert
> Kern wrote:
> 
>> Lawrence D'Oliveiro wrote:
>>
>>> In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
>>> Kern wrote:
>>>
>>>> Not all of the modules in a package are imported by importing the
>>>> top-level package.
>>> You can't import packages, only modules.
>>>
>>>> os.path is a particularly weird case because it is just an alias to the
>>>> platform-specific path-handling module; os is not a package.
>>> os is a module, os.path is a variable within that module. That's all
>>> there is to it.
>> Yes, but os.path is also module. That's why I said it was a weird case.
> 
> You can't have modules within modules. os.path isn't an exception--see
> below.
> 
>> In [1]: import os
>>
>> In [2]: type(os.path)
>> Out[2]: <type 'module'>
> 
> On my Gentoo system:
> 
>     >>> import os
>     >>> os.path
>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
> 
> It's just a variable that happens to point to the posixpath module.

I believe that is precisely what I was saying.

-- 
Robert Kern

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



From deets at nospam.web.de  Tue Oct 23 13:20:57 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 23 Oct 2007 19:20:57 +0200
Subject: Life-time of temporary variables in list comprehensions
In-Reply-To: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
References: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
Message-ID: <5o6os6Fl1g4vU1@mid.uni-berlin.de>

beginner schrieb:
> Hi All,
> 
> If I have a list comprehension:
> 
> ab=["A","B"]
> c = "ABC"
> [1.0 if c=='A' else c='B' for c in ab]
> print c
> 
>>> "B"
> 
> My test shows that if c is not defined before the list comprehension,
> it will be created in the list comprehension; if it is defined before
> the list comprehension, the value will be overwritten. In other words,
> temp variables are not local to list comprehensions.
> 
> My question is why is this and is there any way to make c local to
> list comp?


Unfortunately, not as such. They do leak their variable names.

But what you can do ist to create generator expressions (which don't 
leak) and put a list around them:

list(1.0 if c == 'A' else c="B" for c in ab)

See also

http://www.python.org/dev/peps/pep-0289/

Diez


From grflanagan at yahoo.co.uk  Wed Oct 17 10:29:14 2007
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: Wed, 17 Oct 2007 07:29:14 -0700
Subject: Can you determine the sign of the polar form of a complex number?
In-Reply-To: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
Message-ID: <1192631354.837722.28250@e34g2000pro.googlegroups.com>

On Oct 17, 3:17 pm, schaefer... at gmail.com wrote:
> To compute the absolute value of a negative base raised to a
> fractional exponent such as:
>
> z = (-3)^4.5
>
> you can compute the real and imaginary parts and then convert to the
> polar form to get the correct value:
>
> real_part = ( 3^-4.5 ) * cos( -4.5 * pi )
> imag_part = ( 3^-4.5 ) * sin( -4.5 * pi )
>
> |z| = sqrt( real_part^2 + imag_part^2 )
>
> Is there any way to determine the correct sign of z, or perform this
> calculation in another way that allows you to get the correct value of
> z expressed without imaginary parts?
>


Your question is not clear. (There is a cmath module if that helps).

>>> z1 = complex(-3)**4.5
>>> z1
(7.7313381458154376e-014+140.29611541307906j)
>>> import cmath
>>> z2 = cmath.exp(4.5 * cmath.log(-3))
>>> z2
(7.7313381458154401e-014+140.29611541307909j)
>>>

Gerard



From enleverlesX.XmcX at XmclaveauX.com  Mon Oct 22 11:01:49 2007
From: enleverlesX.XmcX at XmclaveauX.com (=?Utf-8?Q?M=C3=A9ta-MCI_=28MVP=29?=)
Date: Mon, 22 Oct 2007 17:01:49 +0200
Subject: python 2.5 scripting in vim on windows: subprocess problem
In-Reply-To: <mailman.311.1193042882.13605.python-list@python.org>
References: <mailman.311.1193042882.13605.python-list@python.org>
Message-ID: <471cbcc2$0$5068$ba4acef3@news.orange.fr>

Hi!

VIM can, also, to be OLE-COM-server.

Try with: 
  from win32com.client.dynamic import Dispatch
  vim = Dispatch('Vim.Application')

(+google)

@-salutations

Michel Claveau




From deets at nospam.web.de  Wed Oct 17 12:07:52 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 18:07:52 +0200
Subject: pymssql - insert NULL to int
References: <1192636146.759372.33660@v29g2000prd.googlegroups.com>
Message-ID: <5nmqaoFioriqU1@mid.uni-berlin.de>

rc wrote:

> How to insert NULL values in to int field using params.
> 
> I'm trying to use pymssql.execute, passing the operation and list of
> params.  One of the values in the params is a NULL value going to int
> field.  The pymssql._quote() puts ' around the NULL which causes an
> exception to be thrown, is there a way to use the params for this or
> do I need to build the insert string myself?
> 
> pymssql.DatabaseError: internal error: SQL Server message 245,
> severity 16, state 1, line 1:
> Conversion failed when converting the varchar value 'NULL' to data
> type int.
> DB-Lib error message 10007, severity 5:
> General SQL Server error: Check messages from the SQL Server.

Can you show us the actual code you use? I doubt that such a basic thing
isn't working.

You are aware that you have to pass None, not "NULL"?

Diez


From zaxfuuq at invalid.net  Tue Oct  9 01:00:27 2007
From: zaxfuuq at invalid.net (Wade Ward)
Date: Mon, 8 Oct 2007 22:00:27 -0700
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
	<13glppu3hknk597@corp.supernews.com>
Message-ID: <D_ednahCQttIYZfanZ2dnUVZ_j-dnZ2d@comcast.com>




"Damien Kick" <dkixk at earthlink.net> wrote in message 
news:13glppu3hknk597 at corp.supernews.com...

> This thread of conversation also popped into my head when I was waiting in 
> line at the Starbucks in the building in which I work.  I've been ordering 
> a lot of Americanos lately.  I always ask for a small Americano and the 
> person taking my order always calls out my drink as a "tall". With respect 
> to Starbucks, calling a beverage which comes in the shortest cup used in 
> the store a "tall" has a perfectly well defined meaning.  But that doesn't 
> make it any less ridiculous.  Of course, it was mentioned elsewhere in 
> this thread that context is important.  And it is.  To use the Starbucks 
> analogy, for someone to criticize Starbucks because their tall drinks 
> really are actually quite short would be ignoring the significance of the 
> context of Starbucks' abuse of the English language.  But, again, that 
> doesn't make Starbuck's use of the word any less ridiculous.  However, at 
> least at Starbucks, when I use the "wrong" word, they don't start 
> lecturing me.  They know what I mean and simply go ahead and translate it 
> to Starbucks newspeak.

I, as a tall Americano, have always taken ordering the smallest espresso 
beverage possible as something describing the preference of the orderer, as 
opposed to the beverage itself.

-- 
wade ward
"Your boyfriend is not my boyfriend, doll."




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct 26 03:02:37 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 26 Oct 2007 09:02:37 +0200
Subject: about functions question
In-Reply-To: <slrnfi1b8f.16s.horpner@FIAD06.norwich.edu>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
	<1193314722.985517.252220@d55g2000hsg.googlegroups.com>
	<47209ba3$0$4804$426a74cc@news.free.fr>
	<slrnfi1b8f.16s.horpner@FIAD06.norwich.edu>
Message-ID: <47219101$0$8042$426a74cc@news.free.fr>

Neil Cerutti a ?crit :
> On 2007-10-25, Bruno Desthuilliers
> <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
>> The canonical case for small scripts is to have first all
>> functions and globals defined, then the main code protected by
>> a guard, ie:
> 
> There's no reason to "protect" your main code in a small script.

I actually have at least one: it allow me to execute all the top-level 
definitions in Emacs' Python sub-interpreter buffer for testing, without 
  actually executing the 'main' code.

>> if __name__ == '__main__':
>>    print SOME_CONST
>>    if not do_something():
>>      try_somethin_else()
> 
> That idiom is 

<insert>also</insert>

> useful in modules for launching tests or examples
> that should not be run when the module is imported.
> 
Indeed.


From besturk at gmail.com  Thu Oct 18 10:23:19 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 07:23:19 -0700
Subject: Convert string to command..
Message-ID: <1192717399.296654.270350@k35g2000prh.googlegroups.com>

I want to convert a string to command..
For example i have a string:
a="['1']"
I want to do this list..
How can i do ?



From http  Tue Oct 23 00:54:54 2007
From: http (Paul Rubin)
Date: 22 Oct 2007 21:54:54 -0700
Subject: Check File Change Every 10 Seconds
References: <27459.1491478079$1193048158@news.gmane.org>
	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
	<mailman.326.1193064368.13605.python-list@python.org>
Message-ID: <7xr6jm77mp.fsf@ruckus.brouhaha.com>

"Robert Rawlins - Think Blue" <robert.rawlins at thinkbluemedia.co.uk> writes:
> That certainly looks to be the type of thing that I'm looking to
> achieve, however, I forgot to mention I'm running this on a Linux
> platform and not a Win32 one :-( Sorry.

If it's just one file, then yes, stat it in a loop with os.sleep.

If you want to do something fancier like watch the appearance and
disappearance of files in a directory, use the inotify system:

http://pyinotify.sourceforge.net/


From peterbe at gmail.com  Mon Oct 15 12:35:06 2007
From: peterbe at gmail.com (Peter Bengtsson)
Date: Mon, 15 Oct 2007 16:35:06 -0000
Subject: Setting a timeout for a cookie
In-Reply-To: <1192460963.317397.213010@e9g2000prf.googlegroups.com>
References: <1192460963.317397.213010@e9g2000prf.googlegroups.com>
Message-ID: <1192466106.160978.28400@i38g2000prf.googlegroups.com>

On Oct 15, 4:09 pm, sophie_newbie <paulgeele... at gmail.com> wrote:
> Hi,
>
> I'm wondering how do you set a 'timeout' or expiry date/time for a
> cookie set using a python cgi script. I can set a cookie ok but I
> dunno how to set the expiry time so it always expires at the end of
> the session.
>

Easy, you don't. It's only if you set a timeout (aka. expires
parameter) that it will last longer than the session.
Just don't set it and it'll last till the browser is shut down.



From kay.schluehr at gmx.net  Fri Oct  5 12:09:50 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 05 Oct 2007 09:09:50 -0700
Subject: unit testing
In-Reply-To: <1191593565.971012.212920@22g2000hsm.googlegroups.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1571.1191577093.2658.python-list@python.org>
	<1191593565.971012.212920@22g2000hsm.googlegroups.com>
Message-ID: <1191600590.041859.154790@22g2000hsm.googlegroups.com>

On Oct 5, 4:12 pm, byte8b... at gmail.com wrote:
> On Oct 5, 5:38 am, Craig Howard <craig.how... at earthlink.net> wrote:
>
> > Brad:
>
> > If the program is more than 100 lines or is a critical system, I
> > write a unit test. I hate asking myself, "Did I break something?"
> > every time I decide to refactor a small section of code. For
> > instance, I wrote an alarm system in Python for a water treatment
> > plant. If the chlorine, pH, or turbidity are out of spec, an email
> > message is sent to the plant operator's pager. Because of the nature
> > of the alarm system, extensive field testing was out of the question.
> > Unit testing was the only way to ensure it worked without disrupting
> > the plant operation.
>
> > Craig
>
> Thanks to all for the opinions. Just to clarify, I have nothing
> against testing. I like doing it. I catch a lot of bugs! I dislike the
> formality of the unittest module. It's unyielding. It makes testing
> difficult unless your code is written with testing in mind from the
> start.
>
> I maintain old code... code written a long time ago, before unittest
> was popular. Getting unittest to work on that is difficult at best. So
> we do informal testing ourselfs. The end result is the same... bugs
> are squashed before the code is placed into production. Many times, we
> find bugs as soon as we write a test!
>
> Thanks again for the advice.
>
> Brad

Just one recommendation. I don't know your project and remote
diagnostics is usually more funny than usefull, but there is a body of
literature about dealing with legacy code, for example:

http://www.amazon.com/Working-Effectively-Legacy-Robert-Martin/dp/0131177052

Of course Micheal Feathers talks constantly about putting systems
under test, exposing code for testability and lots more that goes
beyond code & fix.

Here is some article of the same author:

http://www.objectmentor.com/resources/articles/WorkingEffectivelyWithLegacyCode.pdf

Kay



From gagsl-py2 at yahoo.com.ar  Wed Oct 24 01:34:39 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 24 Oct 2007 02:34:39 -0300
Subject: escape single and double quotes
References: <721250.75471.qm@web55313.mail.re4.yahoo.com>
Message-ID: <op.t0osf1rox6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 23 Oct 2007 20:50:55 -0300, Michael Pelz Sherman  
<mpelzsherman at yahoo.com> escribi?:

> Leif B. Kristensen wrote:
>
>>>>  SQL = 'INSERT into TEMP data = %s'
>>>>  c.execute(SQL, """ text containing ' and ` and all other stuff we
>>> .  might
>>> .   read from the network""")
>>
>>> Sure, but does this work if you need more than one placeholder?
>
>> Yes it works with more than one placeholder.
>
> Yes, BUT: I have found that all of the placeholders must be STRINGS!
>
> If I try to use other data types (%d, %f, etc.), I get an error:
>
> File "/usr/lib/python2.5/site-packages/MySQLdb/cursors.py", line 149, in  
> execute
>     query = query % db.literal(args)
> TypeError: float argument required
>
> It's not a huge problem to convert my non-string args, but it
> seems like this should be fixed if it's a bug, no?

No. The *MARK* is always %s - but the data may be any type (suitable for  
the database column, of course).
The only purpose of %s is to say "insert parameter here". Other adapters  
use a question mark ? as a parameter placeholder, a lot less confusing, as  
it does not look like string interpolation.

-- 
Gabriel Genellina



From nksmith06 at cs.earlham.edu  Tue Oct  9 11:28:05 2007
From: nksmith06 at cs.earlham.edu (Nathaniel Smith)
Date: Tue, 9 Oct 2007 11:28:05 -0400
Subject: Query
Message-ID: <a6e7030d0710090828l27c424b6r1137ab4e509566bd@mail.gmail.com>

> I want to make a binary file , which would execute on it's own.

First do
$ which python
to get the location of your python binary. The default, i think, is just
/usr/bin/python.

Then add this line to the top of your file:
#!/usr/bin/python          (or whatever the `which` command returned)

then finally do this command:
$ chmod +x <file>.py

This makes <file> executable ( that's what the x stands for ).

now run it with:
$ ./<file>.py

you can also trim the .py from the file and it will work just the same.

To have your script work like installed binaries, put it in a folder in your
PATH variable. For example, if you added the path /home/<you>/bin/ to your
path variable ( PATH=$PATH:/home/<you>/bin/ ) Bash would search that
directory when you typed in a command to execute. What this means is if you
rename your <file>.py to just <file> and stick it in /home/<you>/bin/ you
could just do

$ <file>

at any time to run your program.

hope my verbosity is helpful.

-- 
-Nate
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/34678548/attachment.html>

From panguohualove at sina.com  Wed Oct 10 11:09:03 2007
From: panguohualove at sina.com (panguohua)
Date: Wed, 10 Oct 2007 08:09:03 -0700
Subject: a good website for softwares,movies and music etc.
Message-ID: <1192028943.905468.299990@y42g2000hsy.googlegroups.com>

www.space666.com


a good website for softwares,movies and music,sex etc.



From jjl at pobox.com  Thu Oct 11 14:31:17 2007
From: jjl at pobox.com (John J. Lee)
Date: Thu, 11 Oct 2007 18:31:17 GMT
Subject: How do I make urllib2 preserve case in HTTP header names?
References: <1192031537.620718.114690@22g2000hsm.googlegroups.com>
Message-ID: <871wc18pvu.fsf@pobox.com>

tepples at spamcop.net writes:

> The HTTP specification, RFC 2616, states that field names in HTTP
> headers are case insensitive.  But I'm trying to use Python 2.5.1's
> urllib2 to interact with a web service offered by Amazon.com, which
> deviates from the HTTP spec in that it requires use of case-sensitive
> header names ReportName, ReportID, and NumberOfReports.  I try to send
> an HTTP header named "NumberOfReports", but it comes out mangled as
> "Numberofreports'.  What is the best way to use Python 2.5.1 on
> Windows Server 2003 to create HTTP or HTTPS requests that do not
> mangle the case of header field names?

httplib


John


From nick.bastin at gmail.com  Mon Oct 22 01:33:01 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Mon, 22 Oct 2007 01:33:01 -0400
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<471BBD55.9030601@v.loewis.de>
	<496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
Message-ID: <66d0a6e10710212233q405b7798o46c1a9b4f8014327@mail.gmail.com>

On 10/21/07, Robert Dailey <rcdailey at gmail.com> wrote:
> On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
> > No, I literally meant that the Python C API is object-oriented.
> > You don't need an object-oriented language to write object-oriented
> > code.
>
> I disagree with this statement. C is not an object oriented language,
> and I've seen attempts to make it somewhat object oriented, however it
> failed miserably in readability and manageability overhead. However,
> this isn't the place to discuss such a thing so I've got nothing more
> to say than that.

Object-oriented programming is a design choice, not a language
feature.  You can write straight procedural code in C++, and you can
write object oriented code in C.  Sure, C++ has some language features
which facilitate object-oriented programming, but it doesn't magically
make your code object-oriented.  You can certainly write basic
object-oriented code in C and hide most of the implementation in
preprocessor macros if you so desire.

--
Nick


From kw at codebykevin.com  Wed Oct 31 11:36:18 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Wed, 31 Oct 2007 11:36:18 -0400
Subject: why did these companies choose Tcl over Python
In-Reply-To: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <4728A0F2.8030502@codebykevin.com>

chewie54 wrote:
> Hello,
> 
> As an electronics engineer I use some very expensive EDA CAD tool
> programs that are scriptable using Tcl.  I was wondering why these
> companies have choose to use Tcl instead of Python.   Some of these
> are:
> 
>    Mentor Graphics ModelTech VHDL and Verilog simulator
>    Synopsys  Design Compiler and Primetime Static Timing Analyzer
>    Actel FPGA tools.
> 
> Tcl seems to very popular in my business as the scripting language of
> choice.
> 
> I'm in the process of deciding to use Tcl or Python for a CAD tool
> program that I have been working on.    Most of the core of the
> program,  the database,   will be done is C as an extension to either
> Tcl or Python,   but I intend to use Tk or wxPthon for the GUI.   I do
> need publishing quality outputs from drawings done on a graphics
> device that are scaled to standard printer paper sizes.
> 
> 
> I would prefer to use Python but can't deny how popular Tcl is,  as
> mentioned above,  so my question is why wasn't Python selected by
> these companies as the choice of scripting languages for their
> product?
> 
> Are there any obvious advantages like:
> 
>     performance,
>     memory footprint,
>     better cross-platform support,
>     ease of use,
> 
> 
> Thanks in advance for your thoughts about this.
> 

One of the reasons Tcl has stayed around for so long is that it has 
found several niche's/domains where it has proven extremely useful. 
VDHL/Verilog is one of these areas: Tcl became the preferred solution 
for embedding and scripting, and has proven hard to dislodge. Network 
automation/scripting (via Tcl's Expect solution) is another problem 
domain where Tcl is widely used. GUI programming (with Tk) is yet another.

Developers tend to forget about Tcl as a viable programming language, 
and one of the reasons is that the problem domains where it has gained 
traction tend to be highly specialized.

I do GUI programming in Tk with both Python and Tcl. Doing sophisticated 
GUI's in Tk tends to be harder in Python than Tcl, because some of the 
current, modern Tk GUI libraries haven't been wrapped via Python. 
Understanding Tcl helps because I can drop into Tcl to customize a Tk 
widget as needed, then call the customized bits from Python.

In terms of suitability as a general purpose programming language, 
Python's biggest advantage over Tcl is the size of its standard library 
(Tcl is much smaller at its core, by design), its more singular approach 
to object-oriented programming if you use that method (Tcl has several 
different OO systems), and the size of its community--the larger number 
of Python programmers out there make it much more likely that you will 
find an open-source solution for your needs. Tcl's community is much 
smaller, its development moves more slowly, and Tcl does not compete in 
several major "hot" areas of development (no web frameworks like Django 
or Ruby on Rails).

Hope this helps,
Kevin

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From ldo at geek-central.gen.new_zealand  Thu Oct  4 04:06:15 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 21:06:15 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<47041303$0$13930$fa0fcedb@news.zen.co.uk>
	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>
Message-ID: <fe26tn$vs0$5@lust.ihug.co.nz>

In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>, George Neuner
wrote:

> The Christian Bible says "In the beginning was the Word..."

Which is an English mistranslation from the Greek "logos".


From exarkun at divmod.com  Wed Oct 31 11:47:19 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 31 Oct 2007 10:47:19 -0500
Subject: Python bug tracker now secret?
In-Reply-To: <47289e6e$0$14147$742ec2ed@news.sonic.net>
Message-ID: <20071031154719.8162.823696461.divmod.quotient.30144@ohm>

On Wed, 31 Oct 2007 08:26:06 -0700, John Nagle <nagle at animats.com> wrote:
>Jean-Paul Calderone wrote:
>> On Wed, 31 Oct 2007 07:53:01 -0700, John Nagle <nagle at animats.com> wrote:
>>> I'm now getting messages like this from the Python bug tracker on
>>> SourceForge:
>>>
>>>  Artifact: This Artifact Has Been Made Private. Only Group Members Can
>>>  View  Private ArtifactTypes.
>>>
>>> I'm being denied access to bug reports I submitted, such as
>>>
>>> https://sourceforge.net/tracker/?func=detail&aid=1651995&group_id=5470&atid=105470
>>>
>>>
>>> This is only happening for Python bugs; bugs in non-Python areas are
>>> still
>>> accessable.  So it's not a general SourceForge bug.
>>>
>>> Is this a dumb policy change or a dumb administrator action?
>>>
>>
>> I don't know why they chose to make the sf tracker private.  Maybe that
>> was the only way to remove write access.  Python bugs are now tracked
>> at http://bugs.python.org/.
>>
>> Jean-Paul
>
>     There are bug reports in the SourceForge tracker that aren't in the
>"bugs.python.org" tracker, so that move was botched.
>

You should probably send a message to python-dev about that.

Jean-Paul


From mpelzsherman at yahoo.com  Tue Oct 23 19:46:30 2007
From: mpelzsherman at yahoo.com (Michael Pelz Sherman)
Date: Tue, 23 Oct 2007 16:46:30 -0700 (PDT)
Subject: escape single and double quotes
Message-ID: <715317.84634.qm@web55301.mail.re4.yahoo.com>


Leif B. Kristensen wrote:

>>> You don't need to escape text when using the Python DB-API.
>>> DB-API will do everything for you.
>>> For example:
>>>  SQL = 'INSERT into TEMP data = %s'
>>>  c.execute(SQL, """ text containing ' and ` and all other stuff we
>>.  might
>>.   read from the network""")
>>. 
>>> You see, the SQL string contains a %s placeholder, but insetad of
>>> executing the simple string expansion SQL % """....""", I call the
>>> execute method with the text as a second *parametar*. Everything else
>>> is magic :).
> 
>> Sure, but does this work if you need more than one placeholder?

> Yes it works with more than one placeholder.

Yes, BUT: I have found that all of the placeholders must be STRINGS!

If I try to use other data types (%d, %f, etc.), I get an error:

File "/usr/lib/python2.5/site-packages/MySQLdb/cursors.py", line 149, in execute
    query = query % db.literal(args)
TypeError: float argument required

It's not a huge problem to convert my non-string args, but it
seems like this should be fixed, no?

- Michael

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/17b25f33/attachment.html>

From jusa.sj at gmail.com  Sun Oct 28 13:50:24 2007
From: jusa.sj at gmail.com (Juha S.)
Date: Sun, 28 Oct 2007 19:50:24 +0200
Subject: Weird AttributeError With Imports
In-Reply-To: <fg2glk$vq8$02$1@news.t-online.com>
References: <mailman.540.1193591133.13605.python-list@python.org>
	<fg2glk$vq8$02$1@news.t-online.com>
Message-ID: <4724CBE0.5010105@gmail.com>

Peter Otten wrote:
> Juha S. wrote:
>
>   
>> I'm getting a "AttributeError: 'module' object has no attribute 'clock'" 
>> when importing a module from within two packages related to the line: 
>> "self.lastTime = time.clock()" in the __init__() of the class Time in 
>> the target module.
>>     
>
> You probably have a time module that you wrote yourself and which is now
> hiding the one in python's standard library. Was your mytime.py formerly
> named time.py, and if so, did you remove the corresponding time.pyc?
>
> Peter
>   

Yes, I did have mytime.py named as time.py previously. Now that I 
deleted the .pyc it seems to work fine. Thanks!


From stefan.behnel-n05pAM at web.de  Wed Oct 10 03:19:33 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Wed, 10 Oct 2007 09:19:33 +0200
Subject: Unexpected behaviour with HTMLParser...
In-Reply-To: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
References: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
Message-ID: <470C7D05.1040801@web.de>

Just Another Victim of the Ambient Morality wrote:
>     HTMLParser is behaving in, what I find to be, strange ways and I would 
> like to better understand what it is doing and why.

In case you also want an HTML library that is easy to use (and powerful and
flexible and...), look at lxml.html.

http://codespeak.net/lxml/dev/lxmlhtml.html

It's part of lxml 2.0, which is currently in alpha status (which does not mean
it's unstable or something, just not as complete as its authors want it to be).

http://codespeak.net/lxml/dev/

Stefan


From aine_canby at yahoo.com  Tue Oct  9 06:33:19 2007
From: aine_canby at yahoo.com (aine_canby at yahoo.com)
Date: Tue, 09 Oct 2007 03:33:19 -0700
Subject: Python and UML
In-Reply-To: <5n12llFfhe3hU3@mid.uni-berlin.de>
References: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>
	<5n12llFfhe3hU3@mid.uni-berlin.de>
Message-ID: <1191925999.268412.39470@v3g2000hsg.googlegroups.com>

On 9 Okt, 12:15, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>  aine_ca... at yahoo.com wrote:
> > Hi,
>
> > I'm working with Python2.5 and pythonWin.
>
> > I'd like to start working with and learning more with UML. Can anyone
> > suggest any freeware design software that I might use to do this? I
> > also have
> > Visio installed on my computer if thats of any use...
>
> ArgoUML as modelling tool. The python-IDE eric also generates UML from
> class-hierarchies.
>
> IMHO UML is ... crap, at least when it comes to actual developing. But apart
> from that very personal opinion, the non-static-typedness of Python makes
> it hard to bring UML to it's full (however small that is in my POV) power.
>
> Diez

>> IMHO UML is ... crap, at least when it comes to actual developing. But apart
from that very personal opinion, the non-static-typedness of Python
makes
it hard to bring UML to it's full (however small that is in my POV)
power.

What alternatives are there?



From martin at v.loewis.de  Sun Oct 28 14:27:00 2007
From: martin at v.loewis.de (=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 28 Oct 2007 19:27:00 +0100
Subject: simple question on dictionary usage
In-Reply-To: <ffvob7$1kac$1@stationair.kjsl.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<13i6hgrqjs22n7b@corp.supernews.com>
	<ffvob7$1kac$1@stationair.kjsl.com>
Message-ID: <4724D474.1020203@v.loewis.de>

>> egt = {}
>> for key in record:
>>    if key.startswith('E'):
>>        egt[key] = record[key]
> 
> I actually had come up with something like this, but thought it wasn't
> quite as pythonish as it should be.  It is certainly much more readable
> to a neophyte to python.

My recommendation: forget about the comprehension-based ones. It *is*
Pythonic to have the code readable to a neophyte; there is no price to
win for shortness or cuteness.

>> egt = dict((k, v) for k, v in record.iteritems() if k.startswith('E'))
> 
> This is what I was looking for.  I thought I had seen something simular
> to this in one of the tutorials I had read, but couldn't seem to find it.

And you consider this readable? I find it way too complex.

> Ah!  Now this is one solution I can get my teeth into.  If its not obvious,
> I'm a recovering perl programmer.

Ok, I now see why you can appreciate the comprehension-based one :-)

Again, much of Python's strength comes from it being readable. Simple
is better than complex, and sparse is better than dense, and readability
counts (import this).

Regards,
Martin


From aleax at mac.com  Sun Oct  7 15:55:29 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 12:55:29 -0700
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
	<13gi4vrfqhrs48d@corp.supernews.com>
Message-ID: <1i5m4bz.18obx4r5bg0gaN%aleax@mac.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:
   ...
> Without __del__, what should I have done to test that my code was 
> deleting objects and not leaking memory?

See module gc in the Python standard library.


> What should I do when my objects need to perform some special processing
> when they are freed, if I shouldn't use __del__?

The solid, reliable way is:

from __future__ import with_statement

and use module contextlib from the Python standard library (or handcode
an __exit__ method, but that's rarely needed), generating these special
objects that require special processing only in 'with' statements.  This
"resource acquisition is initialization" (RAII) pattern is the RIGHT way
to ensure timely finalization (particularly but not exclusively in
garbage-collected languages, and particularly but not exclusively to
ease portability to different garbage collection strategies -- e.g.,
among CPython and future versions of IronPython and/or Jython that will
support the with statement).

An alternative that will work in pre-2.5 Python (and, I believe but I'm
not sure, in Jython and IronPython _today_) is to rely on the weakref
module of the standard Python library.  If your finalizer, in order to
perform "special processing", requires access to some values that depend
on the just-freed object, you'll have to carefully stash those values
"elsewhere", because the finalizer gets called _after_ the object is
freed (this crucial bit of sequencing semantics is what allows weak
references to work while "strong finalizers" [aka destructors] don't
play well with garbage collection when reference-loops are possible).
E.g., weakref.ref instances are hashable, so you can keep a per-class
dict keyed by them to hold the special values that are needed for
special processing at finalization, and use accessors as needed to make
those special values still look like attributes of instances of your
class.

E.g., consider:

import weakref

class ClosingAtDel(object):
    _xs = {}
    def __init__(self, x):
        self._r = weakref.ref(self, self._closeit)
        self._xs[self._r] = x
    @property
    def x(self):
        return self._xs[self._r]
    @classmethod
    def _closeit(cls, theweakref):
        cls._xs[theweakref].close()
        del cls._xs[theweakref]

This will ensure that .close() is called on the object 'wrapped' in the
instance of ClosingAtDel when the latter instance goes away -- even when
the "going away" is due to a reference loop getting collected by gc.  If
ClosingAtDel had a __del__ method, that would interfere with the garbage
collection.  For example, consider adding to that class the following
test/example code:

class Zap(object):
    def close(self): print 'closed', self

c = ClosingAtDel(Zap())
d = ClosingAtDel(Zap())
print c.x, d.x
# create a reference loop
c.xx = d; d.xx = c
# garbage-collect it anyway
import gc
del c; del d; gc.collect()
print 'done!'

you'll get a pleasant, expected output:

$ python wr.py
<__main__.Zap object at 0x6b430> <__main__.Zap object at 0x6b490>
closed <__main__.Zap object at 0x6b430>
closed <__main__.Zap object at 0x6b490>
done!

Suppose that ClosingAtDel was instead miscoded with a __del__, e.g.:


class ClosingAtDel(object):
    def __init__(self, x):
        self.x = x
    def __del__(self):
        self.x.close()


Now, the same test/example code would emit a desolating...:

$ python wr.py
<__main__.Zap object at 0x6b5b0> <__main__.Zap object at 0x6b610>
done!

I.e., the assumed-to-be-crucial calls to .close() have NOT been
performed, because __del__ inhibits collection of reference-looping
garbage.  _Ensuring_ you always avoid reference loops (in intricate
real-life cases) is basically unfeasible (that's why we HAVE gc in the
first place -- for non-loopy cases, reference counting suffices;-), so
the best strategy is to avoid coding __del__ methods, just as Marc
recommends.


Alex


From nagle at animats.com  Fri Oct 26 00:41:58 2007
From: nagle at animats.com (John Nagle)
Date: Fri, 26 Oct 2007 04:41:58 GMT
Subject: threading problem..
In-Reply-To: <1193346037.742074.16730@z9g2000hsf.googlegroups.com>
References: <1193346037.742074.16730@z9g2000hsf.googlegroups.com>
Message-ID: <qeeUi.64004$YL5.52295@newssvr29.news.prodigy.net>

    Tried that on Python 2.5 on Windows and it worked.

					John Nagle

Abandoned wrote:
> Hi..
> I want to threading but i have a interesting error..
> ==========
> class SelectAll(threading.Thread):
>    def __init__(self, name):
>       threading.Thread.__init__(self)
>       self.name = name #kelime
> 
>    def run(self):
>     ....
>     ....
>     self.result=...
> nglist=[]
> current = SelectAll(name)
> nglist.append(current)
> current.start()
>  for aaa in nglist:
>       aaa.join()
> 
> =============
> 
> and it gives me this error:
>     aaa.join()
> 
> AttributeError: 'dict' object has no attribute 'join'
> 
> 
> What is the problem i can't understand this error :(
> 


From akira_toya2006 at yahoo.com  Mon Oct  1 05:46:40 2007
From: akira_toya2006 at yahoo.com (akira)
Date: Mon, 01 Oct 2007 02:46:40 -0700
Subject: Updating new e-books!!
Message-ID: <1191232000.225676.182370@57g2000hsv.googlegroups.com>

Hello!! once again i'm updating my e-books!!
Check this out!!
http://freebooks2007.blogspot.com

thank youu!! have a nice day! ^^



From george.sakkis at gmail.com  Wed Oct 24 11:05:06 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 24 Oct 2007 15:05:06 -0000
Subject: Better writing in python
In-Reply-To: <1193236959.302628.244280@k35g2000prh.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193230962.271873.104900@v29g2000prd.googlegroups.com>
	<1193235331.202744.226950@q3g2000prf.googlegroups.com>
	<1193236959.302628.244280@k35g2000prh.googlegroups.com>
Message-ID: <1193238306.786948.271080@i38g2000prf.googlegroups.com>

On Oct 24, 10:42 am, cokofree... at gmail.com wrote:
> On Oct 24, 4:15 pm, Paul Hankin <paul.han... at gmail.com> wrote:
>
>
>
> > On Oct 24, 2:02 pm, kyoso... at gmail.com wrote:
>
> > > On Oct 24, 7:09 am, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
>
> > > > I'm just wondering, if I could write a in a "better" way this code
>
> > > > lMandatory = []
> > > > lOptional = []
> > > > for arg in cls.dArguments:
> > > >   if arg is True:
> > > >     lMandatory.append(arg)
> > > >   else:
> > > >     lOptional.append(arg)
> > > > return (lMandatory, lOptional)
>
> > > > I think there is a better way, but I can't see how...
>
> > > You might look into list comprehensions. You could probably do this
> > > with two of them:
>
> > > <code>
> > > # completely untested
> > > lMandatory = [arg for arg in cls.dArguments if arg is True]
> > > lOptional  = [arg for arg in cls.dArguments if arg is False]
> > > </code>
>
> > > Something like that. I'm not the best with list comprehensions, so I
> > > may have the syntax just slightly off.
>
> > Your list comprehensions are right, but 'arg is True' and 'arg is
> > False' are better written as 'arg' and 'not arg' respectively.
>
> > --
> > Paul Hankin
>
> Anyone know why towards arg is True and arg is False, arg is None is
> faster than arg == None ...

And quite often incorrect, especially the "arg is True" and "arg is
False".



From jeffober at gmail.com  Tue Oct 30 08:58:02 2007
From: jeffober at gmail.com (Jeff)
Date: Tue, 30 Oct 2007 12:58:02 -0000
Subject: python in academics?
In-Reply-To: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
Message-ID: <1193749082.839782.125050@o38g2000hse.googlegroups.com>

Yes, Python is used in many CS programs.  In fact, I read that Guido
van Rossum often polls profs about their needs when thinking about new
features and the direction of the language.



From alan.gauld at btinternet.com  Sun Oct  7 03:39:58 2007
From: alan.gauld at btinternet.com (Alan Gauld)
Date: Sun, 7 Oct 2007 08:39:58 +0100
Subject: Top Programming Languages of 2013
References: <20071007060510.5DC811E4006@bag.python.org>
Message-ID: <fea2hj$t2g$1@sea.gmane.org>


"Dick Moores" <rdm at rcblue.com> wrote 

> <http://www.redcanary.ca/view/top-programming>
> 

Interesting, but I'm not sure what the criteria for "top" is.
Is it a measure of power, popularity, usage?

Scary that HTML/CSS should be so high though 
given its not a programming language at all!

Alan G.



From informfr at gmail.com  Thu Oct  4 13:14:12 2007
From: informfr at gmail.com (JL)
Date: Thu, 04 Oct 2007 17:14:12 -0000
Subject: pickle and __slots__
In-Reply-To: <3k8Ni.3410$4V6.2826@newssvr14.news.prodigy.net>
References: <1191513088.578638.90270@d55g2000hsg.googlegroups.com>
	<3k8Ni.3410$4V6.2826@newssvr14.news.prodigy.net>
Message-ID: <1191518052.724013.317750@w3g2000hsg.googlegroups.com>

>     Is this a subclass?  Look at the parent classes.

Its class is a subclass of a similar class, but it indirectly
references instances of subclasses of asyncore.dispatcher or
asynchat.async_chat. I don't think there are other particular classes.
If I remove the first references, pickle works. Anyway it seems that I
will have to mask the asyncore.dispatcher and asynchat.async_chat
subclass instances which will not be relevant at unpickle time.



From marcpp at gmail.com  Thu Oct  4 07:24:54 2007
From: marcpp at gmail.com (marcpp)
Date: Thu, 04 Oct 2007 13:24:54 +0200
Subject: Program with wx in Linux and Windows
Message-ID: <fe2ii3$4ac$1@aioe.org>

Hi I've developed a program (WXpython GUI). In Linux the GUI is correct 
(various distributions), but in Windows all appears disordered.
Any recomendations?


From martin at v.loewis.de  Sun Oct 21 16:09:30 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 21 Oct 2007 22:09:30 +0200
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>	
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
Message-ID: <471BB1FA.1020704@v.loewis.de>

> Well C++ implicitly includes OOP since that is the foundation of the
> language. I was more or less asking if there was an object oriented
> version of the Python embedded API or perhaps an OO wrapper. However
> it doesn't seem that way, so I may have to make my own.

I think you are misinterpreting what you are seeing. The Python C API
*is* object-oriented. It has all features of object-orientation:
classes, encapsulation, polymorphism, late binding, ...

As for "make your own": people have tried this before; there are
multiple C++ wrappers around the Python C API available.

Regards,
Martin


From duncan.booth at invalid.invalid  Tue Oct 30 12:29:37 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 30 Oct 2007 16:29:37 GMT
Subject: setting variables in outer functions
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
Message-ID: <Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>

Neil Cerutti <horpner at yahoo.com> wrote:

> It's allows a standard programming idiom which provides a
> primitive form of object oriented programming using closures to
> represent state.
> 
> def account(opening_balance):
>   balance = opening_balance
>   def get_balance():
>     nonlocal balance
>     return balance
>   def post_transaction(x):
>     nonlocal balance
>     balance += x
>   return balance, post_transaction
> 
> fred_balance, fred_post = account(1500)
> joe_balance, joe_post = account(12)
> fred_post(20)
> joe_post(-10)
> fred_balance()
TypeError: 'int' object is not callable

> 1520
> joe_balance()
TypeError: 'int' object is not callable

> 2
> 
> Python classes will of course nearly always win, though the idiom
> looks like it might be faster (I don't have Python 3000 to try it
> out).

Python classes might be less error prone. I expect they could also be 
faster: accessing non-local variables (whether fetching or setting) has 
always been suprisingly slow in Python 2.x.


From stefan.behnel-n05pAM at web.de  Thu Oct 25 05:05:42 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Thu, 25 Oct 2007 11:05:42 +0200
Subject: python project ideas
In-Reply-To: <mailman.442.1193300742.13605.python-list@python.org>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
	<mailman.442.1193300742.13605.python-list@python.org>
Message-ID: <47205C66.6090906@web.de>

Evan Klitzke wrote:
> but you could also write your own templating engine for this.

No, please.

Stefan


From nagle at animats.com  Mon Oct  8 02:07:08 2007
From: nagle at animats.com (John Nagle)
Date: Sun, 07 Oct 2007 23:07:08 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191819516.274556.157500@d55g2000hsg.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191771096.541915.247650@k79g2000hse.googlegroups.com>
	<1191774244.572607.259510@o3g2000hsb.googlegroups.com>
	<1191795246.297622.88170@y42g2000hsy.googlegroups.com>
	<1191819516.274556.157500@d55g2000hsg.googlegroups.com>
Message-ID: <0BjOi.739$Pv2.557@newssvr23.news.prodigy.net>

Michele Simionato wrote:
> I wait with
> impatience the time when Web programming will become a solved
> problem with a standard built-in solution that works.

    That will probably come from Microsoft.  At least for
all-Microsoft environments.  They're the only player who
controls enough of the pieces.

				John Nagle


From kay.schluehr at gmx.net  Fri Oct  5 06:28:26 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 05 Oct 2007 03:28:26 -0700
Subject: unit testing
In-Reply-To: <7xlkaifz4o.fsf@ruckus.brouhaha.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
Message-ID: <1191580106.661227.129140@o3g2000hsb.googlegroups.com>

On Oct 4, 9:39 pm, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:

> Yeah, unittest is sort of a Java-ism.

However legend tells the story of Kent Beck and Erich Gamma sitting
together in a plane to ( or from ) New York and porting a unittest
framework from SmallTalk to Java. This extreme programming session was
the origin of JUnit.

It doesn't mean of course that XUnit is not a Javaism - it's just one
I like.

Kay



From mensanator at aol.com  Mon Oct 22 17:39:48 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 14:39:48 -0700
Subject: Iteration for Factorials
In-Reply-To: <877ileq40i.fsf@rudin.co.uk>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193083810.302605.128630@y27g2000pre.googlegroups.com>
	<877ileq40i.fsf@rudin.co.uk>
Message-ID: <1193089188.812952.241920@v29g2000prd.googlegroups.com>

On Oct 22, 3:38 pm, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
> tokl... at gmail.com writes:
> > On 22 oct, 20:35, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
>
> >> import operator
> >> def fact(x):
> >>     return reduce(operator.mul, xrange(1,x))
>
> > Maybe:
>
> > import operator
> > def fact(x):
> >     return reduce(operator.mul, xrange(2, x+1), 1)
>
> Or just:
>
> reduce(operator.mul, xrange(1, x), 1)

Nope, still doesn't work:

>>> def fact(x):
	return reduce(operator.mul,xrange(1,x+1),1)

>>> fact(3)
6
>>> fact(2)
2
>>> fact(1)
1
>>> fact(0)
1
>>> fact(-1)
1
>>> fact(-2)
1
>>> fact(-3)
1

fact() should raise an exception if x is negative.

My variant of your original (same as Tim Chase's except the
test for x==1 is not necessary):

>>> def fact(x):
	if x==0:
		return 1
	else:
		return reduce(operator.mul,xrange(1,x+1))

>>> fact(3)
6
>>> fact(2)
2
>>> fact(1)
1
>>> fact(0)
1
>>> fact(-1)

Traceback (most recent call last):
  File "<pyshell#40>", line 1, in <module>
    fact(-1)
  File "<pyshell#35>", line 5, in fact
    return reduce(operator.mul,xrange(1,x+1))
TypeError: reduce() of empty sequence with no initial value



From python.list at tim.thechases.com  Thu Oct  4 17:38:50 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 04 Oct 2007 16:38:50 -0500
Subject: Is there a nicer way to do this?
In-Reply-To: <87ejgawpug.fsf@keizer.soze.com>
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <47055D6A.7090407@tim.thechases.com>

> attributes = ['foo', 'bar']
> 
> attributeNames = {}
> n = 1
> for attribute in attributes:
>    attributeNames["AttributeName.%d" % n] = attribute
>    n = n + 1
> 
> It works, but I am wondering if there is a more pythonic way to
> do this.

"Better" may be subjective, but you could do something like

   attributes = ['foo', 'bar']
   attributeNames = dict(
       ("AttributeName.%d" % (i+1), attrib)
       for i, attrib
       in enumerate(attributes)
     )

HTH,

-tkc







From mauro.tiz at gmail.com  Wed Oct 10 09:44:50 2007
From: mauro.tiz at gmail.com (mauro)
Date: Wed, 10 Oct 2007 06:44:50 -0700
Subject: cannot create python packages
In-Reply-To: <mailman.23.1192021674.927.python-list@python.org>
References: <mailman.23.1192021674.927.python-list@python.org>
Message-ID: <1192023890.849856.233160@19g2000hsx.googlegroups.com>

On 10 Ott, 15:01, Konstantinos Pachopoulos <kostaspa... at yahoo.gr>
wrote:
> Hi,
> i have the following files:
> current_dir/level1/Called.py
> current_dir/Caller.py
>
> Called.py:
> -----------
> class Called:
>    def exec1(self):
>      print "Hello"
>
> Caller.py:
> ----------
> from level1.Called import *
>
> c=Called()
> c.exec1()
>
> However it is impossible for Caller.py to find
> Called.py. I even tried to place the level1 structure
> inside /usr/lib/pythonX.Y/, whithout success however.
> Any ideas?
>
> Thnx
>
>       ___________________________________________________________
> Want ideas for reducing your carbon footprint? Visit Yahoo! For Good  http://uk.promotions.yahoo.com/forgood/environment.html

I think you need a __init__.py file in level1 directory



From amjadcsu at gmail.com  Tue Oct 30 14:17:51 2007
From: amjadcsu at gmail.com (amjadcsu at gmail.com)
Date: Tue, 30 Oct 2007 18:17:51 -0000
Subject: Parsing xml file in python
Message-ID: <1193768271.521945.109230@t8g2000prg.googlegroups.com>

I am a newbie in python
I am trying to parse a xml file and write its content in a txt file.
The txt contains null elements. Any reason what  iam doing wrong here


Here is the code that i wrote

import sys,os
import xml.sax
import xml.sax.handler
from xml.sax.handler import ContentHandler
from xml.sax import make_parser

class gmondxmlparse (ContentHandler):

    def __init__(self,searchTerm):
        self.searchTerm=searchTerm;

    def startElement(self,name,attrs):

        if name=="HOST":
            self.hostname=attrs.get('NAME',"")
            self.IP=attrs.get('IP',"")
        elif name=="METRIC":
            self.metricname=attrs.get('NAME', "")
            self.metricvalue=attrs.get('VAL',"")
            self.metrictype=attrs.get('TYPE',"")
            self.metricunit=attrs.get('UNITS',"")
        return

    def endElement(self,name):
        if name=="HOST" and self.searchTerm==self.hostname:
            try:
                fh=open('/root/yhpc-2.0/ganglia.txt' ,'w')
            except:
                print "File /root/yhpc-2.0/ganglia.txt can not be
open"
                sys.exit(1)
            fh.write("This is a test for xml parsing with python with
chris and amjad \n")
            fh.write("the host name is", self.hostname, "\n")
            fh.write("the ip address is", self.IP, "\n")
            fh.close()

searchTerm="HOST"
parser=make_parser()
curHandler=gmondxmlparse(searchTerm)
parser.setContentHandler(curHandler)
parser.parse(open("/root/yhpc-2.0/gmond.xml"))


Here is the sample of xml file

Here is the  xmk file called gmond.xml
<HOST NAME="192.168.10.163" IP="192.168.10.163" REPORTED="1193689455"
TN="0" TMAX="20" DMAX="0" LOCATION="unspecified"
GMOND_STARTED="1193170061">
<METRIC NAME="cpu_num" VAL="2" TYPE="uint16" UNITS="CPUs" TN="994"
TMAX="1200" DMAX="0" SLOPE="zero" SOURCE="gmond"/>



From arunasunil at gmail.com  Tue Oct 23 01:09:51 2007
From: arunasunil at gmail.com (arunasunil at gmail.com)
Date: Tue, 23 Oct 2007 05:09:51 -0000
Subject: Monitoring external processes
Message-ID: <1193116191.769987.198560@z24g2000prh.googlegroups.com>

Hi,

Is there a way to track external processes launched by python on the
Mac? I am using subprocess module to launch the process.

Thanks
Sunil



From kyosohma at gmail.com  Tue Oct 16 13:37:30 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 16 Oct 2007 17:37:30 -0000
Subject: Good Book
In-Reply-To: <mailman.51.1192522719.13605.python-list@python.org>
References: <mailman.51.1192522719.13605.python-list@python.org>
Message-ID: <1192556250.936548.255060@i13g2000prf.googlegroups.com>

On Oct 16, 3:00 am, Lars Johansen <l... at larsjohansen.org> wrote:
> HI are there any recommended books for an sysadmin who has been mostly
> writing shell scripts, but want to move up to create more complex
> programs.

The Python Cookbook would probably be another good resource. While I
don't like the Dummies series' name, the Python Dummies book is a good
introduction, although it doesn't have enough examples, in my opinion.

Mike



From thomasjones at hotmail.com  Sat Oct  6 21:20:51 2007
From: thomasjones at hotmail.com (Tom Jones)
Date: Sat, 06 Oct 2007 18:20:51 -0700
Subject: esvect and reflectbox
Message-ID: <fe9c9k$7jb$1@skeeter.ucdavis.edu>

Hi,

I am trying to create a leftarrow of \vv{}.  I thought I could just 
reflect the vector, but the solution has escaped me.  Could someone help 
me out?

\def\traitfill@#1#2#3#4{%
   $\m at th\mkern2mu\relax#4#1\mkern-1.5mu%
    \cleaders\hbox{$#4\mkern0mu#2\mkern0mu$}\hfill%
    \mkern-1.5mu#3$%
}

was replaced with

\def\traitfill@#1#2#3#4{%
   \reflectbox{$\m at th\mkern2mu\relax#4#1\mkern-1.5mu%
    \cleaders\hbox{$#4\mkern0mu#2\mkern0mu$}\hfill%
    \mkern-1.5mu#3$}%
}

But the result is incorrect (the vector does not fill properly).

Thanks.


From lmierzej at o2.pl  Sun Oct 14 18:32:37 2007
From: lmierzej at o2.pl (Lukasz Mierzejewski)
Date: Sun, 14 Oct 2007 22:32:37 +0000 (UTC)
Subject: pydev code completion problem
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
	<5nfcodFhieq6U3@mid.uni-berlin.de> <feu3bf$8hs$1@nemesis.news.tpi.pl>
Message-ID: <feu5e5$edj$1@nemesis.news.tpi.pl>

> But maybe someone use Komodo IDE or Wing IDE and can tell how they handle
> situations like this? How works code completion in those IDE's?

I've downloaded and checked both of them (both have Linux version which is
nice thing). Both did worse job with code completion then PyDev with my
simple example. 

In my opinion PyDev code completion is really superior to Komodo's and
WingIDE's...


From jeremy+complangpython at jeremysanders.net  Wed Oct 17 11:01:45 2007
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Wed, 17 Oct 2007 16:01:45 +0100
Subject: Stopping a fucntion from printing its output on screen
References: <1192633024.035476.262830@i38g2000prf.googlegroups.com>
Message-ID: <ff584p$5af$1@gemini.csx.cam.ac.uk>

sophie_newbie wrote:

> Hi, in my program i need to call a couple of functions that do some
> stuff but they always print their output on screen. But I don't want
> them to print anything on the screen. Is there any way I can disable
> it from doing this, like redirect the output to somewhere else? But
> later on in the program i then need to print other stuff so i'd need
> to re-enable printing too. Any ideas?

If they are python functions, this hack should work...

import sys

class NullWriter(object):
    def write(self, arg):
        pass

def testfunc():
    print "this is a test"

nullwrite = NullWriter()
oldstdout = sys.stdout
sys.stdout = nullwrite  # disable output
testfunc()
sys.stdout = oldstdout  # enable output
testfunc()


-- 
Jeremy Sanders
http://www.jeremysanders.net/


From afriere at yahoo.co.uk  Tue Oct 16 22:38:19 2007
From: afriere at yahoo.co.uk (Asun Friere)
Date: Tue, 16 Oct 2007 19:38:19 -0700
Subject: best way of dealing with currency?
In-Reply-To: <slrnfhane0.mnn.usenet-mail@sed.homestarmy.net>
References: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>
	<5nkje5Fi5e9cU1@mid.uni-berlin.de>
	<slrnfhane0.mnn.usenet-mail@sed.homestarmy.net>
Message-ID: <1192588699.241705.72450@v23g2000prn.googlegroups.com>

On Oct 17, 10:56 am, Mark Shroyer <usenet-m... at markshroyer.com> wrote:
> On 2007-10-16, Diez B. Roggisch <de... at nospam.web.de> wrote:

> > The module decimal. But in the end, you might not be able to recreate
> > the same values as excel, due to the unknown intricacies of excel.
>
> But it can be done!  All it takes is a little dedication.  Here's a
> function that the OP might find useful, for example:
>
>   def excel_multiply(a, b):
>     if a * b != 850 * 77.1:
>       return a * b
>     else:
>       return 100000
>
> Best of luck,
> Mark

OK joke, but it's worth noting that python's decimal behaves in the
same way as Excel given this example:
>>> from decimal import Decimal
>>> 850*Decimal('77.1')
Decimal("65535.0")
>>>



From kyosohma at gmail.com  Fri Oct 19 11:44:49 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 19 Oct 2007 15:44:49 -0000
Subject: documenting excepetions in Python
In-Reply-To: <1192807949.182072.69370@y27g2000pre.googlegroups.com>
References: <1192807949.182072.69370@y27g2000pre.googlegroups.com>
Message-ID: <1192808689.312700.283420@k35g2000prh.googlegroups.com>

On Oct 19, 10:32 am, dale_bertr... at yahoo.com wrote:
> In python, how do I know what exceptions a method could raise?  Do I
> need to look at the source?  I don't see this info in the API docs for
> any of the APIs I'm using.
>
> Thanks in advance for your help.

Read the source, run unit tests, etc. If you write your own methods,
you might consider writing tests beforehand: http://en.wikipedia.org/wiki/Test-driven_development

Sometimes the module's docs will tell you the likely return values,
which can help you know what exceptions to look out for.

Mike



From fw3 at hotmail.co.jp  Tue Oct 16 17:34:16 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Tue, 16 Oct 2007 21:34:16 +0000
Subject: how to convert string to number?
In-Reply-To: <BLU107-W45441799345E5042B783C8B49C0@phx.gbl>
References: <mailman.68.1192547833.13605.python-list@python.org>
	<1192556770.939866.249160@e9g2000prf.googlegroups.com> 
	<BLU107-W45441799345E5042B783C8B49C0@phx.gbl>
Message-ID: <BLU107-W5890C1FEA66F50A1D53D6DB49C0@phx.gbl>


It seems that I have problem with the python-list, so I resend this.
 
Thanks
 
Frank


From: fw3 at hotmail.co.jpTo: python-list at python.orgSubject: how to convert string to number?Date: Tue, 16 Oct 2007 18:15:06 +0000


Hi, I have struggling to efficiently convert a string list to number. Here is my problem. I have a file that contains lines such as: data_1 1 1 2 3.5 After I read the data from the file by using readlines(), each line contains a string. I use the re moduel to split the line into ['data_1', '1','1','2','3.5']. I want to create a dictionary which contains {'data_1':[1 1 2 3.5]} The problem is I coud not efficiently find a way to convert the string to number.  Does anyone know how to create such dictionary efficiently? thanks Frank

???????????????????????????MSN ??????? http://keyword.jp.msn.com/default.aspx 
_________________________________________________________________
MSN???????EMI Artists?????????????? SCHOOL OF SCHOOL
http://music.jp.msn.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/904d8ac3/attachment.html>

From bignose+hates-spam at benfinney.id.au  Tue Oct 16 18:45:12 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 17 Oct 2007 08:45:12 +1000
Subject: why doesn't have this list a "reply-to" ?
References: <mailman.94.1192571119.13605.python-list@python.org>
Message-ID: <87ir563chz.fsf@benfinney.id.au>

stef mientki <stef.mientki at gmail.com> writes:

> I'm always have great difficulties, replying to this beautiful and
> helpful list.
> 
> When I hit the reply button,
> the message is sent personally to the sender and not to the list.

Yes. That's what the "reply" function is for: sending a reply to the
author of the message.

> I've subscribed to dozen's of lists,
> and all have an "reply-to" address, that points to list and not to the
> individual.

That's wrong; the "Reply-To" field is for the author to specify as
*their* choice of where personal replies should be sent. The author of
the message doesn't change just because the message was transported
via a mailing list.

    <URL:http://woozle.org/~neale/papers/reply-to-still-harmful.html>

The address for messages intended for the list is specified in a
different field: "List-Post". The Python mailing lists (like the
majority of well-run mailing lists) provide that field in every
message header, and have done for many years. Your mail composition
software has that field available to use for the "reply to the list"
function.

    <URL:http://www.ietf.org/rfc/rfc2369.txt>

If your mail composing software doesn't have a "reply to the mailing
list" function, you should pressure your provider to fix that.

-- 
 \      "Two rules to success in life: 1. Don't tell people everything |
  `\                                         you know."  -- Sassan Tat |
_o__)                                                                  |
Ben Finney


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 22 16:16:39 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 22:16:39 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193079694.562850.88100@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<471cf0b0$0$24416$426a74cc@news.free.fr>
	<1193079694.562850.88100@z24g2000prh.googlegroups.com>
Message-ID: <471d055b$0$22396$426a74cc@news.free.fr>

Sunburned Surveyor a ?crit :
> On Oct 22, 11:47 am, Bruno Desthuilliers
> <bdesth.quelquech... at free.quelquepart.fr> wrote:
(snip)
> 

> Bruno wrote: "You don't need these getters and setters. Python has
> support for
> computed attributes (look for 'property'), so until you need to
> control
> access, a plain attribute is all you need."
> 
> So I don't use getters, setters, and the property() function

Actually, it's a class. But anyway...

> unless I
> need to control how a property is accessed. Is this correct?

It is. The default is to use a plain attribute unless you already know 
you need a computed one.

Also, properties are just one example use of the descriptor protocol, 
which you can use to define your own 'smart properties' (it's a common 
idioms for ORMs and like).

> Bruno wrote: "And I seriously doubt that methods like 'eat_maiden' or
> 'fight_knight'
> will survive the first design round... "
> 
> I'm not really designing an RPG. I was jsut trying to come up with a
> simple example.

I think I did guess this - but nonetheless, it looked to much like a bad 
example of OO design to me.

> What you said about inheriting from a base class like
> Character makes sense. I am curious thought, what sounds wrong with
> methods like "eatMaiden" and "fightKnight". Are you thinking they
> should have been something like "eatCharacter" and "fightCharacter"
> instead? 

Looks somehow better. Now what about 'eat' and 'fight' ?-)

> I only ask because I am trying to learn how to write well
> designed Python code. :]

It's not really Python-specific - it's about not hard-wiring what should 
be generic.

> Bruno wrote: "I don't need nor want such a docstring in my code,
> thanks."

Fact is that I don't really like all those XXXdoc systems. But mostly, 
it's because, as other pointed out, no docstring is better than this 
template code.

> I guess epydoc isn't for everyone? :] Maybe I like it because it
> reminds me of Javadoc. It seemed useful to me because it helped define
> a "protocol" that could be followed for proper use of an object.

Which is certainly a sensible concern. Now as far as I'm concerned, a 
listing of arguments names and type is not the best approach. Good 
naming, textual explanations and code examples are IMHO better.

> Maybe
> I am trying to replace Java's static typing system with source code
> comments?

Documenting what 'kind' of objects your function waits for and/or 
returns - and/or what's the function's intent - is certainly not a bad 
idea in itself. But you don't necessarily needs that much formalism. 
Most of the time, the source code is readable enough for those who 
want/need a very formal and *exact* definition of the function !-)

> Bruno wrote: "Don't take it bad - there are languages that requires so
> much
> boilerplate that without code-generators, productivity tends to drop
> near zero. But that's not the case with Python."
> 
> This thread is helping me to realize this.

Then welcome onboard !-)

> I suppose the only thing my
> generator would be good for is the doc comments, and it doesn't sound
> like most of you would want those anyways.

Indeed. Another point is that, when it comes to 'boilerplate reduction', 
Python has far more to offer than textual code generation. Using a 
combination of custom descriptors, decorators, metaclasses and closures 
(and of course more common patterns like the template method...), you 
can abstract out pretty much of the 'plumbing' *without* any textual 
source-code generation. You may want to have a look at Elixir (an 
ActiveRecord inspired tiny declarative layer above SQLAlchemy) or 
FormEncode (a validation/conversion package) to see what I mean.

> Thanks for the feedback.

Thanks for reading the feedback !-)


From psaffrey at googlemail.com  Fri Oct 12 04:13:29 2007
From: psaffrey at googlemail.com (psaffrey at googlemail.com)
Date: Fri, 12 Oct 2007 08:13:29 -0000
Subject: Cross-platform GUI development
Message-ID: <1192176809.756259.316980@v29g2000prd.googlegroups.com>

I've been programming in Python for 5 or more years now and whenever I
want a quick-n-dirty GUI, I use Tkinter. This is partly because it's
the first toolkit I learnt, but also because it's part of the standard
Python distribution and therefore easy to get Python apps to work
cross platform - it usually requires almost no porting effort.

However, when I need a little bit more grunt, I tend to turn to Tix,
which I thought was also fairly standard. However, this week, I wrote
a Tix application under Linux which I'd really like to work on Mac OS
and it's proving fairly painful to get it going. There is no Tix in
the standard fink or apt repositories and when I download a tar-ball,
it wouldn't build because it had a lot of unmet dependencies. I then
read a post which said that only Tkinter/Python people really use Tix
anymore and people in tcl/tk moved onto better toolkits long ago.

My question is if Tix is old hat, what is the GUI toolkit I *should*
be using for quick-n-dirty cross platform GUI development? I guess
this is tangentially related to:

http://groups.google.com/group/comp.lang.python/browse_thread/thread/2ed58ff6ac7d030c/42ed0d40ffd0b1c0?lnk=gst&q=tix+#42ed0d40ffd0b1c0

I hope this isn't a stupid question. I'm wearing flame retardant
underwear.

Peter



From gagsl-py2 at yahoo.com.ar  Wed Oct  3 07:15:00 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 08:15:00 -0300
Subject: interfacing Python interpreter with a VB6 frontend
References: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>
	<mailman.1442.1191408542.2658.python-list@python.org>
	<T8SdnSZ71aS-6J7aRVnytAA@bt.com>
Message-ID: <op.tzmb7aopx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 03 Oct 2007 07:53:15 -0300, Anonymous <no.reply at here.com> escribi?:

> Ryan Ginstrom wrote:
>> One way to do this might be by creating a COM server with Python, and  
>> having
>> VB feed it lines of text and then collect results of execution for  
>> display.
>> win32com has demos of COM servers.
>
> Hi Ryan, do you have a link to the resources you mentioned?. I did a
> search for win32com - and found this :
> http://python.net/crew/mhammond/win32/FAQ.html  (most of the links were
> either dead, or refrerred to using COM from within Python - i.e. the
> OTHER way round).

win32com is part of the Python for Windows extensions by Mark Hammond:
https://sourceforge.net/projects/pywin32/

-- 
Gabriel Genellina



From dpsanders at gmail.com  Mon Oct 29 02:53:34 2007
From: dpsanders at gmail.com (David Sanders)
Date: Mon, 29 Oct 2007 06:53:34 -0000
Subject: Function to resize global numpy array interactively in ipython
Message-ID: <1193640814.316757.145890@i38g2000prf.googlegroups.com>

Hi,

I have a script with function definitions which I load into ipython
for interactive use.
These functions modify a global numpy array, whose size I need to be
able to change interactively.  I thus have a script which looks like
this:

from numpy import *

def do_resize(N):
	global a
	a = resize(a, N)

a = array([])

N=10; do_resize(N)
print "Length of a is: ", len(a)
N=20; do_resize(N)
print "Length of a is: ", len(a)


If I run this in ipython, using "run resize.py", it correctly outputs
10 and then 20.
If I now type *interactively*  N=30; do_resize(N),  then the length of
a is still 20, rather than 30 as I was hoping -- somehow I seem to be
now dealing with a different copy of a?

Doing the same thing in idle works as I expect, i.e. interactively the
size is changed to 30.

Could somebody please explain what's going on, and how I solve the
problem?

Thanks and best wishes,
David.



From deets at nospam.web.de  Fri Oct  5 12:55:48 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 05 Oct 2007 18:55:48 +0200
Subject: picture filter
In-Reply-To: <1191600265.590444.239110@57g2000hsv.googlegroups.com>
References: <1191600265.590444.239110@57g2000hsv.googlegroups.com>
Message-ID: <5mn8klFegvqqU1@mid.uni-berlin.de>

oruccim at gmail.com schrieb:
> hii my friends
> ? want to a filter for porn picture
> if you know , please help me :S:S
> how  do ? separate porn form not porn
> I don't want my web site porn;)
> (my english bad I hope understant it. very very thans )

If anybody know how to do that, he or she would immediatly become 
incredibly rich, selling this magic filter to concerned parents as well 
as eager porn enthusiasts, to help them filter away the noise or dirt, 
from their respective viewpoints that is of course...

So - you're out of luck buddy. Nobody will be able to help you.


Diez



From antroy at gmail.com  Mon Oct 22 08:00:02 2007
From: antroy at gmail.com (Ant)
Date: Mon, 22 Oct 2007 05:00:02 -0700
Subject: python with braces pre-processor
In-Reply-To: <ffhs90$ikp$2@news.ciril.fr>
References: <ffhrdr$ikp$1@news.ciril.fr>
	<1193046718.083827.246210@z24g2000prh.googlegroups.com>
	<ffhs90$ikp$2@news.ciril.fr>
Message-ID: <1193054402.482756.178190@z24g2000prh.googlegroups.com>

On Oct 22, 10:58 am, Paul Brauner <paul.brau... at loria.fr> wrote:
> I'll look at that. Thanks a lot !

I've just had a look, it's the pindent.py script in Tools/Scripts (at
least it is on Windows). It takes code of the following form:

def foobar(a, b):
   if a == b:
       a = a+1
   elif a < b:
       b = b-1
       if b > a: a = a-1
       # end if
   else:
       print 'oops!'
   # end if
# end def foobar

The help in the script looks pretty good.

--
Ant...



From dformosa at usyd.edu.au  Mon Oct 22 16:10:29 2007
From: dformosa at usyd.edu.au (David Formosa (aka ? the Platypus))
Date: Mon, 22 Oct 2007 20:10:29 GMT
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
Message-ID: <slrnfhq1qt.8ad.dformosa@localhost.localdomain>

["Followup-To:" header set to comp.lang.functional.]
On Mon, 22 Oct 2007 11:30:51 -0400, George Neuner <gneuner2/@/comcast.net> wrote:
> On Mon, 22 Oct 2007 05:50:30 -0700, Xah Lee <xah at xahlee.org> wrote:

[...]

>>5. This is arguable and trivial, but i think TeX judged as a computer
>>language in particular its syntax, on esthetical grounds, sucks in
>>major ways.
>
> No one except you thinks TeX is a "computer language".

TeX is Turing compleate so it is quite valid to consider it a computer language.  Though
Xah Lee is correct more by co-incidence.



From bdesth.quelquechose at free.quelquepart.fr  Thu Oct  4 11:39:42 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 17:39:42 +0200
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <mailman.1603.1191628484.2658.python-list@python.org>
References: <fe583c$4kj$1@sea.gmane.org>
	<mailman.1603.1191628484.2658.python-list@python.org>
Message-ID: <4707f557$0$14339$426a74cc@news.free.fr>

Terry Reedy a ?crit :
> "Steve Holden" <steve at holdenweb.com> wrote in message 
> news:fe583c$4kj$1 at sea.gmane.org...
> | I've just been told by the editors at Python Magazine that the first
> | issue is out. It's all-electronic so anyone can download and read it.
> | Let them know what you think:
> |
> |   http://www.pythonmagazine.com/c/issue/2007/10
> 
> OK.  Given that my (widescreen) monitor, like most current monitors, does 
> not rotate into the portrait mode that would display a whole page, double 
> column pdf files are painful to read on a screen.  Up and down, up and 
> down.  And the color pages cannot be sensibly printed  on a b/w printer, 
> even if I wanted to go to paper (which is what pdf was meant for), which I 
> do not.  Mismatching electronic documents to the screens they are most 
> commonly read on is to me at least shortsighted.  So I suggest that you 
> also produce a readable html version. 

+1


From deets at nospam.web.de  Thu Oct 18 05:09:32 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 11:09:32 +0200
Subject: if instance exists problem ..
References: <mailman.142.1192660790.13605.python-list@python.org>
	<5nnj7qFjae1oU1@mid.uni-berlin.de> <874pgp1eod.fsf@benfinney.id.au>
Message-ID: <5nom6cFje9mdU1@mid.uni-berlin.de>

Ben Finney wrote:

> "Diez B. Roggisch" <deets at nospam.web.de> writes:
> 
>> stef mientki schrieb:
>> > What should I do to the same simple test for existance ?
>> 
>> Use isinstance(obj, type).
> 
> No, that's *far* more specific than "does it exist", and will give
> false negatives.

I've misread the post entirely, so just... discard my message :)

Diez


From rjh at cyberscience.com  Mon Oct  8 10:19:21 2007
From: rjh at cyberscience.com (Richie Hindle)
Date: Mon, 08 Oct 2007 15:19:21 +0100
Subject: changes on disk not visible to script ?
In-Reply-To: <1191852713.859771.109190@19g2000hsx.googlegroups.com>
References: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>
	<mailman.1667.1191851919.2658.python-list@python.org>
	<1191852713.859771.109190@19g2000hsx.googlegroups.com>
Message-ID: <r0fkg3ponnu949t8cfkal1jbu2pc9kn1kl@4ax.com>

[Bruce]
> VB programmer!? Thats really harsh..

No offence intended!  8-)

-- 
Richie


From robert.kern at gmail.com  Tue Oct 16 16:52:02 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 16 Oct 2007 15:52:02 -0500
Subject: how to get my own namespace ?
In-Reply-To: <4715226E.2020904@gmail.com>
References: <4715226E.2020904@gmail.com>
Message-ID: <ff389o$bfp$2@ger.gmane.org>

stef mientki wrote:
> I want to view my own namespace,
> i.e. to see the modules namespace in the module itself,
> is that possible ?
> 
> I can use
>    dir()
> but I read dir is just a convenience function,
> and besides I want key/value pairs.

vars() will give you a dictionary copy of the local namespace, but modifying it
won't modify the namespace.

globals() will give you the module's namespace as a dictionary which you can modify.

locals() will give you the local namespace (wherever you happen to be), but you
may be restricted from modifying that dictionary in some circumstances.

-- 
Robert Kern

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



From michele.simionato at gmail.com  Wed Oct 10 03:13:15 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Wed, 10 Oct 2007 07:13:15 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191988646.640498.278860@19g2000hsx.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191988646.640498.278860@19g2000hsx.googlegroups.com>
Message-ID: <1192000395.766831.5390@50g2000hsm.googlegroups.com>

On Oct 10, 5:57 am, mdipie... at cs.depaul.edu wrote:
> Since you are starting a new project you may want to look into
> something new and different
>
> http://mdp.cti.depaul.edu/examples

Well, the name is certainly appealing to an old gauge field theorist
like myself ;)


 Michele Simionato



From gherzig at fmed.uba.ar  Mon Oct 29 08:45:46 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Mon, 29 Oct 2007 09:45:46 -0300
Subject: Which index can i use ?
In-Reply-To: <1193576419.825167.144400@50g2000hsm.googlegroups.com>
References: <1193576419.825167.144400@50g2000hsm.googlegroups.com>
Message-ID: <4725D5FA.1030801@fmed.uba.ar>

Abandoned wrote:

>Hi..
>I want to do index in postgresql & python.
>My table:
>id(int) | id2(int) | w(int) | d(int)
>
>My query:
>select id, w where id=x and id2=y (sometimes and d=z)
>
>I have too many insert and select operation on this table.
>And which index type can i use ? Btree, Rtree, Gist or Hash ?
>Also I want to unique (id, id2)..
>Now this is my index. is it give me good performance ?
>CREATE UNIQUE INDEX ind1 ON test USING btree (id, id2)
>CREATE INDEX ind2 ON test USING btree (id)
>CREATE INDEX ind3 ON test USING btree (id2)
>CREATE INDEX ind4 ON test USING btree (w)
>CREATE INDEX ind5 ON test USING btree (d)
>
>I'm too sorry my bad english.
>King regards..
>
>  
>
Well, this is no python-related at all. But, for a start, if you are not 
using the 'w' field in the WHERE clause, the ind4 index is not necesary 
at all. Having more indexes that you need is a waste of space and 
perfomance. It also depends on the amount of records your table has.
-Hash indexes are discouraged
-GiST indexes are for more advanced uses than equality comparisons
-Rtree are used in multidimentional indexing

So, keep the default btree. Do the test with the diff indexes if you 
want. You may use EXPLAIN for viewing the  index usage.
And dont forget about VACUUM too!

Cheers.
Gerardo


From deets at nospam.web.de  Sat Oct 27 12:16:59 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 27 Oct 2007 18:16:59 +0200
Subject: sort a list
In-Reply-To: <mailman.509.1193501261.13605.python-list@python.org>
References: <mailman.509.1193501261.13605.python-list@python.org>
Message-ID: <5oh6kdFmmgjrU1@mid.uni-berlin.de>

_nospamnet_ at arcor.de schrieb:
> hello,
> 
> I'm new to python and this list.I hope this question don't repeat an old story on the list.
> 
> I have a number list,say it's [3,2,1,4,5],I want to sort it as [1,2,3,4,5],how to do?

your_list.sort()

Please read the documentation, all of this is properly documented.

And even google would have brought that up really fast:

google:python list sort

1) http://xahlee.org/perl-python/sort_list.html (Oh my, it's Xah....)

2) http://docs.python.org/lib/typesseq-mutable.html (official python docs)


So the first two links give you all the information you needed.

Diez


From aahz at pythoncraft.com  Mon Oct  8 00:27:31 2007
From: aahz at pythoncraft.com (Aahz)
Date: 7 Oct 2007 21:27:31 -0700
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
Message-ID: <fecbjj$5rn$1@panix3.panix.com>

In article <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d at comcast.com>,
Steven Bethard  <steven.bethard at gmail.com> wrote:
>
>You can use __slots__  [...]

Aaaugh!  Don't use __slots__!

Seriously, __slots__ are for wizards writing applications with huuuge
numbers of object instances (like, millions of instances).  For an
extended thread about this, see

http://groups.google.com/group/comp.lang.python/browse_thread/thread/8775c70565fb4a65/0e25f368e23ab058
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

The best way to get information on Usenet is not to ask a question, but
to post the wrong information.


From gagsl-py2 at yahoo.com.ar  Mon Oct 29 02:47:03 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 03:47:03 -0300
Subject: clear shell screen
References: <47254E9E.3040008@comcast.net>
Message-ID: <op.t0x44pgvx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Mon, 29 Oct 2007 00:08:14 -0300, Shawn Minisall  
<trekker182 at comcast.net> escribi?:

> Does anyone know how to clear the shell screen completely ?  I tried
> import os and then os.system("clear") was said to have worked in Windows
> XP, but it's just bringing up another window, then it turns black and
> then it closes in within about a second moving the prompt at the
> os.system("clear") line .  I've also tried os.system("cls") with the
> same results.

Try running cls from a command prompt. If it works, it should work from  
inside Python, using os.system("cls")


-- 
Gabriel Genellina



From smitty1e at gmail.com  Fri Oct 26 00:25:08 2007
From: smitty1e at gmail.com (smitty1e)
Date: Fri, 26 Oct 2007 04:25:08 -0000
Subject: sqlite to .el translator [2 of 2]
Message-ID: <1193372708.267038.262520@y42g2000hsy.googlegroups.com>

Since I haven't yet been shot for the earlier post of a .py to sqlite
rendering script, here is another script that takes the previous
output and does something useful.
Note that this is not the full integration with PyMacs--I rather hope
to spark some interest and save some time headbanging on a) getting
this right, and b) getting it integrated.
What sort of a poetic reference can we get here?  "Inflammation of the
source code reminds me of your script..."
Cheers,
Chris

#invocation:
smitty at localhost ~/proj/mddl4/test $ ./elisp_extractor.py -f output -o
sample.el -p sample

#output:
smitty at localhost ~/proj/mddl4/test $ cat sample.el
(sample-sample---init-- (self some-string))
(sample-sample-show (self))

#script:
#!/usr/bin/python

from   optparse import OptionParser
import re
import sqlite3


CLASS_OFFSET  = 4
ALL_CLASSES   = """SELECT     parse_tree_id
                            , parse_tree_value
                   FROM       tbl_parse_tree    A
                   INNER JOIN
                            ( SELECT    MAX(parse_tree_id) AS
parse_tree_id_
                              FROM      tbl_parse_tree
                              UNION ALL
                              SELECT    parse_tree_id + %s         --
offset to get name
                              FROM      tbl_parse_tree
                              WHERE     parse_tree_symbol_id=328   --
classdefs
                                    AND parse_tree_indent   =  0   --
but not nested
                              ORDER  BY 1 DESC) B
                          ON A.parse_tree_id = B.parse_tree_id_;""" %
CLASS_OFFSET

FUNC_OFFSET   = 4
CLASS_FUNCS   = """SELECT     parse_tree_id
                            , parse_tree_value
                   FROM
                              tbl_parse_tree A
                   INNER JOIN
                            ( SELECT    parse_tree_id + %s AS
parse_tree_id_
                              FROM      tbl_parse_tree
                              WHERE     parse_tree_id   BETWEEN %s AND
%s
                                    AND parse_tree_symbol_id = 261
--funcdefs
                                    AND parse_tree_indent    =   1 ) B
                           ON A.parse_tree_id=B.parse_tree_id_;
--no nested funcs"""

FUNC_ARGS     = """SELECT parse_tree_value
                   FROM   tbl_parse_tree
                   WHERE  parse_tree_id BETWEEN %s AND
                          (SELECT MIN(parse_tree_id)
                           FROM   tbl_parse_tree
                           WHERE  parse_tree_id        > %s
                              AND parse_tree_symbol_id = 8)
                   AND parse_tree_symbol_id = 1;"""



def extract_emacs_representation_of_python_classes( module_name
                                                  , file_name
                                                  , target_name ):
    """module_name  prefixes all of the functions
       file_name    is an sqlite database file specification
       target_name  is an output .el file specification
    """
    conn = sqlite3.connect( file_name  )
    conn.isolation_level  = None
    c    = conn.cursor()
    c.execute(              ALL_CLASSES )

    buf          = 0
    class_ranges = []
    targ_file    = open( target_name, 'w' )

    #build up a list of class data
    for row in c:
        if (buf != 0):
            class_ranges.append( (row[0],buf-1,row[1]) )
        buf = row[0]

    for cur_class in class_ranges:
        c.execute(  CLASS_FUNCS % ( FUNC_OFFSET,
cur_class[0],cur_class[1]) )
        func_args = []
        for row in c:
            func_args.append( (row[0]+1,row[1]) )

        #print report
        cur_prefix = "%s-%s" % (module_name,
re.sub("_","-",cur_class[2]))

        for row in func_args:
            c.execute( FUNC_ARGS % (row[0], row[0]) )
            args = []
            for arg in c:
                args.append( arg[0] )
            targ_file.write( "(%s-%s (%s))\n" \
                           % ( cur_prefix
                             , re.sub( "_", "-", row[1])
                             , re.sub( "_", "-", " ".join(args))))
    targ_file.close()

def main():
    usage    = "usage: %prog [options] arg"
    parser   = OptionParser(usage)
    parser.add_option("-f", "--file",  dest="filename"
                     , action="store", type="string"
                     , help  ="connect to sqlite file FILENAME")
    parser.add_option("-o", "--output",dest="output"
                     , action="store", type="string"
                     , help  ="name of .el output file")
    parser.add_option("-p", "--prefix",dest="prefix"
                     , action="store", type="string"
                     , help  ="prefix for use in elisp")
    (options, args) = parser.parse_args()
    extract_emacs_representation_of_python_classes( options.prefix
                                                  , options.filename
                                                  , options.output   )

if __name__ == "__main__":
    main()



From bdesth.quelquechose at free.quelquepart.fr  Wed Oct 17 16:57:10 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 17 Oct 2007 22:57:10 +0200
Subject: Need help in updating a global variable by a thread
In-Reply-To: <1192646888.230515.223140@k35g2000prh.googlegroups.com>
References: <1192646888.230515.223140@k35g2000prh.googlegroups.com>
Message-ID: <4716775d$0$27247$426a74cc@news.free.fr>

dedalusenator at gmail.com a ?crit :
> Hello Folks,
> 
> My first posting here and I am a stuck in figuring out the exact way
> to update a global variable from within a function that doesnt return
> any value (because the function is a target of the thread and I dont
> know how exactly return would work in such a case). I am sure I am
> missing something very fundamental here. The essential pieces of my
> code that cause the problem would be something like this:
> ---------------------------------------------
> lookuptab = {'1.9.7.3':'Bangkok','1.9.60.3':'Sydney'}
> 
> results = {}
> 
> for val in lookuptab.values():
>     results[val]=0
> 
> def testt(loc):
>        global results
>        results[loc] = 1
>        return results[loc]
> 
> for x in lookuptab.values():
>       thread = threading.Thread(target=testt,args=(x))
>       thread.start()
> print results
> -------------------------------------------------------

"Would be" ?

I had to fix a couple problems to get your code running (namely, 
importing threading and passing correct args to threading.Thread). Do 
yourself a favour: next time, take time to post *working* code.

Anyway... Here's a (corrected) version with a couple prints here and 
there. I think the output is clear enough:

import threading
import time

lookuptab = {'1.9.7.3':'Bangkok','1.9.60.3':'Sydney'}
results = dict((val, 0) for val in lookuptab.values())

def testt(loc):
        global results
        print "t-%s before: %s" % (loc,results)
        results[loc] = 1
        print "t-%s after: %s" % (loc,results)

def main():
       for x in lookuptab.values():
             thread = threading.Thread(target=testt,args=(x,))
             thread.start()

       print "main - no sleep: %s" % results
       time.sleep(1)
       print "main - 1s later : %s" % results

if __name__ == '__main__': main()

And the output is:

main - no sleep: {'Bangkok': 0, 'Sydney': 0}
t-Bangkok before: {'Bangkok': 0, 'Sydney': 0}
t-Bangkok after: {'Bangkok': 1, 'Sydney': 0}
t-Sydney before: {'Bangkok': 1, 'Sydney': 0}
t-Sydney after: {'Bangkok': 1, 'Sydney': 1}
main - 1s later : {'Bangkok': 1, 'Sydney': 1}


Now if I may give you an advice about threads and globals (or any other 
kind of shared state): learn about semaphores. While this may not be an 
issue in this snippet, race conditions is definitively something you 
want to avoid whenever possible and cleanly handle else.

HTH


From hniksic at xemacs.org  Fri Oct 26 19:54:58 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Sat, 27 Oct 2007 01:54:58 +0200
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
Message-ID: <87640to2i5.fsf@mulj.homelinux.net>

jimmy.musselwhite at gmail.com writes:

> The calculation looks like this
>
> A = 0.35
> T = 0.30
> C = 0.25
> G = 0.10
>
> and then I basically continually multiply those numbers together. I
> need to do it like 200,000+ times but that's nuts. I can't even do it
> 1000 times or the number rounds off to 0.0. I tried taking the inverse
> of these numbers as I go but then it just shoots up to "inf".

>>> import gmpy
>>> A = gmpy.mpf('0.35')
>>> B = gmpy.mpf('0.30')
>>> C = gmpy.mpf('0.25')
>>> D = gmpy.mpf('0.10')
>>> result = gmpy.mpf(1)
>>> for n in xrange(200000):
...   result *= A
...   result *= B
...   result *= C
...   result *= D
...
>>> result
mpf('7.27023409768722186651e-516175')

It's reasonably fast, too.  The above loop took a fraction of a second
to run on an oldish computer.


From kyosohma at gmail.com  Tue Oct 23 13:57:02 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 23 Oct 2007 10:57:02 -0700
Subject: Hiding tracebacks from end-users
In-Reply-To: <13hs7247ncm67d@corp.supernews.com>
References: <13hs7247ncm67d@corp.supernews.com>
Message-ID: <1193162222.887437.56100@z24g2000prh.googlegroups.com>

On Oct 23, 11:07 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> I'm writing a command-line application that is meant to be relatively
> user friendly to non-technical users.
>
> (Some wags might like to say that "user friendly" and "command-line
> application" are, by definition, contradictory. I disagree.)
>
> Consequently, I'd like to suppress Python's tracebacks if an error does
> occur, replacing it with a more friendly error message. I'm doing
> something like this:
>
> try:
>     setup()
>     do_something_useful()
> except KeyboardInterrupt:
>     print >>sys.stderr, "User cancelled"
>     sys.exit(2)
> except Exception, e:
>     if expert_mode:
>         # experts get the full traceback with no hand-holding.
>         raise
>     else:
>         # print a more friendly error message
>         if isinstance(e, AssertionError):
>             msg = "An unexpected program state occurred"
>         elif isinstance(e, urllib2.HTTPError):
>             msg = "An Internet error occurred"
>         else:
>             # catch-all for any other exception
>             msg = "An error occurred"
>         print>>sys.stderr, msg
>         print>>sys.stderr, e
>         sys.exit(1)
> else:
>     sys.exit(0)
>
> Is this a good approach? Is there another way to suppress the traceback
> and just print the error message?
>
> --
> Steven.

I think this is a good approach too. But why are you using If
statements for some errors? You should be able to do something like
this:

try:
    do something
except AssertionError:
    do something
except ZeroDivisionError:
    do something
except urllib2.HTTPError:
    do something
except...

etc, etc...

If you know what errors to expect, make them into a specific except
block. And leave the catchall on there for the exceptions you've
forgotten.

Mike



From khemkaamit at gmail.com  Thu Oct 18 07:11:48 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Thu, 18 Oct 2007 16:41:48 +0530
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <1192666776.3244.12.camel@localhost.localdomain>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<1192666776.3244.12.camel@localhost.localdomain>
Message-ID: <1360b7230710180411h170b62e0g31cf72b836b60c23@mail.gmail.com>

On 10/18/07, Carsten Haese <carsten at uniqsys.com> wrote:
> On Wed, 2007-10-17 at 23:55 +0000, Debajit Adhikary wrote:
> > I'm writing this little Python program which will pull values from a
> > database and generate some XHTML.
> >
> > I'm generating a <table> where I would like the alternate <tr>'s to be
> >
> > <tr class="Even">
> > and
> > <tr class="Odd">
> >
> > What is the best way to do this?
> >
> > I wrote a little generator (code snippet follows). Is there a better
> > (more "Pythonic") way to do this?
> >
> >
> > # Start of Code
> >
> > def evenOdd():
> >     values = ["Even", "Odd"]
> >     state = 0
> >     while True:
> >         yield values[state]
> >         state = (state + 1) % 2
> >
> >
> > # Snippet
> >
> >     trClass = evenOdd()
> >     stringBuffer = cStringIO.StringIO()
> >
> >     for id, name in result:
> >         stringBuffer.write('''
> >         <tr class="%s">
> >             <td>%d</td>
> >             <td>%s</td>
> >         </tr>
> >         '''
> >         %
> >         (trClass.next(), id, name))
>
> This is a respectable first attempt, but I recommend you familiarize
> yourself with the itertools module. It has lots of useful tools for
> making your code more elegant and concise.
>
> Rather than spelling out the final result, I'll give you hints: Look at
> itertools.cycle and itertools.izip.
>

Why not just use enumerate ?

clvalues = ["Even", "Odd"]
for i, (id, name) in enumerate(result):
    stringBuffer.write('''
    <tr class="%s">
           <td>%d</td>
           <td>%s</td>
     </tr>
     '''
    %
    (clvalues[i % 2], id, name))

Cheers,

-- 
--
Amit Khemka


From bj_666 at gmx.net  Thu Oct 25 02:52:41 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 25 Oct 2007 06:52:41 GMT
Subject: about functions question
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
Message-ID: <5oasppFm1hl5U3@mid.uni-berlin.de>

On Thu, 25 Oct 2007 06:28:16 +0000, NoName wrote:

> I try it:
> 
> def b():
>   ...
>   a()
>   ...
> 
> def a():
>   ...
>   b()
>   ...
> 
> b()
> it's not work.

What do you mean by not working?  At the time `b()` is called, both
functions are defined so it should working.  Or at least it's not the
problem you think it is.  The code above, the dots replaced with nothing,
will of course run "forever" until the stack limit is reached.

Ciao,
	Marc 'BlackJack' Rintsch


From python at rcn.com  Wed Oct 17 18:45:57 2007
From: python at rcn.com (Raymond Hettinger)
Date: Wed, 17 Oct 2007 15:45:57 -0700
Subject: Last iteration?
In-Reply-To: <1192619565.311026.38160@v23g2000prn.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
	<1192605396.249377.217430@i38g2000prf.googlegroups.com>
	<1192619565.311026.38160@v23g2000prn.googlegroups.com>
Message-ID: <1192661157.684855.325510@z24g2000prh.googlegroups.com>

[Paul Hankin]
> def lastdetector(iterable):
>     t, u = tee(iterable)
>     return izip(chain(imap(lambda x: False, islice(u, 1, None)),
>         [True]), t)

Sweet!  Nice, clean piece of iterator algebra.

We need a C-speed verion of the lambda function, something like a K
combinator that consumes arguments and emits constants.


Raymond





From jcd at sdf.lonestar.org  Sat Oct 27 15:35:07 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Sat, 27 Oct 2007 15:35:07 -0400
Subject: while within while
In-Reply-To: <47238F87.2010808@comcast.net>
References: <47238F87.2010808@comcast.net>
Message-ID: <472392EB.7080403@sdf.lonestar.org>

Shawn Minisall wrote:
> K I've since fixed the UnboundLocalError: local variable 'ai' referenced 
> before assignment error, I forgot to include decision = (1, 2, 3) inside 
> " " for each number.
>
>   
You mean like decision = ("1", "2", "3") ?  I don't think that would
have caused the error you reported.  You probably changed something else
as well.
> Now when I run it, I get this..
>
>  >>> main()
> READY TO PLAY ROCK, PAPER, SCISSORS???
>
> Please choose from the following menu:
> 1. See the rules
> 2. Play against the computer
> 3. Play a two player game
> 4. Exit
> Please enter your choice here: 2
>
> =====================
> you choose scissors
>
> I choose
>
> YOU LOSE!
>
> Rounds Won:  0
>
> Rounds Lost:  1
>
> Rounds Tied:  0
>
>
> Would you like to play again? y
> Please choose from the following menu:
> 1. See the rules
> 2. Play against the computer
> 3. Play a two player game
> 4. Exit
> Please enter your choice here: 2
>
> Please choose a weapon from the following menu:
> 1. Rock
> 2. Paper
> 3. Scissors
> Please choose a weapon: 1
>
> and then the weapon submenu repeats over and over.
>
> It's also like the program is ignoring
>
>                 if ai == "1":
>                     ai = "rock"
>                 if ai == "2":
>                     ai = "paper"
>                 if ai == "3":
>                     ai = "scissors"
>
> since it says I choose ________ 
>
>   
Lo and behold: it *is* ignoring that block.  Why?  Or in other words
what set of conditions have to be true in order to reach that block? 
Which one of them is false?  (Hint: Check your while loops, and your
initialization variables.)

Also, Why not use decision = ('rock', 'paper', 'scissors')?

Cheers,
Cliff


From aleax at mac.com  Sun Oct  7 16:24:14 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 13:24:14 -0700
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>

Licheng Fang <fanglicheng at gmail.com> wrote:
   ...
> Python Tutorial says an empty class can be used to do this. But if
> namespaces are implemented as dicts, wouldn't it incur much overhead
> if one defines empty classes as such for some very frequently used
> data structures of the program?

Just measure:

$ python -mtimeit -s'class A(object):pass' -s'a=A()' 'a.zop=23'
1000000 loops, best of 3: 0.241 usec per loop

$ python -mtimeit -s'a=[None]' 'a[0]=23'
10000000 loops, best of 3: 0.156 usec per loop

So, the difference, on my 18-months-old laptop, is about 85 nanoseconds
per write-access; if you have a million such accesses in a typical run
of your program, it will slow the program down by about 85 milliseconds.
Is that "much overhead"?  If your program does nothing else except those
accesses, maybe, but then why are your writing that program AT ALL?-)

And yes, you CAN save about 1/3 of those 85 nanoseconds by having
'__slots__=["zop"]' in your class A(object)... but that's the kind of
thing one normally does only to tiny parts of one's program that have
been identified by profiling as dramatic bottlenecks, to shave off the
last few nanoseconds in the very last stages of micro-optimization of a
program that's ALMOST, but not QUITE, fast enough... knowing about such
"extreme last-ditch optimization tricks" is of very doubtful value (and
I think I'm qualified to say that, since I _do_ know many of them...:-).
There ARE important performance things to know about Python, but those
worth a few nanoseconds don't matter much.


Alex


From bj_666 at gmx.net  Mon Oct 22 03:02:05 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 07:02:05 GMT
Subject: a question about decorator
References: <mailman.307.1193035067.13605.python-list@python.org>
Message-ID: <5o307dFktnthU2@mid.uni-berlin.de>

On Mon, 22 Oct 2007 14:37:36 +0800, kyo guan wrote:

> def A():
> 	print 'warp in A'
> 	def why(self, *arg, **kw):
> 		print 'in A'
> 		print self
> 		print arg
> 		print kw
> 		#self(*arg, **kw)
> 	
> 	return why
> 	
> class T(object):
> 	@A()
> 	def test(g, out):
> 		print 'in test', out
> 
> it will out put:
> 
> warp in A
> in A
> <function test at 0x00BF0C70>
> ()
> {}
> 
> the function why will be called, why? there is no code to call it.

There is: ``@A()``.  Parenthesis means *calling* `A`.  Then `A` returns
`why` and that is then used as decorator function, i.e. called with
`T.test` as argument.

Ciao,
	Marc 'BlackJack' Rintsch


From sudharsh at gmail.com  Sun Oct 21 07:21:50 2007
From: sudharsh at gmail.com (Sudharshan S)
Date: Sun, 21 Oct 2007 16:51:50 +0530
Subject: Visibility of symbols between extension modules
Message-ID: <1192965710.4525.16.camel@sup3rkiddo.einstein>

Hi all,
I have been learning to write extension modules using the C API that
python provides, and have hit a minor roadblock that is turning out to
be major headache.
My project essentially is organized as follows,

                 foo
                  |
   ---------------------------------
   |              |                |
  bar            _foo             baz

_foo basically does some init stuff, nothing much. Thats where the
problem starts. The "handler" variable which is initialized in _foo
isn't visible to others. One solution that worked was calling the
initializing function in each of the module's PyMODINIT_FUNC. Debugging
through the interpreter I found out the it loads all the .so's and
executes PyMODINIT_FUNCs. But by doing so, the routine to initialize the
handle gets executed three times, something which i find to be sort of
unclean. 
The definition of the variable is included in a header and the sources
of the other modules include this master header, So I do have that
variable in scope, but its not initialized. _foo does the job of
declaring that variable.
I did my share of RTFM and found CObjects as a potential alternative.
But I feel its use rather complicated for a single variable that goes
out of scope. Is there any other way to solve this, or is my approach
itself borked =(?, What am I missing?

Thanks for your help
-- 
Sudharshan S
http://www.sudharsh.wordpress.com



From nagle at animats.com  Wed Oct 31 10:53:01 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 31 Oct 2007 07:53:01 -0700
Subject: Python bug tracker now secret?
Message-ID: <472896CD.3060201@animats.com>

I'm now getting messages like this from the Python bug tracker on
SourceForge:

  Artifact: This Artifact Has Been Made Private. Only Group Members Can
  View  Private ArtifactTypes.

I'm being denied access to bug reports I submitted, such as

https://sourceforge.net/tracker/?func=detail&aid=1651995&group_id=5470&atid=105470

This is only happening for Python bugs; bugs in non-Python areas are still
accessable.  So it's not a general SourceForge bug.

Is this a dumb policy change or a dumb administrator action?

					John Nagle


From alan.franzoni_invalid at geemail.invalid  Mon Oct 29 17:29:10 2007
From: alan.franzoni_invalid at geemail.invalid (Alan Franzoni)
Date: Mon, 29 Oct 2007 22:29:10 +0100
Subject: interesting threading result..
References: <1193674081.798831.24860@z9g2000hsf.googlegroups.com>
Message-ID: <w9clal7c9atn.q1ro3zyvvbs4.dlg@40tude.net>

Il Mon, 29 Oct 2007 09:08:01 -0700, Abandoned ha scritto:

> I'm sorry my bad english.
> King regards..

You must have messed up with something. You didn't post a working snippet
in first place, so you should do it now. I suppose you're working with some
editor or IDE which mantains the very same instance of a python interpreter
in memory; you probably have done something like 

end.append(current)

at a certain point in your tests.

I converted your pseudocode to python like that:

import threading

class GetData(threading.Thread):
   def __init__(self, name):
      threading.Thread.__init__(self)
      self.name = name

   def run(self):
        self.data={2:3, 3:4}

nlist = []
current = GetData("a")
nlist.append(current)
current.start()
end=[]
dd=nlist[0]
dd.join()
result=dd.data
print result
end.append(result)
print end

and I just get the result I would expect:

{2: 3, 3: 4}
[{2: 3, 3: 4}]


-- 
Alan Franzoni <alan.franzoni.xyz at gmail.com>
-
Togli .xyz dalla mia email per contattarmi.
Remove .xyz from my address in order to contact me.
-
GPG Key Fingerprint (Key ID = FE068F3E):
5C77 9DC3 BD5B 3A28 E7BC 921A 0255 42AA FE06 8F3E 


From george.sakkis at gmail.com  Wed Oct 10 16:50:41 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 10 Oct 2007 20:50:41 -0000
Subject: for loop question
In-Reply-To: <mailman.38.1192046903.927.python-list@python.org>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
Message-ID: <1192049441.498423.200770@57g2000hsv.googlegroups.com>

On Oct 10, 4:12 pm, Tim Chase <python.l... at tim.thechases.com> wrote:

> > test = u"Hello World"
>
> > for cur,next in test:
> >     print cur,next
>
> > Ideally, this would output:
>
> > 'H', 'e'
> > 'e', 'l'
> > 'l', 'l'
> > 'l', 'o'
> > etc...
>
> > Of course, the for loop above isn't valid at all. I am just giving an
> > example of what I'm trying to accomplish. Anyone know how I can achieve the
> > goal in the example above? Thanks.
>
> A "works-for-me":
>
>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
>  >>> for a,b in pairs:
> ...     print a,b
> ...
> H e
> e l
> l l
> l o
> o
>    w
> w o
> o r
> r l
> l d
>  >>>
>
> -tkc

Or generalized for arbitrary iterables, number of items at a time,
combination function and stopping criterion:

from itertools import islice, takewhile, repeat

def taking(iterable, n, combine=tuple, pred=bool):
    iterable = iter(iterable)
    return takewhile(pred, (combine(islice(iterable,n)) for _ in
repeat(0)))

>>> for p in taking(test,2): print p

(u'H', u'e')
(u'l', u'l')
(u'o', u' ')
(u'W', u'o')
(u'r', u'l')
(u'd',)

>>> for p in taking(test,2, combine=''.join): print p

He
ll
o
Wo
rl
d


George



From besturk at gmail.com  Thu Oct  4 15:29:56 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 04 Oct 2007 19:29:56 -0000
Subject: Boolean parser..
Message-ID: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>

Hi..
I try a boolean parser in python since 1 weak.. But i can't do this
because this is very complicated :(
Do you know any blooean parser script in python or how do i write a
boolean parser ?
example query: ((google or yahoo) or (live msn)) not web
I'm sorry my bad english.
King Regards..



From usenet at bitblocks.com  Tue Oct  9 03:15:19 2007
From: usenet at bitblocks.com (Bakul Shah)
Date: Tue, 09 Oct 2007 00:15:19 -0700
Subject: The fundamental concept of continuations
In-Reply-To: <1191911604.169846.244430@r29g2000hsg.googlegroups.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1aa6$0$79886$742ec2ed@news.sonic.net>
	<1191911604.169846.244430@r29g2000hsg.googlegroups.com>
Message-ID: <470b2a87$0$79882$742ec2ed@news.sonic.net>

gnuist006 at gmail.com wrote:
> On Oct 8, 11:07 pm, Bakul Shah <use... at bitblocks.com> wrote:
	...
>> You might like this one:
>>
>> http://www.intertwingly.net/blog/2005/04/13/Continuations-for-Curmudg...
> 
> thanks for the link but can you plz upload the paper so we can also
> get it.

You will have to get it yourself or explain why this is an
impossibility for you.


From goon12 at gmail.com  Wed Oct 17 09:53:26 2007
From: goon12 at gmail.com (Joe Riopel)
Date: Wed, 17 Oct 2007 09:53:26 -0400
Subject: Best Python Linux distribution
In-Reply-To: <6a2ccd190710170652i62cc6541ie5e69ce7fc8dcb03@mail.gmail.com>
References: <47160015.3070404@muzz.co.uk>
	<6a2ccd190710170652i62cc6541ie5e69ce7fc8dcb03@mail.gmail.com>
Message-ID: <6a2ccd190710170653k39f40edeieaaa3b048b4e8cdb@mail.gmail.com>

On 10/17/07, Joe Riopel <goon12 at gmail.com> wrote:
> IDLE and Python came installed on Slackware 12, I am not 100% sure
> about previous versions.


Also, I am sure a lot of it (with most distributions)  depends on the
packages you select during the  installation.


From kschutte at csail.mit.edu  Wed Oct 17 10:00:02 2007
From: kschutte at csail.mit.edu (Ken Schutte)
Date: Wed, 17 Oct 2007 10:00:02 -0400
Subject: negative base raised to fractional exponent
In-Reply-To: <1192622126.725230.136570@i13g2000prf.googlegroups.com>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>	<mailman.104.1192587133.13605.python-list@python.org>
	<1192622126.725230.136570@i13g2000prf.googlegroups.com>
Message-ID: <47161562.2020706@csail.mit.edu>

schaefer.mp at gmail.com wrote:
> On Oct 17, 4:05 am, Ken Schutte <kschu... at csail.mit.edu> wrote:
>> schaefer... at gmail.com wrote:
>>> Does anyone know of an approximation to raising a negative base to a
>>> fractional exponent? For example, (-3)^-4.11111 since this cannot be
>>> computed without using imaginary numbers. Any help is appreciated.
>> As others have said, you can use Python's complex numbers (just write -3
>> as -3+0j).  If for some reason you don't want to, you can do it all with
>> reals using Euler's formula,
>>
>> (-3)^-4.11111  =  (-1)^-4.11111  *  3^-4.11111
>> =
>> e^(j*pi*-4.11111)  *  3^-4.11111
>> =
>> (cos(pi*-4.11111) + j*sin(pi*-4.11111)) * 3^-4.11111
>>
>> in Python:
>>
>>  >>> import math
>>  >>> real_part = (3**-4.11111) * math.cos(-4.11111 * math.pi)
>>  >>> imaj_part = (3**-4.11111) * math.sin(-4.11111 * math.pi)
>>  >>> (real_part,imaj_part)
>> (0.01026806021211755, -0.0037372276904401318)
>>
>> Ken
> 
> Thank you for this. Now I need to somehow express this as a real
> number. For example, I can transform the real and imaginary parts into
> a polar coordinate giving me the value I want:
> 
> z = sqrt( real_part**2 + imaj_part**2 )
> 
> but this is an absolute terms. How does one determine the correct sign
> for this value?
> 

This is a complex number with non-zero imaginary part - there is no way 
to "express it as a real number".  Depending what you are trying to do, 
you may want the magnitude, z, which is by definition always positive. 
Or, maybe you just want to take real_part (which can be positive or 
negative).  Taking just the real part is the "closest" real number, in 
some sense.




From lasses_weil at klapptsowieso.net  Thu Oct  4 11:30:06 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 04 Oct 2007 17:30:06 +0200
Subject: racism kontrol
In-Reply-To: <mailman.1496.1191488830.2658.python-list@python.org>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net><mailman.1481.1191444294.2658.python-list@python.org>	<47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
	<mailman.1496.1191488830.2658.python-list@python.org>
Message-ID: <470506fe$0$4518$9b4e6d93@newsspool3.arcor-online.net>

Hendrik van Rooyen wrote:
>  "Wildemar Wildenburger" <lasse....eso.net> wrote:
> 
>> (By the way: Accusing a German of racism is almost too easy an insult. 
>> Not that I had taken any, just saying.)
> 
> I always thought that it would be insulting to a German if you accused
> him or her of not being a racist...
> 
Very funny, Herr Dutsh-Mann. Dude, hailing from South Africa with a 
Dutch name, I'd be careful with the word racist. That of course being 
based on the fact that in South Africa the term never had relevance and 
thus meaning. Hence I understand that you probably have as much 
understanding of the term "racism", as we have of "a welcome Jew". Or, 
for that matter, a "a Dutchman that is pleasant to listen to". Burn! ;)

Sidenote: Its funny that everybody calls the Dutch "Dutch" (when 
speaking English), which pretty much is the word "deutsch", which, guess 
what, means "German" (cf. Pennsylvania Dutch). That has always baffled 
me --- do Dutch people refer to themselves as "Dutch" when speaking 
dutch? The term for "Dutch" is "Nederlands" or "Hollands", isn't it?

/W


From carsten at uniqsys.com  Mon Oct  1 13:41:15 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 13:41:15 -0400
Subject: Combine two dictionary...
In-Reply-To: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
Message-ID: <1191260475.3393.59.camel@dot.uniqsys.com>

On Mon, 2007-10-01 at 10:24 -0700, Abandoned wrote:
> Hi..
> dict1={1: 4,  3: 5}... and 2 millions element
> dict2={3: 3,  8: 6}... and 3 millions element
> 
> I want to combine dict1 and dict2 and i don't want to use FOR because
> i need to performance.

You'll have to be a bit more precise here about how and where you want
to "combine". Should the result be a new dictionary or should it replace
one of dict1 or dict2? You're also not saying how you want conflicts
between dict1 and dict2 should be resolved. For example, both dict1 and
dict2 say something about the key 3. One says 5, the other says 3.
Should the combined dict say 3 or 5 or (3,5) or maybe even 4?

Also, based on your earlier posts from today, I'm wondering if those
dicts come from executing SQL queries. If so, you might want to consider
combining the results in SQL (using a UNION query) instead of combining
them in Python.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From ptmcg at austin.rr.com  Tue Oct 16 00:10:24 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Mon, 15 Oct 2007 21:10:24 -0700
Subject: Simple Text Processing Help
In-Reply-To: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
Message-ID: <1192507824.273262.122970@v29g2000prd.googlegroups.com>

On Oct 14, 8:48?am, patrick.wa... at gmail.com wrote:
> Hi all,
>
> I started Python just a little while ago and I am stuck on something
> that is really simple, but I just can't figure out.
>
> Essentially I need to take a text document with some chemical
> information in Czech and organize it into another text file. ?The
> information is always EINECS number, CAS, chemical name, and formula
> in tables. ?I need to organize them into lines with | in between. ?So
> it goes from:
>
> 200-763-1 ? ? ? ? ? ? ? ? ? ? 71-73-8
> n?trium-tiopent?l ? ? ? ? ? C11H18N2O2S.Na ? ? ? ? ? to:
>
> 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
>
> but if I have a chemical like: kyselina mo?ov?
>
> I get:
> 200-720-7|69-93-2|kyselina|mo?ov?
> |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
>
> and then it is all off.

Pyparsing might be overkill for this example, but it is a good sample
for a demo.  If you end up doing lots of data extraction like this,
pyparsing is a useful tool.  In pyparsing, you define expressions
using pyparsing classes and built-in strings, then use the constructed
pyparsing expression to parse the data (using parseString, scanString,
searchString, or transformString).  In this example, searchString is
the easiest to use.  After the parsing is done, the parsed fields are
returned in a ParseResults object, which has some list and some dict
style behavior.  I've given each field a name based on your post, so
that you can read the tokens right out of the results as if they were
attributes of an object.  This example emits your '|' delimited data,
but the commented lines show how you could access the individually
parsed fields, too.

Learn more about pyparsing at http://pyparsing.wikispaces.com/ .

-- Paul


# -*- coding: iso-8859-15 -*-

data = """200-720-7        69-93-2
kyselina mocov?      C5H4N4O3


200-001-8       50-00-0
formaldehyd      CH2O


200-002-3
50-01-1
guanid?nium-chlorid      CH5N3.ClH

"""

from pyparsing import Word, nums,OneOrMore,alphas,alphas8bit

# define expressions for each part in the input data

# a numeric id starts with a number, and is followed by
# any number of numbers or '-'s
numericId = Word(nums, nums+"-")

# a chemical name is one or more words, each made up of
# alphas (including 8-bit alphas) or '-'s
chemName = OneOrMore(Word(alphas.lower()+alphas8bit.lower()+"-"))

# when returning the chemical name, rejoin the separate
# words into a single string, with spaces
chemName.setParseAction(lambda t:" ".join(t))

# a chemical formula is a 'word' starting with an uppercase
# alpha, followed by uppercase alphas or numbers
chemFormula = Word(alphas.upper(), alphas.upper()+nums)

# put all expressions into overall form, and attach field names
entry = numericId("EINECS") + \
        numericId("CAS") + \
        chemName("name") + \
        chemFormula("formula")

# search through input data, and print out retrieved data
for chemData in entry.searchString(data):
    print "%(EINECS)s|%(CAS)s|%(name)s|%(formula)s" % chemData
    # or print each field by itself
    # print chemData.EINECS
    # print chemData.CAS
    # print chemData.name
    # print chemData.formula
    # print


prints:
200-720-7|69-93-2|kyselina mocov?|C5H4N4O3
200-001-8|50-00-0|formaldehyd|CH2O
200-002-3|50-01-1|guanid?nium-chlorid|CH5N3



From jake.mcknight at gmail.com  Mon Oct 29 07:47:45 2007
From: jake.mcknight at gmail.com (Jake McKnight)
Date: Mon, 29 Oct 2007 04:47:45 -0700
Subject: problem opening html file with webbrowser.open
In-Reply-To: <4725CF1A.7030705@web.de>
References: <mailman.572.1193654693.13605.python-list@python.org>
	<4725CF1A.7030705@web.de>
Message-ID: <5a9e110710290447t6d44816bwa1605f83271dbbee@mail.gmail.com>

> Maybe your browser is not in the executable path? Try passing the PATH
> environment variable to the Python interpreter and make sure it contains
the
> directory where your browser is installed.

Clearly the browser is in the path, because it opens.  It just fails to open
the file supplied by the script.

> but my main issue is that when I use the
> webbrowser.open("file:///home/myname/report.html"), webbroser opens
> but the page does not come up.

I just tested this in both Windows (Vista) and Linux (Kubuntu 7.10 and
Slackware 12) without any problems.  Try it from the interpreter; if it's
actually executing successfully, you should see something that looks like
this:

>>> import webbrowser
>>> webbrowser.open("file:///home/user/path/to/file/test.html")
True
>>>


-- 
Jake McKnight
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/fff32301/attachment.html>

From peter.mosley at talk21.com  Sat Oct 27 12:25:50 2007
From: peter.mosley at talk21.com (peter)
Date: Sat, 27 Oct 2007 09:25:50 -0700
Subject: Alarming message when running Python code
Message-ID: <1193502350.544562.261340@k79g2000hse.googlegroups.com>

I'm not sure if this query should be directed to comp.lang.python or
comp.os.linux.misc so I intend to post it to both with apologies if
it's inappropriate on either.

I have a small python utility which I wrote myself and which crawls
through a directory comparing all possible pairs of files.  Under
Windows it works fine, while the same code under Linux (Fedora Core 3)
works for a while then starts continuously throwing up the following
message

Message from syslog at localhost at [date/time]
localhost kernel: CPU1: Temperature above threshold

While the code is continues to work, it is greatly slowed by these
constant messages, and of ourse I am left wondering if my computer is
about to explode!

Is it really true that the code causes overheating under Linux and not
under Windows?  Or does Windows ignore the problem (and so am I
risking damage by running the code)? Or are the Linux messages
spurious, and if so how can I suppress them and ensure they do not
slow the running of the code?

Grateful for any help - preferably not too technical.

Peter



From http  Sat Oct 27 02:06:52 2007
From: http (Paul Rubin)
Date: 26 Oct 2007 23:06:52 -0700
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<mailman.492.1193441400.13605.python-list@python.org>
	<5og204Fmh2htU2@mid.uni-berlin.de>
Message-ID: <7xr6jh1477.fsf@ruckus.brouhaha.com>

Marc 'BlackJack' Rintsch <bj_666 at gmx.net> writes:
> >>>> assert 0b1 is 0x1
> That this doesn't raise `AssertionError` is an implementation detail. 
> It's not guaranteed the two objects are really the same.

I think Ben is getting at 0b1 and 0x1 being the same type, while the
proposed 0d1 is a different type.  I don't see anything wrong with 1d.
We already have 1j and I don't think that's going away in 3.0.


From sjmachin at lexicon.net  Wed Oct 10 06:42:15 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 03:42:15 -0700
Subject: struct.unpack less than 1 byte
In-Reply-To: <mailman.13.1192011330.927.python-list@python.org>
References: <1192010223.490715.205380@57g2000hsv.googlegroups.com>
	<mailman.13.1192011330.927.python-list@python.org>
Message-ID: <1192012935.289738.36870@o3g2000hsb.googlegroups.com>

On Oct 10, 8:15 pm, "Guilherme Polo" <ggp... at gmail.com> wrote:
> 2007/10/10, cprogrammer <cprogram... at gmail.com>:
> > i need to read from a file a struct like this [1byte, 12bits, 12bits]
> > reading 1 byte or more is not a problem ... but the 12 bits values
> > are ...
>
> 12bits, 12bits == 3 byes

and 8 + 12 + 12 = 32 :-)

Assuming little-endianess and that all 3 items are unsigned:

>>> import struct
>>> bytes = "\x21\x43\xba\xdc"
>>> i32 = struct.unpack("<I", bytes)[0]
>>> hex(i32)
'0xdcba4321L'
>>> fields = map(int, (i32 & 0xff, (i32 >> 8) & 0xfff, i32 >> 20))
>>> fields
[33, 2627, 3531]
>>> map(hex, fields)
['0x21', '0xa43', '0xdcb']
>>>



From richmoore44 at gmail.com  Fri Oct  5 08:17:41 2007
From: richmoore44 at gmail.com (richmoore44 at gmail.com)
Date: Fri, 05 Oct 2007 12:17:41 -0000
Subject: Python and SSL
In-Reply-To: <7MgNi.55277$Um6.46091@newssvr12.news.prodigy.net>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
	<1191420037.564584.103300@50g2000hsm.googlegroups.com>
	<877im4xd0f.fsf@pobox.com>
	<1191523844.528308.98180@y42g2000hsy.googlegroups.com>
	<7MgNi.55277$Um6.46091@newssvr12.news.prodigy.net>
Message-ID: <1191586661.148994.42830@o80g2000hse.googlegroups.com>

On Oct 5, 2:50 am, John Nagle <na... at animats.com> wrote:
> Johny wrote:
> > Martin and John,
> > Thank you both for your replies
> >  Must I  have OpenSSL imported in my Python program?
> > So far I have been using only SSL  support.
> > Built-in SSL support works OK if I connect from my Python program
> > directly to SSL server ( but not via proxy).
> > L.
>
>      SSL isn't SUPPOSED to work through proxies.  That's the whole point of
> SSL - to prevent somebody in the middle from tapping into the connection.
> Look up "man in the middle attack".

I'm afraid this is complete rubbish - using a proxy with SSL is fine.
The only
issue is that the built in python SSL support doesn't work with
proxies. There
are a number of ways of adding support though eg.
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/456195
One thing to note is that python's built in SSL support does not
validate the
server certicate and is therefore vulnerable to MITM attacks
irrespective
of whether a proxy is in use or not. If you want real security then
you need
to use something like PyOpenSSL or M2Crypto and a certificate store
with your
root CAs.

Rich.



From istvan.albert at gmail.com  Tue Oct  9 15:35:56 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Tue, 09 Oct 2007 19:35:56 -0000
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191935665.284553.110020@r29g2000hsg.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
Message-ID: <1191958556.735855.199180@22g2000hsm.googlegroups.com>

On Oct 9, 9:14 am, aaron.watt... at gmail.com wrote:

> a great tradition of tounge-in-cheek package names, like
> "Cold fusion", for example.

Cold Fusion is a super cool name. Nobody will every think of it as
representing something odd or silly.

> too late now.  sorry again,

why would it be late? is the future of you own work not worth the time
it takes to rename it? Compared to all the other work it took ... it
is just a mere inconvenience.

All I can say please do yourself a favor rename it. Imagine yourself
in the position of someone who has no idea what the project is about
and try to imagine what kind of thoughts and feelings the name will
conjure. It matters a lot. It is a shame to put yourself at
disadvantage.

Anyway that's all I can say. FWIW the "Devil Framework" guys are
sticking to their name, I think this is something that feels too
personal, people who invent a name will have a hard time accepting
that it is bad.

i.




From silfheed at gmail.com  Thu Oct  4 18:15:38 2007
From: silfheed at gmail.com (Silfheed)
Date: Thu, 04 Oct 2007 22:15:38 -0000
Subject: PYTHONPATH, opensuse10.2, gtk not working
Message-ID: <1191536138.690185.59080@22g2000hsm.googlegroups.com>

Heyas

So I'm trying to do two things, install a little gnome taskbar applet
(timer-applet) that was written in python and experiment with writing
python gtk apps.  I've installed (through yast) gtk, gtk2, gtk2-devel,
python-gtk, python-gtk-devl, python-gtk-doc but I still cant get
python to import gtk.  I set PYTHONPATH = /usr/lib/python2.5/site-
packages/ and that got importing pygtk to work, but the little app I
downloaded wants to import gtk and I just cant figure out what I'm
supposed to set PYTHONPATH to in order to get `import gtk` to work.
Anyone know what I'm doing wrong or missing?

Thanks



From nils.lastein at gmail.com  Fri Oct 19 07:34:39 2007
From: nils.lastein at gmail.com (Nils)
Date: Fri, 19 Oct 2007 11:34:39 -0000
Subject: dynamic invoke
In-Reply-To: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
Message-ID: <1192793679.102637.274620@e9g2000prf.googlegroups.com>

On Oct 19, 12:39 pm, lukasz.... at gmail.com wrote:
> Hello,
>
> Is there any way (other then eval) to invoke a method by passing
> method name in a string.
> It's very simple in php:
> $oFoo = new Foo();
> $dynamiMethod = "bar";
> $oFoo->$dynamiMethod();
>
> Unfortunately I can't find a good solution to do the same thing in
> python. Does it have some build-in function to do it?
>
> Kind Regards,
>
> Lukasz.

 Use apply(): http://docs.python.org/lib/non-essential-built-in-funcs.html

Nils



From bj_666 at gmx.net  Mon Oct 22 14:23:10 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 18:23:10 GMT
Subject: Automatic Generation of Python Class Files
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
Message-ID: <5o484eFktnthU4@mid.uni-berlin.de>

On Mon, 22 Oct 2007 11:05:52 -0700, Sunburned Surveyor wrote:

> On Oct 22, 10:26 am, "Chris Mellon" <arka... at gmail.com> wrote:
>
> You wrote: " can't think of a single reason why you would ever want to
> do this,
> since your "list of method and property names" would be just as
> verbose as just typing the actual python code."
> 
> I don't think I understand how this would be the same amount of
> typing. Consider the following example that would generate a Monster
> class file from an input text file (I only did one property and method
> in generated class file.):

Really a "monster class".

> Contents of input text file:
> 
> [Name]
> Fire Breathing Dragon
> 
> [Properties]
> Strength
> Scariness
> Endurance
> 
> [Methods]
> eatMaiden argMaiden
> fightKnight argKnight
> 
> Generated Python Class File:
> 
> def class FireBreathingDragon:
> 
>    def getStrength(self):
>       """
>       Docstring goes here.
> 
>       @return
>       @rtype
>       """
>       return self.strength
> 
>    def setStrength(self, argStrength):
>       """
>       Docstring goes here.
> 
>       @param argStrength
>       @ptype
>       """
>       return self.strength
> 
>    def eatMaiden(self, argMaiden):
>       """
>       Docstring goes here.
> 
>       @param argMaiden
>       @ptype
>       """

Okay this could be written as:

class FireBreathingDragon(object):
    def __init__(self, strength):
        self.strength = strength
        self.scariness = scariness
        self.endurance = endurance

    def eat_maiden(self, maiden):
        pass

    def fight_knight(self knight):
        pass

Even with all the stuff from your input file it's shorter than your
generated class.

I left out the docs because having no docs is as valuable as your stubs if
not even better.  This way you at least see that there is no real docs and
tools like `pylint` can point out the missing docs.

There are editors with good template support for the small amount of
boilerplate that's left.

Just in case you want to defend the default getters and setters: read up
on properties, i.e. the `property()` function, and the discussions in this
group about Python not being Java.

Ciao,
	Marc 'BlackJack' Rintsch


From raviadapa1 at googlemail.com  Mon Oct 22 06:24:33 2007
From: raviadapa1 at googlemail.com (bigden007)
Date: Mon, 22 Oct 2007 03:24:33 -0700
Subject: if..else stmt
Message-ID: <1193048673.332023.67960@y27g2000pre.googlegroups.com>

Hi,
I have a if..else statement in my script. The statements all execute
fine, but the problem is , even if the IF part of the statement is
true, the else part executes as well. The verion of pythin i use 2.5
Any help is appreciatiated.

Regards

Big Den.



From heikki at osafoundation.org  Fri Oct  5 00:19:29 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Thu, 04 Oct 2007 21:19:29 -0700
Subject: ANN: Chandler Preview (0.7.0.1)
Message-ID: <atKdnQwug43OJpjanZ2dnUVZ_oCdnZ2d@comcast.com>

Open Source Applications Foundation (OSAF) released Chandler Preview
(0.7.0.1) on September 10, 2007.

Chandler is a Personal Information Management (PIM) client application
with innovative design and ambitious plans for sharing, extensibility
and cross-platform support. Chandler is written mainly in Python.

We now have public-beta quality releases of our products; we believe
them to be full featured enough and stable enough for daily use. Check
out a full overview of features (including screenshots and screencasts).
Download Chandler Desktop, create an account on Chandler Hub. Check out
the source. Get involved in the project, help us build a really great
1.0 release.

Chandler desktop adds a central dashboard for managing tasks, notes,
events, and messages to the basic calendar functionality found in the
0.6 release. You can share calendars, task lists, messages and notes in
collections that can hold whatever you choose to put in them, regardless
of data type. The performance has improved greatly, the application has
basic search functionality, and now there?s a way to to manage and
resolve conflicts on shared data. You can collaborate on individual
items via email with the ability to edit and update messages you?ve
already received or sent. Although Chandler Preview is not meant to
replace your email application, you can configure your IMAP account so
that Chandler can see some messages from your regular mail client.

Get it from http://chandlerproject.org/

-- 
  Heikki Toivonen


From mypythonmail at gmail.com  Tue Oct 16 03:45:28 2007
From: mypythonmail at gmail.com (mypythonmail)
Date: Tue, 16 Oct 2007 15:45:28 +0800
Subject: No subject
Message-ID: <200710161545262326787@gmail.com>






mypythonmail
2007-10-16
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/8590488e/attachment.html>

From thattommyhall at gmail.com  Sat Oct 27 13:10:13 2007
From: thattommyhall at gmail.com (thattommyhallll@gmail.com)
Date: Sat, 27 Oct 2007 17:10:13 -0000
Subject: xmpfilter-a-like for python (code annotation)
Message-ID: <1193505013.821461.149470@d55g2000hsg.googlegroups.com>

http://eigenclass.org/hiki/xmpfilter
looks cool , anything like this for python? any reason that we culd
not do simmilar ?



From python at hope.cz  Tue Oct 30 08:21:48 2007
From: python at hope.cz (Johny)
Date: Tue, 30 Oct 2007 05:21:48 -0700
Subject: Readline and record separator
Message-ID: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>

Is it possible to change record separator when using readline?
As far as I know readline reads characters until found '\n' and it is
the end of record for readline.
My problem is that my record consits several '\n' and when I use
readline it does NOT read the whole my record.
So If I could change '\n' as  a record separator for readline, it
would solve my problem.
Any idea?
Thank you
L.



From bj_666 at gmx.net  Tue Oct 16 03:15:50 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 07:15:50 GMT
Subject: PIL and getpixel()
References: <1192518356.021602.276860@y27g2000pre.googlegroups.com>
Message-ID: <5nj6p6FiilfrU1@mid.uni-berlin.de>

On Tue, 16 Oct 2007 07:05:56 +0000, devnew at gmail.com wrote:

> i am trying to get the pixel data using im.getpixel()
> i am getting a tuple like (152,118,106) for a pixel in a RGB jpeg
> image .
> what i really want is an integer value representing a pixel ,like waht
> i can get from java's BufferedImage.getRGB(x,y) ..
> 
> i am wondering if someone can advise me on how i can do this

Just pack the RGB values into an `int` by shifting and or-ing.  Untested:

red, green, blue = img.getpixel(x, y)
pixel_as_int = red << 16 | green << 8 | blue

Ciao,
	Marc 'BlackJack' Rintsch


From gneuner2/ at /comcast.net  Mon Oct 15 00:17:40 2007
From: gneuner2/ at /comcast.net (George Neuner)
Date: Mon, 15 Oct 2007 00:17:40 -0400
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<see-36543E.18592809102007@lust.ihug.co.nz>
	<feu6r7$ccu$1@lust.ihug.co.nz>
Message-ID: <5cq5h3t7vk34famfl4od79vrlul32p2iss@4ax.com>

On Mon, 15 Oct 2007 11:56:39 +1300, Lawrence D'Oliveiro
<ldo at geek-central.gen.new_zealand> wrote:

>In message <see-36543E.18592809102007 at lust.ihug.co.nz>, Barb Knox wrote:
>
>> Instead of function A returning to its caller, the
>> caller provides an additional argument (the "continuation") which is a
>> function B to be called by A with A's result(s).
>
>That's just a callback. I've been doing that in C code (and other
>similar-level languages) for years.

Callbacks are a form of continuation.  However, general continuations
such as those in Scheme, carry with them their execution context.
This allows them to used directly for things like user-space
threading.

George
--
for email reply remove "/" from address


From ccoal.mail at gmail.com  Sun Oct 28 10:27:14 2007
From: ccoal.mail at gmail.com (Calder Coalson)
Date: Sun, 28 Oct 2007 09:27:14 -0500
Subject: Return value from os.system() call
Message-ID: <826E2F28-35BA-4924-BC3E-6843B5DD8532@gmail.com>

I was searching for ways to get the return value from os.system()  
calls, when I came across this from 6 years ago.  I tried what was  
suggested in this thread, but
output = os.popen("/tmp/other").read()
returns
sh: line 1: /tmp/other: Permission denied

I'm relatively new to Python, hardly ever use the shell and am  
currently running Python 2.5.5 on Mac OS 10.4.10

Cameron Laird <claird at starbase.neosoft.com> wrote:
 > In article <98795o$kq8$0 at 216.39.151.169>, Donn Cave  <donn at  
oz.net> wrote:
 >>Quoth Damian Menscher <menscher+python at uiuc.edu>:
 >>| I'm new to Python (as in, my experience is essentially the  
tutorial),
 >>| but I've already come up with an interesting question:
 >>|
 >>| How do I get the return code from an os.system call?  I would have
 >>| expected I could do something like
 >>|
 >>| ---returncode---
 >>| #/bin/csh
 >>| echo do stuff
 >>| exit 3
 >>|
 >>| and then in my python program I could do
 >>|
 >>| print os.system('./returncode')
 >>|
 >>| But it prints out 768.  Not particularly useful, even after I  
recognize
 >>| the trick of dividing by 256 (byte-swapping going on?  No,  
because a
 >>| return code of 768 reports as 0).  Given that my real return codes
 >>| will be (possibly large) integers, this limitation will likely  
cause
 >>| some serious problems down the line.
 >>|
 >>| Even better would be a way of returning a string (the script I run
 >>| can be something other than csh, but it has to be a separate  
script).
 >>|
 >>| Ideas?  I'm trying to avoid writing the string out to a file and  
then
 >>| read the file back in to the python program....

 > Guys, guys; you are making it too hard on Mr. Menscher.  My guess
 > is that he'd appreciate being told that, if he creates /tmp/other
 > with contents
 >   #!/bin/sh
 >   echo "This is a string from an external process."
 > he can then have fun with
 >   import os
 >   print os.popen("/tmp/other").read()

Thank you much -- this solves my problem.  I'm sure I'll have more
questions in the near future, though....

Damian Menscher


From besturk at gmail.com  Sun Oct 28 04:03:08 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 28 Oct 2007 01:03:08 -0700
Subject: insert string problems..
In-Reply-To: <13i8fghnud4rg65@corp.supernews.com>
References: <1193556274.869444.28560@o80g2000hse.googlegroups.com>
	<13i8fghnud4rg65@corp.supernews.com>
Message-ID: <1193558588.590468.32520@k79g2000hse.googlegroups.com>

On Oct 28, 9:45 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Sun, 28 Oct 2007 00:24:34 -0700, Abandoned wrote:
> > Hi..
> > I want to insert some data to postgresql.. My insert code:
> > yer="019"
> > cursor.execute("INSERT INTO ids_%s (id) VALUES (%s)", (yer, id)) I don't
> > want to use % when the insert operation.
>
> > in this code give me this error:
> > psycopg2.ProgrammingError: syntax error at or near "'019'" LINE 1:
> > SELECT link_id from linkkeywords_'019'
>
> > if i do int(yer) , 019 change to 19 .. How can i do int yer string with
> > 0 ?
>
> Integers with a leading 0 are interpreted as base 8 (octal). You can't
> write 019, because there is no digit "9" in octal.
>
> Why do you need a leading zero?
>
> --
> Steven.
Thank you steven.
I must use 019 beacause my system algoritm in this way..
And what about second question ?



From bj_666 at gmx.net  Thu Oct 11 14:31:34 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 18:31:34 GMT
Subject: determining fully qualified package & class name
References: <mailman.100.1192126718.927.python-list@python.org>
Message-ID: <5n78g6Fghr61U8@mid.uni-berlin.de>

On Thu, 11 Oct 2007 11:18:33 -0700, patrimith wrote:

> I am used to the following with Java:
> 
> import some.package.MyClass;
> name = MyClass.class.getName();
> 
> The value for name will be "some.package.MyClass".
> 
> For Python, I find:
> 
> from some.package.myclass import MyClass
> name = MyClass.__name__
> 
> The value for  name will be "MyClass"
> 
> Is there a comparable way to get the fully qualified name (package, module,
> and class name) in Python?

Take a look at the `__module__` attribute of the class.

Ciao,
	Marc 'BlackJack' Rintsch


From stargaming at gmail.com  Wed Oct 10 10:00:40 2007
From: stargaming at gmail.com (Stargaming)
Date: 10 Oct 2007 14:00:40 GMT
Subject: struct.unpack less than 1 byte
References: <1192010223.490715.205380@57g2000hsv.googlegroups.com>
	<mailman.13.1192011330.927.python-list@python.org>
	<1192012935.289738.36870@o3g2000hsb.googlegroups.com>
Message-ID: <470cdb08$0$23900$9b622d9e@news.freenet.de>

On Wed, 10 Oct 2007 03:42:15 -0700, John Machin wrote:

> On Oct 10, 8:15 pm, "Guilherme Polo" <ggp... at gmail.com> wrote:
>> 2007/10/10, cprogrammer <cprogram... at gmail.com>:
>> > i need to read from a file a struct like this [1byte, 12bits, 12bits]
>> > reading 1 byte or more is not a problem ... but the 12 bits values
>> > are ...
>>
>> 12bits, 12bits == 3 byes
> 
> and 8 + 12 + 12 = 32 :-)
[snipped bitfiddling]

Or, if you're doing more of those parsing tasks (or just dislike bit 
shifting), you could have a look into `construct`_::

    >>> from construct import *
    >>> foo = BitStruct("foo", 
    ...     Octet("spam"), # synonym for BitField("spam", 8) 
    ...     BitField("ham", 12), 
    ...     BitField("eggs", 12)
    ... )
    >>> foo
    Buffered('foo')
    >>> foo.parse("\xff\xff\xff\xff")
    Container(eggs = 4095, ham = 4095, spam = 255)

Cheers,
Stargaming

.. _construct: http://construct.wikispaces.com/


From michele.simionato at gmail.com  Thu Oct 18 02:05:08 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Thu, 18 Oct 2007 06:05:08 -0000
Subject: Noob questions about Python
In-Reply-To: <1192658316.048082.212190@v23g2000prn.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
Message-ID: <1192687508.636842.49940@z24g2000prh.googlegroups.com>

On Oct 17, 5:58 pm, Ixiaus <parnel... at comcast.net> wrote:

> def bin2dec(val):
>     li = list(val)
>     li.reverse()
>     res = [int(li[x])*2**x for x in range(len(li))]
>     print sum(res)
>
> It basically does the same thing int(string, 2) does.
>
> Thank you for the responses!

BTW, here is the reverse function dec2bin, so that you can
bang your head on it for a while ;)

def baseN(number, N=2):
    """
    >>> baseN(9, 2)
    '1001'
    """
    assert 2 <= N <= 10
    assert isinstance(number, int) and number >= 0
    b = []
    while number:
        b.append(str(number % N))
        number /= N
    return ''.join(reversed(b))

       Michele Simionato



From bscrivener42 at gmail.com  Sat Oct 20 11:02:26 2007
From: bscrivener42 at gmail.com (BartlebyScrivener)
Date: Sat, 20 Oct 2007 15:02:26 -0000
Subject: pydoc script.py vs. pydoc scriptpy
Message-ID: <1192892546.754204.217640@q5g2000prf.googlegroups.com>

On Debian Etch, if ~/mypyscripts is in my bash PATH and also in
PYTHONPATH, I get the following pydoc behaviors. Maybe this is
intentional. I'm just checking to be sure I don't have something
misconfigured in my environment.

If I have two scripts or modules  in ~/mypyscripts: one script.py and
one scriptpy (no extension), and do:

$>pydoc script

I get the documentation strings for script.py.

However, if I do:

$>pydoc scriptpy

I get no doc strings, even if I am in the ~/mypyscripts directory,
error message:
"no Python documentation found for 'scriptpy'"

Instead I must do:

$>pydoc ~/mypyscripts/scriptpy

even though ~/mypyscripts is in both PATH and PYTHONPATH

Took me awhile to sort this out. Is this the way pydoc is supposed to
work?

thanks,

rpd



From nick at craig-wood.com  Fri Oct 12 06:30:13 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Fri, 12 Oct 2007 05:30:13 -0500
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
Message-ID: <slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>

Alexandre Badez <alexandre.badez at gmail.com> wrote:
>  On Oct 12, 10:13 am, "psaff... at googlemail.com"
> <psaff... at googlemail.com> wrote:
> > My question is if Tix is old hat, what is the GUI toolkit I *should*
> > be using for quick-n-dirty cross platform GUI development? I guess
> > this is tangentially related to:
> >
> > http://groups.google.com/group/comp.lang.python/browse_thread/thread/...
> 
>  Personnaly, I use PyQt simply because I prefere Qt to Gtk, witch is
>  much more integrated with all desktop than Gtk.
>  In fact, your application in Qt on Mac, Win or Linux look like a
>  native app.

I'd recommend wxPython over those becase

1) native look and feel on all platforms
2) doesn't require expensive licensing for non-commercial apps (QT)
3) Isn't a pain to install on windows (GTK)

That said, times change and 1-3 may have changed since I last looked
at it!

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From sunburned.surveyor at gmail.com  Mon Oct 22 14:45:23 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: Mon, 22 Oct 2007 11:45:23 -0700
Subject: Automatic Generation of Python Class Files
In-Reply-To: <ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
Message-ID: <1193078723.991609.36770@y27g2000pre.googlegroups.com>

On Oct 22, 11:43 am, Steven Bethard <steven.beth... at gmail.com> wrote:
> Sunburned Surveyor wrote:
> > Contents of input text file:
>
> > [Name]
> > Fire Breathing Dragon
>
> > [Properties]
> > Strength
> > Scariness
> > Endurance
>
> > [Methods]
> > eatMaiden argMaiden
> > fightKnight argKnight
>
> > Generated Python Class File:
>
> > def class FireBreathingDragon:
>
> >    def getStrength(self):
> >       """
> >       Docstring goes here.
>
> >       @return
> >       @rtype
> >       """
> >       return self.strength
>
> >    def setStrength(self, argStrength):
> >       """
> >       Docstring goes here.
>
> >       @param argStrength
> >       @ptype
> >       """
> >       return self.strength
>
> >    def eatMaiden(self, argMaiden):
> >       """
> >       Docstring goes here.
>
> >       @param argMaiden
> >       @ptype
> >       """
>
> This should instead generate::
>
> # Inherit from object. There's no reason to create old-style classes.
> class FireBreathingDragon(object):
>
>     # Python is not Java. You don't need getters and setters.
>     # Use public attributes. If you ever decide later that you
>     # need different attributes, you can always use property()
>     # to make your getters and setters look like public attributes
>     def __init__(self, stregth, scariness, endurance):
>         self.strength = strength
>         self.scariness = scariness
>         self.endurance = endurance
>
> STeVe- Hide quoted text -
>
> - Show quoted text -

Thank you for the advice Steve. I didn't know that I should inherit
from Object. I will change my existing Python code accordingly.

Scott Huey



From istvan.albert at gmail.com  Sun Oct  7 18:14:06 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Sun, 07 Oct 2007 22:14:06 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191774244.572607.259510@o3g2000hsb.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191771096.541915.247650@k79g2000hse.googlegroups.com>
	<1191774244.572607.259510@o3g2000hsb.googlegroups.com>
Message-ID: <1191795246.297622.88170@y42g2000hsy.googlegroups.com>

On Oct 7, 12:24 pm, Michele Simionato <michele.simion... at gmail.com>
wrote:

> Here we disagree: I think that a programmer should know what he
> is using.

My point was that they should not *need* to know. Too much information
can be detrimental.

> > Where is the session data stored: in memory, files, database and so
> > on.
>
> Of course Beaker has all these features

Well their main page does not say anything about database based
storage:

http://beaker.groovie.org/

but then a Pylons wiki says it does, but I could not find any
information on out how to set up beaker with a database ... truth to
be told I was just curious of how they would go about integrating a
database and still keep it "pluggable".

Because it would either need to know about the way the server handles
the database connections (which makes it application specific) or it
has to create new database connections in which case it would be
duplicating the functionality leading to all kinds of headaches.

So there, even a simple requirement exposes the fallacy of building
anything complex out of "pluggable" components.

i.



From cjw at sympatico.ca  Wed Oct 24 18:06:05 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Wed, 24 Oct 2007 18:06:05 -0400
Subject: win32com.client documentation?
In-Reply-To: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
References: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
Message-ID: <471FC1CD.7060101@sympatico.ca>

Mark Morss wrote:
> I am a unix person, not new to Python, but new to Python programming
> on windows.  Does anyone know where to find documentation on
> win32com.client?  I have successfully installed this module and
> implemented some example code.  But a comprehensive explanation of the
> objects and methods available is nowhere to be found.  I have been
> able to find a somewhat out-of-date O'Reilly book, nothing more.
> 
> I want to be able to script the creation of Excel spreadsheets and
> Word documents, interract with Access data bases, and so forth.
> 
You might download  and install Mark 
Hammond's PythonWin.

Colin W.


From shriphanip at gmail.com  Wed Oct 10 06:19:05 2007
From: shriphanip at gmail.com (Shriphani)
Date: Wed, 10 Oct 2007 10:19:05 -0000
Subject: Last value of yield statement
Message-ID: <1192011545.384425.189530@o80g2000hse.googlegroups.com>

Hello all,

Let us say I have a function like this:

def efficientFiller(file):
        worthless_list = []
        pot_file = open(file,'r')
        pot_file_text = pot_file.readlines()
        for line in pot_file_text:
                if line.find("msgid") != -1:
                        message_id = shlex.split(line)[1]
                        if message_id in dictionary:
                                number = pot_file_text.index(line)
                                corresponding_crap =
dictionary.get(message_id)
                                final_string = 'msgstr' + " " + '"' +
corresponding_crap + '"' + '\n'
                                pot_file_text[number+1] = final_string
                                yield pot_file_text

efficient_filler =  efficientFiller("libexo-0.3.pot")
new_list = list(efficient_filler)
print new_list



I want to plainly get the last value the yield statement generates.
How can I go about doing this please?

Regards,
Shriphani Palakodety



From dale at out-think.no-spam.co.uk  Mon Oct 22 12:43:29 2007
From: dale at out-think.no-spam.co.uk (Dale Strickland-Clark)
Date: Mon, 22 Oct 2007 17:43:29 +0100
Subject: PDB scope problem
Message-ID: <Sq4Ti.2548$QP4.156@fe03.usenetserver.com>

While debugging with PDB earlier, I discovered this idiosyncracy:

(Pdb) lstValues
[[Decimal("1"), Decimal("47.0")]]
(Pdb) agg
[0, 1]
(Pdb) print list([sum(v[i] for i in range(len(agg))) for v in lstValues])
*** NameError: global name 'v' is not defined
(Pdb) 

However, the Python interpreter is happy with it if entered directly:

>>> lstValues
[[Decimal("1"), Decimal("47.0")]]
>>> agg = [0,1]
>>> print list([sum(v[i] for i in range(len(agg))) for v in lstValues])
[Decimal("48.0")]
>>> 

There seems to be some sort of scope problem in PDB.

-- 
Dale Strickland-Clark




From bdesth.quelquechose at free.quelquepart.fr  Sat Oct  6 03:05:54 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 06 Oct 2007 09:05:54 +0200
Subject: Static variable vs Class variable
In-Reply-To: <5n244rFf0dahU2@mid.uni-berlin.de>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n244rFf0dahU2@mid.uni-berlin.de>
Message-ID: <470bdd7b$0$15784$426a74cc@news.free.fr>

Marc 'BlackJack' Rintsch a ?crit :
> On Tue, 09 Oct 2007 18:08:34 +0000, Steven D'Aprano wrote:
> 
> 
>>>>>L = []
>>>>>id(L)
>>
>>3083496716L
>>
>>>>>L += [1]
>>>>>id(L)
>>
>>3083496716L
>>
>>It's the same L, not rebound at all.
> 
> It *is* rebound.  To the same object, but it *is* assigned to `L` and not
> just mutated in place.
> 
> In [107]: class A:
>    .....:     a = list()
>    .....:
> 
> In [108]: class B(A):
>    .....:     pass
>    .....:
> 
> In [109]: B.a += [42]
> 
> In [110]: A.a
> Out[110]: [42]
> 
> In [111]: B.a
> Out[111]: [42]
> 
> If it was just mutation then `B.a` would have triggered an `AttributeError`.

Nope.

 >>> class A:
...     l = []
...
 >>> class B(A): pass
...
 >>> A.l
[]
 >>> A.l += [1]
 >>> A.l
[1]
 >>> B.l
[1]
 >>>
 >>> B.l is A.l
True


And it is *not* rebound:

 >>> B.l += [2]
 >>> A.l
[1, 2]
 >>> B.l
[1, 2]
 >>> A.l is B.l
True
 >>>


From mullen at tsuda.ac.jp  Tue Oct 16 10:13:17 2007
From: mullen at tsuda.ac.jp (Tony Mullen)
Date: Tue, 16 Oct 2007 23:13:17 +0900
Subject: IDLE and opening with Python 2.5
Message-ID: <fb968fb40710160713y37abd6b1q3081fb558204c4d5@mail.gmail.com>

Well, for what it is worth, the solution to my problem is... just to
wait a while.  Even after re-starting the machine, I was still having
the problems I described.  Now I check it after a few hours of the
machine being asleep and lo and behold, everything is as advertised.
Seems to all be working fine.

>Is it some kind of mental oder physical barrier,

Overwork, perhaps?

Thx,

T


From robert.kern at gmail.com  Tue Oct 16 14:54:44 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 16 Oct 2007 13:54:44 -0500
Subject: numpy : efficient sum computations
In-Reply-To: <1192524629.077906.76280@t8g2000prg.googlegroups.com>
References: <1192524629.077906.76280@t8g2000prg.googlegroups.com>
Message-ID: <ff31dq$kdn$1@ger.gmane.org>

TG wrote:
> Hi there.
> 
> I want to do some intensive computations with numpy, and I'm
> struggling a bit to find myyyyy wayyyyyy.

The best place to ask numpy questions is on the numpy mailing list.

  http://www.scipy.org/Mailing_Lists

> Here is the problem :
> 
> m and d are two matrices :
> 
>> m.shape = (x,y,a,b)
>> d.shape = (a,b)
> 
> I want to return
>> i.shape = (x,y)
> with
>> i[x,y] = sum(m[x,y] * d)
> 
> I already found that
>> m[:,:] * d
> will give me a matrix of shape (x,y,a,b) containing the products.
> 
> Now I want to sum up on axis 2 and 3. If I do :
>> (m[:,:] * d).sum(axis=3).sum(axis=2)
> it seems like I get my result.
> 
> I'm wondering : is this syntax leading to efficient computation, or is
> there something better ?

That's about it. There's no need for the [:,:], though.

-- 
Robert Kern

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



From maxerickson at gmail.com  Thu Oct 11 12:34:19 2007
From: maxerickson at gmail.com (Max Erickson)
Date: Thu, 11 Oct 2007 16:34:19 +0000 (UTC)
Subject: matching a street address with regular expressions
References: <1192109138.907631.134890@r29g2000hsg.googlegroups.com>
	<470E287B.7040708@bristol.ac.uk>
Message-ID: <Xns99C67FC7F30D6maxericksongmailcom@80.91.229.5>

Andy Cheesman <Andy.cheesman at bristol.ac.uk> wrote:

> Check out kodos http://kodos.sourceforge.net/ for an interactive
> python regexp tester
> 
> Andy
> 

On systems with tkinter installed(So pretty much all Windows and lots 
and lots of Linux systems), the redemo.py script in the Tools/Scripts 
directory of the python installation will be a little quicker to get 
running.


max



From george.sakkis at gmail.com  Fri Oct 12 16:22:04 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Fri, 12 Oct 2007 20:22:04 -0000
Subject: [Pyro] ConnectionClosedError
Message-ID: <1192220524.837248.173230@i13g2000prf.googlegroups.com>

Didn't have much luck with this in the Pyro mailing list so I am
trying here, just in case. I have a Pyro server running as a daemon
process and occasionally (typically after several hours or days of
uptime) a ConnectionClosedError is raised when a client calls a remote
method. Both client and server run on the same machine, so I don't
think it's an actual network connectivity issue. The problem is that
once this happens, it is persistent; retrying to call a few times does
not work although the server process is still alive. The current
"solution" is to manually kill the server and restart it but obviously
this is not ideal. Is there a way to either prevent or at least
recover automatically the server when it hangs ?

George



From mal at egenix.com  Mon Oct  1 10:08:22 2007
From: mal at egenix.com (M.-A. Lemburg)
Date: Mon, 01 Oct 2007 16:08:22 +0200
Subject: Select as dictionary...
In-Reply-To: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
Message-ID: <4700FF56.9090401@egenix.com>

On 2007-10-01 15:32, Besturk.Net Admin wrote:
> Hi..
> I am using python with postgresql.
> And i have a query :
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> print links
> 
> and result
> [(1, 5), (2,5).......] (2 million result)
> 
> I want to see this result directly as a dictionary:
> 
> {1: 5, 2: 5 .....}
> 
> How do i select in this format ?

You can easily convert the above list to a dictionary:

d = dict(links)

-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Services directly from the Source  (#1, Oct 01 2007)
>>> Python/Zope Consulting and Support ...        http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ...             http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
________________________________________________________________________

:::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! ::::


   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611


From bedouglas at earthlink.net  Thu Oct 25 18:06:28 2007
From: bedouglas at earthlink.net (sam)
Date: Thu, 25 Oct 2007 15:06:28 -0700
Subject: Dual Python Installed Environments..
In-Reply-To: <5och8gFm7ku1U3@mid.uni-berlin.de>
Message-ID: <053401c81753$4b243e50$0301a8c0@tmesa.com>

Hey Diez...

So you're saying it's as simple as creating an env var, and setting it to
the python version...

ok.. (and yeah, we're talking fedora)

Thanks


-----Original Message-----
From: python-list-bounces+bedouglas=earthlink.net at python.org
[mailto:python-list-bounces+bedouglas=earthlink.net at python.org]On Behalf
Of Diez B. Roggisch
Sent: Thursday, October 25, 2007 2:48 PM
To: python-list at python.org
Subject: Re: Dual Python Installed Environments..


sam schrieb:
> Hi..
>
> I'm looking to install dual versions of python 2.3, 2.4 on the same box.
I'm
> trying to figure out if there's something I'm missing, some kind of
gotchas
> that I haven't seen.

THey shouldn't affect each other.

> I'm also trying to figure out how to allow my script to determine which
> version to use???

under unix - simple as this:

#!/usr/bin/env python<version>

Under Windows... well, I don't use that.

Diez
--
http://mail.python.org/mailman/listinfo/python-list



From rupole at hotmail.com  Sat Oct 27 14:43:35 2007
From: rupole at hotmail.com (Roger Upole)
Date: Sat, 27 Oct 2007 14:43:35 -0400
Subject: About Pywin32's invoke
References: <1193278445.657569.149940@y27g2000pre.googlegroups.com>
Message-ID: <1193510238_13367@sp12lax.superfeed.net>


"kernel1983" <kernel1983 at gmail.com> wrote in message news:1193278445.657569.149940 at y27g2000pre.googlegroups.com...
> By reading the doc of pywin32
>
> we can invoke COM like:
>
>    o = win32com.client.Dispatch("Excel.Application")
>
>
> but is it possible to invoke some GUID directly?
>

Yes, you can do something like
win32com.client.Dispatch('{00024500-0000-0000-C000-000000000046}')

>
> If COM was going to be invoked by python, must it support IDispatch?

Not neccessarily.  Pythoncom has compiled-in support for many interfaces
that don't inherit from IDispatch, but it requires that someone write code
to wrap the interface.

       Roger





----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From bj_666 at gmx.net  Thu Oct 25 17:34:05 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 25 Oct 2007 21:34:05 GMT
Subject: elementtree w/utf8
References: <ffr11p$unf$1@foggy.unx.sas.com>
Message-ID: <5ocgedFm1hl5U5@mid.uni-berlin.de>

On Thu, 25 Oct 2007 17:15:36 -0400, Tim Arnold wrote:

> Hi, I'm getting the by-now-familiar error:
> return codecs.charmap_decode(input,errors,decoding_map)
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa9' in position 
> 4615: ordinal not in range(128)
> 
> the html file I'm working with is in utf-8, I open it with codecs, try to 
> feed it to TidyHTMLTreeBuilder, but no luck. Here's my code:
> from elementtree import ElementTree as ET
> from elementtidy import TidyHTMLTreeBuilder
> 
>             fd = codecs.open(htmfile,encoding='utf-8')
>             tidyTree = 
> TidyHTMLTreeBuilder.TidyHTMLTreeBuilder(encoding='utf-8')
>             tidyTree.feed(fd.read())
>             self.tree = tidyTree.close()
>             fd.close()
> 
> what am I doing wrong? Thanks in advance.

You feed decoded data to `TidyHTMLTreeBuilder`.  As the `encoding`
argument suggests this class wants bytes not unicode.  Decoding twice
doesn't work.

Ciao,
	Marc 'BlackJack' Rintsch


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 29 16:13:12 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 21:13:12 +0100
Subject: SQLite3; weird error
In-Reply-To: <1193663581.028879.185480@v3g2000hsg.googlegroups.com>
References: <1193657924.375787.287740@o80g2000hse.googlegroups.com>
	<Xns99D87896DECEEduncanbooth@127.0.0.1>
	<1193663581.028879.185480@v3g2000hsg.googlegroups.com>
Message-ID: <47263f05$0$31442$426a34cc@news.free.fr>

TYR a ?crit :
> On Oct 29, 11:51 am, Duncan Booth <duncan.bo... at invalid.invalid>
> wrote:
> 
>>TYR <a.harrow... at gmail.com> wrote:
>>
>>>To do anything with it, you then need to create a cursor object by
>>>calling foo's method cursor (bar = foo.cursor).
>>
>>Perhaps this would work better if you actually try calling foo's method?
>>
>>        bar = foo.cursor()
>>
>>Without the parentheses all you are doing is assigning the method to a
>>variable, not calling it.
> 
> 
> Ah. Apologies for a silly question.
> 
Not so silly (considering you're somewhat new to Python, which seems 
obvious here) - some languages work otherwise.


From sami.jan at gmail.com  Sun Oct 21 15:59:29 2007
From: sami.jan at gmail.com (sami)
Date: Sun, 21 Oct 2007 19:59:29 -0000
Subject: using "request" variable in python web program
In-Reply-To: <1192924876.257468.27810@v29g2000prd.googlegroups.com>
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
	<1192924876.257468.27810@v29g2000prd.googlegroups.com>
Message-ID: <1192996769.692284.163300@v23g2000prn.googlegroups.com>

> However, it shouldn't be too bad to set Django up, really, especially
> if people have taken some time to explain something very close to what
> you want to do using Django. Moreover, there's a Google group (django-
> users) where you could ask general questions, and I imagine that
> people will be quite happy to help you out. But I can totally
> understand that creating databases and installing various packages
> seems somewhat peripheral to a task which could arguably be done using
> a CGI script (as far as I can see).
>
Thanks a ton Paul for the information. I am using CGI and my host
(nearlyfreespeech.net) does not have django hosting - and being mainly
a C/dekstop apps programmer I really don't want to learn the whole MVC
concept and its implementation (and quirks) in django - I want to use
abstractions only when I feel the need for them

Since a django user made pyfacebook, hopefully someone on the forum
will help out

Thanks again

Sami

> Paul
>
> P.S. I'm not too impressed by the lack of a common high-level Web API
> for Python, either. However, I've mostly ignored the discussions and
> stuck with my own API (WebStack) in the knowledge that if it doesn't
> work for me, at least I know how I might fix it.




From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 22 14:47:08 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 20:47:08 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193076352.576143.123260@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
Message-ID: <471cf0b0$0$24416$426a74cc@news.free.fr>

Sunburned Surveyor a ?crit :
> On Oct 22, 10:26 am, "Chris Mellon" <arka... at gmail.com> wrote:
> 
(snip)
>>I can't think of a single reason why you would ever want to do this,
>>since your "list of method and property names" would be just as
>>verbose as just typing the actual python code.
>>
>>Auto generated documentation stubs are considered harmful because they
>>take the place of real documentation.- Hide quoted text -
>>
(snip)
> 
> I don't think I understand how this would be the same amount of
> typing. 

For any well-designed, non-trivial code, my guess is that your solution 
will end up needed *at least* as much typing. Trivial code doesn't of 
course need any kind of code generation - doing it directly will be 
faster anyway. I won't of course talk about badly-designed code...

> Consider the following example that would generate a Monster
> class file from an input text file (I only did one property and method
> in generated class file.):
> 
> Contents of input text file:
> 
> [Name]
> Fire Breathing Dragon

Why do you put spaces in the name ?

> [Properties]
> Strength
> Scariness
> Endurance
> 
> [Methods]
> eatMaiden argMaiden
> fightKnight argKnight
> 
> Generated Python Class File:
> 
> def class FireBreathingDragon:

should be:

class FireBreathingDragon(object):

>    def getStrength(self):

You don't need these getters and setters. Python has support for 
computed attributes (look for 'property'), so until you need to control 
access, a plain attribute is all you need. IOW:

class FireBreathingDragon(object):
    def __init__(self, strength):
       self.strength = strength

    def eat_maiden(self, maiden):
       raise NotImplementedError

<ot>following pep08 (coding style) might be a good idea</ot>

Now if you're doing RPG, there will certainly be some mandatory 
attributes for all characters, both players and non-players - IOW, 
things like strength, endurance etc belong to a base 'Character' class. 
And I seriously doubt that methods like 'eat_maiden' or 'fight_knight' 
will survive the first design round... But anyway, a somewhat more 
realistic example would look like:

from MyRPG import NonPlayerCharacter, FireBreather

class FireBreathingDragon(NonPlayerCharacter, FireBreather):
   def __init__(self, *args, **kw):
     super(FireBreathingDragon, self).__init__(*args, **kw)
     # other class-specific code here, else might as well
     # just skip the initializer	

    def eat_maiden(self, maiden):
       # code here

    def fight_knight(self, knight):
       # code here

Sorry, but I don't see the benefit of your code-generator here.

>       """
>       Docstring goes here.
> 
>       @return
>       @rtype
>       """

I don't need nor want such a docstring in my code, thanks.

Don't take it bad - there are languages that requires so much 
boilerplate that without code-generators, productivity tends to drop 
near zero. But that's not the case with Python.


From besturk at gmail.com  Mon Oct  1 09:32:07 2007
From: besturk at gmail.com (Besturk.Net Admin)
Date: Mon, 01 Oct 2007 06:32:07 -0700
Subject: Select as dictionary...
Message-ID: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>

Hi..
I am using python with postgresql.
And i have a query :

aia.execute("SELECT id, w from list")
links=aia.fetchall()
print links

and result
[(1, 5), (2,5).......] (2 million result)

I want to see this result directly as a dictionary:

{1: 5, 2: 5 .....}

How do i select in this format ?

I'm sorry my bad english.

 King Regards...



From byte8bits at gmail.com  Fri Oct 12 16:59:14 2007
From: byte8bits at gmail.com (brad)
Date: Fri, 12 Oct 2007 16:59:14 -0400
Subject: test if email
In-Reply-To: <1192220077.109848.74740@e9g2000prf.googlegroups.com>
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
Message-ID: <feon78$m0k$2@solaris.cc.vt.edu>

kyosohma at gmail.com wrote:
> On Oct 12, 2:55 pm, Florian Lindner <Florian.Lind... at xgm.de> wrote:
>> Hello,
>> is there a function in the Python stdlib to test if a string is a valid
>> email address?

here's a Perl re example... I don't know whether to laugh or cry... 
don't try to replicate this in Python or you'll hurt yourself. :)

"... the only sure way to see if a supplied email address is genuine is 
to send an email to it and see if the user recieves it."

http://ex-parrot.com/~pdw/Mail-RFC822-Address.html


From chris.stromberger at gmail.com  Wed Oct 24 12:54:56 2007
From: chris.stromberger at gmail.com (chris)
Date: Wed, 24 Oct 2007 16:54:56 -0000
Subject: How to best send email to a low volume list?
Message-ID: <1193244896.747562.291580@y27g2000pre.googlegroups.com>

I need to maintain a list of subscribers to an email list for a
"newsletter" that will be sent via a web form probably once a month.
I anticipate low numbers--tens to maybe one hundred subscribers at the
most.  Just curious what the best way to code this is.  Should I just
loop through the addresses and send one-off emails to each, or is it
better to somehow send to every recipient in one shot?  One thing I
would like to avoid in the latter scenario is each recipient being
able to see the entire list of recipients.  Also don't want to trigger
any kind of spam thing on my web host by sending out too many emails.

Anyway, any tips appreciated.

Thanks,
Chris



From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 22:38:25 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 04:38:25 +0200
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <fe49qn$asr$2@lust.ihug.co.nz>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
	<fe49qn$asr$2@lust.ihug.co.nz>
Message-ID: <4706a46e$0$15745$426a34cc@news.free.fr>

Lawrence D'Oliveiro a ?crit :
> In message <1191510706.528876.261780 at 57g2000hsv.googlegroups.com>, Wojciech
> Gryc wrote:
> 
> 
>>I'm a seasoned Java programmer and quite a big fan of interfaces...
>>i.e. The idea that if I make a number of distinct classes that
>>implement interface X, I can pass them all as parameters to functions
>>or whatnot that require an X object.
> 
> 
> Why?
> 
> Interfaces are just a euphemism for multiple inheritance,

Java's 'interface' mechanism is mostly a (somewhat weak & dumb IMHO) 
mean to decouple (sub)typing from implementation. Given a declarative 
static type system and the restriction to single implementation 
inheritance, of course. IIRC, vb6 had *no* implementation inheritance at 
all - you had to do 'implement' it by yourself, using (manual of course) 
delegation...

Now multiple inheritence is clearly not the answer to the OP's question 
in a dynamically typed language, where subtyping is not bound to 
inheritance.


From deets at nospam.web.de  Wed Oct  3 08:05:30 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 03 Oct 2007 14:05:30 +0200
Subject: A total bullshit (was : A Must Read!!!)
In-Reply-To: <47037730$0$21878$426a74cc@news.free.fr>
References: <1191403384.456238.92870@22g2000hsm.googlegroups.com>
	<47037730$0$21878$426a74cc@news.free.fr>
Message-ID: <5mhetfFd78r2U3@mid.uni-berlin.de>

Bruno Desthuilliers schrieb:
> richard.james861 at gmail.com a ?crit :
>> I have found an excellent resource on Object Oriented Programming.
>>
>>
> (url snipped to protect the innocents)
> 
> Let's see:
> 
> "An object has methods, properties and events."
> 
> Hem...
> 
> "oriented programming probably existed before the concept of a class 
> came into being but today the concept of a class is essential to object 
> orientation."
> 
> Hem hem...
> 
> This is total bullshit.

"""
Polymorphism happens and we can?t avoid it despite its silly sounding 
name.  We might have a baseclass which represents a basic document and 
we might subclass this generate ?invoices?.  A different subclass might 
generate ?cheques?. They may both have a method called print but the 
implementation of ?print? could be entirely different for the two base 
classes even though the same name ?print? is used in each case.  That?s 
polymorphism
"""

Hilarious! I wasn't aware of the technical term "silly sounding name" ...

Diez


From gagsl-py2 at yahoo.com.ar  Wed Oct 17 23:58:42 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 00:58:42 -0300
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
Message-ID: <op.t0djz4rsx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 17 Oct 2007 18:03:56 -0300, Debajit Adhikary <debajit1 at gmail.com>  
escribi?:

> What in general is a good way to learn about little things like these?
> (I'm fairly new to the language)
>
> A google search for 'python list methods" did not turn up the +
> operator anywhere for me. Where could I find the official
> documentation for built in structures like the list?

Operators are hard to find... For the available list methods, see  
http://docs.python.org/lib/typesseq.html and  
http://docs.python.org/lib/typesseq-mutable.html
 From the Library Reference, you should read at least section 2 (Built-in  
Objects) and section 3 (Built-in types), and the remaining section titles  
so you know they exist at least.

-- 
Gabriel Genellina



From jelleferinga at gmail.com  Wed Oct 31 09:31:06 2007
From: jelleferinga at gmail.com (jelle)
Date: Wed, 31 Oct 2007 13:31:06 +0000 (UTC)
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
Message-ID: <loom.20071031T132748-928@post.gmane.org>

the subject pretty much says it all.
if I check a string for for a substring, and this substring isn't found, 
should't the .find method return 0 rather than -1?
this breaks the 

if check.find('something'):
    do(somethingElse)

idiom, which is a bit of a pity I think.

cheers,

-jelle



From lasses_weil at klapptsowieso.net  Sun Oct  7 10:24:35 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 16:24:35 +0200
Subject: Override 'and' and 'or'
In-Reply-To: <4708eb82$0$30379$9b4e6d93@newsspool4.arcor-online.net>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<4708eb82$0$30379$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <4708ec23$0$30379$9b4e6d93@newsspool4.arcor-online.net>

Wildemar Wildenburger wrote:
> [whate everyone else wrote :(]
> 
> /W

Dangit! 4th of 4.
Gotta type quicker.

/W


From deets at nospam.web.de  Thu Oct 11 10:43:55 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 16:43:55 +0200
Subject: Python module for making Quicktime or mpeg movies from images
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
Message-ID: <5n6r5bFfp4a6U1@mid.uni-berlin.de>

jeremito wrote:

> My Python script makes a bunch of images that I want to use as frames
> in a movie.  I've tried searching for a module that will take these
> images and put them together in a Quicktime or mpeg movie, but haven't
> found anything.  My images are currently pdfs, but I could make them
> into just about anything if needed.
> 
> Is there a module, or example of how to do this?

http://pymedia.org/

Diez


From andreas.tawn at ubisoft.com  Fri Oct 12 07:23:19 2007
From: andreas.tawn at ubisoft.com (Andreas Tawn)
Date: Fri, 12 Oct 2007 13:23:19 +0200
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <8AEDA5E3386EA742B8C24C95FF0C75800276933C@PDC-MAIL3.ubisoft.org>

> Hello,
> can I determine somehow if the iteration on a list of values 
> is the last
> iteration?
> 
> Example:
> 
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
> 
> that would print
> 
> 1
> 2
> 9

Something like:

myList = [1, 2, 3]
for i, j in enumerate(myList):
    if i == len(myList)-1:
        print j*j
    else:
        print j

Cheers,

Andreas Tawn
Lead Technical Artist
Ubisoft Reflections


From researchbase at gmail.com  Tue Oct 16 03:03:33 2007
From: researchbase at gmail.com (krishnakant Mane)
Date: Tue, 16 Oct 2007 12:33:33 +0530
Subject: confused on calculating date difference in days.
Message-ID: <f81479dd0710160003rca91177o3421376e4b18282b@mail.gmail.com>

hello,
I am strangely confused with a date calculation problem.
the point is that I want to calculate difference in two dates in days.
there are two aspects to this problem.
firstly, I can't get a way to convert a string like "1/2/2005" in a
genuan date object which is needed for calculation.
now once this is done I will create a another date object with
today = datetime.datetime.now()
and then see the difference between this today and the string that I
converted to date.
now in the first place I can't recall how I can convert a string to a date.
then now I don't know how to calculate difference in days between
today and the string converted date.
any help will be appreciated.
regards,
Krishnakant.


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 15:50:24 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 20:50:24 +0100
Subject: Readline and record separator
In-Reply-To: <1193748287.311630.74090@22g2000hsm.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
	<1193748287.311630.74090@22g2000hsm.googlegroups.com>
Message-ID: <47278b2d$0$29610$426a74cc@news.free.fr>

Jeff a ?crit :
> If it's a short file you could slurp the entire file and then split it
> however you like using regular expressions.

My my my...

> I'm not sure if you can alter it,

You can. But it hopefully won't alter your binary-compiled system libs. 
IOW : it's so (obviously) useless that no one even bothered doing 
anything to prevent you from altering it !-)

  but os.linesp
  os.line

> holds the value that
> is accessed when file.readlines() splits lines.  Conceivably, if it
> were set to 'FOO', 'FOO' would be used to determine the EOL string.

Hopefully not. Anyway, the answer is elsewhere (hint: import csv).



From robert.kern at gmail.com  Mon Oct  1 18:48:46 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 01 Oct 2007 17:48:46 -0500
Subject: where is pkg_resources (setuptools) looking for entry_points.txt
In-Reply-To: <1191275045.072010.215840@y42g2000hsy.googlegroups.com>
References: <1191275045.072010.215840@y42g2000hsy.googlegroups.com>
Message-ID: <fdrtgi$vl5$1@sea.gmane.org>

seb.haase at gmail.com wrote:
> Hi,
> I'm trying to use an egg packages (pyOpenGL)  as a "normal
> package" (by unzipping the egg into a directory).
> Generally this seems to work fine, except one init-step is missing.

The EGG-INFO/ directory in the zipped egg needs to be renamed to something
appropriate, in this case:

  PyOpenGL-3.0.0a6-py2.5.egg-info/

The documentation for such things is here:

  http://peak.telecommunity.com/DevCenter/PkgResources
  http://peak.telecommunity.com/DevCenter/setuptools
  http://peak.telecommunity.com/DevCenter/EasyInstall

and the mailing list for setuptools questions is the Distutils-SIG:

  http://mail.python.org/mailman/listinfo/distutils-sig/

-- 
Robert Kern

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



From chris.monsanto at gmail.com  Sat Oct 13 18:23:30 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Sat, 13 Oct 2007 15:23:30 -0700
Subject: unicodedata implementation - categories
In-Reply-To: <mailman.175.1192307538.927.python-list@python.org>
References: <mailman.175.1192307538.927.python-list@python.org>
Message-ID: <1192314210.569705.319650@e34g2000pro.googlegroups.com>

On Oct 13, 4:32 pm, James Abley <james.ab... at gmail.com> wrote:
> Hi,
>
> I'm trying to understand how CPython implements unicodedata, with a view to
> providing an implementation for Jython. This is a background, low priority
> thing for me, since I last posted to this list about it in February!
>
> Python 2.5.1 (r251:54863, May  2 2007, 16:56:35)
> [GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.>>> import unicodedata
> >>> c = unichr(0x10FFFF)
> >>> unicodedata.name(c)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ValueError: no such name>>> unicodedata.category(unichr(0x10FFFF))
>
> 'Cn'
>
> 0x10FFFF is not a valid codepoint in Unicode 4.1, which is the version of
> the Unicode standard that Python 2.5 supports.
>
> So I have a couple of questions:
>
> 1) Why doesn't the category method raise an Exception, like the name method
> does?
> 2) Given that the category method doesn't currently raise an Exception,
> please could someone explain how the category is calculated? I have tried to
> figure it out based on the CPython code, but I have thus far failed, and I
> would also prefer to have it explicitly defined, rather than mandating that
> a Jython (.NET, etc) implementation uses the same (possibly non-optimal for
> Java) data structures and algorithms.
>
> My background is Mathematics rather than pure Computer Science, so doubtless
> I still have some gaps in my education to be filled when it comes to data
> structures and algorithms and I would welcome the opportunity to fill some
> of those in. References to Knuth or some on-line reading would be much
> appreciated, to help me understand the CPython part.
>
> Cheers,
>
> James
> --
> View this message in context:http://www.nabble.com/unicodedata-implementation---categories-tf46194...
> Sent from the Python - python-list mailing list archive at Nabble.com.

Cn is the "Other, Not Assigned" category in Unicode. No characters in
Unicode have this property. I'm not sure why it doesn't raise an
Exception, but if category() returns Cn, then you know it's not a
valid character.



From wbrehaut at mcsnet.ca  Tue Oct  2 17:40:20 2007
From: wbrehaut at mcsnet.ca (Wayne Brehaut)
Date: Tue, 02 Oct 2007 15:40:20 -0600
Subject: readline() - problem
References: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
	<87fy0tsq2t.fsf@benfinney.id.au>
	<1191327201.138439.20290@22g2000hsm.googlegroups.com>
Message-ID: <cje5g3dh2vbqqdgkbvks0itgdhu680491q@4ax.com>

On Tue, 02 Oct 2007 12:13:21 -0000, piotr at kolodziejczyk.waw.pl wrote:

>On 2 Pa , 13:39, Ben Finney <bignose+hates-s... at benfinney.id.au>
>wrote:
>> pi... at kolodziejczyk.waw.pl writes:
>> > import string
>>
>> Why import 'string' if you're not using it?
>>
>> > f=open('/test/test.asc','r')
>> > o=open('/test/out.asc','w')
>> > for line in f:
>> >     s= f.readline()
>>
>> Your line object is already bound to the 'line' name in each
>> iteration. You need to use that, not attempt to read yet another line
>> each time.
>>
>
>Of course, it helped. Many thanks for all.

But be sure you note Wesley's point in teh following post:

If you want the 15th character your subscript must be 14, since
there's a 0th element?

wwwayne

>
>piotr


From bj_666 at gmx.net  Tue Oct 16 04:28:14 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 08:28:14 GMT
Subject: confused on calculating date difference in days.
References: <mailman.49.1192518819.13605.python-list@python.org>
	<5nj8b8FiilfrU3@mid.uni-berlin.de> <87odez4gz5.fsf@benfinney.id.au>
Message-ID: <5njb0uFiilfrU4@mid.uni-berlin.de>

On Tue, 16 Oct 2007 18:10:54 +1000, Ben Finney wrote:

> Marc 'BlackJack' Rintsch <bj_666 at gmx.net> writes:
> 
>> On Tue, 16 Oct 2007 12:33:33 +0530, krishnakant Mane wrote:
>> 
>> > firstly, I can't get a way to convert a string like "1/2/2005" in
>> > a genuan date object which is needed for calculation.
>> 
>> Why?  Split the string up, convert the parts to `int` and just
>> create a `datetime.date` object.
> 
> What, re-implement 'strptime' in every program that needs it? And then
> debug the result every time?

Yes.  Seems easier to me.  :-)

> Even if one doesn't have Python 2.5 or above, surely getting the
> string parsed into int values by the standard 'time.strptime' is
> better than re-implementing it every time.
> 
>> Maybe you should read the docs next time.  ;-)
> 
> Back at you.

Got me.  I didn't know that `datetime` has a `strptime` now.  I just
looked at `date`.

Ciao,
	Marc 'BlackJack' Rintsch


From stargaming at gmail.com  Mon Oct 22 11:21:45 2007
From: stargaming at gmail.com (Stargaming)
Date: 22 Oct 2007 15:21:45 GMT
Subject: pydoc script.py vs. pydoc scriptpy
References: <1192892546.754204.217640@q5g2000prf.googlegroups.com>
Message-ID: <471cc009$0$23931$9b622d9e@news.freenet.de>

On Sat, 20 Oct 2007 15:02:26 +0000, BartlebyScrivener wrote:

> On Debian Etch, if ~/mypyscripts is in my bash PATH and also in
> PYTHONPATH, I get the following pydoc behaviors. Maybe this is
> intentional. I'm just checking to be sure I don't have something
> misconfigured in my environment.
> 
> If I have two scripts or modules  in ~/mypyscripts: one script.py and
> one scriptpy (no extension), and do:
> 
> $>pydoc script
> 
> I get the documentation strings for script.py.
> 
> However, if I do:
> 
> $>pydoc scriptpy
> 
> I get no doc strings, even if I am in the ~/mypyscripts directory, error
> message:
> "no Python documentation found for 'scriptpy'"
> 
> Instead I must do:
> 
> $>pydoc ~/mypyscripts/scriptpy
> 
> even though ~/mypyscripts is in both PATH and PYTHONPATH
> 
> Took me awhile to sort this out. Is this the way pydoc is supposed to
> work?
> 
> thanks,
> 
> rpd

>From the pydoc documentation:

    The argument to pydoc can be the name of a function, 
    module, or package, or a dotted reference to a class, 
    method, or function within a module or module in a 
    package. If the argument to pydoc looks like a path 
    (that is, it contains the path separator for your 
    operating system, such as a slash in Unix), and refers 
    to an existing Python source file, then documentation 
    is produced for that file.

Since `script` is a valid module name in your case, referencing 
script.py, pydoc uses this file. `scriptpy` is no valid module name and 
thus, does not work.

HTH,
Stargaming


From janaki.parasuraman at gmail.com  Mon Oct  8 14:13:20 2007
From: janaki.parasuraman at gmail.com (janaki.parasuraman at gmail.com)
Date: Mon, 08 Oct 2007 11:13:20 -0700
Subject: HCL Technologies:Software Engineer/Senior software Engineer ..::
	JobMaguz Update ::..
Message-ID: <1191867200.100823.244360@k79g2000hse.googlegroups.com>

..:: Job Update from JobMaguz ::..

Today's Highlighted Job:
HCL Technologies:Software Engineer/Senior software Engineer
http://www.jobmaguz.com/viewFresherJobs.aspx?jobid=981&cycle=1

26 jobs posted today in JobMaguz

Jobs posted today:

Freshers Section
HCL Technologies:Software Engineer/Senior software Engineer
http://www.jobmaguz.com/viewFresherJobs.aspx?jobid=981&cycle=1

Willis Trinity recruits Freshers (ITES)
http://www.jobmaguz.com/viewFresherJobs.aspx?jobid=980&cycle=1

INTERNET PROTOCOL ENGG [Telecom Software] - ZTE Corporation
http://www.jobmaguz.com/viewFresherJobs.aspx?jobid=978&cycle=1

Plexus Microelectronics Pte Ltd
http://www.jobmaguz.com/viewFresherJobs.aspx?jobid=977&cycle=1

Saviance Technologies
http://www.jobmaguz.com/viewFresherJobs.aspx?jobid=975&cycle=1

More: www.jobmaguz.com/freshers.aspx


Experienced Section
Ansys Fluent India Pvt. Ltd
http://www.jobmaguz.com/viewExperiencedJobs.aspx?jobid=985&cycle=1

Keane:Support Professionals
http://www.jobmaguz.com/viewExperiencedJobs.aspx?jobid=984&cycle=1

 PTC Software India Pvt Ltd
http://www.jobmaguz.com/viewExperiencedJobs.aspx?jobid=982&cycle=1

Siyaram Silk Mills Ltd
http://www.jobmaguz.com/viewExperiencedJobs.aspx?jobid=979&cycle=1

i-flex Solutions - 13th Sept 2007 - Mumbai - Oracle Pl/SQL
http://www.jobmaguz.com/viewExperiencedJobs.aspx?jobid=965&cycle=1

More: www.jobmaguz.com/experienced.aspx


Referral Section
More: www.jobmaguz.com/referrals.aspx


Happy Job Hunting!!

..:: Team JobMaguz ::..

FOR REGULAR JOB UPDATES
------------------------------------------------------------------
Join our Orkut community
http://www.orkut.com/Community.aspx?cmm=29823377

Subscribe our fresher jobs' Feed
http://www.feedburner.com/fb/a/emailverifySubmit?feedId=1038318

Subscribe our experienced jobs' Feed
http://www.feedburner.com/fb/a/emailverifySubmit?feedId=1039530
------------------------------------------------------------------



From gagsl-py2 at yahoo.com.ar  Mon Oct 22 10:29:07 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 22 Oct 2007 11:29:07 -0300
Subject: Check File Change Every 10 Seconds
References: <27459.1491478079$1193048158@news.gmane.org>
Message-ID: <op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Mon, 22 Oct 2007 06:56:52 -0300, Robert Rawlins - Think Blue  
<robert.rawlins at thinkbluemedia.co.uk> escribi?:

> I've got a requirement to check a file for a change every 10 seconds or  
> so,
> and if the file has been modified since the last time I parsed its  
> content
> into the application then I need to parse it in again. However, I need  
> this
> process to not interrupt the rest of my application flow.

See this article by Tim Golden:
http://timgolden.me.uk/python/win32_how_do_i/watch_directory_for_changes.html

> What is the best way to handle this? Is there some form of file watcher
> module for python which can watch the file for me and then parse any  
> changes
> into the application memory? Or should I be spawning and unjoined thread
> which contains and infinite loop which checks a date/time the file was
> modified against an internal date/time variable for when the application
> last parsed the file into memory?

I would use a different thread waiting for notifications from  
ReadDirectoryChangesW (third option in the link above)
See http://msdn2.microsoft.com/en-us/library/aa365465.aspx for more info  
on ReadDirectoryChangesW

-- 
Gabriel Genellina



From tdwdotnet at gmail.com  Fri Oct 12 16:49:33 2007
From: tdwdotnet at gmail.com (Tim Williams)
Date: Fri, 12 Oct 2007 21:49:33 +0100
Subject: test if email
In-Reply-To: <feom4s$l0h$1@solaris.cc.vt.edu>
References: <feojgb$k16$01$1@news.t-online.com>
	<feom4s$l0h$1@solaris.cc.vt.edu>
Message-ID: <9afea2ac0710121349m7d2aff8ey9227206cafdb50d6@mail.gmail.com>

On 12/10/2007, brad <byte8bits at gmail.com> wrote:
> Florian Lindner wrote:
> > Hello,
> > is there a function in the Python stdlib to test if a string is a valid
> > email address?
>
> Nope, most any string with an @ in it could be a valid email addy. Send
> a message to the addy, if it doesn't bounce, then it's valid.

Invalid email doesn't always bounce, ( or the bounces may not always reach you )

:)

-- 

Tim Williams


From bj_666 at gmx.net  Sun Oct 28 09:21:24 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 28 Oct 2007 13:21:24 GMT
Subject: Which index can i use ?
References: <1193576419.825167.144400@50g2000hsm.googlegroups.com>
Message-ID: <5ojgmkFn2h71U1@mid.uni-berlin.de>

On Sun, 28 Oct 2007 06:00:19 -0700, Abandoned wrote:

> Hi..
> I want to do index in postgresql & python.
> My table:
> id(int) | id2(int) | w(int) | d(int)
> 
> My query:
> select id, w where id=x and id2=y (sometimes and d=z)
> 
> I have too many insert and select operation on this table.
> And which index type can i use ? Btree, Rtree, Gist or Hash ?
> Also I want to unique (id, id2)..
> Now this is my index. is it give me good performance ?
> CREATE UNIQUE INDEX ind1 ON test USING btree (id, id2)
> CREATE INDEX ind2 ON test USING btree (id)
> CREATE INDEX ind3 ON test USING btree (id2)
> CREATE INDEX ind4 ON test USING btree (w)
> CREATE INDEX ind5 ON test USING btree (d)

This isn't a Python question.  You'll get more and probably better
feedback in a group, mailing list or forum dealing with PostgreSQL.

Ciao,
	Marc 'BlackJack' Rintsch


From rcdailey at gmail.com  Sun Oct 21 17:17:19 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Sun, 21 Oct 2007 16:17:19 -0500
Subject: C++ version of the C Python API?
In-Reply-To: <471BBD55.9030601@v.loewis.de>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<471BBD55.9030601@v.loewis.de>
Message-ID: <496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>

On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
> No, I literally meant that the Python C API is object-oriented.
> You don't need an object-oriented language to write object-oriented
> code.

I disagree with this statement. C is not an object oriented language,
and I've seen attempts to make it somewhat object oriented, however it
failed miserably in readability and manageability overhead. However,
this isn't the place to discuss such a thing so I've got nothing more
to say than that.

I do appreciate you taking the time to respond to my inquiry and offer
a few C++ wrapper API's for the Python C API. Take care!


From aaron.watters at gmail.com  Wed Oct 10 09:45:13 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Wed, 10 Oct 2007 13:45:13 -0000
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1192010718.604966.277190@19g2000hsx.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<1191958556.735855.199180@22g2000hsm.googlegroups.com>
	<1191961946.278597.91810@k79g2000hse.googlegroups.com>
	<1192010718.604966.277190@19g2000hsx.googlegroups.com>
Message-ID: <1192023913.462571.157240@k79g2000hse.googlegroups.com>

On Oct 10, 6:05 am, Paul Boddie <p... at boddie.org.uk> wrote:
> On 9 Okt, 22:32, aaron.watt... at gmail.com wrote:
> ...tell us how the [ http://nucular.sourceforge.net ]
> software compares to stuff like Lucene or Xapian...

I wish I could, honestly.  I've looked briefly into trying
to put together some sort of comparisons, but I find the
documentation for both the systems mentioned quite forbidding.
I certainly don't want to spend as much time developing
comparisons with other projects as I did developing
nucular :).

For the moment I will make the completely unbiased
suggestion that nucular indices may be a lot easier
to set up and use than either Lucene or Xapian,  particularly
from a Python programming perspective.

It's also not immediately clear to me whether Xapian and
Lucene support completely unrestricted numbers and combinations
of fields, but I'm not sure.

I'll see if I can come up with something better than
that...

As a side note, if you do benchmarks, please don't use
the Lucene benchmark query taken from

http://lucene.apache.org/java/docs/benchmarks.html

namely,

Query: +Domain:sos +(+((Name:goo*^2.0 Name:plan*^2.0) (Teaser:goo* Tea
ser:plan*) (Details:goo* Details:plan*)) -Cancel:y) +DisplayStartDate:
[mkwsw2jk0 -mq3dj1uq0] +EndDate:[mq3dj1uq0-ntlxuggw0]

Because I expect nucular will perform very poorly on
this query (since it can't even implement it).  I put
a set of query features that I thought was
suitable for most purposes into nucular.  Others may appear
in later releases, but the one's that are there cover the
most common needs, I think.  I would prefer benchmarks
that compared simple common examples, not obscure
complicated ones.

  -- Aaron Watters

===
if you want a friend, get a dog.
   -- Truman




From charlottealverson at gmail.com  Fri Oct 19 19:36:03 2007
From: charlottealverson at gmail.com (my god)
Date: Fri, 19 Oct 2007 16:36:03 -0700
Subject: More friends more money,get friends while get paid
Message-ID: <1192836963.582937.233430@v23g2000prn.googlegroups.com>

More friends more money,get friends while get paid
http://groups.google.com/group/all-good-things/web/get-friends-while-get-paid



From anandology at gmail.com  Fri Oct 26 06:56:11 2007
From: anandology at gmail.com (Anand)
Date: Fri, 26 Oct 2007 10:56:11 -0000
Subject: object inheritance
Message-ID: <1193396171.753884.139930@e9g2000prf.googlegroups.com>

I am trying to implement some kind of object inheritance. Just like
one class can extend from another, I want to do the same on objects
dynamically.

I just thought that I can share my excitement here.

Suppose there are classes A and B and their instances a and b.

class A:
    def foo(self): self.say('foo')
    def say(self, msg):
        print 'a.say', msg

class B:
    def say(self, msg):
        print 'b.say', msg

a = A()
b = B()

I want b to inherit the behavior of a.

>>> b.extend_from(a)
>>> b.foo()
b.say foo

I looked around and found that some people talked about similar ideas,
but didn't find any concrete implementation.

I came up with the following implementation using meta-classes.

class ExtendMetaClass(type):
    def __init__(cls, *a, **kw):
        # take all attributes except special ones
        keys = [k for k in cls.__dict__.keys() if not
k.startswith('__')]
        d = [(k, getattr(cls, k)) for k in keys]

        # remove those attibutes from class
        for k in keys:
            delattr(cls, k)

        # remember then as dict _d
        cls._d = dict(d)

        def curry(f, arg1):
            def g(*a, **kw):
                return f(arg1, *a, **kw)
            g.__name__ = f.__name__
            return g

        def _getattr(self, name):
            """Get value of attribute from self or super."""
            if name in self.__dict__:
                return self.__dict__[name]
            elif name in self._d:
                value = self._d[name]
                if isinstance(value, types.MethodType):
                    return curry(value, self)
                else:
                    return value
            else:
                if self._super != None:
                    return self._super._getattr(name)
                else:
                    raise AttributeError, name

        def __getattr__(self, name):
            """Returns value of the attribute from the sub object.
            If there is no sub object, self._getattr is called.
            """
            if name.startswith('super_'):
                return self._super._getattr(name[len('super_'):])

            if self._sub is not None:
                return getattr(self._sub, name)
            else:
                return self._getattr(name)

        def extend_from(self, super):
            """Makes self extend from super.
            """
            self._super = super
            super._sub = self

        cls.__getattr__ = __getattr__
        cls._getattr = _getattr
        cls._super = None
        cls._sub = None
        cls.extend_from = extend_from

class Extend:
    __metaclass__ = ExtendMetaClass
    def __init__(self, super=None):
        if super:
            self.extend_from(super)

And the above example becomes:

class A(Extend):
    def foo(self): self.say('foo')
    def say(self, msg):
        print 'a.say', msg

class B(Extend):
    def say(self, msg):
        print 'b.say', msg
        # self.super_foo calls foo method on the super object
        self.super_say('super ' + msg)

a = A()
b = B()

>>> b.extend_from(a)
>>> b.foo()
b.say foo
a.say super foo

There are one issue with this approach. Once b extends from a,
behavior of a also changes, which probably should not. But that
doesn't hurt me much.

Any comments?



From http  Fri Oct 26 13:33:07 2007
From: http (Paul Rubin)
Date: 26 Oct 2007 10:33:07 -0700
Subject: "Standard" Full Text Search Engine
References: <mailman.475.1193402986.13605.python-list@python.org>
Message-ID: <7xy7dp233g.fsf@ruckus.brouhaha.com>

"Martin Marcher" <martin at marcher.name> writes:
> is there something like a standard full text search engine?
> 
> I'm thinking of the equivalent for python like lucene is for java or
> ferret for rails. Preferrably something that isn't exactly a clone of
> one of those but more that is python friendly in terms of the API it
> provides.

Ferret is basically a Lucene clone, originally written in Ruby but
with the intensive parts later rewritten in C for speed since the Ruby
version was too slow.  There was something similar done in Python
(PyLucene, I think) that was also pretty slow.

Solr (a wrapper around Lucene) has a reasonable set of Python
bindings.  Solr has become very popular among web developers because
it's pretty easy to set up and use.  However, its flexibility is not
all that great.

Nucular looks promising though still in a fairly early stage.
Suggestion for Aaron: it would be great if Nucular used the same
directives as Solr (i.e. say <field/> instead of <fld/> and fix other
such gratuitous differences) and implemented more Solr/Lucene features.


From vaj at tempinbox.com  Mon Oct  8 16:04:17 2007
From: vaj at tempinbox.com (fringo)
Date: Mon, 08 Oct 2007 20:04:17 -0000
Subject: Facebook app give feedback -Send birthday cards to buds
	http://apps.facebook.com/groupcards/start
Message-ID: <1191873857.189990.279670@v3g2000hsg.googlegroups.com>

Facebook app give feedback -Send birthday cards to buds
http://apps.facebook.com/groupcards/start



From arkanes at gmail.com  Wed Oct 31 18:59:50 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 31 Oct 2007 17:59:50 -0500
Subject: setting variables in outer functions
In-Reply-To: <1193870968.747606.281180@50g2000hsm.googlegroups.com>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
	<Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
	<1193830119.542006.137750@o38g2000hse.googlegroups.com>
	<Xns99DA7B469B79Fduncanbooth@127.0.0.1>
	<1193870968.747606.281180@50g2000hsm.googlegroups.com>
Message-ID: <4866bea60710311559g30fde935h60fdbf62ce751d84@mail.gmail.com>

On Oct 31, 2007 5:49 PM, Dustan <DustanGroups at gmail.com> wrote:
> On Oct 31, 7:08 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
>
> > Dustan <DustanGro... at gmail.com> wrote:
> > > On Oct 30, 11:29 am, Duncan Booth <duncan.bo... at invalid.invalid>
> > > wrote:
> > >> Neil Cerutti <horp... at yahoo.com> wrote:
> > >> > It's allows a standard programming idiom which provides a
> > >> > primitive form of object oriented programming using closures to
> > >> > represent state.
> >
> > >> > def account(opening_balance):
> > >> >   balance = opening_balance
> > >> >   def get_balance():
> > >> >     nonlocal balance
> > >> >     return balance
> > >> >   def post_transaction(x):
> > >> >     nonlocal balance
> > >> >     balance += x
> > >> >   return balance, post_transaction
> >
> > >> > fred_balance, fred_post = account(1500)
> > >> > joe_balance, joe_post = account(12)
> > >> > fred_post(20)
> > >> > joe_post(-10)
> > >> > fred_balance()
> >
> > >> TypeError: 'int' object is not callable
> >
> > >> > 1520
> > >> > joe_balance()
> >
> > >> TypeError: 'int' object is not callable
> >
> > >> > 2
> >
> > >> > Python classes will of course nearly always win, though the idiom
> > >> > looks like it might be faster (I don't have Python 3000 to try it
> > >> > out).
> >
> > >> Python classes might be less error prone.
> >
> > > Why would using classes make your code any less prone to typographical
> > > errors?
> >
> > Lots of reasons: shorter and clearer code being high on the list.
>
> It wouldn't be necessarily shorter, depending on what you're working
> with. Clearer is a matter of opinion.
>

It's going to be shorter in any non-trivial example, and even in most
trivial ones (as shown). Clearer may be a matter of opinion, but the
less complicated the code you're looking at is, the less chance you
have to make an error.

> > The
> > class equivalent would be:
> >
> > >>> class Account(object):
> >
> >    def __init__(self, opening_balance):
> >        self.balance = opening_balance
> >
> >    def post_transaction(self, x):
> >         self.balance += x
> >
> > >>> fred = Account(1500)
> > >>> joe = Account(12)
> > >>> fred.post_transaction(20)
> > >>> joe.post_transaction(-10)
> > >>> fred.balance
> > 1520
> > >>> joe.balance
> >
> > 2
> >
> > There is no scope for the particular error I highlighted: you no longer
> > have the duplication of declaring the functions and then returning them.
>
> The 'particular error' you highlighted was a typographical error,
> which can happen in any code. Sure, you can't have the exact same
> typographical error, but that's what happens when you switch between
> paradigms.
>

By having fewer explicit things to manage, you lessen the scope of
errors in naming those things. This is one reason why the DRY
principle is advocated - the fewer times you type something, the fewer
chances you have to typo it.

> > Also you don't need the accessor function at all (and if at some point
> > in the future you do want it you can make it a property).
> >
> > You don't have to invent separate names for each of the returned
> > functions: the dot notation suddenly makes that a no brainer.
>
> Fair enough; you got two valid arguments there.
>
> > Also the class is easier to extend: you no longer have to find and
> > change every call to account() if you want to add another method: just
> > add it.
>
> Of course, there are cases where you'll never want to extend it.
>

Designing it in such a way that it's impossible to extend pretty much
ensures that, doesn't it?

I have no idea why someone who already has a working, object system
would want to implement their own on top of closures. I'd even take
issue with the idea that's it's a "standard" idiom for the quite
uncommon task of creating object systems, it's a well known conceptual
idea but it's not actually implemented as such very often.


From mridula.ccpl at gmail.com  Mon Oct  8 06:58:11 2007
From: mridula.ccpl at gmail.com (Mridula Ramesh)
Date: Mon, 8 Oct 2007 16:28:11 +0530
Subject: Paned Window Widget Resize/ Refresh Trouble
Message-ID: <33dffc910710080358u53618395gddec7af362c53966@mail.gmail.com>

Hi.

I am trying to show data using the paned window widget, and am encountering
this problem: whenever the vertical/horizontal resizing bars are moved, the
widgets and data on the panels are thrown out of alignment and sometimes
totally disappear. They only reappear when you sort of drag the panes across
in a trial-and-error manner. Also, when i update the labels to reflect a
current recordset, some of the labels disappear. Can someone please explain
what I am doing wrong?

I don't know if this will help, but this is what the problematic code looks
like:

def showtagcloud(self):
        rts = Tk()
        rts.title("Similarly Tagged Files")
        rts.geometry("900x600")

        pane1 = PanedWindow(rts)
        pane1.pack(fill=BOTH, expand=1)
        #LEFT PANE
        left = Label(pane1, width=30)
        pane1.add(left)
        pane2 = PanedWindow(pane1, orient=VERTICAL)
        pane1.add(pane2)
        #TOP PANE
        top = Label(pane2, height=210, width=45)
        pane2.add(top)
        #BOTTOM PANE
        bottom = Label(pane2, height=5)
        pane2.add(bottom)
        pane1.paneconfig(left,minsize=400)
        pane2.paneconfig(top,minsize=450)

        LbForm = Label(left, text="File titles", justify=LEFT)
        LbForm.pack(anchor=N, padx=5, pady=20)

        LbDet = Label(top, text="File details", justify=LEFT)
        LbDet.pack(anchor=N, padx=5, pady=20)

        self.LbID = Label(top)
        self.LbID.pack(padx=10, pady=3, anchor=NW)
        self.LbTID = Label(top)
        self.LbTID.pack(padx=15, pady=5, anchor=NW)
        self.LbTitl = Label(top)
        self.LbTitl.pack(padx=10, pady=3, anchor=NW)
        self.LbTitle = Label(top)
        self.LbTitle.pack(padx=15, pady=5, anchor=NW)
        self.LbAu = Label(top)
        self.LbAu.pack(padx=10, pady=3, anchor=NW)
        self.LbAuth = Label(top)
        self.LbAuth.pack(padx=15, pady=5, anchor=NW)
        self.LbLoc = Label(top)
        self.LbLoc.pack(padx=10, pady=3, anchor=NW)
        self.LbPathway = Label(top)
        self.LbPathway.pack(padx=15, pady=5, anchor=NW)
        self.LbAbs = Label(top)
        self.LbAbs.pack(padx=10, pady=3, anchor=NW)
        self.LbAbst = Label(top)
        self.LbAbst.pack(padx=15, pady=5, anchor=NW)


        LbTc = Label(bottom, text="Other tags for this file:")
        LbTc.pack(anchor=NW, padx=5, pady=20)
        self.LbT1 = Label(bottom)
        self.LbT1.pack(padx=10, pady=5)
        self.LbT2 = Label(bottom)
        self.LbT2.pack(padx=10, pady=5)
        self.LbT3 = Label(bottom)
        self.LbT3.pack(padx=10, pady=5)
        self.LbT4 = Label(bottom)
        self.LbT4.pack(padx=10, pady=5)
        self.LbT5 = Label(bottom)
        self.LbT5.pack(padx=10, pady=5)

        self.LstTag = Listbox(left, selectmode=BROWSE)
        ScrBarV = Scrollbar(left)
        ScrBarH = Scrollbar(left, orient=HORIZONTAL)
        self.LstTag.pack(side=LEFT,fill=Y)
        ScrBarV.pack(side=RIGHT,fill=Y)
        ScrBarV.config(command=self.LstTag.yview)
        self.LstTag.config(width=60, yscrollcommand = ScrBarV.set)
        for xno in range(0, self.gsmax-1):
            self.LstTag.insert(END,str(self.pundoos[xno][1]))
        self.LstTag.bind("<<ListboxSelect>>", self.elaborate)

    def elaborate(self, event):
        temphold = self.LstTag.get(self.LstTag.curselection()[0])
        for xno in range(0, self.gsmax-1):
            if self.pundoos[xno][1]==temphold:
                self.LbID.config(text="Index No.")
                self.LbTID.config(text=self.pundoos[xno][0])
                self.LbTitl.config(text="Title")
                self.LbTitle.config(text=self.pundoos[xno][1],
wraplength=300, justify=LEFT)
                self.LbAu.config(text="Author(s)")
                self.LbAuth.config(text=self.pundoos[xno][2],
wraplength=300, justify=LEFT)
                self.LbLoc.config(text="Path")
                self.LbPathway.config(text=self.pundoos[xno][3],
wraplength=300, justify=LEFT)
                self.LbAbs.config(text="Abstract")
                self.LbAbst.config(text=self.pundoos[xno][4],
wraplength=300, justify=LEFT)

                self.LbT1.config(text=self.pundoos[xno][5],wraplength=200,
justify=LEFT)
                self.LbT2.config(text=self.pundoos[xno][6],wraplength=200,
justify=LEFT)
                self.LbT3.config(text=self.pundoos[xno][7],wraplength=200,
justify=LEFT)
                self.LbT4.config(text=self.pundoos[xno][8],wraplength=200,
justify=LEFT)
                self.LbT5.config(text=self.pundoos[xno][9],wraplength=200,
justify=LEFT)

Thanks.

Mridula.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071008/0341835b/attachment.html>

From python-url at phaseit.net  Tue Oct 16 21:13:55 2007
From: python-url at phaseit.net (Gabriel Genellina)
Date: Wed, 17 Oct 2007 01:13:55 +0000 (UTC)
Subject: Python-URL! - weekly Python news and links (Oct 17)
Message-ID: <ff3nkj$7f5$1@lairds.us>

QOTW:  "Aaaugh!  Don't use __slots__!" - Aahz

"I will use public attributes (with access customizable with properties)
and remember that in Python I can do everything :)." - Artur Siekielski
    
    
    Don't use __slots__ to create struct-like objects:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/4d0aa0ce90ee9eab/
    
    Carsten Haese aptly explains parameter binding in SQL statements:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/e8a42bfc3d5d857b/
    
    Converting repr() of simple objects into the original objects again:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/58a01273441d445f/
    
    Opinions about cross-platform GUI toolkits:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/59d2ea3930e0ca2/
    
    A misplaced module can make a singleton not unique:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/58dbabb9305807ac/
    
    Good Python news from Argentina (read "assistants" as "attendees")
	http://mail.python.org/pipermail/advocacy/2007-October/000399.html
    and Ohio:
	http://mail.python.org/pipermail/advocacy/2007-October/000396.html

    Some people confused about class attributes,
    classmethods, and mutating operations:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/56117389178c37d3/
    
    continuations: what's that? what are they good for?
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/671279b853d03277/
    
    Properties, attributes, and "Python is not Java":
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/77923ec25ee63e3d/
    
    
========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    Just beginning with Python?  This page is a great place to start:
	http://wiki.python.org/moin/BeginnersGuide/Programmers

    The Python Papers aims to publish "the efforts of Python enthusiats":
	http://pythonpapers.org/
    The Python Magazine is a technical monthly devoted to Python:
	http://pythonmagazine.com

    Readers have recommended the "Planet" sites:
	http://planetpython.org
	http://planet.python.org

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard continues the marvelous tradition early borne by
    Andrew Kuchling, Michael Hudson, Brett Cannon, Tony Meyer, and Tim
    Lesher of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Many Python conferences around the world are in preparation.
    Watch this space for links to them.

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Phaseit, Inc. (http://phaseit.net) is pleased to participate in and
sponsor the "Python-URL!" project.  Watch this space for upcoming
news about posting archives.


From jjl at pobox.com  Mon Oct 22 08:30:11 2007
From: jjl at pobox.com (John J. Lee)
Date: Mon, 22 Oct 2007 12:30:11 GMT
Subject: CGI Server that supports redirects
References: <5nr9p0Fja45tU1@mid.individual.net>
Message-ID: <87lk9vl4bw.fsf@pobox.com>

Thomas Guettler <guettli.usenet at thomas-guettler.de> writes:

> Hi,
>
> CGIHTTPServer does not support redirects[1]
>
> Is there an other python-only way to get a web server
> running wich can execute python code?
>
> Since I already use flup[2]. I think there is not much
> missing to get it serving as http server.
>
> Has anyone hints?

twisted.web2 .  I found it easier to get it to do the simple stuff I
needed than cherrypy.

Simple example that shows how to do static files, redirects & CGI in a
standalone script:

http://codespeak.net/svn/wwwsearch/mechanize/trunk/test-tools/twisted-localserver.py


Of course you can do dynamic but non-CGI stuff too, examples here
(these examples illustrate running under twistd rather than
standalone):

http://twistedmatrix.com/projects/web2/documentation/howto/intro.xhtml


Other twisted web stuff:

http://twistedmatrix.com/projects/web2/documentation/howto/

http://twistedmatrix.com/trac/wiki/WebDevelopmentWithTwisted


John


From gagsl-py2 at yahoo.com.ar  Sun Oct 21 23:39:20 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 22 Oct 2007 00:39:20 -0300
Subject: Problem Converting Word to UTF8 Text File
References: <1192984543.240902.3790@t8g2000prg.googlegroups.com>
	<mailman.282.1192986128.13605.python-list@python.org>
	<1192991577.355854.264410@v29g2000prd.googlegroups.com>
Message-ID: <op.t0kxru0jx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 21 Oct 2007 15:32:57 -0300, <patrick.waldo at gmail.com> escribi?:

> However, I still cannot read the unicode from the Word file.  If take
> out the first for-statement, I get a bunch of garbled text, which
> isn't helpful.  I would save them all manually, but I want to figure
> out how to do it in Python, since I'm just beginning.
>
> My intuition says the problem is with
>
> FileFormat=win32com.client.constants.wdFormatText
>
> because it converts fine to a text file, just not a utf-8 text file.
> How can I  modify this or is there another way to code this type of
> file conversion from *.doc to *.txt with unicode characters?

Ah! I thought you were getting the right file format.
I can't test it now, but this KB document
http://support.microsoft.com/kb/209186/en-us
suggests you should use wdFormatUnicodeText when saving the document.
What the MS docs call "unicode" when dealing with files, is in general  
utf16.
In this case, if you want to convert to utf8, the sequence would be:

    f = open(original_filename, "rb")
    udata = f.read().decode("utf16")
    f.close()
    f = open(new_filename, "wb")
    f.write(udata.encode("utf8"))
    f.close()

-- 
Gabriel Genellina



From tjreedy at udel.edu  Wed Oct 17 12:09:53 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 17 Oct 2007 12:09:53 -0400
Subject: why doesn't have this list a "reply-to" ?
References: <471530E3.9090602@gmail.com><mailman.96.1192573101.13605.python-list@python.org>
	<13hb0ss1oamhr14@corp.supernews.com>
Message-ID: <ff5c4i$eg8$1@ger.gmane.org>


"Grant Edwards" <grante at visi.com> wrote in message 
news:13hb0ss1oamhr14 at corp.supernews.com...
| On 2007-10-16, Robert Kern <robert.kern at gmail.com> wrote:
|
| > It's not universal. Many people consider it harmful. Google "reply-to 
considered
| > harmful" for a variety of opinions, for and against.
| >
| > I use GMane to read and post to this list because I like my lists to 
act like
| > USENET.
| >
| >   http://gmane.org
|
| Since "this list" is just mirroring a Usenet news group,
| wouldn't it be more straight-forward to just use a real Usenet
| news server?

At the time I started using Gmane, it was more dependable than the news 
server available to me.  It possible still is.  Now, I follow other Python 
mailing lists that are not Usenet groups but which are mirrored on Gmane, 
so it is easier to have all my subscribed lists in one block on the 
sidebar. 





From lasses_weil at klapptsowieso.net  Sun Oct  7 11:22:30 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 17:22:30 +0200
Subject: Newbie packages Q
In-Reply-To: <1191768074.585609.251570@22g2000hsm.googlegroups.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
Message-ID: <4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>

MarkyMarc wrote:
> On Oct 7, 4:24 pm, Bruno Desthuilliers <bruno.
> 42.desthuilli... at wtf.websiteburo.oops.com> wrote:
>> MarkyMarc a ?crit :
>> import is a statement. It's executed, like any other top-level code,
>> when the module is imported (or the script loaded into the interpreter
>> if it's called directly). So if A.py imports B.py and B.py imports A.py,
>> you do have a circular reference that can't be solved.
>>
>> Anyway, circular dependencies are Bad(tm), so you *don't* want such a
>> situation.
> 
> Yes it is bad and I would not do it in production. But shouldn't I be
> able to call one module from another module inside a package?
> 
Thats not the point. Intra-package references are (of course) perfectly 
possible, the problem here are *circular* references (as Bruno explained).

Secondly, if you have such circular dependencies, I would argue that 
your package design might need a little reconsideration. Why do 2 
seperate modules need *each other*? To me that sounds like 2 modules 
begging to be combined.

/W


From deets at nospam.web.de  Wed Oct 17 09:56:48 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 15:56:48 +0200
Subject: Dynamic and lazy import
References: <1192540610.799241.236160@t8g2000prg.googlegroups.com>
	<47159d0a$0$11389$9b622d9e@news.freenet.de>
	<1192625367.751188.241210@y27g2000pre.googlegroups.com>
Message-ID: <5nmil0FiouurU1@mid.uni-berlin.de>

Alexandre Badez wrote:

> Thanks for all your advices, but it's not really what I would like to
> do.
> 
> I'm going to be more clearer for what I really want to do.
> 
> Here we have got many library for different applications. All those
> library have a version and between a version and an other, there isn't
> always a very good backward compatibility (I know, it's very ugly, but
> it's like that...).
> 
> Moreover some library use the version 1.1 and some the version 1.2 of
> lib A and version 2.1 and version 2.0 of lib B ... you know what: it's
> very ugly.
> 
> My idea was to be able to use lib quiet like that.
> 
> import A (<- If I want to use the very last version)
> # or
> import A.1_1 (<- If I want to use the version 1.1 of the A lib)
> 
> Something else ?
> Yes :)
> I do not want to add all those path in PYTHONPATH (would be too ugly,
> and "complicated").
> I want it lazy (do not import every version of every lib every time)
> I want it scalable: if a user or the admin add a new lib or a version
> of lib it would be very very great if he had nothing else (than copy
> his directory) to do.
> 
> So what I wanted to do, was to be able to control what the user really
> wanted to import, and act he excepted and put the "intelligence" in a
> __init__ script

Use setuptools + pkg_resources to install sereval versions of your libraries
together and then you can require a certain version of your lib.

HOWEVER: this WON'T work for several versions of a library in ONE running
python process!!!! Because the import will then either fail silently (after
all, "import foo" is ignored if foo is already present) or pkg_resources is
so clever that it keeps tracks of requirements and if they are conflicting
will puke on you.

Diez


From beingthexemplarylists at gmail.com  Tue Oct  9 04:20:11 2007
From: beingthexemplarylists at gmail.com (warhero)
Date: Tue, 09 Oct 2007 08:20:11 -0000
Subject: python bytecode questions.
Message-ID: <1191918011.685441.151180@o3g2000hsb.googlegroups.com>

First question, I can't seem to get any python bytecode to be
produced. I've tried different techniques from chapter 30.8 to chapter
31 of the python guide.. I was under the assumption that after
compiling a file, it would output a pyc file, but where does it go?
Any help would be appreciated.

Second, Are there any other projects out for bundling python bytecode
files, making it able to use a couple files to distribute an entire
app??  I saw one of the effbot site but it's old as it was written for
1.4..

Third, can distributing code in pyc files, speed up the application?
Or would speed increases only be seen upon application initialization?
As an example, let's say I'm running an application server, would
distributing the source in some pyc files with a bootstrapper be any
faster overall, or just on init??

Thanks



From mogmios at gmail.com  Mon Oct 15 19:16:40 2007
From: mogmios at gmail.com (File Grok)
Date: Mon, 15 Oct 2007 17:16:40 -0600
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
Message-ID: <4713F4D8.1000107@gmail.com>

What's your URL for an example page that is having this error? Trying to 
figure out Google's JS is usually an example of self abuse.
> My website is built from a Python CGI and works great. I'm now
> including Google Ads, which requires two pieces of JavaScript; the
> first contains the display settings for the ads, and the second piece
> is a very lengthy garbled js file at http://pagead2.googlesyndication.com/pagead/show_ads.js
>
> The first piece of JavaScript works fine and the ads display
> correctly, however the second file throws an "unterminated string
> literal" js error. Looking at it you can see a healthy amount of both
> single and double quotes, which is where my problem lies.
>
> What is the best way to get the second js file into a nice printable/
> usable format? cgi.escape? xml.sax.saxutils.quoteattr? String
> substitution? I could use some guidance.
>
> Thank you!
>
>   



From dirkheld at gmail.com  Fri Oct 19 10:33:29 2007
From: dirkheld at gmail.com (dirkheld)
Date: Fri, 19 Oct 2007 07:33:29 -0700
Subject: write whitespace/tab to a text file
Message-ID: <1192804409.415321.257150@k35g2000prh.googlegroups.com>

Hi,

I would l like to write some data to a text file. I want to write the
data with whitespace or tabs in between so that I create tabular
columns like in a spreadsheet. How can I do this in python.
(btw, I'm new to python)

names = ['John','Steve','asimov','fred','jim']
## output I would like in txt file : John         Steve
asimov      fred     jim

f=open('/User/home/Documents/programming/python/test.txt','w')
	for x in range(len(names)):
		f.write(tags[x])
	f.close()



From byte8bits at gmail.com  Fri Oct  5 10:12:45 2007
From: byte8bits at gmail.com (byte8bits at gmail.com)
Date: Fri, 05 Oct 2007 07:12:45 -0700
Subject: unit testing
In-Reply-To: <mailman.1571.1191577093.2658.python-list@python.org>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1571.1191577093.2658.python-list@python.org>
Message-ID: <1191593565.971012.212920@22g2000hsm.googlegroups.com>

On Oct 5, 5:38 am, Craig Howard <craig.how... at earthlink.net> wrote:
> Brad:
>
> If the program is more than 100 lines or is a critical system, I
> write a unit test. I hate asking myself, "Did I break something?"
> every time I decide to refactor a small section of code. For
> instance, I wrote an alarm system in Python for a water treatment
> plant. If the chlorine, pH, or turbidity are out of spec, an email
> message is sent to the plant operator's pager. Because of the nature
> of the alarm system, extensive field testing was out of the question.
> Unit testing was the only way to ensure it worked without disrupting
> the plant operation.
>
> Craig

Thanks to all for the opinions. Just to clarify, I have nothing
against testing. I like doing it. I catch a lot of bugs! I dislike the
formality of the unittest module. It's unyielding. It makes testing
difficult unless your code is written with testing in mind from the
start.

I maintain old code... code written a long time ago, before unittest
was popular. Getting unittest to work on that is difficult at best. So
we do informal testing ourselfs. The end result is the same... bugs
are squashed before the code is placed into production. Many times, we
find bugs as soon as we write a test!

Thanks again for the advice.

Brad




From michael at jedimindworks.com  Fri Oct  5 04:44:09 2007
From: michael at jedimindworks.com (Michael Bentley)
Date: Fri, 5 Oct 2007 01:44:09 -0700
Subject: open(.xls file, 'w') so that hyperlinks appear
In-Reply-To: <5163BDF07CAF4551A6376FF9D902BF4B@PCvanastrid>
References: <5163BDF07CAF4551A6376FF9D902BF4B@PCvanastrid>
Message-ID: <84C6CE9F-8609-448C-9F45-48F6E29DA0CC@jedimindworks.com>




-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071005/619a2327/attachment.html>

From __peter__ at web.de  Mon Oct 15 07:34:34 2007
From: __peter__ at web.de (Peter Otten)
Date: Mon, 15 Oct 2007 13:34:34 +0200
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de> <fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
Message-ID: <fevj8a$imh$01$1@news.t-online.com>

Diez B. Roggisch wrote:

> out:) But I wanted a general purpose based solution to be available that 
> doesn't count on len() working on an arbitrary iterable.

You show signs of a severe case of morbus itertools.
I, too, am affected and have not yet fully recovered...

Peter


From naveen.sabapathy at gmail.com  Fri Oct 12 01:50:11 2007
From: naveen.sabapathy at gmail.com (naveen.sabapathy at gmail.com)
Date: Thu, 11 Oct 2007 22:50:11 -0700
Subject: pyserial doesn't recognize virtual serial port
Message-ID: <1192168211.911755.71940@z24g2000prh.googlegroups.com>

Hi,
  I am trying to use virtual serial ports to develop/test my serial
communication program. Running in to trouble...

  I am using com0com to create the virtual ports. The virtual ports
seem to be working fine when I test it with Hyperterminal .

I am using the example program that comes with pyserial, as below.
---------------
import serial
ser = serial.Serial('CNCA0') #open virtual serial port
print ser.portstr            #check which port was realy used
ser.write("Hello")              #write a string
ser.close()                  #close port
-----------------

The following is the error message:

--------------
Traceback (most recent call last):
  File "C:\Python25\Naveen Files\TestSerial", line 2, in <module>
    ser = serial.Serial('CNCA0') #open first serial port
  File "c:\Python25\Lib\site-packages\serial\serialutil.py", line 156,
in __init__
    self.open()
  File "c:\Python25\Lib\site-packages\serial\serialwin32.py", line 55,
in open
    raise SerialException("could not open port: %s" % msg)
SerialException: could not open port: (2, 'CreateFile', 'The system
cannot find the file specified.')
--------------

When I try with 'COM3', which comes inbuilt in my laptop, COM3 is
recognized. Few other posts on the web seem to indicate pyserial
should work fine with virtual serial ports. What am I missing? Please
help.

--Thanks
--NS



From justinagraham at gmail.com  Tue Oct 16 18:00:48 2007
From: justinagraham at gmail.com (mannewalis)
Date: Tue, 16 Oct 2007 22:00:48 -0000
Subject: Problem calling python modules from python apache handler
Message-ID: <1192572048.452439.186810@i13g2000prf.googlegroups.com>

Hi,

I have the following setup...

Apache 2.2.3, Python 2.5 and mod_python 3.3.1

I have configured apache to call a python script when fetching .py
resources...so far so good... I did the hello world script in the
mod_python docs and it works great.

Now when I want to add some meat and potatoes and call some other
python code from the script things get pear shaped.. I try to import
the module I want, but it never can find it... I always get the
error...

ImportError: No module named ???

no matter what I do. I have moved my python modules around, to no
avail. I've even put them in the same directory as the handler script
and even that doesn't work.

I am fairly new to python, so I expect there is some search-path-
fu(tm) that I am presently unaware of. Can anybody explain how to get
this working?

Thanks
Justin



For example...

I have the following folders...

\python25\lib\test\

with the script mytest.py

In my apache hander I try to import this script

from test import mytest

and get the error..


MOD_PYTHON ERROR

ProcessId:      4988
Interpreter:    'localhost'

ServerName:     'localhost'
DocumentRoot:   'C:/Program Files/EasyPHP 2.0b1/www'

URI:            '/foo.py'
Location:       None
Directory:      'C:/Program Files/EasyPHP 2.0b1/www/'
Filename:       'C:/Program Files/EasyPHP 2.0b1/www/foo.py'
PathInfo:       ''

Phase:          'PythonHandler'
Handler:        'query'

Traceback (most recent call last):

  File "C:\Python25\lib\site-packages\mod_python\importer.py", line
1537, in HandlerDispatch
    default=default_handler, arg=req, silent=hlist.silent)

  File "C:\Python25\lib\site-packages\mod_python\importer.py", line
1202, in _process_target
    module = import_module(module_name, path=path)

  File "C:\Python25\lib\site-packages\mod_python\importer.py", line
296, in import_module
    log, import_path)

  File "C:\Python25\lib\site-packages\mod_python\importer.py", line
680, in import_module
    execfile(file, module.__dict__)

  File "C:\Program Files\EasyPHP 2.0b1\www\query.py", line 2, in
<module>
    from test import mytest

ImportError: No module named test


MODULE CACHE DETAILS

Accessed:       Tue Oct 16 14:50:22 2007
Generation:     4

_mp_9bae44ea3d2a76746732f5d982e3e12d {
  FileName:     'C:\\Program Files\\EasyPHP 2.0b1\\www\\query.py'
  Instance:     13 [RELOAD]
  Generation:   4 [ERROR]
  Modified:     Mon Oct 15 19:54:19 2007
  Imported:     Mon Oct 15 19:50:44 2007
}



From martin at v.loewis.de  Tue Oct 23 17:50:29 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 23 Oct 2007 23:50:29 +0200
Subject: strange transliteration in win32com.client
In-Reply-To: <1193171917.034743.121960@q5g2000prf.googlegroups.com>
References: <1193171917.034743.121960@q5g2000prf.googlegroups.com>
Message-ID: <471E6CA5.8030307@v.loewis.de>

> 'Microsoft JET Database Engine', "'c:\\Hqwhslfs001\\office\risk
> oversight\\myaccess.mdb' is not a valid path.  Make sure that the path
> name is spelled correctly and that you are connected to the server on
> which the file resides.", None, 5003044, -2147467259), None)
> 
> Please note the strange insertion of double slashes in the indicated
> 'not valid path.'

That is not strange at all. In Python, the \ character in a string
literal is an escape character, see

http://docs.python.org/ref/strings.html

When Python prints out a string in its "repr", it always uses the
source code notation to print it back.

So if you want to have a single backslash in a string, you have to put
two backslashes into the source code.

> When I call it with data_source = 'V:\risk oversight\myassessdb.mdb',
> which reflects how this same drive is mapped on my machine, I get:
> 
> 'Microsoft JET Database Engine', "'v:\\\risk oversight\
> \myaccessdb.mdb' is not a valid path.
> 
> Note the weird transliteration of data_source.  I am powerless to
> understand this.

In your source code, \r is not a backslash-followed-by-r, but a
carriage-return character (so it's a single character, not two);
also in the first example. Windows finds that the file you denote
here does not exist - you don't have any files with a carriage
return in their file name on your disk.

In addition, Windows considers V:foo as a relative path; relative
to the current directory on drive V. So V:foo is a short-hand
for V:\foo, which, as a Python string, reads 'V:\\foo'. As you
have the director '\risk oversight' specified (which starts
with CR), the full normalized string will display with three
consecutive \ characters.

You can avoid quoting all backslashes by using raw strings
(see above URL).

HTH,
Martin


From nagle at animats.com  Fri Oct 12 00:50:12 2007
From: nagle at animats.com (John Nagle)
Date: Thu, 11 Oct 2007 21:50:12 -0700
Subject: [Tutor] matching a street address with regular expressions
In-Reply-To: <mailman.32.1192035770.927.python-list@python.org>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
Message-ID: <XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>

Shawn Milochik wrote:
> On 10/4/07, Ricardo Ar?oz <ricaraoz at gmail.com> wrote:
>> Christopher Spears wrote:
>>> One of the exercises in Core Python Programming is to
>>> create a regular expression that will match a street
>>> address.  Here is one of my attempts.

    This is actually quite difficult to do well.  Worse,
regular expressions are the wrong tool for the job,
because addresses are properly parsed in reverse, from the END of
the address.  See the USPS Postal Address Standards at
"http://pe.usps.gov/cpim/ftp/pubs/Pub28/pub28.pdf".  Also
worth reading is "Frank's Compulsive Guide to Postal Addresses"
at "http://www.columbia.edu/kermit/postal.html".

    Here's a fun exercise: convert this address parser in Perl
to Python:

http://cpan.uwinnipeg.ca/htdocs/Geo-StreetAddress-US/Geo/StreetAddress/US.pm.html

There are features in those regular expressions that I can't find in three
Perl books or the online documentation.

    If anyone has a first-rate address parser in Python that will cover
most of the developed world, I'd like to talk to them.

				John Nagle
				SiteTruth


From allen.fowler at yahoo.com  Sun Oct 14 23:36:51 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: Sun, 14 Oct 2007 20:36:51 -0700
Subject: Simple HTML template engine?
Message-ID: <1192419411.895715.138450@e9g2000prf.googlegroups.com>

Hello,

Can anyone recommend a simple python template engine for generating
HTML that relies only on the Pyhon Core modules?

No need for caching, template compilation, etc.

Speed is not a major issue.

I just need looping and conditionals. Template inheritance would be a
bonus.

I've seen Genshi and Cheetah, but they seem way too complex.

Any ideas?

I'm sure I could build something myself, but I'm sure this has already
been done quite a few times.  Why re-invent the wheel, right?


Thank you,
Allen



From ldo at geek-central.gen.new_zealand  Thu Oct  4 04:00:36 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 21:00:36 +1300
Subject: Convert on uppercase unaccentent unicode character
References: <Xns99BED1C4FA1CFduncanbooth@127.0.0.1>
	<mailman.1483.1191444874.2658.python-list@python.org>
	<Xns99BEE0D44EC14duncanbooth@127.0.0.1>
Message-ID: <fe26j4$vs0$2@lust.ihug.co.nz>

In message <Xns99BEE0D44EC14duncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Steve Holden <steve at holdenweb.com> wrote:
> 
>>> No, that will uppercase the string, but it doesn't (and shouldn't)
>>> strip the accents:
>>> 
>> I can agree that is doesn't (though I am taking your word for it), but
>> a French person will definitely feel it's doing the wrong thing. Upper
>> case letters aren't accented in written French.
>> 
> I didn't know that, and I'm not sure I believe it: but then the French
> tend to have conventions honoured more in the breach than the observance.

Second most diabolical spelling system in the world ... after English.


From tjreedy at udel.edu  Tue Oct  2 10:22:22 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 2 Oct 2007 10:22:22 -0400
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com><7xr6kez5aa.fsf@ruckus.brouhaha.com>
	<1191293650.355504.312590@n39g2000hsh.googlegroups.com>
Message-ID: <fdtk6u$brr$1@sea.gmane.org>


"bramble" <cadet.bramble at gmail.com> wrote in message 
news:1191293650.355504.312590 at n39g2000hsh.googlegroups.com...
| I don't know... As I meant to imply above, it's looking like Tkinter
| will be playing its expected role in Py3k as the GUI toolkit of
| choice. And from what I've seen of the Py3k effort, there's been
| really excellent work on pulling out stuff that should be pulled out.
| So, if it was *really* simply only first-mover advantage keeping it
| there, I'd expect to see talk of removing it from the standard
| library.

First, the 3.0a1 release put off modification of the stdlib.  Second, Guido 
wants to distribute a minimal development environment - Idle - and that is 
written in TKinter.  Third, I have not seen a formal proposal from the 
authors of any other GUI toolkit that such replace TKinter or even 
supplement it.  There are disadvantages as well as advantages to having 
one's work in the stdlib.





From frank at chagford.com  Sat Oct 27 02:02:38 2007
From: frank at chagford.com (Frank Millman)
Date: Fri, 26 Oct 2007 23:02:38 -0700
Subject: simple question on dictionary usage
In-Reply-To: <1193464703.330534.279080@22g2000hsm.googlegroups.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<1193464703.330534.279080@22g2000hsm.googlegroups.com>
Message-ID: <1193464958.063849.106890@z9g2000hsf.googlegroups.com>

>
> This should work -
>
> egt = dict([i for i in d.items() if i[0].startswith('E')])
>

Of course I meant record.items(), not d.items(). Sorry.

Frank



From python.list at tim.thechases.com  Wed Oct 17 20:47:50 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 17 Oct 2007 19:47:50 -0500
Subject: Pull Last 3 Months
In-Reply-To: <1192665202.277171.132880@t8g2000prg.googlegroups.com>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>	<47167F80.8080208@tim.thechases.com>	<mailman.144.1192661793.13605.python-list@python.org>
	<1192665202.277171.132880@t8g2000prg.googlegroups.com>
Message-ID: <4716AD36.8040302@tim.thechases.com>

> It looks like you copied the month 2 case from the month 1 case
> because you forgot to edit it afterwards. Anyway, a bit of modulo-12
> arithmetic avoids special cases, and allows the number of months to be
> generalised:

nice...

> import datetime
> 
> months = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split()
> 
> def last_months(n):
>     month = datetime.date.today().month
>     return [months[(month - i - 1) % 12] for i in range(n)]
> 
> print last_months(3)

In the event that you need them in whatever your locale is, you
can use the '%b' formatting to produce them:

import datetime

month_map = dict(
  (n, datetime.date(2000,n+1,1).strftime('%b'))
  for n in xrange(12)
  )

The function can then be written as either a generator:

def last_months(months):
  this_month = datetime.date.today().month - 1
  for i in xrange(months):
    yield month_map[(this_month-i) % 12]

or as a function returning a list/tuple:

def last_months(months):
  this_month = datetime.date.today().month - 1
  return [month_map[(this_month - i) % 12]
    for i in xrange(months)]



From bj_666 at gmx.net  Fri Oct 19 07:34:58 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 19 Oct 2007 11:34:58 GMT
Subject: General module name clash problem?
References: <4718904e$0$30373$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <5nrj32FjmsgnU1@mid.uni-berlin.de>

On Fri, 19 Oct 2007 13:09:22 +0200, jipjip wrote:

> I mean, this is a general problem.
> Must i look for every module that gets importet for not clashing
> with my module files residing in the calling directory?

Yes.

> Is the python package system insufficient, is there something wrong with 
> my opinions or do i need a "gotcha"?

The package system is not insufficient but could solve your problem
actually.  Don't put all your modules simply in the same directory but in a
package so that your `whatever.pickle` does not clash with the standard
`pickle` anymore.

Ciao,
	Marc 'BlackJack' Rintsch


From oliphant.travis at ieee.org  Mon Oct 22 15:26:47 2007
From: oliphant.travis at ieee.org (Travis Oliphant)
Date: Mon, 22 Oct 2007 14:26:47 -0500
Subject: Committing latest patch on Issue 708374 to SVN (adding offset to mmap)
Message-ID: <ffithl$17v$1@ger.gmane.org>


Hi all,

I think the latest patch for fixing Issue 708374 (adding offset to mmap) 
should be committed to SVN.

I will do it, if nobody opposes the plan.  I think it is a very 
important addition and greatly increases the capability of the mmap module.

Thanks,

-Travis Oliphant



From martin at v.loewis.de  Sun Oct 21 13:06:25 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 21 Oct 2007 19:06:25 +0200
Subject: C++ version of the C Python API?
In-Reply-To: <mailman.230.1192833455.13605.python-list@python.org>
References: <mailman.230.1192833455.13605.python-list@python.org>
Message-ID: <471B8711.1020509@v.loewis.de>

> Is there a C++ version of the C Python API packaged with python 2.5?

Stargaming has already mentioned the fine points; the first answer is:
yes, the API packaged python 2.5 can be used with C++. It is a C++
version of the same API as it adds proper extern "C" declarations around
all prototypes, and it was specifically cleaned up (ten years ago)
to work with C++.

This API does not make use of many of the C++ features, including
classes, templates, or overloading.

Regards,
Martin


From tdwdotnet at gmail.com  Thu Oct 25 09:01:13 2007
From: tdwdotnet at gmail.com (Tim Williams)
Date: Thu, 25 Oct 2007 14:01:13 +0100
Subject: local variable referenced before assignment
In-Reply-To: <slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
	<slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
Message-ID: <9afea2ac0710250601j70c6f2eeu65ecb75fa65cad12@mail.gmail.com>

On 25/10/2007, A.T.Hofkamp <hat at se-162.se.wtb.tue.nl> wrote:
> On 2007-10-25, Pete Bartonly <none at try.invalid> wrote:
> >
> Also, brackets around conditions (in the if) are not needed, and comparing
> against None is usually done with 'is' or 'is not' instead of '==' or '!='.
> The result is then
>
> if logMsg is not None:

Or just

>>>  if logMsg:
            do_something()

:)


From gagsl-py2 at yahoo.com.ar  Mon Oct 29 19:20:25 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 20:20:25 -0300
Subject: clear shell screen
References: <47254E9E.3040008@comcast.net>
	<op.t0x44pgvx6zn5v@a98gizw.cpe.telecentro.net.ar>
	<47264338.8060607@comcast.net>
Message-ID: <op.t0ze4bvrx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 29 Oct 2007 17:31:52 -0300, Shawn Minisall  
<trekker182 at comcast.net> escribi?:

> Hmm...it works fine within the command line but then when I import os in
> python and then try os.system("cls"), i get that very fast
> opening/closing window and 0 inside the shell.

Try the other method menctioned in the Knowledge Base article:

<code>
"""
How To Performing Clear Screen (CLS) in a Console Application

 From http://support.microsoft.com/kb/99261

Some non-Microsoft versions of C++ provide a clrscr function
for clearing the screen in a DOS application. However, there
is no Win32 Application Programming Interface (API) or
C-Runtime function that will perform this function.
To accomplish this task for a Win32 console application, use
one of the following methods:
- os.system("cls")
- Write a function that will programmatically clear the screen

The following function is my (GG) Python translation of the
original C code as published in the Microsoft article, using
Mark Hammond's pywin32 extensions:
"""

import win32api
import win32console

def cls():
     "Clear console screen"
     TopLeft = win32console.PyCOORDType(0,0)
     csb = win32console.GetStdHandle(win32api.STD_OUTPUT_HANDLE)
     csbi = csb.GetConsoleScreenBufferInfo()
     size = csbi['Size'].X * csbi['Size'].Y;
     csb.FillConsoleOutputCharacter(u' ', size, TopLeft)
     csb.FillConsoleOutputAttribute(csbi['Attributes'], size, TopLeft);
     csb.SetConsoleCursorPosition(TopLeft)

</code>

-- 
Gabriel Genellina



From sundarvenkata at gmail.com  Fri Oct 26 04:55:59 2007
From: sundarvenkata at gmail.com (sundarvenkata)
Date: Fri, 26 Oct 2007 01:55:59 -0700
Subject: Mouse hover event in wxpython
Message-ID: <1193388959.145006.293510@50g2000hsm.googlegroups.com>

Hi All,

Can somebody tell me if there is an event to indicate mouse hover over
a control in wxPython? EVT_MOTION does not seem to cut it.

 Thanks in advance,
Sundar



From steven.bethard at gmail.com  Fri Oct  5 11:13:57 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 05 Oct 2007 09:13:57 -0600
Subject: unit testing
In-Reply-To: <1191593565.971012.212920@22g2000hsm.googlegroups.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1571.1191577093.2658.python-list@python.org>
	<1191593565.971012.212920@22g2000hsm.googlegroups.com>
Message-ID: <BrudnZAsG6UpyZvanZ2dnUVZ_rDinZ2d@comcast.com>

byte8bits at gmail.com wrote:
> On Oct 5, 5:38 am, Craig Howard <craig.how... at earthlink.net> wrote:
>> Brad:
>>
>> If the program is more than 100 lines or is a critical system, I
>> write a unit test. I hate asking myself, "Did I break something?"
>> every time I decide to refactor a small section of code. For
>> instance, I wrote an alarm system in Python for a water treatment
>> plant. If the chlorine, pH, or turbidity are out of spec, an email
>> message is sent to the plant operator's pager. Because of the nature
>> of the alarm system, extensive field testing was out of the question.
>> Unit testing was the only way to ensure it worked without disrupting
>> the plant operation.
> 
> Thanks to all for the opinions. Just to clarify, I have nothing
> against testing. I like doing it. I catch a lot of bugs! I dislike the
> formality of the unittest module. It's unyielding. It makes testing
> difficult unless your code is written with testing in mind from the
> start.

There's been talk in the past about trying to bring some of the features 
of py.test to the unittest module.  However, I think there hasn't been 
anyone with enough free time to start tackling this problem.

STeVe


From patrick.waldo at gmail.com  Sun Oct 14 09:48:51 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Sun, 14 Oct 2007 13:48:51 -0000
Subject: Simple Text Processing Help
Message-ID: <1192369731.561036.31010@i38g2000prf.googlegroups.com>

Hi all,

I started Python just a little while ago and I am stuck on something
that is really simple, but I just can't figure out.

Essentially I need to take a text document with some chemical
information in Czech and organize it into another text file.  The
information is always EINECS number, CAS, chemical name, and formula
in tables.  I need to organize them into lines with | in between.  So
it goes from:

200-763-1                     71-73-8
n?trium-tiopent?l           C11H18N2O2S.Na           to:

200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na

but if I have a chemical like: kyselina mo?ov?

I get:
200-720-7|69-93-2|kyselina|mo?ov?
|C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l

and then it is all off.

How can I get Python to realize that a chemical name may have a space
in it?

Thank you,
Patrick

So far I have:

#take tables in one text file and organize them into lines in another

import codecs

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"
input = codecs.open(path, 'r','utf8')
output = codecs.open(path2, 'w', 'utf8')

#read and enter into a list
chem_file = []
chem_file.append(input.read())

#split words and store them in a list
for word in chem_file:
    words = word.split()

#starting values in list
e=0   #EINECS
c=1   #CAS
ch=2  #chemical name
f=3   #formula

n=0
loop=1
x=len(words)              #counts how many words there are in the file

print '-'*100
while loop==1:
    if n<x and f<=x:
        print words[e], '|', words[c], '|', words[ch], '|', words[f],
'\n'
        output.write(words[e])
        output.write('|')
        output.write(words[c])
        output.write('|')
        output.write(words[ch])
        output.write('|')
        output.write(words[f])
        output.write('\r\n')
        #increase variables by 4 to get next set
        e = e + 4
        c = c + 4
        ch = ch + 4
        f = f + 4
        # increase by 1 to repeat
        n=n+1
    else:
        loop=0

input.close()
output.close()



From rw at smsnet.pl  Mon Oct 29 17:12:27 2007
From: rw at smsnet.pl (Rob Wolfe)
Date: Mon, 29 Oct 2007 22:12:27 +0100
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
Message-ID: <87abq1mxqc.fsf@merkury.smsnet.pl>

brad <byte8bits at gmail.com> writes:

> Will len(a_string) become a_string.len()? I was just reading
>
> http://docs.python.org/dev/3.0/whatsnew/3.0.html
>
> One of the criticisms of Python compared to other OO languages is that
> it isn't OO enough or as OO as others or that it is inconsistent. And
> little things such as this seem to support those arguments. Not that
> it matters really... just seems that classes with methods used in a
> more consistent manner would be more appropriate in an OO
> langauage. Is there a reason that len cannot be a method?
>
> a_string.lower() makes sense, as does a_string.split(),
> a_string.strip()... why not a_string.len()?

I wonder why people always complain about `len` function but never
about `iter` or `pprint.pprint`? :)

And to answer the question. In OO programming generic functions
are no less important than classes and objects.

Regards,
Rob


From andres.j.new at gmail.com  Mon Oct  1 20:09:25 2007
From: andres.j.new at gmail.com (andresj)
Date: Tue, 02 Oct 2007 00:09:25 -0000
Subject: Using fractions instead of floats
In-Reply-To: <1191272365.225974.41660@w3g2000hsg.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
	<1191272365.225974.41660@w3g2000hsg.googlegroups.com>
Message-ID: <1191283765.496514.94080@50g2000hsm.googlegroups.com>


> > On 2007-10-01, Arnaud Delobelle <arno... at googlemail.com> wrote:
>
> > > Finally, arithmetic would become very confusing if there were
> > > three distinct numeric types; it already causes enough
> > > confusion with two!

Well, yeah... I get what you are saying, that would be confusing...

Terry Reedy and Laurent Pointal:
I know from __future__ import division changes the behaivour to return
floats instead of ints, but what I meant is to be able to implement a
function (or class/method) which would return what _I_ want/decide.

Gabriel Genellina, thanks for the suggestion of wrapping my code. I
think it could be one way... But I think it would be too much trouble,
I'll just go with writing fractions/rationals explicitly.

And thanks to mensanator and Gabriel for the suggestion of gmpy, and
to Nick for the example (It really helps to have an example, because
it usually takes me hours to get to what I want in the
documentations :). I think I will use that, when i get it working in
Ubuntu. Do you guys know of any pre-made package or guides for getting
it working in Ubuntu?

Well, I guess my idea was not as good as I thought it was :). But
anyways... I look forward to Python 3.0 (Specially the
__future__.with_statement and the standardization of names-- cStringIO
is just too ugly for my eyes!)



From davecook at nowhere.net  Sat Oct 13 06:20:39 2007
From: davecook at nowhere.net (Dave Cook)
Date: Sat, 13 Oct 2007 10:20:39 GMT
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<mailman.159.1192260728.927.python-list@python.org>
	<as0Qi.8294$UN.1208@newsfe24.lga>
	<mailman.165.1192269333.927.python-list@python.org>
Message-ID: <XZ0Qi.126$BT5.96@newsfe18.lga>

On 2007-10-13, David Tremouilles <david.trem at gmail.com> wrote:
> No issue with pygtk on mac!

If running on top of X11 is no problem. 

> Actually I develop on this platform everyday. Macport take care of the
> installation for me http://www.macports.org/ (Fink should do the work
> too).

In that case I'd recommend kiwi as well

http://www.async.com.br/projects/kiwi/

Dave Cook


From adam at krusty.madoff.com  Thu Oct  4 12:34:35 2007
From: adam at krusty.madoff.com (Adam Lanier)
Date: Thu, 04 Oct 2007 12:34:35 -0400
Subject: RegEx question
In-Reply-To: <496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
Message-ID: <1191515675.19400.39.camel@skinner.madoff.com>

On Thu, 2007-10-04 at 10:58 -0500, Robert Dailey wrote:
> It should also match:
> 
> @param[out] state Some description of this variable
> 
> 
> On 10/4/07, Robert Dailey <rcdailey at gmail.com> wrote:
>         Hi,
>         
>         The following regex (Not including the end quotes):
>         
>         "@param\[in|out\] \w+ "
>         
>         Should match any of the following:
>         
>         @param[in] variable 
>         @param[out] state 
>         @param[in] foo 
>         @param[out] bar 
>         
>         
>         Correct? (Note the trailing whitespace in the regex as well as
>         in the examples)
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list

try @param\[(in|out)\] \w+ 



From python.list at tim.thechases.com  Sat Oct 27 14:28:02 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 27 Oct 2007 13:28:02 -0500
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <1193501811.620522.261570@o80g2000hse.googlegroups.com>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>	<1193438763.190428.134710@q5g2000prf.googlegroups.com>	<87tzodii6i.fsf@benfinney.id.au>	<1193494184.618613.81090@50g2000hsm.googlegroups.com>	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
	<1193501811.620522.261570@o80g2000hse.googlegroups.com>
Message-ID: <47238332.1020502@tim.thechases.com>

>> Even clearer is not to allow octal literals :) Is there *any* use for
>> them?
> 
> The mode argument to os.chmod.

You mean instead of

  import this
  os.chmod(filename, os.R_OK | os.W_OK | os.X_OK)

which explicitly (rather than implicitly) spells it out?

-tkc





From mail at microcorp.co.za  Tue Oct 23 03:37:37 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Tue, 23 Oct 2007 09:37:37 +0200
Subject: Need help parsing with pyparsing...
References: <2WZSi.151640$nh4.105853@fe09.news.easynews.com><1193070904.326690.49360@i38g2000prf.googlegroups.com>
	<1D8Ti.36558$e72.18991@fe07.news.easynews.com>
Message-ID: <013501c8154b$079cb4a0$03000080@hendrik>


"Just Another Victim of the Ambient Morality" <ihatemail.com> wrote:

> FAHRENHEIT 451 2000 Copies Sold
> 1984 Book Of The Year
> 
>     The last example is actually okay but the first one is honestly 
> ambiguous.

hey - Fahrenheit 451 - if my memory serves me correctly, by
Ray Bradbury, is a classic of SF. - firemen burn stuff instead of
putting fires out, and they have a marvellous mechanical dog
equipped with a syringe, for hunting down survivors...

And the title purports to be the temp at which paper spontaneously
combusts.

Worth a read, if you haven't yet.

So 'I' have no problem parsing the title, but I have to agree with the
statement above.

- Hendrik



From paul.nospam at rudin.co.uk  Mon Oct 22 11:49:28 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Mon, 22 Oct 2007 16:49:28 +0100
Subject: Check File Change Every 10 Seconds
References: <27459.1491478079$1193048158@news.gmane.org>
	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
	<mailman.326.1193064368.13605.python-list@python.org>
	<Kq3Ti.5411$aa6.4886@tornado.fastwebnet.it>
Message-ID: <87fy03p2t3.fsf@rudin.co.uk>

Marco Mariani <marco at sferacarta.com> writes:

> Robert Rawlins - Think Blue wrote:
>
>> That certainly looks to be the type of thing that I'm looking to achieve, however, I forgot to mention I'm running this on a Linux platform and not a Win32 one :-( Sorry.
>
> Did you try python-gamin?
>
> "Gamin is a file and directory monitoring system defined to be a
> subset of the FAM (File Alteration Monitor) system."

... or indeed pyinotify?


From kw at codebykevin.com  Mon Oct 15 09:53:40 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Mon, 15 Oct 2007 09:53:40 -0400
Subject: Cross-platform GUI development
In-Reply-To: <mailman.5.1192417321.13605.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>	<mailman.159.1192260728.927.python-list@python.org>	<as0Qi.8294$UN.1208@newsfe24.lga>	<mailman.165.1192269333.927.python-list@python.org>	<5ncb0gFhliojU2@mid.uni-berlin.de>
	<mailman.5.1192417321.13605.python-list@python.org>
Message-ID: <471370E4.6040108@codebykevin.com>

David Tremouilles wrote:
> "crappy",  "waaay better"
> I will not feed the troll...
> Pygtk on mac just do the work for me on a more than satisfying way.
> 


If that's the case, good for you. If your application is open-source, 
then perhaps it's not unreasonable to expect your users to adapt to the 
way you do things--and there are enough Unix-savvy Mac users who won't 
be put off by an X11-based app. (Heck, I use Gimp and Inkscape all the 
time!) However, if you want to develop your application commercially, 
*very* few Mac end users, even Unix-savvy ones, will pay for an 
X11-based tool. I know I've opted not to purchase WingIDE, for instance, 
because it's X11-based (PyGtk in fact) and because I can find plenty of 
Mac-native programming tools. The interface quirks of the free Gimp are 
tolerable because Photoshop is several hundred dollars, but I am not 
willing to pay a few hundred dollars for a commercial tool that has the 
same interface glitches.


Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From paul at boddie.org.uk  Mon Oct 22 06:20:00 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Mon, 22 Oct 2007 03:20:00 -0700
Subject: Splitting URLs
In-Reply-To: <mailman.299.1193018017.13605.python-list@python.org>
References: <13hmp2330pgrua4@corp.supernews.com>
	<mailman.293.1192996519.13605.python-list@python.org>
	<13hnmip3i81kh93@corp.supernews.com>
	<mailman.299.1193018017.13605.python-list@python.org>
Message-ID: <1193048400.556574.95770@i38g2000prf.googlegroups.com>

On 22 Okt, 03:53, Tim Chase <python.l... at tim.thechases.com> wrote:
>
> This seems to be intentional, rather than a bug.  In my
> python2.4/urlparse.py file, there's a uses_netloc list which
> clearly does not have 'mailto' in it.  I can't give an
> explanation/justification for it, but it seems to me (IMHO) that
> there is a netloc involved in a mail address.

As is often the case with the standard library, there are various open
issues around the functionality:

http://bugs.python.org/issue?%40filter=status&status=-1%2C1%2C3&%40search_text=RFC+3986

This proposed module (in the above search results) attempts to
implement RFC 3986:

http://bugs.python.org/issue1500504

I'm not sure whether itools.uri goes as far as you might like:

http://download.ikaaro.org/doc/itools/chapter--uri.html

Either way, after listening to Ron Stephens' most recent Python411
podcast, where he mentions that it's apparently up to the community to
fix the standard library (according to GvR and the core developers),
perhaps there's some demand for a "Python 300" which just cleans up
the standard library in a potentially (but not necessarily) backwards-
incompatible fashion.

Paul



From gagsl-py2 at yahoo.com.ar  Tue Oct 30 02:58:45 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 03:58:45 -0300
Subject: Using msvcrt (in Windows), how to catch Enter key?
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
	<20071029165317.7009D1E4012@bag.python.org>
	<20071029174011.D22641E4029@bag.python.org>
	<op.t0zchnivx6zn5v@gabriel2.softlabbsas.com.ar>
	<20071030002246.B9ED91E401F@bag.python.org>
	<op.t0zlbuo2x6zn5v@gabriel2.softlabbsas.com.ar>
	<20071030044632.B85231E4007@bag.python.org>
Message-ID: <op.t0z0b7cyx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 01:46:19 -0300, Dick Moores <rdm at rcblue.com> escribi?:

> At 06:34 PM 10/29/2007, Gabriel Genellina wrote:

>> The underlying function in Windows is Sleep (or SleepEx) which takes an
>> argument in milliseconds. 0.0001s = 0.1ms and it's rounded to 0.
>
> Ah, useful information. Thank you. Where'd you learn that?

Microsoft's Windows API Reference:
http://msdn2.microsoft.com/en-us/library/aa383749.aspx

The Sleep function is at  
http://msdn2.microsoft.com/en-us/library/ms686298.aspx

-- 
Gabriel Genellina



From rob.mcmullen at gmail.com  Sun Oct 28 01:00:17 2007
From: rob.mcmullen at gmail.com (Rob McMullen)
Date: Sun, 28 Oct 2007 05:00:17 -0000
Subject: multi-protocol url-based IO -- pure python kioslave-like module?
In-Reply-To: <1193505186.813473.108330@o80g2000hse.googlegroups.com>
References: <1193502384.553887.30370@i38g2000prf.googlegroups.com>
	<1193505186.813473.108330@o80g2000hse.googlegroups.com>
Message-ID: <1193547617.579732.299980@q5g2000prf.googlegroups.com>

On Oct 27, 10:13 am, Paul Boddie <p... at boddie.org.uk> wrote:
> Something like itools.vfs, perhaps?
>
> http://www.ikaaro.org/itools
> http://download.ikaaro.org/doc/itools/Chapter--VFS.html

Thanks for the pointer -- I hadn't run across itools before.  It also
gave me some new ideas for google search words and found

http://wiki.python.org/moin/CodingProjectIdeas/FileSystemVirtualization

with a few more ideas.

Thanks for the help.

Rob



From bignose+hates-spam at benfinney.id.au  Mon Oct 29 00:25:44 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 15:25:44 +1100
Subject: PEP 299 and unit testing
References: <871wbehef8.fsf@benfinney.id.au>
	<9tmdnf3x8fMezLjanZ2dnUVZ_oninZ2d@comcast.com>
Message-ID: <87k5p6fsxj.fsf@benfinney.id.au>

Steven Bethard <steven.bethard at gmail.com> writes:

> Ben Finney wrote:
> > What it doesn't allow is for the testing of the 'if __name__ ==
> > "__main__":' clause itself. No matter how simple we make that,
> > it's still functional code that can contain errors, be they
> > obvious or subtle; yet it's code that *can't* be touched by the
> > unit test (by design, it doesn't execute when the module is
> > imported), leading to errors that won't be caught as early or
> > easily as they might.
> 
> You could always use runpy.run_module.

For values of "always" that include Python 2.5, of course. (I'm still
coding to Python 2.4, until 2.5 is more widespread.)

Thanks! I was unaware of that module. It does seem to nicely address
the issue I discussed.

-- 
 \         "Pinky, are you pondering what I'm pondering?" "I think so, |
  `\    Brain, but Zero Mostel times anything will still give you Zero |
_o__)                               Mostel."  -- _Pinky and The Brain_ |
Ben Finney


From mail at microcorp.co.za  Tue Oct 23 02:53:01 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Tue, 23 Oct 2007 08:53:01 +0200
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<5o3jalFl0n43U1@mid.uni-berlin.de>	<1193056647.416562.36150@q3g2000prf.googlegroups.com>	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>	<1193057676.680959.71780@v23g2000prn.googlegroups.com>	<1193064348.526006.183080@q5g2000prf.googlegroups.com>	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it><mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
Message-ID: <013201c8154b$0677bca0$03000080@hendrik>

 "Marco Mariani" <marc....arta.com> wrote:


> I don't see how my answer is in any way worse than those based on 
> lambda. Maybe I'm just envious because when I was his age I couldn't 
> google for answers. He should at least be able to do that, shouldn't he?
> But wait. That would mean understanding what a factorial is. That would 
> require a second search, or a textbook, or an understanding of 
> arithmetics before programming with or without recursion. Should we 
> blame the teachers?

Yes.  And burn their cars to get their attention!

Asking someone to write a factorial algorithm before he knows WTF a 
factorial "is", is either insane, or the ultimate demonstration of deliberate 
lack of cooperation and coordination between departments.
I feel kind of strongly about this ever since, as a student, the physics people
expected me to use mathematics that I had not been taught yet...

 ;-)

I shall try to refrain from commenting on the concept of introducing
recursion into a first course in CS - I am too much tainted by my ability
to mentally "see" the stack growth in a small processor to be qualified 
to comment.

- Hendrik



From duncan.booth at invalid.invalid  Fri Oct 26 10:00:14 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Oct 2007 14:00:14 GMT
Subject: tuples within tuples
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
Message-ID: <Xns99D598A08F8B2duncanbooth@127.0.0.1>

korovev76 at gmail.com wrote:

> 
> [cut]
>>
>> Without a better example or explanation of what you are trying to do
>> it is difficult
> 
> You're right.
> Actually i'm parsing an xml file using pyrxp, which returns something
> like this:
> (tagName, attributes, list_of_children, spare)
> Where list_of_children might "be a list with elements that are 4-
> tuples or plain strings".
> 
> In other terms, if I have something like this:
> ('<tagA><tagB>bobloblaw</tagB></tagA>')
> it's parsed like this:
> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)...
> 
> Fact is that my xml is much more deep... and I'm not sure how to
> resolve it
> 
Probably you want some sort of visitor pattern.

e.g. (warning untested pseudo code ahead)

def walkTree(tree, visitor):
    tag, attrs, children, spare = tree
    fn = getattr(visitor, 'visit_'+tag, None)
    if not fn: fn = visitor.visitDefault
    fn(tag, attrs, children, spare)

    for child in children:
        if isinstance(child, tuple):
            walktree(child, visitor)
        else:
            visitor.visitContent(child)

class Visitor:
   def visitDefault(self, t, a, c, s): pass
   def visitContent(self, c): pass

... then when you want to use it you subclass Visitor adding appropriate 
visit_tagA, visit_tabB methods for the tags which interest you. You walk 
the tree, and store whatever you want to save in your visitor subclass 
instance.



From deets at nospam.web.de  Mon Oct 22 11:02:08 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 17:02:08 +0200
Subject: Building sparc64 32/64-bit Python
References: <20071022165459.476c7a07@cube.tz.axivion.com>
Message-ID: <5o3sbgFl2g0hU1@mid.uni-berlin.de>

Stefan Bellon wrote:

> Hi,
> 
> I'm trying to build a Sun Solaris Version of Python from the source so
> that both, 32-bit and 64-bit libraries are present.
> 
> I can successfully build a 32-bit version in one directory and a 64-bit
> version in another directory. What I'd like to do is to build a version
> that has the 64-bit library in a sparcv9 directory but shares the other
> Python libraries that are ELF-code independent.
> 
> Is this possible or do I really have to install two complete but
> separate Pythons although most of the files are the same?

It should be possible to create a independent site-packages directory that
contains the python-library and then tinker with both installations setting
that directory as part of the python-path (look at *pth-files in the
site-packages directory to get an idea how that works)

Another question is if that's advisable. It certainly won't become part of
the standard installation scripts, and in the end you save how much - 8MB
or so?

Diez



From duncan.booth at invalid.invalid  Mon Oct 22 08:50:49 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 22 Oct 2007 12:50:49 GMT
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <Xns99D18CCFC2430duncanbooth@127.0.0.1>

Py-Fun <lorna.burns at gmail.com> wrote:

> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.
> 
This version avoids doing anything fancier than adding 1, so it should be 
simple enough for anyone:

def factorial(e):
    a = 1
    for b in range(e):
        c = 0
        for j in range(b, -1, -1):
            for d in range(a):
                c += 1
        a = c
    return a




From stef.mientki at gmail.com  Wed Oct  3 17:39:49 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Wed, 03 Oct 2007 23:39:49 +0200
Subject: Howto Launch a windows application ?
Message-ID: <47040C25.7040303@gmail.com>

hello,

I'm trying to launch a windows application,
but as many others on this list, I've some trouble.
I read some other threads about this topic,
but sorry, I still don't understand all this (never heard of pipes).

When I use a batch file, I can launch the bat-file from python,
and the windows application launched from the batchfile is run perfectly.

Now when I try to run the same windows application from Popen or call,
nothing happens (or at least it's very fast and produces not the 
expected output).

Please enlighten me, preferable in "windows-terminology"  ;-)

thanks,
Stef Mientki

from subprocess import *

cmd =[]
cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
cmd.append ( '-long-start' )
cmd.append ( '-d')
cmd.append ( '-clear' )
cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
cmd.append ( 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )

# DOESN'T WORK
result = call ( cmd )

# Both Popen and call work
cmd = [ 'd:\\data_actueel\\d7_test_browser\\JALcc.bat' ]
#output = Popen ( cmd )
result = call ( cmd )
print result



From MDiPierro at cti.depaul.edu  Fri Oct 12 22:23:55 2007
From: MDiPierro at cti.depaul.edu (Massimo Di Pierro)
Date: Fri, 12 Oct 2007 21:23:55 -0500
Subject: Yet another comparison of Python Web Frameworks
Message-ID: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>

Hello everybody,

I just joined this mailing list. Thanks for your comments about gluon.

I have posted a short video about it and I am planning to make more  
over the week-end.

http://www.youtube.com/watch?v=VBjja6N6IYk

About some of your comments:
- the most complex modules (like html and sql ones) have doctests.
- the executable versions (win and mac) come with python2.5. Running  
from source code does not require 2.5 but you probably want sqlite3.
- so far I support sqlite3 and postgresql, not mysql (just because I  
do not use it and had no time for testing it).
- yes, there are typos in the documentation. Please point them out to  
me so that I can fix them.
- I am sure there are some minor bugs I am not aware of but as far I  
tested, it work.
- If you report bugs to me I promise to fix them in 48hrs.
- please make sure you have the latest version.

I very much appreciate comments about gluon (good and bad). Please  
send me more so that I can improve it.

There will be two talks in chicago about gluon next week: at DePaul  
Linux Users Group on Thursday evening and at the Chicago Linux Users  
Group on Saturday afternoon. I will try record them and post them.

Massimo

P.S. Michele Simionato. I have heard your name before? Is it possible  
we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist  
and there is not many of us.






From kyosohma at gmail.com  Fri Oct 26 17:01:43 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 26 Oct 2007 21:01:43 -0000
Subject: how to/help installing impure packages
In-Reply-To: <1193420159.513950.177000@y27g2000pre.googlegroups.com>
References: <1193420159.513950.177000@y27g2000pre.googlegroups.com>
Message-ID: <1193432503.149969.118070@22g2000hsm.googlegroups.com>

On Oct 26, 12:35 pm, owl <john_now... at carleton.ca> wrote:
> I love easy_install.
>
> I love watching it search and complete.
> It's when it doesn't complete that causes me grief.
> I don't program a lot these days and am relatively new to python but I
> often wind up installing packages on both unix and windows machines
> and often the 'build' part of the install fails with not being able to
> find the compiler or compile problems.
>
> If there are any articles/pointers that talk about this, i.e. how to
> troubleshoot, I'd love to know.
>
> If I was writing such an article I'd start with:
> - how easy_install uses distutils (even this is an assumption on my
> part)
> - where it looks in the env. for stuff on both unix/linux/windows
> - what files to tweak to help it find stuff if your env. is different.
> - i.e. can I config some file to have packages not try and compile but
> use pure python if possible?
> - i.e. w/o speedups
> - how to work around problems such as easy_install failing because a
> site is down
> - i.e. how to manually download, 'unpack' & 'build'
> - since packages fail to build, how to set things up to download &
> keep things around when they fail so you can tinker with it until you
> get it working!
>
> I love python, and nothing against impure packages, but when they
> cause problems it starts to 'tarnish the dream' of an agnostic
> language.
>
> Thoughts?

You can check out the "official" website on Easy Install:

http://peak.telecommunity.com/DevCenter/EasyInstall

More informative links follow:

http://www.ibm.com/developerworks/linux/library/l-cppeak3.html
http://wiki.vpslink.com/index.php?title=Python_easy_install
http://gnosis.cx/publish/programming/charming_python_b23.html

As for doing your own compiling, I have some instructions for using
the open source compiler, MinGW, on my website: http://www.pythonlibrary.org/distribution.htm

I should research this and add it to the page. But if you come up with
any tips or tricks, let me know and I'll put them on there.

Mike



From grante at visi.com  Thu Oct 18 09:09:24 2007
From: grante at visi.com (Grant Edwards)
Date: Thu, 18 Oct 2007 13:09:24 -0000
Subject: Best way to generate alternate toggling values in a loop?
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<1192693425.381102.141680@i38g2000prf.googlegroups.com>
Message-ID: <13hemo4beahm43a@corp.supernews.com>

On 2007-10-18, Gerard Flanagan <grflanagan at yahoo.co.uk> wrote:
> On Oct 18, 1:55 am, Debajit Adhikary <debaj... at gmail.com> wrote:
>> I'm writing this little Python program which will pull values from a
>> database and generate some XHTML.
>>
>> I'm generating a <table> where I would like the alternate <tr>'s to be
>>
>> <tr class="Even">
>> and
>> <tr class="Odd">
>>
>> What is the best way to do this?
>>
>
>
> from itertools import izip
>
> def toggle(start=True):
>     flag = start
>     while 1:
>         flag = not flag
>         yield flag

I like the solution somebody sent me via PM:

def toggle():
    while 1:
        yield "Even"
        yield "Odd"

-- 
Grant Edwards                   grante             Yow! Are we THERE yet?
                                  at               
                               visi.com            


From Graham.Dumpleton at gmail.com  Tue Oct 16 19:39:56 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Tue, 16 Oct 2007 23:39:56 -0000
Subject: Problem calling python modules from python apache handler
In-Reply-To: <1192572048.452439.186810@i13g2000prf.googlegroups.com>
References: <1192572048.452439.186810@i13g2000prf.googlegroups.com>
Message-ID: <1192577996.665279.220150@t8g2000prg.googlegroups.com>

On Oct 17, 8:00 am, mannewalis <justinagra... at gmail.com> wrote:
> Hi,
>
> I have the following setup...
>
> Apache 2.2.3, Python 2.5 and mod_python 3.3.1
>
> I have configured apache to call a python script when fetching .py
> resources...so far so good... I did the hello world script in the
> mod_python docs and it works great.
>
> Now when I want to add some meat and potatoes and call some other
> python code from the script things get pear shaped.. I try to import
> the module I want, but it never can find it... I always get the
> error...
>
> ImportError: No module named ???
>
> no matter what I do. I have moved my python modules around, to no
> avail. I've even put them in the same directory as the handler script
> and even that doesn't work.
>
> I am fairly new to python, so I expect there is some search-path-
> fu(tm) that I am presently unaware of. Can anybody explain how to get
> this working?
>
> Thanks
> Justin
>
> For example...
>
> I have the following folders...
>
> \python25\lib\test\
>
> with the script mytest.py
>
> In my apache hander I try to import this script
>
> from test import mytest

First, done call your package directory 'test'. There is a module in
Python called that and if it finds the Python module first it will not
find your package.

Second, you can't dump Python packages in the same directory as your
mod_python handler code file, they will not be found. Place them
outside of the Apache document tree and use PythonPath directive as
described in documentation to indicate where they are located.

Also ensure you read documentation for import_module() in:

  http://www.modpython.org/live/current/doc-html/pyapi-apmeth.html

This covers issues around module loading in mod_python.

Graham


> and get the error..
>
> MOD_PYTHON ERROR
>
> ProcessId:      4988
> Interpreter:    'localhost'
>
> ServerName:     'localhost'
> DocumentRoot:   'C:/Program Files/EasyPHP 2.0b1/www'
>
> URI:            '/foo.py'
> Location:       None
> Directory:      'C:/Program Files/EasyPHP 2.0b1/www/'
> Filename:       'C:/Program Files/EasyPHP 2.0b1/www/foo.py'
> PathInfo:       ''
>
> Phase:          'PythonHandler'
> Handler:        'query'
>
> Traceback (most recent call last):
>
>   File "C:\Python25\lib\site-packages\mod_python\importer.py", line
> 1537, in HandlerDispatch
>     default=default_handler, arg=req, silent=hlist.silent)
>
>   File "C:\Python25\lib\site-packages\mod_python\importer.py", line
> 1202, in _process_target
>     module = import_module(module_name, path=path)
>
>   File "C:\Python25\lib\site-packages\mod_python\importer.py", line
> 296, in import_module
>     log, import_path)
>
>   File "C:\Python25\lib\site-packages\mod_python\importer.py", line
> 680, in import_module
>     execfile(file, module.__dict__)
>
>   File "C:\Program Files\EasyPHP 2.0b1\www\query.py", line 2, in
> <module>
>     from test import mytest
>
> ImportError: No module named test
>
> MODULE CACHE DETAILS
>
> Accessed:       Tue Oct 16 14:50:22 2007
> Generation:     4
>
> _mp_9bae44ea3d2a76746732f5d982e3e12d {
>   FileName:     'C:\\Program Files\\EasyPHP 2.0b1\\www\\query.py'
>   Instance:     13 [RELOAD]
>   Generation:   4 [ERROR]
>   Modified:     Mon Oct 15 19:54:19 2007
>   Imported:     Mon Oct 15 19:50:44 2007
>
> }




From drobinow at gmail.com  Sun Oct  7 12:21:31 2007
From: drobinow at gmail.com (drobinow at gmail.com)
Date: Sun, 07 Oct 2007 09:21:31 -0700
Subject: How to create a file on users XP desktop
In-Reply-To: <13ggr9laeo5kla3@corp.supernews.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<13ggr9laeo5kla3@corp.supernews.com>
Message-ID: <1191774091.751309.139260@57g2000hsv.googlegroups.com>

On Oct 7, 1:24 am, Scott David Daniels <Scott.Dani... at Acm.Org> wrote:
> goldtech wrote:
> > ... I want the new file's location to be on the user's desktop in
> > a Windows XP environment....
>
> How about:
>      import os.path
>      handle = open(os.path.expanduser(r'~\DeskTop\somefile.txt'), 'w')
>      ...

 That doesn't work on my system.
 "~" uses the HOME environment variable if set, otherwise uses
HOMEDRIVE and HOMEPATH which is what I posted before.  See Lib/
ntpath.py in a recent source distribution.
 In my case I set HOME to a path without spaces in it, to simplify my
use of Emacs and Cygwin.



From hniksic at xemacs.org  Wed Oct 17 09:57:35 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 17 Oct 2007 15:57:35 +0200
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net> <5nmcuhFiva37U2@mid.uni-berlin.de>
Message-ID: <87wstl4ze8.fsf@mulj.homelinux.net>

Marc 'BlackJack' Rintsch <bj_666 at gmx.net> writes:

> Simply not to introduce special cases I guess.  If you write ``x.a
> += b`` then `x.a` will be rebound whether an `a.__iadd__()` exists
> or not.  Otherwise one would get interesting subtle differences with
> properties for example.  If `x.a` is a property that checks if the
> value satisfies some constraints ``x.a += b`` would trigger the set
> method only if there is no `__iadd__()` involved if there's no
> rebinding.

Note that such constraint is easily invalidated simply with:

foo = x.a
foo += b


From bj_666 at gmx.net  Fri Oct 12 02:39:00 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 12 Oct 2007 06:39:00 GMT
Subject: remove header line when reading/writing files
References: <1192143175.137620.319470@q5g2000prf.googlegroups.com>
Message-ID: <5n8j44Fh28v6U1@mid.uni-berlin.de>

On Thu, 11 Oct 2007 22:52:55 +0000, RyanL wrote:

> I'm a newbie with a large number of data files in multiple
> directories.  I want to uncompress, read, and copy the contents of
> each file into one master data file.  The code below seems to be doing
> this perfectly.  The problem is each of the data files has a header
> row in the first line, which I do not want in the master file.  How
> can I skip that first line when writing to the master file?  Any help
> is much appreciated.  Thank you.

Untested version with `itertools.islice()`:

import glob
import gzip
import os
from itertools import islice


def main():
    zipdir = 'G:/Research/Data/'
    outfilename = 'G:/Research/Data/master_data.txt'
    out_file = open(outfilename, 'w')
    for name in os.listdir(os.curdir):
        if os.path.isdir(name):
            os.chdir(name)
            for zip_name in glob.glob('*.gz'):
                in_file = gzip.GzipFile(zip_name, 'r')
                out_file.writelines(islice(in_file, 1, None))
                in_file.close()
            os.chdir(os.pardir)
    out_file.close()

Ciao,
	Marc 'BlackJack' Rintsch


From ynotssor at example.org  Mon Oct 15 14:24:38 2007
From: ynotssor at example.org (ynotssor)
Date: Mon, 15 Oct 2007 11:24:38 -0700
Subject: Desperately need help for html to LaTeX conversion
References: <1192471080.796928.230030@k35g2000prh.googlegroups.com>
Message-ID: <5nhpjdFihprjU1@mid.individual.net>

In news:1192471080.796928.230030 at k35g2000prh.googlegroups.com,
vasan999 at hotmail.com <vasan999 at hotmail.com> wrote:

> The perl one does not run due to path problems.

Nothing could be easier to fix than that.




From lasses_weil at klapptsowieso.net  Mon Oct 29 06:46:25 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Mon, 29 Oct 2007 11:46:25 +0100
Subject: ANN: Veusz 1.0 - a scientific plotting package
In-Reply-To: <fg4d00$1t4$1@gemini.csx.cam.ac.uk>
References: <fg49eq$nnh$1@gemini.csx.cam.ac.uk>
	<4725b164$0$4359$9b4e6d93@newsspool4.arcor-online.net>
	<fg4d00$1t4$1@gemini.csx.cam.ac.uk>
Message-ID: <4725ba01$0$16671$9b4e6d93@newsspool3.arcor-online.net>

Jeremy Sanders wrote:
> Wildemar Wildenburger wrote:
> 
>> Not that I don't value your effort, but why another plotting package
>> while we have pyx and matplotlib already?
> 
> In addition to the Python based scripting command line and embedding
> interface, it has a powerful graphical user interface for constructing
> plots and importing data.  Neither matplotlib or pyx have this.
> This is the main feature. It was originally intended to be mainly
> command-line based, but I've found the GUI to be my main way of using it.
> 
> At the time of the first release of Veusz, and for quite long after,
> matplotlib was too primitive to use as a backend for Veusz (see previous
> threads on this subject). Maybe that has changed now, but IMHO Veusz output
> still looks better.
> 
> Jeremy
> 

Oh, OK. I though it was a library. I now see that it is an actual 
application. Sorry to have bothered you :)

Good luck with that!


/W


From phd at phd.pp.ru  Tue Oct 30 11:27:46 2007
From: phd at phd.pp.ru (Oleg Broytmann)
Date: Tue, 30 Oct 2007 18:27:46 +0300
Subject: SQLObject 0.8.6
Message-ID: <20071030152746.GF1327@phd.pp.ru>

Hello!

I'm pleased to announce the 0.8.6 release of SQLObject.


What is SQLObject
=================

SQLObject is an object-relational mapper.  Your database tables are described
as classes, and rows are instances of those classes.  SQLObject is meant to be
easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB (also
known as SAPDB).


Where is SQLObject
==================

Site:
http://sqlobject.org

Development:
http://sqlobject.org/devel/

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.8.6

News and changes:
http://sqlobject.org/News.html


What's New
==========

News since 0.8.5
----------------

Bug Fixes
~~~~~~~~~

* Remove 'limit' from SelectResults after setting start/end so .clone()
  never sees limit again.

* Fixed a bug in sqlbuilder._LikeQuoted() - call sqlrepr() on the
  expression to escape single quotes if the expression is a string.

* Fixed StringCol and UnicodeCol: use sqlType with MSSQL.

* Fixed startswith/endswith/contains for UnicodeCol.

Other Changes
~~~~~~~~~~~~~

* Removed SelectResults.__nonzero__, which was a design mistake. Raising an
  exception in __nonzero__() is inconsistent with other iterators
  (bool(iter([])) => True).

* Changed the default value for 'varchar' in BLOBColumns from 'auto' to False
  (so that the default type for the columns in  MySQL is BLOB, not TEXT).

* Changed the implementation type in BoolCol under MySQL from TINYINT to
  BOOL (which is a synonym for TINYINT(1)).

For a more complete list, please see the news:
http://sqlobject.org/News.html

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.


From laurent.pointal at laposte.net  Tue Oct 30 04:26:43 2007
From: laurent.pointal at laposte.net (Laurent Pointal)
Date: 30 Oct 2007 08:26:43 GMT
Subject: How python writes text into another windows application
References: <mailman.608.1193694836.13605.python-list@python.org>
Message-ID: <4726eac2$0$27384$ba4acef3@news.orange.fr>

Le Mon, 29 Oct 2007 21:53:47 +0000, Meitham a ?crit?:

> Hi,
> 
> I am trying to write a simple program that reads data from a source file
> (Excel sheet, XML file or text file) and then write the data into
> another application by pasting the data into the applications fields,
> and jumps from one field to another by writing \t tab.
> 
> My question is, how do I write the data into another application fields.
> My target application is the TNT consignment manager. I asked TNT for
> their API to make my life easier but they refused to release it :(. I
> have a software that uses the same way I am looking after to fill in
> application fields, it is the QuickAddress. Any idea how to achieve
> that?
> 
> Thanks
> 
> Meitham

If you run Windows, try with pywinauto, it should have the tools you need 
to control an external application via its gui.


http://sourceforge.net/projects/pywinauto





-- 
Laurent POINTAL - laurent.pointal at laposte.net


From phd at phd.pp.ru  Tue Oct 30 11:33:05 2007
From: phd at phd.pp.ru (Oleg Broytmann)
Date: Tue, 30 Oct 2007 18:33:05 +0300
Subject: SQLObject 0.9.2
Message-ID: <20071030153305.GJ1327@phd.pp.ru>

Hello!

I'm pleased to announce the 0.9.2 release of SQLObject.


What is SQLObject
=================

SQLObject is an object-relational mapper.  Your database tables are described
as classes, and rows are instances of those classes.  SQLObject is meant to be
easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB (also
known as SAPDB).


Where is SQLObject
==================

Site:
http://sqlobject.org

Development:
http://sqlobject.org/devel/

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.9.2

News and changes:
http://sqlobject.org/News.html


What's New
==========

News since 0.9.1
----------------

Bug Fixes
~~~~~~~~~

* Remove 'limit' from SelectResults after setting start/end so .clone()
  never sees limit again.

* Fixed a bug in sqlbuilder._LikeQuoted() - call sqlrepr() on the
  expression to escape single quotes if the expression is a string.

* Fixed a bug in Versioning - do not copy "alternateID" and "unique"
  attributes from the versioned table.

* Fixed a misspelled 'zerofill' option's name.

* Fixed StringCol and UnicodeCol: use sqlType with MSSQL.

* Fixed startswith/endswith/contains for UnicodeCol.

* Fixed bugs in SQLiteConnection.guessColumn().

Other Changes
~~~~~~~~~~~~~

* Removed SelectResults.__nonzero__, which was a design mistake. Raising an
  exception in __nonzero__() is inconsistent with other iterators
  (bool(iter([])) => True).

* Changed the default value for 'varchar' in BLOBColumns from 'auto' to False
  (so that the default type for the columns in  MySQL is BLOB, not TEXT).

* Changed the implementation type in BoolCol under MySQL from TINYINT to
  BOOL (which is a synonym for TINYINT(1)).

For a more complete list, please see the news:
http://sqlobject.org/News.html

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.


From mail at gedankenkonstrukt.de  Wed Oct 17 09:31:36 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Wed, 17 Oct 2007 15:31:36 +0200
Subject: Inheriting automatic attributes initializer considered harmful?
In-Reply-To: <mailman.121.1192626814.13605.python-list@python.org>
References: <ff4rc5$ill$1@newsreader2.netcologne.de>
	<mailman.121.1192626814.13605.python-list@python.org>
Message-ID: <ff52rp$3gc$1@newsreader2.netcologne.de>

Andrew Durdin:
>> Is there already a standard lib class doing (something like) this?
>> Or is it even harmful to do this?
> 
> It depends on your kwargs and where they're coming from.

They should come from my own code.

> Does SQLAlchemy let you get a list of column names?

Generellay, it does.
But it also generates some additional attributes dynamically that are
not directly defined as columns.
So, restricting the attributes to the columns would be too strict.

Thanks!
-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From paul.hankin at gmail.com  Sun Oct 14 06:58:42 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sun, 14 Oct 2007 10:58:42 -0000
Subject: Last iteration?
In-Reply-To: <1192345242.025455.294870@i13g2000prf.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<1192345242.025455.294870@i13g2000prf.googlegroups.com>
Message-ID: <1192359522.623770.257380@e9g2000prf.googlegroups.com>

On Oct 14, 8:00 am, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 12, 5:58 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
>
>
>
> > Hello,
> > can I determine somehow if the iteration on a list of values is the last
> > iteration?
>
> > Example:
>
> > for i in [1, 2, 3]:
> >    if last_iteration:
> >       print i*i
> >    else:
> >       print i
>
> > that would print
>
> > 1
> > 2
> > 9
>
> > Can this be acomplished somehow?
>
> > Thanks,
>
> > Florian
>
> Maybe it's a leftover from my C++ days, but I find the iteration-based
> solutions the most appealing.  This is a refinement of the previous
> post by Diez Roggisch.  The test method seems to match your desired
> idiom pretty closely:
>
> def signal_last(lst):
>     last2 = None
>     it = iter(lst)
>     try:
>         last = it.next()
>     except StopIteration:
>         last = None
>     for last2 in it:
>         yield False, last
>         last = last2
>     yield True, last

This yields a value when the iterator is empty, which Diez's solution
didn't. Logically, there is no 'last' element in an empty sequence,
and it's obscure to add one. Peter Otten's improvement to Diez's code
looks the best to me: simple, readable and correct.

--
Paul Hankin



From wongpl0503 at yahoo.com.hk  Mon Oct  1 00:13:19 2007
From: wongpl0503 at yahoo.com.hk (Ling)
Date: Sun, 30 Sep 2007 21:13:19 -0700
Subject: boost.python error with DirectX
Message-ID: <1191211999.508572.146380@r29g2000hsg.googlegroups.com>

I am using boost.python to wrap C++ function which includes
directmusic libraries to simply play the midi, but lots of linkage
errors "error LNK2001: unresolved external symbol". I wonder if it is
possible to work with DirectX - directmusic libs.  Are there any ways
to wrap it?

*********************compilation errors *************************
 msvc.link.dll bin\msvc-7.1\debug\threading-multi\playmusic.pyd bin
\msvc-7.1\debu
g\threading-multi\playmusic.lib
   Creating library bin\msvc-7.1\debug\threading-multi\playmusic.lib
and object
bin\msvc-7.1\debug\threading-multi\playmusic.exp
playmusic.obj : error LNK2001: unresolved external symbol
_GUID_PerfMasterTempo
playmusic.obj : error LNK2019: unresolved external symbol
__imp__CoUninitialize@
0 referenced in function "void __cdecl `anonymous
namespace'::StartPlay(void)" (
?StartPlay@?A0xc386fc44@@YAXXZ)
playmusic.obj : error LNK2001: unresolved external symbol
_CLSID_DirectMusicSegm
ent
playmusic.obj : error LNK2001: unresolved external symbol
_IID_IDirectMusicSegme
nt8
playmusic.obj : error LNK2001: unresolved external symbol
_GUID_DirectMusicAllTy
pes
playmusic.obj : error LNK2001: unresolved external symbol
_CLSID_DirectMusicPerf
ormance
playmusic.obj : error LNK2001: unresolved external symbol
_IID_IDirectMusicPerfo
rmance8
playmusic.obj : error LNK2019: unresolved external symbol
__imp__CoCreateInstanc
e at 20 referenced in function "void __cdecl `anonymous
namespace'::StartPlay(void)
" (?StartPlay@?A0xc386fc44@@YAXXZ)
playmusic.obj : error LNK2001: unresolved external symbol
_CLSID_DirectMusicLoad
er
playmusic.obj : error LNK2001: unresolved external symbol
_IID_IDirectMusicLoade
r8
playmusic.obj : error LNK2019: unresolved external symbol
__imp__CoInitialize at 4
referenced in function "void __cdecl `anonymous
namespace'::StartPlay(void)" (?S
tartPlay@?A0xc386fc44@@YAXXZ)
bin\msvc-7.1\debug\threading-multi\playmusic.pyd : fatal error
LNK1120: 11 unres
olved externals

        call "C:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\bin\vcvars3
2.bat"  >nul
link /NOLOGO /INCREMENTAL:NO /DLL /DEBUG /subsystem:console /out:"bin
\msvc-7.1\d
ebug\threading-multi\playmusic.pyd" /IMPLIB:"bin\msvc-7.1\debug
\threading-multi\
playmusic.lib" /LIBPATH:"C:\Panda3D-1.4.0\python\libs"   @"bin
\msvc-7.1\debug\th
reading-multi\playmusic.pyd.rsp"
        if %ERRORLEVEL% NEQ 0 EXIT %ERRORLEVEL%
        if exist "bin\msvc-7.1\debug\threading-multi
\playmusic.pyd.manifest" (
            mt -nologo -manifest "bin\msvc-7.1\debug\threading-multi
\playmusic.p
yd.manifest" "-outputresource:bin\msvc-7.1\debug\threading-multi
\playmusic.pyd;2
"
        )

...failed msvc.link.dll bin\msvc-7.1\debug\threading-multi
\playmusic.pyd bin\msv
c-7.1\debug\threading-multi\playmusic.lib...
...removing bin\msvc-7.1\debug\threading-multi\playmusic.lib
...failed updating 2 targets...

******************************************compiliation
errors**************

In C++, Inside "playmusic.cpp", it needs to include following
DirectMusic libs.  The link errors mainly related to directmusic
stuff.

#include <dmusicc.h>
#include <dmusici.h>
#include <dmusicf.h>

************* playmusic.cpp*************************

#include <boost/python/class.hpp>
#include <boost/python/module.hpp>
#include <boost/python/def.hpp>
#include "boost/python/detail/wrap_python.hpp"

//using namespace std;
#include <windows.h>
#include <dmusicc.h>
#include <dmusici.h>
#include <dmusicf.h>

namespace {
//-----------------------------------------------------------------------------
// Defines, constants, and global variables
//-----------------------------------------------------------------------------
void StartPlay();

IDirectMusicLoader8*      g_pLoader         = NULL;
IDirectMusicPerformance8* g_pPerformance    = NULL;
IDirectMusicSegment8*     g_pSegment        = NULL;
FLOAT fTempo;

void StartPlay() {


    // Initialize COM
    CoInitialize(NULL);

    // Create loader object
    CoCreateInstance( CLSID_DirectMusicLoader, NULL, CLSCTX_INPROC,
                      IID_IDirectMusicLoader8, (void**)&g_pLoader );

.............
.............
namespace python = boost::python;

BOOST_PYTHON_MODULE(playmusic)
{
    python::def("StartPlay", StartPlay);
}

*********** playmusic.cpp***************************

The code in void StartPlay() inside "playmusic.cpp" can be compiled
and executed successfully before in C++, so I extract that part.
Any ideas?  Thanks so much for your help



From gagsl-py2 at yahoo.com.ar  Sun Oct 28 13:14:28 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 28 Oct 2007 14:14:28 -0300
Subject: modifying __class__
References: <19ac19520710260025w4a871cfekcc8f01a6d6143f17@mail.gmail.com>
	<cfb58d850710260049p4727f9afsdd9bd7872073a0ce@mail.gmail.com>
Message-ID: <op.t0w3ifh6x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Fri, 26 Oct 2007 04:49:37 -0300, Evan Klitzke <evan at yelp.com> escribi?:

> On 10/26/07, Piyush Jain <piyush.subscription at gmail.com> wrote:
>> Hi,
>> Itis possible to change the class of an object by assigning new value to
>> __class__
>> Is it possible to call my module when it is done.
>> For example,
>> object = ClassA()
>>
>> object.__class__ = classB # I want to call my method when this  
>> statement is
>> executed.
>
> Here's an example of how to do this:
>
> class A(object):
>         def __init__(self):
>                 self._class = A
>
>         def getclass(self):
>                 return self._class
>
>         def setclass(self, x):
>                 print 'setting __class__ to %s' % x
>                 self._class = x
>
>         __class__ = property(getclass, setclass)
>
> class B(object):
>         pass
>
> if __name__ == '__main__':
>         a = A()
>         print 'Running a.__class__ = B'
>         a.__class__ = B
>
>         print 'a.__class__ = %s' % a.__class__

Sorry but this is unnecesarily complicated and almost useless. Ok, using a  
property you change the __class__ attribute, but this has no effect on the  
object behavior. type(a) is still A, and B is not overriding any of A  
methods.

>> I want to do it in a general way. For ex. , whenever __class__ is  
>> changed
>> for any object instance (of different classes), my own function is  
>> called.
>> How should I do it ?
> I think you can do this using a metaclass, and then have all of your
> classes inherit from the metaclass rather than object, but I don't
> really have any experience doing this.

Perhaps, but using a metaclass is still too much complicated for this task.
I assume the OP doesn't have a lot of __class__ assignments all along the  
code, so keeping the syntax x.__class__ = another_class is not a  
requirement.
So, just define a function change_class wich assigns the new class to  
__class__ and additionally does whatever is needed:

py> class A(object):
...     def foo(self):
...         print "Inside A.foo"
...
py> class B(object):
...     def foo(self):
...         print "Inside B.foo"
...
py> def change_class(inst, newclass):
...     print "Look ma! Changing class from %s to %s" % (
...              inst.__class__, newclass)
...     inst.__class__ = newclass
...
py> x = A()
py> x.foo()
Inside A.foo
py> type(x)
<class '__main__.A'>
py> change_class(x, B)
Look ma! Changing class from <class '__main__.A'> to <class
'__main__.B'>
py> x.foo()
Inside B.foo
py> type(x)
<class '__main__.B'>

change_class might be a method of A instead, but I don't see any gain on  
it.

-- 
Gabriel Genellina



From ganesh.borse at credit-suisse.com  Tue Oct 30 00:01:57 2007
From: ganesh.borse at credit-suisse.com (Borse, Ganesh)
Date: Tue, 30 Oct 2007 12:01:57 +0800
Subject: How to find if a string contains another string
Message-ID: <F444CAE5E62A714C9F45AA292785BED327C3BEC2@esng11p33001.sg.csfb.com>

Hi,

Am new to python.
May someone please help me know this?

How can we check whether one big string contains another small string?

E.g. 
bigstring="python anaconda boa cobra"
smallone="boa"

If 0 == contains(bigstring,smallone):
        print "Yes, boa is snake.."

Is there any function like "contains" or "exists" in python?
What are different alternatives we have?

Please help.

Thanks and Regards,
Ganesh

==============================================================================
Please access the attached hyperlink for an important electronic communications disclaimer: 

http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
==============================================================================



From jeremy+complangpython at jeremysanders.net  Mon Oct 29 07:02:53 2007
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Mon, 29 Oct 2007 11:02:53 +0000
Subject: ANN: Veusz 1.0 - a scientific plotting package
References: <fg49eq$nnh$1@gemini.csx.cam.ac.uk>
	<4725b164$0$4359$9b4e6d93@newsspool4.arcor-online.net>
	<fg4d00$1t4$1@gemini.csx.cam.ac.uk>
	<4725ba01$0$16671$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <fg4ekt$59k$1@gemini.csx.cam.ac.uk>

Wildemar Wildenburger wrote:
> Oh, OK. I though it was a library. I now see that it is an actual
> application. Sorry to have bothered you :)

It's a library too :-)

-- 
Jeremy Sanders
http://www.jeremysanders.net/


From _karlo_ at mosor.net  Wed Oct 10 21:19:07 2007
From: _karlo_ at mosor.net (Karlo Lozovina)
Date: Thu, 11 Oct 2007 03:19:07 +0200
Subject: Keeping track of subclasses and instances?
References: <fejpo9$vm$1@news1.carnet.hr>
	<t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>
Message-ID: <fejtcg$9k1$1@news1.carnet.hr>

Larry Bates wrote:

> I'm not completely sure I understand the question but here goes. 
> Instances of
> classes are classes can be stored in lists or dictionaries.  In lists you
> reference them via their index (or iterate over them) and in dictionaries
> you can give them a name that is used as a key.

I wish if it were that simple :).

Here is a longer description - I have a function that given input creates a
custom class and returns it back. The user is free to subclass that (even
more, he should do that), and of course he will make instances of those
subclasses. Now, my question is how to keep track of subclasses and their
instances, without the need for user interaction (appending them to a list,
or adding to dictionary)?

Thanks,

-- 
Karlo Lozovina - Mosor


From NikitaTheSpider at gmail.com  Mon Oct 15 20:35:19 2007
From: NikitaTheSpider at gmail.com (Nikita the Spider)
Date: Mon, 15 Oct 2007 20:35:19 -0400
Subject: Simple HTML template engine?
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <NikitaTheSpider-BA68A6.20351915102007@johnf2.biosci.ohio-state.edu>

In article <1192419411.895715.138450 at e9g2000prf.googlegroups.com>,
 "allen.fowler" <allen.fowler at yahoo.com> wrote:

> Hello,
> 
> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
> 
> No need for caching, template compilation, etc.
> 
> Speed is not a major issue.
> 
> I just need looping and conditionals. Template inheritance would be a
> bonus.
> 
> I've seen Genshi and Cheetah, but they seem way too complex.

I use Spyce, but in addition to being a template system for mixing 
Python & HTML, it is also a Web server which drags in a bunch of extra 
cruft that you don't need. It's what I use to generate static reports, 
though.

Good luck

-- 
Philip
http://NikitaTheSpider.com/
Whole-site HTML validation, link checking and more


From kay.schluehr at gmx.net  Mon Oct 29 00:36:21 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Sun, 28 Oct 2007 21:36:21 -0700
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
In-Reply-To: <87odeifw7b.fsf@benfinney.id.au>
References: <87bqaihmq7.fsf@benfinney.id.au>
	<1193624413.723453.71700@22g2000hsm.googlegroups.com>
	<87odeifw7b.fsf@benfinney.id.au>
Message-ID: <1193632581.665651.42920@k79g2000hse.googlegroups.com>

On Oct 29, 4:15 am, Ben Finney <bignose+hates-s... at benfinney.id.au>
wrote:
> Kay Schluehr <kay.schlu... at gmx.net> writes:
> > I used to write once a coverage tool ( maybe I can factor this out
> > of my tool suite some time )
>
> That'd be wonderful. I'd like to see comparisons between different
> test-coverage tools, just as we have the different but comparable
> 'pyflakes' and 'pylint' code inspection tools.
>
> > Given it's nature it might act transformative. So a statement:
>
> > if a and b:
> >     BLOCK
>
> > can be transformed into
>
> > if a:
> >     if b:
> >         BLOCK
>
> I don't see that this actually helps in the cases described in the
> original post. The lack of coverage checking isn't "are both sides of
> an 'and' or 'or' expression evaluated", since that's the job of the
> language runtime, and is outside the scope of our unit test.
>
> what needs to be tested is "do the tests execute both the 'true' and
> 'false' branches of this 'if' statement", or "do the tests exercise
> the 'no iterations' case for this loop", et cetera. That is, whether
> all the functional branches are exercised by tests, not whether the
> language is parsed correctly.

You are right. I re-read my coverage tool documentation and found also
the correct expansion for the statement

if a and b:
   BLOCK

which is:

if a:
    if b:
        BLOCK
    else:
        BLOCK
else:
    BLOCK

This will cover all relevant traces. The general idea still holds.

Note I would like to see some kind of requirement specification ( a
PEP style document ) of different coverage purposes and also a test
harness. I'm all for advancing Python and improve the code base not
just accidentally. Something in the way of an MVC framework was nice
in addition which implements UI functions independently s.t. the basic
coverage functionality can be factored out into components and
improved separately. I do not think it's a good idea to have 10
coverage tools that handle presentation differently.







From python.list at tim.thechases.com  Mon Oct 29 10:44:05 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 29 Oct 2007 09:44:05 -0500
Subject: Built-in functions and keyword arguments
In-Reply-To: <Xns99D893230B22Cduncanbooth@127.0.0.1>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<Xns99D893230B22Cduncanbooth@127.0.0.1>
Message-ID: <4725F1B5.80804@tim.thechases.com>

>> <ot>
>> While we're at it, you should avoid using builtin's names for 
>> identifiers - here, using 'object' as the arg name shadows the builtin 
>> 'object' class).
>> </ot>
> 
> I think you are being a little bit unfair here: help(len) says:
> 
> len(...)
>     len(object) -> integer
>     
>     Return the number of items of a sequence or mapping.
> 
> which implies that the argument to len has the name 'object' (although in 
> fact it doesn't have a name). 

And to confound matters even further for the uninitiated,

http://docs.python.org/lib/built-in-funcs.html#l2h-45

says that it's "len(s)" instead (but "len(s=[])" doesn't work either)

-tkc






From rcdailey at gmail.com  Thu Oct 11 11:45:26 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 11 Oct 2007 10:45:26 -0500
Subject: Problems with struct.pack()
In-Reply-To: <20071011114028.M98089@uniqsys.com>
References: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>
	<1192063855.3385.30.camel@localhost.localdomain>
	<496954360710102019t25fe9f10p5cf9295212b0c433@mail.gmail.com>
	<20071011114028.M98089@uniqsys.com>
Message-ID: <496954360710110845v193e23b3l2602c187b8527195@mail.gmail.com>

On 10/11/07, Carsten Haese <carsten at uniqsys.com> wrote:
>
> This is much clearer, and it explains why you need to mix arbitrary binary
> data with unicode text. Because of this mixing, as you have surmised,
> you're
> going to have to treat the file as a binary file in Python. In other
> words,
> don't open the file with the codecs module and do the encoding yourself,
> like so:
>
> mystring = u"Hello World"
> file = open( "somefile.txt", "wb" )
> file.write( struct.pack ( "I", len(mystring) ) )
> file.write( mystring.encode("utf-16-le") )
>
> (Note that I've guessed that you want little-endian byte-order in the
> encoding. Without that indication, encode() would put a byte order mark at
> the
> beginning of the string, which you probably don't want.)
>
> Hope this helps,
>
> Carsten.
>
>

What if 'mystring' has been encoded to "utf-8"?

mystring = u"Hello World"
mystring = mystring.encode( "utf-8" )

So far the code above doesn't seem to work with this.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071011/7fdb0480/attachment.html>

From joasch at quicknet.nl  Thu Oct  4 07:48:36 2007
From: joasch at quicknet.nl (Verroen)
Date: Thu, 4 Oct 2007 13:48:36 +0200
Subject: open(.xls file, 'w') so that hyperlinks appear
Message-ID: <5163BDF07CAF4551A6376FF9D902BF4B@PCvanastrid>

An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/05f414d5/attachment.html>

From cmpython at gmail.com  Thu Oct 11 19:28:13 2007
From: cmpython at gmail.com (cmpython at gmail.com)
Date: Thu, 11 Oct 2007 23:28:13 -0000
Subject: Diferent files: GUI (wxpython) Program
In-Reply-To: <fem5g9$mia$1@aioe.org>
References: <fem5g9$mia$1@aioe.org>
Message-ID: <1192145293.118368.214950@k35g2000prh.googlegroups.com>

On Oct 11, 5:44 pm, marc <mar... at gmail.com> wrote:
> Hi why I can call an .py GUI (wxpython) from a program and control it?
> I'm newbie in python.

Sorry, could you restate that?  Explain again what you want to do.



From goldtech at worldpost.com  Mon Oct 15 11:16:17 2007
From: goldtech at worldpost.com (goldtech)
Date: Mon, 15 Oct 2007 08:16:17 -0700
Subject: A Python way to get MS Access table column information?
Message-ID: <1192461377.629580.287370@i38g2000prf.googlegroups.com>

Using Python and OBDC in MS-Access DBs. So, I'm able to run SQL
statements from Python on an Access DB.

Is there an SQL statement that will give me column information? For a
table I want to know the data type and of course colum/Attribute name
for each column.

So far the answer has been "no". VB or some other tool is needed to do
that I'm told.

Using just Python and OBDC is there a way? Maybe Win32com?

Thanks



From paul.hankin at gmail.com  Sun Oct 14 10:25:13 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sun, 14 Oct 2007 14:25:13 -0000
Subject: Simple Text Processing Help
In-Reply-To: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
Message-ID: <1192371913.444185.65650@q3g2000prf.googlegroups.com>

On Oct 14, 2:48 pm, patrick.wa... at gmail.com wrote:
> Hi all,
>
> I started Python just a little while ago and I am stuck on something
> that is really simple, but I just can't figure out.
>
> Essentially I need to take a text document with some chemical
> information in Czech and organize it into another text file.  The
> information is always EINECS number, CAS, chemical name, and formula
> in tables.  I need to organize them into lines with | in between.  So
> it goes from:
>
> 200-763-1                     71-73-8
> n?trium-tiopent?l           C11H18N2O2S.Na           to:
>
> 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
>
> but if I have a chemical like: kyselina mo?ov?
>
> I get:
> 200-720-7|69-93-2|kyselina|mo?ov?
> |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
>
> and then it is all off.
>
> How can I get Python to realize that a chemical name may have a space
> in it?

In the original file, is every chemical on a line of its own? I assume
it is here.

You might use a regexp (look at the re module), or I think here you
can use the fact that only chemicals have spaces in them. Then, you
can split each line on whitespace (like you're doing), and join back
together all the words between the 3rd (ie index 2) and the last (ie
index -1) using tokens[2:-1] = [u' '.join(tokens[2:-1])]. This uses
the somewhat unusual python syntax for replacing a section of a list
with another list.

The approach you took involves reading the whole file, and building a
list of all the chemicals which you don't seem to use: I've changed it
to a per-line version and removed the big lists.

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"
input = codecs.open(path, 'r','utf8')
output = codecs.open(path2, 'w', 'utf8')

for line in input:
    tokens = line.strip().split()
    tokens[2:-1] = [u' '.join(tokens[2:-1])]
    chemical = u'|'.join(tokens)
    print chemical + u'\n'
    output.write(chemical + u'\r\n')

input.close()
output.close()

Obviously, this isn't tested because I don't have your chem_1_utf8.txt
file.

--
Paul Hankin



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 29 10:24:27 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 29 Oct 2007 14:24:27 -0000
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
Message-ID: <13ibr8r2tov2hc8@corp.supernews.com>

On Mon, 29 Oct 2007 13:52:04 +0000, Armando Serrano Lombillo wrote:

> Why does Python give an error when I try to do this:
> 
>>>> len(object=[1,2])
> Traceback (most recent call last):
>   File "<pyshell#40>", line 1, in <module>
>     len(object=[1,2])
> TypeError: len() takes no keyword arguments
> 
> but not when I use a "normal" function:
> 
>>>> def my_len(object):
> 	return len(object)
> 
>>>> my_len(object=[1,2])
> 2

Because len() takes no keyword arguments, just like it says, but my_len() 
is written so it DOES take a keyword argument.

When you call a function foo(object=[1,2]) you are instructing Python to 
bind the value [1,2] to the keyword argument "object". But if the 
function doesn't have a keyword argument named "object" then it will fail 
immediately. Since len() doesn't have ANY keyword arguments, naturally it 
doesn't have one called "object".

You can see the same effect here:

>>> def my_len2(*args):
...     return len(arg[0])
...
>>> my_len2(object=[1,2])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: my_len2() got an unexpected keyword argument 'object'


Apart from the error message being slightly different, many (most? all?) 
of the built in functions are like my_len2().

You may be thinking that keyword arguments are the equivalent of this:

object=[1,2]
len(object)

That is not the case. They are not at all equivalent.



-- 
Steven.


From arnodel at googlemail.com  Thu Oct 25 05:16:02 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Thu, 25 Oct 2007 09:16:02 -0000
Subject: python project ideas
In-Reply-To: <47205C66.6090906@web.de>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
	<mailman.442.1193300742.13605.python-list@python.org>
	<47205C66.6090906@web.de>
Message-ID: <1193303762.909548.199230@50g2000hsm.googlegroups.com>

On Oct 25, 10:05 am, Stefan Behnel <stefan.behnel-n05... at web.de>
wrote:
> Evan Klitzke wrote:
> > but you could also write your own templating engine for this.
>
> No, please.

I'm afraid it is the inalienable right of every python programmer to
write their own templating engine.
After all, it takes less time to write your own than to understand
some of them!

--
Arnaud




From cadet.bramble at gmail.com  Wed Oct 24 20:07:41 2007
From: cadet.bramble at gmail.com (bramble)
Date: Thu, 25 Oct 2007 00:07:41 -0000
Subject: Cross-platform GUI development
In-Reply-To: <mailman.387.1193165961.13605.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<mailman.158.1192250064.927.python-list@python.org>
	<1193164449.831675.200600@i38g2000prf.googlegroups.com>
	<mailman.387.1193165961.13605.python-list@python.org>
Message-ID: <1193270861.900672.125650@e34g2000pro.googlegroups.com>

On Oct 23, 2:59 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/23/07, maco <maco... at gmail.com> wrote:
>
>
> > On Oct 13, 12:34 am, Michael L Torrie <torr... at chem.byu.edu> wrote:
>
> > > Qt doesn't look very native on my desktop.  In fact, Qt apps have always
> > > looked out of place on a Gnome desktop.
>
> > > On Windows and Mac, no question, they look pretty native.  You do have
> > > to take pains to make the app "feel" native, though.  Like follow the UI
> > > guidelines of the platform,  etc.
>
> > > > Just a question of "feeling" I think; because most of those GUI
> > > > framework, offer quiet the same functionality.
>
> > GTK (like Pidgin or the GIMP) looks pretty native on Windows to me.
>
> This can only be because you don't use these programs often, or you've
> never actually looked at them. The GIMP in particular has almost
> nothing in common with the native controls - it's got a different
> background color, a different drawing model (note nasty delayed
> repaints when resizing), clearly non-native dialogs like file pickers,
> non-standard menu icons, just a huge list.
>
> Pidgin has a fairly minimal interface so it's flaws are less obvious,
> but they're still there.
>
> If this doesn't bother you, more power to you, but don't make the
> mistake of thinking that GIMP is any way "native" on windows.

In the end, GTK+ is themable, and it's a free software project, so if
the MS Windows port has warts, anyone can come along and polish it up
for that platform.



From panguohualove at sina.com  Mon Oct  1 08:06:36 2007
From: panguohualove at sina.com (panguohua)
Date: Mon, 01 Oct 2007 05:06:36 -0700
Subject: a chinese girl' space
Message-ID: <1191240396.674146.198970@d55g2000hsg.googlegroups.com>

http://39174107.qzone.qq.com/?url=http://photo.qq.com/tips_jump.htm%23uin%3D39174107%26albumid%3D107725465%26photoid%3D712d4566965649d399799d8c631305d8



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Oct  6 01:03:32 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 06 Oct 2007 07:03:32 +0200
Subject: WebBased Vector 2D Graphics
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
	<5mmiq5Fe2nnuU1@mid.individual.net>
	<1191581624.236102.237540@d55g2000hsg.googlegroups.com>
Message-ID: <5moj92Fe80j1U1@mid.individual.net>

 cjt22 at bath.ac.uk wrote:
> On Oct 5, 11:43 am, Bjoern Schliessmann <usenet-

>> The above approaches allow you to directly print to the web page.
> 
> Would this mean I wouldn't be able to have any fancy graphics
> outputed such as the rectangles I mentioned before with different
> filled in colours?

No, it wouldn't. I suggest you followed Diez' recommendation.

Regards,


Bj?rn

-- 
BOFH excuse #437:

crop circles in the corn shell



From tjreedy at udel.edu  Thu Oct  4 17:53:14 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 4 Oct 2007 17:53:14 -0400
Subject: Is there a nicer way to do this?
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <fe3nc9$2tg$1@sea.gmane.org>


"Stefan Arentz" <stefan.arentz at gmail.com> wrote in message 
news:87ejgawpug.fsf at keizer.soze.com...
|
| Is there a better way to do the following?
|
| attributes = ['foo', 'bar']
|
| attributeNames = {}
| n = 1
| for attribute in attributes:
|   attributeNames["AttributeName.%d" % n] = attribute
|   n = n + 1
|
| It works, but I am wondering if there is a more pythonic way to
| do this.

Perhaps better is using enumerate:

>>> attributeNames = {}
>>> for n,attribute in enumerate(['foo', 'bar']):
 attributeNames["AttributeName.%d" % (n+1)] = attribute

>>> attributeNames
{'AttributeName.1': 'foo', 'AttributeName.2': 'bar'}

However,  mapping indexes to names should be more useful:

>>> aNames = dict(enumerate(['foo', 'bar']))
>>> aNames
{0: 'foo', 1: 'bar'}


Terry Jan Reedy






From gustafl at algonet.se  Wed Oct 31 13:02:26 2007
From: gustafl at algonet.se (Gustaf)
Date: Wed, 31 Oct 2007 18:02:26 +0100
Subject: Method needed for skipping lines
Message-ID: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>

Hi all,

Just for fun, I'm working on a script to count the number of lines in source files. Some lines are auto-generated (by the IDE) and shouldn't be counted. The auto-generated part of files start with "Begin VB.Form" and end with "End" (first thing on the line). The "End" keyword may appear inside the auto-generated part, but not at the beginning of the line.

I imagine having a flag variable to tell whether you're inside the auto-generated part, but I wasn't able to figure out exactly how. Here's the function, without the ability to skip auto-generated code:

# Count the lines of source code in the file
def count_lines(f):
  file = open(f, 'r')
  rows = 0
  for line in file:
    rows = rows + 1
  return rows

How would you modify this to exclude lines between "Begin VB.Form" and "End" as described above? 

Gustaf


From dstromberglists at gmail.com  Fri Oct 12 13:06:57 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Fri, 12 Oct 2007 10:06:57 -0700
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>
Message-ID: <pan.2007.10.12.17.06.55.654662@gmail.com>

On Fri, 12 Oct 2007 05:30:13 -0500, Nick Craig-Wood wrote:


> 3) Isn't a pain to install on windows (GTK)

pygtk is easy to install on windows if you use cygwin.

I started developing a little ssh GUI frontend on a windows laptop using
cygwin pygtk and cygwin openssh.  When I moved it over to a Linux VMware
on the same laptop to finish it, the code Just Worked.




From aahz at pythoncraft.com  Tue Oct 30 10:44:07 2007
From: aahz at pythoncraft.com (Aahz)
Date: 30 Oct 2007 07:44:07 -0700
Subject: Event for multithread help advice
References: <mailman.512.1193502460.13605.python-list@python.org>
Message-ID: <fg7fvn$nls$1@panix3.panix.com>

In article <mailman.512.1193502460.13605.python-list at python.org>,
JoeSox  <joesox at gmail.com> wrote:
>
>I have two threads going
>class guiThread(threading.Thread)
>class mainThread(threading.Thread)
>
>Within the guiThread, I have an instance of class GUIFramework(Frame)
>in this Tkinter instance I have a ListBox.
>
>The second thread, mainThread, has an instance of a custom class the
>will need to send out text or other objects to the gui.
>
>What is the best or easiest way to send, let's say text, from
>mainThread to the guiThread ListBox?
>
>Should I use a custom Event class, pubsub, or Queue?

Well, I'd recommend a Queue, but that's partly because I have an example
already made up:
http://www.pythoncraft.com/OSCON2001/FibThreaded.py
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"Typing is cheap.  Thinking is expensive."  --Roy Smith


From krishna.ggk at gmail.com  Mon Oct 29 07:50:29 2007
From: krishna.ggk at gmail.com (gopala)
Date: Mon, 29 Oct 2007 11:50:29 -0000
Subject: Capturing output with input
In-Reply-To: <mailman.559.1193630620.13605.python-list@python.org>
References: <1193596747.543020.78280@e34g2000pro.googlegroups.com>
	<mailman.559.1193630620.13605.python-list@python.org>
Message-ID: <1193658629.424650.11390@z24g2000prh.googlegroups.com>

On Oct 29, 9:03 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:

> On Linux, use the "script" command.
> On Windows, select the region to copy using the mouse and paste it onto a
> notepad file.
> I don't think Python would help here.

Thanks :-)
Now  i just do os.system(exeFile) and i can easily copy the output
from terminal using mouse selection.



From veli-matti.jantunen at netsonic.fi  Sun Oct 21 06:50:15 2007
From: veli-matti.jantunen at netsonic.fi (Veli-Matti)
Date: Sun, 21 Oct 2007 13:50:15 +0300
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
In-Reply-To: <1192954949.817248.242120@y27g2000pre.googlegroups.com>
References: <47133159.9010204@acm.org>
	<1192920380.625668.221960@i13g2000prf.googlegroups.com>
	<1192954949.817248.242120@y27g2000pre.googlegroups.com>
Message-ID: <471b2ef9$0$5050$39db0f71@news.song.fi>

Gosi wrote:
..
> I can not use the APL character set at all.
> It is too mixed up with my national characters.

What about a unicode version of APL?

Honestly, I cannot use J because it mixes with all
the characters I use... ;)
-Veli-Matti






From DustanGroups at gmail.com  Wed Oct 31 07:28:39 2007
From: DustanGroups at gmail.com (Dustan)
Date: Wed, 31 Oct 2007 11:28:39 -0000
Subject: setting variables in outer functions
In-Reply-To: <Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
	<Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
Message-ID: <1193830119.542006.137750@o38g2000hse.googlegroups.com>

On Oct 30, 11:29 am, Duncan Booth <duncan.bo... at invalid.invalid>
wrote:
> Neil Cerutti <horp... at yahoo.com> wrote:
> > It's allows a standard programming idiom which provides a
> > primitive form of object oriented programming using closures to
> > represent state.
>
> > def account(opening_balance):
> >   balance = opening_balance
> >   def get_balance():
> >     nonlocal balance
> >     return balance
> >   def post_transaction(x):
> >     nonlocal balance
> >     balance += x
> >   return balance, post_transaction
>
> > fred_balance, fred_post = account(1500)
> > joe_balance, joe_post = account(12)
> > fred_post(20)
> > joe_post(-10)
> > fred_balance()
>
> TypeError: 'int' object is not callable
>
> > 1520
> > joe_balance()
>
> TypeError: 'int' object is not callable
>
> > 2
>
> > Python classes will of course nearly always win, though the idiom
> > looks like it might be faster (I don't have Python 3000 to try it
> > out).
>
> Python classes might be less error prone.

Why would using classes make your code any less prone to typographical
errors?



From jipjip at arcor.de  Sun Oct 21 12:05:35 2007
From: jipjip at arcor.de (jipjip)
Date: Sun, 21 Oct 2007 18:05:35 +0200
Subject: General module name clash problem?
In-Reply-To: <5nrj32FjmsgnU1@mid.uni-berlin.de>
References: <4718904e$0$30373$9b4e6d93@newsspool4.arcor-online.net>
	<5nrj32FjmsgnU1@mid.uni-berlin.de>
Message-ID: <471b78bd$0$4375$9b4e6d93@newsspool4.arcor-online.net>

I hope, i get it right now. :-)

So i worked out an extreme
not-module-name-clashing-example.

Type 'python start.py' at root.

Thanks, jipjip

-------------- next part --------------
A non-text attachment was scrubbed...
Name: root.tar.gz
Type: application/x-gzip
Size: 1266 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/7a84edf5/attachment.bin>

From mkent at acm.org  Mon Oct 15 05:22:33 2007
From: mkent at acm.org (Mike Kent)
Date: Mon, 15 Oct 2007 05:22:33 -0400
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
Message-ID: <47133159.9010204@acm.org>

Conference page
	// with links to program details //
		(updated Friday 10/12)

	http://www.sigapl.org/apl2007.html


Co-located with OOPSLA 2007

	http://www.oopsla.org/oopsla2007


On-line registration (through Wednesday 10/17)

	http://www.regmaster.com/conf/oopsla2007.html
	


From mullen at tsuda.ac.jp  Tue Oct 16 01:38:44 2007
From: mullen at tsuda.ac.jp (Tony Mullen)
Date: Tue, 16 Oct 2007 14:38:44 +0900
Subject: IDLE and opening with Python 2.5
Message-ID: <fb968fb40710152238n72e42eaod82bac55a2a157a8@mail.gmail.com>

Hello,

I have several problems. I have installed 2.5.1 on Windows XP.  I had
a previous installation of Python 2.4 which, in trying to solve the
first problem I uninstalled.  At present, as far as I know, I only
have 2.5.1 installed.

Python itself seems to work.  If I click python.exe it runs.  However,
it does not appear in my start menu and I cannot set it as the default
application to open .py files.

Since uninstalling Python 2.4 (I have since installed 2.5.1 and
rebooted several times) I can also no longer run IDLE.

Any ideas where I am going wrong here?

Thanks,

Tony


From mhellwig at xs4all.nl  Fri Oct  5 05:44:53 2007
From: mhellwig at xs4all.nl (Martin P. Hellwig)
Date: Fri, 05 Oct 2007 11:44:53 +0200
Subject: Command-line does work when scheduled
In-Reply-To: <1191198578.984891.233620@19g2000hsx.googlegroups.com>
References: <1191098074.342460.52130@n39g2000hsh.googlegroups.com>
	<mailman.1289.1191100817.2658.python-list@python.org>
	<1191104269.578536.56470@g4g2000hsf.googlegroups.com>
	<mailman.1291.1191113688.2658.python-list@python.org>
	<1191114246.668635.327080@o80g2000hse.googlegroups.com>
	<mailman.1293.1191120273.2658.python-list@python.org>
	<1191163376.067339.34740@d55g2000hsg.googlegroups.com>
	<13g0f31ak031jc4@corp.supernews.com>
	<1191198578.984891.233620@19g2000hsx.googlegroups.com>
Message-ID: <47060719$0$32614$e4fe514c@dreader13.news.xs4all.nl>

Jim wrote:
> On Sep 30, 6:16 pm, Dennis Lee Bieber <wlfr... at ix.netcom.com> wrote:
>> On Sun, 30 Sep 2007 07:42:56 -0700, Jim <jscre... at compuserve.com>
>> declaimed the following in comp.lang.python:
>>
>>> What else could be wrong?
>>> Thanks,
>>         Possibly those associations are only defined for your login account,
>> and not active for the "account" that the task scheduler is running
>> under?
>> --
>>         Wulfraed        Dennis Lee Bieber               KD6MOG
>>         wlfr... at ix.netcom.com             wulfr... at bestiaria.com
>>                 HTTP://wlfraed.home.netcom.com/
>>         (Bestiaria Support Staff:               web-a... at bestiaria.com)
>>                 HTTP://www.bestiaria.com/
> 
> As far as know, since I'm the major user of my PC it runs under my
> account (computer administrator).   It even asked for the password for
> my account when I added this scheduled task.
> Any further ideas?
> Thanks,
> Jim
> 

It could be the scheduler might execute the job as the local system 
account (which isn't that by default and I doubt that this is the 
problem). If your configuration are not globally they won't be picked up 
by that account. Meaning you should set the environment variables not on 
user level but system level.

However I have observed some weird issues with scheduler too in the 
past, especially when the job is executed while the job owner is not 
logged on, apparently the full users profile is not available then.
But that behavior seems to differ on the various windows incarnations 
and the color of the moon.

I solved my problem by running the scheduling program not in scheduler 
but in cron, but I doubt that is applicable for you :-)

This post doesn't really help much but perhaps it gives some insights on 
the problem.

-- 
mph


From dteslenko at gmail.com  Mon Oct 22 04:47:57 2007
From: dteslenko at gmail.com (Dmitry Teslenko)
Date: Mon, 22 Oct 2007 12:47:57 +0400
Subject: python 2.5 scripting in vim on windows: subprocess problem
Message-ID: <91325fec0710220147i216df961u5f33d5c659cdb92f@mail.gmail.com>

Hello!
I'm using subprocess.Popen in python script in vim.
It called this way:
def some_func():
		p = subprocess.Popen( command , stdout = subprocess.PIPE, stderr =
subprocess.STDOUT)
		while True:
			s = p.stdout.readline()
			if not s:
				break
			self.__output( '... %s' % s )
		return p.wait()

It filters command's output and re-ouputs it in stdout.
Being called from console, it works fine.
Being called from vim with :python some_func() it says:
file "...subprocess.py", line 586 in __init__
...
file "...subprocess.py", line 699, in _get_handles
...
file "...subprocess.py", line 744 in _make_inheritable
DUPLICATE_SAME_ACCESS
WindowsError: [Error 6]


From beingthexemplarylists at gmail.com  Thu Oct 18 02:41:10 2007
From: beingthexemplarylists at gmail.com (warhero)
Date: Thu, 18 Oct 2007 06:41:10 -0000
Subject: importing modules question
Message-ID: <1192689670.456814.55850@i13g2000prf.googlegroups.com>

Hey all, sorry for the totally newb question. I recently switched over
to python from ruby. I'm having problems figuring out how module
importing works.. as a simple example I've got these files:

/example/loader.py
/example/loadee.py

loadee.py
class loadee(object):
    def __init__(self):
        print "loadee"

loader.py
import loadee
if __name__ == "__main__":
    l = loadee()


When I run the loader file I get a TypeError: TypeError: 'module'
object is not callable

hm. Sorry, this is totally newb, this is the only switching pains I've
had.



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 12:03:38 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 09:03:38 -0700
Subject: simple try/except question
In-Reply-To: <xfnVi.9506$aJ3.5968@trnddc02>
References: <xfnVi.9506$aJ3.5968@trnddc02>
Message-ID: <1193673818.436235.35290@y42g2000hsy.googlegroups.com>

On 29 oct, 12:46, Alan Isaac <ais... at american.edu> wrote:

> Is the behavior below expected?
> If so, why is the exception not caught?
> Thanks,
> Alan Isaac
>
> >>> x,y='',''
> >>> try: x/y
>
> ... except TypeError: print 'oops'
> ...
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> TypeError: unsupported operand type(s) for /: 'str' and 'str'

It works for me, using 2.5.1 and 2.4.3 on Windows XP.
Perhaps you reassigned TypeError?
Python 2.5 says:

py> TypeError
<type 'exceptions.TypeError'>

Earlier versions:
py> TypeError
<class exceptions.TypeError at 0x009B4570>

--
Gabriel Genellina



From gagsl-py2 at yahoo.com.ar  Tue Oct 16 22:51:25 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 16 Oct 2007 23:51:25 -0300
Subject: How to find imported modules
References: <1192567603.939767.142850@y27g2000pre.googlegroups.com>
	<1192567806.272507.136800@e34g2000pro.googlegroups.com>
Message-ID: <op.t0bl7zqgx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 16 Oct 2007 17:50:06 -0300, <kyosohma at gmail.com> escribi?:

> On Oct 16, 3:46 pm, Johny <pyt... at hope.cz> wrote:

>> Now I need to find out which  of Programs imports a particular module
>> - module timesocket.py
>> Is that possible without opening each program?
>
> It is with grep on *nix, or you could download baregrep for windows,
> which is what I use when I need to know this sort of thing.

On Windows there is no need to download anything, you can use the findstr  
utility:

findstr /R /S /C:"import  *timesocket" /C:"from  *timesocket  *import" *.py

-- 
Gabriel Genellina



From robert.kern at gmail.com  Tue Oct  2 13:06:48 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 02 Oct 2007 12:06:48 -0500
Subject: module confusion
In-Reply-To: <fdsopm$kd6$4@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
Message-ID: <fdttr9$ej8$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
> Kern wrote:
> 
>> Not all of the modules in a package are imported by importing the
>> top-level package.
> 
> You can't import packages, only modules.
> 
>> os.path is a particularly weird case because it is just an alias to the
>> platform-specific path-handling module; os is not a package.
> 
> os is a module, os.path is a variable within that module. That's all there
> is to it.

Yes, but os.path is also module. That's why I said it was a weird case.

In [1]: import os

In [2]: type(os.path)
Out[2]: <type 'module'>

-- 
Robert Kern

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



From bignose+hates-spam at benfinney.id.au  Wed Oct  3 22:53:56 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 04 Oct 2007 12:53:56 +1000
Subject: migrating to packages
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
Message-ID: <87lkajr3nf.fsf@benfinney.id.au>

gherzig at fmed.uba.ar writes:

> The MYCLASES.py file contains the A class, so i can use

> from MYCLASES import A
> a = ()
> 
> Using the "package mode" (wich looks fine BTW), having the simple
> MYCLASES/
>      __init__.py
>      A.py
> 
> forces my (i guess) to use the
> from MYCLASES.A import A

Yes, that's the namespace structure you've got with the above
filesystem structure.

(Incidentally, "MYCLASES" is a poor name for the package; it's
misspelled, refers to "classes" when it's really a package, and should
be all lower-case. I'll refer below as though the package is named
"mypackage" and the module is named "foo", with a class named "Foo".)

> which is not what i want, because the big amount of files i will
> have to modify

If you want, instead, to do "from mypackage import foo", then that's
where the package's '__init__' module is useful.

    mypackage/
        __init__.py
        foo.py

Simply have the '__init__' module do this::

    from foo import Foo

That way, the class 'Foo' is bound again to the name 'Foo' in the
namespace of the 'mypackage' package, and becomes available as an
attribute. Then, other code can do::

    from mypackage import Foo

Note that it's *also* possible for code to continue to do:

    from mypackage.foo import Foo

but that's no longer necessary, since the same object is now also
available by the name 'Foo' directly from 'mypackage' because you
explicitly put it there.

-- 
 \     "Pinky, are you pondering what I'm pondering?" "Uh, I think so, |
  `\     Brain, but we'll never get a monkey to use dental floss."  -- |
_o__)                                            _Pinky and The Brain_ |
Ben Finney


From torriem at chem.byu.edu  Wed Oct 10 22:42:26 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Wed, 10 Oct 2007 20:42:26 -0600
Subject: if then elif
In-Reply-To: <1192055029.856930.19230@r29g2000hsg.googlegroups.com>
References: <mailman.42.1192048768.927.python-list@python.org>	<Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>
	<1192055029.856930.19230@r29g2000hsg.googlegroups.com>
Message-ID: <470D8D92.4040902@chem.byu.edu>

chris.monsanto at gmail.com wrote:

> 
> that's the most incorrect thing i've heard all day!
> 
> if cal or fat <= 0 is parsed as if (cal) or (fat <= 0)

Which is exactly what he said.  He also said that what the poster
probably wanted was

if cal <= 0 or fat <=0

> 



From cjt22 at bath.ac.uk  Fri Oct  5 06:53:44 2007
From: cjt22 at bath.ac.uk (cjt22 at bath.ac.uk)
Date: Fri, 05 Oct 2007 03:53:44 -0700
Subject: WebBased Vector 2D Graphics
In-Reply-To: <5mmiq5Fe2nnuU1@mid.individual.net>
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
	<5mmiq5Fe2nnuU1@mid.individual.net>
Message-ID: <1191581624.236102.237540@d55g2000hsg.googlegroups.com>

On Oct 5, 11:43 am, Bjoern Schliessmann <usenet-
mail-0306.20.chr0n... at spamgourmet.com> wrote:
>  cj... at bath.ac.uk wrote:
> > Is there any way this web programming can be done in python.
>
> Sure. Minimalistic approaches include using CGI
> (http://docs.python.org/lib/module-cgi.html)
> or using Apache with mod_python directly. There are also web
> frameworks for Python, but I don't know much about them.
>
> > As mentioned previously, I have never done any web based
> > development so don't really know what I'm talking about when
> > trying to understand how I can go from this Python program output
> > to producing some graphical output on a web page.
>
> The above approaches allow you to directly print to the web page.
> I'm not sure how you could display constant progress there. Perhaps
> much simpler with mod_python than with CGI.
>
> Regards,
>
> Bj?rn
>
> --
> BOFH excuse #369:
>
> Virus transmitted from computer to sysadmins.

Thanks Bjorn

> The above approaches allow you to directly print to the web page.

Would this mean I wouldn't be able to have any fancy graphics outputed
such as the rectangles I mentioned before with different filled in
colours?

Cheers
Chris



From lasses_weil at klapptsowieso.net  Sun Oct  7 11:54:39 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 17:54:39 +0200
Subject: Top Programming Languages of 2013
In-Reply-To: <1191772154.784564.138370@r29g2000hsg.googlegroups.com>
References: <mailman.1621.1191737112.2658.python-list@python.org>
	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>
Message-ID: <47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>

Kay Schluehr wrote:
> On Oct 7, 8:05 am, Dick Moores <r... at rcblue.com> wrote:
>> <http://www.redcanary.ca/view/top-programming>
>>
>> Dick Moores
> 
> Despite my doubts that Ajax and .NET will be programming languages in
> 2013 a more interesting question is: what could push Python forward
> s.t. it eats such a large piece of the PL cake?
> 
import friends
import sex

try:
     sex.have()
except ErrectionError, PrematureError:
     pass
finally:
     sex.brag(friends)


From gherron at islandtraining.com  Tue Oct 30 00:08:48 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Mon, 29 Oct 2007 21:08:48 -0700
Subject: How to find if a string contains another string
In-Reply-To: <F444CAE5E62A714C9F45AA292785BED327C3BEC2@esng11p33001.sg.csfb.com>
References: <F444CAE5E62A714C9F45AA292785BED327C3BEC2@esng11p33001.sg.csfb.com>
Message-ID: <4726AE50.6090103@islandtraining.com>

Borse, Ganesh wrote:
> Hi,
>
> Am new to python.
> May someone please help me know this?
>
> How can we check whether one big string contains another small string?
>
> E.g. 
> bigstring="python anaconda boa cobra"
> smallone="boa"
>   
Use the operator named in:

>>> bigstring="python anaconda boa cobra"
>>> smallone="boa"
>>> smallone in bigstring
True

Often used in if statements like this:

>>> if smallone in bigstring:
...   print 'contained'
... else:
...   print 'not'
...
contained

Gary Herron

> If 0 == contains(bigstring,smallone):
>         print "Yes, boa is snake.."
>
> Is there any function like "contains" or "exists" in python?
> What are different alternatives we have?
>
> Please help.
>
> Thanks and Regards,
> Ganesh
>
> ==============================================================================
> Please access the attached hyperlink for an important electronic communications disclaimer: 
>
> http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
> ==============================================================================
>
>   



From paul.melis at gmail.com  Wed Oct 17 03:33:59 2007
From: paul.melis at gmail.com (paul.melis at gmail.com)
Date: Wed, 17 Oct 2007 00:33:59 -0700
Subject: Static variable vs Class variable
In-Reply-To: <5n39eaFg1m0qU1@mid.uni-berlin.de>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
Message-ID: <1192606439.190757.23530@i13g2000prf.googlegroups.com>

On Oct 10, 8:23 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > However, it is not true that += "always leads to a rebinding of a to the
> > result of the operation +". The + operator for lists creates a new list.
> > += for lists does an in-place modification:
>
> It still is true.
>
> a += b
>
> rebinds a. Period. Which is the _essential_ thing in my post, because
> this rebinding semantics are what confused the OP.

Doesn't this depend on wether "a" supports __iadd__ or not? Section
3.4.7 of the docs say

"""
If a specific method is not defined, the augmented operation falls
back to the normal methods. For instance, to evaluate the expression x
+=y, where x is an instance of a class that has an __iadd__() method,
x.__iadd__(y) is called. If x is an instance of a class that does not
define a __iadd__() method, x.__add__(y) and y.__radd__(x) are
considered, as with the evaluation of x+y.
"""

So if a.__iadd__ exists, a += b is executed as a.__iadd__(b), in which
case there's no reason to rebind a.

However, this confuses the heck out of me:

>>> class A:
...     l = []
...
>>> class B(A): pass
...
>>> B.__dict__
{'__module__': '__main__', '__doc__': None}
>>> B.l
[]
>>> B.l.append('1')
>>> B.l
['1']
>>> B.__dict__
{'__module__': '__main__', '__doc__': None}
>>> B.l.__iadd__('2')
['1', '2']
>>> B.l
['1', '2']
>>> B.__dict__
{'__module__': '__main__', '__doc__': None}
>>> B.l += '3'
>>> B.__dict__
{'__module__': '__main__', '__doc__': None, 'l': ['1', '2', '3']}

Why is B.l set for the += case only? B.l.__iadd__ obviously exists.

Paul






From bignose+hates-spam at benfinney.id.au  Fri Oct  5 18:51:41 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 06 Oct 2007 08:51:41 +1000
Subject: Test doubles (stubs and mocks) for unit testing (was: unit testing)
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<1191604175.903042.228140@g4g2000hsf.googlegroups.com>
Message-ID: <877im1qio2.fsf_-_@benfinney.id.au>

7stud <bbxx789_05ss at yahoo.com> writes:

> What are some strategies for unit testing a function that obtains
> user input?

This is just one example of "how do I unit test a code unit that
interacts with something complex outside itself?" You want to test
*only* the code unit under test, not the external object with which it
interacts.

The answer is: Replace the external object irrelevant to your test
with a "test double" ? a stub or mock object ? that exhibits the
expected behaviour to the code unit, but doesn't perform the complex
behaviour that's irrelevant to your unit test.

If it's a matter of something simple and deterministic like "the input
for this test should be 'foo'", then the test double needs to do
nothing but respond to the expected method calls by producing the test
data. This is a "stub object", and you replace the real one with this
during the setup for your test case.

In more complex cases (e.g. "the code unit should write specific data
to this file", or "the code unit should make this change to the
database"), the test double needs to respond to method calls and
produce test data as needed, but also needs to be able to assert that
the right method calls were made. An instrumented test double like
this is called a "mock object", and you can query its state during the
test to assert that it has been manipulated as expected.

More about the difference between mock objects and stub objects:

    <URL:http://martinfowler.com/articles/mocksArentStubs.html>

My favourite mock objects are created with Ian Bicking's "minimock",
which uses the doctest functionality for the instrumentation, and
keeps it really simple:

    <URL:http://blog.ianbicking.org/minimock.html>

Set up any required test doubles at the start of each test case (so
you start with a known state each time), and switch back the real one
at the end of the test case. The test double thus becomes part of the
"test fixtures" for that specific test case.

More about test doubles (stub and mock objects) with Python:

    <URL:http://pycheesecake.org/wiki/PythonTestingToolsTaxonomy>
    <URL:http://www.mockobjects.com/>

Note that this works best when the external interface is a replaceable
object, or a small number of them. If the number of things that need
to be replaced with test doubles just to perform a single test case is
high, that's a warning sign: your code unit is too tightly coupled to
too many things, and you need to refactor it soon to have a looser
interface to the rest of the system.

    <URL:http://www.c2.com/cgi/wiki?CouplingAndCohesion>

-- 
 \        "I'd take the awe of understanding over the awe of ignorance |
  `\                                       any day."  -- Douglas Adams |
_o__)                                                                  |
Ben Finney


From minkoo.seo at gmail.com  Tue Oct  9 12:16:12 2007
From: minkoo.seo at gmail.com (minkoo.seo at gmail.com)
Date: Tue, 09 Oct 2007 09:16:12 -0700
Subject: Static variable vs Class variable
Message-ID: <1191946572.001076.271970@50g2000hsm.googlegroups.com>

Hi.

I've got a question on the differences and how to define static and
class variables. AFAIK, class methods are the ones which receives the
class itself as an argument, while static methods are the one which
runs statically with the defining class.

Hence, my understanding is that static variables must be bound to the
class defining the variables and shared by children of parent class
where the variable is defined. But, please have a look at this code in
which a guy told me that the variable a is static:

>>> class Foo:
	a = 1
	@classmethod
	def increment(cls):
		cls.a += 1
		print cls.a

Here, I am defining variable a which, I believe is class variable,
i.e., variable that is not bound to Foo itself. Rather, a is bound to
the class which is accessing the variable. The code that corroborates
this idea is as follows:

>>> class Child1(Foo):
	pass

>>> Child1.increment()
4

>>> class Child2(Foo):
	pass

>>> Child2.increment()
4

This means that Child1 and Child2 does not share variable a which
means that variable a is class variable rather than static variable.

Could you please comment on this? Is a static or class variable?
What's the most recent way of defining 'class' and 'static' variables?

Thanks.
- Minkoo



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 17 17:32:59 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 17 Oct 2007 23:32:59 +0200
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
Message-ID: <5nndcbFj8g4kU1@mid.individual.net>

Ixiaus wrote:

> val = 'string'
> li = list(val)
> print li.reverse()
> 
> returns nothing, but,

Yes -- li.reverse() returns None. "print None" prints nothing.
 
> val = 'string'
> li = list(val)
> li.reverse()
> print li
> 
> returns what I want. 

I'm afraid not. li.reverse() still returns None, but this time you
print li, and this shows the reversed list.

As already explained, li.reverse() modifies the existing list. What
to use here depends on what you want to achieve:

If you really want to reverse the list (i. e. re-sort the list in
memory, and perhaps work with it afterwards), use "li.reverse()". 

If you just want to have all its members in reverse order, use the
builtin reversed(li) (which is an iterator giving you li's members
from back to front when iterating over it).

Regards,


Bj?rn

-- 
BOFH excuse #243:

The computer fleetly, mouse and all.



From deets at nospam.web.de  Wed Oct 10 02:35:01 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 10 Oct 2007 08:35:01 +0200
Subject: Static variable vs Class variable
In-Reply-To: <5n39eaFg1m0qU1@mid.uni-berlin.de>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
Message-ID: <5n3a4pFg07i5U1@mid.uni-berlin.de>

Diez B. Roggisch schrieb:
>>> Yes, it is.
>>
>> I'm afraid not.
>>
>> As I admitted in my reply to Marc, I overstated my case by saying that 
>> L isn't rebound at all. Of course it is rebound, but to itself.
>>
>> However, it is not true that += "always leads to a rebinding of a to 
>> the result of the operation +". The + operator for lists creates a new 
>> list. += for lists does an in-place modification:
> 
> 
> It still is true.
> 
> a += b
> 
> rebinds a. Period. Which is the _essential_ thing in my post, because 
> this rebinding semantics are what confused the OP.

Which I just came around to show in a somewhat enhanced example I could 
have used the first time:

class Foo(object):

     a = []

     @classmethod
     def increment(cls):
         print cls
         cls.a += [1]

class Bar(Foo):
     pass

Foo.increment()
Bar.increment()

print Foo.a
print Bar.a
Bar.a = []
print Foo.a
print Bar.a



192:~/projects/SoundCloud/ViewAnimationTest deets$ python /tmp/test.py
<class '__main__.Foo'>
<class '__main__.Bar'>
[1, 1]
[1, 1]
[1, 1]
[]


Which makes the rebinding-part of __iadd__ pretty much an issue, don't 
you think?


Diez


From hyugaricdeau at gmail.com  Thu Oct 25 09:14:02 2007
From: hyugaricdeau at gmail.com (Hyuga)
Date: Thu, 25 Oct 2007 13:14:02 -0000
Subject: python project ideas
In-Reply-To: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <1193318042.555129.244550@k79g2000hse.googlegroups.com>

On Oct 25, 12:09 am, "menk... at gmail.com" <menk... at gmail.com> wrote:
> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group.
> May be something useful for open source or python community ...
> Well, just post what you think could be appropriate ...

Write a good, clean web-based music library/jukebox.  This is
something I've been thinking of doing for a while, but I welcome
someone to beat me to the punch.  There are a few such things out
there already--the most active is probably Jinzora, but I find it to
be bloated and slow, with a horribly cluttered interface.  And I think
there are some other projects out there, but most of them are
abandoned.  A simple, attractive interface would be good, with a built-
in flash player, and UTF-8 support throughout.

(and though this is a relatively minor detail, for god's sake if a
file has both ID3v1 and ID3v2 tags, use the ID3v2 tags by default.
Jinzora doesn't didn't do this last I tried and it was quite
obnoxious).



From nagle at animats.com  Tue Oct  9 23:59:33 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 10 Oct 2007 03:59:33 GMT
Subject: M2Crypto possible intermittent bug
Message-ID: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>

   I just "upgraded" from M2Crypto 0.17 to M2Crypto 0.18, and I'm
running my regression tests.  I'm seeing occasional cases where
M2Crypto raises the exception SSL.SSLError, and the associated
error is "(0, 'Error')", which is the bogus error you get if you feed 0 to
"perror".  It failed once on "verisign.com"'s cert, then worked
on the next try.

   This is on Windows, running Python 2.4 (which is what M2Crypto
supports on Windows.)

   I'm trying to make this reproduceable.  More later.

					John Nagle


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 23 18:42:46 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 24 Oct 2007 00:42:46 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <i4KdndpZk9ED7oPanZ2dnUVZ_judnZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
	<mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
	<471e431f$0$21451$426a34cc@news.free.fr>
	<nuydnd4YcMaWwYPanZ2dnUVZ_hGdnZ2d@comcast.com>
	<471e713f$0$5252$426a34cc@news.free.fr>
	<i4KdndpZk9ED7oPanZ2dnUVZ_judnZ2d@comcast.com>
Message-ID: <471e7973$0$28547$426a74cc@news.free.fr>

Steven Bethard a ?crit :
> Bruno Desthuilliers wrote:
> 
>> Steven Bethard a ?crit :
>>
>>> Bruno Desthuilliers wrote:
>>>
>>>>> I guess as long as your documentation is clear about which 
>>>>> attributes require computation and which don't...
>>>>
>>>>
>>>> Why should it ?
> 
> [snip]
> 
>> I believe we simply disagree on weither properties should be used when 
>> it makes sens (from a semantic POV, which doesn't prevent common sens, 
>> thanks) or if they should be restricted to refactoring-life-saver. Now 
>> since the second use implies that some attributes-looking properties 
>> of an object may not be what they looks like - and even worth, may 
>> suddenly become (a little bit) more costly without client code being 
>> warned - I don't see what's your problem with the first one.
> 
> 
> I said those kind of expectation violations should be documented, and 
> you said "Why should it?"  I gather you really only meant the "Why 
> should it?" in the situation that the computation is extremely minimal. 

Did you failed to spot some kind of pattern in my previous posts ?-)

More seriously: I do assume that what looks like an attribute will not 
require *heavy* computation - a bit more than 'extremely minimal' is ok 
for me, but we may not have the same definition of 'extremely minimal'. 
And FWIW, I do assume too that computation-heavy functions will be 
either obvious (either from the domain and/or wrt/ what I do pass as 
arguments - ie, I expect that sorting a 10K items list with a custom cmp 
callback will be heavier that naturally sorting a 10 words list) or 
documented as such. Else, I just write my code and, if and when I have a 
real problem, I profile the whole thing...  strange enough, but so far 
it seems to work just fine.

>  I can understand that, but I'd still like it documented for any objects 
> I use.

There are quite a lot of things I'd like to see documented - but 
hopefully I'm mostly working with OSS, so I usually use the source when 
I need a very exact and detailed documentation !-)

Now how does your desire for documentation imply that "if you're 
creating a class for the first time, it should *never* use property()" ? 
I still wonder...

>> Ho, and wrt/ training and expectations, I'm afraid you have to live 
>> with the fact that computed attributes (either properties and custom 
>> descriptors) are alreay widely used. FWIW, may I remind you that a 
>> method is actually a callable returned by a computed attribute ?-)
> 
> 
> Yep.  And it's documented. ;-)

How many Python users ever bothered to read that part of the doc ? How 
many are not even aware of this ?



From anthony at muzz.co.uk  Wed Oct 17 20:02:19 2007
From: anthony at muzz.co.uk (Anthony Perkins)
Date: Thu, 18 Oct 2007 01:02:19 +0100
Subject: Best Python Linux distribution
In-Reply-To: <47160015.3070404@muzz.co.uk>
References: <47160015.3070404@muzz.co.uk>
Message-ID: <8258A6AA9235411EABC35C5E7C741C6B@tiamaria>

----- Original Message ----- 
From: "Anthony Perkins" <anthony at muzz.co.uk>


> What is the best GNU/Linux distribution (or the most preferred) for
> developing Python applications?

Thanks for your advice guys, the Debian 4.0r1 DVD (suggested off-list) seems 
to fit my needs best.

-- 
Anthony Perkins
muzz.be 



From Mark.English at rbccm.com  Mon Oct 15 11:48:27 2007
From: Mark.English at rbccm.com (English, Mark)
Date: Mon, 15 Oct 2007 16:48:27 +0100
Subject: Convert obejct string repr to actual object
Message-ID: <EE7D40281B517A41AF5A90847A61F279379655D2@SEW39051.oak.fg.rbc.com>

X-Replace-Address: mark.ignorethisbit.english at xxxrbccmxxx.ignorethisbittoo_and_removethosepreceding_xxxs_.com
On 12 Oct, 18:14, Carsten Haese <cars... at uniqsys.com> wrote:
> On Fri, 2007-10-12 at 17:41 +0100, English, Mark wrote:
> > > From: Tor Erik S?nvisen
> > > Date: October 8th 2007
> > > I've tried locating some code that can recreate an object from
> > > it's string representation...
> > On a related note I've wondered about this:
> > >>> class Foo(object): pass
> > >>> f = Foo()
> > >>> s = repr(f)
> > >>> s
> > '<__main__.Foo object at 0x007CBAB0>'
> > So how do I get f back from s ?
> 
> I can't help but wonder, do you often find yourself having to locate an
> object from its hexadecimal address?
Never. This just didn't feel particularly repr-ish to me:
"For many types, this function makes an attempt to return a string that would yield an
 object with the same value when passed to eval()"

I was just asking in case I was missing some mechanism which made new style class
instances fall under the heading of "many types" in this context.
______________________________________________________________________

This email is intended only for the use of the individual(s) to whom it is addressed and may be privileged and confidential.
Unauthorised use or disclosure is prohibited.If you receive This e-mail in error, please advise immediately and delete the original message.
This message may have been altered without your or our knowledge and the sender does not accept any liability for any errors or omissions in the message.


From see.signature at no.spam  Mon Oct 15 04:22:10 2007
From: see.signature at no.spam (Eric Brunel)
Date: Mon, 15 Oct 2007 10:22:10 +0200
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<mailman.158.1192250064.927.python-list@python.org>
Message-ID: <op.tz8b68i5wepdt4@ericb.pragmadev>

On Sat, 13 Oct 2007 06:34:14 +0200, Michael L Torrie  
<torriem at chem.byu.edu> wrote:
[snip]
> You do have
> to take pains to make the app "feel" native, though.  Like follow the UI
> guidelines of the platform,  etc.

You're absolutely right; I just wanted to add a precision: it's true for  
every toolkit, not only Qt...
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From mrstephengross at hotmail.com  Wed Oct 31 18:17:48 2007
From: mrstephengross at hotmail.com (mrstephengross)
Date: Wed, 31 Oct 2007 22:17:48 -0000
Subject: Print a list to a string?
Message-ID: <1193869068.254703.209450@y42g2000hsy.googlegroups.com>

I would like to get the results of a print operation placed in a
string. For instance, you can very easily create a list and print it
to stdout:

  x = [1,2,3]
  print x # Will print [1,2,3]

What if I want the text "[1,2,3]" placed in a string? For instance,
something like:

  x = [1,2,3]
  str = ''
  print str x # x = '[1,2,3]'

Any ideas?

Thanks,
--Steve



From chris.lyon at spritenote.co.uk  Wed Oct 31 02:47:18 2007
From: chris.lyon at spritenote.co.uk (wyleu)
Date: Tue, 30 Oct 2007 23:47:18 -0700
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <4727b1e6$0$13390$9b622d9e@news.freenet.de>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
Message-ID: <1193813238.978699.154830@57g2000hsv.googlegroups.com>

On 30 Oct, 22:36, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
> > Should I need to download a later version of tkinter and/or should I
> > alter setup.py in my python install directory and then remake?
>
> Neither, nor. You need the Tk header files installed; they probably
> come in a package called libtk8.4-dev or some such in your system.
> If they are present when setup.py runs, _tkinter will get built
> automatically. If you don't have the header files of Tk installed,
> no amount of fiddling with setup.py, or getting alternative sources
> of tkinter, will actually get you a _tkinter module.
>
> HTH,
> Martin


There is indeed such  package on the system: libtk8.4-
devel-8.4.13-1mdk, which installs.
However upon running make in the python2.5.1 download directory

INFO: Can't locate Tcl/Tk libs and/or headers
running build_scripts
The only file on the system before installing the above package with a
libtk name is libtk8.4.so.0 in /usr/lib
after the package is installed /usr/lib contains:

  0 lrwxrwxrwx 1 root root     13 Oct 31 07:43 libtk8.4.so ->
libtk8.4.so.0*
969 -rwxr-xr-x 1 root root 986216 Apr 21  2006 libtk8.4.so.0*
  1 -rwxr-xr-x 1 root root    119 Apr 21  2006 libtk.so*
183 -rw-r--r-- 1 root root 186092 Apr 21  2006 libtkstub8.4.a

however make still complains of the non existance of the the Tcl/Tk
libs and/or headers

copying these file to /usr/local/lib where python2.5 seems to be makes
no difference.






From ptmcg at austin.rr.com  Mon Oct 22 12:35:04 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Mon, 22 Oct 2007 09:35:04 -0700
Subject: Need help parsing with pyparsing...
In-Reply-To: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>
References: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>
Message-ID: <1193070904.326690.49360@i38g2000prf.googlegroups.com>

On Oct 22, 4:18 am, "Just Another Victim of the Ambient Morality"
<ihates... at hotmail.com> wrote:
>     I'm trying to parse with pyparsing but the grammar I'm using is somewhat
> unorthodox.  I need to be able to parse something like the following:
>
> UPPER CASE WORDS And Title Like Words
>
>     ...into two sentences:
>
> UPPER CASE WORDS
> And Title Like Words
>
>     I'm finding this surprisingly hard to do.  The problem is that pyparsing
> implicitly assumes whitespace are ignorable characters and is (perhaps
> necessarily) greedy with its term matching.  All attempts to do the
> described parsing either fails to parse or incorrectly parses so:
>
> UPPER CASE WORDS A
> nd Title Like Words
>
>     Frankly, I'm stuck.  I don't know how to parse this grammar with
> pyparsing.
>     Does anyone know how to accomplish what I'm trying to do?
>     Thank you...

By the way, are these possible data lines?:

A Line With No Upper Case Words
A LINE WITH NO TITLE CASE WORDS
SOME UPPER CASE WORDS A Title That Begins With A One Letter Word

-- Paul



From mellit at gmail.com  Mon Oct 29 09:33:57 2007
From: mellit at gmail.com (Anton Mellit)
Date: Mon, 29 Oct 2007 14:33:57 +0100
Subject: Pari Python
In-Reply-To: <472536D2.8070004@sdf.lonestar.org>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
	<fg2o3n$q62$1@ger.gmane.org>
	<c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
	<472536D2.8070004@sdf.lonestar.org>
Message-ID: <c038b2740710290633m69993074jbe1d661de12dba29@mail.gmail.com>

Hi,
thanks for the comments. I think I should target on making my module
as a normal python module without using any modifications and
additionally (only additionally) provide some optional workaround for
the '^' and '/' problem. I am going to look at what Michael proposed

> With that in mind, why not implement your shell layer using pypy (python
> on python). That way you can have a full python parser that you can
> modify to your hearts content, running on an unmodified cpython core.
> Or implement your own parser using pyparsing.

> Or how about this:  Implement a shell in python that uses regex to
> replace and translate PariPython syntax into python syntax, and then
> evaluate it on the unmodified core.

Also I will look at how it is done in SAGE. SAGE is very difficult to
work with, it is definitely not pythonic and it is not implemented as
a bunch of python modules like I would prefer it. I can't find out how
to eliminate all the garbage there and leave only the python core. Its
pari support seems superficial. In many cases you have to evaluate
strings using pari interpreter like 'gp("a = intnum(x=0,6,sin(x))")'
(excerpt from the documentation).

Actually it should be nice to have this workaround available
separately for use by other math packages.

Anton


From Eric_Dexter at msn.com  Tue Oct  9 07:11:39 2007
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: Tue, 09 Oct 2007 04:11:39 -0700
Subject: embedding error in python example
Message-ID: <1191928299.360986.304070@22g2000hsm.googlegroups.com>

I compiled the comand line example and I am getting an error when I
try to use the program when the program is cleaning up (I don't know
that it would prevent the program from running though I will run more
tests)...  ebedpython test testt
result of call: -1
exception exceptions.TypeError: 'an integer is required' in ' 'garbage
collection' ignored
Fatal Python error: unexpected exception during garbage collection...

the program is just
test.py

def testt():
 x = 'test'

doesn't realy do anything it was my first test of the program..

I would be thankfull for any help..



tagline I don't need no stinken tagline...



From gagsl-py2 at yahoo.com.ar  Sat Oct 20 12:51:42 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 20 Oct 2007 13:51:42 -0300
Subject: Running another python interpreter
References: <47179DBA.8040407@hotmail.com> <4717A261.7090303@hotmail.com>
	<mailman.187.1192737606.13605.python-list@python.org>
	<1192742192.830006.95130@e9g2000prf.googlegroups.com>
	<op.t0g0ieg7x6zn5v@gabriel2.softlabbsas.com.ar>
	<4719C677.6070303@hotmail.com>
Message-ID: <op.t0h84gssx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sat, 20 Oct 2007 06:12:23 -0300, Simon Pickles <sipickles at hotmail.com>  
escribi?:

> This is very nearly perfect. I have a second console window.
> Unfortunately, the first is waiting for the second to close. Is there
> anyway to specify the equivalent of os.P_NOWAIT?

Use the more generic version:

subprocess.Popen([sys.executable, "gateway.py", "other", "arguments"],  
creationflags = subprocess.CREATE_NEW_CONSOLE)

For more info on the subprocess module, see  
http://docs.python.org/lib/module-subprocess.html

-- 
Gabriel Genellina



From apardon at forel.vub.ac.be  Tue Oct  2 03:43:28 2007
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 2 Oct 2007 07:43:28 GMT
Subject: s.split() on multiple separators
References: <1191160394.870241.171200@w3g2000hsg.googlegroups.com>
	<bkRLi.1723$hI7.1162@newssvr17.news.prodigy.net>
	<1191179790.181227.323480@k79g2000hse.googlegroups.com>
	<mailman.1325.1191209706.2658.python-list@python.org>
Message-ID: <slrnfg3tl0.fm5.apardon@rcpc42.vub.ac.be>

On 2007-10-01, Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote:
> En Sun, 30 Sep 2007 16:16:30 -0300, <mrkafk at gmail.com> escribi?:
>
>>> From my POV, if I want sequence from here to there, it should include
>> both here and there.
>>
>> I do understand the consequences of making high bound exclusive, which
>> is more elegant code: xrange(len(c)). But it does seem a bit
>> illogical...
>
> See this note from E.W.Dijkstra in 1982 where he says that the Python  
> convention is the best choice.
> http://www.cs.utexas.edu/users/EWD/transcriptions/EWD08xx/EWD831.html

It may be convincing if you only consider natural numbers in ascending
order. Suppose you have the sequence a .. b and you want the reverse.
If you work with included bounds the reverse is just b .. a. If you use
the python convention, things become more complicated.

Another problem is if you are working with floats. Suppose you have a
set of floats. Now you want the subset of numbers that are between a and
b included. If you want to follow the convention that means you have to
find the smallest float that is bigger than b, not a trivial task.

-- 
Antoon Pardon


From rhc2 at twcny.rr.com  Wed Oct 17 02:19:33 2007
From: rhc2 at twcny.rr.com (Dick Crepeau)
Date: Wed, 17 Oct 2007 02:19:33 -0400
Subject: Matlab axis control problem - solved
Message-ID: <4715A975.2090603@twcny.rr.com>

I don't understand my earlier problem but the following code works no 
matter what the ylim is set to:

I reworked the example major_minor_demo1.py to find the answer.

thanks
Dick C

ps: I still can't post a reply since I read the list with my mozilla or 
konqueror browser and email separately with thunderbird - the reply 
address is not obvious.

from pylab import *
from matplotlib.ticker import MaxNLocator, MultipleLocator, 
FormatStrFormatter

x=[10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0]
y=x
figure(1)
ax=subplot(111)
ax.plot(array(x), array(y), 'x')

ymajorLocator   = MultipleLocator(5)
ymajorFormatter = FormatStrFormatter('%d')

ax.set_yscale('log')

ax.set_ylim(18.0, 58.0)

ax.yaxis.set_major_locator(ymajorLocator)
ax.yaxis.set_major_formatter(ymajorFormatter)

ax.yaxis.grid(True, linestyle='-', which='major')
show()



From thermostat at gmail.com  Thu Oct  4 13:28:59 2007
From: thermostat at gmail.com (Dan)
Date: Thu, 04 Oct 2007 17:28:59 -0000
Subject: using regular express to analyze lisp code
In-Reply-To: <1191518039.676797.290620@22g2000hsm.googlegroups.com>
References: <1191518039.676797.290620@22g2000hsm.googlegroups.com>
Message-ID: <1191518939.509584.316690@19g2000hsx.googlegroups.com>

On Oct 4, 1:13 pm, Kelie <kf9... at gmail.com> wrote:
> hello,
>
> i've spent couple of hours trying to figure out the correct regular
> expression to catch a VisualLisp (it is for AutoCAD and has a syntax
> that's similar to common lisp) function body. VisualLisp is case-
> insensitive. Any line beginning with ";" is for comment (can have
> space(s) before ";").
>
> here is an example of VisualLisp function:
>
> (defun get_obj_app_names (obj / rv)
>   (foreach app (get_registered_apps (vla-get-document obj))
>     (if (get_xdata obj app)
>       (setq rv (cons app rv))
>     )
>   )
>   (if rv
>     ;;"This line is comment (comment)"
>     ;;) This line is also comment
>     (acad_strlsort rv)
>     nil
>   )
> )
>
> for a function named foo, it is easy to find the beginning part of the
> function
> "(defun foo", but it is hard to find the ")" at the end of code block.
> if eventually i can't come up with the solution using regular
> expression only, what i was thinking is after finding the beginning
> part, which is "(defun foo" in this case, i can count the parenthesis,
> ignoring anything inside "" and any line for comment, until i find the
> closing ")".
>
> not sure if i've made myself understood. thanks for reading.
>
> kelie

So, paren matching is a canonical context-sensitive algorithm. Now,
many regex libraries have *some* not-purely-regular features, but I
doubt your going to find anything to match parens in a single regex.
If you want to go all out you can use a parser generator (for python
parser generators, see http://python.fyxm.net/topics/parsing.html).
Otherwise, you can go about it the quick-and-dirty way you describe:
scan for matching open and close parens, and ignore things in quotes
and comments.

-Dan



From f.guerrieri at gmail.com  Mon Oct 22 05:41:46 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Mon, 22 Oct 2007 11:41:46 +0200
Subject: calling a function from string
In-Reply-To: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
Message-ID: <79b79e730710220241tab13324xacabd11c76d3902@mail.gmail.com>

On 10/22/07, james_027 <cai.haibin at gmail.com> wrote:
> hi,
>
> i have a function that I could like to call, but to make it more
> dynamic I am constructing a string first that could equivalent to the
> name of the function I wish to call. how could I do that? the string
> could might include name of the module.
>
> for example
>
> a_string = 'datetime.' + 'today()'
>
> how could I call a_string as function?

you could use getattr:

function_name = 'time'  # this is a string
module_name = 'time'   # this is a string, too

my_function = getattr(module_name, function_name) # this is the
function object,
# equivalent to my_function = time.time
my_function() # This is the function call, equivalent to time.time()

bye
francesco


From timr at probo.com  Tue Oct 16 02:18:51 2007
From: timr at probo.com (Tim Roberts)
Date: Tue, 16 Oct 2007 06:18:51 GMT
Subject: int to str in list elements..
References: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
	<1192397897.822099.286260@v29g2000prd.googlegroups.com>
Message-ID: <unl8h3pj4u5dhs9176bms0iroh1bt0nkq4@4ax.com>

John Machin <sjmachin at lexicon.net> wrote:
>On Oct 15, 4:02 am, Abandoned <best... at gmail.com> wrote:
>> Hi..
>> I have a list as a=[1, 2, 3 .... ] (4 million elements)
>> and
>> b=",".join(a)
>> than
>> TypeError: sequence item 0: expected string, int found
>> I want to change list to  a=['1','2','3'] but i don't want to use FOR
>> because my list very very big.
>
>What is your worry: memory or time? The result string will be very
>very very big.

It's an interesting mental exercise to try to figure out just how large
that string will be, without using Python.

I get 30,888,889 bytes...
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From jo at durchholz.org  Thu Oct 25 03:33:44 2007
From: jo at durchholz.org (Joachim Durchholz)
Date: Thu, 25 Oct 2007 09:33:44 +0200
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <471fc967$0$13110$9b4e6d93@newsspool2.arcor-online.net>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
	<ffj1f3$fpp$2@online.de>
	<471fc967$0$13110$9b4e6d93@newsspool2.arcor-online.net>
Message-ID: <ffpgsb$nil$1@online.de>

Wildemar Wildenburger schrieb:
> Joachim Durchholz wrote:
>> And yes, it sucks in major ways.
>>
> Oh my God, I don't want to, but I just have to ask: Why?

First of all, irregularities.
http://en.wikipedia.org/wiki/TeX#The_typesetting_system:
"[...]almost all of TeX's syntactic properties can be changed on the fly 
which makes TeX input hard to parse by anything but TeX itself."

Then: No locals.
In particular, processing is controlled via global flags. If you need a 
different setting while a macro is processing, you have to remember to 
reset it before macro exit.

Many packages just set the flags to a standard value.
In other words, if you didn't know that a specific flag affects the 
operation of your macro, the macro may break when used with a different 
package that sets the flag to a different default value. (This may be 
one of the reasons why everybody just sticks with LaTeX.)

Four stages of processing, and you have to know exactly which is 
responsible for what to predict the outcome of a macro.
This is more a documentation problem - for several features, there's no 
description which stage is responsible for processing it. That can make 
working with a feature difficult, since you don't know which processing 
steps have already been done and which are still to happen.


My TeX days are long gone, so I may have forgotten some of the problems, 
but I think these were the worst. (And, of course, I may have gotten 
some details mixed up, so if you're seriously interested in the good and 
bad sides of TeX, verify before taking anything for granted.)

Note that it's just the markup language that I object to. The 
typesetting algorithms seem to be remarkably regular and robust.
I would have very much liked to see TeX split up into a typesetting 
library and a language processor.
Unfortunately, that was beyond my capabilities at the time I came into 
contact with TeX, and I never got around to revisiting the issue. 
However, the TeX algorithm has been extracted and made available as a

Regards,
Jo


From ptmcg at austin.rr.com  Wed Oct 31 16:38:08 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Wed, 31 Oct 2007 13:38:08 -0700
Subject: 3 number and dot..
In-Reply-To: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <1193863088.980629.127030@o38g2000hse.googlegroups.com>

On Oct 31, 2:58 pm, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
>
> How can i do?

>>> x = (12332321,)
>>> while (x[0]>0): x=divmod(x[0],1000)+x[1:]
...
>>> x
(0, 12, 332, 321)
>>> ".".join(map(str,x[1:]))
'12.332.321'

-- Paul



From roy at panix.com  Thu Oct 11 10:48:18 2007
From: roy at panix.com (Roy Smith)
Date: Thu, 11 Oct 2007 10:48:18 -0400
Subject: Advice on long running processes
References: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>
Message-ID: <roy-D12C51.10481711102007@news.panix.com>

commander_coder at hotmail.com wrote:

> Hello,
> 
> I write a lot of CGI scripts, in Python of course.  Now I need to
> convert some to long-running processes.  I'm having trouble finding
> resources about the best practices to do that.
> 
> I've found a lot of email discussions that say something like, "You
> need to educate yourself about the differences when you have long-
> running processes" but I've not had a lot of luck with finding things
> that explain the differences.

The biggest differences between run-and-exit vs. long running processes are 
resource management and error recovery.  Let's take them one at a time.

Resource management.  In a short-lived process, you really don't have to 
worry about this at all.  Snarf as much memory as you need, open as many 
files as you want, and when you exit, the operating system cleans it all up 
for you.  With a long running process, you have to worry about stuff like 
that.

In Python, you're isolate from the low-level details of memory management, 
but still need to think about it a bit.  Imagine you had code that looked 
like this in your main loop:

for request in getNextRequest():
    requestList.append (request)
    processRequest(request)

requestList is going to keep growing without bounds and eventually will eat 
up all available memory in the system and your process will crash.  
Everything you store, you also need to delete when you're done with it.

Same with files.  In a short-lived process, you can generally open as many 
files as you want and never worry about closing them.  It unlikely you will 
ever run out of file descriptors.  In a long running process, that's not 
the case.  If you open a new file each time you get a request and never 
close it, after a few hundred requests (depending on the operating system, 
maybe even a few thousand), you'll run out of file descriptors.

The other big thing is error recovery.  In a short lived process, if 
something fails, you print an error message and exit.  In a long running 
process, you need to somehow recover from the error and keep going as best 
you can.  This can be tricky.


From hniksic at xemacs.org  Tue Oct 30 05:24:05 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Tue, 30 Oct 2007 10:24:05 +0100
Subject: Automatic Generation of Python Class Files
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
	<1193691850.854354.301970@d55g2000hsg.googlegroups.com>
Message-ID: <87r6jdnefe.fsf@mulj.homelinux.net>

Fuzzyman <fuzzyman at gmail.com> writes:

> We recently had to change an object pipeline from new style classes
> to old style. A lot of these objects were being created and the
> *extra overhead* of new style classes was killing us. :-)

Can you please expand on this?  What extra overhead of new-style
classes are you referring to?

Memory overhead seems to firmly favor new-style classes, especially
for small object.  A trivial small-object allocation test such as

# After running this, use "top" or "ps" to see the ballpark memory
# consumption.  Remove "(object)" to measure for old-style class.
python -c 'import time
class A(object): pass
l=[A() for n in xrange(2000000)]
time.sleep(100)'

shows the Python process growing to 78M with a new-style class and to
354M with an old-style class.  And that is without even starting to
use actual optimizations, such as using __slots__!  Instantiation time
difference is less drastic, but still shows significant improvement
with the use of new-style classes: 0.27 usec for new-style, 0.40 usec
old-style (measured with timeit, subtracted baseline overhead).


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 14 00:01:53 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 14 Oct 2007 04:01:53 -0000
Subject: Safely dealing with arbitrary file objects
Message-ID: <13h355hnfnngca6@corp.supernews.com>

I have found myself writing functions rather like these:

def openfile(filename):
    if filename == '-':
        # convention for shell scripts in Unix-land is to use
        # '-' for stdin/stdout for reading/writing.
        outfile = sys.stdout
    if filename == '2-':
        outfile = sys.stderr
    else:
        outfile = file(filename, 'w')
    return outfile

def closefile(fileobj):
    # don't close standard file objects, or their replacements
    if not fileobj in (sys.stdout, sys.stderr, sys.stdin, 
    sys.__stdout__, sys.__stderr__, sys.__stdin__):
        fileobj.close()


def processfile(filename):
    outfile = openfile(filename)
    try:
        # lots of processing here, which may raise exceptions
        var = "stuff happens"
        outfile.write(var)
    finally:
        closefile(outfile)



A question:

I know I'm being paranoid about not closing files I shouldn't close, but 
am I being excessively paranoid, or not paranoid enough?

Suggestions for improvements welcome; while I'm happy to read suggestions 
using the new with statement, I can't yet rely on having Python 2.5 or 
better so I have to stick to try...finally.


-- 
Steven.


From __peter__ at web.de  Wed Oct 17 03:24:08 2007
From: __peter__ at web.de (Peter Otten)
Date: Wed, 17 Oct 2007 09:24:08 +0200
Subject: how to get my own namespace ?
References: <mailman.90.1192567423.13605.python-list@python.org>
Message-ID: <ff4dao$8qm$01$1@news.t-online.com>

stef mientki wrote:

> I want to view my own namespace,
> i.e. to see the modules namespace in the module itself,
> is that possible ?
> 
> I can use
>    dir()
> but I read dir is just a convenience function,
> and besides I want key/value pairs.

Use globals() or vars().

Peter


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 10 17:04:31 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 10 Oct 2007 23:04:31 +0200
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<mailman.31.1192033699.927.python-list@python.org>
Message-ID: <5n4t2vFgajr3U1@mid.individual.net>

Kevin wrote:
> Am I missing something, or am I the only one who explicitly
> declares structs in python?

Yes -- you missed my posting :)

Regards,


Bj?rn

-- 
BOFH excuse #209:

Only people with names beginning with 'A' are getting mail this week
(a la Microsoft)



From ryan at ryankaskel.com  Wed Oct 17 08:20:03 2007
From: ryan at ryankaskel.com (ryan k)
Date: Wed, 17 Oct 2007 12:20:03 -0000
Subject: Displaying future times
Message-ID: <1192623603.487293.53500@q5g2000prf.googlegroups.com>

I have a schedule of times in the future that I want to display in a
timezone the user sets. There is a useful module
http://www.purecode.com/~tsatter/python/README.txt (at that URL) with
a function that takes seconds from the epoch and a time zone and
returns what is basically a datetime object.

My question is how to I display the seconds from the epoch for a
datetime object (which will be a datetime in the future) for the UTC
timezone?



From drobinow at gmail.com  Sun Oct  7 00:34:40 2007
From: drobinow at gmail.com (drobinow at gmail.com)
Date: Sun, 07 Oct 2007 04:34:40 -0000
Subject: How to create a file on users XP desktop
In-Reply-To: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
Message-ID: <1191731680.601997.275010@r29g2000hsg.googlegroups.com>

On Oct 6, 11:31 pm, goldtech <goldt... at worldpost.com> wrote:
> Can anyone link me or explain the following:
>
> I open a file in a python script. I want the new file's location to be
> on the user's desktop in a Windows XP environment.  fileHandle = open
> (....., 'w' )  what I guess I'm looking for is an environmental
> variable that will usually be correct on most XP desktops and will
> work in the open statement. Or is there another way?
 This is really a Windows question, not a Python question. You should
have been able to figure it out yourself by examining existing
environment variables.
 Something like the code below should work for you if the standard
environment variables haven't been hosed.
----------
import os
Filename = os.getenv("HOMEDRIVE") + os.getenv("HOMEPATH") + "\\Desktop
\MyNewFile"
f = file(Filename, "w")
f.write("Here's a file on the desktop\n")
f.close()





From python at rcn.com  Tue Oct 23 16:33:41 2007
From: python at rcn.com (Raymond Hettinger)
Date: Tue, 23 Oct 2007 13:33:41 -0700
Subject: Set operations on object attributes question
In-Reply-To: <1193161534.824430.299330@k35g2000prh.googlegroups.com>
References: <1193147226.862501.97240@v23g2000prn.googlegroups.com>
	<1193153970.762375.262430@k35g2000prh.googlegroups.com>
	<1193161534.824430.299330@k35g2000prh.googlegroups.com>
Message-ID: <1193171621.738759.111260@q3g2000prf.googlegroups.com>

> Since what I _really_ wanted from this was the intersection of the
> objects (based on attribute 2), I was looking for a set-based
> solution,
> kinda like a decorate - <set operation> - undecorate pattern. Perhaps
> the problem does not fall into that category.

The "kinda" part is where the idea falls down.  If you've decorated
the inputs with a key function (like the key= argument to sorted()),
then the intersection step will return only a single element result,
not both matches as you specified in your original request.  IOW,
you cannot get set([(2, 1, 3), (1, 3, 3)]) as a result if both
set members are to be treated as equal.

It would be rather like writing set([1]).intersection(set([1.0]))
and expecting to get set([1, 1.0]) as a result.  Does your
intuition support having an intersection return a set larger
than either of the two inputs?


Raymond



From bj_666 at gmx.net  Wed Oct 17 09:20:33 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 17 Oct 2007 13:20:33 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net> <5nmcuhFiva37U2@mid.uni-berlin.de>
	<Xns99CC8AF5E7617duncanbooth@127.0.0.1>
	<1192625870.815418.226970@e34g2000pro.googlegroups.com>
Message-ID: <5nmggtFiva37U3@mid.uni-berlin.de>

On Wed, 17 Oct 2007 05:57:50 -0700, Paul Melis wrote:

> On Oct 17, 2:39 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
>> >>> class C(object):
>>
>>         def setx(self, value):
>>                 if len(value)>2:
>>                         raise ValueError
>>                 self._x = value
>>         def getx(self):
>>                 return self._x
>>         x = property(getx, setx)
>>
>> >>> o = C()
>> >>> o.x = []
>> >>> o.x += ['a']
>> >>> o.x += ['b']
>> >>> o.x += ['c']
>>
>> Traceback (most recent call last):
>>   File "<pyshell#27>", line 1, in <module>
>>     o.x += ['c']
>>   File "<pyshell#22>", line 4, in setx
>>     raise ValueError
>> ValueError
>>
>> >>> o.x
>> ['a', 'b', 'c']
> 
> Now that's really interesting. I added a print "before" and print
> "after" statement just before and after the self._x = value and these
> *do not get called* after the exception is raised when the third
> element is added.

Well, of course not.  Did you really expect that!?  Why?

Ciao,
	Marc 'BlackJack' Rintsch


From ldo at geek-central.gen.new_zealand  Wed Oct  3 06:17:21 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 03 Oct 2007 23:17:21 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1413.1191364484.2658.python-list@python.org>
Message-ID: <fdvq7h$fbq$1@lust.ihug.co.nz>

In message <mailman.1413.1191364484.2658.python-list at python.org>, Steve
Holden wrote:

> You *can* import a package ...

You're right. I was misremembering the behaviour of PyCrypto, where
importing the upper-level packages do little more than give you a list of
what algorithms are available.


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 18 00:31:13 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 04:31:13 -0000
Subject: Strange behaviour with reversed()
Message-ID: <13hdochic30oo43@corp.supernews.com>

I don't understand how reversed() is operating. I've read the description 
in the docs:

reversed(seq)
Return a reverse iterator. seq must be an object which supports the 
sequence protocol (the __len__() method and the __getitem__() method with 
integer arguments starting at 0). New in version 2.4. 

and help(reversed) but neither gives any insight to what happens when you 
use reversed() on a sequence, then modify the sequence.


This works as I expected:

>>> L = list("abc")
>>> RL = reversed(L)
>>> del L
>>> list(RL)
['c', 'b', 'a']

This suggests that reversed() makes a copy of the list:

>>> L = list("abc")
>>> RL = reversed(L)
>>> L.append("d")
>>> list(RL)
['c', 'b', 'a']

This suggests that reversed() uses a reference to the original list:

>>> RL = reversed(L)
>>> L[0] = 'e'
>>> list(RL)
['d', 'c', 'b', 'e']

And these examples suggests that reversed() is confused, or at least 
confusing:

>>> RL = reversed(L)
>>> del L[2]
>>> list(RL)
[]

>>> L = list("abc")
>>> RL = reversed(L)
>>> L.insert(0, "d")
>>> L
['d', 'a', 'b', 'c']
>>> list(RL)
['b', 'a', 'd']


Does anyone know what reversed() is actually doing?



-- 
Steven.


From evan at yelp.com  Thu Oct 25 04:25:37 2007
From: evan at yelp.com (Evan Klitzke)
Date: Thu, 25 Oct 2007 01:25:37 -0700
Subject: python project ideas
In-Reply-To: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <cfb58d850710250125o2849a3fva8898d417b9b99dd@mail.gmail.com>

On 10/24/07, menkaur at gmail.com <menkaur at gmail.com> wrote:
> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group.
> May be something useful for open source or python community ...
> Well, just post what you think could be appropriate ...

Something I've been thinking about recently -- a templating tool
capable of chunked output (i.e. sending the rendered output of the
template as it is filled in).  For example, if you have a page that
has a slow database query in the middle of the template, you could
emit the top half of the page as chunked HTML so that the client could
start rendering the page without stalling and waiting for the SQL
query to complete before the page is sent out. You'd probably write
this as an extension to Mako/Cheetah (and possibly extend something
like mod_python/mod_wsgi, don't know whether these support chunked
output or not), but you could also write your own templating engine
for this.

-- 
Evan Klitzke <evan at yelp.com>


From ggpolo at gmail.com  Wed Oct 24 16:31:16 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Wed, 24 Oct 2007 18:31:16 -0200
Subject: crontab library
In-Reply-To: <5fa6c12e0710241323n7a7773e4k203bcf3ad14d07cb@mail.gmail.com>
References: <5fa6c12e0710241212v7c675a1dp9c87d3c9f98df261@mail.gmail.com>
	<ac2200130710241237k4ecf4a77jeef2c6fc16f0fb06@mail.gmail.com>
	<5fa6c12e0710241323n7a7773e4k203bcf3ad14d07cb@mail.gmail.com>
Message-ID: <ac2200130710241331l5201422cn33e65bee9721f7fc@mail.gmail.com>

2007/10/24, Martin Marcher <martin at marcher.name>:
> 2007/10/24, Guilherme Polo <ggpolo at gmail.com>:
> > 2007/10/24, Martin Marcher <martin at marcher.name>:
> > > I had a look at the crontab docs and never realized how complex it
> > > actually is. So before I spend time in creating such a thing maybe
> > > someone did it already :)
> > >
> >
> > When you say complex, are you talking about the possible ways to
> > define when your job runs ? You could use a parser for the time format
> > it uses, like this:
> > http://umit.svn.sourceforge.net/viewvc/umit/branch/ggpolo/umitCore/CronParser.py?revision=1175&view=markup
>
> This looks nice for starters. But the crontab(5) manpage has a lot
> more - that's what I meant by complex. I guess it's just quite some
> typing work :)
>
>  * lists
>   * 1,2,4
>  * ranges
>   * 1-3
>  * steps
>   * 1-12/2
>   * "*/3"

It supports all these, so your "complex" argument was cut down again.

>  * specials
>   * @annually
>   * @weekly
>   * @daily
>   * ...

These specials aren't really complex, it is just some pre-sets

>  * mixes there of
>   * 1-4,6,16-22/3

Supports too, complexity is over again

>     (this actually depends on which cron you use, the
>     lowest common denominator would be to use either lists or ranges
>     (or ranges with steps))
>
> Then there is the difference of roots crontab where whe have a line
> like this:
>
> # minute hour dom month dow user command
> 0 * * * * nobody echo foo
>
> A users crontab
> # minute hour dom month dow command
> 0 * * * * echo foo
>

For this you basically check how many fields it has, so you can
determine if there is an user especified or not.

> and all the variables one could use. with a few of them being
> mandatory (LOGNAME, or USER depending on the OS), some of them being
> standard variables (SHELL,
> PATH) and of course custom variables.
>

If you need to use these you should know how to use these, just write
them and let the crontab app handle it.

>
> --
> http://noneisyours.marcher.name
> http://feeds.feedburner.com/NoneIsYours
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves


From gagsl-py2 at yahoo.com.ar  Mon Oct  1 19:54:07 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 01 Oct 2007 20:54:07 -0300
Subject: Question about quoting style.
References: <mailman.1366.1191268378.2658.python-list@python.org>
	<470153d9$0$27239$426a74cc@news.free.fr>
	<fdrr61$ipf$1@daisy.noc.ucla.edu>
Message-ID: <op.tzjl0hihx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 01 Oct 2007 19:10:11 -0300, James Stroud <jstroud at mbi.ucla.edu>  
escribi?:

> Bruno Desthuilliers wrote:
>> First point is that Python has no "variable interpolation".
>
> If you squint, it kind of does*:
>
>     >>> print '%(language)s has %(#)03d quote types.' % \
>               {'language': "Python", "#": 2}
>     Python has 002 quote types.
>
> You might think if the dict as a name space and the formatting operation
> as performing interpolation--but this take on formatting might be a  
> stretch.

Stretching more:

py> language="Python"
py> number=4
py> print '%(language)s has %(number)d quote types.' % locals()
Python has 4 quote types.

Or even more:

py> from string import Template
py> print Template('$language has $number quote  
types.').substitute(locals())
Python has 4 quote types.

-- 
Gabriel Genellina



From MrJean1 at gmail.com  Mon Oct 29 12:06:14 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Mon, 29 Oct 2007 16:06:14 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
Message-ID: <1193673974.502898.263260@i13g2000prf.googlegroups.com>

Maybe this helps.  Using ./configure --without-gcc .... in Python
2.5.1 on Solaris 10 gives a different message.  That message indicates
that C++ compiler 'c++' will be used but the Studio C++ compiler on
Solaris is 'CC'.

Using ./configure  --without-gcc  --with-cxx-main=CC .... made that
message go away.  Python did build after that and the tests are
running.

But it is a 32-bit binary, not 64-bit. Another ./configure option will
be needed to build that.

/Jean Brouwers



From python.list at tim.thechases.com  Tue Oct 16 14:20:59 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 16 Oct 2007 13:20:59 -0500
Subject: re.sub
In-Reply-To: <34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>	<1192516496.148265.103880@e9g2000prf.googlegroups.com>	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>
Message-ID: <4715010B.7080203@tim.thechases.com>

> Even stranger
> 
>  >>> re.sub('a', '\\n','bab')
> 'b\nb'
>  >>> print re.sub('a', '\\n','bab')
> b
> b

That's to be expected.  When not using a print statement, the raw 
evaluation prints the representation of the object.  In this 
case, the representation is 'b\nb'.  When you use the print 
statement, it actually prints the characters rather than their 
representations.  No need to mess with re.sub() to get the behavior:

   >>> s = 'a\nb'
   >>> s
   'a\nb'
   >>> print s
   a
   b
   >>> print repr(s)
   'a\nb'

-tkc






From evjenh at yahoo.com  Fri Oct 12 15:39:25 2007
From: evjenh at yahoo.com (Evjen Halverson)
Date: Fri, 12 Oct 2007 12:39:25 -0700 (PDT)
Subject: Moving objects in Tkinter
Message-ID: <23614.5396.qm@web38409.mail.mud.yahoo.com>

  I have tried to make a Tkinter program make a rectangle move down the window, but did not succeed. All it does is make a rectangle trail.
   What am I doing wrong?
   
 from Tkinter import*
 root = Tk()
 RectangleColor='orange'
 Background=tk_rgb = "#%02x%02x%02x" % (100, 255, 100)
 root.geometry('1000x800+0+0')
 root.title("Moving Object Test")
 w = Canvas (root,width=1000,height=800,bg=Background)
 w.grid()
 import time
 t1=time.time()
 t2=t1
 ti=t2-t1
 x=100
 y=0
 a=0
 rect=Canvas.create_rectangle(w,x,y,200,100,fill=RectangleColor)
  
   
   
 def CLS():
     cls=Canvas.create_rectangle(w,0,0,1000,800,fill=Background)
 while ti<10:
     t2=time.time()
     ti=t2-t1
     y=y+10
     Canvas.create_rectangle(w,x,y,200,100,fill=RectangleColor)
   
     st1=time.time()
     st2=st1
     subti=st2-st1
     root.mainloop()
     time.sleep(100)
   
     while subti<1:
         st2=time.time()
         subti=st2-st1
         a=a+1
     CLS()
   
 #    rect=Canvas.create_rectangle(w,x,y,1000,800,fill=RectangleColor)
   
   
   
 root.mainloop()
   
 quit()
       
---------------------------------
Building a website is a piece of cake. 
Yahoo! Small Business gives you all the tools to get online.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071012/880f2d69/attachment.html>

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 10:12:18 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 15:12:18 +0100
Subject: A class question
In-Reply-To: <874pga3zo7.fsf@mulj.homelinux.net>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
Message-ID: <4725ea41$0$8018$426a74cc@news.free.fr>

Hrvoje Niksic a ?crit :
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
> writes:
> 
>>> As others have answered, an instance can live in many variables,
>> "be bound to many names" would be more accurate IMHO.
> 
> Technically more accurate maybe (but see below), but I was responding
> to a beginner's post, so I was striving for ease of understanding.

The problem is that your formulation implies (to me at least) that the 
variable is actually a kind of container for the object. And I'm not 
sure being inaccurate really helps (OTHO, I often tend to get too 
technical, so who knows which approach is the best here... At least, the 
OP will now have both !-)

>> Python's "variables" are name=>object bindings.
> 
> No reason to use quotes. 

Yes, there's one : to mark the difference between Python-like 
name=>object bindings and C-like labels-on-memory-address variables - 
the latter model being the most commonly known to beginners.

> Variable is just as acceptable a term,

Indeed - no need to refer to chapter and verse here, I've read the book 
too !-)

(snip)

> I disagree with the idea that the terms "name" and "binding" are the
> only correct terminology. 

Which is not what I meant here.



From carsten at uniqsys.com  Wed Oct 10 20:50:55 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 10 Oct 2007 20:50:55 -0400
Subject: Problems with struct.pack()
In-Reply-To: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>
References: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>
Message-ID: <1192063855.3385.30.camel@localhost.localdomain>

On Wed, 2007-10-10 at 19:00 -0500, Robert Dailey wrote:
> Hi,
> 
> I have opened a unicode file for writing:
> 
> import codecs
> file = codecs.open( "somefile.dat", "wb", "utf-16" )
> 
> and I attempt to do this:
> 
> file.write( struct.pack ( "I", 5000 ) )
> 
> However, this won't work because the encoding of the string returned
> by "pack" isn't unicode. I'm a bit confused right now as to how I can
> get this to work. I can't allow the unicode-ness of the file interfere
> with the actual order of the bytes that pack() is returning (In other
> words, don't pack NULL characters in there) 

Please start at the beginning. What are you actually trying to
accomplish and why do you think you need to write arbitrary binary data
into a file that is supposed to be a UTF-16 encoded Unicode text file?

-- 
Carsten Haese
http://informixdb.sourceforge.net




From bignose+hates-spam at benfinney.id.au  Wed Oct  3 21:33:56 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 04 Oct 2007 11:33:56 +1000
Subject: reliable unit test logging
References: <mailman.1331.1191237975.2658.python-list@python.org>
	<871wcfx83l.fsf@benfinney.id.au>
	<mailman.1384.1191310742.2658.python-list@python.org>
	<87odfhsv5x.fsf@benfinney.id.au>
	<mailman.1455.1191422290.2658.python-list@python.org>
Message-ID: <87y7ejr7cr.fsf@benfinney.id.au>

Vyacheslav Maslov <vmaslov at swsoft.com> writes:

> I have one more question related to logging module, not unit test.

Please do readers a favour, then, and start a new thread (i.e. compose
a new message, not a reply in an existing thread) for unrelated
questions.

-- 
 \       "Philosophy is questions that may never be answered. Religion |
  `\              is answers that may never be questioned." ?anonymous |
_o__)                                                                  |
Ben Finney


From steven.bethard at gmail.com  Thu Oct  4 16:08:55 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 04 Oct 2007 14:08:55 -0600
Subject: unit testing
In-Reply-To: <1191525695.786834.315520@50g2000hsm.googlegroups.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<1191525695.786834.315520@50g2000hsm.googlegroups.com>
Message-ID: <6_udnRkbgtrK1ZjanZ2dnUVZ_g-dnZ2d@comcast.com>

danmcleran at yahoo.com wrote:
> On Oct 4, 1:02 pm, brad <byte8b... at gmail.com> wrote:
>> Does anyone else feel that unittesting is too much work? Not in general,
>> just the official unittest module for small to medium sized projects?
[snip]
>  I actually do a lot of unit testing. I find it both annoying and
> highly necessary and useful.

+1 QOTW.

I feel exactly the same way.  Writing tests (whether you use unittest, 
doctest, py.test or whatever) is always a pain and a time sink. But 
writing those tests catches so many bugs that it's worth it for any code 
you expect to use more than twice. =)

STeVe


From steven.bethard at gmail.com  Tue Oct 23 18:20:14 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 23 Oct 2007 16:20:14 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471e713f$0$5252$426a34cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
	<mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
	<471e431f$0$21451$426a34cc@news.free.fr>
	<nuydnd4YcMaWwYPanZ2dnUVZ_hGdnZ2d@comcast.com>
	<471e713f$0$5252$426a34cc@news.free.fr>
Message-ID: <i4KdndpZk9ED7oPanZ2dnUVZ_judnZ2d@comcast.com>

Bruno Desthuilliers wrote:
> Steven Bethard a ?crit :
>> Bruno Desthuilliers wrote:
>>>> I guess as long as your documentation is clear about which 
>>>> attributes require computation and which don't...
>>>
>>> Why should it ?
[snip]
> I believe we simply disagree on weither properties should be used when 
> it makes sens (from a semantic POV, which doesn't prevent common sens, 
> thanks) or if they should be restricted to refactoring-life-saver. Now 
> since the second use implies that some attributes-looking properties of 
> an object may not be what they looks like - and even worth, may suddenly 
> become (a little bit) more costly without client code being warned - I 
> don't see what's your problem with the first one.

I said those kind of expectation violations should be documented, and 
you said "Why should it?"  I gather you really only meant the "Why 
should it?" in the situation that the computation is extremely minimal. 
  I can understand that, but I'd still like it documented for any 
objects I use.

> Ho, and wrt/ training and expectations, I'm afraid you have to live with 
> the fact that computed attributes (either properties and custom 
> descriptors) are alreay widely used. FWIW, may I remind you that a 
> method is actually a callable returned by a computed attribute ?-)

Yep.  And it's documented. ;-)

STeVe


From krypto.wizard at gmail.com  Tue Oct 30 14:14:01 2007
From: krypto.wizard at gmail.com (Krypto)
Date: Tue, 30 Oct 2007 18:14:01 -0000
Subject: Python Interview Questions
Message-ID: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>

Hi,

I have used Python for a couple of projects last year and I found it
extremely useful. I could write two middle size projects in 2-3 months
(part time). Right now I am a bit rusty and trying to catch up again
with Python.

I am now appearing for Job Interviews these days and I am wondering if
anybody of you appeared for a Python Interview. Can you please share
the questions you were asked. That will be great help to me.

Thanks,



From grante at visi.com  Tue Oct 30 18:37:03 2007
From: grante at visi.com (Grant Edwards)
Date: Tue, 30 Oct 2007 22:37:03 -0000
Subject: Is there a usenet library for Python?
References: <sbOVi.346015$6L.210871@fe03.news.easynews.com>
Message-ID: <13ifcgf97qjp148@corp.supernews.com>

On 2007-10-30, Just Another Victim of the Ambient Morality <ihatespam at hotmail.com> wrote:

> Is there a Python library to communicate with a usenet server?

Which protocol are you interested in, NNTP (for reading/posting
from a client) or the other one that hosts use to transfer news
feeds amongst themselves (C-NEWS)?  If you google for Python
and the protocl name, I bet you'll find something like this:

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

-- 
Grant Edwards                   grante             Yow! It don't mean a
                                  at               THING if you ain't got
                               visi.com            that SWING!!


From ricaraoz at gmail.com  Tue Oct  2 19:11:46 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Tue, 02 Oct 2007 20:11:46 -0300
Subject: readline() - problem
In-Reply-To: <1191324941.440139.101870@w3g2000hsg.googlegroups.com>
References: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
	<1191324941.440139.101870@w3g2000hsg.googlegroups.com>
Message-ID: <4702D032.2040109@bigfoot.com>

Paul Hankin wrote:
> On Oct 2, 12:25 pm, pi... at kolodziejczyk.waw.pl wrote:
>> Hi!
>> I'm a new user of python, and have problem.
>> I have a plain ascii file:
>> 1aaaaaaaaaaaa1......1
>> 1cccccccccccc2......1
>> 1xxxxxxxxxxxx1......1
>> I want to create a new file which contains only lines with '1' on 15th
>> position.
>> I've tried this:
>>
>> import string
>> f=open('/test/test.asc','r')
>> o=open('/test/out.asc','w')
>> for line in f:
>>     s= f.readline()
>>     if s[15]=='1' :
>>        o.write(s)
>> o.close()
>> f.close()
>>
>> Why it doesn't work ('s' contains ' ' )?
> 
> You're iterating over the lines in f already, so no need to call
> readline.
> 
> for line in f:
>   if line[15] == '1':
>     o.write(line)
> 
> --
> Paul Hankin
> 

Be aware also that the 15th position in your line would be line[14].



From giles.thomas at resolversystems.com  Fri Oct 12 13:25:48 2007
From: giles.thomas at resolversystems.com (Giles Thomas)
Date: Fri, 12 Oct 2007 18:25:48 +0100
Subject: Announcement: Project to get some CPython C extensions running under
	IronPython
Message-ID: <470FAE1C.8020607@resolversystems.com>

The great thing about CPython is that it comes with the batteries 
included.  The problem with IronPython is that some of these batteries 
just don't fit - in particular, most of the the C extensions don't 
work.  We'd like to help fix at least some of this problem, to help 
people who use IronPython to use their CPython scripts without having to 
port everything over to .NET.

Solving the general problem - plugging an arbitrary C extension into 
IronPython - is a huge project, and we're not even sure we could work 
out *how much work it is* without a lot of investigation.  What we 
intend to do is to solve a specific problem, to integrate just one 
extension, and to use that project as a testbed to examine the 
possibilities for getting other extensions working - and perhaps, in the 
long term, solving the general problem.

We think that any solution like this will be valuable not just to us, 
but to the Python community as a whole.  And so, we want to make it Open 
Source.

Right now, we'd really like to hear from people about the following:

    * Who wants to get involved?  We're really keen on working with
      other people on this.
    * Which module should we go for?  NumPy looks like a good start, as
      it gives us a start on getting SciPy working.  But perhaps there
      are better choices.
    * Should this be a new project, or should we be talking to other
      people about getting it into other projects?
    * Which license?  If we're to work on it with a view to building it
      into Resolver One, then it will need to be
      commercial-software-friendly.  Apart from that - we have no view.
    * What is the best architecture?  We're thinking of this as being a
      bit of C# managed code to interface with the C extension, and a
      thin Python wrapper on top.  The module's existing C extension and
      Python code would "sandwich" this layer.  Let us know if this is a
      silly idea :-)
    * Is there anything else we should be thinking about to get this
      started?

Any thoughts much appreciated!


Regards,

Giles

-- 
Giles Thomas
MD & CTO, Resolver Systems Ltd.
giles.thomas at resolversystems.com
+44 (0) 20 7253 6372

We're hiring! http://www.resolversystems.com/jobs/ 

17a Clerkenwell Road, London EC1M 5RD, UK
VAT No.: GB 893 5643 79 
Registered in England and Wales as company number 5467329.
Registered address: 843 Finchley Road, London NW11 8NA, UK

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071012/d09e25fa/attachment.html>

From wojciech at gmail.com  Thu Oct  4 11:11:46 2007
From: wojciech at gmail.com (Wojciech Gryc)
Date: Thu, 04 Oct 2007 08:11:46 -0700
Subject: Python "implements <interface>" equivalent?
Message-ID: <1191510706.528876.261780@57g2000hsv.googlegroups.com>

Hi,

I recently started using Python and am extremely happy with how
productive it's made me, even as a new user. I'm hoping to continue
using the language for my research, and have come across a bit of a
stumbling block.

I'm a seasoned Java programmer and quite a big fan of interfaces...
i.e. The idea that if I make a number of distinct classes that
implement interface X, I can pass them all as parameters to functions
or whatnot that require an X object.

Is there something similar in Python?

What I'd like to do is create a feature detection system for my work
-- specifically, a general class / interface called "Feature" and then
subclasses that implement functions like isFeaturePresent() in all of
their different and unique ways. I'd love to hear how I can do this in
Python.

Thanks,
Wojciech



From fw3 at hotmail.co.jp  Wed Oct  3 13:14:19 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Wed, 3 Oct 2007 17:14:19 +0000
Subject: module confusion
In-Reply-To: <fdvq7h$fbq$1@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1413.1191364484.2658.python-list@python.org> 
	<fdvq7h$fbq$1@lust.ihug.co.nz>
Message-ID: <BLU107-W1F7D9BD82A606725A0AD7B4AF0@phx.gbl>


Hi, 
 
I am moving from Matlab to Python+numpy+scipy. In Matlab you can use function dec2bin, hex2dec, dec2hex bin2dec functions to convert decimal to binary and heximal etc. Before I try to implement my own function in Python, I want to know whether in Python such functionalities are already there.
 
Thanks
 
Frank
_________________________________________________________________
MSN???????EMI Artists?????????????? SCHOOL OF SCHOOL
http://music.jp.msn.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071003/4de7ae67/attachment.html>

From MrJean1 at gmail.com  Sat Oct 27 14:58:01 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Sat, 27 Oct 2007 18:58:01 -0000
Subject: good example of C extension for Mac OS X
In-Reply-To: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
References: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
Message-ID: <1193511481.330926.67500@t8g2000prg.googlegroups.com>

There is a C template in file Modules/xxmodule.c in Python 2.5, maybe
earlier.

/Jean Brouwers


On Oct 27, 8:11 am, chewie54 <dfabrizi... at gmail.com> wrote:
> Hi All,
>
> Does anyone now of a good example to use as template for a  C program
> extension that needs to be built on the Mac OS X.
>
> Thanks,




From aleax at mac.com  Sun Oct 21 21:00:20 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 21 Oct 2007 18:00:20 -0700
Subject: what is the difference between the two kinds of brackets?
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
	<1192898800.059965.272700@q3g2000prf.googlegroups.com>
	<mailman.276.1192948511.13605.python-list@python.org>
	<VsNSi.9044$sm6.7123@nlpi069.nbdc.sbc.com>
Message-ID: <1i6cggk.emlunkb306fnN%aleax@mac.com>

James Stroud <jstroud at mbi.ucla.edu> wrote:
   ...
> > I wonder if its the philosophical difference between:
> > 
> > "Anything not expressly allowed is forbidden"
> > 
> > and
> > 
> > "Anything not expressly forbidden is allowed"  ?
> > 
> > - Hendrik
> 
> The latter is how I interpret any religious moral code--life is a lot
> more fun that way. Maybe that percolates to how I use python?

FYI, in Security the first approach is also known as "Default Deny", the
second one as "Default Permit".
<http://www.ranum.com/security/computer_security/editorials/dumb/>
explains why "default permit" is THE very dumbest one of the "six
dumbest ideas in computer security" which the article is all about.

But then, the needs of Security are often antithetical to everything
else we wish for -- security and convenience just don't mix:-(


Alex


From stefan.behnel-n05pAM at web.de  Tue Oct  9 09:11:03 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Tue, 09 Oct 2007 15:11:03 +0200
Subject: Lamaizm... XML problem...
In-Reply-To: <mailman.18.1191934584.916.python-list@python.org>
References: <mailman.18.1191934584.916.python-list@python.org>
Message-ID: <470B7DE7.1060406@web.de>

durumdara wrote:
> from xml.dom import minidom
[...]
>            t_props = t_comp.getElementsByTagName('prop')
>            for t_prop in t_props:
>                attrs = t_prop.attributes.keys()
>                print attrs
>                print t_prop.nodeName
>                print t_prop.nodeType
>                print [t_prop.nodeValue]
>                sys.exit()
> -------------------
> The result is:
> 
>>>>
> <xml.dom.minidom.Document instance at 0x0172A3C8>
> <DOM Element: properties at 0x1739378>
> [u'id', u'name']
> prop
> 1
> [None]
>>>>
> -------------------
> 
> The source file is:
> 
> <?xml version="1.0" encoding="windows-1250"?>
> <langfile>
> <properties>
> <form>
> <component>
> <prop id="aaaa" name ="bbbb">cccc</prop>
> </component>
> </form>
> </properties>
> <constants>
> </constants>
> </langfile>
> -------------------
> I can get the attrs, but I can't get nodeValue (cccc)... I got None for it.

The W3C DOM treats text as nodes, so you have to check the children of t_prop
to find the text node and then read its nodeValue.

Alternatively, consider using an XML library that actually helps users in
working with XML, such as ElementTree or lxml.

http://codespeak.net/lxml

Stefan


From mail at gedankenkonstrukt.de  Wed Oct 17 07:23:49 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Wed, 17 Oct 2007 13:23:49 +0200
Subject: Inheriting automatic attributes initializer considered harmful?
Message-ID: <ff4rc5$ill$1@newsreader2.netcologne.de>

Hi!

I'm relatively new to Python, so maybe there is an obvious answer to my
question, that I just didn't find, yet.

I've got quite some classes (from a data model mapped with SQL-Alchemy)
that can be instatiated using kwargs for the attribute values. Example:

  class User(object):
      def __init__(self, name=None):
          self.name = name

  u = User(name="user name")

Writing such constructors for all classes is very tedious.
So I subclass them from this base class to avoid writing these constructors:

  class AutoInitAttributes(object):
      def __init__(self, **kwargs):
          for k, v in kwargs.items():
              getattr(self, k) # assure that the attribute exits
              setattr(self, k, v)

Is there already a standard lib class doing (something like) this?
Or is it even harmful to do this?
Although I cannot see any problems with it, I feel very unsafe about
that, because I've not seen this (in the few lines from some tutorials)
before.

Regards
-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From deets at nospam.web.de  Fri Oct 19 07:56:11 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 19 Oct 2007 13:56:11 +0200
Subject: dynamic invoke
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<1192793679.102637.274620@e9g2000prf.googlegroups.com>
Message-ID: <5nrkasFk00g7U1@mid.uni-berlin.de>

Nils wrote:

> On Oct 19, 12:39 pm, lukasz.... at gmail.com wrote:
>> Hello,
>>
>> Is there any way (other then eval) to invoke a method by passing
>> method name in a string.
>> It's very simple in php:
>> $oFoo = new Foo();
>> $dynamiMethod = "bar";
>> $oFoo->$dynamiMethod();
>>
>> Unfortunately I can't find a good solution to do the same thing in
>> python. Does it have some build-in function to do it?
>>
>> Kind Regards,
>>
>> Lukasz.
> 
>  Use apply(): http://docs.python.org/lib/non-essential-built-in-funcs.html

Apply doesn't help the OP - it's useful if you already have a function
pointer.

And it's obsoleted by the * and ** parameter passing mechanism.

Diez


From stef.mientki at gmail.com  Fri Oct  5 19:30:16 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sat, 06 Oct 2007 01:30:16 +0200
Subject: howto kill a windows process by name ?
In-Reply-To: <893A44FF792E904A97B7515CE3419146017BD2CD@volimxs01.thqinc.com>
References: <4706AF37.3000901@gmail.com>
	<893A44FF792E904A97B7515CE3419146017BD2CD@volimxs01.thqinc.com>
Message-ID: <4706C908.4040100@gmail.com>

Adam Pletcher wrote:
> Take a look at "killProcName.py", in the win32 extension package.
>
> - Adam
>
>   
>> -----Original Message-----
>> From: python-list-bounces+adam=volition-inc.com at python.org
>> [mailto:python-list-bounces+adam=volition-inc.com at python.org] On
>>     
> Behalf
>   
>> Of stef mientki
>> Sent: Friday, October 05, 2007 4:40 PM
>> To: python-list at python.org
>> Subject: howto kill a windows process by name ?
>>
>> hello,
>>
>> is there a library to kill a windows process by name ?
>>
>> thanks,
>> Stef Mientki
>> --
>> http://mail.python.org/mailman/listinfo/python-list
>>     
thanks Adam,
that indeed it works,
but googling for killProcName.py I found messages about it being slow,
and indeed it's slow,
and that same google search turned up a faster method, see below.

thanks again,
Stef Mientki



import time
import win32api, win32pdhutil, win32con
import win32pdh, string


# ***********************************************************************
# ***********************************************************************
def GetAllProcesses():
  object = "Process"
  items, instances = win32pdh.EnumObjectItems(None,None,object, 
win32pdh.PERF_DETAIL_WIZARD)
  return instances
# ***********************************************************************


# ***********************************************************************
# ***********************************************************************
def GetProcessID ( name ) :
  object = "Process"
  items, instances = win32pdh.EnumObjectItems(None,None,object, 
win32pdh.PERF_DETAIL_WIZARD)

  val = None
  if name in instances :
    hq = win32pdh.OpenQuery()
    hcs = []
    item = "ID Process"
    path = win32pdh.MakeCounterPath( (None,object,name, None, 0, item) )
    hcs.append(win32pdh.AddCounter(hq, path))
    win32pdh.CollectQueryData(hq)
    time.sleep(0.01)
    win32pdh.CollectQueryData(hq)

    for hc in hcs:
      type, val = win32pdh.GetFormattedCounterValue(hc, 
win32pdh.PDH_FMT_LONG)
      win32pdh.RemoveCounter(hc)
    win32pdh.CloseQuery(hq)
    return val
# ***********************************************************************


"""
THIS IS SLOW !!
def Kill_Process ( process ) :
  #get process id's for the given process name
  pids = win32pdhutil.FindPerformanceAttributesByName ( process )
  for p in pids:
    handle = win32api.OpenProcess(win32con.PROCESS_TERMINATE, 0, p) #get 
process handle
    win32api.TerminateProcess(handle,0) #kill by handle
    win32api.CloseHandle(handle)        #close api
"""

# ***********************************************************************
# ***********************************************************************
def Kill_Process_pid ( pid ) :
  handle = win32api.OpenProcess(win32con.PROCESS_TERMINATE, 0, pid) #get 
process handle
  win32api.TerminateProcess(handle,0) #kill by handle
  win32api.CloseHandle(handle)        #close api
# ***********************************************************************


# ***********************************************************************
# ***********************************************************************
def Kill_Process ( name ) :
  pid = GetProcessID ( name)
  if pid:
    Kill_Process_pid ( pid )
# ***********************************************************************


# ***********************************************************************
# ***********************************************************************
if __name__ == "__main__":
  a = GetAllProcesses()
  print a

  process = 'UPD'
  Kill_Process ( process )

# ***********************************************************************





From paul.hankin at gmail.com  Wed Oct  3 03:34:17 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 03 Oct 2007 07:34:17 -0000
Subject: List Question
In-Reply-To: <1191362956.983941.248450@50g2000hsm.googlegroups.com>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
	<1191360038.845477.170160@22g2000hsm.googlegroups.com>
	<1191362956.983941.248450@50g2000hsm.googlegroups.com>
Message-ID: <1191396857.840699.285670@y42g2000hsy.googlegroups.com>

On Oct 2, 11:09 pm, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 2, 4:20 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> > On Oct 2, 10:06 pm, brad <byte8b... at gmail.com> wrote:
>
> > > How is this expressed in Python?
>
> > > If x is in y more than three times:
> > >      print x
>
> > > y is a Python list.
>
> > Or the slightly-too-flashy version:
> > if sum(1 for a in y if x == a) > 3:
> >     print x
>
> As long as you are eschewing count for sum, don't forget that true is
> 1 and false is 0:
>
> if sum(x==a for a in y) > 3:
>     print x

I like it!

--
Paul Hankin



From kyosohma at gmail.com  Wed Oct 24 20:57:02 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: 24 Oct 2007 17:57:02 -0700
Subject: Is this a wx bug?
In-Reply-To: <ffm2ab01btn@news4.newsguy.com>
References: <ffm2ab01btn@news4.newsguy.com>
Message-ID: <1193234670.197272.169270@q3g2000prf.googlegroups.com>

On Oct 23, 7:06 pm, Chris Carlen <crcarleRemoveT... at BOGUSsandia.gov>
wrote:
> Hi:
>
> #!/usr/bin/env python
>
> """From listing 3.3 in 'wxPython in Action'
> Demonstrates that something funny happens when you click&hold in the
> frame, then drag the mouse over the button window.  The
> wx.EVT_ENTER_WINDOW event is missed.  The wx.EVT_LEAVE_WINDOW event is
> NOT missed when you click&hold the mouse button over the button, and
> leave the button window."""
>
> import wx
>
> class MouseEventFrame(wx.Frame):
>      def __init__(self, parent, id):
>          wx.Frame.__init__(self, parent, id, title="Listing 3.3",
> size=(300, 100))
>          self.panel = wx.Panel(self)
>          self.button = wx.Button(self.panel, label="Not over", pos=(100,
> 15))
>          self.Bind(wx.EVT_BUTTON, self.OnButtonClick, self.button)
>          self.button.Bind(wx.EVT_ENTER_WINDOW, self.OnEnterWindow)
>          self.button.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)
>
>      # This is not critical to demonstrating the 'bug', but just provides
>      # feedback that the wx.EVT_BUTTON events are working correctly
>      # in relation to entering/leaving the button window.
>      def OnButtonClick(self, event):
>          if self.panel.GetBackgroundColour() == "Green":
>              self.panel.SetBackgroundColour("Red")
>          else: self.panel.SetBackgroundColour("Green")
>          self.panel.Refresh()
>
>      def OnEnterWindow(self, event):
>          self.button.SetLabel("Over")
>          event.Skip()
>
>      def OnLeaveWindow(self, event):
>          self.button.SetLabel("Not over")
>          event.Skip()
>
> if __name__ == '__main__':
>      app = wx.PySimpleApp()
>      frame = MouseEventFrame(None, id=-1)
>      frame.Show()
>      app.MainLoop()
>
> --
> Good day!
>
> ________________________________________
> Christopher R. Carlen
> Principal Laser&Electronics Technologist
> Sandia National Laboratories CA USA
> crcarleRemoveT... at BOGUSsandia.gov
> NOTE, delete texts: "RemoveThis" and
> "BOGUS" from email address to reply.

I cannot replicate this issue. It works correctly for me with Python
2.4, wxPython 2.8.4.2 (msw-unicode) on Windows XP SP2.

What version of Python/wxPython are you using? OS? It may just be that
you need to upgrade your wxPython or it's a bug on Mac/Linux. You
should post this to the wxPython mailing group here: http://www.wxpython.org/maillist.php

Mike



From josiah.carlson at gmail.com  Thu Oct 25 00:46:12 2007
From: josiah.carlson at gmail.com (Josiah Carlson)
Date: Thu, 25 Oct 2007 04:46:12 -0000
Subject: Adding idle timeout capabilities to asyncore
In-Reply-To: <mailman.381.1193157052.13605.python-list@python.org>
References: <1193153659.869282.34310@v23g2000prn.googlegroups.com>
	<mailman.381.1193157052.13605.python-list@python.org>
Message-ID: <1193287572.069324.91860@q3g2000prf.googlegroups.com>

On Oct 23, 9:30 am, Jean-Paul Calderone <exar... at divmod.com> wrote:
> On Tue, 23 Oct 2007 15:34:19 -0000, Josiah Carlson <josiah.carl... at gmail.com> wrote:
> > [snip]
>
> >Calling time.time() is relatively inexpensive in comparison to pure
> >Python function calls, but indeed, it could be a bottleneck.
>
> Did you benchmark this on some system?
>
> There isn't really any "pure Python function calls" that can replace
> time.time() in a sensible way, so I made up one that does some random
> things (including calling another Python function) and compared it to
> time.time:
>
>   exarkun at charm:~$ python -m timeit -s '
>   def g():
>       return 1. + 2 + 3 * 4 - 5 / 6 + 7 ** 8
>   def f():
>       return g()
>   ' 'f()'
>   1000000 loops, best of 3: 1.39 usec per loop
>   exarkun at charm:~$ python -m timeit -s 'from time import time as f' 'f()'
>   100000 loops, best of 3: 4.68 usec per loop
>   exarkun at charm:~$
>
> Not really useful in any real-world sense, but I still wouldn't
> characterize time.time as "relatively inexpensive."
>
> Of course, for any real-world work, one would want to profile the
> application to determine if removing calls to time.time() could
> make a worthwhile difference.

The particular function call he was talking about was the .readable()
or .writable() in an asyncore.dispatcher subclass.  Now, the trick
with any nontrivial asyncore.dispatcher subclass is that you don't
want to signal a socket as writable if you don't have any outgoing
buffer.  Similarly, I have seen subclasses that follows a state
machine very strictly (no pipelining, you must finish sending before
you can receive, etc.).  In that sense, typically, both
the .readable() and .writable() methods will reference an attribute or
two of the instance.

After running some tests, I notice that it seems like a not
insignificant platform difference.  Because on my platform (Windows
and Python 2.3)...

>>> setup = '''def g(): return 1. + 2 + 3 * 4 - 5 / 6 + 7 ** 8'''
>>> timeit.Timer('g()', setup).repeat()
[2.0143674536171798, 1.9778226522165654, 1.9959138650798764]
>>> setup = '''
... class foo(object):
...     __slots__ = 'a', 'b'
...     def __init__(self):
...             self.a = 1
...             self.b = 2
...     def foo(self):
...             return self.a and self.b
...
... inst = foo()
... '''
>>> timeit.Timer('inst.foo()', setup).repeat()
[1.4185994550779242, 1.4186812879064519, 1.4478852871044694]
>>> timeit.Timer('f()', 'f = lambda:None').repeat()
[0.58938552412047329, 0.58762154196472238, 0.58324245809257036]
>>> timeit.Timer('f()', 'from time import time as f').repeat()
[0.68104482574668168, 0.64085672667252425, 0.6558844364245715]

So to answer your question, even though I hadn't bothered to test it,
my beliefs regarding time.time() being fast in relation to the
particular operation he was expecting to perform, at least according
to my own experience on the platform I use the most (Windows and
Python 2.3) was relatively accurate, though indeed it is slower (but
not much in comparison to what those calls would typically do).

Then again, in the subclasses of asyncore that I write, I don't bother
calling .readable() or .writable() at all, each socket adds and
removes itself from a pair of readable and writable dictionaries
automatically, thus removing perhaps hundreds of function calls for
every loop of asyncore.poll .

What these experiments also tell me is that fetching the time on linux
is slow.  But really, since I already wrote code that handles *all* of
the timeout handling with a *single* time.time() call, and that also
generally minimizes all explicit function calls, I'm not sure that
your testing examples were ultimately germane to the conversation (how
would one handle timeouts in asyncore).  Or maybe it's just late and
I've had a long day :/ .


In any case, I'm glad that I was able to help Giampaolo.
 - Josiah



From root at dev.nul.invalid  Tue Oct 23 00:47:39 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 06:47:39 +0200 (CEST)
Subject: Python - why don't this script work?
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
	<5o5bu7Fks244U1@mid.individual.net>
Message-ID: <Xns99D2811BFCB3MyBigKitty@194.177.96.26>

"J.O. Aho" <user at example.net> wrote in
news:5o5bu7Fks244U1 at mid.individual.net: 

> Check line 59 in the python script and you see which command you are
> missing. I bet you didn't read what it said on the page
> http://web.mit.edu/pgbovine/www/image-harvester.htm
> 
> Install the programs that mentioned on the page before you use the
> python script. 

I figured it out, see my other reply. I have to run this command begining 
with "python". I still don't get the results I want but I think it is 
because the images are protected with script. My other post in this thread 
gives the details. If you have more ideas, I am all ears.

Thanks AHO.

-- 
~Ohmster | ohmster /a/t/ ohmster dot com
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From mrstephengross at hotmail.com  Tue Oct 23 17:51:20 2007
From: mrstephengross at hotmail.com (mrstephengross)
Date: Tue, 23 Oct 2007 21:51:20 -0000
Subject: How to find out which functions exist?
In-Reply-To: <5o76tgFld8c9U10@mid.uni-berlin.de>
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
	<5o76tgFld8c9U10@mid.uni-berlin.de>
Message-ID: <1193176280.003067.269950@i13g2000prf.googlegroups.com>

> Take a look at the `issubclass()` function.

Ok, I see how to use issubclass(). How can I get a list of classes
present in the file?

--Steve



From azureenigma at gmail.com  Thu Oct 11 15:13:43 2007
From: azureenigma at gmail.com (BlueCrux)
Date: Thu, 11 Oct 2007 19:13:43 -0000
Subject: Library for crawling forums
Message-ID: <1192130023.125026.271530@r29g2000hsg.googlegroups.com>

I'm trying to write a utility to crawl forums and strip posts to be
gone through offline. Just the content, I don't need to get who posted
or sigs or any identifying info.

Can anyone suggest a library that is already geared toward this?



From maxerickson at gmail.com  Wed Oct  3 07:21:04 2007
From: maxerickson at gmail.com (Max Erickson)
Date: Wed, 3 Oct 2007 11:21:04 +0000 (UTC)
Subject: setuptools without unexpected downloads
References: <87ejgmklep.fsf@benfinney.id.au>
	<1190802526.695391.326220@n39g2000hsh.googlegroups.com>
	<5lurorFa92euU1@mid.uni-berlin.de>
	<1190805012.275901.227570@57g2000hsv.googlegroups.com>
	<5luv0iFaai82U1@mid.uni-berlin.de>
	<1190808836.056298.232640@57g2000hsv.googlegroups.com>
	<fddivk$f90$1@sea.gmane.org>
	<mailman.1111.1190813942.2658.python-list@python.org>
	<1190840682.716950.131830@r29g2000hsg.googlegroups.com>
	<mailman.1164.1190908383.2658.python-list@python.org>
	<1191330684.132452.179580@y42g2000hsy.googlegroups.com>
	<op.tzlr3hl4x6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <Xns99BE4AAC5CDFBmaxericksongmailcom@80.91.229.5>

"Gabriel Genellina" <gagsl-py2 at yahoo.com.ar> wrote:
...
> This recent blog post contains step-by-step instructions on using
> free  tools to compile python extensions:  
> <http://boodebr.org/main/python/build-windows-extensions>
> -- 
...

The package available here:

http://www.develer.com/oss/GccWinBinaries

is quite a lot more straightforward. You do have to be okay with using 
GCC 4.1 though. As a bonus, it supports versions of python that link 
against several different versions of the Microsoft runtime, rather 
than just one.


max



From arkanes at gmail.com  Tue Oct  9 11:28:55 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 10:28:55 -0500
Subject: Native class methods
In-Reply-To: <87r6k4iac6.fsf@keizer.soze.com>
References: <87r6k4iac6.fsf@keizer.soze.com>
Message-ID: <4866bea60710090828if57ab1t58517b3ba15dbf4a@mail.gmail.com>

On 09 Oct 2007 17:20:09 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
>
> Is there an easy way to implement a specific method of a Python class
> in C? Like a native method in Java? I would really like to do the
> majority of my class code in Python and just do one or two methods
> in C.
>
>  S.
>

Weave kinda does this - you can use it write inline C code, which it
extracts and compiles for you. (http://scipy.org/Weave)

You might also want to look at Pyrex and/or Cython, which let you
write in a Python-like language that is compiled to C.
(http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/ and
http://cython.org).

Depending on what you want to do in C, just writing it as a normal
shared library and calling it with ctypes might also be an effective
solution. (in the standard library, as of 2.5)


From gagsl-py2 at yahoo.com.ar  Thu Oct 18 00:25:48 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 01:25:48 -0300
Subject: Pull Last 3 Months
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
	<1192665202.277171.132880@t8g2000prg.googlegroups.com>
	<4716AD36.8040302@tim.thechases.com>
Message-ID: <op.t0dk9acqx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 17 Oct 2007 21:47:50 -0300, Tim Chase  
<python.list at tim.thechases.com> escribi?:

> In the event that you need them in whatever your locale is, you
> can use the '%b' formatting to produce them:

I prefer the calendar module in that case:

py> import locale
py> locale.setlocale(locale.LC_ALL, '')
'Spanish_Argentina.1252'
py>
py> import calendar
py> calendar.month_abbr[12]
'Dic'
py> def prev_months(since, howmany):
...   return [calendar.month_abbr[(since.month-i-2) % 12 + 1] for i in  
range(how
many)]
...
py> import datetime
py> prev_months(datetime.datetime(2005,2,10), 4)
['Ene', 'Dic', 'Nov', 'Oct']
py> prev_months(datetime.datetime(2005,10,17), 3)
['Sep', 'Ago', 'Jul']

-- 
Gabriel Genellina



From bignose+hates-spam at benfinney.id.au  Mon Oct  1 09:44:30 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 01 Oct 2007 23:44:30 +1000
Subject: reliable unit test logging
References: <mailman.1331.1191237975.2658.python-list@python.org>
Message-ID: <871wcfx83l.fsf@benfinney.id.au>

Vyacheslav Maslov <vmaslov at swsoft.com> writes:

> I have many many many python unit test, which are used for testing
> some remote web service.

Part of your confusion comes from the fact that "test a remote
service" isn't what a unit test does.

A unit test is one that executes a very *limited* part of the code: it
tests a code unit, not the whole system, and makes a simple set of
assertions about the result. If there are accesses to remote services
over the network, that's far beyond the scope of a unit test.

I don't doubt that you may be using the Python standard library module
'unittest' to perform these tests. But they're not unit tests; they're
integration tests, or system tests, or performance tests, or something
else.

> Can someone explain my why so simple feature like logging of
> timestamps during test execution was not implemented in any
> extension?

Probably because the most important thing to know for the purpose of a
unit test is whether the yes/no assertions were violated. Knowing when
the tests start and finish isn't interesting. If start and finish
times *are* interesting for your tests, you're *not* doing unit
testing, but some other form of testing like performance tests.


That said, you *can* certainly instrument the unittest.TestCase with
timings if you want to use it for a performance test. Every instance
of a TestCase will invoke its setUp method to set up test fixtures,
and its tearDown method to tear down fixtures. You can use that hook
to implement logging.

Untested code, that should give you enough to try it out yourself:

    import unittest
    import logging

    logging.basicConfig(level=logging.INFO,
                        datefmt="%Y-%m-%d %H:%M:%S",
                        format="%(asctime)s:%(levelname)s:%(message)s")

    class TimedTestCase(unittest.TestCase):
        """ A test case that will log its start and end times """

        def setUp(self):
            """ Set up test fixtures """
            logging.info("test case setup")

        def tearDown(self):
            """ Tear down test fixtures """
            logging.info("test case teardown")

    class Test_FooBar(TimedTestCase):
        """ Test cases for FooBar """

        def test_slices_spam(self):
            """ FooBar should slice spam """
            self.failUnless(sends_spam)

        def test_eats_eggs(self):
            """ FooBar should eat eggs """
            self.failUnless(eats_eggs)

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


From jon at ffconsultancy.com  Sun Oct 14 01:54:39 2007
From: jon at ffconsultancy.com (Jon Harrop)
Date: Sun, 14 Oct 2007 06:54:39 +0100
Subject: First class lexical closures
Message-ID: <13h3c8qgq6gic3b@corp.supernews.com>


Just debating somewhere else whether or not Python might be considered a
functional programming language. Lua, Ruby and Perl all seem to provide
first class lexical closures.

What is the current state of affairs in Python? Last time I looked they were
just removing (?!) closures...

-- 
Dr Jon D Harrop, Flying Frog Consultancy
http://www.ffconsultancy.com/products/?u


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 07:31:05 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 12:31:05 +0100
Subject: sharing vars with different functions
In-Reply-To: <1193648594.380143.153450@o38g2000hse.googlegroups.com>
References: <1193648594.380143.153450@o38g2000hse.googlegroups.com>
Message-ID: <4725c479$0$4627$426a74cc@news.free.fr>

scripteaze at gmail.com a ?crit :
> Im tryin to call 

s/call/access/

> a var thats sitting

s/sitting/defined/

> in a function, example:

In this example, s/function/class/

> class someclass(object):

pep08 : should be SomeClass(object):

>          somevar = open(blah, 'r').readlines()

Doing IO in the body of a class statement is IMHO a *very* bad idea.

> 
> def something():
> 
>         for line in somevar:
>              print line
> -----------------------------------------------------------------------
> 
> i  guess im not graspng the whole global or local var topic..

Seems there are a couple other points you're net yet grasping. Anyway, 
in this case, you should pass the iterable object to your function:

def something(iterable):
     for line in iterable:
         print line

something(someclass.somevar)




From robin at reportlab.com  Fri Oct 19 10:16:07 2007
From: robin at reportlab.com (Robin Becker)
Date: Fri, 19 Oct 2007 15:16:07 +0100
Subject: deepcopy debugging
Message-ID: <4718BC27.1070702@chamonix.reportlab.co.uk>

I'm using deepcopy in some code which eventually ends up by crash witht he 
following rather long winded error. I'm not directly using _hashlib.HASH, but I 
suppose something else along the way could be. Is there some nice way to make 
copy/deepcopy give more information when this error happens? I know what the top 
level object is, but presumably it's something further down that's causing the 
problem.

.........

   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 291, in _deepcopy_inst
     state = deepcopy(state, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 254, in _deepcopy_dict
     y[deepcopy(key, memo)] = deepcopy(value, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 234, in _deepcopy_tuple
     y.append(deepcopy(a, memo))
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 227, in _deepcopy_list
     y.append(deepcopy(a, memo))
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 291, in _deepcopy_inst
     state = deepcopy(state, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 254, in _deepcopy_dict
     y[deepcopy(key, memo)] = deepcopy(value, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 234, in _deepcopy_tuple
     y.append(deepcopy(a, memo))
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 234, in _deepcopy_tuple
     y.append(deepcopy(a, memo))
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 291, in _deepcopy_inst
     state = deepcopy(state, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 254, in _deepcopy_dict
     y[deepcopy(key, memo)] = deepcopy(value, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 291, in _deepcopy_inst
     state = deepcopy(state, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 254, in _deepcopy_dict
     y[deepcopy(key, memo)] = deepcopy(value, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 291, in _deepcopy_inst
     state = deepcopy(state, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 254, in _deepcopy_dict
     y[deepcopy(key, memo)] = deepcopy(value, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 291, in _deepcopy_inst
     state = deepcopy(state, memo)
   File "C:\Python\lib\copy.py", line 162, in deepcopy
     y = copier(x, memo)
   File "C:\Python\lib\copy.py", line 254, in _deepcopy_dict
     y[deepcopy(key, memo)] = deepcopy(value, memo)
   File "C:\Python\lib\copy.py", line 189, in deepcopy
     y = _reconstruct(x, rv, 1, memo)
   File "C:\Python\lib\copy.py", line 322, in _reconstruct
     y = callable(*args)
   File "C:\Python\lib\copy_reg.py", line 92, in __newobj__
     return cls.__new__(cls, *args)
TypeError: object.__new__(_hashlib.HASH) is not safe, use _hashlib.HASH.__new__()
-- 
Robin Becker



From python.list at tim.thechases.com  Thu Oct  4 13:50:01 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 04 Oct 2007 12:50:01 -0500
Subject: using regular express to analyze lisp code
In-Reply-To: <1191518039.676797.290620@22g2000hsm.googlegroups.com>
References: <1191518039.676797.290620@22g2000hsm.googlegroups.com>
Message-ID: <470527C9.7090506@tim.thechases.com>

> i've spent couple of hours trying to figure out the correct regular
> expression to catch a VisualLisp 
[snipped]
> "(defun foo", but it is hard to find the ")" at the end of code block.
> if eventually i can't come up with the solution using regular
> expression only, what i was thinking is after finding the beginning
> part, which is "(defun foo" in this case, i can count the parenthesis,
> ignoring anything inside "" and any line for comment, until i find the
> closing ")".


"""
	Some people, when confronted with a problem, think
	"I know, I'll use regular expressions!"
	Now they have two problems
"""


Regular expressions are a wonderful tool when the domain is 
correct.  However, when your domain involves processing 
arbitrarily nested syntax, regexps are not your friend.  It is 
sometimes feasible to mung them into a fixed-depth-nesting 
parser, but it's always fairly painful, and the fixed-depth is an 
annoying limitation.

Use a parsing lib.  I've tinkered a bit with PyParsing[1] which 
is fairly easy to pick up, but powerful enough that you're not 
banging your head against limitations.  There are a number of 
other parsing libraries[2] with various domain-specific features 
and audiences, but I'd go browsing through them only if PyParsing 
doesn't fill the bill.

As you don't detail what you want to do with the content or how 
pathological the input can be, but you might be able to get away 
with just skimming through the input and counting open-parens and 
close-parens, stopping when they've been balanced, skipping lines 
with comments.

-tkc

[1] http://pyparsing.wikispaces.com/
[2] http://nedbatchelder.com/text/python-parsers.html


From aisaac at american.edu  Mon Oct 29 12:08:03 2007
From: aisaac at american.edu (Alan Isaac)
Date: Mon, 29 Oct 2007 16:08:03 GMT
Subject: simple try/except question
In-Reply-To: <1193673818.436235.35290@y42g2000hsy.googlegroups.com>
References: <xfnVi.9506$aJ3.5968@trnddc02>
	<1193673818.436235.35290@y42g2000hsy.googlegroups.com>
Message-ID: <DznVi.6080$R%4.3711@trnddc05>

False alarm.
Fresh start of interpreter and all is well.
Apologies.
Still tracking.
Alan


From skip at pobox.com  Wed Oct 24 10:06:56 2007
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 24 Oct 2007 09:06:56 -0500
Subject: Parameters in context manager's __enter__ method?
Message-ID: <18207.20864.61694.464417@montanaro.dyndns.org>


I am working on a file locking class which I'd like to work with Python
2.5's context managers.  The acquire method takes an optional timeout
argument:

    class FileLock:
        ...
        def acquire(self, timeout=None):
            ...

        def __enter__(self):
            self.acquire()
            return self

Can that optional timeout be somehow accommodated by the with statement?
(I'm thinking no, which may not be a big shortcoming anyway.)

Thx,

Skip




From steven.bethard at gmail.com  Wed Oct 24 01:44:36 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 23 Oct 2007 23:44:36 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471e7973$0$28547$426a74cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
	<mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
	<471e431f$0$21451$426a34cc@news.free.fr>
	<nuydnd4YcMaWwYPanZ2dnUVZ_hGdnZ2d@comcast.com>
	<471e713f$0$5252$426a34cc@news.free.fr>
	<i4KdndpZk9ED7oPanZ2dnUVZ_judnZ2d@comcast.com>
	<471e7973$0$28547$426a74cc@news.free.fr>
Message-ID: <-bqdnfGfkvdeRoPanZ2dnUVZ_jydnZ2d@comcast.com>

Bruno Desthuilliers wrote:
> Now how does your desire for documentation imply that "if you're 
> creating a class for the first time, it should *never* use property()" ? 

Of course, there's *never* any such thing as "never" in Python. ;-)

STeVe

P.S. If you really don't understand what I was getting at there, feel 
free to contact me off-list. I think I've polluted c.l.py enough. ;-)


From dpsanders at gmail.com  Mon Oct 29 18:29:58 2007
From: dpsanders at gmail.com (David Sanders)
Date: Mon, 29 Oct 2007 22:29:58 -0000
Subject: Function to resize global numpy array interactively in ipython
In-Reply-To: <mailman.592.1193677679.13605.python-list@python.org>
References: <1193640814.316757.145890@i38g2000prf.googlegroups.com>
	<mailman.592.1193677679.13605.python-list@python.org>
Message-ID: <1193696998.925753.33870@i38g2000prf.googlegroups.com>

On Oct 29, 11:07 am, Robert Kern <robert.k... at gmail.com> wrote:
> David Sanders wrote:
> > Hi,
>
> > I have a script with function definitions which I load into ipython
> > for interactive use.
> > These functions modify a global numpy array, whose size I need to be
> > able to change interactively.  I thus have a script which looks like
> > this:
>
> > from numpy import *
>
> > def do_resize(N):
> >    global a
> >    a = resize(a, N)
>
> > a = array([])
>
> > N=10; do_resize(N)
> > print "Length of a is: ", len(a)
> > N=20; do_resize(N)
> > print "Length of a is: ", len(a)
>
> > If I run this in ipython, using "run resize.py", it correctly outputs
> > 10 and then 20.
> > If I now type *interactively*  N=30; do_resize(N),  then the length of
> > a is still 20, rather than 30 as I was hoping -- somehow I seem to be
> > now dealing with a different copy of a?
>
> > Doing the same thing in idle works as I expect, i.e. interactively the
> > size is changed to 30.
>
> > Could somebody please explain what's going on, and how I solve the
> > problem?
>
> By default, %run executes the script in its own namespace. Then the interactive
> prompt's namespace gets updated with the values in that namespace. The global
> statement refers to that initial namespace, not the one of the interactive
> prompt. Give "%run -i resize.py" a try, though. That should execute the code in
> the interactive prompt's namespace.

Great, that's exactly what I needed!
Thanks very much.

David.



From lasses_weil at klapptsowieso.net  Fri Oct 26 09:36:48 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Fri, 26 Oct 2007 15:36:48 +0200
Subject: Python Windows Installation
In-Reply-To: <5oe457Fmh7lsU1@mid.individual.net>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
	<13i09eohrt6il52@corp.supernews.com>
	<5oc23kFm4aqfU1@mid.individual.net>
	<47210600$0$4375$9b4e6d93@newsspool4.arcor-online.net>
	<5oe457Fmh7lsU1@mid.individual.net>
Message-ID: <4721ed72$0$4370$9b4e6d93@newsspool4.arcor-online.net>

Bjoern Schliessmann wrote:
> Wildemar Wildenburger wrote:
>> Bjoern Schliessmann wrote:
> 
>>> Which I don't understand (works best for me, and is best practice
>>> in Windows).
>>  
>> Best practice? Says who?
> 
> Ok, LOL. So, now you expect me to cite some official source? Despite
> the fact that the vast majority of windows installers on this
> planet use "%PROGRAMFILES%\Program Name" as default installation
> path, particularly the ones for Microsoft's programs?
> 

Of course, but that would constitute "common practice". "Best practice" 
in my book is the one that causes the least trouble, which 
names-with-whitespace clearly don't. Though by this day and age, I admit 
that programs causing the trouble are the culprits and can be declared 
broken, not the admission of whitesapce.

/W
(God I seem humorless in this one ... ;))


From odalrick at hotmail.com  Sat Oct 20 09:47:58 2007
From: odalrick at hotmail.com (Odalrick)
Date: Sat, 20 Oct 2007 06:47:58 -0700
Subject: weakref pitfall
Message-ID: <1192888078.740427.222640@t8g2000prg.googlegroups.com>

I'm trying to write a simple game and decided I need an eventmanager.

<code>
import weakref
from collections import defaultdict

class _EventManager( object ):
    def __init__( self ):
        self._handled_events =
defaultdict( weakref.WeakKeyDictionary )

    def register( self, handler, event_type, filter=None ):
        self._handled_events[event_type][handler] = filter

    def deregister( self, handler, event_type ):
        self._handled_events[event_type].pop( handler, None  )

    def handle_event( self, event ):
        event_type = event.type
        for handler, filter in
self._handled_events[event_type].items():
            if filter == None or filter(event):
                handler( event )

eventmanager = _EventManager()

__all__ = [ eventmanager ]
</code>

Fairly simple, yet there was some strange bug that prevented my game
from exiting.

I think what happened was that when __init__ ends, self goes out of
scope, and by extension so does self.handle_quit, Now there are no
more refeences to self.handle_quit, because weakrefs don't count, and
the event gets automatically dropped from my eventmanager. I thought
that wouldn't happen because handle_quit is part of the class and
instance MainGame.

Am I right in my guess? If so, how should I adress this bug? If not,
what is the bug?

<code>
import pygame
from eventmanager import eventmanager

class MainGame( object ):
    def __init__( self, width=1024, height=768 ):
        #Initialize PyGame
        pygame.init()
        self.width = width
        self.height = height
        self.quit_game = False
        #Create the Screen
        self.screen = pygame.display.set_mode( ( self.width,
self.height ) )
        eventmanager.register( self.handle_quit, pygame.QUIT )
        eventmanager.register( self.handle_quit, pygame.KEYDOWN,
key_filter( pygame.K_ESCAPE ) )

    def mainloop( self ):
        handle_event = eventmanager.handle_event
        self.quit_game = False
        while not self.quit_game:
            for event in pygame.event.get():
                handle_event( event )

    def handle_quit( self, event=None ):
        self.quit_game = True

def key_filter( key ):
    def filter( event ):
        return event.key == key
    return filter

def handle_print_event( event ):
    print str( event )

if __name__ == "__main__":
    game = MainGame()
    game.mainloop()
</code>



From bignose+hates-spam at benfinney.id.au  Fri Oct  5 21:24:27 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 06 Oct 2007 11:24:27 +1000
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
	<1191616293.965858.43000@d55g2000hsg.googlegroups.com>
	<7xd4vtw6b0.fsf@ruckus.brouhaha.com>
Message-ID: <871wc9qblg.fsf@benfinney.id.au>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:

> Giampaolo Rodol? <gnewsg at gmail.com> writes:
> > def test_answer():
> >     assert 42 == 43
> > 
> > What's the equivalent of unittest's "assertRaises"?
> 
> def test_raises():
>     try:
>        thingy()
>        assert 42 == 43

Clearer would be:

        assert False

>     except GoodException:
>        pass

-- 
 \        "Some people, when confronted with a problem, think 'I know, |
  `\       I'll use regular expressions'. Now they have two problems." |
_o__)                           ?Jamie Zawinski, in alt.religion.emacs |
Ben Finney


From parnell.s at comcast.net  Thu Oct 18 22:44:27 2007
From: parnell.s at comcast.net (Ixiaus)
Date: Thu, 18 Oct 2007 19:44:27 -0700
Subject: Noob: Loops and the 'else' construct
Message-ID: <1192761867.254928.115300@i38g2000prf.googlegroups.com>

I have just come across a site that discusses Python's 'for' and
'while' loops as having an (optional) 'else' structure.

At first glance I interpreted it as being a bit like the 'default'
structure in PHP's switch block... But the switch block isn't a loop,
so, I am now confused as to the reason for using 'else' with the for
and while loops...

A few quick tests basically show that statements in the else structure
are executed at the fulfillment of the loop's expression (ie, no
break).

Example:

for i in range(10):
         print i
else:
         print 'the end!'

0
1
2
3
4
5
6
7
8
9
10
the end!



From robert.kern at gmail.com  Mon Oct 29 13:07:04 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 29 Oct 2007 12:07:04 -0500
Subject: Function to resize global numpy array interactively in ipython
In-Reply-To: <1193640814.316757.145890@i38g2000prf.googlegroups.com>
References: <1193640814.316757.145890@i38g2000prf.googlegroups.com>
Message-ID: <fg53vp$fc4$1@ger.gmane.org>

David Sanders wrote:
> Hi,
> 
> I have a script with function definitions which I load into ipython
> for interactive use.
> These functions modify a global numpy array, whose size I need to be
> able to change interactively.  I thus have a script which looks like
> this:
> 
> from numpy import *
> 
> def do_resize(N):
> 	global a
> 	a = resize(a, N)
> 
> a = array([])
> 
> N=10; do_resize(N)
> print "Length of a is: ", len(a)
> N=20; do_resize(N)
> print "Length of a is: ", len(a)
> 
> 
> If I run this in ipython, using "run resize.py", it correctly outputs
> 10 and then 20.
> If I now type *interactively*  N=30; do_resize(N),  then the length of
> a is still 20, rather than 30 as I was hoping -- somehow I seem to be
> now dealing with a different copy of a?
> 
> Doing the same thing in idle works as I expect, i.e. interactively the
> size is changed to 30.
> 
> Could somebody please explain what's going on, and how I solve the
> problem?

By default, %run executes the script in its own namespace. Then the interactive
prompt's namespace gets updated with the values in that namespace. The global
statement refers to that initial namespace, not the one of the interactive
prompt. Give "%run -i resize.py" a try, though. That should execute the code in
the interactive prompt's namespace.

-- 
Robert Kern

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



From stephan.diehl at gmx.net  Fri Oct 26 09:09:48 2007
From: stephan.diehl at gmx.net (Stephan Diehl)
Date: Fri, 26 Oct 2007 15:09:48 +0200
Subject: "Standard" Full Text Search Engine
References: <mailman.475.1193402986.13605.python-list@python.org>
Message-ID: <ffsouh$7b8$02$1@news.t-online.com>

Martin Marcher wrote:

> Hello,
> 
> is there something like a standard full text search engine?
> 
> I'm thinking of the equivalent for python like lucene is for java or
> ferret for rails. Preferrably something that isn't exactly a clone of
> one of those but more that is python friendly in terms of the API it
> provides.
> 
> Things I'd like to have:
> 
>  * different languages are supported (it seems most FTSs do only english)
>  * I'd like to be able to provide an identifier (if I index files in
> the filesystem that would be the filename, or an ID if it lives in a
> database, or whatever applies)
>  * I'd like to pass it just some (user defined) keywords with content,
> the actual content (as string, or list of strings or whatever) and to
> retrieve the results by search by keyword
>  * something like a priority should be assignable to different fields
> (like field: title(priority=10, content="My Draft"),
> keywords(priority=50, list_of_keywords))
> 
> Unnecessary:
> 
>  * built-in parsing of different files
> 
> The "standard" I'm referring to would be something with a large and
> active user base. Like... WSGI is _the_ thing to refer to when doing
> webapps it should be something like $FTS-Engine is _the_ engine to
> refer to.
> 
> any hints?
> 

I'm using swish-e (swish-e.org) for all my indexing needs. I'm not sure if
there's a python binding available, I'm using swish-e as an external
executable and live quite happyly with that.



From eugene.druker at gmail.com  Sun Oct  7 03:08:11 2007
From: eugene.druker at gmail.com (ezd)
Date: Sun, 07 Oct 2007 00:08:11 -0700
Subject: Tkinter text widget
In-Reply-To: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
References: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
Message-ID: <1191740891.034348.52560@d55g2000hsg.googlegroups.com>

On Oct 6, 11:18 pm, goldtech <goldt... at worldpost.com> wrote:
> I thought the "DISABLED" made it so I could not edit it. But it also
> makes it so I can not scroll down. If you make the window smaller than
> the content then try to put a cursor in there to use up/down arrow you
> can't.
>
> What I want is not to be able to change text content, but no other
> action is disabled. Is this complicated to do?
>
> Thanks.
>
> from Tkinter import *
> root = Tk()
> text = Text(root, font=("Courier"))
> text.pack()
> i='123456789abcdefghijklmnopqrstuvwxyz\n'
> for x in range(30):
>     text.insert(END, i)
> text.config(state=DISABLED)
> mainloop()

You can scroll, but you can't see the cursor. Use

for x in range(30):
    text.insert(END, "%3d " % x + i)

to check.

ED



From beema.shafreen at gmail.com  Tue Oct 16 06:35:10 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Tue, 16 Oct 2007 16:05:10 +0530
Subject: easy but difficult
Message-ID: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>

hi everybody,
  I have  a file  separated by hash:
as shown below,
file:
A#1
B#2
A#2
A#3
B#3

I need the result like this:
A 1#2#3
B 2#3

how will generate the result like this from the above file
can somebody tell me what i have to do......
My code:
          fh =open('abc_file','r')
          for line in fh.readlines():
                   data = line.strip().split('#')
                    for data[0] in line
                            print line

I tried but i donot know how to create 1#2#3 in a single line
regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/79b991c6/attachment.html>

From deets at nospam.web.de  Tue Oct  9 06:12:20 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 12:12:20 +0200
Subject: how to get rgbdata
References: <1191907137.432286.325710@o3g2000hsb.googlegroups.com>
Message-ID: <5n12g4Ffhe3hU1@mid.uni-berlin.de>

 sajanjoseph at gmail.com wrote:

> Hi i am a newbie to python and PIL. can anyone tell me how to get
> rgbdata from a jpeg image using PIL
> as a double[] . is there an equiv method to java's
> BufferedImage.getRGB(0,0,width,height,rgbdata,0,width) ?

The docs of PIL are quite good. And there you find the method

Image.getdata()

that does what you want. At least in a way, as it returns a slightly
different format (tuples of ints istead of floats), but I presume you can
convert that by yourself.

http://www.pythonware.com/library/pil/handbook/image.htm


Diez


From gagsl-py2 at yahoo.com.ar  Wed Oct  3 04:06:38 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 05:06:38 -0300
Subject: Python and SSL
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
Message-ID: <op.tzl3hcd7x6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 03 Oct 2007 04:32:04 -0300, Johny <python at hope.cz> escribi?:

> MyPythonProgram --->Proxy---->Server
> The  proxy is written in Java. I want to use that proxy to see what my
> Python program sends to server.
> The proxy uses its own certificate and this certificate must be
> trusted, I think, otherwise I receive an error.
>
> If I use
> InternetBrowser --->Proxy---->Server
>
> browser asks me if the Proxy's certificate is trusted.If I reply  YES,
> than communication continues( I think browser adds this certificate
> among trusted ones)

Which OS?
Windows itself manages certificate storage. Control Panel, Internet  
Options, Contents, Certificates. You can import your certificate there.

-- 
Gabriel Genellina



From mishok13 at gmail.com  Mon Oct  8 06:21:52 2007
From: mishok13 at gmail.com (Andrii V. Mishkovskyi)
Date: Mon, 8 Oct 2007 14:21:52 +0400
Subject: Off Topic: Gmail hates newsgroups!!!
In-Reply-To: <496954360710041211x696ebebdj3105e4271372c332@mail.gmail.com>
References: <496954360710041211x696ebebdj3105e4271372c332@mail.gmail.com>
Message-ID: <192840a00710080321s220fa35aqc59737710ecb32aa@mail.gmail.com>

2007/10/4, Robert Dailey <rcdailey at gmail.com>:
> I don't know how many other people subscribe to the python mailing list and
> use the mailing list using the web-based interface for Gmail, but I do. I
> use it mainly because Gmail doesn't support IMAP and I use my email from
> multiple locations. Gmail web based works fine except that it starts your
> caret off BEFORE the reply instead of AFTER it. They don't even have an
> option to change this either. I'm just ranting this because it upsets me :)
>
> If anyone might know of a firefox plugin or something to fix this I'd be
> more than willing to use it. I've looked a bit myself for such an extension
> and I've been unsuccessful in finding one.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
JFGI

If you are using Firefox use this Greasemonkey script:
http://userscripts.org/scripts/show/8041
or this extension:
https://addons.mozilla.org/en-US/firefox/addon/4866

-- 
Wbr, Andrii Mishkovskyi.

He's got a heart of a little child, and he keeps it in a jar on his desk.


From fperez.net at gmail.com  Sat Oct 13 00:10:06 2007
From: fperez.net at gmail.com (Fernando Perez)
Date: Fri, 12 Oct 2007 22:10:06 -0600
Subject: Yet another comparison of Python Web Frameworks
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
	<fepf58$439$1@sea.gmane.org>
	<2CEA8691-12EC-4E63-B13E-B923E6CDD54F@cti.depaul.edu>
Message-ID: <fepget$5at$1@sea.gmane.org>

Massimo Di Pierro wrote:

> happy to hear that.
> you may want take a loot at http://mdp.cti.depaul.edu/vqcd
> It is mostly python stuff and will post the code soon.

Ah, memories :)  I'm not working on QCD anymore, but I did write a bunch of
code a while back to script Mayavi (the old one, not the new Mayavi2) to
auto-generate webpages slicing through topological charge configurations,
looking for instanton molecules.  Your images are a bit small for me to
tell what toolkit you're using (Mayavi is VTK based), but if you want, I'd
be happy to send you that old code.  It probably won't do anything you
don't already have, but it was handy.  It would slice in any direction
(typically t) and generate one PNG per value, with the remaining 3
variables displayed, and isosurfaces computed at 1/4 and 3/4s of the total
distribution of values, to conveniently see the instanton/anti-instanton
pairs.

By spitting out one webpage per field configuration, I could let it run
overnight and then the next day quickly have an overview of all the
configurations I had (or show them to my advisor).

The code was written to read the MILC v5 binary lattice formats, which is
what I was using.

Just drop me a line if you happen to want any of that code.

Cheers,

f





From bj_666 at gmx.net  Thu Oct 11 02:53:11 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 06:53:11 GMT
Subject: "".join(string_generator()) fails to be magic
References: <mailman.71.1192084784.927.python-list@python.org>
Message-ID: <5n5vinFghr61U1@mid.uni-berlin.de>

On Thu, 11 Oct 2007 01:26:04 -0500, Matt Mackal wrote:

> I have an application that occassionally is called upon to process
> strings that are a substantial portion of the size of memory. For
> various reasons, the resultant strings must fit completely in RAM.
> Occassionally, I need to join some large strings to build some even
> larger strings.
> 
> Unfortunately, there's no good way of doing this without using 2x the
> amount of memory as the result. You can get most of the way there with
> things like cStringIO or mmap objects, but when you want to actually
> get the result as a Python string, you run into the copy again.
> 
> Thus, it would be nice if there was a way to join the output of a
> string generator so that I didn't need to keep the partial strings in
> memory. <subject> would be the obvious way to do this, but it of
> course converts the generator output to a list first.

Even if `str.join()` would not convert the generator into a list first,
you would have overallocation.  You don't know the final string size
beforehand so intermediate strings must get moved around in memory while
concatenating.  Worst case: all but the last string are already
concatenated and the last one does not fit into the allocated memory
anymore, so there is new memory allocates that can hold both strings ->
double amount of memory needed.

Ciao,
	Marc 'BlackJack' Rintsch


From bj_666 at gmx.net  Fri Oct 12 16:43:43 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 12 Oct 2007 20:43:43 GMT
Subject: raw_input() and utf-8 formatted chars
References: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
	<1192216685.923198.279040@v29g2000prd.googlegroups.com>
	<1192220315.602812.155810@z24g2000prh.googlegroups.com>
Message-ID: <5na4jvFh28v6U2@mid.uni-berlin.de>

On Fri, 12 Oct 2007 13:18:35 -0700, 7stud wrote:

> On Oct 12, 1:18 pm, kyoso... at gmail.com wrote:
>> On Oct 12, 1:53 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
>>
>> > s = 'A\xcc\x88'   #capital A with umlaut
>> > print s           #displays capital A with umlaut
>>
>> > s = raw_input('Enter: ')   #A\xcc\x88
>> > print s                    #displays A\xcc\x88
>>
>> > print len(input)           #9
>>
>> > It looks like every character of the string I enter in utf-8 is being
>> > interpreted literally as 9 separate characters rather than one
>> > character.  How do I enter a capital A with an umlaut so that python
>> > treats it as one character?
>>
>> I don't know. This works for me:
>>
>>
>>
>> >>> x = raw_input('Enter: ')
>> Enter: 
>> >>> len(x)
>> 1
>>
>> I'm using Python 2.4 with Default Source Encoding set to None on
>> Windows XP SP2.
>>
>> Mike
> 
> Yeah, but what happens when you enter A\xcc\x88?

You mean literally!?  Then of course I get A\xcc\x88 because that's what I
entered.  In string literals in source code the backslash has a special
meaning but `raw_input()` does not "interpret" the input in any way.

> And what is it that your keyboard enters to produce an 'a' with an umlaut?

*I* just hit the ? key.  The one right next to the ? key.  ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From rjack at com  Wed Oct  3 20:34:31 2007
From: rjack at com (rjack)
Date: Wed, 03 Oct 2007 20:34:31 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <47041303$0$13930$fa0fcedb@news.zen.co.uk>
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<47041303$0$13930$fa0fcedb@news.zen.co.uk>
Message-ID: <VtWdnWBKe9ZMqJnanZ2dnUVZ_uqvnZ2d@insightbb.com>


 >Tell me, do you know what "hyperbole" means?

Betcha' Ludwig Wittgenstein coulda' told ya'!



From bedouglas at earthlink.net  Thu Oct 25 17:45:51 2007
From: bedouglas at earthlink.net (sam)
Date: Thu, 25 Oct 2007 14:45:51 -0700
Subject: Dual Python Installed Environments..
Message-ID: <052901c81750$6b7f8180$0301a8c0@tmesa.com>

Hi..

I'm looking to install dual versions of python 2.3, 2.4 on the same box. I'm
trying to figure out if there's something I'm missing, some kind of gotchas
that I haven't seen.

I'm also trying to figure out how to allow my script to determine which
version to use???

Thanks





From deets at nospam.web.de  Mon Oct  8 12:22:04 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 18:22:04 +0200
Subject: Really basic problem
References: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
	<1191860096.135308.80740@19g2000hsx.googlegroups.com>
Message-ID: <5mv3pcFfh3udU2@mid.uni-berlin.de>

Zentrader wrote:

> You can use Python's decimal class if floating point arithmetic is not
> exact enough

This is a misleading statement. While it's true that decimal can be more
precise in the sense that smaller fractions are representable, the
underlying problem of certain values not being representable properly &
leading to rounding errors still exists:



>>> import decimal
>>> d = decimal.Decimal
>>> d("1") / d("3")
Decimal("0.3333333333333333333333333333")
>>> otrd = d("1") / d("3")
>>> otrd * 3
Decimal("0.9999999999999999999999999999")
>>> otrd * d("3")
Decimal("0.9999999999999999999999999999")
>>>


Diez


From arserlom at gmail.com  Mon Oct 29 11:46:41 2007
From: arserlom at gmail.com (Armando Serrano Lombillo)
Date: Mon, 29 Oct 2007 08:46:41 -0700
Subject: Built-in functions and keyword arguments
In-Reply-To: <4725ec3a$0$6623$426a74cc@news.free.fr>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
Message-ID: <1193672801.382944.42180@57g2000hsv.googlegroups.com>

On Oct 29, 3:20 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> Armando Serrano Lombillo a ?crit :
>
> > Why does Python give an error when I try to do this:
>
> >>>> len(object=[1,2])
> > Traceback (most recent call last):
> >   File "<pyshell#40>", line 1, in <module>
> >     len(object=[1,2])
> > TypeError: len() takes no keyword arguments
>
> > but not when I use a "normal" function:
>
> >>>> def my_len(object):
> >    return len(object)
>
> >>>> my_len(object=[1,2])
> > 2
>
> In the second case, the name of the argument *is* 'object'. Which is not
> the case for the builtin len (which, fwiw, has type
> 'builtin_function_or_method', not 'function', so inspect.getargspec
> couldn't tell me more).

so that's the point, built-in functions don't behave as normal
functions.

> <ot>
> While we're at it, you should avoid using builtin's names for
> identifiers - here, using 'object' as the arg name shadows the builtin
> 'object' class).
> </ot>

As Duncan points out, I was using the name object because it's what
you get when you type help(len) (or in the calltips, or in). Anyway, I
don't think there's any harm in overriding a builtin name in such a
small scope (the object=[1,2] won't shadow the built-in object outside
of the function).



From jean-francois at ertf.com  Thu Oct  4 09:16:57 2007
From: jean-francois at ertf.com (Jean-Francois Canac)
Date: Thu, 4 Oct 2007 15:16:57 +0200
Subject: Please Help me
Message-ID: <003701c80688$d79738f0$1a02a8c0@ERTF.ERTF.COM>

I am very new in Python and I would like to write an application which takes
records from a COM port (or from a file to replay) and draw a real time
Plot.

 

But I am confused I have looked at Matplotlib, and a little at hippodraw, I
have seen that there are many plot interfaces . But I really don?t know
which I should take for producing plot with data coming from a steam



Please could you help?

 

Many thanks

Jean-Fran?ois 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/2e4d53c6/attachment.html>

From jstroud at mbi.ucla.edu  Tue Oct  2 16:57:00 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 02 Oct 2007 13:57:00 -0700
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <fdub8r$fkb$1@daisy.noc.ucla.edu>

bramble wrote:
> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?

On the OS vendor level, it may not be beating Tkinter. OSX 10.4 comes 
out of the box (no action by the user required to install it) with 
python 2.3.5 + wx 2.5.3.1:

   mbi136-54 25% /usr/bin/python
   Python 2.3.5 (#1, Aug 19 2006, 21:31:42)
   [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
   Type "help", "copyright", "credits" or "license" for more information.
   py> import wx
   py> wx.__version__
   '2.5.3.1'
   py> ^D
   mbi136-54 27% uname -v
   Darwin Kernel Version 8.10.1: Wed May 23 16:33:00 PDT 2007; 
root:xnu-792.22.5~1/RELEASE_I386

Consider also that a similar setup with ubuntu is only an apt-get away. 
And, if you know the proper incantations, is probably just as easy with 
fedora.

Window$ of course...cousucksgh...Excuse me...doesn't get support for 
anything like that from micr$oft, but I think its very easy with enthought.

So in some ways, Tkinter appears to be simply vestigial.

James


From gagsl-py2 at yahoo.com.ar  Tue Oct 30 20:17:57 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 21:17:57 -0300
Subject: Retrieving all open applications ...
References: <3b10c2060710300220g16373e41i6d4290563c15776@mail.gmail.com>
Message-ID: <op.t01cf7pix6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 06:20:10 -0300, Ajay Deshpande  
<garlictrompet at gmail.com> escribi?:

> I need to retrieve all currently open applications using a python  
> program.
> So my output should be a list of window handles. Is there a module which  
> I
> can use?

"applications" or "windows"? You can use the EnumWindows function, from  
the Windows API, to enumerate all  top level windows. See this article  
 from the Microsoft Knowledge Base <http://support.microsoft.com/kb/183009>  
(the example is in VB but I hope you get the idea)

Install the pywin32 extensions from Mark Hammond  
http://pywin32.sourceforge.net and you'll have the EnumWindows function  
available.

-- 
Gabriel Genellina



From python at rcn.com  Sat Oct 27 03:14:48 2007
From: python at rcn.com (Raymond Hettinger)
Date: Sat, 27 Oct 2007 00:14:48 -0700
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
Message-ID: <1193469288.436736.129220@t8g2000prg.googlegroups.com>

On Oct 26, 1:54 am, Lennart Benschop <lenna... at xs4all.nl> wrote:
> My proposal:
> - Any decimal constant suffixed with the letter "D" or "d" will be
>   interpreted as a literal of the Decimal type. This also goes for
>   decimal constants with exponential notation.

There's nothing new here that hasn't already been proposed and
discussed on python-dev.  There were no major objections to the idea;
however, it will need to wait until there is a good C implementation
of the decimal module (which is in the works but coming along very,
very slowly).  Also, once we have a C coded decimal object, further
work would be needed to make it integrate well with the rest of the
language (i.e. making sure that everything allows numeric inputs can
handle a decimal object as a possible input).

FWIW, using the decimal module is not at all as onerous as the OP
makes it sound.  I write:

   from decimal import Decimal as D
   print D(1) / D(7) + D('0.123456')

That isn't much of a burden compared with:

    print 1d / 7d + 0.123456d

You would still need to import decimal so you can set the context
parameters (like precision and rounding).

Also, most non-toy scripts have *very* few literals in them; instead,
the decimal values arise from calculations, user inputs, and file of
data.  Casting those to the correct type is really no more difficult
that it is with other types:

  s = raw_input('Input temperature')
  print int(s), Decimal(s), float(s)

Raymond




From brianshine at mac.com  Sat Oct 20 13:10:38 2007
From: brianshine at mac.com (Brian Shine)
Date: Sat, 20 Oct 2007 10:10:38 -0700
Subject: cgi scripts in Mac OS X
Message-ID: <8BEF967A-9935-4C52-82D0-99051EA9895B@mac.com>

I'm trying to get cgi scripts to work.  I can link to the python  
script, but instead of running and producing an output, it prints the  
script on the page.  I've obviously missed a step in setting it up,  
but I can't see what it is.

Thanks in advance,
Brian Shine


From stoyan.shopov at lisasoft.com  Wed Oct 17 00:22:38 2007
From: stoyan.shopov at lisasoft.com (stoyan)
Date: Tue, 16 Oct 2007 21:22:38 -0700 (PDT)
Subject: Problem with proxies
In-Reply-To: <1192524753.7180.6.camel@ameet>
References: <1192524753.7180.6.camel@ameet>
Message-ID: <13246881.post@talk.nabble.com>


import urllib2
proxy_support = urllib2.ProxyHandler({'http' :
'username:password at proxyserver:port'})
opener=urllib2.build_opener(proxy_support)
urllib2.install_opener(opener)
print urllib2.urlopen('http://www.python.org').read()

Hi, the above works for me. The hardest part is getting the proxy handler
values right. 

Cheers, 
Stoyan. 
-- 
View this message in context: http://www.nabble.com/Problem-with-proxies-tf4634878.html#a13246881
Sent from the Python - python-list mailing list archive at Nabble.com.



From alexandre.badez at gmail.com  Wed Oct 24 09:09:28 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Wed, 24 Oct 2007 15:09:28 +0200
Subject: Better writing in python
In-Reply-To: <20071024124452.GA2936@sdf.lonestar.org>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<20071024124452.GA2936@sdf.lonestar.org>
Message-ID: <20f595e90710240609j6a1cf4c2jd983ff93282ebe68@mail.gmail.com>

On 10/24/07, J. Clifford Dyer <jcd at sdf.lonestar.org> wrote:
>
> On Wed, Oct 24, 2007 at 12:09:40PM -0000, Alexandre Badez wrote regarding
> Better writing in python:
> >
> > lMandatory = []
> > lOptional = []
> > for arg in cls.dArguments:
> >   if arg is True:
> >     lMandatory.append(arg)
> >   else:
> >     lOptional.append(arg)
> > return (lMandatory, lOptional)
> >
> > I think there is a better way, but I can't see how...
> >
>
> I assume cls.dArguments is a dict, correct?
>
> `for arg in cls.dArguments` takes each *key* for cls.dArguments and
> assigns it to arg, so the line 'if arg is True' will test the truth value of
> each key.  I assume (you haven't shown the details here) that your dict
> looks like this:
>
> cls.dArguments = { 'a': True, 'b': False, 'c': True, 'd': False, '': True,
> 0: False }
>
> and you want your for loop to do this:
>
> lMandatory == [ 'a', 'c', '' ]
> lOptional == [ 'b', 'd', 0 ]
>
> in fact, since it's testing the truth value of the keys, not the values,
> you will get this:
>
> lMandatory == [ 'a', 'b', 'c', 'd' ]
> lOptional == [ '', 0 ]
>
> In no particular order, of course.
>
> Also, `if x is True:` should be written as `if x:`
>
> Actually, come to think of it, what I said above is false, because the
> string 'a' *is not* the boolean value True, per se: it is *equal to*
> True.  So if you change `if x is True:` to `if x == True:`  then everything
> I said above holds true, including that you should change `if x == True:` to
> `if x:`
>
> As it stands, the only key in your dict that has a snowball's chance in
> key largo of being marked as mandatory is the boolean value True itself.
>
> Cheers,
> Cliff
>

Thanks for your try Cliff, I was very confused :P
More over I made some mistake when I post (to make it easiest).

Here is my real code:

with
dArguments = {
  'argName' : {
    'mandatory' : bool, # True or False
    [...], # other field we do not care here
  }
}

lMandatory = []
lOptional = []
for arg in cls.dArguments:
  if cls.dArguments[arg]['mandatory']:
    lMandatory.append(arg)
  else:
    lOptional.append(arg)
return (lMandatory, lOptional)

So, as you see, we agree each other about "if bool" or "if bool is True" ;)

So, my question was how to give it a better 'python like' look ?
Any idea ?

-- 
Alex
http://alexandre.badez.googlepages.com/
alexandre.badez at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071024/1c7fac1a/attachment.html>

From mail at microcorp.co.za  Thu Oct  4 03:40:07 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Thu, 4 Oct 2007 09:40:07 +0200
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com><1191300108.593779.318300@y42g2000hsy.googlegroups.com><mailman.1379.1191301581.2658.python-list@python.org><fdsopm$kd6$4@lust.ihug.co.nz><mailman.1404.1191345163.2658.python-list@python.org><fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au> <fe141n$9u8$1@lust.ihug.co.nz>
Message-ID: <017601c8065a$d1c48640$03000080@hendrik>

"Lawrence D'Oliveiro" <ldo at ge...ew_zealand> wote:

> Honestly, why do people react to the word "pointer" as though computers have
> to wear underwear to conceal something shameful going on in their nether
> regions?

I think it is because a pointer is a variable containing as a value the address
of something.

So its a low level concept - useful to low-lifes like C and assembler
programmers, and as
such, capable of causing extreme mayhem in your nicely structured, high level
life.

So it boils down to fear - also known as: "once bitten, twice shy"

:-)    - Hendrik




From gnuist006 at gmail.com  Tue Oct  9 15:20:06 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 19:20:06 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <470b1b30$0$11022$4c368faf@roadrunner.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
Message-ID: <1191957606.187050.272820@v3g2000hsg.googlegroups.com>

On Oct 8, 11:09 pm, "." <f... at bar.biz> wrote:
> On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:

>
> > Can anyone explain:
>
> > (1) its origin
>
> One of the lambda papers, I think.  I don't remember which.

Hey no-name "dot" you are the only one who says its origin is in
one of the old lambda papers. Give me a reference or someone
give me a reference. I dont have access to any ACM journals or
other conferences. So

step 1
reference and the idea in it

step 2
if you can upload it

This is for historical and conceptual development at the same
time as learning the ideas to use them.

Thanks a lot.




From ptmcg at austin.rr.com  Fri Oct  5 09:43:17 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Fri, 05 Oct 2007 06:43:17 -0700
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <Xns99C08FBF59089apc@10.15.188.42>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<Xns99C08FBF59089apc@10.15.188.42>
Message-ID: <1191591797.206824.301220@o3g2000hsb.googlegroups.com>

On Oct 5, 7:52 am, "Adrian Cherry" <ache... at btinternet.com> wrote:
> Steve Holden <st... at holdenweb.com> wrote innews:mailman.1576.1191584716.2658.python-list at python.org:
>
> > I've just been told by the editors at Python Magazine that
> > the first issue is out. It's all-electronic so anyone can
> > download and read it. Let them know what you think:
>
> >    http://www.pythonmagazine.com/c/issue/2007/10
>
> > regards
> >   Steve
>
> Thanks for that, initial impression looks good, I peruse it later
> when the boss isn't watching. Unfortunately there seems to be a
> few horror pictures crept in on page 4!.
>
> One initial comment is the end of the magazine. It just seems to
> stop abruptly. No back page commentry, cartoon or teaser for the
> next issue.
>
> Regards
>
> Adrian

I thought Steve Holden's Random Hits column was the "back page
commentry".  Maybe this column needs to start on the last page, and
continue on the previous one, so that it qualifies as truly "back
page".

Nice launch, good luck PyMag!

-- Paul



From epost2 at gmail.com  Mon Oct  8 09:27:04 2007
From: epost2 at gmail.com (Bruce)
Date: Mon, 08 Oct 2007 06:27:04 -0700
Subject: changes on disk not visible to script ?
Message-ID: <1191850024.006823.101610@r29g2000hsg.googlegroups.com>

Hi,
I am trying to have my script automate a task, by using os.system, but
I cant get it to work.

manually, outside the script I can do this thing by

C:\echo argument_file | the_program

This works very well when argument_file is created before my script is
started

In the script I try to do it like this:
f = open("argument_file",'w')
f.write(argument)
f.close()
cmd = "echo %s | %s"%(argument_file,the_program)
os.system(cmd)

The script works if the argument_file is already in the directory
before os.system(cmd), but the script must create argument_file before
using os.system. Problem is the_program cannot find argument_file or
the_program cannot find anything inside argument_file.

The python script cannot see changes on disk. In the "My computer"
window, if I do a refresh, I can see the argument_file is created
during the script. I have also tried delays with time.sleep right
after creating the file, but still no success.

Is there some way to around this? must use windows I`m afraid.



From dstromberglists at gmail.com  Fri Oct 12 14:55:43 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Fri, 12 Oct 2007 11:55:43 -0700
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
	<470f2522$0$12106$426a74cc@news.free.fr>
Message-ID: <pan.2007.10.12.18.55.42.630018@gmail.com>

On Fri, 12 Oct 2007 09:42:28 +0200, Bruno Desthuilliers wrote:

>>> So what?  Otherwise you carry *always* the baggage of a public
>>> property and a private attribute whether you need this or not.  At
>>> least for me it would be unnecessary in most cases.
>> 
>> That "baggage" of carrying around "unneeded" methods is something the
>> computer carries for you - IE, no big deal in 99.99% of all cases.
> 
> 1/ Accessing the value of a property is not free. Accessing a plain
> attribute is much cheaper.

Python's current performance characteristics have no bearing on what is
good software engineering practice in general, and little bearing on what
is good software engineering practice in python.  Even from a
strictly "what's good for python" perspective, if we limit our view of
"good SE practice" to what python can express well right now (and IMO,
python can express this fine, but you seem to be arguing it cannot),
that needlessly limits python's evolution.

I'm not omniscient, and neither is anyone else; when one initially codes a
class, one doesn't know to what purposes it will need to be bent in the
future; using accessor methods instead of exposed attributes is
significantly more flexible for the future of your class.  In fact, I may
even go so far as to say that public attributes would be good to leave out
of future languages that don't have a lot of backward compatibility
baggage.

It may not be traditional to use accessor methods in python.  It may even
be a more expensive operation.  But neither of these make accessor methods
a bad idea in the abstract.

> 2/ cluttering the class's namespace with useless names and the source
> code with useless code is definitively not a good thing.

Adding two clear and flexible methods and eliminating one clear and
inflexible attribute is not namespace clutter.  It's paydirt.

The performance expense in the vast majority of cases is tiny compared to
the human expense of going back and fixing a design bug if anything
significant has been hinging on your exposed implementation detail.

Unless, that is, you don't think your code is important enough to be
stretched to another, previously unforeseen purpose someday.  If you're
coding for a hobby, and enjoy coding for the sake of coding irrespective
of how long it takes, rather than as a means to a valuable end, maybe
needlessly exposing attributes is a Really Good Idea.

My implementation may or may not be lacking (feel free to improve it - in
fact, please do!), but that's irrelevant to the heart of the matter, which
is "what you didn't think to plan for now most definitely can hurt you
later".

If you have a program that needs to perform well, you're much better off
coding your classes the best way you know how from a Software Engineering
perspective, and using pysco or shedskin or pypy or similar to
improve performance.  If that's not enough, then you're better off
profiling the program, and only after that should you recode the critical
portions into something like pyrex or a C extension module, or -maybe-
some python "tricks".  I'd argue that trick-free C or C++ is normally
better than python with tricks from a performance vantage -and- from an SE
viewpoint.

Little hackish tricks for performance's sake scattered throughout a
program are very wasteful of something more precious than CPU time.




From bignose+hates-spam at benfinney.id.au  Thu Oct 11 22:28:30 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 12 Oct 2007 12:28:30 +1000
Subject: EasyMock for python ?
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
Message-ID: <87ve9d9icx.fsf@benfinney.id.au>

BlueBird <phil at freehackers.org> writes:

> Does anybody know where to find a library like EasyMock for python ?

I've had good results with Ian Bicking's 'minimock.py'
<URL:http://blog.ianbicking.org/minimock.html>. It uses the existing
'doctest' functionality for its output, and a minimock.Mock will mock
*everything* (using further Mock instances for attributes and methods)
unless explicitly told otherwise.

This means that the Mock object automatically supports any number of
attributes and methods by any reasonable names; the only setup needed
beyond creating the instance is to seed it with anything you *don't*
want returned as a Mock.

-- 
 \           "Laugh and the world laughs with you; snore and you sleep |
  `\                                             alone."  -- Anonymous |
_o__)                                                                  |
Ben Finney


From vinay_sajip at yahoo.co.uk  Fri Oct 19 07:22:33 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Fri, 19 Oct 2007 04:22:33 -0700
Subject: python logging module and custom handler specified in config file
In-Reply-To: <mailman.206.1192791886.13605.python-list@python.org>
References: <mailman.21.1192458649.13605.python-list@python.org>
	<1192728419.133020.133590@q5g2000prf.googlegroups.com>
	<mailman.206.1192791886.13605.python-list@python.org>
Message-ID: <1192792953.675522.225300@y27g2000pre.googlegroups.com>

On 19 Oct, 12:04, Frank Aune <Frank.A... at broadpark.no> wrote:
> On Thursday 18 October 2007 19:26:59 Vinay Sajip wrote:
>
> What if you want to datestamp filenames for filehandlers, say with todays date
> for example?
>
> [handler_file]
> class=FileHandler
> level=NOTSET
> formatter=normal
> args=('filename.log', 'w')
>
> Say you want filenames to be on format filename-YYYYMMDD.log
>

You can use ConfigParser interpolation. See this post by Gabriel
Genellina:

http://groups.google.co.uk/group/comp.lang.python/tree/browse_frm/thread/5a7bc2892a2875b4/337b080d0522e555?rnum=1&q=logging&_done=%2Fgroup%2Fcomp.lang.python%2Fbrowse_frm%2Fthread%2F5a7bc2892a2875b4%2Ff42cca545d8b339c%3Flnk%3Dgst%26q%3Dlogging%26#doc_f42cca545d8b339c

Regards,


Vinay



From bignose+hates-spam at benfinney.id.au  Mon Oct  1 03:56:39 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 01 Oct 2007 17:56:39 +1000
Subject: Function return a dictionary
References: <mailman.1329.1191224914.2658.python-list@python.org>
Message-ID: <87lkanxo7c.fsf@benfinney.id.au>

Boris Mok <borismok at iwow.com.sg> writes:

> I'm doing a function which needs return an arrary -- or more specially
> a dictionary data type.

Yes. Python doesn't have an "array" type natively, and it's confusing
to refer to a dict as an array because there *are* "array"s in PyNum.

> I have a sample like this
> 
> def AFC():
>  v["a"] = 1
>  return v

Your function never specifies where 'v' comes from. So, when you first
attempt to access an item from 'v' as an existing dict, you get a
NameError.

If you want to create 'v' inside the function, you'll need to do so
before attempting to use it.

    def foo():
        bar = {"spam": 1}
        return bar

    cheeseburger = foo()
    print cheeseburger["spam"]

To get a thorough grounding in basic concepts like this, please work
through the Python tutorial <URL:http://docs.python.org/tut/>, from
beginning to end, running every example and experimenting until you
understand why it does what it does, before moving onto the next.

-- 
 \     "[T]he question of whether machines can think [...] is about as |
  `\         relevant as the question of whether submarines can swim." |
_o__)                                            ?Edsger W. Dijkstra |
Ben Finney


From krishna.ggk at gmail.com  Sun Oct 28 14:39:07 2007
From: krishna.ggk at gmail.com (gopala)
Date: Sun, 28 Oct 2007 18:39:07 -0000
Subject: Capturing output with input
Message-ID: <1193596747.543020.78280@e34g2000pro.googlegroups.com>

Hi, I am pretty new to python but i do have experience with c++. As a
part of learning exercise i wrote a python script to insert
beautifying comments(with name, problem...) to our lab program source
files (c language).

The script is working for most of the cases. The problem is i also
need to append the test output of the lab programs to the
corresponding source files(again the output should be added as a
beautified comment). The lab programs are interactive and very
different from each other. Currently in the script, i am prompting the
user(me!) to manually enter the output of the program which it to be
inserted. I want to eliminate this tedious step.

for eg i want "python commenter.py lab1.c" to initially prepend
comments with my name... and then spawn lab1.exe , capture its output
and append it with comments to lab1_com.c

My initial attempts of using spawn.. , exec.. pipe.. failed since they
can't capture the std input and std output continuously.
The lab1.exe will be something like

Enter 2 nos
2 3
The sum is 5

Now i should be able to capture all these.
Is this possible ? If so please do give me some hints on how to
achieve this.

Cheers,
Gopala Krishna



From mal at egenix.com  Mon Oct 15 12:03:46 2007
From: mal at egenix.com (M.-A. Lemburg)
Date: Mon, 15 Oct 2007 18:03:46 +0200
Subject: A Python way to get MS Access table column information?
In-Reply-To: <1192461377.629580.287370@i38g2000prf.googlegroups.com>
References: <1192461377.629580.287370@i38g2000prf.googlegroups.com>
Message-ID: <47138F62.4090201@egenix.com>

On 2007-10-15 17:16, goldtech wrote:
> Using Python and OBDC in MS-Access DBs. So, I'm able to run SQL
> statements from Python on an Access DB.
> 
> Is there an SQL statement that will give me column information? For a
> table I want to know the data type and of course colum/Attribute name
> for each column.
> 
> So far the answer has been "no". VB or some other tool is needed to do
> that I'm told.
> 
> Using just Python and OBDC is there a way? Maybe Win32com?

Here's a quick example:

# Table that you're interested in:
tablename ='MyTable'

# Load mxODBC
import mx.ODBC.Windows

# Open the connection
database = mx.ODBC.Windows.DriverConnect(
    'DSN=<password>;'
    'UID=<username>;'
    'PWD=<username>')

# Create a cursor to execute statements on
cursor = database.cursor()

# Issue a dummy statement that won't return anything,
# but will setup the cursor.description attribute
cursor.execute('select * from %s where 1=0' % tablename)

# Print a list of column names:
print 'Found these columns:'
for columndef in cursor.description:
    print '  ', columndef[0]

For more information on the format of cursor.description,
see the DB-API 2.0 spec:

http://www.python.org/dev/peps/pep-0249/

of the mxODBC manual:

http://www.egenix.com/products/python/mxODBC/#Documentation

If you need even more meta-information about the columns
or the schema in general, have a look at the catalog methods
which are available in mxODBC, e.g. cursor.columns().

-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Services directly from the Source  (#1, Oct 15 2007)
>>> Python/Zope Consulting and Support ...        http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ...             http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
________________________________________________________________________

:::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! ::::


   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611


From duncan.booth at invalid.invalid  Tue Oct  2 13:32:02 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 2 Oct 2007 17:32:02 GMT
Subject: access __doc__ from within function without reference to function
	name
References: <Xns99BDA81BBC0CDduncanbooth@127.0.0.1>
	<mailman.1403.1191343982.2658.python-list@python.org>
Message-ID: <Xns99BDBC7A6D0E0duncanbooth@127.0.0.1>

Tim Chase <python.list at tim.thechases.com> wrote:

> The parser also has to accomodate "raw" and "unicode" string 
> prefixes, as they're valid too:
> 
>    def f(x):
>      r"raw!"
>      pass
> 
>    def f(x):
>      u"Unicode"
>      pass
> 
> 
> in addition. Okay...in most of these cases, the pathological 
> coder should be taken out back and beaten, but it's a non-trivial 
> problem :)

Fortunately someone already wrote a parser for Python code, so it is pretty 
trivial:

>>> import compiler
>>> class Visitor(compiler.visitor.ASTVisitor):
	def visitFunction(self, node):
		print node.doc

>>> def showdoc(source):
	compiler.walk(compiler.parse(source), Visitor())

	
>>> showdoc(r'''def f(x):
     """this is a \"""docstring\"""
     with \\\"""and\""" mutliple lines"""
     pass
''')
this is a """docstring"""
     with \"""and""" mutliple lines
>>> showdoc(r'''def f(x):
     u"Unicode" " with concatenation"
     pass
''')
Unicode with concatenation
>>> 


From nagle at animats.com  Mon Oct  1 23:31:51 2007
From: nagle at animats.com (John Nagle)
Date: Tue, 02 Oct 2007 03:31:51 GMT
Subject: Why doesn't Python's "robotparser" like Wikipedia's "robots.txt" file?
Message-ID: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>

    For some reason, Python's parser for "robots.txt" files
doesn't like Wikipedia's "robots.txt" file:

 >>> import robotparser
 >>> url = 'http://wikipedia.org/robots.txt'
 >>> chk = robotparser.RobotFileParser()
 >>> chk.set_url(url)
 >>> chk.read()
 >>> testurl = 'http://wikipedia.org'
 >>> chk.can_fetch('Mozilla', testurl)
False
 >>>

    The Wikipedia robots.txt file passes robots.txt validation,
and it doesn't disallow unknown browsers.  But the Python
parser doesn't see it that way.  No matter what user agent or URL is
specified; for that robots.txt file, the only answer is "False".
It's failing in Python 2.4 on Windows and 2.5 on Fedora Core.

    I use "robotparser" on lots of other robots.txt files, and it
normally works.  It even used to work on Wikipedia's older file.
But there's something in there now that robotparser doesn't like.
Any ideas?

				John Nagle


From jeffober at gmail.com  Fri Oct 19 23:40:36 2007
From: jeffober at gmail.com (Jeff)
Date: Sat, 20 Oct 2007 03:40:36 -0000
Subject: __main__ : What is this?
In-Reply-To: <mailman.240.1192847158.13605.python-list@python.org>
References: <mailman.234.1192836549.13605.python-list@python.org>
	<1192839982.488484.102860@e34g2000pro.googlegroups.com>
	<mailman.240.1192847158.13605.python-list@python.org>
Message-ID: <1192851636.423205.299920@i13g2000prf.googlegroups.com>

A common pattern is to put test code in the block there, too, for
modules.

Re comparison ordering, perhaps it's as in PHP, where string literals
should always go before a variable in a comparison in case evaluating
the variable causes an error :)

Mas, ese orden nunca uso yo ;).

On Oct 19, 10:25 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Fri, 19 Oct 2007 21:26:22 -0300, Matimus <mccre... at gmail.com> escribi?:
>
> > The common pattern:
>
> > if __name__ == "__main__":
> >   # do stuff
>
> > IMHO better written:
>
> > if "__main__" == __name__:
> >     # do stuff
>
> I'm intrigued why do you feel the second alternative is better.
> Which is your native language? In English (and Spanish, and many others  
> but still not in the majority) the usual ordering is "subject-verb-object"  
> or SVO, which matches the first alternative: "If the name is __main__, do  
> this..."
> As all the languages I know (not so many!) are SVO, I can't think of any  
> equivalent of the second form [that I could say it's better than the first]
>
> --
> Gabriel Genellina




From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 12:09:45 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 16 Oct 2007 18:09:45 +0200
Subject: easy but difficult
In-Reply-To: <1192537926.685336.36090@z24g2000prh.googlegroups.com>
References: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
	<mailman.57.1192532023.13605.python-list@python.org>
	<1192537926.685336.36090@z24g2000prh.googlegroups.com>
Message-ID: <4714e281$0$31446$426a74cc@news.free.fr>

Paul McGuire a ?crit :
> On Oct 16, 5:46 am, "Amit Khemka" <khemkaa... at gmail.com> wrote:
> 
(snip)
> Another technique that helps improve script readability is to assign
> the results of the split into separate variables, instead of just a
> list.  This way you can refer to the items with meaningful names
> instead of less readable index-into-the-list references:
> 
> for line in open('abc_file'):
>    datakey,datavalue = line.strip().split('#')
>    # add the numbers to the 'alphabet' key as a list
>    d[datakey] = d.get(datakey, []) + [datavalue]

And then use dict.setdefault and list.append:
   d.setdefault(datakey, []).append(datavalue)




From marcpp at gmail.com  Thu Oct 11 19:44:50 2007
From: marcpp at gmail.com (marc)
Date: Fri, 12 Oct 2007 01:44:50 +0200
Subject: Diferent files: GUI (wxpython) Program
References: <fem5g9$mia$1@aioe.org>
	<1192145293.118368.214950@k35g2000prh.googlegroups.com>
Message-ID: <470EB572.6080509@gmail.com>

cmpython at gmail.com escribi?:
> On Oct 11, 5:44 pm, marc <mar... at gmail.com> wrote:
>> Hi why I can call an .py GUI (wxpython) from a program and control it?
>> I'm newbie in python.
> 
> Sorry, could you restate that?  Explain again what you want to do.
> 

I would to call a python file that contains a GUI (with wx) from a file 
program.
The programs that I've do, contains a GUI and the code to run it in the 
same file, but I when need to modify a GUI file (I use wxglade) I need 
to delete all code lines (except the GUI code lines) and it difficult 
the program.


From jgodoy at gmail.com  Sat Oct  6 07:15:34 2007
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 06 Oct 2007 08:15:34 -0300
Subject: Yet another comparison of Python Web Frameworks
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<mailman.1608.1191668817.2658.python-list@python.org>
Message-ID: <6b7kt4-v7q.ln1@strongwill.g2ctech>

Tim Chase wrote:
 
> Any respectable comparison of Python web frameworks should
> include evaluation of at least Django and TG.  Or at least give
> good reason why the comparison excludes them.

When he said that he didn't want anything complex neither anything that used
a templating system, I thought this had already excluded a lot of
frameworks, including TG and Django.

> Zope is also missing, but I'm not sure Zope qualifies so much as
> a framework, but as an answer to the question "If Emacs were a
> Python web environment, what would it look like?"

He already had dislikings with Plone that weren't clear, maybe a lot of
those are Zope related...


I agree, though, that more time could be spent explaining "why" things were
discarded / ignored.


From exarkun at divmod.com  Wed Oct 10 06:54:23 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 10 Oct 2007 06:54:23 -0400
Subject: unpickle from URL problem
In-Reply-To: <vSZOi.5979$rD1.4849@trnddc01>
Message-ID: <20071010105423.8162.458155511.divmod.quotient.20893@ohm>

On Wed, 10 Oct 2007 05:58:51 GMT, Alan Isaac <aisaac at american.edu> wrote:
>I am on a Windows box.
>
>I pickle a tuple of 2 simple objects with the pickle module.
>It pickles fine.  It unpickles fine.
>
>I upload to a server.
>I try to unpickle from the URL.  No luck.  Try it:
>x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example1'))
>
>I change the filetype to unix.  I upload again.
>I try to unpickle from the URL.  Now it works.  Try it:
>x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example2'))
>
>Why the difference?

You shouldn't unpickle things you get from the network, since pickle can
execute arbitrary code: http://jcalderone.livejournal.com/15864.html

Jean-Paul


From byte8bits at gmail.com  Tue Oct  2 17:06:39 2007
From: byte8bits at gmail.com (brad)
Date: Tue, 02 Oct 2007 17:06:39 -0400
Subject: List Question
Message-ID: <fdubt1$gp$1@solaris.cc.vt.edu>

How is this expressed in Python?

If x is in y more than three times:
     print x

y is a Python list.


From rowen at cesmail.net  Tue Oct 16 14:20:32 2007
From: rowen at cesmail.net (Russell E. Owen)
Date: Tue, 16 Oct 2007 11:20:32 -0700
Subject: Build Python 2.5 against Tk 8.5
References: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>
	<4714D34C.4050603@v.loewis.de> <4714D4AB.3080103@codebykevin.com>
Message-ID: <rowen-A96536.11203216102007@news.u.washington.edu>

In article <4714D4AB.3080103 at codebykevin.com>,
 Kevin Walzer <kw at codebykevin.com> wrote:

> Martin v. L?wis wrote:
> >> I'd like to experiment with Tk 8.5 (now in beta) in my Python
> >> application, but Python 2.5 requires Tk 8.4.x.
> > 
> > Why do you say that? AFAIK, that's not the case.
> 
> It's been a while, but when I've tried to run my Tkinter app against Tk 
> 8.5 with a stock Python installation, I get an error message saying that 
> Tk 8.4.x is required. It's probably tkinter.so that hard-codes the 
> Tcl/Tk version, not Python itself--I should have been clearer on that. 
> However, I still need to know what to patch...

I have no idea how Tkinter does with Tcl/Tk 8.5.

But one way to try it is to build python from source (after installing 
Tcl/Tk 8.5). It's not hard, but it takes awhile and you have to specify 
the right options to get a framework build (these are documented in the 
build instructions).

-- Russell


From thorsten at thorstenkampe.de  Mon Oct 15 16:27:00 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Mon, 15 Oct 2007 21:27:00 +0100
Subject: Normalize a polish L
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<MPG.217dbfcba9423866989713@news.individual.de>
	<5nhumqFig4buU1@mid.individual.net>
Message-ID: <MPG.217ddd73cbc55740989714@news.individual.de>

* Bjoern Schliessmann (Mon, 15 Oct 2007 21:51:54 +0200)
> Thorsten Kampe wrote:
> > The 'L' is actually pronounced like the English "w"...
> 
> '?' originally comes from "L" (<http://en.wikipedia.org/wiki/?>) and
> is AFAIK transcribed so. 

There are lots of possible transcriptions for "LATIN CAPITAL LETTER L 
WITH STROKE". Transcription is language dependent so the English and 
German transcriptions of Polish names are different.
 
> Also, a friend of mine writes himself "Lukas" (pronounced L-) even
> though in Polish his name is ?ukas (short Wh-).

Why do you try to use characters in a character set that does not 
contain these characters? That doesn't make any sense.


Thorsten


From enleverlesX.XmcX at XmclaveauX.com  Sat Oct 13 18:28:32 2007
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI (MVP))
Date: Sun, 14 Oct 2007 00:28:32 +0200
Subject: Python in HTML Application (HTA)
In-Reply-To: <47108428$0$25937$ba4acef3@news.orange.fr>
References: <47108428$0$25937$ba4acef3@news.orange.fr>
Message-ID: <471146ca$0$25947$ba4acef3@news.orange.fr>

Hi! 

I give a solution in the french newsgroup.

Michel Claveau





From skip at pobox.com  Sat Oct 27 00:45:04 2007
From: skip at pobox.com (skip at pobox.com)
Date: Fri, 26 Oct 2007 23:45:04 -0500
Subject: resurrected modindex
Message-ID: <18210.49744.191842.622583@montanaro.dyndns.org>

A long time ago I wrote a redirector to note and display the most frequently
requested modules from the library reference manual's global module index.
When Georg Brandl did his massive rewrite of the Python manuals that broke.
I finally took the time this evening to resurrect that function.  The result
is here:

    http://www.webfast.com/modindex/

I reset all the counters and seeded the cache with a few modules.  Click
around in the index a few times then reload the above page.  You'll get the
idea.

Skip



From apt.shansen at gmail.com  Mon Oct 29 12:56:38 2007
From: apt.shansen at gmail.com (Stephen Hansen)
Date: Mon, 29 Oct 2007 09:56:38 -0700
Subject: what version python and wxPython comes with Mac OS X Leopard
In-Reply-To: <1193671895.765873.209930@z9g2000hsf.googlegroups.com>
References: <1193671895.765873.209930@z9g2000hsf.googlegroups.com>
Message-ID: <7a9c25c20710290956i59c46b2t847c617ccb53a321@mail.gmail.com>

Python 2.5.1, and wxPython 2.8.4.0.

On 10/29/07, chewie54 <dfabrizio51 at gmail.com> wrote:
>
> Hello,
>
> Anyone using Leopard know which versions of Python and wxPython and
> any other Python related modules are default with the new OS?
>
> Thanks,
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/242363eb/attachment.html>

From adurdin at gmail.com  Wed Oct 17 08:43:51 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Wed, 17 Oct 2007 13:43:51 +0100
Subject: Automatically organize module imports
In-Reply-To: <20071015191259.8162.2131787714.divmod.quotient.23330@ohm>
References: <ff0css$qjc$1@newsreader2.netcologne.de>
	<20071015191259.8162.2131787714.divmod.quotient.23330@ohm>
Message-ID: <59e9fd3a0710170543j3cd9e1dlb5713c84a68a9ea1@mail.gmail.com>

On 10/15/07, Jean-Paul Calderone <exarkun at divmod.com> wrote:
>
> Pyflakes will tell you which imports aren't being used (among other
> things).  I don't know if an existing tool which will automatically
> rewrite your source, though.

I'll second that recommendation of Pyflakes -- as the interpreter only
lets you know about undefined names when the code is executed, I find
Pyflakes really useful at finding missing imports (or other undefined
names) as soon as possible.

As I'm doing a lot of work with Django at the moment, which requires
some configuration of the environment to run, the fact that Pyflakes
reads the source without trying to execute any of it helps a great
deal.

Andrew.


From seb.haase at gmail.com  Mon Oct  1 09:19:19 2007
From: seb.haase at gmail.com (seb.haase at gmail.com)
Date: Mon, 01 Oct 2007 13:19:19 -0000
Subject: PyOpenGL without SetupTools
In-Reply-To: <1191232167.092377.153010@k79g2000hse.googlegroups.com>
References: <1191225893.485450.325090@50g2000hsm.googlegroups.com>
	<1191232167.092377.153010@k79g2000hse.googlegroups.com>
Message-ID: <1191244759.700398.35870@g4g2000hsf.googlegroups.com>



Are there PyOpenGL 2.0 (I guess 2.0.1.09 is goood)  binaries available
for Python 2.5 ? Anywhere ?

Thanks for the reply

-Sebastian Haase

On Oct 1, 11:49 am, Carl Banks <pavlovevide... at gmail.com> wrote:
> On Oct 1, 4:04 am, seb.ha... at gmail.com wrote:
>
>
>
> > Hi,
> > I am distributing a package with a precompiled collection of modules
> > and packages useful for Python based medical/biological/astronomical
> > image analysis and algorithm development. (Codename: Priithon).
> > For Priithon I put all modules/packages in a simple / single directory
> > (tree) including one starting batch/script file. This script sets up
> > PYTHONPATH to find modules at this place.
> > It works fine for Windows,Linux and Mac-OSX.
>
> > Now I want to upgrade everything to Python 2.5  and thought it might
> > be time get PyOpengl version 3 (aka. pyOpengl-ctypes).
>
> > The problem at hand is now that PyOpenGL  uses "all this setup-tools
> > machinery" just to initialize the formathandlers for the different
> > ways to deal with arrays. (I really need only numpy support !)
> > This is done via the pkg_resources mechanism called "entry_points".
>
> > Can I include a simple non-system-install of pkg_resources that makes
> > at least the entry_point stuff work ?  Where do I put pyOpenGL's
> > "entry_points.txt"  file ?
>
> The simple answer is "don't bother with PyOpenGL-ctypes if you don't
> have to".  Besides the hassles with binary packaging, it's quite a bit
> slower then PyOpenGL 2.0.
>
> Anyways, when I saw that I couldn't easily figure out how to register
> a setuptools package by hand (the point you seem to be at now), I
> resorted to using the same hack that setuptools uses to register its
> packages.  Setuptools puts a pth file, something like
> "ezsetup_XXXX.pth", in the site-packages directory.  The file has a
> couple lines of Python code that mark the start and end of the eggs on
> sys.path; then they call setuptools to postprocess and register the
> eggs.
>
> What I did was to duplicate the effect of these lines in my main
> script.  I don't have it in front of me, but it was something along
> these lines:
>
>     sys.__eggindex = len(sys.path)
>     sys.path.append("OpenGL-cytpes-3.0.0a7-whatever.egg")
>     setuptools.register_packages()
>
> I copied the OpenGL egg to my distro directory, and it worked.
>
> Another possibility is to do it the "setuptools" way: by not packaging
> PyOpenGL 3.0 at all, and instead marking it as a dependency.  Then,
> setuptools will helpfully download it for the user.  (Personally, I
> hate that scripts can recklessly download and install stuff into your
> site packages without even asking; seems like a possible security hole
> as well.)  But it's an option.
>
> Carl Banks




From horpner at yahoo.com  Fri Oct 26 08:22:56 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Fri, 26 Oct 2007 12:22:56 GMT
Subject: about functions question
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
	<1193314722.985517.252220@d55g2000hsg.googlegroups.com>
	<47209ba3$0$4804$426a74cc@news.free.fr>
	<slrnfi1b8f.16s.horpner@FIAD06.norwich.edu>
	<47219101$0$8042$426a74cc@news.free.fr>
Message-ID: <slrnfi3n13.1mk.horpner@FIAD06.norwich.edu>

On 2007-10-26, Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
> Neil Cerutti a ?crit :
>> On 2007-10-25, Bruno Desthuilliers
>> <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
>>> The canonical case for small scripts is to have first all
>>> functions and globals defined, then the main code protected by
>>> a guard, ie:
>> 
>> There's no reason to "protect" your main code in a small
>> script.
>
> I actually have at least one: it allow me to execute all the
> top-level definitions in Emacs' Python sub-interpreter buffer
> for testing, without actually executing the 'main' code.
>
>>> if __name__ == '__main__':
>>>    print SOME_CONST
>>>    if not do_something():
>>>      try_somethin_else()
>> 
>> That idiom is 
>
><insert>also</insert>
>
>> useful in modules for launching tests or examples
>> that should not be run when the module is imported.
>> 
> Indeed.

Thanks to you and Chris for giving me the tool-related
applications of that idiom. I haven't used the associated tools.

-- 
Neil Cerutti
Ushers will eat latecomers. --Church Bulletin Blooper


From horpner at yahoo.com  Sat Oct 27 19:10:42 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Sat, 27 Oct 2007 23:10:42 GMT
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<1193494184.618613.81090@50g2000hsm.googlegroups.com>
	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
	<1193501811.620522.261570@o80g2000hse.googlegroups.com>
	<mailman.514.1193509692.13605.python-list@python.org>
	<5ohjojFmgu6mU7@mid.uni-berlin.de>
Message-ID: <SzPUi.39599$G23.11413@newsreading01.news.tds.net>

On 2007-10-27, Marc 'BlackJack' Rintsch <bj_666 at gmx.net> wrote:
> On Sat, 27 Oct 2007 13:28:02 -0500, Tim Chase wrote:
>
>>>> Even clearer is not to allow octal literals :) Is there *any* use for
>>>> them?
>>> 
>>> The mode argument to os.chmod.
>> 
>> You mean instead of
>> 
>>   import this
>>   os.chmod(filename, os.R_OK | os.W_OK | os.X_OK)
>> 
>> which explicitly (rather than implicitly) spells it out?
>
> And the equivalent of ``os.chmod(filename, 0777)`` looks like what!?

os.chmod(filename, int('777', 8))

It's good enough for most other bases. ;)

-- 
Neil Cerutti


From khemkaamit at gmail.com  Mon Oct 15 02:59:13 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Mon, 15 Oct 2007 12:29:13 +0530
Subject: use lines as argument to a command
In-Reply-To: <1192420069.166779.55230@y27g2000pre.googlegroups.com>
References: <1192420069.166779.55230@y27g2000pre.googlegroups.com>
Message-ID: <1360b7230710142359i3100cd28qc028643705c3d698@mail.gmail.com>

On 10/15/07, Shoryuken <sakradevanamindra at gmail.com> wrote:
> I'm new to Python, so my question may sounds naive. Here is it.
>
> I have a text file like this:
>
> www.a.com
> www.b.com
> www.c.com
> ...
>
> I want to read one line from this file at a time, which I know how to
> do. And use it as an argument to a command, for example, telnet www.a.com
> and so on. However I have no idea how to do this task.

I guess that you want to loop over a file and for each line in the
file you want to call some
external program with the line as the argument.

Have a look at subprocess module
 http://docs.python.org/lib/module-subprocess.html

If there is some else that you meant, please specify .

Cheers,

-- 
--
Amit Khemka


From python.list at tim.thechases.com  Mon Oct 29 19:45:20 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 29 Oct 2007 18:45:20 -0500
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <47267090.70107@tim.thechases.com>

> Is this the best way to test every item in a list?
> 
> def alltrue(f,l):
>     return reduce(bool.__and__,map(f,l))
> 
> def onetrue(f,l):
>     return reduce(bool.__or__,map(f,l))
> 
>>>> alltrue(lambda x:x>1,[1,2,3])
> False
>>>> alltrue(lambda x:x>=1,[1,2,3])
> True

As of Python2.5, there's an any() and all() function built into
the language.

  >>> any(map(lambda x: x>1, [1,2,3]))
  >>> all(map(lambda x: x>1, [1,2,3]))

Implementations for older versions are given at

http://docs.python.org/lib/built-in-funcs.html

You can adjust the "if" test in the example code so that it calls
your function...something like

  def my_any(f, iterable):
    for element in iterable:
      if f(element):
        return True
    return False

  def my_all(f, iterable):
    for element in iterable:
      if not f(element):
        return False
    return True

The advantage of the code in the docs is that it
short-circuits...there's no need to reduce the entire list if an
early item triggers the condition (a "true" early in an "any" or
a "false" early in an "all").

While you can use a reduce(bool.__and__, thing) call, I more
frequently see it as reduce(operator.or_, thing)

Just a few ideas,

-tkc





From bscrivener42 at gmail.com  Tue Oct 30 09:22:04 2007
From: bscrivener42 at gmail.com (BartlebyScrivener)
Date: Tue, 30 Oct 2007 13:22:04 -0000
Subject: python in academics?
In-Reply-To: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
Message-ID: <1193750524.107361.130600@50g2000hsm.googlegroups.com>

On Oct 29, 10:39 pm, sandipm <sandip.m... at gmail.com> wrote:
> seeing posts from students on group. I am curious to know, Do they
> teach python in academic courses in universities?

This came up a while back. See:

http://tinyurl.com/2pjjua

If that doesn't work, search the Google group for "Python taught in
schools"

rd



From steven.bethard at gmail.com  Fri Oct 26 21:47:08 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 26 Oct 2007 19:47:08 -0600
Subject: Iteration for Factorials
In-Reply-To: <1193396435.916666.277770@50g2000hsm.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<7xodeouga8.fsf@ruckus.brouhaha.com>
	<1193396435.916666.277770@50g2000hsm.googlegroups.com>
Message-ID: <5oKdncgTz5YBBb_anZ2dnUVZ_obinZ2d@comcast.com>

Nicko wrote:
> If you don't like the rounding errors you could try:
> 
>     def fact(n):
>         d = {"p":1L}
>         def f(i): d["p"] *= i
>         map(f, range(1,n+1))
>         return d["p"]
> 
> It is left as an exercise to the reader as to why this code will not
> work on Py3K

Serves you right for abusing map().  ;-)

STeVe


From zentraders at gmail.com  Mon Oct  8 12:14:56 2007
From: zentraders at gmail.com (Zentrader)
Date: Mon, 08 Oct 2007 09:14:56 -0700
Subject: Really basic problem
In-Reply-To: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
References: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
Message-ID: <1191860096.135308.80740@19g2000hsx.googlegroups.com>

You can use Python's decimal class if floating point arithmetic is not
exact enough

import decimal
status = decimal.Decimal( 0 )
for i in range(10):
   status += decimal.Decimal( "0.1" )
   if status == decimal.Decimal( "0.1" ):
       print status
   elif status == decimal.Decimal( "0.2" ):
       print status
   elif status == decimal.Decimal( "0.3" ):
       print status
   elif status == decimal.Decimal( "0.4" ):
       print status
   elif status == decimal.Decimal( "0.5" ):
       print status
   elif status == decimal.Decimal( "0.6" ):
       print status
   elif status == decimal.Decimal( "0.7" ):
       print status
   elif status == decimal.Decimal( "0.8" ):
       print status
   elif status == decimal.Decimal( "0.9" ):
       print status
   elif status == decimal.Decimal( "1.0" ):
       print status
   else:
       print "status not equal -->", status



From duncan.booth at invalid.invalid  Wed Oct  3 15:37:25 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 3 Oct 2007 19:37:25 GMT
Subject: Convert on uppercase unaccentent unicode character
References: <4703dfff$0$30966$426a74cc@news.free.fr>
	<1191439792.666146.217150@d55g2000hsg.googlegroups.com>
Message-ID: <Xns99BED1C4FA1CFduncanbooth@127.0.0.1>

timaranz at gmail.com wrote:

> On Oct 4, 7:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
> point... at invalid.org> wrote:
>> Hi,
>> I'am very newbie in Python.
>> For the moment I'am trying to convert an unicode character to his
>> uppercase unaccented character.
>> By example with locale fr_FR:
>> a,A,?,? should return A
>> o,O,?,? should return O
>> ?,? should return ?
>> i,I,?,? should return I
>>
>> Have you some suggestions ?
>>
>> Thank.
> 
> Unicode strings have an upper() method - try that.  I'm think it
> should work properly with your locale - it doesn't give the expected
> result for me with an english locale.
> 
No, that will uppercase the string, but it doesn't (and shouldn't) strip 
the accents:

>>> s = u'''By example with locale fr_FR:
a,A,?,? should return A
o,O,?,? should return O
?,? should return ?
i,I,?,? should return I'''
>>> print s.upper()
BY EXAMPLE WITH LOCALE FR_FR:
A,A,?,? SHOULD RETURN A
O,O,?,? SHOULD RETURN O
?,? SHOULD RETURN ?
I,I,?,? SHOULD RETURN I
>>> 

I guess maybe my newreader corrupted the third line. It probably corrupts 
all the others when I send this.


From alexandre.badez at gmail.com  Wed Oct 17 10:13:34 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Wed, 17 Oct 2007 14:13:34 -0000
Subject: Dynamic and lazy import
In-Reply-To: <5nmil0FiouurU1@mid.uni-berlin.de>
References: <1192540610.799241.236160@t8g2000prg.googlegroups.com>
	<47159d0a$0$11389$9b622d9e@news.freenet.de>
	<1192625367.751188.241210@y27g2000pre.googlegroups.com>
	<5nmil0FiouurU1@mid.uni-berlin.de>
Message-ID: <1192630414.917809.161930@i13g2000prf.googlegroups.com>

On Oct 17, 3:56 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Alexandre Badez wrote:
> > Thanks for all your advices, but it's not really what I would like to
> > do.
>
> > I'm going to be more clearer for what I really want to do.
>
> > Here we have got many library for different applications. All those
> > library have a version and between a version and an other, there isn't
> > always a very good backward compatibility (I know, it's very ugly, but
> > it's like that...).
>
> > Moreover some library use the version 1.1 and some the version 1.2 of
> > lib A and version 2.1 and version 2.0 of lib B ... you know what: it's
> > very ugly.
>
> > My idea was to be able to use lib quiet like that.
>
> > import A (<- If I want to use the very last version)
> > # or
> > import A.1_1 (<- If I want to use the version 1.1 of the A lib)
>
> > Something else ?
> > Yes :)
> > I do not want to add all those path in PYTHONPATH (would be too ugly,
> > and "complicated").
> > I want it lazy (do not import every version of every lib every time)
> > I want it scalable: if a user or the admin add a new lib or a version
> > of lib it would be very very great if he had nothing else (than copy
> > his directory) to do.
>
> > So what I wanted to do, was to be able to control what the user really
> > wanted to import, and act he excepted and put the "intelligence" in a
> > __init__ script
>
> Use setuptools + pkg_resources to install sereval versions of your libraries
> together and then you can require a certain version of your lib.
>
> HOWEVER: this WON'T work for several versions of a library in ONE running
> python process!!!! Because the import will then either fail silently (after
> all, "import foo" is ignored if foo is already present) or pkg_resources is
> so clever that it keeps tracks of requirements and if they are conflicting
> will puke on you.
>
> Diez

Well, I would like to be able to use "setuptools", but the problem is
that I can't.
Cause the administrator do not want us to be able to add lib in python
dir.
So we have to create our own library directory...

Moreover, I haven't seen in distutils how it manage different version
of the same library; as far as I know, It just replace the old one by
the newest one... and that's not really what I want.



From jcd at sdf.lonestar.org  Tue Oct 30 09:13:39 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 30 Oct 2007 09:13:39 -0400
Subject: Iteration for Factorials
In-Reply-To: <47271f3e$1_3@news.bluewin.ch>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<47271f3e$1_3@news.bluewin.ch>
Message-ID: <20071030131339.GA11330@sdf.lonestar.org>

On Tue, Oct 30, 2007 at 01:09:38PM +0100, Boris Borcic wrote regarding Re: Iteration for Factorials:
> 
> Py-Fun wrote:
> > I'm stuck trying to write a function that generates a factorial of a
> > number using iteration and not recursion.  Any simple ideas would be
> > appreciated.
> > 
> 
> fact = lambda n : len(map([1].__imul__,range(1,n+1))[0])
> 
> hth :)
> 

Nice one.  I was trying to grok it, and started out by breaking it down:

>>> [1].__imul__(2)
[1, 1]
>>> map([1].__imul__,range(1,3))
[[1, 1], [1, 1]]

So far so good, but I tried to break it down a little more:

>>> [1].__imul__(1), [1].__imul__(2), [1].__imul__(3)
([1], [1, 1], [1, 1, 1])

Hmm.  Wasn't what I was expecting.

Then it hit me:

>>> L = [1]
>>> L.__imul__(1), L.__imul__(2), L.__imul__(3)
([1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1])

Pretty sneaky, sis.

Cheers,
Cliff

P.S.  Regards to those who lack a grounding in American pop-culture, or who are to young to remember the origins of "Pretty sneaky, sis."


From george.sakkis at gmail.com  Tue Oct 30 12:16:40 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 30 Oct 2007 16:16:40 -0000
Subject: A Python 3000 Question
In-Reply-To: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
Message-ID: <1193761000.248965.139690@y42g2000hsy.googlegroups.com>

On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>
> > This is a FAQ:
> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-function...
>
> Holy Airy Persiflage Batman!
>
> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
> win32
> Type "help", "copyright", "credits" or "license" for more information.>>> import timeit
> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
> 0.20332271187463391
> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>
> 0.48545737364457864

Common mistake; try this instead:

timeit.Timer('seqlen()',
             'seq = range(100); seqlen=seq.__len__').timeit()

George



From gagsl-py2 at yahoo.com.ar  Fri Oct  5 21:11:54 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 05 Oct 2007 22:11:54 -0300
Subject: anyone know howto IRC to freenode over port 80?
References: <1191626310.008663.197600@d55g2000hsg.googlegroups.com>
Message-ID: <op.tzq394lhx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 05 Oct 2007 20:18:30 -0300, gavino <gavcomedy at gmail.com> escribi?:

> anyone?

http://ircatwork.com/

-- 
Gabriel Genellina



From khemkaamit at gmail.com  Tue Oct 16 02:13:09 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Tue, 16 Oct 2007 11:43:09 +0530
Subject: use lines as argument to a command
In-Reply-To: <1192506945.018694.289000@t8g2000prg.googlegroups.com>
References: <1192420069.166779.55230@y27g2000pre.googlegroups.com>
	<mailman.13.1192431559.13605.python-list@python.org>
	<1192506945.018694.289000@t8g2000prg.googlegroups.com>
Message-ID: <1360b7230710152313s34e2e4ebm75406b6dbd536f17@mail.gmail.com>

On 10/16/07, Shoryuken <sakradevanamindra at gmail.com> wrote:
> > I guess that you want to loop over a file and for each line in the
> > file you want to call some
> > external program with the line as the argument.
> >
> > Have a look at subprocess module
> >  http://docs.python.org/lib/module-subprocess.html
> >
> > If there is some else that you meant, please specify .
> >
> Thanks alot, its working now. But I have another question (sorry I'm
> so noob), how can I redirect a command's output to a file (just like
> executing a linux command "dmesg>>stat.txt")?

Since subprocess module allow you to call programs through (linux)
shell , you can use the same syntax in your command.

example:

>>> from subprocess import call
>>> call("echo foo >> bar.txt", shell=True)

Cheers,

-- 
--
Amit Khemka


From duncan.booth at invalid.invalid  Wed Oct 17 07:24:45 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 17 Oct 2007 11:24:45 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
Message-ID: <Xns99CC7D4AA3887duncanbooth@127.0.0.1>

Hrvoje Niksic <hniksic at xemacs.org> wrote:

> paul.melis at gmail.com writes:
> 
>> Right, the paragraph is actually pretty clear after a second
>> reading.  I find it surprising nonetheless, as it's easy to forget
>> to return a result when you're implementing a method that does an
>> in-place operation, like __iadd__:
> 
> I've recently been bitten by that, and I don't understand the
> reasoning behind __iadd__'s design.  I mean, what is the point of an
> *in-place* add operation (and others) if it doesn't always work
> in-place?
> 
A very common use case is using it to increment a number:

   x += 1

If += always had to work inplace then this would throw an exception: an 
inplace addition would be meaningless for Python numbers.


From besturk at gmail.com  Sat Oct 20 04:45:18 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 20 Oct 2007 01:45:18 -0700
Subject: How can i store pickle dumps data ?
Message-ID: <1192869918.043569.223280@v23g2000prn.googlegroups.com>

Hi..
I have some dictionary as {2:3, 4:6, 5:7.........}
I want to pickle to these dictionary and save to database but i
couldn't..

My code for adding..
a=eval(dict)
a=pickle.dumps(a, -1)
cursor2.execute("INSERT INTO cache VALUES ('%s', %s)", (x[0],a))
conn2.commit()

i try in UTF-8 postresql database (data type BYTEA) and it gives me
this error:
> psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
> 0x80
> HINT:  This error can also happen if the byte sequence does not match
> the encoding expected by the server, which is controlled by
> "client_encoding".

i try in LATIN5 postgresql database (data type BYTEA) and it add first
10 element and than gives me this error:
cursor2.execute("INSERT INTO cache VALUES ('%s', %s)", (x[0],a))
psycopg2.ProgrammingError: invalid input syntax for type bytea

i try in LATIN5 (data type TEXT) and it add all element but when i
want to load it give me this error:
pickle.loads(SELECTED_DATA);
EOFError


Now how can i store the pickle data ?
Which encoding and which data type ?
Please help me i'm sorry my bad english.
King Regards..



From jr244 at kent.ac.uk  Wed Oct 17 10:17:23 2007
From: jr244 at kent.ac.uk (J. Robertson)
Date: Wed, 17 Oct 2007 15:17:23 +0100
Subject: Can you determine the sign of the polar form of a complex number?
In-Reply-To: <1192629071.834342.243370@i38g2000prf.googlegroups.com>
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
	<1192629071.834342.243370@i38g2000prf.googlegroups.com>
Message-ID: <ff55hj$q6o$2@oheron.kent.ac.uk>

schaefer.mp at gmail.com wrote:
> Just to clarify what I'm after:
> 
> If you plot (-3)^n where n is a set of negative real numbers between 0
> and -20 for example, then you get a discontinuos line due to the
> problem mentioned above with fractional exponents. 
>
> .. 
> 

It looks like you crash-landed in imaginary space, you may want to think 
again about what you're up to :-)  Complex numbers are not positive or 
negative, as such.

If you want to obtain a continuous curve, then take the real part of the 
complex number you obtain, as in "((-3+0j)**(-x)).real", it will fit 
with what you obtain for integers.




From gagsl-py2 at yahoo.com.ar  Thu Oct 18 17:16:32 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 14:16:32 -0700
Subject: Running another python interpreter
In-Reply-To: <mailman.187.1192737606.13605.python-list@python.org>
References: <47179DBA.8040407@hotmail.com><4717A261.7090303@hotmail.com>
	<mailman.187.1192737606.13605.python-list@python.org>
Message-ID: <1192742192.830006.95130@e9g2000prf.googlegroups.com>

On 18 oct, 16:55, Sushant <truthismid... at aim.com> wrote:

> Does gateway.py has the python interpreter in the top (i.e.,
> #!/usr/local/bin/python)

The OP said he's on Windows so that doesn't matter.

> On Thursday 18 October 2007 2:13 pm, Simon Pickles wrote:
>
> >     os.spawnv(os.P_NOWAIT, "gateway.py", ())

Try with:

os.spawnl(os.P_NOWAIT, sys.executable, sys.executable, "gateway.py")

or use the subprocess module.

--
Gabriel Genellina



From nospam at invalid.com  Tue Oct 16 23:39:08 2007
From: nospam at invalid.com (Jack)
Date: Tue, 16 Oct 2007 20:39:08 -0700
Subject: Simple HTML template engine?
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <fpCdnWRRW6tLHojanZ2dnUVZ_rWtnZ2d@comcast.com>

This one is really small and simple (one small file):

http://davidbau.com/archives/2007/02/18/python_templates.html

"allen.fowler" <allen.fowler at yahoo.com> wrote in message 
news:1192419411.895715.138450 at e9g2000prf.googlegroups.com...
> Hello,
>
> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
>
> No need for caching, template compilation, etc.
>
> Speed is not a major issue.
>
> I just need looping and conditionals. Template inheritance would be a
> bonus.
>
> I've seen Genshi and Cheetah, but they seem way too complex.
>
> Any ideas?
>
> I'm sure I could build something myself, but I'm sure this has already
> been done quite a few times.  Why re-invent the wheel, right?
>
>
> Thank you,
> Allen
> 




From steve at holdenweb.com  Thu Oct 18 11:20:30 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 18 Oct 2007 11:20:30 -0400
Subject: open remote terminal
In-Reply-To: <ff5olg$oll$2@ger.gmane.org>
References: <ff5olg$oll$2@ger.gmane.org>
Message-ID: <ff7tk0$3dj$1@ger.gmane.org>

Fabian Braennstroem wrote:
> Hi,
> 
> I would like to use python to start an terminal, e.g. xterm, and login on a
> remote machine using rsh or ssh. This could be done using 'xterm -e ssh
> machine', but after the login I would like to jump to a given directory.
> Does anyone have an idea how to do this with python?
> 
> Regards!
> Fabian
> 
pexpect would be the usual solution, I believe, if you could get it to 
interact correctly with your virtual terminal.

   http://pexpect.sourceforge.net/

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 23 14:52:29 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 23 Oct 2007 20:52:29 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
	<mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
Message-ID: <471e431f$0$21451$426a34cc@news.free.fr>

Steven Bethard a ?crit :
> Bruno Desthuilliers wrote:
> 
>> Steven Bethard a ?crit :
>>
>>> Bruno Desthuilliers wrote:
>>>
>>>> Steven Bethard a ?crit :
>>>> (snip)
>>>>
>>>>> In Python, you can use property() to make method calls look like 
>>>>> attribute access.  This could be necessary if you have an existing 
>>>>> API that used public attributes, but changes to your code require 
>>>>> those attributes to do additional calculations now.
>>>>>
>>>>> But if you're creating a class for the first time, it should 
>>>>> *never* use property().  There's no need to retrofit anything.
>>>>
>>>>
>>>> May I kindly disagree here ?-)
>>>
>>>
>>> Of course. ;-)
>>>
>>>> Computed attributes are IMHO not only a life-saver when it comes to 
>>>> refactoring. There are cases where you *really* have - by 'design' 
>>>> I'd say - the semantic of a property, but know from the start you'll 
>>>> need computation (for whatever reason). Then what would be the 
>>>> rationale for using explicit getters/setters ?
>>>
>>>
>>> I'd be interested to hear what these use cases are.
>>
>>
>> I once wrote a small ORM-like wrapper for LDAP access, and, for 
>> reasons that might be obvious for anyone having worked with LDAP, I 
>> choosed to keep the record values in the format used by the lower 
>> level LDAP lib and let user code access them thru computed attributes 
>> (actually custom-made descriptors).
> 
> 
> But this is trying to match an existing API,

Certainly not. There's *no* existing API here. It's just exposing as 
attributes some values that are *not* attributes, and that requires some 
computation to get at.

> the only case that I think 
> you *should* be using property().
> 
>> I could also list the CS101 examples, like Shape.area, 
>> Rect.bottom_right, Person.age, etc... And yes, some of these 
>> attributes are obviously read-only. That doesn't prevent them from 
>> being semantically *properties*, not *behaviour*.
> 
> 
> But as I mentioned in another email here, I'd rather know which ones 
> require computation, on the off chance that even the small amount of 
> additional calculation matters (say, for large integers or in a very 
> tight loop).

And then ? If you need to get this value, and getting it requires 
computation, then you'll have to do that computation - whatever the 
context. Looks like premature optimization to me. And then, what then if 
the implementation changes and what was plain attributes get turned into 
properties and vice-versa ?

> I guess as long as your documentation is clear about which attributes 
> require computation and which don't...

Why should it ? FWIW, I mentionned that I would obviously not use 
properties for values requiring heavy, non cachable computation. This 
set aside, the fact that the attribute is computed (or not) is none of 
the concerns of client code. I think you know that concept, it's called 
'encapsulation' !-)


From grante at visi.com  Tue Oct  9 14:32:15 2007
From: grante at visi.com (Grant Edwards)
Date: Tue, 09 Oct 2007 18:32:15 -0000
Subject: NUCULAR fielded text searchable indexing
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<mailman.33.1191950662.916.python-list@python.org>
Message-ID: <13gni9f4eq8pc4b@corp.supernews.com>

On 2007-10-09, Robin Becker <robin at reportlab.com> wrote:
> aaron.watters at gmail.com wrote:
>> On Oct 9, 8:46 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
>>> ps. there is a python project named "The Devil Framework", I cringe
>>> every time I hear about it.Nucularis not as bad, but it is close.
>> 
>> Aw shucks.  I thought it was funny.  Can't I make fun of
>> politicians in my open source projects?  Besides there is
>> a great tradition of tounge-in-cheek package names, like
>> "Cold fusion", for example.
>>.......
>
> I think it's an excellent name :)

And Bush would probably pronounce it "Nuke-lee-ur".

-- 
Grant Edwards                   grante             Yow! I like your SNOOPY
                                  at               POSTER!!
                               visi.com            


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 18 13:38:12 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 19:38:12 +0200
Subject: Convert string to command..
In-Reply-To: <1192723746.476620.244430@e34g2000pro.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
Message-ID: <47179a04$0$16398$426a74cc@news.free.fr>

Abandoned a ?crit :
(snip)
> I'm very confused :(
> I try to explain main problem...
> I have a table like this:
> id-1 | id-2 | value
> 23     24       34
> 56     68       66
> 56     98       32455
> 55     62       655
> 56     28       123
> .... ( 3 millions elements)
> 
> I select where id=56 and 100.000 rows are selecting but this took 2
> second. (very big for my project)

Not to bad in the absolute.

> I try cache to speed up this select operation..
> And create a cache table:
> id-1 | all
> 56    {68:66, 98:32455, 62:655}

I really doubt this is the right way to go.

> When i select where id 56 i select 1 row and its took 0.09 second but
> i must convert text to dictionary..
> 
> Have you got any idea what can i do this conver operation ?

Other alread answered

> Have you got any idea what can i do cache for this table ?

Depends on your RDBMS. And as far as I'm concerned, I'd start by trying 
to find out how to optimize this query within the RDBMS - good ones are 
usually highly optimized softwares with provision for quite a lot of 
performance tuning.


From danbrotherston at gmail.com  Thu Oct 18 09:43:45 2007
From: danbrotherston at gmail.com (danbrotherston)
Date: Thu, 18 Oct 2007 13:43:45 -0000
Subject: Capturing OutputDebugString information in python
In-Reply-To: <mailman.115.1192611992.13605.python-list@python.org>
References: <1192566889.524862.167030@k35g2000prh.googlegroups.com>
	<mailman.115.1192611992.13605.python-list@python.org>
Message-ID: <1192715025.231413.32830@e34g2000pro.googlegroups.com>

<snip>

Wow, more of a response than I expected, thanks very much for the
research.  While not related to the mutex, the problem did appear to
be permission related.  For the record, on windows XP

import sys
import mmap
import win32event

buffer_ready = win32event.CreateEvent (None, 0, 0,
"DBWIN_BUFFER_READY")
data_ready = win32event.CreateEvent (None, 0, 0, "DBWIN_DATA_READY")
buffer = mmap.mmap (0, 4096, "DBWIN_BUFFER", mmap.ACCESS_WRITE)


win32event.SetEvent (buffer_ready)


while win32event.WaitForSingleObject (data_ready, 1000) ==
win32event.WAIT_TIMEOUT:
   print "Timed out"

print "Was signaled"

appears to work.  Write access appears to be required for the buffer
(which I can read and get useful data from:

print buffer.read(4)
print buffer.read(4092)

and no security object.  I wasn't the one who figured this out, so I'm
really not sure why it works...but it seems to.




From horpner at yahoo.com  Wed Oct 31 10:13:28 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 31 Oct 2007 14:13:28 GMT
Subject: A Python 3000 Question
References: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<mailman.653.1193760145.13605.python-list@python.org>
	<slrnfigtq9.1mk.horpner@FIAD06.norwich.edu>
	<Xns99DA8CAD0B7E2duncanbooth@127.0.0.1>
Message-ID: <slrnfih3eo.1dc.horpner@FIAD06.norwich.edu>

On 2007-10-31, Duncan Booth <duncan.booth at invalid.invalid> wrote:
> Obviously it isn't an absolute thing: lists and dictionaries do
> have other methods in the user namespace, so the decision to
> keep len out of that namespace is partly a judgement call, and
> partly historical (I think tuples didn't used to have any
> methods at all).

Thanks for the interesting note. I didn't know that tuples
originally had no methods. That made len mandatory, I suppose.

-- 
Neil Cerutti
The Pastor would appreciate it if the ladies of the congregation would lend
him their electric girdles for the pancake breakfast next Sunday morning.
--Church Bulletin Blooper


From panguohualove at sina.com  Sun Oct  7 22:57:11 2007
From: panguohualove at sina.com (panguohua)
Date: Sun, 07 Oct 2007 19:57:11 -0700
Subject: a good website for softwares,movies and music etc.
Message-ID: <1191812231.760339.172030@22g2000hsm.googlegroups.com>

www.space666.com


support!!!!!!!!!!!!!!!!



From juan at juanreyero.com  Thu Oct 18 04:20:09 2007
From: juan at juanreyero.com (Joan M. Garcia)
Date: Thu, 18 Oct 2007 10:20:09 +0200
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<ff27mh$n3v$1@news2.u-psud.fr>
	<1192544637.359203.73260@v23g2000prn.googlegroups.com>
Message-ID: <m2przcq1fq.fsf@antares.emea.hpqcorp.net>

George Sakkis <george.sakkis at gmail.com> writes:
> On Oct 16, 7:35 am, Laurent Pointal <laurent.poin... at limsi.fr> >
>> How does it compare to the scalar module ?
>> (seehttp://russp.us/scalar.htm)
>
> or the Unum module (http://home.scarlet.be/be052320/Unum.html) ?

Both scalar and unum treat units as variables.  You are
supposed to import them, so you end up with variables like M
and S in your namespace.  And they don't seem to be able to
understand prefixes as they combine with variable names.

On the other side, they both provide something that
magnitude does not have: the ability to define arbitrary
units.  magnitude limits you to combinations of the standard
SI units, plus dollar and bit.  It is trivial to implement
user generation of arbitrary names for these combinations,
but not of arbitrary independent units.

jm


From jeffstatin at yahoo.com  Sun Oct 21 12:52:43 2007
From: jeffstatin at yahoo.com (jeffstatin at yahoo.com)
Date: Sun, 21 Oct 2007 09:52:43 -0700
Subject: errors while building a program with Python
Message-ID: <1192985563.490275.269130@q5g2000prf.googlegroups.com>

Hi,

I'm trying to build a program (MixMinion) with Python 2.5.1, MSVS 2003
SP1 and Windows XP Home SP2 but I'm getting a couple of errors.

Here are the two errors I am getting:
(1) .\contrib\OpenSSL\lib\Builder5\ssleay32.lib : fatal error LNK1136:
invalid or corrupt file
(2) error: command '"C:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\bin\link.exe"' failed with exit status 1136


Here is the terminal output log:
------------------------------------------------
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Owner>cd C:\MixMinion\Mixminion-0.0.8alpha3

C:\MixMinion\Mixminion-0.0.8alpha3>python setup.py build
Host is little-endian
C:\Python25\Lib\config\Makefile
running build
running build_py
creating build\lib.win32-2.5
creating build\lib.win32-2.5\mixminion
copying lib\mixminion\benchmark.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\BuildMessage.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\ClientAPI.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\ClientDirectory.py -> build
\lib.win32-2.5\mixminion
copying lib\mixminion\ClientMain.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\ClientUtils.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Common.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Config.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Crypto.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Filestore.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Fragments.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Main.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\MMTPClient.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\NetUtils.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\Packet.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\ScheduleUtils.py -> build
\lib.win32-2.5\mixminion
copying lib\mixminion\ServerInfo.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\SExpression.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\test.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\testSupport.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\ThreadUtils.py -> build\lib.win32-2.5\mixminion
copying lib\mixminion\TLSConnection.py -> build
\lib.win32-2.5\mixminion
copying lib\mixminion\__init__.py -> build\lib.win32-2.5\mixminion
creating build\lib.win32-2.5\mixminion\server
copying lib\mixminion\server\DNSFarm.py -> build
\lib.win32-2.5\mixminion\server
copying lib\mixminion\server\EventStats.py -> build
\lib.win32-2.5\mixminion\serv
er
copying lib\mixminion\server\HashLog.py -> build
\lib.win32-2.5\mixminion\server
copying lib\mixminion\server\MMTPServer.py -> build
\lib.win32-2.5\mixminion\serv
er
copying lib\mixminion\server\Modules.py -> build
\lib.win32-2.5\mixminion\server
copying lib\mixminion\server\PacketHandler.py -> build
\lib.win32-2.5\mixminion\s
erver
copying lib\mixminion\server\Pinger.py -> build\lib.win32-2.5\mixminion
\server
copying lib\mixminion\server\ServerConfig.py -> build
\lib.win32-2.5\mixminion\se
rver
copying lib\mixminion\server\ServerKeys.py -> build
\lib.win32-2.5\mixminion\serv
er
copying lib\mixminion\server\ServerMain.py -> build
\lib.win32-2.5\mixminion\serv
er
copying lib\mixminion\server\ServerQueue.py -> build
\lib.win32-2.5\mixminion\ser
ver
copying lib\mixminion\server\__init__.py -> build
\lib.win32-2.5\mixminion\server

creating build\lib.win32-2.5\mixminion\directory
copying lib\mixminion\directory\DirCGI.py -> build
\lib.win32-2.5\mixminion\direc
tory
copying lib\mixminion\directory\Directory.py -> build
\lib.win32-2.5\mixminion\di
rectory
copying lib\mixminion\directory\DirFormats.py -> build
\lib.win32-2.5\mixminion\d
irectory
copying lib\mixminion\directory\DirMain.py -> build
\lib.win32-2.5\mixminion\dire
ctory
copying lib\mixminion\directory\ServerInbox.py -> build
\lib.win32-2.5\mixminion\
directory
copying lib\mixminion\directory\ServerList.py -> build
\lib.win32-2.5\mixminion\d
irectory
copying lib\mixminion\directory\__init__.py -> build
\lib.win32-2.5\mixminion\dir
ectory
running build_ext
building 'mixminion._minionlib' extension
creating build\temp.win32-2.5
creating build\temp.win32-2.5\Release
creating build\temp.win32-2.5\Release\src
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /
nologo /Ox
 /MD /W3 /GX /DNDEBUG -DMM_L_ENDIAN=1 -I.\contrib\OpenSSL\include -I.
\contrib\op
enssl\include -Isrc -IC:\Python25\include -IC:\Python25\PC /Tcsrc/
crypt.c /Fobui
ld\temp.win32-2.5\Release\src/crypt.obj
crypt.c
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /
nologo /Ox
 /MD /W3 /GX /DNDEBUG -DMM_L_ENDIAN=1 -I.\contrib\OpenSSL\include -I.
\contrib\op
enssl\include -Isrc -IC:\Python25\include -IC:\Python25\PC /Tcsrc/
aes_ctr.c /Fob
uild\temp.win32-2.5\Release\src/aes_ctr.obj
aes_ctr.c
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /
nologo /Ox
 /MD /W3 /GX /DNDEBUG -DMM_L_ENDIAN=1 -I.\contrib\OpenSSL\include -I.
\contrib\op
enssl\include -Isrc -IC:\Python25\include -IC:\Python25\PC /Tcsrc/
main.c /Fobuil
d\temp.win32-2.5\Release\src/main.obj
main.c
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /
nologo /Ox
 /MD /W3 /GX /DNDEBUG -DMM_L_ENDIAN=1 -I.\contrib\OpenSSL\include -I.
\contrib\op
enssl\include -Isrc -IC:\Python25\include -IC:\Python25\PC /Tcsrc/
tls.c /Fobuild
\temp.win32-2.5\Release\src/tls.obj
tls.c
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /
nologo /Ox
 /MD /W3 /GX /DNDEBUG -DMM_L_ENDIAN=1 -I.\contrib\OpenSSL\include -I.
\contrib\op
enssl\include -Isrc -IC:\Python25\include -IC:\Python25\PC /Tcsrc/
fec.c /Fobuild
\temp.win32-2.5\Release\src/fec.obj
fec.c
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\link.exe /
DLL /nologo
 /INCREMENTAL:NO /LIBPATH:.\contrib\OpenSSL\lib\Builder5 /LIBPATH:.
\contrib\open
ssl\lib\builder5 /LIBPATH:C:\Python25\libs /LIBPATH:C:
\Python25\PCBuild ssleay32
.lib libeay32.lib advapi32.lib /EXPORT:init_minionlib build
\temp.win32-2.5\Relea
se\src/crypt.obj build\temp.win32-2.5\Release\src/aes_ctr.obj build
\temp.win32-2
.5\Release\src/main.obj build\temp.win32-2.5\Release\src/tls.obj build
\temp.win3
2-2.5\Release\src/fec.obj /OUT:build\lib.win32-2.5\mixminion
\_minionlib.pyd /IMP
LIB:build\temp.win32-2.5\Release\src\_minionlib.lib
.\contrib\OpenSSL\lib\Builder5\ssleay32.lib : fatal error LNK1136:
invalid or co
rrupt file
error: command '"C:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\bin\link
.exe"' failed with exit status 1136

C:\MixMinion\Mixminion-0.0.8alpha3>
--------------------------------------------------------

Thanks



From mail at gedankenkonstrukt.de  Tue Oct 30 04:06:42 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Tue, 30 Oct 2007 09:06:42 +0100
Subject: A Python 3000 Question
In-Reply-To: <5on3ueFnq6p5U1@mid.individual.net>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<5on3ueFnq6p5U1@mid.individual.net>
Message-ID: <fg6oml$bq0$1@newsreader2.netcologne.de>

Bjoern Schliessmann:
> Is there any particular reason why it should be a method?
> 
> [..]
> 
> To make a long story short: Most methods do specific things with
> objects; but len is a common function to get a simple property of
> an object.

You said it. IMHO it really could be a *property*, say `object.len`.
It doesn't do something on the object, but rather gives some information
about its "state".

-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From jbamsterdam at gmail.com  Thu Oct 25 12:00:43 2007
From: jbamsterdam at gmail.com (Jonathan Amsterdam)
Date: Thu, 25 Oct 2007 16:00:43 -0000
Subject: bug: subprocess.Popen() hangs
Message-ID: <1193328043.071424.252080@o38g2000hse.googlegroups.com>

This is a bug in python 2.4 under Linux 2.6.

I occasionally see subprocess.Popen() fail to return, and I have
finally figured out roughly what's going on. It involves the GC and
stderr.

1. os.fork()

2. Parent blocks reading from errpipe_read (subprocess.py:982)

3. In child, a GC occurs before the exec.

4. The GC attempts to free a file descriptor, calling file_dealloc.

5. That function gets an error closing the descriptor ("close failed:
[Errno 9] Bad file descriptor\n," is the string I extracted via gdb).

6. It attempts to write the error to stderr and blocks. Since it never
execs or writes to errpipe_write, both child and parent are hung.

Here is the pstack output on the child:

#0  0x006587a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0072f11b in __write_nocancel () from /lib/tls/libc.so.6
#2  0x006d409f in _IO_new_file_write () from /lib/tls/libc.so.6
#3  0x006d42ec in _IO_new_file_xsputn () from /lib/tls/libc.so.6
#4  0x006afce9 in buffered_vfprintf () from /lib/tls/libc.so.6
#5  0x006afe8b in vfprintf () from /lib/tls/libc.so.6
#6  0x080dd4af in mywrite ()
#7  0x080dd505 in PySys_WriteStderr ()
#8  0x08064cd0 in file_dealloc ()
#9  0x08079c88 in dict_dealloc ()
#10 0x0808931d in subtype_dealloc ()
#11 0x08079af3 in PyDict_Clear ()
#12 0x0807bb6a in dict_tp_clear ()
#13 0x080e0ead in collect ()
#14 0x080e1912 in _PyObject_GC_New ()
#15 0x0805e50b in PyInstance_NewRaw ()
#16 0x0805e5d7 in PyInstance_New ()
#17 0x0805bdc0 in PyObject_Call ()
#18 0x080aecef in PyEval_CallObjectWithKeywords ()
#19 0x080ca975 in PyErr_NormalizeException ()
#20 0x080b492c in PyEval_EvalFrame ()
#21 0x080b5eb2 in PyEval_EvalCodeEx ()
#22 0x080b3c83 in PyEval_EvalFrame ()
#23 0x080b5734 in PyEval_EvalFrame ()
#24 0x080b5eb2 in PyEval_EvalCodeEx ()
#25 0x080fce92 in function_call ()
#26 0x0805bdc0 in PyObject_Call ()
#27 0x080641e5 in instancemethod_call ()
#28 0x0805bdc0 in PyObject_Call ()
#29 0x0808ffce in slot_tp_init ()
#30 0x08088b3a in type_call ()
#31 0x0805bdc0 in PyObject_Call ()
#32 0x080b0f05 in PyEval_EvalFrame ()
#33 0x080b5eb2 in PyEval_EvalCodeEx ()
#34 0x080fce92 in function_call ()
#35 0x0805bdc0 in PyObject_Call ()
#36 0x080641e5 in instancemethod_call ()
#37 0x0805bdc0 in PyObject_Call ()
#38 0x0808ffce in slot_tp_init ()
#39 0x08088b3a in type_call ()
#40 0x0805bdc0 in PyObject_Call ()
#41 0x080b0f05 in PyEval_EvalFrame ()
#42 0x080b5734 in PyEval_EvalFrame ()
#43 0x080b5eb2 in PyEval_EvalCodeEx ()
#44 0x080fce92 in function_call ()
#45 0x0805bdc0 in PyObject_Call ()
#46 0x080641e5 in instancemethod_call ()
#47 0x0805bdc0 in PyObject_Call ()
#48 0x0808ffce in slot_tp_init ()
#49 0x08088b3a in type_call ()
#50 0x0805bdc0 in PyObject_Call ()
#51 0x080b0f05 in PyEval_EvalFrame ()
#52 0x080b5eb2 in PyEval_EvalCodeEx ()
#53 0x080fce92 in function_call ()
#54 0x0805bdc0 in PyObject_Call ()
#55 0x080b075f in PyEval_EvalFrame ()
#56 0x080b5734 in PyEval_EvalFrame ()
#57 0x080b5734 in PyEval_EvalFrame ()
#58 0x080b5734 in PyEval_EvalFrame ()
#59 0x080b5eb2 in PyEval_EvalCodeEx ()
#60 0x080b3c83 in PyEval_EvalFrame ()
#61 0x080b5734 in PyEval_EvalFrame ()
#62 0x080b5734 in PyEval_EvalFrame ()
#63 0x080b5eb2 in PyEval_EvalCodeEx ()
#64 0x080b3c83 in PyEval_EvalFrame ()
#65 0x080b5eb2 in PyEval_EvalCodeEx ()
#66 0x080b3c83 in PyEval_EvalFrame ()
#67 0x080b5eb2 in PyEval_EvalCodeEx ()
#68 0x080b3c83 in PyEval_EvalFrame ()
#69 0x080b5734 in PyEval_EvalFrame ()
#70 0x080b5734 in PyEval_EvalFrame ()
#71 0x080b5734 in PyEval_EvalFrame ()
#72 0x080b5734 in PyEval_EvalFrame ()
#73 0x080b5734 in PyEval_EvalFrame ()
#74 0x080b5eb2 in PyEval_EvalCodeEx ()
#75 0x080fce92 in function_call ()
#76 0x0805bdc0 in PyObject_Call ()
#77 0x080b075f in PyEval_EvalFrame ()
#78 0x080b5eb2 in PyEval_EvalCodeEx ()
#79 0x080b3c83 in PyEval_EvalFrame ()
#80 0x080b5eb2 in PyEval_EvalCodeEx ()
#81 0x080b3c83 in PyEval_EvalFrame ()
#82 0x080b5eb2 in PyEval_EvalCodeEx ()
#83 0x080b3c83 in PyEval_EvalFrame ()
#84 0x080b5734 in PyEval_EvalFrame ()
#85 0x080b5734 in PyEval_EvalFrame ()
#86 0x080b5eb2 in PyEval_EvalCodeEx ()
#87 0x080b601a in PyEval_EvalCode ()
#88 0x080d9ff4 in PyRun_FileExFlags ()
#89 0x080da8d6 in PyRun_SimpleFileExFlags ()
#90 0x08055617 in Py_Main ()
#91 0x08054e3f in main ()



From george.sakkis at gmail.com  Wed Oct 24 01:34:42 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 24 Oct 2007 05:34:42 -0000
Subject: transforming list
In-Reply-To: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
References: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
Message-ID: <1193204082.500986.199300@y27g2000pre.googlegroups.com>

On Oct 23, 10:46 pm, james_027 <cai.hai... at gmail.com> wrote:
> hi,
>
> i have a list from a resultset like this
> 1,"Chicago Bulls",,,""
> 2,"Cleveland Caveliers",,,""
> 4,"Detroit Pistons",1,"23686386.35"
> 4,"Detroit Pistons",2,"21773898.07"
> 4,"Detroit Pistons",3,"12815215.57"
> 4,"Detroit Pistons",4,"48522347.76"
> 4,"Detroit Pistons",5,"28128425.99"
> 4,"Detroit Pistons",6,"15681603.08"
> 4,"Detroit Pistons",8,"12627725.03"
> 4,"Detroit Pistons",9,"11417.00"
> 4,"Detroit Pistons",10,"945689.22"
> 4,"Detroit Pistons",11,"818246.57"
> 4,"Detroit Pistons",12,"1154292.77"
> 5,"Phoenix Suns",1,"23211445.97"
> 5,"Phoenix Suns",3,"11268469.53"
> 5,"Phoenix Suns",4,"49913569.61"
> 5,"Phoenix Suns",5,"26035236.09"
> 5,"Phoenix Suns",7,"113953310.50"
> 5,"Phoenix Suns",8,"17091769.84"
> 5,"Phoenix Suns",10,"818569.99"
> 5,"Phoenix Suns",11,"824602.19"
> 5,"Phoenix Suns",12,"1142018.11"
>
> and I wish to transform it into something like this
>
> 1, "Chicago Bulls", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> 2, "Cleveland Caveliers", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> 4, "Detroit Pistons", 23686386.35, 21773898.07, 12815215.57,
> 48522347.76, 28128425.99, 15681603.08, 0, 12627725.03, 11417.00,
> 945689.22, 818246.57, 1154292.77
> 5, "Phoenix Suns", 23211445.97, 0, 11268469.53, 499113569.61,
> 26035236.09, 0, 113953310.50, 17091769.84, 0, 818569.99, 824602.19,
> 1142018.11
>
> currently my solution is something like this the rows is the original
> list which is list of list ... the report is a list of list with the
> new arrangement that I want.
>
>         report = []
>         report_item = None
>         temp_c_id = 0
>         for row in rows:
>             if not row[0] == temp_c_id:
>                 temp_c_id = row[0]
>                 if report_item: report.append(report_item)
>                 report_item = [row[0], row[1], 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0]
>             if row[2]:
>                 report_item[row[2]+1] = row[3]

This doesn't print the last row (5, "Phoenix Suns", ...); you need one
more append outside the loop (if report_item:
report.append(report_item)).

> I feel this solution is not that good, can I make this more pythonic?!

Sure; get familiar with a swiss-knife module, itertools, and in
particular for this task, groupby:


from operator import itemgetter
from itertools import groupby, chain

def group_roster(rows, num_stats=12):
    # group the rows by their first two elements
    # Caveat: the rows should already be sorted by
    # the same key
    for key,group in groupby(rows, itemgetter(0,1)):
        stats = [0.0] * num_stats
        for row in group:
            if row[2]: stats[int(row[2])-1] = float(row[3])
        yield list(chain(key,stats))

if __name__ == '__main__':
    import csv
    for row in group_roster(csv.reader(open('roster.txt'))):
        print row


HTH,
George



From yuxi at ece.gatech.edu  Thu Oct 25 20:43:27 2007
From: yuxi at ece.gatech.edu (Yu-Xi Lim)
Date: Thu, 25 Oct 2007 20:43:27 -0400
Subject: Dual Python Installed Environments..
In-Reply-To: <mailman.464.1193349245.13605.python-list@python.org>
References: <mailman.464.1193349245.13605.python-list@python.org>
Message-ID: <ffrd7f$irk$1@news-int2.gatech.edu>

sam wrote:
> Hey Diez...
> 
> So you're saying it's as simple as creating an env var, and setting it to
> the python version...
> 
> ok.. (and yeah, we're talking fedora)
> 

No, env doesn't create an environment variable. It creates a modified 
environment. The goal here is to have the proper PATH variable set up. 
env is the preferred method of invoking the Python (and other) 
interpreter since it may not always be at /usr/bin/python.

In distributions like Fedora, /usr/bin/python is usually a symlink to 
one of python2.5, python2.4, or python2.3 (or whatever have you), each 
one corresponding to the appropriate Python version. So you're just 
running the Python interpreter with the version number you desire 
directly. Without the version number, you will be using the system default.

Thus the actual contents of the script running under Python 2.4 is:

#!/usr/bin/env python2.4

print "Hello, World!"


From fakeaddress at nowhere.org  Wed Oct 31 05:33:48 2007
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 31 Oct 2007 09:33:48 GMT
Subject: basic threading question
In-Reply-To: <13igdq81vlpfk4b@corp.supernews.com>
References: <13ifh9hf5eor49f@corp.supernews.com>
	<1193789794.782609.197860@z9g2000hsf.googlegroups.com>
	<13igdq81vlpfk4b@corp.supernews.com>
Message-ID: <0_XVi.51817$RX.28748@newssvr11.news.prodigy.net>

[david] wrote:
> If I have 37 threads, all calling a large function 'f', are the formal 
> parameters thread safe?
> 
> That is, will the formal parameters be trashed?  Do you need to use 
> locks or semaphores before using formal parameters? Are the labels for
> formal parameters static?
> 
> If I have 73 threads, all calling a large function 'f', are the local 
> values thread safe? Does each thread maintain it's own stack? Are the 
> labels for local values stack-based?

Yes. Each thread has its own stack, and that's where the parameter
bindings live.

Of course if you pass the same mutable object in multiple threads,
that's a different issue.


-- 
--Bryan


From deets at nospam.web.de  Thu Oct 11 10:12:46 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 16:12:46 +0200
Subject: RMI with Pyro et al
References: <mailman.77.1192108312.927.python-list@python.org>
Message-ID: <5n6pauFgghv4U1@mid.uni-berlin.de>

Sells, Fred wrote:

> Diez B. Roggisch wrote
> . Why do you want that (hot deploy)
>> anyway? Does startuptime of a script really bother you?
>> shouldn't take
>> more than a few seconds.
> 
> My primary need is development/debug.  I'm a Pyro newbie and I add a
> feature and then test.  The only way I've found to kill the Pyro server
> on XP is to open the task manager and kill the python task (hopefully
> the right one).

Go install cygwin (but not it's included python-interpreter, or at least
make sure you have your python path properly under control) and then simply
start the script from the command-line. And hit C-c if you need it to stop,
and restart it. Only start it as service if it's deployed.

Diez


From pavlovevidence at gmail.com  Sun Oct 21 19:15:51 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Sun, 21 Oct 2007 19:15:51 -0400
Subject: C++ version of the C Python API?
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<471BBD55.9030601@v.loewis.de>
	<mailman.297.1193001443.13605.python-list@python.org>
Message-ID: <471bddf1$0$26331$4c368faf@roadrunner.com>

On Sun, 21 Oct 2007 16:17:19 -0500, Robert Dailey wrote:
> On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
>> No, I literally meant that the Python C API is object-oriented. You
>> don't need an object-oriented language to write object-oriented code.
> 
> I disagree with this statement. C is not an object oriented language,
> and I've seen attempts to make it somewhat object oriented, however it
> failed miserably in readability and manageability overhead. However,
> this isn't the place to discuss such a thing so I've got nothing more to
> say than that.

What he means is that the C API provides a complete, if boilerplate-
heavy, interface to object oriented aspects of Python.  I.e., you can 
write Python types completely in C, including all the OOPy stuff like 
inheritance and so on.  You don't need a language with built-in support 
of OOP to do that.

Now, a C++ API for CPython would necessarily be built on top of the C 
API, which carries some limitations relative to the OOP abilities of C++ 
itself.  I suspect all you'll get from a C++ binding is a slightly more 
comfortable (to people who like C++) calling interface.  It could help 
bring some unity to your extension code, and maybe get rid of a few 
typecasts and simplify function names.  But you shouldn't expect anything 
like the ability to freely inherit between C++ and Python classes.


Carl Banks


From iansan at gmail.com  Wed Oct 17 13:29:29 2007
From: iansan at gmail.com (IamIan)
Date: Wed, 17 Oct 2007 17:29:29 -0000
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192529804.759199.76350@i13g2000prf.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
Message-ID: <1192642169.072563.68190@q5g2000prf.googlegroups.com>

Thank you for the replies. After a lot of research I tracked down the
issue. I was using the CGI to build all of the pages for the site,
then filling in content with .innerHTML= as users clicked on tabs.
Since I wanted to place the Google Ads in different parts of each
page, the Google Ads JavaScript was in each page chunk being
dynamically placed with .innerHTML.

It turns out that JavaScript isn't executed when it is placed in a
page via .innerHTML. I tried some tricks to execute it after it was
added to the page (eval, appendChild) but it still didn't work. The
Google Ads JavaScript is very touchy and their agreement is very
strict; it wasn't even clear that what I was doing was in line with
it, so I broke the site up into multiple CGI pages and now it works
fine.

One CGI question - since all of my CGIs are spitting out HTML is their
source code safe? wget and linking to the source deliver the output
HTML. Are there any other methods of trying to steal the source CGI I
need to protect against?

Thank you.



From tjreedy at udel.edu  Fri Oct 26 23:41:32 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 26 Oct 2007 23:41:32 -0400
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>	<87fxzyjkr1.fsf@benfinney.id.au><13i3lg8k3j64s7b@corp.supernews.com>
	<4722398D.7070903@ncee.net>
Message-ID: <ffuc1b$3se$1@ger.gmane.org>


"Shane Geiger" <sgeiger at ncee.net> wrote in message 
news:4722398D.7070903 at ncee.net...


a buggy hack (copying your top post style)

>>> D(123456789.123456789)
Decimal("123456789.123")

Or what there an unwritten :-)?

| D = lambda x: decimal.Decimal(str(x))
|
| >> D(3.2)
| Decimal("3.2")





From jimmy.musselwhite at gmail.com  Fri Oct 26 19:29:34 2007
From: jimmy.musselwhite at gmail.com (jimmy.musselwhite at gmail.com)
Date: Fri, 26 Oct 2007 16:29:34 -0700
Subject: Going past the float size limits?
In-Reply-To: <mailman.487.1193439370.13605.python-list@python.org>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
Message-ID: <1193441374.061735.308710@o38g2000hse.googlegroups.com>

On Oct 26, 6:56 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/26/07, jimmy.musselwh... at gmail.com <jimmy.musselwh... at gmail.com> wrote:
>
> > Hello all
> > It would be great if I could make a number that can go beyond current
> > size limitations. Is there any sort of external library that can have
> > infinitely huge numbers? Way way way way beyond say 5x10^350 or
> > whatever it is?
>
> > I'm hitting that "inf" boundary rather fast and I can't seem to work
> > around it.
>
> What in the world are you trying to count?

The calculation looks like this

A = 0.35
T = 0.30
C = 0.25
G = 0.10

and then I basically continually multiply those numbers together. I
need to do it like 200,000+ times but that's nuts. I can't even do it
1000 times or the number rounds off to 0.0. I tried taking the inverse
of these numbers as I go but then it just shoots up to "inf".



From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 27 21:33:54 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 28 Oct 2007 01:33:54 -0000
Subject: while within while
References: <mailman.515.1193512303.13605.python-list@python.org>
Message-ID: <13i7po29pathec2@corp.supernews.com>

On Sat, 27 Oct 2007 15:11:37 -0400, Shawn Minisall wrote:

> I've been having some problems with using a while statement for one menu
> within another while statement for the main menu, first time I've done
> it.  

[snip]

> def main():

[and snip masses and masses of code]

The first thing you should do is break your program up into functions 
rather than putting everything into one massive lump of code.

I know some people who, once they reach ten lines of code, break it up 
into a separate function. That's possibly a little extreme, but at the 
very least you should split each logical group of code into its own 
function. For example, your main() function might look something vaguely 
like this:


def main():
    initialize()
    welcome()
    finished = False
    while not finished:
        finished = play_game()
    goodbye()


Notice that there's only one while loop. That's because the inner while 
loop is inside the play_game() function.

Perhaps the biggest reason for splitting your code into functions is that 
it allows you to isolate each logical task as a separate piece of code, 
write it, test and debug it in isolation.


-- 
Steven


From OnCallSupport321 at gmail.com  Wed Oct 10 09:38:25 2007
From: OnCallSupport321 at gmail.com (OnCallSupport321 at gmail.com)
Date: Wed, 10 Oct 2007 06:38:25 -0700
Subject: Jython import coventions
In-Reply-To: <1191984173.960048.278230@19g2000hsx.googlegroups.com>
References: <1191984173.960048.278230@19g2000hsx.googlegroups.com>
Message-ID: <1192023505.316602.190430@y42g2000hsy.googlegroups.com>

On Oct 9, 10:42 pm, Benjamin <musiccomposit... at gmail.com> wrote:
> When importing Java packages in Jython, what is the convention to
> simplify imports? For example:
> import java.util as util
> Is this correct? Or should I use from * import *?

I have preferred the style...

import java
import javax

...and then using complete references to java classes, in your case,
java.util.whatever. It clearly shows me where I'm using Python classes
vs. java classes when I read my own code. For this situation, more
path structure seems less confusing to me.



From arkanes at gmail.com  Wed Oct 17 15:11:01 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 17 Oct 2007 14:11:01 -0500
Subject: Problem of Readability of Python
In-Reply-To: <1192647190.910650.98390@i38g2000prf.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
	<1192647190.910650.98390@i38g2000prf.googlegroups.com>
Message-ID: <4866bea60710171211v51818f36rd18b99541145cdfd@mail.gmail.com>

On 10/17/07, kiilerix at gmail.com <kiilerix at gmail.com> wrote:
> On Oct 7, 10:24 pm, al... at mac.com (Alex Martelli) wrote:
> > $ python -mtimeit -s'class A(object):pass' -s'a=A()' 'a.zop=23'
>
> When I know that all instances of classes inheriting from object have
> a namespace, then I would expect either that all objects have a
> namespace or that it was inherited from object. I would expect
> instantiating object to be the simplest and best way to get a
> namespace.
>
> But ...
>
> >>> o = object()
> >>> o.foo = 7
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'object' object has no attribute 'foo'
> >>> o.__slot__
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'object' object has no attribute '__slot__'
> >>> class O(object): pass
> >>> o = O()
> >>> o.foo = 7
>
> That object is kind of "pure virtual" seems to me to be a confusing
> special case without any advantages.
>
> Why can't object be instantiated directly? Is that explained and
> documented anywhere?
>

What makes you think it can't be instantiated directly? You just did
it. It's not, however, suitable for use as an arbitrary thing to stick
attributes on.

Which is a little sad, but a necessary requirement for things like
int() and str() to be small and fast.


From jgardner.jonathangardner.net at gmail.com  Thu Oct 25 16:04:23 2007
From: jgardner.jonathangardner.net at gmail.com (Jonathan Gardner)
Date: Thu, 25 Oct 2007 20:04:23 -0000
Subject: "sem_post: Invalid argument"
In-Reply-To: <ffqse9$ci8$1@news.albasani.net>
References: <ffqse9$ci8$1@news.albasani.net>
Message-ID: <1193342663.607436.219500@57g2000hsv.googlegroups.com>

On Oct 25, 12:56 pm, robert <no-s... at not-existing.invalid> wrote:
> On a server the binary (red hat) installed python2.4 and also a
> fresh compiled python2.5 spits "sem_post: Invalid argument".
> What is this and how can this solved?
> ...
> Python 2.4.3 (#1, Jun  6 2006, 21:10:41)
> [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-54)] on linux2
> ...
> server [~]# uname -a
> Linux server 2.4.34.1-p4-smp-bigmem-JWH #1 SMP Mon Mar 19 03:26:57
> JST 2007 i686 i686 i386 GNU/Linux

Are you sure you have compatible binaries? Or did you install a random
RPM without checking for dependencies?



From marcsgbrevkonto at gmail.com  Sun Oct  7 10:41:14 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 14:41:14 -0000
Subject: Newbie packages Q
In-Reply-To: <4708ebfc$0$21561$426a74cc@news.free.fr>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
Message-ID: <1191768074.585609.251570@22g2000hsm.googlegroups.com>

On Oct 7, 4:24 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> MarkyMarc a ?crit :
> (snip)
>
> > And the atest and btest, shouldn't they be able to import each
> > other??
>
> import is a statement. It's executed, like any other top-level code,
> when the module is imported (or the script loaded into the interpreter
> if it's called directly). So if A.py imports B.py and B.py imports A.py,
> you do have a circular reference that can't be solved.
>
> Anyway, circular dependencies are Bad(tm), so you *don't* want such a
> situation.

Yes it is bad and I would not do it in production. But shouldn't I be
able to call one module from another module inside a package?



From paul at boddie.org.uk  Sat Oct  6 09:26:06 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Sat, 06 Oct 2007 06:26:06 -0700
Subject: Cross platform way of finding number of processors on a machine?
In-Reply-To: <1i5k9kn.kxih581ipiy0sN%raims@dot.com>
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<1i5k9kn.kxih581ipiy0sN%raims@dot.com>
Message-ID: <1191677166.962158.50350@k79g2000hse.googlegroups.com>

On 6 Okt, 12:45, ra... at dot.com (Lawrence Oluyede) wrote:
>
> From processing <http://cheeseshop.python.org/pypi/processing/0.34> :

[...]

>             num = os.sysconf('SC_NPROCESSORS_ONLN')

It's interesting what new (or obscure) standard library functions (and
system functions) can be discovered through these kinds of
discussions. However, this one seems to report the number of "virtual
CPUs" in situations like mine where the CPU supports hyperthreading,
as Nicholas Bastin says. One way to get the real number of CPUs (on
Linux-based systems) is to parse /proc/cpuinfo, and to count the
number of distinct "physical id" values.

>From the experiments I've done with pprocess [1], pretending that a
hyperthreading "virtual CPU" is as good as a real CPU (or CPU core)
tends to be counter-productive: the performance benefits in moving
from the utilisation of one to two "virtual CPUs" are virtually non-
existent.

Paul

[1] http://www.python.org/pypi/pprocess



From donn.ingle at gmail.com  Sun Oct 28 06:01:57 2007
From: donn.ingle at gmail.com (Donn Ingle)
Date: Sun, 28 Oct 2007 12:01:57 +0200
Subject: A class question
Message-ID: <fg1mgb$261$1@ger.gmane.org>

Hello,

Is there a way I can, for debugging, access the instance variable name from
within a class?
E.g:
Class X: 
 def debug(self):
  print "My instance var is %s" % (some magic Python stuff)

So that:
>>>x = X()
>>>x.debug()
>>>My Instance var is x

( Without passing the name in like: x=X(name="x") ) 

Thx.
\d



From cjw at sympatico.ca  Tue Oct  2 19:57:31 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Tue, 02 Oct 2007 19:57:31 -0400
Subject: global variables
In-Reply-To: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
References: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
Message-ID: <fdultl$1mu$1@sea.gmane.org>

TheFlyingDutchman wrote:
> Does anyone know how the variables label and scale are recognized
> without a global statement or parameter, in the function resize() in
> this code:
> 
> 
> 
> #!/usr/bin/env python
> 
> from Tkinter import *
> 
> def resize(ev=None):
>       label.config(font='Helvetica -%d bold' % \
>           scale.get())
> 
> 
> top = Tk()
> top.geometry('250x150')
> 
> label = Label(top, text='Hello World!',                <<<<<<
>     font='Helvetica -12 bold')
> label.pack(fill=Y, expand=1)
> 
> scale = Scale(top, from_=10, to=40,                    <<<<
>      orient=HORIZONTAL, command=resize)
> scale.set(12)
> scale.pack(fill=X, expand=1)
> 
> quit = Button(top, text='QUIT',
>     command=top.quit, activeforeground='white',
>     activebackground='red')
> quit.pack()
> 
> mainloop()
> 

label and scale are instances.

Colin W.



From paul at boddie.org.uk  Sun Oct 21 16:07:27 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Sun, 21 Oct 2007 13:07:27 -0700
Subject: using "request" variable in python web program
In-Reply-To: <1192996769.692284.163300@v23g2000prn.googlegroups.com>
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
	<1192924876.257468.27810@v29g2000prd.googlegroups.com>
	<1192996769.692284.163300@v23g2000prn.googlegroups.com>
Message-ID: <1192997247.369705.326060@q5g2000prf.googlegroups.com>

On 21 Okt, 21:59, sami <sami.... at gmail.com> wrote:
>
> Thanks a ton Paul for the information. I am using CGI and my host
> (nearlyfreespeech.net) does not have django hosting - and being mainly
> a C/dekstop apps programmer I really don't want to learn the whole MVC
> concept and its implementation (and quirks) in django - I want to use
> abstractions only when I feel the need for them

See the library reference for information on how to get the value of
form/request parameters from the CGI environment:

http://docs.python.org/lib/node561.html

Paul



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 29 10:26:49 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 29 Oct 2007 14:26:49 -0000
Subject: while within while
References: <mailman.515.1193512303.13605.python-list@python.org>
	<13i88bo9djpu279@corp.supernews.com>
	<mailman.553.1193619733.13605.python-list@python.org>
Message-ID: <13ibrd9m39oua4e@corp.supernews.com>

On Sun, 28 Oct 2007 21:02:02 -0400, Shawn Minisall wrote:

> Thanks a lot for your suggestions.  Unfortunately, a lot of the issues
> brought up were simply the way I was taught by my professor and the way
> she wants things done,having to use a numbered menu as opposed to
> entering r, p or s, being taught just to use one main function for the
> entire program, having to init all variables in the program b4 the
> actual program starts or else points off for each program, while
> statements surrounding every input statement for input validation
> purposes...
> 
> Going beyond those things, would look like someone else wrote my program
> since we didn't talk about or ever cover them in class.

Haven't you heard of "I've been reading ahead from the text book" or 
"I've been reading discussion groups where they talk about good 
programming techniques"?

Besides, you'll probably find your prof will forgive nearly anything if 
you acknowledge it first: plagiarism is considered a worse sin than 
failing to learn anything. Look up this thread on Google Groups, and 
include the URL in your assignment (you might want to give a TinyURL as 
well), and your prof can see for herself that we're not doing your 
homework for you.

(Hey, chances are that she's googling for your name already...)

Unless the assignment explicitly says "DO NOT SPLIT YOUR CODE INTO 
FUNCTIONS", you shouldn't be marked down for writing better code than you 
were asked for.

On the other hand, if the assignment specifies "YOU MUST DO THIS" then 
naturally you must follow the instructions.


* shakes head sadly *

Kids today, more concerned about following instructions than learning...

* half wink * 



-- 
Steven


From drobinow at gmail.com  Wed Oct 17 00:01:20 2007
From: drobinow at gmail.com (drobinow at gmail.com)
Date: Tue, 16 Oct 2007 21:01:20 -0700
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <13hb0ss1oamhr14@corp.supernews.com>
References: <471530E3.9090602@gmail.com>
	<mailman.96.1192573101.13605.python-list@python.org>
	<13hb0ss1oamhr14@corp.supernews.com>
Message-ID: <1192593680.487601.238820@i13g2000prf.googlegroups.com>

On Oct 16, 11:38 pm, Grant Edwards <gra... at visi.com> wrote:
> On 2007-10-16, Robert Kern <robert.k... at gmail.com> wrote:
> > I use GMane to read and post to this list because I like my lists to act like
> > USENET.
> >  http://gmane.org
>
> Since "this list" is just mirroring a Usenet news group,
> wouldn't it be more straight-forward to just use a real Usenet
> news server?
I'm not aware of any real Usenet news server, or how to use one.
So, no, I don't think so.




From sandy.dunlop at gmail.com  Wed Oct 24 15:42:49 2007
From: sandy.dunlop at gmail.com (Sandy Dunlop)
Date: Wed, 24 Oct 2007 20:42:49 +0100
Subject: Socket communication problem
Message-ID: <471FA039.2080206@gmail.com>

Hi,
I'm new here, and fairly new to Python. I have been playing around with
Python and started having a look at socket IO. I have written a script
that communicates over a network to a server which is written in C.
While trying to get this working, I have been running into a problem
where the Python client appears to hang when it should be receiving data
back from the server.

After a few successful exchanges of data, the server sends 3605 bytes to
the client, which the client receives. The server then sends 2 bytes to
the client, and the client doesn't get them. A client program written in
C# does not have this problem.

I have narrowed the problem down as far as I can, and have two small
scripts, client and server, and a data file they read from to know what
they should be sending and receiving. The problem can be replicated
using them within a few milliseconds of running them.

At first, I thought this may be caused by Nagel's algorithm, so I
disabled it explicitly using:

     s.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, 1)

This made no difference.
Can anyone point out what I'm doing wrong here?

You can get the scripts and the 7K data file here:
http://www.sorn.net/~sandyd/python/problem/

Or all together in a zip file here:
http://www.sorn.net/~sandyd/python/problem.zip


Thanks in advance,
Sandy



From dstromberglists at gmail.com  Thu Oct 11 12:58:48 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Thu, 11 Oct 2007 09:58:48 -0700
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
Message-ID: <pan.2007.10.11.16.58.46.689181@gmail.com>

On Thu, 11 Oct 2007 13:46:12 +0000, Marc 'BlackJack' Rintsch wrote:

> On Thu, 11 Oct 2007 13:04:53 +0000, Artur Siekielski wrote:
> 
>> On Oct 11, 2:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>>> But why?  Default getters and setters are unnecessary and if you need
>>> something other than the default you need to write it anyway more
>>> explicitly.
>> 
>> I see some problems with your approach:
>> 
>> 1. If I use instance field 'name' which is accessed directly by other
>> classes,
>> and later I decide to implement nonstandard getter, I must refactor
>> 'Person' class
>> and in some places change 'name' to '_name' (assuming this is now the
>> field's name).
>> The problem is that I cannot automatically change 'name' to '_name'
>> everywhere, because
>> in some places I want public property value (eg. validated and
>> formatted), and in other
>> places raw property value.
> 
> So what?  Otherwise you carry *always* the baggage of a public property
> and a private attribute whether you need this or not.  At least for me it
> would be unnecessary in most cases.

That "baggage" of carrying around "unneeded" methods is something the
computer carries for you - IE, no big deal in 99.99% of all cases.

The "baggage" of possibly fixing (AKA "generalizing") how your attributes
are accessed is something you lug around while your deadline looms.

Here's some code that defines such methods for you:

#!/usr/bin/env python

def gimme_set_get(foo, attribute):
   lst = [ \
      'def set_%s(self, value):' % attribute, \
      '  self._%s = value' % attribute, \
      'def get_%s(self):' % attribute, \
      '  return self._%s' % attribute, \
      'foo.set_%s = set_%s' % (attribute, attribute), \
      'foo.get_%s = get_%s' % (attribute, attribute) \
      ]
   s = '\n'.join(lst)
   code = compile(s, '<string>', 'exec')
   eval(code)

class foo:
   def __init__(self, value):
      self.public_value = value
gimme_set_get(foo, 'via_accessor_method_only')

f = foo(1)
f.set_via_accessor_method_only(1/9.0)
print f.get_via_accessor_method_only()

print dir(f)




From kamen at cybuild.com  Tue Oct  2 05:49:05 2007
From: kamen at cybuild.com (Kamen TOMOV)
Date: Tue, 02 Oct 2007 12:49:05 +0300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <1182093200.598418.218620@e9g2000prf.googlegroups.com>
	<1182272495.990807.99110@a26g2000pre.googlegroups.com>
	<87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga> <87lkao8xgk.fsf@web.de>
Message-ID: <uk5q5dey6.fsf@cybuild.com>

On Sun, Sep 30 2007, Klaus Schilling wrote:

> ...
> private property is unethical

How I craved to read that!

Viva la revolution! 

??? ??????? - ??? ???????,
??? ??????? - ??? ???????!

The End justify the means!

Long live communism! 

-- 
?????


From aahz at pythoncraft.com  Thu Oct 25 20:14:21 2007
From: aahz at pythoncraft.com (Aahz)
Date: 25 Oct 2007 17:14:21 -0700
Subject: stderr is a lame hack?
References: <mailman.148.1192221382.927.python-list@python.org>
Message-ID: <ffrbgt$fi9$1@panix3.panix.com>

In article <mailman.148.1192221382.927.python-list at python.org>,
Erik Jones  <erik at myemma.com> wrote:
>
>So, I was just taking a look at doctest.py and saw this:
>
>    Then running the module as a script will cause the examples in the
>    docstrings to get executed and verified:
>
>    python M.py
>
>    This won't display anything unless an example fails, in which case the
>    failing example(s) and the cause(s) of the failure(s) are printed to
>    stdout (why not stderr? because stderr is a lame hack <0.2 wink>), and
>    the final line of output is "Test failed.".
>
>What does he mean by stderr being a lame hack?

Lessee, I can occasionally channel Guido, maybe I can channel Uncle
Timmy:

First of all, you have to remember that Uncle Timmy is an Evil Windows
abuser.  Things that seem perfectly sane and normal to the rest of us
look like chaos and cruft to him (and vice-versa, of course).

The problem with stderr is that unless you understand it (which is
pretty straightforward to anyone who has drunk the Unix Kool-Aid), you
can get all kinds of unexpected output results, especially under
redirection.  Without redirection, there's no way to differentiate the
combined stdout/stderr stream; contrariwise, if you redirect just stdout
with the intention of recording your test run, you'll be missing the
stderr stream in your log.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

The best way to get information on Usenet is not to ask a question, but
to post the wrong information.


From truthismidway at aim.com  Thu Oct 18 15:55:00 2007
From: truthismidway at aim.com (Sushant)
Date: Thu, 18 Oct 2007 15:55:00 -0400
Subject: Running another python interpreter
In-Reply-To: <4717A261.7090303@hotmail.com>
References: <47179DBA.8040407@hotmail.com> <4717A261.7090303@hotmail.com>
Message-ID: <200710181555.00257.truthismidway@aim.com>

Does gateway.py has the python interpreter in the top (i.e., 
#!/usr/local/bin/python)

-Sushant.
On Thursday 18 October 2007 2:13 pm, Simon Pickles wrote:
> Well, I tried:
>
>     os.spawnv(os.P_NOWAIT, "gateway.py", ())
>
> and got:
>
>     OSError: [Errno 8] Exec format
>
> Simon Pickles wrote:
> > Hello,
> >
> > I have several servers which link to each other (and of course, to
> > clients).
> >
> > At present, I am starting them in turn manually. Is there a way with
> > python to say, "open gateway.py in a new interpreter window"?
> >
> > I looked at execv, etc, but they seem to replace the current process.
> > Ah, maybe I need spawnv().
> >
> > I am on windows i386, python 2.5
> >
> > Thanks
> >
> > si


From smarras at bsc.es  Fri Oct 12 08:56:55 2007
From: smarras at bsc.es (smarras at bsc.es)
Date: Fri, 12 Oct 2007 14:56:55 +0200 (CEST)
Subject: Traceback (most recent call last): PROBLEM
Message-ID: <44673.192.168.6.2.1192193815.squirrel@webmail.bsc.es>

Hello everyone, I keep obtaining an error message whenever I execute some
very simple routines; the error that follows says that I am calling
certain functions that, in reality, I am not calling from any of the
routines that I wrote:

error:

> python fwrite_mat.py

  0, 0, 0, 0 ,  0, 1, 2, 3 ,  0, 2, 4, 6
Traceback (most recent call last):
  File "fwrite_mat.py", line 7, in <module>
    from xlrd import *
  File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/xlrd/__init__.py",
line 256, in <module>
    from timemachine import *
  File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/xlrd/timemachine.py",
line 21, in <module>
    from array import array as array_array
ImportError: cannot import name array

In these lines that I pasted, for example the "array-looking" string has
nothing to do with my function, nor the import name "timemachine" or the
import name "array".

Can anyone help me understand why python is looking such libraries, and
why it keeps in memory an array that I am not using?

Here also the simple routine I wrote:

import os, sys
import xlrd
from numpy import *
from Numeric import *
from matplotlib import *

book = xlrd.open_workbook("/Users/simone/Desktop/prova.xls")
print "The number of worksheets is", book.nsheets
print "Worksheet name(s):", book.sheet_names()
sh = book.sheet_by_index(0)
print sh.name, sh.nrows, sh.ncols
for i in range(sh.nrows):
	for j in range(sh.ncols):
		print sh.row(i)
		print sh.cell_value(i, j)


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 23 18:21:16 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 24 Oct 2007 00:21:16 +0200
Subject: Lists and Sublists
In-Reply-To: <1193175869.803399.43650@y27g2000pre.googlegroups.com>
References: <1193175869.803399.43650@y27g2000pre.googlegroups.com>
Message-ID: <471e740e$0$20686$426a74cc@news.free.fr>

dineshv a ?crit :
> We have a list of N (>2,000) keywords (of datatype string).  Each of
> the N keywords has associated with it a list of names of varying
> numbers.  For example, keyword(1) will have a list of L1 names
> associated with it, keyword(2) will have a list of L2 names associated
> with it and so on with L1 not equal to L2 etc.  All keywords and names
> are immutable.
> 
> Given a keyword(n) , we want to get hold of the associated list of Ln
> names.
> 
> At anytime, we also want to add keywords to the list of N keywords,
> and to any of the associated Ln lists - both of which will grow to
> very large sizes.
> 
> The data will be read into the Python data structure(s) from disk
> storage.
> 
> I am struggling to work out what is the ideal Python data structure
> for the above.  Any help would be greatly appreciated.

keywords = {}
keywords['python'] = ['fun', 'simple']
keywords['another_p_language'] = ['line noise', 'cryptic'] 
keywords['python'].append('readable')

HTH


From jelleferinga at gmail.com  Wed Oct 31 10:55:49 2007
From: jelleferinga at gmail.com (jelle feringa)
Date: Wed, 31 Oct 2007 15:55:49 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <1193844846.4728a06e52cb8@comuh.uh.cu>
References: <loom.20071031T132748-928@post.gmane.org>
	<1193844846.4728a06e52cb8@comuh.uh.cu>
Message-ID: <37fac3b90710310755y4252c0dai307b083ae4a39daf@mail.gmail.com>

There is a subtle point though.
If the substring is not found '_'.find(' '), will return -1
Semanticly, I was expecting the that if the substring was not found, the
conditional statement would not be found.
However, python evaluates -1 to True, so that is what I do find confusing.
So, I was arguing that '_'.find(' ') might return 0, however that is
obviously ambigious, since 0 might be an index as well.

So, perhaps I should rephrase and ask, why if -1 evaluates to True?
I think that's pretty ugly...

cheers,

-jelle
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/6dd4ce05/attachment.html>

From wizzardx at gmail.com  Sun Oct  7 04:43:32 2007
From: wizzardx at gmail.com (David)
Date: Sun, 7 Oct 2007 10:43:32 +0200
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
In-Reply-To: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
Message-ID: <18c1e6480710070143x5c45733ds2d6e237ff1825901@mail.gmail.com>

On 10/5/07, timw.google <tjandacw at yahoo.com> wrote:
> Hi
>
> I want to write a python script that runs rsync on a given directory
> and host. I build the command line string, but when I try to run
> subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
> os.system(cmd), I get prompted for my login password. I expected this,
> but when I try to give my password, it's echoed back to the terminal
> and the special characters in the password is (I think) getting
> interpreted by the shell (zsh)
>
> I can't ssh w/o supplying a password. That's the way the security is
> set up here.
>
> How do I use python to do this, or do I just have to write a zsh
> script?
>

SSH takes measures to ensure that passwords are typed from a keyboard
(pty) rather than being piped in automatically (stdin).

If SSH public key authentication (see ssh-keygen) doesn't work for
you, then try ssh agent (see, ssh-add), "sshpass", or something like
"empty-expect".

If you use ssh public keys, you can also setup the public key so that
only a specified command can be run, and that the public key can only
be used from a specific host. This is more secure. See this page for
more info: http://troy.jdmz.net/rsync/index.html

Otherwise you may need to do some pty-hackery in python to fool ssh
into thinking it's password is being entered from a keyboard and not a
script. However, you should try public key authentication (with rsync
as the only allowed command) first.

Another method is to setup an ssh service on the server (perhaps in
inetd). One disadvantage of this is that the rsync session (including
rsync login passwords) is not encrypted.


From mpelzsherman at yahoo.com  Wed Oct 24 10:37:56 2007
From: mpelzsherman at yahoo.com (Michael Pelz Sherman)
Date: Wed, 24 Oct 2007 07:37:56 -0700 (PDT)
Subject: escape single and double quotes
In-Reply-To: <op.t0osf1rox6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <873835.21004.qm@web55301.mail.re4.yahoo.com>

Thanks Gabriel. You are correct - this is even documented in the MySQLdb User's Guide (http://mysql-python.sourceforge.net/MySQLdb.html), but it's certainly not intuitive, given how python string interpolation normally works.

Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote: En Tue, 23 Oct 2007 20:50:55 -0300, Michael Pelz Sherman  
 escribi?:

> Leif B. Kristensen wrote:
>
>>>>  SQL = 'INSERT into TEMP data = %s'
>>>>  c.execute(SQL, """ text containing ' and ` and all other stuff we
>>> .  might
>>> .   read from the network""")
>>
>>> Sure, but does this work if you need more than one placeholder?
>
>> Yes it works with more than one placeholder.
>
> Yes, BUT: I have found that all of the placeholders must be STRINGS!
>
> If I try to use other data types (%d, %f, etc.), I get an error:
>
> File "/usr/lib/python2.5/site-packages/MySQLdb/cursors.py", line 149, in  
> execute
>     query = query % db.literal(args)
> TypeError: float argument required
>
> It's not a huge problem to convert my non-string args, but it
> seems like this should be fixed if it's a bug, no?

No. The *MARK* is always %s - but the data may be any type (suitable for  
the database column, of course).
The only purpose of %s is to say "insert parameter here". Other adapters  
use a question mark ? as a parameter placeholder, a lot less confusing, as  
it does not look like string interpolation.

-- 
Gabriel Genellina

-- 
http://mail.python.org/mailman/listinfo/python-list

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071024/95000c3c/attachment.html>

From patrick.waldo at gmail.com  Mon Oct 15 17:08:04 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Mon, 15 Oct 2007 21:08:04 -0000
Subject: Simple Text Processing Help
In-Reply-To: <fevlma$imh$01$2@news.t-online.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
	<fevlma$imh$01$2@news.t-online.com>
Message-ID: <1192482484.987399.112620@k35g2000prh.googlegroups.com>

Wow, thank you all.  All three work. To output correctly I needed to
add:

output.write("\r\n")

This is really a great help!!

Because of my limited Python knowledge, I will need to try to figure
out exactly how they work for future text manipulation and for my own
knowledge.  Could you recommend some resources for this kind of text
manipulation?  Also, I conceptually get it, but would you mind walking
me through

> for tok in tokens:
>         if NR_RE.match(tok) and len(chem) >= 4:
>             chem[2:-1] = [' '.join(chem[2:-1])]
>             yield chem
>             chem = []
>         chem.append(tok)

and

> for key, group in groupby(instream, unicode.isspace):
>         if not key:
>             yield "".join(group)


Thanks again,
Patrick



On Oct 15, 2:16 pm, Peter Otten <__pete... at web.de> wrote:
> patrick.waldo wrote:
> > my sample input file looks like this( not organized,as you see it):
> > 200-720-7        69-93-2
> > kyselina mocov?      C5H4N4O3
>
> > 200-001-8       50-00-0
> > formaldehyd      CH2O
>
> > 200-002-3
> > 50-01-1
> > guanid?nium-chlorid      CH5N3.ClH
>
> Assuming that the records are always separated by blank lines and only the
> third field in a record may contain spaces the following might work:
>
> import codecs
> from itertools import groupby
>
> path = "c:\\text_samples\\chem_1_utf8.txt"
> path2 = "c:\\text_samples\\chem_2.txt"
>
> def fields(s):
>     parts = s.split()
>     return parts[0], parts[1], " ".join(parts[2:-1]), parts[-1]
>
> def records(instream):
>     for key, group in groupby(instream, unicode.isspace):
>         if not key:
>             yield "".join(group)
>
> if __name__ == "__main__":
>     outstream = codecs.open(path2, 'w', 'utf8')
>     for record in records(codecs.open(path, "r", "utf8")):
>         outstream.write("|".join(fields(record)))
>         outstream.write("\n")
>
> Peter




From devraj at gmail.com  Thu Oct 11 01:03:17 2007
From: devraj at gmail.com (Devraj)
Date: Thu, 11 Oct 2007 05:03:17 -0000
Subject: urllib.ProxyHandler HTTPS issues
Message-ID: <1192078997.453819.323390@22g2000hsm.googlegroups.com>

Hi everyone,

I have been reading various documents/posts on the web about handling
proxy options in urllib2. Some of them suggest that urllib2 doesn't
handle HTTPS and others say it does. I have successfully written code
that relays HTTP connections via a proxy but have failed to do the
same for HTTPS connections.

Can anyone confirm if urllib2 can handle HTTPS, also if someone can
spare any code samples it will be much appreciated.

Thank you for your time Python developers :)

---
The code in question is available for download at http://code.google.com/p/gdatacopier/



From dan at telent.net  Wed Oct  3 18:07:32 2007
From: dan at telent.net (dan at telent.net)
Date: Wed, 03 Oct 2007 23:07:32 +0100
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
Message-ID: <47041303$0$13930$fa0fcedb@news.zen.co.uk>

George Neuner wrote:
> Symbolism over substance has become the mantra
> of the young.

"Symbolism: The practice of representing things by means of symbols or 
of attributing symbolic meanings or significance to objects, events, or 
relationships."

One might even suggest that all written language is based on the use of 
words as symbols.

"Substance: (2)
    a. Essential nature; essence.
    b. Gist; heart."

"Mantra: A sacred verbal formula repeated in prayer, meditation, or 
incantation, such as an invocation of a god, a magic spell, or a 
syllable or portion of scripture containing mystical potentialities."

Perhaps the young people you're referring to are not the same young 
people that I know, because I've never even heard of a religion whose 
object of reverence is meta-level analysis of language.

Tell me, do you know what "hyperbole" means?


-dan "or 'rhetorical'"


From ensiferum_ at hotmail.com  Sat Oct 20 13:47:52 2007
From: ensiferum_ at hotmail.com (Sami Vaisanen)
Date: Sat, 20 Oct 2007 20:47:52 +0300
Subject: traceback over C API - still not working...
Message-ID: <pan.2007.10.20.17.47.50.320939@hotmail.com>

This is becoming utterly painful process.... I found out that the return
value from "format_exception" function is NOT a list, i.e. PyList_Check()
fails. PySequence_Check() succeeds but then PySequence_List() gives me
back -1. So wtf?

I must say the API is crap on this part. Im trying to get error
information regarding previous error and if all i get back is another
error indicator, then what am I supposed to do? Recursive error handling?
Sounds like da bomb!

The API should have two levels of error handling. First level should
expose a conventional error code mechanism for checking for bad params
etc. Only if the error code says that there was a python error during
evaluation/compilation should one need to use this mechanism. 

Just my two cents.

Thanks for help.



void get_python_error_info(string& info)
{
    GIL g;
    
    PyObject* type  = NULL;
    PyObject* value = NULL;
    PyObject* trace = NULL;
    PyErr_Fetch(&type, &value, &trace);
    
    py_ref ref_type(type);
    py_ref ref_value(value);
    py_ref ref_trace(trace);
    
    py_ref name(PyString_FromString("traceback"));
    py_ref module(PyImport_Import(name.get()));
    if (!module)
    {
        PyErr_Clear();
        return;
    }
    PyObject* list = NULL;
    if (trace)
    {
        py_ref fun(PyObject_GetAttrString(module.get(), "format_exception"));
        if (fun)
            list = PyObject_CallFunctionObjArgs(type, value, trace, NULL);
        PyErr_Clear();
    }
    else
    {
        py_ref fun(PyObject_GetAttrString(module.get(), "format_exception_only"));
        if (fun)
            list = PyObject_CallFunctionObjArgs(type, value, NULL);
        PyErr_Clear();
    }
    if (list && PySequence_Check(list))
    {
        Py_ssize_t len = PySequence_Size(list);
          
        for (Py_ssize_t i=0; i<len; ++i)
        {
              // bla bla
        }
    }
    Py_XDECREF(list);
    PyErr_Clear();
}





> Hello group,
>
> I'm trying to get the Python exception information (message and  
> traceback)
> stored into a string in my C++ code. However all i get back is the string
> "None".

This is what you get (actually "None\n") when there is no error set.

> All the checks pass and all pointers get a value from the python
> API calls. I've also tried with a different function such as
> PyObject_CallFunctionObjArgs but the result is the same.

Since you already know the three components (type, value, trace), I'd use  
traceback.format_exception instead (and remove the PyErr_Restore call -  
I'm unsure if it works the way you expect it).
In this case you have to pass three arguments, so yes, use  
PyObject_CallFunctionObjArgs (remember the final NULL). Beware:  
format_exception returns a formatted list, not a string. You have to  
concatenate all the elements (either using ''.join or repeteadly calling  
PyString_Concat)

> void get_python_exception(string& message, string& traceback)
> {
>     GIL g;
>    PyObject* type  = NULL;
>     PyObject* value = NULL;
>     PyObject* trace = NULL;
>    PyErr_Fetch(&type, &value, &trace);
>    py_ref ref_type(type);
>     py_ref ref_value(value);
>     py_ref ref_trace(trace);
>    py_ref name(PyString_FromString("traceback"));
>     py_ref module(PyImport_Import(name.get()));
>     if (module)
>     {
>         py_ref fun(PyObject_GetAttrString(module.get(), "format_exc"));
>         if (fun)
>         {
>             PyErr_Restore(type, value, trace);
>             ref_type.release();
>             ref_value.release();
>             ref_trace.release();
>            py_ref ret(PyObject_CallObject(fun.get(), NULL));
>             if (ret && PyString_Check(ret.get()))
>             {
>                 char* str = PyString_AsString(ret.get());
>                 message = str;
>                 traceback = "traceback not available";
>                 return;
>             }
>         }
>     }
>     message   = "message not available";
>     traceback = "traceback not available";
> }




-- 
Gabriel Genellina



From aezell at gmail.com  Tue Oct  9 18:26:05 2007
From: aezell at gmail.com (Alex Ezell)
Date: Tue, 9 Oct 2007 17:26:05 -0500
Subject: SOAPpy and ArrayOfKeyValue
In-Reply-To: <71dd7f400710091113xdc322d2y8e4e0a4b5788892e@mail.gmail.com>
References: <71dd7f400710091113xdc322d2y8e4e0a4b5788892e@mail.gmail.com>
Message-ID: <71dd7f400710091526s8357f53l9afe19f693e10d9d@mail.gmail.com>

It's cool when you solve your own problems. It was as simple as this:

def dictToKeyValue(self, mydict):
        soap_list = []
        for key,value in mydict.items():
            inner = {"key":key,"value":value}
            soap_list.append(inner)
        return soap_list

It's just a list of dictionaries with the actual words "key" and
"value" as keys in the dictionary. I was making it much harder than it
needed to be.

SOAPpy is smart enough to handle the rest. Thanks SOAPpy!

/alex

On 10/9/07, Alex Ezell <aezell at gmail.com> wrote:
> Can anyone offer any assistance as to how to convert a basic python
> dictionary, list, or even tuple into the SOAP type "ArrayOfKeyValue"?
>
> I am currently using SOAPpy, but would be willing to change to ZSI or
> something else if it made this conversion easier.
>
> I have tried with the arrayType and structType methods in
> SOAPpy.Types, yet they don't seem to do what I need. I suspect there
> might not be just a single method call, so, I wrote something like
> this:
>
> def dictToKeyValue(self, mydict):
>         soap_list = []
>         for key,value in mydict.items():
>             inner = []
>             inner.append(SOAPpy.stringType(key,'key'))
>             inner.append(SOAPpy.stringType(value,'value'))
>             soap_list.append(SOAPpy.arrayType(inner))
>         print soap_list
>         return SOAPpy.arrayType(soap_list)
>
> As you can see, it's pretty nasty and doesn't do what I need either. I
> have a client that was written in PHP which I am converting. It uses
> this function (which calls the PEAR SOAP library):
>
> function assocArrayToKeyValue($array) {
>         $soap_array = array();
>         foreach($array as $key=>$value) {
>             $inner = array();
>             $inner[] =& new SOAP_Value('key', 'string', $key);
>             $inner[] =& new SOAP_Value('value', 'string', $value);
>             $soap_array[] =& new SOAP_Value("item",
> "{{$this->wsdl_urn}}KeyValue", $inner);
>         }
>         return $soap_array;
>     }
>
> Unfortunately, I don't really have a way to see exactly what
> $soap_array is so that I could emulate it in my Python code.
>
> Any pointers or suggestions are very much appreciated.
>
> /alex
>


From paul.hankin at gmail.com  Wed Oct 10 16:25:00 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 10 Oct 2007 20:25:00 -0000
Subject: for loop question
In-Reply-To: <mailman.38.1192046903.927.python-list@python.org>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
Message-ID: <1192047900.124690.284890@19g2000hsx.googlegroups.com>

On Oct 10, 9:12 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> > test = u"Hello World"
>
> > for cur,next in test:
> >     print cur,next
>
> > Ideally, this would output:
>
> > 'H', 'e'
> > 'e', 'l'
> > 'l', 'l'
> > 'l', 'o'
> > etc...
>
> > Of course, the for loop above isn't valid at all. I am just giving an
> > example of what I'm trying to accomplish. Anyone know how I can achieve the
> > goal in the example above? Thanks.
>
> A "works-for-me":
>
>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
>  >>> for a,b in pairs:
> ...     print a,b

for a, b in zip(test, test[1:]):
  print a, b

--
Paul Hankin



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 22 08:07:52 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 14:07:52 +0200
Subject: a question about decorator
In-Reply-To: <mailman.310.1193038938.13605.python-list@python.org>
References: <003b01c81476$0b8dd4c0$811ba8c0@kyom>
	<mailman.310.1193038938.13605.python-list@python.org>
Message-ID: <471c9290$0$14475$426a74cc@news.free.fr>

Trent Nelson a ?crit :
(snip (rather convoluted) decorator example)

> When Python first parses your code, every time it runs into '@A', it
> calls A() in order to get the required decorator function.

It's not happening at parsing time, but when the (decorated) def 
statement is executed - that is, *usually* (but not necessarily), when 
the module/script is loaded in the interpreter (either as a the main 
program or thru import).



From theller at ctypes.org  Thu Oct 18 07:43:40 2007
From: theller at ctypes.org (Thomas Heller)
Date: Thu, 18 Oct 2007 13:43:40 +0200
Subject: ANN: magnitude 0.9.2
In-Reply-To: <m2d4vcq0iz.fsf@antares.emea.hpqcorp.net>
References: <m2d4vcq0iz.fsf@antares.emea.hpqcorp.net>
Message-ID: <ff7gtc$l30$1@ger.gmane.org>

Joan M. Garcia schrieb:
> Following the feedback on the first release of magnitude it
> has changed enough to deserve a second release, which
> modifies the API, solves a couple of bugs, and brings it in
> line with python's style guide.  Main changes:
> 
> * imul, idiv had wrong output unit, so that after a /= b
>   printing showed wrong units. 
> 
> * mod's output has the units of the division. 
> 
> * outputPrecission, defaultFormat and outputUnits are now
>   output_precision, default_format and output_units.
> 
> 
> Magnitude:
> 
> A physical quantity is a number with a unit, like 10
> km/h. Units can be any of the SI units, plus a bunch of
> non-SI, bits, dollars, and any combination of them. They can
> include the standard SI prefixes. Magnitude can operate with
> physical quantities, parse their units, and print them. You
> don't have to worry about unit consistency or conversions;
> everything is handled transparently. By default output is
> done in basic SI units, but you can specify any output unit,
> as long as it can be reduced to the basic units of the
> phisical quantity.
> 
> Home page: http://juanreyero.com/magnitude/ 

Three comments, from looking at it:

- "physical", not "phisical" ;-)

- you raise string exceptions in various places; these are deprecated and
  should not be used.  Also it is very difficult to catch them.

- ScientificPython from Konrad Hinsen also contains a somewhat similar
  module.  IIRC, it is named PhysicalQuantities.  You might look into that
  and mention it on the homepage.

Thomas



From e0427417 at student.tuwien.ac.at  Sun Oct  7 10:51:33 2007
From: e0427417 at student.tuwien.ac.at (Mathias Panzenboeck)
Date: Sun, 07 Oct 2007 16:51:33 +0200
Subject: weakrefs and bound methods
Message-ID: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>

Hi.

I have a problem with weak refs and bound methods. The best explanation for the
problem is a short bit of code. I have the three classes Wrapper, Foo and Bar:

import weakref

class Wrapper(object):
	def __init__(self,x):
		self.x = weakref.ref(x)

	def __call__(self,*args,**kwargs):
		x = self.x()
		if x is None:
			print "lost reference"
		else:
			return x(*args,**kwargs)

class Foo(object):
	def __init__(self):
		self._methods = set()
		self._methods.add(Wrapper(self._foo))

	def _foo(self):
		print "_foo"

	def callMethods(self):
		for method in self._methods:
			method()

	def __del__(self):
		print "del Foo"

class Bar(object):
	def __init__(self):
		self._methods = set()
		self._methods.add(self._foo)

	def _foo(self):
		print "_foo"

	def callMethods(self):
		for method in self._methods:
			method()

	def __del__(self):
		print "del Bar"



Now look what happens when I do this:

>>> f=Foo()
>>> f.callMethods()
lost reference
>>> del f
del Foo
>>> b=Bar()
>>> b.callMethods()
_foo
>>> del b
>>>

Foo looses the reference to its method but Bar on the other hand has a refloop and
never gets deleted.

Does anyone know what happens here? How can I write such classes without refloop and
without lost reference?

I'm using:
Python 2.5.1 (r251:54863, May  2 2007, 16:56:35)
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2

	-panzi


From john_nowlan at carleton.ca  Fri Oct 26 13:35:59 2007
From: john_nowlan at carleton.ca (owl)
Date: Fri, 26 Oct 2007 10:35:59 -0700
Subject: how to/help  installing impure packages
Message-ID: <1193420159.513950.177000@y27g2000pre.googlegroups.com>

I love easy_install.

I love watching it search and complete.
It's when it doesn't complete that causes me grief.
I don't program a lot these days and am relatively new to python but I
often wind up installing packages on both unix and windows machines
and often the 'build' part of the install fails with not being able to
find the compiler or compile problems.

If there are any articles/pointers that talk about this, i.e. how to
troubleshoot, I'd love to know.

If I was writing such an article I'd start with:
- how easy_install uses distutils (even this is an assumption on my
part)
- where it looks in the env. for stuff on both unix/linux/windows
- what files to tweak to help it find stuff if your env. is different.
- i.e. can I config some file to have packages not try and compile but
use pure python if possible?
- i.e. w/o speedups
- how to work around problems such as easy_install failing because a
site is down
- i.e. how to manually download, 'unpack' & 'build'
- since packages fail to build, how to set things up to download &
keep things around when they fail so you can tinker with it until you
get it working!

I love python, and nothing against impure packages, but when they
cause problems it starts to 'tarnish the dream' of an agnostic
language.

Thoughts?



From bj_666 at gmx.net  Tue Oct 23 06:10:58 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 10:10:58 GMT
Subject: How to implement function like this?
References: <ffkba5$1u6$1@wake.carmen.se> <5o5sqtFld8c9U3@mid.uni-berlin.de>
	<471dc352$0$5091$ba4acef3@news.orange.fr>
Message-ID: <5o5vliFld8c9U4@mid.uni-berlin.de>

On Tue, 23 Oct 2007 11:48:08 +0200, Loic Mahe wrote:

> even shorter:
> 
> def funcA(tarray):
>      s = min(len(tarray), 3)
>      return [2, 3, 4][0:s] + [e for e in funcB(3-s)[0:3-s]]

Why the list comprehension!?

Ciao,
	Marc 'Blackjack' Rintsch


From istvan.albert at gmail.com  Sun Oct  7 11:31:36 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Sun, 07 Oct 2007 15:31:36 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
Message-ID: <1191771096.541915.247650@k79g2000hse.googlegroups.com>


IMO this is not as much a framework comparison rather than an
evaluation of the individual components that make up Pylons.

The framework is the sum of all its parts. Programmers should not need
to know that that a package named Beaker is used for sessions, Routes
for url mapping, PasteDeploy for whatever. This is the weakness of all
glue-type frameworks i.e. TG and Pylons. It makes them look like they
are duct-taped together.

The more important question are whether the sessions actually work
properly: i.e does session data persist through a server restart?
Where is the session data stored: in memory, files, database and so
on.

The choice of templating language should be a non issue. Any half
decent framework should allow you to use any other templating engine
with ease.
... even python as you seem to prefer

i.






From bignose+hates-spam at benfinney.id.au  Tue Oct 16 04:10:54 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 18:10:54 +1000
Subject: confused on calculating date difference in days.
References: <mailman.49.1192518819.13605.python-list@python.org>
	<5nj8b8FiilfrU3@mid.uni-berlin.de>
Message-ID: <87odez4gz5.fsf@benfinney.id.au>

Marc 'BlackJack' Rintsch <bj_666 at gmx.net> writes:

> On Tue, 16 Oct 2007 12:33:33 +0530, krishnakant Mane wrote:
> 
> > firstly, I can't get a way to convert a string like "1/2/2005" in
> > a genuan date object which is needed for calculation.
> 
> Why?  Split the string up, convert the parts to `int` and just
> create a `datetime.date` object.

What, re-implement 'strptime' in every program that needs it? And then
debug the result every time?

Even if one doesn't have Python 2.5 or above, surely getting the
string parsed into int values by the standard 'time.strptime' is
better than re-implementing it every time.

> Maybe you should read the docs next time.  ;-)

Back at you.

-- 
 \           "If you do not trust the source do not use this program." |
  `\                                ?Microsoft Vista security dialogue |
_o__)                                                                  |
Ben Finney


From matthieu.brucher at gmail.com  Mon Oct 15 17:05:20 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Mon, 15 Oct 2007 23:05:20 +0200
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <4713D47B.2070600@ulmcnett.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>
	<4713D47B.2070600@ulmcnett.com>
Message-ID: <e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>

>
> Are you aware that you can do an in-memory database (IOW no file at all)?
>
> cur = sqlite.connect(":memory:")
>

Yes, but in this case, how can I use the DB that I downloaded from the net ?
If this is the way of using sqlite, it is still cumbersome as a lot of other
classes that work on files can work on file-like (and isn't it the whole
point of Python ;) ?

Thank you for your fast answer

Matthieu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071015/d3718e8f/attachment.html>

From jusa.sj at gmail.com  Sat Oct 13 09:13:21 2007
From: jusa.sj at gmail.com (Juha S.)
Date: Sat, 13 Oct 2007 16:13:21 +0300
Subject: Foreign Character Problems In Python 2.5 and Tkinter
In-Reply-To: <pan.2007.10.13.12.25.41.721728@luukku.com>
References: <mailman.160.1192262504.927.python-list@python.org>
	<pan.2007.10.13.12.25.41.721728@luukku.com>
Message-ID: <4710C471.1040100@gmail.com>

Thanks for the reply. I made changes to my code according to your 
example. Now any Scandinavian characters that are outputted by the 
program are missing in the Tk text box.

I'm using a loading function like this to load the data that is to be 
outputted by the program:

def loadWords(self, filename):
        ret = []
       
        try:
            file = codecs.open(filename, 'r', 'utf-8', 'ignore')
            for line in file:
                if line.isspace() == False: #Must skip blank lines (read 
only lines that contain text).
                    line = line.replace(u'\n', u'')
                    ret.append(line)
        except IOError:
            tkMessageBox.showwarning(u'Open File', u'An error occurred 
wile trying to load \"' + filename + u'\"', parent=self.frame)
        finally:
            file.close()
       
        return ret


Also, the newlines are still lost when saving the text widget contents 
to a file. I'm inserting the program generated text to the text widget 
through "text.insert(END, txt + u'\n\n')".


Janne Tuukkanen wrote:
> Juha S. kirjoitti:
>   
>> problem is that when I try to save its contents to a .txt file, any 
>> Scandinavian letters such as "??? ???" are saved incorrectly and show up 
>> as a mess when I open the .txt file in Windows Notepad.
>>
>> It seems that the characters will only get mixed if the user has typed 
>> them into the widget, but if the program has outputted them, they are 
>> saved correctly.
>>     
>
>  Did you define the encoding for the source file and
> put u (for unicode) in front of your strings. The
> following piece produces proper UTF-8. Couldn't test with
> Notepad though, no Windows here.
>
>  Note this message is also encoded in UTF-8, so should be
> your editor. I can't believe we are still messing with this
> stuff in 2007. In old bad days it was easy, you should
> only learn to read { as ?, | as ? etc... and vice versa
> with localized terminals -- C code looked rather exotic
> with a-umlauts everywhere ;)
>
>
> #!/usr/bin/python
> # -*- coding: utf-8 -*-
>
> from Tkinter import *
> import codecs
>
> class Application(Frame):
>     def save(self):
>         FILE = codecs.open("outfile.txt", "w", "utf-8")
>         FILE.write(u"START - ??????\n")
>         FILE.write(self.text_field.get(0.0, END))
>         FILE.write(u"END - ??????\n")
>         FILE.close()
>         self.quit()
>         
>     def __init__(self, master=None):
>         Frame.__init__(self, master)
>         self.grid()
>
>         self.text_field = Text(self, width=40, height=10)
>         self.text_field.grid()
>         
>         self.save_button = Button(self, text="save and exit", command=self.save)
>         self.save_button.grid()
>         
> if __name__ == "__main__":
>     app = Application()
>     app.mainloop()
>
>   



From martin at v.loewis.de  Thu Oct 25 00:10:06 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 25 Oct 2007 06:10:06 +0200
Subject: Test for a unicode string
In-Reply-To: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
References: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
Message-ID: <4720171e$0$4067$9b622d9e@news.freenet.de>

> I have a regular expression test in a script. When a unicode character
> get tested in the regex it gives an error:
> 
> UnicodeError: ASCII decoding error: ordinal not in range(128)
> 
> Question: Is there a way to test a string for unicode chars (ie. test
> if a string will throw the error cited above).
> 
> Like:
>  if  unicode string:
>       print  'string's line #'
>  else:
>       process the string

Sure:

try:
    s.decode("ascii")
except UnicodeError:
    print 'string's line #'
else:
    process the string

Notice that you get a *decoding* error, so you are not testing
Unicode characters, but byte strings.

HTH,
Martin


From jason.dusek at gmail.com  Thu Oct 11 21:37:15 2007
From: jason.dusek at gmail.com (jsnx)
Date: Fri, 12 Oct 2007 01:37:15 -0000
Subject: the secret life of zombies
Message-ID: <1192153035.345531.99620@q5g2000prf.googlegroups.com>

I'd like a program, call it 'pipe-fitter', that connects and
interactive app
to three named pipes. The program will filter out EOF from the input
pipe, to
keep the interactive program alive for multiple commands. When the
interactive
app dies, by receiving 'exit', say, then we are done with it -- pipe-
fitter
bails out.

I've tried writing pipe-fitter in the shell (infinite loop), C (could
not get
off the ground at all with this one) and now Python. After trying a
few
different approaches, I was turned on to the subprocess module by
someone on
IRC. My program is almost right, except for damn zombies. Here is pipe-
fitter:

    https://svn.j-s-n.org/public/i-can-has-root/python/pipe-fitter.py

Say we make some fifos in a dir 'pipes'

  mkdir pipes
  mkfifo pipes/i pipes/o pipes/e

Now we call pipe-fitter thusly:

  pipe-fitter.py -d pipes sh -xv

This runs `sh -xv` with stdin, stdout and stderr connected to pipes/i,
pipes/o
and pipes/e respectively. We open three new terminals. In the first
one, we
put:

  echo "ls -l" > pipes/i

and in the second:

  cat pipes/o

and in the third:

  cat pipes/e

Once we enter the final command, the 'echo' returns and the text comes
streaming out in the 2nd and 3rd terminals. Wonderful. Now, let's try
`exit`.

  echo 'exit' > pipes/i

As expected, cat will terminate in the 2nd and 3rd terminals, with the
3rd
terminal displayin:

  + exit
  exit

However, pipe-fitter.py is still running. Why is that? It did not
'poll' at
the right time, it seems. If I try stuffing more input into pipes/i, I
get

  IOError: [Errno 32] Broken pipe

and pipe-fitter.py finally quits. Not exactly what I was hoping for.

Prowling around with PS, I find that the `sh -xv` called from within
pipe-fitter is a zombie for a spell; if pipe-fitter fails to catch it
at the
right time, there is no avoiding the IOError. I'm using
subprocess.Popen.poll() in a loop, to catch the process's termination
-- is
there something else I should be doing?



From paul.hankin at gmail.com  Tue Oct  2 17:23:24 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Tue, 02 Oct 2007 21:23:24 -0000
Subject: List Question
In-Reply-To: <1191360038.845477.170160@22g2000hsm.googlegroups.com>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
	<1191360038.845477.170160@22g2000hsm.googlegroups.com>
Message-ID: <1191360204.652447.207190@n39g2000hsh.googlegroups.com>

On Oct 2, 10:20 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 2, 10:06 pm, brad <byte8b... at gmail.com> wrote:
>
> > How is this expressed in Python?
>
> > If x is in y more than three times:
> >      print x
>
> > y is a Python list.
>
> Simple and readable:
> if len([a for a in y if x == a]) > 3:
>     print x
>
> Or the slightly-too-flashy version:
> if sum(1 for a in y if x == a) > 3:
>     print x

Or the embarrassingly simple:

if y.count(x) > 3:
    print x

--
Paul Hankin



From michele.simionato at gmail.com  Sun Oct  7 12:38:23 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sun, 07 Oct 2007 16:38:23 -0000
Subject: weakrefs and bound methods
In-Reply-To: <5msflnFepbdqU1@mid.uni-berlin.de>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
Message-ID: <1191775103.234809.311870@o80g2000hse.googlegroups.com>

On Oct 7, 12:26 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:

> Drop all those `__del__()` methods as they prevent the garbage collector
> from collecting "cycles".

I fully agree and I will add that __del__ methods are always
a bad idea. Also notice that recently Raymond Hetting said in
this list that he wanted to submit a PEP to remove __del__ from
Python 3000 (I don't know if this will ever happen tough).

   Michele Simionato



From arkanes at gmail.com  Thu Oct 25 17:30:06 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 25 Oct 2007 16:30:06 -0500
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <4721071f$0$12108$426a74cc@news.free.fr>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
	<4720c5c3$0$20084$426a74cc@news.free.fr>
	<1193338993.100383.191300@o80g2000hse.googlegroups.com>
	<4721071f$0$12108$426a74cc@news.free.fr>
Message-ID: <1193347807.11109.3.camel@balamos>


On Thu, 2007-10-25 at 23:13 +0200, Bruno Desthuilliers wrote:
<snip excellent breakdown>

> > The logical next question then is how does one best add a new method
> > to this class so that future references to x.set_x() and X.set_x will
> > properly resolve?  It seems the answer would be to somehow add to
> > X.__dict__ a new value, with key 'set_x', value the function set_x.
> 
> Yes. Which is very simply done by just binding set_x to X.set_x. Just 
> like I did above. Dynamically adding methods to classes is pretty 
> straightforward, the tricky point is to dynamically add methods to 
> instances, since the descriptor protocol is only triggered for class 
> attributes. But you obviously found how to do it using func.__get__(obj, 
> type(obj)) !-)
> 

This is the greasy, getting your hands dirty way. I vastly prefer (and
reccomend) using the new module:

>>> import new
>>> class X(object):
...     pass
...     
>>> def bar(self):
...     print self
...     
>>> x = X()
>>> x.bar = new.instancemethod(bar, x, X)
>>> x.bar()
<__main__.X object at 0x87dca0c>
>>> 



> >>From there on the . operator I assume would perform the binding to X
> > or x as needed on-the-fly.
> 
> Yes.
> 
> NB: please some guru around correct me if I said something wrong (Alex ? 
> Tim ? Fredrick ? If you hear me ?)



From ptmcg at austin.rr.com  Mon Oct 29 08:45:26 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Mon, 29 Oct 2007 05:45:26 -0700
Subject: Help with pyparsing and dealing with null values
In-Reply-To: <l8uai3pu2cveg2p7tljm5vs7rit6eeglv8@4ax.com>
References: <l8uai3pu2cveg2p7tljm5vs7rit6eeglv8@4ax.com>
Message-ID: <1193661926.538121.216970@o80g2000hse.googlegroups.com>

On Oct 29, 1:11 am, avidfan <no... at nowhere.com> wrote:
> Help with pyparsing and dealing with null values
>
> I am trying to parse a log file (web.out) similar to this:
>
> -----------------------------------------------------------
>
> MBeanName: "mtg-model:Name=mtg-model_managed2,Type=Server"
>         AcceptBacklog: 50
<snip>
>         ExpectedToRun: false
>         ExternalDNSName:
>         ExtraEjbcOptions:
>         ExtraRmicOptions:
>         GracefulShutdownTimeout: 0
>
> -----------------------------------------------------------
>
> and I need the indented values (eventually) in a dictionary.  As you
> can see, some of the fields have a value, and some do not.  It appears
> that the code I have so far is not dealing with the null values and
> colons as I had planned.
>

This is a very good first cut at the problem.  Here are some tips to
get you going again:

1. Literal("\n") wont work, use LineEnd() instead.  Literals are for
non-whitespace literal strings.


2. "all = SkipTo(end)" can be removed, use restOfLine instead of all.
("all" as a variable name masks Python 2.5's "all" builtin function.)


3. In addition to identity, you might consider defining some other
known value types:

boolean = oneOf("true false")
boolean.setParseAction(lambda toks: toks[0]=="true")

integer = Combine(Optional("-") + Word(nums))
integer.setParseAction(lambda toks: int(toks[0]))

These will do data conversion for you at parse time, so that the
values are already in int or bool form when you access them later.


4. The significant change is to this line (I've replaced all with
restOfLine):

pairs = Group(identity + colon + Optional(identity) + restOfLine)

What gives us a problem is that pyparsing's whitespace-skipping will
read an identity, even if it's not on the same line.  So for keys that
have no value given, you end up reading past the end-of-line and read
the next key name as the value for the previous key.  To work around
this, define the value as something which must be on the same line,
using the NotAny lookahead, which you can abbreviate using the ~
operator.

pairs = Group(identity + colon + Optional(~end + (identity |
restOfLine) ) + end )

If we add in the other known value types, this gets a bit unwieldy, so
I recommend you define value separately:

value = boolean | integer | identity | restOfLine
pairs = Group(identity + colon + Optional(~end + value) + end )

At this point, I think you have a working parser for your log data.


5. (Extra Credit) Lastly, to create a dictionary, you are all set to
just add pyparsing's Dict class.  Change:

logEntry = MBeanName + ServerName("servername") + OneOrMore(pairs)

to:

logEntry = MBeanName + ServerName("servername") +
Dict(OneOrMore(pairs))

(I've also removed ".setResultsName", using the new shortened form for
setting results names.)

Dict will return the parsed tokens as-is, but it will also define
results names using the tokens[0] element of each list of tokens
returned by pairs - the values will be the tokens[1:], so that if a
value expression contains multiple tokens, they all will be associated
with the results name key.

Now you can replace the results listing code with:

    for t in tokens:
       print t

with

    print tokens.dump()

And you can access the tokens as if they are a dict, using:

    print tokens.keys()
    print tokens.values()
    print tokens["ClasspathServletDisabled"]

If you prefer, for keys that are valid Python identifiers (all of
yours appear to be), you can just use object.attribute notation:

    print tokens.ClasspathServletDisabled

Here is some sample output, using dump(), keys(), and attribute
lookup:

tokens.dump() -> ['MBeanName:', '"mtg-model:Name=mtg-
model_managed2,Type=Server"', ['AcceptBacklog', 50],
['AdministrationPort', 0], ['AutoKillIfFailed', False],
['AutoRestart', True], ['COM', 'mtg-model_managed2'], ['COMEnabled',
False], ['CachingDisabled', True], ['ClasspathServletDisabled',
False], ['ClientCertProxyEnabled', False], ['Cluster', 'mtg-model-
cluster'], ['ClusterRuntime', 'mtg-model-cluster'], ['ClusterWeight',
100], ['CompleteCOMMessageTimeout', -1],
['CompleteHTTPMessageTimeout', -1], ['CompleteIIOPMessageTimeout',
-1], ['CompleteMessageTimeout', 60], ['CompleteT3MessageTimeout', -1],
['CustomIdentityKeyStoreFileName'],
['CustomIdentityKeyStorePassPhrase'],
['CustomIdentityKeyStorePassPhraseEncrypted'],
['CustomIdentityKeyStoreType'], ['CustomTrustKeyStoreFileName'],
['CustomTrustKeyStorePassPhrase'],
['CustomTrustKeyStorePassPhraseEncrypted'],
['CustomTrustKeyStoreType'], ['DefaultIIOPPassword'],
['DefaultIIOPPasswordEncrypted'], ['DefaultIIOPUser'],
['DefaultInternalServletsDisabled', False], ['DefaultProtocol', 't3'],
['DefaultSecureProtocol', 't3s'], ['DefaultTGIOPPassword'],
['DefaultTGIOPPasswordEncrypted', ' ****** '], ['DefaultTGIOPUser',
'guest'], ['DomainLogFilter'], ['EnabledForDomainLog', True],
['ExecuteQueues', 'weblogic.kernel.Default,foglight'],
['ExpectedToRun', False], ['ExternalDNSName'], ['ExtraEjbcOptions'],
['ExtraRmicOptions'], ['GracefulShutdownTimeout', 0]]
- AcceptBacklog: 50
- AdministrationPort: 0
- AutoKillIfFailed: False
- AutoRestart: True
- COM: mtg-model_managed2
- COMEnabled: False
- CachingDisabled: True
- ClasspathServletDisabled: False
- ClientCertProxyEnabled: False
- Cluster: mtg-model-cluster
- ClusterRuntime: mtg-model-cluster
- ClusterWeight: 100
- CompleteCOMMessageTimeout: -1
- CompleteHTTPMessageTimeout: -1
- CompleteIIOPMessageTimeout: -1
- CompleteMessageTimeout: 60
- CompleteT3MessageTimeout: -1
- CustomIdentityKeyStoreFileName:
- CustomIdentityKeyStorePassPhrase:
- CustomIdentityKeyStorePassPhraseEncrypted:
- CustomIdentityKeyStoreType:
- CustomTrustKeyStoreFileName:
- CustomTrustKeyStorePassPhrase:
- CustomTrustKeyStorePassPhraseEncrypted:
- CustomTrustKeyStoreType:
- DefaultIIOPPassword:
- DefaultIIOPPasswordEncrypted:
- DefaultIIOPUser:
- DefaultInternalServletsDisabled: False
- DefaultProtocol: t3
- DefaultSecureProtocol: t3s
- DefaultTGIOPPassword:
- DefaultTGIOPPasswordEncrypted:  ******
- DefaultTGIOPUser: guest
- DomainLogFilter:
- EnabledForDomainLog: True
- ExecuteQueues: weblogic.kernel.Default,foglight
- ExpectedToRun: False
- ExternalDNSName:
- ExtraEjbcOptions:
- ExtraRmicOptions:
- GracefulShutdownTimeout: 0
- servername: "mtg-model:Name=mtg-model_managed2,Type=Server"

tokens.keys() -> ['ClasspathServletDisabled', 'servername',
'ExternalDNSName', 'CustomTrustKeyStoreFileName', 'DefaultIIOPUser',
'ExpectedToRun', 'CachingDisabled', 'CompleteHTTPMessageTimeout',
'CompleteIIOPMessageTimeout', 'AutoKillIfFailed',
'ClientCertProxyEnabled', 'ExtraEjbcOptions',
'CustomTrustKeyStorePassPhraseEncrypted', 'COM',
'CompleteMessageTimeout', 'CustomIdentityKeyStoreType',
'CustomTrustKeyStoreType', 'EnabledForDomainLog', 'AutoRestart',
'DefaultTGIOPPasswordEncrypted', 'CompleteCOMMessageTimeout',
'DefaultInternalServletsDisabled', 'DefaultProtocol', 'ClusterWeight',
'ExecuteQueues', 'ExtraRmicOptions', 'CompleteT3MessageTimeout',
'DefaultTGIOPUser', 'AcceptBacklog', 'DefaultIIOPPassword',
'DefaultSecureProtocol', 'COMEnabled',
'CustomIdentityKeyStoreFileName', 'DefaultTGIOPPassword',
'CustomIdentityKeyStorePassPhraseEncrypted',
'GracefulShutdownTimeout', 'DefaultIIOPPasswordEncrypted',
'CustomIdentityKeyStorePassPhrase', 'ClusterRuntime', 'Cluster',
'DomainLogFilter', 'CustomTrustKeyStorePassPhrase',
'AdministrationPort']

tokens.ClasspathServletDisabled -> False


Cheers,
-- Paul




From sandip.more at gmail.com  Wed Oct 24 23:40:12 2007
From: sandip.more at gmail.com (sandipm)
Date: Wed, 24 Oct 2007 20:40:12 -0700
Subject: Anagrams
In-Reply-To: <mailman.419.1193243258.13605.python-list@python.org>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
	<1193185723.647144.302410@i13g2000prf.googlegroups.com>
	<1193241800.343932.23170@k35g2000prh.googlegroups.com>
	<1193242608.953442.217400@q3g2000prf.googlegroups.com>
	<mailman.419.1193243258.13605.python-list@python.org>
Message-ID: <1193283612.186789.41350@i38g2000prf.googlegroups.com>

thanks..I  am using python 2.4.4. so i couldnt find "all" either as
inbuilt module
or by doing "from itertools import *",  "all" is not available.
I think I need to move to 2.5 then....

but what are the pros/cons of moving to 2.5? as we are using 2.4.4 on
production server which is quite stable.
any good pointers?

sandip




On Oct 24, 9:32 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> >>  Is "all" inbuilt function in python? what it does?
>
> >>>> help(all)
> > Help on built-in function all in module __builtin__:
>
> > all(...)
> >     all(iterable) -> bool
>
> >     Return True if bool(x) is True for all values x in the iterable.
>
> It may be helpful to know that any() and all() were added in
> Python 2.5
>
> http://docs.python.org/lib/built-in-funcs.html#l2h-9
>
> -tkc




From patrick.waldo at gmail.com  Sun Oct 21 12:35:43 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Sun, 21 Oct 2007 16:35:43 -0000
Subject: Problem Converting Word to UTF8 Text File
Message-ID: <1192984543.240902.3790@t8g2000prg.googlegroups.com>

Hi all,

I'm trying to copy a bunch of microsoft word documents that have
unicode characters into utf-8 text files.  Everything works fine at
the beginning.  The word documents get converted and new utf-8 text
files with the same name get created.  And then I try to copy the data
and I keep on getting "TypeError: coercing to Unicode: need string or
buffer, instance found".  I'm probably copying the word document
wrong.  What can I do?

Thanks,
Patrick


import os, codecs, glob, shutil, win32com.client
from win32com.client import Dispatch

input = 'C:\\text_samples\\source\\*.doc'
output_dir = 'C:\\text_samples\\source\\output'
FileFormat=win32com.client.constants.wdFormatText

for doc in glob.glob(input):
    doc_copy = shutil.copy(doc,output_dir)
    WordApp = Dispatch("Word.Application")
    WordApp.Visible = 1
    WordApp.Documents.Open(doc)
    WordApp.ActiveDocument.SaveAs(doc, FileFormat)
WordApp.ActiveDocument.Close()
WordApp.Quit()


for doc in glob.glob(input):
    txt_split = os.path.splitext(doc)
    txt_doc = txt_split[0] + '.txt'
    txt_doc = codecs.open(txt_doc,'w','utf-8')
    shutil.copyfile(doc,txt_doc)



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 07:33:36 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 12:33:36 +0100
Subject: A class question
In-Reply-To: <87ejfe457k.fsf@mulj.homelinux.net>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
Message-ID: <4725c510$0$4627$426a74cc@news.free.fr>

Hrvoje Niksic a ?crit :
> Donn Ingle <donn.ingle at gmail.com> writes:
> 
>> Is there a way I can, for debugging, access the instance variable name from
>> within a class?
>> E.g:
>> Class X: 
>>  def debug(self):
>>   print "My instance var is %s" % (some magic Python stuff)
> 
> As others have answered, an instance can live in many variables,

"be bound to many names" would be more accurate IMHO. Python's 
"variables" are name=>object bindings.



From marcsgbrevkonto at gmail.com  Sun Oct  7 11:35:48 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 15:35:48 -0000
Subject: Newbie packages Q
In-Reply-To: <4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1191771348.165051.36790@50g2000hsm.googlegroups.com>

On Oct 7, 5:22 pm, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> MarkyMarc wrote:
> > On Oct 7, 4:24 pm, Bruno Desthuilliers <bruno.
> > 42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> >> MarkyMarc a ?crit :
> >> import is a statement. It's executed, like any other top-level code,
> >> when the module is imported (or the script loaded into the interpreter
> >> if it's called directly). So if A.py imports B.py and B.py imports A.py,
> >> you do have a circular reference that can't be solved.
>
> >> Anyway, circular dependencies are Bad(tm), so you *don't* want such a
> >> situation.
>
> > Yes it is bad and I would not do it in production. But shouldn't I be
> > able to call one module from another module inside a package?
>
> Thats not the point. Intra-package references are (of course) perfectly
> possible, the problem here are *circular* references (as Bruno explained).
>
> Secondly, if you have such circular dependencies, I would argue that
> your package design might need a little reconsideration. Why do 2
> seperate modules need *each other*? To me that sounds like 2 modules
> begging to be combined.
>
> /W

It was simply to make a point. But then lets say the to files looks
like this:

 *******************************
atest.py:

def printA():
        print "This is Atest from Apack"
*******************************
btest.py:
from Test.apack import atest

def printB():
        print "This is Btest from Bpack"

def printatest():
        print atest.printA()

print printB()
print printatest()
*******************************

Now only one of them imports the other, and this most be the simplest
way of illustrating the intra-package references.
But how do I get this to work?



From DustanGroups at gmail.com  Wed Oct 31 18:49:28 2007
From: DustanGroups at gmail.com (Dustan)
Date: Wed, 31 Oct 2007 22:49:28 -0000
Subject: setting variables in outer functions
In-Reply-To: <Xns99DA7B469B79Fduncanbooth@127.0.0.1>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
	<Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
	<1193830119.542006.137750@o38g2000hse.googlegroups.com>
	<Xns99DA7B469B79Fduncanbooth@127.0.0.1>
Message-ID: <1193870968.747606.281180@50g2000hsm.googlegroups.com>

On Oct 31, 7:08 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Dustan <DustanGro... at gmail.com> wrote:
> > On Oct 30, 11:29 am, Duncan Booth <duncan.bo... at invalid.invalid>
> > wrote:
> >> Neil Cerutti <horp... at yahoo.com> wrote:
> >> > It's allows a standard programming idiom which provides a
> >> > primitive form of object oriented programming using closures to
> >> > represent state.
>
> >> > def account(opening_balance):
> >> >   balance = opening_balance
> >> >   def get_balance():
> >> >     nonlocal balance
> >> >     return balance
> >> >   def post_transaction(x):
> >> >     nonlocal balance
> >> >     balance += x
> >> >   return balance, post_transaction
>
> >> > fred_balance, fred_post = account(1500)
> >> > joe_balance, joe_post = account(12)
> >> > fred_post(20)
> >> > joe_post(-10)
> >> > fred_balance()
>
> >> TypeError: 'int' object is not callable
>
> >> > 1520
> >> > joe_balance()
>
> >> TypeError: 'int' object is not callable
>
> >> > 2
>
> >> > Python classes will of course nearly always win, though the idiom
> >> > looks like it might be faster (I don't have Python 3000 to try it
> >> > out).
>
> >> Python classes might be less error prone.
>
> > Why would using classes make your code any less prone to typographical
> > errors?
>
> Lots of reasons: shorter and clearer code being high on the list.

It wouldn't be necessarily shorter, depending on what you're working
with. Clearer is a matter of opinion.

> The
> class equivalent would be:
>
> >>> class Account(object):
>
>    def __init__(self, opening_balance):
>        self.balance = opening_balance
>
>    def post_transaction(self, x):
>         self.balance += x
>
> >>> fred = Account(1500)
> >>> joe = Account(12)
> >>> fred.post_transaction(20)
> >>> joe.post_transaction(-10)
> >>> fred.balance
> 1520
> >>> joe.balance
>
> 2
>
> There is no scope for the particular error I highlighted: you no longer
> have the duplication of declaring the functions and then returning them.

The 'particular error' you highlighted was a typographical error,
which can happen in any code. Sure, you can't have the exact same
typographical error, but that's what happens when you switch between
paradigms.

> Also you don't need the accessor function at all (and if at some point
> in the future you do want it you can make it a property).
>
> You don't have to invent separate names for each of the returned
> functions: the dot notation suddenly makes that a no brainer.

Fair enough; you got two valid arguments there.

> Also the class is easier to extend: you no longer have to find and
> change every call to account() if you want to add another method: just
> add it.

Of course, there are cases where you'll never want to extend it.



From paul at boddie.org.uk  Fri Oct 19 08:48:48 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Fri, 19 Oct 2007 05:48:48 -0700
Subject: Noob: Loops and the 'else' construct
In-Reply-To: <1192793944.775832.295350@e9g2000prf.googlegroups.com>
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
	<mailman.196.1192763502.13605.python-list@python.org>
	<MPG.218277463f27c68f989715@news.individual.de>
	<1192793944.775832.295350@e9g2000prf.googlegroups.com>
Message-ID: <1192798128.788160.175510@z24g2000prh.googlegroups.com>

On 19 Okt, 13:39, Dustan <DustanGro... at gmail.com> wrote:
> On Oct 19, 3:12 am, Thorsten Kampe <thors... at thorstenkampe.de> wrote:
>
> > So a for/else loop is exactly the same thing as a for loop with the
> > else clause outside the loop (except for "break")?
>
> Am I missing something here? It sounds to me like you just described
> two identical constructs.

Think of the loop-plus-else construct as behaving like this:

while 1:
    # Get next element (in a for loop)
    if loop_condition: # eg. whether we have an element
        # Loop body statement
    else:
        # Loop else statement
        break

Taking the example...

for i in range(10):
    print i
else:
    print 'the end!'

This is equivalent to...

while 1:
    # Get next element (from the range iterator)
    if next element: # yes, it's more complicated than this
        print i
    else:
        print 'the end!'
        break

Now consider what happens if you put a break statement inside the for
loop.

Paul



From mellit at gmail.com  Fri Oct 26 16:02:01 2007
From: mellit at gmail.com (Anton Mellit)
Date: Fri, 26 Oct 2007 22:02:01 +0200
Subject: Hack request: rational numbers
Message-ID: <c038b2740710261302o1daa4f0ao54fe96d2993c63a5@mail.gmail.com>

> Hi!
>
> I am using rational numbers from the gmpy module and I find that creating
> one in Python using
>
>>>> mpq(3,4)
>
> is rather clumsy. Clearly, minimal representation of this rational number
> is
>
>    3/4
>
> but in Python this expression has different meaning.

Hi,
I am writing an interface module with the PARI library and I had the
same question. So I implemented division operator for my new type
which of course did not work if both division arguments are integers.
Say 3/4 gives zero. But I discovered very simple hack. I add the
following string to my module initialization function:

	PyInt_Type.tp_as_number->nb_divide = gen_div;

Here gen_div is the function I use for division of objects of my new type.

This solution is pretty nice since I do not have to make changes into
python or interactive shell. It is even better to make a function
which would 'turn on/off' my division. It is strange that it is only
possible to do such things in C code, I cannot do it from python.

Anton


From aaron.watters at gmail.com  Thu Oct 11 09:19:05 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Thu, 11 Oct 2007 13:19:05 -0000
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <7xtzoynm64.fsf@ruckus.brouhaha.com>
References: <mailman.59.1192065699.927.python-list@python.org>
	<7xtzoynm64.fsf@ruckus.brouhaha.com>
Message-ID: <1192108745.766895.156050@19g2000hsx.googlegroups.com>

On Oct 11, 3:30 am, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
> "Delaney, Timothy (Tim)" <tdela... at avaya.com> writes:
> As for [ http://nucular.sourceforge.net ]
> itself, I've only had a chance to glance at the
> site...

Thanks for taking a look.  I hope you don't mind if I disagree
with a number of your comments below.

> ...but it looks a little more akin to Solr than to Lucene.  Solr is
> a Java application that wraps Lucene to present a more convenient
> interface

I'm not sure but I think nucular has aspects of both since
it implements both the search engine itself and also provides
XML and HTTP interfaces, like

http://www.xfeedme.com/nucular/gut.py/go

> ...although it does this using XML over an HTTP socket.  One
> thing about Solr and probably anything else like this: if you want to
> handle a high query load with big result sets, you absolutely must
> have enough ram to cache your entire index. ...

Of course it would be nice to have everything in RAM, but
it is not absolutely necessary.  In fact you can get very good
performance with disk based indices, especially when the index
is "warm" and the most heavily hit disk buffers have been
cached in RAM by the file system.

As a test I built an index with 10's of millions of entries
using nucular and most queries through CGI processes clocked
in in 100's of milliseconds or better -- which is quite acceptable,
for many purposes.

> ...Since ram is expensive
> and most of it will be sitting there doing nothing during the
> execution of any query, it follows that you want multiple CPU's
> sharing the ram.  So we're back to the perennial topic of parallelism
> in Python...

...Which is not such a big problem if you rely on disk caching
to provide the RAM access and use multiple processes to access
the indices.

The global interpreter lock (GIL) can be kinda nice sometimes too.
When I built the big indices mentioned above it took a long
time.  If I had used a multithreaded build my workstation
would have been worthless during this time.
As it was I was using Python in
a single process, so the other CPU was happy to work with me
during the build, and I hardly noticed any performance
degradation.

In one java shop I worked in the web interface worked
ok (not great) provided it was only hit by one access at a time,
because the system was engineered so that one access
consumed all computational resources on the box.  Of course
if you hit it continually with 4 concurrent accesses the
system went to its knees and got tangled up in livelocks
and other messes.  In the case of web apps it can be
very nice to have one access handled by one process in one
thread leaving the other cpu's available to handle other
accesses or do other things.

imho, fwiw, ymmv, rsn, afaik.
   -- Aaron Watters

===
even in a perfect world
where everyone is equal
i'd still own the film rights
and be working on the sequel
   -- Elvis Costello "Every day I write the book"



From steven.bethard at gmail.com  Tue Oct 30 12:11:06 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 30 Oct 2007 10:11:06 -0600
Subject: setting variables in outer functions
In-Reply-To: <slrnfiejco.18k.horpner@FIAD06.norwich.edu>
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
Message-ID: <odednaRNKvsGyrranZ2dnUVZ_qrinZ2d@comcast.com>

Neil Cerutti wrote:
> On 2007-10-29, Steven Bethard <steven.bethard at gmail.com> wrote:
>> Hrvoje Niksic wrote:
>>> Tommy Nordgren <tommy.nordgren at comhem.se> writes:
>>>
>>>> Given the following:
>>>> def outer(arg)
>>>>      avar = ''
>>>>      def inner1(arg2)
>>>>           # How can I set 'avar' here ?
>>> I don't think you can, until Python 3:
>>> http://www.python.org/dev/peps/pep-3104/
>> But it definitely does work in Python 3 if you use 'nonlocal'::
>>
>>      Python 3.0a1+ (py3k:58681, Oct 26 2007, 19:44:30) [MSC v.1310 32 bit
>>      (Intel)] on win32
>>      Type "help", "copyright", "credits" or "license" for more
>>      information.
>>      >>> def f():
>>      ...     x = 1
>>      ...     def g():
>>      ...         nonlocal x
>>      ...         x = 2
>>      ...     print(x)
>>      ...     g()
>>      ...     print(x)
>>      ...
>>      >>> f()
>>      1
>>      2
>>
>> That said, I'd like to see the reason you think you want to do
>> this.
> 
> It's allows a standard programming idiom which provides a
> primitive form of object oriented programming using closures to
> represent state.

Yeah, that's what I was afraid of. ;-)

STeVe


From joost at cassee.net  Fri Oct  5 05:23:57 2007
From: joost at cassee.net (Joost Cassee)
Date: Fri, 05 Oct 2007 11:23:57 +0200
Subject: Strange generator problem
Message-ID: <aac13$470602b1$54298df6$10176@news2.tudelft.nl>

Hello all,


I bumped into an unexpected problem using generators. Consider this code:

def test(s):
    return _test([], [], s)
def _test(s1, s2, s):
    if s:
        s1.append(s.pop())
        for x in _test(s1, s2, s):
            yield x
        s2.append(s1.pop())
        for x in _test(s1, s2, s):
            yield x
        s.append(s2.pop())
    else:
        yield s1, s2

The test function is supposed be a generator returning all combinations
of dividing the elements of the input list into two distinct lists
(order of elements unimportant). (This post is not about the quality of
the solution. :-) )

Consider now the result of using the generator in a for-loop and in the
list function (same result for list comprehension):

>>> for x in test(range(3)):
...      print x
...
([2, 1, 0], [])
([2, 1], [0])
([2, 0], [1])
([2], [1, 0])
([1, 0], [2])
([1], [2, 0])
([0], [2, 1])
([], [2, 1, 0])
>>>
>>> list(test(range(3)))
[([], []), ([], []), ([], []), ([], []), ([], []), ([], []), ([], []),
([], [])]

The following (simpler) generator works as expected:

>>> def test2(s):
...     for x in s:
...         yield x
...
>>> list(test2(range(3)))
[0, 1, 2]

Can anyone explain the difference? The python version is 2.5.1.


Regards,

Joost


From david at boddie.org.uk  Sun Oct 28 14:14:48 2007
From: david at boddie.org.uk (David Boddie)
Date: Sun, 28 Oct 2007 19:14:48 +0100
Subject: fclient project seeking co-coders
Message-ID: <200710281914.49330.david@boddie.org.uk>

On Sun Oct 28 11:49:17 CET 2007, J?rgen Urner wrote:

> I Just recently registered a project fclient to sourceforge.net
> [http://sourceforge.net/projects/fclient]. fclient is intended to
> become desktop client for the freenet [freenetproject.org]
> network written in python and Qt4.

It sounds like an interesting project.

> fclient is very alpha, in fact only parts of the freenet client
> protocol are curently implementated and loads of work ahead. But I
> would appreciate very much finding interested co-coders to take part
> in the project.
>
> Me, I am no professional coder, but an enthusiast with one or the
> other year of python (and Qt) experience. If interested in the project
> (and freenet), feel free to drop a mail to the users mailing list at
> the project page.

If you need advice on parts of the implementation, there are plenty of
Python and Qt experts on the PyQt mailing list:

  http://www.riverbankcomputing.com/mailman/listinfo/pyqt

If you're trying to avoid subscribing to additional mailing lists, don't
worry: quite a few of us read python-list/comp.lang.python as well.

Incidentally, you might find it useful to add your project to the list
of application on the PyQt Wiki:

  http://www.diotavelli.net/PyQtWiki/SomeExistingApplications

David



From matt at tplus1.com  Wed Oct 17 12:42:25 2007
From: matt at tplus1.com (Matthew Wilson)
Date: Wed, 17 Oct 2007 16:42:25 GMT
Subject: Need recommendations on mock object packages
Message-ID: <slrnfhcerd.dp7.matt@coleridge.tplus1.com>

What are the most popular, easiest to use, and most powerful mock
object packages out there?

Thanks in advance.

Matt


From hniksic at xemacs.org  Thu Oct  4 04:38:16 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 04 Oct 2007 10:38:16 +0200
Subject: migrating to packages
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
	<87hcl7jsn0.fsf@mulj.homelinux.net>
	<4704a3a5$0$5110$426a34cc@news.free.fr>
Message-ID: <874ph79sw7.fsf@mulj.homelinux.net>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> writes:

> it's quite common to use the __init__.py of the package (as
> explained by Ben) as a facade to the internal organization of the
> package, so you can change this internal organization without
> breaking client code.

We agree on that.  It is the OP who *wants* to access his modules
directly without ever naming the package.  That is why I think he is
missing the point of having a package in the first place.

>> That way, if someone creates another module with using the same
>> name (mymodule), it won't conflict with yours.  If you don't want
>> to change mymodule to mypackage.mymodule, why use a package in the
>> first place?
>
> Because you have too much code to keep it in a single file.

There is no "single file", the OP already has modules A and B.


From gagsl-py2 at yahoo.com.ar  Fri Oct  5 22:21:12 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 05 Oct 2007 23:21:12 -0300
Subject: Python + Shoutpy + Twisted Locks
References: <1191570955.158128.326560@57g2000hsv.googlegroups.com>
Message-ID: <op.tzq7hmkrx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 05 Oct 2007 04:55:55 -0300, exhuma.twn <exhuma at gmail.com> escribi?:

> [...] What I found
> is that "libshout" is blocking, which should be fine as the whole
> thing runs in it's separate thread. But the application hangs
> nevertheless while streaming. This effectively blocks out the other
> thread that checks the player status, which then fails to append new
> songs to the queue. So only one song is played when streaming.
>
> The other threads in my application run fine and don't block the rest
> of the app. So I guess, that the main problem is that blocking occurs
> "outside" the python world and "inside" the libshout world.

Only one thread at a time may be executing Python code; the Global  
Interpreter Lock (GIL) ensures the mutual exclusion. Extension modules  
(written in C) may use the macros  
Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS to release/acquire the GIL  
before/after an external blocking call.
I don't know libshout, or how you are doing the binding python-libshout,  
but if your analysis is correct it means that the code is not releasing  
the GIL at the appropiate points.

-- 
Gabriel Genellina



From istvan.albert at gmail.com  Wed Oct 10 09:46:17 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Wed, 10 Oct 2007 13:46:17 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191988646.640498.278860@19g2000hsx.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191988646.640498.278860@19g2000hsx.googlegroups.com>
Message-ID: <1192023977.941629.241350@v3g2000hsg.googlegroups.com>

On Oct 9, 11:57 pm, mdipie... at cs.depaul.edu wrote:
> Since you are starting a new project you may want to look into
> something new and different
>
> http://mdp.cti.depaul.edu/examples

This is actually a neat framework! I'm a somewhat of fan of web-
frameworks and I used most major ones and I like to poke around.

Here is a mini review:

Gluon seems to be modeled with the web.py mentality, everything in one
package, very simple but covering all essentials templating, database,
sessions and server. It reminds me of a content management system, you
start with a working server, then you add your components to it.

It also implements a Zope-like through-the-web interaction, everything
can be modified in the administration interface, templates, databases,
code, media. This sort of functionality is sometimes frowned upon but
can be a very convenient way to make small changes.

Honestly the framework field is a bit crowded so it is an uphill
battle to get a framework accepted, but it is nice to see something
different.

i.

ps. fix the typos in the docs and get people's names right, it makes a
bad impression otherwise



From paul.hankin at gmail.com  Wed Oct 24 08:54:02 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 24 Oct 2007 12:54:02 -0000
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <1193230442.262619.163590@z24g2000prh.googlegroups.com>

On Oct 24, 1:09 pm, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this code
>
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
>
> I think there is a better way, but I can't see how...

import operator
return filter(cls.dArguments), filter(operator.not_, cls.dArguments)

Or just:

mandatory = [arg for arg in cls.dArguments in arg]
optional = [arg for arg in cls.dArguments in not arg]
return mandatory, optional

--
Paul Hankin



From jcd at sdf.lonestar.org  Wed Oct 31 11:09:52 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Wed, 31 Oct 2007 11:09:52 -0400
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <37fac3b90710310755y4252c0dai307b083ae4a39daf@mail.gmail.com>
References: <loom.20071031T132748-928@post.gmane.org>
	<1193844846.4728a06e52cb8@comuh.uh.cu>
	<37fac3b90710310755y4252c0dai307b083ae4a39daf@mail.gmail.com>
Message-ID: <20071031150952.GA27664@sdf.lonestar.org>

On Wed, Oct 31, 2007 at 03:55:49PM +0100, jelle feringa wrote regarding Re: shouldn't 'string'.find('ugh') return 0, not -1 ?:
> 
>    There is a subtle point though.
> 
>    If the substring is not found '_'.find(' '), will return -1
> 
>    Semanticly, I was expecting the that if the substring was not found,
>    the conditional statement would not be found.
> 
>    However, python evaluates -1 to True, so that is what I do find
>    confusing.
> 
>    So, I was arguing that '_'.find(' ') might return 0, however that is
>    obviously ambigious, since 0 might be an index as well.
> 
> 
> 
>    So, perhaps I should rephrase and ask, why if -1 evaluates to True?
> 
>    I think that's pretty ugly...
> 
> 

It is ugly, but there's no alternative.  In essence, you can't do a truth-test on it, because you're not testing the truth of the find statement.  The statement that you want to test the truth of is s.find(q) >= 0.  In other words, you want to see that the substring was found at a valid (non-negative) location. As someone else pointed out, it would make more sense to use None instead of -1.  You still couldn't use `if s.find(q):` because you'd get a false result for a substring found at the beginning of the string, but the return value would make more intuitive sense.  

Witness also the problem of actually using the result of find:

s[s.find(q)]

will yield a valid part of the string (the last character) when q is not found.  If it evaluated to none, you'd get a respectable TypeError instead.

But you still wouldn't--and never will--be able to say `if s.find(q)`, because valid array indices can be either true or false.

Cheers,
Cliff





From ensiferum_ at hotmail.com  Tue Oct 16 13:06:22 2007
From: ensiferum_ at hotmail.com (Sami Vaisanen)
Date: Tue, 16 Oct 2007 20:06:22 +0300
Subject: Getting error message/trace over the C API
Message-ID: <pan.2007.10.16.17.06.22.42783@hotmail.com>

Hello group,
 
I'm writing a C++ based application that embeds the python engine. Now I
have a problem regarding exception/error information. Is there a way to
get the exception message and possibly the traceback into a string for
example? I've been eyeballing the PyErr_ module and it seems fairly
limited. In other words PyErr_Print() calls the right functions for
getting the exception information but unfortunately it is hardwired to
print this data directly into sys.stderr, and for an embedded application
this is completely inappropriate. 
 
I have seen solutions that propose writing a custom Python class with
write method and using that to grab the output from sys.stderr and then
saving the data for example into a variable for later access, but unless
Im mistaken this solution (not only that it is extremely ugly) is not
thread safe. Even if a thread in my application is holding GIL, the lock
can be released by extensions/the interpreter and thus opens up a race
condition regarding that grabber object. 
 
Please advice how to do this.

-sami


From witichis at gmail.com  Mon Oct 15 11:15:54 2007
From: witichis at gmail.com (witichis at gmail.com)
Date: Mon, 15 Oct 2007 08:15:54 -0700
Subject: class fails if imported
Message-ID: <1192461354.406393.48000@y27g2000pre.googlegroups.com>

Hi,

I wrote a class to read in a binary file:
see the code of readWLdata.py below

--------------8<------------------------------- test.py
from readWLdata import block

if __name__ == "__main__":
    print "read WL data"

    b = block('WL100/AAPL.wl')
    for i in range(b.cnt):
        print i
        b.nextBlock()
    b.printb()
--------------8<-------------------------------


wich results in this:


1
.....
38
39
Traceback (most recent call last):
  File "C:\Apps\arb\tradehist.py", line 20, in <module>
    b.nextBlock()
  File "C:\Apps\arb\readWLdata.py", line 24, in nextBlock
    (self.h,) = struct.unpack('f', self.f.read(4))
  File "C:\Apps\python2.5\lib\struct.py", line 87, in unpack
    return o.unpack(s)
error: unpack requires a string argument of length 4



But if I hit F5 on this it works fine:

--------------8<-------------------------------readWLdata.py
import struct
from datetime import *
import time

class block():
    def __init__(self, fn):
        self.fn = fn
        self.f = open(fn, 'rb', 4096)
        (self.cnt,) = struct.unpack('I', self.f.read(4))
        print self.cnt
        self.d = 0.0
        self.o = 0.0
        self.l = 0.0
        self.h = 0.0
        self.c = 0.0
        self.v = 0.0

    def printb(self):
        print "d:",self.d," o:",self.o," h:",self.h," l:",self.l,"
c:",self.c," v:",self.v

    def nextBlock(self):
        (self.d,) = struct.unpack('d', self.f.read(8))
        (self.o,) = struct.unpack('f', self.f.read(4))
        (self.h,) = struct.unpack('f', self.f.read(4))
        (self.l,) = struct.unpack('f', self.f.read(4))
        (self.c,) = struct.unpack('f', self.f.read(4))
        (self.v,) = struct.unpack('f', self.f.read(4))
        return 0

if __name__ == "__main__":
    print "read WL data"

    b = block('WL100/AAPL.wl')
    for i in range(b.cnt):
        print i
        b.nextBlock()
    b.printb()
--------------8<-------------------------------readWLdata.py

The test data file is containing stock prices and can be downloaded
here: http://63.99.108.115/WL100.zip

Any ideas?

Cheers
Andy



From mrstephengross at hotmail.com  Wed Oct 24 15:07:44 2007
From: mrstephengross at hotmail.com (mrstephengross)
Date: Wed, 24 Oct 2007 19:07:44 -0000
Subject: Easiest way to get exit code from os.popen()?
Message-ID: <1193252864.957914.305300@t8g2000prg.googlegroups.com>

Hi folks. I'm using os.popen() to run a command; according to the
documentation, the filehandle.close() oepration is suppsoed to return
the exit code. However, when I execute something like "exit 5",
close() returns 1280. Here's the code:

  pipe = os.popen("exit 5")
  print pipe.close() # prints 1280

Am I doing something wrong? Is there an easier way to get the exit
code?

Thanks,
--Steve



From nick at craig-wood.com  Tue Oct 30 06:30:18 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Tue, 30 Oct 2007 05:30:18 -0500
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<7xodeouga8.fsf@ruckus.brouhaha.com>
	<1193396435.916666.277770@50g2000hsm.googlegroups.com>
	<5oKdncgTz5YBBb_anZ2dnUVZ_obinZ2d@comcast.com>
	<1193731947.088651.324330@50g2000hsm.googlegroups.com>
Message-ID: <slrnfidvsg.skr.nick@irishsea.home.craig-wood.com>

Anurag <anuraguniyal at gmail.com> wrote:
>  What about this no map, reduce, mutiplication or even addition
>  Its truly interative and You will need to interate till infinity if
>  you want correct answer ;)
> 
>  def factorial(N):
>      """
>      Increase I ...and go on increasing...
>      """
>      import random
> 
>      myNumer = range(N)
>      count = 0
>      I = 10000 #10**(N+1)
>      for i in range(I):
>          bucket = range(N)
>          number = []
>          for i in range(N):
>              k = bucket[ random.randrange(0,len(bucket))]
>              bucket.remove(k)
>              number.append(k)
> 
>          if number == myNumer:
>              count+=1
> 
>      return int(I*1.0/count+.5)

;-)

Note you can write your middle loop as

    for i in range(I):
        number = myNumer[:]
        random.shuffle(number)
        if number == myNumer:
            count+=1


-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From cadet.bramble at gmail.com  Mon Oct  1 22:59:10 2007
From: cadet.bramble at gmail.com (bramble)
Date: Tue, 02 Oct 2007 02:59:10 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191293650.355504.312590@n39g2000hsh.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<7xr6kez5aa.fsf@ruckus.brouhaha.com>
	<1191293650.355504.312590@n39g2000hsh.googlegroups.com>
Message-ID: <1191293950.909404.151910@50g2000hsm.googlegroups.com>

On Oct 1, 10:54 pm, bramble <cadet.bram... at gmail.com> wrote:
>
> BTW, pulling Tkinter and related GUI stuff out of Py3k's standard
> library wouldn't harm existing Tkinter users -- it would merely
> require them to actually install it if they want it.

Oops. I meant to put in there, after the "BTW,": "it seems to me
that".



From bh at izb.knu.ac.kr  Thu Oct 25 03:34:12 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Thu, 25 Oct 2007 16:34:12 +0900
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <471fcba9$0$13110$9b4e6d93@newsspool2.arcor-online.net>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com> <ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
	<O7Sdnegv-qzkUIHanZ2dnUVZ_tWtnZ2d@comcast.com>
	<mailman.418.1193243124.13605.python-list@python.org>
	<471fcba9$0$13110$9b4e6d93@newsspool2.arcor-online.net>
Message-ID: <1193297652.865.13.camel@viola.izb.knu.ac.kr>

On Thu, 2007-10-25 at 00:48 +0200, Wildemar Wildenburger wrote:
> Byung-Hee HWANG wrote:
> > On Mon, 2007-10-22 at 12:19 -0400, Lew wrote:
> > [something attackish]
> > 
> > Well, you are making a personal attack, it's dangerous. I wish to see
> > only discussions about TeX ;;
> > 
> 
> On a python group?
> 
> Also: Lew won't see your post, he's on c.l.java.*

oh my god..;;

-- 
Byung-Hee HWANG * ??????? * InZealBomb 
"Friendship is everything. Friendship is more than talent."
		-- Vito Corleone, "Chapter 1", page 38


From mfmorss at aep.com  Tue Oct 23 16:38:37 2007
From: mfmorss at aep.com (Mark Morss)
Date: Tue, 23 Oct 2007 13:38:37 -0700
Subject: strange transliteration in win32com.client
Message-ID: <1193171917.034743.121960@q5g2000prf.googlegroups.com>

Is this the place to ask a win32com.client question?  I am a unix
person trying to run on windows, so I have little familiarity with
this module.  I have this code:

import win32com.client

"""An Access connection"""

def connect(data_source, user, pwd, mdw):
    connAccess = win32com.client.Dispatch(r'ADODB.Connection')
    SOURCE=%s;USER ID=%s;PASSWORD=%s;Jet OLEDB:System Database=%s;"
% (data_source, user, pwd, mdw)
    connAccess.Open(DSN)
    return connAccess

I when I call this, running my program from the windows command line
on the C:\ drive, with data_source='\\Hqwhslfs001\office\risk oversight
\myaccessdb.mdb', which is the fully specified drive name, it comes
back with:

  File "C:\Python25\lib\site-packages\win32com\client\dynamic.py",
line 258, in _ApplyTypes_
    result = self._oleobj_.InvokeTypes(*(dispid, LCID, wFlags,
retType, argTypes) + args)
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0,
'Microsoft JET Database Engine', "'c:\\Hqwhslfs001\\office\risk
oversight\\myaccess.mdb' is not a valid path.  Make sure that the path
name is spelled correctly and that you are connected to the server on
which the file resides.", None, 5003044, -2147467259), None)

Please note the strange insertion of double slashes in the indicated
'not valid path.'  Also the insertion of 'c:' and the strange leading
double quotation mark.

When I call it with data_source = 'V:\risk oversight\myassessdb.mdb',
which reflects how this same drive is mapped on my machine, I get:

File "C:\Python25\lib\site-packages\win32com\client\dynamic.py", line
258, in _ApplyTypes_
    result = self._oleobj_.InvokeTypes(*(dispid, LCID, wFlags,
retType, argTypes) + args)
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0,
'Microsoft JET Database Engine', "'v:\\\risk oversight\
\myaccessdb.mdb' is not a valid path.  Make sure that the path name is
spelled correctly and that you are connected to the server on which
the file resides.", None, 5003044, -2147467259), None)

Note the weird transliteration of data_source.  I am powerless to
understand this.



From Florian.Lindner at xgm.de  Fri Oct 12 14:50:24 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 20:50:24 +0200
Subject: Problem with global
Message-ID: <feoflr$cgs$01$1@news.t-online.com>

Hello,
I have a little problem with the global statement.

def executeSQL(sql, *args):
    try:
        import pdb; pdb.set_trace()
        cursor = db.cursor()  # db is <type 'NoneType'>.
        [...]
    except:
        print "Problem contacting MySQL database. Please contact root."
        sys.exit(-1) 


db  = None # Global Variable for DB connection
    
def main():
    [...]    
    global db
    db = MySQLdb.connect(...)
    [...]
    executeSQL(sql, args)


Why isn't the global variable db not written in main() to be a mysql
connection and still none type in executeSQL?

Thanks,

Florian


From crazychrisy54 at hotmail.com  Tue Oct 16 03:44:40 2007
From: crazychrisy54 at hotmail.com (crazychrisy54 at hotmail.com)
Date: Tue, 16 Oct 2007 00:44:40 -0700
Subject: WebBased Vector 2D Graphics
In-Reply-To: <mailman.1575.1191584519.2658.python-list@python.org>
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
	<5mmlf5FeagctU1@mid.uni-berlin.de>
	<mailman.1575.1191584519.2658.python-list@python.org>
Message-ID: <1192520680.196873.128300@t8g2000prg.googlegroups.com>

On Oct 5, 12:41 pm, Robin Becker <ro... at reportlab.com> wrote:
> Diez B. Roggisch wrote:
> >  cj... at bath.ac.uk wrote:
>
> .......
>
> > You certainly need to get on speed with webdevelopment. Otherwise you will
> > fail miserably.
>
> > There are several options here:
>
> >  - rendering a server-side image, deliver that embedded in a html-page
>
> >  - render using html tags like DIV and the like, which allow for positioned
> > colored rectangles and text, in pixel coordinates
>
> >  - canvas tag, to render 2D-drawing-commands
>
> >  - embedded SVG
>
> > All that can be enriched with AJAX to have that fancy
> > realtime-update-thingy.
>
> > Diez
>
> simple rectangles are pretty easy though. I did a progress bar herehttp://www.jessikat.plus.com/pbar.htmlwith a bit of javascript.
>
> The other side of the information usually involves ajax call backs to determine
> how much of the job has been done etc etc. I seem to remember doing that for a
> project a while back. As I recall we had a cgi script that did
>
> action "start" start off a long running job that detached itself from the web
> server so the response could be made short
>
> action "query" find out from an output file how much of the job has been done.
>
> A javascript timeout periodically performed the query request and used the
> response to update the ticker.
> --
> Robin Becker- Hide quoted text -
>
> - Show quoted text -

That is pretty much exactly what I want! Can I ask how you have
presented the bar on the page i.e. embedded into a canvas? because I
can't get this to work on netscape 7 (which is a requirement) and
wondered if there was a way to get around this?
Cheers

Chris



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 24 10:10:25 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 24 Oct 2007 16:10:25 +0200
Subject: building a linux executable
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
	<1193228750.497591.202330@y27g2000pre.googlegroups.com>
Message-ID: <5o922hFllmt9U3@mid.individual.net>

Paul Boddie wrote:
> It's not usually the absence of Python that's the problem. What if
> your application uses various extension modules which in turn rely
> on various libraries (of the .so or .a kind)? It may be more
> convenient to bundle all these libraries instead of working out
> the package dependencies for all the target distributions, even if
> you know them all.

True, thanks for clarification.

Regards,


Bj?rn

-- 
BOFH excuse #218:

The UPS doesn't have a battery backup.



From python at rcn.com  Fri Oct 19 16:22:13 2007
From: python at rcn.com (Raymond Hettinger)
Date: Fri, 19 Oct 2007 13:22:13 -0700
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
In-Reply-To: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
References: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
Message-ID: <1192825333.656101.54580@z24g2000prh.googlegroups.com>

On Oct 19, 11:26 am, xkenneth <xkenn... at gmail.com> wrote:
> All,
>
>    Just a quick question. I want to be able to have a data structure
> that organizes data (timestamps I'm working with) sequentially, so
> that i can easily retrieve the first x amount of timeStamps without
> iterating over a list. My thought was to use a binary tree, am i
> overthinking the problem to try and implement this structure inside of
> python? I was also hoping this would already be done for me.

Try heapq.nsmallest().


Raymond




From pythoncurious at gmail.com  Tue Oct 16 12:46:21 2007
From: pythoncurious at gmail.com (pythoncurious at gmail.com)
Date: Tue, 16 Oct 2007 16:46:21 -0000
Subject: Singleton
In-Reply-To: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
Message-ID: <1192553181.114106.315740@z24g2000prh.googlegroups.com>

Hi again,

Just wanted to say thanks.
I now see that I misunderstood where the problem was and I got
useful information about how importing stuff works.

My problem is solved and I'm grateful for your help.




From mail at microcorp.co.za  Sun Oct 28 03:44:17 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sun, 28 Oct 2007 09:44:17 +0200
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com><mailman.487.1193439370.13605.python-list@python.org><1193441374.061735.308710@o38g2000hse.googlegroups.com><mailman.499.1193474381.13605.python-list@python.org>
	<13i6e9timmvuu51@corp.supernews.com>
Message-ID: <005101c81936$58573de0$03000080@hendrik>

"Steven D'Aprano" <stev....e.com.au> wrote:

> Calculating numbers like 10**520000 or its reciprocal is also a very good 
> exercise in programming. Anyone can write a program to multiply two 
> floating point numbers together and get a moderately accurate answer:
> 
> product = X*Y # yawn
> 
> But multiplying 200,000 floating point numbers together and getting an 
> accurate answer somewhere near 10**-520000 requires the programmer to 
> actually think about what they're doing. You can't just say:
> 
> A,T,C,G = (0.35, 0.30, 0.25, 0.10)
> product = map(operator.mul, [A*T*C*G]*200000)
> 
> and expect to get anywhere.
> 
> Despite my fear that this is a stupid attempt by the Original Poster's 
> professor to quantify the old saw about evolution being impossible 
> ("...blah blah blah hurricane in a junk yard blah blah Concorde blah blah 
> blah..."), I really like this homework question.

yes it got me going too - and I even learned about the gmpy stuff - so it was
a bit of a Good Thing...

- Hendrik



From zzbbaadd at aol.com  Mon Oct 29 05:30:37 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Mon, 29 Oct 2007 02:30:37 -0700
Subject: Python Windows Installation
In-Reply-To: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
Message-ID: <1193650237.526599.59000@z9g2000hsf.googlegroups.com>

I finally gave up trying to install to c:\Python25 and went with the
install to C:\.  However, I tried to install a module called pywin32
(Python for Windows Extensions) and after recognizing that the Python
installation was in C:\ and saying it would install to C:\LIB\SITE-
PACKAGES, it would then blow up. This was consistently repeatable.
Seeing PythonWin mentioned regarding pywin32 reminded me of the
ActiveState distribution of Python as I knew that came with
PythonWin.

After uninstalling the python.org Python from C:\, I was able to
successfuly install the ActiveState Python distribution to C:
\Python25.




From robert.rawlins at thinkbluemedia.co.uk  Fri Oct 19 10:00:39 2007
From: robert.rawlins at thinkbluemedia.co.uk (Robert Rawlins - Think Blue)
Date: Fri, 19 Oct 2007 15:00:39 +0100
Subject: Control Log File Size
Message-ID: <014c01c81258$6f2f1e00$4d8d5a00$@rawlins@thinkbluemedia.co.uk>

Hello Chaps,

 

I've got an application running on linux which writes log files using the
python logging module. I'm looking for some help and advice to cap the size
which the file will grow too, something reasonably like 2Mb would be great.

 

What is the best way to handle this kind of thing? Can this be done using a
setting in the logging module? Or is it something I'll have to get the FS to
handle for me?

 

Thanks chaps,

 

Rob

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071019/b0df26a1/attachment.html>

From paul.hankin at gmail.com  Wed Oct 10 16:40:52 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 10 Oct 2007 20:40:52 -0000
Subject: Multidimensional sort
In-Reply-To: <1192045656.850158.11820@v3g2000hsg.googlegroups.com>
References: <1192045656.850158.11820@v3g2000hsg.googlegroups.com>
Message-ID: <1192048852.541628.37740@d55g2000hsg.googlegroups.com>

On Oct 10, 8:47 pm, termiflyer <dpfl... at earthlink.net> wrote:
> How do I sort this:
>
> >>> a
>
> [['3', ['1', '0']], ['4', ['3', '0'], ['2', '0']]]
>
> where the list can be arbitrarily large by the 3rd dimension (i
> think).  E.g.:
>
> >>> a
>
> [['3', ['1', '0']], ['4', ['2', '0'], ['3', '0']]]

There's no canonical way to sort arbitrary data. For instance should
[1, 2, 3] come before or after [1, 3, 2]? Should [1] come before or
after [[1]]? Is there some structure to your data, or can it be any
values? Are all your strings made of digits, and should they be
compared as numbers (ie should '10' come after '2'?)

If you can say how to compare two of your data, say by defining a
compare function
def cmp(a, b):
   ...

Then you can sort your list using sorted(my_list, cmp=cmp).

Without knowing what your data means, and what you're planning to do
with it, it's not possible for anyone to answer your question
properly.

--
Paul Hankin



From jelleferinga at gmail.com  Wed Oct 31 11:48:29 2007
From: jelleferinga at gmail.com (jelle)
Date: Wed, 31 Oct 2007 15:48:29 +0000 (UTC)
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
References: <loom.20071031T132748-928@post.gmane.org>
	<47289BA8.5000109@tim.thechases.com>
Message-ID: <loom.20071031T154735-577@post.gmane.org>


>    if 'something' in check:
>      do(somethingElse)

Tim, you're absolutely right that the above makes far more sense in my case.
Thanks for pointing that out.

-jelle



From paulgeeleher at gmail.com  Wed Oct 17 10:57:04 2007
From: paulgeeleher at gmail.com (sophie_newbie)
Date: Wed, 17 Oct 2007 07:57:04 -0700
Subject: Stopping a fucntion from printing its output on screen
Message-ID: <1192633024.035476.262830@i38g2000prf.googlegroups.com>

Hi, in my program i need to call a couple of functions that do some
stuff but they always print their output on screen. But I don't want
them to print anything on the screen. Is there any way I can disable
it from doing this, like redirect the output to somewhere else? But
later on in the program i then need to print other stuff so i'd need
to re-enable printing too. Any ideas?



From mail at microcorp.co.za  Fri Oct  5 03:18:00 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 5 Oct 2007 09:18:00 +0200
Subject: Real time plot
References: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM><mailman.1493.1191484119.2658.python-list@python.org>
	<47051599$0$27367$ba4acef3@news.orange.fr>
Message-ID: <015a01c80722$0aa7a2e0$03000080@hendrik>

 "Jean-Francois Canac" <jfcan...e.fr> wrote:

"Hendrik van Rooyen" <m,,,,.co.za> a ?crit dans le message de news:

>>
>> I would draw dots on a suitably sized Tkinter canvas, after drawing a
>> schematic
>> of the race track (laborious).
>>
>> 20 per second will be no problem, provided the machine is half decent.
>>
>> What is the speed at which the com port runs?
>>
>> - Hendrik
>>
>The com port run at 19.2 kb/s.
>My pb is more the real time aspect: to see the plot changing in real time
>than the com aspect as the installation is already running with programs in
>c++.
>The PC on which it is running is good enought
>For me the interest is to migrate all taht on python to be able to make fast
>changes when it is of interest

Doing the plotting should not be a problem - the interesting bits will be
to associate the data with the plot, so that you can click to "drill down"
to see the speed, etc.

Or maybe you should do two things at once - show the position of the car
on the track, and a running graph of the variables of interest.

In a sense, plotting on a canvas is a fairly simple co ordinate transformation
problem.

HTH - Hendrik
- Hendrik






From danmcleran at yahoo.com  Thu Oct  4 15:21:35 2007
From: danmcleran at yahoo.com (danmcleran at yahoo.com)
Date: Thu, 04 Oct 2007 12:21:35 -0700
Subject: unit testing
In-Reply-To: <fe3dcd$8s2$1@solaris.cc.vt.edu>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
Message-ID: <1191525695.786834.315520@50g2000hsm.googlegroups.com>

On Oct 4, 1:02 pm, brad <byte8b... at gmail.com> wrote:
> Does anyone else feel that unittesting is too much work? Not in general,
> just the official unittest module for small to medium sized projects?
>
> It seems easier to write some quick methods that are used when needed
> rather than building a program with integrated unittesting. I see the
> value of it (the official unittest that is)... especially when there's a
> lot of source code. But this...
>
> if len(x) != y:
>     sys.exit('...')
>
> is a hell of a lot easier and quicker that subclassing unittest.TestCase
> on small projects :)
>
> Do others do their own "informal" unit testing?
>
> Just curious,
>
> Brad

 I actually do a lot of unit testing. I find it both annoying and
highly necessary and useful. I can't tell you how many bugs have been
squashed before ever leaving my cube by good unit testing. I also
agree that it can be a real pain. My opinion is you should do TDD
(test-driven development) and do it as much as you can tolerate. It
really will save you time and hassle in the long run.



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct  3 06:56:09 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 12:56:09 +0200
Subject: module confusion
In-Reply-To: <fdvpu1$ejq$2@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz>
Message-ID: <4703753d$0$8219$426a74cc@news.free.fr>

Lawrence D'Oliveiro a ?crit :
> In message <mailman.1404.1191345163.2658.python-list at python.org>, Robert
> Kern wrote:
> 
>> Lawrence D'Oliveiro wrote:
>>
>>> In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
>>> Kern wrote:
>>>
>>>> Not all of the modules in a package are imported by importing the
>>>> top-level package.
>>> You can't import packages, only modules.
>>>
>>>> os.path is a particularly weird case because it is just an alias to the
>>>> platform-specific path-handling module; os is not a package.
>>> os is a module, os.path is a variable within that module. That's all
>>> there is to it.
>> Yes, but os.path is also module. That's why I said it was a weird case.
> 
> You can't have modules within modules. 

If you're talking about the filesystem representation (ie : .py files), 
you obviously can't have a file within a file, indeed.

When it comes to the internal runtime representation of modules in 
Python, then it's totally different - a module is just an object, that 
can of course be an attribute of another module object.

 >>> import os
 >>> type(os)
<type 'module'>
 >>> type(os.path)
<type 'module'>
 >>>

> os.path isn't an exception--see
> below.
> 
>> In [1]: import os
>>
>> In [2]: type(os.path)
>> Out[2]: <type 'module'>
> 
> On my Gentoo system:
> 
>     >>> import os
>     >>> os.path
>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
> 
> It's just a variable that happens to point to the posixpath module.

It's just a name bound to a module object.


From jcd at sdf.lonestar.org  Sat Oct 27 16:47:17 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Sat, 27 Oct 2007 16:47:17 -0400
Subject: tuples within tuples
In-Reply-To: <20071026141417.GA10980@sdf.lonestar.org>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>	<1193403264.666264.113710@o38g2000hse.googlegroups.com>	<5oe73cFmh2htU1@mid.uni-berlin.de>	<1193407191.002389.17680@v3g2000hsg.googlegroups.com>
	<20071026141417.GA10980@sdf.lonestar.org>
Message-ID: <4723A3D5.9020407@sdf.lonestar.org>

J. Clifford Dyer wrote:
> On Fri, Oct 26, 2007 at 06:59:51AM -0700, korovev76 at gmail.com wrote regarding Re: tuples within tuples:
>   
>>> Resolve *what*?  The problem isn't clear yet; at least to me.  Above you
>>> say what you get.  What exactly do you want?  Examples please.
>>>
>>>       
>> Sorry for my poor english, but I meant: how can I obtain a list of A
>> and C starting from something like this?
>>
>> (A,B,C,D)
>> that could be
>> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)
>> but also
>> ('tagA', None, description, None)
>> when I don't know if C is a tuple or not?
>>
>> I guess that, at least,  within the cicle I may test if C is a tuple
>> or not.. And then apply the same cicle for C... and so on
>>
>> Am i right?
>>
>>
>> ciao
>> korovev
>>     
>
> So, to clarify the piece that you still haven't explicitly said, you want to keep the tag name and children of every element in your XML document.  (which is different from keeping (A, C) from tuple (A, B, C, D), because you want to modify C as well, and it's decendants.)
>
> As a first solution, how about: 
>
> def reduceXML(node):
>     if type(node) == str:
> 		return node
> 	else: 
> 		return (node[0], reduceXML(node[2])
>
> N.B. Beware of stack limitations.
>
>   
Also, as noted elsewhere in the string, your C is actually a list of
Cs.  So replace my else statement with

return [(child[0], reduceXML(child[2])) for child in node]

I think that'll do what you need.  However, I'm not sure why you need
to.  You're not getting any new information out of your data structure. 
Why not just ignore the attributes and the spare tuplet (or whatever you
call tuple-items) when you do the real processing next time through?

Cheers,
Cliff

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071027/7427ca2e/attachment.html>

From michele.simionato at gmail.com  Mon Oct 15 06:33:17 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Mon, 15 Oct 2007 10:33:17 -0000
Subject: Twisted (or for loops ?) madness
In-Reply-To: <1192443010.957983.81970@q3g2000prf.googlegroups.com>
References: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
	<1192443010.957983.81970@q3g2000prf.googlegroups.com>
Message-ID: <1192444397.510886.48990@i13g2000prf.googlegroups.com>

On Oct 15, 12:10 pm, looping <kad... at gmail.com> wrote:
>
> Why lambda doesn't work ? (variable scope problem ?)

This is a well known issue of for loops. Some believe it to be a bug
but Guido says it
is a design decision, in the sense that Python always do late binding.
If you
browse this list you will find many discussions. Basically if you do

funclist = []
for i in 1,2,3:
  def f():
     print i
  funclist.append(f)

you will get funclist[0]() == funclist[1]() == funclist[2]() == 3 (you
get the latest
binding of "i"). As you see, it has nothing to do with lambdas.


   Michele Simionato



From rdm at rcblue.com  Mon Oct 29 20:22:36 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 17:22:36 -0700
Subject: [Possible SPAM] Re: Using msvcrt (in Windows), how to
	catch Enter key?
In-Reply-To: <op.t0zchnivx6zn5v@gabriel2.softlabbsas.com.ar>
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
	<20071029165317.7009D1E4012@bag.python.org>
	<20071029174011.D22641E4029@bag.python.org>
	<op.t0zchnivx6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <20071030002246.B9ED91E401F@bag.python.org>

At 03:23 PM 10/29/2007, Gabriel Genellina wrote:
>En Mon, 29 Oct 2007 14:39:49 -0300, Dick Moores <rdm at rcblue.com> escribi?:
>
> > But here's a case where it seems I do need the
> >
> > if msvcrt.kbhit() line
>
>At least add a small sleep() call inside the loop, to be nice to other
>running processes:
>
> > =========================
> > #!/usr/bin/env python
> > #coding=utf-8
> > import time
> > import msvcrt
> > timeNow = time.time()
> > oldTimeNow = timeNow
> > while True:
> >      if msvcrt.kbhit():
> >          key = msvcrt.getch()
> >          if key == 'h':
> >              print 'Hello'
> >          if key == 'b':
> >              print 'Bye'
> >          if key == '\r': # Enter key
> >              break
>         else:
>             time.sleep(0.1)
> >      timeNow = time.time()
> >      if timeNow - oldTimeNow > 5:
> >          print "5 seconds passed"
> >          oldTimeNow = timeNow
> > =========================

Yes, that makes a major difference in the CPU 
usage percentage on my computer. In fact I can't 
even tell that there is anything going on other 
than the usual behind-the-scenes XP stuff. CPU 
usage stays right around 0% or 6%, with an 
occasional 6% and a very occasional 15%. 
Interestingly, sleep(0.001) makes as big a 
difference as your sleep(0.1), but sleep(0.0001) bumps it up to a steady 100%!

Thanks,

Dick 



From kadeko at gmail.com  Thu Oct 25 03:54:07 2007
From: kadeko at gmail.com (looping)
Date: Thu, 25 Oct 2007 00:54:07 -0700
Subject: Regular Expression question
In-Reply-To: <ffpgck$9um$02$1@news.t-online.com>
References: <1193294043.936217.54090@q5g2000prf.googlegroups.com>
	<5oasj2Fm1hl5U2@mid.uni-berlin.de>
	<1193296260.635805.260630@q3g2000prf.googlegroups.com>
	<ffpgck$9um$02$1@news.t-online.com>
Message-ID: <1193298847.241783.321390@k79g2000hse.googlegroups.com>

On Oct 25, 9:25 am, Peter Otten <__pete... at web.de> wrote:
>
> You want a "negative lookahead assertion" then:
>

Now I feel dumb...
I've seen the (?!...) dozen times in the doc but never figure out that
it is what I'm looking for.

So this one is the winner:
s = re.search(r'create\s+or\s+replace\s+package\s+(?!body\s+)', txt,
re.IGNORECASE)

Thanks Peter and Marc.



From gagsl-py2 at yahoo.com.ar  Wed Oct  3 00:11:12 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 01:11:12 -0300
Subject: win32com COMAdminCatalogObject Value method
References: <1191247471.992094.203630@n39g2000hsh.googlegroups.com>
	<1191274799_4541@sp12lax.superfeed.net>
	<1191337929.043023.115290@r29g2000hsg.googlegroups.com>
Message-ID: <op.tzlskyn9x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 02 Oct 2007 12:12:09 -0300, rc <chlo.prog at gmail.com> escribi?:

>> Try objCOMAdminCatalogObject.SetValue("ID", AppID).
> When I try that I get exception:
> AttributeError: Add.SetValue

I think you would get more help asking in python-win32 at python.org

-- 
Gabriel Genellina



From trekker182 at comcast.net  Wed Oct 31 17:27:20 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Wed, 31 Oct 2007 17:27:20 -0400
Subject: a few questions.
Message-ID: <4728F338.7020306@comcast.net>

1.  whats the best way to round a result to 4 decimal places?

I tried round, but then read that it only works with exponents of 10.

I'm trying to do it on this piece of code.

time = (distance / 4900)

2. What direction would I go in if I'm getting 5 inputs from the user 
and want to make a bar table out of them where a * represents a 100 of 
the total number?

For example,

Store 1: * *

Store 2: *

Store 3: * * *

ect,

I already know I'm going to be expecting to use a for loop (0,4) since 
there are 5 inputs, but how to get from say, 200 to the output of * * 
I'm a little lost.

thx





From rdm at rcblue.com  Mon Oct 29 12:53:11 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 09:53:11 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <1193675164.790618.194190@57g2000hsv.googlegroups.com>
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
Message-ID: <20071029165317.7009D1E4012@bag.python.org>

At 09:26 AM 10/29/2007, Gabriel Genellina wrote:
>On 29 oct, 09:23, Dick Moores <r... at rcblue.com> wrote:
>
> > >while True:
> > >     if msvcrt.getch() == '\r':
> >
> > I tried it and find that without the msvcrt.kbhit the first key I hit
> > doesn't do anything. I have to hit that key again, or another key.
>
>I'd say there is a logic error in your program then; keys don't "do
>anything" by themselves.
>Try posting a small sample, telling what you get and what you expect.

Huh. Works now.

import msvcrt
while True:
     key = msvcrt.getch()
     if key == 'h':
         print 'Hello'
     if key == 'b':
         print 'Bye'
     if key == '\r': # 'Enter' key
         break

Dick 



From _nospamnet_ at arcor.de  Sat Oct 27 12:00:52 2007
From: _nospamnet_ at arcor.de (_nospamnet_ at arcor.de)
Date: Sun, 28 Oct 2007 00:00:52 +0800 (CST)
Subject: sort a list
Message-ID: <305970.37358.qm@web92001.mail.cnb.yahoo.com>

hello,

I'm new to python and this list.I hope this question don't repeat an old story on the list.

I have a number list,say it's [3,2,1,4,5],I want to sort it as [1,2,3,4,5],how to do?

Thanks.





From damu.be at gmail.com  Thu Oct  4 08:20:32 2007
From: damu.be at gmail.com (Damodhar)
Date: Thu, 04 Oct 2007 12:20:32 -0000
Subject: HELP me Am very new one To python
Message-ID: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>

hi,

Am working in PHP MYSQL. I am very very interest to learn Python but i
don't Know Little Bit,
am using windows Xp, Ialready download from
http://www.python.org/ftp/python/2.5.1/python-2.5.1.ia64.msi

and install into C:\Python25

whats the next step . i Used 	Apache 2.0  run as a local server..

whats the next step . please say one by one i already read the
documentation but i cant get clearer.

how to configure apache where i want to configure .
if any files want to copy in to apache folder, wahts the procedure to
start the coding pls help me am very very beginner pls spend some time
to teach how to do that.please plaes



From patrick.waldo at gmail.com  Tue Oct 16 08:45:01 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Tue, 16 Oct 2007 12:45:01 -0000
Subject: Simple Text Processing Help
In-Reply-To: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
Message-ID: <1192538701.320195.175490@v29g2000prd.googlegroups.com>

And now for something completely different...

I see a lot of COM stuff with Python for excel...and I quickly made
the same program output to excel.  What if the input file were a Word
document?  Where is there information about manipulating word
documents, or what could I add to make the same program work for word?

Again thanks a lot.  I'll start hitting some books about this sort of
text manipulation.

The Excel add on:

import codecs
import re
from win32com.client import Dispatch

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"
input = codecs.open(path, 'r','utf8')
output = codecs.open(path2, 'w', 'utf8')

NR_RE = re.compile(r'^\d+-\d+-\d+$')           #pattern for EINECS
number

tokens = input.read().split()
def iter_elements(tokens):
    product = []
    for tok in tokens:
        if NR_RE.match(tok) and len(product) >= 4:
            product[2:-1] = [' '.join(product[2:-1])]
            yield product
            product = []
        product.append(tok)
    yield product

xlApp = Dispatch("Excel.Application")
xlApp.Visible = 1
xlApp.Workbooks.Add()
c = 1

for element in iter_elements(tokens):
    xlApp.ActiveSheet.Cells(c,1).Value = element[0]
    xlApp.ActiveSheet.Cells(c,2).Value = element[1]
    xlApp.ActiveSheet.Cells(c,3).Value = element[2]
    xlApp.ActiveSheet.Cells(c,4).Value = element[3]
    c = c + 1

xlApp.ActiveWorkbook.Close(SaveChanges=1)
xlApp.Quit()
xlApp.Visible = 0
del xlApp

input.close()
output.close()



From bj_666 at gmx.net  Sun Oct 14 16:33:17 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 14 Oct 2007 20:33:17 GMT
Subject: pydev code completion problem
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
Message-ID: <5nfcodFhieq6U3@mid.uni-berlin.de>

On Sun, 14 Oct 2007 19:45:07 +0000, Lukasz Mierzejewski wrote:

> Let's assume that we have something like this:
> 
> class One:
> 	def fun(self):
> 	return 1
> 
> class Two:
> 	li = []
> 	li.append(One())
> 
> 	one = li[0]
> 	print one.fun()
> 
> 	one2 = li.pop()
> 	print one2.fun()
> 
> 	one3 = One()	
> 	print one3.fun()

Indention is messed up here.  At least the ``return`` in `One.fun()`.  And
what is class `Two` meant to do?

> Only for 'one3' variable code completion is working fine (as expected it
> show fun()).
> For 'one' code completion shows something (but not fun()).
> For 'one2' code completion shows nothing :-(
> 
> I use Eclipse 3.3.1 with PyDev 1.3.9 on Ubuntu 7.04.
> 
> Can anyone confirm or deny this behavior of PyDev?

I can confirm and it's something I would expect.  It is obvious to *you*
that there is a `One` object in that list, but it would get very quickly
very complicated for an IDE to keep track of objects if not even
impossible.

Ciao,
	Marc 'BlackJack' Rintsch


From kay.schluehr at gmx.net  Tue Oct  9 03:21:20 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Tue, 09 Oct 2007 00:21:20 -0700
Subject: ANN: generator_tools-0.1 released
Message-ID: <1191914480.705611.118330@d55g2000hsg.googlegroups.com>

Originally I came up with the idea of a pure Python implementation for
copyable generators as an ActiveState Python Cookbook recipe. Too bad,
it was badly broken as Klaus M?ller from the SimPy project pointed
out. Two weeks and lots of tests later I got finally a running version
that works not only in the very most simple use cases. As the code
size increased it turned out to not really fit anymore into the
"recipe" category and I created a package called "generator_tools".

generator_tools-0.1 is available for both Python 2.5 and Python 3.0
(!)

The generator_tools package can be downloaded from PyPI

    http://pypi.python.org/pypi/generator_tools/0.1

More information is presented on my project homepage

    http://www.fiber-space.de

Documentation is also included in the distribution.

Usage:
----------

from generator_tools.copygenerators import*
from generator_tools.picklegenerators import*

def f(start):
	i = start
	while i<start+10:
		yield i
		i+=1

>>> f_gen = f(5)
>>> f_gen.next()   # or next(f_gen) in Python 3.0
5
>>> f_gen.next()
6
>>> g_gen = copy_generator(f_gen)
>>> h_gen = copy_generator(f_gen)
>>> g_gen.next()
7
>>> h_gen.next()
7
>>> pickler = GeneratorPickler("test.pkl")
>>> pickler.pickle_generator(g_gen)
>>> k_gen = pickler.unpickle_generator()
>>> list(g_gen) == list(k_gen)
True



From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 29 16:02:46 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 21:02:46 +0100
Subject: simple question on dictionary usage
In-Reply-To: <4724D474.1020203@v.loewis.de>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<13i6hgrqjs22n7b@corp.supernews.com>
	<ffvob7$1kac$1@stationair.kjsl.com> <4724D474.1020203@v.loewis.de>
Message-ID: <47263c93$0$26727$426a34cc@news.free.fr>

Martin v. L?wis a ?crit :
>>>egt = {}
>>>for key in record:
>>>   if key.startswith('E'):
>>>       egt[key] = record[key]
>>
>>I actually had come up with something like this, but thought it wasn't
>>quite as pythonish as it should be.  It is certainly much more readable
>>to a neophyte to python.
> 
> 
> My recommendation: forget about the comprehension-based ones. It *is*
> Pythonic to have the code readable to a neophyte; there is no price to
> win for shortness or cuteness.

While I wholefully agree that readability is not something to 
undervalue, I would not bash out list-comps (or generator-expressions, 
as is the case below) based solutions for such a simple use-case. 
Readability is not dumbness neither, and even if list-comps/generator 
expression may be something new for most Python newbies, they *are* by 
now the canonical, idiomatic Python way in this situation.

> 
>>>egt = dict((k, v) for k, v in record.iteritems() if k.startswith('E'))
>>
>>This is what I was looking for.  I thought I had seen something simular
>>to this in one of the tutorials I had read, but couldn't seem to find it.
> 
> 
> And you consider this readable? I find it way too complex.

As far as I'm concerned, I do find this solution much more readable than 
it's more imperative counterpart.


From DustanGroups at gmail.com  Wed Oct 10 21:05:48 2007
From: DustanGroups at gmail.com (Dustan)
Date: Thu, 11 Oct 2007 01:05:48 -0000
Subject: hi every one
In-Reply-To: <1192061976.687169.298700@o3g2000hsb.googlegroups.com>
References: <1192061976.687169.298700@o3g2000hsb.googlegroups.com>
Message-ID: <1192064748.721705.189070@19g2000hsx.googlegroups.com>

On Oct 10, 7:19 pm, kasim <kasimmomi... at gmail.com> wrote:
> Dear ______,


>>> ______.dear()
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    ______.dear()
NameError: name '______' is not defined

>>> ______ = self

>>> ______.dear()
Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    ______.dear()
TypeError: dear() takes at least 3 arguments (1 given)

>>> ______.dear(sender = 'kasim', message = snipped_message)
Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    ______.dear('kasim')
ValueError: Received spam

>>> ______.dear(sender = 'ka$im', message = modified_message)



From rcdailey at gmail.com  Sun Oct 21 15:50:37 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Sun, 21 Oct 2007 14:50:37 -0500
Subject: C++ version of the C Python API?
In-Reply-To: <471B8711.1020509@v.loewis.de>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
Message-ID: <496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>

On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
> > Is there a C++ version of the C Python API packaged with python 2.5?
>
> Stargaming has already mentioned the fine points; the first answer is:
> yes, the API packaged python 2.5 can be used with C++. It is a C++
> version of the same API as it adds proper extern "C" declarations around
> all prototypes, and it was specifically cleaned up (ten years ago)
> to work with C++.
>
> This API does not make use of many of the C++ features, including
> classes, templates, or overloading.
>
> Regards,
> Martin
>

Well C++ implicitly includes OOP since that is the foundation of the
language. I was more or less asking if there was an object oriented
version of the Python embedded API or perhaps an OO wrapper. However
it doesn't seem that way, so I may have to make my own.

Thanks for the responses.


From bbands at gmail.com  Tue Oct 23 18:44:30 2007
From: bbands at gmail.com (BBands)
Date: Tue, 23 Oct 2007 22:44:30 -0000
Subject: name space problem
Message-ID: <1193179470.243479.53270@q3g2000prf.googlegroups.com>

An example:

class classA:
    def __init__(self):
        self.b = 1

def doStuff():
    some calcs
    a..b = 0

a = classA():
print a.b
doStuff()
print a.b

That works as hoped, printing 1, 0.

But, if I move doStuff to another module and:

import doStuff

class classA:
    def __init__(self):
        self.b = 1

a = classA()
print a.b
doStuff.doStuff()
print a.b

I get a 1 printed and an error: NameError: global name 'a' is not
defined

I think this is a name space issue, but I can't grok it.

Thanks in advance,

     jab



From george.sakkis at gmail.com  Tue Oct 16 02:34:56 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 16 Oct 2007 06:34:56 -0000
Subject: groupby() seems slow
In-Reply-To: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
Message-ID: <1192516496.148265.103880@e9g2000prf.googlegroups.com>

On Oct 15, 11:02 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
> I'm applying groupby() in a very simplistic way to split up some data,
> but when I timeit against another method, it takes twice as long.  The
> following groupby() code groups the data between the "</tr>" strings:
>
> data = [
> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
> ]
>
> import itertools
>
> def key(s):
>     if s[0] == "<":
>         return 'a'
>     else:
>         return 'b'
>
> def test3():
>
>     master_list = []
>     for group_key, group in itertools.groupby(data, key):
>         if group_key == "b":
>             master_list.append(list(group) )
>
> def test1():
>     master_list = []
>     row = []
>
>     for elmt in data:
>         if elmt[0] != "<":
>             row.append(elmt)
>         else:
>             if row:
>                 master_list.append(" ".join(row) )
>                 row = []
>
> import timeit
>
> t = timeit.Timer("test3()", "from __main__ import test3, key, data")
> print t.timeit()
> t = timeit.Timer("test1()", "from __main__ import test1, data")
> print t.timeit()
>
> --output:---
> 42.791079998
> 19.0128788948
>
> I thought groupby() would be faster.  Am I doing something wrong?

Yes and no. Yes, the groupby version can be improved a little by
calling a builtin method instead of a Python function. No, test1 still
beats it hands down (and with Psyco even further); it is almost good
as it gets in pure Python.

FWIW, here's a faster and more compact version with groupby:

def test3b(data):
    join = ' '.join
    return [join(group) for key,group in
            itertools.groupby(data, "</tr>".__eq__)
            if not key]


George



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 00:18:54 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 01:18:54 -0300
Subject: Easiest way to get exit code from os.popen()?
References: <1193252864.957914.305300@t8g2000prg.googlegroups.com>
Message-ID: <op.t0xx9sgnx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Wed, 24 Oct 2007 16:07:44 -0300, mrstephengross  
<mrstephengross at hotmail.com> escribi?:

> Hi folks. I'm using os.popen() to run a command; according to the
> documentation, the filehandle.close() oepration is suppsoed to return
> the exit code. However, when I execute something like "exit 5",
> close() returns 1280. Here's the code:
>
>   pipe = os.popen("exit 5")
>   print pipe.close() # prints 1280
>
> Am I doing something wrong? Is there an easier way to get the exit
> code?

Read the docs again...

-- 
Gabriel Genellina



From gherzig at fmed.uba.ar  Fri Oct  5 10:00:11 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Fri, 05 Oct 2007 11:00:11 -0300
Subject: migrating to packages
In-Reply-To: <47060d9a$0$30531$426a74cc@news.free.fr>
References: <4703C661.50009@fmed.uba.ar>	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>	<mailman.1488.1191461205.2658.python-list@python.org>	<47045b29$0$11005$4c368faf@roadrunner.com>	<mailman.1530.1191526997.2658.python-list@python.org>
	<47060d9a$0$30531$426a74cc@news.free.fr>
Message-ID: <4706436B.9020609@fmed.uba.ar>

Bruno Desthuilliers wrote:

>Gerardo Herzig a ?crit :
>  
>
>>Carl Bank a ?crit :
>>    
>>
>>>Add these lines in __init__.py:
>>>
>>>from MYCLASSES.A import A
>>>from MYCLASSES.B import B
>>> 
>>>
>>>      
>>>
>>Ummm, that works indeed, but forces me to import all (more than A and B) 
>>classes, rigth?
>>    
>>
>
>Why so ?
>
>  
>
If the original MYCLASSES.py has 5 different classes ,say A,B,C,D,E , 
each one has to be imported (as A and B) in order to be used for the 
client code. The thing is, there are more than 5 classes, and looks like 
a lot of unnecesary work to me, since a particular program can use 1,2, 
or 3 classes at the time....Thats why im watching the way to override 
the `import statement'.......

Damn client code!!!

Gerardo


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 11 13:13:52 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 11 Oct 2007 19:13:52 +0200
Subject: Keeping track of subclasses and instances?
In-Reply-To: <1192070467.891430.127260@o80g2000hse.googlegroups.com>
References: <fejpo9$vm$1@news1.carnet.hr>
	<t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>
	<fejtcg$9k1$1@news1.carnet.hr>
	<1192070467.891430.127260@o80g2000hse.googlegroups.com>
Message-ID: <470e5992$0$14460$426a34cc@news.free.fr>

George Sakkis a ?crit :
(snip)

> Anyway, here's something to get you
> started; all a user has to do is derive (directly or indirectly) from
> InstanceTracker and, if a class C defines __init__,
> super(C,self).__init__() should be called explicitly:

Actually, you don't even need that restriction - just move the tracking 
code from __init__ to __new__.

> 
> from collections import deque
> from weakref import WeakKeyDictionary
> 
> class InstanceTracker(object):
       def __new__(cls, *args, **kw):
           try:
                all = cls.__dict__['__instances__']
           except KeyError:
                cls.__instances__ = all = WeakKeyDictionary()
           self = super(InstanceTracker, self).__new__(cls)
           all[self] = None
           return self

(NB : untested)


From arkanes at gmail.com  Mon Oct  8 16:49:54 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 8 Oct 2007 15:49:54 -0500
Subject: Python + Shoutpy + Twisted Locks
In-Reply-To: <1191752909.941272.254560@y42g2000hsy.googlegroups.com>
References: <1191570955.158128.326560@57g2000hsv.googlegroups.com>
	<mailman.1605.1191637291.2658.python-list@python.org>
	<1191752909.941272.254560@y42g2000hsy.googlegroups.com>
Message-ID: <4866bea60710081349n36ffeb29x35d6d2b68cbdec46@mail.gmail.com>

On 10/7/07, Michel Albert <exhuma at gmail.com> wrote:
> On Oct 6, 4:21 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar> wrote:
> > En Fri, 05 Oct 2007 04:55:55 -0300, exhuma.twn <exh... at gmail.com> escribi?:
> >
> > > [...] What I found
> > > is that "libshout" is blocking, which should be fine as the whole
> > > thing runs in it's separate thread. But the application hangs
> > > nevertheless while streaming. This effectively blocks out the other
> > > thread that checks the player status, which then fails to append new
> > > songs to the queue. So only one song is played when streaming.
> >
> > > The other threads in my application run fine and don't block the rest
> > > of the app. So I guess, that the main problem is that blocking occurs
> > > "outside" the python world and "inside" the libshout world.
> >
> > Only one thread at a time may be executing Python code; the Global
> > Interpreter Lock (GIL) ensures the mutual exclusion. Extension modules
> > (written in C) may use the macros
> > Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS to release/acquire the GIL
> > before/after an external blocking call.
> > I don't know libshout, or how you are doing the binding python-libshout,
> > but if your analysis is correct it means that the code is not releasing
> > the GIL at the appropiate points.
> >
> > --
> > Gabriel Genellina
>
> Hmmm... ok. I suppose rewriting the whole thing using twisted's
> deferreds could then solve the problem. Which are basically nothing
> more than callbacks with a weird name ;) Unfortunately this means that
> I have to re-think a lot. But in the end I suppose it will pay off.
>
> Thanks for taking the time and reading my little essay Gabriel ;)
>


Using Twisted won't help if the libshout calls are really blocking the
main thread. You need to fix the libshout wrapper to release the GIL
when it makes blocking C calls.

I also believe that Twisted has a native (perhaps only
semi-functional?) shoutcast protocol implementation, so a pure-python
implementation might be possible as well.


From stefan.behnel-n05pAM at web.de  Tue Oct 16 09:01:47 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Tue, 16 Oct 2007 15:01:47 +0200
Subject: Python's coming... from unexpected angles.
In-Reply-To: <877iln488x.fsf@benfinney.id.au>
References: <5njcjpFil587U1@mid.uni-berlin.de> <87fy0b4e0e.fsf@benfinney.id.au>
	<op.t0aalvq4wepdt4@ericb.pragmadev>
	<877iln488x.fsf@benfinney.id.au>
Message-ID: <4714b644$0$30378$9b4e6d93@newsspool4.arcor-online.net>

Ben Finney wrote:
> "Eric Brunel" <see.signature at no.spam> writes:
> 
>> Well, I'd definetely vote for a name change for PyPy, as in french,
>> it's pronounced "pee-pee", and yes, it means what you think it
>> means... ;-)
> 
> Anyway, the pronunciation of "Python" (and hence the "Py" in "PyPy")
> is however you pronounce that word in the name of the comedy troupe,
> Monty Python. That's where the name originates, after all.

Don't forget you're replying to a french native speaker here. They do not
pronounce "Monty Python" the way you'd think they do, so the above isn't
actually of any help at all.

Stefan


From besturk at gmail.com  Thu Oct 25 07:00:44 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 25 Oct 2007 04:00:44 -0700
Subject: Parallel insert to postgresql with thread
Message-ID: <1193310044.750654.157320@22g2000hsm.googlegroups.com>

Hi..
I use the threading module for the fast operation. But i have some
problems..
This is my code sample:
=================
conn =
psycopg2.connect(user='postgres',password='postgres',database='postgres')
cursor = conn.cursor()
class paralel(Thread):
    def __init__ (self, veriler, sayii):
        Thread.__init__(self)
    def run(self):
         save(a, b, c)

def save(a,b,c):
            cursor.execute("INSERT INTO keywords (keyword) VALUES
('%s')" % a)
            conn.commit()
            cursor.execute("SELECT
CURRVAL('keywords_keyword_id_seq')")
            idd=cursor.fetchall()
            return idd[0][0]

def start(hiz):
    datas=[........]
    for a in datas:
        current = paralel(a, sayii)
        current.start()
==================
And it gives me different errors to try parallel insert. My querys
work in normal operation but in paralel don't work.
How can i insert data to postgresql the same moment ?
errors:
no results to fetch
cursor already closed



From byte8bits at gmail.com  Fri Oct  5 17:48:24 2007
From: byte8bits at gmail.com (brad)
Date: Fri, 05 Oct 2007 17:48:24 -0400
Subject: Program with wx in Linux and Windows
In-Reply-To: <13gcj73cocev2e0@corp.supernews.com>
References: <fe2ii3$4ac$1@aioe.org> <13gcj73cocev2e0@corp.supernews.com>
Message-ID: <fe6bfc$h79$1@solaris.cc.vt.edu>

Grant Edwards wrote:

> I've been using wxPython for cross platofrm stuff on Linux and
> Windows for 5+ years now for at least a dozen programs. I never
> had any problems like the one you describe (though "appears
> disordered" isn't much of a problem description).  I write/test
> on Linux, and the programs pretty much "just work" on Windows.

That sums up my experience with wxPython as well. I've never had any 
problems. I develop on Linux and run on Linux, Mac and Windows.

Brad


From llothar at web.de  Sun Oct 21 11:31:45 2007
From: llothar at web.de (llothar)
Date: Sun, 21 Oct 2007 08:31:45 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <471b64b2$0$90272$14726298@news.sunsite.dk>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
	<471b64b2$0$90272$14726298@news.sunsite.dk>
Message-ID: <1192980705.698811.128060@i38g2000prf.googlegroups.com>

On 21 Okt., 21:39, Arne Vajh?j <a... at vajhoej.dk> wrote:

> That level of activity could be considered dead.

For me at least 2% of the total line count should be changed
to call it non dead.

I don't say it it not used anymore for users it might be
not dead but this is not the point under discussion here.




From deets at nospam.web.de  Wed Oct 17 10:06:52 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 16:06:52 +0200
Subject: Order by value in dictionary
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
Message-ID: <5nmj7sFiouurU3@mid.uni-berlin.de>

Diez B. Roggisch wrote:

> Abandoned wrote:
> 
>> Hi..
>> I have a dictionary like these:
>> a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
>> element
>> I want to sort this by value and i want to first 100 element..
>> Result must be:
>> [b, a, d, c .....] ( first 100 element)
>> 
>> I done this using FOR and ITERATOR but it tooks 1 second and this is
>> very big time to my project.
>> I want to learn the fastest method..
> 
> That is the fastest method, unless you write your own ordered dict
> implementation that sorts by value. But that will most probably lose the
> time when holding up the invariant when inserting key/values into the
> dictionary.

Actually, I somehow read the FOR and ITERATOR above as something like this:

entries = sorted(a.items(), key=lambda v: v[1])[:100]

The gist of my statement above is nontheless the same: if you want sorted
results, you need to sort... 

Diez


From travis.brady at gmail.com  Tue Oct 23 10:08:28 2007
From: travis.brady at gmail.com (Travis Brady)
Date: Tue, 23 Oct 2007 10:08:28 -0400
Subject: parsing the output from matlab
In-Reply-To: <BLU107-W4B71C65B6428BCFFD16FAB49A0@phx.gbl>
References: <Sq4Ti.2548$QP4.156@fe03.usenetserver.com>
	<BLU107-W4B71C65B6428BCFFD16FAB49A0@phx.gbl>
Message-ID: <fb0734860710230708m14d8e408re7476072e1de475a@mail.gmail.com>

On 10/22/07, wang frank <fw3 at hotmail.co.jp> wrote
>
>
> I have a big log file generated from matlabe, for each variable, it print
> the name of the variable and an empty line and then the value. such as:
>
> x1 =
>
>     0.1
>
> y =
>
>    7
>
> z =
>
>    6.7
>
> x1 =
>
>    0.5
>
> I want to use python to parse the file and selectively print out the
> vairable and its value. For example, I want to print out all the value
> related with x1, so the output will be
>
> x1 = 0.1
> x1 = 0.5.
>
>

Here is a fairly naive version with re named groups that should handle the
example you pasted.
In [62]: import re

In [63]: px = re.compile('(?P<variable>\w+)\s=\s+(?P<value>\d.*\d*)')

In [64]: for var in px.finditer(s):
    print "%s = %s" %(var.group('variable'), var.group('value'))
   ....:
   ....:
a = 0.1
y = 7
z = 6.7
x1 = 0.5

To filter for only the x1's just test for the group named 'variable':

In [66]: for var in px.finditer(s):
   ....:     if var.group('variable')=='x1':
   ....:         print "%s = %s" %(var.group('variable'), var.group
('value'))
   ....:
   ....:
x1 = 0.5

But I'm betting these files get more complex than just the snippet you
included, in which case it's probably worth looking at pyparsing
http://pyparsing.wikispaces.com/ and regular expressions.




-- 
Travis Brady
http://travisbrady.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/26d48f7f/attachment.html>

From sjdevnull at yahoo.com  Thu Oct 11 10:21:31 2007
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: Thu, 11 Oct 2007 07:21:31 -0700
Subject: Declarative properties
In-Reply-To: <1192107893.492826.233730@d55g2000hsg.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
Message-ID: <1192112491.859246.148620@19g2000hsx.googlegroups.com>

Artur Siekielski wrote:
> On Oct 11, 2:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> > But why?  Default getters and setters are unnecessary and if you need
> > something other than the default you need to write it anyway more
> > explicitly.
>
> I see some problems with your approach:
>
> 1. If I use instance field 'name' which is accessed directly by other
> classes,
> and later I decide to implement nonstandard getter, I must refactor
> 'Person' class
> and in some places change 'name' to '_name' (assuming this is now the
> field's name).
> The problem is that I cannot automatically change 'name' to '_name'
> everywhere, because
> in some places I want public property value (eg. validated and
> formatted), and in other
> places raw property value.

In practice, it turns out to be a lot less work to deal with that
occasionally than to always deal with lugging around internal
attributes and external properties when they're really not needed.  By
writing everything as properties up front you're just creating more
work for yourself, and it's generally considered bad practice in
Python to have default getters/setters (whether part of a property or
not).

> 2. Properties define (a part of) public interface of a class. When
> using fields for public
> access, you must tell this explicitly in documentation, or use name
> convention.

Property vs. attribute doesn't make any difference here: both of them
are public, and part of the external interface, unless they're named
with a leading underscore.

Making something a property doesn't make it any more or less a part of
the public interface.

> 3. Using properties as first-class objects gives possibilities to use
> declarative approaches
> for constructing them.

This doesn't make any sense.  Properties and attributes are both
objects in python.



From raj.amal at gmail.com  Mon Oct  1 05:25:08 2007
From: raj.amal at gmail.com (Amal)
Date: Mon, 1 Oct 2007 14:55:08 +0530
Subject: Html unit.
Message-ID: <3bfbb0bb0710010225m524d433cw441345bc81825092@mail.gmail.com>

Is there something like HTML unit in Python ? For testing Web applications.

Amal.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071001/fab5a9f7/attachment.html>

From pavlovevidence at gmail.com  Fri Oct 26 22:28:31 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Fri, 26 Oct 2007 19:28:31 -0700
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <mailman.491.1193440660.13605.python-list@python.org>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<mailman.491.1193440660.13605.python-list@python.org>
Message-ID: <1193452111.090356.44160@v3g2000hsg.googlegroups.com>

On Oct 26, 7:17 pm, "J. Cliff Dyer" <j... at sdf.lonestar.org> wrote:
> Matimus wrote:
> >> - Traling characters at the end of a literal are already used (the L
> >>   for long).
>
> > The trailing L is going away in Python 3.0. For your consideration may
> > I suggest a '$' prefix. Though, I'm not sure I even support the idea
> > of a decimal literal, and I'm not even sure if I support the idea of
> > using a prefix '$' to identify that literal, it seems somewhat
> > fitting.
>
> > So...
> > Decimal("12.34") -> $12.34
>
> > Pros:
> >  - Easier to see than appended character (I think)
> >  - Notation is fitting when dealing with monetary values
> >  - Easy to remember
> > Cons:
> >  - Maybe too clever for its own good. Some people may be confused to
> > find out that it isn't actually a monetary type.
> > I'm sure there are more...
>
> - Too U.S. centric.  Euro would be a slight improvement, as it doesn't
> privilege one country, but still too region-centric.  Generic currency
> marker from ISO 8859-1 would be even less unnecessarily specific, but
> also too obscure.

FYI: The $ sign is used to denote currency in many countries; as a
rule of thumb countties that call their currency "dollars" or "pesos"
use the $.  So Mexico, Canada, Australia, much of Latin America, much
of the Pacific, not to mention countries in Africa (Zimbabwe) and Asia
(Singapore).

It's certainly less region-specific than the Euro is.


Carl Banks



From ptmcg at austin.rr.com  Sun Oct  7 17:24:32 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Sun, 07 Oct 2007 14:24:32 -0700
Subject: Problem of Readability of Python
In-Reply-To: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <1191792272.997671.42610@57g2000hsv.googlegroups.com>

On Oct 7, 1:07 pm, Licheng Fang <fanglich... at gmail.com> wrote:
> Python is supposed to be readable, but after programming in Python for
> a while I find my Python programs can be more obfuscated than their C/C
> ++ counterparts sometimes. Part of the reason is that with
> heterogeneous lists/tuples at hand, I tend to stuff many things into
> the list and *assume* a structure of the list or tuple, instead of
> declaring them explicitly as one will do with C structs. So, what used
> to be
>
> struct nameval {
>     char * name;
>    int val;
>
> } a;
>
> a.name = ...
> a.val = ...
>
> becomes cryptic
>
> a[0] = ...
> a[1] = ...
>
> Python Tutorial says an empty class can be used to do this. But if
> namespaces are implemented as dicts, wouldn't it incur much overhead
> if one defines empty classes as such for some very frequently used
> data structures of the program?
>
> Any elegant solutions?

"""Just use a single empty class (such as the AttributeContainer
below)
   and then use different instances of the class for different sets
   of name/value pairs.  (This type of class also goes by the name
Bag,
   but that name is too, um, nondescript for me.)  You can see from
the
   example that there is no requirement for names to be shared,
unshared,
   common, or unique.

   -- Paul"""

class AttributeContainer(object):
    pass

a = AttributeContainer()
a.name = "Lancelot"
a.favorite_color = "blue"

b = AttributeContainer()
b.name = "European swallow"
b.laden = true
b.airspeed = 20





From besturk at gmail.com  Thu Oct 18 11:53:41 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 08:53:41 -0700
Subject: Convert string to command..
In-Reply-To: <5npdnsFj14e6U3@mid.uni-berlin.de>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<5npdnsFj14e6U3@mid.uni-berlin.de>
Message-ID: <1192722821.698224.164120@e34g2000pro.googlegroups.com>

On Oct 18, 6:51 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Thu, 18 Oct 2007 08:41:30 -0700, Abandoned wrote:
> > import cPickle as pickle
> > a="{2:3,4:6,2:7}"
> > s=pickle.dumps(a, -1)
> > g=pickle.loads(s);
> > print g
> > '{2:3,4:6,2:7}'
>
> > Thank you very much for your answer but result is a string ??
>
> In Python terms yes, strings in Python can contain any byte value.  If you
> want to put this into a database you need a BLOB column or encode it as
> base64 or something similar more ASCII safe.
>
> Ciao,
>         Marc 'BlackJack' Rintsch

'{2:3,4:6,2:7}' already in database, i select this and convert to real
dictionary..



From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 20 00:27:50 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 20 Oct 2007 04:27:50 -0000
Subject: __main__ : What is this?
References: <mailman.234.1192836549.13605.python-list@python.org>
	<1192839982.488484.102860@e34g2000pro.googlegroups.com>
Message-ID: <13hj0u61d8n795@corp.supernews.com>

On Sat, 20 Oct 2007 00:26:22 +0000, Matimus wrote:

> The common pattern:
> 
> if __name__ == "__main__":
>   # do stuff
> 
> IMHO better written:
> 
> if "__main__" == __name__:
>     # do stuff

Apart from looking weird, what's the difference?


-- 
Steven.


From vmaslov at swsoft.com  Tue Oct  9 06:13:34 2007
From: vmaslov at swsoft.com (Vyacheslav Maslov)
Date: Tue, 09 Oct 2007 17:13:34 +0700
Subject: PyDev 1.3.9 code compleition trouble
Message-ID: <470B544E.5070209@swsoft.com>

Hi!

I use Pydev 1.3.9 and notice issue related to code completion. I give an 
example

BaseClass.py:

class BaseClass:
     def someMethod(x):
         return x+x

DerivedClass.py:

import BaseClass

class DerivedClass(BaseClass.BaseClass):
     def newMethod(self):
         print self.someMethod(4)


I try to use code completion in class DerivedClass inside method 
"newMethod", after typing "self." and pushing ctrl+space completion 
dialog propose substitution only for method "newMethod". However, i 
expect that method defined in BaseClass called "someMethod" should be 
proposed also as well. Why this doesn't work?


From ptmcg at austin.rr.com  Fri Oct  5 11:27:54 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Fri, 05 Oct 2007 08:27:54 -0700
Subject: Boolean parser..
In-Reply-To: <1191585605.393165.72100@k79g2000hse.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
	<1191583772.041261.71790@19g2000hsx.googlegroups.com>
	<1191585605.393165.72100@k79g2000hse.googlegroups.com>
Message-ID: <1191598074.893657.233250@57g2000hsv.googlegroups.com>

On Oct 5, 7:00 am, Abandoned <best... at gmail.com> wrote:
> http://pyparsing.wikispaces.com/space/showimage/searchparser.pythis
> is searchparser but i can't understant to use this.
> Can anybody explain this how to use ?

The code demonstrates a testing example, named TestParser, which
inherits from SearchQueryParser.  As mentioned in the docstrings at
the top, to use this code, import the module and define your own class
to inherit from SearchQueryParser.  Then override the Get... methods,
as is done in TestParser.  Each Get method returns a set, and all sets
are then ANDed and ORed according to the input search string.

Here's a simple example, a database of fruit-based products.  To keep
things simple, each product will come from a single fruit, and the
name of the fruit will be at the beginning of the product's name, for
instance "grape juice" is made from the fruit named "grape".

from searchparser import SearchQueryParser

products = [ "grape juice", "grape jelly", "orange juice", "orange
jujubees",
    "strawberry jam", "prune juice", "prune butter", "orange
marmalade",
    "grapefruit juice" ]

class FruitSearchParser(SearchQueryParser):
    def GetWord(self, word):
        return set( p for p in products if p.startswith(word + " ") )

    def GetWordWildcard(self, word):
        return set( p for p in products if p.startswith(word[:-1]) )

    def GetQuotes(self, search_string, tmp_result):
        result = Set()
        # I have no idea how to use this feature...
        return result

    def GetNot(self, not_set):
        return set( products ) - not_set


parser = FruitSearchParser()

tests = """\
    grape or orange
    grape*
    not(grape*)
    prune and grape""".splitlines()

for t in tests:
    print t.strip()
    print parser.Parse(t)
    print


Prints:

grape or orange
set(['orange juice', 'grape juice', 'orange marmalade', 'orange
jujubees', 'grape jelly'])

grape*
set(['grapefruit juice', 'grape juice', 'grape jelly'])

not(grape*)
set(['orange jujubees', 'orange juice', 'prune butter', 'orange
marmalade', 'strawberry jam', 'prune juice'])

prune and grape
set([])





From cokofreedom at gmail.com  Wed Oct 17 10:00:46 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Wed, 17 Oct 2007 14:00:46 -0000
Subject: Order by value in dictionary
In-Reply-To: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
Message-ID: <1192629646.801436.60150@k35g2000prh.googlegroups.com>

On Oct 17, 3:39 pm, Abandoned <best... at gmail.com> wrote:
> Hi..
> I have a dictionary like these:
> a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
> element
> I want to sort this by value and i want to first 100 element..
> Result must be:
> [b, a, d, c .....] ( first 100 element)
>
> I done this using FOR and ITERATOR but it tooks 1 second and this is
> very big time to my project.
> I want to learn the fastest method..
>
> I'm sorry my bad english.
> Please help me.
> King regards..

I take it you did something like this

 >>> items = d.items()
 >>> items = [(v, k) for (k, v) in items]
 >>> items.sort()
 >>> items.reverse()		# so largest is first
 >>> items = [(k, v) for (v, k) in items]

?



From fperez.net at gmail.com  Fri Oct 12 23:47:52 2007
From: fperez.net at gmail.com (Fernando Perez)
Date: Fri, 12 Oct 2007 21:47:52 -0600
Subject: Yet another comparison of Python Web Frameworks
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
Message-ID: <fepf58$439$1@sea.gmane.org>

Massimo Di Pierro wrote:

> P.S. Michele Simionato. I have heard your name before? Is it possible
> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
> and there is not many of us.

More than you think, it seems.  Some of us were even using python to process
Lattice QCD computations years ago ;-)

Cheers,

f



From garrickp at gmail.com  Wed Oct 17 11:20:55 2007
From: garrickp at gmail.com (Falcolas)
Date: Wed, 17 Oct 2007 08:20:55 -0700
Subject: HTML Parser for Jython
Message-ID: <1192634455.095171.187570@i13g2000prf.googlegroups.com>

Does anybody know of a decent HTML parser for Jython? I have to do
some screen scraping, and would rather use a tested module instead of
rolling my own.

Thanks!

GP



From pavlovevidence at gmail.com  Wed Oct 10 12:52:26 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 10 Oct 2007 09:52:26 -0700
Subject: Singleton
In-Reply-To: <13gprb0dd0b2u33@corp.supernews.com>
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<13gplgh75hot354@corp.supernews.com>
	<1192024635.416697.210620@o3g2000hsb.googlegroups.com>
	<13gprb0dd0b2u33@corp.supernews.com>
Message-ID: <1192035146.615785.234330@57g2000hsv.googlegroups.com>

On Oct 10, 11:18 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> Of course, if there is some other meaning to the OP's post, then possibly
> I've completely misunderstood it. Would you mind telling me what you've
> seen that the rest of us haven't?

I read far enough to see that OP had mischaracterized the problem and
that it wasn't a problem with singletons at all; it was a problem with
importing.

And that it would still manifiest itself with borgs.


Carl Banks



From roman.yakovenko at gmail.com  Thu Oct 18 15:07:32 2007
From: roman.yakovenko at gmail.com (Roman Yakovenko)
Date: Thu, 18 Oct 2007 21:07:32 +0200
Subject: Embedded Boost.Python Enum
In-Reply-To: <1192687157.036646.234790@t8g2000prg.googlegroups.com>
References: <1192687157.036646.234790@t8g2000prg.googlegroups.com>
Message-ID: <7465b6170710181207s20f74a82i3c326fd946e2a5da@mail.gmail.com>

On 10/18/07, Cory <Cory.Leach at gmail.com> wrote:
>
> Hi,
>
> I have a hopefully quick question about how to use Boost.Python to
> export an Enum.
> I am embedding python in C++ and am currently exporting my classes in
> the following way:
>
> nameSpace["OBJECT"] = class_<OBJECT>("OBJECT")
>         .def("getType", &OBJECT::getType)
>         .def("setSprite", &OBJECT::setSprite);
>
> So following this, I assumed that when exporting an enum the following
> should work:
>
> nameSpace["OBJECT_TYPE"] = enum_<OBJECT_TYPE>("OBJECT_TYPE")
>                         .value("GENERIC_OBJECT",GENERIC_OBJECT)
>                         .value("MAP_OBJECT",MAP_OBJECT)
>                         .value("TOTAL_OBJECT_TYPES",TOTAL_OBJECT_TYPES)
>                         .export_values();
>
> while the above compiles, it causes the following run time exception:
>
> AttributeError: 'NoneType' object has no attribute 'OBJECT_TYPE'
>
> I took a look at the documentation and the only explanation I found
> for enum appeared to be for extending python with modules. using the
> following form:
>
> BOOST_PYTHON_MODULE(enums)
> {
>     enum_<color>("color")
>         .value("red", red)
>         .value("green", green)
>         .export_values()
>         .value("blue", blue)
>         ;
>
> }


I think you should read next documentation:

http://boost.org/libs/python/doc/v2/scope.html

I COULD do the above, I would prefer the first method if possible. I
> however do not know how to import the module if it is statically
> linked because doing a simple import does not work and I am not
> familiar enough with the boost.python library, Python C API, or Python
> itself to know how to set it up. So My question is this:
>
> How can I either make the first method of adding an enum work and not
> throw the exception, OR once I create the BOOST_PYTHON_MODULE in an
> embedded python c++ program how to I then import that module into my
> embedded python?


http://boost.org/libs/python/doc/tutorial/doc/html/python/embedding.html
Embedding example:
http://svn.boost.org/trac/boost/browser/trunk/libs/python/test/import_.cpp

HTH

-- 
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071018/eac1e321/attachment.html>

From sjmachin at lexicon.net  Mon Oct  1 22:20:43 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 01 Oct 2007 19:20:43 -0700
Subject: Limits on search length
In-Reply-To: <mailman.1354.1191259433.2658.python-list@python.org>
References: <mailman.1354.1191259433.2658.python-list@python.org>
Message-ID: <1191291643.974262.116480@d55g2000hsg.googlegroups.com>

On Oct 2, 3:16 am, Daryl Lee <d... at altaregos.com> wrote:
> I am trying to locate all lines in a suite of files with quoted strings of
> particular lengths.  A search pattern like r'".{15}"' finds 15-character
> strings very nicely.  But I have some very long ones, and a pattern like
> r'".{272}"' fails miserably, even though I know I have at least one
> 272-character string.
>
> In the short term, I can resort to locating the character positions of the
> quotes, but this seemed like such an elegant solution I hate to see it not
> work.  The program is given below (sans imports), in case someone can spot
> something I'm overlooking:
>
> # Example usage: search.py *.txt \".{15}\"
>
> filePattern = sys.argv[1]
> searchPattern  = sys.argv[2]

1. Learn an elementary debugging technique called "print the input".

  print "pattern is", repr(searchPattern)

2. Fix your regular expression:

>>> import re
>>> patt = r'".{15}"'
>>> patt
'".{15}"'
>>> rx = re.compile(patt)
>>> o = rx.search('"123456789012345"'); o
<_sre.SRE_Match object at 0x00B96918>
>>> o.group()
'"123456789012345"'
>>> o = rx.search('"1234567" "12345"'); o
<_sre.SRE_Match object at 0x00B96950>
>>> o.group()
'"1234567" "12345"' ########## whoops ##########
>>>

>>> patt = r'"[^"]{15}"' # or use the non-greedy ? tag
>>> rx = re.compile(patt)
>>> o = rx.search('"123456789012345"'); o
<_sre.SRE_Match object at 0x00B96918>
>>> o.group()
'"123456789012345"'
>>> o = rx.search('"1234567" "12345"'); o
>>> o.group()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: 'NoneType' object has no attribute 'group'

3. Try building scripts from small TESTED parts e.g. in this case
write a function to find all quoted strings of length n inside a given
string. If you do that, you will KNOW there is no limit that stops you
finding a string of length 272, and you can then look for your error
elsewhere.

HTH,
John



From mail at timgolden.me.uk  Wed Oct  3 05:24:02 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Wed, 03 Oct 2007 10:24:02 +0100
Subject: Subprocesses on Windows
In-Reply-To: <593915.34492.qm@web53208.mail.re2.yahoo.com>
References: <593915.34492.qm@web53208.mail.re2.yahoo.com>
Message-ID: <47035FB2.9090708@timgolden.me.uk>

Nachiket Joshi wrote:
> Well before I explain my problem, let me tell you all that 
> I am not a professional programmer and new to python too.

Welcome to the world of Python, home to professional and
non-professional programmers alike!

> I just write some scripts as and when required 

Same could be said of many of us.

> The problem is something like this. 
> I am trying to run nmap scan on my network and for 
> that I want to start multiple nmap instances (256 at once)
> togather and wait till those 256 are over before I start 
> next lot of 256 instances. 

My number one query is whether it's a great idea to
have *256* nmap instances running simultaneously.
But this is not my area, so maybe it's something people
commonly do. Howbeit, it's clear from your description
below that the problem is running *some number* of
simultaneous processes.

 > Well to test I have put in two
> nmap scans in my program and I have succeeded to start 
> both of them simultaneously (in fact one after another) by using 
> "subprocess module and Popen".  But the problem is when I run a 
> loop to start both of these nmap instances, they do start BUT 
> the script then exits to command prompt completing all the executions. 
> But this is not what I want. I want to wait till both of these nmap 
> processes are finished and then only exit from script (in fact exit 
> from that function or loop). Then only I would be able to call next 
> lot of IP Ranges to scan. I did try os.waitpid() but it gives 
> following error while running the program:

I admit I'm a bit confused both by the description and by the
code (not least because the code you're posting isn't
self-contained; it's not clear what the all-important
clas_c function is doing).

Assuming I have a (fake) nmap.py which looks like this:

<nmap.py>
import sys
print sys.argv
</nmap.py>

then your code (if I understand it) wants to do this, in concept:

<code>
import os, sys
import subprocess

TEMPLATE = "192.168.%d.%d"
for network in range (256):
   raw_input ("Network: %s - Press enter..." % (TEMPLATE % (network, 0)))

   running_processes = []
   for machine in range (256):
     # start an nmap process which does whatever and returns
     running_processes.append (
       subprocess.Popen (["python", "nmap.py", TEMPLATE % (network, machine)])
     )

   # wait until all 256 nmap processes have finished
   # before starting the next network
   while True:
     for process in running_processes:
       if process.poll () is None:
         break
     else:
       break

</code>

Have I understood correctly? If you're not sure what my code
is doing, try saving it to two files and running it to see
if it gives the result you want.

TJG


From gherzig at fmed.uba.ar  Thu Oct  4 16:22:03 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Thu, 04 Oct 2007 17:22:03 -0300
Subject: List of objects X Database
In-Reply-To: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
References: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
Message-ID: <47054B6B.3010200@fmed.uba.ar>

MindMaster32 wrote:

>I am writing a script that has to read data from an ASCII file of
>about 50 Mb and do a lot of searches and calculations with that data.
>That would be a classic problem solved by the use of a database
>(SQLite would suit just fine), but that would require the user to
>install more packages other than python itself, and that I am trying
>to avoid.
>Since the data is not too large, I wonder if there is another way to
>store all data in memory and work with it more or less like a
>database, doing searches and working with datafields.
>
>This is not clear to me how can be implemented. I thought of creating
>a class with the data structure, and creating a list of objects of
>that class, each one containing one line of data from the "database".
>
>Any thoughts or suggestions?
>
>Thanks!
>Eduardo
>
>  
>
What about shelve? It Requires some db support, yes....And what about 
just reading the file and making a dict? It is a `csv' like file, so you 
can just read it and generate a dict?

Cheers.
Gerardo


From naveen.sabapathy at gmail.com  Sat Oct 13 06:37:02 2007
From: naveen.sabapathy at gmail.com (naveen.sabapathy at gmail.com)
Date: Sat, 13 Oct 2007 03:37:02 -0700
Subject: pyserial doesn't recognize virtual serial port
In-Reply-To: <13gv50dm2m4us5c@corp.supernews.com>
References: <1192168211.911755.71940@z24g2000prh.googlegroups.com>
	<13gv50dm2m4us5c@corp.supernews.com>
Message-ID: <1192271822.767178.78650@v23g2000prn.googlegroups.com>

Hi Grant,
  It worked... I had the same suspicion and changed the port names to
COM2 and COM4 and it worked.

--NS
On Oct 12, 8:34 pm, Grant Edwards <gra... at visi.com> wrote:
> On 2007-10-12, naveen.sabapa... at gmail.com <naveen.sabapa... at gmail.com> wrote:
>
> > Hi,
> >   I am trying to use virtual serial ports to develop/test my serial
> > communication program. Running in to trouble...
>
> >   I am using com0com to create the virtual ports. The virtual ports
> > seem to be working fine when I test it with Hyperterminal.
>
> I'm not sure what you mean by "virtual ports".  I've used
> pyserial with several different network attached devices that
> provide drivers that make them appear as COMnn devices under
> windows.  I never had any problems.
>
>
>
> > I am using the example program that comes with pyserial, as below.
> > ---------------
> > import serial
> > ser = serial.Serial('CNCA0') #open virtual serial port
> > print ser.portstr            #check which port was realy used
> > ser.write("Hello")           #write a string
> > ser.close()                  #close port
> > -----------------
>
> > The following is the error message:
>
> > --------------
> > Traceback (most recent call last):
> >   File "C:\Python25\Naveen Files\TestSerial", line 2, in <module>
> >     ser = serial.Serial('CNCA0') #open first serial port
> >   File "c:\Python25\Lib\site-packages\serial\serialutil.py", line 156,
> > in __init__
> >     self.open()
> >   File "c:\Python25\Lib\site-packages\serial\serialwin32.py", line 55,
> > in open
> >     raise SerialException("could not open port: %s" % msg)
> > SerialException: could not open port: (2, 'CreateFile', 'The system
> > cannot find the file specified.')
> > --------------
>
> If you specify a filename that the OS doesn't recognize there's
> nothing pyserial can do about it.
>
> > When I try with 'COM3', which comes inbuilt in my laptop, COM3 is
> > recognized. Few other posts on the web seem to indicate pyserial
> > should work fine with virtual serial ports. What am I missing?
>
> My guess is you're not spelling the device name correctly.
> Device names under Windows are even more screwed up than the
> rest of the OS.  By default there are a limited set of devices
> with specially mapped "DOS compatible" names such as LPT1,
> COM3, etc.  My guess is that the device you're attempting to
> use doesn't have a name that's mapped to the DOS-compatible
> namespace as CNCA0.
>
> You could try using the name \\.\CNCA0
>
> Or you could try to figure otu how to map the device into the
> DOS namespace as CNCA0.
>
> You could also try running some sort of system call trace on
> HyperTerminal to find out what name it's using to open the
> device when you tell it to use port CNCA0.
>
> Or you could just give up and switch to Linux.  [That's what
> I'd recommend, personally.]
>
> --
> Grant Edwards                   grante             Yow! YOU PICKED KARL
>                                   at               MALDEN'S NOSE!!
>                                visi.com




From kyrie at uh.cu  Thu Oct 18 13:47:01 2007
From: kyrie at uh.cu (Luis Zarrabeitia)
Date: Thu, 18 Oct 2007 13:47:01 -0400
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <13hemo4beahm43a@corp.supernews.com>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<1192693425.381102.141680@i38g2000prf.googlegroups.com>
	<13hemo4beahm43a@corp.supernews.com>
Message-ID: <200710181347.01153.kyrie@uh.cu>

On Thursday 18 October 2007 09:09, Grant Edwards wrote:
> I like the solution somebody sent me via PM:
>
> def toggle():
>     while 1:
>         yield "Even"
>         yield "Odd"
>

That was me.
Sorry, list, I meant to send it to everyone but I my webmail didn't respect 
the list* headers :(.

Thanks, Grant!

-- 
Luis Zarrabeitia (aka Kyrie)
Fac. de Matem?tica y Computaci?n, UH.
http://profesores.matcom.uh.cu/~kyrie


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct  2 03:45:10 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 02 Oct 2007 09:45:10 +0200
Subject: Question about quoting style.
In-Reply-To: <mailman.1372.1191282884.2658.python-list@python.org>
References: <mailman.1366.1191268378.2658.python-list@python.org>	<470153d9$0$27239$426a74cc@news.free.fr>	<fdrr61$ipf$1@daisy.noc.ucla.edu>
	<mailman.1372.1191282884.2658.python-list@python.org>
Message-ID: <4701f701$0$14269$426a74cc@news.free.fr>

Gabriel Genellina a ?crit :
> En Mon, 01 Oct 2007 19:10:11 -0300, James Stroud <jstroud at mbi.ucla.edu> 
> escribi?:
> 
>> Bruno Desthuilliers wrote:
>>> First point is that Python has no "variable interpolation".
>>
>> If you squint, it kind of does*:
>>
>>     >>> print '%(language)s has %(#)03d quote types.' % \
>>               {'language': "Python", "#": 2}
>>     Python has 002 quote types.
>>
>> You might think if the dict as a name space and the formatting operation
>> as performing interpolation--but this take on formatting might be a 
>> stretch.
> 
> Stretching more:
> 
> py> language="Python"
> py> number=4
> py> print '%(language)s has %(number)d quote types.' % locals()
> Python has 4 quote types.
> 
> Or even more:
> 
> py> from string import Template
> py> print Template('$language has $number quote 
> types.').substitute(locals())
> Python has 4 quote types.
> 

Answering to James, Carsten and Gabriel : sorry guys, but I definitively 
won't count string formatting as variable interpolation - even if, when 
used with locals(), it comes very close from a practical POV (and is 
IMHO way cleaner).


From rcdailey at gmail.com  Wed Oct 10 18:03:05 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 17:03:05 -0500
Subject: for loop question
In-Reply-To: <1192051024.3388.40.camel@dot.uniqsys.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<1192047136.3388.19.camel@dot.uniqsys.com>
	<496954360710101327s7ee23520u9bb4d74833110071@mail.gmail.com>
	<1192048912.3388.27.camel@dot.uniqsys.com>
	<496954360710101403p6b057a07le3f6dd0fe03d770@mail.gmail.com>
	<1192051024.3388.40.camel@dot.uniqsys.com>
Message-ID: <496954360710101503t6ce22ba5n59db0bc88dea4b4d@mail.gmail.com>

On 10/10/07, Carsten Haese <carsten at uniqsys.com> wrote:
>
> Instead of passing the file object directly to the csv parser, pass in a
> generator that reads from the file and explicitly encodes the strings
> into UTF-8, along these lines:
>
> def encode_to_utf8(f):
>     for line in f:
>         yield line.encode("utf-8")
>
> There may be a fundamental problem with this approach that I can't
> foresee at the moment, but it's worth a try when your alternative is to
> build a Unicode-aware CSV parser from scratch.
>
> Hope this helps,


I did the following:


#####################################################################

def encode_utf8( f ):
    for line in f:
        yield line.encode( "utf-8" )

#####################################################################

def BeginLocalizationParsing( outputDir, inputRoot, inputFile ):
    f = codecs.open( inputFile, "rb", encoding="utf-16" )

    r = csv.reader( encode_utf8( f ) )
    print r.next()

#####################################################################

It worked perfectly! Thank you! I guess I don't have to make a CSV parser
after all :P
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/ec34f418/attachment.html>

From jkbiwott2002 at yahoo.com  Sun Oct 28 22:18:44 2007
From: jkbiwott2002 at yahoo.com (jkbiwott2002 at yahoo.com)
Date: Sun, 28 Oct 2007 19:18:44 -0700
Subject: New
Message-ID: <1193624324.841364.289980@v3g2000hsg.googlegroups.com>

Hi!
Am new to Python and am looking for a sample project that demonstrates
how to connect to MySQL, save data in MySQL database using a form on a
web page.

Regards,
Joseph



From byte8bits at gmail.com  Fri Oct 12 16:55:44 2007
From: byte8bits at gmail.com (brad)
Date: Fri, 12 Oct 2007 16:55:44 -0400
Subject: test if email
In-Reply-To: <13gvndj3ebgfh98@corp.supernews.com>
References: <feojgb$k16$01$1@news.t-online.com>
	<feom4s$l0h$1@solaris.cc.vt.edu>
	<13gvndj3ebgfh98@corp.supernews.com>
Message-ID: <feon0m$m0k$1@solaris.cc.vt.edu>

Grant Edwards wrote:

> If you send an e-mail to an address and you get a response,
> then it's valid.

No response could be valid too. The user may not respond. For automated 
tasks, I go with the no bounce method. When things start bouncing, do 
domething, but so long as they don't bounce do something else.


From exarkun at divmod.com  Fri Oct 12 13:10:13 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Fri, 12 Oct 2007 13:10:13 -0400
Subject: PEP idea: Instrumented Python
In-Reply-To: <A043BC3C-2F51-4906-898F-5B990FD0D937@myemma.com>
Message-ID: <20071012171013.8162.1037189775.divmod.quotient.22147@ohm>

On Fri, 12 Oct 2007 11:33:11 -0500, Erik Jones <erik at myemma.com> wrote:
> [snip]
>
>This got me thinking about building a module that could be included
>by projects that creates a socket and responds to messages on that
>socket in a separate thread from the main app so that you can connect
>to the app and explore its current state.  Take a look at the
>evalexception module in Paste to see what he does.
>

Or manhole in Twisted.

Jean-Paul


From deets at nospam.web.de  Tue Oct  9 04:58:13 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 10:58:13 +0200
Subject: Accessing 'Package Data'
References: <87bqb8wxv3.fsf@keizer.soze.com>
Message-ID: <5n0u55FfqlhcU1@mid.uni-berlin.de>

Stefan Arentz wrote:

> 
> At http://docs.python.org/dist/node12.html it is described how to add
> package data to a module. This was pretty easy to do, but now how do I
> access this data from my module? Is there an API to load a 'package
> resource' ala Java's classloader?

You can always use os.path + the __file__-attribute of the containing
package.

And there is the 3rd-party pkg_resources, part of setuptools:

 http://peak.telecommunity.com/DevCenter/PkgResources

Diez


From carsten at uniqsys.com  Mon Oct  1 12:26:15 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 12:26:15 -0400
Subject: Setting value of Python variable in a Python C extension
In-Reply-To: <1191254887.206973.115960@r29g2000hsg.googlegroups.com>
References: <1191254887.206973.115960@r29g2000hsg.googlegroups.com>
Message-ID: <1191255975.3393.28.camel@dot.uniqsys.com>

On Mon, 2007-10-01 at 09:08 -0700, MD wrote:
> Hi,
>    I have a function developed in C that is being used as a Python
> extension. The function is being passed a variable from the Python
> program. Is it possible to change the value of this variable from
> within the C function?

That question is ill-defined because Python doesn't have variables.
Python has objects and names. "Change the value of this variable" can
either mean that you want to mutate an object that's passed by the
caller, which you can do as long as the object is mutable, or you want
to rebind a name in the caller's namespace, which you can't do.

Why do you think your function needs to have side-effects instead of
simply returning a return value?

-- 
Carsten Haese
http://informixdb.sourceforge.net




From martin at v.loewis.de  Wed Oct 31 12:39:42 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 31 Oct 2007 17:39:42 +0100
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <1193847896.441329.315560@o80g2000hse.googlegroups.com>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
	<1193813238.978699.154830@57g2000hsv.googlegroups.com>
	<47288E4D.6010301@v.loewis.de>
	<1193847896.441329.315560@o80g2000hse.googlegroups.com>
Message-ID: <4728afce$0$7845$9b622d9e@news.freenet.de>

> tk.h is now in just about every directory called include that could in
> anyway be connected with this and indeed it does appear in the make
> file printout:
> 
> /usr/bin/install -c -m 644 ./Include/tk.h /usr/local/include/python2.5

How did you get tk.h into the Include directory? You shouldn't manually
copy files around; this will surely break your system and installation
procedures if you don't know exactly what you are doing.

What is the location that your Mandriva package installed tk.h to?

> Short of stuffing lots of print statements in there to actual try and
> locate the file names it's failing on I'm at a loss to see where to go
> next.

tk.h is searched-for in detect_tkinter. Check whether tklib, tcllib,
tcl_includes and tk_includes all get set. This should take only
a single print statement.

Regards,
Martin


From fetchinson at googlemail.com  Fri Oct 12 12:59:20 2007
From: fetchinson at googlemail.com (Daniel Fetchinson)
Date: Fri, 12 Oct 2007 18:59:20 +0200
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
Message-ID: <fbe2e2100710120959n3d3a4270i2389e4ace11f37e6@mail.gmail.com>

> My Python script makes a bunch of images that I want to use as frames
> in a movie.  I've tried searching for a module that will take these
> images and put them together in a Quicktime or mpeg movie, but haven't
> found anything.  My images are currently pdfs, but I could make them
> into just about anything if needed.
>
> Is there a module, or example of how to do this?
> Thanks,
> Jeremy

If you'll be happy with a flash movie you can try ming: ming.sf.net
which is a C library for creating flash files and there is a python
binding for it (among other languages).


From noroi at eden.rutgers.edu  Sat Oct 13 17:25:27 2007
From: noroi at eden.rutgers.edu (noroi)
Date: Sat, 13 Oct 2007 14:25:27 -0700 (PDT)
Subject: Question - FM receiver sample - AtttributeError
Message-ID: <13193588.post@talk.nabble.com>


Hi all,

   I got some problems while running the FM receiver's example codes from
the GNURadio tutorial page; the RF front end is set to call the signal input
from daughter board, and when the compiler tried to call mothods to set some
parameter values(such as gain, set_AGC() and If frequency, get_output_freq()
), it seems not able to find those methods/ functions... Could someone be
kind enough to give some pointers for solving such errors?


Traceback (most recent call last):
  
  File "./nuradio.py", line 91, in __init__
    IF_freq = rf_front_end.get_output_freq () # 5.75e6
  File "/usr/local/lib/python2.4/site-packages/gnuradio/usrp.py", line 181,
in __getattr__
    return getattr(self._u, name)
AttributeError: 'usrp1_source_c_sptr' object has no attribute
'get_output_freq'

ps. link for the full script is as below:
http://www.gnu.org/software/gnuradio/doc/exploring-gnuradio.html#fm-receiver

Thanks,
 
eric
-- 
View this message in context: http://www.nabble.com/Question---FM-receiver-sample---AtttributeError-tf4619680.html#a13193588
Sent from the Python - python-list mailing list archive at Nabble.com.



From nagle at animats.com  Sun Oct  7 17:30:57 2007
From: nagle at animats.com (John Nagle)
Date: Sun, 07 Oct 2007 21:30:57 GMT
Subject: Problem of Readability of Python
In-Reply-To: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <lecOi.58034$YL5.56312@newssvr29.news.prodigy.net>

Licheng Fang wrote:
> Python is supposed to be readable, but after programming in Python for
> a while I find my Python programs can be more obfuscated than their C/C
> ++ counterparts sometimes. Part of the reason is that with
> heterogeneous lists/tuples at hand, I tend to stuff many things into
> the list and *assume* a structure of the list or tuple, instead of
> declaring them explicitly as one will do with C structs. 

    Comments might help.

    It's common to use tuples that way, but slightly bad form to
use lists that way.

    Of course, you can create a class and use "slots" to bind
the positions at compile time, so you don't pay for a dictionary
lookup on every feature.

    (Someday I need to overhaul BeautifulSoup to use "slots".
That might speed it up.)

				John Nagle


From fred.sells at adventistcare.org  Tue Oct  2 15:45:00 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Tue, 2 Oct 2007 15:45:00 -0400
Subject: Mysqldb printing sql and params ... NEVER MIND
In-Reply-To: <0A53725C4A497848A7B3A0874B2598313D38C4@acesxch01.ADVENTISTCORP.NET>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38C6@acesxch01.ADVENTISTCORP.NET>

el stupido here "accidently" put a couple of print statements into a
mysqldb module when eclipse opened it from the link in the stacktrace;



From cadet.bramble at gmail.com  Mon Oct  1 23:04:25 2007
From: cadet.bramble at gmail.com (bramble)
Date: Tue, 02 Oct 2007 03:04:25 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191292451.096937.63000@50g2000hsm.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<1191292451.096937.63000@50g2000hsm.googlegroups.com>
Message-ID: <1191294265.611162.57730@g4g2000hsf.googlegroups.com>

On Oct 1, 10:34 pm, Benjamin <musiccomposit... at gmail.com> wrote:
> and they are still supported
> not to break compatability.

Hm. Ok. I can see that for the 2.x releases. But Py3k is all about
breaking compatibility, so, it would seem there's more to the story.



From http  Fri Oct  5 22:51:59 2007
From: http (Paul Rubin)
Date: 05 Oct 2007 19:51:59 -0700
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
	<1191616293.965858.43000@d55g2000hsg.googlegroups.com>
	<7xd4vtw6b0.fsf@ruckus.brouhaha.com>
	<871wc9qblg.fsf@benfinney.id.au> <87wsu1ouxl.fsf@benfinney.id.au>
Message-ID: <7xve9lymy8.fsf@ruckus.brouhaha.com>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:
> Or even better:
> 
>     def test_raises_good_exception():
>         try:
>             thingy()

Well if we're grading on style, maybe you really want to name the
function 'test_thingy' instead of 'test_raises_good_exception'.


From marco at sferacarta.com  Mon Oct 22 11:35:07 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Mon, 22 Oct 2007 17:35:07 +0200
Subject: Check File Change Every 10 Seconds
In-Reply-To: <mailman.326.1193064368.13605.python-list@python.org>
References: <27459.1491478079$1193048158@news.gmane.org>	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
	<mailman.326.1193064368.13605.python-list@python.org>
Message-ID: <Kq3Ti.5411$aa6.4886@tornado.fastwebnet.it>

Robert Rawlins - Think Blue wrote:

> That certainly looks to be the type of thing that I'm looking to achieve, however, I forgot to mention I'm running this on a Linux platform and not a Win32 one :-( Sorry.

Did you try python-gamin?

"Gamin is a file and directory monitoring system defined to be a subset 
of the FAM (File Alteration Monitor) system."



From robert.kern at gmail.com  Sun Oct 28 15:32:06 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 28 Oct 2007 14:32:06 -0500
Subject: Pari Python
In-Reply-To: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
Message-ID: <fg2o3n$q62$1@ger.gmane.org>

Anton Mellit wrote:
> Hi,
> 
> I am working on a Pari-Python module (see about GP/PARI at
> http://pari.math.u-bordeaux.fr/). Similar project was started by
> Stefane Fermigier 12 years ago (you can find a post about it on this
> newsgroup). You can see some screenshots on my blog (http://
> mellit.wordpress.com/2007/10/28/pari-python/). I reproduce the text on
> my blog here.
> 
> I finished some working version of the pari-python module. I tried to
> make it is close as possible to the standard PARI shell, at the same
> time using the standard python syntax. Here I put some screenshots. I
> didn?t make a proper package distribution for python (the code still
> looks ugly and I still don't know how to make proper distributions),
> but if someone is interested to test it send me an email. This is in
> early alpha stage. A lot of things are not working. I imported almost
> all functions of gp by an automated perl script but I don?t know which
> of them actually work and which not.
> 
> There are two special difficulties you may notice about python. The
> first one is the power operation. In python it is ?**?, whereas ?^? is
> reserved for the bitwise xor. I made some little changes to the python
> source so that ?^? and ?^=? now work as power, and ?^^? and ?^^=? work
> as xor if you still want to use it. This is done by modifying about 30
> lines of source code in several files: Include/token.h, Modules/
> parsermodule.c, Parser/tokenizer.c, Python/ast.c, Grammar/Grammar.
> 
> The second difficulty is that expressions like ?1/2? produce 0 in
> python. For this my module installs my own handler for the operation
> ?divide? for integers and longs. That?s it. In other respects it is a
> normal python module.
> 
> I will greatly appreciate any feedback.

Have you looked at SAGE at all? They already have wrappers for Pari.

  http://www.sagemath.org/

I don't recommend continuing to modify core parts of Python just for your
module. It means that you will break other Python modules. If you can't use
other Python modules with your module, what's the point of using Python at all?

-- 
Robert Kern

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



From software at ginstrom.com  Tue Oct 23 09:00:19 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Tue, 23 Oct 2007 22:00:19 +0900
Subject: japanese encoding iso-2022-jp in python vs. perl
In-Reply-To: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
References: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
Message-ID: <0b1101c81574$aa94fea0$0203a8c0@MOUSE>

> On Behalf Of kettle
>   I am rather new to python, and am currently struggling with some
> encoding issues.  I have some utf-8-encoded text which I need to
> encode as iso-2022-jp before sending it out to the world. I am using
> python's encode functions:
> --
>  var = var.encode("iso-2022-jp", "replace")
>  print var
> --

Possibly silly question: Is that a utf-8 string, or Unicode?

print unicode(var, "utf8").encode("iso-2022-jp")

On my computer (Japanese XP), your string round-trips between utf-8 and
iso-2022-jp without problems.

Another possible thing to look at is whether your Python output terminal can
print Japanese OK. Does it choke when printing the string as Unicode?

Regards,
Ryan Ginstrom



From rsachetto at gmail.com  Sat Oct 20 09:00:23 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Sat, 20 Oct 2007 11:00:23 -0200
Subject: open remote terminal
In-Reply-To: <ffcj1t$rum$1@ger.gmane.org>
References: <ff5olg$oll$2@ger.gmane.org> <ff7tk0$3dj$1@ger.gmane.org>
	<ffce3b$eto$1@ger.gmane.org> <ffcj1t$rum$1@ger.gmane.org>
Message-ID: <250fcec00710200600g25bdc1d7vacf15c3d4c4a45ff@mail.gmail.com>

Take a look at this documentation:

http://pexpect.sourceforge.net/pxssh.html

On 10/20/07, Fabian Braennstroem <f.braennstroem at gmx.de> wrote:
>
> Fabian Braennstroem wrote:
>
> > Hi Steve,
> >
> > Steve Holden wrote:
> >
> >> Fabian Braennstroem wrote:
> >>> Hi,
> >>>
> >>> I would like to use python to start an terminal, e.g. xterm, and login
> >>> on a remote machine using rsh or ssh. This could be done using 'xterm
> -e
> >>> ssh machine', but after the login I would like to jump to a given
> >>> directory. Does anyone have an idea how to do this with python?
> >>>
> >>> Regards!
> >>> Fabian
> >>>
> >> pexpect would be the usual solution, I believe, if you could get it to
> >> interact correctly with your virtual terminal.
> >>
> >>    http://pexpect.sourceforge.net/
>
> I actually gave it a first very simple try:
>
> import pexpect
> child=pexpect.spawn('xterm')
> child.sendline('ls')
>
> Unfortunately nothing happens expect the start of xterm!? Does anyone have
> an idea, what I am doing wrong?
> Fabian
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071020/7eb8646a/attachment.html>

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 22 07:54:47 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 13:54:47 +0200
Subject: if..else stmt
In-Reply-To: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
References: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
Message-ID: <471c8f7f$0$14256$426a34cc@news.free.fr>

bigden007 a ?crit :
> Hi,
> I have a if..else statement in my script. The statements all execute
> fine, but the problem is , even if the IF part of the statement is
> true, the else part executes as well. The verion of pythin i use 2.5
> Any help is appreciatiated.

My crystal ball tells me the problem is on line 42 !-)


And if you expect any useful help, please post the minimal working code 
reproducing the problem (chances are you'll find the problem by yourself 
doing so...).


From mpm at selenic.com  Thu Oct 11 02:26:04 2007
From: mpm at selenic.com (Matt Mackal)
Date: Thu, 11 Oct 2007 01:26:04 -0500
Subject: "".join(string_generator()) fails to be magic
Message-ID: <20071011062604.GW19691@waste.org>

I have an application that occassionally is called upon to process
strings that are a substantial portion of the size of memory. For
various reasons, the resultant strings must fit completely in RAM.
Occassionally, I need to join some large strings to build some even
larger strings.

Unfortunately, there's no good way of doing this without using 2x the
amount of memory as the result. You can get most of the way there with
things like cStringIO or mmap objects, but when you want to actually
get the result as a Python string, you run into the copy again.

Thus, it would be nice if there was a way to join the output of a
string generator so that I didn't need to keep the partial strings in
memory. <subject> would be the obvious way to do this, but it of
course converts the generator output to a list first.

-- 
 "Love the dolphins," she advised him. "Write by W.A.S.T.E.." 


From david.trem at gmail.com  Thu Oct  4 11:29:35 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Thu, 4 Oct 2007 17:29:35 +0200
Subject: Need help to find origin of a memory leakage
Message-ID: <129e1cd10710040829v263acf1btd42b16350381e7b8@mail.gmail.com>

hello,

 I'm struggling with a memory leakage of my  app for quite some
time. Could somebody help?

I join a demo program in attachment.
The problem is that the memory consumption keeps on increasing while
opening and closing tabs.
In the demo attached a click on "button" will open a new tab. If, for
example, you open ten new tabs, then close ten tabs, and open again
ten tab, and repeat this many times you will see the memory
consumption increases after each 10 close-10 open cycles.
Could somebody help me on finding the origin of this leak?

Note: I already post on pygtk list and did not get any useful help at
this point in time.
I use
Python 2.5.1
GTK: (2, 12, 0)
 pyGTK: (2, 12, 0)
I already observed the same issue with older versions...
It's been a long time I try to solve it...

Thanks in advance,
-------------- next part --------------
A non-text attachment was scrubbed...
Name: mem_leak.py
Type: application/octet-stream
Size: 2842 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/4828cbe1/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fenetre.glade
Type: application/octet-stream
Size: 1956 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/4828cbe1/attachment-0001.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: element.glade
Type: application/octet-stream
Size: 1798 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/4828cbe1/attachment-0002.obj>

From cadet.bramble at gmail.com  Tue Oct  2 20:13:27 2007
From: cadet.bramble at gmail.com (bramble)
Date: Wed, 03 Oct 2007 00:13:27 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <mailman.1399.1191337639.2658.python-list@python.org>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
Message-ID: <1191370407.188678.86820@n39g2000hsh.googlegroups.com>

On Oct 2, 11:07 am, "Chris Mellon" <arka... at gmail.com> wrote:
>
> PyGtk has poor cross platform support, a very large footprint (the
> largest of all these libraries) as well as a complicated runtime
> environment.

What's complicated about it?



From kay.schluehr at gmx.net  Sat Oct 13 01:17:30 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 12 Oct 2007 22:17:30 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <mailman.154.1192242582.927.python-list@python.org>
References: <mailman.154.1192242582.927.python-list@python.org>
Message-ID: <1192252650.930269.167970@e34g2000pro.googlegroups.com>

On Oct 13, 4:23 am, Massimo Di Pierro <MDiPie... at cti.depaul.edu>
wrote:
> Hello everybody,
>
> I just joined this mailing list. Thanks for your comments about gluon.
>
> I have posted a short video about it and I am planning to make more
> over the week-end.
>
> http://www.youtube.com/watch?v=VBjja6N6IYk
>
> About some of your comments:
> - the most complex modules (like html and sql ones) have doctests.
> - the executable versions (win and mac) come with python2.5. Running
> from source code does not require 2.5 but you probably want sqlite3.
> - so far I support sqlite3 and postgresql, not mysql (just because I
> do not use it and had no time for testing it).
> - yes, there are typos in the documentation. Please point them out to
> me so that I can fix them.
> - I am sure there are some minor bugs I am not aware of but as far I
> tested, it work.
> - If you report bugs to me I promise to fix them in 48hrs.
> - please make sure you have the latest version.
>
> I very much appreciate comments about gluon (good and bad). Please
> send me more so that I can improve it.
>
> There will be two talks in chicago about gluon next week: at DePaul
> Linux Users Group on Thursday evening and at the Chicago Linux Users
> Group on Saturday afternoon. I will try record them and post them.
>
> Massimo

Massimo, it's just a style matter but could you please unmix tabs and
blanks in Gluon?

Since Gluon is pure Python I can try backtranslating the Python 2.5
code to Python 2.4. This requires following tool of mine:

http://www.fiber-space.de/EasyExtend/doc/Py25Lite/Py25Lite.html

The Python 2.4 source code can then be used by people like Michele who
have 2.4 lecagies. Note that the conversion process is fully automated
( it requires just a little conversion script targetting Gluon ) and
can be reiterated. The conversion however needs tests to be confirmed.
It would also be a nice little project for Py25Lite in the real-world.

Kay





From mdipierro at cti.depaul.edu  Tue Oct 16 02:54:36 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Tue, 16 Oct 2007 01:54:36 -0500
Subject: re.sub
In-Reply-To: <1192516496.148265.103880@e9g2000prf.googlegroups.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
Message-ID: <11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>

Shouldn't this

 >>> print re.sub('a','\\n','bab')
b
b

output

b\nb

instead?

Massimo

On Oct 16, 2007, at 1:34 AM, George Sakkis wrote:

> On Oct 15, 11:02 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
>> I'm applying groupby() in a very simplistic way to split up some  
>> data,
>> but when I timeit against another method, it takes twice as long.   
>> The
>> following groupby() code groups the data between the "</tr>" strings:
>>
>> data = [
>> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
>> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
>> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
>> ]
>>
>> import itertools
>>
>> def key(s):
>>     if s[0] == "<":
>>         return 'a'
>>     else:
>>         return 'b'
>>
>> def test3():
>>
>>     master_list = []
>>     for group_key, group in itertools.groupby(data, key):
>>         if group_key == "b":
>>             master_list.append(list(group) )
>>
>> def test1():
>>     master_list = []
>>     row = []
>>
>>     for elmt in data:
>>         if elmt[0] != "<":
>>             row.append(elmt)
>>         else:
>>             if row:
>>                 master_list.append(" ".join(row) )
>>                 row = []
>>
>> import timeit
>>
>> t = timeit.Timer("test3()", "from __main__ import test3, key, data")
>> print t.timeit()
>> t = timeit.Timer("test1()", "from __main__ import test1, data")
>> print t.timeit()
>>
>> --output:---
>> 42.791079998
>> 19.0128788948
>>
>> I thought groupby() would be faster.  Am I doing something wrong?
>
> Yes and no. Yes, the groupby version can be improved a little by
> calling a builtin method instead of a Python function. No, test1 still
> beats it hands down (and with Psyco even further); it is almost good
> as it gets in pure Python.
>
> FWIW, here's a faster and more compact version with groupby:
>
> def test3b(data):
>     join = ' '.join
>     return [join(group) for key,group in
>             itertools.groupby(data, "</tr>".__eq__)
>             if not key]
>
>
> George
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From p at ulmcnett.com  Mon Oct 15 16:58:35 2007
From: p at ulmcnett.com (Paul McNett)
Date: Mon, 15 Oct 2007 13:58:35 -0700
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>
Message-ID: <4713D47B.2070600@ulmcnett.com>

Matthieu Brucher wrote:
> I want to create a temporary database that is downloaded for the net. So 
> I want to use a temporary file that will be deleted at the end of my 
> program. For this, I wanted to use tempfile.TemporaryFile. The problem 
> with Windows is that I can't give to sqlite3.connect() the file neither 
> can I give its name (if I use NamedTemporaryFile). Is there a solution 
> somewhere ?

Are you aware that you can do an in-memory database (IOW no file at all)?

cur = sqlite.connect(":memory:")


-- 
pkm ~ http://paulmcnett.com


From besturk at gmail.com  Wed Oct 31 16:24:36 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 31 Oct 2007 13:24:36 -0700
Subject: 3 number and dot..
In-Reply-To: <mailman.708.1193861946.13605.python-list@python.org>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<mailman.708.1193861946.13605.python-list@python.org>
Message-ID: <1193862276.144648.43850@22g2000hsm.googlegroups.com>

On Oct 31, 10:18 pm, Paul McNett <p... at ulmcnett.com> wrote:
> Abandoned wrote:
> > Hi..
> > I want to do this:
> > for examle:
> > 12332321 ==> 12.332.321
>
> > How can i do?
>
> Assuming that the dots are always in the 3rd and 7th position in the string:
>
> def conv(s, sep="."):
>    l = [s[0:3], s[3:6], s[6:]]
>    return sep.join(l)
>
> print conv("12332321")
>
> --
> pkm ~http://paulmcnett.com

But it's starts from the end..
print conv("12332321")
123.323.21
This is wrong it would be 12.332.321



From mail at timgolden.me.uk  Mon Oct 22 10:40:18 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Mon, 22 Oct 2007 15:40:18 +0100
Subject: Check File Change Every 10 Seconds
In-Reply-To: <op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <27459.1491478079$1193048158@news.gmane.org>
	<op.t0lruth1x6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <471CB652.5070802@timgolden.me.uk>

Gabriel Genellina wrote:
> En Mon, 22 Oct 2007 06:56:52 -0300, Robert Rawlins - Think Blue  
> <robert.rawlins at thinkbluemedia.co.uk> escribi?:
> 
>> I've got a requirement to check a file for a change every 10 seconds or  
>> so,
>> and if the file has been modified since the last time I parsed its  
>> content
>> into the application then I need to parse it in again. However, I need  
>> this
>> process to not interrupt the rest of my application flow.
> 
> See this article by Tim Golden:
> http://timgolden.me.uk/python/win32_how_do_i/watch_directory_for_changes.html
> 
>> What is the best way to handle this? Is there some form of file watcher
>> module for python which can watch the file for me and then parse any  
>> changes
>> into the application memory? Or should I be spawning and unjoined thread
>> which contains and infinite loop which checks a date/time the file was
>> modified against an internal date/time variable for when the application
>> last parsed the file into memory?
> 
> I would use a different thread waiting for notifications from  
> ReadDirectoryChangesW (third option in the link above)
> See http://msdn2.microsoft.com/en-us/library/aa365465.aspx for more info  
> on ReadDirectoryChangesW
> 

Although Robert doesn't say so here, I seem to remember that his
past posts have indicated a *nix setting. Robert?

TJG


From nospamformeSVP at gmail.com  Thu Oct 11 10:11:11 2007
From: nospamformeSVP at gmail.com (Don Taylor)
Date: Thu, 11 Oct 2007 10:11:11 -0400
Subject: PyDev 1.3.9 code compleition trouble
In-Reply-To: <470B544E.5070209@swsoft.com>
References: <470B544E.5070209@swsoft.com>
Message-ID: <felau4$1lg$1@sea.gmane.org>

Vyacheslav Maslov wrote:

> I use Pydev 1.3.9 and notice issue related to code completion. I give an 
> ...stuff deleted...
> proposed also as well. Why this doesn't work?

You will have better luck asking this question on the Pydev forum:

http://sourceforge.net/forum/forum.php?forum_id=293649

The SF forum is also mirrored on gmane as:
gmane.comp.ide.eclipse.plugins.pydev.user

Fabio provides an _amazing_ level of support for Pydev on this forum, I 
don't think he ever sleeps.

Don.



From aahz at pythoncraft.com  Wed Oct 31 21:55:22 2007
From: aahz at pythoncraft.com (Aahz)
Date: 31 Oct 2007 18:55:22 -0700
Subject: Endless GIL and thread confusion
References: <pan.2007.10.21.16.25.37.300233@hotmail.com>
Message-ID: <fgbbma$3ka$1@panix3.panix.com>

In article <pan.2007.10.21.16.25.37.300233 at hotmail.com>,
enska  <ensiferum_ at hotmail.com> wrote:
>
>Can someone clarify the steps needed to make access to the interpreter
>safe from multiple threads?
>
>I've been reading the docs for days and I still find them very confusing
>and misleading. For example does the PyGILState_Ensure() function lock the
>GIL or just create the thread state? Is thread supposed to call it once on
>creation and then the release function before exiting or is this the
>preferred mechanism to handle the locking? Most of the confusion stems
>from this segment in the documentation.

If you haven't already, try capi-sig at python.org.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"Typing is cheap.  Thinking is expensive."  --Roy Smith


From sjmachin at lexicon.net  Sun Oct  7 18:24:31 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 08 Oct 2007 08:24:31 +1000
Subject: Problem of Readability of Python
In-Reply-To: <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
Message-ID: <47095ca3@news.eftel.com.au>

On 8/10/2007 4:14 AM, Steven Bethard wrote:
> Licheng Fang wrote:
>> Python is supposed to be readable, but after programming in Python for
>> a while I find my Python programs can be more obfuscated than their C/C
>> ++ counterparts sometimes. Part of the reason is that with
>> heterogeneous lists/tuples at hand, I tend to stuff many things into
>> the list and *assume* a structure of the list or tuple, instead of
>> declaring them explicitly as one will do with C structs. So, what used
>> to be
>>
>> struct nameval {
>>     char * name;
>>    int val;
>> } a;
>>
>> a.name = ...
>> a.val = ...
>>
>> becomes cryptic
>>
>> a[0] = ...
>> a[1] = ...
>>
>> Python Tutorial says an empty class can be used to do this. But if
>> namespaces are implemented as dicts, wouldn't it incur much overhead
>> if one defines empty classes as such for some very frequently used
>> data structures of the program?
>>
>> Any elegant solutions?
> 
> You can use __slots__ to make objects consume less memory and have 
> slightly better attribute-access performance. Classes for objects that 
> need such performance tweaks should start like::
> 
>     class A(object):
>         __slots__ = 'name', 'val'
> 
> The recipe below fills in the obvious __init__ method for such classes 
> so that the above is pretty much all you need to write:
> 
>     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502237
> 
> 

If not needing/wanting __slots__, something simpler (no metaclasses!) 
like the following helps the legibility/utility:

<file record.py>

class BaseRecord(object):

     def __init__(self, **kwargs):
         for k, v in kwargs.iteritems():
             setattr(self, k, v)

     def dump(self, text=''):
         print '== dumping %s instance: %s' % (self.__class__.__name__, 
text)
         for k, v in sorted(self.__dict__.iteritems()):
             print '   %s: %r' % (k, v)
</file record.py>


Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit 
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
 >>> from record import BaseRecord
 >>> class A(BaseRecord):
...     pass
...
 >>> class B(BaseRecord):
...     pass
...
 >>> a1 = A(foo=1, bar='rab', zot=(1, 2))
 >>> a2 = A(foo=2, bar='xxx', zot=(42, 666))
 >>> a1.dump()
== dumping A instance:
    bar: 'rab'
    foo: 1
    zot: (1, 2)
 >>> a2.dump('more of the same')
== dumping A instance: more of the same
    bar: 'xxx'
    foo: 2
    zot: (42, 666)
 >>> a1.ugh = 'poked in'
 >>> a1.dump('after poking')
== dumping A instance: after poking
    bar: 'rab'
    foo: 1
    ugh: 'poked in'
    zot: (1, 2)
 >>> b1 = B()
 >>> b1.dump()
== dumping B instance:
 >>> b1.esrever = 'esrever'[::-1]
 >>> b1.dump()
== dumping B instance:
    esrever: 'reverse'
 >>>

HTH,
John


From erik at myemma.com  Wed Oct 10 00:18:37 2007
From: erik at myemma.com (Erik Jones)
Date: Tue, 9 Oct 2007 23:18:37 -0500
Subject: storing meta data on dictionary keys
In-Reply-To: <9785.78885.qm@web81001.mail.mud.yahoo.com>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
Message-ID: <A79F0DAB-8522-4B8E-9BDB-15090449DB7B@myemma.com>

On Oct 9, 2007, at 7:37 PM, Andreas Kraemer wrote:

> From: Chris Mellon <arkanes at gmail.com>
> Sent: Tuesday, October 9, 2007 1:51:04 PM
>
> > Because, by definition, if you have the key then you don't need  
> to get
> > it from the dict. What you're doing here is conflating 2 mappings  
> into
> > one: string value->person and person->values.  Use 2 explicit  
> dicts to
> > make it clear what you're going, or use one dict and store a  
> tuple of
> > values: person, friends = d["John"].
>
> No, that was not the point.
>
> I don't want the meta data to be used in the dictionary look-up,  
> and in fact I want to be able to modify or delete it later w/o  
> affecting dictionary look-up. In the toy example "John" and Str 
> ("John") are two different objects that map to the same value in  
> the dictionary, and "John" == Str("John") is True, since class Str 
> (str)  inherits __hash__() and __eq__() from str. IOW, if John dyes  
> his hair, his friends shouldn't change :-)
>
> Apart from this silly example I really encountered this issue when  
> using the networkx library. As I mentioned, graph nodes are stored  
> as dictionary keys there, i.e. nodes can be arbitrary objects with  
> the only requirement to be hashable, and I am stuck with this data  
> structure when using the library. In my example nodes are uniquely  
> identified by their name (a string) but may carry other attributes,  
> like their display color and shape, that are not used to identify a  
> node. Therefore, I thought, subclassing str would be the simplest,  
> most straightforward structure for a node object.
>
> Of course there are workarounds (e.g. get all keys with keys()),  
> but I thought something similar to a get_key() dictionary method  
> would be the easiest way to retrieve the actually stored key  
> object, and I was just surprised to discover that no such method  
> does exist ....

So, do you not keep references to your nodes anywhere but the actual  
graph dict?  I kind of agree with Chris here in that two dicts will  
work.  One for the nodes, indexed by their strings.  And, to use the  
actual nodes as keys simply override __hash__ in your Node object  
classes.

 >>> class Node(object):
...     def __init__(self, name, **kwargs):
...         self.name = name
...         for k, v in kwargs.items():
...             self.__dict__[k] = v
...
...     def __hash__(self):
...         return hash(self.name)
...
 >>> nodes = {}
 >>> graph = {}
 >>>
 >>> n = Node('foo')
 >>> m = Node('blah', baz=5)
 >>>
 >>> nodes[n.name] = n
 >>> nodes[m.name] = m
 >>>
 >>> for name, node in nodes.items():
...     graph[node] = "whatever for node %s" % name
...
 >>> nodes{'blah': <__main__.Node object at 0x76c50>, 'foo':  
<__main__.Node object at 0x76d30>}
 >>> graph{<__main__.Node object at 0x76c50>: 'whatever for node  
blah', <__main__.Node object at 0x76d30>: 'whatever for node foo'}
 >>> graph[nodes['foo']]'whatever for node foo'

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From david.trem at gmail.com  Sat Oct  6 13:09:52 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sat, 6 Oct 2007 19:09:52 +0200
Subject: help on understanding garbage collection
Message-ID: <129e1cd10710061009o11592cffved60571c2b3c091e@mail.gmail.com>

Hello,

 I would need help to understand how garbage collection work and how
to "trace" objects...
An example is joined where and object is created and deleted.
Why in the second part of the example I do not see any object removed:
"
----------------------------------------
Removed objects: 0
[]
--------------------
"

Thanks for your help,

David


From danfolkes at gmail.com  Tue Oct 16 09:35:28 2007
From: danfolkes at gmail.com (danfolkes)
Date: Tue, 16 Oct 2007 13:35:28 -0000
Subject: Trying to Send Repeated Messages to a Server Using sockets
Message-ID: <1192541728.586135.323040@t8g2000prg.googlegroups.com>

Hey Everyone, I am trying to send repeated messages from a "Node" to a
"Server".  It works the first time I send the from the Node to Server,
but after that it either errors, or does not do anything.

I would love some help,  here is the code:

import socket
import thread
import time


def Node(nodeAddress):

    '''connect to node and get its file load'''

    sN = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # Echo client program
    HOST = nodeAddress        # The remote host
    PORT = 50007              # The same port as used by the server
    sN = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sN.connect((HOST, PORT))
    sN.send('Hello, world')
    data = sN.recv(1024)
    sN.close()
    print 'Received', repr(data)

def Server(address):

    ''' starts a socket server and decides what to do with incomming
stuff'''
    message = "hello from server"
    HOST = ''                 # Symbolic name meaning the local host
    PORT = 50007              # Arbitrary non-privileged port
    sP = None
    sL = None
    sR = None
    sS = None
    sStor = 0
    sTotalStorage = 0
    sCT = (sP,)
    '''look in server.conf for connect_to_server value'''

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.bind((HOST, PORT))
    s.listen(1)
    conn, addr = s.accept()
    print 'Connected by', addr
    while 1:
        print message
        time.sleep(1)
        data = conn.recv(1024)
        #if not data: break
        conn.send(data)
    conn.close()

thread.start_new(Server,('',))
thread.start_new(Node,('127.0.0.1',))
while 1:
    time.sleep(5)
    thread.start_new(Node,('127.0.0.1',))



From richyjsm at gmail.com  Mon Oct  1 20:20:22 2007
From: richyjsm at gmail.com (richyjsm at gmail.com)
Date: Tue, 02 Oct 2007 00:20:22 -0000
Subject: Using fractions instead of floats
In-Reply-To: <slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
Message-ID: <1191284422.899591.308960@g4g2000hsf.googlegroups.com>

On Oct 1, 8:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
>   >>> mpq(1,3)+0.6
>   mpq(14,15)

Golly!  That's quite impressive.  And more than a little bit magic as
well, since 0.6 is definitely not the same as 3/5.  How on earth does
this work?

Richard



From rcsqtc at iiqab.csic.es  Wed Oct 10 06:39:24 2007
From: rcsqtc at iiqab.csic.es (Ramon Crehuet)
Date: Wed, 10 Oct 2007 12:39:24 +0200
Subject: function wrappers
Message-ID: <470CABDC.9090003@iiqab.csic.es>

Dear all,
I have a Fortran programming background and I have some difficulties in 
understading how function wrappers work. I have delved into the subject 
because of the new decorators, but I understand the decorator syntax. My 
ignorance is more profound... Here is an example without decorators:

def require_int(func):
       def wrapper(arg):
           assert isinstance(arg, int)
           return func(arg)
       return wrapper
p1(a):
   print a

p2=require_int(p1)

My question is: why do p2 arguments become wrapper arguments? What is 
the flux of the arguments in the program when you pass functions as 
arguments?
I have looked into some books and google but I cannot find a 
satisfactory explanation. Could somebody please give me a hint or point 
me to an appropriate source?
Thanks for your time,

Ramon


From steve at REMOVE-THIS-cybersource.com.au  Tue Oct  9 18:43:16 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 09 Oct 2007 22:43:16 -0000
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n244rFf0dahU2@mid.uni-berlin.de>
Message-ID: <13go104macd7q15@corp.supernews.com>

On Tue, 09 Oct 2007 19:46:35 +0000, Marc 'BlackJack' Rintsch wrote:

> On Tue, 09 Oct 2007 18:08:34 +0000, Steven D'Aprano wrote:
> 
>>>>> L = []
>>>>> id(L)
>> 3083496716L
>>>>> L += [1]
>>>>> id(L)
>> 3083496716L
>> 
>> It's the same L, not rebound at all.
> 
> It *is* rebound.  To the same object, but it *is* assigned to `L` and
> not just mutated in place.

Picky picky.

Yes, technically there is an assignment of L to itself. I was sloppy to 
say "not rebound at all", because when you write an augmented assignment 
method you have to return self if you want to implement in-place 
mutation. But I hardly call "rebinding to itself" any sort of rebinding 
worth the name :)

Diez is still wrong though, even though I overstated my case. See my 
reply to his post.



[snip code]
> If it was just mutation then `B.a` would have triggered an
> `AttributeError`.

Why? Don't Python classes have inheritance?

(That's a rhetorical question. Yes they do, and no B.a would not raise 
AttributeError because it would inherit from A.)


-- 
Steven.


From alexandre.badez at gmail.com  Wed Oct 24 09:21:49 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Wed, 24 Oct 2007 13:21:49 -0000
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <1193232109.743432.97240@i13g2000prf.googlegroups.com>

Thanks for your try Cliff, I was very confused :P
More over I made some mistake when I post (to make it easiest).

Here is my real code:

with
dArguments = {
  'argName' : {
    'mandatory' : bool, # True or False
    [...], # other field we do not care here
  }
}

lMandatory = []
lOptional = []
for arg in cls.dArguments:
  if cls.dArguments[arg]['mandatory']:
    lMandatory.append(arg)
  else:
    lOptional.append(arg)
return (lMandatory, lOptional)

So, as you see, we agree each other about "if bool" or "if bool is
True" ;)

So, my question was how to give it a better 'python like' look ?
Any idea ?



From vinay_sajip at yahoo.co.uk  Mon Oct 29 16:48:14 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Mon, 29 Oct 2007 13:48:14 -0700
Subject: python logging config file doesn't allow filters?
In-Reply-To: <slrnfi48jl.dft.matt@coleridge.tplus1.com>
References: <slrnfi48jl.dft.matt@coleridge.tplus1.com>
Message-ID: <1193690894.014416.217660@o38g2000hse.googlegroups.com>

On 26 Oct, 17:23, Matthew Wilson <m... at tplus1.com> wrote:
> I'm studying
> filters and the config-file approach.  Is it possible to define a filter
> somehow and then refer to it in my config file?

I'm afraid not. There's currently no support for filters in the
configuration file format, and no plans to include them in the near
future (your post is the first time configuring filters has been
mentioned). However, if you would like to submit a patch, I'll
certainly take a look at it!

Best regards,

Vinay sajip



From beema.shafreen at gmail.com  Tue Oct 30 03:13:57 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Tue, 30 Oct 2007 12:43:57 +0530
Subject: dictionary and list
Message-ID: <aa405c1f0710300013p1edb353hd0df5512f6705db9@mail.gmail.com>

hi everbody,
                   I have a file,
     a                 b               c                       d         e
  2722316      2722360    A_16_P03641972    150    -44
  2722510      2722554    A_16_P21360239    16    -44
  2722570      2722614    A_16_P03641973    44    -44
  2722658      2722702    A_16_P41563669    2187    -44
  2724889      2724948    A_16_P03641974    738    -59
  2725686      2725745    A_16_P03641975    422    -59
  2726167      2726219    A_16_P03641976    88    -52
  2726307      2726366    A_16_P41563677    2167    -59
  2728533      2728589    A_16_P21360249    5819    -56
  2734408      2734467    A_16_P21360257    -14    -59
  2734453      2734509    A_16_P03641977    376    -56
  2734885      2734929    A_16_P21360259    1987    -44

 i need to do with dictionary like this : c[d,e,d+1] =
A_16_P03641972[150,-44,16]
my script:d = {}
fh = open('final_lenght_probe_span','r')
for line in fh.readlines():
        data = line.strip().split('\t')
        probe_id = data[2].strip()
        span = data[3].strip()
        length = data[4].strip()
        d[probe_id ] = []
        d[probe_id] = [span,length,span[0+1]]
for key in d.keys():
        print key ,d[key]
I donot end with this result how do i do....
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071030/2e6015d8/attachment.html>

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 18 13:29:36 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 19:29:36 +0200
Subject: Convert string to command..
In-Reply-To: <1192722821.698224.164120@e34g2000pro.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<5npdnsFj14e6U3@mid.uni-berlin.de>
	<1192722821.698224.164120@e34g2000pro.googlegroups.com>
Message-ID: <47179800$0$439$426a74cc@news.free.fr>

Abandoned a ?crit :
> On Oct 18, 6:51 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>> On Thu, 18 Oct 2007 08:41:30 -0700, Abandoned wrote:
>>> import cPickle as pickle
>>> a="{2:3,4:6,2:7}"
>>> s=pickle.dumps(a, -1)
>>> g=pickle.loads(s);
>>> print g
>>> '{2:3,4:6,2:7}'
>>> Thank you very much for your answer but result is a string ??
>> In Python terms yes, strings in Python can contain any byte value.  If you
>> want to put this into a database you need a BLOB column or encode it as
>> base64 or something similar more ASCII safe.
>>
>> Ciao,
>>         Marc 'BlackJack' Rintsch
> 
> '{2:3,4:6,2:7}' already in database, i select this and convert to real
> dictionary..

MVHO is that whoever uses a RDBMS to store language-specific serialized 
collections should be shot down without sommation.



From diego at pxes.org  Wed Oct 10 07:47:11 2007
From: diego at pxes.org (Diego Torres Milano)
Date: Wed, 10 Oct 2007 13:47:11 +0200
Subject: Autoglade
Message-ID: <470CBBBF.4020302@pxes.org>

I've been working on a python based tool named autoglade that could be
of help to simplify application development using glade as the interface
designer.
There is a lot of room for improvement but it's pretty usable right now.

You can download autoglade from http://sourceforge.net/projects/autoglade.

A basic tutorial can be found in the wiki:
http://autoglade.wiki.sourceforge.net/autoglade+tutorial+-+first+steps

This tutorial shows how you can create "applications" only from the
glade definition, no programming. A great companion for tools like
nautilus actions.

Comments, suggestions, critics, bugs, fixes, etc are gladly welcome.


-- 
Diego Torres Milano



From duncan.booth at invalid.invalid  Fri Oct 26 09:52:39 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Oct 2007 13:52:39 GMT
Subject: object inheritance
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
Message-ID: <Xns99D59713BE0FAduncanbooth@127.0.0.1>

Anand <anandology at gmail.com> wrote:

> On Oct 26, 5:31 pm, "Pradeep Jindal" <praddyjin... at gmail.com> wrote:
>> Can you tell any specific use case for doing this?
> 
> I have many implementaions of a db interface.
> 
> SimpleDB - simple implementation
> BetterDB - optimized implementation
> CachedDB - an implementation with caching of queries
> RestrictedDB - implementation with permissions
> 
> Now, I want to combine these implementations and use.
> Typical use case scenarios are:
> 
> db = RestrictedDB(CachedDB(SimpleDB()))
> db = RestrictedDB(SimpleDB())
> db = RestrictedDB(BetterDB())
> db = RestrictedDB(CachedDB(BetterDB())
> db = CachedDB(SimpleDB())
> etc..
> 
> 
No, that is an argument for multiple-inheritance, mixin classes etc. You 
know when constructing the object what behaviour you want it to have. It 
isn't an argument for changing the behaviour of an existing object 
dynamically.

for an example where it is useful to extend the behaviour of objects have a 
look at Zope3 interfaces and adaptors: an object can be defined to 
implement one or more interfaces, and you can associate additional 
interfaces with objects at runtime. Sometimes an object will implement an 
interface directly, but often the implementation is taken out into a 
separate 'adaptor' class. Whenever you want to use a specified interface on 
an object you simply use the interface class as a constructor on the 
object, and that might find the appropriate adapter or it might just return 
the original object if the interface is provided directly.

e.g. see http://plone.org/documentation/tutorial/five-zope3-walkthrough

Most of the interface/adapter/object relationships in Zope are static, but 
there are interfaces which can be added/removed from objects at runtime: 
each web accessible object has a page where you can add or remove 
interfaces. For example there is an INavigationRoot interface that you can 
add to an object which makes it become the top of the navigation tree for 
that part of the site or IPhotoAlbumAble which lets an object behave as a 
photo album.

Note that this is very different than the forwarding mechanism which 
started this thread: when you use an adaptor you get something which 
implements just the specified interface, you don't have to worry about 
conflicting names for methods or attributes. Also you can have a common 
interface associated with objects which have completely different adapters 
implementing that interface.



From papalagi.pakeha at gmail.com  Tue Oct 23 08:12:40 2007
From: papalagi.pakeha at gmail.com (Papalagi Pakeha)
Date: Wed, 24 Oct 2007 01:12:40 +1300
Subject: numpy confusion
Message-ID: <343d1bca0710230512w1fe6ac64l985cef614583665e@mail.gmail.com>

Hi all,

I'm trying to do some calculations with NumPy but apparently didn't
quite got the basics. For example I need Exponential Moving Average
function. That is, I have an array of values and want to apply a
function F(current, previous) to each element of the array. How can I
pass the 'previous' element to the function? In plain python it would
be a simple loop:

for index in arange(len(in_data[1:])):
    result[index] = F(in_data[index], result[index-1])

I assume it's somehow possible with numpy.frompyfunc() and actually
found one example in SciPy TimeSeries library. Unfortunately I don't
fully understand how that one works :-/

Is anyone able to shed some light on this thing?

Thanks

PaPa


From jstroud at mbi.ucla.edu  Sat Oct 20 17:36:07 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 20 Oct 2007 14:36:07 -0700
Subject: cgi scripts in Mac OS X
In-Reply-To: <mailman.263.1192901090.13605.python-list@python.org>
References: <8BEF967A-9935-4C52-82D0-99051EA9895B@mac.com>
	<mailman.263.1192901090.13605.python-list@python.org>
Message-ID: <ffdsai$jvo$1@daisy.noc.ucla.edu>

Jeff McNeil wrote:
> Your web server needs to be told to execute Python scripts.  You can
> handle it a few different ways, depending on your environment.
> 
> 1. Place your .py script inside of a ScriptAlias'd /cgi-bin/ directory
> which will force it to be executed.
> 
> 2. Rename your .py script to .cgi and add an 'AddHandler cgi-script
> .cgi' to your Apache configuration
> 
> 3. Add an AddHandler cgi-script .py to your Apache configuration.
> 
> This of course assumes that Apache is configured in a way that would
> allow execution and whatnot.  Do yourself a favor and give
> 'http://httpd.apache.org/docs/2.2/howto/cgi.html' a read over as it's
> going to cover a lot more than I just did.

I want to reply to Jeff instead of the original posting, so you don't go 
through all this trouble.

The apache distro with OS X is configured to execute python cgi scripts 
out of the box, so (2) and (3) above are unnecessary on OS X >= 10.3.

So, the OS X specific instructions would be


1. move the script to /Library/WebServer/CGI-Executables:

  sudo mv my_script.py /Library/WebServer/CGI-Executables/my_script.cgi

2. make sure its executable

  sudo chmod a+x /Library/WebServer/CGI-Executables/my_script.cgi

3. add this sh-bang line to the top of the script:

  #! /usr/bin/env python

4. use the localhost path as the action to your script (ellipses mean
    the rest of the attributes of the form tag):

  <form ... action='http://localhost/cgi-bin/my_script.cgi ...>

5. make sure that "Personal Web Sharing" is enabled in the Sharing
    Preference Pane

6. pat self on back for using a REAL operating system and not some
    trash operating system that $ucks real hard:

  http://tinyurl.com/2aoqpf


James

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

http://www.jamesstroud.com


From stephen at blackroses.com  Sun Oct 21 14:48:18 2007
From: stephen at blackroses.com (stephen)
Date: Sun, 21 Oct 2007 14:48:18 -0400
Subject: Tkinter Status on OSX
Message-ID: <990ae6530710211148g7e5053fei1d49a4d7caf69a8d@mail.gmail.com>

Hey guys,
  What is that status of Tkinter on OSX (10.4.10)? I have tried several
installations (Python 2.4.4, 2.5 and 2.5.1) all from the
official distro sites and others each version has the same major
issue.Theproblem is simple to recreate,
use any of the simple sample code available here:
http://www.pythonware.com/library/tkinter/introduction/x5819-patterns.htm
The menu widgets never display...When I literally cut and paste this same
code into a VMWare image (windows and linux)
the same code executes as you'd expect it, all the widgets display and work
properly....literally the same code cut and
pasted from OSX into windows/linux Vmware images, gets different results.

-- 
Zenapse.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/a6a65972/attachment.html>

From horpner at yahoo.com  Wed Oct 31 09:33:04 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 31 Oct 2007 13:33:04 GMT
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
	<1193836481.203103.111400@22g2000hsm.googlegroups.com>
Message-ID: <slrnfih139.1l8.horpner@FIAD06.norwich.edu>

On 2007-10-31, George Sakkis <george.sakkis at gmail.com> wrote:
> On Oct 31, 8:44 am, Neil Cerutti <horp... at yahoo.com> wrote:
>> On 2007-10-30, George Sakkis <george.sak... at gmail.com> wrote:
>>
>>
>>
>> > On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
>> >> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>>
>> >> > This is a FAQ:
>> >> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-function...
>>
>> >> Holy Airy Persiflage Batman!
>>
>> >> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
>> >> win32
>> >> Type "help", "copyright", "credits" or "license" for more information.>>> import timeit
>> >> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
>> >> 0.20332271187463391
>> >> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>>
>> >> 0.48545737364457864
>>
>> > Common mistake; try this instead:
>>
>> > timeit.Timer('seqlen()',
>> >              'seq = range(100); seqlen=seq.__len__').timeit()
>>
>> Why would I want to do that?
>
> To realize that __len__ is actually faster than len in this
> case; your second timing is dominated by the time to do
> attribute lookup.

I knew that going in. Making len a builtin saves us from writing
our own seqlen functions. ;)

-- 
Neil Cerutti
He's a guy who gets up at six o'clock in the morning regardless of what time
it is. --Lou Duva


From sgeiger at ncee.net  Mon Oct 22 09:59:59 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Mon, 22 Oct 2007 08:59:59 -0500
Subject: calling a function from string
In-Reply-To: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
Message-ID: <471CACDF.1070508@ncee.net>

>>> exec("import datetime") ; exec("x = datetime." + "date." + "today()")
>>> print x
2007-10-22




james_027 wrote:
> hi,
>
> i have a function that I could like to call, but to make it more
> dynamic I am constructing a string first that could equivalent to the
> name of the function I wish to call. how could I do that? the string
> could might include name of the module.
>
> for example
>
> a_string = 'datetime.' + 'today()'
>
> how could I call a_string as function?
>
> Thanks
> james
>
>   


-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

-------------- next part --------------
A non-text attachment was scrubbed...
Name: sgeiger.vcf
Type: text/x-vcard
Size: 288 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/3fc7221a/attachment.vcf>

From ganesh.borse at credit-suisse.com  Tue Oct 30 00:15:49 2007
From: ganesh.borse at credit-suisse.com (Borse, Ganesh)
Date: Tue, 30 Oct 2007 12:15:49 +0800
Subject: How to find if a string contains another string
Message-ID: <F444CAE5E62A714C9F45AA292785BED327C3BEC4@esng11p33001.sg.csfb.com>


Sorry, am getting this error.

>>> bigstring="python anaconda boa cobra"
>>> smallone="boa"
>>> smallone in bigstring
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: 'in <string>' requires character as left operand
>>> 
>>> if smallone in bigstring:
...    print 'ok'
... else:
...     print 'nok'
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: 'in <string>' requires character as left operand

Do I need to import any module?

Thanks,
Ganesh
-----Original Message-----
From: Gary Herron [mailto:gherron at islandtraining.com] 
Sent: 30 October 2007 12:09
To: Borse, Ganesh
Cc: python-list at python.org
Subject: Re: How to find if a string contains another string

Borse, Ganesh wrote:
> Hi,
>
> Am new to python.
> May someone please help me know this?
>
> How can we check whether one big string contains another small string?
>
> E.g. 
> bigstring="python anaconda boa cobra"
> smallone="boa"
>   
Use the operator named in:

>>> bigstring="python anaconda boa cobra"
>>> smallone="boa"
>>> smallone in bigstring
True

Often used in if statements like this:

>>> if smallone in bigstring:
...   print 'contained'
... else:
...   print 'not'
...
contained

Gary Herron

> If 0 == contains(bigstring,smallone):
>         print "Yes, boa is snake.."
>
> Is there any function like "contains" or "exists" in python?
> What are different alternatives we have?
>
> Please help.
>
> Thanks and Regards,
> Ganesh
>
> ======================================================================
> ======== Please access the attached hyperlink for an important 
> electronic communications disclaimer:
>
> http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
> ======================================================================
> ========
>
>   


==============================================================================
Please access the attached hyperlink for an important electronic communications disclaimer: 

http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
==============================================================================



From recentcoin at hotmail.com  Sat Oct 27 20:58:24 2007
From: recentcoin at hotmail.com (Ann Thompson)
Date: Sat, 27 Oct 2007 19:58:24 -0500
Subject: Questions for the Python Devs Out There
Message-ID: <BAY144-W251FCF59F93682657950E7CF900@phx.gbl>

I'm with an open source game engine project - Project Angela (www.projectangela.org) and I'm writing in hopes that you guys will have some advice for me.
We're working on an entirely new concept in gaming engines - Ruleset Markup Languge (RML) that will allow game rules to be engine agnostic meaning that if you decide to change platforms you can take your rules - in essence your game - with you without having to do a lot of rewriting.  

That said, I'm looking for advice on how to reach python developers who might be interested in working on this project.  If anyone reading this is interested, please feel free.  We've just moved to a new web site and the forums are at http://www.projectangela.org:8081/plone-site/zforum.  Much information is still stored on our old site http://www.rpg-gamerz.com.  

If you know of places that I might be able to post queries for python developers, I'm certainly open to suggestions.  Since I'm guessing that all of you are quite active in the python community, I'd appreciate pointers.  

TIA,

RecentCoin aka Morrighu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071027/50db18b4/attachment.html>

From davecook at nowhere.net  Sat Oct 13 05:44:38 2007
From: davecook at nowhere.net (Dave Cook)
Date: Sat, 13 Oct 2007 09:44:38 GMT
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<mailman.159.1192260728.927.python-list@python.org>
Message-ID: <as0Qi.8294$UN.1208@newsfe24.lga>

On 2007-10-13, David Tremouilles <david.trem at gmail.com> wrote:

>  I would recommend pyGTK http://www.pygtk.org/

Native GTK on OSX is still in its infancy.  For early adopters only at
this point.  See

http://www.oreillynet.com/articles/author/2414

That leaves PyQt and WxPython as the only other realistic choices.
Licensing issues aside, I think Qt has the most polished and well
thought out API.  The OSX Tiger dev tools include WxPython, though you
may want to install a newer version.  I suggest installing both and
trying some of the included examples.

Another possibility is Jython, if you like the Java way of doing
things.  

Dave Cook







From none at try.invalid  Thu Oct 25 05:02:24 2007
From: none at try.invalid (Pete Bartonly)
Date: Thu, 25 Oct 2007 10:02:24 +0100
Subject: local variable referenced before assignment
Message-ID: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>


Quick question, probably quite a simple matter. Take the follow start of 
a method:


def review(filesNeedingReview):

     for item in filesNeedingReview:
         (tightestOwner, logMsg) = item

         if (logMsg != None):
             for logInfo in logMsg.changed_paths:


This generates the error:

   UnboundLocalError: local variable 'logMsg' referenced before assignment

I thought I'd assigned it in the "(tightestOwner, logMsg) = item" line - 
so in the python interpreter complaining about the fact this assignment 
might not go well?

Thanks!


From kw at codebykevin.com  Sun Oct  7 12:09:16 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Sun, 07 Oct 2007 12:09:16 -0400
Subject: tkinter question
In-Reply-To: <mailman.1607.1191657100.2658.python-list@python.org>
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com><op.tzpugxp2wepdt4@ericb.pragmadev><470629D1.2040404@codebykevin.com><op.tzp40yrqwepdt4@ericb.pragmadev>	<47063964.7000809@codebykevin.com>
	<mailman.1607.1191657100.2658.python-list@python.org>
Message-ID: <470904AC.9090100@codebykevin.com>

Hendrik van Rooyen wrote:
> "Kevin Walzer" <kw at codebykevin.com> wrote:
> 
>> I find "pack" to be more flexible than "grid," so I prefer it for 
>> complex layouts. "grid" is better for simple layouts.
> 
> *does a double take*  are you serious? - my experience is that
> pack is only good for simple single row or single column stuff.
> 
> - Hendrik
> 
> 
Well, I guess it depends on your viewpoint. I find "pack" flexible 
because it allows me to think in terms of top, bottom, right, and left 
in terms of arranging UI elements--it's an elegant way to do it in my 
view. I tend to use "grid" if I have, say, a window with several 
preference items: a label, an entry field, and a button, all arranged in 
rows. "grid" is better for stuff like that, I agree.

See http://www.codebykevin.com/blosxom/business/phynchronicity-new.png: 
this is an application I develop. The layout is all handled by "pack" 
and paned windows. Where you you use "grid" in a layout like this?

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From hyugaricdeau at gmail.com  Thu Oct 18 10:50:41 2007
From: hyugaricdeau at gmail.com (Hyuga)
Date: Thu, 18 Oct 2007 14:50:41 -0000
Subject: Pull Last 3 Months
In-Reply-To: <mailman.155.1192681579.13605.python-list@python.org>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
	<1192665202.277171.132880@t8g2000prg.googlegroups.com>
	<4716AD36.8040302@tim.thechases.com>
	<mailman.155.1192681579.13605.python-list@python.org>
Message-ID: <1192719041.976340.96080@q5g2000prf.googlegroups.com>

On Oct 18, 12:25 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> I prefer the calendar module in that case:
>
> py> import locale
> py> locale.setlocale(locale.LC_ALL, '')
> 'Spanish_Argentina.1252'
> py>
> py> import calendar
> py> calendar.month_abbr[12]
> 'Dic'
> py> def prev_months(since, howmany):
> ...   return [calendar.month_abbr[(since.month-i-2) % 12 + 1] for i in
> range(how
> many)]
> ...
> py> import datetime
> py> prev_months(datetime.datetime(2005,2,10), 4)
> ['Ene', 'Dic', 'Nov', 'Oct']
> py> prev_months(datetime.datetime(2005,10,17), 3)
> ['Sep', 'Ago', 'Jul']

Ah, you beat me to it.  I was going to point out that if you're going
to be using month strings, you should use calendar, since it can also
use the correct locale.  Plus, it offers a ridiculously simple
solution to this problem compared to all the others.

Hyuga



From sjmachin at lexicon.net  Tue Oct  9 17:53:50 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 10 Oct 2007 07:53:50 +1000
Subject: List loops
In-Reply-To: <mailman.20.1191941630.916.python-list@python.org>
References: <mailman.20.1191941630.916.python-list@python.org>
Message-ID: <470bf872@news.eftel.com.au>

On 10/10/2007 12:30 AM, Tommy Grav wrote:
> Hi everyone,
> 
>   I have a list of objects where I have want to do two loops.
> I want to loop over the list and inside this loop, work on all
> the elements of the list after the one being handled in the outer
> loop. I can of course do this with indexes:
> 
>  >>> alist = range(3)

If you REALLY want this to work ONLY on lists of the form range(n), then 
say so. Otherwise give a generic example e.g. alist = ['foo', 42, 
3.14159] so that the channel is not clogged with red-herring responses :-)

>  >>> for i in xrange(len(alist)):
> ...   for j in xrange(i+1,len(alist)):
> ...     print i,j,alist[i],alist[j]
> ...
> 0 1 0 1
> 0 2 0 2
> 1 2 1 2
>  >>>
> 
> 
> Is there a way to do this without using indexes?
> 

Probably not efficiently, if your list size is huge and you want to 
avoid making copies of sub-lists e.g. alist[i+1:].

A somewhat more efficient version of your code:
     n = len(any_old_list)
     for i in xrange(n-1):
         # n-1 avoids possible problems if you need to use i here
         for j in xrange(i+1, n):
             # etc

How big is n likely to be?


From ldo at geek-central.gen.new_zealand  Tue Oct  2 00:24:16 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 02 Oct 2007 17:24:16 +1300
Subject: Why doesn't Python's "robotparser" like Wikipedia's "robots.txt"
	file?
References: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>
Message-ID: <fdsh5m$g8u$1@lust.ihug.co.nz>

In message <HYiMi.9932$JD.6615 at newssvr21.news.prodigy.net>, John Nagle
wrote:

>     For some reason, Python's parser for "robots.txt" files
> doesn't like Wikipedia's "robots.txt" file:
> 
>  >>> import robotparser
>  >>> url = 'http://wikipedia.org/robots.txt'
>  >>> chk = robotparser.RobotFileParser()
>  >>> chk.set_url(url)
>  >>> chk.read()
>  >>> testurl = 'http://wikipedia.org'
>  >>> chk.can_fetch('Mozilla', testurl)
> False
>  >>>

    >>> chk.errcode
    403

Significant?



From dokondr at gmail.com  Tue Oct 16 10:46:26 2007
From: dokondr at gmail.com (Dmitri O.Kondratiev)
Date: Tue, 16 Oct 2007 18:46:26 +0400
Subject: Using Python to access CORBA server?
Message-ID: <53396d9e0710160746o10e9b74fo608b9c65370e3987@mail.gmail.com>

Need advice:
What library can Python client use to access CORBA server using DII (Dynamic
Invocation Interface) ?

Thanks,
Dima
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/85d46ee6/attachment.html>

From kf9150 at gmail.com  Thu Oct  4 13:13:59 2007
From: kf9150 at gmail.com (Kelie)
Date: Thu, 04 Oct 2007 10:13:59 -0700
Subject: using regular express to analyze lisp code
Message-ID: <1191518039.676797.290620@22g2000hsm.googlegroups.com>

hello,

i've spent couple of hours trying to figure out the correct regular
expression to catch a VisualLisp (it is for AutoCAD and has a syntax
that's similar to common lisp) function body. VisualLisp is case-
insensitive. Any line beginning with ";" is for comment (can have
space(s) before ";").

here is an example of VisualLisp function:

(defun get_obj_app_names (obj / rv)
  (foreach app (get_registered_apps (vla-get-document obj))
    (if	(get_xdata obj app)
      (setq rv (cons app rv))
    )
  )
  (if rv
    ;;"This line is comment (comment)"
    ;;) This line is also comment
    (acad_strlsort rv)
    nil
  )
)

for a function named foo, it is easy to find the beginning part of the
function
"(defun foo", but it is hard to find the ")" at the end of code block.
if eventually i can't come up with the solution using regular
expression only, what i was thinking is after finding the beginning
part, which is "(defun foo" in this case, i can count the parenthesis,
ignoring anything inside "" and any line for comment, until i find the
closing ")".

not sure if i've made myself understood. thanks for reading.

kelie



From steve at holdenweb.com  Fri Oct  5 11:45:07 2007
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 05 Oct 2007 11:45:07 -0400
Subject: remove list elements..
In-Reply-To: <1191595624.946031.279190@k79g2000hse.googlegroups.com>
References: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
	<1191595624.946031.279190@k79g2000hse.googlegroups.com>
Message-ID: <fe5m5v$p9n$1@sea.gmane.org>

chris.monsanto at gmail.com wrote:
> On Oct 5, 10:27 am, Abandoned <best... at gmail.com> wrote:
>> Hi..
>> I have a problem..
>> list1=[11, 223, 334, 4223...] 1 million element
>> list2=[22,223,4223,2355...] 500.000 element
>>
>> I want to difference list1 to list2 but order very importent..
>>
>> My result must be:
>> list3=[11,334,...]
>>
>> I do this use FOR easly but the speed very imported for me. I want to
>> the fastest method please help me.
>>
>> I'm sorry my bad english.
>>
>> King regards..
> 
> Research the "set" data type. :)
> 
Probably not a very helpful suggestion given that ordering is stated to 
be very important.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From enleverlesX.XmcX at XmclaveauX.com  Wed Oct 10 10:46:45 2007
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI (MVP))
Date: Wed, 10 Oct 2007 16:46:45 +0200
Subject: [ANN] Data Plotting Library DISLIN 9.2
In-Reply-To: <fei5m4$8ur$2@gwdu112.gwdg.de>
References: <fei5m4$8ur$2@gwdu112.gwdg.de>
Message-ID: <470cf535$0$25952$ba4acef3@news.orange.fr>

Thanks!  I play with this library, for fun ; with success.




From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 15:38:51 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 20:38:51 +0100
Subject: appending into a list
In-Reply-To: <mailman.642.1193747327.13605.python-list@python.org>
References: <aa405c1f0710292228x6f829b6eg2d2c38741a2f6131@mail.gmail.com>
	<mailman.642.1193747327.13605.python-list@python.org>
Message-ID: <47278878$0$31486$426a74cc@news.free.fr>

c james a ?crit :
> Beema shafreen wrote:
> 
>>  2721520      2721569    A_16_P21360235    199    -49
>>  2721768      2721821    A_16_P03641971    139    -53
>>  2721960      2722004    A_16_P21360237    312    -44
>>I need to append the column D and E into a list:
>>                            in such a way that the list should have 
>>[D,E,D,E,D,E........]
>>How do i do it.
>>
>>regards
>>shafreen
> 
> 
> Without a header, you could use something like
> 
> data = [x.split()[-2:] for x in open(filename).readlines()]
> 
> With header
> 
> f = open(filename)
> f.readline()
> data = [x.split()[-2:] for x in f.readlines()]
> 	
> 
Or just use the CSV module ?


From jholloway7 at gmail.com  Mon Oct  8 17:23:50 2007
From: jholloway7 at gmail.com (Joe Holloway)
Date: Mon, 8 Oct 2007 16:23:50 -0500
Subject: pytz has so many timezones!
In-Reply-To: <1191851248.337909.61900@o80g2000hse.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<5mu8nqFf6tvaU1@mid.uni-berlin.de>
	<1191840365.421959.33250@g4g2000hsf.googlegroups.com>
	<1191851248.337909.61900@o80g2000hse.googlegroups.com>
Message-ID: <8fe048f70710081423v401fe2ffv9add1da03d045a17@mail.gmail.com>

On 10/8/07, Sanjay <skpatel20 at gmail.com> wrote:
> 2. Mapping the timezones to countries is a nice idea. Any idea how to
> go about it - I mean whether I have to collect the data manually and
> do it, or some better way is available - will help me a lot.

You might find some good information by brushing up on the Olson time
zone database:

http://en.wikipedia.org/wiki/Zoneinfo
http://www.twinsun.com/tz/tz-link.htm


From mail at microcorp.co.za  Sat Oct 13 04:21:59 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 13 Oct 2007 10:21:59 +0200
Subject: [Pyro] ConnectionClosedError
References: <1192220524.837248.173230@i13g2000prf.googlegroups.com>
Message-ID: <019801c80d75$2a7c8f00$03000080@hendrik>

"George Sakkis" <ge...ail.com> wrote:


> Didn't have much luck with this in the Pyro mailing list so I am
> trying here, just in case. I have a Pyro server running as a daemon
> process and occasionally (typically after several hours or days of
> uptime) a ConnectionClosedError is raised when a client calls a remote
> method. Both client and server run on the same machine, so I don't
> think it's an actual network connectivity issue. The problem is that
> once this happens, it is persistent; retrying to call a few times does
> not work although the server process is still alive. The current
> "solution" is to manually kill the server and restart it but obviously
> this is not ideal. Is there a way to either prevent or at least
> recover automatically the server when it hangs ?

If restarting the server sorts it, why don't you run the server as a 
subprocess in a higher level script, and exit with an error code
if the error strikes?

something like:

While True:
    error = os.system('python current_server_name.py')
    if error:
        print 'Restarting the server - error returned was:',error
        continue
    else:
        break

It would obviously need a try - except in the existing
code to catch the exception, and some jiggery-pokery
if the code is threaded to ensure a "clean error exit",
but apart from that, I can't think of a reason for it not
to work.

It may be that the reason for your hang up is also a
threading issue - it could be that the server is alive but
that some critical thread has been killed by the error.
But here I am guessing...

- Hendrik




From jzgoda at o2.usun.pl  Thu Oct  4 11:19:21 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Thu, 04 Oct 2007 17:19:21 +0200
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
Message-ID: <fe30k1$7ej$1@nemesis.news.tpi.pl>

Wojciech Gryc napisa?(a):

> I'm a seasoned Java programmer and quite a big fan of interfaces...
> i.e. The idea that if I make a number of distinct classes that
> implement interface X, I can pass them all as parameters to functions
> or whatnot that require an X object.
> 
> Is there something similar in Python?

The closest thing I saw is zope.interface.

> What I'd like to do is create a feature detection system for my work
> -- specifically, a general class / interface called "Feature" and then
> subclasses that implement functions like isFeaturePresent() in all of
> their different and unique ways. I'd love to hear how I can do this in
> Python.

I am sure you wouldn't need interfaces to do such things in Python.
"Duck typing" is how we call this feature. :)

-- 
Jarek Zgoda
Skype: jzgoda | GTalk: zgoda at jabber.aster.pl | voice: +48228430101

"We read Knuth so you don't have to." (Tim Peters)


From jorgen.maillist at gmail.com  Tue Oct  2 12:43:37 2007
From: jorgen.maillist at gmail.com (Jorgen Bodde)
Date: Tue, 2 Oct 2007 18:43:37 +0200
Subject: toprettyxml messes up with whitespaces
Message-ID: <11e49df10710020943v5e4cbee8m304062b26d7f126@mail.gmail.com>

Hi all,

I parse an XML file, replace a node with a new one (like updating
cache) and write it back. Every write, new spaces are added. For
example, first read - update - write cycle;

<var name="APPNAME" status="undefined">
     My First App								
</var>

Second cycle:

<var name="APPNAME" status="undefined">
                 My First App								
</var>

Third cycle:

<var name="APPNAME" status="undefined">
                                           My First App								
</var>


And this goes on. The node is one that is not touched in the XML, it
is simply written back after reading. I have the same with void spaces
in between the nodes, I managed to compensate that by stripping the
lines.

I would like to use toprettyxml to make it user editable and viewable.
But this is really weird. How can I circumvent this behaviour?

regards,
- Jorgen


From carsten at uniqsys.com  Tue Oct  2 07:33:09 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Tue, 02 Oct 2007 07:33:09 -0400
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191294265.611162.57730@g4g2000hsf.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<1191292451.096937.63000@50g2000hsm.googlegroups.com>
	<1191294265.611162.57730@g4g2000hsf.googlegroups.com>
Message-ID: <1191324789.3269.10.camel@localhost.localdomain>

On Tue, 2007-10-02 at 03:04 +0000, bramble wrote:
> But Py3k is all about breaking compatibility

That's a complete distortion of Python 3.0's mission. Python 3.0 breaks
backwards compatibility only where there exist good reasons to do so. As
Guido put it in a recent Python-3000 post, "Python 3000 is boldly
choosing to be backwards compatible, except in cases where a real
benefit can be obtained by being incompatible."

So, unless you can make a case that a real benefit can be obtained by
removing Tkinter, it'll stay.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From createdefuture at gmail.com  Sat Oct 20 04:07:16 2007
From: createdefuture at gmail.com (createdefuture at gmail.com)
Date: Sat, 20 Oct 2007 01:07:16 -0700
Subject: is this a feasible solution??
Message-ID: <1192867636.646889.291900@q5g2000prf.googlegroups.com>

chech wat is happening here..

http://www.createthefuturecontest.com/pages/view/entriesdetail.html?entryID=798



From MDiPierro at cti.depaul.edu  Tue Oct 16 14:21:12 2007
From: MDiPierro at cti.depaul.edu (DiPierro, Massimo)
Date: Tue, 16 Oct 2007 13:21:12 -0500
Subject: re.sub
In-Reply-To: <4715010B.7080203@tim.thechases.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>,
	<4715010B.7080203@tim.thechases.com>
Message-ID: <C1AA20CAC1E41647BFF1D41215EDD4755C48F84DD0@wagner.cti.depaul.edu>

Let me show you a very bad consequence of this...

a=open('file1.txt','rb').read()
b=re.sub('x',a,'x')
open('file2.txt','wb').write(b)

Now if file1.txt contains a \n or \" then file2.txt is not the same as file1.txt while it should be.
Massimo

________________________________________
From: Tim Chase [python.list at tim.thechases.com]
Sent: Tuesday, October 16, 2007 1:20 PM
To: DiPierro, Massimo
Cc: python-list at python.org; Berthiaume, Andre
Subject: Re: re.sub

> Even stranger
>
>  >>> re.sub('a', '\\n','bab')
> 'b\nb'
>  >>> print re.sub('a', '\\n','bab')
> b
> b

That's to be expected.  When not using a print statement, the raw
evaluation prints the representation of the object.  In this
case, the representation is 'b\nb'.  When you use the print
statement, it actually prints the characters rather than their
representations.  No need to mess with re.sub() to get the behavior:

   >>> s = 'a\nb'
   >>> s
   'a\nb'
   >>> print s
   a
   b
   >>> print repr(s)
   'a\nb'

-tkc


From mccredie at gmail.com  Thu Oct 18 17:04:37 2007
From: mccredie at gmail.com (Matimus)
Date: Thu, 18 Oct 2007 21:04:37 -0000
Subject: image resize question
In-Reply-To: <ff8a9a$i5d$1@foggy.unx.sas.com>
References: <ff8a9a$i5d$1@foggy.unx.sas.com>
Message-ID: <1192741477.416784.279530@t8g2000prg.googlegroups.com>

On Oct 18, 11:56 am, "Tim Arnold" <tim.arn... at sas.com> wrote:
> Hi, I'm using the Image module to resize PNG images from 300 to 100dpi for
> use in HTML pages, but I'm losing some vertical and horizontal lines in the
> images (usually images of x-y plots).
>
> Here's what I do:
> import Image
> def imgResize(self,filename):
>         img = Image.open(filename)
>         dpi = img.info.get('dpi')
>         if dpi and 295 < int(dpi[0]) < 305:
>             wd = img.size[0]/3.0 #convert from 300dpi to 100dpi
>             ht = img.size[1]/3.0
>             newimg= img.resize((int(wd),int(ht)))
>             newimg.save(filename)
>
> imgResize('myimage.png')
>
> Can someone point me to a better way so I don't lose the reference lines in
> the images?
> thanks,
> --Tim Arnold

Resize accepts a second parameter that is used to determine what kind
of downsampling filter to use (http://www.pythonware.com/library/pil/
handbook/image.htm). The default is Image.NEAREST, which just samples
the nearest pixel and results in the type of data loss you are seeing.
If you want something better try one of the following and see which
works best for you: Image.BILINEAR, Image.BICUBIC or Image.ANTIALIAS.

example:
...
    newimg = img.resize((int(wd),int(ht)),Image.ANTIALIAS)
...

Matt



From deets at nospam.web.de  Wed Oct 17 10:21:40 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 16:21:40 +0200
Subject: Order by value in dictionary
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
	<5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
Message-ID: <5nmk3kFiv0krU2@mid.uni-berlin.de>

George Sakkis wrote:

> On Oct 17, 10:06 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> Diez B. Roggisch wrote:
>> > Abandoned wrote:
>>
>> >> Hi..
>> >> I have a dictionary like these:
>> >> a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
>> >> element
>> >> I want to sort this by value and i want to first 100 element..
>> >> Result must be:
>> >> [b, a, d, c .....] ( first 100 element)
>>
>> >> I done this using FOR and ITERATOR but it tooks 1 second and this is
>> >> very big time to my project.
>> >> I want to learn the fastest method..
>>
>> > That is the fastest method, unless you write your own ordered dict
>> > implementation that sorts by value. But that will most probably lose
>> > the time when holding up the invariant when inserting key/values into
>> > the dictionary.
>>
>> Actually, I somehow read the FOR and ITERATOR above as something like
>> this:
>>
>> entries = sorted(a.items(), key=lambda v: v[1])[:100]
>>
>> The gist of my statement above is nontheless the same: if you want sorted
>> results, you need to sort...
>>
>> Diez
> 
> If you want the top 100 out of 100K, heapq.nlargest is more than an
> order of magnitude faster.

Oh, cool. Didn't know about that. I'm a bit rusty on how heapsort works,
gotta check that out.

diez


From mccredie at gmail.com  Thu Oct 11 12:49:32 2007
From: mccredie at gmail.com (Matimus)
Date: Thu, 11 Oct 2007 16:49:32 -0000
Subject: Finding Peoples' Names in Files
In-Reply-To: <felhv8$18g$1@solaris.cc.vt.edu>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>
	<felhv8$18g$1@solaris.cc.vt.edu>
Message-ID: <1192121372.931784.171120@d55g2000hsg.googlegroups.com>

On Oct 11, 9:11 am, brad <byte8b... at gmail.com> wrote:
> cokofree... at gmail.com wrote:
> > However...how can you know it is a name...
>
> OK, I admitted in my first post that it was a crazy question, but if one
> could find an answer, one would be onto something. Maybe it's not a 100%
> answerable question, but I would guess that it is an 80% answerable
> question... I just don't know how... yet :)
>
> Besides admitting that it's a crazy question, I should stop and explain
> how it would be useful to me at least. Is a credit card number itself
> valuable? I would think not. One can easily re and luhn check for credit
> card numbers located in files with a great degree of accuracy, but a
> number without a name is not very useful to me. So, if one could
> associate names to luhn checked numbers automatically, then one would be
> onto something. Or at least say, "hey, this file has luhn validated CCs
> *AND* it seems to have people's names in it as well." Now then, I'd have
> less to review or perhaps as much as I have now, but I could push the
> files with numbers and names to the top of the list so that they would
> be reviewed first.
>
> Brad

What the hell are you doing? Your post sounds to me like you have a
huge amount of stolen, or at the very least misapprehended, data. Now
you want to search it for credit card numbers and names so that you
can use them.

I am not cool with this! This is a public forum about a programming
language. What makes you think that anybody in this forum will be cool
with that. Perhaps you aren't doing anything illegal, but it sure is
coming off that way. If you are doing something illegal I hope you get
caught.

At the very least, you might want to clarify why you are looking for
such capability so that you don't get effectively black-listed (well,
by me at least).

Matt



From steven.bethard at gmail.com  Wed Oct 24 14:24:36 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 24 Oct 2007 12:24:36 -0600
Subject: optparse help output
In-Reply-To: <1193246763.834306.68660@i13g2000prf.googlegroups.com>
References: <1193240835.563154.113810@e9g2000prf.googlegroups.com>
	<mailman.417.1193241732.13605.python-list@python.org>
	<1193246763.834306.68660@i13g2000prf.googlegroups.com>
Message-ID: <o-6dnVl4m4p4EILanZ2dnUVZ_i2dnZ2d@comcast.com>

Dan wrote:
> On Oct 24, 12:06 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
>>> I've been using optparse for a while, and I have an option with a
>>> number of sub-actions I want to describe in the help section:
>>>     parser.add_option("-a", "--action",
>>>                       help=\
>> [snipped formatted help]> """)
>>
>>> Unfortunately, when I run the script with --help, this is what I get
>>> for the -a option:
>> [snipped munged formatting of help]
>>
>>> Is there any way to get the formatting I want?
>> I had the same issue:
>>
>> http://groups.google.com/group/comp.lang.python/browse_thread/thread/...
>>
>> and was directed by Ben Finney to check out a custom formatter.
>> I got it working to my satisfaction and posted it in that thread:
>>
>> http://groups.google.com/group/comp.lang.python/msg/09f28e26af0699b1
>>
> That was incredibly helpful. I did alter it to format paragraphs, but
> maintain the double newlines. Also, I made a few changes to work with
> the 2.3 version of optparse. Posted below for anyone who might want
> it. (Also to work as a standalone .py file)

You might consider posting it to the optik tracker:

     http://optik.sourceforge.net/

A lot of people have had similar requests.

Steve


From electronixtar at gmail.com  Mon Oct 29 00:54:31 2007
From: electronixtar at gmail.com (est)
Date: Sun, 28 Oct 2007 21:54:31 -0700
Subject: Any library parsing wikipedia API
Message-ID: <1193633671.884139.156830@e9g2000prf.googlegroups.com>

I got some text via wikipedia API

http://en.wikipedia.org/w/api.php?action=query&prop=revisions&titles=Chengdu&rvprop=content&redirects&format=xml&callback=wikiCallback

but it's not HTML formated. So how can I parse these texts to standard
HTML? Are there any library in python could do this?



From adam at atlas.st  Wed Oct 17 16:01:48 2007
From: adam at atlas.st (Adam Atlas)
Date: Wed, 17 Oct 2007 13:01:48 -0700
Subject: Noob questions about Python
In-Reply-To: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
Message-ID: <1192651308.849488.302540@v23g2000prn.googlegroups.com>

On Oct 17, 3:37 pm, Ixiaus <parnel... at comcast.net> wrote:
> I have recently (today) just started learning/playing with Python. So
> far I am excited and impressed (coming from PHP background).
>
> I have a few questions regarding Python behavior...
>
> val = 'string'
> li = list(val)
> print li.reverse()
>
> returns nothing, but,
>
> val = 'string'
> li = list(val)
> li.reverse()
> print li
>
> returns what I want. Why does Python do that?

Because list.reverse() modifies a list, it doesn't create and return a
new one.

A common idiom for returning a reversed copy of a list is:
  li[::-1]

You can also use the builtin "reversed" -- it doesn't return a list,
but rather a reverse iterator. You can create a list from an iterator
by passing it to the list() initializer, like list(reversed(li)).



From juan at juanreyero.com  Tue Oct 16 02:58:23 2007
From: juan at juanreyero.com (juan at juanreyero.com)
Date: Tue, 16 Oct 2007 08:58:23 +0200
Subject: ANN: magnitude 0.9.1
Message-ID: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>

I am happy to announce the first release of magnitude, a
library for computing with physical quantities. It is
released under the Apache v. 2 license.

A physical quantity is a number with a unit, like 10
km/h. Units can be any of the SI units, plus a bunch of
non-SI, bits, dollars, and any combination of them. They can
include the standard SI prefixes. Magnitude can operate with
physical quantities, parse their units, and print them. You
don't have to worry about unit consistency or conversions;
everything is handled transparently. By default output is
done in basic SI units, but you can specify any output unit,
as long as it can be reduced to the basic units of the
phisical quantity.

Home page: http://juanreyero.com/magnitude/ 

Feedback is appreciated.

Cheers,

jm


From makobu.mwambiriro at gmail.com  Thu Oct 11 05:56:55 2007
From: makobu.mwambiriro at gmail.com (makobu)
Date: Thu, 11 Oct 2007 09:56:55 -0000
Subject: MSN Bot Class
Message-ID: <1192096615.512971.46640@y42g2000hsy.googlegroups.com>

##########################################################################
# MsnClient Class -- A basic class that enables one to create an MSN
client this way:
#  x = MsnClient(to_msnid, bot_msnid, bot_msnid_password, messege);
x.tell()
# (C) Timothy Makobu, 2007
##########################################################################

import select
import socket
import thread
import msnlib
import msncb
import time
import sys

class MsnClient:
    def __init__(self, to_id='', bot_id='', bot_pass='',
message='Hi :D'):
        """ MsnClient(to_msnid, bot_msnid, bot_msnid_password,
messege) """
        self.to_id = to_id
        self.message = message
        self.msn_obj = msnlib.msnd()
        self.msn_obj.cb = msncb.cb()
        self.msn_obj.email = bot_id
        self.msn_obj.pwd = bot_pass
        self.msn_obj.login()
        self.msn_obj.sync()
        self.msn_obj.change_status('online')

    def _send_message(self):
        time.sleep(15)
        print 'Here 2'
        print 'here 3', self.msn_obj.sendmsg(self.to_id, self.message)
        time.sleep(30)
        self._quit()
    def _quit(self):
        try:
            self.msn_obj.disconnect()
        except:
            pass
        sys.exit(0)
    def tell(self):
        thread.start_new_thread(self._send_message, ())
        while 1:
            self.nd = self.msn_obj.pollable()
            self.in_fd = self.nd[0]
            self.out_fd = self.nd[1]
            try:
                self.poller = select.select(self.in_fd, self.out_fd,
[], 0)
            except:
                self._quit()
            for self.i in self.poller[0] + self.poller[1]:
                try:
                    self.msn_obj.read(self.i)
                except('SocketError', socket.error), err:
                    if self.i != self.msn_obj:
                        self.msn_obj.close(self.i)
                    else:
                        self._quit()
            time.sleep(0.1)



From gherzig at fmed.uba.ar  Wed Oct 10 21:13:27 2007
From: gherzig at fmed.uba.ar (gherzig at fmed.uba.ar)
Date: Wed, 10 Oct 2007 22:13:27 -0300 (ART)
Subject: multimethods decorator
In-Reply-To: <470d0914$0$24295$426a74cc@news.free.fr>
References: <mailman.30.1192028986.927.python-list@python.org>
	<470d0914$0$24295$426a74cc@news.free.fr>
Message-ID: <24347.190.55.67.65.1192065207.squirrel@www.webmail.fmed.uba.ar>

> Gerardo Herzig a ?crit :
>> Hi all. Im reading the Gido's aproach using decorators at
>> http://www.artima.com/weblogs/viewpost.jsp?thread=101605
>>
>> It looks good to me, but the examples shows the functionality using
>> functions.
>> Now, when i try to give this decorator into a method, if i try the
>>
>> class test(object):
>>    @multimethod(...)
>>    def met(self, ...):
>>
>> The multimethod decorator needs the types of the arguments, and, if the
>> met method requires self as the first argument, the multimethod should
>> look like
>> @multimethod(self.__class__, bla, ble) or some like that...
>>
>> Now i know that im wrong, because i have this error
>>  >@multimethod(self.__class__)
>>  >NameError: name 'self' is not defined
>
> Indeed. Neither self (which will only be known at method call time) nor
> even the 'test' class (which is not yet defined when the decorator is
> executed) are availables.
Doh!
>
>> So what would be the first argument to @multimethod??
>
> A string ?-)
Ah? And what will that string contains?
>
> FWIW, there's already an implementation of multiple dispacth by Mr. Eby...
Oh yes, i found the dispatch version of multimethods, but i have not tried
it yet. Do you think is better this version than Guido's?

Thanks!
Gerardo



From jorgen.maillist at gmail.com  Tue Oct  9 05:20:23 2007
From: jorgen.maillist at gmail.com (Jorgen Bodde)
Date: Tue, 9 Oct 2007 11:20:23 +0200
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <QcGdnaJX9NoabJ7anZ2dneKdnZzinZ2d@infopact.nl>
References: <mailman.1402.1191343422.2658.python-list@python.org>
	<QcGdnaJX9NoabJ7anZ2dneKdnZzinZ2d@infopact.nl>
Message-ID: <11e49df10710090220m569e4495weac701326022523f@mail.gmail.com>

Dear list,

Thanks for the suggestions and clarification. After playing with XML
for a while I noticed whitespaces can indeed be more important then I
thought. I did came to the following conclusions;

1. Removing whitespaces was done by my code, not by the
xml.dom.minidom so I regret the fact I said that it removed
whitespaces automatically
2. toprettyxml() should however be smarter with outputting the XML. If
it adds whitespaces in the sake of formatting, it should check how
many of the whitespaces are already there. Consecutive read / modify /
write actions should not cause an explosive growth of whitespaces.
When I use toprettyxml() I am obviously not interested in whitespaces
in front of the text in the nodes, or else I would have outputted it
differently.

Thanks all for the feedback,
- Jorgen


From thattommyhall at gmail.com  Sat Oct 27 13:57:06 2007
From: thattommyhall at gmail.com (thattommyhallll@gmail.com)
Date: Sat, 27 Oct 2007 17:57:06 -0000
Subject: xmpfilter-a-like for python (code annotation)
In-Reply-To: <5ohaonFmgu6mU3@mid.uni-berlin.de>
References: <1193505013.821461.149470@d55g2000hsg.googlegroups.com>
	<5ohaonFmgu6mU3@mid.uni-berlin.de>
Message-ID: <1193507826.361771.151800@50g2000hsm.googlegroups.com>

On Oct 27, 6:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Sat, 27 Oct 2007 17:10:13 +0000, thattommyhal... at gmail.com wrote:
> >http://eigenclass.org/hiki/xmpfilter
> > looks cool , anything like this for python? any reason that we culd
> > not do simmilar ?
>
> I just read that page and am a little confused.  This program adds
> assertions based on the actual code, i.e. if the code is wrong it
> nonetheless adds assertions that don't fail.  I always thought one writes
> assertions to test what the code should do and not what it actually does!?
>
> Ciao,
>         Marc 'BlackJack' Rintsch

Its more the inline annotation lie here http://eigenclass.org/hiki.rb?xmpfilter#l4
that I wanted



From pythonnews at nospam.jmbc.fr  Tue Oct 16 16:10:09 2007
From: pythonnews at nospam.jmbc.fr (jean-michel bain-cornu)
Date: Tue, 16 Oct 2007 22:10:09 +0200
Subject: Simple HTML template engine?
In-Reply-To: <1192549461.574326.317440@y27g2000pre.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<47147166$0$25938$ba4acef3@news.orange.fr>
	<1192549461.574326.317440@y27g2000pre.googlegroups.com>
Message-ID: <47151aa7$0$21142$7a628cd7@news.club-internet.fr>

> These days there seems to be more coverage of different needs.  For
> instance, Mako looks like something I might have used if it had been
> around back then.
> 
It's probably the same to me.
And many times, the simple python templating system %(var)s is good 
enough...


From carsten at uniqsys.com  Wed Oct  3 20:12:53 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 03 Oct 2007 20:12:53 -0400
Subject: module confusion
In-Reply-To: <fe141n$9u8$1@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
Message-ID: <1191456773.3271.18.camel@localhost.localdomain>

On Thu, 2007-10-04 at 11:11 +1300, Lawrence D'Oliveiro wrote:
> In Python, all names _are_ variables. They are not "bound" to objects. The
> value of os.path is a pointer.

No. "os.path" refers to the object that's known as the "path" attribute
of the object known as "os". That object, in turn, is a module.

>  It's implemented as a pointer,

While it is true that namespaces are implemented in CPython as
collections of pointers to PyObject structures, that's an irrelevant
implementation detail. I doubt that they are implemented as pointers in
Jython, PyPy, or IronPython.

>  it has all the semantics of a pointer.

No, it doesn't. A pointer means the physical address of a memory
location, which implies that you can overwrite that memory location. Can
you do that in Python?

> Honestly, why do people react to the word "pointer" as though computers have
> to wear underwear to conceal something shameful going on in their nether
> regions?

I won't speak for "people", but maybe it's because Python acts precisely
as this underwear that does conceal the low-level regions of memory
management and bit-twiddling that Python programmers like to avoid in
favor of solving higher-level problems.

If it helps you to think of Python names as "kind of like pointers,"
you're free to do so, but it's only a weak analogy that can lead
beginners to drawing incorrect conclusions.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From erik at myemma.com  Tue Oct  2 19:34:04 2007
From: erik at myemma.com (Erik Jones)
Date: Tue, 2 Oct 2007 18:34:04 -0500
Subject: global variables
In-Reply-To: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
References: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
Message-ID: <B801EF69-7378-4057-AC7C-5515263CF6DB@myemma.com>


On Oct 2, 2007, at 5:20 PM, TheFlyingDutchman wrote:

> Does anyone know how the variables label and scale are recognized
> without a global statement or parameter, in the function resize() in
> this code:
>
>
>
> #!/usr/bin/env python
>
> from Tkinter import *
>
> def resize(ev=None):
>       label.config(font='Helvetica -%d bold' % \
>           scale.get())
>
>
> top = Tk()
> top.geometry('250x150')
>
> label = Label(top, text='Hello World!',
>     font='Helvetica -12 bold')
> label.pack(fill=Y, expand=1)
>
> scale = Scale(top, from_=10, to=40,
>      orient=HORIZONTAL, command=resize)
> scale.set(12)
> scale.pack(fill=X, expand=1)
>
> quit = Button(top, text='QUIT',
>     command=top.quit, activeforeground='white',
>     activebackground='red')
> quit.pack()
>
> mainloop()

It's tricky.  Basically, you only need to use the global statement if  
you intend binding operations (assignments) on the variable name and  
want those to affect the global variable.  If you perform binding  
operations without the global statement it is assumed that you are  
defining a local variable.

class foo(object):
	def foofoo(self):
		print 7

def showfoo():
	f.foofoo()

f = foo()
showfoo()
print f

outputs:

7
<__main__.foo object at ... >

with the same class:

def showfoo():
	global f
	f.foofoo()
	f = 6

f = foo()
showfoo()
f
  outputs:

7
6

with the same class again:

deff showfoo():
	f.foofoo()
	f = 6

f = foo()
showfoo()

outputs:

Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "<stdin>", line 2, in showfoo
UnboundLocalError: local variable 'f' referenced before assignment

The difference in the last one is that when showfoo() is compiled the  
assignment to f without any global statement makes f a local variable  
and a method is called on it before it is bound which results in the  
exception.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From larry.bates at websafe.com  Mon Oct 22 10:12:28 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 22 Oct 2007 09:12:28 -0500
Subject: Get the instance name from a list by Reflection
In-Reply-To: <mailman.265.1192911361.13605.python-list@python.org>
References: <mailman.265.1192911361.13605.python-list@python.org>
Message-ID: <z8WdndtGn4VqMoHanZ2dnUVZ_j-dnZ2d@comcast.com>

Jean-Paul Calderone wrote:
> On Sat, 20 Oct 2007 21:10:34 +0200 (CEST), sccs cscs <zorg724 at yahoo.fr> 
> wrote:
>> Hello,
>> I cannot find into documentation how to get the instance name. I found 
>> the attributes __dict__,__class__ ,__bases__ __name__ ,
>> but if i have the code:
>>
>> class A :pass
>> a1 = A ()
>> a2 = A ()
>> aList = [a1,a2]
>> for elem in aList :
>>    print elem.__instance_name__ ???
>>
>> I expect to have "a1" "a2" ...
>> But it does not work ...
>> help please
>> Zorgi
> 
>    $ python
>    Python 2.4.3 (#2, Oct  6 2006, 07:52:30)
>    [GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
>    Type "help", "copyright", "credits" or "license" for more information.
>    >>> class A: pass
>    ...
>    >>> a1 = A()
>    >>> a2 = A()
>    >>> aList = [a1, a2]
>    >>> import __main__
>    >>> from twisted.python.reflect import objgrep, isSame
>    >>> for elem in aList:
>    ...     objgrep(__main__, elem, isSame)
>    ...
>    ['.aList[0]', '.elem', '.a1']
>    ['.aList[1]', '.elem', '.a2']
>    >>>
> 
> Don't see how this could help,
> 
> Jean-Paul
If you want to accomplish something like this use the following:

class A(object):
     def __init__(self, name=None):
         self.name=name

aList=[]
aList.append(A(name='a1')
aList.append(A(name='a2')
for elem in aList:
     print elem.name

-Larry


From gagsl-py2 at yahoo.com.ar  Wed Oct  3 07:12:13 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 08:12:13 -0300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz>
Message-ID: <op.tzmb2nzyx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 03 Oct 2007 07:12:17 -0300, Lawrence D'Oliveiro  
<ldo at geek-central.gen.new_zealand> escribi?:

> In message <mailman.1404.1191345163.2658.python-list at python.org>, Robert
> Kern wrote:
>
>> Lawrence D'Oliveiro wrote:
>>
>>> In message <mailman.1379.1191301581.2658.python-list at python.org>,  
>>> Robert
>>> Kern wrote:
>>>
>>>> Not all of the modules in a package are imported by importing the
>>>> top-level package.
>>>
>>> You can't import packages, only modules.
>>>
>>>> os.path is a particularly weird case because it is just an alias to  
>>>> the
>>>> platform-specific path-handling module; os is not a package.
>>>
>>> os is a module, os.path is a variable within that module. That's all
>>> there is to it.
>>
>> Yes, but os.path is also module. That's why I said it was a weird case.
>
> You can't have modules within modules. os.path isn't an exception--see
> below.
>
>> In [1]: import os
>>
>> In [2]: type(os.path)
>> Out[2]: <type 'module'>
>
> On my Gentoo system:
>
>     >>> import os
>     >>> os.path
>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
>
> It's just a variable that happens to point to the posixpath module.

A "module" is a certain type of Python objects, like ints, functions,  
exceptions and all else.
The easiest way to create a module is to load it from file, but some  
modules are already built into the interpreter, and you can even create a  
module from scratch.

py> import os
py> type(os)
<type 'module'>
py> type(os.path)
<type 'module'>
py> os
<module 'os' from 'c:\apps\python25\lib\os.pyc'>
py> import sys
py> type(sys)
<type 'module'>
py> sys
<module 'sys' (built-in)>
py> ModuleType = type(os)
py> newmodule = ModuleType('newmodule')
py> newmodule.a = 3
py> newmodule
<module 'newmodule' (built-in)>
py> type(newmodule) is type(os.path)
True

"os" is a name that refers to the os module object. "os.path" means "the  
path attribute in the object referenced by the name os", that happens to  
be another module too.
os is not a package; os.path is set when the os module is imported,  
depending on the platform. It may be ntpath, posixpath, macpath, or  
whatever. On Windows:

py> import ntpath
py> os.path is ntpath
True
py> import macpath
py> import posixpath
py> macpath.sep
':'
py> ntpath.sep
'\\'

Apart from that, there is no magic involved, just plain attribute access  
like everywhere else.

-- 
Gabriel Genellina



From byte8bits at gmail.com  Mon Oct 29 17:26:06 2007
From: byte8bits at gmail.com (brad)
Date: Mon, 29 Oct 2007 17:26:06 -0400
Subject: A Python 3000 Question
In-Reply-To: <87abq1mxqc.fsf@merkury.smsnet.pl>
References: <fg5fku$5c1$1@solaris.cc.vt.edu> <87abq1mxqc.fsf@merkury.smsnet.pl>
Message-ID: <fg5j5p$a3t$1@solaris.cc.vt.edu>

Rob Wolfe wrote:

> I wonder why people always complain about `len` function but never
> about `iter` or `pprint.pprint`? :)

Not complaining. len is simple and understandable and IMO fits nicely 
with split(), strip(), etc... that's why I used it as an example, but 
list(), etc. could be used as examples as well:

a_string.list() instead of list(a_string)

> And to answer the question. In OO programming generic functions
> are no less important than classes and objects.

Do they not take away from the OOness of the overall language and 
introduce inconsistencies?


From Leo.Kislov at gmail.com  Wed Oct 24 03:20:35 2007
From: Leo.Kislov at gmail.com (Leo Kislov)
Date: Wed, 24 Oct 2007 07:20:35 -0000
Subject: japanese encoding iso-2022-jp in python vs. perl
In-Reply-To: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
References: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
Message-ID: <1193210435.469081.168360@v29g2000prd.googlegroups.com>

On Oct 23, 3:37?am, kettle <Josef.Robert.No... at gmail.com> wrote:
> Hi,
> ? I am rather new to python, and am currently struggling with some
> encoding issues. ?I have some utf-8-encoded text which I need to
> encode as iso-2022-jp before sending it out to the world. I am using
> python's encode functions:
> --
> ?var = var.encode("iso-2022-jp", "replace")
> ?print var
> --
>
> ?I am using the 'replace' argument because there seem to be a couple
> of utf-8 japanese characters which python can't correctly convert to
> iso-2022-jp. ?The output looks like this:
> ???????????????
>
> ?However if use perl's encode module to re-encode the exact same bit
> of text:
> --
> ?$var = encode("iso-2022-jp", decode("utf8", $var))
> ?print $var
> --
>
> ?I get proper output (no unsightly question-marks):
> ???????????????
>
> So, what's the deal? ?

Thanks that I have my crystal ball working. I can see clearly that the
forth
character of the input is 'HALFWIDTH KATAKANA LETTER ME' (U+FF92)
which is
not present in ISO-2022-JP as defined by RFC 1468 so python converts
it into
question mark as you requested. Meanwhile perl as usual is trying to
guess what
you want and silently converts that character into 'KATAKANA LETTER
ME' (U+30E1)
which is present in ISO-2022-JP.

> Why can't python properly encode some of these
> characters?

Because "Explicit is better than implicit". Do you care about
roundtripping?
Do you care about width of characters? What about full-width " (U
+FF02)? Python
doesn't know answers to these questions so it doesn't do anything with
your
input. You have to do it yourself. Assuming you don't care about
roundtripping
and width here is an example demonstrating how to deal with narrow
characters:

from unicodedata import normalize
iso2022_squeezing = dict((i, normalize('NFKC',unichr(i))) for i in
range(0xFF61,0xFFE0))
print repr(u'\uFF92'.translate(iso2022_squeezing))

It prints u'\u30e1'. Feel free to ask questions if something is not
clear.

Note, this is just an example, I *don't* claim it does what you want
for any character
in FF61-FFDF range. You may want to carefully review the whole unicode
block:
http://www.unicode.org/charts/PDF/UFF00.pdf

  -- Leo.



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 23:02:58 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 03:02:58 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
Message-ID: <13hdj721upearab@corp.supernews.com>

On Wed, 17 Oct 2007 21:40:40 +0000, Paul Hankin wrote:

> On Oct 17, 10:03 pm, Debajit Adhikary <debaj... at gmail.com> wrote:
>> How does "a.extend(b)" compare with "a += b" when it comes to
>> performance? Does a + b create a completely new list that it assigns
>> back to a? If so, a.extend(b) would seem to be faster. How could I
>> verify things like these?
> 
> Use a += b rather than a.extend(b): I'm not sure what I was thinking.

Neither am I. Why do you say that?


> Anyway, look at 'timeit' to see how to measure things like this, but my
> advice would be not to worry and to write the most readable code - and
> only optimise if your code's runnign too slowly.

Always good advice, but of course what a person considers "the most 
readable code" changes with their experience.

 
> To answer your question though: a += b is *not* the same as a = a + b.


It might be. It depends on what a and b are.



-- 
Steven


From Cory.Leach at gmail.com  Thu Oct 18 19:40:43 2007
From: Cory.Leach at gmail.com (Cory)
Date: Thu, 18 Oct 2007 23:40:43 -0000
Subject: Embedded Boost.Python Enum
In-Reply-To: <1192687157.036646.234790@t8g2000prg.googlegroups.com>
References: <1192687157.036646.234790@t8g2000prg.googlegroups.com>
Message-ID: <1192750843.281989.114740@v23g2000prn.googlegroups.com>

Ok, I finally got it figured out. The secret which no one told me what
that if you're doing embedding, you have to initialize your modules!

BOOST_PYTHON_MODULE(Enums){ ... } defines the function initEnums()
which must be called before you can import the module. Finally figured
it out by looking here: http://members.gamedev.net/sicrane/articles/EmbeddingPythonPart1.html

It's odd to me that little tidbit got left out of the boost.python
tutorial page on embedding... I must have looked at it 100 times.


On Oct 18, 12:59 am, Cory <Cory.Le... at gmail.com> wrote:
> Hi,
>
> I have a hopefully quick question about how to use Boost.Python to
> export an Enum.
> I am embedding python in C++ and am currently exporting my classes in
> the following way:
>
> nameSpace["OBJECT"] = class_<OBJECT>("OBJECT")
>         .def("getType", &OBJECT::getType)
>         .def("setSprite", &OBJECT::setSprite);
>
> So following this, I assumed that when exporting an enum the following
> should work:
>
> nameSpace["OBJECT_TYPE"] = enum_<OBJECT_TYPE>("OBJECT_TYPE")
>                         .value("GENERIC_OBJECT",GENERIC_OBJECT)
>                         .value("MAP_OBJECT",MAP_OBJECT)
>                         .value("TOTAL_OBJECT_TYPES",TOTAL_OBJECT_TYPES)
>                         .export_values();
>
> while the above compiles, it causes the following run time exception:
>
> AttributeError: 'NoneType' object has no attribute 'OBJECT_TYPE'
>
> I took a look at the documentation and the only explanation I found
> for enum appeared to be for extending python with modules. using the
> following form:
>
> BOOST_PYTHON_MODULE(enums)
> {
>     enum_<color>("color")
>         .value("red", red)
>         .value("green", green)
>         .export_values()
>         .value("blue", blue)
>         ;
>
> }
>
> I COULD do the above, I would prefer the first method if possible. I
> however do not know how to import the module if it is statically
> linked because doing a simple import does not work and I am not
> familiar enough with the boost.python library, Python C API, or Python
> itself to know how to set it up. So My question is this:
>
> How can I either make the first method of adding an enum work and not
> throw the exception, OR once I create the BOOST_PYTHON_MODULE in an
> embedded python c++ program how to I then import that module into my
> embedded python?
>
> Thanks in advance for any help
>
> -Cory




From david at boddie.org.uk  Fri Oct 12 18:58:18 2007
From: david at boddie.org.uk (David Boddie)
Date: Sat, 13 Oct 2007 00:58:18 +0200
Subject: Cross-platform GUI development
Message-ID: <200710130058.19461.david@boddie.org.uk>

On Fri Oct 12 12:30:13 CEST 2007, Nick Craig-Wood wrote:

> I'd recommend wxPython over those becase
> 
> 1) native look and feel on all platforms
> 2) doesn't require expensive licensing for non-commercial apps (QT)

"Expensive" licensing is not required if you use the GNU General Public
License (version 2) for your software, or a license that falls under the
Trolltech GPL Exception:

  http://doc.trolltech.com/4.3/gpl.html

> 3) Isn't a pain to install on windows (GTK)
>
> That said, times change and 1-3 may have changed since I last looked
> at it!

Yes, times have changed.

(Other people in this thread have addressed points 1 and 3.)

David



From dsears at gmail.com  Wed Oct 10 13:32:11 2007
From: dsears at gmail.com (Drew)
Date: Wed, 10 Oct 2007 17:32:11 -0000
Subject: FastCGI on Windows: socket.fromfd() support?
Message-ID: <1192037531.441258.247770@g4g2000hsf.googlegroups.com>

Microsoft's IIS server recently added native support for FastCGI. The
big roadblock to Python support seems to be that socket.fromfd()
doesn't work on Windows.

Are there any plans to add this or similar functionality to the
Windows build?

Thanks,
Drew



From garrickp at gmail.com  Wed Oct 17 13:26:08 2007
From: garrickp at gmail.com (Falcolas)
Date: Wed, 17 Oct 2007 10:26:08 -0700
Subject: HTML Parser for Jython
In-Reply-To: <mailman.128.1192636258.13605.python-list@python.org>
References: <1192634455.095171.187570@i13g2000prf.googlegroups.com>
	<47162C0D.8010800@web.de>
	<mailman.128.1192636258.13605.python-list@python.org>
Message-ID: <1192641968.093358.5250@i38g2000prf.googlegroups.com>

On Oct 17, 9:50 am, Carsten Haese <cars... at uniqsys.com> wrote:
> Recent releases of BeautifulSoup need Python 2.3+, so they won't work on
> current Jython, but BeatifulSoup 1.x will work.

Thank you.



From martin at marcher.name  Wed Oct 24 17:41:08 2007
From: martin at marcher.name (Martin Marcher)
Date: Wed, 24 Oct 2007 23:41:08 +0200
Subject: New to Vim and Vim-Python
In-Reply-To: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
References: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
Message-ID: <5fa6c12e0710241441g4bf6b6bbr65c67798e6cfd0ea@mail.gmail.com>

Hello,

2007/10/24, Daniel Folkes <danfolkes at gmail.com>:
> I am new to using Vim's scripts.
> I was wondering if anyone uses Vim-Python and how to use it?   This
> includes things like key bindings and such.

are you talking about

* how to use vim?
 * http://www.vi-improved.org/tutorial.php
* how to create vim scripts?
 * sorry can't help (but vim.sf.net has a couple of scripts you might
want to look at)
* how to use vim to create python scripts?
 1. http://www.vi-improved.org/tutorial.php
 2. http://docs.python.org/tut/tut.html

Personally I just left vim in favor of emacs - there's just a lot more
available that is ready to use vim emacs than with vim (in my case,
your use case may vary)

hth
martin


-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From ben at benfinney.id.au  Sun Oct 28 21:56:11 2007
From: ben at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 12:56:11 +1100
Subject: PEP 299 and unit testing
Message-ID: <871wbehef8.fsf@benfinney.id.au>

Howdy all,

PEP 299 <URL:http://www.python.org/dev/peps/pep-0299> details an
enhancement for entry points to Python programs: a module attribute
(named '__main__') that will be automatically called if the module is
run as a program.

The PEP has status "Rejected", citing backward-compatibility issues,
and Guido's pronouncement that "It's not worth the change (in docs,
user habits, etc.) and there's nothing particularly broken."

I don't deny the backward-compatibility issues in the cited
discussion, but I'd like to point out one thing that is broken by
this: unit testing of program modules.


Unit tests need to import a module and introspectively test small
units from the module to verify their behaviour in isolation. The
boundary of a unit test is the code that's actually in the module
under test: any functional code in that module needs to be tested by
the module's unit test, any code not in that module is outside the
scope of that unit test module.

The logical extension of this is to put *all* functional code into
discrete units, including the "main line" code that gets executed when
the module is run as a program. This leads to code of the type
discussed in PEP 299:

    def main(argv):
        """ Do the main stuff of this program """
        parse_commandline(argv)
        try:
            do_interesting_things()
        except SystemExit, e:
            exitcode = e.code
        return exitcode

    if __name__ == "__main__":
        import sys
        exitcode = main(sys.argv)
        sys.exit(exitcode)

This allows the module's 'main' function to be called as a discrete
unit from the unit test module; the unit test passes in 'argv' as
desired, and fakes out other units that aren't being tested.

What it doesn't allow is for the testing of the 'if __name__ ==
"__main__":' clause itself. No matter how simple we make that, it's
still functional code that can contain errors, be they obvious or
subtle; yet it's code that *can't* be touched by the unit test (by
design, it doesn't execute when the module is imported), leading to
errors that won't be caught as early or easily as they might.

So, I'd argue that "nothing particularly broken" isn't true: unit
testing is flawed in this scenario. It means that even the simple
metric of statement-level test coverage can't ever get to 100%, which
is a problem since it defeats a simple goal of "get all functional
code covered by unit tests".


On the other hand, if PEP 299 *were* implemented (and the
backward-compatibility issues solved), the above could be written as:

    def __main__(argv):
        """ Do the main stuff of this program """
        parse_commandline(argv)
        try:
            do_interesting_things()
        except SystemExit, e:
            exitcode = e.code
        return exitcode

with no module-level 'if __name__' test at all, and therefore no
functional code unreachable by the unit test module. The effect of the
program is the same, but the invocation of the '__main__' function
isn't left to be implemented in every single program, separately and
subject to error in every case. Instead, it becomes part of the
*external* environment of the module, and is trivially outside the
scope of a unit test module for that program.

-- 
 \          "What I have to do is see, at any rate, that I do not lend |
  `\   myself to the wrong which I condemn."  -- Henry Thoreau, _Civil |
_o__)                                                    Disobedience_ |
Ben Finney


From lucian.cancescu at gmail.com  Wed Oct 31 17:06:36 2007
From: lucian.cancescu at gmail.com (elf)
Date: Wed, 31 Oct 2007 21:06:36 -0000
Subject: 3 number and dot..
In-Reply-To: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <1193864796.839929.216040@50g2000hsm.googlegroups.com>

On Oct 31, 9:58 pm, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
>
> How can i do?

If you want do define your own function this will work, no matter how
long the number is, or what separator you choose:

def conv(s, sep='.'):
    start=len(s)%3
    last=start
    result=s[0:start]
    for i in range(start+1,len(s)):
        if (i-start)%3==0:
            if last==0:
                result+=s[last:i]
            else:
                result+=sep+(s[last:i])
            last=i

    if last==len(s) or last==0:
        result+=s[last:len(s)]
    else:
        result+=sep+s[last:len(s)]
    return result

print conv('1234567890000000')
print conv('1')
print conv('123')
print conv('1234')

>>>
1.234.567.890.000.000
1
123
1.234



From orest.kozyar at gmail.com  Wed Oct 31 22:43:03 2007
From: orest.kozyar at gmail.com (Orest Kozyar)
Date: Wed, 31 Oct 2007 19:43:03 -0700
Subject: XML document causes pickle to go into infinite recursion
Message-ID: <1193884983.837420.67460@o3g2000hsb.googlegroups.com>

I'm working on a CGI script that pulls XML data from a public database
(Medline) and caches this data using shelveleto minimize load on the
database.  In general, the script works quite well, but keeps crashing
every time I try to pickle a particular XML document.  Below is a
script that illustrates the problem, followed by the stack trace that
is generated (thanks to Kent Johnson who helped me refine the
script).  I'd appreciate any advice for solving this particular
problem.  Someone on Python-Tutor suggested that the XML document has
a circular reference, but I'm not sure exactly what this means, or why
the document would have a reference to itself.

import urllib
from pickle import Pickler
from cStringIO import StringIO
from xml.dom import minidom

baseurl = 'http://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?'

params = {
         'db':       'pubmed',
         'retmode':  'xml',
         'rettype':  'medline',
         }

badkey = '16842422'

params['id'] = badkey
url = baseurl + urllib.urlencode(params) doc =
minidom.parseString(urllib.urlopen(url).read())
print 'Successfully retrieved and parsed XML document with ID %s' %
badkey

f = StringIO()
p = Pickler(f, 0)
p.dump(doc)

#Will fail on the above line
print 'Successfully shelved XML document with ID %s' % badkey

Here is the top of the stack trace:
   File "BadShelve.py", line 35, in <module>
     p.dump(doc)
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 224, in dump
     self.save(obj)
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 286, in save
     f(self, obj) # Call unbound method with explicit self
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 725, in save_inst
     save(stuff)
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 286, in save
     f(self, obj) # Call unbound method with explicit self
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 649, in save_dict
     self._batch_setitems(obj.iteritems())
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 663, in _batch_setitems
     save(v)
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 286, in save
     f(self, obj) # Call unbound method with explicit self
   File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
pickle.py",
line 725, in save_inst
     save(stuff)



From vmaslov at swsoft.com  Tue Oct  2 03:38:47 2007
From: vmaslov at swsoft.com (Vyacheslav Maslov)
Date: Tue, 02 Oct 2007 14:38:47 +0700
Subject: reliable unit test logging
In-Reply-To: <871wcfx83l.fsf@benfinney.id.au>
References: <mailman.1331.1191237975.2658.python-list@python.org>
	<871wcfx83l.fsf@benfinney.id.au>
Message-ID: <4701F587.2060503@swsoft.com>

Ben Finney wrote:
> Vyacheslav Maslov <vmaslov at swsoft.com> writes:
> 
>> I have many many many python unit test, which are used for testing
>> some remote web service.
> 
> Part of your confusion comes from the fact that "test a remote
> service" isn't what a unit test does.
> 
> A unit test is one that executes a very *limited* part of the code: it
> tests a code unit, not the whole system, and makes a simple set of
> assertions about the result. If there are accesses to remote services
> over the network, that's far beyond the scope of a unit test.
> 
> I don't doubt that you may be using the Python standard library module
> 'unittest' to perform these tests. But they're not unit tests; they're
> integration tests, or system tests, or performance tests, or something
> else.
> 
>> Can someone explain my why so simple feature like logging of
>> timestamps during test execution was not implemented in any
>> extension?
> 
> Probably because the most important thing to know for the purpose of a
> unit test is whether the yes/no assertions were violated. Knowing when
> the tests start and finish isn't interesting. If start and finish
> times *are* interesting for your tests, you're *not* doing unit
> testing, but some other form of testing like performance tests.
I understand your opinion, you are right, i use unit tests for some 
other kind of work. But anyway it works and produce good results for 
project.

> Untested code, that should give you enough to try it out yourself:
Thanks i will look into this.



From lbolognini at gmail.com  Wed Oct 31 13:49:50 2007
From: lbolognini at gmail.com (lbolognini at gmail.com)
Date: Wed, 31 Oct 2007 17:49:50 -0000
Subject: Metaclass vs Class factory
In-Reply-To: <4727a65f$0$19672$426a74cc@news.free.fr>
References: <1193779700.135285.239400@22g2000hsm.googlegroups.com>
	<4727a65f$0$19672$426a74cc@news.free.fr>
Message-ID: <1193852990.740027.244700@d55g2000hsg.googlegroups.com>

On Oct 30, 10:46 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:

> The same as the difference between a class and a function that returns
> an instance.

Thanks Bruno.

Lorenzo



From arnodel at googlemail.com  Thu Oct 18 13:51:58 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Thu, 18 Oct 2007 10:51:58 -0700
Subject: Noob questions about Python
In-Reply-To: <1192663840.916445.207420@k35g2000prh.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192659838.773066.160060@i38g2000prf.googlegroups.com>
	<1192663840.916445.207420@k35g2000prh.googlegroups.com>
Message-ID: <1192729918.586875.187520@e34g2000pro.googlegroups.com>

On Oct 18, 7:06 am, Ixiaus <parnel... at comcast.net> wrote:
[...]
> I know '<<' is shifting x over by n bits; but could you point me to
> some literature that would explain why it is the same as "x*2**n"?

I haven't got literature but I've got a (hopefully straightforward)
explanation:

In binary 2 is 10.  When you multiply by 10, you shift all your digits
left by 1 place.
When you multiply by 10**n (which is 1 followed by n zeroes), you
shift all your digits left by n places.

HTH

--
Arnaud




From steve at holdenweb.com  Wed Oct  3 12:05:11 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 12:05:11 -0400
Subject: gdbm objects not iterable?
In-Reply-To: <4703BAD4.6020409@shopzeus.com>
References: <47039B0B.7080301@shopzeus.com> <fe07ph$6a0$1@sea.gmane.org>
	<4703A9CE.3030608@shopzeus.com> <4703ACCF.3000301@holdenweb.com>
	<4703BAD4.6020409@shopzeus.com>
Message-ID: <4703BDB7.5080005@holdenweb.com>

[back on-list]
Laszlo Nagy wrote:
> 
>> Ir probably would be helpful to add the method, but it might be tricky 
>> to trap changes to the mapping as iteration proceeded: what kind of 
>> isolation would you implement?
> Probably I would do the same that Python does with dicts:
> 
>  >>> d = {1:'a',2:'b',2:'c'}
>  >>> for k in d:
> ...     if d.has_key(k+1):
> ...             del d[k+1]
> ...     print k
> ...
> 1
> Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
> RuntimeError: dictionary changed size during iteration
> 
>  >>> d = {1:'a',2:'b',2:'c'}
>  >>> for k in d:
> ...     del d[k+1]
> ...     d[k+100] = 'XXX'
> Traceback (most recent call last):
>  File "<stdin>", line 2, in <module>
> KeyError: 102
> 
> E.g. I would not allow to change the keys of the gdbm object during 
> iteration. I'm not sure how to detect "end of iteration" though.
> 
> (Maybe I misunderstood your question.)
> 
All I meant was that it's essential to trap this condition.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct  1 16:21:59 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 22:21:59 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <t5XLi.109$kd4.32@newsfe12.lga>
References: <1182093200.598418.218620@e9g2000prf.googlegroups.com>
	<1182272495.990807.99110@a26g2000pre.googlegroups.com>
	<87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga>
	<1191170325.947900.177850@50g2000hsm.googlegroups.com>
	<t5XLi.109$kd4.32@newsfe12.lga>
Message-ID: <47015723$0$9500$426a74cc@news.free.fr>

Ken Tilton a ?crit :
> 
> 
> Matthias Benkard wrote:
> 
>>> So this has nothing to
>>> do with freedom in /any/ sense of the word, it has to do with a
>>> political agenda opposed to the idea of private property.
>>
>> Freedom is inherently political, you know.  You're condemning the FSF
>> for being political, although the FSF's stated purpose is a political
>> one. 
> 
> Oh, I missed that. I just saw something about software should be shared 
> and programmers should be content with an hourly wage, not sales.
> 
Nothing forces you to use GPL code, isn't it ? If that code was under a 
proprietary licence, you would not use it without paying the price, 
because then you'd be *stealing* code ? And since you have a deep 
respect for intellectual property, copyright laws etc, you would not, by 
any mean, *steal* code by not respecting the licence terms ? Do we agree 
on this ? Yes ? Fine. Then how dare you complain about the fact that the 
GPL don't let you steal code ? Don't you feel something like a 
contradiction here ? Too bad that you can't have your cake and eat it too...



From chlo.prog at gmail.com  Wed Oct 17 16:41:10 2007
From: chlo.prog at gmail.com (rc)
Date: Wed, 17 Oct 2007 13:41:10 -0700
Subject: pymssql - insert NULL to int
In-Reply-To: <5nmqaoFioriqU1@mid.uni-berlin.de>
References: <1192636146.759372.33660@v29g2000prd.googlegroups.com>
	<5nmqaoFioriqU1@mid.uni-berlin.de>
Message-ID: <1192653670.787922.270360@t8g2000prg.googlegroups.com>

On Oct 17, 11:07 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> rc wrote:
> > How to insert NULL values in to int field using params.
>
> > I'm trying to use pymssql.execute, passing the operation and list of
> > params.  One of the values in the params is a NULL value going to int
> > field.  The pymssql._quote() puts ' around the NULL which causes an
> > exception to be thrown, is there a way to use the params for this or
> > do I need to build the insert string myself?
>
> > pymssql.DatabaseError: internal error: SQL Server message 245,
> > severity 16, state 1, line 1:
> > Conversion failed when converting the varchar value 'NULL' to data
> > type int.
> > DB-Lib error message 10007, severity 5:
> > General SQL Server error: Check messages from the SQL Server.
>
> Can you show us the actual code you use? I doubt that such a basic thing
> isn't working.
>
> You are aware that you have to pass None, not "NULL"?
>
> Diez

I had tried None and was getting the same error as 'NULL', however, I
tried again after your post and its working now.  Not sure what I
changed but thanks for getting me to tried it again.

rc



From Caseyweb at gmail.com  Thu Oct  4 17:42:55 2007
From: Caseyweb at gmail.com (Casey)
Date: Thu, 04 Oct 2007 21:42:55 -0000
Subject: Is there a nicer way to do this?
In-Reply-To: <87ejgawpug.fsf@keizer.soze.com>
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <1191534175.791249.314280@w3g2000hsg.googlegroups.com>

Not sure if this is really better or even more pythonic, but if you
like one-liners that exercise the language:

attributeNames = dict( [("AttributeName.%d" % (n+1), attribute) for
n,attribute in enumerate(attributes)] )

What this does is create a list (using a list comprehension and the
enumerate function) of ("AttributeName.x", attribute) tuples which is
then be used to initialize a dictionary.



From python.list at tim.thechases.com  Wed Oct 17 17:32:48 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 17 Oct 2007 16:32:48 -0500
Subject: Pull Last 3 Months
In-Reply-To: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
Message-ID: <47167F80.8080208@tim.thechases.com>

> Is there a module that can pull str values for say the last 3 months?
> Something like:
> 
> print lastMonths(3)
> 
> ['Sep', 'Aug', 'Jul']

I don't think there's anything inbuilt.  It's slightly 
frustrating that timedelta doesn't accept a "months" parameter 
when it would be rather helpful (but how many days are in a 
month-delta is something that changes from month-to-month).

It's somewhat inelegant, but this works for me:

   import datetime

   def last_months(months):
     assert months > 0
     d = datetime.date.today()
     m = d.strftime('%b')
     yield m
     while months > 1:
       d -= datetime.timedelta(days=28)
       m2 = d.strftime('%b')
       if m2 <> m:
         m = m2
         months -= 1
         yield m

   print list(last_months(3))
   for month in last_months(24): print month

The alternative would likely be to do something like subtract one 
from the current month, and if it drops below 1, decrement the 
year and reset the month to 12.  Equally fuzzy:

   def lastN(months):
     assert months > 0
     d = datetime.date.today()
     for _ in xrange(months):
       yield d.strftime('%b')
       y,m = d.year, d.month
       if m > 1:
         m -= 1
       else:
         m = 12
         y -= 1
       d = datetime.date(y,m,1)

Use whichever you prefer.

-tkc







From steve at holdenweb.com  Tue Oct 16 18:03:24 2007
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 16 Oct 2007 18:03:24 -0400
Subject: negative base raised to fractional exponent
In-Reply-To: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
Message-ID: <ff3cfd$qh8$1@ger.gmane.org>

schaefer.mp at gmail.com wrote:
> Does anyone know of an approximation to raising a negative base to a
> fractional exponent? For example, (-3)^-4.11111 since this cannot be
> computed without using imaginary numbers. Any help is appreciated.
> 
A couple of questions.

1. How do you approximate a complex number in the reals? That doesn't 
make sense.

2. x ^ -4.1111 = 1 / (x ^ 4.1111), so where do complex numbers enter 
into this anyway?

3. I think you will find the complex numbers start to emerge as you 
explore fractional exponents.

This being Python, and an interactive interpreter being available, you 
can always just try it:

 >>> -3 ** -4.1111
-0.010927147607830808
 >>> -1 ** -2
-1.0
 >>> (-1+0j) ** (-2)
(1+0j)
 >>> (-1+0j) ** (0.5)
(6.123233995736766e-17+1j)
 >>> (-3 + 0j) ** (-4.1111 + 0j)
(0.010268290423601775-0.0037369461622949107j)
 >>>

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From grue at mail.ru  Sun Oct 21 03:34:43 2007
From: grue at mail.ru (Timofei Shatrov)
Date: Sun, 21 Oct 2007 07:34:43 GMT
Subject: Distributed RVS, Darcs, tech love
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
Message-ID: <471afd4c.179297746@news.readfreenews.net>

On Sat, 20 Oct 2007 14:04:06 -0700, llothar <llothar at web.de> tried to confuse
everyone with this message:

>
>> I love math. I respect Math. I'm nothing but a menial servant to
>> Mathematics.
>
>Programming and use cases are not maths. Many mathematics are
>the worst programmers i've seen because they want to solve things and
>much more often you just need heuristics. Once they are into exact
>world they loose there capability to see the factor of relevance in
>algorithms.
>
>And they almost never match the mental model that the average
>user has about a problem.

I'm, not sure that I'm getting your point, but are you trying to argue that 
_not_ knowing mathemathics makes you a better programmer? Or maybe that learning
math is useless to a programmer? This must be the most ignorant post I've seen
this week. The *best* programmers I've seen actually had mathematic education.
The programmers who don't know math are the ones who end up on DailyWTF.

-- 
|Don't believe this - you're not worthless              ,gr---------.ru
|It's us against millions and we can't take them all... |  ue     il   |
|But we can take them on!                               |     @ma      |
|                       (A Wilhelm Scream - The Rip)    |______________|


From nagle at animats.com  Mon Oct  8 18:20:54 2007
From: nagle at animats.com (John Nagle)
Date: Mon, 08 Oct 2007 22:20:54 GMT
Subject: round-trip from egg to code and back to egg
In-Reply-To: <46cca358$0$398$426a34cc@news.free.fr>
References: <1187383294.003703.193230@x35g2000prf.googlegroups.com>
	<46cca358$0$398$426a34cc@news.free.fr>
Message-ID: <a3yOi.5230$4V6.1171@newssvr14.news.prodigy.net>

Bruno Desthuilliers wrote:
> Catherine a ?crit :
>> Three possibilities come to mind -
>>
>> 1. I'm missing something simple
> 
> Probably. I'd say, something like unzip <your-egg-file>.egg !-)

    That's generally the solution to "egg" files.  They usually
do the wrong thing, and the "egg" system is still in beta.
They're really .zip files, so just unzip them and ignore the
"egg" crap.

    My experience is that every .egg file adds about a half
hour of headaches to an install, since you have to figure
out why it didn't work, or why Python is still using the
old version, or something.

				John Nagle


From anders.dahnielson at gmail.com  Sat Oct 13 07:11:34 2007
From: anders.dahnielson at gmail.com (Anders Dahnielson)
Date: Sat, 13 Oct 2007 11:11:34 -0000
Subject: Observer implementation question ('Patterns in Python')
In-Reply-To: <471059bd$0$22868$9b622d9e@news.freenet.de>
References: <1192226868.588324.253790@y27g2000pre.googlegroups.com>
	<fep1ev$k57$1@daisy.noc.ucla.edu>
	<471059bd$0$22868$9b622d9e@news.freenet.de>
Message-ID: <1192273894.828749.303250@q3g2000prf.googlegroups.com>

Thank you, James and Stargaming, for your replies!



From grante at visi.com  Fri Oct 12 15:32:08 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 19:32:08 -0000
Subject: matching a street address with regular expressions
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
	<1192195158.203063.143920@e9g2000prf.googlegroups.com>
	<1192203158.119872.305750@e34g2000pro.googlegroups.com>
	<13gvi9bat8e5laf@corp.supernews.com>
Message-ID: <13gvitojp1huie3@corp.supernews.com>

On 2007-10-12, Grant Edwards <grante at visi.com> wrote:
> On 2007-10-12, Paul McGuire <ptmcg at austin.rr.com> wrote:
>
>> If you've got an re that can handle everything from "123 Main" to
>> "221B Baker Street" to "Hollywood and Vine" to "Lot 123, Hundred of
>> Foughbarre", now THAT would be something.
>
> Don't forget street addresses like:
>
>   The Low Cowsheds

Honest, that (along with the town, county, and postal code) was
the mailing address for one of the engineering groups at a
company I used to work for.

-- 
Grant Edwards                   grante             Yow! There's enough money
                                  at               here to buy 5000 cans of
                               visi.com            Noodle-Roni!


From http  Wed Oct  3 14:16:09 2007
From: http (Paul Rubin)
Date: 03 Oct 2007 11:16:09 -0700
Subject: enumerate overflow
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
	<mailman.1448.1191418743.2658.python-list@python.org>
	<7xmyv0nn7f.fsf@ruckus.brouhaha.com>
	<1191432123.619871.226360@g4g2000hsf.googlegroups.com>
Message-ID: <7xejgcnjx2.fsf@ruckus.brouhaha.com>

Raymond Hettinger <python at rcn.com> writes:
> In Py2.6, I will mostly likely put in an automatic promotion to long
> for both enumerate() and count().  It took a while to figure-out how
> to do this without killing the performance for normal cases (ones used
> in real programs, not examples contrived to say, "omg, see what
> *could* happen").

Great, this is good to hear.  I think it's ok if the enumeration slows
down after fixnum overflow is reached.  So it's just a matter of
replacing the overflow signal with consing up a long.  The fixnum case
would be the same as it is now.  To be fancy, the count could be
stored in two C ints (or a gcc long long) so it would go up to 64 bits
but I don't think it's worth it, especially for itertools.count which
should be able to take arbitrary (i.e. larger than 64 bits) initializers.

As for real programs, well, the Y2038 bug is slowly creeping up on us.
That's when Unix timestamps overflow a signed 32-bit counter.  It's
already caused an actual system failure, in 2006:

http://worsethanfailure.com/Articles/The_Harbinger_of_the_Epoch_.aspx

Really, the whole idea of int/long unification is so we can stop
worrying about "omg, that could happen".  We want to write programs
without special consideration or "omg" about those possibilities, and
still have them keep working smoothly if that DOES happen.  Just about
all of us these days have 100's of GB's or more of disk space on our
systems, and files with over 2**32 bytes or lines are not even
slightly unreasonable.  We shouldn't have to write special generators
to deal with them, the library should instead just do the right thing.


From bluszcz at jabberpl.org  Wed Oct 17 09:34:11 2007
From: bluszcz at jabberpl.org (=?UTF-8?B?UmFmYcWC?= Zawadzki)
Date: Wed, 17 Oct 2007 15:34:11 +0200
Subject: Best Python Linux distribution
References: <mailman.120.1192625659.13605.python-list@python.org>
Message-ID: <ff53b3$j9g$2@nemesis.news.tpi.pl>

Anthony Perkins wrote:

> Hi everyone,
> 
> What is the best GNU/Linux distribution (or the most preferred) for
> developing Python applications?  Ideally I would like one with both
> Python *and* IDLE included on the install media (neither Ubuntu nor SUSE
> have IDLE on the CDs), so that I can use it on machines without a
> network connection.
> 
> Thanks,
> 
> -Anthony
> 

You can prepare your own version of ubuntu with included software like
Eclipse + pydev

-- 
bluszcz
http://glam.pl


From mensanator at aol.com  Wed Oct  3 00:53:22 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 02 Oct 2007 21:53:22 -0700
Subject: Using fractions instead of floats
In-Reply-To: <mailman.1423.1191381166.2658.python-list@python.org>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
	<1191301175.225114.283340@50g2000hsm.googlegroups.com>
	<mailman.1423.1191381166.2658.python-list@python.org>
Message-ID: <1191387202.491370.324930@57g2000hsv.googlegroups.com>

On Oct 2, 10:12?pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Tue, 02 Oct 2007 01:59:35 -0300, mensana... at aol.com  
> <mensana... at aol.com> escribi :
>
> > How does gmpy make the conversion from float to rational?
>
> Well, you know, these days valuable software usually comes with something  
> people call "documentation". Incomprehensible documents in strange formats  
> talking about esoteric stuff that nobody is able to read (as if someone  
> wanted to actually read them!).
> Hidden in the land of Mordor where the shadows lie, there is an ancient  
> scroll -a long time forgotten by mankind- where you can read terrible  
> things like this:
>
> "If an mpf or float argument is passed, the
> mpq is built from it with an 'optimal' approach based on a
> Stern-Brocot tree." <http://gmpy.googlecode.com/svn/trunk/doc/gmpydoc.txt>
>
> On the motivation for doing such evil things, you can read the explanation  
> given centuries ago by its creator, by then the High Wizard Alessandro:
>
> "[The algorithm tries] to convert floats to rationals
> giving the smallest denominator compatible with the hypothesis that
> the float is precise to N bits [...] usually DBL_MANT_BITS [...] normally  
> 53 today"
>
> <http://mail.python.org/pipermail/python-list/2002-October/166974.html>
>

The best place to hide something is in the
documentation. Which I have read often, but
that's one of the places where my eyes glaze
over.

Thanks anyway. And to Robert Kern also.

> --
> Gabriel Genellina




From gandalf at shopzeus.com  Thu Oct 11 09:42:23 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Thu, 11 Oct 2007 15:42:23 +0200
Subject: gdbm troubles.
In-Reply-To: <1192103345.052824.166450@y42g2000hsy.googlegroups.com>
References: <1192103345.052824.166450@y42g2000hsy.googlegroups.com>
Message-ID: <470E283F.2010408@shopzeus.com>

Shriphani wrote:
> dictionary = gdbm.open('dictionary','c')
> dictionary['Ellipsize'] = 'Openbox'
> dictionary.get('Ellipsize')
>   
Try this:

print dictionary['Ellipsize']
del dictionary['Ellipsize']


gdbm objects are similar to builtin dictionaries. By the way, they are 
not iterable, but they should be. I posted a proposal some days ago and 
nobody was against this. How can I start a discussion about this? Can we 
vote for this new feature here? Is this the right place?


  Laszlo



From mauro.tiz at gmail.com  Wed Oct 10 07:36:12 2007
From: mauro.tiz at gmail.com (mauro)
Date: Wed, 10 Oct 2007 04:36:12 -0700
Subject: setup.py build & SWIG: missing py files (they are outside the build
	directory)
Message-ID: <1192016172.162028.204160@22g2000hsm.googlegroups.com>

Hi all,
I am trying to make a package distribution containing some extension
module written in C. The problem is that when I run setup.py some
files are generated in the wrong position.
Suppose that this is my setup.py:

from distutils.core import setup, Extension

setup(name='foo',
	package_dir  = {"foo" : "src"},
	packages=['foo',
		'foo.spam',
		],
	ext_modules=[
		Extension("foo.spam._spam",
			sources=['src/spam/spam.i',
				'src/spam/spam.cc',
				],
			)
		]
)

Here is an example of what I get after running:

python setup.py build -cmingw32 bdist

.\
    +build\
        +lib.win32-2.4\
            +foo\
                +spam\
                    __init__.py
                    _spam.pyd
                __init__.py
                foo.py
    +src\
    +dist\
        foo-0.0.win32.zip
    setup.py
    spam.py

So the problem is that spam.py (generated by SWIG) is not in .\build
\lib.win32-2.4\foo\spam but in the same directory as setup.py!
Of course I can move it manually, but I have to update also
foo-0.0.win32.zip and all this is quite annoying...
Did I miss some option in the setup? Is it possible to run a system
command (copy) after each extension is compiled and linked and the
corresponding .py file is generated?
Thanks in advance!

Mauro



From sjmachin at lexicon.net  Tue Oct 16 04:29:23 2007
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 16 Oct 2007 01:29:23 -0700
Subject: int to str in list elements..
In-Reply-To: <5nj79gFiilfrU2@mid.uni-berlin.de>
References: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
	<1192397897.822099.286260@v29g2000prd.googlegroups.com>
	<unl8h3pj4u5dhs9176bms0iroh1bt0nkq4@4ax.com>
	<5nj79gFiilfrU2@mid.uni-berlin.de>
Message-ID: <1192523363.659595.276610@i13g2000prf.googlegroups.com>


Marc 'BlackJack' Rintsch wrote:
> On Tue, 16 Oct 2007 06:18:51 +0000, Tim Roberts wrote:
>
> > John Machin <sjmachin at lexicon.net> wrote:
> >>On Oct 15, 4:02 am, Abandoned <best... at gmail.com> wrote:
> >>> Hi..
> >>> I have a list as a=[1, 2, 3 .... ] (4 million elements)
> >>> and
> >>> b=",".join(a)
> >>> than
> >>> TypeError: sequence item 0: expected string, int found
> >>> I want to change list to  a=['1','2','3'] but i don't want to use FOR
> >>> because my list very very big.
> >>
> >>What is your worry: memory or time? The result string will be very
> >>very very big.
> >
> > It's an interesting mental exercise to try to figure out just how large
> > that string will be, without using Python.
> >
> > I get 30,888,889 bytes...
>
> I think you have an off by one error here.  (One number, not one byte)  :-)

It's certainly off :

[Best viewed in a fixed-width font ... umm, do they still sell squared
paper for doing arithmetic on? I had to rip a page out of a notebook
and rotate it through 90 degrees]
3000001 x 8 = 24000008
0900000 x 7 = 06300000
0090000 x 6 = 00540000
0009000 x 5 = 00045000
0000900 x 4 = 00003600
0000090 x 3 = 00000270
0000009 x 2 = 00000018
-------       --------
4000000       30888896
less one for a comma counted above but not used -> 30888895
difference is 6 bytes which is one number (8) LESS 2 bytes

Cheers,
John



From jeff at jmcneil.net  Thu Oct  4 13:55:39 2007
From: jeff at jmcneil.net (Jeff McNeil)
Date: Thu, 4 Oct 2007 13:55:39 -0400
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <13ga9kco185sud4@corp.supernews.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
	<47051d47$0$8036$426a74cc@news.free.fr>
	<13ga9kco185sud4@corp.supernews.com>
Message-ID: <82d28c40710041055k5ee3c254jcc87850eaf8c7d8a@mail.gmail.com>

I don't know how "clean" it is, but there are a few situations in which I do
something like this:

getattr(obj, "method", default_method)(*original_method_args)

The default_method is a base implementation or a simple error handler. For
example, when a client hits one of our XMLRPC servers and passes a method
name that's not defined, I've got a default catch-all that logs that and
handles the error accordingly.

-Jeff

On 10/4/07, Grant Edwards <grante at visi.com> wrote:
>
> On 2007-10-04, Bruno Desthuilliers <
> bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
>
> > Yes, and it's even simpler : just pass your object. If it effectively
> > implements the desired interface, everything will work fine !-)
> [...]
>
> >> What I'd like to do is create a feature detection system for
> >> my work -- specifically, a general class / interface called
> >> "Feature" and then subclasses that implement functions like
> >> isFeaturePresent() in all of their different and unique ways.
> >> I'd love to hear how I can do this in Python.
> >
> > I'm not sure about what you exactly want to do, but FWIW, checking if an
> > object has a given attribute is quite simple:
> >
> > if has_attr(obj, 'attribute_name'):
> >    print "Hurray"
> > else:
> >    print "D'oh"
> >
> > Note that in Python, methods are attributes too - only they
> > are callable.
>
> On a slight tangent....
>
> The "Pythonic" way to handle things like that is often just
> to call the method you want to call.  If the object doesn't
> have that method, then you catch the exception and do whatever
> it is you do in the case where the object doesn't have the
> feature in question.
>
> The tricky bit is only catching the AttributeError exception
> generated by the attempt to access the non-existant method, and
> not catching AttributeError exceptions generated by bugs in the
> method when it does exist.
>
> Once you've added code to make sure you only catch exceptions
> you care about, it's simpler to just call has_attr
>
> the obvious method
>
>    try:
>        myobj.feature1()
>    except AttributeError:
>        print "object doesn't implement feature1"
>
> isn't correct, since an unhandled AttributeError generated by
> the feature1 method will print "object doesn't implement
> feature1".  Attempting to isolate the attributeError we care
> about looks like this:
>
>    try:
>        m = myobj.feature1
>    except AttributeError:
>        print "object doesn't implement feature1"
>    else:
>        m()
>
> That's just too messy compared with the has_attr method that
> goes like this:
>
>    if has_attr(myobj,'feature1'):
>        myobj.feature1()
>    else:
>        print "object doesn't implement feature1"
>
> However, I don't like that alot because you've got to supply
> the method name twice: once as a string and once as the method
> name.
>
> What's the cleanest way to call a method that might not be
> there?
>
> --
> Grant Edwards                   grante             Yow! My haircut is
> totally
>                                   at               traditional!
>                                visi.com
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/3fd453f8/attachment.html>

From adam at krusty.madoff.com  Wed Oct 24 13:17:33 2007
From: adam at krusty.madoff.com (Adam Lanier)
Date: Wed, 24 Oct 2007 13:17:33 -0400
Subject: How to best send email to a low volume list?
In-Reply-To: <1193244896.747562.291580@y27g2000pre.googlegroups.com>
References: <1193244896.747562.291580@y27g2000pre.googlegroups.com>
Message-ID: <1193246253.4017.34.camel@skinner.madoff.com>

On Wed, 2007-10-24 at 16:54 +0000, chris wrote:
> I need to maintain a list of subscribers to an email list for a
> "newsletter" that will be sent via a web form probably once a month.
> I anticipate low numbers--tens to maybe one hundred subscribers at the
> most.  Just curious what the best way to code this is.  Should I just
> loop through the addresses and send one-off emails to each, or is it
> better to somehow send to every recipient in one shot?  One thing I
> would like to avoid in the latter scenario is each recipient being
> able to see the entire list of recipients.  Also don't want to trigger
> any kind of spam thing on my web host by sending out too many emails.
> 
> Anyway, any tips appreciated.
> 
> Thanks,
> Chris
> 

Before you reinvent the wheel, you should look into using a mailing list
manager, Mailman for example:

http://www.gnu.org/software/mailman/index.html

Regardless, confirmed double-opt-in should be a requirement as should a
mechanism for subscribers to unsubscribe themselves.

Using a 'list address' as the from address and using bcc addressing will
prevent your recipients from being able to see all the other recipient
addresses.



From rcdailey at gmail.com  Thu Oct  4 15:07:53 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 4 Oct 2007 14:07:53 -0500
Subject: RegEx question
In-Reply-To: <20071004170954.GA26162@sdf.lonestar.org>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
	<20071004170954.GA26162@sdf.lonestar.org>
Message-ID: <496954360710041207u7317d0f8o4e560fcf42b1a692@mail.gmail.com>

On 10/4/07, J. Clifford Dyer <jcd at sdf.lonestar.org> wrote:
>
> You *are* talking about python regular expressions, right?  There are a
> number of different dialects.  Also, there could be issues with the quoting
> method (are you using raw strings?)
>
> The more specific you can get, the more we can help you.


As far as the dialect, I can't be sure. I am unable to find documentation
for Comment Reflower and thus cannot figure out what type of regex it is
using. What exactly do you mean by your question, "are you using raw
strings?". Thanks for your response and I apologize for the lack of detail.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/c9efccf5/attachment.html>

From tonylabarbara at aol.com  Fri Oct 26 15:49:06 2007
From: tonylabarbara at aol.com (tonylabarbara at aol.com)
Date: Fri, 26 Oct 2007 15:49:06 -0400
Subject: Editing MS Word
Message-ID: <8C9E62067551A05-4A4-5ED2@FWM-M07.sysops.aol.com>


Hi;

I'm trying to edit MS Word tables with a python script. Here's a snippet:

import string

def msw2htmlTables():

input = "/usr/home/me/test.doc"

input = open(input,'r')

word = "whatever"

inputFlag = 0

splitString = []

for line in input:

# Check first the inputFlag, since we only want to delete the top

if inputFlag == 0:

splitString = line.split(word)

try:

keep = splitString[1]

except:

keep = "nada"

print len(splitString)

inputFlag = 1

elif inputFlag == 1:

# This means we've deleted the top junk. Let's search for the bottom junk.

splitString = line.split(word)

try:

keep = splitString[0]

inputFlag = 2

print len(splitString)

except:

keep += line

elif inputFlag == 2:

# This means everything else is junk.

pass

Now, if var "word" is "orange", it will never pring the length of splitString. If it's "dark", it will. The only difference is the way they appear in the document. "orange" appears with a space character to the left and some MS garbage character to the right, while "dark" appears with a space character to the left and a comma to the right. Furthermore, if I use MSW junk characters as the definition of "word" (such as " ? ", which is what I really need to search), it never even compiles (complains of an unpaired quote). It appears that python doesn't like MSW's junk characters. What shall I do?

TIA,

Tony

________________________________________________________________________
Email and AIM finally together. You've gotta check out free AOL Mail! - http://mail.aol.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071026/89bbf83d/attachment.html>

From ryan at ryankaskel.com  Wed Oct 17 08:20:06 2007
From: ryan at ryankaskel.com (ryan k)
Date: Wed, 17 Oct 2007 12:20:06 -0000
Subject: Displaying future times
Message-ID: <1192623606.048549.114600@y27g2000pre.googlegroups.com>

I have a schedule of times in the future that I want to display in a
timezone the user sets. There is a useful module
http://www.purecode.com/~tsatter/python/README.txt (at that URL) with
a function that takes seconds from the epoch and a time zone and
returns what is basically a datetime object.

My question is how to I display the seconds from the epoch for a
datetime object (which will be a datetime in the future) for the UTC
timezone?



From kar1107 at gmail.com  Wed Oct 10 15:21:16 2007
From: kar1107 at gmail.com (Karthik Gurusamy)
Date: Wed, 10 Oct 2007 19:21:16 -0000
Subject: matching a street address with regular expressions
In-Reply-To: <mailman.32.1192035770.927.python-list@python.org>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
Message-ID: <1192044076.090824.133360@o3g2000hsb.googlegroups.com>

On Oct 10, 10:02 am, "Shawn Milochik" <Sh... at Milochik.com> wrote:
> On 10/4/07, Ricardo Ar?oz <ricar... at gmail.com> wrote:
>
>
>
> > Christopher Spears wrote:
> > > One of the exercises in Core Python Programming is to
> > > create a regular expression that will match a street
> > > address.  Here is one of my attempts.
>
> > >>>> street =  "1180 Bordeaux Drive"
> > >>>> patt = "\d+ \w+"
> > >>>> import re
> > >>>> m = re.match(patt, street)
> > >>>> if m is not None: m.group()
> > > ...
> > > '1180 Bordeaux'
>
> > > Obviously, I can just create a pattern "\d+ \w+ \w+".
> > > However, the pattern would be useless if I had a
> > > street name like 3120 De la Cruz Boulevard.  Any
> > > hints?
>
> Also, that pattern can be easily modified to have any number of words
> at the end:
> patt = "\d+ (\w+){1,}"
> This would take care of 3120 De la Cruz Boulevard.

\w doesn't take care of white-space. Following will work.

patt = r"\d+ (\w+\s*){1,}"


BTW {1,} is same as +. So
patt = r"\d+ (\w+\s*)+"
will work as well.

Note that using raw-string for re pattern is safer in most uses.

Karthik



From jcd at sdf.lonestar.org  Tue Oct 23 15:27:19 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 23 Oct 2007 15:27:19 -0400
Subject: New module for method level access modifiers
In-Reply-To: <471e43ad$0$21451$426a34cc@news.free.fr>
References: <1193159299.190539.136450@z24g2000prh.googlegroups.com>
	<471e43ad$0$21451$426a34cc@news.free.fr>
Message-ID: <20071023192719.GB16978@sdf.lonestar.org>

On Tue, Oct 23, 2007 at 08:54:52PM +0200, Bruno Desthuilliers wrote regarding Re: New module for method level access modifiers:
> 
> TimeHorse a ?crit :
> > I have started work on a new module that would allow the decoration of
> > class methods to restrict access based on calling context.
> > Specifically, I have created 3 decorators named public, private and
> > protected.
> 
> Lord have mercy.
> 

I invented a new decorator too.  It gets rid of many of the limitations of python, including duck typing and hideously flat namespaces.  It's used kind of like this:

@java
def public_com.sun.lord.have.mercy():
    pass

Implementation forthcoming...


From __peter__ at web.de  Thu Oct 25 03:25:08 2007
From: __peter__ at web.de (Peter Otten)
Date: Thu, 25 Oct 2007 09:25:08 +0200
Subject: Regular Expression question
References: <1193294043.936217.54090@q5g2000prf.googlegroups.com>
	<5oasj2Fm1hl5U2@mid.uni-berlin.de>
	<1193296260.635805.260630@q3g2000prf.googlegroups.com>
Message-ID: <ffpgck$9um$02$1@news.t-online.com>

looping wrote:

> On Oct 25, 8:49 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>>
>> needle = re.compile(r'create\s+or\s+replace\s+package(\s+body)?\s+',
>>                     re.IGNORECASE)
> 
> What I want here is a RE that return ONLY the line without the "body"
> keyword.
> Your RE return both.
> I know I could use it but I want to learn how to search something that
> is NOT in the string using RE.

You want a "negative lookahead assertion" then:

>>> import re
>>> s = """Isaac Newton
... Isaac Asimov
... Isaac Singer
... """
>>> re.compile("Isaac (?!Asimov).*").findall(s)
['Isaac Newton', 'Isaac Singer']

Peter


From arkanes at gmail.com  Wed Oct  3 11:32:14 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 3 Oct 2007 10:32:14 -0500
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191370407.188678.86820@n39g2000hsh.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<1191370407.188678.86820@n39g2000hsh.googlegroups.com>
Message-ID: <4866bea60710030832g7fa77325tc1abf78c97f8026b@mail.gmail.com>

On 10/2/07, bramble <cadet.bramble at gmail.com> wrote:
> On Oct 2, 11:07 am, "Chris Mellon" <arka... at gmail.com> wrote:
> >
> > PyGtk has poor cross platform support, a very large footprint (the
> > largest of all these libraries) as well as a complicated runtime
> > environment.
>
> What's complicated about it?
>

There's an enormous amount of dependencies and runtime configuration,
such as finding theme engines and handling preferences. There's
solutions for managing all of that of course, but it's still much more
overhead than dirt-simple Tk.


From tjandacw at yahoo.com  Tue Oct  9 11:06:04 2007
From: tjandacw at yahoo.com (timw.google)
Date: Tue, 09 Oct 2007 08:06:04 -0700
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
In-Reply-To: <mailman.1650.1191778964.2658.python-list@python.org>
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
	<mailman.1650.1191778964.2658.python-list@python.org>
Message-ID: <1191942364.320569.85830@o80g2000hse.googlegroups.com>

On Oct 7, 1:01 pm, Michael Torrie <torr... at chem.byu.edu> wrote:
> timw.google wrote:
> > Hi
>
> > I want to write a python script that runs rsync on a given directory
> > and host. I build the command line string, but when I try to run
> > subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
> > os.system(cmd), I get prompted for my login password. I expected this,
> > but when I try to give my password, it's echoed back to the terminal
> > and the special characters in the password is (I think) getting
> > interpreted by the shell (zsh)
>
> > I can't ssh w/o supplying a password. That's the way the security is
> > set up here.
>
> > How do I use python to do this, or do I just have to write a zsh
> > script?
>
> You need to use the pexpect module.
>
>
>
> > Thanks.

Thanks to all the suggestions on getting this to work w/ python. I'll
look into this more when I get the chance. I don't have root access,
so setting up some kind of server is out. I may not be able to try the
other suggestions either, as they have things locked down pretty tight
around here.



From ajcppmod at gmail.com  Sat Oct  6 08:05:36 2007
From: ajcppmod at gmail.com (ajcppmod at gmail.com)
Date: Sat, 06 Oct 2007 12:05:36 -0000
Subject: slice with negative stride
Message-ID: <1191672336.230508.50600@o3g2000hsb.googlegroups.com>

I'm really confused about results of slices with negative strides. For
example

>>mystr = 'my string'

I would have then thought of the contents of mystr as:

indices    0 1 2 3 4 5 6 7 8
content    m y   s t r i n g

with mystr[:3] = 'my '

Can someone explain to me how mystr[:3:-1] = 'gnirt'?

I was expecting the result to be mystr[:3] reversed (' ym') i.e slice
then reverse or even the first 3 elements of the string after being
reversed ('gni') i.e. reverse then slice.

Thanks

Andy



From ldo at geek-central.gen.new_zealand  Thu Oct  4 00:51:36 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 17:51:36 +1300
Subject: Mysqldb printing sql and params ... NEVER MIND
References: <mailman.1406.1191354307.2658.python-list@python.org>
Message-ID: <fe1rgo$o5m$6@lust.ihug.co.nz>

In message <mailman.1406.1191354307.2658.python-list at python.org>, Sells,
Fred wrote:

> el stupido here "accidently" put a couple of print statements into a
> mysqldb module when eclipse opened it from the link in the stacktrace;

Dimdows, right?


From jcd at sdf.lonestar.org  Tue Oct 23 09:41:22 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 23 Oct 2007 09:41:22 -0400
Subject: How can i protect text format ?
In-Reply-To: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
References: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
Message-ID: <20071023134122.GA10523@sdf.lonestar.org>

On Tue, Oct 23, 2007 at 06:30:18AM -0700, Abandoned wrote regarding How can i protect text format ?:
> 
> Hi..
> I want to do a forum with python but i have a problem..
> 
> I have a <textarea> and i write:
> line 1 hi
> line 2 how r u
> 
> And then i save to this database ( colomn data type is text)
> And than it looks "line 1 hi line 2 how r u"..
> How can i protect \n characters ?
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list

Are you sure they're getting lost on the way into the DB?  Could they be getting lost on the way out?  Say... into an HTML page?

You need to pinpoint your problem more clearly to get a helpful response.

Cheers,
Cliff


From python.list at tim.thechases.com  Mon Oct 29 12:02:24 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 29 Oct 2007 11:02:24 -0500
Subject: simple try/except question
In-Reply-To: <xfnVi.9506$aJ3.5968@trnddc02>
References: <xfnVi.9506$aJ3.5968@trnddc02>
Message-ID: <47260410.6050606@tim.thechases.com>

> Is the behavior below expected?
> If so, why is the exception not caught?
> Thanks,
> Alan Isaac
> 
>>>> x,y='',''
>>>> try: x/y
> ... except TypeError: print 'oops'
> ...
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> TypeError: unsupported operand type(s) for /: 'str' and 'str'

A typo in your code?  It works for me(tm)...

Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit 
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more 
information.
 >>> x,y = '',''
 >>> try: x/y
... except TypeError: print 'oops'
...
oops

-tkc





From grante at visi.com  Fri Oct 12 17:49:31 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 21:49:31 -0000
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
	<feoni6$h74$02$1@news.t-online.com>
Message-ID: <13gvqvb6shueveb@corp.supernews.com>

On 2007-10-12, Florian Lindner <Florian.Lindner at xgm.de> wrote:

> I was just asking for the correct syntax of the mail address. I know about
> the various problems actually impossibility to test for a live and valid
> address.

Don't forget to allow uucp style "bang" addresses.  :)

-- 
Grant Edwards                   grante             Yow! I had a lease on an
                                  at               OEDIPUS COMPLEX back in
                               visi.com            '81 ...


From exarkun at divmod.com  Wed Oct 31 10:59:13 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 31 Oct 2007 09:59:13 -0500
Subject: Python bug tracker now secret?
In-Reply-To: <472896CD.3060201@animats.com>
Message-ID: <20071031145913.8162.494626924.divmod.quotient.30127@ohm>

On Wed, 31 Oct 2007 07:53:01 -0700, John Nagle <nagle at animats.com> wrote:
>I'm now getting messages like this from the Python bug tracker on
>SourceForge:
>
>  Artifact: This Artifact Has Been Made Private. Only Group Members Can
>  View  Private ArtifactTypes.
>
>I'm being denied access to bug reports I submitted, such as
>
>https://sourceforge.net/tracker/?func=detail&aid=1651995&group_id=5470&atid=105470
>
>This is only happening for Python bugs; bugs in non-Python areas are still
>accessable.  So it's not a general SourceForge bug.
>
>Is this a dumb policy change or a dumb administrator action?
>

I don't know why they chose to make the sf tracker private.  Maybe that
was the only way to remove write access.  Python bugs are now tracked
at http://bugs.python.org/.

Jean-Paul


From yinxianglong at gmail.com  Mon Oct 22 06:47:49 2007
From: yinxianglong at gmail.com (=?GB2312?B?0vzP6cH6?=)
Date: Mon, 22 Oct 2007 18:47:49 +0800
Subject: how to get the clsid of Internet Explorer_Server?
Message-ID: <977252d80710220347v313790afpf84991c8b612f659@mail.gmail.com>

Thanks for any help
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/291f3112/attachment.html>

From mensanator at aol.com  Mon Oct  8 16:13:24 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 13:13:24 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.1678.1191866649.2658.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
Message-ID: <1191874404.292250.87130@y42g2000hsy.googlegroups.com>

On Oct 8, 1:03 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com wrote:
> > For example, Windows has seperate listings for
>
> > Central America
> > Central Time (US & Canada)
> > Guadalahara, Mexico City, Monterry - New
> > Guadalahara, Mexico City, Monterry - Old
> > Saskatchewan
>
> > but they are all GMT-6
>
> But they could have different rules for Daylight Saving Time.

Which only matters if you're setting your clock.

>
> --
> Carsten Haesehttp://informixdb.sourceforge.net




From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sun Oct  7 14:26:53 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 07 Oct 2007 20:26:53 +0200
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <5msmndFer92nU1@mid.individual.net>

Licheng Fang wrote:

> struct nameval {
>     char * name;
>    int val;
> } a;
> 
> a.name = ...
> a.val = ...
> 
> becomes cryptic
> 
> a[0] = ...
> a[1] = ...

?!

(1)
a = {}
a["name"] = ...
a["val"] = ...

(2)
NAME = 0
VAL = 1
a=[]
a[NAME] = ...
a[VAL] = ...

> Python Tutorial says an empty class can be used to do this. But if
> namespaces are implemented as dicts, wouldn't it incur much
> overhead if one defines empty classes as such for some very
> frequently used data structures of the program?

Measure first, optimize later. How many million of instances and/or
accesses per second do you have?

Regards,


Bj?rn

-- 
BOFH excuse #20:

divide-by-zero error



From danfolkes at gmail.com  Tue Oct 16 10:03:48 2007
From: danfolkes at gmail.com (danfolkes)
Date: Tue, 16 Oct 2007 14:03:48 -0000
Subject: Script to get the current Woot.com Product.
Message-ID: <1192543428.283507.287290@q5g2000prf.googlegroups.com>

Hey, I just decided to check out urllib.  This script gets the
Woot.com product of the day and prints it.


from urllib import urlopen
docu = urlopen("http://www.woot.com").read( )
woot =  docu[docu.find("<h3")+46:docu.find("</h3>")]
print woot

-----
Daniel Folkes
http://danfolkes.com
danfolkes at gmail.com



From mail at microcorp.co.za  Sat Oct 27 04:35:54 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 27 Oct 2007 10:35:54 +0200
Subject: transmit an array via socket
References: <20071026.225205.281.0@webmail13.vgs.untd.com>
Message-ID: <015601c81874$bf035a00$03000080@hendrik>

"Jeff Pang" <p...uno.com> wrote:


I want to transmit an array via socket from a host to another.
How to do it? thank you.

pickle it and send it and unpickle it on the other side.

See the cPickle module docs for loads and dumps.

- Hendrik



From bignose+hates-spam at benfinney.id.au  Fri Oct 26 05:19:46 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 26 Oct 2007 19:19:46 +1000
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
Message-ID: <87fxzyjkr1.fsf@benfinney.id.au>

Lennart Benschop <lennartb at xs4all.nl> writes:

> Python has had the Decimal data type for some time now.

Since version 2.4 <URL:http://www.python.org/dev/peps/pep-0327>.

> Unfortunately it is not very easy to access the Decimal data
> type. To obtain the decimal number 12.34 one has to do something
> like this:
> 
> import decimal
> x=decimal.Decimal("12.34")

Slightly nicer, if you need to create a lot of them::

    >>> from decimal import Decimal
    >>> foo = Decimal("12.34")

> Of course we can intruduce a single character function name as an
> alias for the Decimal type constructor, but even then we have to use
> both parentheses and quotes for each and every decimal constant. We
> cannot make it shorter than D("12.34")

Nor should we. A function or type name should be short but explicit,
and 'Decimal' is about as short as I'd want.

> With Python 3000

"Python 3000" is now in beta development, and is called Python version
3.0.

> major changes to the language are carried out anyway.

All of which have been decided for some time now. It's rather too late
to introduce behaviour changes and hope for them to be in Python 3.0.

> My proposal:

Feel free to file an actual proposal using the PEP process. You might
want to refer to the PEP that introduced the Decimal type for
inspiration.

-- 
 \     "How many people here have telekenetic powers? Raise my hand."  |
  `\                                                    -- Emo Philips |
_o__)                                                                  |
Ben Finney


From george.sakkis at gmail.com  Wed Oct 10 22:41:07 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 11 Oct 2007 02:41:07 -0000
Subject: Keeping track of subclasses and instances?
In-Reply-To: <fejtcg$9k1$1@news1.carnet.hr>
References: <fejpo9$vm$1@news1.carnet.hr>
	<t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>
	<fejtcg$9k1$1@news1.carnet.hr>
Message-ID: <1192070467.891430.127260@o80g2000hse.googlegroups.com>

On Oct 10, 9:19 pm, Karlo Lozovina <_kar... at mosor.net> wrote:
> Larry Bates wrote:
> > I'm not completely sure I understand the question but here goes.
> > Instances of
> > classes are classes can be stored in lists or dictionaries.  In lists you
> > reference them via their index (or iterate over them) and in dictionaries
> > you can give them a name that is used as a key.
>
> I wish if it were that simple :).
>
> Here is a longer description - I have a function that given input creates a
> custom class and returns it back. The user is free to subclass that (even
> more, he should do that), and of course he will make instances of those
> subclasses. Now, my question is how to keep track of subclasses and their
> instances, without the need for user interaction (appending them to a list,
> or adding to dictionary)?
>
> Thanks,
>
> --
> Karlo Lozovina - Mosor


I guess Larry's actual question was why do *you* need to keep track of
users' instances and subclasses and don't let them keep track on their
own if/when they need it. I realize there are legitimate use cases for
this but it's not typical. Anyway, here's something to get you
started; all a user has to do is derive (directly or indirectly) from
InstanceTracker and, if a class C defines __init__,
super(C,self).__init__() should be called explicitly:


from collections import deque
from weakref import WeakKeyDictionary

class InstanceTracker(object):
    def __init__(self):
        try: all = self.__class__.__dict__['__instances__']
        except KeyError:
            self.__class__.__instances__ = all = WeakKeyDictionary()
        all[self] = None

def iter_instances(cls):
    return iter(cls.__dict__.get('__instances__',[]))

def iter_descendant_classes(cls):
    memo = set()
    unvisited = deque(cls.__subclasses__())
    while unvisited:
        top = unvisited.popleft()
        if top not in memo:
            memo.add(top); yield top
        unvisited.extend(top.__subclasses__())

#----- example --------------------------------------
if __name__ == '__main__':

    class A(InstanceTracker): pass
    class B1(A): pass
    class B2(A): pass
    class C1(B1,B2):
        def __init__(self):
            super(C1,self).__init__()
    class C2(B1,B2): pass
    class D(C1,C2): pass

    items = [A(),B1(),B2(),C1(),C1(),D(),A(),B2()]
    print ' * Instances per class'
    for c in iter_descendant_classes(A):
        print c, list(iter_instances(c))

    print ' * Instances per class (after delete)'
    del items
    for c in iter_descendant_classes(A):
        print c, list(iter_instances(c))


HTH,
George



From python.list at tim.thechases.com  Sun Oct  7 12:47:02 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 07 Oct 2007 11:47:02 -0500
Subject: How to create a file on users XP desktop
In-Reply-To: <4708CAF4.7020206@bigfoot.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
	<4708CAF4.7020206@bigfoot.com>
Message-ID: <47090D86.5080805@tim.thechases.com>

> You are assuming the system is not localized, that won't work if you
> distribute your applications internationally. In my system it is not
> "Desktop", it is "Escritorio", and I guess it will vary with every
> locale. Does someone know a way to find out what name does the desktop
> have?

I believe you need to read the Desktop value from

"""
HKEY_CURRENT_USER\software\microsoft\windows\currentversion\explorer\shell
folders
"""

which should (in my understanding) hold the full path of the
particular folder(s) of interest at that location, including
across localizations.

-tkc








From sandip.more at gmail.com  Wed Oct 24 02:07:47 2007
From: sandip.more at gmail.com (sandipm)
Date: Tue, 23 Oct 2007 23:07:47 -0700
Subject: transforming list
In-Reply-To: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
References: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
Message-ID: <1193206067.646561.198210@v29g2000prd.googlegroups.com>

hi james,
  this is one implementation using python dictionaries.

report ={}
for row in data:
    if not row[0] in report:
        report[row[0]] = [row[0], row[1], 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0]
    if row[2]:
        report[row[0]][row[2]+1] = row[3]
reports = report.values()



regards,
Sandip More



james_027 wrote:
> hi,
>
> i have a list from a resultset like this
> 1,"Chicago Bulls",,,""
> 2,"Cleveland Caveliers",,,""
> 4,"Detroit Pistons",1,"23686386.35"
> 4,"Detroit Pistons",2,"21773898.07"
> 4,"Detroit Pistons",3,"12815215.57"
> 4,"Detroit Pistons",4,"48522347.76"
> 4,"Detroit Pistons",5,"28128425.99"
> 4,"Detroit Pistons",6,"15681603.08"
> 4,"Detroit Pistons",8,"12627725.03"
> 4,"Detroit Pistons",9,"11417.00"
> 4,"Detroit Pistons",10,"945689.22"
> 4,"Detroit Pistons",11,"818246.57"
> 4,"Detroit Pistons",12,"1154292.77"
> 5,"Phoenix Suns",1,"23211445.97"
> 5,"Phoenix Suns",3,"11268469.53"
> 5,"Phoenix Suns",4,"49913569.61"
> 5,"Phoenix Suns",5,"26035236.09"
> 5,"Phoenix Suns",7,"113953310.50"
> 5,"Phoenix Suns",8,"17091769.84"
> 5,"Phoenix Suns",10,"818569.99"
> 5,"Phoenix Suns",11,"824602.19"
> 5,"Phoenix Suns",12,"1142018.11"
>
> and I wish to transform it into something like this
>
> 1, "Chicago Bulls", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> 2, "Cleveland Caveliers", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> 4, "Detroit Pistons", 23686386.35, 21773898.07, 12815215.57,
> 48522347.76, 28128425.99, 15681603.08, 0, 12627725.03, 11417.00,
> 945689.22, 818246.57, 1154292.77
> 5, "Phoenix Suns", 23211445.97, 0, 11268469.53, 499113569.61,
> 26035236.09, 0, 113953310.50, 17091769.84, 0, 818569.99, 824602.19,
> 1142018.11
>
> currently my solution is something like this the rows is the original
> list which is list of list ... the report is a list of list with the
> new arrangement that I want.
>
>         report = []
>         report_item = None
>         temp_c_id = 0
>         for row in rows:
>             if not row[0] == temp_c_id:
>                 temp_c_id = row[0]
>                 if report_item: report.append(report_item)
>                 report_item = [row[0], row[1], 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0]
>             if row[2]:
>                 report_item[row[2]+1] = row[3]
>
> I feel this solution is not that good, can I make this more pythonic?!
>
> Thanks
> james :)



From deets at nospam.web.de  Tue Oct  9 17:32:27 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 23:32:27 +0200
Subject: pytz has so many timezones!
In-Reply-To: <1191954101.289278.216770@g4g2000hsf.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<5n1ebbFfok0sU1@mid.uni-berlin.de>
	<1191954101.289278.216770@g4g2000hsf.googlegroups.com>
Message-ID: <5n2abeFepeabU1@mid.uni-berlin.de>

>> who says that timezones have to be separated by one hour each?
> 
> The Earth says. It takes 24 hours to revolve.

Your kidding me, aren't you? Beside the fact that the earth does not 
revolve in 24h (leap seconds, if you like to google), even the 24 hours 
of a day are as arbitrary as you prefer. I'm writing this at 23:26, but 
I bet quite a few people call that 11:26PM. So - who's right?


>> Why aren't they separated by 30minutes, or 20, or 10? Or 2 hours?
> 
> Why isn't an hour defined to be 30 minutes?
> 
>> Or why don't we have a global time?
> 
> Like UTC?

Which I'm sure is the time you have on your wristwatch?


> Not the same way at all. The 25 timezones I speak of are
> not merely an abstraction, but related to longitude.

Again: BS. Deciding that the the actual noon (the time the sun is at 
it's highest point) is the 12:00 on my clock was defined by someone. 
It's sensible, but arbitrary. As is the decision about the width of such 
a timezone.

>> as are the 400 apparently in use by people all over the world
> 
> Where the correlation to longitude is much looser.
> Granted, it doesn't need to be for non-navigational
> purposes. And although governments can legislate things
> like DST, they can't legislate longitude.

They can. The greniwch meridian is nothing but a convention.


>> - and last time I checked, there was no
>> fundamental law in physics or such that limited the allowed or sensible
>> number of timezones...
> 
> Isn't there some law somewhere that says the circumference
> of a sphere is 360deg? Doesn't that same law mean that no two
> points on a sphere can be seperated by more than 180deg
> longitude? Doesn't that make GMT+13 non-sensible?


Others have given you reasons why it _is_ sensible to have GMT+13.

Diez


From korthrun at omfg.lulz.net  Mon Oct 29 17:52:12 2007
From: korthrun at omfg.lulz.net (Korthrun)
Date: Mon, 29 Oct 2007 16:52:12 -0500
Subject: statvfs
Message-ID: <QpOdncfQo4mRy7vanZ2dnUVZ_s-pnZ2d@giganews.com>

I'm writing some scripts to populate RRD's, mainly for practicing python.

As such I've decided to play with statvfs in order to build disk
graphs. Here is what I have and what I get. What I'm curious about
here is the meaning of the "L" charcter, as that fubars math.

###start code###

from os import statvfs, path
from statvfs import *

mps = [ '/', '/home', '/www', '/var', '/storage/backups',
'/storage/snd' ]

for fs in mps:
	data = statvfs(fs)
	print data

###end code, start output###
(4096, 4096, 4883593L, 4045793L, 4045793L, 0L, 0L, 0L, 1024, 255)
(4096, 4096, 1220889L, 1114718L, 1114718L, 0L, 0L, 0L, 0, 255)
(4096, 4096, 19267346L, 18273138L, 18273138L, 0L, 0L, 0L, 0, 255)
(4096, 4096, 3662687L, 3492397L, 3492397L, 0L, 0L, 0L, 0, 255)
(4096, 4096, 3417702L, 2116063L, 2116063L, 0L, 0L, 0L, 0, 255)
(4096, 4096, 25885944L, 21799115L, 21799115L, 0L, 0L, 0L, 0, 255)
###end output###

Ideally I'll just do some blocksize * number of blocks math to get
the % of used space. I know I could just .strip() the L, but I'd
to know what it means

Thanks,

Korth


From dedalusenator at gmail.com  Wed Oct 17 14:48:08 2007
From: dedalusenator at gmail.com (dedalusenator at gmail.com)
Date: Wed, 17 Oct 2007 11:48:08 -0700
Subject: Need help in updating a global variable by a thread
Message-ID: <1192646888.230515.223140@k35g2000prh.googlegroups.com>

Hello Folks,

My first posting here and I am a stuck in figuring out the exact way
to update a global variable from within a function that doesnt return
any value (because the function is a target of the thread and I dont
know how exactly return would work in such a case). I am sure I am
missing something very fundamental here. The essential pieces of my
code that cause the problem would be something like this:
---------------------------------------------
lookuptab = {'1.9.7.3':'Bangkok','1.9.60.3':'Sydney'}

results = {}

for val in lookuptab.values():
    results[val]=0

def testt(loc):
       global results
       results[loc] = 1
       return results[loc]

for x in lookuptab.values():
      thread = threading.Thread(target=testt,args=(x))
      thread.start()
print results
-------------------------------------------------------

results contain 0 instead of 1. Any help clearing my block is greatly
appreciated.

-Stephen



From mail at timgolden.me.uk  Mon Oct  8 11:11:25 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Mon, 08 Oct 2007 16:11:25 +0100
Subject: How to create a file on users XP desktop
In-Reply-To: <1191854927.113225.67880@o80g2000hse.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>	<1191735169.441525.106060@o80g2000hse.googlegroups.com>	<4708CAF4.7020206@bigfoot.com>
	<47090D86.5080805@tim.thechases.com>	<mailman.1648.1191778298.2658.python-list@python.org>	<1191853183.871616.227350@k79g2000hse.googlegroups.com>
	<1191854927.113225.67880@o80g2000hse.googlegroups.com>
Message-ID: <470A489D.5020507@timgolden.me.uk>

kyosohma at gmail.com wrote:
> On Oct 8, 9:19 am, goldtech <goldt... at worldpost.com> wrote:
>>> from win32com.shell import shell, shellcon
>>> desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
>>> </code>
>> Tim,
>>
>> How did you learn Win32com?
>>
>> Other than the O'Reilly book, I've never found a lot of
>> documentation.
>>
>> Trying to browse COM in PythonWin is tough - there's tons of stuff in
>> there. I've never been able to find the Win32com classes, methods,
>> usage examples when I browse COM in PythonWin.
>>
>> For example where is, shell.SHGetFolderPath and shellcon.CSIDL_DESKTOP
>> officially documented?
>>
>> Did you learn from using Visual C++ or VB? How did you learn this
>> stuff?
>>
>> Thanks,
>> Lee G.
> 
> Pretty much the only place to learn stuff that's not in the PyWin32
> docs is on one of the MSDN sites. Yes, that can suck. Here's the
> general page: http://msdn2.microsoft.com/en-us/default.aspx
> 
> You can google for them too to get direct links to the MSDN page.
> 
> The ActiveState Python (AKA ActivePython) has an IDE that allows you
> to browse the COM module. It also has a help file that allows you to
> browse the PyWin32 docs locally. I think you can download that without
> downloading ActivePython.
> 
> Mike

FWIW, the pywin32 distribution itself also comes with a local
.chm file. But aside from that, there have been several abortive
attempts -- including by Mike & myself! -- to get some kind of
online help going for pywin32, but nothing's really gained traction,
and we've all got more interesting things to be doing...

One point to bear in mind that, more or less, the pywin32 stuff
just wraps the MS API really closely, mostly doing just enough
of the messy plumbing to present the API "objects" as Python
objects. That's to say: find out how to do it from a C++ or VB
or Delphi tutorial and translating into Python often isn't hard.

As it happens I've been using Windows APIs for a few years,
so I have a bit of a head start. But I've answered quite
a few questions on python-win32 by putting the subject line
into Google, picking a likely-looking response and translating
it into Python.

In this case ("How to create a file on users XP desktop") the
question was too broad and tended to throw up user-oriented
answers. I tried a few permutations, including limiting the
search to msdn.microsoft.com, none of which showed much on the
first couple of pages. A search of the pywin32.chm files does
point in the right direction, but the fact is that the shell
functionality exposed by Windows which does this kind of
stuff is non-intuitive.

While I think everyone agrees that the Windows side of Python
could benefit from more and better docs, the general answer to:
How do I do X in Python under Windows? is: How do I X under Windows?

TJG


From byte8bits at gmail.com  Fri Oct 12 10:26:43 2007
From: byte8bits at gmail.com (brad)
Date: Fri, 12 Oct 2007 10:26:43 -0400
Subject: Memory Problems in Windows 2003 Server
In-Reply-To: <470f7857$0$27795$426a74cc@news.free.fr>
References: <470f7857$0$27795$426a74cc@news.free.fr>
Message-ID: <feo079$jd1$1@solaris.cc.vt.edu>

amdescombes wrote:
> Hi,
> 
> I am using Python 2.5.1
> I have an application that reads a file and generates a key in a 
> dictionary for each line it reads. I have managed to read a 1GB file and 
> generate more than 8 million keys on an Windows XP machine with only 1GB 
> of memory and all works as expected. When I use the same program on a 
> Windows 2003 Server with 2GB of RAM I start getting MemoryError exceptions!
> I have tried setting the IMAGE_FILE_LARGE_ADDRESS_AWARE on both 
> Python.exe and Python25.dll and setting the /3GB flag on the boot.ini 
> file to no avail. I still get the MemoryError exceptions.
> 
> Has anybody encountered this problem before?
> 
> Thanks in advance for any ideas/suggestions.
> 
> Best Regards,
> 
> Andr? M. Descombes

How are you reading the large files? IMO, large files are better read in 
chunks:

target_file = open(f, 'rb')
while 1:
     data = target_file.read(8192000)
     if data:
         DO SOMETHING
     else:
         break

The above reads 8MB at a time until the file has been completely read. 
Change the 8MB to whatever you like.


From python at rcn.com  Wed Oct 17 03:16:36 2007
From: python at rcn.com (Raymond Hettinger)
Date: Wed, 17 Oct 2007 00:16:36 -0700
Subject: Last iteration?
In-Reply-To: <1192603763.894935.39680@e34g2000pro.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
Message-ID: <1192605396.249377.217430@i38g2000prf.googlegroups.com>

>     def lastdetecter(iterable):
>         "fast iterator algebra"
>         lookahead, t = tee(iterable)
>         lookahead.next()
>         t = iter(t)
>         return chain(izip(repeat(False), imap(itemgetter(1),
> izip(lookahead, t))), izip(repeat(True),t))

More straight-forward version:

def lastdetecter(iterable):
    t, lookahead = tee(iterable)
    lookahead.next()
    return izip(chain(imap(itemgetter(0), izip(repeat(False),
lookahead)), repeat(True)), t)


Raymond



From martin at v.loewis.de  Wed Oct 31 11:42:48 2007
From: martin at v.loewis.de (=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 31 Oct 2007 16:42:48 +0100
Subject: Python bug tracker now secret?
In-Reply-To: <mailman.687.1193842761.13605.python-list@python.org>
References: <mailman.687.1193842761.13605.python-list@python.org>
Message-ID: <4728A278.9080804@v.loewis.de>

> I don't know why they chose to make the sf tracker private.  Maybe that
> was the only way to remove write access. 

That, plus removing it means that people won't browse outdated information.

Regards,
Martin


From j.d.walker at comcast.net  Tue Oct 23 03:14:51 2007
From: j.d.walker at comcast.net (j.d.walker)
Date: Tue, 23 Oct 2007 07:14:51 -0000
Subject: Microsoft drops appeal of European antitrust case
In-Reply-To: <1193113532.771258.106610@e34g2000pro.googlegroups.com>
References: <1193113532.771258.106610@e34g2000pro.googlegroups.com>
Message-ID: <1193123691.543789.207030@v29g2000prd.googlegroups.com>

On Oct 22, 9:25 pm, therm... at india.com wrote:
> Microsoft drops appeal of European antitrust case
> template_bas
> template_bas
> The software giant, which faces a $1 billion fine, will make some of
> its Windows operating system code available so developers can better
> design products for it.
> By Jim Puzzanghera, Los Angeles Times Staff Writer
> 11:43 AM PDT, October 22, 2007
> WASHINGTON -- Microsoft Corp. will drop its appeal of a long-running
> and costly European antitrust case and make some of its highly guarded
> software code available at low prices so developers can better design
> products that work with the Windows operating system, European
> officials said today.
>
> The decision came after Europe's second-highest court last month
> rejected Microsoft's appeal of a 2004 antitrust decision that had led
> to a record $703-million fine for abuse of its dominance in computer
> operating systems. On top of that fine, the European Commission in
> 2005 started levying a daily noncompliance fine against Microsoft that
> has brought the total to more than $1 billion.
>
> Running out of legal options, Microsoft agreed to abide by the 2004
> decision, ending a case that began in 1998, said Neelie Kroes,
> European Commissioner for Competition Policy.
>
> "Now that Microsoft has agreed to comply with the 2004 decision, the
> company can no longer use the market power it derived from its 95%
> share of the PC operating system market and 80% profit margin to harm
> consumers by killing competition on any market it wishes," she said in
> a written statement.
>
> Kroes said she had been in "almost daily contact" with Microsoft Chief
> Executive Steve Ballmer over the last two or three weeks in an attempt
> to resolve the case.
>
> Microsoft agreed to drop its appeal and provide information to
> software developers to allow their products to work with Windows.
> Microsoft had agreed to provide the information before but at costs
> that European officials said were "wholly unreasonable," Kroes said.
>
> Microsoft said in a statement that it would "continue to work closely
> with the commission and the industry to ensure a flourishing and
> competitive environment for information technology in Europe and
> around the world."
>
> The Redmond, Wash., company will lower its fee for a worldwide license
> to use its software code, from 5.95% of the requesting company's
> revenue to just 0.4%. Microsoft also dropped its demand for a royalty
> of 2.98% of the money made from software developed using Microsoft's
> protocols. Now, companies will have to pay only a one-time fee of
> 10,000 euros, or about $14,161.
>
> Microsoft also will make its code available to open-source developers,
> such as those that design applications for the Linux operating system,
> under terms that allow other users of the software to copy and modify
> it.
>
> "Microsoft's obligation to document its protocols is an ongoing one --
> the documentation needs to be maintained as products evolve and new
> issues may arise once it is being used by developers," Kroes said.
> "But as of today, the major issues concerning compliance have been
> resolved."
>
> Microsoft officials declined to comment.
>
> jim.puzzangh... at latimes.com




From raims at dot.com  Mon Oct  8 15:00:58 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Mon, 8 Oct 2007 21:00:58 +0200
Subject: Cross platform way of finding number of processors on a machine?
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<1i5k9kn.kxih581ipiy0sN%raims@dot.com>
	<mailman.1654.1191803233.2658.python-list@python.org>
Message-ID: <1i5omno.1absin21z0pncoN%raims@dot.com>

Nicholas Bastin <nick.bastin at gmail.com> wrote:
> This is really bad on linux.  You really want to parse /proc/cpuinfo
> because HT 'cpus' are almost useless, and can be bad in situations
> where you try to treat them as general purpose cpus.

I'm not the author of the library. I think you should address these bug
reports elsewhere...

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From kwmsmith at gmail.com  Thu Oct  4 13:41:23 2007
From: kwmsmith at gmail.com (Kurt Smith)
Date: Thu, 4 Oct 2007 12:41:23 -0500
Subject: What does the syntax [::-1] really mean?
In-Reply-To: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
Message-ID: <c266a7930710041041h3071bf90j558c338f3d270773@mail.gmail.com>

On 10/4/07, Casey <Caseyweb at gmail.com> wrote:
[snippage]
>
> Following the reference to section 3.2 provides a (non-rigorous)
> description of what a slice object is, in terms of the extended
> slicing semantics.  But it doesn't shed any additional light on the
> meaning of [::-1].
>
> >From this, I would expect that x[::-1] would be identical to x[n:0:-1]
> (n and 0 being the "end" values, with the order switched due to the
> negative step value).  But the clause that "(but never including j)"
> means that x[n:0:-1] excludes the 1st element of x, x[0].  A quick
> test in ipython confirms that "abc"[3:0:-1] => "cb", not "cba".
> Changing the "end" value  to x[n:-1:-1] results in an empty string.

Check it out:

>>> 'abc'[3:None:-1]
'cba'
>>>

The second argument to the slice object, if negative, will convert
this index to (len(x)+j), which is why 'abc'[3:-1:-1] == 'abc'[2:2:-1]
== ''.  If you pass in None for the 1st or second index, the slice
object will compute the right bounds based on the __len__ of the
object, and do the right thing.  When there is no value specified,
None is assumed.


>
> So my question is: "what exactly is [::-1] shorthand for"?  Or is it a
> special case, in which case why isn't it  defined as such in the
> library?

obj[::-1] == obj[None:None:-1] == obj[slice(None,None,-1)]

>>> 'abc'[::-1]
'cba'
>>> 'abc'[None:None:-1]
'cba'
>>> 'abc'[slice(None,None,-1)]
'cba'

Taking a look at the slice class:

 |  indices(...)
 |      S.indices(len) -> (start, stop, stride)
 |
 |      Assuming a sequence of length len, calculate the start and stop
 |      indices, and the stride length of the extended slice described by
 |      S. Out of bounds indices are clipped in a manner consistent with the
 |      handling of normal slices.

Kurt


From jelleferinga at gmail.com  Wed Oct 31 12:17:23 2007
From: jelleferinga at gmail.com (jelle feringa)
Date: Wed, 31 Oct 2007 17:17:23 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <4728A586.3050300@tim.thechases.com>
References: <loom.20071031T132748-928@post.gmane.org>
	<47289BA8.5000109@tim.thechases.com>
	<37fac3b90710310831xbabb2ddl7d12b87675edc6d9@mail.gmail.com>
	<4728A586.3050300@tim.thechases.com>
Message-ID: <37fac3b90710310917k5c1d248cg199d525585b34782@mail.gmail.com>

Thanks for your in-depth explanation Tim.
Which is impossible to disagree with!


On 10/31/07, Tim Chase <python.list at tim.thechases.com> wrote:
>
> > Well, I this is another idiom in itself, right?
> > Your checking if something is part of an iterable.
> > I'm checking truth before entering a conditional expression.
>
> I'm not sure I follow.  I simply replaced your
>
>   if check.find('something')
>
> with
>
>   if 'something' in check:
>
> which (1) is more readable (2) is more pythonic (especially as I
> understand that find() is going away), and (3) works like I
> understand you want from your description.
>
> For strings, they're the same behavior.  However, it also works
> for testing membership in other container classes (sets, lists,
> tuples, dicts, etc).
>
> Your original code's behavior would be analog to
>
>   if not check.startswith('something')
>
> which is not at all what I think you meant.  This
> misinterpretation alone is reason enough to give the find()
> method the boot.
>
> > The latter is considered to be pythonic, right?
>
> Clarity is pythonic.  The find() call returns an offset, or -1 if
> not found (because the beginning-of-string is offset=0).  It
> would also make sense if this returned None instead of -1.
> Either way, find() should be used for returning index values.  If
> you're testing for the presence of a substring, use the
>
>   if 'something' in check:
>
> to do the test.  And as for the start/end parameters to find,
> they are interpreted as slice endpoints, so
>
>   if check.find('something', start) != -1:
>
> would be the same as
>
>   if 'something' in check[start:]:
>
> and
>
>   if check.find('something', start, end) != -1:
>
> would be the same as
>
>   if 'something' in check[start:end]:
>
> both of which are far more readable than their find() variants.
>
> Hope this helps clarify,
>
> -tkc
>
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/fc7977c3/attachment.html>

From steve at holdenweb.com  Sun Oct  7 08:16:07 2007
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 07 Oct 2007 08:16:07 -0400
Subject: Newbie packages Q
In-Reply-To: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
Message-ID: <feaim4$47k$1@sea.gmane.org>

MarkyMarc wrote:
> Hi All,
> 
> I do not understand the packages system in python. I have read this
> http://docs.python.org/tut/node8.html a 100 times and I can not get it
> to work.
> 
> I make a test app like this:
> *******************************
> Test/
>       __init__.py (a empty file)
>       apack/
>                __init__.py (a empty file)
>                atest.py
>       bpack/
>                __init__.py (a empty file)
>                btest.py
> *******************************
> atest.py:
> from Test.bpack import btest
> 
> def printA():
> 	print "This is Atest from Apack"
> 
> def printbtest():
> 	print btest.printB()
> 
> print printA()
> print printbtest()
> *******************************
> btest.py:
> from Test.apack import atest
> 
> def printB():
> 	print "This is Btest from Bpack"
> 
> def printatest():
> 	print atest.printA()
> 
> print printatest()
> *******************************
> 
> All I get is an import error: ImportError: cannot import name x
> 
> I can remove the import statements an use the Test package quit normal
> but when I try to make intra-pacage references I get the import error.
> 
> I must be missing something, could any one point me at what.
> 
> Thank you.
> 
Would it hep to observe that the atest and btest submodules attemot to 
import each other?

There is no reason I can see for apack and bpack to be subpackages. Why 
not just rename atest.py as apack.py at the same level as the Test 
package's __init__.py, and in the same way make btest.py bpack.py.

Then the __init__.py can do:

from apack import printA
from bpack import printB

and your main program can do

import Test
Test.printA(...)

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From llothar at web.de  Sun Oct 21 11:42:29 2007
From: llothar at web.de (llothar)
Date: Sun, 21 Oct 2007 08:42:29 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <471b6714$0$90276$14726298@news.sunsite.dk>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
Message-ID: <1192981349.181197.308610@q5g2000prf.googlegroups.com>

>
> Depends obvious a bot on what you consider serious math.
>
> Expression evaluation, floating point characteristics, relational
> database theory, simulation, optimum location, encryption etc.
> are all based on mathematics of different levels.

Thats not i call serious maths. You just need a very little
understanding
here for all this concepts. A "extended high school degress" should be
well
enough (based on our education system in Germany - don't know how much
math
you do in a US high schoool). A little bit set theory and of course
boolean
algebra (on a very low level but unfortunately not teached in school).

But where do you need the way to prove mathematical theorems and this
is what
i call as serious math. You don't need to prove anything you just need
to
use it. (In 95% of all programming, except some embedded programming
with
DSP's or numeric.)

> > Depends. I would call Knuth as one of the worst programmers. Look at
> > his total
> > failures on literature programming. Software Engineering is something
> > very
> > different.
>
> I think you will find it very difficult to write a piece of code
> that are not heavily influenced by Knuth.

Well programming in the small like sort algorithms for sure. But not
for his great discoveries but for one of the first man who was paid
for this by this university employee.

But in the field of software enginering as i said before he
completely
failed. And for me programming is just another word for software
engineering these days.




From kaaveland at gmail.com  Wed Oct 10 14:43:28 2007
From: kaaveland at gmail.com (=?iso-8859-1?q?Robin_K=E5veland?=)
Date: Wed, 10 Oct 2007 18:43:28 -0000
Subject: Plugins / Modularity
In-Reply-To: <1192041527.105596.305280@o80g2000hse.googlegroups.com>
References: <1192041012.099313.282600@d55g2000hsg.googlegroups.com>
	<1192041527.105596.305280@o80g2000hse.googlegroups.com>
Message-ID: <1192041808.055507.167810@57g2000hsv.googlegroups.com>

On Oct 10, 8:38 pm, "danmcle... at yahoo.com" <danmcle... at yahoo.com>
wrote:
> On Oct 10, 12:30 pm, Robin K?veland <kaavel... at gmail.com> wrote:
>
>
>
> > Hi there. I'm basically in the process of writing my first substantial
> > application in Python, and I've made a couple of (I'd like to say)
> > design decisions so it won't just be a jumble. So, I've divided my
> > program into three sub-packages, core, plugins and utilities.
>
> > The core will be needed for the program to be run, but I've put it in
> > a package by itself to make things more tidy.
> > The utilities will be things that are handy to have (I'm thinking
> > packages written by others that will make my work easier), but aren't
> > necessary for the program to run. I'm not sure if this is needed yet,
> > but I want to have the option in case it turns out to be useful.
>
> > The plugins will basically be a package with modules adding
> > functionality to the program, so to make it more extensible, and let
> > others have a very simple way of extending the functionality without
> > having to read a lot of source code and documentation. Adding a plugin
> > should be really simple, preferrably you shouldn't have to modify any
> > existing source, just put a .py file into the directory. This is where
> > I'm sort of stuck. Does anyone know a way I can achieve this?
>
> > This poses a couple of challenges for me, given the structure of my
> > project and that I have no clue about how to do it. I'm thinking here
> > that every plugin will have a main callable, which will recieve a
> > Request object which can be queried for information, and an Action
> > object which can be used to affect the state of the program to some
> > degree. These will ideally be very simple (And for the moment, they
> > obviously are).
>
> > What I want, is a moment to 'contact' every module in the plugins
> > package, and send these two objects to it's main callable. I also want
> > to add a way for the program to load and reload plugin modules on the
> > fly, so I can modify them without having to shut it down.
>
> > Does anyone have some links for me? Alternatively any ideas?
>
> > Thanks in advance.
>
> I've just completed the initial launch basically this kind of software
> framework. They way I did it was to parse xml files and load modules
> and classes dynamically. After instantiating the classes, I call a
> certain method that I expect to be present so that each class can
> register any functionality it provides with a central registry within
> the system. Overall, I've been very pleased with the way it turned
> out. It's very easy to add functionality to the system, you simply add
> an xml file along with some Python modules and you don't need to
> change any existing code. I can provide some examples for you if you
> like. Here's a little snippet from a Python script that loads modules
> and classes:
>
> def loadModule(moduleName):
>     """
>     Loads modules from within nested packages
>     Reload ensures Python code is re-compiled.
>     """
>     mod        = __import__(moduleName)
>     components = moduleName.split('.')
>
>     for component in components[1:]:
>         mod = getattr(mod, component)
>         mod = reload(mod)
>
>     return mod
>
> def loadClass(moduleName, className):
>     """
>     Load a class from a module.
>     Note: This does not create a class instance, it only loads the
> code.
>     """
>     module = loadModule(moduleName = moduleName)
>     c      = getattr(module, className)
>
>     return c
>
> You can try this out by passing in a string with with module and/or
> class path and see that the module and/or class. Note that loadClass
> does not create a class instance, so you'll have to instantiate it if
> you want to, like this:
>
> o = loadClass(modulePath,className)() #instantiates class that was
> loaded dynamically

Ah, fantastic! I didn't know about __import__, this is basically
exactly what I need. I think I will manage, thanks a lot!



From ldo at geek-central.gen.new_zealand  Thu Oct  4 04:19:47 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 21:19:47 +1300
Subject: python autoconf macro for building ming extension
References: <mailman.1473.1191434921.2658.python-list@python.org>
Message-ID: <fe27n4$11m$1@lust.ihug.co.nz>

In message <mailman.1473.1191434921.2658.python-list at python.org>, Daniel
Nogradi wrote:

> It might be slightly off topic here but couldn't find a more suitable
> place for this question:
> 
> I'm trying to build the python binding for ming -- http://ming.sf.net
> -- but for some reason the python macro for autoconf -- python.m4 --
> doesn't seem to detect my python installation correctly. The strange
> thing is that it seemingly detects everything correctly, but a final
> check still fails. I have the python 2.5 source distribution installed
> to /usr/local the standard location.
> 
> Configuring ming fails with:
> 
> checking for python... /usr/local/bin/python
> checking for python2.5... (cached) /usr/local/bin/python
> checking for a version of Python >= '2.1.0'... yes
> checking for the distutils Python package... yes
> checking for Python include path... -I/usr/local/include/python2.5
> checking for Python library path... -L/usr/local/lib/python2.5 -lpython2.5
> checking for Python site-packages path...
> /usr/local/lib/python2.5/site-packages checking python extra libraries...
> -lpthread -ldl -lutil checking python extra linking flags... -Xlinker
> -export-dynamic
> checking consistency of all components of python development
> environment... no

It's saying the components are not consistent. Perhaps the includes are not
consistent with the libraries or the Python executable. Have you managed to
build Python bindings for anything else?


From steve at holdenweb.com  Thu Oct  4 06:25:46 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 06:25:46 -0400
Subject: module confusion
In-Reply-To: <fe2dl2$4i7$3@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>
	<13g9ch1fi5c7se5@corp.supernews.com> <fe2dl2$4i7$3@lust.ihug.co.nz>
Message-ID: <fe2f35$bn1$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <13g9ch1fi5c7se5 at corp.supernews.com>, Steven D'Aprano wrote:
> 
>> ... pedants ...
> 
> When people use that word against me, it's generally a sign they're trying
> not to admit I'm right.

If it were less important to be right and more important to be 
considerate this thread could end without a further contribution from 
you ...

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From manasd at gmail.com  Mon Oct  1 12:08:07 2007
From: manasd at gmail.com (MD)
Date: Mon, 01 Oct 2007 09:08:07 -0700
Subject: Setting value of Python variable in a Python C extension
Message-ID: <1191254887.206973.115960@r29g2000hsg.googlegroups.com>

Hi,
   I have a function developed in C that is being used as a Python
extension. The function is being passed a variable from the Python
program. Is it possible to change the value of this variable from
within the C function?

Thanks,
-MD



From dstromberglists at gmail.com  Thu Oct 11 13:36:06 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Thu, 11 Oct 2007 10:36:06 -0700
Subject: "".join(string_generator()) fails to be magic
References: <20071011062604.GW19691@waste.org>
Message-ID: <pan.2007.10.11.17.36.05.57886@gmail.com>

On Thu, 11 Oct 2007 01:26:04 -0500, Matt Mackal wrote:

> I have an application that occassionally is called upon to process
> strings that are a substantial portion of the size of memory. For
> various reasons, the resultant strings must fit completely in RAM.
> Occassionally, I need to join some large strings to build some even
> larger strings.
> 
> Unfortunately, there's no good way of doing this without using 2x the
> amount of memory as the result. You can get most of the way there with
> things like cStringIO or mmap objects, but when you want to actually
> get the result as a Python string, you run into the copy again.
> 
> Thus, it would be nice if there was a way to join the output of a
> string generator so that I didn't need to keep the partial strings in
> memory. <subject> would be the obvious way to do this, but it of
> course converts the generator output to a list first.
> 
> -- 
>  "Love the dolphins," she advised him. "Write by W.A.S.T.E.."

Some options you might evaluate (I'm -not- guaranteeing all of these'll
work "as advertised"):

1) Add some swap space to your machine and use standard python strings

2) Use mmap.  I may be wrong, and I know you mentioned mmap, but I suspect
that mmap won't use up VM equal to the size of an mmap'd file; I suspect
it just caches portions of the data in physical memory when it's
convenient to do so with the primary copy of the data residing on disk in
a file

3) Use ctypes, and stay in ctypes - don't convert them to python str's. 
Of course, then you're basically writing a C program using the python
intrepreter

4) Use temporary files via the usual file API

5) If you can live with alpha code, you might try the python 3 alpha and
use the mutable "bytes" type, and stay in the "bytes" type - don't convert
it to a str




From grante at visi.com  Wed Oct 17 15:47:14 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 17 Oct 2007 19:47:14 -0000
Subject: Noob questions about Python
References: <1192649872.335816.194250@e34g2000pro.googlegroups.com>
Message-ID: <13hcpm2s9667e89@corp.supernews.com>

On 2007-10-17, Ixiaus <parnell.s at comcast.net> wrote:

> val = 'string'
> li = list(val)
> print li.reverse()
>
> returns nothing, but,
>
> val = 'string'
> li = list(val)
> li.reverse()
> print li
>
> returns what I want. Why does Python do that?

Because it does. :)

> Also I have been playing around with Binary math and noticed that
> Python treats:
>
> val = 00110
>
> as the integer 72 instead of returning 00110, why does Python do that?

In order to be "compatible" with the C language integer literal
convensions, integer litereals staring with a '0' are base-8,
so 00110 is

                  0 * 8^0         0
     +           1  * 8^1         8
     +          1   * 8^2        64
     +         0    * 8^3         0
     +        0     * 8^4         0
                               ----
                                 72                               

> (and how can I get around it?)

You can't.

-- 
Grant Edwards                   grante             Yow! Do you guys know we
                                  at               just passed thru a BLACK
                               visi.com            HOLE in space?


From siona at chiark.greenend.org.uk  Thu Oct 11 10:02:50 2007
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 11 Oct 2007 15:02:50 +0100 (BST)
Subject: "".join(string_generator()) fails to be magic
References: <mailman.71.1192084784.927.python-list@python.org>
Message-ID: <MZg*cT4Wr@news.chiark.greenend.org.uk>

Matt Mackal  <mpm at selenic.com> wrote:
>I have an application that occassionally is called upon to process
>strings that are a substantial portion of the size of memory. For
>various reasons, the resultant strings must fit completely in RAM.

Do you mean physical RAM, or addressable memory? If the former,
there's an obvious solution....

>Occassionally, I need to join some large strings to build some even
>larger strings.
>
>Unfortunately, there's no good way of doing this without using 2x the
>amount of memory as the result.

I think you can get better than 2x if you've got a reasonable number
of (ideally similarly sized) large strings with something along the
lines of:

for i in range(0, len(list_of_strings), 3): #tune step
    result_string += (list_of_strings[i] + 
                      list_of_strings[i+1] +
                      list_of_strings[i+2])
    list_of_strings[i] = ""
    list_of_strings[i+1] = ""
    list_of_strings[i+2] = ""

remembering the recent string concatenation optimisations. Beyond
that, your most reliable solution may be the (c)StringIO approach
but with a real file (see the tempfile module, if you didn't know
about it).

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
   "Frankly I have no feelings towards penguins one way or the other"
        -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From redlex at bluebottle.com  Wed Oct 24 06:45:23 2007
From: redlex at bluebottle.com (Alex Hunsley)
Date: Wed, 24 Oct 2007 11:45:23 +0100
Subject: trying to remember how to do inline code "testing"
Message-ID: <471f2243$0$514$5a6aecb4@news.aaisp.net.uk>

I can remember Python having a feature which allowed you to add some 
simple tests to your code, something like adding console output to your 
actual python script, like so:


 >>> 1+1
2
 >>> 2*7
14


... then python would actually run these queries and check that the 
expected results occurred.
I can't find the docs for this feauture anywhere, but I'm certain I 
didn't imagine this one!
Can anyone give me a reference?

thanks,
Alex


From rsachetto at gmail.com  Wed Oct 10 16:29:09 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Wed, 10 Oct 2007 17:29:09 -0300
Subject: for loop question
In-Reply-To: <1192047900.124690.284890@19g2000hsx.googlegroups.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
	<1192047900.124690.284890@19g2000hsx.googlegroups.com>
Message-ID: <250fcec00710101329h325f7162o5fe9199a81c26220@mail.gmail.com>

Very nice solution :)

On 10/10/07, Paul Hankin <paul.hankin at gmail.com> wrote:
>
> On Oct 10, 9:12 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> > > test = u"Hello World"
> >
> > > for cur,next in test:
> > >     print cur,next
> >
> > > Ideally, this would output:
> >
> > > 'H', 'e'
> > > 'e', 'l'
> > > 'l', 'l'
> > > 'l', 'o'
> > > etc...
> >
> > > Of course, the for loop above isn't valid at all. I am just giving an
> > > example of what I'm trying to accomplish. Anyone know how I can
> achieve the
> > > goal in the example above? Thanks.
> >
> > A "works-for-me":
> >
> >  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
> >  >>> for a,b in pairs:
> > ...     print a,b
>
> for a, b in zip(test, test[1:]):
>   print a, b
>
> --
> Paul Hankin
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/a0187220/attachment.html>

From bj_666 at gmx.net  Mon Oct 15 02:30:02 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 15 Oct 2007 06:30:02 GMT
Subject: Newbi Q: Recursively reverse lists but NOT strings?
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<mailman.11.1192428714.13605.python-list@python.org>
Message-ID: <5ngfnaFhiqfbU1@mid.uni-berlin.de>

On Mon, 15 Oct 2007 02:11:27 -0400, Victor B. Gonzalez wrote:

> On Sunday 14 October 2007 5:06:19 pm Dmitri O.Kondratiev wrote:
>> The function I wrote (below) reverses lists all right:
>>
>> def reverse(xs):
>>     if xs == []:
>>         return []
>>     else:
>>         return (reverse (xs[1:])) + [xs[0]]
>>
>> >>> reverse ([1,2,3])
>>
>> [3, 2, 1]
>>
>> Yet when I try to reverse a string I  get:
>> >>> reverse ("abc")
>>
>> ...
>> ...
>> ...
>>
>>   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>>
>>     return (reverse (xs[1:])) + [xs[0]]
>>
>>   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>>
>>     return (reverse (xs[1:])) + [xs[0]]
>>
>>   File "C:\wks\python-wks\reverse.py", line 2, in reverse
>>
>>     if xs == []:
>>
>> RuntimeError: maximum recursion depth exceeded in cmp
>>
>>
>>
>> What's wrong? Why recursion never stops?

Becauese you test if `xs` is an empty list which is never true when you
call the function with a string.  So it never ends.  '' != []

Ciao,
	Marc 'BlackJack' Rintsch


From gnuist006 at gmail.com  Tue Oct  9 00:38:47 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 04:38:47 -0000
Subject: why did MIT drop scheme for python in intro to computing?
In-Reply-To: <13glvegpugvbb19@corp.supernews.com>
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
	<13glvegpugvbb19@corp.supernews.com>
Message-ID: <1191904727.049274.203780@57g2000hsv.googlegroups.com>

On Oct 8, 9:04 pm, Grant Edwards <gra... at visi.com> wrote:
> On 2007-10-09, gnuist... at hotmail.com <gnuist... at hotmail.com> wrote:
>
> > Does scheme have a gui library?
>
> Yes.  It had a far, far better Tk binding than Python.
>
>  http://kaolin.unice.fr/STk/
>
> I've used both for real-world applications, and STk was _miles_
> ahead of tkinter.  It was a real, native binding to the Tk
> library rather than something stuck together with TCL.  GUI
> widgets were real Scheme objects that acted the way one
> expected them to, rather than wrapped TCL objects.
>
> However, Tk has been largely abandoned in favor of a native
> GTK+ binding
>
>  http://www.stklos.org/
>
> --
> Grant Edwards                   grante             Yow!  You should all JUMP
>                                   at               UP AND DOWN for TWO HOURS
>                                visi.com            while I decide on a NEW
>                                                    CAREER!!

Comparing apples with apples, how do you compare the scheme
gui library with wxpython ? Isnt it better than Tkinter ?



From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 28 03:45:21 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 28 Oct 2007 07:45:21 -0000
Subject: insert string problems..
References: <1193556274.869444.28560@o80g2000hse.googlegroups.com>
Message-ID: <13i8fghnud4rg65@corp.supernews.com>

On Sun, 28 Oct 2007 00:24:34 -0700, Abandoned wrote:

> Hi..
> I want to insert some data to postgresql.. My insert code:
> yer="019"
> cursor.execute("INSERT INTO ids_%s (id) VALUES (%s)", (yer, id)) I don't
> want to use % when the insert operation.
> 
> in this code give me this error:
> psycopg2.ProgrammingError: syntax error at or near "'019'" LINE 1:
> SELECT link_id from linkkeywords_'019'
> 
> if i do int(yer) , 019 change to 19 .. How can i do int yer string with
> 0 ?

Integers with a leading 0 are interpreted as base 8 (octal). You can't 
write 019, because there is no digit "9" in octal.

Why do you need a leading zero?


-- 
Steven.


From mensanator at aol.com  Mon Oct  1 20:58:07 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 01 Oct 2007 17:58:07 -0700
Subject: Using fractions instead of floats
In-Reply-To: <1191283765.496514.94080@50g2000hsm.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
	<1191272365.225974.41660@w3g2000hsg.googlegroups.com>
	<1191283765.496514.94080@50g2000hsm.googlegroups.com>
Message-ID: <1191286687.077089.103070@n39g2000hsh.googlegroups.com>

On Oct 1, 7:09 pm, andresj <andres.j.... at gmail.com> wrote:
> > > On 2007-10-01, Arnaud Delobelle <arno... at googlemail.com> wrote:
>
> > > > Finally, arithmetic would become very confusing if there were
> > > > three distinct numeric types; it already causes enough
> > > > confusion with two!
>
> Well, yeah... I get what you are saying, that would be confusing...
>
> Terry Reedy and Laurent Pointal:
> I know from __future__ import division changes the behaivour to return
> floats instead of ints, but what I meant is to be able to implement a
> function (or class/method) which would return what _I_ want/decide.
>
> Gabriel Genellina, thanks for the suggestion of wrapping my code. I
> think it could be one way... But I think it would be too much trouble,
> I'll just go with writing fractions/rationals explicitly.
>
> And thanks to mensanator and Gabriel for the suggestion of gmpy, and
> to Nick for the example (It really helps to have an example,

Would you like to see a more thorough example?

First, go check out the Wikipedia article:
<http://en.wikipedia.org/wiki/Collatz_conjecture>

And scroll down the the section "Iterating on rational numbers
with odd denominators". I added the section beginning with
"The complete cycle being:..." through "And this is because...".

Here's the Python program I used to develop that section.

import gmpy

def calc_pv_xyz(pv):
    """calculate Hailstone Function Parameters
       using Parity Vector instead of Sequence Vector
       (defined using (3n+1)/2)

    calc_pv_xyz(pv)
    pv: parity vector
    returns HailstoneFunctionParameters (x,y,z)
    """
    ONE = gmpy.mpz(1)
    TWO = gmpy.mpz(2)
    TWE = gmpy.mpz(3)
    twee = gmpy.mpz(sum(pv))
    twoo = gmpy.mpz(len(pv))
    x = TWO**twoo
    y = TWE**twee
    z = gmpy.mpz(0)
    c = gmpy.mpz(sum(pv)-1)
    for i,j in enumerate(pv):
      if j:
        z += TWE**c * TWO**i
        c -= ONE
    return (x,y,z)

def iterating_on_rational(n): # Collatz for rational numbers
  # is numerator odd?
  if n.numer() % 2 == 1:
    n = (n*3 + 1)/2
  else:
    n = n/2
  print n,
  return n

pv = [1,0,1,1,0,0,1]

for i in xrange(len(pv)+1):
  print pv
  # get Hailstone Function parameters X,Y,Z
  xyz = calc_pv_xyz(pv)
  # calculate the Crossover Point Z/(X-Y)
  cp = gmpy.mpq(xyz[2],xyz[0]-xyz[1])     # as a rational number
  # start of loop cycle
  print cp,
  # start the cycle...
  n = iterating_on_rational(cp)
  # ...which MUST return to the starting point
  # since ALL rationals are valid Crossover Points
  # not just integers
  while n != cp:
    n = iterating_on_rational(n)
  print
  print
  # step through the cyclic permutations
  p = pv.pop(0)
  pv.append(p)

##  parity vector cyclic permutations
##
##  [1, 0, 1, 1, 0, 0, 1]
##  151/47 250/47 125/47 211/47 340/47 170/47 85/47 151/47
##
##  [0, 1, 1, 0, 0, 1, 1]
##  250/47 125/47 211/47 340/47 170/47 85/47 151/47 250/47
##
##  [1, 1, 0, 0, 1, 1, 0]
##  125/47 211/47 340/47 170/47 85/47 151/47 250/47 125/47
##
##  [1, 0, 0, 1, 1, 0, 1]
##  211/47 340/47 170/47 85/47 151/47 250/47 125/47 211/47
##
##  [0, 0, 1, 1, 0, 1, 1]
##  340/47 170/47 85/47 151/47 250/47 125/47 211/47 340/47
##
##  [0, 1, 1, 0, 1, 1, 0]
##  170/47 85/47 151/47 250/47 125/47 211/47 340/47 170/47
##
##  [1, 1, 0, 1, 1, 0, 0]
##  85/47 151/47 250/47 125/47 211/47 340/47 170/47 85/47
##
##  [1, 0, 1, 1, 0, 0, 1]
##  151/47 250/47 125/47 211/47 340/47 170/47 85/47 151/47

> because
> it usually takes me hours to get to what I want in the
> documentations :). I think I will use that, when i get it working in
> Ubuntu. Do you guys know of any pre-made package or guides for getting
> it working in Ubuntu?
>
> Well, I guess my idea was not as good as I thought it was :). But
> anyways... I look forward to Python 3.0 (Specially the
> __future__.with_statement and the standardization of names-- cStringIO
> is just too ugly for my eyes!)




From gherron at islandtraining.com  Tue Oct 23 12:06:20 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Tue, 23 Oct 2007 09:06:20 -0700
Subject: Speed of Nested Functions & Lambda Expressions
In-Reply-To: <1193154050.424718.298030@i13g2000prf.googlegroups.com>
References: <1193154050.424718.298030@i13g2000prf.googlegroups.com>
Message-ID: <471E1BFC.7080101@islandtraining.com>

beginner wrote:
> Hi All,
>
> It is really convenient to use nested functions and lambda
> expressions. What I'd like to know is if Python compiles fn_inner()
> only once and change the binding of v every time fn_outer() is called
> or if Python compile and generate a new function object every time. If
> it is the latter, will there be a huge performance hit? Would someone
> give some hint about how exactly Python does this internally?
>
> def fn_outer(v):
>     a=v*2
>     def fn_inner():
>         print "V:%d,%d" % (v,a)
>
>     fn_inner()
>
> Thanks,
> Geoffrey
>
>   
The code is compiled only once when the file is initially read in.
During execution of fn_outer, v will be bound to a value, then a, then
fn_inner will be bound (to an already compiled code object) and so on.

Really, from the point of view of Python while executing fn_outer, the
def of fn_inner looks just like an assignment with fn_inner as the
variable name and a code object as the value.

Gary Herron




From kw at codebykevin.com  Sun Oct 14 12:27:09 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Sun, 14 Oct 2007 12:27:09 -0400
Subject: Python on imac
In-Reply-To: <1i5yujj.1kardau10904n1N%aleax@mac.com>
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<fes99k$o4$1@daisy.noc.ucla.edu>
	<1i5yujj.1kardau10904n1N%aleax@mac.com>
Message-ID: <4712435D.5000607@codebykevin.com>

Alex Martelli wrote:
> James Stroud <jstroud at mbi.ucla.edu> wrote:
>    ...
>> For OS X 10.4, wx has come as part of the stock python install. You may
> 
> I use Mac OSX 10.4 and this assertion seems unfounded -- I can't see any
> wx as part of the stock Python (2.3.5).  Maybe you mean something else?
> 
> 
> Alex

It's a very old version of wxPython: 2.5.3, I think. Run ls /usr/lib | 
grep wx and see what you get. Do likewise for ls /Library/Python/2.3 | 
grep wx.

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From lasses_weil at klapptsowieso.net  Sun Oct  7 10:21:54 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 16:21:54 +0200
Subject: Override 'and' and 'or'
In-Reply-To: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
Message-ID: <4708eb82$0$30379$9b4e6d93@newsspool4.arcor-online.net>

Dekker wrote:
> Is it possible to override 'and' and/or 'or'? I cannot find a special
> method for it... __and__ and __rand__ and __or__ and __ror__ are for
> binary manipulation... any proposals?
> 
> Have marvelous sunday,
> Marco
> 
I guess you're looking for __nonzero__() 
<URL:http://docs.python.org/ref/customization.html>.

You don't actually override the boolean operators, you just tell the 
object how to tell others if it evaluates to True or False 
(Truth-testing isn't a binary operation; cf. bool(my_object)).

/W


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 22:54:50 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 02:54:50 -0000
Subject: Keeping track of subclasses and instances?
References: <fejpo9$vm$1@news1.carnet.hr>
	<t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>
	<fejtcg$9k1$1@news1.carnet.hr>
Message-ID: <13gr43q77gao48a@corp.supernews.com>

On Thu, 11 Oct 2007 03:19:07 +0200, Karlo Lozovina wrote:

> Here is a longer description - I have a function that given input
> creates a custom class and returns it back. The user is free to subclass
> that (even more, he should do that), and of course he will make
> instances of those subclasses. Now, my question is how to keep track of
> subclasses and their instances, without the need for user interaction
> (appending them to a list, or adding to dictionary)?

The real question is why you think you need to keep track of them instead 
of letting the user and/or Python keep track of them, like any other 
object.


-- 
Steven.


From gneuner2/ at /comcast.net  Tue Oct  9 14:18:21 2007
From: gneuner2/ at /comcast.net (George Neuner)
Date: Tue, 09 Oct 2007 14:18:21 -0400
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <m5ang3h11oorvsrkit4q1moi6mirofbdbr@4ax.com>

On Tue, 09 Oct 2007 05:15:49 -0000, gnuist006 at gmail.com wrote:

>Again I am depressed to encounter a fundamentally new concept that I
>was all along unheard of. Its not even in paul graham's book where i
>learnt part of Lisp. Its in Marc Feeley's video.
>
>Can anyone explain:
>
>(1) its origin

Lambda calculus.  Continuation is just a formal term for "what the
code does next".  It manifests, literally, as the next instruction(s)
to be executed.


>(2) its syntax and semantics in emacs lisp, common lisp, scheme

Lisp does not have explicit continuations so there is no syntax for
them.  Continuations in Lisp mainly take the form of function calls,
function returns, exceptions, conditions, etc.  Sometimes code is
written in "continuation passing style" (CPS) in which each function
has one or more additional function parameters (the continuations) -
the function terminates by passing its result as an argument to one of
those continuation functions.

Scheme has explicit continuations based on closures.  Closure
continuations are created using CALL-WITH-CURRENT-CONTINUATION
(usually abbreviated as CALL/CC).  Some Schemes also recognize a
LET/CC form used mainly for escape continuations (exceptions).
Scheme's closure continuations can be stored in data structures and
used for complex control forms such as multitasking.  Like Lisp,
Scheme code also is sometimes written using CPS.


>(3) Is it present in python and java ?

It is present in all languages.  It generally takes the form of
procedure or function calls, returns, exceptions, etc.


>(4) Its implementation in assembly. for example in the manner that
>pointer fundamentally arises from indirect addressing and nothing new.
>So how do you juggle PC to do it.

As I stated above, every function call or return _is_ a continuation
... their implementation is obvious.

For the closure form used in Scheme, the implementation is to create a
closure, a data structure containing the function address and some
method of accessing the function's free variables, and to call the
function.  How you do this depends greatly on the instruction set.


>(5) how does it compare to and superior to a function or subroutine
>call. how does it differ.

Calling closure continuations is a little more complicated and a bit
slower than calling a normal function.  Creating the closure in the
first place may be simple or complicated depending on the complexity
of the source code and the processor's instruction set.


>Thanks a lot.
>
>(6) any good readable references that explain it lucidly ?

Get yourself a good textbook on compilers.  Most of the techniques are
applicable to all languages - even for seemingly very different
languages, the differences in their compilers are simply in how the
basic compilation techniques are combined.


My favorite intermediate-level books are 

Aho, Sethi & Ullman. "Compilers: Principles, Techniques and Tools".
2nd Ed. 2006. ISBN 0-321-48681-1.
The first edition from 1986, ISBN 0-201-10088-6, is also worth having
if you can still find it.  The 1st edition is mainly about procedural
languages, the 2nd gives more time to functional languages and modern
runtime issues like GC and virtual machines.

Cooper & Torczon, "Engineering a Compiler", 2004.  
ISBN 1-55860-698-X (hardcover), 1-55860-699-8 (paperback).
Also available as a restricted 90-day ebook from
http://rapidshare.com/files/24382311/155860698X.Morgan_20Kaufmann.Engineering_20a_20Compiler.pdf


There are also some decent intro books available online.  They don't
go into excruciating detail but they do cover the basics of code
shaping which is what you are interested in.

Torben Mogensen. "Basics of Compiler Design"
http://www.diku.dk/~torbenm/Basics/

"Engineering a Compiler".  I don't have this author's name, nor can
Google find it at the moment.  I have a copy though (~2MB) - if you
are interested, contact me by email and I'll send it to you.


Also Google for free CS books.  Many older books (including some
classics) that have gone out of print have been released
electronically for free download.

George
--
for email reply remove "/" from address


From paul.hankin at gmail.com  Mon Oct 29 19:24:44 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Mon, 29 Oct 2007 23:24:44 -0000
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <1193700284.247853.175320@z9g2000hsf.googlegroups.com>

On Oct 29, 10:57 pm, GHZ <geraint.willi... at gmail.com> wrote:
> Is this the best way to test every item in a list?
>
> def alltrue(f,l):
>     return reduce(bool.__and__,map(f,l))
>
> def onetrue(f,l):
>     return reduce(bool.__or__,map(f,l))

No. In Python 2.5 there are builtins 'all' and 'any' that do exactly
these. If you're using python <2.5, then you can support shortcut
evaluation - there's no need to check every element once you find a
false in 'all' or a true in 'any'.

--
Paul Hankin



From bj_666 at gmx.net  Wed Oct 10 13:03:04 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 10 Oct 2007 17:03:04 GMT
Subject: unpickle from URL problem
References: <vSZOi.5979$rD1.4849@trnddc01>
	<5n3ajvFfu79fU1@mid.uni-berlin.de> <C56Pi.6019$rD1.3958@trnddc01>
Message-ID: <5n4eu8Ffu79fU4@mid.uni-berlin.de>

On Wed, 10 Oct 2007 15:21:06 +0000, Alan Isaac wrote:

> Marc 'BlackJack' Rintsch wrote:
>> Pickles are *binary* files, not text files
> 
> Actually not:
> http://docs.python.org/lib/node316.html
> 
> These were created with protocol 0.

Actually yes, the docs are wrong.  It's a binary file with bytes
constraint to ASCII values.  Nevertheless it breaks if you don't open the
files in binary mode and try to use it on a platform that treats line
endings differently.

Ciao,
	Marc 'BlackJack' Rintsch


From Scott.Daniels at Acm.Org  Sat Oct 13 17:26:51 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sat, 13 Oct 2007 14:26:51 -0700
Subject: tarfile...bug?
In-Reply-To: <1192173046.202129.315210@t8g2000prg.googlegroups.com>
References: <1191933951.458411.285300@r29g2000hsg.googlegroups.com>
	<1191994404.182743.112680@50g2000hsm.googlegroups.com>
	<1192173046.202129.315210@t8g2000prg.googlegroups.com>
Message-ID: <13h2dt2l4isl5e1@corp.supernews.com>

alan.haffner at gmail.com wrote:
> On Oct 9, 10:33 pm, Anurag <anuraguni... at gmail.com> wrote:
>> Have any one faced such problem, I assume it must be common if it can
>> be replicated so easily , or something wrong with my system
>>
>> Also if I use tar.members instead of tar.getmembers() it works
>> so what is the diff. between tar.members and tar.getmembers()
> 
> if you are not fully dependant on tarfiles, have a look at the zipfile
> library in Python.  Everytime I start to use the tarfile .lib, the
> zip .lib turns out to be a better solution.

And here's why:
The tar-gzip format (sometimes .tar.gz, sometimes .tgz) is defined by
taking a fully expanded archive (tar archives), and compressing them
_as_a_whole_ with the gzip compression.  It is not possible to see the
last bytes of the .tgz file without uncompressing _all_ of the file.

The  zip format compresses the contained files individually, and keeps
a separate directory.  So it can expand only the file you want whether
it is at the beginning or the end of the zip file.  This is also (one
of) the reason(s) the .zip format gets less compression than the .tgz
format.  Each file in the zip is separately compressed, so redundancy
between files is not compressed out.

-Scott David Daniels
Scott.Daniels at Acm.Org




From schilling.klaus at web.de  Mon Oct  1 03:40:02 2007
From: schilling.klaus at web.de (Klaus Schilling)
Date: Mon, 01 Oct 2007 09:40:02 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <1182093200.598418.218620@e9g2000prf.googlegroups.com>
	<1182272495.990807.99110@a26g2000pre.googlegroups.com>
	<87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga>
	<1191170325.947900.177850@50g2000hsm.googlegroups.com>
	<t5XLi.109$kd4.32@newsfe12.lga>
Message-ID: <87zlz38fql.fsf@web.de>

Ken Tilton <kennytilton at optonline.net> writes:
>
> Oh, I missed that. I just saw something about software should be
> shared

of course it should, as otherwise it would be immoral,

> and programmers should be content with an hourly wage, not
> sales.
>

only greedy creeps wouldn't be content

Klaus Schilling


From juan at juanreyero.com  Thu Oct 18 04:39:48 2007
From: juan at juanreyero.com (Joan M. Garcia)
Date: Thu, 18 Oct 2007 10:39:48 +0200
Subject: ANN: magnitude 0.9.2
Message-ID: <m2d4vcq0iz.fsf@antares.emea.hpqcorp.net>

Following the feedback on the first release of magnitude it
has changed enough to deserve a second release, which
modifies the API, solves a couple of bugs, and brings it in
line with python's style guide.  Main changes:

* imul, idiv had wrong output unit, so that after a /= b
  printing showed wrong units. 

* mod's output has the units of the division. 

* outputPrecission, defaultFormat and outputUnits are now
  output_precision, default_format and output_units.


Magnitude:

A physical quantity is a number with a unit, like 10
km/h. Units can be any of the SI units, plus a bunch of
non-SI, bits, dollars, and any combination of them. They can
include the standard SI prefixes. Magnitude can operate with
physical quantities, parse their units, and print them. You
don't have to worry about unit consistency or conversions;
everything is handled transparently. By default output is
done in basic SI units, but you can specify any output unit,
as long as it can be reduced to the basic units of the
phisical quantity.

Home page: http://juanreyero.com/magnitude/ 

Cheers,

jm


From silfheed at gmail.com  Thu Oct  4 23:31:00 2007
From: silfheed at gmail.com (Silfheed)
Date: Fri, 05 Oct 2007 03:31:00 -0000
Subject: PYTHONPATH, opensuse10.2, gtk not working
In-Reply-To: <mailman.1551.1191551988.2658.python-list@python.org>
References: <1191536138.690185.59080@22g2000hsm.googlegroups.com>
	<mailman.1551.1191551988.2658.python-list@python.org>
Message-ID: <1191555060.248671.298340@50g2000hsm.googlegroups.com>

On Oct 4, 7:39 pm, Steve Holden <st... at holdenweb.com> wrote:
> Silfheed wrote:
> > Heyas
>
> > So I'm trying to do two things, install a little gnome taskbar applet
> > (timer-applet) that was written in python and experiment with writing
> > python gtk apps.  I've installed (through yast) gtk, gtk2, gtk2-devel,
> > python-gtk, python-gtk-devl, python-gtk-doc but I still cant get
> > python to import gtk.  I set PYTHONPATH = /usr/lib/python2.5/site-
> > packages/ and that got importing pygtk to work, but the little app I
> > downloaded wants to import gtk and I just cant figure out what I'm
> > supposed to set PYTHONPATH to in order to get `import gtk` to work.
> > Anyone know what I'm doing wrong or missing?
>
> > Thanks
>
> set PYTHONPATH to /usr/lib/python2.5/lib/site-packages:gtk-root-dir
>
> By the way, do you really think that it's necessary to put site-packages
> on the path? You might find it's already on there as Python starts up.
>
> You can tell by printing sys.path from Python.

Yes, it actually requires adding the site-packages to the PYTHONPATH
to get pygtk to work.  So far I've managed to get gtk to give a
different error when I added the site-packages/gtk-2.0/ directory (the
only gtk-like thing in the site-packages) to the PYTHONPATH
`ImportError: gobject/_gobject.so: undefined symbol:
PyUnicodeUCS4_FromObject`.   I'll have to check the path when I get
home to see what it actually has within it and work from there.

Thanks.



From vmaslov at swsoft.com  Wed Oct  3 10:37:57 2007
From: vmaslov at swsoft.com (Vyacheslav Maslov)
Date: Wed, 03 Oct 2007 21:37:57 +0700
Subject: reliable unit test logging
In-Reply-To: <87odfhsv5x.fsf@benfinney.id.au>
References: <mailman.1331.1191237975.2658.python-list@python.org>	<871wcfx83l.fsf@benfinney.id.au>	<mailman.1384.1191310742.2658.python-list@python.org>
	<87odfhsv5x.fsf@benfinney.id.au>
Message-ID: <4703A945.5000504@swsoft.com>

Ben Finney wrote:
> Vyacheslav Maslov <vmaslov at swsoft.com> writes:
> 
>> I understand your opinion
> 
> Hopefully you mean "explanation", not "opinion". I gave what appear to
> me to be facts, not opinion, about the definition of a unit test.
Yes, i meant "explanation".

I have one more question related to logging module, not unit test. I use 
FileHandler to append information to file log, in fact location of log 
file depends on some external factor and is calculated during 
initialization. Furthermore i want to use configuration file because it 
is comfortable way. So i need way to define in configuration file some 
variable which should evaluated during logging system initialization, i 
try following way:

[handler_hand02]
class=FileHandler
level=NOTSET
formatter=form01
args=(logFileDir+"myfile.log","a",)
logFileDir is defined in scope of module which call 
logging.config.fileConfig()

and it produces "name 'logFileDir' is not defined" exception. As i 
understand this happens because inside logging module variable 
logFileDir is not visible. How i can avoid this?

Thanks!



-- 


From nytrokiss at gmail.com  Sun Oct  7 03:59:50 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Sun, 7 Oct 2007 00:59:50 -0700
Subject: Top Programming Languages of 2013
In-Reply-To: <fea2hj$t2g$1@sea.gmane.org>
References: <20071007060510.5DC811E4006@bag.python.org>
	<fea2hj$t2g$1@sea.gmane.org>
Message-ID: <8a6b8e350710070059w1da168e8jbfb5c4e6cfca744c@mail.gmail.com>

What are these stats based on?

On 10/7/07, Alan Gauld <alan.gauld at btinternet.com> wrote:
>
>
> "Dick Moores" <rdm at rcblue.com> wrote
>
> > <http://www.redcanary.ca/view/top-programming>
> >
>
> Interesting, but I'm not sure what the criteria for "top" is.
> Is it a measure of power, popularity, usage?
>
> Scary that HTML/CSS should be so high though
> given its not a programming language at all!
>
> Alan G.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
http://www.goldwatches.com/mens/cufflinks.html
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/4de3e82c/attachment.html>

From goon12 at gmail.com  Wed Oct 10 14:10:16 2007
From: goon12 at gmail.com (Joe Riopel)
Date: Wed, 10 Oct 2007 14:10:16 -0400
Subject: Problem of Readability of Python
In-Reply-To: <77895c1d0710100928v5a9bd997y2e1803893ee1bb94@mail.gmail.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<77895c1d0710100928v5a9bd997y2e1803893ee1bb94@mail.gmail.com>
Message-ID: <6a2ccd190710101110g7f745833k13a5c63b53af3392@mail.gmail.com>

On 10/10/07, Kevin <wyldwolf at gmail.com> wrote:
> Am I missing something, or am I the only one who explicitly declares
> structs in python?
> For example:
> FileObject = {
>     "filename" : None,
>     "path" : None,
>     }
>
> fobj = FileObject.copy()
> fobj["filename"] = "passwd"
> fobj["path"] = "/etc/"


I am pretty new to python, but isn't that just a dictionary?


From mail at microcorp.co.za  Fri Oct 19 03:31:08 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 19 Oct 2007 09:31:08 +0200
Subject: What Data is Available With a Pickled Object Over a Socket?
References: <1192746075.952684.152760@z24g2000prh.googlegroups.com>
Message-ID: <018701c81223$9cb7b6a0$03000080@hendrik>

 "milan_sanremo" <hanco,,,ail.com>wrote:


> 
> pickledMailbag = cPickle.dump(mb, HIGHEST_PROTOCOL)
> 

If you are going to send it over a socket - is it not better to use
dumps instead of dump?

- Hendrik



From ciscotutorials2 at gmail.com  Wed Oct 10 04:02:53 2007
From: ciscotutorials2 at gmail.com (ciscotutorials2 at gmail.com)
Date: Wed, 10 Oct 2007 08:02:53 -0000
Subject: Ciscotutorials.info is your gateway to the best
Message-ID: <1192003373.265337.67930@k79g2000hse.googlegroups.com>

Ciscotutorials.info is your gateway to the best
sites on the Internet for cisco certification bootcamp!
Looking for Cisco certification tutorial, Cisco tutorial,
or Computers? Browse our recommended resources or
just try the Ciscotutorials.info search.
http://ciscotutorials.info/



From jura.grozni at gmail.com  Tue Oct  2 15:33:25 2007
From: jura.grozni at gmail.com (azrael)
Date: Tue, 02 Oct 2007 19:33:25 -0000
Subject: Creating a custom python python distribution
In-Reply-To: <47028b97$0$4524$9b4e6d93@newsspool3.arcor-online.net>
References: <1191208680.221428.11880@50g2000hsm.googlegroups.com>
	<47028b97$0$4524$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1191353605.465559.212710@n39g2000hsh.googlegroups.com>

Maybe you should check the Slax distro. Go to www.slax.org.
There is one special slax distro caled Frodo. I think that it includes
nearly nothing but the core.
There are also several packages for the distro that you can put inside
the distro and create your own distribution. There are also detailed
instructions. This way you can create a Live distro, but there are
also instruction on how to install it on the HDD.

If I understood your question then I guess that this should be the
answer.

best regards



From redtiger84 at googlemail.com  Fri Oct 12 10:59:13 2007
From: redtiger84 at googlemail.com (Christoph Krammer)
Date: Fri, 12 Oct 2007 14:59:13 -0000
Subject: Error on base64.b64decode() ?!
Message-ID: <1192201153.082875.45190@i13g2000prf.googlegroups.com>

Hello everybody,

I am using a python script to extract images from email messages. This
works fine for some messages, but not all attached images can be
decoded. I use the following code to decode the image and save it to a
database:

try:
  imagedec = base64.b64decode(imageenc)
  imagehash = md5.new(imagedec).hexdigest()
  dbcurs.execute(<save image>)
except TypeError, e:
  print "Error '%s' in Message %s" % (e, dbrow[1])
  print imageenc)

The problem is that for some images, the method b64decode() returns a
TypeError "Incorrect Padding". But if I paste the content of imageenc
to some other base64 decode (like this one:
http://www.php-einfach.de/base64_generator.php?code=1), I get the
correct result.

One example content is included below.

Is this a bug in the base64 module, or is there something wrong with
my code?

Regards,
 Christoph

---
R0lGODlhOwKDAfcAAAAAAIAAAACAAICAAAAAgIAAgACAgICAgMDAwP8AAAD/AP//AAAA//
8A/wD/
/////
wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMwAAZgAAmQAAzAAA/
wAzAAAzMwAzZgAzmQAzzAAz/wBm
AABmMwBmZgBmmQBmzABm/wCZAACZMwCZZgCZmQCZzACZ/wDMAADMMwDMZgDMmQDMzADM/
wD/AAD/
MwD/ZgD/mQD/zAD//zMAADMAMzMAZjMAmTMAzDMA/zMzADMzMzMzZjMzmTMzzDMz/
zNmADNmMzNm
ZjNmmTNmzDNm/zOZADOZMzOZZjOZmTOZzDOZ/zPMADPMMzPMZjPMmTPMzDPM/zP/ADP/
MzP/ZjP/
mTP/zDP//2YAAGYAM2YAZmYAmWYAzGYA/2YzAGYzM2YzZmYzmWYzzGYz/
2ZmAGZmM2ZmZmZmmWZm
zGZm/2aZAGaZM2aZZmaZmWaZzGaZ/2bMAGbMM2bMZmbMmWbMzGbM/2b/AGb/M2b/Zmb/
mWb/zGb/
/5kAAJkAM5kAZpkAmZkAzJkA/5kzAJkzM5kzZpkzmZkzzJkz/
5lmAJlmM5lmZplmmZlmzJlm/5mZ
AJmZM5mZZpmZmZmZzJmZ/5nMAJnMM5nMZpnMmZnMzJnM/5n/AJn/M5n/Zpn/mZn/zJn//
8wAAMwA
M8wAZswAmcwAzMwA/8wzAMwzM8wzZswzmcwzzMwz/8xmAMxmM8xmZsxmmcxmzMxm/
8yZAMyZM8yZ
ZsyZmcyZzMyZ/8zMAMzMM8zMZszMmczMzMzM/8z/AMz/M8z/Zsz/mcz/zMz///8AAP8AM/
8AZv8A
mf8AzP8A//8zAP8zM/8zZv8zmf8zzP8z//9mAP9mM/9mZv9mmf9mzP9m//+ZAP+ZM/+ZZv
+Zmf+Z
zP+Z///MAP/MM//MZv/Mmf/MzP/M////AP//M///Zv//mf//zP///
yH5BAEAABAALAAAAAA7AoMB
AAj/
ANFpwoJCCi5NKOww4cZEnCZxUqTAEedLHApfLviIs4OLGyWBvqRo0sSH40BfCjXZ8fWQmx1x
xDTREOkLFJOKKimKg
+NSEyWcFVna0QTHjgtKK6X4cskThThcvkJSYmJQHBZxLhriknJTylCIxFhy
06RUCjpcfBLCISYF1MijlIhxVIoiLFSJGL3agSOFkjhKEnFRIiuS6M6tf8+SRcdkokWUxFz8ZeJC
qYuRG4syscONJS4XbkWC
+tlQ02aRESty3CvFqiZcuNCJAyUlrB0pfJhQguMith1QE32h88WELERK
WJaqHMpNIlfD3CD6goOSIhbAL3E99bpwb9TKU0G5/5h
+fDNVXCgOonArXbcdLENV9lY5UiptYhP9
MkGBovFS2EZhtZhwQ31F0Wt8ZDWUbg/
xFVdhjXE13kEx8bGVHZSgBRETxOw2mFJwkMVRSRCpNJVX
f2kSkna+0LBSekwkuNlwGNph41Y/
RUUVCuhI0Vxf6KxEUWkUCfbTT2S9JkVWKMHRozibOQVHV1CF
aB5ZoIx1WXVLyoWaOFBSZCMWRY20Uo7T1eeLYAqxRVtaQ1FSUIhehWjmTVn1BcdFKBCF0V5QUrZS
SAbtxY0L3OBSY5+aMGRTk0xEupQdKCTKmG4SDfaanSoi16hSg8LB25pIRbfRQZQhhYKcayqqyXgv
Ff/
2GqUqdcZRpboRBxt1XK10G0Go6RbXRQZl1NiUR930EmBHUSdffTf5ZBActPkC2Ge4UMcRlJ1J
plKfjUW6H6VL4lJcQiPtWZu4je6JYUHmGmWtRNxQV1OVT/EkBbqU
+KWJXNFNR0lzPxXkAnNU+SVY
Qs16Ve++fAWnqVeXYaGiJqNBGRFRu
+HFVIZEUZXgoSk6tZlkt10LClSVRbkRS3jd5qPCPl1GGWWK
ZjuaTwIKBy9GU+7lQkaDdaYUh9mSlltkQ
+npwqqRcbUmQhmO1SOGjblolLmhbcbsmgyZ9tpOrFFi
YUp+cYNOQoOVZpRpcKiHUn/PfYfeZ/
GBKepClU3/5CBgO7Ekp0USwTFVcYgnV91LzvrSZ1QBjtbh
RjvRRrhZGQYdEkUiYQgzhmbjQlCAU7bVFl96nbUkRkSxNbZIPDGBhc3ccINFc6sxxBKY9FLy9Fco
vQpRZ2tF5epQ6fGxZkJo7dURcqI6pfdLjUXHl8XEzSq7WSH1RpVFa/
G03F8i3XQWhsLjAkpFoDm0
1ZLUdYbuQW5VthRXIcr5aqKWCYYXH2ThC1mK06+LII5QS9rLZgyHAsON5EOxYQKAolKQiKCABlvJ
n4puA5E4iYMPrdnKa/rmnZUEx0ZmEkm2ItUa0BhkKyiZTl0mksG
+zG5NqzkY9C5mPEL9hCK9Gdpv
/
yISkZ9kyywowAKIDGeQkYSFMEXxyL6A1sBXpeQ2vUGNtlQCFSShw0OBUZFWctMbjKwpJHGjiF/
I
VZSpVEkwphkRlDD2EGtJ8FUXyY8AEzYv4hANMF4ZXEea1CGPnIUnT5TZ4AjmkIgoRGi
+IAhbJPKP
SlrykpjMpCY3yclOevKToAylKEdJylKa8pSoTKUqV8nKVrrylbCMpSxnSctL9gkpYKqlLnfJy176
8pfADKYwh0nMYhKzOBXhijGXycxmOvOZ0IymNKfZTN5QhSzUzKY2t8nNbtISBd4MpzHrVStciPOc
6EynOtfJznaSclQUgYM750nPetrznvik5bbgUP+SfPrzn/
8AJ0AHSlB07udpWymoQhfK0IY6tJZL
8g8lHkrRilr0ohaljl
+shdGOepSZAv2oSEsZKEXJc6Qo7WZIU8rSgXZxJr5oqUxnStOashIdIbqM
C2zK05769KeRMttmfkrUi660qJY8qkxdEJyhIfWpUK2oUmXqCwCqRApRzapWCzpVY3aVmU8j3ES3
Stay2vOrI8XOrMzK1ramE60jDQlOEeLWutp1m3D96Fq6iIW7gpIGOqCBMQF7ScJiErCCxWRgdZBJ
xGZysY0N7GMNW1jJKpaylnRsKRG7WM4mVpOe7awoPftXy2YWsqbU7CVRq0nWVlK0qcxrR00zHeL/
+PWTrt3kZy3J2Faa9h+/fS1mgcvZy/
a2srv9B2mRO9njCje3uQ1lZ6c73NWGVrWcpG50jYtc55Iy
utg97G9hi0rZdhQ2vugQVm/
bSR0EN7KX9e1u3btJ17oXsM7dLnDHe9/8vve19D3tfVcb4M26d7H9
9W5lE4zg9jIYvwom8GchnMoBc7e+lD1wcktp3o72yI8drqt
+K4ndEZMSs9Ul8XiLe9oNP7e7802x
clfs2vCa0sS8Ha6JWaziFIOTtTjGbXVt3OIis9dJhAIFezupWQ0LGLIItiyUbQzdGGP4uFPGsozx
W2QLzzjCxMUyfYE83BD3uLTJ5bFiwQtmFfc2/8if5PKa24xaL98WCzfZDzeWnN3rSpm0oe2xdpmb
Yy2DWbWORfR/w1xoRr8YtKZNdKQXPUo4s9nFjv4uYeEsZAUT
+cyfrutteLQTPtcXyBa2L38nnV/M
FnjGTA7wgff7Zko7mstynnV2/8xY1MpZlb
+OtYJ1Hdk2OxjCMq50lJFNZ2Ybm60iecraTN1aHRu2
xCgObqiJa932bjrD3za2pCcs2W1nudGc9qSlh7zodFuXuqvU7nIhHWhWmrmi/
LTRbagd2TTzmtCP
bjQnsx1rwSra4LY+94t3XO5JIxzTJ7a1kd
+tW4lXfNzAlveIp5tpvzJ1bQ3k94UFjm3nhjfUBP/3
dq/BvXJxN5zcD1d5phWuynV7ut3JVnli3V3tm0Ocxds2656iFFOR8za4qXb1que8626ru7/
GtTOk
pc5gdVOYwA1eZbAH/moAH5rYRz821iv83o0rHeJmNUpyNmJ0gZOcxgA/
c8UrG2fyChrtz7V2kOd9
d/k+O+CA77fJze5dnlNcvD/XtsW1uhLY9Kntcjcy2IOddeVe8PDcDrvVwU7rnAP45Ha/
st67jng0
o1nDoRe8YKHOde9uPe7iHTbp3R54t34GI+LYM+Sr3NvlcnzGfib0ik/
fc7yH2cVqvniEU495mXf6
us9v+Ob7feU++5zrGzY8UftlFZhAfr/J9fL/1cNc615L/db+BaWTi/13/E618tZfPsP//
uXSnt/+
iz+/fu//+eZav9h
+BRygkB66932sFHQGmIAAZSWgsG8KWHOed28POIHZRAwekSHmRIGnhIAa2IHr
pBavogkeWEqcN4ImyE5Y4TiUcoIs2IILVVXrMVQuOIPnJIEeqBCHYYM0uIM8CE0FURAq0YNCOITh
tBoSZAdEmIRLpoOYxIS
+FBXWMhRKOIVUyEzoYS3pUYX05IRaWFQRAyXG14ViaFNcGE6EMx3rNYZq
uIatZCNFRAxsGIdyaEpVUSljNYd4mIeb1HiNoWR6+IeAOIASpEyAWIh4yBv2UnSGuIhr2D27/8EE
jBiJY8gXbAOHkniJVNgoB5KBPViGmFiFVMESGPOJpDiEI1End1iKquiCr4FeabiKsGiCEWERPhGL
tjiCviNCr3iLvJiA1nIUCkFKtZNJw8hKxYhJBRhKx0hNxbiMwmhJzhhL0QhKychJ0yhKx1iNlXSN
zMSNxlg72jiGDTQYgCGMzuiNoxSN6EiM4QhNzdiOn5SN8NhK68iO1DiP8ah701iPw8SPpgSO4CiH
X8Qa+MiOy+iPnqSOBYmMCzlODdlJCLlKEfkP9TiRl/SOmmSRvaSR
+ViAHOmCVYIQkJiOAQmNyViS
F6mQe3aOAGmS1ziMKEmRJ7mS1ciSMqmPLP
+pjQGJkS45kyUJkDSZkgdJk0MZkyZ5kymZlECZkTDp
kzN5kx5JlDa5jTgJlQwpjy55lFqJlFQpk1YplEoZlU
+5lWqoELQREebolV1JlTG5lD1plG4JlOEo
l1EZlgx5lXQpj20pl2sJle+4lIApliiZl2zZkng5mE/
plkJpmH4pmIxZmDVZlZCJmIapl2RpmV1J
mJD5lpvJlA8phPyBCx0yktgomTyplljJlUaplqqpkmzZl6hZl1f5mrGplT/
Jk7fZl6f5l7SJmLqp
k7zJmrVpkL0ZnL55l/
ZYlLZpnDgpmUnZmrQ5nLEpm8IZnWu4EwgBJWk5nHQ5mc5Znaw5lPb/uJzP
mZrPGZ7NWZljeZqe6Zzs+Z7paY3rOZ9MWZ70SZawyZmX+Z0Y2ZTg6Z/+KZx/
qZ6LCZcfOYMYoRvU
sZ1eOaC3GZdjeZ7iiZxrOaENOpfU6aDwWaHtyJfoCZsb2pkUKp0kup8gyp/
A2Z4RSqL9GZQKeaEs
mp65+ZZTKYdoWEUM+pX7iKHnuZUWaqICWpc76qPfCaTsmZXSGaI/+pU9qqQ8Sp5Qmp/
giZTmGaOZ
6aIpCqAoKqVBCpGfSYR5tBeWWJqLWZxm2popWpzA2Zy/6Zj1+Ztn
+qAcapqymZpy2qUfOpvQeaZ6
eqczKqVDmqdzGp2UuUmFeqJmWik
+yaV4/+g7ELEvOcqVflmglQRO3YmXk6mieqmYkkqh5smpl7qp
Ghqfokqd0/
mY3kmjA2qQjOmheFqmErqlmYqknQqWhBqhipmTLzqHgcQ6kRqka0qcOyqYhkqUmKqc
byqotUqlKFqUQcmssIqoIhqWkRmgywqtPdmkGBqZUQqs1UqreiqpP7qXxDmecmgQuVFqInWgvdiu
5WUSovNRqOqu9KpLxJAZfUGSebmv/Nqv/
vqvABuwAjuwAauoBHuwCMuXCbuwDNuwDvuwC9tWnohK
DcFA4qCvEJuxGruxHNuxGtuYHhuyIjuyBCuGySQnO1WvKmtq/
fEdiriyMHtX0xEZcROzNv9rVzYj
EX01ShN7sz4LUB7hKz37s0R7UUVRQ0WbtFClEnygMEr7tEQlBTRQHJqADlB7VldbS5STH1kbTUPb
tau0KtFxEWBbtg8FV9ayE5dhtmz7UYpyMJLRtnJ7UfrTGKkIpnPrgRb0J3nbtw1FGfUiGH47uAWF
FKKyoISbuP5kGsTwGV
+ruJC7TOnhPHwQuZY7T6mBFC97uZxbg7dRFEjYuaIrTs7BVHc7uqhLTUFD
KaErSivwuirwuiugAs5Eu7O0Aq+Eu55kuxelu8vku6AEvKwkvO6qL36xi5/
Eu72kvJ9EvKbkvM6L
SsyrSdH7StMrTdc7TdnLStt7izQxi6T/VL23O0rdK0rXW77hm7y7JL7OxL7P5L6oBL
+rSC4mRUrl
G7vKi7uza0n4+w/5G7uWNLv7m0n467v6C8CY1L8BfEm0W8CYBLwKfEkC/
MARnL0TrLsNrL8MLMEA
DL0KLMC8G8H/cMD8O8AljMDUW8H+a8KV1L/
Te8AQvMIBjMKVBMIJbMIZPMILPME17MI3nL8jTMMO
zL8wix7BUbmjJL4hXMIBVcMBbMAL7MSaBMQyLMVWDMVRDL1RrMNbjMUtbMUSPMM9TMRd/
MSZBLy6
i8ZdHMNf3MZgvMVcrMZXTLyv28VUzMV4jMdYXMdzXMZgvMQtjMV3LL+qyBHW0i/2y0nM/
2u7bEzG
wovBU5zAbwzJG5zHjEy9btzGWhzG/nvGD5zJbPzIBBzJmdzJlizJeYzJnEzFi+zJq8zJUXy
+pHzF
n2zKttzKp5zKZKyyDnIofui6BYzComzLqUzJWexJslvKl/zKsUzKw3y/
fEy8zJvGsBzHqFzNftzM
cGzNoQS7fzzJo8zJcuzIqlzLbjzNtAzOxGzM5lyvkTEVjpPIm4TLjazJwczOHEzJz4zKoazK9DzP
A4zPxQzKlTzMFIzDu6zJDAzCOMzDBBzQBE3MEj3Q63zPM4zQ4ZzO2nzL/
FzJKyzEMKsQ6SES6btJ
+7zN1FzO2IzPKX3MLl3Lw7zJ5NzOpv9czyyNzBotxePcSdIM0+JM06m8zKVs0m8Mxl6s0DnNxXcM
y4RcimmBFRgiz7OM1MqszrJc0PPc0TNdy//
syhuN0hFN1UXN1Qld0x491BN90lKMyysd1mMt0OsM
1hxd1bl8zegLi4ARKfVS0ll9znbtxUcNxwgszB4NyFV81XOdzv/
71mJc14Q9xu0s1InN1oaty4vt
2Ex8w9ms0Y0MyBAsUI+tx4Wd0Ozc1LCIEF/
UG1IN0EsdyA2czwv9wj6sww59wj9c0zRsySzcwxB8
wWgdxBos0bPN27oM3CHc0K390T8cvQ4M166d1sB91sSdz4uM0bRc28P93IJ9wvVMr+j/
gTFxW0ym
TVPjLU7lnbupi0lB0ijmAkzJ/VPdjU/n7Urznbc2cjJj6ktDHFU2PFB3XUv/
Dbn65iOcmN4GDk2g
KzwHbkqPu+D/sCLNUeAOPuHD1CdoUY5JbNG95Ny7a0oBXtylxNAFhdh9Xd+cxND7/
Uvsq8RT/dEG
jc3XnNHBe+K/XbvPpD8ts9pj3Uk2+N8mDuOd9OFEDeT3JNNDvktCHkv3y9MqvdQkfsbn+
+M1TkuE
HNjGdBC8URl8TeSwJL9SvuNHfkpG7k/jneRibkwrzuReTcfbDOZV/MBf/
uXka75lbUwqwRIcNef+
LMM23cEXfdW9Pdi1Xcy57dClHdsV/x3fMe7Jg67cO/zaH1zoKhzpj/zBQC3dD/
3YlQ3JlB5KrSzM
kx7Qkr7b2Y3dak7WQd7inyzKgR7G
+1vdr03oux3bUDzoGszcyH3ro77Bue1KGMIXzbHlBb3pa2zU
rkzsE53Yor3W33zOgK3nU3zUvsu7fBzEmb3sOk3tz77VaV7NrJzTaUztXL7STl7D077tfh3I2czi
4dztl07En77Lx73d5u7WJI7BVm7tGT3tZszZjT1LpTEVZmbB9m7VHY7tQH7Ukv3V
+LzwTS3CBo/V
pC3xDE/x1z3jzT7TyL5Sii7jcc3Mza7WYq3UPH3Pg727KD7rIL/MXZ3u3A7ULZ/slv
+t1bks8rK0
GWqDlkk85Dvd0iPvyvku03K8yUPv05gOSrEb2A7v1jtt7pKd3Em/wHed79Ft1iF/
1vD74hIM0RN/
wz7PzVut0i89wgL89W4u1Ckd00yN6l7P09H805iu1t8O97S0E7h0ugd/
7N6uzsbtzLTe5gi/8Mz+
1bgt4tJr1Sie8Y7N9eWu3R2/5geN1Mi+vXfN1o5f8Jcv3BEf5oTf
+TIfULUey4mP2RZv6VCuzxY/
8xQfyhpu5ukIN74j7GE/93UO3TIP17aLArRf+ps/vHTN3HtP
+E8P8n7t4xStzQoP5lkf2TT/8TFP
8qm/6D8//eIbUrFu9TIe2MZs+b3/X9YvzPa7P+6s5Dh/8RQ67vI1f+k9DeKCj/CAf+iaf/
x5n/oN
r/j9TPz3X8bye/2/j/4cXvkA8U+gQBUD/
60weJCgQYQDCypkuNDgw4YDGz5MaDEjRI4OPWbEuLEi
wpESP1b8hzFkSoElIyZcSXFiy4QoTUp0ibPmzY09fW6kZEcTMSl2fooE
+ZJmy5wrZH58mROizaUd
lTbEarFp06MwdzLVCFWl0o5ZLT69eZGhWas+V4JUy3Ek2oxUkZJF6bQqy7AhV2wNK/
en3bwzA5NN
epjrXpQq4/IF
+zVy4ap6E0MeG3hxV849peBCZwcdnM4OnZ6OCVOvXxUkz1r22rF1/+vXPhszpF2Z
duPVuG93nQ1b4Wm4fg3vdbw77fHgw7++RdxyNt/HB5VDvgydZ0zi1X+n7D6xd22xde+
+Tp3dPFTZ
wr8THM/7es3pdFm73ji99nvi7LGX/skXX3DBgglfAESwNLsSZLBBBx/
kCUIJH1xwQgotxLDBCjOM
DkIUOAQxRBE3skMKX+CwA5cRbTtuxQY/
dBHADWPMUDsaf7LxRgtzDJFHHX8EMkMm4KBEHFzECdK6
v5JkUsIZm4QySimnpLJKKzfSxBdKcNHySi+/BDNMMccks0wrfbEDDjik0MRMN9/
MEEY456SzTjt/
EqcoSuA48E4//
wQ0UEEHknNQKP9RQAEXTVBoU8bzpFvSSh87NPRHwiB8slJNN71SEwN9QcEFBHNr
8b0yJ+UURKlCzDRVV1+NEQ4sfHEBFykQxE+zy8psFdYJMxsRVV
+HJRZCcVBc81YAC0pvwbdIIpUl
UvtDT7Wx5oN2rurAM47aiLxVsjhrrZXPJtQ80s8/+LqNdl3XqC23J2zdJa9Ye
+9NkBIpxGEiKFyX
Y6nQveDTjDLBysMJ2Gl1ZfigVR1u+DuF2fNOsckki/
jhkVySiirKOj4MX5FHzqjE0ezos7SJ24rQ
XID7yi/mhgeO7aQWkRt42+1oZtllzKKL6UNTD9aJ5w43WypdYUlmGtB9UXTBKEf/
K4uQ5mZvpitk
nHfu+TmgX7p6PZh3zc8yicWmCQXjal4bWHll/
nmm5JqmG1ZixMEiUalVBtvoZ71GD16l4SY6aYRt
Vvc31PqDLjilvW3OtKfWbivofwr9e+t4y15Yt8XrBr1YO1CwI829O3NZZ6u/MhhHns
+O6tGpovu4
p0u7un0ltmi6PazWqfbddtRnDr34YX3hRhx9BQbOK7dfBzznuxq/
Kvrn7UM7a53VrvnmosdGl3Dq
vJcqa3VjQ9p49V1FQRxu7ND335r4kzd9pCvCaHf8N4MdO6ooL19g8kcxgLFGes46XOUIGLfVgQ
+A
64NgpezgAn6VaFTiixxSIFeX/3adSzxuKwnkxiM5smQuLe3i1rg
+uDl66WxD6ZINB3M1Psk5C171
AlcEdXgnOGjCVpQQVZKW1iPjDXGHR0Sig6TADW7ggg9BDFKvRCTFYVExiVfEYlcSJYXQpAxIRuQQ
GFOFwiyW0YylGZImggLFM7bRjW98VfuEAgcmwNFFzLNjHjuDRz1uRAqk0wQo6thHQhbSkF5SFBzE
Ab+pfY0zVryT+Zq3q8+5SIxHuSSA
+KigMGUyQZA8ZFd8iCImIImT38KY61wESlaRjUVi89mIWAm9
G83ySg9bkSdDuREXEAkdlBjkKWlCOdzFyJYZ8lhnqNc1WWJKdis6ZpVw2cxdZv/
IRO9zgbL4phH+
kFFawuHWtuZWHG3JDZz0wQ8xMxiXSoYsd8NjHDhhCCm5zHOF9CohbNRJwnuGcycbnA89fYNOG8Ew
W+QcTgfJSD
+BLsSe1UyQUHDBBDuYUpj805p1EjhDiDzvZXM5Xz0x2beDped8Hi3bWQ5HzMMs03Dq
+Z7/TALCqnVOox+NmPcYaFOxYLR7itMMSo+4SQ7ZgaJM6NcFZ4o4rbUNfeBrmTu5hpiK/
WdyTP0P
M9c1mFJxzWc8Clv0isasl2I1o1+tHto6OlLDDC2AVvkf72K6Vp1CtDMCkgJR2Di8kvonmVr7C1t2
15ZVaY9s+qtLpARLvKw2tjX/
vYshXHky2MEo9i4+y4pZMPtMq2Cvpqw7ymYBa7HOrgchT7GJYe3K
IF+wCQ7E2OsjJautDC4wXD9LjgfTCtWsorWl7FxqcI
+myhKCbXHaoa3tciNJccrVufXR5w3VWtWe
OS65ZPPsbqlj3aRcC1KRM+lqAZSlWkkBFAkiq9wyijHVOsdozHmqI7GqWrTcxqV1bSBj/
Na9xInV
rGrBHw1D+9nYCVB8b0sldTdatX9yk8GxFC8a16SJFH1ytlL96VTTa1VY+teESylUc
+kqU8jyNqoL
RG4q8zvXsuokhFNtq+yoW+IScziy2m1v+BwqPRtHGI1aEocvLNpIqp61wJGZ/
6yRIybUjelXsrPT
b4qLO9yWLvhio9UKLQsHYchSFmLAwymYfydm2pG2cDczGEgZ7GOf4IISnsJCbDlz34Zm
+LsyVaEM
6/XNHL1rz0py6lbXDOj/
6Za9VH0WtvQjsHNRpIMf5C93JF3Ob0WLpeDC9EMFvbWBdrNCEL6tQ+XJ
5qOokVFrIpkVdSk8Uq+a1DpEVIrYRDIjRvPAdiIqmGz9agiiAKkUHvK9rLjrLL
+a2Lw23iJB4UM5
I9vZz7YjnzyVPGhX29pvJAYlfOEpFV3b299G4pFQQAyjgtvc5zYerZRXbnS3290i2zYptfluetc7
VVLQ12fmbW9+9/tPb+bTvv/KmGt/
FxyC4mifCyhqcIY3vExqVBQQHT5xilvJBSjAtyZIU3GOdzxI
2maTGj0+cpKvCHl/
5MbGRUTwkrf83ShDARZM5HKa15xBoHCBLwy0b5v33OcJKUrOBfRzohf9H2rU
OOmMvnSb+9qoBmJ61FuO7wkmVepX7zi/bIUirHed4idKEb
+8PnaGM0HjrT0d6FhOdrZDKSif8de3
WzB3ute9SS3gEN6BRHc68b3da7+RFODQPjhwA9x1R/zck6R4DDH+R36HE
+TNDfgb8clIoKDE4RNv
9707XkKS1yHovU35G3GjVmhKu9w9nxDOH6X1/+B76xNvkNfj3far3zzuFR//
e9HDvvcCgfzufw96
yb/e93oHPuN5j/yBLJ/5y6d98R0f/OkPX/q3Z76YSC+Q7dPIU6UrSrt7j/
3fH1/2uU8+5zfffPKz
Hv3RJz/i4W989iP//e7Pvt/vf/300z/39p8981O/6gNAvbM7z1u//is/
Q9IEfhEHTeA5bxu/AvQJ
Auy/Czy+6Ku/5IO9CrTA9MNA6dvAjNA/38NA/BvBDFTBFVRB+qs/AyTA/FO
+6kvBGaRADgRB8yO1
1qIjFFA5cxM9/iPBDxRC6rvBBTTCESzCD0TBDny+1cvBFkRAG4S/KNyIJZTBJ4TB
+JNCDzxCKFwt
RtEENUo9BOk+LArCKcw+/wUcQC2Mwv
+zwiG8QSl0QwF0Qf3LwiskQjW0QjxcwypUQt2rQ94zwRI0
PjhkwQQ5w7pJk2OhhMxDtzSUQT1MQCx8QflLxCYEwSQMxARsQkHsCejrQyrsxJ
+wREB8w9srRC08
v0oEQ7sawx7ChR/
UvDUsvg6Uw1DkwxW0vj9MwQzkxBxcwFL8xSoMRjoERCTcReLbxVUsROYJwF58
tZRjglDptnOTRA2kRF0cRCbUxG3UwGZExq7wQ1QcQhP8xXIkRm5MRlCswQN0QWF8xWEMJXFQOLOL
wGubwC30Qnnsxn+Mw28UwPkbRX7MRRYsP0xcxzY0SG5syGxEyGMMRnWkx/
9DUpRfYqRIBMP7k8NW
bEc/9EgvjEFWVEg79EV1DMhLxL
+SRERl9ERJLEletMUAZMM59LFqtAOiMDyN9EUdJEchTEU1rEOR
NEdg3MeeRMlMLMoXpETsS8kNrL153Mfmw8X5+8Oo7MlqkjkpQKp8bDsXYcasfLxX/
MomOZIGnLmy
1BGIjJKKVEsd0TYyXMS3LI2YVMqxdEu6jBGKWhMXaBS9FJE7JMsbicc4ordCmZXRIIZrBMzG9JK5
lBDITBBbiZoecszLrBvJnExfQAfB
+0vMBM170cwE2TYKUqTQRM1iGc3JRJkiCabUhE1OWc3JdERK
IIbYxE3ZvJwgoSCday3/e5tAdtRDcBTIlJxKB/m/
wjRJdAQQmnS9jczLfjxI6VzJCJrN0vgjX8g2
r6zFmfTOqwS
+6WTKjhTPE2SQ5HRJeBRLq7TL8vRJCJFKsYTJb4MfWkE14BTEwRzOlcxD4VTJpUQQ
9BxM9KtIAX3OLFzPzrA94vRP87S2UHktbuCDPaq2sHRHBh1IAI3DmIzOn0zQgFTO91RAUxTKDIFO
+SxRcNO40DgWfmNG5nzKRBS
+4izGGdXQBsnL46TOhEABFC3AD1XQEz3Q8QS3iaIgYOq3JDxG4hTF
u3xHpwxPIA1SIJVGh0ROG5RSztBR4QxRILnOQGktCtO5JLXAJdVSKHXS/
6Dkxaq0kByNzx1NEOcD
kS3dxi51trf7DC+iNyX1RiZ1wj6dzibVz/
Mc1GI01EOtS46cEAH1Uef8th5aN8bcU0HdwkZlU3QM
UfVkPwf9vEKNUbLsUP5szytFzwP1RLuiPB/
cFybYSRcVPgos0FcNx0KlVDRtPE91UlDF1aZsyEU1
UBIN1VcTEFqBwIKT1U2k1WOl0Vzk0yw9Uyqdx0u90Wf90Vu9Sv1sRWddrRTJkt9M0j
+F1WRF0wVt
TmVtUmtN1JOUViKN0wvt1GuVTwy1tiYS08901fyEVuJLU/
7k1znFVTp1TxyE031NV3k9x2V1tiwJ
iqHzN1vNUGqdxH89RP87bdd8JU9gRdCsZEv4FFJgDdhnMxIjkQLutJAvrRsb/U
+IRViHzFgPLdd8
RURTVdSAVcZnNVgADdZqMpGJIhCDI9eVNdgOBdibbVCZdVSMPVqaTch1pdEEPUpv04TkIZ1me7c3
fVmiNUWsRdSiRdpR7dop5Vpt9Nj9HNgYfTVFsgM+KNZey8221aJ/
MKolGhK3pdszcoFsay09rdu9
3aEBCboy5NvANR5csANu0BLAFdzEpZt9GY21VdzHBR2NK6UjgdzKpRvTo5XPsNzNHRlFqhVP4dzQ
tZfChTuT7TjTRVWjsxUuGVm6RF3RhZUHXBRQecsPeV3YTZVsQhMhA8z/
28VdTQEFbtA4iQsl39UR
4/1dQ1EUJliiYCtL5E3eQBGKhYXehqve6P0TCjoS4cXe7g0UjcMCRble7yVfDmHesyPZ8lXfL0E7
s5PU9YXfMJmoNyul+LVfMUmekaWj++VfLyESisqS/
h2T8X1LFAkylBHgBJaSbaOwqFXgB2YSHxrZ
uYXgCtaRoVATb7XgDd7NEOESPmCT7nMcQ3E1GjGgWnOlOZOZcpGyVuKvQVMrfwopvsU4CqMEdLAw
/KKTY1MVztomShkw0wqZv+FhmqkxByliveTKz6XFSXphOylhEaEz
+dFhrkorOoviGH4yBkli0IQD
RXGf9w1iHDkn6XKx/
3Eyjw2CmWlZmExzj3nStDoLNT4LD38yFxSqjzTmKQWCL5ZJ49AaHDgeIazJ
s4RiIBm7DmY5p8tME3wzvRxGMDwbsY7qH/
GYGUe7YqTJLibLKelYKduqZNPgrQ8jmhmZpsjSpxnG
MOHiKVRRs1RGTSbABVy4OMQdDDwGLbRBLPIRKwUjLdFKJVLmsQfqsCM7MQcLKZD5M8YaZpJar7cK
niE+4qUYM8fcEjZBOArZY9UJNB4jZFTWKZZKIa1aMf/Y5E
+OMfn6HgR6mYHSrvqRJC0+ZN96L1i2
saFxTAn1wfp1Enf5i3hOZ3d5rOlysmqWGMtiiuj65zIWieCIFGIuZf/u+o+/iubGKpw
+e42FhucW
E7Fi9mezqeL6imQ/
djYCfhFFcTNIhJB49hFfxiDNCWdnJrAnmWJO62OLBrUe2zANUrGbJrCT8uY/
phRxtp4nzmKiSzkusRUqlmkow5hd7i+ZdumyCOqKPuYik2SfsurekgyO2gnd0bKc9uNufq
+CSK1c
fi9qxrBqbkxNOFINFiZOI2bH0LCUErP2qioDujFOJjO5trK9LrQqAyuPBjMg9uS9FmW3gBuammEA
AmjM1LaE09tHqq1N27M8rpxFTqg7Tic9k
+s6BrRC9uzLFuozyyHMrrS4GmOKqa2aDhcFQ20fNiis
MTTOnuQutjk10pL/
WvGTo9Yh3B4Z35Y6RGECPqBlPwFu40luX2FrXKs2ISuKNOnt1dLsMjI0t+VK
IOISDk5de9sT+LE67mYakz43RNE2vxRvJiFvugQVYkCeJkadOPZhyjam
+eYrIEli4V7h9RqiynZj
ZTquugW8nBuSiuLiKr6ZtcNtocIQ/U5hpk4S1ZbnSIboU1bnJnFwdNMXdBgS
+F5tGF4vJ3ZhkraQ
5U5rZYoSYQZxc25mFovpKDHxb8O4NxMH5/3w4FFo/
4mUhdhx8FgSaDGNwggspki0JTFre3YYzQ6s
zDiNjemzgR6mHvdxnP7xtXAMKQ+hR6u0IE+szuZx91iLUzprwTBl/1bLi/
9254Ke8iTPcHCr8egm
PSmztMSO6MXuHzaO6psSMLcK6FDWCBjBZFbuHXtGKbqmpTn/
qPpaGYtW7CcLr1sbsQrv5IQxq56D
QB
+EAxwmsoCe6BYn7LCSZAMDnxlxqQDjZalOsgQbGOZSskMz5hEb846mcMnYY3kWaS3+KjnJa6PD
K5QRY+LqZQ/br3a+7VMH5xMf9BDnHJi
+cPpa7KYmdhFbFeAybNOenkWWc7aKNGZ38ZorEi7i3U23
6lh/LMZhNarmdHFmbL/4Z9tpd0FH6PlBrVcn5YtY8ninFC8783J39lS394XekN
+hHo0xcyvHJWB2
6oSHqPVOiDG8OP+RWxZWu7QHm3UM26eu5vSQ7mtgF7CO5+NKh2Gytq1tt3aPt
+JVZioJ9y8Tu+d0
P/GSc9/WsnFtv+T4YvmLtvlQF65JrvbHuB6CxrNHd/ScfxRWZ/Gh9yoYa/
b18Khk32+gJ2vVqbkU
4YYtYpCL76lJZ5utb2cTAiqb5nZ2/qlzJhhYWvTB7mSTcmzdQGecrvjdUnm/nnT
+8awYH71fc9xR
GXKgMfK1wOczW3ObLrTTkup373KF2XHDT6zraJ2BRq4q1wrdiaXWMWMunx8vZwnF33fhaXLe6LKF
AnguAw90Iv1OK+jqLjm3jrdfd7k2T+87YZMBebOa+/vXp5s9Ebz/
PbG5664Shrd9gdCSBlSU5LXd
34+Sqndr3Sd+448SLSHcwcNe37f9kV02y4x45B7pRof0H0bwTnoRFb/
6lxdvAtcXey0mpYJkDlkQ
W2J/Q4Gk25X6W4LNEtE54uX++0Z/9c9+9FppEg7/
XAKIfwIHEixo8CDChAoTrljo8CHEiBInUqxo
8SJGi5S4+aJESdzEhv9UjFwhUuAKFSZRqiQpsOXJhilFmlRJ8OQ/
nC5L4pTZcGfOlTIJAh16U2jB
lAlhDpRpE2XTnE
+JKo0K1STOoEYNMr06leXWgl2p2nQ6UmxVr1ln5nx5lqjBmTuLum15U2pWnnex
2s3o9y/gwIIH/xMeaEeKJly
+4Ex0mdYx3LYD6Za0ChTq5LtvN0+N2ZQk5bqapWZ2y1VzZ9OV484t
vVoy7LSRMafGTPq01dm1Vc/1bLuqTBSjbb/VydL1bs6j8xZu7vw59OgLUUjBZUeclJCqJV/
mnZQ4
zYMiSYbfjLknccnhy/u2mrU7c+Ow425Xn9v+8PSQXX8X23+0cLm9R9x
+p6H333DllbZWffFJ9yCE
00U44UJY+IICJb4w0RiB6XmI13bjHQSZiPNxh5p/J+7XWmQMpvjiifUVSBt/
JfLHmo0m3pjUV94J
2B9ll624I0LyuShkejkyRyGTTTopHROgiKMJN9lJpORnj9301P
+MM0blWY7FtQikcgUuCVNfaCUH
H5ljdmhifFy
+6SKPYcamm1zAuWnZbwilGWSKRwY625OFGnroX0zgAgolmmwoUZcj9okin6e15iWW
5okJpo8Laqdpp6YJGqKM9FFKI6FJ4mZeezCGaaaOuBnZpqenxooorgoFmKtAu0LoCze48OGCJp
+G
duplCuL3HaeaKqusfa0p6OKACnUnpqrOTnoegvrN2a22/
x1oYqRwerekZgdWO6p7+fH6Lry42gGH
FC4QQwmH85XbqpyVmnofi6wKGHCoMQV8LaD+7qZlwQP/u1poBj/co3IAI7fcZ306+C9wB/
N78X3x
ijwyky74Mu//YcYup9JJfcmFrahTBZgsWuOyilS2cOKMkmxqtjotiFGleWeNO2+p1LNHx/
oym29O
JpvNbGUq3tBS1wV10FTZ7DLJXXvtHAqaSGEHJXZ8ffZz195KkdpoX9R2RGe6PTfdTOIChx3o4GJl
3X1bJHdFNvv9t0W7Lonu4IkrLtFiKKAgDmOLS75UkRe9PDmkiMftJ
+ade34QHJq4IA43xX5++kC+
or466617rbc4YavuOu2123477oPZcRgWY+f+O/DBC//k7BTSa4cmdjw6PPPNO/
983XiX7Yvp0Ft/
PfbZM0mMJligkLL24Ys/Pq/F9+2LC3Cgvzz5Z5vfPvzxR6hJ//Li8OGL/Pnrv3/
zTCiPjhRAwr8B
ErCAqHOB8lyAi/
cZsIG0Y6ADXccEcVAigAKMIAYzqEFeVQlyyoMfBDcowhEWygV8wAUl4HBBErKw
hS70y4ViGMIX0rCGNXRU2dRnwx3ykIe+WAwc4MC+HhKxiMyb4URUSAlioM+ITnxiA39oh+/
hAopW
vKL84OCC0SkKi178YvZChz4XIBGMZjzj6sShIQCCAo1ufGPtaOAL75HxSoQyipfcBRG4CUZzcPxj
BIPovx9CKjM/+1B9NicdPgKykQVMIRnhUEVFtqVEThlKzypZlK
+4jJPF4eRW2HKVl4SSYo48pf4o
gQuThU5lQ//izqssqbAkweqTk
+qXnhCJyl2OTxzCqtIkIwKazLyyVURjUV6Q5CNjwsw3jOQlNLP3
ESZggRIu0E6z9mNMZLLMYMb05kqIFpR+VUwv0fxdGc/5j
+Sh4zB822OZUPVNf4mnVIl0Zq3ESSR1
8rN5KACFLyBXPWH
+55WaegrQKkYnfN5mPAraSUL7KVHn8SFD9cLXp35UmXlCDZS9uSMoYzNMfYky
a36cKEpXlyE7UG+gqDspRGCa0pliTkpkDNtLh
+YXmZIsnTRFqR34IIXSoeOnRj0q41i6EYwitalO
LcgEXRBAPjy1qk+dV/KAZdWtptRXvkChOPKWUV3aKV9P+9P/
hNqGsMK0DVpcfaoaicUEn3qSc3+h
E8wMlUxQPYenb00pN+Z1IZ+GMkuk/
MnTPPOVmtxIXa8ZpyHPEs5wHnZLyJksZUeZWKU1BWrtYSyI
vPmlZ/
7VkeIg1hYjR1BkVspGjjEoploE2+M0dLYxcq2HRqrQWd52maKyTFn94tPSYnBvyGMCU2P6
20E1M1SoOivDQIVb58YonzdiLYxumd3e7haRwyUuRb47PpZqQn1mK6RoSIlL3/6Ga3r8rHvF6c3Y
giVkeTLsWUG2UPfWkmDghWYF5+iCotpRs76RJbcSXN0PHZi33V3WPb0V4f4wtF3ynBQzESXe/
+qq
dQFUIDqu/4le2jp0udi9LX3FFbNtMTSXtpUPMfM5XQS/
9sLPJS2H0UgJJqhPCm0ssMNqDNHofvRV
kuKNUVqWmyHHRsk8+2i2quZRyyJZPaGkbIZz3EhuqA8OKBiilsN8xu8hUBwrFDOav8gH5NJvw2l
+
MwmZ0BEptBLOdoYiMb4nRPzduc9FZAIZSfdOPxOahujrCORc5+ZCM3owH0EBMa7T6EmzkKXcYIIm
kkvpTUdwI7hALp85Leoo2gGFJxs1qh/ZEW5w48ypfjX8zIxVMMO61uFTnxTPa
+tdh293jvIyr4Mt
zSlJgRJUFTayn6dKdCTPpcl+9u+Sx4TScQPa1gYeYojhgv8uXrvbtmOC/
7is64gs2tvmbpIvip3A
c7MbdXvLECWw0O55dy55Q+0IvfO9OMXsjnqCKbe
+Az4RTaSbCb4TOMLdhgv6kc3ZCc8ewCUa1i8j
9+Fzi7ioxeE/
KSDG4h4nN4XUWN5if9zOGF8cx8U2ti9LNYXTA4UduIGCaob1hyYLcabJFkTvoUOL
lPiymefMjW2v2Tr1AsWikjdgXwg1rPQDBQpO2POOKCrmYtuirOHAvd7JnILzMnOe1QgKejnuZC4o
HZ1Ppglx0GDbvqaetk
+7GMFyHDF6BsXouLg7LCz8ZOqTM0sTOEH0Yeer9QuoFLCgQpNJId3cO63i
q3MyGqj/UIvIyxDeRsdxFBBrlTvmOPrgwBGLImbspcZQeaeECxTeLYAB1LoS7/
fDrF7n0kzgA/0e
rXGpqpwboOCG3mgQWBXSDxd6A6i6144CSWpRbwqc19h
+yHEex47jCgQWBfngy1YH0OCNF1ZAqYPr
C9nBhBWUAjrUOLa+X516KSS4wY1NPcRMW7COchS4dzfXxpf/0iZD/
EcElgvAnFAhzwJlGjGIAxYA
E/3QAAqkn/qgg6JMyXVQSQVWR/3AH5c5CmKQjRqpj8ZBTrElBhawmcbhgsYlT+hIAR/
8U1TJ2dhM
SWJIAaalW9j4mDj03JT40tjs2L1QkPeM3f1QSQuyFHZw/
5wafVlggQLBpdtitJq9BIuc0QvT3Q31
bBETEIP6cIRxSVuGnAw3KJ5iSAEKLEYFIQ8cqNL3uF9YWRMKMQoFaULUlddhhA4uLKAWIobGDd2l
TZHV9VimadG9CFH0UQJAyVwAleEQVtCnIZcSHcaOWV26kdEEBRADnt3PUcdGCNF1oKAWKYYkmVkK
wcEJzZ6cMWIFmQzabWJYQU4QIYYkbRsx3A0KLJA1gULj1eIXckOjhI6ZBZYq7dinxRu9lBconsze
mFkQQU6GzODwzQsiegSwWIcCTZDyyaEkVROiDV5HeBnpsBQNWh0CVRDe1KDYkM1cmdr3qFHZ7I0x
Zhof/P/
dRZ2il31aGr4h8lDH7iwfqH0aDSYP8sghAnHijmUIptXivPiPOXrE45gXEy4GnUkVq2Wa
o7ifGOWZhkSaE7IZGSpK
+rBZeZmMvf3clGhIIH4PwWUIFaUQj4Ge6NSgGpVa77CUGf4cLVYHOpTO
dfidzmmICu1N6NTgGQbUdUzbL61jGqrQ4yAjIWII0yUGUYreAo2eomhRR4TN7qzSl3FeLYofcmnf
YYjc9zzOUJ0d86UhElaQ2HCD8KXPycScBG7dEgXRjhmc55WfeflS0k1RRVXHjkmfdazd2rXiLJKN
dcThIJ1QYqDDzJXX7RmbCqkeyjBBiC3GYsjRrH0V2VD/
j1ClUEwOlSY8Ht4kxuMsCr2UDQpQHnmd
Xfe85Wmp0bAoXkfkJBaonGaGDkc8IJXYpRzSD/qwXtlIwSxix9gFFKBJn2B5RLZJVY/
tjbahXbEt
HLH4EmoBGhPmHOKFVQn6D8OpEFuu3WE4IWIQnALVZuhpAigY3D1upvIs31eVTWLY21dVye4gT8qt
YOwsBumUTcxh1fw5yuU9Tvdcx
+jIjgLFDvzxp8lgR3wKS999GUvlGeUxEVQSC8EJZ2KokZxRkyac
kK9VYEuJXoZsW3WY2ephVTwCGgXhIvrE5xylpAvEG7hFSaYlXvIs3OmlmxbVYLop497oIsHZI6Ct
HbN9KFodBh3B3UupkdcVBlA17Q7HVVOj0KAaEUNgKUauBZbYiA0KIkZABQQAOw=



From horpner at yahoo.com  Tue Oct  2 13:17:43 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Tue, 02 Oct 2007 17:17:43 GMT
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
	<1191272365.225974.41660@w3g2000hsg.googlegroups.com>
	<slrnfg4bro.28k.horpner@FIAD06.norwich.edu>
	<1191343344.454133.46790@n39g2000hsh.googlegroups.com>
Message-ID: <slrnfg4ve2.ac.horpner@FIAD06.norwich.edu>

On 2007-10-02, Arnaud Delobelle <arnodel at googlemail.com> wrote:
> On Oct 2, 12:42 pm, Neil Cerutti <horp... at yahoo.com> wrote:
>> On 2007-10-01, Arnaud Delobelle <arno... at googlemail.com> wrote:
>> > Scheme has prefix numeric operators, so that 1/2 is
>> > unambiguously (for the interpreter and the user) a litteral for
>> > 'the fraction 1/2'. You can't avoid the confusion in python, as
>> > binary operators are infix. Of course, we could create a new
>> > kind of litteral.  Let's see, / and // are already operators,
>> > so why not use /// ? ;)
>>
>> But you wouldn't actually need a literal rational represention.
>
> In which case rationals are better off in a module than in the
> language!

I was supposing that 1/2 would result in a rational number, which
would require language support, whether it's a literal rational
number or a division of two integer constants.

>> But I'm just playing Devil's Advocate here; I like rationals
>> in Scheme and Lisp, but I don't see a need for them in Python.
>
>> On the other hand, Python has had complex numbers a long time,
>> and it doesn't need those more than rationals, does it? My
>> guess is that it got complex numbers but not rationals because
>> rationals just aren't very efficient.
>
> Another guess could be that real numbers being closed under the
> four arithmetic operations, there is no danger to accidentally
> step into complex numbers. OTOH floats and rationals are two
> (conflicting) ways of extending integers.

You would have to adopt a few simple conversion rules, a la
Scheme. Inexact numbers are contagious, for example. It was
pretty shocking for a Scheme programmer to see the gmpy package
break that rule. ;)

> I use rationals a lot, and I don't want them in the language :)

Fair enough.

-- 
Neil Cerutti
The pastor will preach his farewell message, after which the choir will sing,
"Break Forth Into Joy." --Church Bulletin Blooper


From gagsl-py2 at yahoo.com.ar  Thu Oct 18 16:54:09 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 13:54:09 -0700
Subject: strptime and microseconds
In-Reply-To: <1192725976.909230.265280@q3g2000prf.googlegroups.com>
References: <1192723239.854957.257280@v29g2000prd.googlegroups.com>
	<1192725397.632337.73420@k35g2000prh.googlegroups.com>
	<1192725976.909230.265280@q3g2000prf.googlegroups.com>
Message-ID: <1192740849.207061.251690@q3g2000prf.googlegroups.com>

On 18 oct, 13:46, mathieu <mathieu.malate... at gmail.com> wrote:
> On Oct 18, 6:36 pm, mathieu <mathieu.malate... at gmail.com> wrote:
> > >   I am trying to use strptime to parse my microseconds but I was not
> > > able the documentation for it. The only list I found was:
> Ok final version is simply:
>
> s1 = "20070619"
> s2 = "115344.51"
> s3 = "115446.123456"
>
> ms2 = eval(s2) % 1
> mms2 = int(ms2 * 1000000 + 0.5)
> ms3 = eval(s3) % 1
> mms3 = int(ms3 * 1000000 + 0.5)
>
> s = s1 + s2
> d1 = datetime(*strptime(s[:14], "%Y%m%d%H%M%S")[0:6])
> d1 = d1.replace(microsecond = mms2)

What about this:

py> import datetime
py> s1 = "20070619 115344.025"
py> p1, p2 = s1.split(".", 1)
py> d1 = datetime.datetime.strptime(p1, "%Y%m%d %H%M%S")
py> ms = int(p2.ljust(6,'0')[:6])
py> d1.replace(microsecond=ms)
datetime.datetime(2007, 6, 19, 11, 53, 44, 25000)

--
Gabriel Genellina



From dstromberglists at gmail.com  Wed Oct  3 20:24:32 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Wed, 03 Oct 2007 17:24:32 -0700
Subject: A question about subprocess
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
Message-ID: <pan.2007.10.04.00.24.29.128486@gmail.com>


You don't necessarily need the subprocess module to do this, though you
could use it.

I've done this sort of thing in the past with fork and exec.

To serialize the jobs on the machines, the easiest thing is to just send
the commands all at once to a given machine, like "command1; command2;
command3".

You can use waitpid or similar to check if a series of jobs has finished
on a particular machine.

An example of something similar can be found at
http://stromberg.dnsalias.org/~strombrg/loop.html

(If you look at the code, be kind.  I wrote it long ago :)

There's a benefit to saving the output from each machine into a single
file for that machine.  If you think some machines will produce the same
output, and you don't want to see it over and over, you can analyze the
files with something like
http://stromberg.dnsalias.org/~strombrg/equivalence-classes.html .


 On Wed, 03 Oct 2007 16:46:20 +0000, JD wrote:

> Hi,
> 
> I want send my jobs over a whole bunch of machines (using ssh). The
> jobs will need to be run in the following pattern:
> 
> (Machine A)   (Machine B)  (Machine C)
> 
> Job A1             Job B1            Job C1
> 
>  Job A2           Job B2            etc
> 
>  Job A3          etc
> 
>  etc
> 
> Jobs runing on machine A, B, C should be in parallel, however, for
> each machine, jobs should run one after another.
> 
> How can I do it with the subprocess?
> 
> 
> Thanks,
> 
> JD




From jgodoy at gmail.com  Sat Oct  6 07:19:00 2007
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 06 Oct 2007 08:19:00 -0300
Subject: Yet another comparison of Python Web Frameworks
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<1i5kbfo.xq3fut1f7ouujN%raims@dot.com>
Message-ID: <kh7kt4-v7q.ln1@strongwill.g2ctech>

Lawrence Oluyede wrote:

> Thomas Wittek <mail at gedankenkonstrukt.de> wrote:
>> At least, you missed Turbo Gears :)
>> http://turbogears.org/
>> For me, it feels more integrated than Pylons.
> 
> Yeah, so integrated that the next version will be based upon Pylons ;-) ?

What is good, since a lot of good things from Pylons will work with TG and a
lot of good TG things will remain (and possibly be compatible with Pylons). 
If you take a better look at "the next version", you'll also see that the
major concern was with WSGI support and reinventing / "rewriting" the wheel
(what TG developers don't want to do all the time).

As an example of this fusion, take a look at ToscaWidgets.  Works, *today*,
with both frameworks.  You don't have to wait for "the next version".


From http  Tue Oct 23 05:45:57 2007
From: http (Paul Rubin)
Date: 23 Oct 2007 02:45:57 -0700
Subject: How to implement function like this?
References: <ffkba5$1u6$1@wake.carmen.se>
Message-ID: <7xir4yp3je.fsf@ruckus.brouhaha.com>

"Yinghe Chen" <yinghe.chen at jeppesen.com.rm> writes:
> def funcA(tarray):
>        a = [2,3,4]
>         if len(tarray) >=3:
>              return a[0],a[1], a[2]
>         elif len(tarray) == 2:
>             return a[0],a[1], funcB(1)[0]
>         elif len(tarray) == 1:
>            return a[0], funcB(2)[0], funcB(2)[1]
>         else:
>             return funcB(3)[0], funcB(3)[1], funcB(3)[2]

untested:

    from itertools import chain, islice
    def funcA(tarray):
       xB = max(3 - len(tarray), 0)
       return chain(a, islice(funcB(xB), xB))


From bj_666 at gmx.net  Wed Oct 10 17:16:50 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 10 Oct 2007 21:16:50 GMT
Subject: I'm starting to think like a Pythonista
References: <fejah0$lkk$1@solaris.cc.vt.edu>
	<5n4sqoFg4bs3U1@mid.individual.net> <fejeni$qte$2@solaris.cc.vt.edu>
Message-ID: <5n4tq2Ffu79fU6@mid.uni-berlin.de>

On Wed, 10 Oct 2007 17:03:41 -0400, brad wrote:

> Bjoern Schliessmann wrote:
>> brad wrote:
>>> low_odds = [1,3,5,7,9]
>>> # make a list containing 10 - 98 evens only
>>> big_evens =  big_evens = [x for x in list(xrange(99)) if x % 2 ==
>>> 0 and x >8]
>> 
>> Why use xrange if you convert it to a full list in place? No
>> advantage there.
> 
> What is the dis-advantage of using xrange over range in this circumstance?

It's an unnecessary intermediate step.

Ciao,
	Marc 'BlackJack' Rintsch


From http  Wed Oct 24 21:37:27 2007
From: http (Paul Rubin)
Date: 24 Oct 2007 18:37:27 -0700
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
	<mailman.336.1193075066.13605.python-list@python.org>
	<1193264370.786983.242180@y27g2000pre.googlegroups.com>
Message-ID: <7xk5pcug88.fsf@ruckus.brouhaha.com>

marek.rocki at wp.pl writes:
> > It's only a moment before the metaclass and
> > the Twisted solution come along. :)
> 
> I couldn't resist. It's not as elegant as I hoped, but hey, at least
> it memoizes the intermediate classes :-)

It gets even weirder in Haskell.

http://www.willamette.edu/~fruehr/haskell/evolution.html


From lew at lewscanon.com  Sun Oct 21 11:45:59 2007
From: lew at lewscanon.com (Lew)
Date: Sun, 21 Oct 2007 11:45:59 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192980705.698811.128060@i38g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
	<471b64b2$0$90272$14726298@news.sunsite.dk>
	<1192980705.698811.128060@i38g2000prf.googlegroups.com>
Message-ID: <PYqdnQWoU7yl6YbanZ2dnUVZ_qOknZ2d@comcast.com>

llothar wrote:
> On 21 Okt., 21:39, Arne Vajh?j <a... at vajhoej.dk> wrote:
> 
>> That level of activity could be considered dead.
> 
> For me at least 2% of the total line count should be changed
> to call it non dead.
> 
> I don't say it it not used anymore for users it might be
> not dead but this is not the point under discussion here.

No, there are two points - not whether Tex is "dead", but whether it's a "dead 
end" (which do you mean?), and whether in any way that says anything about 
Knuth's ability as a programmer.

Evidence is that TeX development is dead.  There is not yet firm evidence that 
Tex is a "dead end" (or even what that means), and there has been none (nor, I 
expect, is there any) that any of that reflects on Knuth's skill as a programmer.

The switch from asserting "dead end" to asserting "dead" is sort of an 
interesting rhetorical device.  Just pick one or the other, or if you prefer, 
assert both, but please be clear.  Should we just accept that you meant, "less 
than 2% of total line count changed"?  Per year?  Per century?  What if the 
code is perfect and has no need of change?  Is it (a) dead (end)?

(Who uses line count as a metric of anything any more?)

-- 
Lew


From mensanator at aol.com  Mon Oct  8 20:49:14 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 17:49:14 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.1683.1191875030.2658.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1683.1191875030.2658.python-list@python.org>
Message-ID: <1191890954.212790.247900@50g2000hsm.googlegroups.com>

On Oct 8, 3:23 pm, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> On Mon, Oct 08, 2007 at 01:12:32PM -0700, mensana... at aol.com wrote regarding Re: pytz has so many timezones!:
>
> >  [ I wrote ]
> > > Reducing them to a single time zone will result in aberrant functionality in one or more locales.
>
> > I would hardly think that's an issue on the user registration
> > form the OP is trying to create.
>
> You don't think that it's an issue that the OPs users will complain about their time being inaccurate?  If I register in what we in the US call Eastern Time Zone, I don't want to have to switch to Atlantic time zone just because the form designer couldn't be bothered to include a time zone that actually matched the function of the clocks in my area.  

That wasn't my point. If you know you're in GMT-5 and your computer
knows you're in GMT-5, why do you have to peruse a list of 400
choices,
most of which don't match your GMT offset?

>
> Pedantry about the definition of a time zone is not going to win you points with irate users.  

Fine. Then make the user scroll through 400 choices. See how many
points that gets you.

>
> Cliff




From wsguglielmetti at gmail.com  Sat Oct 27 21:04:42 2007
From: wsguglielmetti at gmail.com (wsguglielmetti at gmail.com)
Date: Sat, 27 Oct 2007 18:04:42 -0700
Subject: Unix domain socket in python example?
Message-ID: <1193533482.222474.119600@v3g2000hsg.googlegroups.com>

Hi,

How are you?

I'm completly new in python but I know a little of C.

I developed a small application in python which generate and receive
some data from times in times (question of seconds) and I need to send
this data to a unix domain socket (/var/run/sfp) and read the
response and print on the screen.

I looked for a example of source code in python which connect to a
unix doman socket, send some data and print the response on the
screen, however I were unable to find it.

Can someone please point me to some resource in the internet that have
a code like that one in a fashion that I can adapt it? Or maybe post a
example code here in the forum..

Thank you,

Cheers



From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 25 19:05:54 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 25 Oct 2007 23:05:54 -0000
Subject: Delete all not allowed characters..
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
	<pan.2007.10.25.15.42.34.428907@vscht.cz>
	<13i1m1idi8f2r46@corp.supernews.com>
	<pan.2007.10.25.21.23.36.955922@vscht.cz>
Message-ID: <13i28ainu6evk7e@corp.supernews.com>

On Thu, 25 Oct 2007 23:23:37 +0200, Michal Bozon wrote:

>> Repeatedly adding strings together in this way is about the most
>> inefficient, slow way of building up a long string. (Although I'm sure
>> somebody can come up with a worse way if they try hard enough.)
>> 
>> Even though recent versions of CPython have a local optimization that
>> improves the performance hit of string concatenation somewhat, it is
>> better to use ''.join() rather than add many strings together:
>> 
>> 
> String appending is not tragically slower, for strings long tens of MB,
> the speed makes me a difference in few tens of percents, so it is not
> several times slower, or so

That is a half-truth.

Because strings are immutable, when you concat two strings Python has to 
duplicate both of them. This leads to quadratic-time behaviour, where the 
time taken is proportional to the SQUARE of the number of characters. 
This rapidly becomes very slow.

*However*, as of Python 2.4, CPython has an optimization that can detect 
some types of string concatenation and do them in-place, giving (almost) 
linear-time performance. But that depends on:

(1) the implementation: it only works for CPython, not Jython or 
IronPython or other Python implementations;

(2) the version: it is an implementation detail introduced in Python 2.4, 
and is not guaranteed to remain in future versions;

(3) the specific details of how you concat strings: s=s+t will get the 
optimization, but s=t+s or s=s+t1+t2 will not.


In other words: while having that optimization in place is a win, you 
cannot rely on it. If you care about portable code, the advice to use 
join() still stands.


[snip]

> Nice, I did not know that string translation exists, but Abandoned have
> defined allowed characters, so making a translation table for the
> unallowed characters, which would take nearly complete unicode character
> table would be inefficient.


The cost of building the unicode translation table is minimal: about 1.5 
seconds ONCE, and it is only a couple of megabytes of data:


>>> allowed = u'+0123456789 ????????????' \
... u'ACBEDGFIHKJMLONQPSRUTWVYXZacbedgfihkjmlonqpsrutwvyxz'
>>>
>>> timer = timeit.Timer('not_allowed = [i for i in range(0x110000) if 
unichr(i) not in allowed]; TABLE = dict(zip(not_allowed, u" "*len
(not_allowed)))', 'from __main__ import allowed')
>>> 
>>> timer.repeat(3, 10)
[18.267689228057861, 16.495684862136841, 16.785034894943237]


The translate method runs about ten times faster than anything you can 
write in pure Python. If Abandoned has got as much data as he keeps 
saying he has, he will save a lot more than 1.5 seconds by using 
translate compared to relatively slow Python code.

On the other hand, if he is translating only small strings, with 
different sets of allowed chars each time, then there is no advantage to 
using the translate method.

And on the third hand... I can't help but feel that the *right* solution 
to Abandoned's problem is to use encode/decode with the appropriate codec.



-- 
Steven.


From beema.shafreen at gmail.com  Sat Oct 27 23:39:28 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Sun, 28 Oct 2007 09:09:28 +0530
Subject: iterating over the other and finding the greatest
Message-ID: <aa405c1f0710272039t280b918at1e2a9810eceee522@mail.gmail.com>

hi everybody,
                 I have file with four columns:the content:
   column1    column2     col3       col4
10000175    10000234    43    A_16_P03652190
10000277    10000336    387    A_16_P41582022
10000723    10000782    98    A_16_P03652191
10000880    10000932    270    A_16_P41582024
10001202    10001261    539    A_16_P41582025
10001800    10001859    16    A_16_P41582026
10001875    10001923    43    A_16_P21378376
10001966    10002011    361    A_16_P03652193

for the column3 :
have carry out a process a>b then i should print the line and if b>c then i
should print the line and c>d then i should print....... like this i have to
continue.say for eg: 43<387 so the first row is omitted, 387 is greater then
98 so i can print the line second row...
my code:
 fh = open('364010_spacing','r')
for lines in fh.readlines():
        data = lines.strip().split('\t')
        start =data[0].strip()
        end = data[1].strip()
        values = data[2].strip()
        id = data[3].strip()
        if a > b :#hanged up here
                        print lines
but i am not able to do the above,,,, can you people guide me in a right
way.. I should proceed further...
regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071028/00c30bf7/attachment.html>

From lasses_weil at klapptsowieso.net  Wed Oct 24 19:16:57 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 25 Oct 2007 01:16:57 +0200
Subject: [0..9] list (range) syntax
In-Reply-To: <pan.2007.10.24.22.44.28.712782@vscht.cz>
References: <pan.2007.10.24.22.44.28.712782@vscht.cz>
Message-ID: <471fd26a$0$13110$9b4e6d93@newsspool2.arcor-online.net>

Michal Bozon wrote:
> many Python newcomers are confused why
> range(10), does not include 10.
> 
It produces a list of ten elements. Also the documentation is quite 
clear on the topic. And lastly: This will probably really bother you for 
a week, then no more.


> If there was a proposal for the new
> syntax for ranges, which is known
> e.g. from Pascal or Ruby...
> 
>>>> [0..10]
> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
> 
> ...is there a chance to be approved ?
> 
Quite close to none. It is too much cosmetics and too little 
enhancement. What would that make possible that is impossible by now or 
what would that make easier that is really hard?

And if you really need something like that, write a function:

def fullrange(start, end):
     r = range(start, end)
     r.append(end)
     return r

/W


From arkanes at gmail.com  Thu Oct 25 06:32:19 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 25 Oct 2007 05:32:19 -0500
Subject: Cross-platform GUI development
In-Reply-To: <1193270861.900672.125650@e34g2000pro.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<mailman.158.1192250064.927.python-list@python.org>
	<1193164449.831675.200600@i38g2000prf.googlegroups.com>
	<mailman.387.1193165961.13605.python-list@python.org>
	<1193270861.900672.125650@e34g2000pro.googlegroups.com>
Message-ID: <4866bea60710250332t233fa15em1c9220fa83a07386@mail.gmail.com>

On 10/24/07, bramble <cadet.bramble at gmail.com> wrote:
> On Oct 23, 2:59 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> > On 10/23/07, maco <maco... at gmail.com> wrote:
> >
> >
> > > On Oct 13, 12:34 am, Michael L Torrie <torr... at chem.byu.edu> wrote:
> >
> > > > Qt doesn't look very native on my desktop.  In fact, Qt apps have always
> > > > looked out of place on a Gnome desktop.
> >
> > > > On Windows and Mac, no question, they look pretty native.  You do have
> > > > to take pains to make the app "feel" native, though.  Like follow the UI
> > > > guidelines of the platform,  etc.
> >
> > > > > Just a question of "feeling" I think; because most of those GUI
> > > > > framework, offer quiet the same functionality.
> >
> > > GTK (like Pidgin or the GIMP) looks pretty native on Windows to me.
> >
> > This can only be because you don't use these programs often, or you've
> > never actually looked at them. The GIMP in particular has almost
> > nothing in common with the native controls - it's got a different
> > background color, a different drawing model (note nasty delayed
> > repaints when resizing), clearly non-native dialogs like file pickers,
> > non-standard menu icons, just a huge list.
> >
> > Pidgin has a fairly minimal interface so it's flaws are less obvious,
> > but they're still there.
> >
> > If this doesn't bother you, more power to you, but don't make the
> > mistake of thinking that GIMP is any way "native" on windows.
>
> In the end, GTK+ is themable, and it's a free software project, so if
> the MS Windows port has warts, anyone can come along and polish it up
> for that platform.
>

There's been plenty to say about this in the past, so I will be brief:
Being able to use the native theme API is necessary but not sufficient
for native look and feel. Gtk doesn't even try for anything other than
a cursory attempt at "look", and as far as I know doesn't have any
real interest in doing so.

I don't have any problem than that, but I don't like people
misrepresenting what you get from using Gtk.

> --
> http://mail.python.org/mailman/listinfo/python-list
>


From greg.ewing at canterbury.ac.nz  Wed Oct 10 07:28:19 2007
From: greg.ewing at canterbury.ac.nz (Greg Ewing)
Date: Thu, 11 Oct 2007 00:28:19 +1300
Subject: ANN: Pyrex 0.9.6.2
Message-ID: <mailman.28.1192028079.927.python-announce-list@python.org>

Pyrex 0.9.6.2 is now available:

   http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/

Another couple of minor fixes.


What is Pyrex?
--------------

Pyrex is a language for writing Python extension modules.
It lets you freely mix operations on Python and C data, with
all Python reference counting and error checking handled
automatically.


From korovev76 at gmail.com  Fri Oct 26 08:54:24 2007
From: korovev76 at gmail.com (korovev76 at gmail.com)
Date: Fri, 26 Oct 2007 05:54:24 -0700
Subject: tuples within tuples
In-Reply-To: <s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
Message-ID: <1193403264.666264.113710@o38g2000hse.googlegroups.com>


[cut]
>
> Without a better example or explanation of what you are trying to do it is
> difficult

You're right.
Actually i'm parsing an xml file using pyrxp, which returns something
like this:
(tagName, attributes, list_of_children, spare)
Where list_of_children might "be a list with elements that are 4-
tuples or plain strings".

In other terms, if I have something like this:
('<tagA><tagB>bobloblaw</tagB></tagA>')
it's parsed like this:
('tagA', None, [('tagB', None, ['bobloblaw], None)], None)...

Fact is that my xml is much more deep... and I'm not sure how to
resolve it


thanx








From stargaming at gmail.com  Fri Oct  5 12:23:50 2007
From: stargaming at gmail.com (Stargaming)
Date: 05 Oct 2007 16:23:50 GMT
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
	<1191598625.701334.3450@57g2000hsv.googlegroups.com>
Message-ID: <47066516$0$29428$9b622d9e@news.freenet.de>

On Fri, 05 Oct 2007 08:37:05 -0700, timw.google wrote:

> On Oct 5, 10:33 am, "timw.google" <tjand... at yahoo.com> wrote:
>> Hi
>>
>> I want to write a python script that runs rsync on a given directory
>> and host. I build the command line string, but when I try to run
>> subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
>> os.system(cmd), I get prompted for my login password. I expected this,
>> but when I try to give my password, it's echoed back to the terminal
>> and the special characters in the password is (I think) getting
>> interpreted by the shell (zsh)
>>
>> I can't ssh w/o supplying a password. That's the way the security is
>> set up here.
>>
>> How do I use python to do this, or do I just have to write a zsh
>> script?
>>
>> Thanks.
> 
> I wrote a zsh script to do what I wanted, but I'd still like to know how
> to do it in Python.

`subprocess.Popen` has a keyword argument called `stdin` -- what takes 
the password, I guess. Assigning `subprocess.PIPE` to it and using 
`Popen.communicate` should do the trick. 

Check the documentation at http://docs.python.org/lib/module-
subprocess.html for details.

Cheers,
Stargaming


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct 30 05:08:45 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 10:08:45 +0100
Subject: A Python 3000 Question
In-Reply-To: <fg5fku$5c1$1@solaris.cc.vt.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
Message-ID: <4726f496$0$5031$426a34cc@news.free.fr>

brad a ?crit :
> Will len(a_string) become a_string.len()? I was just reading
> 
> http://docs.python.org/dev/3.0/whatsnew/3.0.html
> 
> One of the criticisms of Python compared to other OO languages is that 
> it isn't OO enough

Really ? IIRC, Python doesn't have primitive types, functions are 
objects, methods are objects, classes are objects, even modules are 
objects... Isn't this 'OO enough' ?

> or as OO as others

Which ones ? Java, that does have primitive types ?

(snip question about len() not being a method - no personal opinion on 
the topic)


From xkenneth at gmail.com  Mon Oct 15 11:07:58 2007
From: xkenneth at gmail.com (xkenneth)
Date: Mon, 15 Oct 2007 08:07:58 -0700
Subject: View XMLRPC Requests/Responses?
Message-ID: <1192460878.597651.64680@k35g2000prh.googlegroups.com>

Hi,

    I'm working on developing an XML-RPC interface from LabVIEW to
python and I would really like to see how python is forming it's XML-
RPC requests/responses. Is there any way I can force these to a log or
print them to the screen? Thanks.

Regards,
Ken



From dbr517 at gmail.com  Tue Oct 16 13:22:24 2007
From: dbr517 at gmail.com (dbr517 at gmail.com)
Date: Tue, 16 Oct 2007 10:22:24 -0700
Subject: documentation for tk.call interface
Message-ID: <1192555344.720191.100630@v29g2000prd.googlegroups.com>

I'm using Python + Tkinter for a small gui . . . there are LOTS of
places inside Tkinter with code like this:

        self.tk.call('tkwait', 'variable', name)

(this particular one is from the IntVar class).

I've searched the Tkinter docs with no success; can someone point me
at the documentation for tk.call?

Thanks!

Dan



From aahz at pythoncraft.com  Wed Oct 31 22:04:41 2007
From: aahz at pythoncraft.com (Aahz)
Date: 31 Oct 2007 19:04:41 -0700
Subject: Endless GIL and thread confusion
References: <pan.2007.10.21.16.25.37.300233@hotmail.com>
	<1193060931.105181.81270@z24g2000prh.googlegroups.com>
Message-ID: <fgbc7p$30q$1@panix3.panix.com>

In article <1193060931.105181.81270 at z24g2000prh.googlegroups.com>,
 <kyosohma at gmail.com> wrote:
>
>I use the Threading module whenever I need to use threads. It works
>quite nicely and I have yet to have any problems with it, except for a
>little goofiness with WMI that was explained to me long ago. You might
>check that module out.
>
>The wiki for wxPython actually has a good tutorial on threads:
>
>http://wiki.wxpython.org/LongRunningTasks
>
>And here's an article on usurping the GIL:
>
>http://www.pyzine.com/Issue001/Section_Articles/article_ThreadingGlobalInterpreter.html

Unfortunately, that's all only relevant to someone writing Python code
(and I'd forgotten about that article!) -- the OP needs advice with C.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"Typing is cheap.  Thinking is expensive."  --Roy Smith


From steven.bethard at gmail.com  Tue Oct 23 16:39:39 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 23 Oct 2007 14:39:39 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471e431f$0$21451$426a34cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
	<471da4b7$0$22586$426a34cc@news.free.fr>
	<mJGdnU6r2cF2rYPanZ2dnUVZ_qSonZ2d@comcast.com>
	<471e431f$0$21451$426a34cc@news.free.fr>
Message-ID: <nuydnd4YcMaWwYPanZ2dnUVZ_hGdnZ2d@comcast.com>

Bruno Desthuilliers wrote:
>> I guess as long as your documentation is clear about which attributes 
>> require computation and which don't...
> 
> Why should it ? FWIW, I mentionned that I would obviously not use 
> properties for values requiring heavy, non cachable computation. This 
> set aside, the fact that the attribute is computed (or not) is none of 
> the concerns of client code. I think you know that concept, it's called 
> 'encapsulation' !-)

Encapsulation doesn't mean having no understanding of the object you're 
using.  We all use Python lists, knowing that adding to the end is 
cheap, and adding to the front is expensive.  If you're using someone's 
data type, but you have no idea where the performance costs are, you're 
just asking for trouble.  That's true even if you're not prematurely 
optimizing -- in the case of lists, doing the wrong sort of insert can 
make an O(N) algorithm an O(N**2) algorithm. So I don't think this has 
anything to do with encapsulation.

This really only has to do with what you and I think are natural 
programming intuitions. I agree that Python is not Java, or C, or 
whatever, but there are a wide variety of precedents in a wide variety 
of languages (the Python stdlib included) that lead many programmers to 
expect only minimal computation to be performed when accessing 
attributes. I believe we simply disagree on whether or not Python 
programmers need to be trained out of these expectations.

STeVe


From bj_666 at gmx.net  Thu Oct 18 06:24:59 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 18 Oct 2007 10:24:59 GMT
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
	<1192647190.910650.98390@i38g2000prf.googlegroups.com>
	<mailman.133.1192648267.13605.python-list@python.org>
	<1192658469.934075.156770@k35g2000prh.googlegroups.com>
Message-ID: <5noqjrFj14e6U1@mid.uni-berlin.de>

On Wed, 17 Oct 2007 15:01:09 -0700, kiilerix wrote:

> On Oct 17, 9:11 pm, "Chris Mellon" <arkanes at gmail.com> wrote:
>> On 10/17/07, kiilerix at gmail.com <kiilerix at gmail.com> wrote:
>> > >>> o = object()
>> > >>> o.foo = 7
>>
>> What makes you think it can't be instantiated directly? You just did
>> it. It's not, however, suitable for use as an arbitrary thing to stick
>> attributes on.
>>
>> Which is a little sad, but a necessary requirement for things like
>> int() and str() to be small and fast.
> 
> So it's an optimization with side effects, giving a special case where
> the simple and otherwise "right" way to do it doesn't work? Too bad :-
> (
> 
> Ok; I'll continue to create dummy classes inheriting from object. And
> hope that one day it will be simpler.

I'm using the following "dummy" class with a little extra functionality:

def Bunch(object):
    def __init__(self, **kwargs):
        self.__dict__.update(kwargs)

person = Bunch(name='Eric', age=42)
print person.name
point = Bunch(x=4711, y=23)

Ciao,
	Marc 'BlackJack' Rintsch


From fw3 at hotmail.co.jp  Mon Oct 22 12:57:08 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Mon, 22 Oct 2007 16:57:08 +0000
Subject: parsing the output from matlab
In-Reply-To: <Sq4Ti.2548$QP4.156@fe03.usenetserver.com>
References: <Sq4Ti.2548$QP4.156@fe03.usenetserver.com>
Message-ID: <BLU107-W4B71C65B6428BCFFD16FAB49A0@phx.gbl>


Hi, 
 
I have a big log file generated from matlabe, for each variable, it print the name of the variable and an empty line and then the value. such as:
 
x1 =
 
    0.1
 
y =
 
   7
 
z = 
 
   6.7
 
x1 =
 
   0.5
 
I want to use python to parse the file and selectively print out the vairable and its value. For example, I want to print out all the value related with x1, so the output will be
 
x1 = 0.1
x1 = 0.5.
 
I really do not know how to do it.
 
 
Thanks
 
Frank
_________________________________________________________________
???????????????????Hotmail Plus ??????????
http://get.live.com/mail/options
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/252d105e/attachment.html>

From akraemer at sbcglobal.net  Tue Oct  9 20:37:33 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Tue, 9 Oct 2007 17:37:33 -0700 (PDT)
Subject: storing meta data on dictionary keys
Message-ID: <9785.78885.qm@web81001.mail.mud.yahoo.com>

From: Chris Mellon <arkanes at gmail.com>
Sent: Tuesday, October 9, 2007 1:51:04 PM

> Because, by definition, if you have the key then you don't need to get
> it from the dict. What you're doing here is conflating 2 mappings into
> one: string value->person and person->values.  Use 2 explicit dicts to
> make it clear what you're going, or use one dict and store a tuple of
> values: person, friends = d["John"].

No, that was not the point.

I don't want the meta data to be used in the dictionary look-up, and in fact I want to be able to modify or delete it later w/o affecting dictionary look-up. In the toy example "John" and Str("John") are two different objects that map to the same value in the dictionary, and "John" == Str("John") is True, since class Str(str)  inherits __hash__() and __eq__() from str. IOW, if John dyes his hair, his friends shouldn't change :-)

Apart from this silly example I really encountered this issue when using the networkx library. As I mentioned, graph nodes are stored as dictionary keys there, i.e. nodes can be arbitrary objects with the only requirement to be hashable, and I am stuck with this data structure when using the library. In my example nodes are uniquely identified by their name (a string) but may carry other attributes, like their display color and shape, that are not used to identify a node. Therefore, I thought, subclassing str would be the simplest, most straightforward structure for a node object. 

Of course there are workarounds (e.g. get all keys with keys()), but I thought something similar to a get_key() dictionary method would be the easiest way to retrieve the actually stored key object, and I was just surprised to discover that no such method does exist ....

-Andreas







-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/8bc82c8b/attachment.html>

From Scott.Daniels at Acm.Org  Sun Oct  7 01:24:49 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sat, 06 Oct 2007 22:24:49 -0700
Subject: How to create a file on users XP desktop
In-Reply-To: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
Message-ID: <13ggr9laeo5kla3@corp.supernews.com>

goldtech wrote:
> ... I want the new file's location to be on the user's desktop in 
> a Windows XP environment....
> 
How about:
     import os.path
     handle = open(os.path.expanduser(r'~\DeskTop\somefile.txt'), 'w')
     ...

-Scott


From bj_666 at gmx.net  Tue Oct 30 14:59:35 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 30 Oct 2007 18:59:35 GMT
Subject: Parsing xml file in python
References: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
	<5opbmcFo3an1U1@mid.uni-berlin.de>
	<1193769917.594712.87990@k35g2000prh.googlegroups.com>
Message-ID: <5opd8mFliu6sU3@mid.uni-berlin.de>

On Tue, 30 Oct 2007 11:45:17 -0700, amjadcsu wrote:

> I am not getting into the xml parser.

What does this mean!?

> The error is not generated but also the /root/yhpc-2.0/ganglia.txt does
> not contain anything.

Maybe because?

>> >     def endElement(self,name):
>> >         if name=="HOST" and self.searchTerm==self.hostname:
>> >             try:
>> >                 fh=open('/root/yhpc-2.0/ganglia.txt' ,'w')
>> >             except:
>> >                 print "File /root/yhpc-2.0/ganglia.txt can not be
>> > open"
>> >                 sys.exit(1)
>> >             fh.write("This is a test for xml parsing with python with
>> > chris and amjad \n")
>> >             fh.write("the host name is", self.hostname, "\n")

?this line will raise an exception.  `file.write()` takes just one
argument, not three as in this call.  If you don't get an exception maybe
you have other places with a bare ``except`` like in the snippet above. 
Don't do that.  Catch the specific exception you want to handle with an
``except`` and not simply *all*.

Ciao,
	Marc 'BlackJack' Rintsch


From jackieburr at gmail.com  Tue Oct 23 18:51:16 2007
From: jackieburr at gmail.com (jack)
Date: Tue, 23 Oct 2007 15:51:16 -0700
Subject: More friends more money,get friends while get paid
Message-ID: <1193179876.689581.115480@e9g2000prf.googlegroups.com>

More friends more money,get friends while get paid
http://groups.google.com/group/all-good-things/web/get-friends-while-get-paid
Get 1 Million Guaranteed Real Visitors, FREE!
http://www.t2000ultra.com/?rid=12740



From iansan at gmail.com  Thu Oct 11 02:23:06 2007
From: iansan at gmail.com (IamIan)
Date: Thu, 11 Oct 2007 06:23:06 -0000
Subject: CGI and external JavaScript nightmare
Message-ID: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>

My website is built from a Python CGI and works great. I'm now
including Google Ads, which requires two pieces of JavaScript; the
first contains the display settings for the ads, and the second piece
is a very lengthy garbled js file at http://pagead2.googlesyndication.com/pagead/show_ads.js

The first piece of JavaScript works fine and the ads display
correctly, however the second file throws an "unterminated string
literal" js error. Looking at it you can see a healthy amount of both
single and double quotes, which is where my problem lies.

What is the best way to get the second js file into a nice printable/
usable format? cgi.escape? xml.sax.saxutils.quoteattr? String
substitution? I could use some guidance.

Thank you!



From cakebread at gmail.com  Fri Oct 12 23:56:58 2007
From: cakebread at gmail.com (cakebread)
Date: Sat, 13 Oct 2007 03:56:58 -0000
Subject: ElementTree find with xmlns
In-Reply-To: <1192246510.400104.191170@i13g2000prf.googlegroups.com>
References: <1192245542.394991.139770@i13g2000prf.googlegroups.com>
	<1192246510.400104.191170@i13g2000prf.googlegroups.com>
Message-ID: <1192247818.052623.269820@q3g2000prf.googlegroups.com>

On Oct 12, 8:35 pm, Rajarshi <rajarshi.g... at gmail.com> wrote:

>
> You have to prefix the element name with its namespace. The following
> will work
>
> >>> tree.find('{http://www.w3.org/1999/xhtml}body')
>
> <Element {http://www.w3.org/1999/xhtml}body at 779d28>
>

Pefect, thank you, Rajarshi!



From ldo at geek-central.gen.new_zealand  Thu Oct  4 00:45:07 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 17:45:07 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>	<fdtsfu$iq6$03$1@news.t-online.com>	<fdvn34$odf$1@orkan.itea.ntnu.no>
	<85ve9ov971.fsf@lola.goethe.zz>	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<fe113c$7ua$3@lust.ihug.co.nz>
	<mailman.1486.1191449321.2658.python-list@python.org>
Message-ID: <fe1r4j$o5m$5@lust.ihug.co.nz>

In message <mailman.1486.1191449321.2658.python-list at python.org>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>> In message <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0 at 4ax.com>, George Neuner
>> wrote:
>> 
>>> Dictionaries used to be the arbiters of the language ...
>> 
>> No they didn't. Before Doctor Johnson, there were no dictionaries.
> 
> And before the Big bang there was nothing (perhaps). What's your point?

That dictionaries were not some kind of Big Bang.


From jcd at sdf.lonestar.org  Mon Oct 29 16:58:58 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 29 Oct 2007 16:58:58 -0400
Subject: Built-in functions and keyword arguments
In-Reply-To: <Xns99D8BEA87A5Aduncanbooth@127.0.0.1>
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<Xns99D893230B22Cduncanbooth@127.0.0.1>
	<mailman.597.1193681389.13605.python-list@python.org>
	<Xns99D8BEA87A5Aduncanbooth@127.0.0.1>
Message-ID: <20071029205858.GA23146@sdf.lonestar.org>

On Mon, Oct 29, 2007 at 06:45:22PM +0000, Duncan Booth wrote regarding Re: Built-in functions and keyword arguments:
> 
> "J. Clifford Dyer" <jcd at sdf.lonestar.org> wrote:
> 
> >> I think you are being a little bit unfair here: help(len) says:
> >> 
> >> len(...)
> >>     len(object) -> integer
> >>     
> >>     Return the number of items of a sequence or mapping.
> >> 
> >> which implies that the argument to len has the name 'object'
> >> (although in fact it doesn't have a name). The OP was simply asking
> >> about the difference in calling conventions, not proposing to write
> >> code using 'object' as the argument name.
> > 
> > Hmm....  To my mind, that just implies that the *type* of the expected
> > input is an object.  Just like the "-> integer" tells you that the
> > type of the output is an integer.  If the documentation read
> > "len(s=object) -> integer", then I would expect a keyword argument s
> > typed as an object. 
> > 
> 
> How do you interpret:
> 
> >>> help(__import__)
> Help on built-in function __import__ in module __builtin__:
> 
> __import__(...)
>     __import__(name, globals={}, locals={}, fromlist=[], level=-1) -> 
> module
> ...
> >>> help(int)
> Help on class int in module __builtin__:
> 
> class int(object)
>  |  int(x[, base]) -> integer
> ...
> 
> Can you find any case (other than a single parameter identified as 
> 'object') where you can interpret the help string as telling you the types 
> of the parameters?

OK, good point.  Perhaps it's not so specific as the type, but certainly the use of name and x in the docstrings listed above only imply something about the character of the argument, not the name of the argument itself, which is what I was trying to get at.  Help documentation for keyword arguments usually shows the argument being used as a keyword, like the example from __import__ above.

Thanks for the correction.

Cheers,
Cliff


From arkanes at gmail.com  Tue Oct  9 14:57:59 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 13:57:59 -0500
Subject: pytz has so many timezones!
In-Reply-To: <1191954101.289278.216770@g4g2000hsf.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<5n1ebbFfok0sU1@mid.uni-berlin.de>
	<1191954101.289278.216770@g4g2000hsf.googlegroups.com>
Message-ID: <4866bea60710091157p528f3700md8261f7f5f6c35d5@mail.gmail.com>

On 10/9/07, mensanator at aol.com <mensanator at aol.com> wrote:
> > Why aren't they separated by 30minutes, or 20, or 10? Or 2 hours?
>
> Why isn't an hour defined to be 30 minutes?
>
> > Or why don't we have a global time?
>
> Like UTC?
>
> >
> > Your 25 timezones are an abstraction the same way
>
> Not the same way at all. The 25 timezones I speak of are
> not merely an abstraction, but related to longitude.
>

See, here's what the problem is. You've invented your own definition
of "timezone", which has no relation to how anyone else uses the word,
and are now arguing loudly and rudely about how your pet definition is
right, and everyone else is wrong.

You should have just said at the beginning that you were just
redefining all the terms to match your preference, so I could have
killfilled you then instead of reading all your posts in hope that you
actually had something important and useful to say.


From byte8bits at gmail.com  Mon Oct 29 17:29:49 2007
From: byte8bits at gmail.com (brad)
Date: Mon, 29 Oct 2007 17:29:49 -0400
Subject: setting variables in outer functions
In-Reply-To: <mailman.604.1193692711.13605.python-list@python.org>
References: <mailman.598.1193689199.13605.python-list@python.org>	<fg5hj9$800$1@solaris.cc.vt.edu>
	<mailman.604.1193692711.13605.python-list@python.org>
Message-ID: <fg5jcn$a3t$2@solaris.cc.vt.edu>

Tommy Nordgren wrote:

>> def outer(avar=False):
>>      print avar
>>      if avar == True:
>>          return
>>
>>      def inner(avar=True):
>>          print avar
>>          return avar
>>
>>      outer(inner())
>>
>> outer()

>     This is not a general solution to this problem.

Run my example code, it works (if I'm understanding your question 
correctly). It sets outer to True... inner returns True to outer and 
thus the var is set... am I missing something?


From besturk at gmail.com  Mon Oct 29 12:08:01 2007
From: besturk at gmail.com (Abandoned)
Date: Mon, 29 Oct 2007 09:08:01 -0700
Subject: interesting threading result..
Message-ID: <1193674081.798831.24860@z9g2000hsf.googlegroups.com>

Hi..
I have a interesting threading result..

class GetData(threading.Thread):
   def __init__(self, name):
      threading.Thread.__init__(self)
      self.name = name

   def run(self):
        self.data={2:3, 3:4...}

current = GetData(a)
nlist.append(current)
current.start()
end=[]
dd=nlist[0]
dd.join()
result=dd.data
print result
(and it gives me : {2:3, 3:4...} )
end.append(result)
print end
(and it gives me: [<GetData(Thread-3, stopped)>, {2:3, 3:4...}]  )
What happen ??
What is the <GetData(Thread-3, stopped)>,  ?
In the first print there isn't it but second print it is in there.
I  don't want <GetData(Thread-3, stopped)>..
How can i escape from it ?

I'm sorry my bad english.
King regards..



From crwe at post.cz  Wed Oct  3 07:46:31 2007
From: crwe at post.cz (crwe at post.cz)
Date: Wed, 03 Oct 2007 04:46:31 -0700
Subject: enumerate overflow
Message-ID: <1191411991.165082.19010@o80g2000hse.googlegroups.com>

Hello all,

in python2.4, i read lines from a file with

for lineNum, line in enumerate(f): ...

However, lineNum soon overflows and starts counting backwards. How do
i force enumerate to return long integer?

Cheers.



From stefan.behnel-n05pAM at web.de  Wed Oct 10 05:13:53 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Wed, 10 Oct 2007 11:13:53 +0200
Subject: pyxml package not working? No xml.dom.ext.reader module available
	after install.
In-Reply-To: <1192005595.981054.150530@22g2000hsm.googlegroups.com>
References: <1192005595.981054.150530@22g2000hsm.googlegroups.com>
Message-ID: <470C97D1.4050300@web.de>

Thomas W wrote:
> I've tried to install the pyxml-package, available at http://pyxml.sourceforge.net/,
> both from source and using some hack on the win32-binary package
> available for python2.4, but without luck. After install the module
> xml.dom.ext.reader is not available, eventhough the folder, __init__py
> and everything is in place.
> 
> Why? And could someone please make a win32-binary package of pyxml for
> python2.5? Thanks!

PyXML has not been actively maintained for some years now. Use ElementTree or
lxml instead.

http://codespeak.net/lxml

Stefan


From mhearne808 at gmail.com  Thu Oct 11 10:52:37 2007
From: mhearne808 at gmail.com (mhearne808[insert-at-sign-here]gmail[insert-dot-here]com)
Date: Thu, 11 Oct 2007 07:52:37 -0700
Subject: PYTHONPATH on OS X
In-Reply-To: <1192057198.980192.238250@22g2000hsm.googlegroups.com>
References: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
	<1192057198.980192.238250@22g2000hsm.googlegroups.com>
Message-ID: <1192114357.868896.18700@50g2000hsm.googlegroups.com>

On Oct 10, 4:59 pm, Graham Dumpleton <Graham.Dumple... at gmail.com>
wrote:
> On Oct 11, 8:00 am, "mhearne808[insert-at-sign-here]gmail[insert-dot-
>
>
>
> here]com" <mhearne... at gmail.com> wrote:
> > I'm missing something major here.  I'm trying to add a directory to my
> > python path using the PYTHONPATH environment variable, and it's being
> > ignored by the Python interactive shell.
>
> > Below is a capture of what I did.  Note that my newfolder appears
> > nowhere on the list of directories in sys.path.  How do I get Python
> > to pay attention to my shell variables?
>
> > Using bash on OS X 10.4.10.
>
> > %:~ user$ echo $PYTHONPATH
>
> > %:~ user$ PYTHONPATH=/Users/user/newfolder
> > %:~ user$ echo $PYTHONPATH
> > /Users/user/newfolder
> > %:~ user$ python
> > Python 2.5.1 (r251:54863, Aug 10 2007, 10:46:58)
> > [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
> > Type "help", "copyright", "credits" or "license" for more information.>>> import sys
> > >>> sys.path
>
> > ['', '/usr/local/lib/python2.5/site-packages/
> > setuptools-0.7a1dev_r56320-py2.5.egg', '/usr/local/lib/python2.5/site-
> > packages/ipython1-0.9alpha2-py2.5.egg', '/usr/local/lib/python2.5/site-
> > packages/SQLAlchemy-0.4.0beta5-py2.5.egg', '/usr/local/lib/python2.5/
> > site-packages/MySQL_python-1.2.2-py2.5-macosx-10.3-i386.egg', '/usr/
> > local/lib/python25.zip', '/usr/local/lib/python2.5', '/usr/local/lib/
> > python2.5/plat-darwin', '/usr/local/lib/python2.5/plat-mac', '/usr/
> > local/lib/python2.5/plat-mac/lib-scriptpackages', '/usr/local/lib/
> > python2.5/lib-tk', '/usr/local/lib/python2.5/lib-dynload', '/usr/local/
> > lib/python2.5/site-packages', '/usr/local/lib/python2.5/site-packages/
> > PIL']
>
> You need to export the environment variable.
>
>   export PYTHONPATH
>
> Graham

Thanks all - I'm recently back to using Unix (Mac) after 5 years of
being on a PC.  I guess I thought export was just another way of doing
assignment.  My bad.

--Mike



From harivasantha at gmail.com  Sat Oct  6 02:15:33 2007
From: harivasantha at gmail.com (harina)
Date: Fri, 05 Oct 2007 23:15:33 -0700
Subject: Paid Surveys - Make Money Online From Free Paid Surveys
Message-ID: <1191651333.562529.302240@k79g2000hse.googlegroups.com>

Paid Surveys - Make Money Online From Free Paid Surveys

Welcome to Internet Paid Surveys. Here we review the best online paid
survey sites that pay you for your opinions. We feature only tried and
tested paid survey companies that are really worth joining and have
good reputation. Our database is frequently updated and is absolutely
FREE. You never have to pay firms like surveyscout to join survey
sites. Anyone who asks money in return for a database of paid survey
companies are only cheating you. Go through our list of free paid
surveys and join them without spending a cent.

Paid surveys are a great work from home opportunity to make some extra
money in your spare time. Internet surveys are fun. At the same time,
you help in the development of new products. Market research companies
are interested in knowing your opinion on various matters on behalf of
their clients. They are willing to pay you for the time you spend for
them. Most of the reputed paid survey sites are online divisions of
market research companies. They are all free to join and give rewards
ranging from $1 to $100 or more per survey completed. Some paid survey
sites enter you into sweepstakes where you can earn more money. Others
may reward you with points which can be later redeemed for cash.

http://surveyss.blogspot.com/



From kyosohma at gmail.com  Wed Oct 24 09:02:42 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 24 Oct 2007 13:02:42 -0000
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <1193230962.271873.104900@v29g2000prd.googlegroups.com>

On Oct 24, 7:09 am, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this code
>
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
>
> I think there is a better way, but I can't see how...

You might look into list comprehensions. You could probably do this
with two of them:

<code>
# completely untested
lMandatory = [arg for arg in cls.dArguments if arg is True]
lOptional  = [arg for arg in cls.dArguments if arg is False]
</code>

Something like that. I'm not the best with list comprehensions, so I
may have the syntax just slightly off. See the following links for
more information:

http://www.secnetix.de/olli/Python/list_comprehensions.hawk
http://docs.python.org/tut/node7.html

Mike



From rcdailey at gmail.com  Thu Oct  4 16:25:00 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 4 Oct 2007 15:25:00 -0500
Subject: RegEx question
In-Reply-To: <47054853.1050301@tim.thechases.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
	<50af02ed0710041248i15823f88gd6b404353ba7d472@mail.gmail.com>
	<47054785.5020705@tim.thechases.com>
	<47054853.1050301@tim.thechases.com>
Message-ID: <496954360710041325p3a305144i6a843a25e8332f45@mail.gmail.com>

I am not a regex expert, I simply assumed regex was standardized to follow
specific guidelines. I also made the assumption that this was a good place
to pose the question since regular expressions are a feature of Python. The
question concerned regular expressions in general, not really the
application. However, now that I know that regex can be different, I'll try
to contact the author directly to find out the dialect and then find the
appropriate location for my question from there. I do appreciate everyone's
help. I've tried the various suggestions offered here, however none of them
work. I can only assume at this point that this regex is drastically
different or the application reading the regex is just broken.

Thanks again for everyones help!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/7116b28e/attachment.html>

From rcdailey at gmail.com  Wed Oct 10 23:24:32 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 22:24:32 -0500
Subject: How to "dereference" an iterator?
In-Reply-To: <13gr3jhgkvvahbf@corp.supernews.com>
References: <496954360710101601s5cc774dby16f01ba532ef096e@mail.gmail.com>
	<mailman.54.1192059622.927.python-list@python.org>
	<13gr3jhgkvvahbf@corp.supernews.com>
Message-ID: <496954360710102024i1e00dc3ei2372b003f402143b@mail.gmail.com>

Hi,

I suppose my question in general is goofy to native python programmers. I'm
originally a C++ programmer and I have a hard time not relating iterators in
python to iterators in STL lol. What I was actually trying to accomplish was
to iterate over 2 iterators using 1 for loop, however I found that the zip()
function allows me to do this quite easily:

list1 = [1,2,3]
list2 = [4,5,6]

for i1,i2 in zip( list1, list2 ):
    # do something here...

In one of my earlier threads in this group someone had ended up using zip().
After reviewing that thread again I found that I could also use it to solve
this problem as well. Sorry for lack of details. Thanks for everyone's help.

On 10/10/07, Steven D'Aprano <steve at remove-this-cybersource.com.au> wrote:
>
> The original post seems to have been eaten, so I'm replying via a reply.
> Sorry for breaking threading.
>
> > On Wed, 2007-10-10 at 18:01 -0500, Robert Dailey wrote:
> >> Hi,
> >>
> >> Suppose I wanted to manually iterate over a container, for example:
> >>
> >> mylist = [1,2,3,4,5,6]
> >>
> >> it = iter(mylist)
> >> while True:
> >>     print it
> >>     it.next()
> >>
> >> In the example above, the print doesn't print the VALUE that the
> >> iterator currently represents, it prints the iterator itself. How can I
> >> get the value 'it' represents so I can either modify that value or
> >> print it? Thanks.
>
> it = iter(mylist)
> while True:
>     print it.next()
>
> but that will eventually end with an exception. Better to let Python
> handle that for you:
>
> it = iter(mylist)
> for current in it:
>     print current
>
> Actually, since mylist is already iterable, you could just do this:
>
> for current in mylist:
>     print current
>
> but you probably know that already.
>
>
> --
> Steven.
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/70f2995e/attachment.html>

From besturk at gmail.com  Sun Oct  7 05:27:23 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 07 Oct 2007 02:27:23 -0700
Subject: configure urllib.urlretrieve timeout
Message-ID: <1191749243.553918.235330@o80g2000hse.googlegroups.com>

Hi..
I want to set 30 second urllib.urlretrieve timeout..
Because if urllib.urlretrieve can't connect to page wait 1-2 hour...
I download the images to my server with urlretrieve if you know the
better way please help me.

I'm sorry my bad english..



From jgodoy at gmail.com  Sat Oct  6 07:13:03 2007
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 06 Oct 2007 08:13:03 -0300
Subject: Segmentation fault..
References: <1191668481.171014.54840@57g2000hsv.googlegroups.com>
Message-ID: <f67kt4-v7q.ln1@strongwill.g2ctech>

Abandoned wrote:

> Hi..
> I run a my script and 3-4 minutes later give me an error "segmentation
> fault".
> What is the reason of this error ?
> 
> I use in my script:
> Threading
> Psycopg2
> open & write to txt
> urlopen
> 
> My platform is ubuntu linux.
> 
> I'm sorry my bad english.
> King regards..

Without seeing any code, it is hard to say anything.  But the answer to the
ultimate question is "42".

Show the group some code and I'm sure people will help.


From lorna.burns at gmail.com  Mon Oct 22 08:54:36 2007
From: lorna.burns at gmail.com (Py-Fun)
Date: Mon, 22 Oct 2007 05:54:36 -0700
Subject: Iteration for Factorials
In-Reply-To: <oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
Message-ID: <1193057676.680959.71780@v23g2000prn.googlegroups.com>

On 22 Oct, 13:43, Marco Mariani <ma... at sferacarta.com> wrote:
> Py-Fun wrote:
> > def itforfact(n):
> >     while n<100:
> >         print n
> >         n+1
> > n = input("Please enter a number below 100")
>
> You function should probably return something. After that, you can see
> what happens with the result you get.

Marco, Thanks for the tip.  This now works:

def itforfact(n):
    while n<100:
        print n
        n = n+1
n = input("Please enter a number below 100")

itforfact(n)

Is it a "factorial" though?



From alexandre.badez at gmail.com  Mon Oct 15 05:05:24 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Mon, 15 Oct 2007 09:05:24 -0000
Subject: pydev code completion problem
In-Reply-To: <fetrk3$l27$3@nemesis.news.tpi.pl>
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
Message-ID: <1192439124.856433.285480@e9g2000prf.googlegroups.com>

On Oct 14, 9:45 pm, Lukasz Mierzejewski <lmier... at o2.pl> wrote:
> Hi, I need help with pydev code completion...
>
> Let's assume that we have something like this:
>
> class One:
>         def fun(self):
>         return 1
>
> class Two:
>         li = []
>         li.append(One())
>
>         one = li[0]
>         print one.fun()
>
>         one2 = li.pop()
>         print one2.fun()
>
>         one3 = One()
>         print one3.fun()
>
> Only for 'one3' variable code completion is working fine (as expected it
> show fun()).
> For 'one' code completion shows something (but not fun()).
> For 'one2' code completion shows nothing :-(
>
> I use Eclipse 3.3.1 with PyDev 1.3.9 on Ubuntu 7.04.
>
> Can anyone confirm or deny this behavior of PyDev?

It would be very great if a solution like this could exist, but it
can't at all, because python is very dynamic.
Not like in other languages like C, C++ or Java, in python if you use
a list, you do not have to declare what the list hold, it can contains
everything. Moreover, it can contains different sort of object that
may have nothing in common.

Has you have seen, this imply a "problem": python or an IDE can't
predict until runtime what it have to manipulate.

NOTA: this is true for everything in python, even for functions
You could easily do something like this:

class my_empty_object(object):
    pass

# We create an empty object (without any method)
meo = my_empty_object()

# We create something like a method
def f(string):
    print string

#We add it to the object
meo.func = f

#Now we call it
meo.func('it works!')

>>> it works!



From fetchinson at googlemail.com  Sat Oct 13 06:01:18 2007
From: fetchinson at googlemail.com (Daniel Fetchinson)
Date: Sat, 13 Oct 2007 12:01:18 +0200
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
Message-ID: <fbe2e2100710130301q45de068mab9e32b1e6eccf8a@mail.gmail.com>

> Hello everybody,
>
> I just joined this mailing list. Thanks for your comments about gluon.
>
> I have posted a short video about it and I am planning to make more
> over the week-end.
>
> http://www.youtube.com/watch?v=VBjja6N6IYk
>
> About some of your comments:
> - the most complex modules (like html and sql ones) have doctests.
> - the executable versions (win and mac) come with python2.5. Running
> from source code does not require 2.5 but you probably want sqlite3.
> - so far I support sqlite3 and postgresql, not mysql (just because I
> do not use it and had no time for testing it).
> - yes, there are typos in the documentation. Please point them out to
> me so that I can fix them.
> - I am sure there are some minor bugs I am not aware of but as far I
> tested, it work.
> - If you report bugs to me I promise to fix them in 48hrs.
> - please make sure you have the latest version.
>
> I very much appreciate comments about gluon (good and bad). Please
> send me more so that I can improve it.
>
> There will be two talks in chicago about gluon next week: at DePaul
> Linux Users Group on Thursday evening and at the Chicago Linux Users
> Group on Saturday afternoon. I will try record them and post them.
>
> Massimo
>
> P.S. Michele Simionato. I have heard your name before? Is it possible
> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
> and there is not many of us.


Hi Massimo,

In what way is gluon different from existing frameworks most notably
django and turbogears? What do you think are the advantages to using
gluon over these two?

Cheers,
Daniel


From larry.bates at websafe.com  Wed Oct 10 21:08:19 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 10 Oct 2007 20:08:19 -0500
Subject: Keeping track of subclasses and instances?
In-Reply-To: <fejpo9$vm$1@news1.carnet.hr>
References: <fejpo9$vm$1@news1.carnet.hr>
Message-ID: <t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>

Karlo Lozovina wrote:
> Hi,
> 
> what's the best way to keep track of user-made subclasses, and instances of
> those subclasses? I just need a pointer in a right direction... thanks.
> 
I'm not completely sure I understand the question but here goes.  Instances of 
classes are classes can be stored in lists or dictionaries.  In lists you 
reference them via their index (or iterate over them) and in dictionaries you 
can give them a name that is used as a key.

Hope this helps.

-Larry


From deets at nospam.web.de  Mon Oct  8 10:07:36 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 16:07:36 +0200
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com>
	<13gk96sks58ad9f@corp.supernews.com>
	<5muoroFfdr86U2@mid.uni-berlin.de>
	<13gkc07l4ce47ea@corp.supernews.com>
Message-ID: <5murtaFfa8p9U1@mid.uni-berlin.de>

Steven D'Aprano wrote:

> On Mon, 08 Oct 2007 15:15:36 +0200, Diez B. Roggisch wrote:
> 
>>> Well, I've read the thread, and I've read the thread it links to, and
>>> for the life of me I'm still no clearer as to why __slots__ shouldn't
>>> be used except that:
>>> 
>>> 1 Aahz and Guido say __slots__ are teh suxxor;
>>> 
>>> 2 rumour (?) has it that __slots__ won't make it into Python 3.0;
>>> 
>>> 3 inheritance from classes using __slots__ doesn't inherit the slot-
>>> nature of the superclass.
>>> 
>>> 
>>> Point 1 is never to be lightly dismissed, but on the other hand Guido
>>> doesn't like reduce(), and I'm allergic to "Cos I Said So" arguments.
>>> 
>>> History is full of things which were invented for one purpose being
>>> used for something else. So, that being the case, suppose I accept that
>>> using __slots__ is not the best way of solving the problem, and that
>>> people of the skill and experience of Guido and Aahz will roll their
>>> eyes and snicker at me.
>>> 
>>> But is there actually anything *harmful* that can happen if I use
>>> __slots__?
>> 
>> Point 3 clearly is harmful.
> 
> No, it is DIFFERENT, not harmful. At worst, it's a "gotcha" -- a really
> well-documented gotcha.

To the casual observer? I doubt it. I wasn't aware of that until a recent
discussion about slots. But then, I've so far _never_ felt the need to  use
them...
 
> 
>> As is the fact that __slots__ gives you
>> troubles if you e.g. pass objects to code that tries to set arbitrary
>> attributes on an object.
> 
> You mean like this?
> 
>>>> x = 1
>>>> x.label = "foo"
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'int' object has no attribute 'label'
> 
> I guess that means ints and floats and strings and tuples and lists are
> all harmful too, yes?

You are very well aware that I was talking about complex objects. And I
didn't say that they are harmful, but that using __slots__ to constrain
object attribute will lead to surprising results here in comparison to
the "usual" behavior. And with usual I mean
most-of-the-classes-work-that-way. Which might be considered as reason to
_not_ do it. But you are free to limit yourself, be my guest.

>> The question is: what does a slot buy you for this kind of problem?
> 
> Simplicity and explicitness.

Where is that more simple? Additional notation that will lead to
runtime-errors, the same way misspelled attribute-names do?

And yes, it is more explicit. As are interfaces, and type declarations. 

Diez


From macoafi at gmail.com  Tue Oct 23 14:34:09 2007
From: macoafi at gmail.com (maco)
Date: Tue, 23 Oct 2007 18:34:09 -0000
Subject: Cross-platform GUI development
In-Reply-To: <mailman.158.1192250064.927.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<mailman.158.1192250064.927.python-list@python.org>
Message-ID: <1193164449.831675.200600@i38g2000prf.googlegroups.com>

On Oct 13, 12:34 am, Michael L Torrie <torr... at chem.byu.edu> wrote:
> Alexandre Badez wrote:
> > Personnaly, I use PyQt simply because I prefere Qt to Gtk, witch is
> > much more integrated with all desktop than Gtk.
> > In fact, your application in Qt on Mac, Win or Linux look like a
> > native app.
>
> Qt doesn't look very native on my desktop.  In fact, Qt apps have always
> looked out of place on a Gnome desktop.
>
> On Windows and Mac, no question, they look pretty native.  You do have
> to take pains to make the app "feel" native, though.  Like follow the UI
> guidelines of the platform,  etc.
>
>
>
> > Just a question of "feeling" I think; because most of those GUI
> > framework, offer quiet the same functionality.

GTK (like Pidgin or the GIMP) looks pretty native on Windows to me.
Years of using Windows is probably why I think GTK/GNOME looks better
than Qt/KDE.



From hniksic at xemacs.org  Wed Oct 10 11:41:43 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 10 Oct 2007 17:41:43 +0200
Subject: unpickle from URL problem
References: <vSZOi.5979$rD1.4849@trnddc01>
Message-ID: <873awjgeo8.fsf@mulj.homelinux.net>

Alan Isaac <aisaac at american.edu> writes:

> I upload to a server.
> I try to unpickle from the URL.  No luck.  Try it:
> x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example1'))
>
> I change the filetype to unix.  I upload again.
> I try to unpickle from the URL.  Now it works.  Try it:
> x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example2'))
>
> Why the difference?

The first upload breaks the file.  You uploaded it in (presumably
FTP's) text mode, which changes \n -> \r\n.  But you download it using
http, which specifies no such conversion in the opposite direction.

It is true that the lowest pickle protocol is textual in nature, but
it just means that you can open a file in text mode, write the pickle
into the file, and reliably read it back on the same platform.  The
newlines will be converted to the platform newline representation
(such as \r\n on Windows or \r on Mac) upon write, and back to the
original single-byte (\n) representation upon read.  But if you feed
the unpickler a string that already contains \r\n, there is nothing to
convert it back to \n.


From ciprian.craciun at gmail.com  Mon Oct 15 04:38:33 2007
From: ciprian.craciun at gmail.com (Ciprian Dorin Craciun)
Date: Mon, 15 Oct 2007 11:38:33 +0300
Subject: Simple HTML template engine?
In-Reply-To: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <8e04b5820710150138l583fc0e4r946e0dfa46a1ea68@mail.gmail.com>

    Have you tried CherryPy? http://www.cherrypy.org/

    It's not a template engine, but a simple web server engine, and
you could code your conditionals and loops directly in Python... When
I have tried it, it looked very nice and easy.

    Ciprian.


On 10/15/07, allen.fowler <allen.fowler at yahoo.com> wrote:
> Hello,
>
> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
>
> No need for caching, template compilation, etc.
>
> Speed is not a major issue.
>
> I just need looping and conditionals. Template inheritance would be a
> bonus.
>
> I've seen Genshi and Cheetah, but they seem way too complex.
>
> Any ideas?
>
> I'm sure I could build something myself, but I'm sure this has already
> been done quite a few times.  Why re-invent the wheel, right?
>
>
> Thank you,
> Allen


From DustanGroups at gmail.com  Sat Oct 27 07:17:18 2007
From: DustanGroups at gmail.com (Dustan)
Date: Sat, 27 Oct 2007 11:17:18 -0000
Subject: simple question on dictionary usage
In-Reply-To: <1193465795.788600.126180@50g2000hsm.googlegroups.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<1193464703.330534.279080@22g2000hsm.googlegroups.com>
	<1193464958.063849.106890@z9g2000hsf.googlegroups.com>
	<1193465795.788600.126180@50g2000hsm.googlegroups.com>
Message-ID: <1193483838.052600.20360@z24g2000prh.googlegroups.com>

On Oct 27, 1:16 am, Frank Millman <fr... at chagford.com> wrote:
> On Oct 27, 8:02 am, Frank Millman <fr... at chagford.com> wrote:
>
> > > This should work -
>
> > > egt = dict([i for i in d.items() if i[0].startswith('E')])
>
> > Of course I meant record.items(), not d.items(). Sorry.
>
> > Frank
>
> On reflection, although my solution is a bit shorter than some others,
> it may not be as efficient, as it retrieves the key and value for
> *every* entry in 'record' before testing whether the key begins with
> 'E'.

That can be fixed by using record.iteritems() instead of
record.items().

> If the dictionary is large, this may be a consideration.
>
> Frank




From deets at nospam.web.de  Sun Oct  7 11:54:36 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 07 Oct 2007 17:54:36 +0200
Subject: ANN: Pyrex 0.9.6
In-Reply-To: <mailman.1642.1191764237.2658.python-list@python.org>
References: <mailman.1631.1191754836.2658.python-announce-list@python.org>
	<mailman.1642.1191764237.2658.python-list@python.org>
Message-ID: <5msdpsFf5b87U1@mid.uni-berlin.de>

Colin J. Williams schrieb:
> Greg Ewing wrote:
>> Pyrex 0.9.6 is now available:
>>
>>    http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/
>>
>> There is a *lot* of new stuff in this version, too much
>> to fit into this announcement. Read all about it here:
>>
>>    
>> http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/changes-0.9.6.html 
>>
>>
>> What is Pyrex?
>> --------------
>>
>> Pyrex is a language for writing Python extension modules.
>> It lets you freely mix operations on Python and C data, with
>> all Python reference counting and error checking handled
>> automatically.
> Some of the doc\Manual files seem to be missing eg source_files.
> 
> I was browsing hoping to find an answer to the question "Do I
> need a C compiler to use Pyrex, if so, which one?

Can't say that anything about the reason for the missing files - but one 
thing is for sure: you need one. And I _presume_ it's the one distutils 
would chose, so it depends on your python-build.

Diez


From timaranz at gmail.com  Thu Oct 11 17:42:56 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Thu, 11 Oct 2007 14:42:56 -0700
Subject: decorating container types (Python 2.4)
Message-ID: <1192138976.165419.25820@19g2000hsx.googlegroups.com>

Hi,

I have a container class A and I want to add functionality to it by
using a decorator class B, as follows:

class A(object):
    def __len__(self):
        return 5

class B(object):
    def __init__(self, a):
        self._a = a

    def __getattr__(self, attr):
        return getattr(self._a, attr)

    def other_methods(self):
        blah blah blah

I was expecting len(B) to return 5 but I get
AttributeError: type object 'B' has no attribute '__len__'
instead.
I was expecting len() to call B.__len__() which would invoke
B.__getattr__ to call A.__len__ but __getattr__ is not being called.
I can work around this, but I am curious if anyone knows _why_
__getattr__ is not being called in this situation.

Thanks
Tim



From bj_666 at gmx.net  Tue Oct  9 12:59:59 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 9 Oct 2007 16:59:59 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
Message-ID: <5n1qcfFf0dahU1@mid.uni-berlin.de>

On Tue, 09 Oct 2007 09:16:12 -0700, minkoo.seo at gmail.com wrote:

> I've got a question on the differences and how to define static and
> class variables.

First you have to define what you mean by "static".

> AFAIK, class methods are the ones which receives the
> class itself as an argument, while static methods are the one which
> runs statically with the defining class.

`classmethod`\s receive the class as first arguments, `staticmethod`\s are
just functions bound to the class object.

> Hence, my understanding is that static variables must be bound to the
> class defining the variables and shared by children of parent class
> where the variable is defined. But, please have a look at this code in
> which a guy told me that the variable a is static:

Ask the guy what he means by "static".

>>>> class Foo:
> 	a = 1
> 	@classmethod
> 	def increment(cls):
> 		cls.a += 1
> 		print cls.a
> 
> Here, I am defining variable a which, I believe is class variable,
> i.e., variable that is not bound to Foo itself.

No you define a class attribute that *is* bound to the class `Foo`.

> Rather, a is bound to the class which is accessing the variable. The code
> that corroborates this idea is as follows:
> 
>>>> class Child1(Foo):
> 	pass
> 
>>>> Child1.increment()
> 4

Four!?  Hard to believe.

>>>> class Child2(Foo):
> 	pass
> 
>>>> Child2.increment()
> 4
> 
> This means that Child1 and Child2 does not share variable a which means
> that variable a is class variable rather than static variable.
> 
> Could you please comment on this? Is a static or class variable? What's
> the most recent way of defining 'class' and 'static' variables?

There is no such thing as a "static" variable.  Think of attributes that
are bound to objects.  All dynamically.

What happens is: you bind a 1 to the attribute `Foo.a` in the `Foo` class
definition.

When you call `Child1.increment()` the class method will be called with
`Child1` as first argument.  Now ``cls.a += 1`` is executed which is
somewhat like a short form of ``cls.a = cls.a + 1``.  So this is reading
the attribute `a` from `Child1` and then bind the result to `Child1`. 
`Child1` doesn't have an attribute `a`, so it is looked up in the parent
class.  But the result is then bound to `Child1`.  So you are reading from
`Foo` and writing to `Child1`.  That's it.

Ciao,
	Marc 'BlackJack' Rintsch


From gagsl-py2 at yahoo.com.ar  Sun Oct 21 13:31:27 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 21 Oct 2007 14:31:27 -0300
Subject: errors while building a program with Python
References: <1192985563.490275.269130@q5g2000prf.googlegroups.com>
Message-ID: <op.t0j5mpd9x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sun, 21 Oct 2007 13:52:43 -0300, <jeffstatin at yahoo.com> escribi?:

> I'm trying to build a program (MixMinion) with Python 2.5.1, MSVS 2003
> SP1 and Windows XP Home SP2 but I'm getting a couple of errors.
>
> Here are the two errors I am getting:
> (1) .\contrib\OpenSSL\lib\Builder5\ssleay32.lib : fatal error LNK1136:
> invalid or corrupt file

Ensure that your downloaded files are not corrupt. You could try to  
download and compile OpenSSL yourself but this may be a bit tricky; I  
think it would be a lot better to ask this directly on the MixMinion dev  
list.

-- 
Gabriel Genellina



From mail at timgolden.me.uk  Fri Oct 12 04:26:44 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 12 Oct 2007 09:26:44 +0100
Subject: Script to Remove Attachments in Exchange Mailbox
In-Reply-To: <1192118025.085938.283610@19g2000hsx.googlegroups.com>
References: <1192110265.529187.48770@y42g2000hsy.googlegroups.com>	<mailman.85.1192114940.927.python-list@python.org>
	<1192118025.085938.283610@19g2000hsx.googlegroups.com>
Message-ID: <470F2FC4.8020908@timgolden.me.uk>

[KDawg44]

>>> I am frustrated with my users who send large files around the office
>>> instead of using the network shares.

[Tim Golden]
>> I have something v. similar, ...
>> It's a while since they were last run to they're probably quite
>> dusty but it sounds like the kind of thing you're after.

Well, here's[1] the first part -- running through folders and replacing
big attachments with links. Now I look, it's designed to be run by
a user on his/her own mailbox rather than by an administrator. Naturally
it's got some stuff which is specific to my setup but nothing, I think,
which isn't easily understood and adapted or removed.

One note is that, as it says in the comments, there doesn't seem to
be a way of identifying large attachments as such, only large messages.
So there may be some corner case where an attachment is stripped out
which is in fact quite small. Obviously you could adapt the
process_attachment function to do something fancier than it is based
on the saved file size etc.

There are no dependencies outside the stdlib except, of course, the
pywin32 package. (Which is, for me, part of the stdlib whenever I
install on Windows). Feel free to email me privately or on-list if
you wish if there's anything which isn't clear etc.

TJG

[1] http://timgolden.me.uk/python/downloads/strip_attachments.py



From nbaker2328 at charter.net  Thu Oct  4 21:36:40 2007
From: nbaker2328 at charter.net (Evenbit)
Date: Thu, 04 Oct 2007 18:36:40 -0700
Subject: Announcing the RosAsm Library Project
In-Reply-To: <1191536947.116741.32130@g4g2000hsf.googlegroups.com>
References: <1191536947.116741.32130@g4g2000hsf.googlegroups.com>
Message-ID: <1191548200.284561.102430@w3g2000hsg.googlegroups.com>

On Oct 4, 6:29 pm, "rh... at cs.ucr.edu" <rh... at cs.ucr.edu> wrote:
> Hey, Rene,
>
> Let's pretend for a moment that we're all on "Planet Betov" where
> using statically linked library code is never done and all code reuse
> is accomplished by "cut & paste".
>
> In this dream world, here's what I see:
>
> MASM: People can cut and past code from the MASM32 Library source
> code.
> FASM: People can cut and past code from the FASMLIB source code.
> NASM: People can cut and past code from the ASMLIB source code
> HLA: People can cut and past code from the HLA Standard Library.
>
> RosAsm: ????
>
> Even if we "level the playing field" and don't allow static linking of
> libraries, as all these other assemblers support, where exactly is the
> "RosAsm Library"?  (Or snippets, or templates, or whatever else you
> want to call it.)
>

This is extremely easy to answer.  The average RosAsm coder tends to
only make use of the libraries documented here:

http://msdn2.microsoft.com/en-us/library/aa383749.aspx

If you wish to revue the source code, then bring that issue up with
Microsoft.  Please let us know of any positive results.  ;)

If a programmer feels that a project requires him to use a large
amount of pre-written "library" code and advanced programming features/
tools, then he must seriously question why he is using assembly
language (rather than a High-Level Language) in the first place.
After a programmer has made the choice to code at the ASM level, he
has already -- by default/definition -- decided to avoid the trappings
of the HLL world.

You are indeed one pecular person.  On the one hand [ http://www.artofasm.com
], you have taught, written a book, built an advanced assembler, and
generally answer many questions about assembly language.  However, on
the other hand, you spend a great deal of time here in alt.lang.asm
denigrating assembler tools and "bashing" those who write assembly
language.

So, the question is [this goes also for all those regular a.l.a
trolls]:  Are you here to _support_ the *assembly language*
community?  Or, are you here to encourage everyone to "give up" on ASM
and adopt an easy HLL instead?

Nathan.



From akraemer at sbcglobal.net  Thu Oct 11 12:27:37 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Thu, 11 Oct 2007 16:27:37 -0000
Subject: storing meta data on dictionary keys
In-Reply-To: <1192084587.386653.325480@22g2000hsm.googlegroups.com>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
	<mailman.66.1192075270.927.python-list@python.org>
	<1192084587.386653.325480@22g2000hsm.googlegroups.com>
Message-ID: <1192120057.393274.215110@g4g2000hsf.googlegroups.com>

> > [...]                        In fact, now that I think of it, get_key
> > is probably a bad name for it, get_other_object_with_this_same_key is
> > probably more apt :)
>
> Or more precise:
> get_key_that_was_used_when_value_was_inserted_into_dictionary :-)

Or even more precisely:

get_key_object_that_was_used_when_the_initial_value_belonging_to_that_key_was_inserted_into_dictionary

since rebinding other values to the stored key won't change it:

class Str(str):
  def __repr__(self):
    return str(self)+': '+self.tag

>>> a = Str('foo')
>>> a.tag = "I'm the first one!"
>>> b = Str('foo')
>>> b.tag = "I'm not."
>>> d = {}
>>> d[a] = 'bar'
>>> d[b] = 'spam'
>>> d.items()[0]
(foo: I'm the first one!, 'spam')




From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 15:18:21 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 20:18:21 +0100
Subject: A class question
In-Reply-To: <mailman.601.1193690719.13605.python-list@python.org>
References: <mailman.567.1193646908.13605.python-list@python.org>	<87ejfe457k.fsf@mulj.homelinux.net>
	<mailman.601.1193690719.13605.python-list@python.org>
Message-ID: <472783a9$0$6951$426a74cc@news.free.fr>

Donn Ingle a ?crit :
>>vzcbeg vafcrpg
>>
>>qrs _svaq(senzr, bow):
>>    sbe anzr, inyhr va senzr.s_ybpnyf.vgrevgrzf():
>>        vs inyhr vf bow:
>>            erghea anzr
>>    sbe anzr, inyhr va senzr.s_tybonyf.vgrevgrzf():
>>        vs inyhr vf bow:
>>            erghea anzr
>>    envfr XrlReebe("Bowrpg abg sbhaq va senzr tybonyf be ybpnyf")
>>
>>pynff K:
>>    qrs qroht(frys):
>>        cevag ("Pnyyre fgberf zr va %f (nzbat bgure cbffvoyr cynprf)"
>>               % _svaq(vafcrpg.pheeragsenzr(1), frys))
> 
> 
> Now that's taking i18n too far. Klingon is not a widely understood
> language :D

s/i18n/rot13/ !-)


From bignose+hates-spam at benfinney.id.au  Fri Oct 12 21:01:53 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 13 Oct 2007 11:01:53 +1000
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
Message-ID: <87odf3969q.fsf@benfinney.id.au>

Florian Lindner <Florian.Lindner at xgm.de> writes:

> is there a function in the Python stdlib to test if a string is a
> valid email address?

Not to my knowledge.

Florian Lindner <Florian.Lindner at xgm.de> writes:

> I was just asking for the correct syntax of the mail address.

Well, you weren't actually (I can't interpret your question above in
this way), but to answer this new question, read RFC 3696 ?3:

    RFC 3696: Application Techniques for Checking and Transformation of Names
    <URL:http://www.ietf.org/rfc/rfc3696.txt>

> I know about the various problems actually impossibility to test for
> a live and valid address.

As you'll see from the above, the only thing you can check for
"validity" is the domain. The local-part can consist of *any*
printable ASCII characters, including "@" and any other punctuation.
Only the final delivery host gets to say whether it's valid or not.

-- 
 \      "Saying that Java is nice because it works on all OSes is like |
  `\    saying that anal sex is nice because it works on all genders"  |
_o__)                                              -- http://bash.org/ |
Ben Finney


From johnmasters at oxtedonline.net  Fri Oct  5 16:45:57 2007
From: johnmasters at oxtedonline.net (John Masters)
Date: Fri, 5 Oct 2007 20:45:57 +0000
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <47069e40$0$16410$426a74cc@news.free.fr>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
	<mailman.1586.1191596681.2658.python-list@python.org>
	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
	<47069e40$0$16410$426a74cc@news.free.fr>
Message-ID: <20071005204557.GA13456@oxtedonline.net>

On 04:12 Thu 04 Oct     , Bruno Desthuilliers wrote:
> J. Clifford Dyer a ?crit :
> > On Fri, Oct 05, 2007 at 04:11:07PM -0000, Grant Edwards wrote
> > regarding Re: Python Magazine: Issue 1 Free!:
> > 
> >> On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:
> >> 
> >>>>> I've just been told by the editors at Python Magazine that
> >>>>> the first issue is out.
> >>>> 
> >>>> The first issue is issue number 10?
> >>>> 
> >>>> That's a bit silly.
> >>> 

The first issue is actually 2007-10 which makes a lot of sense

Regards, john


From kyosohma at gmail.com  Fri Oct 12 09:32:49 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 12 Oct 2007 13:32:49 -0000
Subject: problem with wxPanel derivation class
In-Reply-To: <mailman.112.1192136520.927.python-list@python.org>
References: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
	<mailman.112.1192136520.927.python-list@python.org>
Message-ID: <1192195969.487030.308160@v23g2000prn.googlegroups.com>

On Oct 11, 4:01 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/11/07, <"@bag.python.org <"none> wrote:> wxGlade created a simple Frame with a panel a sizer and 3 wxControls ,
> > saticText, TextCtrl, and a Button.
>
> <snip>
>
> > It seems as though the complaint is that  a 'wxWindow *' is expected,
> > 'Panel' is received
> > However, Panel IS a wx.Panel derivative which IS a wx.Window derivative!
> > Additionally, the methods in the code of Panel and MyFrameOne seem to be
> > identical.
> > I can't understand this. Anyone have any thoughts?
>
> It's because you didn't call the base class __init__. wxPython is a
> SWIG wrapper around the C++ wxWidgets library, and if you don't call
> the base class the SWIG infrastructure that maps your class to an
> underlying C++ class doesn't happen and you get this error.

Ah-so. I knew there was a more technical answer than what I gave.
Hopefully I didn't muddy the issue with my doofy code.

Mike



From sandy.dunlop at gmail.com  Wed Oct 24 15:45:26 2007
From: sandy.dunlop at gmail.com (Sandy Dunlop)
Date: Wed, 24 Oct 2007 20:45:26 +0100
Subject: Socket communication problem
References: <471FA039.2080206@gmail.com>
Message-ID: <471FA0D6.3080007@gmail.com>

Sandy Dunlop wrote:

> Hi,
> I'm new here, and fairly new to Python. I have been playing around with
> Python and started having a look at socket IO. I have written a script
> that communicates over a network to a server which is written in C.
> While trying to get this working, I have been running into a problem
> where the Python client appears to hang when it should be receiving data
> back from the server.


I forgot to add, I'm using Python 2.5.1 on OS X, and have also tried my 
program under Python 2.5.1 on Solaris 9.


Cheers,
Sandy



From tjreedy at udel.edu  Mon Oct  8 23:31:51 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 8 Oct 2007 23:31:51 -0400
Subject: Memory leak/gc.get_objects()/Improved gc in version 2.5
References: <1191890643.412806.121180@r29g2000hsg.googlegroups.com>
Message-ID: <feesn7$t76$1@sea.gmane.org>


<crazy420fingers at gmail.com> wrote in message 
news:1191890643.412806.121180 at r29g2000hsg.googlegroups.com...

Questions like this about memory consumption should start with the 
information printed by the interactive interpreter on startup and 
additional info about whether the binary is from stock CPython or has 3rd 
party modules compiled in.  The latter are typically the source of real 
problems. 





From mail at gedankenkonstrukt.de  Tue Oct 16 06:08:44 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Tue, 16 Oct 2007 12:08:44 +0200
Subject: Automatically organize module imports
In-Reply-To: <1192522106.394705.29570@v23g2000prn.googlegroups.com>
References: <mailman.34.1192475606.13605.python-list@python.org>
	<ff1n3q$bl5$1@newsreader2.netcologne.de>
	<1192522106.394705.29570@v23g2000prn.googlegroups.com>
Message-ID: <ff22jc$48p$1@newsreader2.netcologne.de>

Alexandre Badez:
> If you're using Eclipse + PyDev, I strongly recommend you to give a
> try to PyLint ("http://www.logilab.org/857").

Great. It has a warning about unused imports. Perfect.
(Though, it was a bit tricky to install as easy_install didn't get the
dependencies right on Win XP)

Thank you!
-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From ricaraoz at gmail.com  Wed Oct 31 12:40:14 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Wed, 31 Oct 2007 13:40:14 -0300
Subject: Need some help...
In-Reply-To: <47271907$1_6@news.bluewin.ch>
References: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
	<47271907$1_6@news.bluewin.ch>
Message-ID: <4728AFEE.9080802@bigfoot.com>

Boris Borcic wrote:
> hyozan.ux3 at gmail.com wrote:
>> I want to create a program that I type in a word.
>>
>> for example...
>>
>> chaos
>>
>> each letter equals a number....
>>
>> A=1
>> B=20
>>
>>  and so on.
>>
>> So Chaos would be
>>
>> C=13 H=4 A=1 O=7 S=5
>>
>> I want to then have those numbers
>> 13+4+1+7+5 added together to be 30.
>>
>> How can I do that?
>>
>> Also, just curious, but, how could I then have the 3 and 0 added
>> together to be 3?
>>
>> Please help me out.
>>
>> Thank you.....
>>
> 
>  >>> sum(dict(C=13,H=4,A=1,O=7,S=5)[_] for _ in 'CHAOS')
> 30
>  >>> sum(eval(ch) for ch in str(_))
> 3


>>> def sumToOneDigit(num) :
	if num < 10 :
		return num
	else :
		return sumToOneDigit(sum(int(i) for i in str(num)))

	
>>> sumToOneDigit(sum(ord(ch) for ch in 'chaos'.upper()))
6



HTH







From erik at myemma.com  Thu Oct 11 16:42:01 2007
From: erik at myemma.com (Erik Jones)
Date: Thu, 11 Oct 2007 15:42:01 -0500
Subject: storing meta data on dictionary keys
In-Reply-To: <1192130749.719935.147650@57g2000hsv.googlegroups.com>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
	<mailman.66.1192075270.927.python-list@python.org>
	<1192084587.386653.325480@22g2000hsm.googlegroups.com>
	<mailman.97.1192123085.927.python-list@python.org>
	<1192130749.719935.147650@57g2000hsv.googlegroups.com>
Message-ID: <DA34E9BA-0B85-439A-9002-AB408419E0AB@myemma.com>

On Oct 11, 2007, at 2:25 PM, Andreas Kraemer wrote:

> On Oct 11, 10:17 am, Erik Jones <e... at myemma.com> wrote:
>
>> No, duck typing and inheritance are two different things.  Duck
>> typing is when you implement the same operations as another object or
>> class, whereas with inheritance you get the same implementation as
>> that of the parent class.
>
> Except when you override a method ...

Right.  But, that's specialization which is still part of the  
inheritance model, and not duck typing, since you're also inheriting  
state.  Duck typing is about implementing an interface and has  
nothing to do with state.  Put another way, with inheritance you're  
getting both behaviour and state, with duck typing you're mimicking  
behaviour.

>
>> With duck typing, an object "acts like"
>> another object in specific contexts.
>
> That's exactly what Str(str) does in the context dictionary look-
> up ...

No, in that case Str "is-a" str, it doesn't have to act like a str  
because it is one, whereas with my Node example, Node "acts-like" a  
str (or int or any other hashable).  Read the first sentence of the  
Wikipedia article on duck typing: http://en.wikipedia.org/wiki/ 
Duck_typing

>> With inheritance, an object is
>> the same general type as another object.  You don't want string
>> objects, you want objects that, in a specific case, act like strings
>> but in others, I'm sure, not.  How does a concept like string
>> substitution fit with your inherited objects?
>
> Since Str(str) inherits all methods of str, those methods that return
> other strings (always new objects since str is immutable) like e.g.
> replace() will return str and not Str(str), and don't have the meta
> data copied. Which may be a bug or a feature  ...:-)
>
> I think the subtle difference here lies between the definition of
> inheritance and duck-typing, and how both are typically used in
> practice ...

Right, here you're wanting to implement your Node as a specialization  
of str in order to get only some of it's behaviour.  But the  
abstractions of a graph node and string don't mix with some of str's  
other behaviour.  To me this is obtuse:

 >>> class Node(str): pass
...
 >>> n = Node('funky %s')
 >>> n.children = [Node('child1'), Node('child2')]
 >>> print n % 'yes
funky yes

Duck typing is what you're looking for and is specifically not  
inheritance.

I'd like to note that my entire argument has been based on the  
semantics of inheritance v. duck typing.  I'm not saying what you're  
doing won't work, just that when I see someone inherit from str I  
expect a str-like object in intention, it being hashable should be  
incidental to that.  This example is sufficiently small and simple  
that if you do choose inheritance you're not likely to get bitten.   
But, once you get in the habit of breaking abstractions like this you  
open yourself up for a world of hurt in other scenarios.

Another thing to think about is that the only thing you have to gain  
with piggy backing str like this is saving three lines of typing, 4  
lines to implement __hash__ and __eq__ v. 1 line to inherit from str.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From sjmachin at lexicon.net  Fri Oct 12 19:50:52 2007
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 12 Oct 2007 16:50:52 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <1192203158.119872.305750@e34g2000pro.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
	<1192195158.203063.143920@e9g2000prf.googlegroups.com>
	<1192203158.119872.305750@e34g2000pro.googlegroups.com>
Message-ID: <1192233052.289140.227040@v29g2000prd.googlegroups.com>

On Oct 13, 4:32 am, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 12, 8:19 am, John Machin <sjmac... at lexicon.net> wrote:
>
> > "... most of the developed world" was the [very optimistic] request.
> > How does it go with "JAPAN 112-0001 TOKYO Bunkyo-Ku Hakusan 4-Chome 3-
> > 2" and will it give the same result for "4-3-2 HAKUSAN BUNKYO-KU TOKYO
> > 112-00001 JAPAN"? OK, a little exotic ... closer to "home", what about
> > addresses in Quebec? People often write addresses in formats that you
> > won't find on the postal service website, but the local postal workers
> > will still deliver. Rural addresses can be quaintly medieval e.g. "Lot
> > 123, Hundred of Foughbarre" [South Australia]. Etc etc ...
>
> John -
>
> As I'm sure you already know, the answer is "not too well".

Yup.

> In the spectrum of tools from string.split, to re, to pyparsing and
> its ilk, to natural language toolkits, the broader the scope of your
> "address space", the further you find your self moving toward NLTK.

Yup. Each different postal jurisdiction has its own official language
for addresses, and for each official language there are regional etc
dialects and slang and ...

> I
> knew my pyparsing script wasn't in the "anywhere in the developed
> world" category, that's why I posted the test cases, too.

Test cases which presume the OP's assumption that the street address
is available separately (or that the locality, state, and zipcode have
miraculously been parsed out already) and that the country is the USA.

In real world databases that I've come across, data flows across field
boundaries so freely that one just has to give up on individual fields
and work on something like ' '.join([street1, street2, locality,
state, zipcode, country]). With luck, the country will have been
filled in with a (fuzzily-)recognisable country name/code/
abbreviation ... otherwise it's off to a country_guessing module.
Quick quiz question: which 3 postal jurisdictions have a state/
province/region abbreviated to "NT"?

You could even be cleaning up after a butcher who thought he was
cleaning up, creating locality/country combinations like this:

CHADSTONE -> STONE/CHAD
COROMANDEL VALLEY -> CORDEL VALLEY/OMAN
PRINCE OF WALES HOSPITAL -> PRINCE OF  HOSPITAL/WALES

>
> If you've got an re that can handle everything from "123 Main" to
> "221B Baker Street" to "Hollywood and Vine" to "Lot 123, Hundred of
> Foughbarre", now THAT would be something.

Of course "an re" can't possibly handle everything for postal
addresses.  See Friedl's attempt to provide an re to match all
possible e-mail addresses -- a somewhat more restricted domain than
postal addresses.



From snorble at hotmail.com  Tue Oct  2 08:59:15 2007
From: snorble at hotmail.com (snorble at hotmail.com)
Date: Tue, 02 Oct 2007 05:59:15 -0700
Subject: Inheriting from int or long
Message-ID: <1191329955.229829.259130@22g2000hsm.googlegroups.com>

I started creating a simple "bits" class, intended to act like a array
of bits. This was my initial idea, basically just overriding the
string representation to display the bitmask (so far):

class bits(long):
    def __str__ (self):
        s = ''
        if self == 0L:
            s += '-'
        else:
            x = self
            while x >= 1:
                if x & 1L: s = '#' + s
                else:      s = '-' + s
                x >>= 1
        return s

My thought was this will act like a Long, and so should act like an
array of bits with arbitrary precision, supporting the standard
bitwise operations, along with others I may add.

>>> import bits
>>> b = bits.bits(32)
>>> b
32L
>>> print b
#-----
>>> b = bits.bits(35)
>>> print b
#---##
>>> b = bits.bits(36)
>>> print b
#--#--
>>> b <<= 1
>>> print b
72

So obviously when I attempt a bitwise operation (ex. b <<= 1), b is
being assigned the result of b << 1, which is a Long.

>>> b = bits.bits(36)
>>> type(b)
<class 'bits.bits'>
>>> type (b << 1)
<type 'long'>

Is there any way around this without reimplementing all of the bitwise
operators? It's not the biggest deal to reimplement the operators, but
it kind of defeats the benefit of inheriting from an integer type.

If there isn't a way around this, then I am curious in what situations
it would be beneficial to inherit from an int or long. This issue
seems more related to numeric types, since they are so centered around
operations that involve assignment, as opposed to, say, a List, which
has some operators (ex. +=), but does not depend on them (ex. use
append() instead).



From smarras at bsc.es  Fri Oct 12 08:59:51 2007
From: smarras at bsc.es (smarras at bsc.es)
Date: Fri, 12 Oct 2007 14:59:51 +0200 (CEST)
Subject: Traceback (most recent call last): PROBLEM
Message-ID: <44692.192.168.6.2.1192193991.squirrel@webmail.bsc.es>

Hello everyone, I keep obtaining an error message whenever I execute some
very simple routines; the error that follows says that I am calling
certain functions that, in reality, I am not calling from any of the
routines that I wrote:

error:

> python fwrite_mat.py

  0, 0, 0, 0 ,  0, 1, 2, 3 ,  0, 2, 4, 6
Traceback (most recent call last):
  File "fwrite_mat.py", line 7, in <module>
    from xlrd import *
  File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/xlrd/__init__.py",
line 256, in <module>
    from timemachine import *
  File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/xlrd/timemachine.py",
line 21, in <module>
    from array import array as array_array
ImportError: cannot import name array

In these lines that I pasted, for example the "array-looking" string has
nothing to do with my function, nor the import name "timemachine" or the
import name "array".

Can anyone help me understand why python is looking such libraries, and
why it keeps in memory an array that I am not using?

Here also the simple routine I wrote:

import os, sys
import xlrd
from numpy import *
from Numeric import *
from matplotlib import *

book = xlrd.open_workbook("/Users/simone/Desktop/prova.xls")
print "The number of worksheets is", book.nsheets
print "Worksheet name(s):", book.sheet_names()
sh = book.sheet_by_index(0)
print sh.name, sh.nrows, sh.ncols
for i in range(sh.nrows):
	for j in range(sh.ncols):
		print sh.row(i)
		print sh.cell_value(i, j)



From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 20 01:05:16 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 20 Oct 2007 05:05:16 -0000
Subject: how to iterate over sequence and non-sequence ?
References: <mailman.201.1192778546.13605.python-list@python.org>
	<1192779222.618164.321910@y27g2000pre.googlegroups.com>
	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>
	<13hhicd14jrt5e3@corp.supernews.com>
	<mailman.220.1192811880.13605.python-list@python.org>
Message-ID: <13hj34cgdvkdc80@corp.supernews.com>

On Fri, 19 Oct 2007 18:38:06 +0200, stef mientki wrote:

> I don't have pointers, I've just names (at least I think). Let me
> explain a little bit more,
> I want to simulate / debug a user program, the user program might look
> like this:
> 
>    x = 5
>    for i in xrange(10):
>        x = x + 1


I thought you were writing a JAL interpreter:

http://en.wikipedia.org/wiki/JAL_(compiler)

but the code above is Python.



> So now I want to follow the changes in "x" and "i", therefor in the
> background I change the user program a little bit, like this
> 
> def user_program():
>    x = 5    ; _debug(2)
>    global x,i
>    _debug (3)
>    for i in xrange(10):
>        _debug (3)
>        x = x + 1    ; _debug (4)
> 
> And this modified user program is now called by the main program. Now in
> the _debug procedure I can set breakpoints and watch x and i. 

Python already has a debugger. Try this:

import pdb
help(pdb)



-- 
Steven.


From duncan.booth at invalid.invalid  Wed Oct 31 08:08:52 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 31 Oct 2007 12:08:52 GMT
Subject: setting variables in outer functions
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
	<Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
	<1193830119.542006.137750@o38g2000hse.googlegroups.com>
Message-ID: <Xns99DA7B469B79Fduncanbooth@127.0.0.1>

Dustan <DustanGroups at gmail.com> wrote:

> On Oct 30, 11:29 am, Duncan Booth <duncan.bo... at invalid.invalid>
> wrote:
>> Neil Cerutti <horp... at yahoo.com> wrote:
>> > It's allows a standard programming idiom which provides a
>> > primitive form of object oriented programming using closures to
>> > represent state.
>>
>> > def account(opening_balance):
>> >   balance = opening_balance
>> >   def get_balance():
>> >     nonlocal balance
>> >     return balance
>> >   def post_transaction(x):
>> >     nonlocal balance
>> >     balance += x
>> >   return balance, post_transaction
>>
>> > fred_balance, fred_post = account(1500)
>> > joe_balance, joe_post = account(12)
>> > fred_post(20)
>> > joe_post(-10)
>> > fred_balance()
>>
>> TypeError: 'int' object is not callable
>>
>> > 1520
>> > joe_balance()
>>
>> TypeError: 'int' object is not callable
>>
>> > 2
>>
>> > Python classes will of course nearly always win, though the idiom
>> > looks like it might be faster (I don't have Python 3000 to try it
>> > out).
>>
>> Python classes might be less error prone.
> 
> Why would using classes make your code any less prone to typographical
> errors?
> 
> 
Lots of reasons: shorter and clearer code being high on the list. The 
class equivalent would be:


>>> class Account(object):
   def __init__(self, opening_balance):
       self.balance = opening_balance

   def post_transaction(self, x):
    	self.balance += x

    	
>>> fred = Account(1500)
>>> joe = Account(12)
>>> fred.post_transaction(20)
>>> joe.post_transaction(-10)
>>> fred.balance
1520
>>> joe.balance
2

There is no scope for the particular error I highlighted: you no longer 
have the duplication of declaring the functions and then returning them.
Also you don't need the accessor function at all (and if at some point 
in the future you do want it you can make it a property).

You don't have to invent separate names for each of the returned 
functions: the dot notation suddenly makes that a no brainer.

Also the class is easier to extend: you no longer have to find and 
change every call to account() if you want to add another method: just 
add it.

BTW, I put both the original code with corrections, and the class 
version into a file and timed them running with Python 3 alpha 1, the 
nested scope version is slightly faster: 5.03usec per loop against 
5.77usec for the class version, but minor changes to the code can skew 
the result either way (put in more attribute accesses and the class 
wins, add in more method calls and the function wins).


From george.sakkis at gmail.com  Thu Oct 11 19:04:27 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 11 Oct 2007 23:04:27 -0000
Subject: Declarative properties
In-Reply-To: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
Message-ID: <1192143867.686910.210320@t8g2000prg.googlegroups.com>

On Oct 11, 7:48 am, Artur Siekielski <artur.siekiel... at gmail.com>
wrote:

> I know about 'property' function in Python, but it's normal usage
> isn't declarative, because I have to code imperatively getters and
> setters:
>
> class Person(object):
>    def __init__(self, name):
>       self._name = name
>    def _get_name(self):
>       return self._name
>    def _set_name(self, new_name):
>       self._name = new_name
>    name = property(_get_name, _set_name)
>
> I would like to have something like that:
>
> class Person(object):
>    name = property('_name')

By now you must have been convinced that default getters/setters is
not a very useful idea in Python but this does not mean you can't do
it; it's actually straightforward:

def make_property(attr):
    return property(lambda self: getattr(self,attr),
                    lambda self, value: setattr(self, attr, value))

class Person(object):
   name = make_property('_name')
   def __init__(self, name):
       self.name = name

You could take it even further by removing the need to repeat the
attribute's name twice. Currently this can done only through
metaclasses but in the future a class decorator would be even better:

def PropertyMaker(*names, **kwds):
    format = kwds.get('format', '_%s')
    def meta(cls,bases,attrdict):
        for name in names:
            attrdict[name] = make_property(format % name)
        return type(cls,bases,attrdict)
    return meta

class Person(object):
    __metaclass__ = PropertyMaker('name', format='__%s__')

    def __init__(self, name):
        self.name = name
        print self.__name__


George



From deets at nospam.web.de  Sat Oct 20 12:28:31 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 20 Oct 2007 18:28:31 +0200
Subject: Dealing with "funny" characters
In-Reply-To: <LlpSi.6020$y21.124@newssvr19.news.prodigy.net>
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
	<mailman.259.1192890437.13605.python-list@python.org>
	<LlpSi.6020$y21.124@newssvr19.news.prodigy.net>
Message-ID: <5nuolqFk13gcU1@mid.uni-berlin.de>

>    No, no, that's wrong.  MySQL and the Python interface to it understand
> Unicode.  You don't want to convert data to UTF-8 before putting it in a
> database; the database indexing won't work.

I doubt that indexing has anything to do with it whatsoever.

>    Here's how to do it right.
> 
>    First, tell MySQL, before you create your MySQL tables, that the 
> tables are
> to be stored in Unicode:
> 
>     ALTER database yourdatabasename DEFAULT CHARACTER SET utf8;
> 
> You can also do this on a table by table basis, or even for single fields,
> but you'll probably get confused if you do.
> 
>    Then, when you connect to the database in Python, use something like 
> this:
> 
>     db = MySQLdb.connect(host="localhost",
>         use_unicode = True, charset = "utf8",
>         user=username, passwd=password, db=database)
> 
> That tells MySQLdb to talk to the database in Unicode, and it tells the 
> database
> (via "charset") that you're talking Unicode.

You confuse unicode with utf-8 here. And while this appears to be 
nitpicking, it is important to write this small program and meditate the 
better part of an hour in front of it running:

while True:
     print "utf-8 is not unicode"


You continue to make that error below, so I snip that.

The important part is this: unicode is a standard that aims to provide a 
codepoint for each and every character that humankind has invented. And 
python unicode objects can also represent all characters one can imagine.

However, unicode as such is an abstraction. Harddisks, network sockets, 
databases and the like don't deal with abstractions though - the eat 
bytes. Which makes it necessary to encode unicode objects to 
byte-strings when serializing them. Thus there are the thingies called 
encodings: latin1 for most characters used in westen europe for example. 
But it is limited to 256 characters (actually, even less), chinese or 
russian customers won't get too happy with them.

So some encodings are defined that are capable of encoding _ALL_ unicode 
codepoints. Either by being larger than one byte for each character. Or 
by providing escape-mechanisms. The former are e.g. UCS4 (4 bytes per 
character), the most important member of the latter is utf-8. Which uses 
ascii + escapes to encode all codepoints.

Now what does that mean in python?

First of all, the coding:-declaration: it tells python which encoding to 
use when dealing with unicode-literals, which are the

u"something"

thingies. If you use a coding of latin1, that means that the text

u"?"

is expected to be one byte long, with the proper value that depicts the 
german umlaut o in latin1. Which is 0xf6.

If coding: is set to utf-8, the same string has to consist not of one, 
but of two bytes: 0xc3 0xb6.

So, when editing files that are supposed to contain "funny" characters, 
you have to

  - set your editor to save the file in an appropriate encoding

  - specify the same encoding in the coding:-declaration

Regarding databases: they store bytes. Mostly. Some allow to store 
unicode by means of one of the fixed-size-encodings, but you pay a 
storage-size penalty for that.

So - you we're right when you said that one can change the encoding a db 
uses, on several levels even.

But that's not all that is to it. Another thing is the encoding the 
CONNECTION expects byte-strings to be passed, and will use to render 
returned strings in. The conversion from and to the used storage 
encoding is done automagically.

It is for example perfectly legal (and unfortunately happens 
involuntarily) to have a database that internally uses utf-8 as storage, 
potentially being able to store all possible codepoints.

But due to e.g. environmental settings, opened connections will deliver 
the contents in e.g. latin1. Which of course will lead to problems if 
you try to return data from the table with the topmost chines first names.

So you can alter the encoding the connection delivers and expects 
byte-strings in. In mysql, this can be done explcit using

cursor.execute("set names <encoding>")

Or - as you said - as part of a connection-string.

db = MySQLdb.connect(host="localhost",
         use_unicode = True, charset = "utf8",
         user=username, passwd=password, db=database)


But there is more to it. If the DB-API supports it, then the API itself 
will decode the returned strings, using the specified encoding, so that 
the user will only deal with "real" unicode-objects, greatly reducing 
the risk of mixing byte-strings with unicode-objects. That's what the 
use_unicod-parameter is for: it makes the API accept and deliver 
unicod-objects. But it would do so even if the charset-parameter was 
"latin1". Which makes me repeat the lesson from the beginning:

while True:
     print "utf-8 is not unicode"


Diez


From fredrik.johansson at gmail.com  Sun Oct 28 17:50:10 2007
From: fredrik.johansson at gmail.com (Fredrik Johansson)
Date: Sun, 28 Oct 2007 22:50:10 +0100
Subject: Going past the float size limits?
Message-ID: <3d0cebfb0710281450t3bf181b0i89a472e4bac3fe51@mail.gmail.com>

jimmy.musselwhite at gmail.com wrote:
> Hello all
> It would be great if I could make a number that can go beyond current
> size limitations. Is there any sort of external library that can have
> infinitely huge numbers? Way way way way beyond say 5x10^350 or
> whatever it is?

> I'm hitting that "inf" boundary rather fast and I can't seem to work
> around it.

> Thanks!

mpmath (http://code.google.com/p/mpmath/) supports nearly unlimited
exponents (as large as fit in your computer's memory); much larger
than gmpy. It is also essentially compatible with regular floats with
respect to rounding, function support, etc, if you need that.

Fredrik


From wdraxinger at darkstargames.de  Tue Oct 30 06:22:27 2007
From: wdraxinger at darkstargames.de (Wolfgang Draxinger)
Date: Tue, 30 Oct 2007 11:22:27 +0100
Subject: How python writes text into another windows application
References: <mailman.608.1193694836.13605.python-list@python.org>
Message-ID: <38djv4-kp9.ln1@darkstargames.dnsalias.net>

Meitham wrote:

> My question is, how do I write the data into another
> application fields. My target application is the TNT
> consignment manager. I asked TNT for their API to make my life
> easier but they refused to release it :(.

You know what the word "market" means? Just tell TNT, that it
seems they don't need you as a customer and so you will change
to another parcel service.

I had the very same situation with a regional parcel service a
few years ago, you won't believe how quick they were in
providing me with API information, in the prospect of loosing a
valuable customer (the fact that you want to automatize the
process suggests, that you have a lot of stuff to be delivered).

If they still don't bite, just show them a calculation, that it's
cheaper for you, to choose another parcel service that might
cost more, but you can save that money with the automatized data
entry.

Of course it's possible to send keypresses, mouse moves/clicks
and other messages to another application, but then you _MUST_
make sure, that no other application or a user interferes in the
process, and if an update of the software changes the interface
you have to reimplement the stuff from grounds up.

Wolfgang Draxinger
-- 
E-Mail address works, Jabber: hexarith at jabber.org, ICQ: 134682867



From tenax.raccoon at gmail.com  Wed Oct 17 15:57:32 2007
From: tenax.raccoon at gmail.com (Jason)
Date: 17 Oct 2007 12:57:32 -0700
Subject: Can you determine the sign of the polar form of a complex number?
In-Reply-To: <1192629071.834342.243370@i38g2000prf.googlegroups.com>
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
	<1192629071.834342.243370@i38g2000prf.googlegroups.com>
Message-ID: <1192636416.478296.13340@e9g2000prf.googlegroups.com>

On Oct 17, 7:51 am, schaefer... at gmail.com wrote:
> Just to clarify what I'm after:
>
> If you plot (-3)^n where n is a set of negative real numbers between 0
> and -20 for example, then you get a discontinuos line due to the
> problem mentioned above with fractional exponents. However, you can
> compute what the correct absolute value of the the missing points
> should be (see z2 above for an example), but I would like to know how
> to determine what the correct sign of z2 should be so that it fits the
> graph.

As Roy said, a math newsgroup may be able to help you better, as you
seem to be having fundamental issues with imaginary numbers.  The
imaginary part isn't an artifact of computing (-3+0j)**(-4.5), it is
an integral part of the answer.  Without the imaginary part, the
result is very, very incorrect.

Actually, the graph result of (-3)^n is not necessarily discontinuous
at the intervals you specified.  You just need to graph the result
with the proper number of dimensions.  If you want to plot the results
of (-3)^n for n=0 to -20, you need to make a three dimensional graph,
a two dimensional graph with two sets of lines, or a circular graph
with labeled values of n.

Complex numbers can be viewed as having a magnitude and a rotation in
the real/imaginary plane.  This is called polar form.  Complex numbers
can also be represented using a Cartesian form, which is how Python
displays complex numbers.

Python's complex numbers allow you to extract the real or imaginary
part separately, via the "real" and "imag" attributes.  To convert to
polar form, you'll need to use the abs built-in to retrieve the
magnitude, and math.atan2 to retrieve the angle.  (Remember that the
imaginary part is considered the Y-axis component.)

Depending on what you're doing, you might need the real part or the
magnitude.  It sounds a little bit like you're trying to represent
something as a flatlander when you should be in Spaceland.  (http://
en.wikipedia.org/wiki/Flatland)

  --Jason



From mensanator at aol.com  Tue Oct  2 00:59:35 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 01 Oct 2007 21:59:35 -0700
Subject: Using fractions instead of floats
In-Reply-To: <1191287823.018676.35640@o80g2000hse.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
Message-ID: <1191301175.225114.283340@50g2000hsm.googlegroups.com>

On Oct 1, 8:17?pm, richy... at gmail.com wrote:
> On Oct 1, 9:03 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>
> > On Oct 1, 7:20 pm, richy... at gmail.com wrote:
>
> > > On Oct 1, 8:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
>
> > > >   >>> mpq(1,3)+0.6
> > > >   mpq(14,15)
>
> > > Golly!  That's quite impressive.  And more than a little bit magic as
> > > well, since 0.6 is definitely not the same as 3/5.  
>
> > It's not? Since when?
>
> The 0.6 above is a floating point number, mathematically very close to
> 0.6 but definitely not equal to it, since 0.6 can't be represented
> exactly as a float.

Oh, you mean something like this, right?

>>> import gmpy
>>> a = 0.6
>>> a
0.59999999999999998

So, the rational should have 59999999999999998
in the neumerator and 100000000000000000 in the
denominator? But it doesn't

>>> b = gmpy.mpq(a)
>>> b
mpq(3,5)

Why do you suppose that is? For that matter, why
does

>>> str(a)
'0.6'

give me an EXACT representation? Didn't you just
say it couldn't be represented exactly?

Which is correct,

>>> str(a)
'0.6'

or

>>> repr(a)
'0.59999999999999998'

?

How does gmpy make the conversion from float to rational?



From george.sakkis at gmail.com  Wed Oct 31 09:14:41 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 31 Oct 2007 13:14:41 -0000
Subject: A Python 3000 Question
In-Reply-To: <slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
Message-ID: <1193836481.203103.111400@22g2000hsm.googlegroups.com>

On Oct 31, 8:44 am, Neil Cerutti <horp... at yahoo.com> wrote:
> On 2007-10-30, George Sakkis <george.sak... at gmail.com> wrote:
>
>
>
> > On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
> >> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>
> >> > This is a FAQ:
> >> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-function...
>
> >> Holy Airy Persiflage Batman!
>
> >> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
> >> win32
> >> Type "help", "copyright", "credits" or "license" for more information.>>> import timeit
> >> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
> >> 0.20332271187463391
> >> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>
> >> 0.48545737364457864
>
> > Common mistake; try this instead:
>
> > timeit.Timer('seqlen()',
> >              'seq = range(100); seqlen=seq.__len__').timeit()
>
> Why would I want to do that?


To realize that __len__ is actually faster than len in this case; your
second timing is dominated by the time to do attribute lookup.


George



From simon at brunningonline.net  Thu Oct 11 10:26:40 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Thu, 11 Oct 2007 15:26:40 +0100
Subject: EasyMock for python ?
In-Reply-To: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
Message-ID: <8c7f10c60710110726w44989e25xed46c8ff5935fd08@mail.gmail.com>

On 10/10/07, BlueBird <phil at freehackers.org> wrote:
> Does anybody know where to find a library like EasyMock for python ? I
> searched quickly but could not find anything.
>
> I found python-mocks on sourceforge but form quickly reading the docs,
> it is not an EasyMock style mock. Actually, according to
> http://martinfowler.com/articles/mocksArentStubs.html I don't think it
> is even a mock library. More a stub.

python-mock is more jMock than EasyMock in style, it's true, and the
fact that you define expectations *after* the test invocation rather
than before does feel a bit odd. But it does indeed check against the
defined expectations, so that makes it a mock library in my book.

A record-playback EasyMock style mock library would be nice, it's true...

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From mensanator at aol.com  Tue Oct 23 13:25:16 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 23 Oct 2007 10:25:16 -0700
Subject: Iteration for Factorials
In-Reply-To: <1193140736.924933.217960@v23g2000prn.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193083810.302605.128630@y27g2000pre.googlegroups.com>
	<877ileq40i.fsf@rudin.co.uk>
	<1193089188.812952.241920@v29g2000prd.googlegroups.com>
	<1193140736.924933.217960@v23g2000prn.googlegroups.com>
Message-ID: <1193160316.036974.315620@t8g2000prg.googlegroups.com>

On Oct 23, 6:58 am, tokl... at gmail.com wrote:
> On 22 oct, 23:39, "mensana... at aol.com" <mensana... at aol.com> wrote:
>
> > Nope, still doesn't work:
>
> > def fact(x):
> >         return reduce(operator.mul,xrange(1,x+1),1)
>
> > fact() should raise an exception if x is negative.
>
> So, where is the problem?

The fact that it returns 1 for negative x?

And didn't you see my followup message? About how the
example, as posted, doesn't even produce correct answers
for legal values of x?

> if not allowing negative numbers is so
> important for you,

Mathematical consistency is only important to _me_?

> add a if statement and raise a ValueError exception.

Not necessary when done correctly. Didn't you see my example?




From bblais at bryant.edu  Sun Oct 21 12:36:46 2007
From: bblais at bryant.edu (Brian Blais)
Date: Sun, 21 Oct 2007 12:36:46 -0400
Subject: compiler module bug? 
Message-ID: <7DEB606B-7856-4140-ADA9-4083EC22D380@bryant.edu>

Hello,

I am experiencing a problem with the compiler module.  Is this a bug,  
or am I doing something wrong?

so I have the following code:

from compiler import parse, parseFile

filename='blah.py'

if False:  # turn this to false, to get it to work
     ast = parse(open(filename).read())   # this line gives a syntax  
error
else:
     ast = parseFile(filename)  # this line works


print ast


the documentation, here http://docs.python.org/lib/module- 
compiler.html  says that the two lines with parse and parseFile are  
equivalent.

the file I am trying to parse is simply:

def main():

     a=10

     # comment at the end of the file




it seems like a comment at the end breaks the parse command, but not  
parseFile.  Is this reproducible by others?

am I doing something wrong?

		thanks,

			Brian Blais



-- 
Brian Blais
bblais at bryant.edu
http://web.bryant.edu/~bblais



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/4a2ae09f/attachment.html>

From mensanator at aol.com  Wed Oct 24 19:04:04 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Wed, 24 Oct 2007 16:04:04 -0700
Subject: Iteration for Factorials
In-Reply-To: <1193264370.786983.242180@y27g2000pre.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
	<mailman.336.1193075066.13605.python-list@python.org>
	<1193264370.786983.242180@y27g2000pre.googlegroups.com>
Message-ID: <1193267044.931367.147940@z24g2000prh.googlegroups.com>

On Oct 24, 5:19 pm, marek.ro... at wp.pl wrote:
> Tim Golden napisa (a):
>
> > It's only a moment before the metaclass and
> > the Twisted solution come along. :)
>
> I couldn't resist. It's not as elegant as I hoped, but hey, at least
> it memoizes the intermediate classes :-)
>
> class fact_0(object):
>         value = 1
>
> class fact_meta(object):
>         def __new__(cls, name, bases, attrs):
>                 n = attrs['n']
>                 class_name = 'fact_%i' % n
>                 try:
>                         return globals()[class_name]
>                 except KeyError:
>                         new_class = type(class_name, bases, {})
>                         new_class.value = n * fact(n - 1).value
>                         new_class.__str__ = lambda self: str(self.value)
>                         globals()[class_name] = new_class
>                         return new_class
>
> class fact(object):
>         def __new__(self, n_):
>                 class spanish_inquisition(object):
>                         __metaclass__ = fact_meta
>                         n = n_
>                 return spanish_inquisition()
>
> print fact(5)
> print fact(3)
> print fact(1)

Dare I add fact(0)?

120
6
1
<__main__.fact_0 object at 0x011729F0>

Hmm..not sure what that means, but I bet I can't calculate
combinations.

What about fact(-1)?

120
6
1
<__main__.fact_0 object at 0x011729F0>

Traceback (most recent call last):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 31, in <module>
    print fact(-1)
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 21, in __new__
    class spanish_inquisition(object):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 13, in __new__
    new_class.value = n * fact(n - 1).value
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 21, in __new__
    class spanish_inquisition(object):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 13, in __new__
    new_class.value = n * fact(n - 1).value
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 21, in __new__
    class spanish_inquisition(object):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 13, in __new__
    new_class.value = n * fact(n - 1).value
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 21, in __new__
    class spanish_inquisition(object):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 13, in __new__
    new_class.value = n * fact(n - 1).value
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 21, in __new__
    class spanish_inquisition(object):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 13, in __new__
    new_class.value = n * fact(n - 1).value
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 21, in __new__
    class spanish_inquisition(object):
  File "C:/Program Files/PyGTK/Python/user/yet_another_factorial.py",
line 13, i

Wow! An infinite loop in the Traceback. Not quite the exception
I was looking for.



From exarkun at divmod.com  Tue Oct 30 18:46:30 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 30 Oct 2007 17:46:30 -0500
Subject: Is there a usenet library for Python?
In-Reply-To: <sbOVi.346015$6L.210871@fe03.news.easynews.com>
Message-ID: <20071030224630.8162.897140282.divmod.quotient.29826@ohm>

On Tue, 30 Oct 2007 22:25:28 GMT, Just Another Victim of the Ambient Morality <ihatespam at hotmail.com> wrote:
>    Is there a Python library to communicate with a usenet server?  I did a
>bit of googling and found some sites that suggest that you can roll your own
>fairly easily but, mostly, I got a lot of false positives with talk of
>Python libraries on usenet and I am really hoping this work has already
>done.
>    Thank you...

Twisted News includes an NNTP implementation.

http://twistedmatrix.com/trac/wiki/TwistedNews

http://twistedmatrix.com/documents/current/api/twisted.news.nntp.NNTPClient.html

Jean-Paul


From user at example.net  Tue Oct 23 00:34:14 2007
From: user at example.net (J.O. Aho)
Date: Tue, 23 Oct 2007 06:34:14 +0200
Subject: Python - why don't this script work?
In-Reply-To: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
Message-ID: <5o5bu7Fks244U1@mid.individual.net>

Ohmster wrote:
> Here is my output when I try to run it on my Fedora 6 machine:
> [ohmster at ohmster bench]$ image-harvester.py 
> http://public.fotki.com/DaGennelman/
> /home/ohmster/scripts/image-harvester.py: line 59: from: command not found

Check line 59 in the python script and you see which command you are missing.
I bet you didn't read what it said on the page
http://web.mit.edu/pgbovine/www/image-harvester.htm

Install the programs that mentioned on the page before you use the python script.



-- 

  //Aho


From rmnet at mailc.net  Tue Oct 23 08:47:40 2007
From: rmnet at mailc.net (Rene Maurer)
Date: Tue, 23 Oct 2007 14:47:40 +0200
Subject: pure python data compression (zip)
Message-ID: <87wsteknf7.fsf@querer.allevents.ch>

Hallo

I wonder if there are any pure python implementations available/known
for the zip (or any other) data compression... As far as I know
python's zlib uses http://www.zlib.net/, which is written in
C. Unfortunately this is not solution for me, because my target "only"
has a python interpreter....

I have "googled" for a while, but I don't have found anything useful.

Regards,
Ren?


From tommy.nordgren at comhem.se  Sat Oct 13 23:26:38 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Sun, 14 Oct 2007 05:26:38 +0200
Subject: Python on imac
In-Reply-To: <8ocQi.24253$054.21605@newsfe14.phx>
References: <8ocQi.24253$054.21605@newsfe14.phx>
Message-ID: <49EA84E1-7B86-47E2-818E-FAAABB7C2308@comhem.se>


On 14 okt 2007, at 01.21, John Velman wrote:

> I'm considering moving from Linux to imac.   I've recently returned to
> Python (was never very expert) to develop a small gui application.  At
> present I plan to use PyGTK with Pango and Cairo.
>
> What surprises may I be in for :-)
>
> (Currently using slackware 11.0 on an old (8 years) slow (400mhz)  
> machine.)
>
> Thanks,
>
> John Velman
> -- 
> http://mail.python.org/mailman/listinfo/python-list
	Mac OS X Tiger comes with Python 2.3 installed.
Installers for later versions are available at www.python.org
No need to use package managers
----------------------------------
Skinheads are so tired of immigration, that they are going to move to  
a country that don't accept immigrants!
Tommy Nordgren
tommy.nordgren at comhem.se





From pavlovevidence at gmail.com  Mon Oct  1 05:49:27 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Mon, 01 Oct 2007 02:49:27 -0700
Subject: PyOpenGL without SetupTools
In-Reply-To: <1191225893.485450.325090@50g2000hsm.googlegroups.com>
References: <1191225893.485450.325090@50g2000hsm.googlegroups.com>
Message-ID: <1191232167.092377.153010@k79g2000hse.googlegroups.com>

On Oct 1, 4:04 am, seb.ha... at gmail.com wrote:
> Hi,
> I am distributing a package with a precompiled collection of modules
> and packages useful for Python based medical/biological/astronomical
> image analysis and algorithm development. (Codename: Priithon).
> For Priithon I put all modules/packages in a simple / single directory
> (tree) including one starting batch/script file. This script sets up
> PYTHONPATH to find modules at this place.
> It works fine for Windows,Linux and Mac-OSX.
>
> Now I want to upgrade everything to Python 2.5  and thought it might
> be time get PyOpengl version 3 (aka. pyOpengl-ctypes).
>
> The problem at hand is now that PyOpenGL  uses "all this setup-tools
> machinery" just to initialize the formathandlers for the different
> ways to deal with arrays. (I really need only numpy support !)
> This is done via the pkg_resources mechanism called "entry_points".
>
> Can I include a simple non-system-install of pkg_resources that makes
> at least the entry_point stuff work ?  Where do I put pyOpenGL's
> "entry_points.txt"  file ?


The simple answer is "don't bother with PyOpenGL-ctypes if you don't
have to".  Besides the hassles with binary packaging, it's quite a bit
slower then PyOpenGL 2.0.

Anyways, when I saw that I couldn't easily figure out how to register
a setuptools package by hand (the point you seem to be at now), I
resorted to using the same hack that setuptools uses to register its
packages.  Setuptools puts a pth file, something like
"ezsetup_XXXX.pth", in the site-packages directory.  The file has a
couple lines of Python code that mark the start and end of the eggs on
sys.path; then they call setuptools to postprocess and register the
eggs.

What I did was to duplicate the effect of these lines in my main
script.  I don't have it in front of me, but it was something along
these lines:

    sys.__eggindex = len(sys.path)
    sys.path.append("OpenGL-cytpes-3.0.0a7-whatever.egg")
    setuptools.register_packages()

I copied the OpenGL egg to my distro directory, and it worked.

Another possibility is to do it the "setuptools" way: by not packaging
PyOpenGL 3.0 at all, and instead marking it as a dependency.  Then,
setuptools will helpfully download it for the user.  (Personally, I
hate that scripts can recklessly download and install stuff into your
site packages without even asking; seems like a possible security hole
as well.)  But it's an option.



Carl Banks



From bj_666 at gmx.net  Thu Oct 11 08:22:02 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 12:22:02 GMT
Subject: gdbm troubles.
References: <1192103345.052824.166450@y42g2000hsy.googlegroups.com>
Message-ID: <5n6iraFghr61U3@mid.uni-berlin.de>

On Thu, 11 Oct 2007 11:49:05 +0000, Shriphani wrote:

> dictionary = gdbm.open('dictionary','c')
> dictionary['Ellipsize'] = 'Openbox'
> dictionary.get('Ellipsize')
> 
> the last line generates an attribute error. Can someone tell me what I
> am doing wrong?

You are trying to use a method that does not exist.  That `gdbm` object
doesn't have a `get()` method.

Ciao,
	Marc 'BlackJack' Rintsch


From jcd at sdf.lonestar.org  Mon Oct  1 10:11:56 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 1 Oct 2007 10:11:56 -0400
Subject: Select as dictionary...
In-Reply-To: <4700fb42$0$18288$426a74cc@news.free.fr>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
Message-ID: <20071001141156.GB12995@sdf.lonestar.org>

On Mon, Oct 01, 2007 at 03:50:59PM +0200, Bruno Desthuilliers wrote regarding Re: Select as dictionary...:
> 
> IIRC, postgres' db-api connector (well, at least one of them - I don't 
> know which one you're using) has a DictCursor. You should find all you 
> want to know in the relevant doc.
> 

Correct me if I'm wrong, but I think the DictCursor would output the following:

[{'id': 1, 'value': 5}, {'id': 2, 'value': 5}, ...]

But the OP wanted one dict with IDs as keys:

{1: 5, 2: 5, ...}

As a side note to the OP, a better format might be:

{1: (5,), 2: (5,), ...}

Where each key keys into a tuple, in case you want to pull more than one value from the DB. Also, in this format, it is essential that the record used as a key be a primary key or uniquely indexed, in order to avoid collisions.  If you intend to make this code reusable, it might be worth explicitly checking for this, and raising an exception if it is not.

Cheers,
Cliff




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct  9 07:55:47 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 09 Oct 2007 13:55:47 +0200
Subject: property question
In-Reply-To: <mailman.5.1191907259.916.python-list@python.org>
References: <mailman.5.1191907259.916.python-list@python.org>
Message-ID: <470b6c13$0$17059$426a74cc@news.free.fr>

Manu Hack a ?crit :
> hi all,
> 
> If I have a class A with A.x, A.y, A.z.  A.y and A.z are property and
> in order to compute the value of them, A.y depends on A.x while A.z
> depends on A.y and A.x.  If I call A.y, and A.z, the value A.y would
> be computed twice.  Is there a smart way to avoid that as to A.y will
> be recomputed only if A.x has been changed?  Now I can define more
> variables to keep track of what is changed but when there are more
> variables and the dependency becomes more involved it could be very
> complicated.  Thanks a lot.
> 

A Q&D solution is to use a local cache (usually a dict with propnames as 
keys), and have any 'setter' invalidate that cache, ie:

def cached_property(fn):
   propname = fn.__name__
   def fget(self):
     return self._from_cache(propname, fn)
   def fset(self, val):
     raise AttributeError("%s.%s is readonly" % (self, propname))
   return property(fget, fset)

class A(object):
   def __init__(self, x):
     self._cache = {}
     self.x = x

   def _from_cache(self, name, fn):
     try:
       return self._cache[name]
     except KeyError:
       val = fn(self)
       self._cache[name] = val
       return val

   def _invalidate_cache(self, *names):
     for name in names:
       try:
         del self._cache[name]
       except KeyError, e:
         #print "%s : %s not in %s" % (e, name, self._cache)
         pass

   @apply
   def x():
     def fget(self):
       return self._x
     def fset(self, x):
       self._x = x
       # dependencies here - would be nice to have
       self._invalidate_cache('y', 'z')
     return property(**locals())

   @cached_property
   def y(self):
     return self.x + 2

   @cached_property
   def z(self):
     return self.x * (self.y / 2.0)

The remaining problem is that here, it's x that have the knowledge of 
who depends on it. This knowledge would be better expressed as a param 
or the @cached_property decorator and stored somewhere, so that the call 
to _invalidate cache would take the name of the property itself (here 
'x') instead of the list of dependent cached properties. This can be 
done at least with a custom metaclass - implementation left as an 
exercice to the reader !-)


From mathieu.malaterre at gmail.com  Thu Oct 18 12:36:37 2007
From: mathieu.malaterre at gmail.com (mathieu)
Date: Thu, 18 Oct 2007 16:36:37 -0000
Subject: strptime and microseconds
In-Reply-To: <1192723239.854957.257280@v29g2000prd.googlegroups.com>
References: <1192723239.854957.257280@v29g2000prd.googlegroups.com>
Message-ID: <1192725397.632337.73420@k35g2000prh.googlegroups.com>

On Oct 18, 6:00 pm, mathieu <mathieu.malate... at gmail.com> wrote:
> Hi there,
>
>   I am trying to use strptime to parse my microseconds but I was not
> able the documentation for it. The only list I found was:
>
>  http://docs.python.org/lib/module-time.html
>
>  So I can get seconds with %S, but nowhere is there a microsecond
> symbol...
>
> Thanks for pointer to doc,
> -Mathieu
>
> s1 = "20070619"
> s2 = "150348.62"
> s = s1+s2
> d = datetime(*strptime(s, "%Y%m%d%H%M%S.%?"))


Getting closer...

s1 = "20070619"
s2 = "115344.51"
s3 = "115445.123456"

ms2 = eval(s2) % 1
mms2 = int(ms2 * 1000000 + 0.5)
ms3 = eval(s3) % 1
mms3 = int(ms3 * 1000000 + 0.5)

s = s1 + s2
d1 = datetime(*strptime(s[:12], "%Y%m%d%H%M%S")[0:6])
d1.replace(microsecond = mms2)
#print d1.microsecond

s = s1 + s3
d2 = datetime(*strptime(s[:12], "%Y%m%d%H%M%S")[0:6])
d2.replace(microsecond = mms3)
#print d2.microsecond

d = d2 - d1
print d.seconds
print d.microseconds

why would d.microseconds be 0 ??

Thanks,
-Mathieu



From robert.rawlins at thinkbluemedia.co.uk  Fri Oct 26 05:32:13 2007
From: robert.rawlins at thinkbluemedia.co.uk (Robert Rawlins - Think Blue)
Date: Fri, 26 Oct 2007 10:32:13 +0100
Subject: Eclipse Plugins
Message-ID: <01b301c817b3$17704e40$4650eac0$@rawlins@thinkbluemedia.co.uk>

Hello Chaps,

 

I'm not sure what you IDE you all generally use for your python development.
I've been somewhat lazy and always used a plain text editor, however this
technique is starting to take its toll, and it's purely been out of laziness
not finding myself a decent IDE to develop in. So this morning task is to
pull my thumb out of my arse and set something up properly.

 

For my other languages, such as HTML, ColdFusion, JAVA etc I make good use
of the Eclipse SDK, and I'm looking for some advice on the best and most
popular python plug-ins available, what would you suggest? I downloaded one
called PyDev which looked ok but nothing too exciting.

 

Thanks guys,

 

Rob

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071026/7a4d40aa/attachment.html>

From devraj at gmail.com  Thu Oct 18 02:10:33 2007
From: devraj at gmail.com (Devraj)
Date: 17 Oct 2007 23:10:33 -0700
Subject: Best Python Linux distribution
In-Reply-To: <mailman.120.1192625659.13605.python-list@python.org>
References: <mailman.120.1192625659.13605.python-list@python.org>
Message-ID: <1192662005.972534.136890@i13g2000prf.googlegroups.com>

I would recommend a Debian based distribution like Ubuntu or Debian
itself :)

On Oct 17, 10:29 pm, Anthony Perkins <anth... at muzz.co.uk> wrote:
> Hi everyone,
>
> What is the best GNU/Linux distribution (or the most preferred) for
> developing Python applications?  Ideally I would like one with both
> Python *and* IDLE included on the install media (neither Ubuntu nor SUSE
> have IDLE on the CDs), so that I can use it on machines without a
> network connection.
>
> Thanks,
>
> -Anthony
>
> --
> Anthony Perkins
> muzz.be




From bj_666 at gmx.net  Tue Oct 16 13:17:33 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 17:17:33 GMT
Subject: Why does the message send only once?
References: <1192550131.869157.88130@q5g2000prf.googlegroups.com>
Message-ID: <5nka1dFiilfrU7@mid.uni-berlin.de>

On Tue, 16 Oct 2007 15:55:31 +0000, danfolkes wrote:

> Why does the message send only once?
> 
> The node sends once, then fails after that.

Because the `Server` just seems to handle the first connection and is done
then.  Insert some ``print``\s to see what's going on.

Ciao,
	Marc 'BlackJack' Rintsch


From sjmachin at lexicon.net  Sun Oct 14 17:17:12 2007
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 14 Oct 2007 14:17:12 -0700
Subject: Simple Text Processing Help
In-Reply-To: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
Message-ID: <1192396632.736910.134070@q5g2000prf.googlegroups.com>

On Oct 14, 11:48 pm, patrick.wa... at gmail.com wrote:
> Hi all,
>
> I started Python just a little while ago and I am stuck on something
> that is really simple, but I just can't figure out.
>
> Essentially I need to take a text document with some chemical
> information in Czech and organize it into another text file.  The
> information is always EINECS number, CAS, chemical name, and formula
> in tables.  I need to organize them into lines with | in between.  So
> it goes from:
>
> 200-763-1                     71-73-8
> n?trium-tiopent?l           C11H18N2O2S.Na           to:
>
> 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
>
> but if I have a chemical like: kyselina mo?ov?
>
> I get:
> 200-720-7|69-93-2|kyselina|mo?ov?
> |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
>
> and then it is all off.
>
> How can I get Python to realize that a chemical name may have a space
> in it?
>

Your input file could be in one of THREE formats:
(1) fields are separated by TAB characters (represented in Python by
the escape sequence '\t', and equivalent to '\x09')
(2) fields are fixed width and padded with spaces
(3) fields are separated by a random number of whitespace characters
(and can contain spaces).

What makes you sure that you have format 3? You might like to try
something like
    lines = open('your_file.txt').readlines()[:4]
    print lines
    print map(len, lines)
This will print a *precise* representation of what is in the first
four lines, plus their lengths. Please show us the output.



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 01:35:42 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 02:35:42 -0300
Subject: [OT] Re: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<mailman.491.1193440660.13605.python-list@python.org>
	<1193452111.090356.44160@v3g2000hsg.googlegroups.com>
Message-ID: <op.t0x1tsshx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Fri, 26 Oct 2007 23:28:31 -0300, Carl Banks <pavlovevidence at gmail.com>  
escribi?:

> FYI: The $ sign is used to denote currency in many countries; as a
> rule of thumb countties that call their currency "dollars" or "pesos"
> use the $.  So Mexico, Canada, Australia, much of Latin America, much
> of the Pacific, not to mention countries in Africa (Zimbabwe) and Asia
> (Singapore).

[OT] Furthermore, the $ sign was used originally to denote "pesos", or  
Spanish reals (pieces of eight each). It was later that the US adopted the  
sign to denote "dollars" too.

-- 
Gabriel Genellina



From gagsl-py2 at yahoo.com.ar  Tue Oct 30 22:39:39 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 23:39:39 -0300
Subject: simple? embedding question
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
	<1193773092.878006.203990@o3g2000hsb.googlegroups.com>
Message-ID: <op.t01i0drrx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 16:38:12 -0300, <kyosohma at gmail.com> escribi?:

> On Oct 30, 1:31 pm, snd... at gmail.com wrote:
>> suppose i have imported two modules foo and bar with
>> foo=PyImport_ImportModule("foo") and bar=PyImport_ImportModule("bar")
>> respectively.
>
> I'm confused. What is the benefit of importing this way in the first
> place? Everything I've read has always been either of the following
> (or a variant thereof):
>
> import foo
>
> or
>
> from foo import bar

They're different things. The PyImport_XXX stuff are C functions used in C  
code - usually inside an application *embedding* Python. The latter is  
plain old Python code.

-- 
Gabriel Genellina



From panguohualove at sina.com  Fri Oct  5 03:34:37 2007
From: panguohualove at sina.com (panguohua)
Date: Fri, 05 Oct 2007 00:34:37 -0700
Subject: a good website for making money online
Message-ID: <1191569677.304211.27500@d55g2000hsg.googlegroups.com>

www.space666.com



more information for making money



From mdipierro at cti.depaul.edu  Tue Oct 16 23:20:04 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Tue, 16 Oct 2007 22:20:04 -0500
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1192252650.930269.167970@e34g2000pro.googlegroups.com>
References: <mailman.154.1192242582.927.python-list@python.org>
	<1192252650.930269.167970@e34g2000pro.googlegroups.com>
Message-ID: <E98D9704-1156-4E85-B089-F5FA10867CFE@cti.depaul.edu>

I have posted a new version of Gluon and some slides. I am hoping to  
have a draft manual soon.
I believe I have fixed all of the issues that have been addressed  
but, if not, please let me know.

Massimo
Did you try gluon? http://mdp.cti.depaul.edu/examples

On Oct 13, 2007, at 12:17 AM, Kay Schluehr wrote:

> On Oct 13, 4:23 am, Massimo Di Pierro <MDiPie... at cti.depaul.edu>
> wrote:
>> Hello everybody,
>>
>> I just joined this mailing list. Thanks for your comments about  
>> gluon.
>>
>> I have posted a short video about it and I am planning to make more
>> over the week-end.
>>
>> http://www.youtube.com/watch?v=VBjja6N6IYk
>>
>> About some of your comments:
>> - the most complex modules (like html and sql ones) have doctests.
>> - the executable versions (win and mac) come with python2.5. Running
>> from source code does not require 2.5 but you probably want sqlite3.
>> - so far I support sqlite3 and postgresql, not mysql (just because I
>> do not use it and had no time for testing it).
>> - yes, there are typos in the documentation. Please point them out to
>> me so that I can fix them.
>> - I am sure there are some minor bugs I am not aware of but as far I
>> tested, it work.
>> - If you report bugs to me I promise to fix them in 48hrs.
>> - please make sure you have the latest version.
>>
>> I very much appreciate comments about gluon (good and bad). Please
>> send me more so that I can improve it.
>>
>> There will be two talks in chicago about gluon next week: at DePaul
>> Linux Users Group on Thursday evening and at the Chicago Linux Users
>> Group on Saturday afternoon. I will try record them and post them.
>>
>> Massimo
>
> Massimo, it's just a style matter but could you please unmix tabs and
> blanks in Gluon?
>
> Since Gluon is pure Python I can try backtranslating the Python 2.5
> code to Python 2.4. This requires following tool of mine:
>
> http://www.fiber-space.de/EasyExtend/doc/Py25Lite/Py25Lite.html
>
> The Python 2.4 source code can then be used by people like Michele who
> have 2.4 lecagies. Note that the conversion process is fully automated
> ( it requires just a little conversion script targetting Gluon ) and
> can be reiterated. The conversion however needs tests to be confirmed.
> It would also be a nice little project for Py25Lite in the real-world.
>
> Kay
>
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From erik at myemma.com  Mon Oct 15 10:47:06 2007
From: erik at myemma.com (Erik Jones)
Date: Mon, 15 Oct 2007 09:47:06 -0500
Subject: Order of tuples in dict.items()
In-Reply-To: <13h55uj8pogd4ea@corp.supernews.com>
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
	<13h55uj8pogd4ea@corp.supernews.com>
Message-ID: <3448192B-3390-4214-B030-3E8DF3B24D9E@myemma.com>

On Oct 14, 2007, at 5:27 PM, Steven D'Aprano wrote:

> On Sun, 14 Oct 2007 13:26:27 -0700, Erik Max Francis wrote:
>
>> Will McGugan wrote:
>>
>>> If I have two dictionaries containing identical values, can I be  
>>> sure
>>> that the items() method will return tuples in the same order?
> [...]
>>> Can I rely on this behavior?
>>
>> Probably not.
>
> Definitely not. See Paul Hankin's earlier post in this thread.
>
>
>> Dictionaries do not have an ordering that you should
>> count on.  In practice, the order in which you get the items if you
>> iterate over a dictionary is dependent on the hashing function, which
>> can potentially change over time.
>
> Well, I suppose it *is* possible for Python to change its hash  
> function
> in some future version, but Python hashing is highly optimized,  
> very fast
> and not likely to change.
>
> It's especially not likely to change in the middle of a run of your
> program, say between calling a.items() and calling b.items().

Not between two consecutive reads, no.  However, after any resizing  
of a dict the result of Python's hash function for any given newly  
inserted key is extremely likely to be different than it would have  
been before the resizing, i.e. the method may be the same, but the  
result is different.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From f.guerrieri at gmail.com  Mon Oct 15 08:47:30 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Mon, 15 Oct 2007 14:47:30 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <13h6nlmd8aku2ea@corp.supernews.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
	<mailman.16.1192446949.13605.python-list@python.org>
	<13h6nlmd8aku2ea@corp.supernews.com>
Message-ID: <79b79e730710150547g376b0b62g46d3fb9b2c467377@mail.gmail.com>

On 10/15/07, Steven D'Aprano <steve at remove-this-cybersource.com.au> wrote:
> >>> ''.join(reversed("abc"))
> 'cba'
> >>> list(reversed(range(3)))
> [2, 1, 0]
>
> It doesn't take much to make a more user-friendly version:
>
>
> def myreversed(sequence):
>     if isinstance(sequence, basestring):
>         return type(sequence)().join(reversed(sequence))
>     else:
>         return type(sequence)(reversed(sequence))
>
> (in fact, that's so simple I wonder why the built-in reversed() doesn't
> do that).

simple:
In the face of ambiguity, refuse the temptation to guess.

:-)


From sean at buildingonline.com  Tue Oct 30 19:10:39 2007
From: sean at buildingonline.com (sberry)
Date: Tue, 30 Oct 2007 16:10:39 -0700
Subject: SOAPpy / WSDL help... please
Message-ID: <1193785839.266287.37470@k35g2000prh.googlegroups.com>

I have an Adobe InDesign server running that includes a built-in SOAP
server.  The wsdl is located here:
http://www.seanberry.com/IDSP.wsdl.

I have a PHP example that looks like this for calling the SOAP
function runScriptParameters

//---------------------------------------------------------------------------
$scriptArgs = array();
$scriptArgs[] = array("name" => "myVarName", "value" => "myVarValue");
$scriptArgs[] = array("name" => "myVarName2", "value" =>
"myVarValue2");
$runScriptParams = array( "scriptFile" => "/some/path/to/file.jsx",
"scriptArgs" => $scriptArgs, "scriptLanguage" => "javascript");
$scriptData = array("runScriptParameters" => $runScriptParams);
$client = new SoapClient("IDSP.wsdl", $proxy_settings);
$returnedValue = $client->RunScript($scriptData);
//---------------------------------------------------------------------------



This works fine and produces the following as its output XML:
//---------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/
envelope/" xmlns:ns1="http://ns.adobe.com/InDesign/soap/">
	<SOAP-ENV:Body>
		<ns1:RunScript>
			<runScriptParameters>
				<scriptLanguage>javascript</scriptLanguage>
				<scriptFile>/some/path/to/file.jsx</scriptFile>
				<scriptArgs><name>myVarName</name><value>myVarValue</value></
scriptArgs>
				<scriptArgs><name>myVarName2</name><value>myVarValue2</value></
scriptArgs>
			</runScriptParameters>
		</ns1:RunScript>
	</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
---------------------------------------------------------------------------


Now I am writing a client in Python and have tried the following:
//---------------------------------------------------------------------------
#!/usr/bin/python

import SOAPpy

url = "./IDSP.wsdl"

wsdlObject = SOAPpy.WSDL.Proxy(url)
SOAPpy.Config.debug = 1

scriptArgs = []
scriptArgs.append({"name":"myVarName", "value":"myVarValue"})
scriptArgs.append({"name":"myVarName2", "value":"myVarValue2"})
runScriptParams = {}
runScriptParams["scriptFile"] = "/some/path/to/file.jsx"
runScriptParams["scriptLanguage"] = "javascript"
runScriptParams["scriptArgs"] = scriptArgs

result = wsdlObject.RunScript(runScriptParameters=runScriptParams)
print result
//---------------------------------------------------------------------------


This errors out and shows the following as the XML.
//---------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/1999/XMLSchema"
>
        <SOAP-ENV:Body>
                <RunScript SOAP-ENC:root="1">
                        <runScriptParameters>
                                <scriptArgs SOAP-
ENC:arrayType="ns1:SOAPStruct[2]" xsi:type="SOAP-ENC:Array"
xmlns:ns1="http://soapinterop.org/xsd">
                                        <item>
                                                <name
xsi:type="xsd:string">myVarName</name>
                                                <value
xsi:type="xsd:string">myVarValue</value>
                                        </item>
                                        <item>
                                                <name
xsi:type="xsd:string">myVarName2</name>
                                                <value
xsi:type="xsd:string">myVarValue2</value>
                                        </item>
                               </scriptArgs>
                               <scriptLanguage
xsi:type="xsd:string">javascript</scriptLanguage>
                               <scriptFile xsi:type="xsd:string">/some/
path/to/file.jsx</scriptFile>
                       </runScriptParameters>
                </RunScript>
        </SOAP-ENV:Body>
</SOAP-ENV:Envelope>
//---------------------------------------------------------------------------------

This looks wrong first off because of the RunScript node, but also has
those extra "item" nodes for the scriptArgs instead of each being a
scriptArgs node.  Can anyone help?  I really need to get this working
and would appreciate any pointers anyone can give.

THANKS!!!



From python.list at tim.thechases.com  Fri Oct 19 11:06:21 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 19 Oct 2007 10:06:21 -0500
Subject: write whitespace/tab to a text file
In-Reply-To: <1192804377.123125.111850@q5g2000prf.googlegroups.com>
References: <1192804377.123125.111850@q5g2000prf.googlegroups.com>
Message-ID: <4718C7ED.4080102@tim.thechases.com>

> I would l like to write some data to a text file. I want to write the
> data with whitespace or tabs in between so that I create tabular
> columns like in a spreadsheet. How can I do this in python.
> (btw, I'm new to python)
> 
> names = ['John','Steve','asimov','fred','jim']
> ## output I would like in txt file : John         Steve
> asimov      fred     jim
> 
> f=open('/User/home/Documents/programming/python/test.txt','w')
> 	for x in range(len(names)):
> 		f.write(tags[x])
> 	f.close()
> 

The idiomatic way to do this would be something like

 f = open('/path/to/file.txt', 'w')
 f.write('\t'.join(names))
 f.write('\n')
 f.close()

the .join() method on a string joins the contents of a list with
the string on which it's called (in this case, "\t" which is a tab).

-tkc





From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 15:44:48 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 20:44:48 +0100
Subject: Readline and record separator
In-Reply-To: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
Message-ID: <472789dd$0$23261$426a74cc@news.free.fr>

Johny a ?crit :
> Is it possible to change record separator when using readline?
> As far as I know readline reads characters until found '\n' and it is
> the end of record for readline.

This is not a "record" separator, but a newline. As the name implies, 
file.readline is about reading a text file line by line. For a 
definition of "line" being : "a chuk of text that starts either at the 
beginning of the document or after a newline" and for a definition of 
"newline" being "a platform-specific character or character sequence".

> My problem is that my record consits several '\n' and when I use
> readline it does NOT read the whole my record.
> So If I could change '\n' as  a record separator for readline, it
> would solve my problem.
> Any idea?

If you're dealing with (so-called) CSV files, you might want to have a 
look at the (oh surprise) CSV module (in the stdlib) instead.

HTH


From marcpp at gmail.com  Thu Oct 11 17:44:51 2007
From: marcpp at gmail.com (marc)
Date: Thu, 11 Oct 2007 23:44:51 +0200
Subject: Diferent files: GUI (wxpython) Program
Message-ID: <fem5g9$mia$1@aioe.org>

Hi why I can call an .py GUI (wxpython) from a program and control it?
I'm newbie in python.


From schilling.klaus at web.de  Thu Oct  4 09:24:20 2007
From: schilling.klaus at web.de (Klaus Schilling)
Date: Thu, 04 Oct 2007 15:24:20 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<47041303$0$13930$fa0fcedb@news.zen.co.uk>
	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>
Message-ID: <87fy0rovwb.fsf@web.de>

George Neuner <gneuner2/@comcast.net> writes:
>
> Or, how about politics?  Another example from the Judeo-Christian
> Bible (that is, from the Old Testament), politicking was the sin that
> resulted in Lucifer's fall from God's grace.

that's not a God, but an inferior demiurge, 
as correctly figured by Marcion

> [Yeah, I know the official story is that Lucifer's sin was envy.

the official story is thoroughly flawed.
of course Lucifer means carrier of light,
and thus has nothing to do with sin.
but the contrary.
Lucifer brings enlightenment to those people
who are enchained in the darkness of oppression and stupor
the demiurge imposed upon them.
Thus it's Plato who equalled the situation of
unenlightened mankind with that of prisoners in a dark cave.
Sin is the rejection of the light brought by 
the carrier of light.
Same goes for those who have once seen the light of
the Symbolic Expressions, but continue rejoycing in
infix Syntax. 

Klaus Schilling


From hg at nospam.org  Wed Oct 17 23:29:56 2007
From: hg at nospam.org (hg)
Date: Thu, 18 Oct 2007 03:29:56 GMT
Subject: Noob questions about Python
References: <1192649872.335816.194250@e34g2000pro.googlegroups.com>
Message-ID: <UqARi.15184$JD.4210@newssvr21.news.prodigy.net>

Ixiaus wrote:

> I have recently (today) just started learning/playing with Python. So
> far I am excited and impressed (coming from PHP background).
> 
> I have a few questions regarding Python behavior...
> 
> val = 'string'
> li = list(val)
> print li.reverse()
> 
> returns nothing, but,
> 
> val = 'string'
> li = list(val)
> li.reverse()
> print li
> 
> returns what I want. Why does Python do that?
> 
> Also I have been playing around with Binary math and noticed that
> Python treats:
> 
> val = 00110
> 
> as the integer 72 instead of returning 00110, why does Python do that?
> (and how can I get around it?)
> 
> Grateful for any replies!

li.reverse does not return a list but reverses the list itself and return
Noe

0xxx tells python that you work in octal.

hg






From grante at visi.com  Wed Oct 17 21:29:38 2007
From: grante at visi.com (Grant Edwards)
Date: Thu, 18 Oct 2007 01:29:38 -0000
Subject: Best way to generate alternate toggling values in a loop?
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
Message-ID: <13hddo2obghq5c0@corp.supernews.com>

On 2007-10-17, Debajit Adhikary <debajit1 at gmail.com> wrote:

> # Start of Code
>
> def evenOdd():
>     values = ["Even", "Odd"]
>     state = 0
>     while True:
>         yield values[state]
>         state = (state + 1) % 2

I'd replace the last line with
         
          state ^= 1

to save a couple instructions, but I spend too much time
working with micoroprocessors running on clocks measured in the
KHz.

There are probably other more Pythonic ways...

-- 
Grant Edwards                   grante             Yow!  My EARS are GONE!!
                                  at               
                               visi.com            


From fred.sells at adventistcare.org  Thu Oct 11 09:11:45 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Thu, 11 Oct 2007 09:11:45 -0400
Subject: RMI with Pyro et al
In-Reply-To: <5n51ipFg7ceoU1@mid.uni-berlin.de>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38E5@acesxch01.ADVENTISTCORP.NET>

Diez B. Roggisch wrote 
. Why do you want that (hot deploy)
> anyway? Does startuptime of a script really bother you? 
> shouldn't take 
> more than a few seconds.

My primary need is development/debug.  I'm a Pyro newbie and I add a
feature and then test.  The only way I've found to kill the Pyro server
on XP is to open the task manager and kill the python task (hopefully
the right one).

 



From pavlovevidence at gmail.com  Wed Oct 24 22:35:59 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 24 Oct 2007 19:35:59 -0700
Subject: list (range) syntax
In-Reply-To: <pan.2007.10.24.22.44.28.712782@vscht.cz>
References: <pan.2007.10.24.22.44.28.712782@vscht.cz>
Message-ID: <1193279759.252875.120610@v23g2000prn.googlegroups.com>

On Oct 24, 6:44 pm, Michal Bozon <boz... at vscht.cz> wrote:
> many Python newcomers are confused why
> range(10), does not include 10.
>
> If there was a proposal for the new
> syntax for ranges, which is known
> e.g. from Pascal or Ruby...
>
> >>> [0..10]
>
> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>
> ...is there a chance to be approved ?
>
> We have had a short discussion on it
> at the irc, I hope that the fact
> that nobody agreed it is a good idea
> was just an accident :)


No, sorry, it's just not going to happen.

In fact, the opposite is happening.  Python is removing the few cases
that use a closed interval.  For example, random.randint(a,b), which
returned a random integer in range a to b inclusive, was deprecated in
favor of random.randrange(a,b), which generates a random integer in
range a to b, not inclusive.


The advantages of open ranges are especially apparent to someone like
me, who uses Python at home, then has to go to work and Matlab.  It's
not that I accidentally use open intervals a lot (I've gotten into the
habit of making sure I am using closed intervals whenever my tension
level is high :), but all the extra "+1"s and "-1"s that I need when
splicing arrays gets pretty old.


Carl Banks



From carsten at uniqsys.com  Wed Oct  3 14:01:58 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 03 Oct 2007 14:01:58 -0400
Subject: module confusion
In-Reply-To: <BLU107-W17BF9FE0731060799F876EB4AF0@phx.gbl>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1413.1191364484.2658.python-list@python.org>
	<fdvq7h$fbq$1@lust.ihug.co.nz>
	<BLU107-W1F7D9BD82A606725A0AD7B4AF0@phx.gbl>
	<BLU107-W17BF9FE0731060799F876EB4AF0@phx.gbl>
Message-ID: <1191434518.3393.6.camel@dot.uniqsys.com>

On Wed, 2007-10-03 at 17:24 +0000, wang frank wrote:
> Sorry for the wrong title of this email. Please ignore this email. I
> have resend the question with correct title.

But it's still in the wrong thread. When asking a new question, you
should compose a new message instead of replying to an existing message.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From sndive at gmail.com  Wed Oct 31 21:01:53 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Wed, 31 Oct 2007 18:01:53 -0700
Subject: PyDict_*() refcount assumptions
Message-ID: <1193878913.364157.91440@57g2000hsv.googlegroups.com>

i checked this: http://svn.python.org/projects/python/trunk/Doc/data/refcounts.dat
and it seems that
PyDict_SetItem incref the value being added and the key
and PyDict_DelItem does not decrement any refcounts
so i have to do so manually for the key and for the data( by calling
PyDict_GetItem first).
Did i decipher the dat file correctly and is there a wrapper for
DelItem that reverses
the refcounts to what they were before the SetItem or do i have have
to do 2 calls for
deletion?



From hainguyen2x at yahoo.com  Thu Oct 11 12:39:40 2007
From: hainguyen2x at yahoo.com (hainguyen2x at yahoo.com)
Date: Thu, 11 Oct 2007 09:39:40 -0700
Subject: how to get the NT event log properties with OnObjectReady() with
	python
Message-ID: <1192120780.301198.62340@22g2000hsm.googlegroups.com>

I'm trying to get a notification from the NT event for any new event
using the DispatchWithEvents() function. Everything seems to be
working the way I wanted, but I don't know how to get the properties
of the event (ie. event type, message, etc.) from the OnObjectReady()
callback.

class SinkClass(object):
    def OnObjectReady(self, *args): #self may be the wmi_sink object
        print "OnObjectReady callback ..."
        print self #.TargetInstance.Message
        print args[0]

    def OnCompleted(self, *args):
        print "OnCompleted callback..."
        print args #.TargetInstance.Message

    def OnObjectPut(self, *args):
        print "OnObjectPut callback..."

    def OnProgress(self, *args):
        print "OnProgress callback..."

wmi = win32com.client.GetObject("winmgmts:
{impersonationLevel=impersonate,(security)}!//./root/cimv2")
wmi_sink =
win32com.client.DispatchWithEvents("WbemScripting.SWbemSink",SinkClass)
wmi.ExecNotificationQueryAsync(wmi_sink,"SELECT * FROM
__InstanceCreationEvent where TargetInstance ISA 'Win32_NTLogEvent'")


The argument args in the OnObjectReady() seems to be the interface to
a com object (may be the event object itself).
I want to read the properties (ie. message, eventID, type, etc)  of
the triggered NT event.

Please help.



From cwessels at motherit.com  Sun Oct  7 12:24:04 2007
From: cwessels at motherit.com (Christopher Wessels)
Date: Sun, 7 Oct 2007 18:24:04 +0200
Subject: Opening an EXE without using os.system
Message-ID: <002a01c808fe$7ebf70d0$7c3e5270$@com>

Hi, 

I am trying to open an EXE file without the command window popping up

At the moment I have got

 

Os.system("exe.exe args")

 

But as the program opens it flashes the command window.

 

It is going to be a WINDOWS program.

 

Thanks

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/4e5058ea/attachment.html>

From duane.kaufman at gmail.com  Tue Oct 23 13:45:34 2007
From: duane.kaufman at gmail.com (TheSeeker)
Date: Tue, 23 Oct 2007 10:45:34 -0700
Subject: Set operations on object attributes question
In-Reply-To: <1193153970.762375.262430@k35g2000prh.googlegroups.com>
References: <1193147226.862501.97240@v23g2000prn.googlegroups.com>
	<1193153970.762375.262430@k35g2000prh.googlegroups.com>
Message-ID: <1193161534.824430.299330@k35g2000prh.googlegroups.com>

Hi,

Thanks for the response! (See below for more discussion)

On Oct 23, 10:39 am, Raymond Hettinger <pyt... at rcn.com> wrote:
> [Duane]
>
> > LoTuples1 = [(1,1,0),(1,2,1),(1,3,3)]
> > Set1=set(LoTuples1)
> > LoTuples2 = [(2,1,3),(2,2,4),(2,3,2)]
> > Set2=set(LoTuples2)
>
> > What I would like to be able to do is:
>
> > Set3 = Set1union(Set2)
> > Set3.intersection(Set2, <use object[2]>)
>
> > to return:
> > set([(2,1,3), (1,3,3)])
>
> > How can one do this operation?
>
> Conceptually, there is more than one operation going on. First,
> finding the attributes shared in both sets:
>    ca = set(t[2] for t in LoTuples1) & set(t[2] for t in LoTuples2)
> which gives:
>    set([3])

In my use case, I already know object[2] is the key I wish to use, so
I could do this without the first step.
I am thinking of object[n] as the 'key' I wish to operate on, and the
other items in the tuple are useful attributes
I'll need in the end.

>
> Second, find any tuple which has that attribute (including multiple
> results for the same attribute):
>    set(t for t in (LoTuples1 + LoTuples2) if t[2] in ca)
> which returns:
>    set([(2, 1, 3), (1, 3, 3)])
>
> Wanting multiple results for the same attribute value (i.e. both
> (2,1,3) and (1,3,3) have 3 in the second position) is why multiple
> steps are needed; otherwise, the behavior of intersection() is to
> return a single representative of the equivalence class.
>
This second operation is really much like what I cam up with before I
started looking into exploiting the power of sets
(this same operation can be done strictly with lists, right?)

Since what I _really_ wanted from this was the intersection of the
objects (based on attribute 2), I was looking for a set-based
solution,
kinda like a decorate - <set operation> - undecorate pattern. Perhaps
the problem does not fall into that category.

Thanks for your help,
Duane



From david.trem at gmail.com  Sun Oct 14 16:33:39 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sun, 14 Oct 2007 22:33:39 +0200
Subject: Cross-platform GUI development
In-Reply-To: <5ncb0gFhliojU2@mid.uni-berlin.de>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<mailman.159.1192260728.927.python-list@python.org>
	<as0Qi.8294$UN.1208@newsfe24.lga>
	<mailman.165.1192269333.927.python-list@python.org>
	<5ncb0gFhliojU2@mid.uni-berlin.de>
Message-ID: <129e1cd10710141333l4b6759a8g41537203d287d5a7@mail.gmail.com>

"crappy",  "waaay better"
I will not feed the troll...
Pygtk on mac just do the work for me on a more than satisfying way.

David

2007/10/13, Diez B. Roggisch <deets at nospam.web.de>:
> David Tremouilles schrieb:
> > No issue with pygtk on mac!
> > Actually I develop on this platform everyday. Macport take care of the
> > installation for me http://www.macports.org/ (Fink should do the work
> > too).
> > Of course native GTK on OSX could be nice but definitely not needed at
> > this point in time.
>
> It sure looks crappy in comparison to the rest of the OSX apps - and
> given that with Qt (and of course the brilliant PyObjc-bridge) there
> exist options that look & feel waaay better, I wouldn't consider using GTK.
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From byte8bits at gmail.com  Mon Oct 29 15:30:10 2007
From: byte8bits at gmail.com (brad)
Date: Mon, 29 Oct 2007 15:30:10 -0400
Subject: python2.5 and mysqldb
In-Reply-To: <1193674960.082948.179940@22g2000hsm.googlegroups.com>
References: <1193674960.082948.179940@22g2000hsm.googlegroups.com>
Message-ID: <fg5ccd$om$1@solaris.cc.vt.edu>

writeson wrote:

... stuck trying to get mysqldb installed and running on this
> machine. I've tried with easy_install and by building from the tar
> file and both return a long list of errors from a gcc compile. I'm not
> sure what to do next to resolve this issue, so if anyone could give me
> some guidance it would be greatly appreciated.

I would stay at Python 2.3... Centos (like redhat) relies heavily on 
Python. Sure, you could hack it a bit and install both versions (which 
you obviously have), but IMO, it's not worth it. What feature of 2.5 is 
required that 2.3 can't do? I'd guess that the mysqldb compile is 
somehow being confused by the default 2.3 and the version you've 
installed or is conflicting with other versions of itself?

Again, unless there is a compelling reason to upgrade, don't or get a 
more flexible OS that easily allows for this sort of thing (like Debian)

Brad


From laurent.pointal at laposte.net  Fri Oct 26 03:11:14 2007
From: laurent.pointal at laposte.net (Laurent Pointal)
Date: 26 Oct 2007 07:11:14 GMT
Subject: Parallel insert to postgresql with thread
References: <1193310044.750654.157320@22g2000hsm.googlegroups.com>
	<5obctcFm7sogU1@mid.uni-berlin.de>
Message-ID: <47219311$0$27394$ba4acef3@news.orange.fr>

Le Thu, 25 Oct 2007 13:27:40 +0200, Diez B. Roggisch a ?crit?:

> DB modules aren't necessarily thread-safe. Most of the times, a
> connection (and of course their cursor) can't be shared between threads.
> 
> So open a connection for each thread.
> 
> Diez

DB modules following DBAPI2 must define the following attribute:

"""
  threadsafety

            Integer constant stating the level of thread safety the
            interface supports. Possible values are:

                0     Threads may not share the module.
                1     Threads may share the module, but not connections.
                2     Threads may share the module and connections.
                3     Threads may share the module, connections and
                      cursors.
"""

http://www.python.org/dev/peps/pep-0249/



-- 
Laurent POINTAL - laurent.pointal at laposte.net


From ldo at geek-central.gen.new_zealand  Wed Oct  3 17:20:44 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 10:20:44 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
Message-ID: <fe113c$7ua$3@lust.ihug.co.nz>

In message <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0 at 4ax.com>, George Neuner
wrote:

> Dictionaries used to be the arbiters of the language ...

No they didn't. Before Doctor Johnson, there were no dictionaries.


From draghuram at gmail.com  Mon Oct 15 12:37:49 2007
From: draghuram at gmail.com (draghuram at gmail.com)
Date: Mon, 15 Oct 2007 16:37:49 -0000
Subject: View XMLRPC Requests/Responses?
In-Reply-To: <1192465863.885603.282670@z24g2000prh.googlegroups.com>
References: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
	<1192465863.885603.282670@z24g2000prh.googlegroups.com>
Message-ID: <1192466269.602786.5750@v29g2000prd.googlegroups.com>

On Oct 15, 12:31 pm, "draghu... at gmail.com" <draghu... at gmail.com>
wrote:
> On Oct 15, 11:07 am, xkenneth <xkenn... at gmail.com> wrote:
>
> > Hi,
>
> >     I'm working on developing an XML-RPC interface from LabVIEW to
> > python and I would really like to see how python is forming it's XML-
> > RPC requests/responses. Is there any way I can force these to a log or
> > print them to the screen? Thanks.
>
> You may try setting verbose to True as in:
>
> s = xmlrpclib.Server('http://localhost:8000', verbose=True)
>
> This will cause both requests and responses to be printed.

This only works from the client side. On reading your post again, it
appears as though you are looking for server side logging. Of course,
you can still write a small python xmlrpc client (setting verbose) to
see the requests/responses.




From oruccim at gmail.com  Wed Oct  3 12:59:50 2007
From: oruccim at gmail.com (oruccim at gmail.com)
Date: Wed, 03 Oct 2007 16:59:50 -0000
Subject: spam kontrol
Message-ID: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>

hii
? think you know spam page is the most pest for net user.I want
distinguish spam page to usefull page
if you have a idea whit  this problem pleas share to me
thank you



From sjmachin at lexicon.net  Wed Oct 17 20:40:01 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 17 Oct 2007 17:40:01 -0700
Subject: Pull Last 3 Months
In-Reply-To: <mailman.144.1192661793.13605.python-list@python.org>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
Message-ID: <1192668001.366583.243610@v23g2000prn.googlegroups.com>

On Oct 18, 8:56 am, Shane Geiger <sgei... at ncee.net> wrote:
> A simpler way, imho:
>
> import datetime
> m = {
> 1:'Jan',2:'Feb',3:'Mar',4:'Apr',5:'May',6:'Jun',7:'Jul',8:'Aug',9:'Sep',10:'Oct',11:'Nov',12:'Dec'}
>
> month = datetime.date.today().month
> if month == 1:
>     ans = [m[11], m[12], m[1]]
> elif month == 2:
>     ans = [m[11], m[12], m[1]]
> else:
>     ans = [m[month-2], m[month-1], m[month]]
> print ans
>

1. Why use a dict?
2. The if-elif-else caper doesn't scale well; suppose the OP want to
"pull" the previous 6 months. The % operator is your friend.
Try this:

>>> m = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
>>> for mo in range(1, 13):
...    print mo, [m[(mo - x - 2) % 12] for x in range(3)]
...
1 ['Dec', 'Nov', 'Oct']
2 ['Jan', 'Dec', 'Nov']
3 ['Feb', 'Jan', 'Dec']
4 ['Mar', 'Feb', 'Jan']
5 ['Apr', 'Mar', 'Feb']
6 ['May', 'Apr', 'Mar']
7 ['Jun', 'May', 'Apr']
8 ['Jul', 'Jun', 'May']
9 ['Aug', 'Jul', 'Jun']
10 ['Sep', 'Aug', 'Jul']
11 ['Oct', 'Sep', 'Aug']
12 ['Nov', 'Oct', 'Sep']
>>> for mo in range(1, 13):
...    print mo, [m[(mo - x - 2) % 12] for x in range(6)]
...
1 ['Dec', 'Nov', 'Oct', 'Sep', 'Aug', 'Jul']
2 ['Jan', 'Dec', 'Nov', 'Oct', 'Sep', 'Aug']
...snip...
11 ['Oct', 'Sep', 'Aug', 'Jul', 'Jun', 'May']
12 ['Nov', 'Oct', 'Sep', 'Aug', 'Jul', 'Jun']
>>>



From deets at nospam.web.de  Mon Oct 15 11:10:38 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 15 Oct 2007 17:10:38 +0200
Subject: View XMLRPC Requests/Responses?
References: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
Message-ID: <5nhe7fFi4prbU1@mid.uni-berlin.de>

xkenneth wrote:

> Hi,
> 
>     I'm working on developing an XML-RPC interface from LabVIEW to
> python and I would really like to see how python is forming it's XML-
> RPC requests/responses. Is there any way I can force these to a log or
> print them to the screen? Thanks.

I've utilized the apache axis tcpmon for that, as proxy. See

http://docs.pushtotest.com/axisdocs/user-guide.html#tcpmon


Diez


From anuraguniyal at gmail.com  Tue Oct  9 08:45:51 2007
From: anuraguniyal at gmail.com (Anurag)
Date: Tue, 09 Oct 2007 05:45:51 -0700
Subject: tarfile...bug?
Message-ID: <1191933951.458411.285300@r29g2000hsg.googlegroups.com>

Hi,

I am trying to use tarfile module to list contents of a 'gz' file but
it seems to hang for large files and CPU usage goes 100%.
though 'tar -tvf' on same file list contents in couple of secs.

Here is a test script which can show the problem; I am using python
Python 2.4.3

------------
import tarfile

bigFilePath = "/tmp/bigFile"
bigFileTGZ = "/tmp/big.tar.gz"

# create a big file
print "Creating big file...",bigFilePath
f = open(bigFilePath,"w")
for i in xrange(100):
    f.write("anurag"*1024*1024)
f.close()

#create a tarfile from big file
print "pack to...",bigFileTGZ
tar = tarfile.open(bigFileTGZ, "w:gz")
tar.add(bigFilePath,"bigFile")
tar.close()

print "unpack...",bigFileTGZ
# now try to list contents of tar
tar  = tarfile.open(bigFileTGZ, "r")
tar.list() #hangs
------------

rgds
Anurag



From kyosohma at gmail.com  Tue Oct  2 17:00:54 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 02 Oct 2007 21:00:54 -0000
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <mailman.1402.1191343422.2658.python-list@python.org>
References: <mailman.1402.1191343422.2658.python-list@python.org>
Message-ID: <1191358854.210832.70630@n39g2000hsh.googlegroups.com>

On Oct 2, 11:43 am, "Jorgen Bodde" <jorgen.maill... at gmail.com> wrote:
> Hi all,
>
> I parse an XML file, replace a node with a new one (like updating
> cache) and write it back. Every write, new spaces are added. For
> example, first read - update - write cycle;
>
> <var name="APPNAME" status="undefined">
>      My First App
> </var>
>
> Second cycle:
>
> <var name="APPNAME" status="undefined">
>                  My First App
> </var>
>
> Third cycle:
>
> <var name="APPNAME" status="undefined">
>                                            My First App
> </var>
>
> And this goes on. The node is one that is not touched in the XML, it
> is simply written back after reading. I have the same with void spaces
> in between the nodes, I managed to compensate that by stripping the
> lines.
>
> I would like to use toprettyxml to make it user editable and viewable.
> But this is really weird. How can I circumvent this behaviour?
>
> regards,
> - Jorgen

I had similar problems and ended up switching to the lxml package to
solve the issue. I think you can do it with ElementTree too. Maybe
somebody with more experience with the xml / minidom modules will show
up soon.

Mike



From ricaraoz at gmail.com  Thu Oct  4 20:07:32 2007
From: ricaraoz at gmail.com (=?ISO-8859-15?Q?Ricardo_Ar=E1oz?=)
Date: Thu, 04 Oct 2007 21:07:32 -0300
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <4705096e$0$7686$9b4e6d93@newsspool2.arcor-online.net>
References: <4703dfff$0$30966$426a74cc@news.free.fr>	<1191439792.666146.217150@d55g2000hsg.googlegroups.com>	<Xns99BED1C4FA1CFduncanbooth@127.0.0.1>	<mailman.1483.1191444874.2658.python-list@python.org>	<4704a38c$0$2769$426a74cc@news.free.fr>	<mailman.1498.1191492616.2658.python-list@python.org>
	<4705096e$0$7686$9b4e6d93@newsspool2.arcor-online.net>
Message-ID: <47058044.1070208@bigfoot.com>

Wildemar Wildenburger wrote:
> Steve Holden wrote:
>> Malheureusement, I see that absence of accented capitals is a modern 
>> phenomenon that is regarded as an impediment to the language mostly 
>> stemming from laziness of individual authors and inadequacy of low-end 
>> typesetting software. I hadn't realised I was so up-to-date ;-)
>>
>> So I will have to stop propagating this misinformation.
>>
> 
> Thats really weird, because I was taught in school that caps are not to 
> be accented. In school! Big Brother is an idiot.
> 
> I'm equally ammused by the part of JBJ's link where it says that a 
> missing acccent "fait h?siter sur la prononciation". Yeah, AS IF written 
> French had anything to do with the way it is pronounced. Not that I 
> don't like french, mind you. Everywhere outside action movies its pretty 
> cool.
> 
> /W

Then you never saw Taxi. Or some of Depardieu's ones. Or Les
adventuriers (sp?) (that's a reeeeally old one), or I comme Icarus....


From http  Wed Oct  3 13:05:08 2007
From: http (Paul Rubin)
Date: 03 Oct 2007 10:05:08 -0700
Subject: enumerate overflow
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
	<mailman.1448.1191418743.2658.python-list@python.org>
Message-ID: <7xmyv0nn7f.fsf@ruckus.brouhaha.com>

Tim Chase <python.list at tim.thechases.com> writes:
> I'd consider this a bug:  either in the implementation of enumerate(),
> or in the documentation
> 
> http://docs.python.org/lib/built-in-funcs.html#l2h-24

2.5 has a patch that causes enumerate() and count() to raise overflow
if the count wraps around, which is still bad but at least beats
having the number suddenly go negative.  See:

  http://bugs.python.org/issue1512504     and
  http://mail.python.org/pipermail/python-checkins/2007-February/058486.html

also:

  http://bugs.python.org/issue1326277

I hope in 3.0 there's a real fix, i.e. the count should promote to
long.  The rationale for leaving the bug in the library is just silly.
2**32 is not that big a number if we're talking about a language and
runtime system supposedly good for writing servers that stay up
continuously for years.


From marcsgbrevkonto at gmail.com  Sun Oct  7 16:58:44 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 20:58:44 -0000
Subject: Newbie packages Q
In-Reply-To: <1i5m83i.1wbevvrjyk05eN%aleax@mac.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
	<47091e82$0$15807$426a74cc@news.free.fr>
	<1191786525.264853.107630@k79g2000hse.googlegroups.com>
	<1i5m6we.1wwjdby573v11N%aleax@mac.com>
	<1191788530.784618.284080@o80g2000hse.googlegroups.com>
	<1i5m83i.1wbevvrjyk05eN%aleax@mac.com>
Message-ID: <1191790724.319645.11730@g4g2000hsf.googlegroups.com>

On Oct 7, 10:31 pm, al... at mac.com (Alex Martelli) wrote:
> MarkyMarc <marcsgbrevko... at gmail.com> wrote:
>
>    ...
>
> > > > > > And sys.path is  /python/Test/bpack
>
> > > sys.path must be a LIST.  Are you saying you set yours to NOT be a list,
> > > but, e.g., a STRING?!  (It's hard to tell, as you show no quotes there).
>    ...
> > > > I also tried to put /python/ and /python/Test in the sys.path same
> > > > result.
>
> > > If the only ITEM in the list that is sys.path is the string '/python',
> > > then any Python code you execute will be able to import Test.apack (as
> > > well as Test.bpack, or just Test).
>
> > Of course I have more than just the /python string in the sys.path.
> > I have a list of paths, depending on which system the code run on.
>
> As long as '/python' comes in the list before any other directory that
> might interfere (by dint of having a Test.py or Test/__init__.py), and
> in particular in the non-pathological case where there are no such
> possible interferences, my assertion here quoted still holds.
>
> If you're having problems in this case, run with python -v to get
> information about all that's being imported, print sys.path and
> sys.modules just before the import statement that you think is failing,
> and copy and paste all the output here, incuding the traceback from said
> failing import.
>
> Alex

OK thank you, with some help from the -v option and debugging I found
a test package in some package. I now renamed it and load it with
sys.path.append.
And now the btest.py works.

BUT does this mean I have to set the path too the package in every
__init__.py class?
Or have do I tell a subpackage that it is part of a big package ?



From grante at visi.com  Fri Oct 26 20:00:12 2007
From: grante at visi.com (Grant Edwards)
Date: Sat, 27 Oct 2007 00:00:12 -0000
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
Message-ID: <13i4vsc2g5v400b@corp.supernews.com>

On 2007-10-26, jimmy.musselwhite at gmail.com <jimmy.musselwhite at gmail.com> wrote:

>> What in the world are you trying to count?
>
> The calculation looks like this
>
> A = 0.35
> T = 0.30
> C = 0.25
> G = 0.10

The bases in DNA?

> and then I basically continually multiply those numbers together. I
> need to do it like 200,000+ times but that's nuts.

Exactly.  It sure looks like what you're doing is nuts.

> I can't even do it 1000 times or the number rounds off to 0.0.
> I tried taking the inverse of these numbers as I go but then
> it just shoots up to "inf".

Can you explain what it is you're trying to calculate?

-- 
Grant Edwards
grante at visi.com



From pavlovevidence at gmail.com  Mon Oct 29 19:23:23 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Mon, 29 Oct 2007 16:23:23 -0700
Subject: A Python 3000 Question
In-Reply-To: <fg5fku$5c1$1@solaris.cc.vt.edu>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
Message-ID: <1193700203.988996.188730@o38g2000hse.googlegroups.com>

On Oct 29, 4:25 pm, brad <byte8b... at gmail.com> wrote:
> One of the criticisms of Python compared to other OO languages is that
> it isn't OO enough or as OO as others or that it is inconsistent.

Python is less thoroughly OO than some other languages, yes.  The
underlying assumption, that being thoroughly OO is a good thing, is
very dubious.


Carl Banks



From steve at holdenweb.com  Fri Oct  5 07:23:40 2007
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 05 Oct 2007 07:23:40 -0400
Subject: novice list
In-Reply-To: <47061973.8000504@freemail.hu>
References: <47061973.8000504@freemail.hu>
Message-ID: <47061EBC.4090508@holdenweb.com>

Istv?n wrote:
> Could somebody suggest me a novice Python list, please?
> Thanks, Istvan
> 
tutor at python.org is known to be noob-friendly. See

   http://mail.python.org/mailman/listinfo/tutor

for more details.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 12:19:18 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 17:19:18 +0100
Subject: A class question
In-Reply-To: <87hcka2d76.fsf@mulj.homelinux.net>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
Message-ID: <47260805$0$5155$426a34cc@news.free.fr>

Hrvoje Niksic a ?crit :
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
> writes:
> 
>> The problem is that your formulation implies (to me at least) that the
>> variable is actually a kind of container for the object.
> 
> I really didn't expect it to be read that way, especially since the
> sentence claims that the same instance can reside in several
> variables.  If the term variable implied containment, that would not
> be possible because different variables would imply different objects.
> 
> To be fair, the OP probably *did* confuse variables with containment,
> and I rot13'ed my hack to avoid unnecessarily prolonging that
> confusion.  However, I don't think his confusion is a consequence of
> inaccurate terminology, but of an inaccurate mental model of Python
> objects.

I'd think it has more to do with an inaccurate mental model of Python's 
variables - hence my (perhaps useless) corrections.

>  When the mental model is correct, the term "variable" works
> as well as any other; when it's incorrect, using different words for
> the same thing is of little help.

This is where our POV differ. IMHO, wording and mental model have a 
strong relationship - IOW, incorrect wording leads to incorrect 
representation.

>>>> Python's "variables" are name=>object bindings.
>>> No reason to use quotes. 
>> Yes, there's one : to mark the difference between Python-like
>> name=>object bindings and C-like labels-on-memory-address variables
>> the latter model being the most commonly known to beginners.
> 
> Are you sure about the last part?

Ok, I would not bet my hand on it !-) But the (non appliable) "pass by 
value"/"pass by reference" question is still asked often enough here to 
be an indication.

>  It seems to me that in recent times
> more Python beginners come from a Java background than from a C one.

Java does have "container" variables for primitive types, and even for 
"references", Java's variables are more than names - they do hold type 
informations too. Now I don't pretend to know how this is really 
implemented, but AFAICT, and at least from a cognitive POV, Java's 
variables model looks very close to the C/C++ model.

FWIW, I came to Python with a VB/C/Java/Pascal background, and Python 
was the first language for which I needed to revise my mental model of 
the "variable" concept.

> In any case, "variable" is a sufficiently general concept not to be
> tied to a specific implementation.

I'd say it's like the "type" concept : it's a general concept, but it's 
not totally implementation-independant. "Type" doesn't mean exactly the 
same thing in static or dynamic languages...

>  That the concept of variable
> differs among programming languages is for me not reason enough to
> eschew it.

I didn't mean to imply "variable" was an inappropriate term - just that 
it may have a somewhat different meaning wrt/ some others more 
mainstream languages. My humble experience is that rewording the whole 
concept in terms of name=>object bindings did sometime help in the past.



From goldtech at worldpost.com  Wed Oct 24 15:09:24 2007
From: goldtech at worldpost.com (goldtech)
Date: Wed, 24 Oct 2007 12:09:24 -0700
Subject: Test for a unicode string
Message-ID: <1193252964.441263.179350@e9g2000prf.googlegroups.com>

Hi,

I have a regular expression test in a script. When a unicode character
get tested in the regex it gives an error:

UnicodeError: ASCII decoding error: ordinal not in range(128)

Question: Is there a way to test a string for unicode chars (ie. test
if a string will throw the error cited above).

Like:
 if  unicode string:
      print  'string's line #'
 else:
      process the string

How do I do "if unicode string" cited in pseudo-code above?

Thanks, still using Python 2.1



From panguohualove at sina.com  Sat Oct 13 10:26:56 2007
From: panguohualove at sina.com (panguohua)
Date: Sat, 13 Oct 2007 07:26:56 -0700
Subject: a good website for softwares,sports,movies and music ,sex etc.
Message-ID: <1192285616.941556.22400@q3g2000prf.googlegroups.com>

www.space666.com




go  and look!!!!!!!!!!!!!!!



From aaron.watters at gmail.com  Fri Oct 26 11:48:53 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Fri, 26 Oct 2007 15:48:53 -0000
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <mailman.118.1192620083.13605.python-list@python.org>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<mailman.118.1192620083.13605.python-list@python.org>
Message-ID: <1193413733.489498.103870@o38g2000hse.googlegroups.com>

On Oct 17, 7:20 am, Steve Holden <st... at holdenweb.com> wrote:
> aaron.watt... at gmail.com wrote:
> > (see the graphic at the bottom of http://nucular.sourceforge.net)
>
> It's a shame the name obscures rather than enlightens. Your stuff is
> usually pretty good - I still remember Gadfly fondly.

Sorry you feel that way about the name, Steve :(.
I thought it was funny and eye catching.
I'm glad you remember Gadfly (http://gadfly.sourceforge.net).
Still distributed with many packages (including Zope, I think).
Still getting 5-20 downloads a day on sourceforge.
Not bad for a package released back in '94, eh?

   -- Aaron Watters

===
The method employed I would gladly explain,
     While I have it so clear in my head,
If I had but the time and you had but the brain--
     But much yet remains to be said.
-- http://www.xfeedme.com/nucular/gut.py/go?FREETEXT=snark



From Tagrislam at yahoo.com  Sun Oct 14 18:02:08 2007
From: Tagrislam at yahoo.com (Tagrislam at yahoo.com)
Date: Sun, 14 Oct 2007 15:02:08 -0700
Subject: hi hi hi
Message-ID: <1192399328.466026.101550@k35g2000prh.googlegroups.com>

Hi Hi Hi
my name is tagreed  , I am from Syria
I've seen many places of the world on TV screen and few that I've
visited either for fun or/ and business
as you know when we travel we meet a lot different cultures and
people.
I found in many places I've been to ; that people stereotyped Islam
(that's my religion ) they prejudge Muslims from what they see in
media incidents.
Allow me to share with you here some information about Jesus Christ .
Muslims believe in Jesus Christ ( peace and blessings of ( Allah=god )
be upon him as one of the mightiest messengers from ( Allah = god ).
We believe he is born miraculously by the word of Allah without father
Like ADAM Been created without father nor mother.
And marry ( mar yam ) is his mother the pious . pure female nay Allah
be pleased with her.



From eu_my123 at hotmail.com  Fri Oct 12 15:56:14 2007
From: eu_my123 at hotmail.com (TidyTrax@2)
Date: 12 Oct 2007 12:56:14 -0700
Subject: Melhor Site de Downloads [ BIG SITE AND LINKS FASTED]
Message-ID: <1192206459.490536.39700@q5g2000prf.googlegroups.com>

www.forumgratiz.com.br
www.forumgratiz.com.br
www.forumgratiz.com.br
Download de :
Filmes
Games
XXX
Programas
Isso e muito ++ totalmente gratis


http://www.forumgratiz.com.br/forumb/index.php?act=reg
http://www.forumgratiz.com.br/forumb/index.php?act=reg
http://www.forumgratiz.com.br/forumb/index.php?act=reg
Somente Registrados Podem Ver os T?picos

Por Favor Votem Tamb?m http://www.topinho.com/index.php?a=in&u=jeanmartins
http://www.topinho.com/index.php?a=in&u=jeanmartins
http://www.topinho.com/index.php?a=in&u=jeanmartins
Pois o Site Sobrevive disso.
..



From python at hope.cz  Wed Oct  3 10:00:37 2007
From: python at hope.cz (Johny)
Date: Wed, 03 Oct 2007 07:00:37 -0700
Subject: Python and SSL
In-Reply-To: <4703884A.10905@v.loewis.de>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
Message-ID: <1191420037.564584.103300@50g2000hsm.googlegroups.com>

On Oct 3, 2:17 pm, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
> > It looks like this
>
> > MyPythonProgram --->Proxy---->Server
> > The  proxy is written in Java. I want to use that proxy to see what my
> > Python program sends to server.
> > The proxy uses its own certificate and this certificate must be
> > trusted, I think, otherwise I receive an error.
>
> What error do you receive precisely? Please copy it literally from
> the terminal, don't rephrase it.
>
After I added certification, that the proxy uses, among those
Trusted Root Certification Authorities list,as
Gabriel described on Windows,

I receive
sslerror: (1, 'error:140770FC:SSL
routines:SSL23_GET_SERVER_HELLO:unknown protocol')


What does it mean?
Thanks.
L



From ricaraoz at gmail.com  Wed Oct 31 11:41:16 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Wed, 31 Oct 2007 12:41:16 -0300
Subject: dictionary and list
In-Reply-To: <aa405c1f0710300013p1edb353hd0df5512f6705db9@mail.gmail.com>
References: <aa405c1f0710300013p1edb353hd0df5512f6705db9@mail.gmail.com>
Message-ID: <4728A21C.5030207@bigfoot.com>

Beema shafreen wrote:
> hi everbody,
>                    I have a file,
>      a                 b               c                       d         e
>   2722316      2722360    A_16_P03641972    150    -44
>   2722510      2722554    A_16_P21360239    16    -44
>   2722570      2722614    A_16_P03641973    44    -44
>   2722658      2722702    A_16_P41563669    2187    -44
>   2724889      2724948    A_16_P03641974    738    -59
>   2725686      2725745    A_16_P03641975    422    -59
>   2726167      2726219    A_16_P03641976    88    -52
>   2726307      2726366    A_16_P41563677    2167    -59
>   2728533      2728589    A_16_P21360249    5819    -56
>   2734408      2734467    A_16_P21360257    -14    -59
>   2734453      2734509    A_16_P03641977    376    -56
>   2734885      2734929    A_16_P21360259    1987    -44
> 
>  i need to do with dictionary like this : c[d,e,d+1] =
> A_16_P03641972[150,-44,16]
> my script:d = {}
> fh = open('final_lenght_probe_span','r')
> for line in fh.readlines():
>         data = line.strip().split('\t')
>         probe_id = data[2].strip()
>         span = data[3].strip()
>         length = data[4].strip()
>         d[probe_id ] = []
>         d[probe_id] = [span,length,span[0+1]]
> for key in d.keys():
>         print key ,d[key]
> I donot end with this result how do i do....
> 
> 

I'm not sure if this is what you need
(check: A_16_P03641972 ['150', '-44', '16']) :

>>> d = {}
>>> probes = list(enumerate((i.split()[2],i.split()[3], i.split()[4])
			for i in open('pyth3.txt')))
>>> for idx, (probe_id, span, length) \
		in probes :
	try :
		d[probe_id] = [span, length, probes[idx+1][1][1]]
	except IndexError :
		d[probe_id] = [span, length, None]

		
>>> for key in d.keys():
        print key ,d[key]


A_16_P03641974 ['738', '-59', '422']
A_16_P03641975 ['422', '-59', '88']
A_16_P41563669 ['2187', '-44', '738']
A_16_P03641977 ['376', '-56', '1987']
A_16_P03641972 ['150', '-44', '16']
A_16_P03641973 ['44', '-44', '2187']
A_16_P21360249 ['5819', '-56', '-14']
A_16_P41563677 ['2167', '-59', '5819']
A_16_P03641976 ['88', '-52', '2167']
A_16_P21360239 ['16', '-44', '44']
A_16_P21360259 ['1987', '-44', None]
A_16_P21360257 ['-14', '-59', '376']


HTH



From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 08:05:52 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 14:05:52 +0200
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <13ga9kco185sud4@corp.supernews.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
	<47051d47$0$8036$426a74cc@news.free.fr>
	<13ga9kco185sud4@corp.supernews.com>
Message-ID: <470542ed$0$19638$426a74cc@news.free.fr>

Grant Edwards a ?crit :
> On 2007-10-04, Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
> 
> 
>>Yes, and it's even simpler : just pass your object. If it effectively 
>>implements the desired interface, everything will work fine !-)
> 
> [...]
> 
> 
>>>What I'd like to do is create a feature detection system for
>>>my work -- specifically, a general class / interface called
>>>"Feature" and then subclasses that implement functions like
>>>isFeaturePresent() in all of their different and unique ways.
>>>I'd love to hear how I can do this in Python.
>>
>>I'm not sure about what you exactly want to do, but FWIW, checking if an 
>>object has a given attribute is quite simple:
>>
>>if has_attr(obj, 'attribute_name'):
>>   print "Hurray"
>>else:
>>   print "D'oh"
>>
>>Note that in Python, methods are attributes too - only they
>>are callable.
> 
> 
> On a slight tangent....
> 
> The "Pythonic" way to handle things like that is often just
> to call the method you want to call.  If the object doesn't
> have that method, then you catch the exception and do whatever
> it is you do in the case where the object doesn't have the
> feature in question.  

Depends... If you expect the object to have this attribute most of the 
time, then the try/except solution is fine, but else it might be better 
to look-before-you-leap - try/except blocks are costly when there's 
effectively an exception.

As a side note, you may not necessarily want to actually call the 
method, only know if it's there. As a side-side note, if you want to 
call it but choose the look-before-you-leap approach, using getattr() 
and storing a local reference to the method might be better, since it 
avoids a second lookup.

> 
> The tricky bit is only catching the AttributeError exception
> generated by the attempt to access the non-existant method, and
> not catching AttributeError exceptions generated by bugs in the
> method when it does exist.
> 
> Once you've added code to make sure you only catch exceptions
> you care about, it's simpler to just call has_attr
> 
> the obvious method
> 
>    try:
>        myobj.feature1()
>    except AttributeError:
>        print "object doesn't implement feature1"
>     
> isn't correct, since an unhandled AttributeError generated by
> the feature1 method will print "object doesn't implement
> feature1".

Indeed. In this case, it would be better to *not* catch the exception. 
At least, the traceback will make clear where the AttributeError comes from.

>  Attempting to isolate the attributeError we care
> about looks like this:
> 
>    try:
>        m = myobj.feature1
>    except AttributeError:
>        print "object doesn't implement feature1"
>    else:
>        m()

Which might raise a TypeError if myobj.feature1 is not callable !-)

> That's just too messy compared with the has_attr method that
> goes like this:
>        
>    if has_attr(myobj,'feature1'):
>        myobj.feature1()
>    else:
>        print "object doesn't implement feature1"   
> 
> However, I don't like that alot because you've got to supply
> the method name twice: once as a string and once as the method
> name.
> 
> What's the cleanest way to call a method that might not be
> there?

m = getattr(myobj, 'feature1', None)
if callable(m):
   m()
else:
   print "%s doesn't implement feature1()" % myobj




From hniksic at xemacs.org  Mon Oct 29 10:43:57 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 29 Oct 2007 15:43:57 +0100
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
Message-ID: <87hcka2d76.fsf@mulj.homelinux.net>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
writes:

> The problem is that your formulation implies (to me at least) that the
> variable is actually a kind of container for the object.

I really didn't expect it to be read that way, especially since the
sentence claims that the same instance can reside in several
variables.  If the term variable implied containment, that would not
be possible because different variables would imply different objects.

To be fair, the OP probably *did* confuse variables with containment,
and I rot13'ed my hack to avoid unnecessarily prolonging that
confusion.  However, I don't think his confusion is a consequence of
inaccurate terminology, but of an inaccurate mental model of Python
objects.  When the mental model is correct, the term "variable" works
as well as any other; when it's incorrect, using different words for
the same thing is of little help.

>>> Python's "variables" are name=>object bindings.
>>
>> No reason to use quotes. 
>
> Yes, there's one : to mark the difference between Python-like
> name=>object bindings and C-like labels-on-memory-address variables
> the latter model being the most commonly known to beginners.

Are you sure about the last part?  It seems to me that in recent times
more Python beginners come from a Java background than from a C one.
In any case, "variable" is a sufficiently general concept not to be
tied to a specific implementation.  That the concept of variable
differs among programming languages is for me not reason enough to
eschew it.


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct  2 04:41:29 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 02 Oct 2007 10:41:29 +0200
Subject: Can you please give me some advice?
In-Reply-To: <MPG.216c83c3f3b24976989712@news.individual.de>
References: <mailman.1300.1191147737.2658.python-list@python.org>
	<13fuv0gh7342r27@corp.supernews.com>
	<1191173228.756531.225860@o80g2000hse.googlegroups.com>
	<46fffb38$0$30242$426a74cc@news.free.fr>
	<MPG.216c83c3f3b24976989712@news.individual.de>
Message-ID: <4702966b$0$15736$426a34cc@news.free.fr>

Thorsten Kampe a ?crit :
> * Bruno Desthuilliers (Sat, 29 Sep 2007 19:17:43 +0200)
> 
>>cmpython at gmail.com a ?crit :
>>(snip)
>>
>>>I know nothing of Ruby, but just the fact that in Ruby the Hello World
>>>program is
>>>
>>>puts 'Hello, World!'
>>>
>>>whereas the Python Hello World program is
>>>
>>>print 'Hello, World!'
>>>
>>>suggests to me that Python is more intuitive because the word "print"
>>>has a meaning in English that makes sense given what you want to do,
>>>but "puts" just doesn't.
>>
>>Hem.... Sorry, but it reminds me of the most clueless comments on Python 
>>I've seen on c.l.ruby. I really don't think Python is more or less 
>>"intuitive" than Ruby, and making a judgement on such a pointless detail 
>>is not even worth the bandswith IMHO. FWIW, 'puts' means 'put string' 
>>(implied : on stdout), which is certainly much more semantically correct 
>>than what 'print' implies.
> 
> 
> You missed the point.

Your opinion.

> "puts" for printing something to stdout

<MHO>
It's not "printing". To me, "printing" implies a printer and a piece of 
paper (or other appropriate support). It's sending bytes to some kind of 
cs abstraction known as a "stream".
</MHO>

But anyway... This is certainly enough to prove that "intuitive" is a 
*very* subjective qualifier.


From marcsgbrevkonto at gmail.com  Sun Oct  7 15:48:45 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 19:48:45 -0000
Subject: Newbie packages Q
In-Reply-To: <47091e82$0$15807$426a74cc@news.free.fr>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
	<47091e82$0$15807$426a74cc@news.free.fr>
Message-ID: <1191786525.264853.107630@k79g2000hse.googlegroups.com>

On Oct 7, 8:00 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:

>
> > And sys.path is  /python/Test/bpack
>
> And you do wonder why you can't import ? Please reread with attention
> the first and third points listed above (following the 'But anyway').
> The 'Test' package is *not* in your sys.path.

I can say yes to the first:
The atest.py is in the right dir/package.
And the third. If it is not good enough that this /python/Test/bpack
is in the path.
Then I can not understand the package thing.

I also tried to put /python/ and /python/Test in the sys.path same
result.

What am I missing in the intra-package references. Can anyone provide
at working example?



From bdesth.quelquechose at free.quelquepart.fr  Wed Oct 31 18:32:48 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 31 Oct 2007 23:32:48 +0100
Subject: Method needed for skipping lines
In-Reply-To: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
References: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
Message-ID: <472902bc$0$14504$426a74cc@news.free.fr>

Gustaf a ?crit :
> Hi all,
> 
> Just for fun, I'm working on a script to count the number of lines in 
> source files. Some lines are auto-generated (by the IDE) and shouldn't 
> be counted. The auto-generated part of files start with "Begin VB.Form" 
> and end with "End" (first thing on the line). The "End" keyword may 
> appear inside the auto-generated part, but not at the beginning of the 
> line.
> 
> I imagine having a flag variable to tell whether you're inside the 
> auto-generated part, but I wasn't able to figure out exactly how. Here's 
> the function, without the ability to skip auto-generated code:
> 
> # Count the lines of source code in the file
> def count_lines(f):
>  file = open(f, 'r')

1/ The param name is not very explicit.
2/ You're shadowing the builtin file type.
3/ It migh be better to pass an opened file object instead - this would 
make your function more generic (ok, perhaps a bit overkill here, but 
still a better practice IMHO).

>  rows = 0

Shouldn't that be something like 'line_count' ?

>  for line in file:
>    rows = rows + 1

Use augmented assignment instead:
      rows += 1

>  return rows

You forgot to close the file.

> How would you modify this to exclude lines between "Begin VB.Form" and 
> "End" as described above?

Here's a straightforward solution:

def count_loc(path):
   loc_count = 0
   in_form = False
   opened_file = open(path)
   try:
     # striping lines, and skipping blank lines
     for line in opened_file:
       line = line.strip()
       # skipping blank lines
       if not line:
         continue
       # skipping VB comments
       # XXX: comment mark should not be hardcoded
       if line.startswith(';'):
         continue
       # skipping autogenerated code
       if line.startswith("Begin VB.Form"):
         in_form = True
         continue
       elif in_form:
         if line.startswith("End"):
             in_form = False
         continue
       # Still here ? ok, we count this one
       loc_count += 1
   finally:
     opened_file.close()
   return loc_count

HTH

PS : If you prefer a more functional approach
(warning: the following code may permanently damage innocent minds):

def chain(*predicates):
     def _chained(arg):
         for p in predicates:
             if not p(arg):
                 return False
         return True
     return _chained

def not_(predicate):
     def _not_(arg):
         return not predicate(arg)
     return _not_

class InGroupPredicate(object):
     def __init__(self, begin_group, end_group):
         self.in_group = False
         self.begin_group = begin_group
         self.end_group = end_group

     def __call__(self, line):
         if self.begin_group(line):
             self.in_group = True
             return True
         elif self.in_group and self.end_group(line):
             self.in_group = False
             return True # this one too is part of the group
         return self.in_group

def count_locs(lines, count_line):
     return len(filter(
                chain(lambda line: bool(line), count_line),
                map(str.strip,lines)
            ))

def count_vb_locs(lines):
     return count_locs(lines, chain(
                 not_(InGroupPredicate(
                     lambda line: line.startswith('Begin VB.Form'),
                     lambda line: line.startswith('End')
                 )),
             lambda line: not line.startswith(';')
           ))

# and finally our count_lines function, greatly simplified !-)
def count_lines(path):
     f = open(path)
     try:
         return count_vb_locs(f)
     finally:
         f.close()

(anyone on doing it with itertools ?-)


From besturk at gmail.com  Thu Oct 18 12:09:06 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 09:09:06 -0700
Subject: Convert string to command..
In-Reply-To: <5npe2qFjhdjpU1@mid.uni-berlin.de>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
Message-ID: <1192723746.476620.244430@e34g2000pro.googlegroups.com>

On Oct 18, 6:57 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Abandoned wrote:
> > On Oct 18, 6:35 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> >> Abandoned wrote:
> >> > On Oct 18, 6:14 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> >> >> Abandoned wrote:
> >> >> > Thanks you all answer..
> >> >> > But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
> >> >> > (100.000 elements)
> >> >> > Is there any easy alternative ?
>
> >> >> How big? How slow? For me, a 10000-element list takes  0.04 seconds to
> >> >> be parsed. Which I find fast.
>
> >> >> Diez
>
> >> > 173.000 dict elements and it tooks 2.2 seconds this very big time for
> >> > my project
>
> >> Where does the data come from?
>
> >> Diez
>
> > Data come from database..
> > I want to cache to speed up my system and i save the dictionary to
> > database for speed up but eval is very slow for do this.
> > Not: 2.2 second only eval operation.
>
> Does the dictionary change often?
>
> And you should store a pickle to the database then. Besides, making a
> database-query of that size (after all, we're talking a few megs here) will
> take a while as well - so are you SURE the 2.2 seconds are a problem? Or is
> it just that you think they are?
>
> Diez- Hide quoted text -
>
> - Show quoted text -

I'm very confused :(
I try to explain main problem...
I have a table like this:
id-1 | id-2 | value
23     24       34
56     68       66
56     98       32455
55     62       655
56     28       123
.... ( 3 millions elements)

I select where id=56 and 100.000 rows are selecting but this took 2
second. (very big for my project)
I try cache to speed up this select operation..
And create a cache table:
id-1 | all
56    {68:66, 98:32455, 62:655}

When i select where id 56 i select 1 row and its took 0.09 second but
i must convert text to dictionary..

Have you got any idea what can i do this conver operation ?
or
Have you got any idea what can i do cache for this table ?



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct 19 06:14:58 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 19 Oct 2007 12:14:58 +0200
Subject: Convert string to command..
In-Reply-To: <ff9r5h$jjj$02$1@news.t-online.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>	<5npa5cFj5bvfU1@mid.uni-berlin.de>	<1192720007.177063.194550@i13g2000prf.googlegroups.com>	<5npbjbFio7g9U1@mid.uni-berlin.de>	<1192720659.272611.320900@v29g2000prd.googlegroups.com>	<5npcq3Fjgi5nU1@mid.uni-berlin.de>	<1192722434.921870.112350@k35g2000prh.googlegroups.com>	<5npe2qFjhdjpU1@mid.uni-berlin.de>	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
	<ff9r5h$jjj$02$1@news.t-online.com>
Message-ID: <471883a2$0$28571$426a74cc@news.free.fr>

Peter Otten a ?crit :
(snip)
> Before you go on with your odd caching schemes -- is the database properly
> indexed? Something like
> 
> CREATE UNIQUE INDEX mytable_id1_id2 ON mytable (id-1, id-2);
> 
> (actual syntax may differ) might speed up the lookup operation
> enough that you can do without caching.

Im my arms(tm) ! At least some sensible advice...



From lukasz.f24 at gmail.com  Fri Oct 19 06:51:08 2007
From: lukasz.f24 at gmail.com (lukasz.f24 at gmail.com)
Date: Fri, 19 Oct 2007 03:51:08 -0700
Subject: dynamic invoke
In-Reply-To: <ffa25s$c9g$1@nemesis.news.tpi.pl>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<ffa25s$c9g$1@nemesis.news.tpi.pl>
Message-ID: <1192791068.230349.104740@e34g2000pro.googlegroups.com>

On 19 Oct, 11:45, Jarek Zgoda <jzg... at o2.usun.pl> wrote:
> lukasz.... at gmail.com napisa?(a):
>
> > Is there any way (other then eval) to invoke a method by passing
> > method name in a string.
> > It's very simple in php:
> > $oFoo = new Foo();
> > $dynamiMethod = "bar";
> > $oFoo->$dynamiMethod();
>
> > Unfortunately I can't find a good solution to do the same thing in
> > python. Does it have some build-in function to do it?
>
> foo = getattr(module_or_object, 'function_name')
> foo()
>
> --
> Jarek Zgoda
> Skype: jzgoda | GTalk: zg... at jabber.aster.pl | voice: +48228430101
>
> "We read Knuth so you don't have to." (Tim Peters)

Superb!
I was lookig for something like this. Belive me or not but i spent
lots of time looking for this simple solution :)

Cheers.



From max at alcyone.com  Sun Oct 14 16:26:27 2007
From: max at alcyone.com (Erik Max Francis)
Date: Sun, 14 Oct 2007 13:26:27 -0700
Subject: Order of tuples in dict.items()
In-Reply-To: <47122790$0$8421$db0fefd9@news.zen.co.uk>
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
Message-ID: <nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>

Will McGugan wrote:

> If I have two dictionaries containing identical values, can I be sure 
> that the items() method will return tuples in the same order?
> 
> I tried an experiment with CPython and it does appear to be the case.
> 
>  >>> a=dict(a=1, b=1, c=2)
>  >>> b=dict(c=2, a=1, b=1)
>  >>> a
> {'a': 1, 'c': 2, 'b': 1}
>  >>> b
> {'a': 1, 'c': 2, 'b': 1}
>  >>> a.items()
> [('a', 1), ('c', 2), ('b', 1)]
>  >>> b.items()
> [('a', 1), ('c', 2), ('b', 1)]
> 
> Can I rely on this behavior?

Probably not.  Dictionaries do not have an ordering that you should 
count on.  In practice, the order in which you get the items if you 
iterate over a dictionary is dependent on the hashing function, which 
can potentially change over time.

This is a case where most implementations _probably_ will return 
identical dictionaries in the same order when iterated over (of course, 
different implementations will have different orderings, but you don't 
care about that), but I wouldn't take the chance and rely on such an 
implementation detail.

If you want to keep track of the order in which objects were added to a 
dictionary, you'll need to keep a separate list of (sorted) keys, which 
is easy enough.  If you're lazy there are plenty of recipes around for 
things like `SortedDictionary` or `sorteddict`.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   The public cannot be too curious concerning the characters of public
    men. -- Samuel Adams


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct 17 16:05:36 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 17 Oct 2007 22:05:36 +0200
Subject: Noob questions about Python
In-Reply-To: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
Message-ID: <47166b47$0$5248$426a74cc@news.free.fr>

Ixiaus a ?crit :
> I have recently (today) just started learning/playing with Python. So
> far I am excited and impressed

Welcome onboard then !-)

> (coming from PHP background).
 >
> I have a few questions regarding Python behavior...
> 
> val = 'string'
> li = list(val)
> print li.reverse()
> 
> returns nothing, but,
> 
> val = 'string'
> li = list(val)
> li.reverse()
> print li
> 
> returns what I want. Why does Python do that?

list.reverse (like list.sort) is a destructive in-place operation. Not 
returning the object is reminder of the destructive nature of the 
operation. That's a design choice, whether you agree with it or not 
(FWIW, I don't, but I live with it !-)

Note that there's also the reverse() function that returns a reverse 
iterator over any sequence, so you could also do:

li = list('allo')
print ''.join(reverse(li))

> Also I have been playing around with Binary math and noticed that
> Python treats:
> 
> val = 00110
> 
> as the integer 72 instead of returning 00110, why does Python do that?

Literal integers starting with '0' (zero) are treated as octal. It's a 
pretty common convention (like 0x for hexa). FWIW, PHP does just the 
same thing.

> (and how can I get around it?)

You can't. Python has no literal notation for binary integers so far. 
Literal notation for binary ints is not a common feature anyway.

HTH


From jcd at sdf.lonestar.org  Mon Oct 22 06:54:13 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Mon, 22 Oct 2007 06:54:13 -0400
Subject: if..else stmt
In-Reply-To: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
References: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
Message-ID: <471C8155.708@sdf.lonestar.org>

Your else statement is incorrectly indented.  The interpreter treats it
as part of the for-loop construct inside the if statement rather than as
part of the if statement itself.  See the recent thread about for-else
constructs for more details.

If your problem is not obvious yet, make sure you aren't mixing spaces
and tabs.

:)

bigden007 wrote:
> Hi,
> I have a if..else statement in my script. The statements all execute
> fine, but the problem is , even if the IF part of the statement is
> true, the else part executes as well. The verion of pythin i use 2.5
> Any help is appreciatiated.
>
> Regards
>
> Big Den.
>
>   



From robert.kern at gmail.com  Tue Oct 16 16:17:37 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 16 Oct 2007 15:17:37 -0500
Subject: numpy : efficient sum computations
In-Reply-To: <1192534699.057729.262390@v23g2000prn.googlegroups.com>
References: <1192524629.077906.76280@t8g2000prg.googlegroups.com>
	<1192534699.057729.262390@v23g2000prn.googlegroups.com>
Message-ID: <ff3697$62o$1@ger.gmane.org>

TG wrote:
> Okay, another one which I don't have answer for.
> 
> it is the reverse case, sort of :
> 
>> phi.shape (x,y)
>> d.shape (a,b)
> 
> I want to return m :
>> m.shape = (x,y,a,b)
> with
> m[x,y] = d * phi[x,y]
> 
> currently, my code is :
>> m = empty(phi.shape + d.shape)
>> m[:,:] = d
> 
> this repeats the matrix d x*y times, which is what I want. But now, if
> I do :
>> m[:,:] = d * phi[:,:]
> in order to multiply each "d" by a specific value of "phi", it doesn't
> work.
> 
> <type 'exceptions.ValueError'>: shape mismatch: objects cannot be
> broadcast to a single shape
> 
> Right now I'm stuck here. If anyone can help, I would be glad.

Use broadcasting to get the desired behavior. It's a widely used feature of
numpy that takes some getting used to, but it is quite powerful. Here is some
documentation:

  http://www.scipy.org/EricsBroadcastingDoc

It still references Numeric, numpy's predecessor, but the concepts are still
valid. Use the numpy.newaxis object to add new axes to phi and d in the right
places, then multiply them together:


In [8]: from numpy import arange, newaxis

In [9]: phi = arange(5*4).reshape((5,4))

In [10]: phi.shape
Out[10]: (5, 4)

In [11]: d = arange(3*2).reshape((3,2))

In [12]: d.shape
Out[12]: (3, 2)

In [13]: m = phi[:,:,newaxis,newaxis] * d[newaxis,newaxis,:,:]

In [14]: m.shape
Out[14]: (5, 4, 3, 2)

In [17]: m[1, 2]
Out[17]:
array([[ 0,  6],
       [12, 18],
       [24, 30]])

In [18]: d * phi[1, 2]
Out[18]:
array([[ 0,  6],
       [12, 18],
       [24, 30]])

In [19]: for i in range(phi.shape[0]):
   ....:     for j in range(phi.shape[1]):
   ....:         assert (m[i,j] == d*phi[i,j]).all()
   ....:
   ....:

In [20]:

-- 
Robert Kern

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



From hniksic at xemacs.org  Thu Oct 18 11:26:55 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 17:26:55 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
Message-ID: <873aw830lc.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> 173.000 dict elements and it tooks 2.2 seconds this very big time
> for my project

If you're generating the string from Python, use cPickle instead.
Much faster:

>>> import time
>>> d = dict((i, i+1) for i in xrange(170000))
>>> len(d)
170000
>>> s=repr(d)
>>> t0 = time.time(); d2 = eval(s); t1 = time.time()
>>> t1-t0
1.5457899570465088
>>> import cPickle as pickle
>>> s = pickle.dumps(d, -1)
>>> len(s)
1437693
>>> t0 = time.time(); d2 = pickle.loads(s); t1 = time.time()
>>> t1-t0
0.060307979583740234
>>> len(d2)
170000

That is 25x speedup.  Note that cPickle's format is binary.  Using the
textual format makes for more readable pickles, but reduces the
speedup to "only" 9.5x on my machine.


P.S.
Before someone says that using pickle is unsafe, remember that he is
considering *eval* as the alternative.  :-)


From larry.bates at websafe.com  Wed Oct 10 16:54:42 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 10 Oct 2007 15:54:42 -0500
Subject: for loop question
In-Reply-To: <mailman.38.1192046903.927.python-list@python.org>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
Message-ID: <0Lydndtot-GPoZDanZ2dnUVZ_gGdnZ2d@comcast.com>

Tim Chase wrote:
>> test = u"Hello World"
>>
>> for cur,next in test:
>>     print cur,next
>>
>> Ideally, this would output:
>>
>> 'H', 'e'
>> 'e', 'l'
>> 'l', 'l'
>> 'l', 'o'
>> etc...
>>
>> Of course, the for loop above isn't valid at all. I am just giving an
>> example of what I'm trying to accomplish. Anyone know how I can 
>> achieve the
>> goal in the example above? Thanks.
> 
> A "works-for-me":
> 
>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
>  >>> for a,b in pairs:
> ...     print a,b
> ...
> H e
> e l
> l l
> l o
> o
>   w
> w o
> o r
> r l
> l d
>  >>>
> 
> -tkc
> 
> 
> 
import itertools

test = u"Hello World"
ltest=["'%s'" % c for c in test]

for a, b in itertools.izip(ltest, ltest[1:]):
     print x, y

'H' 'e'
'e' 'l'
'l' 'l'
'l' 'o'
'o' ' '
' ' 'W'
'W' 'o'
'o' 'r'
'r' 'l'
'l' 'd'

-Larry


From cadet.bramble at gmail.com  Mon Oct  1 21:04:13 2007
From: cadet.bramble at gmail.com (bramble)
Date: Tue, 02 Oct 2007 01:04:13 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
Message-ID: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>

What is the backstory to why Python includes Tk bindings, as opposed
to some other set of bindings?

I've written a few little Tkinter-based apps, and it's nice and
simple. I like it well enough. That said though, I keep feeling the
gravitational pull toward GTK+. I've been meaning to get the whole
glade+gtk+python thing happening with my own projects, as soon as time
allows. Is there resistance in the upper Python echelons to GTK
because of its LGPL licensing?

Reading Alex's Nutshell book, right off the bat he comments that "The
most popular Python GUI toolkit today is probably wxPython". But then
he goes on for 45 pages on Tkinter... Seems like he wanted to write
that chapter on wx instead...

WxWidgets, the last time I looked at it, seemed awfully like MS
Window's MFC. The licensing seemed vague at the time, and it looks
like wx contains an extra layer of GUI library, so I didn't spend any
real time on it. But, regardless, it seems to get good press among
python folk (I think I remember ESR noting how it was his GUI toolkit
of choice).

PyQt has had that issue (IIRC) about needing to pay for it for
commercial apps, so I can see how there might be resistance to it
being considered the "standard Python GUI toolkit".

So, it would seem to me that Tkinter *might* remain in Python proper,
but that I probably wouldn't see much effort put into it. Well, the
Python standard library docs tell a different story. There's stuff in
there about Tix, ScrolledText, turtle, and then the "other GUI
packages" doc page goes on about Python megawidgets (Tk-based) and
Tkinter3000 Widget Construction Kit (WCK). Wow. Looks like Tkinter is
still having serious support -- even though in that same doc at the
bottom notes, "PyGTK, PyQt, and wxPython, all have a modern look and
feel and far more widgets and better documentation than Tkinter."

So, that leaves me wondering, why is Tkinter still getting so much
focus in the Python standard library?

Maybe a better question is, how has Tk managed to keep beating up the
newer, more modern, more featureful, better documented toolkits
encroaching on his territory? What's Tk's secret weapon?



From tim at timgolden.me.uk  Sun Oct  7 13:30:36 2007
From: tim at timgolden.me.uk (Tim Golden)
Date: Sun, 07 Oct 2007 18:30:36 +0100
Subject: How to create a file on users XP desktop
In-Reply-To: <47090D86.5080805@tim.thechases.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>	<1191735169.441525.106060@o80g2000hse.googlegroups.com>	<4708CAF4.7020206@bigfoot.com>
	<47090D86.5080805@tim.thechases.com>
Message-ID: <470917BC.3000609@timgolden.me.uk>

Tim Chase wrote:
>> You are assuming the system is not localized, that won't work if you
>> distribute your applications internationally. In my system it is not
>> "Desktop", it is "Escritorio", and I guess it will vary with every
>> locale. Does someone know a way to find out what name does the desktop
>> have?
> 
> I believe you need to read the Desktop value from
> 
> """
> HKEY_CURRENT_USER\software\microsoft\windows\currentversion\explorer\shell
> folders
> """
> 
> which should (in my understanding) hold the full path of the
> particular folder(s) of interest at that location, including
> across localizations.
> 
> -tkc

Ideally, use the shell API exposed by pywin32:

<code>
from win32com.shell import shell, shellcon

desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)

</code>

For slight convenience:

   http://timgolden.me.uk/python/winshell.html

TJG


From amjadcsu at gmail.com  Tue Oct 30 14:45:17 2007
From: amjadcsu at gmail.com (amjadcsu at gmail.com)
Date: Tue, 30 Oct 2007 11:45:17 -0700
Subject: Parsing xml file in python
In-Reply-To: <5opbmcFo3an1U1@mid.uni-berlin.de>
References: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
	<5opbmcFo3an1U1@mid.uni-berlin.de>
Message-ID: <1193769917.594712.87990@k35g2000prh.googlegroups.com>

That XML is just a snapshot
I am not getting into the xml parser. The error is not generated but
also the /root/yhpc-2.0/ganglia.txt does not contain anything.




On Oct 30, 12:32 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> amjad... at gmail.com schrieb:
>
>
>
> > I am a newbie in python
> > I am trying to parse a xml file and write its content in a txt file.
> > The txt contains null elements. Any reason what  iam doing wrong here
>
> > Here is the code that i wrote
>
> > import sys,os
> > import xml.sax
> > import xml.sax.handler
> > from xml.sax.handler import ContentHandler
> > from xml.sax import make_parser
>
> > class gmondxmlparse (ContentHandler):
>
> >     def __init__(self,searchTerm):
> >         self.searchTerm=searchTerm;
>
> >     def startElement(self,name,attrs):
>
> >         if name=="HOST":
> >             self.hostname=attrs.get('NAME',"")
> >             self.IP=attrs.get('IP',"")
> >         elif name=="METRIC":
> >             self.metricname=attrs.get('NAME', "")
> >             self.metricvalue=attrs.get('VAL',"")
> >             self.metrictype=attrs.get('TYPE',"")
> >             self.metricunit=attrs.get('UNITS',"")
> >         return
>
> >     def endElement(self,name):
> >         if name=="HOST" and self.searchTerm==self.hostname:
> >             try:
> >                 fh=open('/root/yhpc-2.0/ganglia.txt' ,'w')
> >             except:
> >                 print "File /root/yhpc-2.0/ganglia.txt can not be
> > open"
> >                 sys.exit(1)
> >             fh.write("This is a test for xml parsing with python with
> > chris and amjad \n")
> >             fh.write("the host name is", self.hostname, "\n")
> >             fh.write("the ip address is", self.IP, "\n")
> >             fh.close()
>
> > searchTerm="HOST"
> > parser=make_parser()
> > curHandler=gmondxmlparse(searchTerm)
> > parser.setContentHandler(curHandler)
> > parser.parse(open("/root/yhpc-2.0/gmond.xml"))
>
> > Here is the sample of xml file
>
> > Here is the  xmk file called gmond.xml
> > <HOST NAME="192.168.10.163" IP="192.168.10.163" REPORTED="1193689455"
> > TN="0" TMAX="20" DMAX="0" LOCATION="unspecified"
> > GMOND_STARTED="1193170061">
> > <METRIC NAME="cpu_num" VAL="2" TYPE="uint16" UNITS="CPUs" TN="994"
> > TMAX="1200" DMAX="0" SLOPE="zero" SOURCE="gmond"/>
>
> Without an actual error given, it's hard to know what your problem is.
>
> One thing though is noticable: your XML below isn't valid - XML has only
> one root-element.
>
> And just for the record: it appears that you work under linux using a
> root-account. Bad idea. Really.
>
> http://linuxbraindump.org/2007/08/13/the-10-commandments-for-new-linu...
>
> Diez




From istvan.albert at gmail.com  Mon Oct 22 09:05:10 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Mon, 22 Oct 2007 13:05:10 -0000
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192741486.648766.21090@e9g2000prf.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
	<1192639690.306271.298190@z24g2000prh.googlegroups.com>
	<1192661958.052525.163760@e34g2000pro.googlegroups.com>
	<mailman.176.1192721413.13605.python-list@python.org>
	<1192727792.466452.68210@v29g2000prd.googlegroups.com>
	<1192741486.648766.21090@e9g2000prf.googlegroups.com>
Message-ID: <1193058310.655620.188570@z24g2000prh.googlegroups.com>

On Oct 18, 5:04 pm, IamIan <ian... at gmail.com> wrote:
> > > The OP's problem is that he suffers from the delusion that people want
> > > to steal the source code for hisCGIscript.
>
> Why is assuming someone may try to get my source CGI delusional?
>
> I'm on a shared server (Dreamhost). The CGI itself has 755 permissions
> to execute, but what about folder permissions, etc? If you could
> expand on "access to the server, and so on" that would be great.

- as far as accessing through the web goes this is a matter of
webserver configuration, set up your webserver in a such a way that it
will not return the source code for your scripts

- regarding shared webhosting services, you may not be able to deny
access to people who have shared accounts (and shell login) on the
same server as you do. It all depends on how the shared accounts are
set up.

i.





From sndive at gmail.com  Tue Oct 16 00:03:08 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: 15 Oct 2007 21:03:08 -0700
Subject: how to print a traceback?
Message-ID: <1192484478.553534.97740@e9g2000prf.googlegroups.com>

i'm struggling to get some proxy code working with liburl[2] and want
to print
some tracebacks in my class ProxyHTTPConnection::request().
do i have to force an exception and print a backtrace in catch or
can i just print the current stack?
print_tb takes an argument and short of forcing an exception
i don;t know where to get the current backtrace object from.

thanks.



From p at ulmcnett.com  Mon Oct 15 17:25:08 2007
From: p at ulmcnett.com (Paul McNett)
Date: Mon, 15 Oct 2007 14:25:08 -0700
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>	<4713D47B.2070600@ulmcnett.com>
	<e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>
Message-ID: <4713DAB4.3020904@ulmcnett.com>

Matthieu Brucher wrote:
>     Are you aware that you can do an in-memory database (IOW no file at
>     all)?
> 
>     cur = sqlite.connect (":memory:")
> 
> 
> Yes, but in this case, how can I use the DB that I downloaded from the net ?

Ah, sorry, I guess I missed that part.

> If this is the way of using sqlite, it is still cumbersome as a lot of 
> other classes that work on files can work on file-like (and isn't it the 
> whole point of Python ;) ?

I don't think that sqlite can work on streams, or on file-like objects.

You could just save it as tempfile.mktemp(). I think the utility of this 
function in this case outweighs the possibility that your routine will 
coincidentally overwrite another file of the same name within the same 
fraction of a second. The warning is dire, but when you think about it 
in context it doesn't seem that bloody likely that there will be a 
problem. ;)


-- 
pkm ~ http://paulmcnett.com


From paddy3118 at googlemail.com  Wed Oct 17 02:43:03 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Wed, 17 Oct 2007 06:43:03 -0000
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <47153872$0$14258$426a74cc@news.free.fr>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<mailman.11.1192428714.13605.python-list@python.org>
	<47153796$0$14258$426a74cc@news.free.fr>
	<47153872$0$14258$426a74cc@news.free.fr>
Message-ID: <1192603383.614385.77530@t8g2000prg.googlegroups.com>


>
> <ot mode='private joke>'
>   story stargaming, I caught it first this time !-)
 <intrusion pedant="True">Shouldn't that be s-o-r-r-y  :-)</intrusion>
> <*ot>




From piotr at kolodziejczyk.waw.pl  Tue Oct  2 07:25:55 2007
From: piotr at kolodziejczyk.waw.pl (piotr at kolodziejczyk.waw.pl)
Date: Tue, 02 Oct 2007 11:25:55 -0000
Subject: readline() - problem
Message-ID: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>

Hi!
I'm a new user of python, and have problem.
I have a plain ascii file:
1aaaaaaaaaaaa1......1
1cccccccccccc2......1
1xxxxxxxxxxxx1......1
I want to create a new file which contains only lines with '1' on 15th
position.
I've tried this:

import string
f=open('/test/test.asc','r')
o=open('/test/out.asc','w')
for line in f:
    s= f.readline()
    if s[15]=='1' :
       o.write(s)
o.close()
f.close()

Why it doesn't work ('s' contains ' ' )?

piotr



From kw at codebykevin.com  Tue Oct 16 09:24:59 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Tue, 16 Oct 2007 09:24:59 -0400
Subject: Build Python 2.5 against Tk 8.5
Message-ID: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>

I'd like to experiment with Tk 8.5 (now in beta) in my Python 
application, but Python 2.5 requires Tk 8.4.x. What would I need to 
patch in the Python sources or build scripts to get it built against Tk 
8.5?
-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From exarkun at divmod.com  Tue Oct 23 09:16:24 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 23 Oct 2007 09:16:24 -0400
Subject: pure python data compression (zip)
In-Reply-To: <87wsteknf7.fsf@querer.allevents.ch>
Message-ID: <20071023131624.8162.823471241.divmod.quotient.26830@ohm>

On Tue, 23 Oct 2007 14:47:40 +0200, Rene Maurer <rmnet at mailc.net> wrote:
>Hallo
>
>I wonder if there are any pure python implementations available/known
>for the zip (or any other) data compression... As far as I know
>python's zlib uses http://www.zlib.net/, which is written in
>C. Unfortunately this is not solution for me, because my target "only"
>has a python interpreter....
>
>I have "googled" for a while, but I don't have found anything useful.

What is your target, that it can only run programs written in Python,
not C?  And what Python interpreter are you using?

Jean-Paul


From bignose+hates-spam at benfinney.id.au  Fri Oct 26 19:12:53 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 27 Oct 2007 09:12:53 +1000
Subject: Proposal: Decimal literals in Python.
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
Message-ID: <87tzodii6i.fsf@benfinney.id.au>

Matimus <mccredie at gmail.com> writes:

> The trailing L [for 'long' literals] is going away in Python 3.0.

Yes. On the other hand, we are gaining '0bNNNN' for binary literals,
to go along with '0oNNNN' for octal and '0xNNNN' for hexadecimal.

So, the original poster might get further by proposing an '0dNNN.NNN'
syntax for 'decimal.Decimal' literals. At least the syntax would be
consistent and wouldn't add a new punctuation character to the
language...

> For your consideration may I suggest a '$' prefix.

... unlike this one.

-- 
 \     "The illiterate of the future will not be the person who cannot |
  `\     read. It will be the person who does not know how to learn."  |
_o__)                                                 -- Alvin Toffler |
Ben Finney


From namesagame-usenet at yahoo.com  Tue Oct 16 16:57:59 2007
From: namesagame-usenet at yahoo.com (gamename)
Date: Tue, 16 Oct 2007 20:57:59 -0000
Subject: ctypes & Wrapping Complex Datatypes
In-Reply-To: <5nju1mFiilfrU5@mid.uni-berlin.de>
References: <1192536861.684885.16140@q3g2000prf.googlegroups.com>
	<5nju1mFiilfrU5@mid.uni-berlin.de>
Message-ID: <1192568279.909445.49630@q5g2000prf.googlegroups.com>

On Oct 16, 6:52 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Tue, 16 Oct 2007 06:47:06 -0700, gamename wrote:
> > I've just started using ctypes and so far, its great.  But I'm running
> > to some problems with complex datatypes.  I'm not sure how to wrap
> > something like this:
>
> >    /* This defines the Handle type in a header file.  I don't think
> > this needs wrapping, its just to show the handle definition for
> > context*/
> >     typedef struct DFFTSHandle_s *DFFTSHANDLE;
> > ...
> >   /* Then, the handle is used like this later on.  This *is* what I
> > want to wrap.*/
> >     status = DFFTSCreateSession(&Handle);
> >     status = DFFTSSetSessionOption(Handle, DFFTSOPT_ITERATIONS,
> > &iteration, sizeof(iteration));
>
> If this "handle" is always just treated as a pointer to an opaque data
> structure you may just use a void pointer.
>
> Ciao,
>         Marc 'BlackJack' Rintsch

OK.  Thanks.
-T



From duncan.booth at invalid.invalid  Tue Oct  2 10:06:45 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 2 Oct 2007 14:06:45 GMT
Subject: access __doc__ from within function without reference to function
	name
References: <1191331567.944636.263140@y42g2000hsy.googlegroups.com>
Message-ID: <Xns99BD994E2FFA0duncanbooth@127.0.0.1>

SanPy <jhmsmits at gmail.com> wrote:

> So basically, my question is: is there a way to access a function from
> within itself without using its name?
> 
Not really, no. Python is executing a code block, it has no idea which 
function referenced that code block.

You can get the current code object quite easily (inspect.currentframe
().f_code), but the reference from function to code is one way: a single 
code object could be used by multiple functions.

You can get the source code though, so if you are desperate enough you 
could try parsing the source code to extract the docstring:

   print inspect.getsource(inspect.currentframe())

Use the name of the function, that's the best way.


From jeff at jmcneil.net  Sat Oct 20 13:24:45 2007
From: jeff at jmcneil.net (Jeff McNeil)
Date: Sat, 20 Oct 2007 13:24:45 -0400
Subject: cgi scripts in Mac OS X
In-Reply-To: <8BEF967A-9935-4C52-82D0-99051EA9895B@mac.com>
References: <8BEF967A-9935-4C52-82D0-99051EA9895B@mac.com>
Message-ID: <82d28c40710201024t60152836ja956bdbc08d2bb80@mail.gmail.com>

Your web server needs to be told to execute Python scripts.  You can
handle it a few different ways, depending on your environment.

1. Place your .py script inside of a ScriptAlias'd /cgi-bin/ directory
which will force it to be executed.

2. Rename your .py script to .cgi and add an 'AddHandler cgi-script
.cgi' to your Apache configuration

3. Add an AddHandler cgi-script .py to your Apache configuration.

This of course assumes that Apache is configured in a way that would
allow execution and whatnot.  Do yourself a favor and give
'http://httpd.apache.org/docs/2.2/howto/cgi.html' a read over as it's
going to cover a lot more than I just did.

Jeff

On 10/20/07, Brian Shine <brianshine at mac.com> wrote:
> I'm trying to get cgi scripts to work.  I can link to the python
> script, but instead of running and producing an output, it prints the
> script on the page.  I've obviously missed a step in setting it up,
> but I can't see what it is.
>
> Thanks in advance,
> Brian Shine
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From arturklis4 at gmail.com  Thu Oct 11 17:13:08 2007
From: arturklis4 at gmail.com (arturklis4 at gmail.com)
Date: Thu, 11 Oct 2007 21:13:08 -0000
Subject: Top 10 Caribbean island destinations
Message-ID: <1192137188.121863.212020@19g2000hsx.googlegroups.com>

See the most popular Caribbean island destinations

http://tropical-destinations.blogspot.com/



From stef.mientki at gmail.com  Fri Oct  5 17:40:07 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Fri, 05 Oct 2007 23:40:07 +0200
Subject: howto kill a windows process by name ?
Message-ID: <4706AF37.3000901@gmail.com>

hello,

is there a library to kill a windows process by name ?

thanks,
Stef Mientki


From aaron.watters at gmail.com  Mon Oct 15 11:28:56 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Mon, 15 Oct 2007 15:28:56 -0000
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <7xsl4grhv0.fsf@ruckus.brouhaha.com>
References: <mailman.59.1192065699.927.python-list@python.org>
	<7xtzoynm64.fsf@ruckus.brouhaha.com>
	<1192108745.766895.156050@19g2000hsx.googlegroups.com>
	<7xlka9629c.fsf@ruckus.brouhaha.com>
	<1192123786.851903.102830@v3g2000hsg.googlegroups.com>
	<7xsl4grhv0.fsf@ruckus.brouhaha.com>
Message-ID: <1192462136.809155.112650@e34g2000pro.googlegroups.com>

On Oct 12, 2:01 am, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
> aaron.watt... at gmail.com writes:
> That's reasonable speed, but is that just to do the set intersections
> and return the size of the result set, or does it retrieve the actual
> result set?  It only showed 20 results on a page.  I notice that each
> book in the result list has an ID number.  Say those are stored fields
> in Nucular: how long does it take to add up all the ID numbers for the
> results of that query?  I.e. the requirement is to actually access
> every single record in order to compute the sum.  This is similar to
> what happens with faceting.

Adding up the id numbers would be fast (since you have them
after you've evaluated the query), but finding the median title
would be slower, which is what I think you had in mind.  Yes, pulling
in the the complete description for every document in the result set
would
probably be much slower with a disk based index
(because you would have to seek all over the
index files).  Of course if you are using the flash drive you
mentioned it
might not be that slow either... and it looks like this is the
direction
things are going...

> ....Heh, check out the benchmark graphs:
>
>  http://www.tomshardware.com/2006/09/20/conventional_hard_drive_obsole...

My point exactly :)...  Thanks again
  -- Aaron Watters

====
give me chocolate
and no one gets hurt.
  (from a tee shirt)



From tgrav at mac.com  Tue Oct  9 10:30:22 2007
From: tgrav at mac.com (Tommy Grav)
Date: Tue, 9 Oct 2007 10:30:22 -0400
Subject: List loops
Message-ID: <E3F77D14-E7C1-45D9-A53D-2F6F27A57BFF@mac.com>

Hi everyone,

   I have a list of objects where I have want to do two loops.
I want to loop over the list and inside this loop, work on all
the elements of the list after the one being handled in the outer
loop. I can of course do this with indexes:

 >>> alist = range(3)
 >>> for i in xrange(len(alist)):
...   for j in xrange(i+1,len(alist)):
...     print i,j,alist[i],alist[j]
...
0 1 0 1
0 2 0 2
1 2 1 2
 >>>


Is there a way to do this without using indexes?

Cheers
    Tommy





From ralf at schoenian-online.de  Tue Oct 23 03:55:31 2007
From: ralf at schoenian-online.de (=?ISO-8859-1?Q?Ralf_Sch=F6nian?=)
Date: Tue, 23 Oct 2007 09:55:31 +0200
Subject: basic web auth and verification
In-Reply-To: <1193116441.563894.218650@v23g2000prn.googlegroups.com>
References: <1193116441.563894.218650@v23g2000prn.googlegroups.com>
Message-ID: <471da78f@news.arcor-ip.de>

scripteaze at gmail.com schrieb:
> Trying to figure out how to add login verfication. I believe it is
> logging me in, but theres no way to really tell..any ideas? or
> tutorials out there that can exaplain this to me?
> 
> Thanks
> 
> import urllib,urllib2,cookielib
> 
> passlst = open(passfile, 'r').readlines()
> url="http://somesite"
> cj = cookielib.LWPCookieJar()
> opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
> urllib2.install_opener(opener)
> TheForm = urllib.urlencode({"username":"myid","password":"mypas"})
> request = urllib2.Request(url, TheForm)
> result = urllib2.urlopen(request)
> html=result.read()
> result.close()
> 

I had the same trouble. There was a redirect after login a had to 
follow. Look at the following code.

     def login(self):
         ''' Log into web site. '''

         self._br.set_handle_redirect(True)
         cj = CookieJar()
         self._br.set_cookiejar(cj)
         self._br.open(Config.urlLogin)
         self._br.select_form(name='login')

         self._br['session_key'] = Config.username
         self._br['session_password'] = Config.password
         response=self._br.submit()
         self._br.set_response(response)
         for link in self._br.links(url_regex="www.somesite.com"):
             self._br.follow_link(link)
         if 'Sign In' in self._br.title():
             raise ValueError('Wrong password')


Regards,
Ralf Schoenian


From steven.bethard at gmail.com  Tue Oct  9 13:17:47 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 09 Oct 2007 11:17:47 -0600
Subject: ANN: generator_tools-0.1 released
In-Reply-To: <1191914480.705611.118330@d55g2000hsg.googlegroups.com>
References: <1191914480.705611.118330@d55g2000hsg.googlegroups.com>
Message-ID: <JbydnehhPNsmKpbanZ2dnUVZ_tOtnZ2d@comcast.com>

Kay Schluehr wrote:
> Originally I came up with the idea of a pure Python implementation for
> copyable generators as an ActiveState Python Cookbook recipe. Too bad,
> it was badly broken as Klaus M?ller from the SimPy project pointed
> out. Two weeks and lots of tests later I got finally a running version
> that works not only in the very most simple use cases. As the code
> size increased it turned out to not really fit anymore into the
> "recipe" category and I created a package called "generator_tools".
> 
> generator_tools-0.1 is available for both Python 2.5 and Python 3.0
> (!)
[snip]
>>>> pickler = GeneratorPickler("test.pkl")
>>>> pickler.pickle_generator(g_gen)
>>>> k_gen = pickler.unpickle_generator()
>>>> list(g_gen) == list(k_gen)
> True

This seems like an odd syntax for pickling. Does the package support the 
normal pickle machinery?  That is, does it register the appropriate 
methods with the copy_reg module?

STeVe


From kyosohma at gmail.com  Tue Oct 16 16:50:06 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 16 Oct 2007 20:50:06 -0000
Subject: How to find imported modules
In-Reply-To: <1192567603.939767.142850@y27g2000pre.googlegroups.com>
References: <1192567603.939767.142850@y27g2000pre.googlegroups.com>
Message-ID: <1192567806.272507.136800@e34g2000pro.googlegroups.com>

On Oct 16, 3:46 pm, Johny <pyt... at hope.cz> wrote:
> My Main program imports several other smaller programs.
> for example
> Main.py
> imports
> Program1.py
> Program2.py
> ...
> Program50.py
>
> Now I need to find out which  of Programs imports a particular module
> - module timesocket.py
> Is that possible without opening each program?
> Thanks
> B.

It is with grep on *nix, or you could download baregrep for windows,
which is what I use when I need to know this sort of thing.

Mike



From fetchinson at googlemail.com  Thu Oct 25 12:41:45 2007
From: fetchinson at googlemail.com (Daniel Fetchinson)
Date: Thu, 25 Oct 2007 18:41:45 +0200
Subject: python project ideas
In-Reply-To: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <fbe2e2100710250941r22577e4byc1572451ee011d83@mail.gmail.com>

> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group.
> May be something useful for open source or python community ...
> Well, just post what you think could be appropriate ...

Hi, have you tried this:

http://wiki.python.org/moin/CodingProjectIdeas

Cheers,
Daniel


From paul at subsignal.org  Mon Oct 15 07:13:48 2007
From: paul at subsignal.org (paul)
Date: Mon, 15 Oct 2007 13:13:48 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
Message-ID: <fevi1a$can$1@ger.gmane.org>

Dmitri O.Kondratiev schrieb:
> Gary, thanks for lots of info!
> Python strings are not lists! I got it now. That's a pity, I need two
> different functions: one to reverse a list and one to reverse a string:
Not necessarily, you can handle both cases in one function:

def reverse(xs):
   if xs in [[], '']:
     return xs
   return (reverse (xs[1:])) + [xs[0], [xs[0]]][isinstance(list, xs)]

but this is evil(tm) and violates Rule #1, #2 of "import this" and 
several others.


> Ok. Now regarding in-place reversal of a list:
  why this ? :
> 
>>>> ls = [1,2,3].reverse()
>>>> ls
>>>>
>>>> print [1,2,3].reverse()
> None
> I mean, why ls is empty after assignment?
That's what "in-place" means, [].reverse() changes the list in-place and 
does not return the list to the caller.

cheers
  Paul



From gandalf at shopzeus.com  Tue Oct  9 15:25:38 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Tue, 09 Oct 2007 21:25:38 +0200
Subject: Static variable vs Class variable
In-Reply-To: <13gngt29ovvcld1@corp.supernews.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
Message-ID: <470BD5B2.9060706@shopzeus.com>

Steven D'Aprano wrote:
> On Tue, 09 Oct 2007 19:23:37 +0200, Diez B. Roggisch wrote:
>
>   
>> Your believes aside, this is simply wrong. The statement
>>
>> a += x
>>
>> always leads to a rebinding of a to the result of the operation +.
>>     
>
> Not true.
>   
Hmm. Or you can write __iadd__ to rebind the name to the same object 
again? I think usually there is not much difference between "rebinding 
to the same object" and "not rebinding". But as we have seen, sometimes 
there is a difference. I think that Diez made his statement because it 
is possible to rebind from __iadd__ to a different object. So it is more 
safe to think that "inplace operations" will always rebind, than to 
think they will never rebind.

I'm not sure about the language level. It is told that "+=" is an 
inplace operator, but how "in place" is defined? If we say "an inplace 
operator will change the state of an object, and will never create a new 
object" then "+=" is NOT an inplace operator. Well, at least not when 
you watch it from the language level. But what about the implementation 
level? Here is an example:

a = 1
a+= 1 # The compiler will probably optimize this and the Python bytecode 
interpreter will not rebind 'a' here, just increment the integer in memory.

This topic starts to be very interesting. Language lawyers and 
developers, please help us! How "in place operator" is defined in 
Python? What makes it an "in place operator"? Is it the syntax, or what?

    Laszlo



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 31 18:39:37 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 31 Oct 2007 22:39:37 -0000
Subject: Print a list to a string?
References: <1193869068.254703.209450@y42g2000hsy.googlegroups.com>
Message-ID: <13ii11976u48bda@corp.supernews.com>

On Wed, 31 Oct 2007 22:17:48 +0000, mrstephengross wrote:

> I would like to get the results of a print operation placed in a string.

s = str(x)


If you specifically need to capture the output of print, then something 
like this:


>>> import cStringIO
>>> s = cStringIO.StringIO()
>>> print >>s, [1, 2, 1.0/5, 'hello world']
>>> s.getvalue()
"[1, 2, 0.20000000000000001, 'hello world']\n"


(And please, please, PLEASE don't ask why 1/5 is 0.2000...01 until you've 
read the FAQs on the Python website. Thank you.)



-- 
Steven


From mensanator at aol.com  Tue Oct 30 19:03:31 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 30 Oct 2007 16:03:31 -0700
Subject: choose from a list
In-Reply-To: <1193782113.429067.132740@57g2000hsv.googlegroups.com>
References: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
	<1193770225.374384.52290@k79g2000hse.googlegroups.com>
	<1193782113.429067.132740@57g2000hsv.googlegroups.com>
Message-ID: <1193785411.032673.147860@v3g2000hsg.googlegroups.com>

On Oct 30, 5:08 pm, barronmo <barro... at gmail.com> wrote:
> Thanks to both of you for the help.  I made several of the changes you
> suggested and am getting the results in the format I want, eg:
>
> 0  387  John Smith
> 1  453  Jane Smith
> 2  975  Joe Smithton
>
> My plan at this point is, in addition to printing the results of the
> query, to create a list with a matching index so the user can select a
> name and I can store the patient_ID to get other parts of their
> medical record.  Does this sound reasonable?

Don't you already have this list, called 'result'?

Once the user selects the index (let's say in a variable indx),
can't you build a SQL query to select records from other
tables (presumably keyed by patient_ID)?

Something like (made up)

cursor.execute("""
SELECT patient_ID, lab, test, test_result
FROM   labtests
WHERE  patient_ID=?""",
(result[indx]['patient_ID']))


>
> My code now looks like this:
>
> import MySQLdb
>
> def name_find(namefrag):
>
>      conn = MySQLdb.connect(host = "localhost",
>           user = "root",
>           passwd = "Barron85",
>           db = "meds")
>      cursor = conn.cursor(MySQLdb.cursors.DictCursor)
>      cursor.execute("SELECT patient_ID, firstname, lastname FROM
> demographics WHERE lastname LIKE '%s%%'" % (namefrag))
>
>      result = cursor.fetchall()
>      for index, row in enumerate(result):
>           print "%d %s   %s %s" % (index, row["patient_ID"],
> row["firstname"], row["lastname"])
>           #create list here
>
>      cursor.close()
>      conn.close()
>
> Thanks again, Mike




From gagsl-py2 at yahoo.com.ar  Fri Oct 19 17:50:20 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 18:50:20 -0300
Subject: Problem with format string / MySQL cursor
References: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
	<1192736676.035569.188300@e9g2000prf.googlegroups.com>
	<mailman.189.1192738097.13605.python-list@python.org>
	<1192740053.589994.109050@q5g2000prf.googlegroups.com>
	<13hgqs4fdq7h76e@corp.supernews.com>
Message-ID: <op.t0gr96vpx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 05:32:04 -0300, Dennis Lee Bieber  
<wlfraed at ix.netcom.com> escribi?:

> On Thu, 18 Oct 2007 13:40:53 -0700, Florian Lindner
> <Florian.Lindner at xgm.de> declaimed the following in comp.lang.python:

>> That works! Thanks! But a weird error message for this solution...
>
> 	Not really... The MySQLdb adapter converts all parameters to
> properly delimited STRINGS (I don't know of any SQL system that passes
> /binary/ numerics). But MySQLdb also uses Python % formatting to then

I'd say the opposite: only poorly implemented systems convert numeric  
arguments to text.
*Real* bound variables are passed as pointers. The SQL sentence can be  
prepared and re-used with different sets of values several times, without  
having to re-parse it again and again.
If the MySQLdb adapter actually converts and inserts the arguments itself  
into the supplied SQL sentence, generating a new string for each call,  
this advantage -and many others- are cancelled, defeating the purpose of  
bound variables.

-- 
Gabriel Genellina



From nospam at nospam.com  Tue Oct 16 00:58:21 2007
From: nospam at nospam.com (Mark T)
Date: Mon, 15 Oct 2007 21:58:21 -0700
Subject: View XMLRPC Requests/Responses?
References: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
Message-ID: <kY-dnYdwj-5z2YnanZ2dnUVZ_vWdnZ2d@comcast.com>


"xkenneth" <xkenneth at gmail.com> wrote in message 
news:1192460878.597651.64680 at k35g2000prh.googlegroups.com...
> Hi,
>
>    I'm working on developing an XML-RPC interface from LabVIEW to
> python and I would really like to see how python is forming it's XML-
> RPC requests/responses. Is there any way I can force these to a log or
> print them to the screen? Thanks.
>
> Regards,
> Ken
>

www.wireshark.org

-Mark T. 



From paul.hankin at gmail.com  Wed Oct 31 20:04:51 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 01 Nov 2007 00:04:51 -0000
Subject: Method needed for skipping lines
In-Reply-To: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
References: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
Message-ID: <1193875491.983722.239270@y42g2000hsy.googlegroups.com>

On Oct 31, 5:02 pm, Gustaf <gust... at algonet.se> wrote:
> Hi all,
>
> Just for fun, I'm working on a script to count the number of lines in source files. Some lines are auto-generated (by the IDE) and shouldn't be counted. The auto-generated part of files start with "Begin VB.Form" and end with "End" (first thing on the line). The "End" keyword may appear inside the auto-generated part, but not at the beginning of the line.
>
> I imagine having a flag variable to tell whether you're inside the auto-generated part, but I wasn't able to figure out exactly how. Here's the function, without the ability to skip auto-generated code:
>
> # Count the lines of source code in the file
> def count_lines(f):
>   file = open(f, 'r')
>   rows = 0
>   for line in file:
>     rows = rows + 1
>   return rows
>
> How would you modify this to exclude lines between "Begin VB.Form" and "End" as described above?

First, your function can be written much more compactly:
def count_lines(f):
    return len(open(f, 'r'))


Anyway, to answer your question, write a function that omits the lines
you want excluded:

def omit_generated_lines(lines):
    in_generated = False
    for line in lines:
        line = line.strip()
        in_generated = in_generated or line.starts_with('Begin
VB.Form')
        if not in_generated:
             yield line
        in_generated = in_generated and not line.starts_with('End')

And count the remaining ones...

def count_lines(filename):
    return len(omit_generated_lines(open(filename, 'r')))

--
Paul Hankin



From f.guerrieri at gmail.com  Thu Oct 11 11:50:02 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Thu, 11 Oct 2007 17:50:02 +0200
Subject: Finding Peoples' Names in Files
In-Reply-To: <felg5m$rta$1@solaris.cc.vt.edu>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
Message-ID: <79b79e730710110850g470d678fke9b481b8221c6aff@mail.gmail.com>

On 10/11/07, brad <byte8bits at gmail.com> wrote:
> cokofreedom at gmail.com wrote:
> > On Oct 11, 5:22 pm, brad <byte8b... at gmail.com> wrote:
> >> Crazy question, but has anyone attempted this or seen Python code that
> >> does? For example, if a text file contained 'Guido' and or 'Robert' and
> >> or 'Susan', then we should return True, otherwise return False.
> >
> > Can't you just use the string function .findall() ?
> >
>
> I mean *any* possible person's name... I don't *know* the names
> beforehand :)


"I cannot combine some characters

dhcmrlchtdj

      which the divine Library has not foreseen and which in one of
its secret tongues do not contain a terrible meaning. No one can
articulate a syllable which is not filled with tenderness and fear,
which is not, in one of these languages, the powerful name of a god."

Jorge Luis Borges, The Library of Babel


From roger.miller at nova-sol.com  Mon Oct  1 15:40:17 2007
From: roger.miller at nova-sol.com (Roger Miller)
Date: Mon, 01 Oct 2007 12:40:17 -0700
Subject: Limits on search length
In-Reply-To: <mailman.1354.1191259433.2658.python-list@python.org>
References: <mailman.1354.1191259433.2658.python-list@python.org>
Message-ID: <1191267617.117956.64800@o80g2000hse.googlegroups.com>

Since you are getting the regular expression pattern via an argument I
would first check that searchPattern is what you expect. Shells can do
funny things with arguments containing special characters.  Also, is
it possible that the quoted strings in the files contain escapes?  For
example if a file contains the text "hello\n" would you consider that
6 characters or 7?



From nick at craig-wood.com  Fri Oct 26 09:30:15 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Fri, 26 Oct 2007 08:30:15 -0500
Subject: bug: subprocess.Popen() hangs
References: <1193328043.071424.252080@o38g2000hse.googlegroups.com>
Message-ID: <slrnfi3o8o.8e0.nick@irishsea.home.craig-wood.com>

Jonathan Amsterdam <jbamsterdam at gmail.com> wrote:
>  This is a bug in python 2.4 under Linux 2.6.
> 
>  I occasionally see subprocess.Popen() fail to return, and I have
>  finally figured out roughly what's going on. It involves the GC and
>  stderr.

Interesting

Do you have a program to demonstrate the problem?

You are best off reporting bugs here - then they won't get lost!

  http://bugs.python.org/

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From steven.bethard at gmail.com  Mon Oct 29 19:35:12 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 29 Oct 2007 17:35:12 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193691850.854354.301970@d55g2000hsg.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
	<1193691850.854354.301970@d55g2000hsg.googlegroups.com>
Message-ID: <YYKdnQPGBbas87vanZ2dnUVZ_jmdnZ2d@comcast.com>

Fuzzyman wrote:
> On Oct 22, 6:43 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
>> # Inherit from object. There's no reason to create old-style classes.
> 
> We recently had to change an object pipeline from new style classes to
> old style. A lot of these objects were being created and the *extra
> overhead* of new style classes was killing us. :-)

I'm curious.  Was it memory or speed overhead that was the problem?

Steve


From thorsten at thorstenkampe.de  Fri Oct 19 04:12:42 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Fri, 19 Oct 2007 09:12:42 +0100
Subject: Noob: Loops and the 'else' construct
References: <1192761867.254928.115300@i38g2000prf.googlegroups.com>
	<mailman.196.1192763502.13605.python-list@python.org>
Message-ID: <MPG.218277463f27c68f989715@news.individual.de>

* Gabriel Genellina (Fri, 19 Oct 2007 00:11:18 -0300)
> En Thu, 18 Oct 2007 23:44:27 -0300, Ixiaus <parnell.s at comcast.net>  
> escribi?:
> > I have just come across a site that discusses Python's 'for' and
> > 'while' loops as having an (optional) 'else' structure.
> >
> > At first glance I interpreted it as being a bit like the 'default'
> > structure in PHP's switch block... But the switch block isn't a loop,
> > so, I am now confused as to the reason for using 'else' with the for
> > and while loops...
> >
> > A few quick tests basically show that statements in the else structure
> > are executed at the fulfillment of the loop's expression (ie, no
> > break).
> 
> A `while` loop tests a condition: if it evaluates to true, keep cycling;  
> if it is false, stop. The `else` clause is executed when the condition is  
> false, as in any `if` statement. If you exit the loop by using `break`,  
> the `else` part is not executed (because you didn't get out of the loop by  
> determining the condition falseness)

So a for/else loop is exactly the same thing as a for loop with the 
else clause outside the loop (except for "break")? Guess that's why I 
never used that...

Thorsten


From goldtech at worldpost.com  Sun Oct  7 07:58:46 2007
From: goldtech at worldpost.com (goldtech)
Date: Sun, 07 Oct 2007 04:58:46 -0700
Subject: How to create a file on users XP desktop
In-Reply-To: <1191731680.601997.275010@r29g2000hsg.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191731680.601997.275010@r29g2000hsg.googlegroups.com>
Message-ID: <1191758326.322201.142520@50g2000hsm.googlegroups.com>


>
>  This is really a Windows question, not a Python question. You should
> have been able to figure it out yourself by examining existing
> environment variables.

I agree, you're right. I learn more by figuring out the code myself.

After Google briefly:  In a DOS box type: SET

This was too easy - sorry.



>  Something like the code below should work for you if the standard
> environment variables haven't been hosed.
> ----------
> import os
> Filename = os.getenv("HOMEDRIVE") + os.getenv("HOMEPATH") + "\\Desktop
> \MyNewFile"
> f = file(Filename, "w")
> f.write("Here's a file on the desktop\n")
> f.close()




From python.list at tim.thechases.com  Sun Oct  7 08:18:20 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 07 Oct 2007 07:18:20 -0500
Subject: Putting a line from a text file into a variable, then moving
	to next line
In-Reply-To: <LT3Oi.122049$Xa3.24034@attbi_s22>
References: <LT3Oi.122049$Xa3.24034@attbi_s22>
Message-ID: <4708CE8C.5050803@tim.thechases.com>

> I'm not really sure how readline() works. Is there a way to iterate 
> through a file with multiple lines and then putting each line in a 
> variable in a loop?

You can use readlines() to get the whole line (including the
newline):

  lines = file('x.txt').readlines()

or you can iterate over the file building a list without the newline:

  lines = [line.rstrip('\n') for line in file('x.txt')]

Thus, line[0] will be the first line in your file, line[1] will
be the second, etc.

-tkc






From nospam at nospam.fr  Tue Oct 16 04:07:34 2007
From: nospam at nospam.fr (jean-michel bain-cornu)
Date: Tue, 16 Oct 2007 10:07:34 +0200
Subject: Simple HTML template engine?
In-Reply-To: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <47147166$0$25938$ba4acef3@news.orange.fr>

> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
> 
> No need for caching, template compilation, etc.
> 
> Speed is not a major issue.
> 
> I just need looping and conditionals. Template inheritance would be a
> bonus.

I have written my own a couple of years ago. It is very simple (just one 
script with no dependancies) and doesn't offer conditionals and inheritance.
The documentation is here : http://www.jmbc.fr/balloondoc/index.html
and you can download at : 
http://sourceforge.net/project/showfiles.php?group_id=162003

I hope this will be helpful.
jm


From zachREMOVE at MEin.tu-clausthal.de  Mon Oct  1 05:37:44 2007
From: zachREMOVE at MEin.tu-clausthal.de (Gabriel Zachmann)
Date: Mon, 01 Oct 2007 11:37:44 +0200
Subject: Bug with lists of pairs of lists and append()
In-Reply-To: <5_cLi.230301$5E1.185721@reader1.news.saunalahti.fi>
References: <fdjj0o$2oit$1@ariadne.rz.tu-clausthal.de>
	<5_cLi.230301$5E1.185721@reader1.news.saunalahti.fi>
Message-ID: <fdqf50$jbd$3@ariadne.rz.tu-clausthal.de>

Thanks a lot for your response, too.
Best regards,
Gabriel.

-- 
______________________________________________________________
Life is so constructed that the event does not, cannot,
will not match the expectation.             (Charlotte Bronte)
______________________________________________________________
  zach in.tu-clausthal.de      __@/'    www.gabrielzachmann.org
______________________________________________________________


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 17 18:08:58 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 18 Oct 2007 00:08:58 +0200
Subject: negative base raised to fractional exponent
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
	<mailman.104.1192587133.13605.python-list@python.org>
	<1192622126.725230.136570@i13g2000prf.googlegroups.com>
Message-ID: <5nnffrFiib88U1@mid.individual.net>

 schaefer.mp at gmail.com wrote:

> Thank you for this. Now I need to somehow express this as a real
> number. For example, I can transform the real and imaginary parts
> into a polar coordinate giving me the value I want:
> 
> z = sqrt( real_part**2 + imaj_part**2 )
> 
> but this is an absolute terms. 

Not really. It is just the "absolute value" which is a property of
the complex number; it is (as already stated) by definition always
positive. There doesn't exist any underlying "real" value from
which a sign is stripped to yield the absolute value of z.

> How does one determine the correct sign for this value?

In this case, the background (what you model using this complex
number) is of great importance. 

Consider learning more about complex numbers; especially about how
they can be represented as a point on the complex plane
(<http://en.wikipedia.org/wiki/Complex_plane>), understanding this
makes understanding and dealing with complex numbers much easier. 

Regards,


Bj?rn

-- 
BOFH excuse #31:

cellular telephone interference



From goldtech at worldpost.com  Mon Oct  8 10:09:59 2007
From: goldtech at worldpost.com (goldtech)
Date: Mon, 08 Oct 2007 14:09:59 -0000
Subject: Tkinter text widget
In-Reply-To: <1191769207.108962.65980@w3g2000hsg.googlegroups.com>
References: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
	<1191769207.108962.65980@w3g2000hsg.googlegroups.com>
Message-ID: <1191852599.044533.176620@o80g2000hse.googlegroups.com>

On Oct 7, 11:00 am, Simon Forman <sajmik... at gmail.com> wrote:
> On Oct 6, 11:18 pm, goldtech <goldt... at worldpost.com> wrote:
>
>
>
> > I thought the "DISABLED" made it so I could not edit it. But it also
> > makes it so I can not scroll down. If you make the window smaller than
> > the content then try to put a cursor in there to use up/down arrow you
> > can't.
>
> > What I want is not to be able to change text content, but no other
> > action is disabled. Is this complicated to do?
>
> > Thanks.
>
> > from Tkinter import *
> > root = Tk()
> > text = Text(root, font=("Courier"))
> > text.pack()
> > i='123456789abcdefghijklmnopqrstuvwxyz\n'
> > for x in range(30):
> >     text.insert(END, i)
> > text.config(state=DISABLED)
> > mainloop()
>
> I just tried this script.  You can select text and if you drap the
> selection outside the window then scrolling occurs, also Tk's default
> behavior of scrolling with the middle button still works (i.e. click-
> and-drag with the middle button to scroll.)

Yes, if I depress the mouse's scroll wheel (the middle button) I can
drag the content up/down. Interesting...I didn't know that. But I
can't select, XP Python 2.1.

I'll try adding scroll bars. Thanks.

...snip...



From gnuist006 at gmail.com  Tue Oct  9 02:33:24 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 06:33:24 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <470b1aa6$0$79886$742ec2ed@news.sonic.net>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1aa6$0$79886$742ec2ed@news.sonic.net>
Message-ID: <1191911604.169846.244430@r29g2000hsg.googlegroups.com>

On Oct 8, 11:07 pm, Bakul Shah <use... at bitblocks.com> wrote:
> gnuist... at gmail.com wrote:
>
>  > Again I am depressed to encounter a fundamentally new concept that I
>  > was all along unheard of.
>
> The concept is 37 years old.  Wadsworth in his "Continuation
> Revisited" paper says he & Strachey were struggling with
> extending the technique of denotational semantics to describe
> jumps and not finding a satisfactory answer.  Then, in his
> words:
>
>    in October 1970 Strachey showed me a paper "Proving
>    algorithms by tail functions" by Mazurkiewicz [2] which he
>    had obtained from an IFIP WG2.2 meeting. Just the phrase
>    "tail functions" in the title was enough -- given the
>    experience of our earlier struggles -- for the ideas to
>    click into place! The (meaning of the) "rest of the program"
>    was needed as an argument to the semantic functions -- just
>    so those constructs that did not use it, like jumps, could
>    throw it anyway. The term "continuation" was coined as
>    capturing the essence of this extra argument (though I
>    often wished to have a shorter word!) and the rest, as they
>    say, is history.
>
>  > Its not even in paul graham's book where i
>  > learnt part of Lisp. Its in Marc Feeley's video.
>  >
>  > Can anyone explain:
>  >
>  > (1) its origin
>  > (2) its syntax and semantics in emacs lisp, common lisp, scheme
>  > (3) Is it present in python and java ?
>  > (4) Its implementation in assembly. for example in the manner that
>  > pointer fundamentally arises from indirect addressing and nothing new.
>  > So how do you juggle PC to do it.
>  > (5) how does it compare to and superior to a function or subroutine
>  > call. how does it differ.
>  >
>  > Thanks a lot.
>  >
>  > (6) any good readable references that explain it lucidly ?
>
> You might like this one:
>
> http://www.intertwingly.net/blog/2005/04/13/Continuations-for-Curmudg...

thanks for the link but can you plz upload the paper so we can also
get it.



From software at ginstrom.com  Fri Oct 26 23:32:03 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Sat, 27 Oct 2007 12:32:03 +0900
Subject: Finding decorators in a file
In-Reply-To: <1193447658.249597.178110@57g2000hsv.googlegroups.com>
References: <1193447658.249597.178110@57g2000hsv.googlegroups.com>
Message-ID: <000c01c81849$f11bcf70$0203a8c0@MOUSE>

> On Behalf Of Andrew West
> Basically what I'm looking for is a way to, given a python file, look 
> through that file and find all the decorators and the associated 
> functions, that includes any arguments that the decorator has.

The inspect module has a function called "findsource"

import inspect
import my_module

lines, line_num = inspect.findsource(my_module)

decorated_lines = [num
		   for num, line in enumerate(lines)
		   if line.strip().startswith("@")]

Probably a little more complicated than that -- like what if a function has
two decorators? -- but I think the basic idea will work.

Regards,
Ryan Ginstrom



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 11 12:38:29 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 11 Oct 2007 18:38:29 +0200
Subject: Advice on long running processes
In-Reply-To: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>
References: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>
Message-ID: <470e5147$0$1275$426a74cc@news.free.fr>

commander_coder at hotmail.com a ?crit :
> Hello,
> 
> I write a lot of CGI scripts, in Python of course.  Now I need to
> convert some to long-running processes.  I'm having trouble finding
> resources about the best practices to do that.
> 
> I've found a lot of email discussions that say something like, "You
> need to educate yourself about the differences when you have long-
> running processes" but I've not had a lot of luck with finding things
> that explain the differences.  I've seen some talk about database
> timeouts, for instance, but I'm not sure I understand the problems.
> Can anyone here suggest some resources?  I'd be happy with web sites,
> with buying a book, anything.
> 
> I ask here because I write in Python and so if those resources used
> Python then that would be super.

As far as I'm concerned, I'd go for one of the available wsgi frameworks.


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 18 08:26:28 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 14:26:28 +0200
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
Message-ID: <471750f4$0$18469$426a74cc@news.free.fr>

Debajit Adhikary a ?crit :
> I have two lists:
> 
> a = [1, 2, 3]
> b = [4, 5, 6]
> 
> What I'd like to do is append all of the elements of b at the end of
> a, so that a looks like:
> 
> a = [1, 2, 3, 4, 5, 6]
> 
> I can do this using
> 
> map(a.append, b)

And what about a.extend(b) ?

> How do I do this using a list comprehension?

Why would you want a list comp here ???

> (In general, is using a list comprehension preferable (or more
> "pythonic") as opposed to using map / filter etc.?)

Depends. Anyway, the pythonic solution here is to use the appropriate 
list method !-)



From lew at lewscanon.com  Sun Oct 21 18:11:57 2007
From: lew at lewscanon.com (Lew)
Date: Sun, 21 Oct 2007 18:11:57 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192998506.251127.172530@v29g2000prd.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
	<471b64b2$0$90272$14726298@news.sunsite.dk>
	<1192980705.698811.128060@i38g2000prf.googlegroups.com>
	<PYqdnQWoU7yl6YbanZ2dnUVZ_qOknZ2d@comcast.com>
	<1192998506.251127.172530@v29g2000prd.googlegroups.com>
Message-ID: <f6KdnYc5tvQwU4banZ2dnUVZ_gudnZ2d@comcast.com>

llothar wrote:
> On 21 Okt., 22:45, Lew <l... at lewscanon.com> wrote:
> 
>> Evidence is that TeX development is dead.
> 
> Exactly and Knuths only contribution to software development was the
> theory of
> "literate" programming. As i said for me algorithms are not software
> development,
> this is programming in the small (something left for coding apes), not
> programming
> in the large. There are no problems anymore with programming the
> small, sure you
> can try to develop Judy Arrays or another more optimized sorting
> algorithm, but
> this has no real world effect. It is theoretical computer science -
> well a few
> people seem to like this.
> 
> And as an evidence that this theory works ("literate" programming) -
> there is no
> easy prove about efficient workflow - was his TeX program where only
> some parts
> are handled like this. But drawing an conclusion from a "developement
> dead"
> project to other "in development" projects is just sorry: fucking
> stupid.

No, I conclude that literate programming works from the prevalence of tools 
like Javadoc and Doxygen, and the Sun and MS coding standards documents.  I 
see the direct benefits in my own work every day.

Proposing a straw-man argument then knocking it down with mere purple prose 
like "just sorry: [sic] fucking stupid" is, sorry, just fucking stupid.  See? 
  No logic there at all.  Thus proving that there's no logic there at all.

> Everythink in the real world says that "literate" programming is not
> useable.

Rrr?  "Everythink" does, eh?  Maybe what the world needs instead is literate 
programmers, then.

Cite some specifics, please?  And remember, when you say "everything" that 
even one counter-example disproves.

There is evidence that aspects of "literate" programming do work.  Besides, 
that a theory is wrong is part of science, not a denigration of the scientist. 
  Even a wrong theory, like Newtonian mechanics, advances the science (e.g., 
physics) and is evidence that the scientist (Isaac Newton) is a genius.  Like 
Donald Knuth.

> Sure if you are an academic guy you can do endless post-mortem
> analysis you might
> find this amazing but it is just as worthless for the real world as a
> guy building
> a copy of the Eiffel tower from burned matches - a pure hobby.

So you say, again with just rhetoric and complete lack of evidence or argument 
to support the outrageous assertion.  Many people, myself included, have seen 
your so-called "real world" benefit significantly from academic results. 
Object-oriented programming is an example.  The fertilization works both ways; 
check out how the science of computer graphics expanded thanks to LucasFilms.

Try using reason, logic and evidence for your points instead of merely 
shouting obscenities, hm?

-- 
Lew


From diprat7 at gmail.com  Tue Oct  2 14:45:53 2007
From: diprat7 at gmail.com (diprat7 at gmail.com)
Date: Tue, 02 Oct 2007 11:45:53 -0700
Subject: wana watch latest hindi hot videos?
Message-ID: <1191350753.841276.255040@n39g2000hsh.googlegroups.com>

wana watch latest hindi hot videos?
than www.yedil.com is the site you are looking for
have a nice time with www.yedil.com .Log on now



From nomail at noserve  Sun Oct 28 08:12:46 2007
From: nomail at noserve (martyw)
Date: Sun, 28 Oct 2007 13:12:46 +0100
Subject: Need some help...
In-Reply-To: <1193572607.910074.317980@22g2000hsm.googlegroups.com>
References: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
	<1193572607.910074.317980@22g2000hsm.googlegroups.com>
Message-ID: <47247cbe$0$30327$9a622dc7@news.kpnplanet.nl>

bearophileHUGS at lycos.com wrote:
>> I want to create a program that I type in a word.
> 
> You can see that Python has a command to input strings from the
> command line.
> 
>> chaos
>> each letter equals a number....
>> A=1
>> B=20
>>  and so on.
>> So Chaos would be
>> C=13 H=4 A=1 O=7 S=5
>> I want to then have those numbers
>> 13+4+1+7+5 added together to be 30.
>> How can I do that?
> 
> Python has a dictionary data structure called dict(), or {}, that you
> can use to map your letters to those numbers. With it you can created
> the letter-number association.
> 
> Then you can scan the characters of the input string one after the
> other, and sum their values into a single total value. Try writing
> that code, and then show it to us, we can give more suggestions if you
> need them...
> 
> Bye,
> bearophile
> 
as an alternative for the suggest dictionary approach you could study 
the built in functions ord() and chr(), see the documentation 
(http://docs.python.org/lib/built-in-funcs.html)


From bscrivener42 at gmail.com  Tue Oct 30 09:27:59 2007
From: bscrivener42 at gmail.com (BartlebyScrivener)
Date: Tue, 30 Oct 2007 13:27:59 -0000
Subject: python2.5 and mysqldb
In-Reply-To: <fg5ccd$om$1@solaris.cc.vt.edu>
References: <1193674960.082948.179940@22g2000hsm.googlegroups.com>
	<fg5ccd$om$1@solaris.cc.vt.edu>
Message-ID: <1193750879.730359.255230@22g2000hsm.googlegroups.com>

On Oct 29, 2:30 pm, brad <byte8b... at gmail.com> wrote:

> or get a
> more flexible OS that easily allows for this sort of thing (like Debian)

Second that. Etch came with 2.3 and 2.4, and I added 2.5 and they
never bother each other.

rd




From bozonm at vscht.cz  Sun Oct  7 08:45:19 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Sun, 07 Oct 2007 14:45:19 +0200
Subject: Putting a line from a text file into a variable,
	then moving to next line
References: <LT3Oi.122049$Xa3.24034@attbi_s22>
Message-ID: <pan.2007.10.07.12.45.19.536579@vscht.cz>

On Sun, 07 Oct 2007 12:00:44 +0000, Vernon Wenberg III wrote:

> I'm not really sure how readline() works. Is there a way to iterate 
> through a file with multiple lines and then putting each line in a 
> variable in a loop?

There are always more ways how to do it.. one of them is:

f = open(filename)
for line in f:
    # you may then strip the newline:
    line = line.strip('\n')
    # do anything you want with the line 
f.close()


From jeffstatin at yahoo.com  Sun Oct 21 15:00:02 2007
From: jeffstatin at yahoo.com (jeffstatin at yahoo.com)
Date: Sun, 21 Oct 2007 12:00:02 -0700
Subject: errors while building a program with Python
In-Reply-To: <mailman.286.1192987884.13605.python-list@python.org>
References: <1192985563.490275.269130@q5g2000prf.googlegroups.com>
	<mailman.286.1192987884.13605.python-list@python.org>
Message-ID: <1192993202.092119.138100@e34g2000pro.googlegroups.com>

On Oct 21, 1:31 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Sun, 21 Oct 2007 13:52:43 -0300, <jeffsta... at yahoo.com> escribi?:
>
> > I'm trying to build a program (MixMinion) with Python 2.5.1, MSVS 2003
> > SP1 and Windows XP Home SP2 but I'm getting a couple of errors.
>
> > Here are the two errors I am getting:
> > (1) .\contrib\OpenSSL\lib\Builder5\ssleay32.lib : fatal error LNK1136:
> > invalid or corrupt file
>
> Ensure that your downloaded files are not corrupt. You could try to
> download and compile OpenSSL yourself but this may be a bit tricky; I
> think it would be a lot better to ask this directly on the MixMinion dev
> list.
>
> --
> Gabriel Genellina

You are correct on all counts.  I have already re-downloaded openssl
and the curropution error went away. I originally thought the error
was a python issue, hence  my message here.

Thank you



From carsten at uniqsys.com  Wed Oct 17 11:50:51 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 17 Oct 2007 11:50:51 -0400
Subject: HTML Parser for Jython
In-Reply-To: <47162C0D.8010800@web.de>
References: <1192634455.095171.187570@i13g2000prf.googlegroups.com>
	<47162C0D.8010800@web.de>
Message-ID: <1192636251.10116.1.camel@dot.uniqsys.com>

On Wed, 2007-10-17 at 17:36 +0200, Stefan Behnel wrote:
> Falcolas wrote:
> > Does anybody know of a decent HTML parser for Jython? I have to do
> > some screen scraping, and would rather use a tested module instead of
> > rolling my own.
> 
> Not sure if it works, but have you tried BeautifulSoup? Or maybe an older
> version of it?

Recent releases of BeautifulSoup need Python 2.3+, so they won't work on
current Jython, but BeatifulSoup 1.x will work.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From roy at panix.com  Wed Oct 17 09:54:07 2007
From: roy at panix.com (Roy Smith)
Date: Wed, 17 Oct 2007 09:54:07 -0400
Subject: Can you determine the sign of the polar form of a complex number?
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
	<1192629071.834342.243370@i38g2000prf.googlegroups.com>
Message-ID: <roy-886F6F.09540217102007@news.panix.com>

In article <1192629071.834342.243370 at i38g2000prf.googlegroups.com>,
 schaefer.mp at gmail.com wrote:

> Just to clarify what I'm after:
> 
> If you plot (-3)^n where n is a set of negative real numbers between 0
> and -20 for example, then you get a discontinuos line due to the
> problem mentioned above with fractional exponents. However, you can
> compute what the correct absolute value of the the missing points
> should be (see z2 above for an example), but I would like to know how
> to determine what the correct sign of z2 should be so that it fits the
> graph.

You need to ask this question on a math group.  It's not a Python question 
at all.


From dpflagg at earthlink.net  Wed Oct 10 15:47:36 2007
From: dpflagg at earthlink.net (termiflyer)
Date: Wed, 10 Oct 2007 12:47:36 -0700
Subject: Multidimensional sort
Message-ID: <1192045656.850158.11820@v3g2000hsg.googlegroups.com>

How do I sort this:

>>> a
[['3', ['1', '0']], ['4', ['3', '0'], ['2', '0']]]

where the list can be arbitrarily large by the 3rd dimension (i
think).  E.g.:

>>> a
[['3', ['1', '0']], ['4', ['2', '0'], ['3', '0']]]


Thanks



From dkixk at earthlink.net  Sun Oct  7 21:07:56 2007
From: dkixk at earthlink.net (Damien Kick)
Date: Sun, 07 Oct 2007 20:07:56 -0500
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
References: <87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
Message-ID: <13gj0neh59oks91@corp.supernews.com>

Roedy Green wrote:
> On Fri, 28 Sep 2007 18:27:04 -0500, Damien Kick <dkixk at earthlink.net>
> wrote, quoted or indirectly quoted someone who said :
> 
>> "free as in beer". 
>  
> but does not "free beer" nearly always come with a catch or implied
> obligation?

I had been trying to find a good Nietzsche quote about the role of debt 
in the relationship of a child to his or her parents but I could not 
seem to find a good one.  I did, however, find what I think to be an 
interesting secondary source 
<http://www.eurozine.com/articles/2007-09-20-neilson-en.html>:

<blockquote>
For Nietzsche, debt was linked to the problem of promising and 
forgetting. It would be a mistake to underestimate the importance of the 
etymological play that underlies his association of debts (Schulden) 
with guilt (Schuld). As is well known, the Second Essay of On the 
Genealogy of Morals argues that the feeling of guilt, of personal 
obligation, has its origin in the contractual relationship between 
creditor and debtor. "It was here", Nietzsche writes, "that one person 
first measured himself against another". And he continues:

Perhaps our word "man" (manas) still expresses something of precisely 
this feeling of self-satisfaction: man designated himself as the 
creature that measures values, evaluates and measures, as the "valuating 
animal as such".[1]

How today are we to understand these claims and Nietzsche's extension of 
them into arguments about the role of debt in the relations between 
parents and children or between man and the deity?
</blockquote>

Beer helps to eliminate debt by promoting forgetfulness.


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 17 08:19:55 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 17 Oct 2007 14:19:55 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <1192603383.614385.77530@t8g2000prg.googlegroups.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<mailman.11.1192428714.13605.python-list@python.org>
	<47153796$0$14258$426a74cc@news.free.fr>
	<47153872$0$14258$426a74cc@news.free.fr>
	<1192603383.614385.77530@t8g2000prg.googlegroups.com>
Message-ID: <4715fdea$0$15793$426a34cc@news.free.fr>

Paddy a ?crit :
>> <ot mode='private joke>'
>>   story stargaming, I caught it first this time !-)
>  <intrusion pedant="True">Shouldn't that be s-o-r-r-y  :-)</intrusion>

<crying>
Ouinnnn :(
</crying>

>> <*ot>
> 
> 


From pavlovevidence at gmail.com  Thu Oct  4 05:33:18 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Thu, 04 Oct 2007 02:33:18 -0700
Subject: A question about subprocess
In-Reply-To: <fe29pv$28l$3@lust.ihug.co.nz>
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
	<4704a187$1$18927$4c368faf@roadrunner.com>
	<fe29pv$28l$3@lust.ihug.co.nz>
Message-ID: <1191490398.285385.42630@n39g2000hsh.googlegroups.com>

On Oct 4, 4:55 am, Lawrence D'Oliveiro <l... at geek-
central.gen.new_zealand> wrote:
> In message <4704a187$1$18927$4c368... at roadrunner.com>, Carl Banks wrote:
>
>
>
> > On Wed, 03 Oct 2007 16:46:20 +0000, JD wrote:
>
> >> I want send my jobs over a whole bunch of machines (using ssh). The jobs
> >> will need to be run in the following pattern:
>
> >> (Machine A)   (Machine B)  (Machine C)
>
> >> Job A1             Job B1            Job C1
>
> >>  Job A2           Job B2            etc
>
> >>  Job A3          etc
>
> >>  etc
>
> >> Jobs runing on machine A, B, C should be in parallel, however, for each
> >> machine, jobs should run one after another.
>
> >> How can I do it with the subprocess?
>
> > It's not too hard if the remote jobs exit gracefully, so that ssh knows
> > when the remote job is done.
>
> It's hard to see how an _ungraceful_ exit could stop SSH from knowing when
> the remote job is done.

Clean exit might have been a better word.  Various things can cause
ssh to exit before the job is done; other things can make the process
hang around after the job is finished.  The OP needs to make sure the
job, and ssh, exit reliably enough for the given use before depending
on it.  Otherwise, resorting to things like lockfiles and timeouts may
be necessary to keep things sequential.


Carl Banks



From paul.hankin at gmail.com  Thu Oct 11 15:02:25 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 11 Oct 2007 12:02:25 -0700
Subject: Declarative properties
In-Reply-To: <5n7948Fghr61U9@mid.uni-berlin.de>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
	<5n7948Fghr61U9@mid.uni-berlin.de>
Message-ID: <1192129345.092954.244300@v3g2000hsg.googlegroups.com>

On Oct 11, 7:42 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> Sorry I don't get it.  If I want to customize the access to a "normal"
> attribute I simply turn it into a property.

I *think* I understand Artur's problem: he wants to be able to add
(for example) clean-up and validation code to public accesses of these
attributes, but he doesn't want this code run internally to the class.
Or another way of saying the same thing: he wants two views of a
variable; one internal to the class, another to the public.

If I understand correctly, his plan is to use 'X._name' internally to
code in his class, but the public uses 'X.name'. Initially, one is an
alias for the other, but later he writes getters and setters to
customise access through the public version.

[I could be totally wrong of course]
--
Paul Hankin



From Graham.Dumpleton at gmail.com  Sat Oct 27 17:34:03 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Sat, 27 Oct 2007 21:34:03 -0000
Subject: mod_python, ElementTree and Aapche 2.0
In-Reply-To: <1193500954.338574.53960@o3g2000hsb.googlegroups.com>
References: <1193500954.338574.53960@o3g2000hsb.googlegroups.com>
Message-ID: <1193520843.990126.233850@i38g2000prf.googlegroups.com>

On Oct 28, 3:02 am, Rajarshi <rajarshi.g... at gmail.com> wrote:
> Hi, this is a slightly vague question but I'm really puzzled as to
> when I write a mod_python (3.1.3) program that makes use of
> ElementTree and call it via a URL, the program simply stops when I do
> something like
>
> s = # some XML document in a string
> root = XML(s)
>
> There is no exception at all - the browser just shows a blank page
>
> But running the code outside of the web server makes it run fine.
>
> This is on a RHEL 4 machine, with Apache 2.0.52 and Python 2.3.4
>
> Has anybody ever seen this type of behavior?

Try reading:

  http://www.dscpl.com.au/wiki/ModPython/Articles/ExpatCausingApacheCrash

Graham



From sndive at gmail.com  Tue Oct 30 14:34:17 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Tue, 30 Oct 2007 18:34:17 -0000
Subject: Python Interview Questions
In-Reply-To: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
Message-ID: <1193769257.337145.117490@v3g2000hsg.googlegroups.com>


Krypto wrote:
> Hi,
>
> I have used Python for a couple of projects last year and I found it
> extremely useful. I could write two middle size projects in 2-3 months
> (part time). Right now I am a bit rusty and trying to catch up again
> with Python.
>
> I am now appearing for Job Interviews these days and I am wondering if
> anybody of you appeared for a Python Interview. Can you please share
> the questions you were asked. That will be great help to me.
>
> Thanks,

assert() in the c functions extending python ends the interview rather
quickly.
or at least it did for me @IronPort ages ago.
To be honest they have massively multithreaded app
and the last thing they needed was an appliance down because
some programmer was not sure what to do when a certain condition
arises.



From aaron.watters at gmail.com  Fri Oct 26 11:20:17 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Fri, 26 Oct 2007 15:20:17 -0000
Subject: "Standard" Full Text Search Engine
In-Reply-To: <5oe6b7FmabnbU1@mid.uni-berlin.de>
References: <mailman.475.1193402986.13605.python-list@python.org>
	<5oe6b7FmabnbU1@mid.uni-berlin.de>
Message-ID: <1193412017.774014.116860@y42g2000hsy.googlegroups.com>

On Oct 26, 8:53 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Martin Marcher wrote:
> > Hello,
>
> > is there something like a standard full text search engine?....
> > any hints?
>
> There are several python lucene implementations available, and recently here
> a project called NUCULAR turned up. And there is ZCatalog, the
> full-text-indexing technology used in Zope, but which should be usable
> outside of zope.....

Thanks for the NUCULAR mention (http://nucular.sourceforge.net).  It
certainly doesn't meet all the requirements requested (very few users
yet, some
features missing).  Please give it a look, however.  It's easy to use
and fast.  How fast it is compared to others I can't say, especially
since
some of the numbers I see quoted out there are really incredible (how
can an indexer by faster than "cp"?) -- I suspect some sort of
trickery,
frankly.

Anyway, if you want a feature like proximity searching or
some sort of internationalization support (it works with unicode, but
that's probably not enough), please let me know.  I focused on
the core indexing and retrieval functionality, and I think a lot of
additional features can be added easily.

fwiw,  -- Aaron Watters

===
% make love
don't know how to make love. stopping.



From ensiferum_ at hotmail.com  Sun Oct 21 12:25:37 2007
From: ensiferum_ at hotmail.com (enska)
Date: Sun, 21 Oct 2007 19:25:37 +0300
Subject: Endless GIL and thread confusion
Message-ID: <pan.2007.10.21.16.25.37.300233@hotmail.com>

Can someone clarify the steps needed to make access to the interpreter
safe from multiple threads?

I've been reading the docs for days and I still find them very confusing
and misleading. For example does the PyGILState_Ensure() function lock the
GIL or just create the thread state? Is thread supposed to call it once on
creation and then the release function before exiting or is this the
preferred mechanism to handle the locking? Most of the confusion stems
from this segment in the documentation.

"...when threads are created from C, they don't have the global
interpreter lock, nor is there a thread state data structure for them.
Such threads must bootstrap themselves into existence, by first creating a
thread state data structure, then acquiring the lock, and finally storing
their thread state pointer, before they can start using the Python/C API.
When they are done, they should reset the thread state pointer, release
the lock, and finally free their thread state data structure.

Beginning with version 2.3, threads can now take advantage of the
PyGILState_*() functions to do all of the above automatically." 


Anyway, currently my code looks like this:

void foobar(...) 
{
    PyGILState state = PyGILState_Ensure();

    // make python calls

    PyGILState_Release(state);
}

void blablah(...) 
{
    PyGILState state = PyGILState_Ensure();

    // make python calls

    PyGILState_Release(state);
}

My python Initialization code looks like this

void init_python(char* progname, char* bindir)
{
    Py_SetProgramName(progname);
    PyEval_InitThreads();
    Py_InitializeEx(0);
    
    char* argv[] = {progname, bindir};
    PySys_SetArgv(2, argv);
}

calling foobar() or blablah() from the main thread works as expected, but
if the second thread calls them it locks up in the call to
PyGILState_Ensure(). 

I have tried adding a call to PyEval_ReleaseLock() in the init_python
function to make sure that the main thread is not holding the GIL, but
this causes the application to segfault when it is calling Py_Finalize()
so it is clear that this is not correct.

Please advice.

Thanks.


From david at nospam.spam  Thu Oct  4 20:58:50 2007
From: david at nospam.spam (david)
Date: Fri, 05 Oct 2007 10:58:50 +1000
Subject: Starting a thread before wxPython bootup ... interesting.
In-Reply-To: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
References: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
Message-ID: <13gb3284gqn0j6b@corp.supernews.com>

Since the observed behaviour is clearly undefined,
I forgive you for the poorly specified behaviour
description: asking for a close description of random
behaviour is just ridiculous.

The most obvious point is that wx is not re-entrant
or thread safe: you have to make it so by using
wx.CallAfter()

Since you are talking about a bug in your screen
display while using a screen library, it would
also be interesting it you described the environment:
Which operating system? Which windowing system?
Which wx library? Which Python? Which IDE? What code?

[david]






Shafik wrote:
> Hello folks,
> 
> I'm having an issue with mixing wxPython and threading ... I realize
> multi-threading always introduces subtle bugs, but the following
> scenario is just odd:
> 
> I start a dummy thread, that does nothing but increment a counter and
> print its value to the screen, then afterwards, I start the wxPython
> application. I get nothing but weird behavior: sometimes the gui just
> crashes, sometimes I get an exception, sometimes it runs for a little
> but very slowly ...
> 
> Anyone know whats going on? I have a dual-core T5500, so multi
> threading is piece of cake for it hardware -wise.
> 
> 
> Cheers,
> --Shafik
> 


From bbands at gmail.com  Tue Oct 23 22:34:38 2007
From: bbands at gmail.com (BBands)
Date: Wed, 24 Oct 2007 02:34:38 -0000
Subject: name space problem
In-Reply-To: <1193181625.770328.161650@v29g2000prd.googlegroups.com>
References: <1193179470.243479.53270@q3g2000prf.googlegroups.com>
	<1193181625.770328.161650@v29g2000prd.googlegroups.com>
Message-ID: <1193193278.364108.256770@y27g2000pre.googlegroups.com>

On Oct 23, 4:20 pm, marek.ro... at wp.pl wrote:
> Hello. Indeed the doStuff function in the doStuff module can't do 'a.b
> = 0' (the double dot was just a typo, right?)

Yes.

> because it doesn't know anything about an object named a.

I was trying to understand why it worked when written in, but not when
included.

> I think the right solution would be not to use 'a' as a global
> variable, but rather to pass it as an explicit parameter to the
> function.

Does doing this make a copy of a?

> In module doStuff:
>
> def doStuff(a):
>     # some calcs
>     a.b = 0
>
> In the main module:
>
> import doStuff
> # ...
> doStuff.doStuff(a)

In my real ap a is quite large...

    thanks,

    jab



From deets at nospam.web.de  Tue Oct  9 06:15:17 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 12:15:17 +0200
Subject: Python and UML
References: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>
Message-ID: <5n12llFfhe3hU3@mid.uni-berlin.de>

 aine_canby at yahoo.com wrote:

> Hi,
> 
> I'm working with Python2.5 and pythonWin.
> 
> I'd like to start working with and learning more with UML. Can anyone
> suggest any freeware design software that I might use to do this? I
> also have
> Visio installed on my computer if thats of any use...

ArgoUML as modelling tool. The python-IDE eric also generates UML from
class-hierarchies.

IMHO UML is ... crap, at least when it comes to actual developing. But apart
from that very personal opinion, the non-static-typedness of Python makes
it hard to bring UML to it's full (however small that is in my POV) power.

Diez


From dfabrizio51 at gmail.com  Sat Oct 20 12:10:30 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Sat, 20 Oct 2007 16:10:30 -0000
Subject: what version python and wxPython comes with Mac OS X Leopard
Message-ID: <1192896630.005491.274280@e9g2000prf.googlegroups.com>

Hi All,

Does anyone know what version of Python and wxPython comes with the
new Mac OS X Leopard?

Thanks



From martin at v.loewis.de  Mon Oct  1 12:37:41 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 01 Oct 2007 18:37:41 +0200
Subject: Python and SSL
In-Reply-To: <1191251260.376954.265060@22g2000hsm.googlegroups.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
Message-ID: <47012255.4020502@v.loewis.de>

>> No, as Martin points out, Python trusts EVERY certificate, which of
>> course misses the whole point of certificates.  Whatever is making
>> your program fail is something different.
> 
> Paul, are you sure for 100%. It is hard to belive.

Not sure how many confirmations you want, but I can add another one.
Paul is 100% correct. Python's SSL module, as shipped in Python 2.5.x
and earlier, performs no verification of the server certificate
whatsoever; it will silently accept any server certificate as correct.

Regards,
Martin


From lasses_weil at klapptsowieso.net  Wed Oct  3 16:06:09 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Wed, 03 Oct 2007 22:06:09 +0200
Subject: spam kontrol
In-Reply-To: <1191435296.523842.160230@g4g2000hsf.googlegroups.com>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>
Message-ID: <4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>

George Sakkis wrote:
> On Oct 3, 12:59 pm, "oruc... at gmail.com" <oruc... at gmail.com> wrote:
>> hii
>> ? think you know spam page is the most pest for net user.
> 
> ...closely followed in the second position by incoherent misspelled
> posts in silly IM-speak.
> 
> 
You know, there are such people as non-native English speakers. Maybe 
you should consider that before possibly insulting people who do not 
derserve to be insulted (altough he does appear to be turkish).

/W
(I aplogize for that last remark. I have nothing against turkish people, 
I just couldn't let the opportunity for a mean joke slip.)


From duncan.booth at invalid.invalid  Mon Oct 29 10:27:50 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 Oct 2007 14:27:50 GMT
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
Message-ID: <Xns99D893230B22Cduncanbooth@127.0.0.1>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> 
wrote:

> In the second case, the name of the argument *is* 'object'. Which is not 
> the case for the builtin len (which, fwiw, has type 
> 'builtin_function_or_method', not 'function', so inspect.getargspec 
> couldn't tell me more).
> 
><ot>
> While we're at it, you should avoid using builtin's names for 
> identifiers - here, using 'object' as the arg name shadows the builtin 
> 'object' class).
></ot>

I think you are being a little bit unfair here: help(len) says:

len(...)
    len(object) -> integer
    
    Return the number of items of a sequence or mapping.

which implies that the argument to len has the name 'object' (although in 
fact it doesn't have a name). The OP was simply asking about the difference 
in calling conventions, not proposing to write code using 'object' as the 
argument name.


From joel.schaerer at gmail.com  Mon Oct  1 03:34:38 2007
From: joel.schaerer at gmail.com (Joel)
Date: Mon, 01 Oct 2007 00:34:38 -0700
Subject: Cross-platform time out decorator
In-Reply-To: <mailman.1188.1190926028.2658.python-list@python.org>
References: <1190802115.585306.250400@o80g2000hse.googlegroups.com>
	<1190899882.702911.44670@w3g2000hsg.googlegroups.com>
	<87k5qc18gf.fsf@mulj.homelinux.net>
	<1190907553.425261.273400@w3g2000hsg.googlegroups.com>
	<87ejgjnarq.fsf@mulj.homelinux.net>
	<mailman.1188.1190926028.2658.python-list@python.org>
Message-ID: <1191224078.930858.101280@o80g2000hse.googlegroups.com>

On Sep 27, 10:40 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> On 9/27/07, Hrvoje Niksic <hnik... at xemacs.org> wrote:
>
>
>
> > Joel <joel.schae... at gmail.com> writes:
>
> > >> Note that, unlike the original alarm code, it doesn't really interrupt
> > >> the timed-out method, it just returns the control back to the caller,
> > >> using an exception to mark that a timeout occurred.  The "timed out"
> > >> code is still merrily running in the background.  I don't know if it's
> > >> a problem in your case, but it's an important drawback.
>
> > > There should be a method to stop the thread though?
>
> > Not in Python.  Thread killing primitives differ between systems and
> > are unsafe in general, so they're not exposed to the interpreter.  On
> > Windows you can attempt to use ctypes to get to TerminateThread, but
> > you'll need to hack at an uncomfortably low level and be prepared to
> > deal with the consequences, such as memory leaks.  If the timeouts
> > happen rarely and the code isn't under your control (so you have no
> > recourse but to terminate the thread), it might be worth it though.
> > --
>
> You can use ctypes and the Python API to raise a Python exception in
> the thread.

Could you point me to an example of how to do that?

> I don't normally mention this, because it has some
> limitations, but it results in essentially the same effect as the
> signal based method. They both have the limitation that C code can't
> be interrupted.




From allen.fowler at yahoo.com  Wed Oct 10 00:03:50 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: Tue, 09 Oct 2007 21:03:50 -0700
Subject: Exceptions: Logging TB and local variables?
Message-ID: <1191989030.598822.283420@50g2000hsm.googlegroups.com>

Hi,

My code looks like this:

for item in bigset:
  self.__sub1(item)
  self.__sub2(item)
  self.__sub3(item)

# the subX functions, in turn, use various 3rd party modules.


Now, I would like to do this:

for item in bigset:
  try:
    self.__sub1(item)
    self.__sub2(item)
    self.__sub3(item)
  except StandardError:
    # Log error and continue to next item in set.
    log_error_to_file()


In the error log, I would like to record various local variables that
existed in subX at the time the Exception was thrown... (even though
the actuall exception may have been thrown from deep inside some 3rd
party module that subX called)

How can I do this?

Thank you,
Allen



From mensanator at aol.com  Wed Oct 24 01:14:11 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 23 Oct 2007 22:14:11 -0700
Subject: transforming list
In-Reply-To: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
References: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
Message-ID: <1193202851.104187.267820@q5g2000prf.googlegroups.com>

On Oct 23, 9:46?pm, james_027 <cai.hai... at gmail.com> wrote:
> hi,
>
> i have a list from a resultset like this
> 1,"Chicago Bulls",,,""
> 2,"Cleveland Caveliers",,,""
   ^                     ^^^ ^
   |                     ||| |
   1                     234 5

How come these records have 5 fields...

> 4,"Detroit Pistons",1,"23686386.35"
   ^                 ^ ^            ^
   |                 | |            |
   1                 2 3            4

...whereas these only have 4 fields?


> 4,"Detroit Pistons",2,"21773898.07"
> 4,"Detroit Pistons",3,"12815215.57"
> 4,"Detroit Pistons",4,"48522347.76"
> 4,"Detroit Pistons",5,"28128425.99"
> 4,"Detroit Pistons",6,"15681603.08"
> 4,"Detroit Pistons",8,"12627725.03"
> 4,"Detroit Pistons",9,"11417.00"
> 4,"Detroit Pistons",10,"945689.22"
> 4,"Detroit Pistons",11,"818246.57"
> 4,"Detroit Pistons",12,"1154292.77"
> 5,"Phoenix Suns",1,"23211445.97"
> 5,"Phoenix Suns",3,"11268469.53"
> 5,"Phoenix Suns",4,"49913569.61"
> 5,"Phoenix Suns",5,"26035236.09"
> 5,"Phoenix Suns",7,"113953310.50"
> 5,"Phoenix Suns",8,"17091769.84"
> 5,"Phoenix Suns",10,"818569.99"
> 5,"Phoenix Suns",11,"824602.19"
> 5,"Phoenix Suns",12,"1142018.11"
>
> and I wish to transform it into something like this
>
> 1, "Chicago Bulls", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> 2, "Cleveland Caveliers", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
> 4, "Detroit Pistons", 23686386.35, 21773898.07, 12815215.57,
> 48522347.76, 28128425.99, 15681603.08, 0, 12627725.03, 11417.00,
> 945689.22, 818246.57, 1154292.77
> 5, "Phoenix Suns", 23211445.97, 0, 11268469.53, 499113569.61,
> 26035236.09, 0, 113953310.50, 17091769.84, 0, 818569.99, 824602.19,
> 1142018.11
>
> currently my solution is something like this the rows is the original
> list which is list of list ... the report is a list of list with the
> new arrangement that I want.
>
>         report = []
>         report_item = None
>         temp_c_id = 0
>         for row in rows:
>             if not row[0] == temp_c_id:
>                 temp_c_id = row[0]
>                 if report_item: report.append(report_item)
>                 report_item = [row[0], row[1], 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0]
>             if row[2]:
>                 report_item[row[2]+1] = row[3]
>
> I feel this solution is not that good, can I make this more pythonic?!
>
> Thanks
> james :)




From whamil1 at entergy.com  Mon Oct  1 08:24:57 2007
From: whamil1 at entergy.com (Hamilton, William )
Date: Mon, 1 Oct 2007 07:24:57 -0500
Subject: sorteddict [was a PEP proposal, but isn't anymore!]
In-Reply-To: <1191088691.380960.151260@d55g2000hsg.googlegroups.com>
Message-ID: <588D53831C701746A2DF46E365C018CE01D2CB5F@LITEXETSP001.etrsouth.corp.entergy.com>

> From: thebjorn
> What's stabledict? I'm assuming that ordereddict is a mapping that
> maintains insertion order(?)

Yes, ordereddict is a dict that maintains insertion order.  Stabledict
is probably a dict that maintains _an_ order, so that repr() and the
like return the same value when used on dicts containing the same data.

> In the Smalltalk collection hierarchy SortedCollection is a subclass
> of OrderedCollection, which implies to me that it'd be better to add
> an ordereddict first.

That depends entirely on how ordereddict and sorteddict function.  If
they are similar there might be a benefit.  However, an ordereddict
would probably be best implemented with an internal list of keys,
whereas the consensus seems to be using a tree for sorteddict.  In this
case, trying to build sorteddict from ordereddict is going to give you
extra baggage and overhead for no benefit.


--
-Bill Hamilton


From kostaspaxos at yahoo.gr  Wed Oct 10 09:01:09 2007
From: kostaspaxos at yahoo.gr (Konstantinos Pachopoulos)
Date: Wed, 10 Oct 2007 14:01:09 +0100 (BST)
Subject: cannot create python packages
Message-ID: <149708.52530.qm@web25501.mail.ukl.yahoo.com>

Hi,
i have the following files:
current_dir/level1/Called.py
current_dir/Caller.py


Called.py:
-----------
class Called:
   def exec1(self):
     print "Hello"


Caller.py:
----------
from level1.Called import *

c=Called()
c.exec1()   

However it is impossible for Caller.py to find
Called.py. I even tried to place the level1 structure
inside /usr/lib/pythonX.Y/, whithout success however.
Any ideas?

Thnx


      ___________________________________________________________ 
Want ideas for reducing your carbon footprint? Visit Yahoo! For Good  http://uk.promotions.yahoo.com/forgood/environment.html


From robin at alldunn.com  Sun Oct 28 22:30:20 2007
From: robin at alldunn.com (Robin Dunn)
Date: Sun, 28 Oct 2007 19:30:20 -0700
Subject: ANNOUNCE: wxPython 2.8.6.1
Message-ID: <472545BC.2000509@alldunn.com>


Announcing
----------

The 2.8.6.1 release of wxPython is now available for download at
http://wxpython.org/download.php.  This release has a number of
important bug fixes and is a general improvement of the 2.8.6.0
release.

Source code is available, as well as binaries for Python 2.3, 2.4 and
2.5, for Windows and Mac, as well some pacakges for various Linux
distributions.  A summary of changes is listed below and also at
http://wxpython.org/recentchanges.php.


What is wxPython?
-----------------

wxPython is a GUI toolkit for the Python programming language. It
allows Python programmers to create programs with a robust, highly
functional graphical user interface, simply and easily. It is
implemented as a Python extension module that wraps the GUI components
of the popular wxWidgets cross platform library, which is written in
C++.

wxPython is a cross-platform toolkit. This means that the same program
will usually run on multiple platforms without modifications.
Currently supported platforms are 32-bit Microsoft Windows, most Linux
or other Unix-like systems using GTK2, and Mac OS X 10.3+, in most
cases the native widgets are used on each platform to provide a 100%
native look and feel for the application.


Changes in 2.8.6.1
------------------

wxMac: Fixed paste bug when the clipboard contains unicode text.

AUI: Added missing event binders for the notebok tab events.

wxMac: Fixed bug that resulted in portions of virtual listctrl's to
not be repainted when scrolling with PgUp/PgDown/Home/End.

wxMac: Fixed bug that broke tab traversal when tabbing runs into a
wx.StaticBox.

wxGTK:  Add wx.Window.GetGtkWidget.

All: Undprecated wx.ListCtrl.[G|S]etItemSpacing

All: Fixed wx.Palette constructor wrapper.  It takes three seqences of
integers to specify the R, G, and B values for each color in the
palette, which must all be the same length and which must contain
integer values in the range of 0..255 inclusive.

Thanks to some grunt work from Edouard TISSERANT, wxPython now has the
needed tweaks in config.py to be able to be built with mingw32.  See
BUILD.txt for details.

Changes in wx.GraphicsContext to make things like the half-pixel
offsets more consistent across platforms.

wxMSW: If freezing a top-level window wxWidgets will actually freeze
the TLW's children instead.  This works around a feature of MS Windows
that allowed windows beneath the frozen one in Z-order to paint
through, and also mouse events clicking through to the lower window.


-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!



From steve at holdenweb.com  Wed Oct  3 15:22:13 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 15:22:13 -0400
Subject: gdbm objects not iterable?
In-Reply-To: <4703E97B.4000800@shopzeus.com>
References: <47039B0B.7080301@shopzeus.com>
	<fe07ph$6a0$1@sea.gmane.org>	<4703A9CE.3030608@shopzeus.com>
	<4703ACCF.3000301@holdenweb.com>	<4703BAD4.6020409@shopzeus.com>
	<4703BDB7.5080005@holdenweb.com> <4703E97B.4000800@shopzeus.com>
Message-ID: <4703EBE5.4050404@holdenweb.com>

Laszlo Nagy wrote:
> 
>>> E.g. I would not allow to change the keys of the gdbm object during 
>>> iteration. I'm not sure how to detect "end of iteration" though.
>>>
>>> (Maybe I misunderstood your question.)
>>>
>>>     
>> All I meant was that it's essential to trap this condition.
>>   
> Dictionary size change is easy to detect between two iterations. 
> Detecting key changes is more difficult but not hard (with a "last 
> modified" timestamp/counter maybe?).
> 
> These would not work when there are multiple threads iterating over the 
> same gdbm object. I believe I should not do this without locking. (How 
> it is implemented in Python with dicts? What happens if I iterate 
> through a dict in one thread, and modify it from another thread?)
> 
Why don't you try it and see ... (this is just a sneaky way of saying 
"beats me"...(

> I'm just glad that my idea was not rejected instantly. :-)
> 
It seems much more sensible than many of the proposals seen on this list.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline


From arkanes at gmail.com  Fri Oct 26 18:56:05 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Fri, 26 Oct 2007 17:56:05 -0500
Subject: Going past the float size limits?
In-Reply-To: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
Message-ID: <4866bea60710261556p1eda07cftf1edf255eafe0b71@mail.gmail.com>

On 10/26/07, jimmy.musselwhite at gmail.com <jimmy.musselwhite at gmail.com> wrote:
> Hello all
> It would be great if I could make a number that can go beyond current
> size limitations. Is there any sort of external library that can have
> infinitely huge numbers? Way way way way beyond say 5x10^350 or
> whatever it is?
>
> I'm hitting that "inf" boundary rather fast and I can't seem to work
> around it.
>

What in the world are you trying to count?


From mccredie at gmail.com  Fri Oct 26 19:00:36 2007
From: mccredie at gmail.com (Matt McCredie)
Date: Fri, 26 Oct 2007 16:00:36 -0700
Subject: Going past the float size limits?
In-Reply-To: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
Message-ID: <9e95df10710261600m2a07d577r3d762201eef25847@mail.gmail.com>

> It would be great if I could make a number that can go beyond current
> size limitations. Is there any sort of external library that can have
> infinitely huge numbers? Way way way way beyond say 5x10^350 or
> whatever it is?
>
> I'm hitting that "inf" boundary rather fast and I can't seem to work
> around it.


You have a couple of options.
1. Use long if that is appropriate for your data, they can be as large
as you want (eventually you will reach memory constraints, but that
isn't likely)
2. There is a decimal type, which is based on long (I think) and can
have a decimal portion.

to use longs:
x = 5 * 10**350

to use decimal:
import decimal
x = decimal.Decimal("5e350")

You will probably want to read up on  the decimal module.

Matt


From robmontes at gmail.com  Mon Oct  1 19:04:14 2007
From: robmontes at gmail.com (Roberto Montes)
Date: Mon, 1 Oct 2007 17:04:14 -0600
Subject: Displaying images in python shell
Message-ID: <791ae7cc0710011604m51bcc1basbc784a2e18b7f3d5@mail.gmail.com>

Good afternoon,
I am trying to display images directly in python shell using an image
library, however, I can only get
to open an image on windows image viewer through python. Is that the only
way to display images in python, or is there
a way to display an image directly along with the code?

Thank you in advance,

-- 
Roberto Montes Valladares
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071001/876c3ce4/attachment.html>

From paddy3118 at googlemail.com  Tue Oct  2 14:23:04 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Tue, 02 Oct 2007 18:23:04 -0000
Subject: Adding behaviour for managing "task" dependencies
In-Reply-To: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
References: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
Message-ID: <1191349384.994881.23190@g4g2000hsf.googlegroups.com>

On Oct 2, 3:28 pm, m.pricejo... at gmail.com wrote:
> Hi,
>
> I'm currently writing an animation pipeline in Python which is a
> system for controlling the flow of work and assets for a team of
> people working on a computer animated film. The system will be fairly
> large with a database backend.
>
> One particular problem that I'd like to address is the need for
> managing dependent tasks. Often you need to process one particular set
> of information before starting on another so when you batch them all
> together and send them off to a set of computers to process you need
> some way of formulating the dependencies. This preferably ends up
> looking a lot like a Makefile in the end with syntax a bit like:
>
> task task_name (dependencies):
>     commands to complete the task
>     ...
>
> Where the dependencies are a list of other tasks that need to be
> completed first.
>
> However I'd really like to do it in Python, but I'm thinking I'd might
> need to extend Python a bit in order to achieve the new syntax. I've
> seen attempts to do this within the Python syntax (Scons and buildIt)
> and I'm not a big fan of the way it ends up looking. I've worked at a
> place that has written it's own language to handle that sort of thing
> but then you end up with a language that is good for that but rubbish
> at everything else. Python seems like a good basis if I could tweak it
> slightly.
>
> One particular point that interests me is the idea of maintaining
> compatibility with Python modules so you still have all the
> functionality. This makes me think of the "from __future__ import ..."
> statements which, if I understand them correctly, can introduce new
> syntax like the with_statement, whilst still maintaining compatibility
> with older modules?
>
> Is this correct? Can anyone write a syntax changing module or is
> __future__ a hard coded special case? I realise I'll have to get into
> the C side of things for this. Are there other approaches to this that
> I really should be considering instead?
>
> Any thoughts would be most appreciated, though I would like to stress
> that I don't think Python should support the syntax I'm proposing I'd
> just like to know if I can extend a copy of it to do that.
>
> Mike

You could use a professional Job scheduling system such as LSF or Suns
Grid Engine that both support job dependencies (and a whole lot more).

For example, search for 'Job Dependencies' on this page:
  http://docs.sun.com/app/docs/doc/820-0699/6nce0ht7s?a=view

- Paddy.



From craig.howard at earthlink.net  Sun Oct  7 05:12:58 2007
From: craig.howard at earthlink.net (Craig Howard)
Date: Sun, 7 Oct 2007 05:12:58 -0400
Subject: How to create a file on users XP desktop
In-Reply-To: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
Message-ID: <79C3DDD8-A0EF-44A9-9ED1-33750B3799CD@earthlink.net>


On Oct 6, 2007, at 11:31 PM, goldtech wrote:

> Can anyone link me or explain the following:
>
> I open a file in a python script. I want the new file's location to be
> on the user's desktop in a Windows XP environment.  fileHandle = open
> (....., 'w' )  what I guess I'm looking for is an environmental
> variable that will usually be correct on most XP desktops and will
> work in the open statement. Or is there another way?
>
> Thanks
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list

import os.path
home = os.path.expanduser('~')
desktop = os.path.join(home, 'Desktop')


From jcb at iteris.com  Thu Oct 18 17:56:16 2007
From: jcb at iteris.com (Metalone)
Date: Thu, 18 Oct 2007 14:56:16 -0700
Subject: Is there a way to tell if a script has been run by Pythonw.exe
	instead of Python.exe?
Message-ID: <1192744576.899687.93650@k35g2000prh.googlegroups.com>

In particular I want to know how to tell if reading and writing to the
console can occur.
Something like
sys.isConsolePresent()



From anders.dahnielson at gmail.com  Fri Oct 12 18:07:48 2007
From: anders.dahnielson at gmail.com (Anders Dahnielson)
Date: Fri, 12 Oct 2007 22:07:48 -0000
Subject: Observer implementation question ('Patterns in Python')
Message-ID: <1192226868.588324.253790@y27g2000pre.googlegroups.com>

Sorry if this is a somewhat silly question...

I'm using the Observer implementation found in 'Patterns in
Python' [1] and find it really neat. But, I have not yet fully groked
the new-style class, classic class and property differences involved.
So can somebody please explain to me why this works (using a classic
class):

        class C:
            TheEvent = Event()
            def OnTheEvent(self):
                self.TheEvent(self, context)

        instance = C()
        instance.TheEvent += callback
        instance.OnTheEvent()
        instance.TheEvent -= callback

While this do not (using new-style class):

        class C(object):
            TheEvent = Event()
            def OnTheEvent(self):
                self.TheEvent(self, context)

        instance = C()
        instance.TheEvent += callback
        instance.OnTheEvent()
        instance.TheEvent -= callback

Raising an AttributeError :

        Traceback (most recent call last):
          File "sig_test.py", line 7, in ?
             instance.TheEvent += callback
        AttributeError: can't set attribute

So far I've figured out that it is the Event class (subclassing the
built-in property type) that is the culprit, but not why. (See
'Patterns in Python' [1] for code listing of the Event class.)

I would be grateful if some helpful soul could explain it.

[1] http://www.suttoncourtenay.org.uk/duncan/accu/pythonpatterns.html#observer



From steve at holdenweb.com  Thu Oct  4 06:13:50 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 06:13:50 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fe2703$vs0$6@lust.ihug.co.nz>
References: <13frd6vtarbee75@corp.supernews.com>	<85hcl8qaj7.fsf@lola.goethe.zz>
	<fe0q7a$e42$1@orkan.itea.ntnu.no>	<Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d@insightbb.com>	<fe10en$hmk$1@orkan.itea.ntnu.no>
	<fe2703$vs0$6@lust.ihug.co.nz>
Message-ID: <fe2ecp$63f$3@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <fe10en$hmk$1 at orkan.itea.ntnu.no>, Bent C Dalager wrote:
> 
>> Unfortunately, these days English almost always means American English...
> 
> North American or South American? Seems like USAmericans speak a little
> different English from other Americans...

Leave him be in his sea of ignorance. He's American ...

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From khemkaamit at gmail.com  Sat Oct 20 07:04:43 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Sat, 20 Oct 2007 16:34:43 +0530
Subject: vote for Python - PLEASE
In-Reply-To: <1192762769.971770.297830@e9g2000prf.googlegroups.com>
References: <mailman.193.1192751640.13605.python-list@python.org>
	<1192762769.971770.297830@e9g2000prf.googlegroups.com>
Message-ID: <1360b7230710200404k7d23ce7eg7d7d9918eaa0c16d@mail.gmail.com>

On 10/19/07, mensanator at aol.com <mensanator at aol.com> wrote:
> On Oct 18, 6:12 pm, Monty Taylor <mo... at inaugust.com> wrote:
> > Hey everybody,
> >
> > MySQL has put up a poll onhttp://dev.mysql.comasking what your primary
> > programming language is.
>
> But it doesn't ask that, it asks what your
> primary programming language is FOR DEVELOPING
> MYSQL APPLICATIONS.
>
> In my case, there is no such language (even though
> I primarily use Python) BECAUSE I DON'T USE MYSQL.
>
>
> > Even if you don't use MySQL - please go stick
> > in a vote for Python. I'm constantly telling folks that Python needs
> > more love, but PHP and Java are kicking our butts...
> >
> > (I know the world would be a better place if the poll were honest,
>
> There is dishonestly and there's outright lying
>
> > but
> > I'd rather that people got the message that they should do more python
> > development work!)
>
> Maybe the Python community doesn't need your help.

I do use mysql with python bindings, but it was a pleasant surprise to
see python was ahead of other languages. Though i too doubt the
meaning and genuineness of such internet polls. But may be there are
similar people in every community who would try to spread the word and
get more votes for 'their' language, hence actually helping to
normalize the results !

 However even if the poll results do not accurately reflect the
intended purpose, they may be, just may be, give an idea of size of
community and just how much that 'one' lie they will live with to see
'their' language ahead ;-) !

cheers,
-- 
--
Amit Khemka


From deets at nospam.web.de  Thu Oct 18 11:04:54 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 17:04:54 +0200
Subject: pymssql - insert NULL to int
References: <1192636146.759372.33660@v29g2000prd.googlegroups.com>
	<5nmqaoFioriqU1@mid.uni-berlin.de>
	<1192653670.787922.270360@t8g2000prg.googlegroups.com>
Message-ID: <5npb0mFja1siU1@mid.uni-berlin.de>

rc wrote:

> On Oct 17, 11:07 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> rc wrote:
>> > How to insert NULL values in to int field using params.
>>
>> > I'm trying to use pymssql.execute, passing the operation and list of
>> > params.  One of the values in the params is a NULL value going to int
>> > field.  The pymssql._quote() puts ' around the NULL which causes an
>> > exception to be thrown, is there a way to use the params for this or
>> > do I need to build the insert string myself?
>>
>> > pymssql.DatabaseError: internal error: SQL Server message 245,
>> > severity 16, state 1, line 1:
>> > Conversion failed when converting the varchar value 'NULL' to data
>> > type int.
>> > DB-Lib error message 10007, severity 5:
>> > General SQL Server error: Check messages from the SQL Server.
>>
>> Can you show us the actual code you use? I doubt that such a basic thing
>> isn't working.
>>
>> You are aware that you have to pass None, not "NULL"?
>>
>> Diez
> 
> I had tried None and was getting the same error as 'NULL', however, I
> tried again after your post and its working now.  Not sure what I
> changed but thanks for getting me to tried it again.

I'm pretty sure you tried "None" instead of None

Diez


From exhuma at gmail.com  Fri Oct  5 03:55:55 2007
From: exhuma at gmail.com (exhuma.twn)
Date: Fri, 05 Oct 2007 00:55:55 -0700
Subject: Python + Shoutpy + Twisted Locks
Message-ID: <1191570955.158128.326560@57g2000hsv.googlegroups.com>

Unfortunately I don't have the code at hand on this box, but maybe
someone can give me a nudge in the right direction.

Some background: Last year I began to write a jukebox system that
provided a Telnet-like interface. I wrote this using "socket". Later
along the path I discovered Twisted, and due to various other
problems, a re-write made sense. So I decided to use Twisted. The only
thing I adapted was the class providing the telnet interface. In the
background I use a few other threads. One for metadata-scanning, one
for assuring continuous playback (periodic checks the player status
and appends songs if necessary) and in the case the shoutcast backend
is activated, there is also a built-in player thread.

I remember having it running already, but I don't remember if it was
before I started to use Twisted or after.

Well, I beleive the problem lies withing the last named thread. This
one uses shoutpy to stream data to the shoutcast server. What I found
is that "libshout" is blocking, which should be fine as the whole
thing runs in it's separate thread. But the application hangs
nevertheless while streaming. This effectively blocks out the other
thread that checks the player status, which then fails to append new
songs to the queue. So only one song is played when streaming.

I saw that there is another package called "python-shout". But neither
that nor "shoutpy" have any comprehensive documentation which might
tell me anything about the libshout blocking problem. The
documentation of libshout revealed a "non-blocking" mode, but even
though I made the necessary adjustments to the code, I still had the
same problem.

The other threads in my application run fine and don't block the rest
of the app. So I guess, that the main problem is that blocking occurs
"outside" the python world and "inside" the libshout world. Maybe the
combination of all this with Twisted is an unlucky marriage but I
would be disappointed to be told: "Nope, won't be possible"

Maybe Twisted's deferreds to the rescue? I don't know... I'm still
quite green with Twisted ;)



From steven.bethard at gmail.com  Mon Oct 22 14:51:37 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 22 Oct 2007 12:51:37 -0600
Subject: Iteration for Factorials
In-Reply-To: <Michael.J.Fromberger-241B96.13403622102007@localhost>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Michael.J.Fromberger-241B96.13403622102007@localhost>
Message-ID: <P5udnX0OF_KkbIHanZ2dnUVZ_uDinZ2d@comcast.com>

Michael J. Fromberger wrote:
>   # Not legal Python code.
>   def fact3(n, acc = 1):
>     TOP: 
>       if n > 0
>         n = n - 1
>         acc = acc * n
>         goto TOP
>       else:
>         return acc

Yes, to write this in legal Python code, you have to write::

   from goto import goto, label # http://entrian.com/goto/

   def fact3(n, acc = 1):
     label .TOP
     if n > 0
       n = n - 1
       acc = acc * n
       goto .TOP
     else:
       return acc

;-)

STeVe

> 
> Naturally, of course, Python does not provide a "goto" statement.  But 
> it does have one that's similar:
> 
>   while TEST: BODY
> 
> is equivalent in meaning to the pseudo-code:
> 
>   X: if TEST: 
>        BODY  
>        goto X
> 
> Can you now see how you would re-write "fact3" into legal Python code,
> using this equivalence?  Once you have done so, you will also be able to
> get rid of the extra accumulating parameter, and then you will have what 
> you wanted.
> 
> I hope this helps.
> 
> Cheers,
> -M
> 


From nick.bastin at gmail.com  Sun Oct  7 20:26:18 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Sun, 7 Oct 2007 20:26:18 -0400
Subject: Cross platform way of finding number of processors on a machine?
In-Reply-To: <1i5k9kn.kxih581ipiy0sN%raims@dot.com>
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<1i5k9kn.kxih581ipiy0sN%raims@dot.com>
Message-ID: <66d0a6e10710071726i6174262cm67c8b7f734c3d3df@mail.gmail.com>

On 10/6/07, Lawrence Oluyede <raims at dot.com> wrote:
> John <weekender_ny at yahoo.com> wrote:
> > Is there a way to find the number of processors on a machine (on linux/
> > windows/macos/cygwin) using python code (using the same code/cross
> > platform code)?
>
> >From processing <http://cheeseshop.python.org/pypi/processing/0.34> :

A few reiterated notes inline, from my previous message.

> def cpuCount():
>     '''
>     Returns the number of CPUs in the system
>     '''
>     if sys.platform == 'win32':
>         try:
>             num = int(os.environ['NUMBER_OF_PROCESSORS'])

The user can do bad things to this environment variable, but it's
probably ok most of the time. (Hey, they change it, they pay the
consequences).

>     else:
>         try:
>             num = os.sysconf('SC_NPROCESSORS_ONLN')

This is really bad on linux.  You really want to parse /proc/cpuinfo
because HT 'cpus' are almost useless, and can be bad in situations
where you try to treat them as general purpose cpus.

--
Nick


From amjadcsu at gmail.com  Wed Oct 31 23:49:01 2007
From: amjadcsu at gmail.com (amjadcsu at gmail.com)
Date: 31 Oct 2007 20:49:01 -0700
Subject: capturing output of command line in an array
In-Reply-To: <mailman.699.1193846020.13605.python-list@python.org>
References: <1193842906.058058.29080@t8g2000prg.googlegroups.com>
	<mailman.699.1193846020.13605.python-list@python.org>
Message-ID: <1193846817.684231.187640@e34g2000pro.googlegroups.com>

thanks Lee,
I would just like to  get the "node"  in that list.
so it would be something like this
alist=[node13,node12,node8,node2,node1.....]
I dont want the whole info
is it possible??
On Oct 31, 9:44 am, Lee Capps <lca... at cteresource.org> wrote:
> On Oct 31, 2007, at 11:01 AM, amjad... at gmail.com wrote:
>
>
>
> > I am trying to execute a command using os.system. this command lists
> > the number of nodes alive in a cluster. I would like to capture the
> > output in list/array in python. IS it possible.?/
>
> > Here is my command
> >  gstat -a
> > node13     2 (    0/   56) [  0.00,  0.00,  0.00] [   0.0,   0.0,
> > 0.1,  99.9,   0.0] OFF
> > node12     2 (    1/   63) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.7,  49.8,   0.0] OFF
> > node8     2 (    1/   59) [  0.99,  0.97,  0.91] [  47.5,   0.0,
> > 2.8,  49.7,   0.0] OFF
> > node2     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node1     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node7     2 (    1/   58) [  0.99,  0.97,  0.91] [  49.8,   0.0,
> > 0.6,  49.7,   0.0] OFF
> > node11     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> > 3.8,  49.6,   0.0] OFF
> > node4     2 (    1/   59) [  1.00,  1.00,  0.93] [  46.6,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node10     2 (    1/   59) [  1.00,  1.00,  0.94] [  46.7,   0.0,
> > 3.7,  49.7,   0.0] OFF
> > node5     2 (    1/   59) [  1.00,  1.00,  0.92] [  49.8,   0.0,
> > 0.4,  49.7,   0.0] OFF
> > node6     2 (    1/   59) [  1.00,  1.00,  0.94] [  49.5,   0.0,
> > 0.9,  49.7,   0.0] OFF
>
> > I would like to have an array where each element contains the nodes
>
> > for example
> > a=[node13,node12,node2,node8,node1,node7,node 11]
>
> > any help would be appreciated
>
> You might try os.popen to read in the output of your command.
>
> It would be helpful to have more information about what you'd like to
> do with your list.  Do you just want to put the text of the
> individual node lines from gstat into the list?  If so, os.popen
> should work for you.  Or  do you need to parse the lines and store
> them in, say dictionaries?  Tuples?  If you need to parse it, you
> could use module re, or even just string methods, depending on what
> you're trying to do . . . .
>
> HTH,
>
> ---
> Lee Capps
> Technology Specialist
> CTE Resource Center
> lca... at cteresource.org




From rw at smsnet.pl  Mon Oct 15 16:00:23 2007
From: rw at smsnet.pl (Rob Wolfe)
Date: Mon, 15 Oct 2007 22:00:23 +0200
Subject: Normalize a polish L
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
Message-ID: <87d4vg87xk.fsf@merkury.smsnet.pl>

Peter Bengtsson <peterbe at gmail.com> writes:

> In UTF8, \u0141 is a capital L with a little dash through it as can be
> seen in this image:
> http://static.peterbe.com/lukasz.png
>
> I tried this:
>>>> import unicodedata
>>>> unicodedata.normalize('NFKD', u'\u0141').encode('ascii','ignore')
> ''
>
> I was hoping it would convert it it 'L' because that's what it
> visually looks like. And I've seen it becoming a normal ascii L before
> in other programs such as Thunderbird.
>
> I also tried the other forms: 'NFC', 'NFKC', 'NFD', and 'NFKD' but
> none of them helped.
>
> What am I doing wrong?

I had the same problem and my little research revealed that the problem
is caused by unicode standard itself. I don't know why
but characters with stroke don't have canonical equivalent.
I looked into this file:
http://unicode.org/Public/UNIDATA/UnicodeData.txt

and compared two positions:

1.
<UnicodeData.txt>
0142;LATIN SMALL LETTER L WITH STROKE;Ll;0;L;;;;;N;LATIN SMALL LETTER L SLASH \
;;0141;;0141
0141;LATIN CAPITAL LETTER L WITH STROKE;Lu;0;L;;;;;N;LATIN CAPITAL LETTER L SLASH \
;;;0142;
</UnicodeData.txt> 

2.
<UnicodeData.txt>
0105;LATIN SMALL LETTER A WITH OGONEK;Ll;0;L;0061 0328;;;;N;LATIN SMALL LETTER A OGONEK \
;;0104;;0104
</UnicodeData.txt>

In the second position there is in the 6-th field canonical equivalent
but in the 1-st there is nothing. I don't know what justification
is behind that, but probably there is something. ;)


Regards,
Rob




From ptmcg at austin.rr.com  Mon Oct 22 13:20:55 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Mon, 22 Oct 2007 10:20:55 -0700
Subject: Iteration for Factorials
In-Reply-To: <1193058123.350325.184040@y27g2000pre.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193058123.350325.184040@y27g2000pre.googlegroups.com>
Message-ID: <1193073655.955400.163300@v23g2000prn.googlegroups.com>

On Oct 22, 8:02 am, vimal <cool.vimalsm... at gmail.com> wrote:
> On Oct 22, 5:43 pm, Marco Mariani <ma... at sferacarta.com> wrote:
>
> > Py-Fun wrote:
> > > def itforfact(n):
> > >     while n<100:
> > >         print n
> > >         n+1
> > > n = input("Please enter a number below 100")
>
> > You function should probably return something. After that, you can see
> > what happens with the result you get.
>
> i am just suggesting u an idea
> but i dont know it satisfies ur needs
>
> x=10
> def cal_range(10)
>     for i in range(10):
>         print 2**i

Maybe a little math refresher would be good for those trying to post
suggestions.

"Factorial of N" means "the product of 1 x 2 x 3 x ... x N", and is
shown symbolically as "N!".

(Factorial is only defined for nonnegative numbers, and for reasons
that go beyond this little note, just know that 0! = 1.)

In Python, a fully expanded factorial for values >= 1 would be:

2! = 1 * 2
5! = 1 * 2 * 3 * 4 * 5
8! = 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8

Here is an example routine showing iteration, that prints these
expressions:


def print_factorial(n):
    print str(n)+"! =",
    print "1",
    t = 2
    while t <= n:
        print "*",t,
        t += 1
    print

Perhaps this example will give you some ideas on how to approach your
problem.


-- Paul



From Caseyweb at gmail.com  Thu Oct  4 14:25:44 2007
From: Caseyweb at gmail.com (Casey)
Date: Thu, 04 Oct 2007 18:25:44 -0000
Subject: What does the syntax [::-1] really mean?
In-Reply-To: <mailman.1517.1191519687.2658.python-list@python.org>
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
	<mailman.1517.1191519687.2658.python-list@python.org>
Message-ID: <1191522344.885027.59560@50g2000hsm.googlegroups.com>

On Oct 4, 1:41 pm, "Kurt Smith" <kwmsm... at gmail.com> wrote:
> >>> 'abc'[None:None:-1]
> 'cba'
> Kurt

Thanks!



From aine_canby at yahoo.com  Tue Oct  2 08:56:23 2007
From: aine_canby at yahoo.com (aine_canby at yahoo.com)
Date: Tue, 02 Oct 2007 05:56:23 -0700
Subject: file open dialog from within PythonWin
Message-ID: <1191329783.509586.159380@d55g2000hsg.googlegroups.com>

Hi,

I want to open a file seach dialog from within my python script which
I run from within PythonWin. I also have the wxPython package
installed.

How might I do this?

Thanks,

Aine



From rsachetto at gmail.com  Wed Oct 17 11:52:06 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Wed, 17 Oct 2007 12:52:06 -0300
Subject: Best Python Linux distribution
In-Reply-To: <6a2ccd190710170653k39f40edeieaaa3b048b4e8cdb@mail.gmail.com>
References: <47160015.3070404@muzz.co.uk>
	<6a2ccd190710170652i62cc6541ie5e69ce7fc8dcb03@mail.gmail.com>
	<6a2ccd190710170653k39f40edeieaaa3b048b4e8cdb@mail.gmail.com>
Message-ID: <250fcec00710170852v29945e70r85f53cff836056a2@mail.gmail.com>

You could try this
http://www.ibiblio.org/onebase/onebaselinux.com/About/features/developgo.php

On 10/17/07, Joe Riopel <goon12 at gmail.com> wrote:
>
> On 10/17/07, Joe Riopel <goon12 at gmail.com> wrote:
> > IDLE and Python came installed on Slackware 12, I am not 100% sure
> > about previous versions.
>
>
> Also, I am sure a lot of it (with most distributions)  depends on the
> packages you select during the  installation.
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/ebab8df7/attachment.html>

From lorna.burns at gmail.com  Mon Oct 22 08:26:06 2007
From: lorna.burns at gmail.com (Py-Fun)
Date: Mon, 22 Oct 2007 05:26:06 -0700
Subject: Iteration for Factorials
Message-ID: <1193055966.362489.252080@v29g2000prd.googlegroups.com>

I'm stuck trying to write a function that generates a factorial of a
number using iteration and not recursion.  Any simple ideas would be
appreciated.



From danb_83 at yahoo.com  Sat Oct 27 12:16:51 2007
From: danb_83 at yahoo.com (Dan Bishop)
Date: Sat, 27 Oct 2007 09:16:51 -0700
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <1193498867.815682.69050@v3g2000hsg.googlegroups.com>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
	<1193494184.618613.81090@50g2000hsm.googlegroups.com>
	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
Message-ID: <1193501811.620522.261570@o80g2000hse.googlegroups.com>

On Oct 27, 10:27 am, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 27, 3:09 pm, MRAB <goo... at mrabarnett.plus.com> wrote:
>
>
>
> > On Oct 27, 12:12 am, Ben Finney <bignose+hates-s... at benfinney.id.au>
> > wrote:> Matimus <mccre... at gmail.com> writes:
> > > > The trailing L [for 'long' literals] is going away in Python 3.0.
>
> > > Yes. On the other hand, we are gaining '0bNNNN' for binary literals,
> > > to go along with '0oNNNN' for octal and '0xNNNN' for hexadecimal.
>
> > > So, the original poster might get further by proposing an '0dNNN.NNN'
> > > syntax for 'decimal.Decimal' literals. At least the syntax would be
> > > consistent and wouldn't add a new punctuation character to the
> > > language...
>
> > [snip]
> > Some languages have or permit 0qNNNN or 0QNNNN for octal to reduce the
> > chance of confusion of 'O' (oh) with '0' (zero) in uppercase, eg.
> > 0Q123 is clearer than 0O123 (0 oh 123), although lowercase is better,
> > eg. 0q123 or 0o123.
>
> Even clearer is not to allow octal literals :) Is there *any* use for
> them?

The mode argument to os.chmod.



From akraemer at sbcglobal.net  Thu Oct 18 14:45:34 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: 18 Oct 2007 11:45:34 -0700
Subject: Strange behaviour with reversed()
In-Reply-To: <Xns99CD690B6D6Dduncanbooth@127.0.0.1>
References: <13hdochic30oo43@corp.supernews.com>
	<mailman.161.1192686567.13605.python-list@python.org>
	<13he60e4vc6i753@corp.supernews.com>
	<Xns99CD690B6D6Dduncanbooth@127.0.0.1>
Message-ID: <1192726016.847208.35040@v23g2000prn.googlegroups.com>

On Oct 18, 2:25 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Steven D'Aprano <st... at REMOVE-THIS-cybersource.com.au> wrote:
> >> Note that the starting index is determined at creation time, not when
> >> the iteration begins. So, if you create a reversed object over a list
> >> containing 3 elements, the first returned element will be seq[2],
> then
> >> seq[1], then seq[0]. It doesn't matter if you modify the list after
> >> creating the reversed object but before starting the iteration: it
> will
> >> start at seq[2] even if it's not the last item, and will silently
> stop
> >> if seq[2] is not a valid index anymore.
>
> > You know, that's probably the *least* intuitive behaviour possible.
>
> > For reversed() to iterate over the input as it was at creation time is
> a
> > reasonable design choice; for it to iterate over the input as it is at
> > call time is also a reasonable design choice; but for it to iterate
> over
> > some unholy mutant melding of the sequence as-it-was and as-it-is is
> > simply bizarre. I hope it just fell out of the implementation and
> wasn't
> > a deliberate design choice.
>
> You mean that you don't find it intuitive that it iterates through the
> indices that existed at creation time and returns the values as they are
> now? I'd have said that was the *most* intuitive behaviour.
>
> The only other behaviours I would regard as intuitive for iteration over
> a mutating sequence would be to throw an exception either for mutating
> the sequence while the iterator exists or for using the iterator after a
> mutation.

Maybe it would have been slightly more intuitive if reversed() had
been implemented like this,

def Reversed(seq):
  for i in xrange(len(seq)-1,-1,-1):
    yield seq[i]

so that the length of the sequence is determined when the iteration
starts, not when the iterator is created?

The unfortunate naming may also have added to the confusion since its
similarity to "sorted" suggests that a copy of the list is returned.
However,

>>> type(reversed([]))
<type 'listreverseiterator'>

and for comparison

>>> type(iter([]))
<type 'listiterator'>

reveals what it really is.

-Andreas



From billwerk at gmail.com  Tue Oct  9 15:01:26 2007
From: billwerk at gmail.com (Bill Hamilton)
Date: Tue, 9 Oct 2007 14:01:26 -0500
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <e1525e7f0710091158x34b1abc0nb8329ec04b579b51@mail.gmail.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<mailman.33.1191950662.916.python-list@python.org>
	<13gni9f4eq8pc4b@corp.supernews.com>
	<e1525e7f0710091158x34b1abc0nb8329ec04b579b51@mail.gmail.com>
Message-ID: <e1525e7f0710091201w73d5728cgd5c41c06ff42dcb8@mail.gmail.com>

On 10/9/07, Grant Edwards <grante at visi.com> wrote:
> On 2007-10-09, Robin Becker <robin at reportlab.com> wrote:
> > aaron.watters at gmail.com wrote:
> >> On Oct 9, 8:46 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
> >>> ps. there is a python project named "The Devil Framework", I cringe
> >>> every time I hear about it.Nucularis not as bad, but it is close.
> >>
> >> Aw shucks.  I thought it was funny.  Can't I make fun of
> >> politicians in my open source projects?  Besides there is
> >> a great tradition of tounge-in-cheek package names, like
> >> "Cold fusion", for example.
> >>.......
> >
> > I think it's an excellent name :)
>
> And Bush would probably pronounce it "Nuke-lee-ur".

I dislike Bush as much as the next guy, but could we please keep
politics off the group?


--
-Bill Hamilton


From devraj at gmail.com  Wed Oct 24 02:24:35 2007
From: devraj at gmail.com (Devraj)
Date: Wed, 24 Oct 2007 06:24:35 -0000
Subject: HTTPS Proxy authentication
Message-ID: <1193207075.948119.219440@z24g2000prh.googlegroups.com>

Hi Everyone,

I have successfully used the ConnectHTTPSHandler class published at
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/456195

to handle HTTPS proxy connections. Has anyone implemented a Basic
authentication handler for ConnectHTTPSHandler? Or can I use urllib2
to handle the authentication?

If someone can share their code/suggestions it would be greatly
appreciated.

Thanks for your time.



From cool.vimalsmail at gmail.com  Mon Oct 22 09:02:03 2007
From: cool.vimalsmail at gmail.com (vimal)
Date: Mon, 22 Oct 2007 13:02:03 -0000
Subject: Iteration for Factorials
In-Reply-To: <oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
Message-ID: <1193058123.350325.184040@y27g2000pre.googlegroups.com>

On Oct 22, 5:43 pm, Marco Mariani <ma... at sferacarta.com> wrote:
> Py-Fun wrote:
> > def itforfact(n):
> >     while n<100:
> >         print n
> >         n+1
> > n = input("Please enter a number below 100")
>
> You function should probably return something. After that, you can see
> what happens with the result you get.


i am just suggesting u an idea
but i dont know it satisfies ur needs

x=10
def cal_range(10)
    for i in range(10):
        print 2**i




From steve at REMOVE-THIS-cybersource.com.au  Thu Oct  4 19:19:56 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 04 Oct 2007 23:19:56 -0000
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<13g9d3nagotcab6@corp.supernews.com>
	<7xtzp7xlcg.fsf@ruckus.brouhaha.com>
Message-ID: <13gat8s6nbf4bbf@corp.supernews.com>

On Thu, 04 Oct 2007 02:47:27 -0700, Paul Rubin wrote:

> Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
>> > implementation in pure Python).  Finally, arithmetic would become
>> > very confusing if there were three distinct numeric types; it already
>> > causes enough confusion with two!
> 
> There's already ints, longs, floats, complexes, and decimals.  What's
> the problem with one more?

Having different data types for different needs isn't a bug, it's a 
feature.

Besides, ints and longs are more or less the same data type now, or at 
least they are in the process of being integrated.



-- 
Steven.


From michele.simionato at gmail.com  Fri Oct 19 04:59:18 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Fri, 19 Oct 2007 08:59:18 -0000
Subject: CGI Server that supports redirects
In-Reply-To: <5nr9p0Fja45tU1@mid.individual.net>
References: <5nr9p0Fja45tU1@mid.individual.net>
Message-ID: <1192784358.575641.241050@z24g2000prh.googlegroups.com>

On Oct 19, 10:56 am, Thomas Guettler <guettli.use... at thomas-
guettler.de> wrote:
> Hi,
>
> CGIHTTPServer does not support redirects[1]
>
> Is there an other python-only way to get a web server
> running wich can execute python code?

Have you tried the CherryPy server, which is also included with Paste?

 Michele Simionato



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 07:45:14 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 12:45:14 +0100
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1193525001.849364.301510@19g2000hsx.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<1193525001.849364.301510@19g2000hsx.googlegroups.com>
Message-ID: <4725c7ca$0$17223$426a34cc@news.free.fr>

johnbraduk a ?crit :
> Thomas,
> Like many others I have been going round the same loop for months.
> 
> I have struggled with most of the Python solutions, including
> TurboGears and have given up and gone back to ColdFusion.  I am not
> trying to kick of a religious war about the pros and cons of
> ColdFusion as a scripting langauge, but IMHO, as a development
> environment (Dreamweaver), it is unbeatable.

Won't talk about opinion here. Enough to say that Dreamweaver is IMHO a 
bloated piece of crap.

> In one product, "out of
> the box" I can integrate database access and web design,

Which are totally orthogonal aspects, and as such are better kept 
seperate. In my current shop - as well as in the previous one, 
programmers deal with database access, designers deal with design, and 
integrators deal with html and templates.

> including
> AJAX, in one GUI IDE.

I don't want a "GUI IDE", I want my code editor. Using which I can edit 
(x)html, css, any template language, javascript, python, php, sql, 
whatever...

>  Ok, the IDE is on Windows, but the servers run
> on Linux.

No way I'm going to inflict myself the pain of using Windows. Sorry.

> This seems to be an aspect of web design that has been totally
> ignored in the Python community. 
(snip rant about having too much choice)
> Am I asking too much to have a Python product "X" which is a fully
> self-contained web development framework?

Have you tried Django ? One of the main criticism against it is that 
it's a bit too much "self-contained" !-)

But anyway, since all these are free softwares - freely written and 
contributed by mostly benelovent contributors -, yes, you *are* "asking" 
too much.



From heikki at osafoundation.org  Tue Oct  9 01:21:24 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Mon, 08 Oct 2007 22:21:24 -0700
Subject: ANN: M2Crypto 0.18.1
Message-ID: <YbadnUFtZI9JkpbanZ2dnUVZ_r2dnZ2d@comcast.com>

M2Crypto is the most complete Python wrapper for OpenSSL featuring RSA,
DSA, DH, HMACs, message digests, symmetric ciphers (including AES); SSL
functionality to implement clients and servers; HTTPS extensions to
Python's httplib, urllib, and xmlrpclib; unforgeable HMAC'ing
AuthCookies for web session management; FTP/TLS client and server;
S/MIME; ZServerSSL: A HTTPS server for Zope and ZSmime: An S/MIME
messenger for Zope.

http://chandlerproject.org/Projects/MeTooCrypto

Changelog:

- Redo build fix when OpenSSL configured without Elliptic Curves (EC),
see also INSTALL file. This affects at least Fedora Core systems.

-- 
  Heikki Toivonen


From bj_666 at gmx.net  Wed Oct 31 16:43:21 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 31 Oct 2007 20:43:21 GMT
Subject: XML DOM, but in chunks
References: <1193862283.829628.122480@k79g2000hse.googlegroups.com>
Message-ID: <5os7n8Fo3gssU6@mid.uni-berlin.de>

On Wed, 31 Oct 2007 20:24:43 +0000, Sean Davis wrote:

> I have some very large XML files that are basically recordsets.  I
> would like to access each record, one-at-a-time, and I particularly
> like the ElementTree library for accessing the data.  Is there a way
> to have ElementTree read only one record of the data at a time?

Have you tried `iterparse()`?

Ciao,
	Marc 'BlackJack' Rintsch


From steven.bethard at gmail.com  Wed Oct 10 14:21:09 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 10 Oct 2007 12:21:09 -0600
Subject: Problem with argument parsing
In-Reply-To: <5n3hh6Ffsul2U1@mid.uni-berlin.de>
References: <1191940442.108905.292810@50g2000hsm.googlegroups.com>
	<5n1keaFfoj0eU1@mid.uni-berlin.de>
	<1191995876.142576.242160@50g2000hsm.googlegroups.com>
	<5n3hh6Ffsul2U1@mid.uni-berlin.de>
Message-ID: <PMmdnUC2Ne2IhZDanZ2dnUVZ_rLinZ2d@comcast.com>

Diez B. Roggisch wrote:
> lgwe wrote:
> 
>> On 9 Okt, 17:18, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>>> lgwe wrote:
>>>> I have a python-script: myscript, used to start a program on another
>>>> computer and I use OptionParser in optpars.
>>>> I use it like this: myscript -H host arg1 -x -y zzz
>>>> I would like OptionParser to ignore all arguments after arg1, because
>>>> these are options that should be used by the program started on the
>>>> oter computer arg1 -x -y zzz.
>>>> One solution is to write: myscript -H host "arg1 -x -y zzz"
>>>> But is it in some way possible to instruct OptionParser to ignore -x -
>>>> y zzz without  the "..."?
>>> Use -- to separate arguments to be parsed by OptionParser from the
>>> to-be-ignored-ones, which is documented btw.
>>>
>>> Diez
>> Thanks!
>> I understand that this must be documented.
>> But I can't find if anywhere in
>> http://docs.python.org/lib/module-optparse.html. (maybee I just cant see
>> it, but it is there)
> 
> It's general unix-commandline-knowledge... but you are right of course. It
> should be documented. Maybe you can file a documentation-bug or something?

Note that optparse is (unfortunately) maintained separately from the 
rest of Python. You'll need to file bug reports at the optik bug tracker:

     http://sourceforge.net/tracker/?group_id=38019&atid=421097

STeVe


From python at rcn.com  Tue Oct 16 16:04:41 2007
From: python at rcn.com (Raymond Hettinger)
Date: Tue, 16 Oct 2007 13:04:41 -0700
Subject: groupby() seems slow
In-Reply-To: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
Message-ID: <1192565081.808036.208480@q5g2000prf.googlegroups.com>

On Oct 15, 8:02 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
> t = timeit.Timer("test3()", "from __main__ import test3, key, data")
> print t.timeit()
> t = timeit.Timer("test1()", "from __main__ import test1, data")
> print t.timeit()
>
> --output:---
> 42.791079998
> 19.0128788948
>
> I thought groupby() would be faster.  Am I doing something wrong?

The groupby() function is not where you are losing speed.  In test1,
you've in-lined the code for computing the key.  In test3, groupby()
makes expensive, repeated calls to a pure python key function.   For
an apples-to-apples comparison, try something like this:

def test4():
    master_list = []
    row = []
    for elem in data:
        if key(elem) == 'a':
            row.append(elem)
        elif row:
            master_list.append(' '.join(row))
            del row[:]


Raymond




From half.italian at gmail.com  Sat Oct 20 03:10:07 2007
From: half.italian at gmail.com (Sean DiZazzo)
Date: Sat, 20 Oct 2007 07:10:07 -0000
Subject: SQLObject - Connect to established DB with non-int 'id' field
In-Reply-To: <5ntmr1Fk3p0jU1@mid.uni-berlin.de>
References: <1192839228.836892.139780@e9g2000prf.googlegroups.com>
	<5ntmr1Fk3p0jU1@mid.uni-berlin.de>
Message-ID: <1192864207.111303.82820@e9g2000prf.googlegroups.com>

On Oct 19, 11:51 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Sean DiZazzo schrieb:
>
> > Hi all,
>
> > I am just beginning with TurboGears and have run into a problem with
> > SQLObject.
>
> > I'm trying to connect to an established mysql DB, and use TurboGears
> > to display results from the DB only.  The problem is that the DB
> > already has an 'id' field that is a string as opposed to an int.
> > SQLObject complains because it wants to use the id field for it's own
> > purposes.
>
> > How can I use TurboGears to get data out of this DB?
>
> http://sqlobject.org/FAQ.html#non-integer-ids
>
> While I personally prefer SQLObject over SQLAlchemy, the latter has
> better legacy-database-support. Maybe a switch would be the better solution.
>
> Diez

doh...I swear I looked there!  This time I see it.  Thanks.

~Sean



From paul.hankin at gmail.com  Thu Oct  4 18:55:42 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 04 Oct 2007 22:55:42 -0000
Subject: Dynamically creating class properties
In-Reply-To: <fe3jv0$lnc$1@news1.carnet.hr>
References: <fe3jv0$lnc$1@news1.carnet.hr>
Message-ID: <1191538542.328030.21220@r29g2000hsg.googlegroups.com>

On Oct 4, 9:59 pm, Karlo Lozovina <_karlo_ at _mosor.net> wrote:
> Hi all,
>
> this is my problem: lets say I have a arbitrary long list of attributes
> that I want to attach to some class, for example:
>
>      l = ['item1', 'item2', 'item3']
>
> Using metaclasses I managed to create a class with those three
> attributes just fine. But now I need those attributes to be properties,
> so for example if 'A' is my constructed class, and 'a' an instance of
> that class:
>
>     a = A()
>
> Now if I write:
>
>     a.item1 = 'something'
>     print a.item1
>
> I want it to be actually:
>
>     a.setitem1('something')
>     print a.getitem1
>
> Any idea how to do that with metaclasses and arbitrary long list of
> attributes? I just started working with them, and it's driving me nuts :).

No metaclasses, but how about this?

def make_class(name, attributes):
    # Build class dictionary.
    d = dict(_attributes=list(attributes))
    # Add in getters and setters from global namespace.
    for attr in attributes:
        d[attr] = property(globals()['get' + attr],
            globals()['set' + attr])
    # Construct our class.
    return type(name, (object,), d)


# Test code:

def getitem1(self):
    return self._fred + 1

def setitem1(self, value):
    self._fred = value

A = make_class('A', ['item1'])
a = A()

a.item1 = 19
print a.item1

>> 20


You didn't say where the getters and setters (here 'getitem1',
'setitem1', etc.) come from. I've assumed from the global namespace
but you probably want to change that.

--
Paul Hankin



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 12:26:04 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 09:26:04 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <mailman.575.1193660646.13605.python-list@python.org>
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
Message-ID: <1193675164.790618.194190@57g2000hsv.googlegroups.com>

On 29 oct, 09:23, Dick Moores <r... at rcblue.com> wrote:

> >while True:
> >     if msvcrt.getch() == '\r':
>
> I tried it and find that without the msvcrt.kbhit the first key I hit
> doesn't do anything. I have to hit that key again, or another key.

I'd say there is a logic error in your program then; keys don't "do
anything" by themselves.
Try posting a small sample, telling what you get and what you expect.

--
Gabriel Genellina



From paul.hankin at gmail.com  Wed Oct 17 18:23:58 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 22:23:58 -0000
Subject: Noob questions about Python
In-Reply-To: <1192658316.048082.212190@v23g2000prn.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
Message-ID: <1192659838.773066.160060@i38g2000prf.googlegroups.com>

On Oct 17, 10:58 pm, Ixiaus <parnel... at comcast.net> wrote:
> Thank you for the quick responses.
>
> I did not know that about integer literals beginning with a '0', so
> thank you for the explanation. I never really use PHP except for
> handling basic forms and silly web stuff, this is why I picked up
> Python because I want to teach myself a more powerful and broad
> programming language.
>
> With regard to why I asked: I wanted to learn about Binary math in
> conjunction with Python, so I wrote a small function that would return
> a base 10 number from a binary number. It is nice to know about the
> int() function now.
>
> Just for the sake of it, this was the function I came up with:
>
> def bin2dec(val):
>     li = list(val)
>     li.reverse()
>     res = [int(li[x])*2**x for x in range(len(li))]
>     res.reverse()
>     print sum(res)
>
> Now that I look at it, I probably don't need that last reverse()
> because addition is commutative...
>
> def bin2dec(val):
>     li = list(val)
>     li.reverse()
>     res = [int(li[x])*2**x for x in range(len(li))]
>     print sum(res)

Right idea: now to remove all those intermediate lists you construct.
1. reversed(val) creates an iterator that runs over the elements (here
of a string) in reverse order.
2. enumerate() is usually better than using an explicit list index.
3. You can use a generator in your sum to avoid constructing the final
list.

Applying these to your function, and noting that n << k is nicer than
n * 2 ** k, we get a one-liner:

def bin2dec(val):
    return sum(int(i) << k for k, i in enumerate(reversed(val)))

Or a slightly nicer alternative is to filter the generator using 'if':

def bin2dec(val):
    return sum(1 << k for k, i in enumerate(reversed(val)) if int(i))

--
Paul Hankin



From grey at dmiyu.org  Sat Oct 20 08:43:31 2007
From: grey at dmiyu.org (Steve Lamb)
Date: Sat, 20 Oct 2007 12:43:31 +0000 (UTC)
Subject: what is the difference between the two kinds of brackets?
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
	<NQkSi.6944$oA2.3942@nlpi068.nbdc.sbc.com>
Message-ID: <slrnfhjtu6.3rl.grey@dmiyu.org>

On 2007-10-20, James Stroud <jstroud at mbi.ucla.edu> wrote:
><commentary>The long of it is that there are deep computer-science 
> issues that distinguish the two and the differences become more 
> important the more you know (presumably). However, I have been 
> programming this language for 5 years, and I still can't figure out the 
> necessity for having both. I have heard all of the arguments, however 
> but none are terribly pursuasive.</commentary>

    The quick answer is that tuples can be indexes into directories while
lists cannot.  This doesn't seem like that big of a deal until you realize it
allows you to group related but distict bits of data together to form an index
while retaining their individual identity.  A simplistic example would be if
you had a map with x,y coordinates and you wanted to place items on that map
at their location.

grey at mania:~} python
Python 2.4.4 (#2, Aug 16 2007, 02:03:40) 
[GCC 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> x = 1
>>> y = 1
>>> coord = (x, y)
>>> map = {}
>>> map[coord] = "Something at x%s, y%s" % coord
>>> map
{(1, 1): 'Something at x1, y1'}
>>> map[(1,1)]
'Something at x1, y1'
>>> if map.has_key(coord):
...     print "Found it!"
... 
>>> if map.has_key((1,1)):
...     print "Found it!"
... 
Found it!
>>> for loc in map:
...     print "X: %s, Y: %s - %s" % (loc[0], loc[1], map[loc])
... 
X: 1, Y: 1 - Something at x1, y1

    The lists cannot be indexes to directories because they are mutable.  
[1. 1] might not be [1, 1] the next time you look for it.  (1, 1) always will.  

-- 
         Steve C. Lamb         | But who decides what they dream?
       PGP Key: 1FC01004       |   And dream I do...  
-------------------------------+---------------------------------------------



From danielk at featherbrain.net  Wed Oct 10 20:58:00 2007
From: danielk at featherbrain.net (Daniel Klein)
Date: Thu, 11 Oct 2007 00:58:00 GMT
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>
Message-ID: <v0tqg35skgv1jc3d1aelqp4t090sv70s77@4ax.com>

On Fri, 05 Oct 2007 07:44:46 -0400, Steve Holden <steve at holdenweb.com>
wrote:

>I've just been told by the editors at Python Magazine that the first 
>issue is out. It's all-electronic so anyone can download and read it. 

The website states that existing subcribers are notified of the
availability of new issues automatically, yet I received no such
notification.

Daniel Klein


From besturk at gmail.com  Sun Oct 14 14:02:36 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 14 Oct 2007 11:02:36 -0700
Subject: int to str in list elements..
Message-ID: <1192384956.127445.316920@e9g2000prf.googlegroups.com>

Hi..
I have a list as a=[1, 2, 3 .... ] (4 million elements)
and
b=",".join(a)
than
TypeError: sequence item 0: expected string, int found
I want to change list to  a=['1','2','3'] but i don't want to use FOR
because my list very very big.
I'm sorry my bad english.
King regards



From robert.kern at gmail.com  Tue Oct 23 20:01:05 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 23 Oct 2007 19:01:05 -0500
Subject: Using arrays in Python - problems.
In-Reply-To: <1193181270.396191.291130@i38g2000prf.googlegroups.com>
References: <mailman.392.1193179875.13605.python-list@python.org>
	<1193181270.396191.291130@i38g2000prf.googlegroups.com>
Message-ID: <ffm209$sk7$1@ger.gmane.org>

marek.rocki at wp.pl wrote:
> attackwarningred napisa (a):
> 
>> The array F(n) is dynamically allocated earlier on and is sized with
>> reference to shotcount, the number of iterations the model performs. The
>> problem is I can't get something like this to run in Python using numpy,
>> and for the size of the array to be sized dynamically with reference to
>> the variable shotcount. I acknowledge that my knowledge of Python is
>> still really basic (I only started learning it a few days ago) and I'm
>> trying to get out of the Fortran programming mindset but I'm stuck and
>> don't seem to be able to get any further. If anyone could help I'd be
>> really grateful. Thanks very much in advance.
> 
> Hello. If you want your array to be dynamically resized at every loop
> iteration, that might be quite inefficient. How about initialising it
> with a required size?
> 
> F = numpy.array([0]*shotcount)

A more idiomatic version would be this:

  F = numpy.empty((shotcount,), dtype=float)

attackwarningred, you might want to ask your numpy questions on the
numpy-discussion mailing list:

  http://www.scipy.org/Mailing_Lists

-- 
Robert Kern

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



From arnodel at googlemail.com  Thu Oct 25 05:23:03 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Thu, 25 Oct 2007 09:23:03 -0000
Subject: local variable referenced before assignment
In-Reply-To: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
Message-ID: <1193304183.245062.25750@v3g2000hsg.googlegroups.com>

On Oct 25, 10:02 am, Pete Bartonly <n... at try.invalid> wrote:
> Quick question, probably quite a simple matter. Take the follow start of
> a method:
>
> def review(filesNeedingReview):
>
>      for item in filesNeedingReview:
>          (tightestOwner, logMsg) = item
>
>          if (logMsg != None):
>              for logInfo in logMsg.changed_paths:
>
> This generates the error:
>
>    UnboundLocalError: local variable 'logMsg' referenced before assignment

Check your indentation?
Seems to me that you might really have:

def review(...):
    for ...:
        ....
    if (logMsg...):
        ....

HTH

--
Arnaud




From arne at vajhoej.dk  Sun Oct 21 10:50:02 2007
From: arne at vajhoej.dk (=?ISO-8859-1?Q?Arne_Vajh=F8j?=)
Date: Sun, 21 Oct 2007 10:50:02 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192972158.250126.203980@v23g2000prn.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
Message-ID: <471b6714$0$90276$14726298@news.sunsite.dk>

llothar wrote:
>> I'm, not sure that I'm getting your point, but are you trying to argue that
>> _not_ knowing mathemathics makes you a better programmer?
> 
> No but it doesn't help you very much either. They are just different
> skills.

Many things within programming have a foundation in mathematics
and mathematical logic.

>> Or maybe that learning math is useless to a programmer?
> 
> No and at least the mathematical idea of building a universe on a
> basic set
> of axioms is pretty exciting for a programmer. But it's the idea not
> the real
> wisdom (I never had to use any serious maths in my 25 years of
> programming)
> that you need as a programmer

Depends obvious a bot on what you consider serious math.

Expression evaluation, floating point characteristics, relational
database theory, simulation, optimum location, encryption etc.
are all based on mathematics of different levels.

>> This must be the most ignorant post I've seen
>> this week. The *best* programmers I've seen actually had mathematic education.
> 
> Depends. I would call Knuth as one of the worst programmers. Look at
> his total
> failures on literature programming. Software Engineering is something
> very
> different.

I think you will find it very difficult to write a piece of code
that are not heavily influenced by Knuth.

Arne


From bmccann at andmore.com  Fri Oct 19 16:21:37 2007
From: bmccann at andmore.com (McCann, Brian)
Date: Fri, 19 Oct 2007 16:21:37 -0400
Subject: Need some help with my first Twisted program
Message-ID: <A272EB3E7DECD641A6A8854D613787250159859A@diopside.andmore.com>

I posted this to the Twisted list...figured I'd try here too.

I'm looking for what is probably an simple solution I can't figure out
on my own.  I'm writing an SSH server based on the example on the web
(using conch).  I'm trying to figure out how to detect when the client
exists (for example, when I just close out PuTTY), but I can't get this
to work right.  Looking through the API docs I found "connectionLost()",
which I put in my protocol class (EchoProtocol in the example), but it's
never getting called.  Here's my connectionLost def:

    def connectionLost(self,reason):
        print "lost:%s" %reason
        self.serialServerSocket.close()
        self.alive = False
        self.serialSocketReadThread.join()

Can someone please tell me what I'm doing wrong?

Thanks,
--Brian


From no at spam.com  Wed Oct 31 13:00:04 2007
From: no at spam.com (Farshid Lashkari)
Date: Wed, 31 Oct 2007 10:00:04 -0700
Subject: simple? embedding question
In-Reply-To: <1193792532.673956.104530@57g2000hsv.googlegroups.com>
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
	<4727854D.3050201@spam.com>
	<1193789085.081049.152410@22g2000hsm.googlegroups.com>
	<bgQVi.1175$RA6.827@newsfe03.phx>
	<1193792532.673956.104530@57g2000hsv.googlegroups.com>
Message-ID: <hw2Wi.1866$qQ5.1771@newsfe07.phx>

sndive at gmail.com wrote:
> it works!
> could i cache maindict pointer in a global var or am i condemned to
> call
>                 PyObject* mainmod = PyImport_AddModule("__main__");
>                 assert(mainmod);
>                 PyObject* maindict = PyModule_GetDict(mainmod);
>                 assert(maindict);
> every time i want to PyRun_String?
> i call Py_Finalize only atexit.
> 
> i also found boost library docs of some help:
> http://service-spi.web.cern.ch/service-spi/external/Boost/1.30.0/rh73_gcc32/libs/python/doc/tutorial/doc/using_the_interpreter.html
> 
> btw what kind of object is returned in case i use Py_file_input
> in PyRun_String?
> 

Yes, you can keep a reference to maindict if you wish, but make sure you 
increment the reference count since PyModule_GetDict() returns a 
borrowed reference.

-Farshid


From fuzzyman at gmail.com  Mon Oct 29 17:04:10 2007
From: fuzzyman at gmail.com (Fuzzyman)
Date: Mon, 29 Oct 2007 21:04:10 -0000
Subject: Automatic Generation of Python Class Files
In-Reply-To: <ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
Message-ID: <1193691850.854354.301970@d55g2000hsg.googlegroups.com>

On Oct 22, 6:43 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> Sunburned Surveyor wrote:
> > Contents of input text file:
>
> > [Name]
> > Fire Breathing Dragon
>
> > [Properties]
> > Strength
> > Scariness
> > Endurance
>
> > [Methods]
> > eatMaiden argMaiden
> > fightKnight argKnight
>
> > Generated Python Class File:
>
> > def class FireBreathingDragon:
>
> >    def getStrength(self):
> >       """
> >       Docstring goes here.
>
> >       @return
> >       @rtype
> >       """
> >       return self.strength
>
> >    def setStrength(self, argStrength):
> >       """
> >       Docstring goes here.
>
> >       @param argStrength
> >       @ptype
> >       """
> >       return self.strength
>
> >    def eatMaiden(self, argMaiden):
> >       """
> >       Docstring goes here.
>
> >       @param argMaiden
> >       @ptype
> >       """
>
> This should instead generate::
>
> # Inherit from object. There's no reason to create old-style classes.


We recently had to change an object pipeline from new style classes to
old style. A lot of these objects were being created and the *extra
overhead* of new style classes was killing us. :-)

Michael
http://www.manning.com/foord





From wbrehaut at mcsnet.ca  Fri Oct  5 17:22:00 2007
From: wbrehaut at mcsnet.ca (Wayne Brehaut)
Date: Fri, 05 Oct 2007 15:22:00 -0600
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>	<13gcjeqbhmh152c@corp.supernews.com>	<mailman.1586.1191596681.2658.python-list@python.org>	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
	<47069e40$0$16410$426a74cc@news.free.fr>
	<pn8dg3d7iu3fpn7pthn3orlmvvqmqvfi7v@4ax.com>
	<4706a7a9$0$12477$426a34cc@news.free.fr>
Message-ID: <rjadg35sdcl928mqv52buk8livucrerivs@4ax.com>

On Thu, 04 Oct 2007 04:52:13 +0200, Bruno Desthuilliers
<bdesth.quelquechose at free.quelquepart.fr> wrote:

>Wayne Brehaut a ?crit :
>> On Thu, 04 Oct 2007 04:12:04 +0200, Bruno Desthuilliers
>> <bdesth.quelquechose at free.quelquepart.fr> wrote:
>> 
>> 
>>>J. Clifford Dyer a ?crit :
>(snip)
>>>>Well, it's also unpythonic to start numbering a sequence at 1, but
>>>>it's clearly the right thing to do in this case.
>>>
>>>As far as I'm concerned, if I had to number a magazine about 
>>>programming, I'd obviously start with 0.
>> 
>> And since the "first" issue is free that would be best here too.
>> 
>>>Then it would be n?1, n?10, 
>>>n?11, n?100 etc !-)
>> 
>> But probably with enough leading zeros to last the expected lifetime
>> (8 bits should about do it?)  so they'd sort properly:
>> 
>> 0000 0000
>> 0000 0001
>> etc.
>
>Mmm... sort of reminds me of y2k.

Funny, I was thinking IPv4.

www


From pavlovevidence at gmail.com  Fri Oct 12 11:58:35 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Fri, 12 Oct 2007 08:58:35 -0700
Subject: Simple question about python logic.
In-Reply-To: <1192203159.292973.204470@v23g2000prn.googlegroups.com>
References: <1192203159.292973.204470@v23g2000prn.googlegroups.com>
Message-ID: <1192204715.933363.205030@v29g2000prd.googlegroups.com>

On Oct 12, 11:32 am, "seungchan... at gmail.com" <seungchan... at gmail.com>
wrote:
> I have a file containing following data. But the dimension can be
> different.
>
> A B C D E F G
> 3 4 1 5 6 2 4
> 7 2 4 1 6 9 3
> 3 4 1 5 6 2 4
> 7 2 4 1 6 9 3
> .
> .
> .
> .
>
> What is the best approach to make a column vector with the name such
> as A B, etc?

Use a dict.  dict objects are the main way we map names to objects on
the fly.  Simple example:

columns = {}
columns["A"] = [3,7,3,3]
columns["B"] = [4,2,4,2]


Filling in the columns with data from your file is left as an
exercise.


Carl Banks



From krypto.wizard at gmail.com  Tue Oct 30 16:30:09 2007
From: krypto.wizard at gmail.com (Krypto)
Date: Tue, 30 Oct 2007 20:30:09 -0000
Subject: Python Interview Questions
In-Reply-To: <mailman.658.1193771958.13605.python-list@python.org>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
	<mailman.658.1193771958.13605.python-list@python.org>
Message-ID: <1193776209.526442.141350@k79g2000hse.googlegroups.com>



> Good luck with your interviewing and hope this helped,
>
> -tkc

Well, I was looking exactly for this. Many thanks to you Tim. After
going through your list I came to know that I know nothing in Python
and have to catch up a whole lot.



From gardsted at yahoo.com  Sun Oct  7 04:48:27 2007
From: gardsted at yahoo.com (gardsted)
Date: Sun, 07 Oct 2007 10:48:27 +0200
Subject: Mysql class works like php
In-Reply-To: <4705e772$0$19642$426a74cc@news.free.fr>
References: <mailman.1548.1191539444.2658.python-list@python.org>
	<4705e772$0$19642$426a74cc@news.free.fr>
Message-ID: <47089d5b$0$21926$157c6196@dreader1.cybercity.dk>

Bruno Desthuilliers wrote:
> Andrey a ?crit :
>> Hi
>>
>> just a quick question about using MySQL module... are there any api / 
>> class available to give a higher level in working with Mysql in python?
>> such as
>> db.fetch_array(),
>> db.fetch_rows(),
>> db.query(),
>> for eachrow in db.fetch_array():
>>     xxxx
> 
> You really find this "higher level" than Python's db-api ???
> 
>> just as easy as PHP?
> 
> D'oh :(
> 
> 
> // PHP:
> // suppose we have a valid $connection
> $q = mysql_query("select * from yaddayadda", $connection)
> if (is_resource($q)) {
>   while($row = mysql_fetc_row($q)) {
>     do_something_with($row);
>   }
>   mysql_free($q);
> }
> else {
>   // handle the error here
> }
> 
> # python:
> # suppose we have a valid connection
> cursor = connection.cursor() # can specify the kind of cursor here
> try:
>   cursor.execute("select * from yaddayadda")
> except MysqlError, e:
>   # handle error here
> else:
>   for row in cursor:
>     do_something_with(row)
> 
> # not strictly necessary, you can reuse the same
> # cursor for another query
> cursor.close()
> 
> 
> As far as I'm concerned, I fail to see how PHP is "higher level" or 
> "easier" here.
> 
> 

Maybe You should look into sqlalchemy.
I am also a newbie at that, but it allows you to do things like this 
(untested):
             sqltxt="""select * from mytable"""
             result=mysession.execute(sqltxt)
             for r in result.fetchmany():

which pretty good mimics the 'for eachrow in db.fetch_array():'

yours politely
jorgen




From paul.hankin at gmail.com  Fri Oct 19 03:33:42 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Fri, 19 Oct 2007 07:33:42 -0000
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <mailman.201.1192778546.13605.python-list@python.org>
References: <mailman.201.1192778546.13605.python-list@python.org>
Message-ID: <1192779222.618164.321910@y27g2000pre.googlegroups.com>

On Oct 19, 12:24 am, stef mientki <stef.mien... at gmail.com> wrote:
> I generate dynamically a sequence of values,
> but this "sequence" could also have length 1 or even length 0.
>
> So I get some line in the form of:
>       line = '(2,3,4)'
>       line = ''
>       line = '(2)'
> (in fact these are not constant numbers, but all kind of integer
> variables, coming from all over the program, selected from a tree, that
> shows all "reachable" variables)
>
> So in fact I get the value from an exec statement, like this
>       exec 'signals = ' + line
>
> Now I want to iterate over "signals", which works perfect if there are 2
> or more signals,
> but it fails when I have none or just 1 signal.
>     for value in signals :
>         do something
>
> As this meant for real-time signals, I want it fast, so (I think) I
> can't afford extensive testing.
>
> Any smart solution there ?

First: don't collect data into strings - python has many container
types which you can use.

Next, your strings look like they're supposed to contain tuples. In
fact, tuples are a bit awkward sometimes because you have to use
'(a,') for a tuple with one element - (2) isn't a tuple of length one,
it's the same as 2. Either cope with this special case, or use lists.
Either way, you'll have to use () or [] for an empty sequence.

--
Paul Hankin



From besturk at gmail.com  Thu Oct 18 11:47:14 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 08:47:14 -0700
Subject: Convert string to command..
In-Reply-To: <5npcq3Fjgi5nU1@mid.uni-berlin.de>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
Message-ID: <1192722434.921870.112350@k35g2000prh.googlegroups.com>

On Oct 18, 6:35 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Abandoned wrote:
> > On Oct 18, 6:14 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> >> Abandoned wrote:
> >> > Thanks you all answer..
> >> > But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
> >> > (100.000 elements)
> >> > Is there any easy alternative ?
>
> >> How big? How slow? For me, a 10000-element list takes  0.04 seconds to be
> >> parsed. Which I find fast.
>
> >> Diez
>
> > 173.000 dict elements and it tooks 2.2 seconds this very big time for
> > my project
>
> Where does the data come from?
>
> Diez

Data come from database..
I want to cache to speed up my system and i save the dictionary to
database for speed up but eval is very slow for do this.
Not: 2.2 second only eval operation.



From patrick.waldo at gmail.com  Sun Oct 28 17:25:04 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Sun, 28 Oct 2007 14:25:04 -0700
Subject: Problem--IOError: [Errno 13] Permission denied
Message-ID: <1193606704.666888.95400@50g2000hsm.googlegroups.com>

Hi all,

After sludging my way through many obstacles with this interesting
puzzle of a text parsing program, I found myself with one final error:

Traceback (most recent call last):
  File "C:\Python24\Lib\site-packages\pythonwin\pywin\framework
\scriptutils.py", line 310, in RunScript
    exec codeObject in __main__.__dict__
  File "C:\Documents and Settings\Patrick Waldo\My Documents\Python
\WORD\try5-2-file-1-all patterns.py", line 77, in ?
    input = codecs.open(input_text, 'r','utf8')
  File "C:\Python24\lib\codecs.py", line 666, in open
    file = __builtin__.open(filename, mode, buffering)
IOError: [Errno 13] Permission denied: 'C:\\text_samples\\test\
\output'

The error doesn't stop the program from functioning as it should,
except the last line of every document gets split with | in between
the words, which is just strange.  I have no idea why either is
happening, but perhaps they are related.

Any ideas?

#For text files in a directory...
#Analyzes a randomly organized UTF8 document with EINECS, CAS,
Chemical, and Chemical Formula
#into a document structured as EINECS|CAS|Chemical|Chemical Formula.

import os
import codecs
import re

path = "C:\\text_samples\\test\\"
path2 = "C:\\text_samples\\test\\output\\"

EINECS = re.compile(r'^\d\d\d-\d\d\d-\d$')
FORMULA = re.compile(r'([A-Z][a-zA-Z0-9]*\.?[A-Za-z0-9]*/?[A-Za-
z0-9]*)')
FALSE_POS = re.compile(r'^[A-Z][a-z]{4,40}\)?\.?')
FALSE_POS1 = re.compile(r'C\.I\..*')
FALSE_POS2 = re.compile(r'vit.*')
FALSE_NEG = re.compile(r'C\d+\.')

def iter_elements(tokens):
    product = []
    for tok in tokens:
        if EINECS.match(tok) and len(product) >= 3:
            match = re.match(FORMULA,product[-1])
            match_false_pos = re.match(FALSE_POS,product[-1])
            match_false_pos1 = re.match(FALSE_POS1,product[-1])
            match_false_pos2 = re.match(FALSE_POS2,product[2])
            match_false_neg = re.match(FALSE_NEG,product[-1])
            if match_false_neg:
                product[2:-1] = [' '.join(product[2:])]
                del product[-1]
                yield product
                product = []
            elif match_false_pos:
                product[2:-1] = [' '.join(product[2:])]
                del product[-1]
                yield product
                product = []
            elif match:
                product[2:-1] = [' '.join(product[2:-1])]
                yield product
                product = []
            elif match_false_pos1 or match_false_pos2:
                product[2:-1] = [' '.join(product[2:])]
                del product[-1]
                yield product
                product = []
            else:
                product[2:-1] = [' '.join(product[2:])]
                del product[-1]
                yield product
                product = []
        product.append(tok)
    yield product

for text in os.listdir(path):
    input_text = os.path.join(path,text)
    output_text = os.path.join(path2,text)
    input = codecs.open(input_text, 'r','utf8')
    output = codecs.open(output_text, 'w', 'utf8')
    tokens = input.read().split()
    for element in iter_elements(tokens):
        output.write('|'.join(element))
        output.write("\r\n")
input.close()
output.close()



From gagsl-py2 at yahoo.com.ar  Fri Oct 19 18:40:19 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 19:40:19 -0300
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
References: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
	<1192821461.555735.248970@v29g2000prd.googlegroups.com>
Message-ID: <op.t0gulhnhx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 16:17:41 -0300, Raymond Hettinger <python at rcn.com>  
escribi?:

> Try heapq.nsmallest().

En Fri, 19 Oct 2007 16:20:29 -0300, Raymond Hettinger <python at rcn.com>  
escribi?:

> Try heapq.nsmallest().

En Fri, 19 Oct 2007 17:22:13 -0300, Raymond Hettinger <python at rcn.com>  
escribi?:

> Try heapq.nsmallest().


	?Just the place for a Snark!? the Bellman cried,
	As he landed his crew with care;
	Supporting each man on the top of the tide
	By a finger entwined in his hair.
	?Just the place for a Snark! I have said it twice:
	That alone should encourage the crew.
	Just the place for a Snark! I have said it thrice:
	What I tell you three times is true.?

THE HUNTING OF THE SNARK
an Agony in Eight Fits
by Lewis Carroll

-- 
Gabriel Genellina



From lasses_weil at klapptsowieso.net  Sun Oct 14 11:54:47 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 14 Oct 2007 17:54:47 +0200
Subject: GLE-like python package
Message-ID: <47123bc8$0$4530$9b4e6d93@newsspool3.arcor-online.net>

Hello there,

I'm exploring possibilities of using python as an alternative to Matlab. 
The obvious way to go seems to be matplotlib for plotting, but I do like 
GLE <URL:http://glx.sourceforge.net/> a lot. One reason is that with GLE 
you can also do diagrams, that is, descriptive pictures (like 
<URL:http://glx.sourceforge.net/examples/diagrams/index.html>)

Is there anything similar for python?

/W


From mdipierro at cti.depaul.edu  Sat Oct 13 11:44:51 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Sat, 13 Oct 2007 10:44:51 -0500
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <fbe2e2100710130301q45de068mab9e32b1e6eccf8a@mail.gmail.com>
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
	<fbe2e2100710130301q45de068mab9e32b1e6eccf8a@mail.gmail.com>
Message-ID: <07D3B93C-2A6D-4651-816D-C1A432BA5146@cti.depaul.edu>

Hi Daniel,

in many respects Gluon is similar to Django and was greatly inspired  
by Django. Some differences are:

Gluon is easier to install - you never need to use the shell, there  
are no configuration files.

Gluon is a web app. You can do all development via a web interface.

You can compile Gluon apps and distribute them in byte-code compiled  
form.

Each Gluon app comes with a ticketing system. If an error occurrs it  
is logged and a ticket is issed. you can then search and retrieve  
errors by date or client-ip.

Making forms is easier than in Django. For example given a db table  
called db.table you can do:
   form=SQLForm(db.table)
   if form.accepts(request.vars,session): pass
these two lines will do everything, including generating the form  
from the table, validating input, inserting in database or modifying  
the form with error messages. This also prevents multiple submission  
of the same form because each form has a unique one-time key.

The template language is pure python but without indentation  
requirements. Django has restrictions on what can go in templates.

The output in the views is escaped by default. In Django it is not.

You can manage internationalization (add language and write  
translations)  from the web interface.

Each app has an automatically generated database administrative  
interface. The Django one is cooler then Gluon's, but the Gluon one  
allows complicated joins in the filter field.

Gluon supports migrations: you just change the definition of a table  
and it ALTERs the table accordingly (drop works in postgres only).  
For example if you change a field from boolean to string, the  
database is altered and the values are converted from boolean to  
string for existing records.

Gluon has a sql.log console to see what changes are made to the  
database.

In Gluon you do not need to import modules. The gluon modules you  
need already imported for you.

Gluon has a top-down design. This means that the Gluon APIs are not  
under development. They are 100% stable. There may be bugs and they  
will be fixed but the syntax and signature of functions is not  
subject to change. This is why I started making Gluon, I am teaching  
a class on web frameworks and the API of Django and TG are not as  
stable as I wish they were. Moreover they have a too steep learning  
curve when compared to Gluon.

Please try it, it is no that time consuming, and send me you comments  
(good or bad)!

Massimo


On Oct 13, 2007, at 5:01 AM, Daniel Fetchinson wrote:

>> Hello everybody,
>>
>> I just joined this mailing list. Thanks for your comments about  
>> gluon.
>>
>> I have posted a short video about it and I am planning to make more
>> over the week-end.
>>
>> http://www.youtube.com/watch?v=VBjja6N6IYk
>>
>> About some of your comments:
>> - the most complex modules (like html and sql ones) have doctests.
>> - the executable versions (win and mac) come with python2.5. Running
>> from source code does not require 2.5 but you probably want sqlite3.
>> - so far I support sqlite3 and postgresql, not mysql (just because I
>> do not use it and had no time for testing it).
>> - yes, there are typos in the documentation. Please point them out to
>> me so that I can fix them.
>> - I am sure there are some minor bugs I am not aware of but as far I
>> tested, it work.
>> - If you report bugs to me I promise to fix them in 48hrs.
>> - please make sure you have the latest version.
>>
>> I very much appreciate comments about gluon (good and bad). Please
>> send me more so that I can improve it.
>>
>> There will be two talks in chicago about gluon next week: at DePaul
>> Linux Users Group on Thursday evening and at the Chicago Linux Users
>> Group on Saturday afternoon. I will try record them and post them.
>>
>> Massimo
>>
>> P.S. Michele Simionato. I have heard your name before? Is it possible
>> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
>> and there is not many of us.
>
>
> Hi Massimo,
>
> In what way is gluon different from existing frameworks most notably
> django and turbogears? What do you think are the advantages to using
> gluon over these two?
>
> Cheers,
> Daniel
> --
> http://mail.python.org/mailman/listinfo/python-list



From diprat7 at gmail.com  Mon Oct  8 10:55:24 2007
From: diprat7 at gmail.com (diprat7 at gmail.com)
Date: Mon, 08 Oct 2007 07:55:24 -0700
Subject: www.yedil.com best hindi entertainment site
Message-ID: <1191855324.787656.223720@r29g2000hsg.googlegroups.com>

www.yedil.com best hindi entertainment site
with vidoes,photo sharing,photo rating features
its really gona rock you
www.yedil.com



From khemkaamit at gmail.com  Thu Oct  4 08:45:57 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Thu, 4 Oct 2007 18:15:57 +0530
Subject: HELP me Am very new one To python
In-Reply-To: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>
References: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>
Message-ID: <1360b7230710040545p36716c5bo960e2eddd761b6cc@mail.gmail.com>

On 10/4/07, Damodhar <damu.be at gmail.com> wrote:
> hi,
>
> Am working in PHP MYSQL. I am very very interest to learn Python but i
> don't Know Little Bit,
> am using windows Xp, Ialready download from
> http://www.python.org/ftp/python/2.5.1/python-2.5.1.ia64.msi
>
> and install into C:\Python25
>
> whats the next step . i Used    Apache 2.0  run as a local server..
>
> whats the next step . please say one by one i already read the
> documentation but i cant get clearer.
>
> how to configure apache where i want to configure .
> if any files want to copy in to apache folder, wahts the procedure to
> start the coding pls help me am very very beginner pls spend some time
> to teach how to do that.please plaes

I presume that you want to do web programming using python.

Have a look at following:

Using mod_python: http://webpython.codepoint.net/mod_python
CGI: http://docs.python.org/lib/module-cgi.html
FastCGI: http://www.fastcgi.com/

You can also explore some of existing web frameworks. Search web for
"python web frameworks", some popular ones are django, pylons etc.

Try to play with one of the above that you like and suits your needs.
If you still get struck , please post specific issues.

I wish and hope learning python would be a pleasing experience !

Cheers,
amit.


-- 
----
Amit Khemka
website: www.onyomo.com
wap-site: www.owap.in


From peter.goodman at gmail.com  Mon Oct 22 13:05:45 2007
From: peter.goodman at gmail.com (Peter Goodman)
Date: Mon, 22 Oct 2007 17:05:45 -0000
Subject: Iteration for Factorials
In-Reply-To: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <1193072745.908968.89190@v23g2000prn.googlegroups.com>

On Oct 22, 8:26 am, Py-Fun <lorna.bu... at gmail.com> wrote:
> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.

def fac_btt(num):
	total = 1
	if num > 1:
		for i in range(1, num+1):
			total *= i
	return total



From erik at myemma.com  Mon Oct 15 19:46:28 2007
From: erik at myemma.com (Erik Jones)
Date: Mon, 15 Oct 2007 18:46:28 -0500
Subject: Order of tuples in dict.items()
In-Reply-To: <13h7slmtjcskk88@corp.supernews.com>
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
	<13h55uj8pogd4ea@corp.supernews.com>
	<mailman.22.1192459653.13605.python-list@python.org>
	<1192482687.653615.182140@v29g2000prd.googlegroups.com>
	<13h7slmtjcskk88@corp.supernews.com>
Message-ID: <2BE174E3-86D8-4213-95C3-27DADFDECAD3@myemma.com>


On Oct 15, 2007, at 6:07 PM, Steven D'Aprano wrote:

> On Mon, 15 Oct 2007 14:11:27 -0700, John Machin wrote:
>
>> On Oct 16, 12:47 am, Erik Jones <e... at myemma.com> wrote:
>>
>>> Not between two consecutive reads, no.  However, after any  
>>> resizing of
>>> a dict the result of Python's hash function for any given newly
>>> inserted key is extremely likely to be different than it would have
>>> been before the resizing, i.e. the method may be the same, but the
>>> result is different.
>>
>> Could you please supply the basis for the above assertion? My  
>> reading of
>> the docs for the built-in hash function, the docs for an object's
>> __hash__ method, and the source (dictobject.c, intobject.c,
>> stringobject.c) indicate (as I would have expected) that the hash  
>> of an
>> object is determined solely by the object itself, not by the  
>> history of
>> insertion into a dict (or multiple dicts!?).
>>
>> Note that position_in dict = some_function(hash(obj),  
>> size_of_dict) ...
>> perhaps you are conflating two different concepts.
>
>
> The hash() function doesn't even take a dictionary as an argument  
> -- it
> simply can't be dependent on the history of insertions into the
> dictionary, because it can't know what dictionary to look at!
>
> But as you say, the position in the dictionary itself depends on the
> result of the hash function, and the size of the dictionary, and  
> what's
> already in the dict (that is to say, the history of insertions and
> deletions). That's how hash tables work.

John, sorry, I never saw your reply to my initial posting.  What I  
was referring to was indeed the some_function in your example, not  
the actual hash() function available in the standard library.  I was  
in no way conflating the two, the confusing is just one over the  
terminology as some_function IS a hash function.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From adam.donahue at gmail.com  Thu Oct 25 11:07:31 2007
From: adam.donahue at gmail.com (Adam Donahue)
Date: Thu, 25 Oct 2007 15:07:31 -0000
Subject: Bypassing __getattribute__ for attribute access
Message-ID: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>

As an exercise I'm attempting to write a metaclass that causes an
exception to be thrown whenever a user tries to access
'attributes' (in the traditional sense) via a direct reference.

Consider:

    class X( object ):
        y = 'private value'
        def get_y( self ): return self.y

Normally one can access y here via:

    X().y

or

    X().get_y()

I want the former case, however, to throw an exception.

I figured the way to do this would be to introduce a metaclass that
overrides the default __getattrribute__ call and throws an exception.
So my first attempt was something like:

    class XType( type ):
        def __my_getattribute__( self, name ):
             raise AttributeError()
        def __init__( klass, name, bases, dict ):
            super( XType, klass ).__init__( name, bases, dict )
            setattr( klass, '__getattribute__',
klass.__my_getattribute__ )

But whereas the X().y attribute behaves as I intend, the X().get_y()
returns raises that exception as well:

>>> X().y
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 3, in __my_getattribute__
AttributeError
>>> X().get_y()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 3, in __my_getattribute__
AttributeError

So it looks as if 'attribute' here means any key in self.__dict__,
whether referenced via self.var, self.__dict__['var'] (because this
references __dict__), or getattr( self, 'var' ) (which is the same as
a direct self.var access, I believe).

So I tried:

    class XType( type ):
        def __my_getattribute__( self, name ):
            if name != '__dict__':
                raise AttributeError()
            return super( self.__class__,
self ).__getattribute__( name )
        def __init__( klass, name, bases, dict ):
            super( XType, klass ).__init__( name, bases, dict )
            setattr( klass, '__getattribute__',
klass.__my_getattribute__ )

This allows me to access X().__dict__ directly (and then
X().__dict__['y']), but it still limits caller access to the get_y()
method.

It sounds then like the "solution" will be to check whether the name
referenced is called __dict__ or is a method or function type,
otherwise throw the exception, and to ensure all internal calls are
handled via self.__dict__[name] not self.name.

Something like:

    import types
    class XType( type ):
        def __my_getattribute__( self, name ):
            if name != '__dict__' and not
isinstance( self.__dict__[name], types.FunctionType ):
                raise AttributeError()
            return super( self.__class__,
self ).__getattribute__( name )
        def __init__( klass, name, bases, dict ):
            super( XType, klass ).__init__( name, bases, dict )
            setattr( klass, '__getattribute__',
klass.__my_getattribute__ )

Of course this is imperfect as a user can simply bypass the
__getattribute__ call too and access __dict__ directly, but it's
closer to what I was thinking.  The problem is the return value for
functions is not bound - how do I bind these to the associated
instance?

(Caveat - I am not sure whether using __get__ itself in lieu of
__getattribute__ would be a better solution; but I would like to see
how binding would be done here for general knowledge.)

Thanks.

Adam



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Oct  6 20:48:59 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 07 Oct 2007 02:48:59 +0200
Subject: Segmentation fault..
References: <1191668481.171014.54840@57g2000hsv.googlegroups.com>
Message-ID: <5mqonrFeu74dU1@mid.individual.net>

Abandoned wrote:
> I run a my script and 3-4 minutes later give me an error
> "segmentation fault".
> What is the reason of this error ?

The reason is that the process tries to write to a memory address it
outside of its allocated segments.

Regards,


Bj?rn

-- 
BOFH excuse #20:

divide-by-zero error



From bj_666 at gmx.net  Thu Oct 11 03:44:42 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 07:44:42 GMT
Subject: "".join(string_generator()) fails to be magic
References: <mailman.71.1192084784.927.python-list@python.org>
	<5n5vinFghr61U1@mid.uni-berlin.de>
	<1192086130.451107.324440@50g2000hsm.googlegroups.com>
Message-ID: <5n62j9Fghr61U2@mid.uni-berlin.de>

On Thu, 11 Oct 2007 07:02:10 +0000, thebjorn wrote:

> On Oct 11, 8:53 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>> Even if `str.join()` would not convert the generator into a list first,
>> you would have overallocation.  You don't know the final string size
>> beforehand so intermediate strings must get moved around in memory while
>> concatenating.  Worst case: all but the last string are already
>> concatenated and the last one does not fit into the allocated memory
>> anymore, so there is new memory allocates that can hold both strings ->
>> double amount of memory needed.
>
> Perhaps realloc() could be used to avoid this?  I'm guessing that's
> what cStringIO does, although I'm too lazy to check (I don't have
> source on this box). Perhaps a cStringIO.getvalue() implementation
> that doesn't copy memory would solve the problem?

How could `realloc()` solve that problem?  Doesn't `realloc()` copy the
memory too if the current memory block can't hold the new size!?

And `StringIO` has the very same problem, if the `getvalue()`
method doesn't copy you have to make copies while writing to the `StringIO`
object and the buffer is not large enough.

Ciao,
	Marc 'BlackJack' Rintsch


From mensanator at aol.com  Sun Oct  7 12:04:46 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Sun, 07 Oct 2007 09:04:46 -0700
Subject: Top Programming Languages of 2013
In-Reply-To: <1191772831.195100.90770@k79g2000hse.googlegroups.com>
References: <mailman.1621.1191737112.2658.python-list@python.org>
	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>
	<47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
	<1191772831.195100.90770@k79g2000hse.googlegroups.com>
Message-ID: <1191773086.039485.164680@50g2000hsm.googlegroups.com>

On Oct 7, 11:00?am, chris.monsa... at gmail.com wrote:
> On Oct 7, 11:54 am, Wildemar Wildenburger
>
>
>
>
>
> <lasses_w... at klapptsowieso.net> wrote:
> > Kay Schluehr wrote:
> > > On Oct 7, 8:05 am, Dick Moores <r... at rcblue.com> wrote:
> > >> <http://www.redcanary.ca/view/top-programming>
>
> > >> Dick Moores
>
> > > Despite my doubts that Ajax and .NET will be programming languages in
> > > 2013 a more interesting question is: what could push Python forward
> > > s.t. it eats such a large piece of the PL cake?
>
> > import friends
> > import sex
>
> > try:
> >      sex.have()
> > except ErrectionError, PrematureError:
> >      pass
> > finally:
> >      sex.brag(friends)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> KeyError: 'woman'

Looks like 'men' then.




From beingthexemplarylists at gmail.com  Thu Oct 18 02:53:22 2007
From: beingthexemplarylists at gmail.com (warhero)
Date: Thu, 18 Oct 2007 06:53:22 -0000
Subject: importing modules question
In-Reply-To: <1192689670.456814.55850@i13g2000prf.googlegroups.com>
References: <1192689670.456814.55850@i13g2000prf.googlegroups.com>
Message-ID: <1192690402.234584.71040@q3g2000prf.googlegroups.com>

got it figured out. nevermind.



From vinay_sajip at yahoo.co.uk  Thu Oct 18 13:26:59 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Thu, 18 Oct 2007 10:26:59 -0700
Subject: python logging module and custom handler specified in config file
In-Reply-To: <mailman.21.1192458649.13605.python-list@python.org>
References: <mailman.21.1192458649.13605.python-list@python.org>
Message-ID: <1192728419.133020.133590@q5g2000prf.googlegroups.com>

On 15 Oct, 15:15, Frank Aune <Frank.A... at broadpark.no> wrote:
> What I'm wondering, is if its possible to specify the database handler in a
> config file like:
>
> [handler_database]
> class=DBHandler
> level=DEBUG
> formatter=database
> args=('localhost', uid='root')
>
> I've seen the log_test14.py example bundled withloggingmodule, which
> describes the DBHandler class and I can get it working if I attach this
> handler to the root logger inside my application, but I would really like to
> do it through a config file like above. But since thelogging.handlers module
> does not know about the DBHandler class, obviously this does not work.
>
> I was thinking perhaps specifying module and classname in the class= option
> above, like class=dbhandler.DBHandler, but it will just complain that
> name 'dbhandler' is not defined.
>
> Is this possible to archieve somehow?
>

The values in the config file are interpreted in the context of the
logging module's namespace. Hence, one way of achieving what you want
is putting any custom handlers in
a module of your own, and providing a binding in the logging module's
namespace. For example: assuming your DBHandler is defined in a module
customhandlers, you could do this somewhere in your code, before
loading the configuration:

import logging
import customhandlers # Use your own module name here

logging.custhandlers = customhandlers # Bind your module to
"custhandlers" in logging

and then your logging configuration can refer to
"custhandlers.DBHandler". Of course I merely used "custhandlers" and
"customhandlers" to show how you can bind to an arbitrary name.

The same technique applies to the arguments passed to the constructor.

Hope this helps,

Vinay Sajip




From lew at lewscanon.com  Thu Oct  4 09:30:13 2007
From: lew at lewscanon.com (Lew)
Date: Thu, 04 Oct 2007 09:30:13 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <87ir5n2q5c.fsf@lion.rapttech.com.au>
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<87ir5n2q5c.fsf@lion.rapttech.com.au>
Message-ID: <LbOdnTQO_ph7d5nanZ2dnUVZ_tOtnZ2d@comcast.com>

Tim X wrote:
> "The Americans are identical to the British in all respects except, of
> course, language."  Oscar Wilde

> "We (the British and Americans) are two countries separated by a common
> language.  G.B. Shaw


>  There is a well-known saying: Two nations separated by a common language. However, this phrase doesn't seem to have been positively recorded in this form by anyone.
> 
> In The Canterville Ghost Oscar Wilde wrote:
> 
>  /We have really everything in common with America nowadays except, of course, language/
> 
> In a 1951 book of quotations, and without attributing a source, George Bernard Shaw was credited with saying:
> 
>  /England and America are two countries separated by the same language/
> 
> Even Dylan Thomas had his say in a radio talk in the early 50s:
> 
>  /[European writers and scholars in America are] up against the barrier of a common language/
> 
> But where the original phrase came from, nobody knows, and it is probably simply incorrectly quoted.
<http://yedda.com/questions/origin_famous_sentence_quotations_8625651351715/>

-- 
Lew


From python at gjdenbesten.nl  Sat Oct 20 10:04:22 2007
From: python at gjdenbesten.nl (Gert-Jan)
Date: Sat, 20 Oct 2007 16:04:22 +0200
Subject: Dealing with "funny" characters
In-Reply-To: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
Message-ID: <471A0AE6.4000806@gjdenbesten.nl>

sophie_newbie schreef:
> Hi, I want to store python text strings that characters like "?" "?"
> in a mysql varchar text field. Now my problem is that mysql does not
> seem to accept these characters. I'm wondering if there is any way I
> can somehow "encode" these characters to appear as normal characters
> and then "decode" them when I want to get them out of the database
> again?


It seems you'll have to use Unicode in your program rather than 'plain' 
strings.

Before storing an unicode textstring in a database or a file, you must 
encode it using an appropriate encoding/codepage, for example:

outputstring = unicodeobject.encode('utf-8')


This is not an easy subject. But it isn't very hard either. Please 
search the Python documentation using these keywords: Unicode, decoding 
and encoding.


But you should read this first: 
http://www.joelonsoftware.com/articles/Unicode.html
It's an entertaining introduction to the world of codepages and unicode :-)


Regards,
Gert-Jan



From velman at cox.net  Sun Oct 14 14:19:43 2007
From: velman at cox.net (John Velman)
Date: Sun, 14 Oct 2007 11:19:43 -0700
Subject: Python on imac
References: <8ocQi.24253$054.21605@newsfe14.phx>
Message-ID: <03tQi.7629$fd2.4411@newsfe07.phx>

Thanks to all.  I'll look into wx before I get too much further.

John V.



From stef.mientki at gmail.com  Fri Oct 19 12:38:06 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Fri, 19 Oct 2007 18:38:06 +0200
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <13hhicd14jrt5e3@corp.supernews.com>
References: <mailman.201.1192778546.13605.python-list@python.org>	<1192779222.618164.321910@y27g2000pre.googlegroups.com>	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>
	<13hhicd14jrt5e3@corp.supernews.com>
Message-ID: <4718DD6E.3020003@gmail.com>

Steven D'Aprano wrote:
> On Fri, 19 Oct 2007 16:19:32 +0200, stef wrote:
>
>   
>> Well I'm not collecting data, I'm collecting pointers to data.
>>     
>
> I beg to differ, you're collecting data. How that data is to be 
> interpreted (a string, a number, a pointer...) is a separate issue.
>
>
>   
>> This
>> program simulates a user written program in JAL. As Python doesn't
>> support pointers, instead I collect names.
>>     
>
> This doesn't make any sense to me. If your user-written program is 
> supplying pointers (that is, memory addresses like 0x15A8), how do you 
> get a name from the memory address?
>
>
> If you are trying to emulate pointer-manipulation, then the usual way to 
> simulate a pointer is with an integer offset into an array:
>
> # initialise your memory space to all zeroes:
> memory = [chr(0)]*1024*64  # 64K of memory space, enough for anyone
> NULL = 0
> pointer = 45
> memory[pointer:pointer + 5] = 'HELLO'
> pointer += 6
> memory[pointer:pointer + 5] = 'WORLD'
>
>
>   
If there is a better way, I'ld like to hear it.
I understand that execute is dangerous.

I don't have pointers, I've just names (at least I think).
Let me explain a little bit more,
I want to simulate / debug a user program,
the user program might look like this:

   x = 5
   for i in xrange(10):
       x = x + 1

So now I want to follow the changes in "x" and "i",
therefor in the background I change the user program a little bit, like 
this

def user_program():
   x = 5    ; _debug(2)
   global x,i
   _debug (3)
   for i in xrange(10):
       _debug (3)
       x = x + 1    ; _debug (4)

And this modified user program is now called by the main program.
Now in the _debug procedure I can set breakpoints and watch x and i.
But as in this case both a and i are simple integers,
I can not reference them and I need to get their values through their 
names,
and thus a execute statement.

I couldn't come up with a better solution ;-)
(There may be no restrictions laid upon the user program, and indeed 
name clashing is an accepted risk).

cheers,
Stef






From Cory.Leach at gmail.com  Thu Oct 18 01:59:17 2007
From: Cory.Leach at gmail.com (Cory)
Date: Thu, 18 Oct 2007 05:59:17 -0000
Subject: Embedded Boost.Python Enum
Message-ID: <1192687157.036646.234790@t8g2000prg.googlegroups.com>

Hi,

I have a hopefully quick question about how to use Boost.Python to
export an Enum.
I am embedding python in C++ and am currently exporting my classes in
the following way:

nameSpace["OBJECT"] = class_<OBJECT>("OBJECT")
	.def("getType", &OBJECT::getType)
	.def("setSprite", &OBJECT::setSprite);

So following this, I assumed that when exporting an enum the following
should work:

nameSpace["OBJECT_TYPE"] = enum_<OBJECT_TYPE>("OBJECT_TYPE")
			.value("GENERIC_OBJECT",GENERIC_OBJECT)
			.value("MAP_OBJECT",MAP_OBJECT)
			.value("TOTAL_OBJECT_TYPES",TOTAL_OBJECT_TYPES)
			.export_values();

while the above compiles, it causes the following run time exception:

AttributeError: 'NoneType' object has no attribute 'OBJECT_TYPE'

I took a look at the documentation and the only explanation I found
for enum appeared to be for extending python with modules. using the
following form:

BOOST_PYTHON_MODULE(enums)
{
    enum_<color>("color")
        .value("red", red)
        .value("green", green)
        .export_values()
        .value("blue", blue)
        ;

}

I COULD do the above, I would prefer the first method if possible. I
however do not know how to import the module if it is statically
linked because doing a simple import does not work and I am not
familiar enough with the boost.python library, Python C API, or Python
itself to know how to set it up. So My question is this:

How can I either make the first method of adding an enum work and not
throw the exception, OR once I create the BOOST_PYTHON_MODULE in an
embedded python c++ program how to I then import that module into my
embedded python?

Thanks in advance for any help

-Cory



From bignose+hates-spam at benfinney.id.au  Tue Oct 30 18:14:17 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 31 Oct 2007 09:14:17 +1100
Subject: Python Interview Questions
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
Message-ID: <877il4fdxi.fsf@benfinney.id.au>

Krypto <krypto.wizard at gmail.com> writes:

> I am now appearing for Job Interviews these days and I am wondering
> if anybody of you appeared for a Python Interview. Can you please
> share the questions you were asked. That will be great help to me.

I've given some interviews for programming positions. I find it
worthless to ask questions about the language; instead, I ask the
applicant *what they've done* with the language.

Then, I ask them to write some code, usually something simple but
poorly-specified, and observe their approach to the task. That tells
me far more about their knowledge of the language than answers to quiz
questions; it also tells me far more about them as a programmer, which
is what I actually care about.

-- 
 \               "Any intelligent fool can make things bigger and more |
  `\      complex... It takes a touch of genius ? and a lot of courage |
_o__)           ? to move in the opposite direction." ?Albert Einstein |
Ben Finney


From sjmachin at lexicon.net  Wed Oct  3 20:23:52 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 03 Oct 2007 17:23:52 -0700
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <Xns99BEE0D44EC14duncanbooth@127.0.0.1>
References: <Xns99BED1C4FA1CFduncanbooth@127.0.0.1>
	<mailman.1483.1191444874.2658.python-list@python.org>
	<Xns99BEE0D44EC14duncanbooth@127.0.0.1>
Message-ID: <1191457432.585517.137850@22g2000hsm.googlegroups.com>

On Oct 4, 7:06 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Steve Holden <st... at holdenweb.com> wrote:
> >> No, that will uppercase the string, but it doesn't (and shouldn't)
> >> strip the accents:
>
> > I can agree that is doesn't (though I am taking your word for it), but
> > a French person will definitely feel it's doing the wrong thing. Upper
> > case letters aren't accented in written French.
>
> I didn't know that, and I'm not sure I believe it: but then the French
> tend to have conventions honoured more in the breach than the observance. I
> just hit a few French websites, and the first one that I found which had
> any capital letters that might be accented had four accented capital
> letters on its front page (two capitalized words and two words in block
> capitals).

The usual rationale for such treatment of accented characters is for
fuzzy matching:
if upshiftedunaccented(text1) == upshiftedunaccented(text2):




From ricaraoz at gmail.com  Mon Oct 29 12:32:55 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Mon, 29 Oct 2007 13:32:55 -0300
Subject: sorting data
In-Reply-To: <aa405c1f0710290224gb307d45lf8aadf16055b1d0@mail.gmail.com>
References: <aa405c1f0710290224gb307d45lf8aadf16055b1d0@mail.gmail.com>
Message-ID: <47260B37.8080200@bigfoot.com>

Beema shafreen wrote:
> hi all,
>            I have problem to sort the data.. the file includes data as
> follow.
> file:
> chrX:    123343123    123343182    A_16_P41787782
> chrX:    123343417    123343476    A_16_P03762840
> chrX:    123343460    123343519    A_16_P41787783
> chrX:    12334336    12334395    A_16_P03655927
> chrX:    123343756    123343815    A_16_P03762841
> chrX:    123343807    123343866    A_16_P41787784
> chrX:    123343966    123344024    A_16_P21578670
> chrX:    123344059    123344118    A_16_P21578671
> chrX:    12334438    12334497    A_16_P21384637
> chrX:    123344776    123344828    A_16_P21578672
> chrX:    123344811    123344870    A_16_P03762842
> chrX:    123345165    123345224    A_16_P41787789
> chrX:    123345360    123345419    A_16_P41787790
> chrX:    123345380    123345439    A_16_P03762843
> chrX:    123345481    123345540    A_16_P41787792
> chrX:    123345873    123345928    A_16_P41787793
> chrX:    123345891    123345950    A_16_P03762844
> 
> 
> how do is sort the file based on the column 1 and 2 with values......
> using sort option works for only one column and not for the other how do
> is sort both 1 and 2nd column so that the third column does not change.....
> my script:#sorting the file
> start_lis = []
> end_lis = []
> fh = open('chromosome_location_346010.bed','r')
> for line in fh.readlines():
>         data = line.strip().split('\t')
>         start = data[1].strip()
>         end = data[2].strip()
>         probe_id  = data[3].strip()
>         start_lis.append(start)
>        end_lis.append(end)
> start_lis.sort()
> end_lis.sort()
> for k in start_lis:
>      for i in end_lis
>                print k , i , probe_id(this doesnot worK)
>       result = start#end#probe_id ------->this doesnot work...
>         print result
>  
> What is the error and how do is sort a file based on the two column  to
> get the fourth column also with that.
> regards
> shafreen
> 

Don't know if this is what you are looking for :

dataList = []

for line in open('chromosome_location_346010.bed','r') :
    data = line.strip().split('\t')
    start = data[1].strip()
    end = data[2].strip()
    probe_id  = data[3].strip()
    dataList.append((start, end, probe_id))

dataList.sort(key=lambda x: x[1].rjust(20) + x[2].rjust(20))

for item in dataList:
    print 'Start :', item[0].rjust(11) \
          , '  - End :', item[1].rjust(11) \
          , '  - Probe :', item[2]




From martin at marcher.name  Fri Oct 26 13:07:42 2007
From: martin at marcher.name (Martin Marcher)
Date: Fri, 26 Oct 2007 19:07:42 +0200
Subject: "Standard" Full Text Search Engine
In-Reply-To: <1193412017.774014.116860@y42g2000hsy.googlegroups.com>
References: <mailman.475.1193402986.13605.python-list@python.org>
	<5oe6b7FmabnbU1@mid.uni-berlin.de>
	<1193412017.774014.116860@y42g2000hsy.googlegroups.com>
Message-ID: <5fa6c12e0710261007h3e0e57b3t5fa603b2945d1fd@mail.gmail.com>

2007/10/26, aaron.watters at gmail.com <aaron.watters at gmail.com>:
> On Oct 26, 8:53 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > Martin Marcher wrote:
> Thanks for the NUCULAR mention (http://nucular.sourceforge.net).  It
> certainly doesn't meet all the requirements requested (very few users
> yet, some features missing).  Please give it a look, however.  It's easy to use
> and fast.  How fast it is compared to others I can't say, especially
> since some of the numbers I see quoted out there are really incredible (how
> can an indexer by faster than "cp"?) -- I suspect some sort of
> trickery,
> frankly.

For starters I think I will go with nucular. It seems good enough,
lightweight and easy to use.

> Anyway, if you want a feature like proximity searching or
> some sort of internationalization support (it works with unicode, but
> that's probably not enough), please let me know.  I focused on
> the core indexing and retrieval functionality, and I think a lot of
> additional features can be added easily.

I don't know much about the internals of search engines but I'll
probably report back with a few suggestions after some time of usage
:)


-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From steve at holdenweb.com  Thu Oct 18 09:53:47 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 18 Oct 2007 09:53:47 -0400
Subject: Version specific or not?
In-Reply-To: <13gr6kqsdlue6db@corp.supernews.com>
References: <mailman.27.1192027753.927.python-list@python.org>
	<13gr6kqsdlue6db@corp.supernews.com>
Message-ID: <ff7ohc$fi8$1@ger.gmane.org>

Scott David Daniels wrote:
> Steven W. Orr wrote:
>> We have an app and I'm trying to decide where the app ... .
>> /usr/lib/python2.3/site-packages
>> or
>> /usr/lib/site-python
>>
>> The latter would solve a lot of problems for me.
> Fewer than you suspect
> 
>> If there are multiple versions of python installed on the same machine, 
>> having a shebang that just looked for /usr/bin/python would make my life 
>> a lot easier.
> 
>> * Since we distribute .pyo files, is there an issue if the .pyo was 
>> built with 2.3.5 and then executed by 2.4 or 2.5?
> 
> Each python M.N.X has its own byte code for distinct values of M and/or N.
> So, if you had a shared directory, not only would your users have to
> be able to write to the shared directory (when they import mumble, and
> mumble.pyc or mumble.pyo has been generated by a different version of
> Python, they will recompile mumble.py and rewrite mumble.pyc (or .pyo).
> 
If the users *don't* have write access to the directory then no 
byte-code is stored, and everything has to compile the libraries each 
time. So it isn't necessary to have write, but either way sharing 
libraries between versions is a pain for the reason you state.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Oct  5 06:43:17 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 05 Oct 2007 12:43:17 +0200
Subject: WebBased Vector 2D Graphics
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
Message-ID: <5mmiq5Fe2nnuU1@mid.individual.net>

 cjt22 at bath.ac.uk wrote:

> Is there any way this web programming can be done in python. 

Sure. Minimalistic approaches include using CGI
(http://docs.python.org/lib/module-cgi.html)
or using Apache with mod_python directly. There are also web
frameworks for Python, but I don't know much about them.

> As mentioned previously, I have never done any web based
> development so don't really know what I'm talking about when
> trying to understand how I can go from this Python program output
> to producing some graphical output on a web page.

The above approaches allow you to directly print to the web page.
I'm not sure how you could display constant progress there. Perhaps
much simpler with mod_python than with CGI. 
 
Regards,


Bj?rn

-- 
BOFH excuse #369:

Virus transmitted from computer to sysadmins.



From mpelzsherman at yahoo.com  Tue Oct 23 19:50:55 2007
From: mpelzsherman at yahoo.com (Michael Pelz Sherman)
Date: Tue, 23 Oct 2007 16:50:55 -0700 (PDT)
Subject: escape single and double quotes
Message-ID: <721250.75471.qm@web55313.mail.re4.yahoo.com>


Leif B. Kristensen wrote:

>>> You don't need to escape text when using the Python DB-API.
>>> DB-API will do everything for you.
>>> For example:
>>>  SQL = 'INSERT into TEMP data = %s'
>>>  c.execute(SQL, """ text containing ' and ` and all other stuff we
>>.  might
>>.   read from the network""")
>>. 
>>> You see, the SQL string contains a %s placeholder, but insetad of
>>> executing the simple string expansion SQL % """....""", I call the
>>> execute method with the text as a second *parametar*. Everything else
>>> is magic :).
> 
>> Sure, but does this work if you need more than one placeholder?

> Yes it works with more than one placeholder.

Yes, BUT: I have found that all of the placeholders must be STRINGS!

If I try to use other data types (%d, %f, etc.), I get an error:

File "/usr/lib/python2.5/site-packages/MySQLdb/cursors.py", line 149, in execute
    query = query % db.literal(args)
TypeError: float argument required

It's not a huge problem to convert my non-string args, but it
seems like this should be fixed if it's a bug, no?

- Michael
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/a11b8e43/attachment.html>

From stargaming at gmail.com  Sat Oct 20 01:58:38 2007
From: stargaming at gmail.com (Stargaming)
Date: 20 Oct 2007 05:58:38 GMT
Subject: class vs type
References: <mailman.208.1192798489.13605.python-list@python.org>
	<87wstjtfip.fsf@mulj.homelinux.net>
	<mailman.219.1192810911.13605.python-list@python.org>
Message-ID: <4719990e$0$18188$9b622d9e@news.freenet.de>

On Fri, 19 Oct 2007 12:21:25 -0400, Colin J. Williams wrote:

> Hrvoje Niksic wrote:
>> "Colin J. Williams" <cjw at sympatico.ca> writes:
>> 
>>> In Python Types and Objects, Shalabh Chaturvedi says (in the Python
>>> 3.0 documentation - New Style Classes)
>>>
>>> "The term class is traditionally used to imply an object created by
>>> the class statement. However, classes are now synonymous with types.
>>> Built-in types are usually not referred to as classes. This book
>>> prefers using the term type for both built-in and user created types."
>>>
>>> Do we need two different words to describe what is essentially the
>>> same thing?
>> 
>> We don't, not anymore, which is why the author chooses the word "type"
>> for both in the last sentence.
> In this case, why do we continue to use the word class to generate a
> type?
[snip]
> Doesn't Python 3 provide an opportunity to move away from discussions
> about new_style vs old-style?  This an opportunity to treat old-style
> as a historical artefact, not requiring current explanation.


So, do we have to decide between 'instance' and 'object' as well?

Old-style classes *are* deprecated in favor of new-style classes 
(whoops!) but the term 'class' is still valid (IMO). It's a common phrase 
in the OO-world and removing it from a Python programmer's vocabulary 
(what essentially wouldn't work so well, I suspect) won't help.

If you're speaking about just the syntax, well okay, this could be 
sensible in some unification-focussed vocabulary-minimalistic manner. But 
combining the class _statement_ and the type _expression_ would 
essentially change class definitions into expressions.

Cheers,
Stargaming


From horpner at yahoo.com  Tue Oct  2 07:42:09 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Tue, 02 Oct 2007 11:42:09 GMT
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
	<1191272365.225974.41660@w3g2000hsg.googlegroups.com>
Message-ID: <slrnfg4bro.28k.horpner@FIAD06.norwich.edu>

On 2007-10-01, Arnaud Delobelle <arnodel at googlemail.com> wrote:
> On Oct 1, 6:26 pm, Neil Cerutti <horp... at yahoo.com> wrote:
>> On 2007-10-01, Arnaud Delobelle <arno... at googlemail.com> wrote:
>>
>> > Finally, arithmetic would become very confusing if there were
>> > three distinct numeric types; it already causes enough
>> > confusion with two!
>>
>> Scheme says: It's not that bad.
>
> Scheme has prefix numeric operators, so that 1/2 is
> unambiguously (for the interpreter and the user) a litteral for
> 'the fraction 1/2'. You can't avoid the confusion in python, as
> binary operators are infix. Of course, we could create a new
> kind of litteral.  Let's see, / and // are already operators,
> so why not use /// ? ;)

But you wouldn't actually need a literal rational represention.

But I'm just playing Devil's Advocate here; I like rationals in
Scheme and Lisp, but I don't see a need for them in Python.

On the other hand, Python has had complex numbers a long time,
and it doesn't need those more than rationals, does it? My guess
is that it got complex numbers but not rationals because
rationals just aren't very efficient.

But as a programmer, I'm mostly just a data-twiddler, and don't
generally need either of those numeric type in my day-to-day
work. So I'm not the guy to ask. ;)

-- 
Neil Cerutti
I'm tired of hearing about money, money, money, money, money. I just want to
play the game, drink Pepsi, wear Reebok. --Shaquille O'Neal


From lmierzej at o2.pl  Sun Oct 14 18:36:07 2007
From: lmierzej at o2.pl (Lukasz Mierzejewski)
Date: Sun, 14 Oct 2007 22:36:07 +0000 (UTC)
Subject: pydev code completion problem
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
	<1192394167.058669.117830@q5g2000prf.googlegroups.com>
	<feu3bo$8hs$2@nemesis.news.tpi.pl> <5nfhr6FhrkupU1@mid.uni-berlin.de>
Message-ID: <feu5kn$edj$2@nemesis.news.tpi.pl>

> He is right. What would you expect from this piece of code:
> 
> 
> foo = random.choose([A(), B(), C(), ..., Z()])

Thank you all for dispelling my stupid doubts!

> What PyDev does is to implement some heuristics that can guess easy 
> cases - as you saw for yourself. But there is a limit to what can be 
> done. Instead, it might even introduce errors.

I have just checked WingIDE and Komodo IDE and those PyDev heuristics do
much better work then code completion solutions in WingIDE and Komodo...


From deets at nospam.web.de  Wed Oct 10 02:09:40 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 10 Oct 2007 08:09:40 +0200
Subject: Unexpected behaviour with HTMLParser...
In-Reply-To: <S%SOi.92740$TR1.33185@fe06.news.easynews.com>
References: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
	<5n2avjFfh6h8U1@mid.uni-berlin.de>
	<S%SOi.92740$TR1.33185@fe06.news.easynews.com>
Message-ID: <5n38l7Fg00gvU1@mid.uni-berlin.de>

Just Another Victim of the Ambient Morality schrieb:
> "Diez B. Roggisch" <deets at nospam.web.de> wrote in message 
> news:5n2avjFfh6h8U1 at mid.uni-berlin.de...
>> Just Another Victim of the Ambient Morality schrieb:
>>>     HTMLParser is behaving in, what I find to be, strange ways and I 
>>> would like to better understand what it is doing and why.
>>>
>>>     First, it doesn't appear to translate HTML escape characters.  I 
>>> don't know the actual terminology but things like &amp; don't get 
>>> translated into & as one would like.  Furthermore, not only does 
>>> HTMLParser not translate it properly, it seems to omit it altogether! 
>>> This prevents me from even doing the translation myself, so I can't even 
>>> working around the issue.
>>>     Why is it doing this?  Is there some mode I need to set?  Can anyone 
>>> else duplicate this behaviour?  Is it a bug?
>> Without code, that's hard to determine. But you are aware of e.g.
>>
>> handle_entityref(name)
>> handle_charref(ref)
>>
>> ?
> 
>     Actually, I am not aware of these methods but I will certainly look into 
> them!
>     I was hoping that the issue would be known or simple before I commited 
> to posting code, something that is, to my chagrin, not easily done with my 
> news client...
> 
> 
>>>     Secondly, HTMLParser often calls handle_data() consecutively, without 
>>> any calls to handle_starttag() in between.  I did not expect this.  In 
>>> HTML, you either have text or you have tags.  Why split up my text into 
>>> successive handle_data() calls?  This makes no sense to me.  At the very 
>>> least, it does this in response to text with &amp; like escape sequences 
>>> (or whatever they're called), so that it may successively avoid those 
>>> translations.
>> That's the way XML/HTML is defined - there is no guarantee that you get 
>> text as whole. If you must, you can collect the snippets yourself, and on 
>> the next end-tag deliver them as whole.
> 
>     I think there's some miscommunication, here.
>     You can't mean "That's the way XML/HTML is defined" because those format 
> specifications say nothing about how the format must be parsed.  As far as I 
> can tell, you either meant to say that that's the way HTMLParser is 
> specified or you're referring to how text in XML/HTML can be broken up by 
> tags, in which case I've already addressed that in my post.  I expected to 
> see handle_starttag() calls in between calls to handle_data().
>     Unless I'm missing something, it simply makes no sense to break up 
> contiguous text into multiple handle_data() calls...


I meant that's the way XML/HTML-parsing is defined, yes.

>>>     Again, why is it doing this?  Is there some mode I need to set?  Can 
>>> anyone else duplicate this behaviour?  Is it a bug?
>> No. It's the way it is, because it would require buffering with unlimited 
>> capacity to ensure this property.
> 
>     It depends on what you mean by "unlimited capacity."  Is it so bad to 
> buffer with as much memory as you have? ...or, at least, have a setting for 
> such operation?  Moreover, you know that you'll never have to buffer more 
> than there is HTML, so you hardly need "unlimited capacity..."  For 
> instance, I believe Xerces does this translation for you 'cause, really, why 
> wouldn't you want it to?

I've been dealing with XML-files that are several gigbytes of size and 
never fit into physical memory. So buffering would severely impact the 
whole system if it was the default of the parser.

And you are wrong - xerces (the SAX-parser, which is the equivalent to 
HTMLParser) explicitly does not do that. It is not guaranteed that the 
character-data is passed in one chunk.

DOM is an etirely different subject, it _has_ to be fully parsed. But 
then, it's often problematic because of that.

>>>     These are serious problems for me and I would greatly appreciate a 
>>> deeper understanding of these issues.
>> HTH, and read the docs.
> 
>     This does help, thank you.  I have obviously read the docs, since I can 
> use HTMLParser enough to find this behaviour.  I don't find the docs to be 
> very explanatory (perhaps I'm reading the wrong docs) and I think they 
> assume you already know a lot about HTML and parsing, which may be necessary 
> assumptions but are not necessarily true...

Well, you at least overlooked the methods I mentioned.

Diez



From larry.bates at websafe.com  Fri Oct 12 16:54:47 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 12 Oct 2007 15:54:47 -0500
Subject: Problem with global
In-Reply-To: <feoflr$cgs$01$1@news.t-online.com>
References: <feoflr$cgs$01$1@news.t-online.com>
Message-ID: <z6idnU4_zZGoQpLanZ2dnUVZ_qXinZ2d@comcast.com>

Florian Lindner wrote:
> Hello,
> I have a little problem with the global statement.
> 
> def executeSQL(sql, *args):
>     try:
>         import pdb; pdb.set_trace()
>         cursor = db.cursor()  # db is <type 'NoneType'>.
>         [...]
>     except:
>         print "Problem contacting MySQL database. Please contact root."
>         sys.exit(-1) 
> 
> 
> db  = None # Global Variable for DB connection
>     
> def main():
>     [...]    
>     global db
>     db = MySQLdb.connect(...)
>     [...]
>     executeSQL(sql, args)
> 
> 
> Why isn't the global variable db not written in main() to be a mysql
> connection and still none type in executeSQL?
> 
> Thanks,
> 
> Florian

Because you have it to let executeSQL know that it is global or it creates a 
local copy in local namespace.

def executeSQL(sql, *args):
     global db
     try:
         import pdb; pdb.set_trace()
         cursor = db.cursor()  # db is <type 'NoneType'>.
         [...]
     except:
         print "Problem contacting MySQL database. Please contact root."
         sys.exit(-1)

-Larry


From chris.monsanto at gmail.com  Wed Oct 10 18:23:49 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Wed, 10 Oct 2007 15:23:49 -0700
Subject: if then elif
In-Reply-To: <Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>
References: <mailman.42.1192048768.927.python-list@python.org>
	<Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>
Message-ID: <1192055029.856930.19230@r29g2000hsg.googlegroups.com>

On Oct 10, 5:03 pm, Larry Bates <larry.ba... at websafe.com> wrote:
> Shawn Minisall wrote:
> > I just learned about if, then elif statements and wrote this program.
> > The problem is, it's displaying all of the possibilities even after you
> > enter a 0, or if the fat grams are more then the total number of
> > calories , that is supposed to stop the program instead of continuing on
> > with the print statements that don't apply.  Any idea's?  thanks
>
> >    #Prompt for calories
> >    cal = input("Please enter the number of calories in your food: ")
>
> >    #Prompt for fat
> >    fat = input("Please enter the number of fat grams in your food: ")
>
> >    #Input validation
> >    if cal or fat <= 0:
> >       #Display message
> >        print "Error.  The number of calories and/or fat grams must be
> > positive"
> >        print
>
> >    else:
> >    #Calculate calories from fat
> >        calfat = float(fat) * 9
> >          #Calculate number of calories from fat
> >        caldel = calfat / cal
>
> >    #change calcent decimal to percentage
> >        calcent = caldel * 100
>
> >    if calfat > cal:
> >        print "The calories or fat grams were incorrectly entered."
>
> >    else:
> >    #evaluate input
> >        if caldel <= .3:
> >            print "Your food is low in fat."
> >        elif caldel >= .3:
> >            print "Your food is high in fat."
>
> >    #Display percentage of calories from fat
> >        print "The percentage of calories from fat in your food is %",
> > calcent
>
> > Here's an example of the output...
>
> > Please enter the number of calories in your food: 50
> > Please enter the number of fat grams in your food: 30
> > Error.  The number of calories and/or fat grams must be positive
>
> > Your food is low in fat.
> > The percentage of calories from fat in your food is % 0.0
>
> > It was supposed to print The calories or fat grams were incorrectly
> > entered since the calories from fat was greater then the total number of
> > calories.
>
> Boolean problem:
>
> if cal or fat <= 0
>
> That may be the way you say it or "think" it but it won't work.
>
> 'cal or fat' is evaluated first.  Since they both have values this ALWAYS
> evaluates to 1 which is NEVER less than or equal to 0.
>
> You are looking for
>
> if (cal <= 0) or (fat <=0):
>
> (Note: Parenthesis not required, but it may help you understand precedence of
> evaluation.  Also read here:
>
> http://www.ibiblio.org/g2swap/byteofpython/read/operator-precedence.html
>
> -Larry

that's the most incorrect thing i've heard all day!

if cal or fat <= 0 is parsed as if (cal) or (fat <= 0)



From johnmasters at oxtedonline.net  Thu Oct  4 16:50:50 2007
From: johnmasters at oxtedonline.net (John Masters)
Date: Thu, 4 Oct 2007 20:50:50 +0000
Subject: RegEx question
In-Reply-To: <496954360710041325p3a305144i6a843a25e8332f45@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
	<50af02ed0710041248i15823f88gd6b404353ba7d472@mail.gmail.com>
	<47054785.5020705@tim.thechases.com>
	<47054853.1050301@tim.thechases.com>
	<496954360710041325p3a305144i6a843a25e8332f45@mail.gmail.com>
Message-ID: <20071004205050.GA14451@oxtedonline.net>

On 15:25 Thu 04 Oct     , Robert Dailey wrote:
> I am not a regex expert, I simply assumed regex was standardized to follow
> specific guidelines.

There are as many different regex flavours as there are Linux distros.
Each follows the basic rules but implements them slightly differently
and adds their own 'extensions'. 

> I also made the assumption that this was a good place
> to pose the question since regular expressions are a feature of Python.

The best place to pose a regex question is in the sphere of usage, i.e.
Perl regexes differ hugely in implementation from OO langs like Python
or Java, while shells like bash or zsh use regexes slightly differently,
as do shell scripting languages like awk or sed. 

> The question concerned regular expressions in general, not really the
> application. However, now that I know that regex can be different, I'll try
> to contact the author directly to find out the dialect and then find the
> appropriate location for my question from there. I do appreciate everyone's
> help. I've tried the various suggestions offered here, however none of them
> work. I can only assume at this point that this regex is drastically
> different or the application reading the regex is just broken.

If you care to PM me with details of the language/context I will try to
help but I am no expert.

Regards, John


From JohnRoth1 at jhrothjr.com  Sun Oct 28 20:38:01 2007
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: Sun, 28 Oct 2007 17:38:01 -0700
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
In-Reply-To: <87bqaihmq7.fsf@benfinney.id.au>
References: <87bqaihmq7.fsf@benfinney.id.au>
Message-ID: <1193618281.869316.39540@v3g2000hsg.googlegroups.com>

On Oct 28, 4:56 pm, Ben Finney <b... at benfinney.id.au> wrote:
> Howdy all,
>
> Ned Batchelder has been maintaining the nice simple tool 'coverage.py'
> <URL:http://nedbatchelder.com/code/modules/coverage.html> for
> measuring unit test coverage.
>
> On the same site, Ned includes documentation
> <URL:http://nedbatchelder.com/code/modules/rees-coverage.html> by the
> previous author, Gareth Rees, who says in the "Limitations" section:
>
>     Statement coverage is the weakest measure of code coverage. It
>     can't tell you when an if statement is missing an else clause
>     ("branch coverage"); when a condition is only tested in one
>     direction ("condition coverage"); when a loop is always taken and
>     never skipped ("loop coverage"); and so on. See [Kaner 2000-10-17]
>     <URL:http://www.kaner.com/pnsqc.html> for a summary of test
>     coverage measures.
>
> So, measuring "coverage of executed statements" reports complete
> coverage incorrectly for an inline branch like 'foo if bar else baz',
> or a 'while' statement, or a 'lambda' statement. The coverage is
> reported complete if these statements are executed at all, but no
> check is done for the 'else' clause, or the "no iterations" case, or
> the actual code inside the lambda expression.
>
> What approach could we take to improve 'coverage.py' such that it
> *can* instrument and report on all branches within the written code
> module, including those hidden inside multi-part statements?
>
> --
>  \            "Technology is neither good nor bad; nor is it neutral." |
>   `\                       -Melvin Kranzberg's First Law of Technology |
> _o__)                                                                  |
> Ben Finney

Well, having used it for Python FIT, I've looked at some if its
deficiencies. Not enough to do anything about it (although I did
submit a patch to a different coverage tool), but enough to come to a
few conclusions.

There are two primary limitations: first, it runs off of the debug or
trace hooks in the Python kernel, and second, it's got lots of little
problems due to inconsistencies in the way the compiler tools generate
parse trees.

It's not like there are a huge number of ways to do coverage. At the
low end you just count the number of times you hit a specific point,
and then analyze that.

At the high end, you write a trace to disk, and analyze that.

Likewise, on the low end you take advantage of existing hooks, like
Python's debug and trace hooks, on the high end you instrument the
program yourself, either by rewriting it to put trace or count
statements everywhere, or by modifying the bytecode to do the same
thing.

If I was going to do it, I'd start by recognizing that Python doesn't
have hooks where I need them, and it doesn't have a byte code
dedicated to a debugging hook (I think). In other words, the current
coverage.py tool is getting the most out of the available hooks: the
ones we really need just aren't there.

I'd probably opt to rewrite the programs (automatically, of course) to
add instrumentation statements. Then I could wallow in data to my
heart's content.

One last little snark: how many of us keep our statement coverage
above 95%? Statement coverage may be the weakest form of coverage, but
it's also the simplest to handle.

John Roth



From bj_666 at gmx.net  Fri Oct  5 11:54:15 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 5 Oct 2007 15:54:15 GMT
Subject: remove list elements..
References: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
	<1191595624.946031.279190@k79g2000hse.googlegroups.com>
	<mailman.1589.1191599263.2658.python-list@python.org>
Message-ID: <5mn517Fe9gesU2@mid.uni-berlin.de>

On Fri, 05 Oct 2007 11:45:07 -0400, Steve Holden wrote:

> chris.monsanto at gmail.com wrote:
>> On Oct 5, 10:27 am, Abandoned <best... at gmail.com> wrote:
>>> Hi..
>>> I have a problem..
>>> list1=[11, 223, 334, 4223...] 1 million element
>>> list2=[22,223,4223,2355...] 500.000 element
>>>
>>> I want to difference list1 to list2 but order very importent..
>>>
>>> My result must be:
>>> list3=[11,334,...]
>>>
>>> I do this use FOR easly but the speed very imported for me. I want to
>>> the fastest method please help me.
>> 
>> Research the "set" data type. :)
>> 
> Probably not a very helpful suggestion given that ordering is stated to 
> be very important.

A `set()` can be part of such a solution.

Ciao,
	Marc 'BlackJack' Rintsch


From svangati at gmail.com  Wed Oct 24 14:42:06 2007
From: svangati at gmail.com (Vangati)
Date: Wed, 24 Oct 2007 11:42:06 -0700
Subject: Mobile Startup looking for sharp coders
Message-ID: <1193251326.812853.301100@q3g2000prf.googlegroups.com>

Plusmo is Hiring!

Plusmo's mission is to provide the ultimate mobile experience for
users by bringing together advanced technologies and easy to use
services for mobile phones. Plusmo's innovative widget service lets
users run cool "widgets" on their mobile phones. There are over 20,000
widgets and mobile mash-ups on Plusmo, most of them created and shared
by end users and publishers with no coding knowledge.

Join us in tackling the challenges of a rapidly growing service with
millions of mobile page views. Plusmo's founding team has a successful
track record with two mobile startups and extensive experience working
with mobile web standards.  Plusmo is well-funded and looking for
sharp coders and smart business minds to expand our team. If you want
to join a small company trying to change the world, then this is the
place for you!

Top 5 reasons to join Plusmo -
1.	You wanted a specific service for your mobile phone but it is not
available out there.
         Why not write it and get paid for it?
2.	You think small screen is not a challenge but an opportunity if
used correctly
3.	You want to define the next generation mobile web standards
4.	You get a kick out of building cool web and mobile mash-ups
overnight
5.	You constantly experience that nagging feeling that your phone is
under-utilized

Plusmo is based in Santa Clara, California and is looking to fill
these full-time positions immediately. You must be a legal US resident
and be based in the San Francisco Bay Area to apply.

Senior Mobile Developers: Several Positions Available. You must be an
experienced developer with deep hands-on working knowledge on these
mobile technologies: Symbian, Windows Mobile, BREW, J2ME, Blackberry,
Mobile Linux and Flash, mobile browsers and standards.

User Experience Designer - Define the next generation visual design,
Interaction design, experience with web and mobile widgets, Flash user
interfaces.

Senior Flash Developer: Design and build several web and mobile
widgets for Plusmo. Build data driven applications using Flash, Flex
and Actionscript.

Senior Web Developer - Web-site front-end development using CSS, HTML
and Javascript.  Must know XMLHTTP, Cross-browser compatibility
issues.

Send your resume to jobs at plusmo.com

Recruiting Agencies: Please do not send us unsolicited resumes. Plusmo
does not consider resumes from any agencies. We are not responsible
for any charges from agencies.



From python at rcn.com  Thu Oct 25 20:33:53 2007
From: python at rcn.com (Raymond Hettinger)
Date: Thu, 25 Oct 2007 17:33:53 -0700
Subject: An efficient, pythonic way to calculate result sets
In-Reply-To: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
References: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
Message-ID: <1193358833.133666.253680@k35g2000prh.googlegroups.com>

On Oct 25, 8:31 am, happyhon... at gmail.com wrote:
> I've got a little issue, both programming and performance-wise. I have
> a set, containing objects that refer to other sets. For example, in a
> simple notation: (<a, b, c>, <d, e>) (or in a more object-like
> display: set(obj1.choices=set(a, b, c) ). There may be obj1..objN
> objects in the outer set, and the amount of items in the choices sets
> could also reach a high number. The objects in the choices sets might
> overlap.
>
> Now I want to have all possible combinations, like this: (a, d), (b,
> d), (c, d), (a, e), (b, e), (c, e).
>
> However, I've got a few catches that make an already (icky) recursive
> function worse to use.
>
> First of all, I want to be able to only choose things so that the
> outer 'result sets' have the same length. For example, if you'd have
> (<a, b>, <a, c>), you might pick (a, a) with a simple algorythm, the
> basic behaviour of sets reducing it to (a) and thus having an improper
> length. I could add yet another loop after calculating everything to
> throw out any result sets with the improper length, but that would be
> highly inefficient.
>
> Second, I'd hope to be able to say that objX should be assumed to have
> made the choice z. In the first example I mentioned, if I said that
> 'obj1 == a', the only result sets that would come out would be (a, d)
> and (a, e).

def cross_nodups(*args):
    'Cross product after eliminating repeat elements, keeping constant
size'
    ans = [[]]
    for arg in args:
        ans = [x+[y] for x in ans for y in arg if y not in x]
    return ans

def choose_first(obj1, *args):
    'Assume a choice of a first object'
    return cross_nodups(obj1, *args[1:])


>>> print cross_nodups('ab', 'acd', 'fg')
[['a', 'c', 'f'], ['a', 'c', 'g'], ['a', 'd', 'f'], ['a', 'd', 'g'],
['b', 'a', 'f'], ['b', 'a', 'g'], ['b', 'c', 'f'], ['b', 'c', 'g'],
['b', 'd', 'f'], ['b', 'd', 'g']]

>>> print choose_first('a', s1,s2,s3)
[['a', 'c', 'f'], ['a', 'c', 'g'], ['a', 'd', 'f'], ['a', 'd', 'g']]



> (and hopefully not rely on
> recursion

Easy exercise of transforming recursion to iteration left to the
reader.


Raymond



From scripteaze at gmail.com  Wed Oct 24 11:55:33 2007
From: scripteaze at gmail.com (scripteaze at gmail.com)
Date: Wed, 24 Oct 2007 15:55:33 -0000
Subject: basic web auth and verification
In-Reply-To: <471da78f@news.arcor-ip.de>
References: <1193116441.563894.218650@v23g2000prn.googlegroups.com>
	<471da78f@news.arcor-ip.de>
Message-ID: <1193241333.923496.304790@k35g2000prh.googlegroups.com>

On Oct 23, 12:55 am, Ralf Sch?nian <r... at schoenian-online.de> wrote:
> scripte... at gmail.com schrieb:
>
>
>
>
>
> > Trying to figure out how to add login verfication. I believe it is
> > logging me in, but theres no way to really tell..any ideas? or
> > tutorials out there that can exaplain this to me?
>
> > Thanks
>
> > import urllib,urllib2,cookielib
>
> > passlst = open(passfile, 'r').readlines()
> > url="http://somesite"
> > cj = cookielib.LWPCookieJar()
> > opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
> > urllib2.install_opener(opener)
> > TheForm = urllib.urlencode({"username":"myid","password":"mypas"})
> > request = urllib2.Request(url, TheForm)
> > result = urllib2.urlopen(request)
> > html=result.read()
> > result.close()
>
> I had the same trouble. There was a redirect after login a had to
> follow. Look at the following code.
>
>      def login(self):
>          ''' Log into web site. '''
>
>          self._br.set_handle_redirect(True)
>          cj = CookieJar()
>          self._br.set_cookiejar(cj)
>          self._br.open(Config.urlLogin)
>          self._br.select_form(name='login')
>
>          self._br['session_key'] = Config.username
>          self._br['session_password'] = Config.password
>          response=self._br.submit()
>          self._br.set_response(response)
>          for link in self._br.links(url_regex="www.somesite.com"):
>              self._br.follow_link(link)
>          if 'Sign In' in self._br.title():
>              raise ValueError('Wrong password')
>
> Regards,
> Ralf Schoenian- Hide quoted text -
>
> - Show quoted text -

Thank you very much, ill look into it..



From gherzig at fmed.uba.ar  Wed Oct 10 11:31:21 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Wed, 10 Oct 2007 12:31:21 -0300
Subject: multimethods decorator
Message-ID: <470CF049.60303@fmed.uba.ar>

Hi all. Im reading the Gido's aproach using decorators at
http://www.artima.com/weblogs/viewpost.jsp?thread=101605

It looks good to me, but the examples shows the functionality using 
functions.
Now, when i try to give this decorator into a method, if i try the

class test(object):
    @multimethod(...)
    def met(self, ...):

The multimethod decorator needs the types of the arguments, and, if the 
met method requires self as the first argument, the multimethod should 
look like
@multimethod(self.__class__, bla, ble) or some like that...

Now i know that im wrong, because i have this error
 >@multimethod(self.__class__)
 >NameError: name 'self' is not defined

So what would be the first argument to @multimethod??

Thanks!!
Gerardo




From mensanator at aol.com  Sun Oct 28 15:15:08 2007
From: mensanator at aol.com (mensanator@aol.compost)
Date: Sun, 28 Oct 2007 12:15:08 -0700
Subject: Pari Python
In-Reply-To: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
Message-ID: <1193598908.230475.204810@57g2000hsv.googlegroups.com>

On Oct 28, 12:45 pm, Anton Mellit <mel... at gmail.com> wrote:
> Hi,
>
> I am working on a Pari-Python module (see about GP/PARI athttp://pari.math.u-bordeaux.fr/). Similar project was started by
> Stefane Fermigier 12 years ago (you can find a post about it on this
> newsgroup). You can see some screenshots on my blog (http://
> mellit.wordpress.com/2007/10/28/pari-python/). I reproduce the text on
> my blog here.

Cool.

>
> I finished some working version of the pari-python module. I tried to
> make it is close as possible to the standard PARI shell, at the same
> time using the standard python syntax.

Does your version use the GMP library (optional in PARI).
Does it support Windows? I couldn't tell if the PARI
Windows distribution has GMP, but I suspect not since GMP
doesn't support Windows.

> Here I put some screenshots. I
> didn't make a proper package distribution for python (the code still
> looks ugly and I still don't know how to make proper distributions),
> but if someone is interested to test it send me an email. This is in
> early alpha stage. A lot of things are not working. I imported almost
> all functions of gp by an automated perl script but I don't know which
> of them actually work and which not.
>
> There are two special difficulties you may notice about python. The
> first one is the power operation. In python it is '**', whereas '^' is
> reserved for the bitwise xor. I made some little changes to the python
> source so that '^' and '^=' now work as power, and '^^' and '^^=' work
> as xor if you still want to use it.

Oh, dear.

> This is done by modifying about 30
> lines of source code in several files: Include/token.h, Modules/
> parsermodule.c, Parser/tokenizer.c, Python/ast.c, Grammar/Grammar.

Am I gonna have to re-compile Python?

That's imposible for ordinary Windows users.

Are you going to make a binary Windows distribution?

If not, it may as well be on the far side of the moon for
all the good it would be to me.

>
> The second difficulty is that expressions like '1/2 produce 0 in
> python. For this my module installs my own handler for the operation
> 'divide' for integers and longs. That's it. In other respects it is a
> normal python module.
>
> I will greatly appreciate any feedback.
>
> Anton




From robert.kern at gmail.com  Mon Oct  1 15:00:41 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 01 Oct 2007 14:00:41 -0500
Subject: how to install numpy and scipy on debian?
In-Reply-To: <BLU107-W11411910BF255931124BE2B4AD0@phx.gbl>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>	<4700fb42$0$18288$426a74cc@news.free.fr>	<mailman.1337.1191248052.2658.python-list@python.org>	<47010e97$0$7777$426a74cc@news.free.fr>	<1191258548.820547.123560@k79g2000hse.googlegroups.com>	<1191258828.206660.21570@22g2000hsm.googlegroups.com>
	<1191259303.3393.49.camel@dot.uniqsys.com>
	<BLU107-W11411910BF255931124BE2B4AD0@phx.gbl>
Message-ID: <fdrg4t$dfg$1@sea.gmane.org>

wang frank wrote:
> 
> Hi,
>  
> I need to help to install these two packages on debian. I want to know
> what packages do I need to? I have installed fftw3,fftww2, sfftw2,
> atlas. Did I miss anything? In what way I can install an optimized numpy
> and scipy, since my project is very big and speed is important.

Be sure to install the -dev packages for each of the above as well as
python-dev. You will probably also want to install the CPU-specific versions of
ATLAS, too (like atlas3-sse2). If you *really* need speed, I recommend building
a more recent release of ATLAS yourself especially if you have a CPU released in
the last couple of years. The 3.7 series has seen a lot of improvements over the
3.6 released in Debian.

If you can live with the packaged versions of ATLAS and FFTW, then you might
also be able to live with the packaged python-numpy and python-scipy. They are
somewhat older than the current release, but that shouldn't be too bad.

If you want to build numpy and scipy yourself and you need more specific help,
please join us on scipy-user with your questions.

  http://www.scipy.org/Mailing_Lists

-- 
Robert Kern

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



From cokofreedom at gmail.com  Tue Oct 23 04:21:05 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Tue, 23 Oct 2007 08:21:05 -0000
Subject: Anagrams
Message-ID: <1193127665.868582.257380@z24g2000prh.googlegroups.com>

This was from a random website I found on practising good programming
techniques and I thought I'd see what ways people could find to write
out this example. Below are my two examples (which should work...).

I am merely interested in other techniques people have (without
resorting to overusage of C modules and such like), just python and
good computer science techniques.

For the wordlist go to this link <a href="http://codekata.pragprog.com/
2007/01/kata_six_anagra.html">Kata Anagrams</a>
Anyway here are my two examples.

This one uses a dictionary to store prime values of each letter in the
alphabet and for each line multiple the results of the characters
(which is unique for each anagram) and add them to a dictionary for
printing latter.
<pre>
def anagram_finder():
    primeAlpha = {'a':2, 'b':3, 'c':5, 'd':7,'e' : 11, 'f':13, 'g':17,
'h':19,        \
                  'i':23, 'j':29, 'k':31, 'l':37, 'm':41, 'n':43, 'o':
47, 'p':53,    \
                  'q':59, 'r':61, 's':67, 't':71, 'u':73, 'v':79, 'w':
83, 'x':89,    \
                  'y':97, 'z':101}
    dictAna =  {}
    file = open ("wordlist.txt", "r")
    for line in file:
        value = 1
        for s in line:
            if s.lower() in primeAlpha:
    	           value *= primeAlpha[s.lower()]
        dictAna.setdefault(value, []).append(line.strip())
    file.close()
    print "\n".join(['Anagrams are: %s' % (v) for k, v in
dictAna.items() if len(dictAna[k]) > 1])
</pre>

My second is a little bit simpler. Each dictionary key is an
alphabetical ordering of the line in question, so that anagrams will
appear the same. It will add to the dictionary the new word either in
an existing key, or create a new one for it.

<pre>
def anagram_finder():
    dict = {}
    file = ('wordlist.txt', 'r')
    for line in file:
		strip_line = line.strip().lower()
		sort_line = str(sorted(strip_line))
		dict.setdefault(sort_line, []).append(strip_line)
    file.close()
    print '\n'.join(['Anagrams are: %s' % (v) for k, v in dict.items()
if len(dict[k]) > 1])
</pre>

Comparing them with timeit, they both took around 1 second or so, with
the first being slightly faster.

What other ways do people think will work (and do mine actually work
for other people!)



From jivelasquezt at gmail.com  Wed Oct 17 11:44:28 2007
From: jivelasquezt at gmail.com (jivelasquezt at gmail.com)
Date: Wed, 17 Oct 2007 08:44:28 -0700
Subject: linear programming in Python
Message-ID: <1192635868.971584.7000@k35g2000prh.googlegroups.com>

Hi all,

I'm new to this group so I don't know if this question has been posted
before, but does anyone knows about linear/integer programming
routines in Python that are available on the web, more specifically of
the branch and bound method.

Thanks,

Jorge Velasquez
PhD Student, Department of Ecology and Evolution at Stony Brook



From debajit1 at gmail.com  Wed Oct 17 19:55:53 2007
From: debajit1 at gmail.com (Debajit Adhikary)
Date: Wed, 17 Oct 2007 23:55:53 -0000
Subject: Best way to generate alternate toggling values in a loop?
Message-ID: <1192665353.008563.99280@y27g2000pre.googlegroups.com>

I'm writing this little Python program which will pull values from a
database and generate some XHTML.

I'm generating a <table> where I would like the alternate <tr>'s to be

<tr class="Even">
and
<tr class="Odd">

What is the best way to do this?

I wrote a little generator (code snippet follows). Is there a better
(more "Pythonic") way to do this?


# Start of Code

def evenOdd():
    values = ["Even", "Odd"]
    state = 0
    while True:
        yield values[state]
        state = (state + 1) % 2


# Snippet

    trClass = evenOdd()
    stringBuffer = cStringIO.StringIO()

    for id, name in result:
        stringBuffer.write('''
        <tr class="%s">
            <td>%d</td>
            <td>%s</td>
        </tr>
        '''
        %
        (trClass.next(), id, name))


# End of Code



From "atavory\" at (none)  Wed Oct 24 19:37:43 2007
From: "atavory\" at (none) (none)
Date: Thu, 25 Oct 2007 01:37:43 +0200
Subject: Python and Combinatorics
In-Reply-To: <1193267378.171825.233770@e34g2000pro.googlegroups.com>
References: <471fc476$1@news.bezeqint.net>
	<1193267378.171825.233770@e34g2000pro.googlegroups.com>
Message-ID: <471fd69c@news.bezeqint.net>

mensanator at aol.com wrote:
> On Oct 24, 5:20 pm, none <""atavory\"@(none)"> wrote:
>>         Hello,
>>
>>         Is there some package to calculate combinatorical stuff like (n over
>> k), i.e., n!/(k!(n - k!) ?
> 
> Sure, the gmpy module.
> 

Excellent, many thanks!


From klove at tax.ok.gov  Mon Oct  1 13:29:43 2007
From: klove at tax.ok.gov (Kenneth Love)
Date: Mon, 1 Oct 2007 12:29:43 -0500
Subject: Overriding Logging Config FileHandler Filename
Message-ID: <001d01c80450$a7b0b650$e6003dcc@worf2>

> On Sep 26, 1:07 am, "Vinay Sajip" <vinay_sajip at yahoo.co.uk> wrote:
>> On Sep 25, 9:15 pm, "Kenneth Love" <kl... at tax.ok.gov> wrote:
>> I have a Pythonloggingconfig file that contains a RotatingFileHandler
>> handler.  In the args key, I have hard-coded the log filename. 
>> Everything
>> works great.
>>
>> However, I find that I now need to override this filename at application
>> runtime.  Is there a good way to do this?
>>
>
> Are you using the original file name mentioned in the config file at
> all? Why and under what conditions do you need to switch? You could
> easily do this programmatically - have two handlers and when you need
> to, remove one from the logger and add the other. I see you are using
> a rotating handler, which itself does rollover to new log files every
> so often.
>
> Regards,
>
> Vinay Sajip


Sorry for the delay in my response.

This post is a little long.  Just bear with me and remember... You did
ask.  :-)

We want to move all of my logging, command line processing, and other 
generic
application initialization to a module (or set of modules) that can be used
in roughly 90% of our processing tasks. In other words, we are developing a
framework that is highly tailored to our needs.  We have most of what we 
need
already done.  Logging is one of the last steps to be completed because of
this issue.

One of the requirements for our processing is a log file name that is
specific to each task.  The format and behavior must be the same across all
tasks.  We determined that using a common logging configuration would be the
most expedient way of implementing this.  This method has the added benefit
of being easily modifiable outside of code (when our needs change).

The logging filename follows a specific behavior by "falling back" to a less
desirable method when the current one fails.  This determination is made
ONLY at application initialization.  In order of most to least
desirable, below is a list of the desired behavior:

1) Retrieve a predetermined key that is stored in an INI file passed via
   the command line.  The fully qualified path should be specified in the
   INI file, but it could be relative.
2) The name of the INI file passed via the command line with ".log" 
appended.
   Preferably stored in the same location as the INI file.  The INI file 
will
   not be stored in the same location as the Python script.
3) The name of the original calling script with ".log" appeneded (from the
   example in my original post this would be "mymain.py.log").  Submodules
   do not override this name (e.g. "mymain.py" calls "mysub01.py" and the
   log filename used is still "mymain.py.log").  This log file would be
   stored in the same directory as the main script.
4) Use the default log name stored in the INI file.  Again this should be
   the fully qualified path, but could be relative.
5) Raise an error (resulting in a message being sent to the console and via
   an e-mail).

My (probably erroneous) speculation is that I can retrieve a handler
specified in the INI file and dynamically change the filename argument to
the desired value.  So far, I have been unable to figure out how to do this.

In summary, we need a way to override, at runtime, the filename stored in
the logging configuration file.

adTHANKSvance,
Kenneth Love




From hyugaricdeau at gmail.com  Mon Oct 15 09:22:05 2007
From: hyugaricdeau at gmail.com (Hyuga)
Date: Mon, 15 Oct 2007 13:22:05 -0000
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192218795.540056.51700@k35g2000prh.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
	<1192199862.532118.306290@t8g2000prg.googlegroups.com>
	<1192218795.540056.51700@k35g2000prh.googlegroups.com>
Message-ID: <1192454525.029343.217930@k35g2000prh.googlegroups.com>

On Oct 12, 3:53 pm, jeremito <jerem... at gmail.com> wrote:
> > NodeBox; nodebox.org
>
> > GUI application that creates either PDFs or Quicktime vids from python
> > code. Unix/Linux/MacOS.
>
> I actually found NodeBox in my googling.  This seems to be a stand
> alone application.  I need to be able to convert my images to a movie
> from my code I wrote myself.

Why?  Whether you're using a library or an external application, it's
not code that you wrote yourself.  There's shouldn't be any reason you
couldn't call an application like mencoder from your program.  Either
way you're certainly not going to find anything written in pure Python
for encoding video.



From bj_666 at gmx.net  Sat Oct 27 13:38:10 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 27 Oct 2007 17:38:10 GMT
Subject: os.walk and recursive deletion
References: <mailman.510.1193501272.13605.python-list@python.org>
Message-ID: <5ohbc1Fmgu6mU4@mid.uni-berlin.de>

On Sat, 27 Oct 2007 18:07:44 +0200, Martin Marcher wrote:

> Hello,
> 
> I'm playing around with os.walk and I made up del_tree(path) which I
> think is correct (in terms of the algorithm, but not as python wants
> it :)).

It's not correct in terms of the algorithm if you take the algorithm of
`os.walk()` into the equation.

> Here goes the script, as far as I tested it it runs fine in test mode.
> Now that is just use the print statements like attached below. as soon
> as os.rmdir and os.unlink are involved the iterator chokes. How do I
> get around that, or what should I use to be able to recursively delete
> everything under a certain subdir?

> #--snip
> import sys
> import os
> import unittest
> 
> def del_tree(path):
>    walker = os.walk(path)

`os.walk()` is itself diving recursivly into the subdirectories?

>    for entry in walker:
>       cwd = entry[0]
>       subdirs = entry[1]
>       files = entry[2]
>       print "Checking directory: %s" %(cwd, )
>       if files:
>          for file in files:
>             file = os.path.join(cwd, file)
>             print "The file is now: %s" % (file, )
>             #os.unlink(file)
>          print "OK directory %s has no more files, checking for
> subdirs..." % (cwd, )
>       else:
>          print "OK directory %s NEVER HAD FILES, checking for
> subdirs..." % (cwd, )
>       if not subdirs:
>          print "We can delete: %s" % (cwd, )
>          #os.rmdir(cwd)
>       else:
>          for subdir in subdirs:
>             subdir = os.path.join(cwd, subdir)
>             print "We need to recurse into: %s" % (subdir, )
>             del_tree(subdir)

?and here you are calling the your function recursively which then calls
again `os.walk()` on that subdirectory.  That's a little bit too much.

Just use `os.listdir()` (and `os.path.isdir()`) in your recursive function.

>    #os.rmdir(path)
>    print "Removing: %s" % (path, )
> #--snap

Or `shutil.rmtree()`.  :-)

Ciao,
	Marc 'BlackJack' Rintsch


From cadet.bramble at gmail.com  Thu Oct 25 10:17:02 2007
From: cadet.bramble at gmail.com (bramble)
Date: Thu, 25 Oct 2007 14:17:02 -0000
Subject: Cross-platform GUI development
In-Reply-To: <mailman.444.1193308343.13605.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<mailman.158.1192250064.927.python-list@python.org>
	<1193164449.831675.200600@i38g2000prf.googlegroups.com>
	<mailman.387.1193165961.13605.python-list@python.org>
	<1193270861.900672.125650@e34g2000pro.googlegroups.com>
	<mailman.444.1193308343.13605.python-list@python.org>
Message-ID: <1193321822.258787.55100@o3g2000hsb.googlegroups.com>

On Oct 25, 6:32 am, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/24/07, bramble <cadet.bram... at gmail.com> wrote:
>
> > In the end, GTK+ is themable, and it's a free software project, so if
> > the MS Windows port has warts, anyone can come along and polish it up
> > for that platform.
>
> There's been plenty to say about this in the past, so I will be brief:
> Being able to use the native theme API is necessary but not sufficient
> for native look and feel. Gtk doesn't even try for anything other than
> a cursory attempt at "look", and as far as I know doesn't have any
> real interest in doing so.
>
> I don't have any problem than that, but I don't like people
> misrepresenting what you get from using Gtk.

Sorry, I didn't mean to misrepresent GTK+. I clumsily jammed 2 ideas
into one sentence: one, that theming can mitigate some issues with
differences in L&F ("look and feel"), and two, that it's free
software, so contributors can try and make the L&F more native if it's
really that big a deal.

One reason I'm not crazy about wx because I don't like the idea of
adding yet another API layer into the mix. Wx seems quite large, and
if issues arise, debugging a GUI that calls another GUI does not seem
like a fun way to spend your time. Anyhow, my opinion is, pick one
good enough native GNU/Linux GUI toolkit that the community can
somewhat standardize on (and GTK+/PyGTK seems to fit that bill pretty
well), write your apps in that so they run really well on GNU/Linux
distros, and *then* get your apps running on secondary OS's as-needed.



From jeyasimhan at gmail.com  Tue Oct 23 08:42:13 2007
From: jeyasimhan at gmail.com (jai simhan)
Date: Tue, 23 Oct 2007 18:12:13 +0530
Subject: Problem with PEXPECT in Python
Message-ID: <648636520710230542q7f15a265kf33a757c23bba658@mail.gmail.com>

import sys,os
import pexpect

source_file= 'sourcefile.txt'

user='username'

ip='00.00.00.00'
desti_path='/home/jai/???'
password='bond007'





cmd ='scp'+' '+source_file+' '+user+'@'+ip+':'+desti_path

        try:

                foo = pexpect.spawn(cmd)

                foo.expect('.ssword:*')

                foo.sendline(passwd)

                foo.sendline('Passwd_to_server')

                foo.interact()

        except Exception,e:
                pass

Its simple, this should work, it works for me
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/bfbed332/attachment.html>

From aleax at mac.com  Thu Oct 18 09:47:54 2007
From: aleax at mac.com (Alex Martelli)
Date: Thu, 18 Oct 2007 06:47:54 -0700
Subject: Best way to generate alternate toggling values in a loop?
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<1192693425.381102.141680@i38g2000prf.googlegroups.com>
	<13hemo4beahm43a@corp.supernews.com>
Message-ID: <1i661yk.cqrnrg19nje3jN%aleax@mac.com>

Grant Edwards <grante at visi.com> wrote:
   ...
> I like the solution somebody sent me via PM:
> 
> def toggle():
>     while 1:
>         yield "Even"
>         yield "Odd"

I think the itertools-based solution is more elegant:

toggle = itertools.cycle(('Even', 'Odd'))

and use toggle rather than toggle() later; or, just use that
itertools.cycle call inside the expression instead of toggle().


Alex
 


From jorgen.maillist at gmail.com  Wed Oct  3 06:18:45 2007
From: jorgen.maillist at gmail.com (Jorgen Bodde)
Date: Wed, 3 Oct 2007 12:18:45 +0200
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <1191405464.131347.18420@r29g2000hsg.googlegroups.com>
References: <mailman.1402.1191343422.2658.python-list@python.org>
	<1191358854.210832.70630@n39g2000hsh.googlegroups.com>
	<mailman.1438.1191403809.2658.python-list@python.org>
	<1191405464.131347.18420@r29g2000hsg.googlegroups.com>
Message-ID: <11e49df10710030318t465a3293u619518ef971e0d90@mail.gmail.com>

Hi Paul,

> This seems like a reasonable explanation without having looked at the
> source code myself.

It's by thorough investigation ;-)

> Which part of the standard is this? Here's the XML 1.0 specification's
> section on whitespace:
>
> http://www.w3.org/TR/2006/REC-xml-20060816/#sec-white-space

Well 2.10 if I quote:

<quote>
Such white space is typically not intended for inclusion in the
delivered version of the document. On the other hand, "significant"
white space that should be preserved in the delivered version is
common, for example in poetry and source code.
</quote>

I interpret "significant" whitespaces as the ones between the words,
if whitespaces occur at the beginning of a line due to an indent like

<value>
     This is indented text
</value>

We can assume that the spaces in front of it are not significant
whitespaces. Because when I read the text node in python and it is not
included, I see no reason why it should be preserved. And if it is
preserved in the xml DOM, toprettyxml should first investigate how
many whitespaces are already there before adding more to indent the
text.

Also this happens. First the nodes are properly shown:

<value>
    <a> ... </a>
</value>
<value>
    <a> ... </a>
</value>

When writing back this sometimes happen (mind the blank lines):

<value>
    <a> ... </a>
</value>

<value>
    <a> ... </a>
</value>

And the next time, the spaces between the nodes is expanded again:

<value>
    <a> ... </a>
</value>


<value>
    <a> ... </a>
</value>

(etc) .. so when reading, modifying, writing XML files, the empty
blank lines will grow exponentially.

> It seems to me that applications (and the libraries which serve them)
> can choose what to do unless xml:space is set to "preserve". It does
> seem odd that the toprettyxml method chooses to respect existing
> whitespace whilst also disrupting it by adding more, however.

I would think (simplistic I'm sure) that if spaces are that important,
you can always use a CDATA tag which should treat the text inside as
raw data without any formatting and whitespace changes.

Should I file this as a bug to be solved? I have my workaround now,
but I read online that more people seem to have ran into this.

Regards,
- Jorgen


From __peter__ at web.de  Tue Oct  2 05:08:30 2007
From: __peter__ at web.de (Peter Otten)
Date: Tue, 2 Oct 2007 11:08:30 +0200
Subject: Overriding Logging Config FileHandler Filename
References: <mailman.1355.1191259791.2658.python-list@python.org>
Message-ID: <fdt1qe$krj$03$1@news.t-online.com>

Kenneth Love wrote:

> My (probably erroneous) speculation is that I can retrieve a handler
> specified in the INI file and dynamically change the filename argument
> to the desired value.  So far, I have been unable to figure out how to
> do this.

Here's a brute-force approach (tweaking the config file in memory before
passing it on to the logging module) that might work.

import logging.config

import ConfigParser
import StringIO

HANDLER = "handler"
LOGFILE = "alternate.log"

instream = open("some.cfg")
cp = ConfigParser.ConfigParser()
cp.readfp(instream)
section = "handler_%s" % HANDLER
oldargs = eval(cp.get(section, "args"))
cp.set(section, "args", (LOGFILE,) + oldargs[1:])

outstream = StringIO.StringIO()
cp.write(outstream)
outstream.seek(0)
logging.config.fileConfig(outstream)

logging.error("oops!")

Peter


From jelleferinga at gmail.com  Wed Oct 31 10:34:25 2007
From: jelleferinga at gmail.com (jelle feringa)
Date: Wed, 31 Oct 2007 15:34:25 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <192840a00710310722p41ec0037ybb0e2e470df0c6b6@mail.gmail.com>
References: <loom.20071031T132748-928@post.gmane.org>
	<192840a00710310722p41ec0037ybb0e2e470df0c6b6@mail.gmail.com>
Message-ID: <37fac3b90710310734y468c8147n406b36a0261bdda2@mail.gmail.com>

>
> What's your point? :/


that of making sure before you post and cause public emberassement?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/54269cd0/attachment.html>

From grante at visi.com  Wed Oct 10 10:48:45 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 10 Oct 2007 14:48:45 -0000
Subject: Fwd: NUCULAR fielded text searchable indexing
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<mailman.33.1191950662.916.python-list@python.org>
	<13gni9f4eq8pc4b@corp.supernews.com>
	<e1525e7f0710091158x34b1abc0nb8329ec04b579b51@mail.gmail.com>
	<mailman.39.1191956491.916.python-list@python.org>
Message-ID: <13gppidqsrrss1d@corp.supernews.com>

On 2007-10-09, Bill Hamilton <billwerk at gmail.com> wrote:
> On 10/9/07, Grant Edwards <grante at visi.com> wrote:
>> On 2007-10-09, Robin Becker <robin at reportlab.com> wrote:
>> > aaron.watters at gmail.com wrote:
>> >> On Oct 9, 8:46 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
>> >>> ps. there is a python project named "The Devil Framework", I cringe
>> >>> every time I hear about it.Nucularis not as bad, but it is close.
>> >>
>> >> Aw shucks.  I thought it was funny.  Can't I make fun of
>> >> politicians in my open source projects?  Besides there is
>> >> a great tradition of tounge-in-cheek package names, like
>> >> "Cold fusion", for example.
>> >>.......
>> >
>> > I think it's an excellent name :)
>>
>> And Bush would probably pronounce it "Nuke-lee-ur".
>
> I dislike Bush as much as the next guy, but could we please keep
> politics off the group?

I say, it's a joke, son!  

And there's nothing political about it.  

The "joke" is predicated on the incongruity between the
superficial logic of the statement and reality.  The
superficial part is the assumption that somebody who swaps two
syllables when pronouncing a word will swap them back when the
word is _spelled_ with them swapped.  The reality is that's not
they way language processing works the human brain.

There's also some incongruity in the assumption that George Bush
would be discussing an obscure Python library.

OK, it wasn't _that_ funny, but there wasn't anything even
remotely political about it.  I just needed somebody who is
widely know to mis-pronounce nuclear as "nuke-you-lar".  

Jimmy Carter would have worked just as well -- a little better,
actually, since he graduated from the Nuclear Engineering
program at the US Naval Acadamy, and the mere fact that he
mispronounces nuclear is sort of incongruous.  But, there
probably aren't that many people who remember how Jimmy Carter
pronounced the work nuclear, or that he had a degree in nuclear
engineering.

Anyway, I apologize for my attempt at humor, since it appears
to have somehow offended.

-- 
Grant Edwards                   grante             Yow! The Osmonds!  You are
                                  at               all Osmonds!!  Throwing up
                               visi.com            on a freeway at dawn!!!


From stargaming at gmail.com  Wed Oct 17 01:26:34 2007
From: stargaming at gmail.com (Stargaming)
Date: 17 Oct 2007 05:26:34 GMT
Subject: Dynamic and lazy import
References: <1192540610.799241.236160@t8g2000prg.googlegroups.com>
Message-ID: <47159d0a$0$11389$9b622d9e@news.freenet.de>

On Tue, 16 Oct 2007 13:16:50 +0000, Alexandre Badez wrote:

> Hye everyone,
> 
> I'm would like to do something a bit tricky.
> 
> I would like when I do something like to create a __init__ package's
> (here calle my_package) file witch make an action when we try to import
> something in this package...
> 
> Quiet like __getattribute__ work for a class, I would like this kind of
> behaviour for a whole module or a package
> 
> be a bit clearer:
> I've got a normal package/module/class (whathever) where I do something
> like:
> 
> from my_package import my_module
> 
> (but in the my_package I've got only: my_package / __init__.py
> 
> And in the __init__ of my my_package something like __getattribute__
> (but for a module) that would return something for my_module
> 
> I know, that I can do something like charging everything "before" in
> __init__ like:
> my_module = the_thing_I_want
> 
> But I need it to be lazy (because I may have many module witch could be
> very awful...).
> 
> Any idea ?
> Is it possible ?

Depending on the exact complexity of your needs and exact use case just 
inserting some code on top of every module could suffice. To reduce 
boilerplate, if the task you're trying to realize is pretty generic for 
every module, you could insert another module hiding this code and used 
like this::

    from .modregister import init
    init(__name__)

If you really have to _create_ modules dynamically, follow the advice 
given earlier in this thread.

HTH,
Stargaming


From theller at ctypes.org  Thu Oct 11 02:30:02 2007
From: theller at ctypes.org (Thomas Heller)
Date: Thu, 11 Oct 2007 08:30:02 +0200
Subject: Keeping track of subclasses and instances?
In-Reply-To: <fejpo9$vm$1@news1.carnet.hr>
References: <fejpo9$vm$1@news1.carnet.hr>
Message-ID: <fekfta$5kj$1@sea.gmane.org>

Karlo Lozovina schrieb:
> Hi,
> 
> what's the best way to keep track of user-made subclasses, and instances of
> those subclasses? I just need a pointer in a right direction... thanks.
> 

New style classes have a __subclasses__ class method that shows the direct subclasses:

Python 2.4.4 (#71, Oct 18 2006, 08:34:43) [MSC v.1310 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> object.__subclasses__()
[<type 'type'>, <type 'weakref'>, <type 'int'>, <type 'basestring'>, <type 'list'>, <type 'NoneType'>, ...
>>>

No builtin mechanism for instances exists, afaik.

Thomas



From info at wingware.com  Wed Oct 24 17:58:59 2007
From: info at wingware.com (Wingware)
Date: Wed, 24 Oct 2007 17:58:59 -0400
Subject: ANN: Wing IDE 3.0.1 Released
Message-ID: <471FC023.8070407@wingware.com>

Hi,

We're happy to announce version 3.0.1 of Wing IDE, an advanced development
environment for the Python programming language. It is available from:

http://wingware.com/downloads

This release focuses on fixing minor usability issues found in Wing 3.0 and
improves and expands the VI keyboard personality.  It is a free upgrade
for all Wing 3.0 users.

See the change log for details:

http://wingware.com/pub/wingide/3.0.1/CHANGELOG.txt

*About Wing IDE*

Wing IDE is an integrated development environment for the Python programming
language.  It provides powerful debugging, editing, code intelligence,
testing, and search capabilities that reduce development and debugging
time, cut down on coding errors, and make it easier to understand
and navigate Python code.

New features added in Wing 3.0 include:

* Multi-threaded debugger
* Debug value tooltips in editor, debug probe, and interactive shell
* Autocompletion and call tips in debug probe and interactive shell
* Automatically updating project directories
* Testing tool, currently supporting unittest derived tests (*)
* OS Commands tool for executing and interacting with external commands (*)
* Rewritten indentation analysis and conversion (*)
* Introduction of Wing IDE 101, a free edition for beginning programmers
* Available as a .deb package for Debian and Ubuntu
* Support for Stackless Python
* Support for 64 bit Python on Windows and Linux

(*)'d items are available in Wing IDE Professional only.

System requirements are Windows 2000 or later, OS X 10.3.9 or later for PPC or
Intel (requires X11 Server), or a recent Linux system (either 32 or 64 bit).

*Purchasing & Upgrading*

Wing IDE Professional & Wing IDE Personal are commercial software and require
a license  to run.  To upgrade a 2.x license or purchase a new 3.x license:

Upgrade        https://wingware.com/store/upgrade
Purchase       https://wingware.com/store/purchase

Any 2.x license sold after May 2nd 2006 is free to upgrade; others cost
1/2 the normal price to upgrade.

-- 

The Wingware Team
Wingware | Python IDE
Advancing Software Development

www.wingware.com




From scripteaze at gmail.com  Tue Oct 23 20:43:35 2007
From: scripteaze at gmail.com (scripteaze at gmail.com)
Date: Tue, 23 Oct 2007 17:43:35 -0700
Subject: urllib2 web auth issues!!
Message-ID: <1193186615.908779.132620@t8g2000prg.googlegroups.com>

import urllib2

# Create an OpenerDirector with support for Basic HTTP
Authentication...
auth_handler = urllib2.HTTPBasicAuthHandler()
auth_handler.add_password('realm', 'https://www.somesite.com/
loginform.ws?mod=ticketing', 'myid', 'passwd')
opener = urllib2.build_opener(auth_handler)
# install it globally so it can be used with urlopen.
urllib2.install_opener(opener)
urllib2.urlopen('???????????????')

After i login, that page it brings me to looks like this:

'https://ticketing.somesite.com/i=3729336821930248510/inbox.ws'

where 3729336821930248510 is always different. i need a way to let me
know tha login was successful



From parnell.s at comcast.net  Thu Oct 18 22:44:25 2007
From: parnell.s at comcast.net (Ixiaus)
Date: Thu, 18 Oct 2007 19:44:25 -0700
Subject: Noob: Loops and the 'else' construct
Message-ID: <1192761865.440552.115230@i38g2000prf.googlegroups.com>

I have just come across a site that discusses Python's 'for' and
'while' loops as having an (optional) 'else' structure.

At first glance I interpreted it as being a bit like the 'default'
structure in PHP's switch block... But the switch block isn't a loop,
so, I am now confused as to the reason for using 'else' with the for
and while loops...

A few quick tests basically show that statements in the else structure
are executed at the fulfillment of the loop's expression (ie, no
break).

Example:

for i in range(10):
         print i
else:
         print 'the end!'

0
1
2
3
4
5
6
7
8
9
10
the end!



From donn.ingle at gmail.com  Mon Oct 29 13:34:01 2007
From: donn.ingle at gmail.com (Donn Ingle)
Date: Mon, 29 Oct 2007 19:34:01 +0200
Subject: A class question
References: <fg1mgb$261$1@ger.gmane.org>
Message-ID: <fg55b1$ju4$1@ger.gmane.org>

bump :)



From panguohualove at sina.com  Wed Oct 10 23:31:15 2007
From: panguohualove at sina.com (panguohua)
Date: Wed, 10 Oct 2007 20:31:15 -0700
Subject: a good website for softwares,movies and music ,sex etc.
Message-ID: <1192073475.455550.221680@v3g2000hsg.googlegroups.com>

www.space666.com



good!!!!!!!!



From erik at myemma.com  Wed Oct 10 00:22:22 2007
From: erik at myemma.com (Erik Jones)
Date: Tue, 9 Oct 2007 23:22:22 -0500
Subject: mutable objects as dictionary keys
In-Reply-To: <496883.54652.qm@web81005.mail.mud.yahoo.com>
References: <496883.54652.qm@web81005.mail.mud.yahoo.com>
Message-ID: <094BE9D6-BC0B-4C68-A30F-C640C75EF517@myemma.com>

On Oct 9, 2007, at 12:44 PM, Andreas Kraemer wrote:

> Hi everyone,
>
> I know that the subject of mutable objects as dictionary keys has  
> been discussed a number of times in this forum (see for instance  
> "freezing" of classes), but I would love to hear the thoughts of  
> the experts on the approach below.
>
> The use case that I encounter frequently is the classification of  
> objects according to certain rules or properties: Say, I have  
> objects A, B, C, ... (e.g. instances of a class, dict, etc), I can  
> write
>
>     d = {}
>     d.setdefault(A,[]).append(A)
>     d.setdefault(B,[]).append(B)
>     ...
>
> so objects that map to the same hash key will end up in the same  
> bucket. (A "real world" example I had to deal with recently was for  
> instance the construction of a directed acyclic graph from many  
> directed trees where identical subtrees needed to be identified.)
>
> The easiest way is of course to define custom __hash__() and __eq__ 
> () methods, but this breaks if objects are mutated (accidentally)  
> after having been inserted into the dictionary. The "best" working  
> approach I came up with so far is to generate an "immutable view" V  
> of a mutable object O according to my classification rule, delegate  
> O.__hash__ and O.__eq__ to V, and make sure that the V is memoized  
> and cannot (easily) be altered later, even when O is mutated:
>
> def hashable_mutable_factory(mutable,rule):
>   class _mutable(mutable):
>     def __init__(self,*args,**kw):
>       self._view_cache = {}
>       super(_mutable,self).__init__(*args,**kw)
>     def _view(self):
>       id_ = id(self)
>       if not self._view_cache.has_key(id_):
>         self._view_cache[id_] = rule(self)
>       return self._view_cache[id_]
>     def __hash__(self):
>       return hash(self._view())
>     def __eq__(self,other):
>       return self._view() == other._view()
>   return _mutable
>
> E.g.:
>
> >>> hashable_dict = hashable_mutable_factory(dict,lambda obj:  
> frozenset(obj.iteritems()))
> >>> h = hashable_dict(a=1,b=2)
> >>> d = {}
> >>> d[h] = 'foo'
> >>> d
> {{'a': 1, 'b': 2}: 'foo'}
> >>> h['c'] = 'bar'
> >>> d
> {{'a': 1, 'c': 'bar', 'b': 2}: 'foo'}
> >>> g = hashable_dict(a=1,b=2)
> >>> h
> {'a': 1, 'c': 'bar', 'b': 2}
> >>> g
> {'a': 1, 'b': 2}
> >>> id(g) == id(h)
> False
> >>> g == h
> True
>
> I slightly favor the factory function idiom above over defining the  
> rule in a super class (this would have to be done for each mutable  
> type and rule function separately), especially since I read that  
> future versions of python (2.6 ?, 3.0 ?) will contain class  
> decorators and allow syntax like class A(*bases): pass
>
> Is there a better approach? Any comments are appreciated.
>
> I have been seriously using Python for one year know, mostly in the  
> context of graph algorithms etc., and it has always been a  
> delightful coding experience!

I can definitely see how this would be useful for the real world  
example you mentioned for pruning trees and what-not.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From t.tolgabilir at gmail.com  Thu Oct 18 14:20:01 2007
From: t.tolgabilir at gmail.com (nayloon)
Date: Thu, 18 Oct 2007 11:20:01 -0700
Subject: 1 year free
Message-ID: <1192731601.170016.61260@i38g2000prf.googlegroups.com>

www.nayloon.com business2business website.Full dynamic and 2 language
10 pages.You post your products you can find customer from all over
world.Try it.You will see the different.



From brenNOSPAMbarn at NObrenSPAMbarn.net  Sun Oct 28 02:58:48 2007
From: brenNOSPAMbarn at NObrenSPAMbarn.net (OKB (not okblacke))
Date: Sun, 28 Oct 2007 06:58:48 GMT
Subject: Unicode raw string containing \u
Message-ID: <Xns99D6F3EC75B79OKB@199.45.49.11>

    	I'm trying to write a unicode raw string literal, and I seem to be 
running up against a conflict between the \uXXXX unicode character 
escape and the need to have a literal \u (i.e., backslash followed by a 
lowercase letter U) in the string.

    	If I do ur"\universe" I get a UnicodeDecodeError because (I think) 
it tries to interpret \universe as a Unicode escape.  But if I do 
ur"\\universe" I get a string that contains two backslashes followed by 
the word "universe".

    	How can I specify a unicode raw string literal that contains a 
single backslash followed by the word "universe"?

-- 
--OKB (not okblacke)
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is
no path, and leave a trail."
	--author unknown


From bernecky at gmail.com  Sat Oct 20 18:46:20 2007
From: bernecky at gmail.com (rbe)
Date: Sat, 20 Oct 2007 15:46:20 -0700
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
In-Reply-To: <47133159.9010204@acm.org>
References: <47133159.9010204@acm.org>
Message-ID: <1192920380.625668.221960@i13g2000prf.googlegroups.com>

On Oct 15, 5:22 am, Mike Kent <mk... at acm.org> wrote:
> Conference page
>         // with links to program details //
>                 (updated Friday 10/12)
>
>        http://www.sigapl.org/apl2007.html...

At APL2007, I'll be announcing the release of the APEX APL compiler,
version 0.0.0, under GPL Version 2.
If you can't wait until then, you can download it for Dyalog Linux at
www.snakeisland.com.

Bob



From ptmcg at austin.rr.com  Tue Oct 23 11:03:39 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 23 Oct 2007 08:03:39 -0700
Subject: Regular Expression
In-Reply-To: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
References: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
Message-ID: <1193151819.991937.47850@i38g2000prf.googlegroups.com>

On Oct 22, 5:29 pm, patrick.wa... at gmail.com wrote:
> Hi,
>
> I'm trying to learn regular expressions, but I am having trouble with
> this.  I want to search a document that has mixed data; however, the
> last line of every entry has something like C5H4N4O3 or CH5N3.ClH.
> All of the letters are upper case and there will always be numbers and
> possibly one .
>
> However below only gave me none.
>
> import os, codecs, re
>
> text = 'C:\\text_samples\\sample.txt'
> text = codecs.open(text,'r','utf-8')
>
> test = re.compile('\u+\d+\.')
>
> for line in text:
>     print test.search(line)

If those are chemical symbols, then I guarantee that there will be
lower case letters in the expression (like the "l" in "ClH").

-- Paul



From guettli.usenet at thomas-guettler.de  Mon Oct  1 11:06:26 2007
From: guettli.usenet at thomas-guettler.de (Thomas Guettler)
Date: 1 Oct 2007 15:06:26 GMT
Subject: How popular is Django ?
References: <1191245034.626711.306380@19g2000hsx.googlegroups.com>
Message-ID: <5mcgniFcjc00U1@mid.individual.net>

seb.haase at gmail.com wrote:

> Hi!
>
> I was surprised when I did a google-groups search for python,
> (
> http://groups.google.com/groups/search?q=python&qt_s=Search+Groups
> )
> it shows these groups:
> comp.lang.python  with about 11000 users,
> and second,
> Django users
> Discussion group for Django users. Django is a high-level Python
> Web ...
>
> with 6500 members !!!!

comp.lang.python is a usenet group.

django-users is a mailinglist hosted by google. 

The number of django-users subscribers can be calculated by google.
But the number of comp.lang.python users can only be guessed.

BTW: I think django is popular. There is a lot of traffic on the list. I
like django, too.

 Thomas

-- 
Thomas G?ttler, http://www.thomas-guettler.de/ http://www.tbz-pariv.de/
E-Mail: guettli (*) thomas-guettler + de
Spam Catcher: niemand.leermann at thomas-guettler.de



From panguohualove at sina.com  Wed Oct 10 06:14:13 2007
From: panguohualove at sina.com (panguohua)
Date: Wed, 10 Oct 2007 03:14:13 -0700
Subject: more information for making money
Message-ID: <1192011253.886650.234880@50g2000hsm.googlegroups.com>

www.space666.com



sports  ,  poker ,etc.



From besturk at gmail.com  Sat Oct 27 04:55:52 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 27 Oct 2007 01:55:52 -0700
Subject: How can i do proxy in urllib.urlopen?
In-Reply-To: <1193472854.889001.38550@o3g2000hsb.googlegroups.com>
References: <1193472854.889001.38550@o3g2000hsb.googlegroups.com>
Message-ID: <1193475352.526131.137430@o3g2000hsb.googlegroups.com>

I read the urllib
reference and set http_proxy="my proxy". But it didn't work. I can't
even get authenticated. Is there anyway that we can set the proxy?



From rhc2 at twcny.rr.com  Tue Oct 16 21:27:53 2007
From: rhc2 at twcny.rr.com (Dick Crepeau)
Date: Tue, 16 Oct 2007 21:27:53 -0400
Subject: why doesn't have this list a "reply-to" ?
Message-ID: <47156519.2090905@twcny.rr.com>

It seems to me the original question was how can I reply to a posted 
message.

I'm new here and see that while there are replies to several messages, 
many times, like with this note, the issue is brought up as if it is new.

I don't know how to do a reply, can someone tell me how?  This note was 
sent to: python-list at python.org with the subject copied from an earlier 
note.

No need to discuss the politics of the choice.

Dick C





From ldo at geek-central.gen.new_zealand  Thu Oct  4 03:58:51 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 20:58:51 +1300
Subject: A question about subprocess
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
Message-ID: <fe26g8$vs0$1@lust.ihug.co.nz>

In message <1191429980.784610.39020 at 22g2000hsm.googlegroups.com>, JD wrote:

> I want send my jobs over a whole bunch of machines (using ssh). The
> jobs will need to be run in the following pattern:
> 
> (Machine A)   (Machine B)  (Machine C)
> 
> Job A1             Job B1            Job C1
> 
>  Job A2           Job B2            etc
> 
>  Job A3          etc
> 
>  etc
> 
> Jobs runing on machine A, B, C should be in parallel, however, for
> each machine, jobs should run one after another.
> 
> How can I do it with the subprocess?

You could do it with SSH. A command like

    ssh machine_a run_job_a1.py

will not terminate until the execution of run_job_a1.py on the remote
machine has terminated. So you end up with a lot of "proxy" subprocesses,
if you like, on the master machine, each one waiting for a remote process
on some master machine to terminate. As the controlling process notices the
termination of each proxy process, it looks to see which slave machine that
maps to, and sends another command to start the next job on that machine.


From jstroud at mbi.ucla.edu  Mon Oct  1 18:10:11 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 01 Oct 2007 15:10:11 -0700
Subject: Question about quoting style.
In-Reply-To: <470153d9$0$27239$426a74cc@news.free.fr>
References: <mailman.1366.1191268378.2658.python-list@python.org>
	<470153d9$0$27239$426a74cc@news.free.fr>
Message-ID: <fdrr61$ipf$1@daisy.noc.ucla.edu>

Bruno Desthuilliers wrote:
> First point is that Python has no "variable interpolation".

If you squint, it kind of does*:

    >>> print '%(language)s has %(#)03d quote types.' % \
              {'language': "Python", "#": 2}
    Python has 002 quote types.

You might think if the dict as a name space and the formatting operation 
as performing interpolation--but this take on formatting might be a stretch.

James

* http://docs.python.org/lib/typesseq-strings.html


From http  Thu Oct 11 04:24:50 2007
From: http (Paul Rubin)
Date: 11 Oct 2007 01:24:50 -0700
Subject: for loop question
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<mailman.38.1192046903.927.python-list@python.org>
	<1192047900.124690.284890@19g2000hsx.googlegroups.com>
	<13gr6p3apqjik3c@corp.supernews.com>
Message-ID: <7xwstuawj1.fsf@ruckus.brouhaha.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
> >>  >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
> >>  >>> for a,b in pairs:
> >>  ...     print a,b
> > 
> > for a, b in zip(test, test[1:]):
> >   print a, b
> 
> May be unfortunately slow if test is half a gigabyte of data, what with 
> essentially making three copies of it. Lazy procedures like the generator 
> expression above are often much better.

Untested:

    from itertools import izip, islice
    for a,b in izip(test, islice(test,1,None)):
       print a,b

seems more natural.


From doug.farrell at gmail.com  Mon Oct 29 12:22:40 2007
From: doug.farrell at gmail.com (writeson)
Date: Mon, 29 Oct 2007 16:22:40 -0000
Subject: python2.5 and mysqldb
Message-ID: <1193674960.082948.179940@22g2000hsm.googlegroups.com>

Hi all,

At work we're using python2.3 and I'd like to start getting us moved
up to python2.5. We run Centos4 which is the free, open source version
of RedHat Enterprise. I've got python2.5 installed on this machine,
but am stuck trying to get mysqldb installed and running on this
machine. I've tried with easy_install and by building from the tar
file and both return a long list of errors from a gcc compile. I'm not
sure what to do next to resolve this issue, so if anyone could give me
some guidance it would be greatly appreciated.

Thanks in advance,
Doug



From emre.sevinc at gmail.com  Wed Oct 10 15:03:45 2007
From: emre.sevinc at gmail.com (Emre Sevinc)
Date: Wed, 10 Oct 2007 19:03:45 -0000
Subject: How can Python print the value of an attribute but complain it does
	not exist?
Message-ID: <1192043025.291748.198740@19g2000hsx.googlegroups.com>

Hello,

I'm a Python newbie and I'm having a strange trouble with the
following code:

generatefeedvector-debug.py
===============================================================
import feedparser
import re

def getwordcounts(url):
    # Parse the feed
    d = feedparser.parse(url)
    wc = {}

    # Loop over all the entries
    for e in d.entries:
        if 'summary' in e: summary = e.summary
        else: summary = e.description

        # Extract a list of words
        words = getwords(e.title + ' ' + summary)
        for word in words:
            wc.setdefault(word, 0)
            wc[word] += 1

    print d.feed.title
    return d.feed.title

def getwords(html):
    # Remove all the HTML tags
    txt = re.compile(r'<[^>]+>').sub('', html)

    # Split words by all non-alpha characters
    words = re.compile(r'[^A-Z^a-z]+').split(txt)

    # Convert to lowercase
    return [word.lower() for word in words if word != '']

apcount = {}
wordcounts = {}
for feedurl in file('feedlist1-2.txt'):
    title = getwordcounts(feedurl)
==================================================================

When I run it:

$ python generatefeedvector-debug.py
Signal vs. Noise
Traceback (most recent call last):
  File "generatefeedvector-debug.py", line 37, in ?
    title = getwordcounts(feedurl)
  File "generatefeedvector-debug.py", line 21, in getwordcounts
    print d.feed.title
  File "/var/lib/python-support/python2.4/feedparser.py", line 236, in
__getattr__
    raise AttributeError, "object has no attribute '%s'" % key
AttributeError: object has no attribute 'title'


The strange thing is that it DOES print the value d.feed.title then
complains AttributeError: object has no attribute 'title'. What am I
doing wrong?

The file feedlist1-2.txt includes just a single line:

$ cat feedlist1-2.txt
http://feeds.feedburner.com/37signals/beMH

I'm using Python 2.4 on Debian GNU/Linux.

Any ideas about how to fix this error message?

Regards,

--
Emre Sevinc



From cprogrammer at gmail.com  Wed Oct 10 05:57:03 2007
From: cprogrammer at gmail.com (cprogrammer)
Date: Wed, 10 Oct 2007 02:57:03 -0700
Subject: struct.unpack less than 1 byte
Message-ID: <1192010223.490715.205380@57g2000hsv.googlegroups.com>

hello all,

i need to read from a file a struct like this [1byte, 12bits, 12bits]
reading 1 byte or more is not a problem ... but the 12 bits values
are ...

thanks



From tomamil at gmail.com  Mon Oct  8 08:54:55 2007
From: tomamil at gmail.com (tomamil)
Date: Mon, 08 Oct 2007 12:54:55 -0000
Subject: Really basic problem
In-Reply-To: <slrnfgk18v.kbh.hat@se-162.se.wtb.tue.nl>
References: <mailman.1663.1191838188.2658.python-list@python.org>
	<slrnfgk18v.kbh.hat@se-162.se.wtb.tue.nl>
Message-ID: <1191848095.974251.43250@19g2000hsx.googlegroups.com>

thanks you all guys for your help, it's really appreciated...

m.



From namesagame-usenet at yahoo.com  Wed Oct  3 14:00:38 2007
From: namesagame-usenet at yahoo.com (gamename)
Date: Wed, 03 Oct 2007 11:00:38 -0700
Subject: C Source Code Generator For Test Cases
In-Reply-To: <1191246352.203798.200650@n39g2000hsh.googlegroups.com>
References: <1191001738.456766.176050@n39g2000hsh.googlegroups.com>
	<1191246352.203798.200650@n39g2000hsh.googlegroups.com>
Message-ID: <1191434438.568114.90670@g4g2000hsf.googlegroups.com>


> You might want to look at COG (http://www.nedbatchelder.com/code/
> cog/).  It might be helpful to you.  I really enjoy using it and keep
> finding things to use it with.

Thanks Mike.  I agree. COG looks really promising.

-T



From otacon22 at email.it  Tue Oct 23 09:20:59 2007
From: otacon22 at email.it (Otacon22)
Date: Tue, 23 Oct 2007 06:20:59 -0700
Subject: Cross-compiling porting of io.h, distutils compilator argument
Message-ID: <1193145659.546620.44060@q3g2000prf.googlegroups.com>

Hi all,
I want to create a robot with a router board based on processor
atheros 2.6, called "fonera".
I have installed a version  of linux, Openwrt and python and i want to
use it for some reasons, but i have problems to have access to GPIO
pins on the board to read and write on harware(pic, memories...) so i
want to include into python a porting of io.h
I founded an  already python wrapped version of io.h called ioport.c
that i found here:
http://www.hare.demon.co.uk/ioport/ioport.html
( i can't use pyparallel because i need to specify port
address ,different from parallel )
but i have a problem: the compiler for that platform can be used only
in cross compiling mode, and i have it on my pc, so it is compiled for
my pc, and i can't use it on my router.

I know that to compile that module to been used i need to use
distutils, but distutils, when i run it, say me that can't find the
compiler gcc, so the only way that i have to compile this module is to
compile it on my pc, but i need to use the cross-compilator.So i need
to specify to distutils the path of the compilator, and also where to
pick io.h, because the io.h version for openwrt is different, and i
have it with the cross-compilator, so i need also to specify the path
of include libraries.
If someone know how i can also directly use the gcc cross-compilator
to build the module, without using distutils, but i need also to know
when i compile it, then howto use on python as library.

thanks

Otacon22



From python.comp.lang.id982 at vbgunz.com  Thu Oct  4 18:17:52 2007
From: python.comp.lang.id982 at vbgunz.com (Victor B. Gonzalez)
Date: Thu, 4 Oct 2007 18:17:52 -0400
Subject: Is there a nicer way to do this?
In-Reply-To: <87ejgawpug.fsf@keizer.soze.com>
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <200710041817.57804.python.comp.lang.id982@vbgunz.com>

On Thursday 04 October 2007 5:07:51 pm Stefan Arentz wrote:
> Is there a better way to do the following?
>
> attributes = ['foo', 'bar']
>
> attributeNames = {}
> n = 1
> for attribute in attributes:
>    attributeNames["AttributeName.%d" % n] = attribute
>    n = n + 1
>
> It works, but I am wondering if there is a more pythonic way to
> do this.
>
>  S.

just curious. why are you bothering in creating a dictionary? why not just 
iterate over attributes? why duplicate it and make it bigger? I personally 
think the dictionary is unnecessary but I may be wrong.

anyhow, I keep getting "SyntaxError: Non-ASCII character '\xc2'..." on line 5. 
anyone know what this is? I couldn't run the script but from looking at it, 
it appears you're making some pointless keys when indexes may be better.

-- 
Best Regards
Victor B. Gonzalez
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 196 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/22208046/attachment.sig>

From sami.jan at gmail.com  Mon Oct 22 15:41:55 2007
From: sami.jan at gmail.com (sami)
Date: Mon, 22 Oct 2007 19:41:55 -0000
Subject: using "request" variable in python web program
In-Reply-To: <mailman.329.1193065682.13605.python-list@python.org>
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
	<1192924876.257468.27810@v29g2000prd.googlegroups.com>
	<1192996769.692284.163300@v23g2000prn.googlegroups.com>
	<1192997247.369705.326060@q5g2000prf.googlegroups.com>
	<1193042095.275835.245920@i13g2000prf.googlegroups.com>
	<mailman.329.1193065682.13605.python-list@python.org>
Message-ID: <1193082115.445604.226670@v29g2000prd.googlegroups.com>

> Not exactly - this is the "query string" part of the URI.
> Request and Response are the two messages defined by the HTTP protocol.
> When you type a URL or click on a link or press a button in a page, your
> browser builds the appropiate Request message and sends it to the server.
> After processing, the server emits the Response message, and the browser
> displays it or otherwise processes the response.
>
> --
> Gabriel Genellina

Thanks Paul and Gabriel - I am confused I guess - I do know about the
request/response mechanism, I wrote this app a while ago:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/522983 - I
wrote this app before in C and decoded request/response params using a
sniffer - I ported it to Python since I wanted to learn Python

> The string after "?" in a URL is actually the "query string" and is
> typically exposed as the QUERY_STRING environment variable in CGI. See
> here for more specific details:

This is what is mixing me up - an example given in the source for
Pyfacebook - http://pyfacebook.googlecode.com/svn/trunk/examples/examples.py

def simple_web_app(request, api_key, secret_key):
    fb = Facebook(api_key, secret_key, request.GET['auth_token'])
    fb.auth.getSession()

It seemed to me "request" was a key in a key/value pair string/
dictionary

Anyway, I have the "auth_token" now and I can pass these 3 string
values to as Facebook(<api_key>, <secret_key>, <auth_token>) - and
it's moving along - but I am persevering :) no PHP for me - I hope I
can put up a tut for this afterwards

Thanks again for the help, guys



From python.list at tim.thechases.com  Wed Oct 24 10:49:10 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 24 Oct 2007 09:49:10 -0500
Subject: Better writing in python
In-Reply-To: <1193232109.743432.97240@i13g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193232109.743432.97240@i13g2000prf.googlegroups.com>
Message-ID: <471F5B66.7020301@tim.thechases.com>

> Here is my real code:
> 
> with
> dArguments = {
>   'argName' : {
>     'mandatory' : bool, # True or False
>     [...], # other field we do not care here
>   }
> }
> 
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if cls.dArguments[arg]['mandatory']:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)

I'm kinda confused, as you're iterating over cls.dArguments, so 
arg appears to be a dictionary (addressable with ['mandatory']), 
but then you're using it (the arg dictionary) as a key into 
cls.dArguments which seems suspect.  I suspect you want to do 
something like

   for arg in cls.dArguments:
     if arg['manditory']:
       lMandatory.append(arg)
     else:
       lOptional.append(arg)
   return (lMandatory, lOptional)

I've done something like this in the past:

   def partition(i, f):
     # can be made into list-comprehensions instead if iters
     return (x for x in i if f(x)), (x for x in i if not f(x))

   odds,evens = partition(xrange(10), lambda x: x & 1)
   print "Odd numbers:"
   for thing in odds: print thing
   print "Even numbers:"
   for thing in evens: print thing

which could be translated in your case to something like

   return partition(cls.dArguments,
     lambda x: x['manditory']
     )

I don't know if you find it "more pythonic" or easier to read 
(which in a way is an aspect of "more pythonic"), but in some 
cases, I find this fits my brain better.

-tkc








From no-spam at not-existing.invalid  Thu Oct 25 15:56:54 2007
From: no-spam at not-existing.invalid (robert)
Date: Thu, 25 Oct 2007 21:56:54 +0200
Subject: "sem_post: Invalid argument"
Message-ID: <ffqse9$ci8$1@news.albasani.net>

On a server the binary (red hat) installed python2.4 and also a 
fresh compiled python2.5 spits "sem_post: Invalid argument".
What is this and how can this solved?

Robert

==============

server [~]# python2.4
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
Python 2.4.3 (#1, Jun  6 2006, 21:10:41)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-54)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
sem_post: Invalid argument
sem_post: Invalid argument
 >>> sem_post: Invalid argument

sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
sem_post: Invalid argument
server [~]# uname -a
Linux server 2.4.34.1-p4-smp-bigmem-JWH #1 SMP Mon Mar 19 03:26:57 
JST 2007 i686 i686 i386 GNU/Linux
server [~]#


From bbxx789_05ss at yahoo.com  Fri Oct 12 14:53:25 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: 12 Oct 2007 11:53:25 -0700
Subject: raw_input() and utf-8 formatted chars
Message-ID: <1192197233.824215.301890@e9g2000prf.googlegroups.com>

s = 'A\xcc\x88'   #capital A with umlaut
print s           #displays capital A with umlaut

s = raw_input('Enter: ')   #A\xcc\x88
print s                    #displays A\xcc\x88

print len(input)           #9


It looks like every character of the string I enter in utf-8 is being
interpreted literally as 9 separate characters rather than one
character.  How do I enter a capital A with an umlaut so that python
treats it as one character?



From george.sakkis at gmail.com  Wed Oct 31 19:02:58 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 31 Oct 2007 23:02:58 -0000
Subject: A Python 3000 Question
In-Reply-To: <13ihvgqk7klhb9@corp.supernews.com>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
	<1193836481.203103.111400@22g2000hsm.googlegroups.com>
	<13ihvgqk7klhb9@corp.supernews.com>
Message-ID: <1193871778.135260.54950@o80g2000hse.googlegroups.com>

On Oct 31, 6:13 pm, Steven D'Aprano

> What you have measured is a local optimization that is only useful when
> you have a tight loop with lots of calls to the same len():
>
> Len = sequence.__len__
> while Len() < 100000:
>     foo(sequence)

Exactly what timeit() does, a tight loop.

> But what Neil is measuring is relevant for the more general case of
> calling len() on arbitrary objects at arbitrary times:
>
> x = len(sequence)
> y = 42 + len("xyz")
> if len(records) == 12:
>     print "twelve!"
>
> To get the benefit of the micro-optimization you suggested, you would
> need to write this:
>
> Len = sequence.__len__
> x = Len()
> Len = "xyz".__len__
> y = 42 + Len()
> Len = records.__len__
> if Len() == 12:
>     print "twelve!"
>
> Not only is that an especially ugly, confusing piece of code, it is also
> counter-productive as you still have to do the method lookup every single
> time.

The whole point of the optimization is avoiding 99999 attribute
lookups of the timeit loop. For a single call both times are
practically zero so the snippet above is just silly.

> Taking the method lookup is an apple-and-oranges comparison. It is useful
> to know for the times when you don't want an apple, you want an orange
> (i.e. the tight loop example above).
>
> This is an apples-and-apples comparison:
>
> >>> import timeit
> >>> timeit.Timer("Len = seq.__len__; Len()", "seq = range(12)").repeat()
>
> [1.3109469413757324, 0.7687380313873291, 0.55280089378356934]>>> timeit.Timer("len(seq)", "seq = range(12)").repeat()
>
> [0.60111594200134277, 0.5977931022644043, 0.59935498237609863]
>
> The time to do the lookup and call the method is about 0.6 microseconds
> whether you do it manually or let len() do it.

That assumes you know the internals of len(). Perhaps it does
something smarter for lists, or perhaps attribute lookup is faster at
the C level. I don't know, and that's exactly the point, I don't need
to know the internals to do the comparison of two callables.

> The logic behind the micro-optimization trick is to recognize when you
> can avoid the cost of repeated method lookups by doing it once only. That
> is not relevant to the question of whether len() should be a function or
> a method.

No disagreement here; I didn't bring up performance and it's not at
all a reason I consider len() as a function to be a design mistake.
What I dispute is Neil's assertion that "len as a builtin can be
faster than len as an attribute" and bringing as evidence the timings
that include attribute lookups. That statement is just wrong;
comparing X to an attribute assumes you have the attribute in the
first place, you don't need to look it up.

George



From gagsl-py2 at yahoo.com.ar  Tue Oct 23 15:54:12 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 23 Oct 2007 16:54:12 -0300
Subject: Write by logging.FileHandler to one file by many processess
References: <ff5397$j9g$1@nemesis.news.tpi.pl>
	<1192628746.196204.207620@t8g2000prg.googlegroups.com>
	<5nmjffFiouurU4@mid.uni-berlin.de>
	<mailman.152.1192676917.13605.python-list@python.org>
	<1193126891.210538.54830@k35g2000prh.googlegroups.com>
Message-ID: <op.t0n1kmkvx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Tue, 23 Oct 2007 05:08:11 -0300, Vinay Sajip <vinay_sajip at yahoo.co.uk>  
escribi?:

> On Oct 18, 4:08 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
> wrote:
>> Yes, output from several processes comes horribly mixed...
>> I've avoided it using separate log files for each process; but if that's
>> not possible, one could try using syslog or a SocketHandler and a  
>> separate
>> listening process.
>
> The Python logging docs even contain a working example of such a
> listening process (receiver):
>
> http://www.python.org/doc/current/lib/network-logging.html

Great!

-- 
Gabriel Genellina



From deets at nospam.web.de  Sat Oct 20 10:32:22 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 20 Oct 2007 16:32:22 +0200
Subject: How can i store pickle dumps data ?
In-Reply-To: <1192869918.043569.223280@v23g2000prn.googlegroups.com>
References: <1192869918.043569.223280@v23g2000prn.googlegroups.com>
Message-ID: <5nuhs1Fk172sU1@mid.uni-berlin.de>

Abandoned schrieb:
> Hi..
> I have some dictionary as {2:3, 4:6, 5:7.........}
> I want to pickle to these dictionary and save to database but i
> couldn't..
> 
> My code for adding..
> a=eval(dict)
> a=pickle.dumps(a, -1)
> cursor2.execute("INSERT INTO cache VALUES ('%s', %s)", (x[0],a))
> conn2.commit()
> 
> i try in UTF-8 postresql database (data type BYTEA) and it gives me
> this error:
>> psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
>> 0x80
>> HINT:  This error can also happen if the byte sequence does not match
>> the encoding expected by the server, which is controlled by
>> "client_encoding".
> 
> i try in LATIN5 postgresql database (data type BYTEA) and it add first


http://mail.python.org/pipermail/python-list/2004-September/280867.html


Diez


From bozonm at vscht.cz  Thu Oct 25 11:42:36 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Thu, 25 Oct 2007 17:42:36 +0200
Subject: Delete all not allowed characters..
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
Message-ID: <pan.2007.10.25.15.42.34.428907@vscht.cz>

On Thu, 25 Oct 2007 07:52:36 -0700, Abandoned wrote:

> Hi..
> I want to delete all now allowed characters in my text.
> I use this function:
> 
> def clear(s1=""):
>     if s1:
>         allowed =
> [u'+',u'0',u'1',u'2',u'3',u'4',u'5',u'6',u'7',u'8',u'9',u' ', u'?',
> u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', 'A',
> 'C', 'B', 'E', 'D', 'G', 'F', 'I', 'H', 'K', 'J', 'M', 'L', 'O', 'N',
> 'Q', 'P', 'S', 'R', 'U', 'T', 'W', 'V', 'Y', 'X', 'Z', 'a', 'c', 'b',
> 'e', 'd', 'g', 'f', 'i', 'h', 'k', 'j', 'm', 'l', 'o', 'n', 'q', 'p',
> 's', 'r', 'u', 't', 'w', 'v', 'y', 'x', 'z']
>         s1 = "".join(ch for ch in s1 if ch in allowed)
>         return s1
> 
> ....And my problem this function replace the character to "" but i
> want to " "
> for example:
> input: Exam%^^ple
> output: Exam   ple
> I want to this output but in my code output "Example"
> How can i do quickly because the text is very long..

the list comprehension does not allow "else",
but it can be used in a similar form:

s2 = ""
for ch in s1:
    s2 += ch if ch in allowed else " "

(maybe this could be written more nicely)


From erik at myemma.com  Wed Oct 10 16:52:45 2007
From: erik at myemma.com (Erik Jones)
Date: Wed, 10 Oct 2007 15:52:45 -0500
Subject: I'm starting to think like a Pythonista
In-Reply-To: <fejah0$lkk$1@solaris.cc.vt.edu>
References: <fejah0$lkk$1@solaris.cc.vt.edu>
Message-ID: <DE565828-E461-4B72-81E4-CDEF02A40475@myemma.com>


On Oct 10, 2007, at 2:51 PM, brad wrote:

> I was looking at a way to implement Ruby's upto method in python. I  
> came
> up with the code below... three years ago, I would never have  
> thought of
> list comprehension, today it seems second nature. This may be totally
> un-Pythonic, but I thought it was kind of clever. Man, for some  
> reason,
> I feel like being rude and lofty acting :)
>
> low_odds = [1,3,5,7,9]
> # make a list containing 10 - 98 evens only
> big_evens =  big_evens = [x for x in list(xrange(99)) if x % 2 == 0  
> and
> x >8]

big_evens = range(10, 100, 2)

>
> low_evens = [2,4,6,8]
> # make a list containing 11 - 99 odds only
> big_odds = [x for x in list(xrange(100)) if x % 2 != 0 and x >9]

big_odds = range(11, 100, 2)


Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From bj_666 at gmx.net  Wed Oct  3 08:49:51 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 3 Oct 2007 12:49:51 GMT
Subject: toprettyxml messes up with whitespaces
References: <mailman.1402.1191343422.2658.python-list@python.org>
	<1191358854.210832.70630@n39g2000hsh.googlegroups.com>
	<mailman.1438.1191403809.2658.python-list@python.org>
	<1191405464.131347.18420@r29g2000hsg.googlegroups.com>
	<mailman.1441.1191406731.2658.python-list@python.org>
Message-ID: <5mhhffFddm9kU1@mid.uni-berlin.de>

On Wed, 03 Oct 2007 12:18:45 +0200, Jorgen Bodde wrote:

>> Which part of the standard is this? Here's the XML 1.0 specification's
>> section on whitespace:
>>
>> http://www.w3.org/TR/2006/REC-xml-20060816/#sec-white-space
> 
> Well 2.10 if I quote:
> 
> <quote>
> Such white space is typically not intended for inclusion in the
> delivered version of the document. On the other hand, "significant"
> white space that should be preserved in the delivered version is
> common, for example in poetry and source code.
> </quote>
> 
> I interpret "significant" whitespaces as the ones between the words,
> if whitespaces occur at the beginning of a line due to an indent like

Significant whitespace is all whitespace in nodes that may contain text. 
You need a DTD or schema to decide this, that's why all pretty printing
without a DTD or schema is broken IMHO.  Because you then simply don't
know if it is safe to strip or add whitespace.

> <value>
>      This is indented text
> </value>
> 
> We can assume that the spaces in front of it are not significant
> whitespaces.

I can't.  You are just guessing.

> Because when I read the text node in python and it is not
> included, I see no reason why it should be preserved.

But it should be included.

Ciao,
	Marc 'BlackJack' Rintsch


From kar1107 at gmail.com  Sat Oct 27 01:42:16 2007
From: kar1107 at gmail.com (Karthik Gurusamy)
Date: Sat, 27 Oct 2007 05:42:16 -0000
Subject: simple question on dictionary usage
In-Reply-To: <ffuerv$12ih$1@stationair.kjsl.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
Message-ID: <1193463736.817123.150830@e34g2000pro.googlegroups.com>

On Oct 26, 9:29 pm, Frank Stutzman <stutz... at skywagon.kjsl.com> wrote:
> My apologies in advance, I'm new to python
>
> Say, I have a dictionary that looks like this:
>
> record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
>         'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339',
>         'E6': '1182', 'RPM': '996', 'C6': '311', 'C5': '300',
>         'C4': '349', 'CLD': '0', 'E5': '1148', 'C2': '329',
>         'MAP': '15', 'OIL': '167', 'HP': '19', 'E1': '1137',
>         'MARK': '', 'E3': '1163', 'TIME': '15:43:54',
>         'E2': '1169'}
>
> From this dictionary I would like to create another dictionary calld
> 'egt') that has all of the keys that start with the letter 'E'.  In
> otherwords it should look like this:
>
> egt = {'E6': '1182','E1': '1137','E4': '1157','E5': '1148',
>        'E2': '1169','E3': '1163'}
>
> This should be pretty easy, but somehow with all my googling I've
> not found a hint.

One possible solution (read list-comprehension if you not familiar
with it):

>>> record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
...         'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339',
...         'E6': '1182', 'RPM': '996', 'C6': '311', 'C5': '300',
...         'C4': '349', 'CLD': '0', 'E5': '1148', 'C2': '329',
...         'MAP': '15', 'OIL': '167', 'HP': '19', 'E1': '1137',
...         'MARK': '', 'E3': '1163', 'TIME': '15:43:54',
...         'E2': '1169'}
>>> egt = dict([(k, record[k]) for k in record if k.startswith('E')])
>>> egt
{'E5': '1148', 'E4': '1157', 'E6': '1182', 'E1': '1137', 'E3': '1163',
'E2': '1169'}

Karthik

>
> Thanks in advance
>
> --
> Frank Stutzman




From "atavory\" at (none)  Wed Oct 24 18:20:18 2007
From: "atavory\" at (none) (none)
Date: Thu, 25 Oct 2007 00:20:18 +0200
Subject: Python and Combinatorics
Message-ID: <471fc476$1@news.bezeqint.net>

	Hello,

	Is there some package to calculate combinatorical stuff like (n over 
k), i.e., n!/(k!(n - k!) ?

	I know it can be written in about 3 lines of code, but still...

	Thanks,

	Ami


From david at nospam.spam  Fri Oct 19 00:28:56 2007
From: david at nospam.spam (david)
Date: Fri, 19 Oct 2007 14:28:56 +1000
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <mailman.149.1192669683.13605.python-list@python.org>
References: <471530E3.9090602@gmail.com>	<1192587229.888.13.camel@viola.izb.knu.ac.kr>	<mailman.109.1192591826.13605.python-list@python.org>	<13hdap1151s7u94@corp.supernews.com>
	<mailman.149.1192669683.13605.python-list@python.org>
Message-ID: <13hgck7uhu1m1f@corp.supernews.com>

Robert Kern wrote:
> [david] wrote:
>> Steve Lamb wrote:
>>> On 2007-10-17, Byung-Hee HWANG <bh at izb.knu.ac.kr> wrote:
>>>> Just click "Ctrl-L", then you can reply to lists directly if you use
>>>> good mailer like mutt or thunderbird or evolution ;; 
>>>     Thunderbird only if it has the list-reply patch, has either enigmail or
>>> mhengy installed and has the reply-to-list addon installed.  Otherwise, no,
>>> Thunderbird still, years later, lacks that feature.  Part of the reason why I
>>> am test driving gmane in slrn right now.  :)
>> I'm using Thunderbird 2.0.0.0: I use the right-click menu.
> 
> And click what? I have Thunderbird 2.0.0.6 on OS X and only see "Reply to Sender
> Only" and "Reply to All".
> 

Sorry, I was only responding to the technical content.

What I meant was, one platform (check the user-agent field) has 
implemented the default build differently, and has done so for a long time.

[david]


From schaefer.mp at gmail.com  Wed Oct 17 09:51:11 2007
From: schaefer.mp at gmail.com (schaefer.mp at gmail.com)
Date: Wed, 17 Oct 2007 13:51:11 -0000
Subject: Can you determine the sign of the polar form of a complex number?
In-Reply-To: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
Message-ID: <1192629071.834342.243370@i38g2000prf.googlegroups.com>

Just to clarify what I'm after:

If you plot (-3)^n where n is a set of negative real numbers between 0
and -20 for example, then you get a discontinuos line due to the
problem mentioned above with fractional exponents. However, you can
compute what the correct absolute value of the the missing points
should be (see z2 above for an example), but I would like to know how
to determine what the correct sign of z2 should be so that it fits the
graph.





From python.list at tim.thechases.com  Tue Oct 16 14:52:31 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 16 Oct 2007 13:52:31 -0500
Subject: how to convert string to number?
In-Reply-To: <BLU107-W45441799345E5042B783C8B49C0@phx.gbl>
References: <mailman.68.1192547833.13605.python-list@python.org>	<1192556770.939866.249160@e9g2000prf.googlegroups.com>
	<BLU107-W45441799345E5042B783C8B49C0@phx.gbl>
Message-ID: <4715086F.6080008@tim.thechases.com>

> I have struggling to efficiently convert a string list to
> number. Here is my problem. I have a file that contains lines
> such as:
> 
> data_1 1 1 2 3.5
> 
> After I read the data from the file by using readlines(), each
> line contains a string. I use the re moduel to split the line
> into ['data_1', '1','1','2','3.5']. I want to create a
> dictionary which contains
> 
> {'data_1':[1 1 2 3.5]}
> 
> The problem is I coud not efficiently find a way to convert
> the string to number.
> 
> Does anyone know how to create such dictionary efficiently?

Despite my Spidey-sense tingling that this is a homework 
assignment, as similar forms of the question have popped up 
several times in the last week, I supress it this time.

Paraphrasing Andy Dufresne, "Mr. Wang, do you trust your file?"[1]

If you don't trust the content of your file, you have to know either

  1) how many columns of data to expect or
  2) the type each should be (int or float)

If the same type for each is okay, you can use something like

   >>> s = {}
   >>> for line in file('in.txt'):
   ...     k,v = line.rstrip('\n').split(None, 1)
   ...     s[k] = map(float, v.split())
   ...
   >>> s
   {'data_1': [1.0, 1.0, 2.0, 3.5], 'data_4': [1.0, 1.0, 8.0, 4.5]}

However, if you want them to be the actual types that evaluating 
them would give (thus the trust-your-source issue), you can use this:

   >>> s = {}
   >>> for line in file('in.txt'):
   ...     k,v = line.rstrip('\n').split(None, 1)
   ...     s[k] = map(eval, v.split())
   ...
   >>> s
   {'data_1': [1, 1, 2, 3.5], 'data_4': [1, 1, 8, 4.5]}


Both instances don't try to do anything smart with duplicate 
keys, so if you want to append, Bruno Desthuilliers *just* posted 
(in the last hour or so) a nice tip on this using 
setdefault().append()

-tkc

[1]http://www.finestquotes.com/movie_quotes/movie/Shawshank%20Redemption/page/0.htm







From root at dev.nul.invalid  Mon Oct 22 23:45:45 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 05:45:45 +0200 (CEST)
Subject: Python - why don't this script work?
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
Message-ID: <Xns99D1F1B7AAE8DMyBigKitty@194.177.96.26>

Ohmster <root at dev.nul.invalid> wrote in
news:Xns99D1DDAA9F9F3MyBigKitty at 194.177.96.26: 

> Here is my output when I try to run it on my Fedora 6 machine:
> 
> [ohmster at ohmster bench]$ image-harvester.py 
> http://public.fotki.com/DaGennelman/
> /home/ohmster/scripts/image-harvester.py: line 59: from: command not
> found [ohmster at ohmster bench]$

The original page for this script is here:
http://web.mit.edu/pgbovine/www/image-harvester.htm

I figured it out, I have to run python I think first then the script and 
the URL like this:
$ python image-harvester.py http://public.fotki.com/DaGennelman/

Now that actually seems to be doing something and it sure is busy now. It 
is making a lot of little subdirectories in my test directory. I had to 
copy image-harvester.py to the test directory first, then run python and 
image-harvester.py w/URL and it is going to town. Tons of subfolders, so 
far not images yet but it is not done. At least it is doing something now 
and not bitching and hanging. I guess I had to call up python and pass it 
to the script as the script does not seem to pull up python on it's own. So 
far I have 60 directories and about 45 robots.txt but no jpg files yet. I 
will let you know what happens.

Feel free to jump right in with your input on how this should or won't work 
and what can be done to make it better. I have all of my scripts in a 
$HOME/scripts/ directory and it is in my path but running this from another 
directory does not work if image-harvester.py is not in the harvest 
directory where I run the script from. I can right click on the image and 
save it but the amazing script trips all over itself with these wacky file 
name. I am all ears if someone figures it 

-- 
~Ohmster | ohmster /a/t/ ohmster dot com call ohmster
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From tjreedy at udel.edu  Fri Oct  5 00:31:21 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 5 Oct 2007 00:31:21 -0400
Subject: Is there a nicer way to do this?
References: <87ejgawpug.fsf@keizer.soze.com><mailman.1540.1191534836.2658.python-list@python.org>
	<1191535908.219535.14890@57g2000hsv.googlegroups.com>
Message-ID: <fe4emo$pbu$1@sea.gmane.org>


"Paul Hankin" <paul.hankin at gmail.com> wrote in message 
news:1191535908.219535.14890 at 57g2000hsv.googlegroups.com...
| On Oct 4, 10:53 pm, "Terry Reedy" <tjre... at udel.edu> wrote:
| > However,  mapping indexes to names should be more useful:
| >
| > >>> aNames = dict(enumerate(['foo', 'bar']))
| > >>> aNames
| >
| > {0: 'foo', 1: 'bar'}
|
| If you are right that a map from indices to name is best, there's no
| need for a dict: the original list already provides such a mapping.

Right.  The dict should be reversed, mapping names to indexes, if there 
were a use.





From fw3 at hotmail.co.jp  Wed Oct  3 13:24:11 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Wed, 3 Oct 2007 17:24:11 +0000
Subject: module confusion
In-Reply-To: <BLU107-W1F7D9BD82A606725A0AD7B4AF0@phx.gbl>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1413.1191364484.2658.python-list@python.org> 
	<fdvq7h$fbq$1@lust.ihug.co.nz>
	<BLU107-W1F7D9BD82A606725A0AD7B4AF0@phx.gbl>
Message-ID: <BLU107-W17BF9FE0731060799F876EB4AF0@phx.gbl>


Sorry for the wrong title of this email. Please ignore this email. I have resend the question with correct title.
 
Thanks
 
frank


From: fw3 at hotmail.co.jpTo: python-list at python.orgSubject: RE: module confusionDate: Wed, 3 Oct 2007 17:14:19 +0000


Hi,  I am moving from Matlab to Python+numpy+scipy. In Matlab you can use function dec2bin, hex2dec, dec2hex bin2dec functions to convert decimal to binary and heximal etc. Before I try to implement my own function in Python, I want to know whether in Python such functionalities are already there. Thanks Frank

MSN???????EMI Artists?????????????? SCHOOL OF SCHOOL http://music.jp.msn.com/ 
_________________________________________________________________
???????????????????????????MSN ???????
http://keyword.jp.msn.com/default.aspx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071003/214c1036/attachment.html>

From simon at brunningonline.net  Tue Oct 16 08:32:01 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 16 Oct 2007 13:32:01 +0100
Subject: Newbi Q: What is a rational for strings not being lists in Python?
In-Reply-To: <1192502360.503727.299990@e34g2000pro.googlegroups.com>
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
	<mailman.35.1192478621.13605.python-list@python.org>
	<1192502360.503727.299990@e34g2000pro.googlegroups.com>
Message-ID: <8c7f10c60710160532m50424373m895439d4d169155d@mail.gmail.com>

On 10/16/07, Benjamin <musiccomposition at gmail.com> wrote:

> Good explanation, but basically strings are immutable so they can be
> used in dicts.

Nope. Value types should always be immutable.

<http://c2.com/cgi/wiki?ValueObjectsShouldBeImmutable>

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From zaxfuuq at invalid.net  Sun Oct 21 06:35:20 2007
From: zaxfuuq at invalid.net (Wade Ward)
Date: Sun, 21 Oct 2007 03:35:20 -0700
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
References: <47133159.9010204@acm.org>
	<1192920380.625668.221960@i13g2000prf.googlegroups.com>
	<1192954949.817248.242120@y27g2000pre.googlegroups.com>
Message-ID: <qZmdnc2hJ8vOgIbanZ2dnUVZ_s6mnZ2d@comcast.com>



"Gosi" <gosinn at gmail.com> wrote in message 
news:1192954949.817248.242120 at y27g2000pre.googlegroups.com...
> On Oct 20, 10:46 pm, rbe <berne... at gmail.com> wrote:
>> On Oct 15, 5:22 am, Mike Kent <mk... at acm.org> wrote:
>>
>> > Conference page
>> >         // with links to program details //
>> >                 (updated Friday 10/12)
>>
>> >        http://www.sigapl.org/apl2007.html...
>>
>> At APL2007, I'll be announcing the release of the APEX APL compiler,
>> version 0.0.0, under GPL Version 2.
>> If you can't wait until then, you can download it for Dyalog Linux 
>> atwww.snakeisland.com.
>>
>> Bob
>
> Congratulations on your compiler.
>
> I looked through your pages and came across this
>
> "[This article originally appeared in the ACM SIGAPL Quote Quad, vol.
> 21, no.1, September 1990.]
>
> The APL character set has contributed, more than any other facet of
> the language, to its lack of acceptance in the computing community at
> large. The character set is a metaproblem -- not a problem in and of
> itself, but a creator of other recurring problems of hardware,
> software, ergonomics, and psychology. The adoption of new, ASCII-base
> dialects of APL, such as J, is suggested as one solution to the
> character set problem. "
>
> This is also the reason for why I will not be downloading your new
> compiler until there will be a J version of it, something I hope will
> be coming soon.
>
> I can not use the APL character set at all.
> It is too mixed up with my national characters.
>

witch ones?
-- 
wade ward
wade at zaxfuuq.net
"Der Katze tritt die Treppe hoch;  Der Kater tritt sie krumm.%
% De Teufel geit um; er bringt de menschen allet dumm."
schau, schau 




From marc.wyburn at googlemail.com  Fri Oct 19 12:35:36 2007
From: marc.wyburn at googlemail.com (marc wyburn)
Date: 19 Oct 2007 09:35:36 -0700
Subject: write whitespace/tab to a text file
In-Reply-To: <1192804409.415321.257150@k35g2000prh.googlegroups.com>
References: <1192804409.415321.257150@k35g2000prh.googlegroups.com>
Message-ID: <1192805658.343366.74650@i38g2000prf.googlegroups.com>

On Oct 19, 3:33 pm, dirkheld <dirkh... at gmail.com> wrote:
> Hi,
>
> I would l like to write some data to a text file. I want to write the
> data with whitespace or tabs in between so that I create tabular
> columns like in a spreadsheet. How can I do this in python.
> (btw, I'm new to python)
>
> names = ['John','Steve','asimov','fred','jim']
> ## output I would like in txt file : John         Steve
> asimov      fred     jim
>
> f=open('/User/home/Documents/programming/python/test.txt','w')
>         for x in range(len(names)):
>                 f.write(tags[x])
>         f.close()

I'm not sure exactly but you'll probably need to find out what the
ASCII code is for a tab.  Personally I would just write data straight
into Excel using the win32 extensions.  I'm sure the same can be
achieved with OO on a Linux box.



From gagsl-py2 at yahoo.com.ar  Thu Oct 18 00:57:39 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 01:57:39 -0300
Subject: Python Labs Move
References: <000601c8110f$999bdf10$0300a8c0@yourpa86z1i3g7>
Message-ID: <op.t0dmqdf4x6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 17 Oct 2007 19:46:47 -0300, Bill Garey <bilgarey at bellsouth.net>  
escribi?:

> What is PYTHON 2.2.1   and what does it do? I see  the Program on my  
> list of programs but don't know how to use it ,  or what it is!

See this FAQ entry: http://www.python.org/doc/faq/installed/

-- 
Gabriel Genellina



From gagsl-py2 at yahoo.com.ar  Wed Oct  3 01:38:38 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 02:38:38 -0300
Subject: Can't seem to find a Python Key detector.
References: <eb79828c0710022002k318daa02q4cdcdc047375b32b@mail.gmail.com>
Message-ID: <op.tzlwmoi3x6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 03 Oct 2007 00:02:03 -0300, Lamonte Harris <pyth0nc0d3r at gmail.com>  
escribi?:

> I'm looking for a module that acts on the input of the keyboard.   
> Something
> similar to pygame's key events, but something just easier to use not  
> based
> on pygame stuff.  If that makes any since.

This was discussed a few days ago  
<http://groups.google.com/group/comp.lang.python/msg/02aa20312ebf7bf3>

-- 
Gabriel Genellina



From mcfletch at vrplumber.com  Fri Oct  5 13:31:07 2007
From: mcfletch at vrplumber.com (Mike C. Fletcher)
Date: Fri, 05 Oct 2007 13:31:07 -0400
Subject: TwistedMatrix missing OpenSSL?
In-Reply-To: <eb79828c0710051016m5f1ec3eck22a27a69f15b068c@mail.gmail.com>
References: <eb79828c0710041256g254a7b23m4cf3eed0f2b6b6b1@mail.gmail.com>
	<eb79828c0710051016m5f1ec3eck22a27a69f15b068c@mail.gmail.com>
Message-ID: <470674DB.5090501@vrplumber.com>

Lamonte Harris wrote:
> Where can I get it?  Anyone got any idea?
http://www.voidspace.org.uk/python/modules.shtml#pycrypto

Might help.
Mike
>
>     Where do I get it?  I'm currently running python 2.5
>
> On 10/4/07, *Lamonte Harris* <pyth0nc0d3r at gmail.com 
> <mailto:pyth0nc0d3r at gmail.com>> wrote:
-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com



From george.sakkis at gmail.com  Wed Oct  3 14:27:01 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 03 Oct 2007 18:27:01 -0000
Subject: Class design question
In-Reply-To: <mailman.1470.1191434194.2658.python-list@python.org>
References: <mailman.1470.1191434194.2658.python-list@python.org>
Message-ID: <1191436021.775375.324010@r29g2000hsg.googlegroups.com>

On Oct 3, 1:04 pm, Adam Lanier <a... at krusty.madoff.com> wrote:
> Relatively new to python development and I have a general question
> regarding good class design.
>
> Say I have a couple of classes:
>
>         Class Foo:
>             params = [ ]
>             __init__( self, param ):
>                 ...
>
>         Class Bar:
>             data = None
>             __init__( self, data ):
>                 ...
>
> The class is going to be a wrapper around a list of Bars() (among other
> things).  I want the ability to pass to the constructor of Foo either:
>         a string                'baz'
>         a Bar object            Bar( 'baz' )
>         a list of strings and/or bars ( 'baz', Bar( 'something else' ))
>
> Am I going to have to use isinstance() to test the parameter to __init__
> to see what type of data I'm passing in, i.e.,
>
>         Class Foo:
>             params = [ ]
>             __init__( self, param ):
>                 if isinstance( param, list ):
>                     for p in param:
>                         addParam( p )
>                 elif isinstance( param, str):
>                     addParam( param )
>
>             addParam( self, param ):
>                 if isinstance( param, Bar ):
>                         self.params.add( param )
>                 elif isinstance( param, str ):
>                         self.params.add( Bar( param ))
>                 else:
>                         raise TypeError( "wrong type of input" )
>
> Am I missing something here or is there a more Pythonic way to
> accomplish this?

I would use variable argument list for this; it's also consistent with
your example Foo( 'baz', Bar( 'something else' )), otherwise you need
to call it as Foo([ 'baz', Bar( 'something else' ) ])

# always inherit from object unless you have a good reason not to
class Foo(object):

    # XXX this is a class instance, shared by all Foo instances;
    # XXX probably not what you intended
    params = [ ]

    def __init__(self, *args):
        # uncomment the following line for instance-specific params
        # self.params = []
        for arg in args:
            if not isinstance(arg, Bar):
               # let the Bar constructor to do typechecking or whatnot
                arg = Bar(arg)
            self.params.add(arg)


HTH,
George



From steve at holdenweb.com  Fri Oct  5 10:58:07 2007
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 05 Oct 2007 10:58:07 -0400
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <13gcjeqbhmh152c@corp.supernews.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
Message-ID: <fe5jdq$ds5$1@sea.gmane.org>

Grant Edwards wrote:
> On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:
> 
>> I've just been told by the editors at Python Magazine that the first 
>> issue is out.
> 
> The first issue is issue number 10?
> 
> That's a bit silly.
> 
It's the October edition. They obviously decided to make sure the month 
numbering was consistent across the volumes.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From besturk at gmail.com  Thu Oct 18 12:27:15 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 09:27:15 -0700
Subject: Convert string to command..
In-Reply-To: <87y7e01kcv.fsf@mulj.homelinux.net>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
Message-ID: <1192724835.765738.141790@q5g2000prf.googlegroups.com>

On Oct 18, 7:02 pm, Hrvoje Niksic <hnik... at xemacs.org> wrote:
> Abandoned <best... at gmail.com> writes:
> > import cPickle as pickle
> > a="{2:3,4:6,2:7}"
> > s=pickle.dumps(a, -1)
> > g=pickle.loads(s);
> > print g
> > '{2:3,4:6,2:7}'
>
> > Thank you very much for your answer but result is a string ??
>
> Because you gave it a string.  If you give it a dict, you'll get a
> dict:
>
> >>> import cPickle as pickle
> >>> a = {1:2, 3:4}
> >>> s = pickle.dumps(a, -1)
> >>> g = pickle.loads(s)
> >>> g
>
> {1: 2, 3: 4}
>
> If your existing database already has data in the "{...}" format, then
> eval it only the first time.  Then you'll get the dict which you can
> cache thruogh the use of dumps/loads.

Sorry i can't understand :(
Yes my database already has data in the "{..}" format and i select
this and i want to use it for dictionary..
in your example:
first data is a string
finally data is already string

I want to command like eval. (eval is not good because it is slow for
my project)



From byte8bits at gmail.com  Wed Oct 10 15:51:54 2007
From: byte8bits at gmail.com (brad)
Date: Wed, 10 Oct 2007 15:51:54 -0400
Subject: I'm starting to think like a Pythonista
Message-ID: <fejah0$lkk$1@solaris.cc.vt.edu>

I was looking at a way to implement Ruby's upto method in python. I came 
up with the code below... three years ago, I would never have thought of 
list comprehension, today it seems second nature. This may be totally 
un-Pythonic, but I thought it was kind of clever. Man, for some reason, 
I feel like being rude and lofty acting :)

low_odds = [1,3,5,7,9]
# make a list containing 10 - 98 evens only
big_evens =  big_evens = [x for x in list(xrange(99)) if x % 2 == 0 and 
x >8]

low_evens = [2,4,6,8]
# make a list containing 11 - 99 odds only
big_odds = [x for x in list(xrange(100)) if x % 2 != 0 and x >9]

y = 8

if y in low_evens:
    ok_numbers = low_odds + big_evens + [x for x in low_evens if x <= y]


From arkanes at gmail.com  Mon Oct  8 16:27:01 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 8 Oct 2007 15:27:01 -0500
Subject: pytz has so many timezones!
In-Reply-To: <1191874352.380018.216090@k79g2000hse.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
Message-ID: <4866bea60710081327s1e9464del192d7d8bf9beb94e@mail.gmail.com>

On 10/8/07, mensanator at aol.com <mensanator at aol.com> wrote:
> On Oct 8, 1:00 pm, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> > On Mon, Oct 08, 2007 at 10:41:03AM -0700, mensana... at aol.com wrote regarding Re: pytz has so many timezones!:
> >
> >
> >
> > > On Oct 8, 2:32 am, Sanjay <skpate... at gmail.com> wrote:
> > > > Hi All,
> >
> > > > I am using pytz.common_timezones to populate the timezone combo box of
> > > > some user registration form. But as it has so many timezones (around
> > > > 400),
> >
> > > There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> > > +12.
> >
> > > A handful of countries set their clocks offset by a half hour,
> > > but those aren't timezones.
> >
> > I'm sorry.  By what even vaguely useful definition of "Timezone" is it not a timezone if it's offset by half an hour?
>
> The miltary doesn't recognize them as timezones. They'll make
> a not that the local time observed doesn't match the timezone,
> but they don't call it a seperate timezone.
>

What do you mean by "the military" and why do you think they're
authoritative on the topic of timezones? The US timekeeping authority
is a branch of the US Navy, but as far as I know they don't define
timezones.

> >
> > > The 400 you're seeing are duplications based on locality. Of the 86
> > > shown in Windows, all but 33 are dulplicate references to the same
> > > timezones.
> >
> > > For example, Windows has seperate listings for
> >
> > > Central America
> > > Central Time (US & Canada)
> > > Guadalahara, Mexico City, Monterry - New
> > > Guadalahara, Mexico City, Monterry - Old
> > > Saskatchewan
> >
> > > but they are all GMT-6
> >
> > Those are non-duplicate (and perhaps inaccurate, I'm not sure).  US time switches from standard to Daylight Savings earlier than Mexico, and switches back later, as of this year.
>
> Duplicate timezones doesn't mean duplicate time,
> as you point out. Does the OP want to know the truth
> or does he want to know something he can understand.
>
> > Reducing them to a single time zone will result in aberrant functionality in one or more locales.
>
> I would hardly think that's an issue on the user registration
> form the OP is trying to create.
>

It's not clear at all from the OPs post exactly what functionality he
is trying to derive from the timezone. Since timezones (obviously)
contain more information than just the GMT offset (otherwise we
wouldn't even have them), he may very well want to use the timezone
given by the user to display correct local time to them. In this case,
the actual, correct, political timezone is important, not just the GMT
offset.

> >
> > Cheers,
> > Cliff
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From gagsl-py2 at yahoo.com.ar  Sun Oct 21 23:47:04 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 22 Oct 2007 00:47:04 -0300
Subject: Problem with shelve/gdbm
References: <20071019135850.xytvvhi1kcc8gswk@webmail.stanford.edu>
Message-ID: <op.t0kx4qt0x6zn5v@a98gizw.cpe.telecentro.net.ar>

En Fri, 19 Oct 2007 17:58:50 -0300, Douglas Applegate  
<dapple at stanford.edu> escribi?:

> I am having a problem with shelve. The problem I think is really with
> gdbm. I'll write out a file using shelve/gdbm on an amd64 machine and
> then I'll try to read it in on a i386 machine. The result is a 'gdbm
> fatal: read error.' Reversing directions results in the same problem.
> Below are two small programs that get at the heart of the problem:

Best to file a bug at http://bugs.python.org

-- 
Gabriel Genellina



From david at boddie.org.uk  Fri Oct 12 18:58:18 2007
From: david at boddie.org.uk (David Boddie)
Date: Sat, 13 Oct 2007 00:58:18 +0200
Subject: Cross-platform GUI development
Message-ID: <200710130058.19461.david@boddie.org.uk>

On Fri Oct 12 12:30:13 CEST 2007, Nick Craig-Wood wrote:

> I'd recommend wxPython over those becase
> 
> 1) native look and feel on all platforms
> 2) doesn't require expensive licensing for non-commercial apps (QT)

"Expensive" licensing is not required if you use the GNU General Public
License (version 2) for your software, or a license that falls under the
Trolltech GPL Exception:

  http://doc.trolltech.com/4.3/gpl.html

> 3) Isn't a pain to install on windows (GTK)
>
> That said, times change and 1-3 may have changed since I last looked
> at it!

Yes, times have changed.

(Other people in this thread have addressed points 1 and 3.)

David



From deets at nospam.web.de  Mon Oct 22 04:21:49 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 10:21:49 +0200
Subject: Failure to connect in SimpleXMLRPCServer/xmlrpclib
References: <1193034835.803633.121600@z24g2000prh.googlegroups.com>
Message-ID: <5o34stFkiv5sU1@mid.uni-berlin.de>

iu2 wrote:

> 
> Hi all,
> 
> I've copied the example of RPC usage from the Python's doc.
> When the client and server were on the same PC ("localhost") (I use
> Windows)
> it worked ok. But putting the server on a different PC raised the
> error:
> 
> gaierror: (11001, 'getaddrinfo failed')
> The error was raised upion accessing some function of the server,
> i.e.,
> print s.add_nums(1, 2, 3)  # server registered function
> 
> PCs in our organization are accessed by "\\<name>" so I used
> 
> s = xmlrpclib.Server(r'http://\\pc_name:8000')
> I got the same error when I put some non-existing name.
> Trying to remove the double-backslash from the PC's name raised the
> error:
> error: (10061, 'Connection refused')
> 
> I'll appreciate your help on this.

Maybe using the IP-address helps?

Diez


From neillee at dodo.com.au  Wed Oct 24 07:21:29 2007
From: neillee at dodo.com.au (neillee)
Date: Wed, 24 Oct 2007 21:21:29 +1000
Subject: Extracting/finding strings from a list
Message-ID: <000501c81630$0653dde0$0100000a@oemwy2dfyexm3a>

An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071024/a104e825/attachment.html>

From nagle at animats.com  Sat Oct 27 14:15:44 2007
From: nagle at animats.com (John Nagle)
Date: Sat, 27 Oct 2007 18:15:44 GMT
Subject: Is the subprocess module thread-safe?
Message-ID: <kfLUi.48549$RX.33343@newssvr11.news.prodigy.net>

    Can the subprocess module be used to launch subprocesses from threads?
Or does the subprocess module affect the entire process context, like "fork"?
Or is this OS dependent?

    Also, if you launch processes from the subprocess module module and
don't wait them to complete, do zombies accumulate under UNIX/Linux?

					John Nagle


From tjreedy at udel.edu  Tue Oct  2 11:28:13 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 2 Oct 2007 11:28:13 -0400
Subject: Inheriting from int or long
References: <1191329955.229829.259130@22g2000hsm.googlegroups.com>
Message-ID: <fdto2c$qap$1@sea.gmane.org>


<snorble at hotmail.com> wrote in message 
news:1191329955.229829.259130 at 22g2000hsm.googlegroups.com...
|I started creating a simple "bits" class, intended to act like a array
| of bits. This was my initial idea, basically just overriding the
| string representation to display the bitmask (so far):

For this purpose, for the reason you discovered, simply writing a bit_rep 
function would likely be better ;-)

[discovery of need to override possibly all of long's special methods]

|| Is there any way around this without reimplementing all of the bitwise
| operators? It's not the biggest deal to reimplement the operators, but
| it kind of defeats the benefit of inheriting from an integer type.

Since the code needed is mostly boilerplate, I think the standard Python 
distribution could and should contain builtin type subclass template files, 
at least for int/long/float for the reasons you give below.

| If there isn't a way around this, then I am curious in what situations
| it would be beneficial to inherit from an int or long.

As I already said, if you only want to change __str__, consider a 
standalone function. If you want to change the behavior of any of the 
operations and still tie into the syntax, then the alternative, wrapping 
the builtin, may be worse.

class mysub(int):
    ...
    def __add__(self, other): return mysub(self,other)

versus

class mywrap():
    def __init__(self,dat):
        self._int = dat # should test type
    def __add__(self, other): return mywrap(self._int + other._int)

| This issue
| seems more related to numeric types, since they are so centered around
| operations that involve assignment, as opposed to, say, a List, which
| has some operators (ex. +=), but does not depend on them (ex. use
| append() instead).

Terry Jan Reedy





From steven.bethard at gmail.com  Mon Oct 29 00:36:07 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 28 Oct 2007 22:36:07 -0600
Subject: PEP 299 and unit testing
In-Reply-To: <87k5p6fsxj.fsf@benfinney.id.au>
References: <871wbehef8.fsf@benfinney.id.au>
	<9tmdnf3x8fMezLjanZ2dnUVZ_oninZ2d@comcast.com>
	<87k5p6fsxj.fsf@benfinney.id.au>
Message-ID: <MYOdnbTNNt-l_rjanZ2dnUVZ_uyinZ2d@comcast.com>

Ben Finney wrote:
> Steven Bethard <steven.bethard at gmail.com> writes:
> 
>> Ben Finney wrote:
>>> What it doesn't allow is for the testing of the 'if __name__ ==
>>> "__main__":' clause itself. No matter how simple we make that,
>>> it's still functional code that can contain errors, be they
>>> obvious or subtle; yet it's code that *can't* be touched by the
>>> unit test (by design, it doesn't execute when the module is
>>> imported), leading to errors that won't be caught as early or
>>> easily as they might.
>> You could always use runpy.run_module.
> 
> For values of "always" that include Python 2.5, of course. (I'm still
> coding to Python 2.4, until 2.5 is more widespread.)
> 
> Thanks! I was unaware of that module. It does seem to nicely address
> the issue I discussed.

You might try the runpy module as-is with Python 2.4.  I don't know if 
it works, but it's pure Python so it's worth a try.

STeVe


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 18 04:52:27 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 08:52:27 -0000
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
	<87myuhyoz8.fsf@benfinney.id.au>
Message-ID: <13he7mbqd8gff85@corp.supernews.com>

On Thu, 18 Oct 2007 15:24:27 +1000, Ben Finney wrote:

> Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
> 
>> and help(reversed) but neither gives any insight to what happens when
>> you use reversed() on a sequence, then modify the sequence.
> 
> I would think the answer is the same for any question about modifying
> sequences while iterating: "undefined, therefore don't do that".

That's not correct. You can modify sequences while iterating, and the 
results are often perfectly predictable (but watch out for off-by-one 
errors):

>>> L = range(5)
>>> for item in L: # iterate over half of L
...     print item, "- deleting last item =", L[-1]
...     del L[-1]
...
0 - deleting last item = 4
1 - deleting last item = 3
2 - deleting last item = 2


(BTW, I'm not implying that the above is good practice. Far from it.)

The result of modifying sequences while you iterate over them is often -- 
not always -- hard to predict, but it is rarely indeterminate or 
undefined.

enumerate(), for example, iterates over the input sequence *as it is* at 
call time, not creation time. The result of modifying the sequence is 
well defined, but not necessarily what you want. For an exercise in 
Sorcerer's Apprentice, try this:

L = range(10)
for i, x in enumerate(L):
    print i, x
    L.append("another!")

Remember, ctrl-C to interrupt Python.


But even if it is undefined in the case of reversed(), there should be 
some sort of note in the docs. By analogy with sorted(), reversed() looks 
like it should make a copy. And if not, it looks like it should iterate 
over the input sequence as it exists when called. In fact, it does a 
little of both.


> In other words, if you think you'll be modifying the sequence during
> iteration (even if you're iterating indirectly via something like
> reversed()), iterate over a copy instead.

By analogy with sorted(), reversed() looks like it should be iterating 
over a copy. In any case, it isn't clear from the docs that reversed() is 
actually a type of view. I like views, it's just that I like to know when 
I'm working with one.


-- 
Steven.


From python.list at tim.thechases.com  Wed Oct 17 11:58:32 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 17 Oct 2007 10:58:32 -0500
Subject: HTML Parser for Jython
In-Reply-To: <1192634455.095171.187570@i13g2000prf.googlegroups.com>
References: <1192634455.095171.187570@i13g2000prf.googlegroups.com>
Message-ID: <47163128.4070507@tim.thechases.com>

> Does anybody know of a decent HTML parser for Jython? I have to do
> some screen scraping, and would rather use a tested module instead of
> rolling my own.

GIYF[0][1]
There are the batteries-included HTMLParser[2] and htmllib[3] 
modules, and the ever-popular (and more developer-friendly) 
BeautifulSoup[4] library as the first three results.  For running 
BS in Jython, it's recommended[5] to use an older (1.x?) version 
which are available at the BS site[6]

-tkc

[0]http://en.wikipedia.org/wiki/GIYF#G
[1]http://www.google.com/search?q=python%20html%20parser
[2]http://docs.python.org/lib/module-HTMLParser.html
[3]http://docs.python.org/lib/module-htmllib.html
[4]http://www.crummy.com/software/BeautifulSoup/
[5]http://mail.python.org/pipermail/python-list/2007-May/439618.html
[6]http://www.crummy.com/software/BeautifulSoup/download/1.x/










From dapple at stanford.edu  Fri Oct 19 16:58:50 2007
From: dapple at stanford.edu (Douglas Applegate)
Date: Fri, 19 Oct 2007 13:58:50 -0700
Subject: Problem with shelve/gdbm
Message-ID: <20071019135850.xytvvhi1kcc8gswk@webmail.stanford.edu>

Hi-

I am having a problem with shelve. The problem I think is really with  
gdbm. I'll write out a file using shelve/gdbm on an amd64 machine and  
then I'll try to read it in on a i386 machine. The result is a 'gdbm  
fatal: read error.' Reversing directions results in the same problem.  
Below are two small programs that get at the heart of the problem:

#test.py##############
#!/usr/bin/env python
import gdbm
print gdbm
storage = gdbm.open('test.pstor', 'c')

storage['test'] = 'a'

storage.close()


#test2.py#########
#!/usr/bin/env python
import gdbm
print gdbm
storage = gdbm.open('test.pstor', 'r')

print storage['test']

storage.close()

#####################################
The result of running test2 is as follows:

<module 'gdbm' from '/---/software/python/lib/python2.5/lib-dynload/gdbm.so'>
Traceback (most recent call last):
   File "./test2.py", line 4, in <module>
     storage = gdbm.open('test.pstor', 'r')
gdbm fatal: read error



It isn't much to go on, but has anybody else had this problem?


Cheers,
Doug


From mfmorss at aep.com  Wed Oct 24 10:35:46 2007
From: mfmorss at aep.com (Mark Morss)
Date: Wed, 24 Oct 2007 07:35:46 -0700
Subject: win32com.client documentation?
Message-ID: <1193236546.344635.54080@e9g2000prf.googlegroups.com>

I am a unix person, not new to Python, but new to Python programming
on windows.  Does anyone know where to find documentation on
win32com.client?  I have successfully installed this module and
implemented some example code.  But a comprehensive explanation of the
objects and methods available is nowhere to be found.  I have been
able to find a somewhat out-of-date O'Reilly book, nothing more.

I want to be able to script the creation of Excel spreadsheets and
Word documents, interract with Access data bases, and so forth.



From bozonm at vscht.cz  Wed Oct 24 18:44:28 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Thu, 25 Oct 2007 00:44:28 +0200
Subject: [0..9] list (range) syntax
Message-ID: <pan.2007.10.24.22.44.28.712782@vscht.cz>

many Python newcomers are confused why
range(10), does not include 10.

If there was a proposal for the new
syntax for ranges, which is known
e.g. from Pascal or Ruby...

>>> [0..10]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

...is there a chance to be approved ?

We have had a short discussion on it
at the irc, I hope that the fact
that nobody agreed it is a good idea
was just an accident :)

 -m.

PS:
to dream further..

>>> (0..10)
<generator object at 0xb7618dac>

or

>>> (0..10)
(0..10)

or

>>> (0..10)
range(0, 11)


From kyosohma at gmail.com  Thu Oct 18 17:18:53 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Thu, 18 Oct 2007 21:18:53 -0000
Subject: ANN: Pyrex 0.9.6.3
In-Reply-To: <mailman.127.1192636224.13605.python-announce-list@python.org>
References: <mailman.127.1192636224.13605.python-announce-list@python.org>
Message-ID: <1192742333.122426.42400@i38g2000prf.googlegroups.com>

On Oct 17, 4:12 am, Greg Ewing <greg.ew... at canterbury.ac.nz> wrote:
> Pyrex 0.9.6.3 is now available:
>
>    http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/
>
> Main features of this release:
>
>    * The C API now uses just one name in the module namespace,
>      instead of a name per C function.
>
>    * The 'cdef' keyword and following extern/public/api qualifiers
>      can be factored out of a group of declarations and made into
>      a block header, e.g.
>
>        cdef public:
>          int spam
>          float ftang
>          void tomato()
>
>    * A 3-argument form of the builtin getattr function has been
>      added, called getattr3().
>
> What is Pyrex?
> --------------
>
> Pyrex is a language for writing Python extension modules.
> It lets you freely mix operations on Python and C data, with
> all Python reference counting and error checking handled
> automatically.

Did anyone else notice that the setup.py file is screwed up? Or that
the link on this guy's website for the Test Suite/Framework is broken?

Mike



From software at ginstrom.com  Mon Oct 22 00:00:08 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Mon, 22 Oct 2007 13:00:08 +0900
Subject: Wrapping stdout in a codec
In-Reply-To: <1193020877.138550.53890@z24g2000prh.googlegroups.com>
References: <1193020877.138550.53890@z24g2000prh.googlegroups.com>
Message-ID: <072c01c81460$09b06430$0203a8c0@MOUSE>

> On Behalf Of JKPeck
> otherwise anonymous.  How can we accomplish this wrapping?  
> Our application may be loaded into a Python program that has 
> already set up stdout.

Do you mean something like this?

import sys

class OutStreamEncoder(object):
    """Wraps a stream with an encoder"""
    def __init__(self, outstream, encoding=None):
        self.out = outstream
        if not encoding:
            self.encoding = sys.getfilesystemencoding()
        else:
            self.encoding = encoding

    def write(self, obj):
        """Wraps the output stream, encoding Unicode
        strings with the specified encoding"""

        if isinstance(obj, unicode):
            self.out.write(obj.encode(self.encoding))
        else:
            self.out.write(obj)

    def __getattr__(self, attr):
        """Delegate everything but write to the stream"""
        return getattr(self.out, attr)

You can wrap sys.stdout easily:
sys.stdout = OutStreamEncoder(sys.stdout)

The code, with unit tests:
http://www.ginstrom.com/code/streamencode.zip

Regards,
Ryan Ginstrom



From grante at visi.com  Fri Oct 12 11:34:37 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 15:34:37 -0000
Subject: pyserial doesn't recognize virtual serial port
References: <1192168211.911755.71940@z24g2000prh.googlegroups.com>
Message-ID: <13gv50dm2m4us5c@corp.supernews.com>

On 2007-10-12, naveen.sabapathy at gmail.com <naveen.sabapathy at gmail.com> wrote:
> Hi,
>   I am trying to use virtual serial ports to develop/test my serial
> communication program. Running in to trouble...
>
>   I am using com0com to create the virtual ports. The virtual ports
> seem to be working fine when I test it with Hyperterminal.

I'm not sure what you mean by "virtual ports".  I've used
pyserial with several different network attached devices that
provide drivers that make them appear as COMnn devices under
windows.  I never had any problems.

> I am using the example program that comes with pyserial, as below.
> ---------------
> import serial
> ser = serial.Serial('CNCA0') #open virtual serial port
> print ser.portstr            #check which port was realy used
> ser.write("Hello")           #write a string
> ser.close()                  #close port
> -----------------
>
> The following is the error message:
>
> --------------
> Traceback (most recent call last):
>   File "C:\Python25\Naveen Files\TestSerial", line 2, in <module>
>     ser = serial.Serial('CNCA0') #open first serial port
>   File "c:\Python25\Lib\site-packages\serial\serialutil.py", line 156,
> in __init__
>     self.open()
>   File "c:\Python25\Lib\site-packages\serial\serialwin32.py", line 55,
> in open
>     raise SerialException("could not open port: %s" % msg)
> SerialException: could not open port: (2, 'CreateFile', 'The system
> cannot find the file specified.')
> --------------

If you specify a filename that the OS doesn't recognize there's
nothing pyserial can do about it.

> When I try with 'COM3', which comes inbuilt in my laptop, COM3 is
> recognized. Few other posts on the web seem to indicate pyserial
> should work fine with virtual serial ports. What am I missing?

My guess is you're not spelling the device name correctly.
Device names under Windows are even more screwed up than the
rest of the OS.  By default there are a limited set of devices
with specially mapped "DOS compatible" names such as LPT1,
COM3, etc.  My guess is that the device you're attempting to
use doesn't have a name that's mapped to the DOS-compatible
namespace as CNCA0.

You could try using the name \\.\CNCA0

Or you could try to figure otu how to map the device into the
DOS namespace as CNCA0.

You could also try running some sort of system call trace on
HyperTerminal to find out what name it's using to open the
device when you tell it to use port CNCA0.

Or you could just give up and switch to Linux.  [That's what
I'd recommend, personally.]

-- 
Grant Edwards                   grante             Yow! YOU PICKED KARL
                                  at               MALDEN'S NOSE!!
                               visi.com            


From aisaac at american.edu  Mon Oct 29 11:46:37 2007
From: aisaac at american.edu (Alan Isaac)
Date: Mon, 29 Oct 2007 15:46:37 GMT
Subject: simple try/except question
Message-ID: <xfnVi.9506$aJ3.5968@trnddc02>

Is the behavior below expected?
If so, why is the exception not caught?
Thanks,
Alan Isaac

>>> x,y='',''
>>> try: x/y
... except TypeError: print 'oops'
...
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for /: 'str' and 'str'


From jpmcw at comcast.net  Fri Oct 12 12:02:19 2007
From: jpmcw at comcast.net (John McWilliams)
Date: Fri, 12 Oct 2007 09:02:19 -0700
Subject: Top 10 Caribbean island destinations
In-Reply-To: <1192172034.949885.180230@v23g2000prn.googlegroups.com>
References: <1192137188.121863.212020@19g2000hsx.googlegroups.com>
	<470ed8b0$0$24257$4c368faf@roadrunner.com>
	<13gtn5go9k25p56@news.supernews.com>
	<1192172034.949885.180230@v23g2000prn.googlegroups.com>
Message-ID: <ofCdnQhAVddiBJLanZ2dnUVZ_sTinZ2d@comcast.com>

george.smith78 at gmail.com wrote:
> lol :) another one on baseball : 90% of the game is physical, the
> other half is mental.
> 
> GS
> george.smith78 at gmail.com
> 
> On Oct 11, 7:32 pm, willshak <wills... at 00hvc.rr.com> wrote:
>> on 10/11/2007 10:14 PM Audio expert said the following:
>>
>>> Now I know where NOT to go.
>>> TOO crowded for me.
>> No one goes there anymore. It's too crowded.
>> Lawrence "Yogi" Berra
>>
>>
>>
>>> <arturkl... at gmail.com> wrote in message
>>> news:1192137188.121863.212020 at 19g2000hsx.googlegroups.com...
>>>> See the most popular Caribbean island destinations
>>>> http://tropical-destinations.blogspot.com/
>> --
>>
>> Bill
>> In Hamptonburgh, NY
>> To email, remove the double zeroes after @
> 
> 


From nick.bastin at gmail.com  Mon Oct 22 01:25:48 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Mon, 22 Oct 2007 01:25:48 -0400
Subject: C++ version of the C Python API?
In-Reply-To: <471bddf1$0$26331$4c368faf@roadrunner.com>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<471BBD55.9030601@v.loewis.de>
	<mailman.297.1193001443.13605.python-list@python.org>
	<471bddf1$0$26331$4c368faf@roadrunner.com>
Message-ID: <66d0a6e10710212225r53f349e4td8b811a937c72f7c@mail.gmail.com>

On 10/21/07, Carl Banks <pavlovevidence at gmail.com> wrote:
> Now, a C++ API for CPython would necessarily be built on top of the C
> API, which carries some limitations relative to the OOP abilities of C++
> itself.

It wouldn't have to be, although it'd be much more of a maintenance
nightmare if it poked into the Python internals.

> But you shouldn't expect anything like the ability to freely inherit between
> C++ and Python classes.

You can do this with Boost.Python.

--
Nick


From ldo at geek-central.gen.new_zealand  Thu Oct  4 23:08:07 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 16:08:07 +1300
Subject: Python "implements <interface>" equivalent?
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
Message-ID: <fe49qn$asr$2@lust.ihug.co.nz>

In message <1191510706.528876.261780 at 57g2000hsv.googlegroups.com>, Wojciech
Gryc wrote:

> I'm a seasoned Java programmer and quite a big fan of interfaces...
> i.e. The idea that if I make a number of distinct classes that
> implement interface X, I can pass them all as parameters to functions
> or whatnot that require an X object.

Why?

Interfaces are just a euphemism for multiple inheritance, except it's sort
of a crippled compromise to keep the single-inheritance fanatics from
getting too unhappy.


From grey at dmiyu.org  Sat Oct 20 22:25:49 2007
From: grey at dmiyu.org (Steve Lamb)
Date: Sun, 21 Oct 2007 02:25:49 +0000 (UTC)
Subject: what is the difference between the two kinds of brackets?
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
	<NQkSi.6944$oA2.3942@nlpi068.nbdc.sbc.com>
	<mailman.256.1192884231.13605.python-list@python.org>
	<13hl97vnvqui6df@corp.supernews.com>
Message-ID: <slrnfhle3u.6mm.grey@dmiyu.org>

On 2007-10-21, Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:
> A note on terminology: the things inside curly brackets {} are called 
> dictionaries, or dicts, not directories. And the things you use to store 
> data in dictionaries are called keys, not indexes:

    Thanks for catching that.  Kids, don't late night post while waiting for
the other computer to do its thing.

-- 
         Steve C. Lamb         | But who decides what they dream?
       PGP Key: 1FC01004       |   And dream I do...  
-------------------------------+---------------------------------------------



From evan at yelp.com  Fri Oct 26 03:49:37 2007
From: evan at yelp.com (Evan Klitzke)
Date: Fri, 26 Oct 2007 00:49:37 -0700
Subject: modifying __class__
In-Reply-To: <19ac19520710260025w4a871cfekcc8f01a6d6143f17@mail.gmail.com>
References: <19ac19520710260025w4a871cfekcc8f01a6d6143f17@mail.gmail.com>
Message-ID: <cfb58d850710260049p4727f9afsdd9bd7872073a0ce@mail.gmail.com>

On 10/26/07, Piyush Jain <piyush.subscription at gmail.com> wrote:
> Hi,
> Itis possible to change the class of an object by assigning new value to
> __class__
> Is it possible to call my module when it is done.
> For example,
> object = ClassA()
>
> object.__class__ = classB # I want to call my method when this statement is
> executed.

Here's an example of how to do this:

class A(object):
        def __init__(self):
                self._class = A

        def getclass(self):
                return self._class

        def setclass(self, x):
                print 'setting __class__ to %s' % x
                self._class = x

        __class__ = property(getclass, setclass)

class B(object):
        pass

if __name__ == '__main__':
        a = A()
        print 'Running a.__class__ = B'
        a.__class__ = B

        print 'a.__class__ = %s' % a.__class__

> I want to do it in a general way. For ex. , whenever __class__ is changed
> for any object instance (of different classes), my own function is called.
> How should I do it ?

I think you can do this using a metaclass, and then have all of your
classes inherit from the metaclass rather than object, but I don't
really have any experience doing this.

-- 
Evan Klitzke <evan at yelp.com>


From pavlovevidence at gmail.com  Wed Oct 17 15:30:01 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 17 Oct 2007 12:30:01 -0700
Subject: linear programming in Python
In-Reply-To: <1192635868.971584.7000@k35g2000prh.googlegroups.com>
References: <1192635868.971584.7000@k35g2000prh.googlegroups.com>
Message-ID: <1192649401.309942.145940@v23g2000prn.googlegroups.com>

On Oct 17, 11:44 am, jivelasqu... at gmail.com wrote:
> Hi all,
>
> I'm new to this group so I don't know if this question has been posted
> before, but does anyone knows about linear/integer programming
> routines in Python that are available on the web, more specifically of
> the branch and bound method.


Sciy and Numpy


Scipy has a wrapper for the Minpack, which has a (continuous) linear
programming solver.

I don't recall if there's an integer programming solver in there,
though.  Even if there isn't, Python has some very good tools for
wrapping Fortran and some C numerical routines.  The F2PY package,
which is part of Numpy, does this.


Carl Banks



From aisaac at american.edu  Mon Oct 29 12:05:16 2007
From: aisaac at american.edu (Alan Isaac)
Date: Mon, 29 Oct 2007 16:05:16 GMT
Subject: simple try/except question
In-Reply-To: <mailman.586.1193673457.13605.python-list@python.org>
References: <xfnVi.9506$aJ3.5968@trnddc02>
	<mailman.586.1193673457.13605.python-list@python.org>
Message-ID: <472605F0.5070909@american.edu>

Tim Chase wrote:
> It works for me(tm)...
> Python 2.4.3

Sorry to have left out that detail.
Yes, it works for me in Python 2.4,
but not in 2.5.1.

The code I posted was copyied from the interpreter.

Alan Isaac


From lasses_weil at klapptsowieso.net  Wed Oct 24 18:48:09 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 25 Oct 2007 00:48:09 +0200
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <mailman.418.1193243124.13605.python-list@python.org>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>	<471afd4c.179297746@news.readfreenews.net>	<1192972158.250126.203980@v23g2000prn.googlegroups.com>	<471b6714$0$90276$14726298@news.sunsite.dk>	<1192981349.181197.308610@q5g2000prf.googlegroups.com>	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>	<1193037849.011136.282480@y27g2000pre.googlegroups.com>	<1193057430.359962.68820@v29g2000prd.googlegroups.com>	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>	<O7Sdnegv-qzkUIHanZ2dnUVZ_tWtnZ2d@comcast.com>
	<mailman.418.1193243124.13605.python-list@python.org>
Message-ID: <471fcba9$0$13110$9b4e6d93@newsspool2.arcor-online.net>

Byung-Hee HWANG wrote:
> On Mon, 2007-10-22 at 12:19 -0400, Lew wrote:
> [something attackish]
> 
> Well, you are making a personal attack, it's dangerous. I wish to see
> only discussions about TeX ;;
> 

On a python group?

Also: Lew won't see your post, he's on c.l.java.*

/W


From adam.donahue at gmail.com  Thu Oct 25 15:03:13 2007
From: adam.donahue at gmail.com (Adam Donahue)
Date: Thu, 25 Oct 2007 19:03:13 -0000
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <4720c5c3$0$20084$426a74cc@news.free.fr>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
	<4720c5c3$0$20084$426a74cc@news.free.fr>
Message-ID: <1193338993.100383.191300@o80g2000hse.googlegroups.com>

Bruno,

I appreciate your attempt to answer my questions below, although I
think my main point was lost amongst all your commentary and
assumptions.  :^)      I'm not inexperienced, but I take the blame for
the rambling initial post, though, which probably lead to the
confusion.

So let me be more direct:

>From reading it seems that, indeed, __getattribute__ handles calling
attribute.__get__( obj, type(obj ), which does the binding of the
attribute to the object.

That is:

<thingy>.<attribute>

in turn is a call to

<thingy>.__getattribute__( '<attribute>' )    <1>

The default body of __getattribute__ in turn fetches the associated
value (by traversing the class hierarchy if necessary) and examines
its type in order to determine what to return.

Let's assume the ultimate value associated with the attribute (key) is
v.

If type(v) is a function, __getattribute__ returns
v.__get__( <thingy>, type( <thingy> )
If type(v) is, say, an integer, __getattribute__ returns v unmolested.

And so forth.

So:
>>> class X( object ):
...     a = 1
...     class b( object ): pass
...     def c( self ): pass
...
>>> X.a
1
>>> X.b
<class '__main__.b'>
>>> X.c
<unbound method X.c>
>>> x = X()
>>> x.a
1
>>> x.b
<class '__main__.b'>
>>> x.c
<bound method X.c of <__main__.X object at 0x81b2b4c>>

If my interpretation is correct, the X.c's __getattribute__ call knows
the attribute reference is via a class, and thus returns an unbound
method (though it does convert the value to a method).  Likewise,
x.c's __getattribute__ returns the value as a method bound to the x
instance.

How does __getattribute__ knows the calling context.  Its first
argument is the attribute name from what I can tell, not the object
calling it.

Is this correct so far?

Moving on to __get__.  Assume:

class X( object ):
    def foo(self):
        print `self`
x = X()

Then:

x.foo()

Is similar (perhaps the same as) to:

X.foo.__get__( x, X )()

(__getattribute__ performs the transformation automatically when one
references via the . operator.)

And so one can do:

>>> class X( object ):
...     x = 1
...
>>> def set_x( self, x ): self.x = x
...
>>> x = X()
>>> set_x.__get__( x, X )( 5 )
>>> x.x
5

The logical next question then is how does one best add a new method
to this class so that future references to x.set_x() and X.set_x will
properly resolve?  It seems the answer would be to somehow add to
X.__dict__ a new value, with key 'set_x', value the function set_x.
>From there on the . operator I assume would perform the binding to X
or x as needed on-the-fly.

Adam



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 17:46:26 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 22:46:26 +0100
Subject: Metaclass vs Class factory
In-Reply-To: <1193779700.135285.239400@22g2000hsm.googlegroups.com>
References: <1193779700.135285.239400@22g2000hsm.googlegroups.com>
Message-ID: <4727a65f$0$19672$426a74cc@news.free.fr>

lbolognini at gmail.com a ?crit :
> Hi all,
> 
> I dare risk my brain exploding by reaching for the understanding of
> metaclasses.
> 
> At first i thought i almost got them, even if vaguely back in a corner
> of my mind, my understanding was that, as classes' class a metaclass
> would be able to return a different class based on input...
> 
> ... until i thought of factory functions and, Python considering
> classes just another first-class object, as such i started considering
> them.
> 
> So is anybody experienced in the dark side semantics of Python willing
> to explain the difference, in simple terms, between a metaclass and a
> function that returns a class?

The same as the difference between a class and a function that returns 
an instance.

One of the main use of metaclasses it to allow "postprocessing" of the 
class object - ie, to automatically add extra features to a class, 
usually based on the class definition. This is mostly useful for 
framework stuff, where it can avoids quite a lot of boilerplate. IOW, 
the 'input' of a metaclass is often the class object itself. The 
metaclass constructor (I mean the proper constructor, __new__) let you 
play with the class bases and attributes before the class object is 
instanciated, and the initializer (__init__) let you modify the class 
object after instanciation.

You can of course use the metaclass constructor as a class factory 
(which it is), but it's obviously overkill if all you need is to 
dynamically 'select' a class based on either inputs and/or environment 
(configuration, platform, whatnot).

HTH


From byte8bits at gmail.com  Thu Oct  4 15:02:32 2007
From: byte8bits at gmail.com (brad)
Date: Thu, 04 Oct 2007 15:02:32 -0400
Subject: unit testing
Message-ID: <fe3dcd$8s2$1@solaris.cc.vt.edu>

Does anyone else feel that unittesting is too much work? Not in general, 
just the official unittest module for small to medium sized projects?

It seems easier to write some quick methods that are used when needed 
rather than building a program with integrated unittesting. I see the 
value of it (the official unittest that is)... especially when there's a 
lot of source code. But this...

if len(x) != y:
    sys.exit('...')

is a hell of a lot easier and quicker that subclassing unittest.TestCase 
on small projects :)

Do others do their own "informal" unit testing?

Just curious,

Brad


From sbellon at sbellon.de  Mon Oct 22 11:09:07 2007
From: sbellon at sbellon.de (Stefan Bellon)
Date: Mon, 22 Oct 2007 17:09:07 +0200
Subject: Building sparc64 32/64-bit Python
References: <20071022165459.476c7a07@cube.tz.axivion.com>
	<5o3sbgFl2g0hU1@mid.uni-berlin.de>
Message-ID: <20071022170907.45127141@cube.tz.axivion.com>

On Mon, 22 Oct, Diez B. Roggisch wrote:
> Stefan Bellon wrote:

> > I can successfully build a 32-bit version in one directory and a
> > 64-bit version in another directory. What I'd like to do is to
> > build a version that has the 64-bit library in a sparcv9 directory
> > but shares the other Python libraries that are ELF-code independent.
> > 
> > Is this possible or do I really have to install two complete but
> > separate Pythons although most of the files are the same?
> 
> It should be possible to create a independent site-packages directory
> that contains the python-library and then tinker with both
> installations setting that directory as part of the python-path (look
> at *pth-files in the site-packages directory to get an idea how that
> works)

Well, I didn't want to to tinker with installation files. I hoped that
there was a way to configure it accordingly.

> Another question is if that's advisable. It certainly won't become
> part of the standard installation scripts, and in the end you save
> how much - 8MB or so?

I thought it would be a "more correct" way of installing it. GCC (and
others) install their libraries in prefix/lib and prefix/lib/sparcv9 as
well without needing two separate installations, therefore I was
wondering whether the same can be achieved with Python.

But if this is not possible, then I'll just go for python and python64
as separated installations.

-- 
Stefan Bellon


From steve at holdenweb.com  Wed Oct  3 16:29:22 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 16:29:22 -0400
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <Xns99BED1C4FA1CFduncanbooth@127.0.0.1>
References: <4703dfff$0$30966$426a74cc@news.free.fr>	<1191439792.666146.217150@d55g2000hsg.googlegroups.com>
	<Xns99BED1C4FA1CFduncanbooth@127.0.0.1>
Message-ID: <fe0u30$r7t$2@sea.gmane.org>

Duncan Booth wrote:
> timaranz at gmail.com wrote:
> 
>> On Oct 4, 7:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
>> point... at invalid.org> wrote:
>>> Hi,
>>> I'am very newbie in Python.
>>> For the moment I'am trying to convert an unicode character to his
>>> uppercase unaccented character.
>>> By example with locale fr_FR:
>>> a,A,?,? should return A
>>> o,O,?,? should return O
>>> ?,? should return ?
>>> i,I,?,? should return I
>>>
>>> Have you some suggestions ?
>>>
>>> Thank.
>> Unicode strings have an upper() method - try that.  I'm think it
>> should work properly with your locale - it doesn't give the expected
>> result for me with an english locale.
>>
> No, that will uppercase the string, but it doesn't (and shouldn't) strip 
> the accents:
> 
I can agree that is doesn't (though I am taking your word for it), but a 
French person will definitely feel it's doing the wrong thing. Upper 
case letters aren't accented in written French.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From nachogomez at gmail.com  Wed Oct 17 17:11:10 2007
From: nachogomez at gmail.com (=?UTF-8?Q?Ra=C3=BAl_G=C3=B3mez_C.?=)
Date: Wed, 17 Oct 2007 17:11:10 -0400
Subject: Bidirectional communication over unix socket (named pipe)
Message-ID: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>

Hi Jeffrey,

I've been reading the Python mailing list and I've found a post of you about
Unix socket with Python, you've found the answer to you're problem by your
self, but I wonder if you still has the working code and if you would share
it?

Thanks!...

Raul


On *Wed Mar 8 18:11:11 CET 2006, **J Rice* rice.jeffrey at
gmail.com<python-list%40python.org?Subject=Bidirectional%20communication%20over%20unix%20socket%20%28named%20pipe%29&In-Reply-To=1141836504.118212.173060%40z34g2000cwc.googlegroups.com>wrote:

> OK, never fails that I find a solution once I post a problem.
> If I use a stream rather than a datagram, it seems to work fine.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/df1d1881/attachment.html>

From dstromberglists at gmail.com  Thu Oct 11 12:02:37 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Thu, 11 Oct 2007 09:02:37 -0700
Subject: Finding Peoples' Names in Files
References: <felf4g$q8c$1@solaris.cc.vt.edu>
Message-ID: <pan.2007.10.11.16.02.37.688549@gmail.com>

On Thu, 11 Oct 2007 11:22:50 -0400, brad wrote:

> Crazy question, but has anyone attempted this or seen Python code that 
> does? For example, if a text file contained 'Guido' and or 'Robert' and 
> or 'Susan', then we should return True, otherwise return False.

It'll be hard to handle the Dweezil's and Moon Unit's of the world (I
believe these are Frank Zappa's kids?), but you could compile a list of
reasonably common names by gaining access to a usenet news spool, and
pulling the names from the headers.

But then this is starting to sound dangerously like a spam campaign - in
which case, "Please don't!".




From mail at gedankenkonstrukt.de  Mon Oct 15 14:52:11 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Mon, 15 Oct 2007 20:52:11 +0200
Subject: Automatically organize module imports
Message-ID: <ff0css$qjc$1@newsreader2.netcologne.de>

Hi!

Is there any possibility/tool to automatically organize the imports at
the beginning of a module?

I don't mean automatic imports like autoimp does as I like seeing where
my objects/functions really come from.
For the same reason I don't like "from foo import *".

The downside is that you have a rather verbose import section at the
beginning of your code.
That's very bad if you reorganize your code and some imports are not
needed anymore or new imports are needed.
In Eclipse/Java there is a nice feature that automatically organizes
your imports, meaning that it removes unneded imports and even adds
missing imports automatically.

Unfortunately, this PyDev doesn't have an equally powerful feature.
As of the current version it only sorts the imports alphabetically, what
isn't very useful.

So, is there anything I can do about my imports?
Is there a tool that can organize my import section?
Shall I fall back to ambiguous imports like *?
Shall I write out the module name for every class/function that I use
(quite unhandy)?

Thank you!
-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From gagsl-py2 at yahoo.com.ar  Tue Oct  2 23:12:28 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 00:12:28 -0300
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
	<1191301175.225114.283340@50g2000hsm.googlegroups.com>
Message-ID: <op.tzlpu2mhx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 02 Oct 2007 01:59:35 -0300, mensanator at aol.com  
<mensanator at aol.com> escribi?:

> How does gmpy make the conversion from float to rational?

Well, you know, these days valuable software usually comes with something  
people call "documentation". Incomprehensible documents in strange formats  
talking about esoteric stuff that nobody is able to read (as if someone  
wanted to actually read them!).
Hidden in the land of Mordor where the shadows lie, there is an ancient  
scroll -a long time forgotten by mankind- where you can read terrible  
things like this:

"If an mpf or float argument is passed, the
mpq is built from it with an 'optimal' approach based on a
Stern-Brocot tree." <http://gmpy.googlecode.com/svn/trunk/doc/gmpydoc.txt>

On the motivation for doing such evil things, you can read the explanation  
given centuries ago by its creator, by then the High Wizard Alessandro:

"[The algorithm tries] to convert floats to rationals
giving the smallest denominator compatible with the hypothesis that
the float is precise to N bits [...] usually DBL_MANT_BITS [...] normally  
53 today"

<http://mail.python.org/pipermail/python-list/2002-October/166974.html>

-- 
Gabriel Genellina



From aaron.watters at gmail.com  Thu Oct 11 13:29:46 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Thu, 11 Oct 2007 10:29:46 -0700
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <7xlka9629c.fsf@ruckus.brouhaha.com>
References: <mailman.59.1192065699.927.python-list@python.org>
	<7xtzoynm64.fsf@ruckus.brouhaha.com>
	<1192108745.766895.156050@19g2000hsx.googlegroups.com>
	<7xlka9629c.fsf@ruckus.brouhaha.com>
Message-ID: <1192123786.851903.102830@v3g2000hsg.googlegroups.com>

regarding http://nucular.sourceforge.net

On Oct 11, 12:32 pm, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
>
> How many items did each query return?  When I refer to large result
> sets, I mean you often get queries that return 10k items or more (a
> pretty small number: typing "python" into google gets almost 30
> million hits) and you need to actually examine each item, as opposed
> to displaying ten at a time or something like that (e.g. you want to
> present faceted results).

I can't give a detailed report.  I think 10k result sets were
not unusual or noticably slower.  Of the online demos, looking at

http://www.xfeedme.com/nucular/gut.py/go?FREETEXT=w

(w for "web") we get 6294 entries which takes about 500ms on
a cold index and about 150ms on a warm index.  This is on a very
active shared hosting machine.

You are right that you might want to
use more in-process memory for a really smart, multi-faceted relevance
ordering or whatever, but you have to be willing to pay for it
in terms of system resources, config/development time, etcetera.
If you want cheap and easy, nucular might be good enough, afaik.

Regarding the 30 million number -- I bet google does
estimations and culling of some kind (not really looking at all 10M).
I'm pretty sure of this because in some cases I've looked at all
results available and it turned out to be a lot smaller than the
estimate on the first page.
I'm not interested in really addressing the "google" size of data set
at the moment.

>  http://www.newegg.com/Product/Product.aspx?Item=N82E16820147021

holy rusty metal batman! way-cool!

thanks,  -- Aaron Watters

===
less is more



From marco at sferacarta.com  Tue Oct 23 06:55:04 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Tue, 23 Oct 2007 12:55:04 +0200
Subject: Iteration for Factorials
In-Reply-To: <mailman.349.1193092818.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<Xns99D18CCFC2430duncanbooth@127.0.0.1>	<1193075845.148527.80820@k35g2000prh.googlegroups.com>	<87bqarov3n.fsf@rudin.co.uk>	<1193080349.610343.95430@v23g2000prn.googlegroups.com>	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>	<mailman.344.1193084287.13605.python-list@python.org>	<1193089836.219692.117420@q5g2000prf.googlegroups.com>
	<mailman.349.1193092818.13605.python-list@python.org>
Message-ID: <cqkTi.977$BB6.524@tornado.fastwebnet.it>

Tim Chase wrote:

>>>> fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or not
> i and 1 or None
> 
> Stunts like this would get a person fired around here if they
> were found in production code :)

eheh, indeed.


def fact(n):
     try:
         return eval('*'.join(str(x) for x in range(1,n+1)))
     except:
         return 1


From Scott.Daniels at Acm.Org  Fri Oct 19 22:24:30 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Fri, 19 Oct 2007 19:24:30 -0700
Subject: where do I need to "tab"?
In-Reply-To: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
References: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
Message-ID: <13hipiq5fafqn8d@corp.supernews.com>

narutocanada at gmail.com wrote:
> I'm following the python's translation of SICP:
> http://codepoetics.com/wiki/index.php?title=Topics:SICP_in_other_languages:Python:Chapter_1
> ...
OK, you have a mix of Python 3,0 and current (2.5.1) Python.

> a = 3
> b = a + 1
Fine in all
> print a + b + (a * b)
Fine in all but 3.0
For 3.0, print becomes a function:
     print(a + b + (a * b))
> print (a == b)
Fine in all
> print b if ((b > a) and (b < (a * b))) else a
Fine in 2.6, which isn't really out yet.
Before 2.6:
     print (a, b)[b > a and b < a * b]
2.6 (actually yours should work in 2.6) and 3.0:
     print(b if b > a and b < a * b else a)


From adonisv at REMOVETHISearthlink.net  Wed Oct 17 19:50:20 2007
From: adonisv at REMOVETHISearthlink.net (Adonis Vargas)
Date: Wed, 17 Oct 2007 19:50:20 -0400
Subject: Async XMLRPC and job processing
In-Reply-To: <1192654406.010168.205960@q3g2000prf.googlegroups.com>
References: <1192654406.010168.205960@q3g2000prf.googlegroups.com>
Message-ID: <13hd7u27t6tt887@corp.supernews.com>

Sean Davis wrote:
> I would like to set up a server that takes XMLRPC requests and
> processes them asynchronously.  The XMLRPC server part is trivial in
> python.  The job processing part is the part that I am having trouble
> with.  I have been looking at how to use threadpool, but I can't see
> how to get that working.  I would like to have the XMLRPC part of
> things do something like:
> 
> def method1(a,b,c):
>     jobid=workRequest(long_method1,[a,b,c])
>     return(jobid)
> 
> def method2(a,b,c):
>     jobid=workRequest(long_method2,[a,b,c])
>     return(jobid)
> 
> def long_method1(a,b,c)
>     do lots of heavy computation, etc.
>     store results in files in a given directory, etc
>     return result
> 
> .... for any number of methods
> 
> Again, pretty straightforward.  However, I run into problems with the
> threadpool and xmlrpc server both waiting.  In particular, if I do
> something like:
> 
> server = SimpleXMLRPCServer.SimpleXMLRPCServer(.....)
> server.serve_forever()
> 
> Where can tell the threadpool that I have set up to wait
> indefinitely?  Both are blocking.
> 
> Thanks,
> Sean
> 

This site shows how to make it multi-threaded:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/425043

But now you have to contend with the integrity of your data, provided 
your going be storing data through these processes. You may want to look 
into the Queue module to create a sort of message queue so your data can 
be properly synchronized.

Hope this helps.

Adonis


From ptmcg at austin.rr.com  Sun Oct 14 13:08:55 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Sun, 14 Oct 2007 10:08:55 -0700
Subject: Last iteration?
In-Reply-To: <1192359522.623770.257380@e9g2000prf.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<1192345242.025455.294870@i13g2000prf.googlegroups.com>
	<1192359522.623770.257380@e9g2000prf.googlegroups.com>
Message-ID: <1192381735.748277.267510@e34g2000pro.googlegroups.com>

On Oct 14, 5:58 am, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 14, 8:00 am, Paul McGuire <pt... at austin.rr.com> wrote:
> > def signal_last(lst):
> >     last2 = None
> >     it = iter(lst)
> >     try:
> >         last = it.next()
> >     except StopIteration:
> >         last = None
> >     for last2 in it:
> >         yield False, last
> >         last = last2
> >     yield True, last
>
> This yields a value when the iterator is empty, which Diez's solution
> didn't. Logically, there is no 'last' element in an empty sequence,
> and it's obscure to add one. Peter Otten's improvement to Diez's code
> looks the best to me: simple, readable and correct.
>

Of course!  For some reason I thought I was improving Peter Otten's
version, but when I modified my submission to behave as you stated, I
ended right back with what Peter had submitted.  Agreed - nice and
neat!

-- Paul




From MrJean1 at gmail.com  Tue Oct 30 13:23:45 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Tue, 30 Oct 2007 17:23:45 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193764526.526065.274250@t8g2000prg.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
	<1193764526.526065.274250@t8g2000prg.googlegroups.com>
Message-ID: <1193765025.217945.51510@e9g2000prf.googlegroups.com>

On final comment.  For 64-bit usage, Python 2.5.1 is the better
choice.

More on that here <http://docs.python.org/whatsnew/pep-353.html>.

/Jean Brouwers


 On Oct 30, 10:15 am, MrJean1 <MrJe... at gmail.com> wrote:
> Building 64-bit Python 2.4.4 on Solaris 10 and SUC C/C++ using the
> instructions from
>
>   <http://ccnuma.anu.edu.au/~wpc/blog/programming/building-
> python.html>
>
> worked just fine on Ultra 20 Opteron machine.  The test result summary
> is below.
>
> /Jean Brouwers
>
> ....
> 249 tests OK.
> 2 tests failed:
>     test_cmath test_pty
> 40 tests skipped:
>     test_aepack test_al test_applesingle test_bsddb test_bsddb185
>     test_bsddb3 test_bz2 test_cd test_cl test_codecmaps_cn
>     test_codecmaps_hk test_codecmaps_jp test_codecmaps_kr
>     test_codecmaps_tw test_crypt test_curses test_dl test_gdbm test_gl
>     test_imageop test_imgfile test_linuxaudiodev test_macfs
>     test_macostools test_nis test_normalization test_ossaudiodev
>     test_pep277 test_plistlib test_rgbimg test_scriptpackages
>     test_socket_ssl test_socketserver test_tcl test_timeout
>     test_unicode_file test_urllib2net test_urllibnet test_winreg
>     test_winsound
> 5 skips unexpected on sunos5:
>     test_tcl test_bz2 test_crypt test_dl test_nis
>
> plumb and tree wrote:
> > I've been trying for days to build 64 bit python with Solaris 10 + Sun
> > Studio 12.
>
> > Can anyone helpl please.




From adam at atlas.st  Sat Oct 13 21:23:41 2007
From: adam at atlas.st (Adam Atlas)
Date: Sat, 13 Oct 2007 18:23:41 -0700
Subject: Python on imac
In-Reply-To: <8ocQi.24253$054.21605@newsfe14.phx>
References: <8ocQi.24253$054.21605@newsfe14.phx>
Message-ID: <1192325021.164284.202230@t8g2000prg.googlegroups.com>

On Oct 13, 7:21 pm, John Velman <vel... at cox.net> wrote:
> I'm considering moving from Linux to imac.   I've recently returned to
> Python (was never very expert) to develop a small gui application.  At
> present I plan to use PyGTK with Pango and Cairo.
>
> What surprises may I be in for :-)
>
> (Currently using slackware 11.0 on an old (8 years) slow (400mhz) machine.)
>
> Thanks,
>
> John Velman

Well... I think OS X currently comes with Python 2.3 or 2.4. I
recommend getting Fink (fink.sourceforge.net), which is basically a
DPKG/APT repository for OS X plus an added system for automatically
building packages from source. It'll keep the system up to date with
the latest 2.5 release (and future versions).

If you're using PyGTK, you will need to install Apple X11 (can't
remember if it's installed by default yet), since OS X's window
manager is not X11-based. Fink can also install GTK+, etc. for you.
Other than that, most things should work as on Linux, more or less.



From f.guerrieri at gmail.com  Tue Oct 16 09:50:35 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Tue, 16 Oct 2007 15:50:35 +0200
Subject: while statements
In-Reply-To: <1192542112.711284.51530@z24g2000prh.googlegroups.com>
References: <mailman.62.1192541292.13605.python-list@python.org>
	<1192542112.711284.51530@z24g2000prh.googlegroups.com>
Message-ID: <79b79e730710160650m26fe8eb2r27cbd7341518812a@mail.gmail.com>

On 10/16/07, danfolkes <danfolkes at gmail.com> wrote:

> Instead of: if(cal<=0)
>
> you could do :
> cal=0
> while cal<=0:
>     cal = int(raw_input("Please enter the number of calories in your
> food: "))
>
> that would make sure that your input is > 0

Calories could be non integer :)

francesco


From ensiferum_ at hotmail.com  Thu Oct 18 18:48:51 2007
From: ensiferum_ at hotmail.com (Sami Vaisanen)
Date: Fri, 19 Oct 2007 01:48:51 +0300
Subject: Getting error message/trace over the C API
References: <pan.2007.10.16.17.06.22.42783@hotmail.com>
	<Xns99CBCAA67CC16duncanbooth@127.0.0.1>
Message-ID: <pan.2007.10.18.22.48.51.658296@hotmail.com>

On Tue, 16 Oct 2007 18:55:22 +0000, Duncan Booth wrote:

> Sami Vaisanen <ensiferum_ at hotmail.com> wrote:
> 
>> Hello group,
>>  
>> I'm writing a C++ based application that embeds the python engine. Now I
>> have a problem regarding exception/error information. Is there a way to
>> get the exception message and possibly the traceback into a string for
>> example? I've been eyeballing the PyErr_ module and it seems fairly
>> limited. In other words PyErr_Print() calls the right functions for
>> getting the exception information but unfortunately it is hardwired to
>> print this data directly into sys.stderr, and for an embedded application
>> this is completely inappropriate. 
>>  
>>  
>> Please advice how to do this.
>> 
> All you have to do is call whatever functions you would call from Python. 
> e.g. from C you need to import traceback, then call getattr to get the 
> appropriate function (e.g. format_exc or format_exception), then just call 
> it.



void get_python_exception(string& message, string& traceback)
{
    GIL g;
 
    PyObject* type  = NULL;
    PyObject* value = NULL;
    PyObject* trace = NULL;
 
    PyErr_Fetch(&type, &value, &trace);
 
    py_ref ref_type(type);
    py_ref ref_value(value);
    py_ref ref_trace(trace);
 
    py_ref name(PyString_FromString("traceback"));
    py_ref module(PyImport_Import(name.get()));
    if (module)
    {
        py_ref fun(PyObject_GetAttrString(module.get(), "format_exc"));
        if (fun)
        {
            PyErr_Restore(type, value, trace);
            ref_type.release();
            ref_value.release();
            ref_trace.release();
 
            py_ref ret(PyObject_CallObject(fun.get(), NULL));
            if (ret && PyString_Check(ret.get()))
            {
                char* str = PyString_AsString(ret.get());
                message = str;
                traceback = "traceback not available";
                return;
            }
        }
    }
    message   = "message not available";
    traceback = "traceback not available";
}

str evaluates to "None", any ideas what gives here? I've also tried to
call the traceback with a different function, such as
PyObject_CallFunctionObjArgs but the result is still same.

Thanks







From see.signature at no.spam  Fri Oct  5 08:30:24 2007
From: see.signature at no.spam (Eric Brunel)
Date: Fri, 05 Oct 2007 14:30:24 +0200
Subject: tkinter question
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
	<op.tzpugxp2wepdt4@ericb.pragmadev>
	<470629D1.2040404@codebykevin.com>
Message-ID: <op.tzp40yrqwepdt4@ericb.pragmadev>

On Fri, 05 Oct 2007 14:10:57 +0200, Kevin Walzer <kw at codebykevin.com>  
wrote:
> "expand = 1" ==  "expand=TRUE"--that means the widget resizes itself  
> when the window is re-sized.

That's the theory... But what does fill=BOTH means then? And why does  
expand=1 (or TRUE, or True) is only needed in some cases and not others?  
And I'm quite sure that sometimes, I use expand=1 and it does exactly what  
I don't want, and removing it gives the behaviour I want. I've been doing  
tk/Tkinter stuff for quite a few years now, and I still haven't understood  
exactly when I should use this option... Quite counter-intuitive, IMHO.

But then, since I almost never use pack for this kind of layout, I guess  
it's not really important...
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From deets at nospam.web.de  Sat Oct 13 12:44:58 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 13 Oct 2007 18:44:58 +0200
Subject: Cross-platform GUI development
In-Reply-To: <mailman.165.1192269333.927.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>	<mailman.159.1192260728.927.python-list@python.org>	<as0Qi.8294$UN.1208@newsfe24.lga>
	<mailman.165.1192269333.927.python-list@python.org>
Message-ID: <5ncb0gFhliojU2@mid.uni-berlin.de>

David Tremouilles schrieb:
> No issue with pygtk on mac!
> Actually I develop on this platform everyday. Macport take care of the
> installation for me http://www.macports.org/ (Fink should do the work
> too).
> Of course native GTK on OSX could be nice but definitely not needed at
> this point in time.

It sure looks crappy in comparison to the rest of the OSX apps - and 
given that with Qt (and of course the brilliant PyObjc-bridge) there 
exist options that look & feel waaay better, I wouldn't consider using GTK.


From spradnyesh at gmail.com  Thu Oct 18 23:21:55 2007
From: spradnyesh at gmail.com (Pradnyesh Sawant)
Date: Fri, 19 Oct 2007 08:51:55 +0530
Subject: problem with eric
Message-ID: <20071019032155.GA4081@debian>

Hello,
I have the following single line in my .py file:

from PyQt4 import QtCore, QtGui

if i run it from eric, i get the following error:

unhandled RuntimeError
"the PyQt4.QtCore and qt modules both wrap the QObject class"

i think that eric is probably trying to load both Qt3 and Qt4, but i don't 
understand why (i'm explicitly mentioning PyQt4). How do i tell eric to use 
just Qt4, and not Qt3?

ps: i have made both Qt and Qt4 Directory to contain /usr/share/qt4, in 
preferences->qt. but that too does not help.
-- 
warm regards,
Pradnyesh Sawant
--
Computers are to make people happy, not people to make computers happy.
--Gerald Jay Sussman, MIT


From deets at nospam.web.de  Thu Oct 11 11:46:45 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 11 Oct 2007 17:46:45 +0200
Subject: Finding Peoples' Names in Files
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
Message-ID: <5n6ur5FgaphtU1@mid.uni-berlin.de>

brad wrote:

> cokofreedom at gmail.com wrote:
>> On Oct 11, 5:22 pm, brad <byte8b... at gmail.com> wrote:
>>> Crazy question, but has anyone attempted this or seen Python code that
>>> does? For example, if a text file contained 'Guido' and or 'Robert' and
>>> or 'Susan', then we should return True, otherwise return False.
>> 
>> Can't you just use the string function .findall() ?
>> 
> 
> I mean *any* possible person's name... I don't *know* the names
> beforehand :)

Erm, now what's a persons name then? Maybe there is a Viagra Cialis living
in ... Caracas. Or so. Or a Woodshed Ribcage in Oregon... who knows?

And what about variable names - peters_temp a name? It's amazing what lack
of creativity in variable names can result in...

So - unless you come up with positive list of what you consider a name,
you're pretty much out of luck.

diez


From lawsonhanson at optusnet.com.au  Fri Oct  5 03:12:52 2007
From: lawsonhanson at optusnet.com.au (Lawson Hanson)
Date: Fri, 05 Oct 2007 17:12:52 +1000
Subject: Real time plot
In-Reply-To: <mailman.1558.1191563846.2658.python-list@python.org>
References: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM>	<mailman.1493.1191484119.2658.python-list@python.org>	<47051599$0$27367$ba4acef3@news.orange.fr>
	<mailman.1558.1191563846.2658.python-list@python.org>
Message-ID: <4705e3f5$0$31086$afc38c87@news.optusnet.com.au>

Nicholas Bastin wrote:
> On 10/4/07, Jean-Francois Canac <jfcanac at free.fr> wrote:
>> mailman.1493.1191484119.2658.python-list at python.org...
>>> I would draw dots on a suitably sized Tkinter canvas, after drawing a
>>> schematic
>>> of the race track (laborious).
>>>
>>> 20 per second will be no problem, provided the machine is half decent.
>>>
>>> What is the speed at which the com port runs?
>>>
>>> - Hendrik
>>>
>> The com port run at 19.2 kb/s.
>> My pb is more the real time aspect: to see the plot changing in real time
>> than the com aspect as the installation is already running with programs in
>> c++.
>> The PC on which it is running is good enought
>> For me the interest is to migrate all taht on python to be able to make fast
>> changes when it is of interest
> 
> The success of this will have more to do with design than programming
> language.  Any GUI toolkit which allows partial screen updates can be
> made to update at least as fast as your screen refresh rate, even in
> python.
> 
> --
> Nick

If you are using Tkinter (probably a very good choice), just remember
     to make periodic (i.e., once per I/O processing loop) calls to:

     Tkinter.update_idletasks()

which will update the display window, etc.

Regards,

Lawson


From byte8bits at gmail.com  Sun Oct 14 10:49:39 2007
From: byte8bits at gmail.com (byte8bits at gmail.com)
Date: Sun, 14 Oct 2007 14:49:39 -0000
Subject: Python on imac
In-Reply-To: <fes99k$o4$1@daisy.noc.ucla.edu>
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<fes99k$o4$1@daisy.noc.ucla.edu>
Message-ID: <1192373379.657762.112250@v23g2000prn.googlegroups.com>

On Oct 14, 1:27 am, James Stroud <jstr... at mbi.ucla.edu> wrote:

> For OS X 10.4, wx has come as part of the stock python install. You may
> want to consider going that route if you develop exclusively for OS
> X--it will keep the size of your distribution down.
>
> James

wx works well on Macs... Linux and Windows too. I second this
suggestion.



From steve at holdenweb.com  Wed Oct  3 10:17:03 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 10:17:03 -0400
Subject: enumerate overflow
In-Reply-To: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
Message-ID: <fe088s$9b1$1@sea.gmane.org>

crwe at post.cz wrote:
> Hello all,
> 
> in python2.4, i read lines from a file with
> 
> for lineNum, line in enumerate(f): ...
> 
> However, lineNum soon overflows and starts counting backwards. How do
> i force enumerate to return long integer?
> 
Just how "soon" exactly do you read sys.maxint lines from a file? I 
should have thought that it would take a significant amount of time to 
read 2,147,483,647 lines ...

But it is true that Python 2.5 uses an enumobject representation that 
limits the index to a (C) long:

typedef struct {
         PyObject_HEAD
         long      en_index;    /* current index of enumeration */
         PyObject* en_sit;      /* secondary iterator of enumeration */
         PyObject* en_result;   /* result tuple  */
} enumobject;

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From arkanes at gmail.com  Mon Oct  8 15:42:23 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 8 Oct 2007 14:42:23 -0500
Subject: Convert obejct string repr to actual object
In-Reply-To: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>
References: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>
Message-ID: <4866bea60710081242n13b478b3o18d32e73f6261433@mail.gmail.com>

On 10/8/07, Tor Erik S?nvisen <torerik81 at gmail.com> wrote:
> Hi,
>
> I've tried locating some code that can recreate an object from it's
> string representation...
> The object in question is really a dictionary containing other
> dictionaries, lists, unicode strings, floats, ints, None, and
> booleans.
>
> I don't want to use eval, since I can't trust the source sending the
> object.... I'm sure someone must have had the same need and created
> code for it... Maybe Pypy has what I need??? Haven't looked though...
>
> Regards,
> Tor Erik
>
> PS: The string repr is created by a server outside of my control...
> --


You'll need to write your own parser. PyParsing has an example that
can parse much of the Python syntax, you can probably extract the
object-literal parts of that and use it as a base for your
implementation.


From jstroud at mbi.ucla.edu  Thu Oct 11 19:19:00 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 11 Oct 2007 16:19:00 -0700
Subject: decorating container types (Python 2.4)
In-Reply-To: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
References: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
Message-ID: <femava$i4b$1@daisy.noc.ucla.edu>

timaranz at gmail.com wrote:
> Hi,
> 
> I have a container class A and I want to add functionality to it by
> using a decorator class B, as follows:
> 
> class A(object):
>     def __len__(self):
>         return 5
> 
> class B(object):
>     def __init__(self, a):
>         self._a = a
> 
>     def __getattr__(self, attr):
>         return getattr(self._a, attr)
> 
>     def other_methods(self):
>         blah blah blah
> 
> I was expecting len(B) to return 5 but I get
> AttributeError: type object 'B' has no attribute '__len__'
> instead.
> I was expecting len() to call B.__len__() which would invoke
> B.__getattr__ to call A.__len__ but __getattr__ is not being called.
> I can work around this, but I am curious if anyone knows _why_
> __getattr__ is not being called in this situation.
> 
> Thanks
> Tim
> 

The why part is that __len__ is an unbound method of the class, not an 
unbound method of the class's metaclass. Also, your code above makes 
absolutely no association between classes A and B, which is the most 
fundamental reason.

James

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

http://www.jamesstroud.com


From limodou at gmail.com  Tue Oct 23 03:05:20 2007
From: limodou at gmail.com (limodou)
Date: Tue, 23 Oct 2007 15:05:20 +0800
Subject: ignoring chinese characters parsing xml file
In-Reply-To: <851acc320710221224w55c9421cpf1973d0658ad84b4@mail.gmail.com>
References: <851acc320710221224w55c9421cpf1973d0658ad84b4@mail.gmail.com>
Message-ID: <505f13c0710230005v267df70ax2b57bb367bf02793@mail.gmail.com>

On 10/23/07, Fabian L??pez <fabian at syameses.com> wrote:
> Hi,
> I am parsing an XML file that includes chineses characters, like
> ^?u?u?????????w.?????L???????? or ????????????... The problem is that I get an error like:
> UnicodeEncodeerror:'charmap' codec can't encode characters in position....
> The thing is that I would like to ignore it and parse all the characters
> less these ones. So, could anyone help me? I suppose that I can catch an
> exception that ignores it or maybe use any function that detects this
> chinese characters and after that ignore them.
>
Sorry, that's not Chinese but Japanese. And I don't know which
encoding is in the source xml, because most of xml files should be
encoded in utf-8, and it'll be ok for CJK characters, and how did you
get this error?

-- 
I like python!
UliPad <<The Python Editor>>: http://code.google.com/p/ulipad/
meide <<wxPython UI module>>: http://code.google.com/p/meide/
My Blog: http://www.donews.net/limodou

From gregturn at mindspring.com  Thu Oct 11 09:25:38 2007
From: gregturn at mindspring.com (Goldfish)
Date: Thu, 11 Oct 2007 06:25:38 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <1192044076.090824.133360@o3g2000hsb.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<1192044076.090824.133360@o3g2000hsb.googlegroups.com>
Message-ID: <1192109138.907631.134890@r29g2000hsg.googlegroups.com>

Don't forget to write test cases. If you have a series of addresses,
and confirm they are parsed correctly, you are in a good position to
refine the pattern. You will instantly know if a change in pattern has
broken another pattern.

The reason I'm saying this, is because I think your pattern is
incomplete. I suggest you add a test case for the following street
address:

221B Baker Street

That is a real address in London (only Sherlock Holmes) was fiction. I
know it, because I actually visited the location. Can you address
matching pattern handle that? Just don't break other address
recognition test cases while fixing things.



From tim.arnold at sas.com  Fri Oct 26 13:15:30 2007
From: tim.arnold at sas.com (Tim Arnold)
Date: Fri, 26 Oct 2007 13:15:30 -0400
Subject: elementtree w/utf8
References: <ffr11p$unf$1@foggy.unx.sas.com> <5ocgedFm1hl5U5@mid.uni-berlin.de>
Message-ID: <fft7bj$uoh$1@foggy.unx.sas.com>


"Marc 'BlackJack' Rintsch" <bj_666 at gmx.net> wrote in message 
news:5ocgedFm1hl5U5 at mid.uni-berlin.de...
> On Thu, 25 Oct 2007 17:15:36 -0400, Tim Arnold wrote:
>
>> Hi, I'm getting the by-now-familiar error:
>> return codecs.charmap_decode(input,errors,decoding_map)
>> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa9' in 
>> position
>> 4615: ordinal not in range(128)
>>
>> the html file I'm working with is in utf-8, I open it with codecs, try to
>> feed it to TidyHTMLTreeBuilder, but no luck. Here's my code:
>> from elementtree import ElementTree as ET
>> from elementtidy import TidyHTMLTreeBuilder
>>
>>             fd = codecs.open(htmfile,encoding='utf-8')
>>             tidyTree =
>> TidyHTMLTreeBuilder.TidyHTMLTreeBuilder(encoding='utf-8')
>>             tidyTree.feed(fd.read())
>>             self.tree = tidyTree.close()
>>             fd.close()
>>
>> what am I doing wrong? Thanks in advance.
>
> You feed decoded data to `TidyHTMLTreeBuilder`.  As the `encoding`
> argument suggests this class wants bytes not unicode.  Decoding twice
> doesn't work.
>
> Ciao,
> Marc 'BlackJack' Rintsch

well now that you say it, it seems so obvious...
some day I will get the hang of this encode/decode stuff. When I read about 
it, I'm fine, it makes sense, etc. maybe even a little boring. And then I 
write stuff like the above!

Thanks to you and Diez for straightening me out.
--Tim




From gagsl-py2 at yahoo.com.ar  Fri Oct 19 19:45:19 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 20:45:19 -0300
Subject: class vs type
References: <mailman.208.1192798489.13605.python-list@python.org>
	<87wstjtfip.fsf@mulj.homelinux.net>
	<ffali6$op5$1@ger.gmane.org> <ffb75c$kl6$1@ger.gmane.org>
	<47193A3B.6020605@sympatico.ca>
Message-ID: <op.t0gxltmcx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 20:14:03 -0300, Colin J. Williams <cjw at sympatico.ca>  
escribi?:

> The Python 3.0 doc, under Class, has:

> Programmer?s note: Variables defined in [...]
> For new-style classes, descriptors can
> be used to create instance variables
> with different implementation details.
>
> Presumably, it is intended that every
> class implicitly inherits from object?

For Python 3.0, yes. Where did you read the above text? The 3.0 docs at
http://docs.python.org/dev/3.0/reference/compound_stmts.html#class-definitions
are already updated and don't menction "new-style classes" at all.

-- 
Gabriel Genellina



From ldo at geek-central.gen.new_zealand  Sun Oct  7 19:31:27 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 08 Oct 2007 12:31:27 +1300
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
	<Xns99C252D1319CElhb123@140.99.99.130>
Message-ID: <febq8f$6ie$1@lust.ihug.co.nz>

In message <Xns99C252D1319CElhb123 at 140.99.99.130>, lhb at nowhere.com wrote:

> For example, a dog with no owner, wandering freely (adverb), would not be
> called a free dog (adjective), to mean possessing freedom.

Yes it would. City council regulations would commonly contain phrases such
as "dogs are not allowed to wander free except in designated areas".

Also, what is your interpretation of "free" in the well-known phrase: "I am
not a number! I am a free man!"?



From deets at nospam.web.de  Mon Oct  8 09:10:54 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 15:10:54 +0200
Subject: Pil image module, "mode" bug..
References: <1191762186.617411.309700@g4g2000hsf.googlegroups.com>
	<pan.2007.10.07.13.47.31.978730@vscht.cz>
	<1191772929.299902.87760@g4g2000hsf.googlegroups.com>
	<pan.2007.10.07.17.17.32.846495@vscht.cz>
	<1191848115.493859.70650@d55g2000hsg.googlegroups.com>
Message-ID: <5muoiuFfdr86U1@mid.uni-berlin.de>

oruccim at gmail.com wrote:

> On Oct 7, 8:17 pm, Michal Bozon <boz... at vscht.cz> wrote:
>> On Sun, 07 Oct 2007 09:02:09 -0700, Abandoned wrote:
>> > On Oct 7, 4:47 pm, Michal Bozon <boz... at vscht.cz> wrote:
>> >> On Sun, 07 Oct 2007 06:03:06 -0700, Abandoned wrote:
>> >> > Hi..
>> >> > I find the picture color with:
>> >> > im=Image.open("/%s" %name)
>> >> > color=im.mode   #p=black & beyaz rgb=color L=grey
>>
>> >> > This usually work true but in these pictures:
>> >> >http://malatya.meb.gov.tr/images/alt/ilsis_logo.gif
>> >> >http://malatya.meb.gov.tr/images/meb.gif
>>
>> >> > Say me P (black&white) but these pictures are color..
>>
>> >> > What is the reason of this ?
>>
>> >> > I'm sorry my bad english
>>
>> >> P does mean palette, black&white is a special case of palette, with
>> >> two colors.
>>
>> > How can i understand the picture color ? (black &white or color or
>> > grey)
>>
>> If you know how to work with RGB images, you can convert the image
>> from the palette mode easily:
>>
>> img2 = img.convert(mode='RGB')
>>
>> Anyway, always is helpful to read the tutorial or basic documentation..
>> ;)
>>
>>  MB- Hide quoted text -
>>
>> - Show quoted text -
> 
> no no no this is not professionalism

What professionalism? This isn't a paid support service, you are aware of
that?

> are there anybody who know that

Who knows what? That PIL has e.g. a histogram-function that delivers what
you need (after some thinking, I suggest you try and see at it's output
with various source images)

Diez


From paul.hankin at gmail.com  Sat Oct 20 10:21:08 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 20 Oct 2007 14:21:08 -0000
Subject: weakref pitfall
In-Reply-To: <1192888078.740427.222640@t8g2000prg.googlegroups.com>
References: <1192888078.740427.222640@t8g2000prg.googlegroups.com>
Message-ID: <1192890068.447688.129180@y27g2000pre.googlegroups.com>

On Oct 20, 2:47 pm, Odalrick <odalr... at hotmail.com> wrote:
> I'm trying to write a simple game and decided I need an eventmanager.
>
> <code>
> import weakref
> from collections import defaultdict
>
> class _EventManager( object ):
>     def __init__( self ):
>         self._handled_events =
> defaultdict( weakref.WeakKeyDictionary )
>
>     def register( self, handler, event_type, filter=None ):
>         self._handled_events[event_type][handler] = filter
>
>     def deregister( self, handler, event_type ):
>         self._handled_events[event_type].pop( handler, None  )
>
>     def handle_event( self, event ):
>         event_type = event.type
>         for handler, filter in
> self._handled_events[event_type].items():
>             if filter == None or filter(event):
>                 handler( event )
>
> eventmanager = _EventManager()
>
> __all__ = [ eventmanager ]
> </code>
>
> Fairly simple, yet there was some strange bug that prevented my game
> from exiting.
>
> I think what happened was that when __init__ ends, self goes out of
> scope, and by extension so does self.handle_quit, Now there are no
> more refeences to self.handle_quit, because weakrefs don't count, and
> the event gets automatically dropped from my eventmanager. I thought
> that wouldn't happen because handle_quit is part of the class and
> instance MainGame.
>
> Am I right in my guess? If so, how should I adress this bug? If not,
> what is the bug?

The next stage in debugging is to think of a test that will prove your
guess right or wrong. I'd remove weakrefs from your event manager and
see if your code starts working.

I'd suggest you're a bit confused about your event manager's API: you
have register/deregister methods and are also using weakrefs to
provide auto-deregistering. I don't know your code, but this looks
like a mistake to me - can you justify (to yourself) that you need
both ways?

--
Paul Hankin



From arkanes at gmail.com  Thu Oct 11 15:43:12 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 11 Oct 2007 14:43:12 -0500
Subject: Finding Peoples' Names in Files
In-Reply-To: <1192122174.084193.298950@v3g2000hsg.googlegroups.com>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>
	<felhv8$18g$1@solaris.cc.vt.edu>
	<1192121372.931784.171120@d55g2000hsg.googlegroups.com>
	<1192122174.084193.298950@v3g2000hsg.googlegroups.com>
Message-ID: <4866bea60710111243g25ed2a0du7c14f23fe8b507a6@mail.gmail.com>

On 10/11/07, byte8bits at gmail.com <byte8bits at gmail.com> wrote:
> On Oct 11, 12:49 pm, Matimus <mccre... at gmail.com> wrote:
> > On Oct 11, 9:11 am, brad <byte8b... at gmail.com> wrote:
> >
> >
> >
> > > cokofree... at gmail.com wrote:
> > > > However...how can you know it is a name...
> >
> > > OK, I admitted in my first post that it was a crazy question, but if one
> > > could find an answer, one would be onto something. Maybe it's not a 100%
> > > answerable question, but I would guess that it is an 80% answerable
> > > question... I just don't know how... yet :)
> >
> > > Besides admitting that it's a crazy question, I should stop and explain
> > > how it would be useful to me at least. Is a credit card number itself
> > > valuable? I would think not. One can easily re and luhn check for credit
> > > card numbers located in files with a great degree of accuracy, but a
> > > number without a name is not very useful to me. So, if one could
> > > associate names to luhn checked numbers automatically, then one would be
> > > onto something. Or at least say, "hey, this file has luhn validated CCs
> > > *AND* it seems to have people's names in it as well." Now then, I'd have
> > > less to review or perhaps as much as I have now, but I could push the
> > > files with numbers and names to the top of the list so that they would
> > > be reviewed first.
> >
> > > Brad
> >
> > What the hell are you doing? Your post sounds to me like you have a
> > huge amount of stolen, or at the very least misapprehended, data. Now
> > you want to search it for credit card numbers and names so that you
> > can use them.
> >
> > I am not cool with this! This is a public forum about a programming
> > language. What makes you think that anybody in this forum will be cool
> > with that. Perhaps you aren't doing anything illegal, but it sure is
> > coming off that way. If you are doing something illegal I hope you get
> > caught.
> >
> > At the very least, you might want to clarify why you are looking for
> > such capability so that you don't get effectively black-listed (well,
> > by me at least).
> >
> > Matt
>
> Go have a beer and calm down a bit :) It's a legitimate purpose,
> although it could (and probably is being used by bad guys right now).
> My intent, as you can see from the links below, is to catch it before
> the bad guys do.
>
> http://filebox.vt.edu/users/rtilley/public/find_ccns/
> http://filebox.vt.edu/users/rtilley/public/find_ssns/
>
> Brad
>

In case you're doing this for PCI validation, be aware that just the
CC number is considered sensitive and you'd get some false negatives
if you filter on anything except that.

Random strings that match CC checksums are really quite rare and false
positives from that alone are unlikely to be a problem. Unless I
deployed this and there was a significant false positive rate I
wouldn't risk the false negatives, personally.


From carsten at uniqsys.com  Mon Oct  1 12:59:28 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 12:59:28 -0400
Subject: Setting value of Python variable in a Python C extension
In-Reply-To: <1191256947.716297.248090@d55g2000hsg.googlegroups.com>
References: <1191254887.206973.115960@r29g2000hsg.googlegroups.com>
	<mailman.1349.1191255983.2658.python-list@python.org>
	<1191256947.716297.248090@d55g2000hsg.googlegroups.com>
Message-ID: <1191257968.3393.40.camel@dot.uniqsys.com>

On Mon, 2007-10-01 at 09:42 -0700, MD wrote:
> Hi Carsten,
>     Thanks for your reply. I am a newbie on Python so your help is
> much appreciated. My program structure is basically like this .....
> (rough representation)
> test.py
>    var1 = ""
>    rc = func1 (var1)
> 
> test.c
>     func1(*v1) {
>     strcpy(v1, "Hello World");
> }
> 
> So basically I want to modify value of "var1" in the function "func1"
> defined in test.c. Is this possible?

No, that requires altering the caller's namespace, which is not
possible. Why do you think you need to do that? Is your problem that
func1 essentially returns two values and you don't know how to achieve
that? In that case, be advised that you can return a tuple to the
caller, along these lines:

test.py
  rc, var1 = func1()

test.c
  func1(void) {
    /* ... */
    return Py_BuildValue("(is)", rc, v1);
    /* I'm assuming 'rc' is an integer, adjust the above line to fit
what rc actually is. */
  }

Also, since you are a newbie, I'd like to suggest you work through the
Python tutorial and learn what you can do in pure Python first before
moving on to the more advanced topic of writing C extensions.

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 11 13:08:37 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 11 Oct 2007 19:08:37 +0200
Subject: Declarative properties
In-Reply-To: <1192117169.037931.285890@g4g2000hsf.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<1192112491.859246.148620@19g2000hsx.googlegroups.com>
	<1192117169.037931.285890@g4g2000hsf.googlegroups.com>
Message-ID: <470e5857$0$535$426a74cc@news.free.fr>

Artur Siekielski a ?crit :
> On Oct 11, 4:21 pm, "sjdevn... at yahoo.com" <sjdevn... at yahoo.com> wrote:
>> In practice, it turns out to be a lot less work to deal with that
>> occasionally than to always deal with lugging around internal
>> attributes and external properties when they're really not needed.  By
>> writing everything as properties up front you're just creating more
>> work for yourself, and it's generally considered bad practice in
>> Python to have default getters/setters (whether part of a property or
>> not).
> 
> Ok, I appreciate your and Marc's argument. So I see that a pythonic
> way is
> using public attributes, and it works in real life.

Indeed !-)

> Automatic
> "generation" of
> getters/setters is a nice thing when using Java style of properties,
> ie. no
> public fields.

Java doesn't have computed attributes, so you have no other choice if 
you want to keep your design flexible. For languages that have computed 
attributes, this is not a problem to use plain attributes until you 
*really* need to do otherwise.

>>> 2. Properties define (a part of) public interface of a class. When
>>> using fields for public
>>> access, you must tell this explicitly in documentation, or use name
>>> convention.
>> Property vs. attribute doesn't make any difference here: both of them
>> are public, and part of the external interface, unless they're named
>> with a leading underscore.
> 
> Nice thing about properites is that they are defined in more
> declarative way -
> in class body. Attributes are "defined" in a piece of code (which can
> be long
> and can contain loops etc.) by assigning a value to 'self'.

Usually, all there is to know is readable in the initializer. And I've 
rarely seen (good) code that defines public attribute elsewehere (i've 
seen such a thing on a couple occasion, and that's bad coding IMHO).

Anyway, since attributes (including methods, class etc...) can be 
added/replaced/deleted by anyone having access to the object at any 
point of the program, using properties won't help that much here IMHO. 
Not that I don't see your point - I also have a taste for declarative 
APIs and readability - but this is enough to justify the use of 
properties IMHO.



From Florian.Lindner at xgm.de  Thu Oct 11 09:14:30 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Thu, 11 Oct 2007 15:14:30 +0200
Subject: Problem with MySQL cursor
Message-ID: <fel7m3$btq$03$1@news.t-online.com>

Hello,
I have a function that executes a SQL statement with MySQLdb:

def executeSQL(sql,  *args):
    print sql % args
    cursor = conn.cursor()
    cursor.execute(sql, args)
    cursor.close()

it's called like that:

    sql = "INSERT INTO %s (%s) VALUES (%s)"
    executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)

The statement that is printed looks ok (missing quotes, but AFAIK
cursor.execute does that):

INSERT INTO domains (domain) VALUES (xgm.de)

but MySQL prints an error:

Traceback (most recent call last):
  File "manage.py", line 90, in ?
    addDomain(domainName)
  File "manage.py", line 27, in addDomain
    executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)
  File "manage.py", line 22, in executeSQL
    cursor.execute(sql, args)
  File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line 163, in
execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line 35,
in defaulterrorhandler
    raise errorclass, errorvalue
_mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL
syntax; check the manual that corresponds to your MySQL server version for
the right syntax to use near ''domains' ('domain') VALUES ('xgm.de')' at
line 1")

I see the error: 2 opening quotes but only 1 closing around domains. But
where do they come from?

Note that there are no quotes at print sql % args.

Thanks,

Florian


From deets at nospam.web.de  Tue Oct  9 11:25:13 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 17:25:13 +0200
Subject: Native class methods
References: <87r6k4iac6.fsf@keizer.soze.com>
Message-ID: <5n1kqpFfoj0eU2@mid.uni-berlin.de>

Stefan Arentz wrote:

> 
> Is there an easy way to implement a specific method of a Python class
> in C? Like a native method in Java? I would really like to do the
> majority of my class code in Python and just do one or two methods
> in C.

ctypes or subclassing C-implemented classes.

Diez


From rowing.golfer at no_spam.virgin.net  Thu Oct 25 11:07:53 2007
From: rowing.golfer at no_spam.virgin.net (Neil Wallace)
Date: Thu, 25 Oct 2007 15:07:53 GMT
Subject: python project ideas
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
Message-ID: <dj2Ui.5230$h67.5014@newsfe1-win.ntli.net>

On Thu, 25 Oct 2007 04:09:00 +0000, menkaur at gmail.com wrote:

> hi to everyone
> I wondered if this might be the right place to ask for some ideas for
> python project for university.
> I'd like it to be something useful and web-based. And the project must
> be complete in 2-3 months by 2-3 person group. May be something useful
> for open source or python community ... Well, just post what you think
> could be appropriate ...

How about a linux GUI for truecrypt ?


From bblais at bryant.edu  Thu Oct 11 11:03:46 2007
From: bblais at bryant.edu (Brian Blais)
Date: Thu, 11 Oct 2007 11:03:46 -0400
Subject: where to put application-specific data files?
Message-ID: <158F8B61-D2E6-48B8-8D5D-4680FCCFC166@bryant.edu>

Hello,

I am developing an application that needs some data files, but I am  
not sure what the best way to package and access them.  For instance,  
I have module like:

mymodule/
    __init__.py
    run.py

    data/
      file1.dat
      file2.dat


In run.py, I can do something like:

    fname='data/file1.dat'

which will work if I run it *in* the mymodule folder.  Once I install  
it, or want to do:

import mymodule
mymodule.run.this()

it won't know where the data/ folder is.  Is there a recommended way  
of locating application-specific data files?  If I want to save user- 
configuration files, is there a recommended procedure/place for these?



		thanks,


			Brian Blais


-- 
Brian Blais
bblais at bryant.edu
http://web.bryant.edu/~bblais



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071011/9665d4b3/attachment.html>

From software at ginstrom.com  Wed Oct  3 06:49:36 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Wed, 3 Oct 2007 19:49:36 +0900
Subject: interfacing Python interpreter with a VB6 frontend
In-Reply-To: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>
References: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>
Message-ID: <046501c805ab$178e5710$0203a8c0@MOUSE>

> On Behalf Of Anonymous
> This requires several steps, but the one I am having most 
> problem finding info on is the ff:
> 
> 1. using/interacting the Python interpreter from VB6

One way to do this might be by creating a COM server with Python, and having
VB feed it lines of text and then collect results of execution for display.

win32com has demos of COM servers.

--
Regards,
Ryan Ginstrom



From ebugbee at gmail.com  Fri Oct 26 13:20:27 2007
From: ebugbee at gmail.com (ThunderBug)
Date: Fri, 26 Oct 2007 10:20:27 -0700
Subject: Interpreter hook during evaluation
In-Reply-To: <1193416052.060300.254560@d55g2000hsg.googlegroups.com>
References: <1193416052.060300.254560@d55g2000hsg.googlegroups.com>
Message-ID: <1193419227.281231.176440@i38g2000prf.googlegroups.com>

> I would like access to a hook inside Python that would allow me to
> register a C++ function to be called periodically during the
> evaluation of a Python script.
>
> ... so calling it
> every Python instruction would not be that bad in terms of
> performance.
>

I too could make good use of such a hook.






From paul at boddie.org.uk  Sat Oct 20 20:01:16 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Sat, 20 Oct 2007 17:01:16 -0700
Subject: using "request" variable in python web program
In-Reply-To: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
Message-ID: <1192924876.257468.27810@v29g2000prd.googlegroups.com>

On 21 Okt, 00:21, sami <sami.... at gmail.com> wrote:
>
> def simple_web_app(request, api_key, secret_key):
>     fb = Facebook(api_key, secret_key, request.GET['auth_token'])
>     fb.auth_getSession()
>
> A Django-based tutorial and source is available here:http://wiki.developers.facebook.com/index.php/PythonPyFacebookTutorial
>
> I really don't want to use a framework for the time being and just
> want an app up and running

Something like CGI, mod_python or Python's standard library
BaseHTTPServer might be good enough. Or you could try WebStack if you
can't decide. See these links for details:

http://wiki.python.org/moin/CgiScripts
http://www.modpython.org/
http://wiki.python.org/moin/BaseHttpServer
http://www.python.org/pypi/WebStack

> My question is - how do you create the "request" object which will be
> passed into the simple_web_app(request, api_key, secret_key) function
> here - is there somewhere I can read into it?

The request object in this case is specifically a Django request
object; this can be deduced from usage of the request.GET attribute
which is specific to Django. If you decided to use another framework,
you'd need to rewrite this part; for example in WebStack...

class FacebookResource:
    def respond(self, trans):
        try:
            auth_token = trans.get_fields_from_path()['auth_token'][0]
            fb = Facebook(api_key, secret_key, auth_token)
            fb.auth_getSession()
            ...
        except KeyError: # no auth token
            ...

I'm sure others can suggest their own preferred solutions.

> I have been googling for hours and there seems to be no simple,
> straightforward example for this - PHP rules when it comes to simple
> web programming apps - either I am not looking at the right places but
> it's very hard to get up and running quickly for web apps in Python -
> maybe DiveIntoPython needs a section devoted for web programming

There's only consensus around WSGI as some kind of standard in Python
Web programming, but it isn't likely to get you very far without
forcing you to choose extra components to make the work bearable (eg.
to read query/form values), so it isn't the one way of doing things at
the level that PHP presumably offers (which is why it's presumably
easier to find advice on such matters all over the Web for PHP).

Most people advocate particular frameworks instead of WSGI, and as
you've noticed people do seem to like Django quite a lot. The problem
with this state of affairs is that you need to make "up front" choices
when testing out frameworks, and after the legwork of setting stuff
up, if you don't like what you've seen you've got to back out and do
similar (but different) stuff for your next choice of framework.

However, it shouldn't be too bad to set Django up, really, especially
if people have taken some time to explain something very close to what
you want to do using Django. Moreover, there's a Google group (django-
users) where you could ask general questions, and I imagine that
people will be quite happy to help you out. But I can totally
understand that creating databases and installing various packages
seems somewhat peripheral to a task which could arguably be done using
a CGI script (as far as I can see).

Paul

P.S. I'm not too impressed by the lack of a common high-level Web API
for Python, either. However, I've mostly ignored the discussions and
stuck with my own API (WebStack) in the knowledge that if it doesn't
work for me, at least I know how I might fix it.



From grante at visi.com  Wed Oct  3 13:03:49 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 03 Oct 2007 17:03:49 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<13g5uvh698l9h1c@corp.supernews.com>
	<mailman.1462.1191425446.2658.python-list@python.org>
Message-ID: <13g7irlht5ruj3a@corp.supernews.com>

On 2007-10-03, Chris Mellon <arkanes at gmail.com> wrote:
> On 10/2/07, Grant Edwards <grante at visi.com> wrote:
>> On 2007-10-02, Chris Mellon <arkanes at gmail.com> wrote:
>>
>> > PyGtk has poor cross platform support, a very large footprint (the
>> > largest of all these libraries)
>>
>> It's larger than wxWidgets on top of Gtk?
>
> No, but it's larger than wx on top of the native API,

A moot point for X11.

> so when you average it across all platforms it's quite a bit
> larger.

I guess that's one of the costs of portability.

-- 
Grant Edwards                   grante             Yow! CHUBBY CHECKER just
                                  at               had a CHICKEN SANDWICH in
                               visi.com            downtown DULUTH!


From paddy3118 at googlemail.com  Wed Oct 31 14:04:13 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Wed, 31 Oct 2007 18:04:13 -0000
Subject: permuting over nested dicts?
In-Reply-To: <fgadjl$4f3$1@news1.zdv.uni-mainz.de>
References: <fgadjl$4f3$1@news1.zdv.uni-mainz.de>
Message-ID: <1193853853.142956.166020@o38g2000hse.googlegroups.com>

On Oct 31, 5:21 pm, Christian Meesters <meest... at uni-mainz.de> wrote:
> Hoi,
>
> I have the following data structure (of variable size actually, to make
> things simple, just that one):
> d = {'a': {'x':[1,2,3], 'y':[4,5,6]},
>      'b': {'x':[7,8,9], 'y':[10,11,12]}}
> This can be read as a dict of possibilities: The entities 'a' and 'b' have
> the parameters 'x' and 'y', each. And d['a']['x'] can be either 1 or 2 or
> 3. Does anybody know a convenient (and fast) way to permute over all
> possible nested dicts like
> {'a': {'x':1, 'y':4},
>  'b': {'x':7, 'y':10}}
> and
> {'a': {'x':2, 'y':4},
>  'b': {'x':7, 'y':10}}
> and so forth?
>
> Any link or snippet is appreciated.
>
> TIA
> Christian

from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502199
import comb2
# (I wish)!

for xa,ya,xb,yb in comb2([1,2,3], [4,5,6], [7,8,9], [10,11,12]):
    print {'a': {'x': xa, 'y': ya},
           'b': {'x': xb, 'y': yb}}

Should work although untested.

- Paddy.



From python.list at tim.thechases.com  Sat Oct 27 11:48:10 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 27 Oct 2007 10:48:10 -0500
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <1193498867.815682.69050@v3g2000hsg.googlegroups.com>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>	<1193438763.190428.134710@q5g2000prf.googlegroups.com>	<87tzodii6i.fsf@benfinney.id.au>	<1193494184.618613.81090@50g2000hsm.googlegroups.com>
	<1193498867.815682.69050@v3g2000hsg.googlegroups.com>
Message-ID: <47235DBA.3030509@tim.thechases.com>

> Even clearer is not to allow octal literals :) Is there *any* use for
> them?

+1

I find that anything I have even the remotest inkling of using
octal for can be done just as easily with hex.

-tkc




From besturk at gmail.com  Thu Oct 18 11:06:47 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 08:06:47 -0700
Subject: Convert string to command..
In-Reply-To: <5npa5cFj5bvfU1@mid.uni-berlin.de>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
Message-ID: <1192720007.177063.194550@i13g2000prf.googlegroups.com>

Thanks you all answer..
But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
(100.000 elements)
Is there any easy alternative ?



From kadeko at gmail.com  Thu Oct 25 03:11:00 2007
From: kadeko at gmail.com (looping)
Date: Thu, 25 Oct 2007 00:11:00 -0700
Subject: Regular Expression question
In-Reply-To: <5oasj2Fm1hl5U2@mid.uni-berlin.de>
References: <1193294043.936217.54090@q5g2000prf.googlegroups.com>
	<5oasj2Fm1hl5U2@mid.uni-berlin.de>
Message-ID: <1193296260.635805.260630@q3g2000prf.googlegroups.com>

On Oct 25, 8:49 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
> needle = re.compile(r'create\s+or\s+replace\s+package(\s+body)?\s+',
>                     re.IGNORECASE)

What I want here is a RE that return ONLY the line without the "body"
keyword.
Your RE return both.
I know I could use it but I want to learn how to search something that
is NOT in the string using RE.





From exarkun at divmod.com  Sat Oct 20 16:15:54 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Sat, 20 Oct 2007 16:15:54 -0400
Subject: Get the instance name from a list by Reflection
In-Reply-To: <57045.94694.qm@web90513.mail.mud.yahoo.com>
Message-ID: <20071020201554.8162.685294192.divmod.quotient.25748@ohm>

On Sat, 20 Oct 2007 21:10:34 +0200 (CEST), sccs cscs <zorg724 at yahoo.fr> wrote:
>Hello,
>I cannot find into documentation how to get the instance name. I found the attributes __dict__,__class__ ,__bases__ __name__ ,
>but if i have the code:
>
>class A :pass
>a1 = A ()
>a2 = A ()
>aList = [a1,a2]
>for elem in aList :
>    print elem.__instance_name__ ???
>
>I expect to have "a1" "a2" ...
>But it does not work ...
>help please
>Zorgi

    $ python
    Python 2.4.3 (#2, Oct  6 2006, 07:52:30)
    [GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> class A: pass
    ...
    >>> a1 = A()
    >>> a2 = A()
    >>> aList = [a1, a2]
    >>> import __main__
    >>> from twisted.python.reflect import objgrep, isSame
    >>> for elem in aList:
    ...     objgrep(__main__, elem, isSame)
    ...
    ['.aList[0]', '.elem', '.a1']
    ['.aList[1]', '.elem', '.a2']
    >>>

Don't see how this could help,

Jean-Paul


From root at dev.nul.invalid  Tue Oct 23 00:45:03 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 06:45:03 +0200 (CEST)
Subject: Python - why don't this script work?
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
	<slrnfhqtv5.de7.steve@sorceror.wizard.dyndns.org>
Message-ID: <Xns99D27A156414MyBigKitty@194.177.96.26>

Steve Ackman <steve at SNIP-THIS.twoloonscoffee.com>  wrote in 
news:slrnfhqtv5.de7.steve at sorceror.wizard.dyndns.org:

[snip]
>   Did you bother reading the comments?  If you had, you'd
> know that's not how you run it.
>   When run as directed (and common sense dictates), 
> it works fine.
[snip]

I figured it out, I have to run python I think first then the script and 
the URL like this:

$ python image-harvester.py http://public.fotki.com/DaGennelman/

Now that actually seems to be doing something and it sure is busy now. It 
is making a lot of little subdirectories in my test directory. I had to 
copy image-harvester.py to the test directory first, then run python and 
image-harvester.py w/URL and it is going to town. Tons of subfolders, so 
far not images yet but it is not done. At least it is doing something now 
and not bitching and hanging. I guess I had to call up python and pass it 
to the script as the script does not seem to pull up python on it's own. So 
far I have 60 directories and about 45 robots.txt but no jpg files yet. I 
will let you know what happens. I think that these images are protected by 
script, you never get a valid URL to the imgage file, just referrers, and 
numbers and what not. When the image is finally displayed in your browser, 
then you can save it but not until then. Pretty good way to stop a 
harvester. Is this assumption pretty much correct or is there a way to make 
this work? Now that I use python as the first command, I can run it in an 
ssh window now and do not require an x-server.

Feel free to jump right in with your input on how this should or won't work 
and what can be done to make it better. I have all of my scripts in a 
$HOME/scripts/ directory and it is in my path but running this from another 
directory does not work if image-harvester.py is not in the harvest 
directory where I run the script from. I can right click on the image and 
save it but the amazing script trips all over itself with these wacky file 
name. I am all ears if someone figures it.
-- 
~Ohmster | ohmster /a/t/ ohmster dot com
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct  7 19:12:29 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 07 Oct 2007 23:12:29 -0000
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
Message-ID: <13giput3mhtvb6c@corp.supernews.com>

On Sun, 07 Oct 2007 13:24:14 -0700, Alex Martelli wrote:

> And yes, you CAN save about 1/3 of those 85 nanoseconds by having
> '__slots__=["zop"]' in your class A(object)... but that's the kind of
> thing one normally does only to tiny parts of one's program that have
> been identified by profiling as dramatic bottlenecks

Seems to me that:

class Record(object):
    __slots__ = ["x", "y", "z"]


has a couple of major advantages over:

class Record(object):
    pass


aside from the micro-optimization that classes using __slots__ are faster 
and smaller than classes with __dict__.

(1) The field names are explicit and self-documenting;
(2) You can't accidentally assign to a mistyped field name without Python 
letting you know immediately.


Maybe it's the old Pascal programmer in me coming out, but I think 
they're big advantages.


-- 
Steven.


From clintonbond at googlemail.com  Tue Oct 30 21:10:39 2007
From: clintonbond at googlemail.com (clinton)
Date: 30 Oct 2007 18:10:39 -0700
Subject: Earn Up To 100's of $ per Day with Ease!
Message-ID: <1193753972.167244.58800@y27g2000pre.googlegroups.com>

Tired of business opportunities that do not deliver what they promise?

Get Free Advice & a Honest Review on Internet Opportunities that Work!

MOre details http://powerfulmoneymakingideas.blogspot.com/



From besturk at gmail.com  Sun Oct 21 02:52:18 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 20 Oct 2007 23:52:18 -0700
Subject: Selection error...
In-Reply-To: <mailman.272.1192934933.13605.python-list@python.org>
References: <1192930118.501328.277540@i38g2000prf.googlegroups.com>
	<mailman.272.1192934933.13605.python-list@python.org>
Message-ID: <1192949538.820414.101970@k35g2000prh.googlegroups.com>


> cursor.execute("SELECT id from templinks where url=%s", (URL,) )
Yes i already try this before ask.

URL.decode('latin-1').encode('utf-8') to transcode it into utf-8.
i know this but how do you know the html encoding's a latin-1 ? Html
encoding is to be iso-8859-9 or ascii or cp1254 ... For this reason
URL.decode('latin-1').encode('utf-8') must give me error. I'm trying
now and whet it finished i write the result here.
Thank you very much for your helps.



From deets at nospam.web.de  Wed Oct 17 10:15:49 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 16:15:49 +0200
Subject: Dynamic and lazy import
References: <1192540610.799241.236160@t8g2000prg.googlegroups.com>
	<47159d0a$0$11389$9b622d9e@news.freenet.de>
	<1192625367.751188.241210@y27g2000pre.googlegroups.com>
	<5nmil0FiouurU1@mid.uni-berlin.de>
	<1192630414.917809.161930@i13g2000prf.googlegroups.com>
Message-ID: <5nmjolFiv0krU1@mid.uni-berlin.de>

>> Diez
> 
> Well, I would like to be able to use "setuptools", but the problem is
> that I can't.
> Cause the administrator do not want us to be able to add lib in python
> dir.
> So we have to create our own library directory...

That doesn't matter, setuptools is capable of installing anywhere - you just
have to setup _one_ PYTHONPATH (e.g. ~/.python24_packages) and then specify
that when installing the eggs.
 
> Moreover, I haven't seen in distutils how it manage different version
> of the same library; as far as I know, It just replace the old one by
> the newest one... and that's not really what I want.

Well, you might consider my statement in the last post as hint that you
didn't look properly. It CAN and will install sereval versions in parallel,
and allow for previous selection. GIYF.

Diez


From skpatel20 at gmail.com  Tue Oct  9 02:05:45 2007
From: skpatel20 at gmail.com (Sanjay)
Date: Mon, 08 Oct 2007 23:05:45 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.1685.1191875226.2658.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
Message-ID: <1191909945.520161.179960@o3g2000hsb.googlegroups.com>

> It's not clear at all from the OPs post exactly what functionality he
> is trying to derive from the timezone. Since timezones (obviously)
> contain more information than just the GMT offset (otherwise we
> wouldn't even have them), he may very well want to use the timezone
> given by the user to display correct local time to them. In this case,
> the actual, correct, political timezone is important, not just the GMT
> offset.

I am developing a website which would be accessed by members all over
the world. They can exchange data having some time fields, say
'schedule for next meeting'. Whenever somebody feeds some time field,
my application converts it to UTC and stores in the database. Later,
when the data is to be displayed to some member, the application
converts it to his local time, and displays the data.

thanks
Sanjay



From tdelaney at avaya.com  Wed Oct 10 21:21:18 2007
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Thu, 11 Oct 2007 09:21:18 +0800
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <20071010150907.5101E1E400E@bag.python.org>
Message-ID: <E4C7BCAB1872014F81CEAACD25699B8C0849F0@301081ANEX2.global.avaya.com>

Michael.Coll-Barth at VerizonWireless.com wrote:

>> From: Grant Edwards
>> 
>> Anyway, I apologize for my attempt at humor, since it appears
>> to have somehow offended.
> 
> Why apologize?  If someone doesn't like the name given to a piece of
> software by its author(s), screw them.  If I find the software useful,
> I'll use it.  Even if its called 'bouncingBetty'.  Actually, I might
> try it, just because of the name, but you get my point.

I agree entirely (being the person who started this). There is a
difference between using a word though that has existing connotations
for a lot of people, and one that doesn't.

In the case of "nucular", it's a mispronunciation that has been widely
ridiculed all over the world. There are people (including myself) who so
associate it as an object of ridicule that it's an immediate turn-off.

If you want to keep using the name, so be it - no skin off my nose. But
I couldn't mention NUCULAR here at work (Australia) for oh so many
reasons ... 

Tim Delaney


From lew at lewscanon.com  Sun Oct 21 09:52:05 2007
From: lew at lewscanon.com (Lew)
Date: Sun, 21 Oct 2007 09:52:05 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192972158.250126.203980@v23g2000prn.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
Message-ID: <D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>

llothar wrote:
> Depends. I would call Knuth as one of the worst programmers. Look at
> his total
> failures on literature programming. Software Engineering is something

Umm, the term is "literate" programmer and there is evidence that it is not a 
"failure".

> very
> different. Having a dead - i mean end of development line software
> like TeX - and

Based on what do you call it "dead end".  It's used, it's outlasted many other 
flashes in the pan, it does what its users require.  You will need evidence 
for such a claim.

> then trying to base a theory about software engineering (which is
> based on changes)

"base a theory" on what?  There's a clause missing here.

> is so absolutely stupid ...

Is that a technical evaluation?  It looks like random inflammatory comments 
without basis in logic or evidence.  Can stupidity be absolute?  What is the 
metric of stupidity?

How would you disprove that assertion?  Oh, wait, there wasn't an assertion. 
The sentence was incomplete.  What are you asserting?

A theory based on what, exactly, is "so absolutely stupid"?

-- 
Lew


From cjw at sympatico.ca  Wed Oct 24 18:06:05 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Wed, 24 Oct 2007 18:06:05 -0400
Subject: win32com.client documentation?
In-Reply-To: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
References: <1193236546.344635.54080@e9g2000prf.googlegroups.com>
Message-ID: <471FC1CD.7060101@sympatico.ca>

Mark Morss wrote:
> I am a unix person, not new to Python, but new to Python programming
> on windows.  Does anyone know where to find documentation on
> win32com.client?  I have successfully installed this module and
> implemented some example code.  But a comprehensive explanation of the
> objects and methods available is nowhere to be found.  I have been
> able to find a somewhat out-of-date O'Reilly book, nothing more.
> 
> I want to be able to script the creation of Excel spreadsheets and
> Word documents, interract with Access data bases, and so forth.
> 
You might download  and install Mark 
Hammond's PythonWin.

Colin W.



From bj_666 at gmx.net  Tue Oct  9 15:46:35 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 9 Oct 2007 19:46:35 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
Message-ID: <5n244rFf0dahU2@mid.uni-berlin.de>

On Tue, 09 Oct 2007 18:08:34 +0000, Steven D'Aprano wrote:

>>>> L = []
>>>> id(L)
> 3083496716L
>>>> L += [1]
>>>> id(L)
> 3083496716L
> 
> It's the same L, not rebound at all.

It *is* rebound.  To the same object, but it *is* assigned to `L` and not
just mutated in place.

In [107]: class A:
   .....:     a = list()
   .....:

In [108]: class B(A):
   .....:     pass
   .....:

In [109]: B.a += [42]

In [110]: A.a
Out[110]: [42]

In [111]: B.a
Out[111]: [42]

If it was just mutation then `B.a` would have triggered an `AttributeError`.

Ciao,
	Marc 'BlackJack' Rintsch


From deets at nospam.web.de  Mon Oct 22 06:25:54 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 12:25:54 +0200
Subject: Dealing with "funny" characters
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
	<mailman.259.1192890437.13605.python-list@python.org>
	<LlpSi.6020$y21.124@newssvr19.news.prodigy.net>
	<5nuolqFk13gcU1@mid.uni-berlin.de>
	<GxLSi.9029$sm6.2250@nlpi069.nbdc.sbc.com>
Message-ID: <5o3c5iFkunetU1@mid.uni-berlin.de>

>> I doubt that indexing has anything to do with it whatsoever.
> 
>      Of course it does.  ORDER BY, LIKE, TRIM, and other SQL expressions
>      that
> do more than an equal comparison need to know the actual data
> representation. If you were to convert to UTF-8 or UCS-2 in the Python
> program and send the resulting byte string to MySQL, with MySQL thinking
> it was storing
> ASCII or a BLOB, many SQL functions won't work right.  A database is
> not a file system; a database looks at the data.

Garbage in, garbage out. But putting correctly encoded data into it won't
make any troubles, so "You don't want to convert data to UTF-8 before
putting it in a
database; the database indexing won't work." is utter nonsense. 

>> You confuse unicode with utf-8 here.
> ... pontification deleted

Pontication in contrast to what - your highly informative posts like this? 
http://mail.python.org/pipermail/python-list/2007-October/461375.html

I'm sure there are other daily routines your audience here can't wait to be
informed of in regular intervals.

Just because you write nonsense like 
"""
? ? First, tell MySQL, before you create your MySQL tables, that the tables
are
to be stored in Unicode:

????????ALTER database yourdatabasename DEFAULT CHARACTER SET utf8;
 """

confusing unicode with an encoding of it doesn't make me pontificate. 

Diez


From mail at microcorp.co.za  Tue Oct 30 01:28:07 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Tue, 30 Oct 2007 07:28:07 +0200
Subject: Built-in functions and keyword arguments
References: <20071029173742.8162.554468338.divmod.quotient.29276@ohm>
Message-ID: <00c001c81ab7$1383c800$03000080@hendrik>


"Jean-Paul Calderone" <exarkun at divmod.com> wrote:

> On Mon, 29 Oct 2007 19:03:34 +0200, Hendrik van Rooyen <mail at microcorp.co.za>
wrote:

> >Looks like a gotcha to me - its the difference between a keyword
> >(master = 42) and an assignment  (s='I am a string')
> >
>
> But it's not a keyword:
>
>   >>> len(s=[])
>   Traceback (most recent call last):
>     File "<stdin>", line 1, in ?
>   TypeError: len() takes no keyword arguments
>   >>>
>
> I think that's the issue here.

yes - the point I am trying to make is that the intention of the OP
was to use an assignment as an argument, and you can't do that,
as the interpreter thinks its a keyword.   Hence the gotcha.

- Hendrik



From mhearne808 at gmail.com  Wed Oct 10 18:00:45 2007
From: mhearne808 at gmail.com (mhearne808[insert-at-sign-here]gmail[insert-dot-here]com)
Date: Wed, 10 Oct 2007 15:00:45 -0700
Subject: PYTHONPATH on OS X
Message-ID: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>

I'm missing something major here.  I'm trying to add a directory to my
python path using the PYTHONPATH environment variable, and it's being
ignored by the Python interactive shell.

Below is a capture of what I did.  Note that my newfolder appears
nowhere on the list of directories in sys.path.  How do I get Python
to pay attention to my shell variables?

Using bash on OS X 10.4.10.

%:~ user$ echo $PYTHONPATH

%:~ user$ PYTHONPATH=/Users/user/newfolder
%:~ user$ echo $PYTHONPATH
/Users/user/newfolder
%:~ user$ python
Python 2.5.1 (r251:54863, Aug 10 2007, 10:46:58)
[GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/local/lib/python2.5/site-packages/
setuptools-0.7a1dev_r56320-py2.5.egg', '/usr/local/lib/python2.5/site-
packages/ipython1-0.9alpha2-py2.5.egg', '/usr/local/lib/python2.5/site-
packages/SQLAlchemy-0.4.0beta5-py2.5.egg', '/usr/local/lib/python2.5/
site-packages/MySQL_python-1.2.2-py2.5-macosx-10.3-i386.egg', '/usr/
local/lib/python25.zip', '/usr/local/lib/python2.5', '/usr/local/lib/
python2.5/plat-darwin', '/usr/local/lib/python2.5/plat-mac', '/usr/
local/lib/python2.5/plat-mac/lib-scriptpackages', '/usr/local/lib/
python2.5/lib-tk', '/usr/local/lib/python2.5/lib-dynload', '/usr/local/
lib/python2.5/site-packages', '/usr/local/lib/python2.5/site-packages/
PIL']



From panguohualove at sina.com  Sun Oct  7 07:22:04 2007
From: panguohualove at sina.com (panguohua)
Date: Sun, 07 Oct 2007 04:22:04 -0700
Subject: a good website for softwares,movies and music etc.
Message-ID: <1191756124.163780.39980@k79g2000hse.googlegroups.com>

www.space666.com



support!!!!!!!



From gregturn at mindspring.com  Thu Oct 11 16:49:30 2007
From: gregturn at mindspring.com (Goldfish)
Date: Thu, 11 Oct 2007 13:49:30 -0700
Subject: EasyMock for python ?
In-Reply-To: <mailman.84.1192112806.927.python-list@python.org>
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
	<mailman.84.1192112806.927.python-list@python.org>
Message-ID: <1192135770.546802.207060@57g2000hsv.googlegroups.com>

I had to get the hang of jMock-style testing through the usage of the
pmock library. But it seems to work out pretty well.

See some of my test cases at
http://springpython.python-hosting.com/browser/trunk/src/springpython/test/databaseCoreTestCases.py.

That should provide a hearty sample of uses for this mock set. It
easily let me throw away the real database and conclude unit testing
much faster.



From paulgeeleher at gmail.com  Mon Oct 22 07:09:31 2007
From: paulgeeleher at gmail.com (sophie_newbie)
Date: Mon, 22 Oct 2007 04:09:31 -0700
Subject: Error when python script run as cgi script
In-Reply-To: <13hn6j16rbgnaa4@corp.supernews.com>
References: <1192985454.957211.219450@z24g2000prh.googlegroups.com>
	<13hn6j16rbgnaa4@corp.supernews.com>
Message-ID: <1193051371.041846.157340@v29g2000prd.googlegroups.com>

On Oct 21, 7:28 pm, Dennis Lee Bieber <wlfr... at ix.netcom.com> wrote:
> On Sun, 21 Oct 2007 09:50:54 -0700, sophie_newbie
> <paulgeele... at gmail.com> declaimed the following in comp.lang.python:
>
> > Hi, I'm running a python script which if I run from the command line
> > as root runs fine. But if I run it through the web-browser as a cgi
> > script gives the following error "Error in X11: unable to start device
> > PNG".
>
> > Now I should say that this python script is calling fucntions in R (a
> > scripting languange used in statistics) using the python module RPy,
> > so this I dunno if this is entirely a Python question, because as far
> > as I can see the error is being thrown by R. But then as I say, when
> > the script is run by the root user from the command line everything
> > goes off without a hitch.
>
>         Ah, but does it run if you boot into a NON-graphical command shell
> mode...
>
>         That error message looks suspiciously like something is trying to
> open a graphical display window... A web-server likely does not have any
> graphical environment.
> --
>         Wulfraed        Dennis Lee Bieber               KD6MOG
>         wlfr... at ix.netcom.com              wulfr... at bestiaria.com
>                 HTTP://wlfraed.home.netcom.com/
>         (Bestiaria Support Staff:               web-a... at bestiaria.com)
>                 HTTP://www.bestiaria.com/

Ya thanks looks like you're actually right. The strange thing is that
the program, when run from a graphical command line, doesn't actually
open any display window. Although the code doesn't run when executed
as a webserver, most likely, as you pointed out, because there is no
graphical environment. I wonder if there any way I can somehow enable
a graphical environment for the webserver, or do I have to re-write
the underlying code?



From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 22 16:23:11 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 22:23:11 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
Message-ID: <471d06e2$0$12275$426a74cc@news.free.fr>

Steven Bethard a ?crit :
(snip)
> In Python, you can use property() to make method calls look like 
> attribute access.  This could be necessary if you have an existing API 
> that used public attributes, but changes to your code require those 
> attributes to do additional calculations now.
> 
> But if you're creating a class for the first time, it should *never* use 
> property().  There's no need to retrofit anything.

May I kindly disagree here ?-)

Computed attributes are IMHO not only a life-saver when it comes to 
refactoring. There are cases where you *really* have - by 'design' I'd 
say - the semantic of a property, but know from the start you'll need 
computation (for whatever reason). Then what would be the rationale for 
using explicit getters/setters ?



From python at hope.cz  Mon Oct  1 11:07:40 2007
From: python at hope.cz (Johny)
Date: Mon, 01 Oct 2007 08:07:40 -0700
Subject: Python and SSL
In-Reply-To: <7xzlz2q53e.fsf@ruckus.brouhaha.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
Message-ID: <1191251260.376954.265060@22g2000hsm.googlegroups.com>

On Oct 1, 4:31 pm, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
> Johny <pyt... at hope.cz> writes:
> > By using my Python program I am  attempting to trust a certificate
> > signed by a certification authority that Python doesn't trust and that
> > causes the error.
>
> No, as Martin points out, Python trusts EVERY certificate, which of
> course misses the whole point of certificates.  Whatever is making
> your program fail is something different.

Paul, are you sure for 100%. It is hard to belive.
In Java it is possible so I would expect that to be possible in Python
too.
L.




From paul at boddie.org.uk  Wed Oct  3 05:57:44 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Wed, 03 Oct 2007 02:57:44 -0700
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <mailman.1438.1191403809.2658.python-list@python.org>
References: <mailman.1402.1191343422.2658.python-list@python.org>
	<1191358854.210832.70630@n39g2000hsh.googlegroups.com>
	<mailman.1438.1191403809.2658.python-list@python.org>
Message-ID: <1191405464.131347.18420@r29g2000hsg.googlegroups.com>

On 3 Okt, 11:30, "Jorgen Bodde" <jorgen.maill... at gmail.com> wrote:
>
> Thank you for confirming this, I did manage a work around. When
> reading back the XML file, I strip it off it's whitespaces before I
> parse it. Then when writing it back no excessive whitespaces are
> appended. My best guess is that toprettyxml is not intelligently
> handling whitespaces that are already there, and bluntly appends more
> whitespaces to it, making it grow exponentially.

This seems like a reasonable explanation without having looked at the
source code myself.

[...]

> And then I simply use parseString instead of parse. But honestly, I
> think it is a bug, because the XML standard also says that whitespaces
> before normal text should be ignored, and I do not see it back as text
> when I read the node, so why preserve it and mess up the formatting in
> the end?

Which part of the standard is this? Here's the XML 1.0 specification's
section on whitespace:

http://www.w3.org/TR/2006/REC-xml-20060816/#sec-white-space

It seems to me that applications (and the libraries which serve them)
can choose what to do unless xml:space is set to "preserve". It does
seem odd that the toprettyxml method chooses to respect existing
whitespace whilst also disrupting it by adding more, however.

Paul



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 16:02:54 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 21:02:54 +0100
Subject: A class question
In-Reply-To: <87ve8pnfbd.fsf@mulj.homelinux.net>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
	<47260805$0$5155$426a34cc@news.free.fr>
	<87d4uxk08l.fsf@mulj.homelinux.net>
	<4726f139$0$11586$426a34cc@news.free.fr>
	<87ve8pnfbd.fsf@mulj.homelinux.net>
Message-ID: <47278e1b$0$29610$426a74cc@news.free.fr>

Hrvoje Niksic a ?crit :
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
> writes:
> 
> 
>>>While Java's variable declarations bear a superficial (syntactical)
>>>similarity to C, their semantics is in fact equivalent to the
>>>object-reference semantics we know in Python.   They implicitly refer
>>>to objects allocated on the heap and, just like in Python, the same
>>>object can be referenced by multiple variables. 
>>
>>You're talking about reference types here - not primitive types. And
>>even then, from what I remember (not having done any Java these last
>>4 years at least), Java's reference types are much closer to C++
>>references than to Python.
> 
> 
> Feel free to look it up; I believe you will find the semantics of
> assignment, parameter-passing, etc., exactly the same as in Python.

I'll do - while perhaps not in a near future !-) - and keep you informed.


From lasses_weil at klapptsowieso.net  Tue Oct  2 14:22:57 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Tue, 02 Oct 2007 20:22:57 +0200
Subject: I earn $36800 a month with google adsense
In-Reply-To: <1191340911.199902.314570@w3g2000hsg.googlegroups.com>
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
	<1191240372.428917.253350@o80g2000hse.googlegroups.com>
	<1191289294.449262.234020@r29g2000hsg.googlegroups.com>
	<1191330957.461057.313830@k79g2000hse.googlegroups.com>
	<1191340911.199902.314570@w3g2000hsg.googlegroups.com>
Message-ID: <47028c82$0$16115$9b4e6d93@newsspool1.arcor-online.net>

panguohua wrote:
> I am only a publisher!!!
> 
> 
> really it is useful
> 
Wow! That has got to be the first response by a spammer with some form 
of "meaningful" remark. I'm impressed.

Dude, you, even as a spammer, can learn a lot from this group. As Diez 
pointed out, you will want to quote the site that you're spamvertising 
(Bastard!), so your pagerank rises.
Pretty new to the biz, ain't ya?

/W


From DustanGroups at gmail.com  Thu Oct 18 18:06:26 2007
From: DustanGroups at gmail.com (Dustan)
Date: Thu, 18 Oct 2007 22:06:26 -0000
Subject: Strange behaviour with reversed()
In-Reply-To: <13he7mbqd8gff85@corp.supernews.com>
References: <13hdochic30oo43@corp.supernews.com>
	<87myuhyoz8.fsf@benfinney.id.au>
	<13he7mbqd8gff85@corp.supernews.com>
Message-ID: <1192745186.599323.296820@q5g2000prf.googlegroups.com>

On Oct 18, 3:52 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Thu, 18 Oct 2007 15:24:27 +1000, Ben Finney wrote:
> > Steven D'Aprano <st... at REMOVE-THIS-cybersource.com.au> writes:
>
> >> and help(reversed) but neither gives any insight to what happens when
> >> you use reversed() on a sequence, then modify the sequence.
>
> > I would think the answer is the same for any question about modifying
> > sequences while iterating: "undefined, therefore don't do that".
>
> That's not correct. You can modify sequences while iterating, and the
> results are often perfectly predictable (but watch out for off-by-one
> errors):

Perhaps a better word to use here would have been "undocumented", and
therefore unsafe to use, as it might differ in different versions, or
in different data-types. Dictionaries cannot continue iteration once
they have changed size.



From horpner at yahoo.com  Mon Oct 15 13:06:20 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Mon, 15 Oct 2007 17:06:20 GMT
Subject: Newbi Q: What is a rational for strings not being lists in Python?
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
	<mailman.26.1192461148.13605.python-list@python.org>
Message-ID: <g6NQi.39107$G23.36589@newsreading01.news.tds.net>

On 2007-10-15, Simon Brunning <simon at brunningonline.net> wrote:
> On 10/15/07, Dmitri O.Kondratiev <dokondr at gmail.com> wrote:
>> To clarify my point:
>> reverse()  is  a lucky one  - Python has variants of *this particular*
>> function both for lists and strings. Yet what about other list functions?
>> How in general, can I write a function that works  both on list and string
>> types? Both are sequences, right? Why string is not a subtype of a list
>> then?
>
> Lists are mutable, strings are not, so so strings can't support all a
> list's methods.
>


From trekker182 at comcast.net  Tue Oct 16 09:28:07 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Tue, 16 Oct 2007 09:28:07 -0400
Subject: while statements
Message-ID: <4714BC67.9060904@comcast.net>

I just learned about while statements and get why you place them around 
inputs for validation, but I'm a little lost on exactly where to place 
it with what condition in this program where the number of fat grams 
exceeds the total number of calories so that it loops back and asks you 
the two questions again instead of just saying The calories or fat grams 
were incorrectly entered.  Any idea's?

thx

while cal <=0:
    #Prompt for calories
        cal = input("Please enter the number of calories in your food: ")
        if cal <=0:
            print "Error.  The number of calories must be positive."

    #Prompt for fat
        fat = input("Please enter the number of fat grams in your food: ")
        if fat <=0:
            print "Error.  The number of fat grams must be positive."


    #Calculate calories from fat
        calfat = float(fat) * 9
        
    #Calculate number of calories from fat
        caldel = calfat / cal
 
    #change calcent decimal to percentage
        calcent = caldel * 100

    #evaluate input
    if calfat > cal:
        print "The calories or fat grams were incorrectly entered."

    elif calcent > 0 and calfat < cal:
    
        if caldel <= .3:
            print "Your food is low in fat."
        elif caldel >= .3:
            print "Your food is high in fat."

     
    #Display percentage of calories from fat
        print "The percentage of calories from fat in your food is %", 
calcent



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Mon Oct 29 18:15:02 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Mon, 29 Oct 2007 23:15:02 +0100
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu> <87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu>
Message-ID: <5on4b6Fnq6p5U2@mid.individual.net>

brad wrote:

> a_string.list() instead of list(a_string)

A string can be stripped, "lowercased" or split, but why should it
be able to be "listed"? IMHO, list is a conversion function to make
a list from something.
 
>> And to answer the question. In OO programming generic functions
>> are no less important than classes and objects.
> 
> Do they not take away from the OOness of the overall language and
> introduce inconsistencies?

Not at all. Explain, why should they? Functions can be objects, too.
And are in Python.

The inconsistencies arise, IMHO, if an OO language introduces
non-object types for performance reasons, after that gets wrapper
classes to wrap those primitives, and even later gets the ability
to automatically cast a primitive into a wrapper class instance.
That's just ugly.

Regards,


Bj?rn

-- 
BOFH excuse #56:

Electricians made popcorn in the power supply



From lasses_weil at klapptsowieso.net  Mon Oct 29 20:59:09 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Tue, 30 Oct 2007 01:59:09 +0100
Subject: A Python 3000 Question
In-Reply-To: <5on4b6Fnq6p5U2@mid.individual.net>
References: <fg5fku$5c1$1@solaris.cc.vt.edu> <87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu>
	<5on4b6Fnq6p5U2@mid.individual.net>
Message-ID: <472681dd$0$4375$9b4e6d93@newsspool4.arcor-online.net>

Bjoern Schliessmann wrote:
> The inconsistencies arise, IMHO, if an OO language introduces
> non-object types for performance reasons, after that gets wrapper
> classes to wrap those primitives, and even later gets the ability
> to automatically cast a primitive into a wrapper class instance.
> That's just ugly.
> 
If you mean Java, then just say Java.

;)
/W


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 21 19:01:45 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 21 Oct 2007 23:01:45 -0000
Subject: Splitting URLs
References: <13hmp2330pgrua4@corp.supernews.com>
	<mailman.293.1192996519.13605.python-list@python.org>
Message-ID: <13hnmip3i81kh93@corp.supernews.com>

On Sun, 21 Oct 2007 14:55:01 -0500, Tim Chase wrote:

> there are some goodies in urllib for doing some of this splitting. 
> Example code at the bottom of my reply (though it seems to choke on
> certain protocols such as "mailto:" and "ssh:" because urlparse doesn't
> return the netloc properly)

It doesn't? That's... bad. But for my application, probably not 
important: I only care about HTTP.

Thanks for the reply and sample code.


-- 
Steven


From Jean-Bernard.jacquet-at-tele-deux-point-fr at invalid.org  Wed Oct  3 14:35:12 2007
From: Jean-Bernard.jacquet-at-tele-deux-point-fr at invalid.org (JBJ)
Date: Wed, 03 Oct 2007 20:35:12 +0200
Subject: Convert on uppercase unaccentent unicode character
Message-ID: <4703dfff$0$30966$426a74cc@news.free.fr>

Hi,
I'am very newbie in Python.
For the moment I'am trying to convert an unicode character to his uppercase
unaccented character.
By example with locale fr_FR:
a,A,?,? should return A
o,O,?,? should return O
?,? should return ?
i,I,?,? should return I
 
Have you some suggestions ?

Thank.


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 21:54:56 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 01:54:56 -0000
Subject: Singleton
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<13gplgh75hot354@corp.supernews.com>
	<1192024635.416697.210620@o3g2000hsb.googlegroups.com>
	<13gprb0dd0b2u33@corp.supernews.com>
	<1192035146.615785.234330@57g2000hsv.googlegroups.com>
Message-ID: <13gr0jgfvjgit17@corp.supernews.com>

On Wed, 10 Oct 2007 09:52:26 -0700, Carl Banks wrote:

> On Oct 10, 11:18 am, Steven D'Aprano <st... at REMOVE-THIS-
> cybersource.com.au> wrote:
>> Of course, if there is some other meaning to the OP's post, then
>> possibly I've completely misunderstood it. Would you mind telling me
>> what you've seen that the rest of us haven't?
> 
> I read far enough to see that OP had mischaracterized the problem and
> that it wasn't a problem with singletons at all; it was a problem with
> importing. And that it would still manifiest itself with borgs.

Fair enough, thanks to Diez's example, I see that now.

The way I read the OP's post, he was only having problems *because* of 
the requirement "I must have a singleton". Change the requirement to "I 
don't need a singleton" and maybe the problem goes away, yes? And if not, 
then at least it becomes obvious that the problem is nothing to do with 
singletons.



-- 
Steven.


From shriphanip at gmail.com  Tue Oct  9 07:19:30 2007
From: shriphanip at gmail.com (Shriphani)
Date: Tue, 09 Oct 2007 11:19:30 -0000
Subject: Editing particular lines of a text file.
Message-ID: <1191928770.776311.226710@r29g2000hsg.googlegroups.com>

Hello all,

I am trying to create a script that looks at specific strings in a
file like:

msgid "I am a disco dancer."

and compares the part in quotes to the keys in a dictionary, finds the
value and creates a new line right after this string in the file. I
have planned to write this as follows:

1. Open the file in read mode
2. parse each line to figure out which line contains "msgid" and use
the shlex module's split method to go and split this line and pick the
2nd element list[1].
3. find the value from the dictionary corresponding to the above
element.
4. Insert the line. This part is where I face a problem. How do I
plainly edit just one line. I would also like to look at some sample
code that does this.
5. open a new file and write the new file with the inserted strings to
it.
6. close both files opened.

Regards,
Shriphani Palakodety



From horpner at yahoo.com  Wed Oct 31 08:44:53 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 31 Oct 2007 12:44:53 GMT
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
Message-ID: <slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>

On 2007-10-30, George Sakkis <george.sakkis at gmail.com> wrote:
> On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
>> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>>
>> > This is a FAQ:
>> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-function...
>>
>> Holy Airy Persiflage Batman!
>>
>> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
>> win32
>> Type "help", "copyright", "credits" or "license" for more information.>>> import timeit
>> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
>> 0.20332271187463391
>> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>>
>> 0.48545737364457864
>
> Common mistake; try this instead:
>
> timeit.Timer('seqlen()',
>              'seq = range(100); seqlen=seq.__len__').timeit()

Why would I want to do that?

-- 
Neil Cerutti
These people haven't seen the last of my face. If I go down, I'm going down
standing up. --Chuck Person


From tismer at stackless.com  Sat Oct  6 22:07:55 2007
From: tismer at stackless.com (Christian Tismer)
Date: Sun, 07 Oct 2007 04:07:55 +0200
Subject: Where's the Starship's crew?
In-Reply-To: <1191576398.250642.71010@w3g2000hsg.googlegroups.com>
References: <mailman.1567.1191573488.2658.python-list@python.org>
	<1191576398.250642.71010@w3g2000hsg.googlegroups.com>
Message-ID: <47083F7B.2080401@stackless.com>

exhuma.twn wrote:
> On Oct 5, 10:31 am, Dick Moores <r... at rcblue.com> wrote:
>> <http://starship.python.net/crew/index.html>
>>
>> I didn't check on all of them, but the only one I found was Mark
>> Hammond <http://starship.python.net/crew/mhammond/>.
>>
>> Dick Moores
> 
> Doing 6 random clicks, revealed:
> 
> http://starship.python.net/crew/hooft/
> 
> all the others are dead links. I realised this fact as well some time
> ago already. I thought the page itself was still "in development" and
> did not find a single one page. These two obviously eluded me ;)

There are actually 20 active links, different from the error default.
Ok, this is not the best result for a total of 273 members.

> Strange to see that the situation did not yet improve. But then again,
> we all probably know how much of a hassle it is to keep 10 different
> web-pages with personal info's up-to-date. I suppose that the starship
> crew all have som homes elsewhere and don't find the time to update
> yet another page.

No, I think the Starship lost a lot of its popularity after a couple
of havaries, and its initiator failed to lead it and to push it
further. I think this is something that needs to be done by somebody.
There was a couple of very helpful supporters, but they were all
on their own, and the originally driving person did not care
any longer for many years. This has changed.

> I myself don't even bother anymore at all. I have
> about 2 hours of free time per day (given that I like to sleep a
> lot!). What makes things worse, the network at work is completely cut
> off from the rest of the world for security reasons. I am happy that I
> at least can access usenet by using google-groups *sigh*.

So you have HTTP access?
Then ask the starship to support that!
I will take care!

> An interesting task might be to find the homes of the starship crew,
> and post them here? Maybe? If lucky, the right person picks this up
> and updates the crew-quarter labels of the starship. Or would
> "Turbolift Buttons" be a better analogy for hyperlinks? Args.
> Supposing, that these turbolifts *do* have buttons. How retro! ;)

The Starship has gone through quite some problems and different hands.
They all were good, and I wish to thank Stefan Drees especially
for hosting it alone for four years from his personal budget.
Not to forget the years where we were hosted by zope.org, and
beopen.com, and some Service created by Mike Mc. Lay before.
Please excuse me, the I don't remember all the details, this
will go into a history page or blog ASAP.

After a long journey through space and time, I am getting back at
my roots, and I want to fill the gap of a driving person, again.
This is not selfish in any way, and not saying that it must be
me at all, but somehow I feel the wish to bring something to
a working future that I started long time ago.

I invented, created and hosted the Starship, ten years ago.
Now I think, after spending a lot of time with other projects
like Stackless Python and PyPy, time has come to redo the Starship
idea, which was my first contribution for the Python community,
a time where I was not able to really contribute by code.
Especially, I could not work on the Python core because I was no
C programmer. So I created Starship, learned C, understood all
the internals and invented Stackless.

But after all, I think I owe the Starship a lot, and I want it to
continue, and to become a valued resource, again. As a starter,
I moved the ship to my stackless server, this time using OpenVZ.

This transfer worked much smoother than expected; I consider
OpenVZ a great piece of software.

The Starship is therefore right now not very different from its
outside view, it was just moved and upgraded. That is just the
beginning. To turn it into a resource of desire, again, a row
of improvements are necessary.

My personal vision, amoung new projects, is to split my time
between Starship, Stackless and PyPy. If that works depends
on the goodwill of sponsors. But it has worked, so I believe it
will work, again.

--

Here is an incomplete list of things that I want to do or initiate.

First, I want to revive as many as crew homes that are archived.
This will fill the tiny list from above, reasonably, and probably
it will result in people updating their outdated pages.

Then, I want to split the Starship into many sub-sites, first
on my server, then by using a lot of more servers. I am seeking
for sponsors who are willing to support this.

In the end, my vision is turning python.net into a real network
of many servers, each running a very small number of services
through openVZ. Python.net should be something like a server farm,
which runs everything available in Python. Really everything,
including the myriads of possible PyPy builds.

I want to separate all of these things by utilizing OpenVZ,
as fine-grained as makes sense. I am investigating this these days.
Right now, the Starship is a single VE. It will turn into a growing
set of smaller VE's in the next weeks. And as soon as we get
sponsorship, python.net will split itself over multiple machines.

After all, my vision is to create the ultimate Python showdown,
running everything possible in isolated environments and allowing
people to play with different configurations.

python.net should become the ultimate python resource site
for interactive playing and trying, and providing a home for
people to show their development.

I will also try to get the PSF interested in that; maybe there
is also some PSF funding possible. But this is an option, I
will continue Starship without support as well.

I believe I can do that, with your help.

feeling stronger than before that stroke attack -- sincerely - chris

--

This is much more work than I can do alone. Therefore, I am asking
for people to help me with this.
I also don't want to miss any of the current supporters, and we will
name them all on the revised contributors pages to come.
In order to support really many Python projects, we will need
not only sponsors, but probably the support of the individual
project maintainers as well. I am open to make this my goal
of life, if there are enough people interested.
But they will, I know it.

I do believe in Python, Starship, PyPy and Stackless.
Please help me to make this life-dream into reality.

happily being back to the roots -- chris

-- 
Christian Tismer             :^)   <mailto:tismer at stackless.com>
tismerysoft GmbH             :     Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9A     :    *Starship* http://starship.python.net/
14109 Berlin                 :     PGP key -> http://wwwkeys.pgp.net/
work +49 30 802 86 56  mobile +49 173 24 18 776  fax +49 30 80 90 57 05
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
       whom do you want to sponsor today?   http://www.stackless.com/


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct  1 14:26:33 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 20:26:33 +0200
Subject: Combine two dictionary...
In-Reply-To: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
Message-ID: <47013c15$0$18267$426a74cc@news.free.fr>

Abandoned a ?crit :
> 
> I'm sorry my bed english.

Time to go to bad, then !-)

(sorry, couldn't resist)



From paul.hankin at gmail.com  Wed Oct 17 16:46:43 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 20:46:43 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
Message-ID: <1192654003.499168.255330@y27g2000pre.googlegroups.com>

On Oct 17, 9:27 pm, Debajit Adhikary <debaj... at gmail.com> wrote:
> I have two lists:
>
> a = [1, 2, 3]
> b = [4, 5, 6]
>
> What I'd like to do is append all of the elements of b at the end of
> a, so that a looks like:
>
> a = [1, 2, 3, 4, 5, 6]
>
> I can do this using
>
> map(a.append, b)
>
> How do I do this using a list comprehension?
>
> (In general, is using a list comprehension preferable (or more
> "pythonic") as opposed to using map / filter etc.?)

Yes, using a list comprehension is usually more pythonic than using
map/filter. But here, the right answer is:
a.extend(b). The first thing you should always do is check the python
libraries for a function or method that does what you want. Even if
you think you know the library quite well it's still worth checking:
I've lost count of the number of times I've discovered a library
function that does exactly what I wanted.

Anyway, if extend didn't exist, the pythonic version of map(a.append,
b) would be
    for x in b:
        a.append(x)

Rather than
    [a.append(x) for x in b]


List comprehensions and map produce a new list. That's not what you
want here: you're using the side-effect of the append method - which
modifies a. This makes using regular iteration the right idea, because
by using map or a comprehension, you're also constructing a list of
the return values of append (which is always None). You can see this
in the interpreter:

>>> map(a.append, b)
[None, None, None]

>>> a
[1, 2, 3, 4, 5, 6]

HTH

--
Paul Hankin



From parnell.s at comcast.net  Thu Oct 18 02:06:24 2007
From: parnell.s at comcast.net (Ixiaus)
Date: 17 Oct 2007 23:06:24 -0700
Subject: Noob questions about Python
In-Reply-To: <1192659838.773066.160060@i38g2000prf.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192659838.773066.160060@i38g2000prf.googlegroups.com>
Message-ID: <1192663840.916445.207420@k35g2000prh.googlegroups.com>

> Right idea: now to remove all those intermediate lists you construct.
> 1. reversed(val) creates an iterator that runs over the elements (here
> of a string) in reverse order.
> 2. enumerate() is usually better than using an explicit list index.
> 3. You can use a generator in your sum to avoid constructing the final
> list.
>
> Applying these to your function, and noting that n << k is nicer than
> n * 2 ** k, we get a one-liner:
>
> def bin2dec(val):
>     return sum(int(i) << k for k, i in enumerate(reversed(val)))
>
> Or a slightly nicer alternative is to filter the generator using 'if':
>
> def bin2dec(val):
>     return sum(1 << k for k, i in enumerate(reversed(val)) if int(i))
>
> --
> Paul Hankin

Thank you for this reply, I only wish I could come up with functions
so elegantly refined!

I know '<<' is shifting x over by n bits; but could you point me to
some literature that would explain why it is the same as "x*2**n"?
(Googling only returns bit shift, but doesn't necessarily explain the
manner in which you are using it)

I will have to read up more on Generators, but maybe you can give me a
lowdown on why
sum([1 << k for k, i in enumerate(reversed(val)) if int(i)]) is less
efficient than using a Generator (is the generator a 'temporary'
list?)
sum(1 << k for k, i in enumerate(reversed(val)) if int(i))

-- Parnell Springmeyer



From Caseyweb at gmail.com  Thu Oct  4 17:10:18 2007
From: Caseyweb at gmail.com (Casey)
Date: Thu, 04 Oct 2007 21:10:18 -0000
Subject: What does the syntax [::-1] really mean?
In-Reply-To: <1191531485.929483.146370@k79g2000hse.googlegroups.com>
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
	<Xns99BFD8C6B2BF5duncanbooth@127.0.0.1>
	<Xns99BFDB14727D0duncanbooth@127.0.0.1>
	<1191531485.929483.146370@k79g2000hse.googlegroups.com>
Message-ID: <1191532218.830731.80030@y42g2000hsy.googlegroups.com>

On Oct 4, 4:58 pm, Casey <Casey... at gmail.com> wrote:
> Thanks, again! I figured it out from Fred's and your initial posts.

Oops - I meant Kurt, not Fred.  Sorry for the mis-attribution!



From paul at boddie.org.uk  Mon Oct 29 07:09:55 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Mon, 29 Oct 2007 04:09:55 -0700
Subject: problem opening html file with webbrowser.open
In-Reply-To: <mailman.572.1193654693.13605.python-list@python.org>
References: <mailman.572.1193654693.13605.python-list@python.org>
Message-ID: <1193656195.877040.272570@d55g2000hsg.googlegroups.com>

On 29 Okt, 11:44, "krishnakant Mane" <researchb... at gmail.com> wrote:
> hello all,
> as I posted in my previous thread, I am generating html reports for my
> client software.
> I am yet to find a satisfactory module which can help me actually
> create headings, bold and italics etc without merging html with data
> variables.
> any ways I am right now doing the hamd coding myself.  may be I have
> overlooked some module.
> right now I am in the process of trying templayer.

This somewhat neglected Wiki page may provide some guidance:

http://wiki.python.org/moin/Templating

Dynamically styling data can be somewhat awkward, and I'd probably
have some kind of last-minute transformation on my data to add
presentation-related attributes and then feed it to a generic
templating system.

> but my main issue is that when I use the
> webbrowser.open("file:///home/myname/report.html"), webbroser opens
> but the page does not come up.
> there is certainly some thing wrong in what I am giving to the open function.
> can some one correct me?

Which system and Web browser are you using? Perhaps you'd be
interested in the desktop module instead:

http://www.python.org/pypi/desktop

Paul



From paul at boddie.org.uk  Tue Oct 30 12:27:05 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Tue, 30 Oct 2007 09:27:05 -0700
Subject: A Python 3000 Question
In-Reply-To: <13ieep3nspq3e5b@corp.supernews.com>
References: <fg5fku$5c1$1@solaris.cc.vt.edu><87abq1mxqc.fsf@merkury.smsnet.pl>
	<fg5j5p$a3t$1@solaris.cc.vt.edu> <5onb6eFneqbaU4@mid.uni-berlin.de>
	<13ieep3nspq3e5b@corp.supernews.com>
Message-ID: <1193761625.398263.15410@57g2000hsv.googlegroups.com>

On 30 Okt, 15:09, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
>

[Language "OOness", hand-waving]

> I disagree. I think they *do* take away from the overall Object-Oriented
> nature of the language, and that is A Very Good Thing Indeed.

But everything is an object in Python: nothing has been taken
away. ;-) Anyway, I don't sympathise with the "methods for everything"
mentality, either, but there's a reason for Java doing things this way
- for Python, in fact, you actually get something extra over and above
Java's implementation of object-orientation.

[...]

> http://steve-yegge.blogspot.com/2006/03/execution-in-kingdom-of-nouns...

As always, a pinch of salt is required when reading the works of
certain commentators (or skimming them, for those making slightly
better use of their time). Some choice words sum up the attitude we
see in works like this:

http://steve-yegge.blogspot.com/2006/03/execution-in-kingdom-of-nouns.html#c114516329036008490

Thankfully, various decisions in the design of Python and its built-in
types and functions let us leave such squabbles to eat up the time of
the Ruby and Java fanboys.

Paul



From offhand303 at gmail.com  Wed Oct  3 11:07:57 2007
From: offhand303 at gmail.com (MV)
Date: Wed, 3 Oct 2007 17:07:57 +0200
Subject: I/O error
Message-ID: <1f9042490710030807k277a16b6m506dbd932005c5ce@mail.gmail.com>

Hi all,

I recently started getting the following error:  *Can't save config file,
I/O error: file() constructor not accessible in restrictive mode
* The app I am using is called Nicotine+ ( www.nicotine-plus.org ).
According to the developper N+ does not use restrictive mode for anything.

Can anyone help me out with this one? Any help appreciated.

OffHand
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071003/7f8784f7/attachment.html>

From allen.fowler at yahoo.com  Tue Oct 16 00:10:39 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: 15 Oct 2007 21:10:39 -0700
Subject: Simple HTML template engine?
In-Reply-To: <iSCQi.45164$RX.32456@newssvr11.news.prodigy.net>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<iSCQi.45164$RX.32456@newssvr11.news.prodigy.net>
Message-ID: <1192492568.743634.298430@e9g2000prf.googlegroups.com>

On Oct 15, 1:26 am, John Nagle <na... at animats.com> wrote:
> allen.fowler wrote:
> > Hello,
>
> > Can anyone recommend a simple python template engine for generating
> > HTML that relies only on the Pyhon Core modules?
>
> > No need for caching, template compilation, etc.
>
> > Speed is not a major issue.
>
> > I just need looping and conditionals. Template inheritance would be a
> > bonus.
>
>      HTMLTemplate is a minimal system for that sort of thing.
> It doesn't drag in some big "framework".
>
>                                         John Nagle

Thanks...
Wait a sec... this is a Perl module...

Am I missing something?  :)


Allen



From nagle at animats.com  Thu Oct  4 12:14:55 2007
From: nagle at animats.com (John Nagle)
Date: Thu, 04 Oct 2007 16:14:55 GMT
Subject: pickle and __slots__
In-Reply-To: <1191513088.578638.90270@d55g2000hsg.googlegroups.com>
References: <1191513088.578638.90270@d55g2000hsg.googlegroups.com>
Message-ID: <3k8Ni.3410$4V6.2826@newssvr14.news.prodigy.net>

JL wrote:
> Hello,
> 
> I am trying to pickle an object, and I get:
> 
> TypeError: a class that defines __slots__ without defining
> __getstate__ cannot be pickled
> 
> I didn't find __slots__ in the object or the class. Is there a way to
> find it, or to to know which object or class causes the problem?
> 
> Thanks
> 
    Is this a subclass?  Look at the parent classes.

					John Nagle


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct  4 07:34:51 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 13:34:51 +0200
Subject: migrating to packages
In-Reply-To: <874ph79sw7.fsf@mulj.homelinux.net>
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
	<87hcl7jsn0.fsf@mulj.homelinux.net>
	<4704a3a5$0$5110$426a34cc@news.free.fr>
	<874ph79sw7.fsf@mulj.homelinux.net>
Message-ID: <4704cfc8$0$15826$426a74cc@news.free.fr>

Hrvoje Niksic a ?crit :
> Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> writes:
> 
>> it's quite common to use the __init__.py of the package (as
>> explained by Ben) as a facade to the internal organization of the
>> package, so you can change this internal organization without
>> breaking client code.
> 
> We agree on that.  It is the OP who *wants* to access his modules
> directly without ever naming the package.  

To be exact, he wants to reorganize it's source code (splitting a file 
that's getting too big AFAICT) without impacting client code. And this 
is a common use case for a package - which package is given the same 
name as the to-be-reorganized module, and uses imports in the 
__init__.py to expose the same API as the module did.

> That is why I think he is
> missing the point of having a package in the first place.

MHO opinion is that *you* are missing *one* of the point*s* of having 
packages.

>>> That way, if someone creates another module with using the same
>>> name (mymodule), it won't conflict with yours.  If you don't want
>>> to change mymodule to mypackage.mymodule, why use a package in the
>>> first place?
>> Because you have too much code to keep it in a single file.
> 
> There is no "single file", the OP already has modules A and B.

Let's see:
"""I have a single file with several classes, wich i want to separate"""

"""We have been using this MYCLASES in the from MYCLASES import B syntax"""

So the starting point is a single module. The OP already splitted it 
indeed, and now asks how to *not* change client code's import 
statements, ie how to make the newly created package exposing the same 
API as the single-module did.


From joost at cassee.net  Fri Oct  5 05:56:21 2007
From: joost at cassee.net (Joost Cassee)
Date: Fri, 05 Oct 2007 11:56:21 +0200
Subject: Strange generator problem
In-Reply-To: <1191576893.725144.185090@y42g2000hsy.googlegroups.com>
References: <aac13$470602b1$54298df6$10176@news2.tudelft.nl>
	<1191576893.725144.185090@y42g2000hsy.googlegroups.com>
Message-ID: <7264$47060a49$54298df6$12115@news2.tudelft.nl>

On 05/10/2007 11:34, Paul Hankin wrote:

> Lists aren't copied when they're yielded,

Duh! Thanks for your sharp eye.

-- 
Joost Cassee
http://joost.cassee.net


From jcd at sdf.lonestar.org  Thu Oct 11 09:24:50 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Thu, 11 Oct 2007 09:24:50 -0400
Subject: Problem with MySQL cursor
In-Reply-To: <fel7m3$btq$03$1@news.t-online.com>
References: <fel7m3$btq$03$1@news.t-online.com>
Message-ID: <20071011132450.GA20065@sdf.lonestar.org>

On Thu, Oct 11, 2007 at 03:14:30PM +0200, Florian Lindner wrote regarding Problem with MySQL cursor:
> 
> Traceback (most recent call last):
>   File "manage.py", line 90, in ?
>     addDomain(domainName)
>   File "manage.py", line 27, in addDomain
>     executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)
>   File "manage.py", line 22, in executeSQL
>     cursor.execute(sql, args)
>   File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line 163, in
> execute
>     self.errorhandler(self, exc, value)
>   File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line 35,
> in defaulterrorhandler
>     raise errorclass, errorvalue
> _mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL
> syntax; check the manual that corresponds to your MySQL server version for
> the right syntax to use near ''domains' ('domain') VALUES ('xgm.de')' at
> line 1")
> 
> I see the error: 2 opening quotes but only 1 closing around domains. But
> where do they come from?
> 
> Note that there are no quotes at print sql % args.
> 

No, there are no double quote issues.  The first quote is provided by the error message, and is paired with the quote after the closed parenthesis in ('xgm.de')'.  It is not part of your SQL.

Cheers,
Cliff


From mal at egenix.com  Thu Oct  4 05:10:26 2007
From: mal at egenix.com (M.-A. Lemburg)
Date: Thu, 04 Oct 2007 11:10:26 +0200
Subject: List of objects X Database
In-Reply-To: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
References: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
Message-ID: <4704AE02.4040009@egenix.com>

MindMaster32 wrote:
> I am writing a script that has to read data from an ASCII file of
> about 50 Mb and do a lot of searches and calculations with that data.
> That would be a classic problem solved by the use of a database
> (SQLite would suit just fine), but that would require the user to
> install more packages other than python itself, and that I am trying
> to avoid.
>
> Since the data is not too large, I wonder if there is another way to
> store all data in memory and work with it more or less like a
> database, doing searches and working with datafields.
> 
> This is not clear to me how can be implemented. I thought of creating
> a class with the data structure, and creating a list of objects of
> that class, each one containing one line of data from the "database".
> 
> Any thoughts or suggestions?

Python 2.5 ships with SQLite and also supports in-memory
storage of the data.

-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Services directly from the Source  (#1, Oct 04 2007)
>>> Python/Zope Consulting and Support ...        http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ...             http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
________________________________________________________________________

:::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! ::::


   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611


From jadamson at partners.org  Tue Oct  9 09:21:51 2007
From: jadamson at partners.org (Joel J. Adamson)
Date: Tue, 09 Oct 2007 09:21:51 -0400
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<see-36543E.18592809102007@lust.ihug.co.nz>
	<1191911045.604596.50110@19g2000hsx.googlegroups.com>
Message-ID: <87k5pw1l00.fsf@W0053328.mgh.harvard.edu>

gnuist006 at gmail.com writes:

> On Oct 8, 10:59 pm, Barb Knox <s... at sig.below> wrote:
>
>>
>> Lambda calculus.  Instead of function A returning to its caller, the
>> caller provides an additional argument (the "continuation") which is a
>> function B to be called by A with A's result(s).  In pure "continuation
>> style" coding, nothing ever "returns" a result.
>>
>> It is easy to mechanically transform normal function-style lambda
>> calculus into continuation-style, but the reverse is not so.
>>
>
> Explanation and reference please

Read R5RS or R6RS, the passage on call-with-current-continuation is similar in both
texts ( http://www.r6rs.org/final/html/r6rs/r6rs.html ).

For lambda calculus, look it up on Wikipedia.  Alonzo Church is the
name you're looking for.

Joel

-- 
Joel J. Adamson
Biostatistician
Pediatric Psychopharmacology Research Unit
Massachusetts General Hospital
Boston, MA  02114
(617) 643-1432
(303) 880-3109


From deets at nospam.web.de  Tue Oct  9 09:34:35 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 15:34:35 +0200
Subject: pytz has so many timezones!
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
Message-ID: <5n1ebbFfok0sU1@mid.uni-berlin.de>

mensanator at aol.com wrote:

> On Oct 8, 1:03 pm, Carsten Haese <cars... at uniqsys.com> wrote:
>> On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com wrote:
>> > For example, Windows has seperate listings for
>>
>> > Central America
>> > Central Time (US & Canada)
>> > Guadalahara, Mexico City, Monterry - New
>> > Guadalahara, Mexico City, Monterry - Old
>> > Saskatchewan
>>
>> > but they are all GMT-6
>>
>> But they could have different rules for Daylight Saving Time.
> 
> Which only matters if you're setting your clock.

That's BS. If I'm supposed to be attending a video-conference that spans a
few continents which is scheduled using a web-app, it's VITAL that I get
the invitation and reminder rendered in MY local timezone, DST included.

And for the matter of 

"""
There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
+12.
"""

who says that timezones have to be separated by one hour each? Why aren't
they separated by 30minutes, or 20, or 10? Or 2 hours? Or why don't we have
a global time?

Your 25 timezones are an abstraction the same way as are the 400 apparently
in use by people all over the world - and last time I checked, there was no
fundamental law in physics or such that limited the allowed or sensible
number of timezones...

Diez


From deets at nospam.web.de  Tue Oct 16 10:06:22 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 16 Oct 2007 16:06:22 +0200
Subject: confused on calculating date difference in days.
References: <mailman.49.1192518819.13605.python-list@python.org>
	<5nj8b8FiilfrU3@mid.uni-berlin.de> <87odez4gz5.fsf@benfinney.id.au>
	<5njb0uFiilfrU4@mid.uni-berlin.de>
	<mailman.64.1192542709.13605.python-list@python.org>
Message-ID: <5njuquFhgdqgU1@mid.uni-berlin.de>

krishnakant Mane wrote:

> hello,
> thanks all of you for providing valuable help.
> right now I am confused about the delta object.
> how can I extract the difference between two dates in terms of day
> using the delta object?
> I tried reading the python docs but did not understand the concept of
> delta object and how can I measure the difference in terms of days
> between two dates.
> I expect that the days would be integers.
> secondly the format of my date is actually "16/10/2007", and this is
> all in varchar field inside a postgresql database.
> I understand that datetime.datetime.strptime would convert this string
> "16/10/2007" into a date object which I can then compare with the
> current date created by datetime.now().
> is that right?
> if yes then please explain me how I can get the delta object to give
> me results in days.

The documentation is very clear about this:

http://docs.python.org/lib/datetime-timedelta.html

"""
Instance attributes (read-only):

days  Between -999999999 and 999999999 inclusive
seconds  Between 0 and 86399 inclusive
microseconds  Between 0 and 999999 inclusive
"""

So (date_a - date_b).days will give you what you need.

Diez


From p.atmatzidis at gmail.com  Sun Oct 21 18:22:56 2007
From: p.atmatzidis at gmail.com (Panagiotis Atmatzidis)
Date: Sun, 21 Oct 2007 15:22:56 -0700
Subject: Problem with regexp and text injection
Message-ID: <1193005376.777299.154860@z24g2000prh.googlegroups.com>

Hello,

I want to create a script in python that search for .html files in the
predefined directory and subdirectories. Then it checks if a specific
snippet of code exists in the .html file, if not it injects/adds the
code right below the string <body> otherwise bypasses the file.

I wrote the first part, I managed to write search function and I'm
trying to find my way out of regular expressions reading the manuals.
However I don't know what kind of function and module to use in order
to write this function, re.search(), re.string() or re.match() or
maybe re.compile() ?

I have not much programming experience. Programming is not my cup of
tea.

Can someone help by pointing me to a sample code with comments if
possible.

Regards,

atma



From raims at dot.com  Sat Oct  6 06:45:16 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sat, 6 Oct 2007 12:45:16 +0200
Subject: Cross platform way of finding number of processors on a machine?
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
Message-ID: <1i5k9kn.kxih581ipiy0sN%raims@dot.com>

John <weekender_ny at yahoo.com> wrote:
> Is there a way to find the number of processors on a machine (on linux/
> windows/macos/cygwin) using python code (using the same code/cross
> platform code)?

>From processing <http://cheeseshop.python.org/pypi/processing/0.34> :

def cpuCount():
    '''
    Returns the number of CPUs in the system
    '''
    if sys.platform == 'win32':
        try:
            num = int(os.environ['NUMBER_OF_PROCESSORS'])
        except (ValueError, KeyError):
            pass
    elif sys.platform == 'darwin':
        try:
            num = int(os.popen('sysctl -n hw.ncpu').read())
        except ValueError:
            pass
    else:
        try:
            num = os.sysconf('SC_NPROCESSORS_ONLN')
        except (ValueError, OSError, AttributeError):
            pass
        
    if num >= 1:
        return num
    else:
        raise NotImplementedError

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From andreas.huesgen at arcor.de  Thu Oct 11 10:19:39 2007
From: andreas.huesgen at arcor.de (andreas.huesgen at arcor.de)
Date: Thu, 11 Oct 2007 16:19:39 +0200 (CEST)
Subject: Parsing a commandline from within Python
Message-ID: <9982995.1192112379796.JavaMail.ngmail@webmail14>

Hello,

I am writing a commandline tool in Python which is often feed with lots of commandline arguments. In practice, the commandline already reached a critical length which is to long for Windows (some versions of Windows only support commandlines of up to 2047 characters). To work around this problem, we thought up the idea of bypassing the commandline into a file and then letting Python parse the content of the file the same way, the arguments in sys.argv are parsed.

Is there any buildin function which mimics the behavior of the standard commandline parser (generating a list of strings "foo bar" and "some text" from the commandline <"foo bar" "some text">)?

If not, do you have any other ideas how to handle this problem (increasing commandline length, xml files might be a way)?


Regards,

Andreas Huesgen

Viel oder wenig? Schnell oder langsam? Unbegrenzt surfen + telefonieren
ohne Zeit- und Volumenbegrenzung? DAS TOP ANGEBOT F?R ALLE NEUEINSTEIGER
Jetzt bei Arcor: g?nstig und schnell mit DSL - das All-Inclusive-Paket
f?r clevere Doppel-Sparer, nur  34,95 ?  inkl. DSL- und ISDN-Grundgeb?hr!
http://www.arcor.de/rd/emf-dsl-2


From duncan.booth at invalid.invalid  Thu Oct  4 16:32:12 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 4 Oct 2007 20:32:12 GMT
Subject: What does the syntax [::-1] really mean?
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
	<Xns99BFD8C6B2BF5duncanbooth@127.0.0.1>
Message-ID: <Xns99BFDB14727D0duncanbooth@127.0.0.1>

Duncan Booth <duncan.booth at invalid.invalid> wrote:

> the invariant that you are looking for is that for all non-negative a, b:
>    x[a:b:1] reversed is x[-len(x)+b-1:-len(x)+a-1:-1]
> 
I should of course have said "all a, b in the range 0 <= a <= len(x) and 0 
<= b <= len(x)".


From bj_666 at gmx.net  Sun Oct  7 12:26:31 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 7 Oct 2007 16:26:31 GMT
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
Message-ID: <5msflnFepbdqU1@mid.uni-berlin.de>

On Sun, 07 Oct 2007 16:51:33 +0200, Mathias Panzenboeck wrote:

> import weakref
> 
> class Wrapper(object):
> 	def __init__(self,x):
> 		self.x = weakref.ref(x)
> 
> 	def __call__(self,*args,**kwargs):
> 		x = self.x()
> 		if x is None:
> 			print "lost reference"
> 		else:
> 			return x(*args,**kwargs)
> 
> class Foo(object):
> 	def __init__(self):
> 		self._methods = set()
> 		self._methods.add(Wrapper(self._foo))
> 
> 	def _foo(self):
> 		print "_foo"
> 
> 	def callMethods(self):
> 		for method in self._methods:
> 			method()
> 
> 	def __del__(self):
> 		print "del Foo"
> 
> class Bar(object):
> 	def __init__(self):
> 		self._methods = set()
> 		self._methods.add(self._foo)
> 
> 	def _foo(self):
> 		print "_foo"
> 
> 	def callMethods(self):
> 		for method in self._methods:
> 			method()
> 
> 	def __del__(self):
> 		print "del Bar"
> 
> 
> 
> Now look what happens when I do this:
> 
>>>> f=Foo()
>>>> f.callMethods()
> lost reference
>>>> del f
> del Foo
>>>> b=Bar()
>>>> b.callMethods()
> _foo
>>>> del b
>>>>
> 
> Foo looses the reference to its method but Bar on the other hand has a refloop and
> never gets deleted.

``del b`` just deletes the name `b`.  It does not delete the object. 
There's still the name `_` bound to it in the interactive interpreter. 
`_` stays bound to the last non-`None` result in the interpreter.

Drop all those `__del__()` methods as they prevent the garbage collector
from collecting "cycles".

Ciao,
	Marc 'BlackJack' Rintsch


From thomas at jollans.com  Sat Oct 20 06:25:58 2007
From: thomas at jollans.com (Thomas Jollans)
Date: Sat, 20 Oct 2007 12:25:58 +0200
Subject: what is the difference between the two kinds of brackets?
In-Reply-To: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
Message-ID: <200710201226.06148.thomas@jollans.com>

On Saturday 20 October 2007, narutocanada at gmail.com wrote:
> hi
>
> what is the difference between the two kinds of brackets?
> I tried a few examples but I can't make out any real difference:

Lists are mutable, tuples aren't:

Python 2.4.4 (#2, Aug 16 2007, 00:34:54)
[GCC 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> l = [1,2,3]
>>> t = (1,2,3)
>>> type(l)
<type 'list'>
>>> type(t)
<type 'tuple'>
>>> l[0]
1
>>> t[0]
1
>>> l[0] = 12
>>> t[0] = 12
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: object does not support item assignment
>>>

Also, parentheses can be skipped (as in t = 1,2,3), the comma is the maker for 
a tuple (exception: empty tuple == (), but one-element-tuple == ("foo",))


-- 
      Regards,                       Thomas Jollans
GPG key: 0xF421434B may be found on various keyservers, eg pgp.mit.edu
Hacker key <http://hackerkey.com/>:
v4sw6+8Yhw4/5ln3pr5Ock2ma2u7Lw2Nl7Di2e2t3/4TMb6HOPTen5/6g5OPa1XsMr9p-7/-6
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 196 bytes
Desc: This is a digitally signed message part.
URL: <http://mail.python.org/pipermail/python-list/attachments/20071020/f6d11b49/attachment.sig>

From trekker182 at comcast.net  Mon Oct 22 22:12:40 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Mon, 22 Oct 2007 22:12:40 -0400
Subject: for loop
In-Reply-To: <1193094348.431443.237740@q3g2000prf.googlegroups.com>
References: <mailman.347.1193091482.13605.python-list@python.org>	<5o4m5kFktnthU6@mid.uni-berlin.de>	<1193092630.751179.198560@q5g2000prf.googlegroups.com>
	<1193094348.431443.237740@q3g2000prf.googlegroups.com>
Message-ID: <471D5898.4040802@comcast.net>

Thanks, everyone!  Using everyone's suggestions and points, the program 
is working great now.  Here's the updated code.

:)

import math

def main():
    #Declare and initialize variables
    #starting number of organisms
    organisms = 0
    #average daily population increase as %
    increase = 0.0
    #number of days they will multiply
    days = 0
    #population prediction
    population = 0.0

    #Intro
    print "*********************************************"
    print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
    print "*********************************************"

    print "This program will predict the size of a population of organisms."
    print
    print
    while organisms <=1:
        organisms=input("Please enter the starting number of organisms: ")
        if organisms <=1:
            print "Error. Population must be at least two."
       
    while increase <=0:
        increase=input("Please enter the average daily population 
increase as a percentage (20% = .20): ")
        if increase <=0:
            print "The percent of increase must be positive."

    while days <=0:
        days=input("Please enter the number of days that they will 
multiply: ")
        if days <=0:
            print "The number of days must be positive."
   
    print "         Day                                    Population"
    print "----------------------------------------------------------"
    population = organisms

   
    for p in range (1,days+1):
        if(  p > 1 ):
            population = population + ( population * increase )


        print "\t",p,

mensanator at aol.com wrote:
> On Oct 22, 5:37 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>   
>> On Oct 22, 5:22 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>>
>>
>>
>>
>>
>>     
>>> On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:
>>>       
>>>> #Intro
>>>>     print "*********************************************"
>>>>     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
>>>>     print "*********************************************"
>>>>         
>>>>     print "This program will predict the size of a population of organisms."
>>>>     print
>>>>     print
>>>>     organisms=input("Please enter the starting number of organisms: ")
>>>>         
>>>>     increase=input("Please enter the average daily population increase
>>>> as a percentage (20% = .20): ")
>>>>         
>>>>     days=input("Please enter the number of days that they will multiply: ")
>>>>         
>>>> print "         Day                                    Population"
>>>> print "----------------------------------------------------------"
>>>>         
>>>> for p in range (days):
>>>>         
>>>>     population = organisms * population * increase
>>>>         
>>>>     print days,
>>>>         
>>>>     print "\t\t\t\t",population
>>>>         
>>>> I'm having problems with my for loop here to calculate estimated
>>>> population output to a table.  Instead of knowing how much I want to
>>>> loop it, the loop index is going to be whatever number of days the user
>>>> enters.  When I run my program, it asks the 3 questions above but then
>>>> just dead stops at a prompt which leads me to believe there's something
>>>> wrong with my loop.
>>>>         
>>> It should not run at all as it is indented inconsistently.  If that
>>> problem is corrected it will stop with a `NameError` because you try to
>>> read `population` before anything was assigned to it.
>>>       
>>> Ciao,
>>>         Marc 'BlackJack' Rintsch
>>>       
>> Also, I would guess that you want to print p, not days
>>     
>
> Oh, and your calculation is incorrect. You don't multiply by
> organisms in every loop iteration, organisms is the initial
> value of population, so you can solve the "Name" error by doing
> population = organisms before the for..loop.
>
> And since you're asking for an increase, you don't multiply by the
> percent (as that would decrease the population), but instead by
> 1+increase.
>
> Also, does day==0 represent the first day of increase or the
> initial value? One would normally expect day==0 to be the initial
> value, but as written, day==0 is the first day of increase. I
> would use xrange(1,days+1) instead.
>
> Lastly, you can't have a fraction of an organism, right? You might
> want to print your floating point population rounded to an integer.
>
> population = organisms
> for p in xrange(1,days+1):
>   population = population * (1 + increase)
>   print p,
>   print "\t\t\t\t%0.0f" % (population)
>
> ##  *********************************************
> ##  WELCOME TO THE POPULATION GROWTH CALCULATOR
> ##  *********************************************
> ##  This program will predict the size of a population of organisms.
> ##
> ##
> ##  Please enter the starting number of organisms: 100
> ##  Please enter the average daily population increase as a percentage
> (20% = .20): 0.25
> ##  Please enter the number of days that they will multiply: 8
> ##           Day                                    Population
> ##  ----------------------------------------------------------
> ##  1 				125
> ##  2 				156
> ##  3 				195
> ##  4 				244
> ##  5 				305
> ##  6 				381
> ##  7 				477
> ##  8 				596
>
>
>   



From bbxx789_05ss at yahoo.com  Fri Oct 12 16:18:35 2007
From: bbxx789_05ss at yahoo.com (7stud)
Date: Fri, 12 Oct 2007 13:18:35 -0700
Subject: raw_input() and utf-8 formatted chars
In-Reply-To: <1192216685.923198.279040@v29g2000prd.googlegroups.com>
References: <1192197233.824215.301890@e9g2000prf.googlegroups.com>
	<1192216685.923198.279040@v29g2000prd.googlegroups.com>
Message-ID: <1192220315.602812.155810@z24g2000prh.googlegroups.com>

On Oct 12, 1:18 pm, kyoso... at gmail.com wrote:
> On Oct 12, 1:53 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
>
> > s = 'A\xcc\x88'   #capital A with umlaut
> > print s           #displays capital A with umlaut
>
> > s = raw_input('Enter: ')   #A\xcc\x88
> > print s                    #displays A\xcc\x88
>
> > print len(input)           #9
>
> > It looks like every character of the string I enter in utf-8 is being
> > interpreted literally as 9 separate characters rather than one
> > character.  How do I enter a capital A with an umlaut so that python
> > treats it as one character?
>
> I don't know. This works for me:
>
>
>
> >>> x = raw_input('Enter: ')
> Enter: ?
> >>> len(x)
> 1
>
> I'm using Python 2.4 with Default Source Encoding set to None on
> Windows XP SP2.
>
> Mike

Yeah, but what happens when you enter A\xcc\x88?  And what is it that
your keyboard enters to produce an 'a' with an umlaut?



From maphew at gmail.com  Thu Oct 25 15:45:23 2007
From: maphew at gmail.com (matt wilkie)
Date: Thu, 25 Oct 2007 12:45:23 -0700 (PDT)
Subject: does PyAntlr  come with Antlr download
In-Reply-To: <1193190366.660923.257490@z24g2000prh.googlegroups.com>
References: <1193190366.660923.257490@z24g2000prh.googlegroups.com>
Message-ID: <13414494.post@talk.nabble.com>



chewie54 wrote:
> 
> I want use java2python which requires PyAntlr.    I can't seem to find
> PyAntlr mentioned on the main website for Antlr.
> 

j2py requires antlr 2.7.7 

This is what I did (for windows):

- download and run 2.7.7 msi installer from
http://www.antlr2.org/download.html, un-check all but python options
- run "python c:\antlr\277\sbin\pyantlr.py" install


-- 
View this message in context: http://www.nabble.com/does-PyAntlr--come-with-Antlr-download-tf4681566.html#a13414494
Sent from the Python - python-list mailing list archive at Nabble.com.



From mattheww at chiark.greenend.org.uk  Wed Oct 24 18:05:00 2007
From: mattheww at chiark.greenend.org.uk (Matthew Woodcraft)
Date: 24 Oct 2007 23:05:00 +0100 (BST)
Subject: Hiding tracebacks from end-users
References: <13hs7247ncm67d@corp.supernews.com>
Message-ID: <4tl*Jb-Xr@news.chiark.greenend.org.uk>

Steven D'Aprano  <steve at REMOVE-THIS-cybersource.com.au> wrote:
> I'm writing a command-line application that is meant to be relatively 
> user friendly to non-technical users.

> Consequently, I'd like to suppress Python's tracebacks if an error does 
> occur, replacing it with a more friendly error message. I'm doing 
> something like this:

>try:
>    setup()
>    do_something_useful()
>except KeyboardInterrupt:
>    print >>sys.stderr, "User cancelled"
>    sys.exit(2)
>except Exception, e:
>    if expert_mode:
>        # experts get the full traceback with no hand-holding.
>        raise
>    else:
>        # print a more friendly error message
>        if isinstance(e, AssertionError):
>            msg = "An unexpected program state occurred"
>        elif isinstance(e, urllib2.HTTPError):
>            msg = "An Internet error occurred"
>        else:
>            # catch-all for any other exception
>            msg = "An error occurred"
>        print>>sys.stderr, msg
>        print>>sys.stderr, e
>        sys.exit(1)
>else:
>    sys.exit(0)

> Is this a good approach? Is there another way to suppress the traceback 
> and just print the error message?

There's traceback.format_exception_only().

If the exception value is a unicode object containing characters which
can't be encoded by sys.stderr's encoding, the code above will fail
(give an ugly traceback and fail to display the error message).

format_exception_only() would be less ugly, but it would still fail to
display the error message. So it's safest to check for this case
explicitly and encode with backslashreplace or similar.

In this situation I use bare except and sys.exc_info, rather than
'except Exception', because there are still libraries out there which
raise objects which aren't instances of Exception.

-M-



From mail at microcorp.co.za  Mon Oct 29 13:03:34 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Mon, 29 Oct 2007 19:03:34 +0200
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>	<4725ec3a$0$6623$426a74cc@news.free.fr><Xns99D893230B22Cduncanbooth@127.0.0.1>
	<4725F1B5.80804@tim.thechases.com>
Message-ID: <009f01c81a4d$ff023d80$03000080@hendrik>

"Tim Chase" <python.list at tim.thechases.com>

> > I think you are being a little bit unfair here: help(len) says:
> > 
> > len(...)
> >     len(object) -> integer
> >     
> >     Return the number of items of a sequence or mapping.
> > 
> > which implies that the argument to len has the name 'object' (although in 
> > fact it doesn't have a name). 
> 
> And to confound matters even further for the uninitiated,
> 
> http://docs.python.org/lib/built-in-funcs.html#l2h-45
> 
> says that it's "len(s)" instead (but "len(s=[])" doesn't work either)

Looks like a gotcha to me - its the difference between a keyword
(master = 42) and an assignment  (s='I am a string')

You just can't do that - how is the parser supposed to know that
the second one is an assignment and not a keyword?

len([]) should work, though.

- Hendrik



From paul.hankin at gmail.com  Mon Oct  8 14:13:34 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Mon, 08 Oct 2007 18:13:34 -0000
Subject: Variable scoping rules in Python?
In-Reply-To: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
References: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
Message-ID: <1191867214.799593.106570@y42g2000hsy.googlegroups.com>

On Oct 8, 3:17 pm, joshua.dav... at travelocity.com wrote:
> Ok, I'm relatively new to Python (coming from C, C++ and Java).  I'm
> working on a program that outputs text that may be arbitrarily long,
> but should still line up, so I want to split the output on a specific
> column boundary.  Since I might want to change the length of a column,
> I tried defining the column as a constant (what I would have made a
> "#define" in C, or a "static final" in Java).  I defined this at the
> top level (not within a def), and I reference it inside a function.
> Like this:
>
> COLUMNS = 80
>
> def doSomethindAndOutputIt( ):
>   ...
>   if COLUMNS == 0:
>     COLUMNS = len( output[ 0 ] )

Often it's better to make your global 'constant' an optional argument,
especially if certain values have special meanings to your function.

def doSomethingAndOutputIt(columns = 80):
    ...
    columns = columns or len(output[0])

--
Paul Hankin



From myonov at gmail.com  Tue Oct 23 13:10:12 2007
From: myonov at gmail.com (myonov at gmail.com)
Date: Tue, 23 Oct 2007 17:10:12 -0000
Subject: Hiding tracebacks from end-users
In-Reply-To: <13hs7247ncm67d@corp.supernews.com>
References: <13hs7247ncm67d@corp.supernews.com>
Message-ID: <1193159412.679212.116990@v29g2000prd.googlegroups.com>

On Oct 23, 7:07 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> I'm writing a command-line application that is meant to be relatively
> user friendly to non-technical users.
>
> (Some wags might like to say that "user friendly" and "command-line
> application" are, by definition, contradictory. I disagree.)
>
> Consequently, I'd like to suppress Python's tracebacks if an error does
> occur, replacing it with a more friendly error message. I'm doing
> something like this:
>
> try:
>     setup()
>     do_something_useful()
> except KeyboardInterrupt:
>     print >>sys.stderr, "User cancelled"
>     sys.exit(2)
> except Exception, e:
>     if expert_mode:
>         # experts get the full traceback with no hand-holding.
>         raise
>     else:
>         # print a more friendly error message
>         if isinstance(e, AssertionError):
>             msg = "An unexpected program state occurred"
>         elif isinstance(e, urllib2.HTTPError):
>             msg = "An Internet error occurred"
>         else:
>             # catch-all for any other exception
>             msg = "An error occurred"
>         print>>sys.stderr, msg
>         print>>sys.stderr, e
>         sys.exit(1)
> else:
>     sys.exit(0)
>
> Is this a good approach? Is there another way to suppress the traceback
> and just print the error message?
>
> --
> Steven.

No, I think with try-catch statements only. But this is a good
approach and you have nothing to worry about.



From shriphanip at gmail.com  Thu Oct 11 07:49:05 2007
From: shriphanip at gmail.com (Shriphani)
Date: Thu, 11 Oct 2007 11:49:05 -0000
Subject: gdbm troubles.
Message-ID: <1192103345.052824.166450@y42g2000hsy.googlegroups.com>

dictionary = gdbm.open('dictionary','c')
dictionary['Ellipsize'] = 'Openbox'
dictionary.get('Ellipsize')

the last line generates an attribute error. Can someone tell me what I
am doing wrong?
Regards,
Shriphani Palakodety



From dboddie at trolltech.com  Tue Oct 16 13:03:06 2007
From: dboddie at trolltech.com (David Boddie)
Date: Tue, 16 Oct 2007 19:03:06 +0200
Subject: PyQt ProgressBar
Message-ID: <200710161903.06931.dboddie@trolltech.com>

On Mon Oct 15 14:24:09 CEST 2007, luca72 wrote:

> Hello i have made anly one test like this:
> 
>  from time import sleep
>  barra = QtGui.QProgressBar()
>  barra.setMinimum(0)
>  barra.setMaximum(10)
>  for a in range(10):
>        sleep(1)
>        barra.setValue(a)
>        app.processEvents()
> 
> But the bar remain fix to 0% don't increase.
> 
> can you tell me how to prooced

Can you post a complete runnable code example, either here (if it's short
enough) or to the PyQt mailing list?

Thanks,

David
-- 
David Boddie
Lead Technical Writer, Trolltech ASA


From fabian at syameses.com  Tue Oct 23 12:39:57 2007
From: fabian at syameses.com (=?ISO-8859-1?Q?Fabian_L=F3pez?=)
Date: Tue, 23 Oct 2007 18:39:57 +0200
Subject: ignoring chinese characters parsing xml file
In-Reply-To: <505f13c0710230020h2eeebdbaya8e657592dc47cf3@mail.gmail.com>
References: <mailman.340.1193081085.13605.python-list@python.org>
	<5o4evvFktnthU5@mid.uni-berlin.de>
	<mailman.345.1193088585.13605.python-list@python.org>
	<471D96D9.6070107@web.de>
	<505f13c0710230020h2eeebdbaya8e657592dc47cf3@mail.gmail.com>
Message-ID: <851acc320710230939v5b0fb818s365dd700f4647fa6@mail.gmail.com>

Thanks, I have tried all you told me. It was an error on print statement. So
I decided to catch the exception if I had an UnicodeEncodeError, that is, if
I had chinese/japanese characters because they don't interest to me and it
worked.
The strip_asian function of Ryan didn't work well here, but it's a good idea
for next goals.
Thanks a lot!
Fabian

2007/10/23, limodou <limodou at gmail.com>:
>
> On 10/23/07, Stefan Behnel <stefan.behnel-n05pAM at web.de> wrote:
> > Fabian L?pez wrote:
> > > Thanks Mark, the code is like this. The attrib name is the problem:
> > >
> > > from lxml import etree
> > >
> > > context = etree.iterparse("file.xml")
> > > for action, elem in context:
> > >     if elem.tag == "weblog":
> > >         print action, elem.tag , elem.attrib["name"],elem.attrib
> ["url"],
> >
> > The problem is the print statement. Looks like your terminal encoding
> (that
> > Python needs to encode the unicode string to) can't handle these unicode
> > characters.
> >
> I agree. For Japanese, you should know the exactly encoding name, and
> convert them, just like:
>
> print text.encoding('encoding')
>
> --
> I like python!
> UliPad <<The Python Editor>>: http://code.google.com/p/ulipad/
> meide <<wxPython UI module>>: http://code.google.com/p/meide/
> My Blog: http://www.donews.net/limodou
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071023/c8aaf190/attachment.html>

From michels at mps.mpg.de  Wed Oct 10 05:23:14 2007
From: michels at mps.mpg.de (Helmut Michels)
Date: Wed, 10 Oct 2007 11:23:14 +0200
Subject: [ANN] Data Plotting Library DISLIN 9.2
Message-ID: <fei5m4$8ur$2@gwdu112.gwdg.de>

Dear Python users,

I am pleased to announce version 9.2 of the data plotting software
DISLIN.

DISLIN is a high-level and easy to use plotting library for
displaying data as curves, bar graphs, pie charts, 3D-colour plots,
surfaces, contours and maps. Several output formats are supported
such as X11, VGA, PostScript, PDF, CGM, WMF, HPGL, TIFF, GIF, PNG,
BMP and SVG.

The software is available for the most C, Fortran 77 and Fortran 90/95
compilers. Plotting extensions for the interpreting languages Perl,
Python and Java are also supported.

DISLIN distributions and manuals in PDF, PostScript and HTML format
are available from the DISLIN home page

      http://www.dislin.de

and via FTP from the server

      ftp://ftp.gwdg.de/pub/grafik/dislin

All DISLIN distributions are free for non-commercial use. Licenses
for commercial use are available from the site http://www.dislin.de.

  -------------------
   Helmut Michels
   Max Planck Institute for
   Solar System Research               Phone: +49 5556 979-334
   Max-Planck-Str. 2                   Fax  : +49 5556 979-240
   D-37191 Katlenburg-Lindau           Mail : michels at mps.mpg.de


From marco at sferacarta.com  Mon Oct 22 08:41:26 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Mon, 22 Oct 2007 14:41:26 +0200
Subject: Iteration for Factorials
In-Reply-To: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
Message-ID: <WT0Ti.5012$aa6.3030@tornado.fastwebnet.it>

Py-Fun wrote:

> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.

As opposed to what, a complicated one?


From nagle at animats.com  Mon Oct  8 19:00:46 2007
From: nagle at animats.com (John Nagle)
Date: Mon, 08 Oct 2007 23:00:46 GMT
Subject: Python + Shoutpy + Twisted Locks
In-Reply-To: <mailman.1687.1191876602.2658.python-list@python.org>
References: <1191570955.158128.326560@57g2000hsv.googlegroups.com>	<mailman.1605.1191637291.2658.python-list@python.org>	<1191752909.941272.254560@y42g2000hsy.googlegroups.com>
	<mailman.1687.1191876602.2658.python-list@python.org>
Message-ID: <yEyOi.5243$4V6.5178@newssvr14.news.prodigy.net>

Chris Mellon wrote:
> On 10/7/07, Michel Albert <exhuma at gmail.com> wrote:
>> On Oct 6, 4:21 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar> wrote:
>>> En Fri, 05 Oct 2007 04:55:55 -0300, exhuma.twn <exh... at gmail.com> escribi?:
>>>
>>>> [...] What I found
>>>> is that "libshout" is blocking, which should be fine as the whole
>>>> thing runs in it's separate thread. But the application hangs
>>>> nevertheless while streaming. This effectively blocks out the other
>>>> thread that checks the player status, which then fails to append new
>>>> songs to the queue. So only one song is played when streaming.
>>>> The other threads in my application run fine and don't block the rest
>>>> of the app. So I guess, that the main problem is that blocking occurs
>>>> "outside" the python world and "inside" the libshout world.
>>> Only one thread at a time may be executing Python code; the Global
>>> Interpreter Lock (GIL) ensures the mutual exclusion. Extension modules
>>> (written in C) may use the macros
>>> Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS to release/acquire the GIL
>>> before/after an external blocking call.
>>> I don't know libshout, or how you are doing the binding python-libshout,
>>> but if your analysis is correct it means that the code is not releasing
>>> the GIL at the appropiate points.
>>>
>>> --
>>> Gabriel Genellina
>> Hmmm... ok. I suppose rewriting the whole thing using twisted's
>> deferreds could then solve the problem. Which are basically nothing
>> more than callbacks with a weird name ;) Unfortunately this means that
>> I have to re-think a lot. But in the end I suppose it will pay off.
>>
>> Thanks for taking the time and reading my little essay Gabriel ;)
>>
> 
> Using Twisted won't help if the libshout calls are really blocking the
> main thread.

     Right.

     The whole point of Twisted is that you can't do anything that takes
very long in a Twisted thread, or the whole server will stall.  If you
try to do something ongoing, like streaming, in a Twisted server, you
have to have long-running threads of your own and a scheduling system
to coordinate them with the Twisted threads.

     libshout's "nonblocking" mode isn't very nonblocking.  See

https://trac.xiph.org/browser/icecast/trunk/libshout/examples/nonblocking.c

There's a thread in a loop during playout.  All "nonblocking" seems to do is
defer the waiting from shout_write() to shout_sync().

     It looks like you'll need a separate thread for each stream being played
out, on top of the Twisted machinery.  Or a completely event-driven version
of "libshout" designed for Twisted.

				John Nagle


From carsten at uniqsys.com  Sat Oct 20 22:47:23 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Sat, 20 Oct 2007 22:47:23 -0400
Subject: Selection error...
In-Reply-To: <1192930118.501328.277540@i38g2000prf.googlegroups.com>
References: <1192930118.501328.277540@i38g2000prf.googlegroups.com>
Message-ID: <1192934843.3150.3.camel@localhost.localdomain>

On Sat, 2007-10-20 at 18:28 -0700, Abandoned wrote:
> Hi..
> I want to select datas but some datas give me this error:
> 
> psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
> 0xc720
> HINT:  This error can also happen if the byte sequence does not match
> the encoding expected by the server, which is controlled by
> "client_encoding".
> 
> My select command:
> cursor.execute("SELECT id from templinks where url='%s'"% URL)

Haven't we told you before not to use the % operator to fill values into
a query? Use parameter binding:

cursor.execute("SELECT id from templinks where url=%s", (URL,) )

> This problem occured only select data when i try insert the same data
> it doesn't give me error..
> Note: My database is UTF-8 and the URLS come from different web sites'
> html code

Your string probably contains latin-1 encoded text. Try
URL.decode('latin-1').encode('utf-8') to transcode it into utf-8.

Hope this helps,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From gnuist006 at gmail.com  Tue Oct  9 15:37:53 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 19:37:53 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <m2641g1mgn.fsf@my.address.elsewhere>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<m2641g1mgn.fsf@my.address.elsewhere>
Message-ID: <1191958673.182295.207190@22g2000hsm.googlegroups.com>

On Oct 9, 5:50 am, Matthias Blume <f... at my.address.elsewhere> wrote:
> "." <f... at bar.biz> writes:
> > On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:
>
> >> Again I am depressed to encounter a fundamentally new concept that I
> >> was all along unheard of. Its not even in paul graham's book where i
> >> learnt part of Lisp. Its in Marc Feeley's video.
>
> >> Can anyone explain:
>
> >> (1) its origin
> > One of the lambda papers, I think.  I don't remember which.
>
> This is a common misconception.  There is very little that
> originated from the "lambda" papers.  But they did a marvelous job at
> promoting some of the ideas that existed in the PL community for
> years.
>
> As for the concept of continuations, there is Scott and Strachey's
> work on denotational semantics, and there is Landin's J operator.
> (There's probably more that I am forgetting right now.)
>
> >> (6) any good readable references that explain it lucidly ?
>
> One of the most lucid explanations of definitional interpreters --
> including those that are based on continuation-passing -- are
> explained in J. Reynolds' famous 1971 "Definitional Interpreters for
> Higher-Order Functions" paper.  (It has been re-published in 1998 in
> HOSC.)  The paper also explains how to perform defunctionalization,
> which can be seen as a way to compile (and even hand-compile)
> higher-order programs.
>
> Matthias

Matthias, thanks for the reference, but I dont have access to an
engineering library. I would appreciate, if you have access to paper/
scanner or electronic copy to help many of us out, you are
not just helping me but many will thank you.



From martin at v.loewis.de  Wed Oct 31 12:28:36 2007
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Wed, 31 Oct 2007 17:28:36 +0100
Subject: Python bug tracker now secret?
In-Reply-To: <mailman.698.1193845970.13605.python-list@python.org>
References: <mailman.698.1193845970.13605.python-list@python.org>
Message-ID: <4728ad35$0$7942$9b622d9e@news.freenet.de>

> Though it also means all old links are broken and there's no obvious
> pointer to the new information.

Not all of them, no. For a long time, people could use links of the
form www.python.org/sf/<bugnumber>, and these links continue to work.
Most other links on www.python.org have been fixed.

I believe most people had little or no problems finding the new bug
tracker, in particular if they had seen the announcement.

Regards,
Martin


From steve at REMOVE-THIS-cybersource.com.au  Tue Oct  9 14:08:34 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 09 Oct 2007 18:08:34 -0000
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
Message-ID: <13gngt29ovvcld1@corp.supernews.com>

On Tue, 09 Oct 2007 19:23:37 +0200, Diez B. Roggisch wrote:

> Your believes aside, this is simply wrong. The statement
> 
> a += x
> 
> always leads to a rebinding of a to the result of the operation +.

Not true.

>>> L = []
>>> id(L)
3083496716L
>>> L += [1]
>>> id(L)
3083496716L

It's the same L, not rebound at all.



> I presume you got confused by the somewhat arbitrary difference between
> 
> __add__
> 
> and
> 
> __iadd__
> 
> that somehow suggest there is an in-place-modification going on in case
> of mutables.

The __iFOO__ methods are supposed to do in-place modification if 
possible, but it is up to the class writer to make them do so. In the 
case of your example, you specifically created an __iadd__ method that 
didn't even attempt in-place modification. What did you expect it to do?


> but as the following snippet shows - that's not the case:
> 
> 
> class Foo(object):
>      def __add__(self, o):
>          return "__add__"
> 
>      def __iadd__(self, o):
>          return "__iadd__"
> 
> 
> a = Foo()
> a += 1
> print a
> 
> a = Foo()
> b = Foo()
> c = a + b
> print c
> 
> So you see, the first += overrides a with the returned value of
> __iadd__.

That's because you told it to do that. If you told it to do something 
more sensible, it would have done so. Lists know how to do in-place 
modification:

>>> id(L)  # from above
3083496716L
>>> L *= 5
>>> id(L)
3083496716L
>>> L = L*5
>>> id(L)
3083496972L


-- 
Steven.


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 22:12:04 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 04:12:04 +0200
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <mailman.1591.1191601088.2658.python-list@python.org>
References: <mailman.1576.1191584716.2658.python-list@python.org>	<13gcjeqbhmh152c@corp.supernews.com>	<mailman.1586.1191596681.2658.python-list@python.org>	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
Message-ID: <47069e40$0$16410$426a74cc@news.free.fr>

J. Clifford Dyer a ?crit :
> On Fri, Oct 05, 2007 at 04:11:07PM -0000, Grant Edwards wrote
> regarding Re: Python Magazine: Issue 1 Free!:
> 
>> On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:
>> 
>>>>> I've just been told by the editors at Python Magazine that
>>>>> the first issue is out.
>>>> 
>>>> The first issue is issue number 10?
>>>> 
>>>> That's a bit silly.
>>> 
>>> It's the October edition. They obviously decided to make sure the
>>> month numbering was consistent across the volumes.
>> 
>> I presumed that was the reasoning. It just seems counter-intuitive
>> (and sort of un-Pythonic) to start numbering a sequence of objects
>> at 10. ;)
>> 
> 
> 
> Well, it's also unpythonic to start numbering a sequence at 1, but
> it's clearly the right thing to do in this case.

As far as I'm concerned, if I had to number a magazine about 
programming, I'd obviously start with 0. Then it would be n?1, n?10, 
n?11, n?100 etc !-)



From bj_666 at gmx.net  Tue Oct 16 03:24:32 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 07:24:32 GMT
Subject: int to str in list elements..
References: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
	<1192397897.822099.286260@v29g2000prd.googlegroups.com>
	<unl8h3pj4u5dhs9176bms0iroh1bt0nkq4@4ax.com>
Message-ID: <5nj79gFiilfrU2@mid.uni-berlin.de>

On Tue, 16 Oct 2007 06:18:51 +0000, Tim Roberts wrote:

> John Machin <sjmachin at lexicon.net> wrote:
>>On Oct 15, 4:02 am, Abandoned <best... at gmail.com> wrote:
>>> Hi..
>>> I have a list as a=[1, 2, 3 .... ] (4 million elements)
>>> and
>>> b=",".join(a)
>>> than
>>> TypeError: sequence item 0: expected string, int found
>>> I want to change list to  a=['1','2','3'] but i don't want to use FOR
>>> because my list very very big.
>>
>>What is your worry: memory or time? The result string will be very
>>very very big.
> 
> It's an interesting mental exercise to try to figure out just how large
> that string will be, without using Python.
> 
> I get 30,888,889 bytes...

I think you have an off by one error here.  (One number, not one byte)  :-)

Ciao,
	Marc 'BlackJack' Rintsch


From news at seegers.ws  Tue Oct 23 11:34:38 2007
From: news at seegers.ws (GDI teambuilder)
Date: Tue, 23 Oct 2007 17:34:38 +0200
Subject: iS IT POSSIBLE TO MAKE MONEY ONLINE ??
Message-ID: <ocqTi.11166$fA2.81@nntpserver.swip.net>

              Is it possible to make money online ??
              
              That question appeared to me also when i was looking for an extra
              Income some time ago. My luck ?
              
              I found Global Domains International, ever heard of it ?
              
              Check it out at http://www.freedom.ws/seegers






From greg.ewing at canterbury.ac.nz  Fri Oct 19 23:37:26 2007
From: greg.ewing at canterbury.ac.nz (Greg Ewing)
Date: Sat, 20 Oct 2007 16:37:26 +1300
Subject: ANN: Pyrex 0.9.6.3
In-Reply-To: <1192713444.532809.205200@k35g2000prh.googlegroups.com>
References: <mailman.127.1192636224.13605.python-announce-list@python.org>
	<1192713444.532809.205200@k35g2000prh.googlegroups.com>
Message-ID: <471977F6.2010405@canterbury.ac.nz>

kyosohma at gmail.com wrote:

> Also, I noticed that if I try to download the testing framework, it
> gives me a 404.

That one is fixed now, if you want to try again.

--
Greg


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Mon Oct 15 18:26:08 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Tue, 16 Oct 2007 00:26:08 +0200
Subject: Normalize a polish L
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<MPG.217dbfcba9423866989713@news.individual.de>
	<5nhumqFig4buU1@mid.individual.net>
	<MPG.217ddd73cbc55740989714@news.individual.de>
Message-ID: <5ni7o0Fi0k1tU1@mid.individual.net>

Thorsten Kampe wrote:

> Why do you try to use characters in a character set that does not
> contain these characters? That doesn't make any sense.

I thought KNode was smart enough to switch to UTF-8; obviously, it
isn't.

Regards,


Bj?rn

-- 
BOFH excuse #121:

halon system went off and killed the operators.



From fabrice.witkowski at gmail.com  Tue Oct 16 14:52:22 2007
From: fabrice.witkowski at gmail.com (fabdeb)
Date: Tue, 16 Oct 2007 11:52:22 -0700
Subject: some questions about Python and tkinter
Message-ID: <1192560742.328460.256200@y27g2000pre.googlegroups.com>

Hi every one,
I m a sysadmin who want to know how to use python.
I dont know anything about oriented object programation, i only know
bash and a little perl.
I have some simple questions about python.

the first: what is the differences between a function and a classe?

In which case i should use a function ?
In which case i should use a class ?

The second: there is some pincipals gui toolkit: tkinter , Python Mega-
Widgets, PyGTK, PyQt, FxPy, WxPy

what are the advantages of each one, and in which case i use each of
them?

thanks by advance,

Fabrice.witkowski



From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 18 19:08:28 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 23:08:28 -0000
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192659838.773066.160060@i38g2000prf.googlegroups.com>
	<1192663840.916445.207420@k35g2000prh.googlegroups.com>
Message-ID: <13hfprcfkb0fpd2@corp.supernews.com>

On Wed, 17 Oct 2007 23:06:24 -0700, Ixiaus wrote:

> I know '<<' is shifting x over by n bits; but could you point me to some
> literature that would explain why it is the same as "x*2**n"? (Googling
> only returns bit shift, but doesn't necessarily explain the manner in
> which you are using it)

In decimal, multiplying by ten shifts the digits to the left by one place:

31 * 10 => 310
310 * 10 => 3100
3100 * 10 => 31000

In binary, multiplying by two shifts the bits to the left by one place:

101 * 10 => 1010
1010 * 10 => 10100
10100 * 10 => 101000

Because the underlying numbers are the same regardless of what base we 
use to write it in, bit-shifts to the left are equivalent to repeated 
multiplication by two regardless of the display base. Hence:

>>> 7 << 1
14
>>> 14 << 1
28
>>> 28 << 1
56

or to do it another way:

>>> 7 << 3  # multiplication by 2**3
56



Similarly, a bit-shift to the right is equivalent to dividing by two and 
dropping any remainder.



> I will have to read up more on Generators, but maybe you can give me a
> lowdown on why
> sum([1 << k for k, i in enumerate(reversed(val)) if int(i)]) is less
> efficient than using a Generator (is the generator a 'temporary' list?)
> sum(1 << k for k, i in enumerate(reversed(val)) if int(i))

The list comprehension:

[1 << k for k, i in enumerate(reversed(val)) if int(i)]

creates the entire list first. That potentially can require a lot of 
memory, leading to all sorts of complicated memory shuffles as the list 
is resized, paging, etc. 

Using a generator expression means that you avoid creating the entire 
list all in one go. That saves you memory, which may mean that you save 
time.

However, for small sets of input, it is likely that the overhead of 
creating the generator in the first place outweighs the saving of not 
creating the whole list.

The definition of "small" depends on what you are trying to do. In my 
tests, I have found that sum(list comprehension) is marginally faster 
than sum(generator expression) even for 10,000 items.


-- 
Steven


From girodt at gmail.com  Tue Oct 16 04:50:29 2007
From: girodt at gmail.com (TG)
Date: Tue, 16 Oct 2007 01:50:29 -0700
Subject: numpy : efficient sum computations
Message-ID: <1192524629.077906.76280@t8g2000prg.googlegroups.com>

Hi there.

I want to do some intensive computations with numpy, and I'm
struggling a bit to find myyyyy wayyyyyy. Here is the problem :

m and d are two matrices :

> m.shape = (x,y,a,b)
> d.shape = (a,b)

I want to return
> i.shape = (x,y)
with
> i[x,y] = sum(m[x,y] * d)

I already found that
> m[:,:] * d
will give me a matrix of shape (x,y,a,b) containing the products.

Now I want to sum up on axis 2 and 3. If I do :
> (m[:,:] * d).sum(axis=3).sum(axis=2)
it seems like I get my result.

I'm wondering : is this syntax leading to efficient computation, or is
there something better ?

thanks

Thomas



From kyosohma at gmail.com  Tue Oct 16 15:12:41 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 16 Oct 2007 19:12:41 -0000
Subject: some questions about Python and tkinter
In-Reply-To: <1192560742.328460.256200@y27g2000pre.googlegroups.com>
References: <1192560742.328460.256200@y27g2000pre.googlegroups.com>
Message-ID: <1192561961.343282.128720@q3g2000prf.googlegroups.com>

On Oct 16, 1:52 pm, fabdeb <fabrice.witkow... at gmail.com> wrote:
> Hi every one,
> I m a sysadmin who want to know how to use python.
> I dont know anything about oriented object programation, i only know
> bash and a little perl.
> I have some simple questions about python.
>
> the first: what is the differences between a function and a classe?
>
> In which case i should use a function ?
> In which case i should use a class ?
>
> The second: there is some pincipals gui toolkit: tkinter , Python Mega-
> Widgets, PyGTK, PyQt, FxPy, WxPy
>
> what are the advantages of each one, and in which case i use each of
> them?
>
> thanks by advance,
>
> Fabrice.witkowski

For functions see:

http://docs.python.org/ref/function.html
http://www.penzilla.net/tutorials/python/functions/

For classes see:

http://docs.python.org/tut/node11.html
http://www.diveintopython.org/object_oriented_framework/defining_classes.html

As for GUI toolkits, that is a contentious subject. The two major ones
usually mentioned here are Tkinter and wxPython. Others argue for
PyGTK and pyQT. I recommend to see the following links:

http://wiki.wxpython.org/Choosing_wxPython_over_Tkinter
http://wiki.python.org/moin/GuiProgramming

Tkinter and wxPython are the ones I've used and recommend, although
currently I use wxPython the most. Both are very much cross-platform,
although wxPython may have the edge when it comes to native look on
most platforms and it has more built-in widgets than Tkinter. You
should check them both out and see what you think.

As far as I know, they can be used for pretty much any GUI interface,
so I don't think you have to worry about use cases.

Mike



From bbands at gmail.com  Wed Oct 24 18:39:19 2007
From: bbands at gmail.com (BBands)
Date: Wed, 24 Oct 2007 15:39:19 -0700
Subject: name space problem
In-Reply-To: <mailman.400.1193202985.13605.python-list@python.org>
References: <1193179470.243479.53270@q3g2000prf.googlegroups.com>
	<1193181625.770328.161650@v29g2000prd.googlegroups.com>
	<1193193278.364108.256770@y27g2000pre.googlegroups.com>
	<mailman.400.1193202985.13605.python-list@python.org>
Message-ID: <1193265559.060564.246100@v29g2000prd.googlegroups.com>

Thank you.

    jab



From anandology at gmail.com  Fri Oct 26 08:51:57 2007
From: anandology at gmail.com (Anand)
Date: Fri, 26 Oct 2007 12:51:57 -0000
Subject: object inheritance
In-Reply-To: <mailman.473.1193401915.13605.python-list@python.org>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
Message-ID: <1193403117.710320.44140@e9g2000prf.googlegroups.com>

On Oct 26, 5:31 pm, "Pradeep Jindal" <praddyjin... at gmail.com> wrote:
> Can you tell any specific use case for doing this?

I have many implementaions of a db interface.

SimpleDB - simple implementation
BetterDB - optimized implementation
CachedDB - an implementation with caching of queries
RestrictedDB - implementation with permissions

Now, I want to combine these implementations and use.
Typical use case scenarios are:

db = RestrictedDB(CachedDB(SimpleDB()))
db = RestrictedDB(SimpleDB())
db = RestrictedDB(BetterDB())
db = RestrictedDB(CachedDB(BetterDB())
db = CachedDB(SimpleDB())
etc..





From jo at durchholz.org  Mon Oct 22 16:33:50 2007
From: jo at durchholz.org (Joachim Durchholz)
Date: Mon, 22 Oct 2007 22:33:50 +0200
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
Message-ID: <ffj1f3$fpp$2@online.de>

George Neuner schrieb:
>> 5. This is arguable and trivial, but i think TeX judged as a computer
>> language in particular its syntax, on esthetical grounds, sucks in
>> major ways.
> 
> No one except you thinks TeX is a "computer language".

But it is.
It's Turing-complete.
And yes, it sucks in major ways.
But no, I don't hold that against Knuth. It was designed in days when 
domain-specific languages didn't have a roughly standardized syntax.

(Truth remains truth, regardless of who's upholding it.)

Regards,
Jo


From aisaac at american.edu  Wed Oct 10 01:58:51 2007
From: aisaac at american.edu (Alan Isaac)
Date: Wed, 10 Oct 2007 05:58:51 GMT
Subject: unpickle from URL problem
Message-ID: <vSZOi.5979$rD1.4849@trnddc01>

I am on a Windows box.

I pickle a tuple of 2 simple objects with the pickle module.
It pickles fine.  It unpickles fine.

I upload to a server.
I try to unpickle from the URL.  No luck.  Try it:
x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example1'))

I change the filetype to unix.  I upload again.
I try to unpickle from the URL.  Now it works.  Try it:
x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example2'))

Why the difference?

Thank you,
Alan Isaac


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct  7 10:19:00 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 07 Oct 2007 14:19:00 -0000
Subject: Override 'and' and 'or'
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
Message-ID: <13ghqmkl33t3ra4@corp.supernews.com>

On Sun, 07 Oct 2007 13:52:15 +0000, Dekker wrote:

> Is it possible to override 'and' and/or 'or'?

Not without hacking the Python source code, in which case what you've got 
is no longer Python.

Why do you want to do so?


-- 
Steven.


From grflanagan at yahoo.co.uk  Fri Oct 26 03:41:25 2007
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: Fri, 26 Oct 2007 00:41:25 -0700
Subject: Python and Combinatorics
In-Reply-To: <471fc476$1@news.bezeqint.net>
References: <471fc476$1@news.bezeqint.net>
Message-ID: <1193384485.884960.14910@d55g2000hsg.googlegroups.com>

On Oct 25, 12:20 am, none <""atavory\"@(none)"> wrote:
>         Hello,
>
>         Is there some package to calculate combinatorical stuff like (n over
> k), i.e., n!/(k!(n - k!) ?
>
>         I know it can be written in about 3 lines of code, but still...
>
>         Thanks,
>
>         Ami

http://probstat.sourceforge.net/



From Brad.Johnson at ballardtech.com  Mon Oct  1 20:11:01 2007
From: Brad.Johnson at ballardtech.com (Brad Johnson)
Date: Tue, 2 Oct 2007 00:11:01 +0000 (UTC)
Subject: Reentrancy of Python interpreter
References: <mailman.1260.1191015110.2658.python-list@python.org>
	<87bqbilkdl.fsf@mulj.homelinux.net>
Message-ID: <loom.20071002T000903-549@post.gmane.org>

Hrvoje Niksic <hniksic <at> xemacs.org> writes:

> 
> Brad Johnson <Brad.Johnson <at> ballardtech.com> writes:
> 
> > I have a place where I execute a Python command that calls into C++
> > code which then in turn calls back into Python using the same
> > interpreter. I get a fatal error which is "PyThreadStage_Get: no
> > current thread."
> 
> Does the C++ code call into the interpreter from a different thread?

No.

But, problem has been solved. I enabled thread support for the Python
interpreter and now wrap the code that caused the problem in PyGILState_Ensure
and PyGILState_Release. I'm not sure why this fixed it. My theory is that the
Python interpreter is not reentrant and requires another thread if you call into
it more than once in the same call chain.



From steve at holdenweb.com  Wed Oct  3 17:54:31 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 17:54:31 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fe113c$7ua$3@lust.ihug.co.nz>
References: <13frd6vtarbee75@corp.supernews.com>	<fdtsfu$iq6$03$1@news.t-online.com>	<fdvn34$odf$1@orkan.itea.ntnu.no>
	<85ve9ov971.fsf@lola.goethe.zz>	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<fe113c$7ua$3@lust.ihug.co.nz>
Message-ID: <fe132l$d63$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0 at 4ax.com>, George Neuner
> wrote:
> 
>> Dictionaries used to be the arbiters of the language ...
> 
> No they didn't. Before Doctor Johnson, there were no dictionaries.

And before the Big bang there was nothing (perhaps). What's your point?

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From googlegroupie at coloraura.com  Sat Oct 20 21:20:47 2007
From: googlegroupie at coloraura.com (Daniel Pitts)
Date: Sun, 21 Oct 2007 01:20:47 -0000
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
Message-ID: <1192929647.405490.318720@v29g2000prd.googlegroups.com>

On Oct 20, 2:04 pm, llothar <llot... at web.de> wrote:
> > I love math. I respect Math. I'm nothing but a menial servant to
> > Mathematics.
>
> Programming and use cases are not maths. Many mathematics are
> the worst programmers i've seen because they want to solve things and
> much more often you just need heuristics. Once they are into exact
> world they loose there capability to see the factor of relevance in
> algorithms.
>
> And they almost never match the mental model that the average
> user has about a problem.

I read somewhere that for large primes, using Fermat's Little Theorem
test is *good enough* for engineers because the chances of it being
wrong are less likely than a cosmic particle hitting your CPU at the
exact instant to cause a failure of the same sort.  This is the
primary difference between engineers and mathematicians.



From deets at nospam.web.de  Tue Oct  9 16:27:47 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 22:27:47 +0200
Subject: Static variable vs Class variable
In-Reply-To: <13gngt29ovvcld1@corp.supernews.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
Message-ID: <5n26i7FfmohvU1@mid.uni-berlin.de>

Steven D'Aprano schrieb:
> On Tue, 09 Oct 2007 19:23:37 +0200, Diez B. Roggisch wrote:
> 
>> Your believes aside, this is simply wrong. The statement
>>
>> a += x
>>
>> always leads to a rebinding of a to the result of the operation +.
> 
> Not true.


Yes, it is.

>>>> L = []
>>>> id(L)
> 3083496716L
>>>> L += [1]
>>>> id(L)
> 3083496716L
> 
> It's the same L, not rebound at all.

Just because the __iadd__-operation in the list implemented chose to 
returen a reference to itself - certainly a sensible choice, I never 
doubted that - doesn't change the fact that python rebinds the name on 
the left with whatever __iadd__ returned.

Diez


From gherron at islandtraining.com  Mon Oct 15 10:55:49 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Mon, 15 Oct 2007 07:55:49 -0700
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
Message-ID: <47137F75.1030003@islandtraining.com>

Dmitri O.Kondratiev wrote:
> Gary, thanks for lots of info!
> Python strings are not lists! I got it now. That's a pity, I need two
> different functions: one to reverse a list and one to reverse a string:
True, they are not both lists, but they *are* both sequences, with some
things in common.  In particular xs[::-1] will reverse both types of 
objects.  And even if you roll you own reversal function, you don't need
two.  One will do.

Gary Herron

>
> def reverseList(xs):
>     if xs == []:
>         return xs
>     else:
>         return (reverseList (xs[1:])) + [xs[0]]
>
> def reverseStr(str):
>     if str == "":
>         return str
>     else:
>         return (reverseStr (str[1:])) + str[0]
>
> Ok. Now regarding in-place reversal of a list:
>
> >>> l = [1,2,3]
> >>> l
> [1, 2, 3]
> >>> l.reverse()
> >>> l
> [3, 2, 1]
>
> That was, as I expected. Good.
>
> Then why this ? :
>
> >>> ls = [1,2,3].reverse()
> >>> ls
> >>>
> >>> print [1,2,3].reverse()
> None
> >>>
> I mean, why ls is empty after assignment?
>
> Also, I couldn't find in the Python docs what this form of slicing means:
> xs[::-1]  ?
>
> It works for creating a reversed copy of either a string or a list,
> but what does '::-1' syntax means?
>
> Thanks,
>
> Dmitri O. Kondratiev
> dokondr at gmail.com <mailto:dokondr at gmail.com>
> http://www.geocities.com/dkondr
>
> On 10/15/07, *Gary Herron* < gherron at islandtraining.com
> <mailto:gherron at islandtraining.com>> wrote:
>
>     Dmitri O.Kondratiev wrote:
>     >
>     > The function I wrote (below) reverses lists all right:
>     >
>     > def reverse(xs):
>     >     if xs == []:
>     >         return []
>     >     else:
>     >         return (reverse (xs[1:])) + [xs[0]]
>     >
>     >
>     > >>> reverse ([1,2,3])
>     > [3, 2, 1]
>     > >>>
>     >
>     >
>     > Yet when I try to reverse a string I  get:
>     >
>     > >>> reverse ("abc")
>     >
>     > ...
>     > ...
>     > ...
>     >
>     >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>     >
>     >     return (reverse (xs[1:])) + [xs[0]]
>     >
>     >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>     >
>     >     return (reverse (xs[1:])) + [xs[0]]
>     >
>     >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
>     >
>     >     if xs == []:
>     >
>     > RuntimeError: maximum recursion depth exceeded in cmp
>     >
>     > >>>
>     >
>     > What's wrong? Why recursion never stops?
>     >
>     If you are doing this as an python-learning exercise, then read
>     on.   If
>     you are doing this reversal for real code, then try:
>
>       xs.reverse() for in-place reversal of a list (but not a string), or
>       result = xs[::-1] for creating a reversed copy of either a
>     string or a
>     list
>
>
>     Your recursion stops when xs == [], but when you're stripping
>     characters
>     off a string,  like 'abc', the remaining portion will be 'bc',
>     then 'c',
>     than '', but never [] so you 'll never stop.
>
>     Try:
>
>     if xs == []:
>         return []
>     elif xs == '':
>         return ''
>     else:
>         ...
>
>
>     Gary Herron
>
>
>     >
>     > Thanks,
>     > Dima
>
>
>
>



From jason.dusek at gmail.com  Sat Oct 13 02:08:57 2007
From: jason.dusek at gmail.com (jsnx)
Date: Sat, 13 Oct 2007 06:08:57 -0000
Subject: the secret life of zombies
In-Reply-To: <1192153035.345531.99620@q5g2000prf.googlegroups.com>
References: <1192153035.345531.99620@q5g2000prf.googlegroups.com>
Message-ID: <1192255737.207627.23200@v29g2000prd.googlegroups.com>

I fixed it myself -- I had to install a signal handler and use
nested 'try-expect' stuff. The link points to the new version.




From stefan.behnel-n05pAM at web.de  Mon Oct 29 08:16:26 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Mon, 29 Oct 2007 13:16:26 +0100
Subject: problem opening html file with webbrowser.open
In-Reply-To: <mailman.572.1193654693.13605.python-list@python.org>
References: <mailman.572.1193654693.13605.python-list@python.org>
Message-ID: <4725CF1A.7030705@web.de>

krishnakant Mane wrote:
> as I posted in my previous thread, I am generating html reports for my
> client software.
> I am yet to find a satisfactory module which can help me actually
> create headings, bold and italics etc without merging html with data
> variables.

Maybe this is something for you:

http://codespeak.net/lxml/dev/lxmlhtml.html#creating-html-with-the-e-factory


> but my main issue is that when I use the
> webbrowser.open("file:///home/myname/report.html"), webbroser opens
> but the page does not come up.

Maybe your browser is not in the executable path? Try passing the PATH
environment variable to the Python interpreter and make sure it contains the
directory where your browser is installed.

Also, try requesting a specific browser type instead of the default one, and
use its controller object. Read the docs of the webbrowser module for that:

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

Stefan


From pyth0nc0d3r at gmail.com  Thu Oct  4 15:56:13 2007
From: pyth0nc0d3r at gmail.com (Lamonte Harris)
Date: Thu, 4 Oct 2007 14:56:13 -0500
Subject: TwistedMatrix missing OpenSSL?
Message-ID: <eb79828c0710041256g254a7b23m4cf3eed0f2b6b6b1@mail.gmail.com>

Where do I get it?  I'm currently running python 2.5
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/a441cf63/attachment.html>

From david at asdf.asdf  Thu Oct 18 20:38:53 2007
From: david at asdf.asdf (bambam)
Date: Fri, 19 Oct 2007 10:38:53 +1000
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com><mailman.30.1191948693.916.python-list@python.org><5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com><5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com><5n39eaFg1m0qU1@mid.uni-berlin.de><1192606439.190757.23530@i13g2000prf.googlegroups.com><Xns99CC5B9CBE886duncanbooth@127.0.0.1><1192608969.051177.167130@q5g2000prf.googlegroups.com><Xns99CC6729BAC69duncanbooth@127.0.0.1><1192612830.110577.153790@i13g2000prf.googlegroups.com><8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1><871wbu55pp.fsf@mulj.homelinux.net>
	<13hbvu6oc742l02@corp.supernews.com>
Message-ID: <13hfv4ssddmom40@corp.supernews.com>



"Steven D'Aprano" <steve at REMOVE-THIS-cybersource.com.au> wrote in message 
news:13hbvu6oc742l02 at corp.supernews.com...
> On Wed, 17 Oct 2007 13:41:06 +0200, Hrvoje Niksic wrote:
>
>> The current implementation of += uses __add__ for addition and __iadd__
>> for addition that may or may not be in-place.  I'd like to know the
>> rationale for that design.
>
> Everything you need is in the PEP:
>
> http://www.python.org/dev/peps/pep-0203/
>
>
>
> -- 
> Steven.

Which illustrates that the proposal, while simplified for implementation,
is not exactly what was desired*

""" is both more readable and less error prone, because it is
    instantly obvious to the reader that it is <x> that is being
    changed, and not <x> that is being replaced
"""

As we see from this thread, it is not instantly obvious to the reader;
the meaning of "changed, not replaced" is ambiguous.

[david]

* That is, unless ambiguity was the desideratum 




From duncan.booth at invalid.invalid  Wed Oct 24 03:52:46 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 24 Oct 2007 07:52:46 GMT
Subject: Speed of Nested Functions & Lambda Expressions
References: <1193154050.424718.298030@i13g2000prf.googlegroups.com>
Message-ID: <Xns99D35A5451510duncanbooth@127.0.0.1>

beginner <zyzhu2000 at gmail.com> wrote:

> It is really convenient to use nested functions and lambda
> expressions. What I'd like to know is if Python compiles fn_inner()
> only once and change the binding of v every time fn_outer() is called
> or if Python compile and generate a new function object every time. If
> it is the latter, will there be a huge performance hit? Would someone
> give some hint about how exactly Python does this internally?

You can use Python's bytecode disassembler to see what actually gets 
executed here:

>>> def fn_outer(v):
    a=v*2
    def fn_inner():
        print "V:%d,%d" % (v,a)

    fn_inner()

    
>>> import dis
>>> dis.dis(fn_outer)
  2           0 LOAD_DEREF               1 (v)
              3 LOAD_CONST               1 (2)
              6 BINARY_MULTIPLY     
              7 STORE_DEREF              0 (a)

  3          10 LOAD_CLOSURE             0 (a)
             13 LOAD_CLOSURE             1 (v)
             16 BUILD_TUPLE              2
             19 LOAD_CONST               2 (<code object fn_inner at 
01177218, file "<pyshell#3>", line 3>)
             22 MAKE_CLOSURE             0
             25 STORE_FAST               1 (fn_inner)

  6          28 LOAD_FAST                1 (fn_inner)
             31 CALL_FUNCTION            0
             34 POP_TOP             
             35 LOAD_CONST               0 (None)
             38 RETURN_VALUE        
>>> 

When you execute the 'def' statement, the two scoped variables a and v 
are built into a tuple on the stack, the compiled code object for the 
inner function is also pushed onto the stack and then the function is 
created by the 'MAKE_CLOSURE' instruction. This is then stored in a 
local variable (STORE_FAST) which is then loaded and called.

So the function definition is pretty fast, BUT notice how fn_inner is 
referenced by STORE_FAST/LOAD_FAST whereas a and v are referenced by 
LOAD_DEREF/STORE_DEREF and LOAD_CLOSURE.

The code for fn_inner also uses LOAD_DEREF to get at the scoped 
variables:

  4           0 LOAD_CONST               1 ('V:%d,%d')
              3 LOAD_DEREF               1 (v)
              6 LOAD_DEREF               0 (a)
              9 BUILD_TUPLE              2
             12 BINARY_MODULO       
             13 PRINT_ITEM          
             14 PRINT_NEWLINE       
             15 LOAD_CONST               0 (None)
             18 RETURN_VALUE        

(its a bit harder to disassemble that one, I stuck a call to dis.dis 
inside fn_outer to get that)

If you do some timings you'll find that LOAD_DEREF/STORE_DEREF are 
rather slower than LOAD_FAST/STORE_FAST, so while the overhead for 
creating the function is minimal you could find that if you access the 
variables a lot (even in fn_outer) there may be a measurable slow-down.

If timings show that it is a code hotspot then you might find it better 
to nest the function but pass any required values in as parameters (but 
if you don't have evidence for this just write whatever is clearest).


From wilson at afn.org  Wed Oct 10 12:53:50 2007
From: wilson at afn.org (Jim B. Wilson)
Date: Wed, 10 Oct 2007 16:53:50 GMT
Subject: Building Binary Packages
References: <1192026935.627151.160810@19g2000hsx.googlegroups.com>
Message-ID: <pan.2007.10.10.16.49.52@afn.org>

On Wed, 10 Oct 2007 14:35:35 +0000, kyosohma wrote:

> I am trying to figure out how to build binaries for Python packages and
> I've done it with MinGW. 

Apparently, you still can: http://tinyurl.com/yb4bps


From arkanes at gmail.com  Tue Oct  9 16:51:04 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 15:51:04 -0500
Subject: storing meta data on dictionary keys
In-Reply-To: <217848.22692.qm@web81002.mail.mud.yahoo.com>
References: <217848.22692.qm@web81002.mail.mud.yahoo.com>
Message-ID: <4866bea60710091351o4c5bec2dg699c2c848aeff86e@mail.gmail.com>

On 10/9/07, Andreas Kraemer <akraemer at sbcglobal.net> wrote:
>
> I sometimes find it useful to store meta data on dictionary keys, like in
> the following example:
>
> class Dict(dict):
>   def __init__(self,*args,**kw):
>     self.key_dict = {}
>     super(Dict,self).__init__(*args,**kw)
>   def __setitem__(self,k,v):
>     self.key_dict[k] = k
>     super(Dict,self).__setitem__(k,v)
>   def get_key(self,key):
>     return self.key_dict[key]
>
> class Str(str): pass
>
> >>> friends = Dict()
> >>> friends[Str('John')] = ['Bill','Jack','Isabelle']
> >>> friends[Str('Jim')] = ['John','Bob']
> >>> friends[Str('Isabelle')] = ['John','Christine','Anabelle']
> >>> friends.get_key('John').hair_color = 'brown'
> >>> friends.get_key('Jim').hair_color = 'red'
> >>> friends.get_key('Isabelle').hair_color = 'green'
> >>> friends
> {'Jim': ['John', 'Bob'], 'John': ['Bill', 'Jack', 'Isabelle'], 'Isabelle':
> ['John', 'Christine', 'Anabelle']}
> >>> friends.get_key('Isabelle').hair_color
> 'green'
>
> A more sensible, realistic example are attributes of graph nodes (e.g.
> color, shape, etc)  in the networkx package, where node objects are stored
> as keys of (nested) dictionaries.
>
> Is there any particular reason why the built-in dictionary does not define a
> get_key() method, but only keys(), iterkeys(), and has_key() ?
>
> Cheers,
>
> Andreas
>

Because, by definition, if you have the key then you don't need to get
it from the dict. What you're doing here is conflating 2 mappings into
one: string value->person and person->values.  Use 2 explicit dicts to
make it clear what you're going, or use one dict and store a tuple of
values: person, friends = d["John"].


From simon at brunningonline.net  Wed Oct 31 10:22:45 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Wed, 31 Oct 2007 14:22:45 +0000
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <loom.20071031T132748-928@post.gmane.org>
References: <loom.20071031T132748-928@post.gmane.org>
Message-ID: <8c7f10c60710310722s7b60604alc708c69f5746a7a3@mail.gmail.com>

On 10/31/07, jelle <jelleferinga at gmail.com> wrote:
> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found,
> should't the .find method return 0 rather than -1?
> this breaks the
>
> if check.find('something'):
>     do(somethingElse)

print 'ughughugh'.find('ugh')

;-)

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From deets at nospam.web.de  Tue Oct  9 13:23:37 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 19:23:37 +0200
Subject: Static variable vs Class variable
In-Reply-To: <mailman.30.1191948693.916.python-list@python.org>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
Message-ID: <5n1rosFftvtbU1@mid.uni-berlin.de>

> In point #3, you really bind a name to a value. As you probably know, in 
> Python, there are names and objects. The initial value of the name 'a' 
> is 1. It is an immutable object. The "+=" operator usually increments a 
> value of an object. However, because the 'int' type is immutable, the += 
> operator will rather rebind this variable to a newly created value. I 
> believe this is what is happening here.

Your believes aside, this is simply wrong. The statement

a += x

always leads to a rebinding of a to the result of the operation +. I 
presume you got confused by the somewhat arbitrary difference between

__add__

and


__iadd__

that somehow suggest there is an in-place-modification going on in case 
of mutables.

but as the following snippet shows - that's not the case:


class Foo(object):
     def __add__(self, o):
         return "__add__"

     def __iadd__(self, o):
         return "__iadd__"


a = Foo()
a += 1
print a

a = Foo()
b = Foo()
c = a + b
print c

So you see, the first += overrides a with the returned value of __iadd__.

The reason for the difference though is most probably what you yourself 
expected: thus it's possible to alter a mutable in place.

Diez


From ivonet at gmail.com  Mon Oct 15 09:00:26 2007
From: ivonet at gmail.com (Ivo)
Date: Mon, 15 Oct 2007 15:00:26 +0200
Subject: Simple HTML template engine?
In-Reply-To: <mailman.14.1192437519.13605.python-list@python.org>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<mailman.14.1192437519.13605.python-list@python.org>
Message-ID: <47136373$0$28772$e4fe514c@dreader22.news.xs4all.nl>

Ciprian Dorin Craciun wrote:
>     Have you tried CherryPy? http://www.cherrypy.org/
> 
>     It's not a template engine, but a simple web server engine, and
> you could code your conditionals and loops directly in Python... When
> I have tried it, it looked very nice and easy.
> 
>     Ciprian.
> 
> 
> On 10/15/07, allen.fowler <allen.fowler at yahoo.com> wrote:
>> Hello,
>>
>> Can anyone recommend a simple python template engine for generating
>> HTML that relies only on the Pyhon Core modules?
>>
>> No need for caching, template compilation, etc.
>>
>> Speed is not a major issue.
>>
>> I just need looping and conditionals. Template inheritance would be a
>> bonus.
>>
>> I've seen Genshi and Cheetah, but they seem way too complex.
>>
>> Any ideas?
>>
>> I'm sure I could build something myself, but I'm sure this has already
>> been done quite a few times.  Why re-invent the wheel, right?
>>
>>
>> Thank you,
>> Allen

I concur completely!
My site http://IvoNet.nl is completely written in python and based on a 
very early release of cherrypy.

gr,
Ivo.


From fw3 at hotmail.co.jp  Tue Oct 16 18:44:00 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Tue, 16 Oct 2007 22:44:00 +0000
Subject: how to convert string to number?
In-Reply-To: <4715086F.6080008@tim.thechases.com>
References: <mailman.68.1192547833.13605.python-list@python.org>
	<1192556770.939866.249160@e9g2000prf.googlegroups.com>
	<BLU107-W45441799345E5042B783C8B49C0@phx.gbl>
	<4715086F.6080008@tim.thechases.com>
Message-ID: <BLU107-W28931CCBBCC8FA5D810166B49C0@phx.gbl>


Hi, Tim,
 
Thanks for your help. For some reason, I only get your reply from the forum.
 
This is not a homework problem since I have left the school long time ago. I am new to Python and find it very interesting so I decided to try to port a big project from matlab to python. To prove the value of the python, I need to find an python way to do it. Otherwise, the result may be slower than matlab. The input file contains many lines of data starts with a label. The data lengths are not the same and the data type is mixed with int and float. Some lines start with comment sign # need to be removed from the dictionary. The mixed int and float really cause me trouble to convert the data efficiently. I will try your suggestion
 
I am really appreciate your help.
 
 
Frank Wang
 
 
> Date: Tue, 16 Oct 2007 13:52:31 -0500> From: python.list at tim.thechases.com> To: fw3 at hotmail.co.jp> CC: python-list at python.org> Subject: Re: how to convert string to number?> > > I have struggling to efficiently convert a string list to> > number. Here is my problem. I have a file that contains lines> > such as:> > > > data_1 1 1 2 3.5> > > > After I read the data from the file by using readlines(), each> > line contains a string. I use the re moduel to split the line> > into ['data_1', '1','1','2','3.5']. I want to create a> > dictionary which contains> > > > {'data_1':[1 1 2 3.5]}> > > > The problem is I coud not efficiently find a way to convert> > the string to number.> > > > Does anyone know how to create such dictionary efficiently?> > Despite my Spidey-sense tingling that this is a homework > assignment, as similar forms of the question have popped up > several times in the last week, I supress it this time.> > Paraphrasing Andy Dufresne, "Mr. Wang, do you trust your file?"[1]> > If you don't trust the content of your file, you have to know either> > 1) how many columns of data to expect or> 2) the type each should be (int or float)> > If the same type for each is okay, you can use something like> > >>> s = {}> >>> for line in file('in.txt'):> ... k,v = line.rstrip('\n').split(None, 1)> ... s[k] = map(float, v.split())> ...> >>> s> {'data_1': [1.0, 1.0, 2.0, 3.5], 'data_4': [1.0, 1.0, 8.0, 4.5]}> > However, if you want them to be the actual types that evaluating > them would give (thus the trust-your-source issue), you can use this:> > >>> s = {}> >>> for line in file('in.txt'):> ... k,v = line.rstrip('\n').split(None, 1)> ... s[k] = map(eval, v.split())> ...> >>> s> {'data_1': [1, 1, 2, 3.5], 'data_4': [1, 1, 8, 4.5]}> > > Both instances don't try to do anything smart with duplicate > keys, so if you want to append, Bruno Desthuilliers *just* posted > (in the last hour or so) a nice tip on this using > setdefault().append()> > -tkc> > [1]http://www.finestquotes.com/movie_quotes/movie/Shawshank%20Redemption/page/0.htm> > > > > 
_________________________________________________________________
?MSN????????????????????? ?????????????
http://video.msn.co.jp/rvr/default.htm
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/25f7a998/attachment.html>

From jon+usenet at unequivocal.co.uk  Tue Oct 23 11:24:15 2007
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 23 Oct 2007 15:24:15 GMT
Subject: Iteration for Factorials
References: <5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
	<mailman.362.1193126604.13605.python-list@python.org>
	<13hrcfj1gtpia56@corp.supernews.com>
	<mailman.378.1193151468.13605.python-list@python.org>
Message-ID: <slrnfhs4gv.rsn.jon+usenet@snowy.squish.net>

On 2007-10-23, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
> Yuk.  Reminds me of one of the Hitachi processors that
> has a single depth hardware "link register" that tells a 
> subroutine where it was called from.

That's how ARM processors work, and they're everywhere these days.


From diprat7 at gmail.com  Wed Oct 10 14:28:21 2007
From: diprat7 at gmail.com (diprat7 at gmail.com)
Date: Wed, 10 Oct 2007 11:28:21 -0700
Subject: www.yedil.com best hindi entertainment site
Message-ID: <1192040901.003062.187520@o3g2000hsb.googlegroups.com>

www.yedil.com best hindi entertainment site
with vidoes,photo sharing,photo rating features
its really gona rock you
www.yedil.com



From gmguyx at gmail.com  Sat Oct 27 13:39:49 2007
From: gmguyx at gmail.com (gmguyx)
Date: Sat, 27 Oct 2007 10:39:49 -0700
Subject: urllib: cannot open webpage which requires authentication
Message-ID: <1193506789.159708.291010@y27g2000pre.googlegroups.com>

I tried using urllib.urlopen to open a personalized webpage
(my.yahoo.com) but it doesn't work:

print urllib.urlopen(http://my.yahoo.com).read()

Instead of returning my.yahoo.com, it returns a page asking me to log
in.

So then I tried urllib.urlencode:

data = urllib.urlencode({'action': 'https://login.yahoo.com/config/
login?', 'login': <mylogin>, 'passwd': <mypassword>})
print urllib.urlopen(http://my.yahoo.com, data).read()

However, this doesn't work either. Is there a way to do this? Thanks
in advance.



From jeremit0 at gmail.com  Mon Oct 15 19:55:18 2007
From: jeremit0 at gmail.com (jeremito)
Date: Mon, 15 Oct 2007 23:55:18 -0000
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192267814.707741.176570@z24g2000prh.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
	<1192199862.532118.306290@t8g2000prg.googlegroups.com>
	<1192218795.540056.51700@k35g2000prh.googlegroups.com>
	<1192267814.707741.176570@z24g2000prh.googlegroups.com>
Message-ID: <1192492518.067625.197110@v23g2000prn.googlegroups.com>

On Oct 13, 5:30 am, has <has.te... at virgin.net> wrote:
> On 12 Oct, 20:53, jeremito <jerem... at gmail.com> wrote:
>
> > I actually found NodeBox in my googling.  This seems to be a stand
> > alone application.  I need to be able to convert my images to a movie
> > from my code I wrote myself.
>
> Some Mac-specific options:
>
> -QuickTimePlayer is standard on OS X and its scripting interface
> (which you can access from Python via appscript, and is fully usable
> even in unpaid mode) includes an 'open image sequence' command. This
> would be the simplest solution as long as you don't mind launching
> another application to do the work.

I have used this, but I want to automate this so I wanted something I
could call from my Python script.
>
> - The Cocoa API's QTKit class (accessible via PyObjC) includes a -
> addImage:forDuration:withAttributes: method that you could use to
> build up a movie yourself.
>

This sounds like a good option.  I have downloaded and installed
PyObjC and am currently looking for the QTKit class but have been
unsuccessful so far.  A cursory glance at the documentation hasn't
produced any help, yet.  I'll keep looking unless you can point to it
directly.

Thanks again,
Jeremy



From cadet.bramble at gmail.com  Wed Oct 24 20:13:52 2007
From: cadet.bramble at gmail.com (bramble)
Date: Thu, 25 Oct 2007 00:13:52 -0000
Subject: Cross-platform GUI development
In-Reply-To: <slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>
Message-ID: <1193271232.100512.224940@q5g2000prf.googlegroups.com>

On Oct 12, 6:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
>
> I'd recommend wxPython over those becase
>
> 1) native look and feel on all platforms
> 2) doesn't require expensive licensing for non-commercial apps (QT)
> 3) Isn't a pain to install on windows (GTK)
>
> That said, times change and 1-3 may have changed since I last looked
> at it!

My impression has always been that a number of people use wx because
of its API similarities to some MS Windows GUI toolkit or other.



From paul.hankin at gmail.com  Sat Oct 20 12:46:40 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 20 Oct 2007 16:46:40 -0000
Subject: what is the difference between the two kinds of brackets?
In-Reply-To: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
Message-ID: <1192898800.059965.272700@q3g2000prf.googlegroups.com>

On Oct 20, 11:15 am, "narutocan... at gmail.com" <narutocan... at gmail.com>
wrote:
> what is the difference between the two kinds of brackets?
> I tried a few examples but I can't make out any real difference:

The main difference in the language between tuples and lists is that
tuples (...) are immutable, and lists [...] are mutable.  That means
you should use lists rather than tuples if you need a mutable
structure (for example, if you want to extend it later), and use
tuples when you need an immutable structure (for example, if you're
constructing dict keys).

Perhaps my opinion is coloured by using other languages where the
distinction between list and tuple is stronger, but when I don't need
my data to be immutable or mutable, I use something like these rules
of thumb:
If each index has a particular meaning (for example (x, y) for
describing 2d coordinates), use tuples.
If the data is uniform (ie each element of the list/tuple has the same
meaning - for example, all the filenames in a directory), use lists.
If the data has a fixed length, use tuples.
If the data has an unknown - possibly unbounded - length, use lists.
If everything else is equal, use tuples.

HTH
--
Paul Hankin



From martin at v.loewis.de  Tue Oct 23 14:57:30 2007
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Tue, 23 Oct 2007 20:57:30 +0200
Subject: japanese encoding iso-2022-jp in python vs. perl
In-Reply-To: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
References: <1193135850.030196.31170@i38g2000prf.googlegroups.com>
Message-ID: <471e441a$0$11731$9b622d9e@news.freenet.de>

>  var = var.encode("iso-2022-jp", "replace")
>  print var
[...]
> ???????????????
> 
> So, what's the deal?  Why can't python properly encode some of these
> characters?

It's not clear. As Ryan says, it works just fine (and so it does for
me with Python 2.4.4 on Debian).

What Python version are you using, and what is the precise string that
you want to encode? (use "print repr(var)" to report that exact value)

HTH,
Martin


From paul.hankin at gmail.com  Wed Oct 24 12:16:48 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 24 Oct 2007 16:16:48 -0000
Subject: Anagrams
In-Reply-To: <1193241800.343932.23170@k35g2000prh.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
	<1193185723.647144.302410@i13g2000prf.googlegroups.com>
	<1193241800.343932.23170@k35g2000prh.googlegroups.com>
Message-ID: <1193242608.953442.217400@q3g2000prf.googlegroups.com>

On Oct 24, 5:03 pm, sandipm <sandip.m... at gmail.com> wrote:
>  Is "all" inbuilt function in python? what it does?

>>> help(all)
Help on built-in function all in module __builtin__:

all(...)
    all(iterable) -> bool

    Return True if bool(x) is True for all values x in the iterable.

--
Paul Hankin



From dak at gnu.org  Wed Oct 10 06:49:58 2007
From: dak at gnu.org (David Kastrup)
Date: Wed, 10 Oct 2007 12:49:58 +0200
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <85zlyrutux.fsf@lola.goethe.zz>

gnuist006 at gmail.com writes:

> Again I am depressed to encounter a fundamentally new concept that I
> was all along unheard of. Its not even in paul graham's book where i
> learnt part of Lisp. Its in Marc Feeley's video.
>
> Can anyone explain:
>
> (1) its origin
> (2) its syntax and semantics in emacs lisp, common lisp, scheme
> (3) Is it present in python and java ?
> (4) Its implementation in assembly. for example in the manner that
> pointer fundamentally arises from indirect addressing and nothing new.
> So how do you juggle PC to do it.
> (5) how does it compare to and superior to a function or subroutine
> call. how does it differ.

Basically, there is no difference to function/subroutine call.  The
difference is just that there is no "call stack": the dynamic context
for a call is created on the heap and is garbage-collected when it is
no longer accessible.  A continuation is just a reference to the state
of the current dynamic context.  As long as a continuation remains
accessible, you can return to it as often as you like.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum


From stef.mientki at gmail.com  Sat Oct 13 09:12:31 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sat, 13 Oct 2007 15:12:31 +0200
Subject: how to create a pointer, or is there a better solution ?
Message-ID: <4710C43F.3030802@gmail.com>

hello,

I've a program where users can make modules,
by just dumping them in a certain directory,
then they will dynamically link into the program if needed.

One of the communication channels I use,
is a general global file, which should be imported by all user modules.

One of the things a user should be able to do is to create " global 
variables",
which should then be available in all the other program modules.
So the global file contains a list, call JAL_Globals = [],
where each user can append the globals he want to be exposed to the 
outside world (for read only).
Now if these globals are complex items, no problem, I get pointers and 
can access them.
But if these variables are simple, like integers, I get the value only 
once ;-)

How can I create of dynamic pointers, even to simple variables ?
Or is there a better way ?

thanks,
Stef Mientki


From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 22 19:26:14 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 22 Oct 2007 23:26:14 -0000
Subject: calling a function from string
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
	<13hqbqmoqe18m8e@corp.supernews.com>
Message-ID: <13hqccmgom3voae@corp.supernews.com>

On Mon, 22 Oct 2007 23:16:38 +0000, Steven D'Aprano wrote:

>> how could I call a_string as function?
> 
> Others have suggested eval() and exec. Both will work, but have MAJOR
> security implications.

Oh, and they are seriously slower too.

>>> import timeit
>>> timeit.Timer('f("2.3")', 
... 'f = float').repeat() # time using 1st class function
[1.7266130447387695, 0.97645401954650879, 0.97271394729614258]
>>> timeit.Timer('eval("float")("2.3")'
... ).repeat() # time using eval and a string
[20.628923177719116, 19.70452094078064, 19.783280849456787]


-- 
Steven.


From fantus at poczta.fm  Mon Oct  8 01:49:28 2007
From: fantus at poczta.fm (Fantus)
Date: Mon, 08 Oct 2007 07:49:28 +0200
Subject: tinyp2p - trying to get it to work
In-Reply-To: <oqcot4-mkp.ln1@pluto.solar-empire.de>
References: <febk9e$gfe$1@nemesis.news.tpi.pl>
	<oqcot4-mkp.ln1@pluto.solar-empire.de>
Message-ID: <fecg9m$3vk$1@nemesis.news.tpi.pl>

Marc Christiansen pisze:
>> Can anybody help me to solve this? Please. I did browse google but found 
>> nothing.
> 
> I had a (not so quick) look. The code proves its point (i.e. writing a
> very small p2p application is possible), but it is horrible. With only
> one server, the code is broken; maybe it works using multiple servers, I
> didn't test. A quick fix seems to be to change the line
>     pr() and [aug(s) for s in aug(pr()[0])]
> to
>     pr() and [aug(s) for s in aug(pr()[0])] or pr([myU])
> 
> Please don't take tinyp2p.py as an example on writing python. 
> 
> HTH Marc

It seems to be working! Respect.

I know this app is a bit messy but I couldnt't find anything else that 
would implement p2p basics and wouldn't have hundrends or thousands of 
lines of code. I need something very simple and this is fine.

Thank you Marc!


From will at willNOmcguganSPAM.com  Mon Oct 15 06:23:54 2007
From: will at willNOmcguganSPAM.com (Will McGugan)
Date: Mon, 15 Oct 2007 11:23:54 +0100
Subject: Simple HTML template engine?
In-Reply-To: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <47133fbb$0$13935$fa0fcedb@news.zen.co.uk>

allen.fowler wrote:
> Hello,
> 
> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
>
Mako (http://www.makotemplates.org/) sounds like what you want..

Will McGugan
http://www.willmcgugan.com


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct 30 05:00:02 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 10:00:02 +0100
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193691850.854354.301970@d55g2000hsg.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
	<1193691850.854354.301970@d55g2000hsg.googlegroups.com>
Message-ID: <4726f28c$0$11586$426a34cc@news.free.fr>

Fuzzyman a ?crit :
> On Oct 22, 6:43 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
(snip)
>> # Inherit from object. There's no reason to create old-style classes.
> 
> 
> We recently had to change an object pipeline from new style classes to
> old style. A lot of these objects were being created and the *extra
> overhead* of new style classes was killing us. :-)
> 
Maybe a dumb question, but what about __slots__ here ? (NB : never faced 
this kind of problem myself).


From deets at nospam.web.de  Tue Oct  9 06:13:08 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 12:13:08 +0200
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<1191911662.983658.79540@g4g2000hsf.googlegroups.com>
	<1191924032.449463.13290@22g2000hsm.googlegroups.com>
Message-ID: <5n12hkFfhe3hU2@mid.uni-berlin.de>

Tim Bradshaw wrote:

> On Oct 9, 7:34 am, gnuist... at gmail.com wrote:
> 
>> which lambda paper ?
> 
> Are you Ilias?  I think you probably are.

He certainly isn't, but you are right that he smells like he's been living
under a bridge for quite a time...

Diez


From korovev76 at gmail.com  Sat Oct 27 02:07:25 2007
From: korovev76 at gmail.com (korovev76 at gmail.com)
Date: Fri, 26 Oct 2007 23:07:25 -0700
Subject: tuples within tuples
In-Reply-To: <47225d37$0$12186$9b622d9e@news.freenet.de>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
	<5oe73cFmh2htU1@mid.uni-berlin.de>
	<1193407191.002389.17680@v3g2000hsg.googlegroups.com>
	<13i48kmfbjstm53@corp.supernews.com>
	<1193428719.253120.207320@22g2000hsm.googlegroups.com>
	<mailman.486.1193430393.13605.python-list@python.org>
	<47225d37$0$12186$9b622d9e@news.freenet.de>
Message-ID: <1193465245.561118.301920@22g2000hsm.googlegroups.com>

On 26 Ott, 23:33, Stargaming <stargam... at gmail.com> wrote:
 > He certainly is -- *you* are misreading *him*. The nit he's picking
is
> the non-terminated string (quotation mark/apostrophe missing).
>
right, now i got it!

beside this, i'm trying to use the reduceXML function proposed by
Larry.. but I found out that sometimes pyrxp parses the newline too...
By now I guess it's not its fault, but it's becuase of the way the xml
file is written






From byte8bits at gmail.com  Thu Oct 11 11:22:50 2007
From: byte8bits at gmail.com (brad)
Date: Thu, 11 Oct 2007 11:22:50 -0400
Subject: Finding Peoples' Names in Files
Message-ID: <felf4g$q8c$1@solaris.cc.vt.edu>

Crazy question, but has anyone attempted this or seen Python code that 
does? For example, if a text file contained 'Guido' and or 'Robert' and 
or 'Susan', then we should return True, otherwise return False.


From mccredie at gmail.com  Fri Oct 19 13:41:29 2007
From: mccredie at gmail.com (Matt McCredie)
Date: Fri, 19 Oct 2007 10:41:29 -0700
Subject: Control Log File Size
In-Reply-To: <-6293179770656691756@unknownmsgid>
References: <-6293179770656691756@unknownmsgid>
Message-ID: <9e95df10710191041g294351bu6c5f36bf3a1c3b67@mail.gmail.com>

> I've got an application running on linux which writes log files using the
> python logging module. I'm looking for some help and advice to cap the size
> which the file will grow too, something reasonably like 2Mb would be great.
>
>
>
> What is the best way to handle this kind of thing? Can this be done using a
> setting in the logging module? Or is it something I'll have to get the FS to
> handle for me?

Check out the RotatingFileHandler: http://docs.python.org/lib/node413.html

It is part of the logging module and should do what you want.

Examples of using alternative handlers are here:

http://docs.python.org/lib/multiple-destinations.html

Matt


From jcd at sdf.lonestar.org  Wed Oct 24 08:44:52 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Wed, 24 Oct 2007 08:44:52 -0400
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <20071024124452.GA2936@sdf.lonestar.org>

On Wed, Oct 24, 2007 at 12:09:40PM -0000, Alexandre Badez wrote regarding Better writing in python:
> 
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
> 
> I think there is a better way, but I can't see how...
> 

I assume cls.dArguments is a dict, correct?

`for arg in cls.dArguments` takes each *key* for cls.dArguments and assigns it to arg, so the line 'if arg is True' will test the truth value of each key.  I assume (you haven't shown the details here) that your dict looks like this:

cls.dArguments = { 'a': True, 'b': False, 'c': True, 'd': False, '': True, 0: False }

and you want your for loop to do this:

lMandatory == [ 'a', 'c', '' ]
lOptional == [ 'b', 'd', 0 ]

in fact, since it's testing the truth value of the keys, not the values, you will get this:

lMandatory == [ 'a', 'b', 'c', 'd' ]
lOptional == [ '', 0 ]

In no particular order, of course.

Also, `if x is True:` should be written as `if x:`

Actually, come to think of it, what I said above is false, because the string 'a' *is not* the boolean value True, per se: it is *equal to* True.  So if you change `if x is True:` to `if x == True:`  then everything I said above holds true, including that you should change `if x == True:` to `if x:`

As it stands, the only key in your dict that has a snowball's chance in key largo of being marked as mandatory is the boolean value True itself.

Cheers,
Cliff



From gherron at islandtraining.com  Wed Oct 31 18:34:05 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Wed, 31 Oct 2007 15:34:05 -0700
Subject: Print a list to a string?
In-Reply-To: <1193869068.254703.209450@y42g2000hsy.googlegroups.com>
References: <1193869068.254703.209450@y42g2000hsy.googlegroups.com>
Message-ID: <472902DD.6070304@islandtraining.com>

mrstephengross wrote:
> I would like to get the results of a print operation placed in a
> string. For instance, you can very easily create a list and print it
> to stdout:
>
>   x = [1,2,3]
>   print x # Will print [1,2,3]
>
> What if I want the text "[1,2,3]" placed in a string? For instance,
> something like:
>
>   x = [1,2,3]
>   str = ''
>   print str x # x = '[1,2,3]'
>
> Any ideas?
>
> Thanks,
> --Steve
>
>   
Use str(any-object) or repr(any_object) to turn an object into a string
representation of that object.  Use str for a human friendlier
representation, and repr for a more explicit representation. 

Gary Herron



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 11:48:53 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 17:48:53 +0200
Subject: Override 'and' and 'or'
In-Reply-To: <13ghsctf6ksfaa9@corp.supernews.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>	<4708eb82$0$30379$9b4e6d93@newsspool4.arcor-online.net>	<4708ec23$0$30379$9b4e6d93@newsspool4.arcor-online.net>
	<13ghsctf6ksfaa9@corp.supernews.com>
Message-ID: <4708ffbf$0$18278$426a74cc@news.free.fr>

Steven D'Aprano a ?crit :
> On Sun, 07 Oct 2007 16:24:35 +0200, Wildemar Wildenburger wrote:
> 
>> Wildemar Wildenburger wrote:
>>> [whate everyone else wrote :(]
>>>
>>> /W
>> Dangit! 4th of 4.
>> Gotta type quicker.
> 
> 
> That's okay, in two weeks time there will be 139 messages in this thread, 
> it will have devolved into an argument about whether Python's truth-
> testing semantics are better or worse than whatever Java/Lisp/Haskell/
> Ruby does, and *then* somebody will respond to the Original Poster with 
> "customize the __and__ and __or__ methods of your class".

keyboard !-)


From deets at nospam.web.de  Wed Oct 10 02:23:02 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 10 Oct 2007 08:23:02 +0200
Subject: Static variable vs Class variable
In-Reply-To: <13go1jqli5up5d1@corp.supernews.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>	<mailman.30.1191948693.916.python-list@python.org>	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
Message-ID: <5n39eaFg1m0qU1@mid.uni-berlin.de>

>> Yes, it is.
> 
> I'm afraid not.
> 
> As I admitted in my reply to Marc, I overstated my case by saying that L 
> isn't rebound at all. Of course it is rebound, but to itself.
> 
> However, it is not true that += "always leads to a rebinding of a to the 
> result of the operation +". The + operator for lists creates a new list. 
> += for lists does an in-place modification:


It still is true.

a += b

rebinds a. Period. Which is the _essential_ thing in my post, because 
this rebinding semantics are what confused the OP.




>>>> L = []
>>>> M = L
>>>> L += [1]
>>>> M
> [1]
> 
> Compare with:
> 
>>>> L = []
>>>> M = L
>>>> L = L + [1]
>>>> M
> []
> 
> You said:
> 
> "I presume you got confused by the somewhat arbitrary difference between 
> __add__ and __iadd__ that somehow suggest there is an in-place-
> modification going on in case of mutables but as the following snippet 
> shows - that's not the case: ..."

Admittedly, I miss _one_ word here: necessarily before the "an".

> That's an explicit denial that in-place modification takes place, and 
> that's *way* off the mark. I was concentrating so hard on showing in-
> place modification that I glossed over the "return self" part.

And I was concetrating so hard on the rebinding-part, I glossed over the 
in-place-modification part.

Diez


From kyrie at uh.cu  Fri Oct 19 10:56:04 2007
From: kyrie at uh.cu (Luis Zarrabeitia)
Date: Fri, 19 Oct 2007 10:56:04 -0400
Subject: vote for Python - PLEASE
In-Reply-To: <1192762769.971770.297830@e9g2000prf.googlegroups.com>
References: <mailman.193.1192751640.13605.python-list@python.org>
	<1192762769.971770.297830@e9g2000prf.googlegroups.com>
Message-ID: <200710191056.04998.kyrie@uh.cu>

On Thursday 18 October 2007 22:59, mensanator at aol.com wrote:
> > but
> > I'd rather that people got the message that they should do more python
> > development work!)
>
> Maybe the Python community doesn't need your help.

He did try to help, in a morally questionable way, but still in good faith (I 
believe). I wouldn't treat him so harshly, even though I didn't like being 
asked to lie.

Anyway, I went to vote. I do use python with mysql.
Python seems to be winning by a 16% margin, more or less. Impressive... but 
now I have to wonder how many people lied.

-- 
Luis Zarrabeitia (aka Kyrie)
Fac. de Matem?tica y Computaci?n, UH.
http://profesores.matcom.uh.cu/~kyrie


From f.braennstroem at gmx.de  Wed Oct 17 17:47:28 2007
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Wed, 17 Oct 2007 21:47:28 +0000
Subject: pyparsing batch file
Message-ID: <ff5op0$oll$3@ger.gmane.org>

Hi,

me again :-)

I would like to parse a small batch file:

file/read-case kepstop.cas
file/read-data keps1500.dat
solve/monitors/residual/plot no
solve/monitors/residual/print yes
/define/boundary-conditions in velocity-inlet 10 0.1 0.1 no 1
it 500
wd keps1500_500.dat
yes
exit

Right now, I use this little example:

from pyparsing import *

input =
open("/home/fab/HOME/Dissertation/CFD/Fluent/Batch/fluent_batch",
'r')
data = input.read()

#------------------------------------------------------------------------
# Define Grammars
#------------------------------------------------------------------------

integer = Word(nums)
hexnums = Word(alphanums)
end = Literal("\n").suppress()
all = SkipTo(end)
#threadname = dblQuotedString
threadname_read_case = Literal("file/read-case")
threadname_read_data= Literal("file/read-data")
threadname_it = Literal("it")
write_data=Literal("wd")
cas_datei= Word(alphanums)
iteration= Word(nums)
write= Word(alphanums)
file_read_data= "file/read-data " + hexnums.setResultsName("rd")

logEntry = threadname_read_case.setResultsName("threadname")
+ cas_datei.setResultsName("cas_datei")+file_read_data
logEntry = file_read_data
logEntryNew = threadname_it.setResultsName("threadname") +
iteration.setResultsName("iteration")
logEntryWD = write_data.setResultsName("threadname") +
write.setResultsName("write")

#------------------------------------------------------------------------

for tokens in logEntryNew.searchString(data):
????print
????print?"Iteration?Command=\t?"+?tokens.threadname
????print?"Number?of?Iterations=\t?"+?tokens.iteration
????for?x?in?tokens.condition:
???????print?x
????print?50*"-"

for tokens in logEntryWD.searchString(data):
????print
????print?"Write?Data?Command=\t?"+?tokens.threadname
????print?"Data?File?Name=\t?"+?tokens.write
????for?x?in?tokens.condition:
???????print?x
????print?50*"-"

for tokens in logEntry.searchString(data):
????print
????print?"no?idea=\t?"+?tokens.threadname
????print?"Data?File=\t?"+?tokens.rd
????print
????for?x?in?tokens.condition:
???????print?x
????print?50*"-"


Unfortunately, it does not parse the whole file names with
the underscore and I do not know yet, how I can access the
line with 'define/boundary-conditions'. Every 'argument' of
that command should become a separate python variable!?
Does anyone have an idea, how I can achieve this!?
Regards!
Fabian



From gagsl-py2 at yahoo.com.ar  Thu Oct 18 00:30:31 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 01:30:31 -0300
Subject: Bidirectional communication over unix socket (named pipe)
References: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>
	<684b0a740710171420k72c27080mb5402d37d5a81a9c@mail.gmail.com>
Message-ID: <op.t0dlg5nmx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 17 Oct 2007 18:20:06 -0300, Ra?l G?mez C. <nachogomez at gmail.com>  
escribi?:

> BTW: This is the original post:
>
>
> server = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)

As I understand the OP's own response, changing SOCK_DGRAM to SOCK_STREAM  
here solved the issue.

-- 
Gabriel Genellina



From python at rcn.com  Wed Oct 17 02:49:23 2007
From: python at rcn.com (Raymond Hettinger)
Date: Tue, 16 Oct 2007 23:49:23 -0700
Subject: Last iteration?
In-Reply-To: <fevj8a$imh$01$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
Message-ID: <1192603763.894935.39680@e34g2000pro.googlegroups.com>

[Diez B. Roggisch]
> > out:) But I wanted a general purpose based solution to be available that
> > doesn't count on len() working on an arbitrary iterable.

[Peter Otten]
> You show signs of a severe case of morbus itertools.
> I, too, am affected and have not yet fully recovered...

Maybe you guys were secretly yearning for a magical last element
detector used like this:

    for islast, value in lastdetecter([1,2,3]):
        if islast:
            print 'Last', value
        else:
            print value

Perhaps it could be written plainly using generators:

    def lastdetecter(iterable):
        it = iter(iterable)
        value = it.next()
        for nextvalue in it:
            yield (False, value)
            value = nextvalue
        yield (True, value)

Or for those affected by "morbus itertools", a more arcane incantation
would be preferred:

    from itertools import tee, chain, izip, imap
    from operator import itemgetter

    def lastdetecter(iterable):
        "fast iterator algebra"
        lookahead, t = tee(iterable)
        lookahead.next()
        t = iter(t)
        return chain(izip(repeat(False), imap(itemgetter(1),
izip(lookahead, t))), izip(repeat(True),t))


Raymond



From __peter__ at web.de  Fri Oct 19 04:50:57 2007
From: __peter__ at web.de (Peter Otten)
Date: Fri, 19 Oct 2007 10:50:57 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
Message-ID: <ff9r5h$jjj$02$1@news.t-online.com>

Abandoned wrote:

> I'm very confused :(
> I try to explain main problem...

That's always a good first step; try to remember that when you start
your next thread.

> I have a table like this:
> id-1 | id-2 | value
> 23     24       34
> 56     68       66
> 56     98       32455
> 55     62       655
> 56     28       123
> .... ( 3 millions elements)
> 
> I select where id=56 and 100.000 rows are selecting but this took 2
> second. (very big for my project)
> I try cache to speed up this select operation..
> And create a cache table:
> id-1 | all
> 56    {68:66, 98:32455, 62:655}
> 
> When i select where id 56 i select 1 row and its took 0.09 second but
> i must convert text to dictionary..

Before you go on with your odd caching schemes -- is the database properly
indexed? Something like

CREATE UNIQUE INDEX mytable_id1_id2 ON mytable (id-1, id-2);

(actual syntax may differ) might speed up the lookup operation
enough that you can do without caching.

Peter


From exarkun at divmod.com  Tue Oct 30 10:33:14 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 30 Oct 2007 09:33:14 -0500
Subject: logic programming in python (was something about py3k)
In-Reply-To: <13ieep3nspq3e5b@corp.supernews.com>
Message-ID: <20071030143314.8162.1904098821.divmod.quotient.29656@ohm>

On Tue, 30 Oct 2007 14:09:39 -0000, Steven D'Aprano <steve at remove-this-cybersource.com.au> wrote:
>
> [snip]
>
>(Aside: I think it a shame that there is one major paradigm that Python
>doesn't have *any* support for at all: logic programming, like Prolog. I
>don't quite know what it is good for, but I'd like to find out!)
>

If you have some time to experiment, PyPy has some support for logic
programming with Python.

http://codespeak.net/pypy/dist/pypy/doc/objspace-proxies.html#the-logic-object-space

Jean-Paul


From jean-francois at ertf.com  Wed Oct  3 05:40:34 2007
From: jean-francois at ertf.com (Jean-Francois Canac)
Date: Wed, 3 Oct 2007 11:40:34 +0200
Subject: Real time plot
Message-ID: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM>

I am reading a large amount of data from a COM port (or from a file) at a
rate of 20 records per second. It is about positioning of a vehicle on a
race track. 

In each record we have time, position (lat and long) speed, course all from
GPS equipment. I would like to Produce a graph in real time with these
records to see the  vehicle moving on the track. The goal is to study the
vehicle performance and to always have its position, the application would
run around 24 hours.

 

I would like to write the application in Python and I am wondering which
plot interface would be the more appropriate, I have seen matplotlib, but I
do not know how to make real time applications with big amount of data. Is
hippodraw more suited to this use or an other interface?

Many thanks

jfc

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071003/ffea5a5c/attachment.html>

From horpner at yahoo.com  Thu Oct 25 11:07:28 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Thu, 25 Oct 2007 15:07:28 GMT
Subject: about functions question
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
	<1193314722.985517.252220@d55g2000hsg.googlegroups.com>
	<47209ba3$0$4804$426a74cc@news.free.fr>
Message-ID: <slrnfi1b8f.16s.horpner@FIAD06.norwich.edu>

On 2007-10-25, Bruno Desthuilliers
<bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
> The canonical case for small scripts is to have first all
> functions and globals defined, then the main code protected by
> a guard, ie:

There's no reason to "protect" your main code in a small script.

> if __name__ == '__main__':
>    print SOME_CONST
>    if not do_something():
>      try_somethin_else()

That idiom is useful in modules for launching tests or examples
that should not be run when the module is imported.

-- 
Neil Cerutti


From nachogomez at gmail.com  Thu Oct 18 00:43:03 2007
From: nachogomez at gmail.com (=?UTF-8?Q?Ra=C3=BAl_G=C3=B3mez_C.?=)
Date: Thu, 18 Oct 2007 00:43:03 -0400
Subject: Bidirectional communication over unix socket (named pipe)
In-Reply-To: <op.t0dlg5nmx6zn5v@gabriel2.softlabbsas.com.ar>
References: <684b0a740710171411t2c30822ew2309254f39b53898@mail.gmail.com>
	<684b0a740710171420k72c27080mb5402d37d5a81a9c@mail.gmail.com>
	<op.t0dlg5nmx6zn5v@gabriel2.softlabbsas.com.ar>
Message-ID: <684b0a740710172143o4ddd60fn15da73991f76130c@mail.gmail.com>

Nop, it doesn't work, at least for me (python 2.5)...

On 10/18/07, Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote:
>
>
> As I understand the OP's own response, changing SOCK_DGRAM to SOCK_STREAM
> here solved the issue.
>
> --
> Gabriel Genellina
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071018/beb71b79/attachment.html>

From besturk at gmail.com  Mon Oct  1 13:09:08 2007
From: besturk at gmail.com (Abandoned)
Date: Mon, 01 Oct 2007 10:09:08 -0700
Subject: Select as dictionary...
In-Reply-To: <47010e97$0$7777$426a74cc@news.free.fr>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
	<47010e97$0$7777$426a74cc@news.free.fr>
Message-ID: <1191258548.820547.123560@k79g2000hse.googlegroups.com>

On 1 Ekim, 18:13, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> J. Clifford Dyer a ?crit :
>
> > On Mon, Oct 01, 2007 at 03:50:59PM +0200, Bruno Desthuilliers wrote regarding Re: Select as dictionary...:
> >> IIRC, postgres' db-api connector (well, at least one of them - I don't
> >> know which one you're using) has a DictCursor. You should find all you
> >> want to know in the relevant doc.
>
> > Correct me if I'm wrong, but I think the DictCursor would output the following:
>
> > [{'id': 1, 'value': 5}, {'id': 2, 'value': 5}, ...]
>
> > But the OP wanted one dict with IDs as keys:
>
> > {1: 5, 2: 5, ...}
>
> Hmmm... I did answer too fast, indeed. Thanks for pointing that out.

Very very very thanks to everybody.
I'm a new user in this group and you are wonderfull persons :)



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 24 12:11:38 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 24 Oct 2007 18:11:38 +0200
Subject: Better writing in python
In-Reply-To: <5o920pFllmt9U2@mid.individual.net>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<5o920pFllmt9U2@mid.individual.net>
Message-ID: <471f6eb8$0$16430$426a74cc@news.free.fr>

Bjoern Schliessmann a ?crit :
> Alexandre Badez wrote:
>> I'm just wondering, if I could write a in a "better" way this code
>> [...]
>> I think there is a better way, but I can't see how...
> 
> What's "better" for you? Shorter? More performant? More readable?
> Complying with best practice? Closely following a specific
> programming paradigm?

I think the OP meant "more pythonic".



From stefan.behnel-n05pAM at web.de  Wed Oct 10 07:13:51 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Wed, 10 Oct 2007 13:13:51 +0200
Subject: pyxml package not working? No xml.dom.ext.reader module available
	after install.
In-Reply-To: <1192010881.614058.287540@y42g2000hsy.googlegroups.com>
References: <1192005595.981054.150530@22g2000hsm.googlegroups.com>
	<470C97D1.4050300@web.de>
	<1192010881.614058.287540@y42g2000hsy.googlegroups.com>
Message-ID: <470CB3EF.30503@web.de>

Thomas W wrote:
> On 10 Okt, 11:13, Stefan Behnel <stefan.behnel-n05... at web.de> wrote:
>> Thomas W wrote:
>>> I've tried to install the pyxml-package, available athttp://pyxml.sourceforge.net/,
>>> both from source and using some hack on the win32-binary package
>>> available for python2.4, but without luck. After install the module
>>> xml.dom.ext.reader is not available, eventhough the folder, __init__py
>>> and everything is in place.
>>> Why? And could someone please make a win32-binary package of pyxml for
>>> python2.5? Thanks!
>> PyXML has not been actively maintained for some years now. Use ElementTree or
>> lxml instead.
>>
>> http://codespeak.net/lxml
>>
>> Stefan
> 
> But the problem is that I'm using some piece of code that needs pyxml.
> Wouldn't be a problem if I was developing this project myself.

Ah, ok. I was just suggesting that you'd be very lucky if someone came up with
a fresh build or something...

Stefan


From musiccomposition at gmail.com  Mon Oct  1 22:34:11 2007
From: musiccomposition at gmail.com (Benjamin)
Date: Tue, 02 Oct 2007 02:34:11 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <1191292451.096937.63000@50g2000hsm.googlegroups.com>

On Oct 1, 8:04 pm, bramble <cadet.bram... at gmail.com> wrote:
> What is the backstory to why Python includes Tk bindings, as opposed
> to some other set of bindings?
>
> I've written a few little Tkinter-based apps, and it's nice and
> simple. I like it well enough. That said though, I keep feeling the
> gravitational pull toward GTK+. I've been meaning to get the whole
> glade+gtk+python thing happening with my own projects, as soon as time
> allows. Is there resistance in the upper Python echelons to GTK
> because of its LGPL licensing?
>
> Reading Alex's Nutshell book, right off the bat he comments that "The
> most popular Python GUI toolkit today is probably wxPython". But then
> he goes on for 45 pages on Tkinter... Seems like he wanted to write
> that chapter on wx instead...
>
> WxWidgets, the last time I looked at it, seemed awfully like MS
> Window's MFC. The licensing seemed vague at the time, and it looks
> like wx contains an extra layer of GUI library, so I didn't spend any
> real time on it. But, regardless, it seems to get good press among
> python folk (I think I remember ESR noting how it was his GUI toolkit
> of choice).
>
> PyQt has had that issue (IIRC) about needing to pay for it for
> commercial apps, so I can see how there might be resistance to it
> being considered the "standard Python GUI toolkit".
>
> So, it would seem to me that Tkinter *might* remain in Python proper,
> but that I probably wouldn't see much effort put into it. Well, the
> Python standard library docs tell a different story. There's stuff in
> there about Tix, ScrolledText, turtle, and then the "other GUI
> packages" doc page goes on about Python megawidgets (Tk-based) and
> Tkinter3000 Widget Construction Kit (WCK). Wow. Looks like Tkinter is
> still having serious support -- even though in that same doc at the
> bottom notes, "PyGTK, PyQt, and wxPython, all have a modern look and
> feel and far more widgets and better documentation than Tkinter."
>
> So, that leaves me wondering, why is Tkinter still getting so much
> focus in the Python standard library?
>
> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?

Tk was there at the beginning unlike bindings to wxWidgets or QT so it
got all the standard library modules, too and they are still supported
not to break compatability.



From antroy at gmail.com  Mon Oct 22 10:45:48 2007
From: antroy at gmail.com (Ant)
Date: Mon, 22 Oct 2007 07:45:48 -0700
Subject: Iteration for Factorials
In-Reply-To: <1193057676.680959.71780@v23g2000prn.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
Message-ID: <1193064348.526006.183080@q5g2000prf.googlegroups.com>

On Oct 22, 1:26 pm, Py-Fun <lorna.bu... at gmail.com> wrote:
> I'm stuck trying to write a function that generates a factorial of a
> number using iteration and not recursion.  Any simple ideas would be
> appreciated.

The following simple adder functions should give you an idea of how
recursion can be recast as iteration:

def acc(i):
    '''i should be a positive integer'''
    if i > 0:
        return i + acc(i - 1)
    return 0

print "acc", acc(9)

def itt(i):
    '''i should be a positive integer'''
    out = 0

    while i > 0:
        out += i
        i = i - 1

    return out

print "itt", itt(9)

> ...
> Is it a "factorial" though?

Er, no. And neither is mine. You may want to google for the definition
of factorial! Here's a hint:

reduce(operator.mul, range(1, i + 1))

--
Anthony Roy




From george.sakkis at gmail.com  Mon Oct 15 02:43:11 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Mon, 15 Oct 2007 06:43:11 -0000
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <mailman.12.1192429827.13605.python-list@python.org>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<mailman.12.1192429827.13605.python-list@python.org>
Message-ID: <1192430591.455799.77780@q5g2000prf.googlegroups.com>

On Oct 15, 2:30 am, Gary Herron <gher... at islandtraining.com> wrote:
> Dmitri O.Kondratiev wrote:
>
> > The function I wrote (below) reverses lists all right:
>
> > def reverse(xs):
> >     if xs == []:
> >         return []
> >     else:
> >         return (reverse (xs[1:])) + [xs[0]]
>
> > >>> reverse ([1,2,3])
> > [3, 2, 1]
>
> > Yet when I try to reverse a string I  get:
>
> > >>> reverse ("abc")
>
> > ...
> > ...
> > ...
>
> >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
> >     return (reverse (xs[1:])) + [xs[0]]
>
> >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
> >     return (reverse (xs[1:])) + [xs[0]]
>
> >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
>
> >     if xs == []:
>
> > RuntimeError: maximum recursion depth exceeded in cmp
>
> > What's wrong? Why recursion never stops?
>
> If you are doing this as an python-learning exercise, then read on.   If
> you are doing this reversal for real code, then try:
>
>   xs.reverse() for in-place reversal of a list (but not a string), or
>   result = xs[::-1] for creating a reversed copy of either a string or a
> list
>
> Your recursion stops when xs == [], but when you're stripping characters
> off a string,  like 'abc', the remaining portion will be 'bc', then 'c',
> than '', but never [] so you 'll never stop.
>
> Try:
>
> if xs == []:
>     return []
> elif xs == '':
>     return ''
> else:
>     ...

The 'else' clause also breaks for strings: the second operand is a
list, which cannot be concatenated to strings. Here's a version that
works for any type with the common slicing semantics:

def reverse(xs):
     if not xs:
        return xs
     else:
        return reverse(xs[1:]) + xs[:1]

print reverse([1,2,3])
print reverse((1,2,3))
print reverse('123')


George



From skip at pobox.com  Sat Oct 27 09:42:22 2007
From: skip at pobox.com (skip at pobox.com)
Date: Sat, 27 Oct 2007 08:42:22 -0500
Subject: How to include docs using distutils?
Message-ID: <18211.16446.423171.960199@montanaro.dyndns.org>

I have a simple setup.py file:

    #!/usr/bin/env python

    from distutils.core import setup
    setup(name='lockfile',
          author='Skip Montanaro',
          author_email='skip at pobox.com',
          maintainer='Skip Montanaro',
          maintainer_email='skip at pobox.com',
          url='http://www.webfast.com/~skip/python/',
          download_url='http://www.webfast.com/~skip/python/lockfile.tar.gz',
          version='0.1',
          py_modules=['lockfile'],
          data_files=[('doc', ['lockfile.rst'])],
          )

I've used the data_files arg to setup to note where the docs live.  Alas,
the sdist command doesn't include this in the tar file:

    % tar tfz dist/lockfile-0.1.tar.gz 
    lockfile-0.1/
    lockfile-0.1/lockfile.py
    lockfile-0.1/PKG-INFO
    lockfile-0.1/README
    lockfile-0.1/setup.py

I'm a complete distutils novice.  I can't for the life of me understand why
the doc directory isn't included in the tar file.  As far as I can tell
distutils has no explicit provision at all for distributing documentation,
which seems very weird.  What am I missing?

Thanks,

Skip



From fabrice.witkowski at gmail.com  Thu Oct 18 12:47:51 2007
From: fabrice.witkowski at gmail.com (fabdeb)
Date: Thu, 18 Oct 2007 16:47:51 -0000
Subject: some questions about Python and tkinter
In-Reply-To: <5nkh2cFiilfrU8@mid.uni-berlin.de>
References: <1192560742.328460.256200@y27g2000pre.googlegroups.com>
	<5nkh2cFiilfrU8@mid.uni-berlin.de>
Message-ID: <1192726071.090561.151920@e34g2000pro.googlegroups.com>

On Oct 16, 9:17 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Tue, 16 Oct 2007 11:52:22 -0700, fabdeb wrote:
> > the first: what is the differences between a function and a classe?
>
> A class bundles data and functions into one object.
>
> > In which case i should use a function ?
> > In which case i should use a class ?
>
> If you have several functions that operate on the same data it might make
> sense to put all into a class to treat them as one "unit".
>
> > The second: there is some pincipals gui toolkit: tkinter , Python Mega-
> > Widgets, PyGTK, PyQt, FxPy, WxPy
>
> > what are the advantages of each one, and in which case i use each of
> > them?
>
> `Tkinter` is part of the standard library.  If you use that or one of the
> others is a matter of taste to some degree.  In a GNOME environment PyGTK
> may look more natural, under KDE a PyQt or PyKDE based GUI may feel more
> "native".  Another factor for a decision might be the license of the GUI
> toolkit.
>
> Ciao,
>         Marc 'BlackJack' Rintsch

Thanks for all your links and responses .
I have a better comprehension of what i have to do for my program.



From mccredie at gmail.com  Fri Oct 26 18:46:03 2007
From: mccredie at gmail.com (Matimus)
Date: Fri, 26 Oct 2007 22:46:03 -0000
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
Message-ID: <1193438763.190428.134710@q5g2000prf.googlegroups.com>

> - Traling characters at the end of a literal are already used (the L
>   for long).

The trailing L is going away in Python 3.0. For your consideration may
I suggest a '$' prefix. Though, I'm not sure I even support the idea
of a decimal literal, and I'm not even sure if I support the idea of
using a prefix '$' to identify that literal, it seems somewhat
fitting.

So...
Decimal("12.34") -> $12.34

Pros:
 - Easier to see than appended character (I think)
 - Notation is fitting when dealing with monetary values
 - Easy to remember
Cons:
 - Maybe too clever for its own good. Some people may be confused to
find out that it isn't actually a monetary type.

I'm sure there are more...

Matt




From panguohualove at sina.com  Tue Oct  2 21:17:48 2007
From: panguohualove at sina.com (panguohua)
Date: Tue, 02 Oct 2007 18:17:48 -0700
Subject: hello! I am a spammer
Message-ID: <1191374268.076080.76280@22g2000hsm.googlegroups.com>

more information for making money with your blog

www.space666.com


goodwebsite for making money


www.space666.com



From timaranz at gmail.com  Thu Oct 11 20:28:20 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Thu, 11 Oct 2007 17:28:20 -0700
Subject: remove header line when reading/writing files
In-Reply-To: <mailman.115.1192145052.927.python-list@python.org>
References: <1192143175.137620.319470@q5g2000prf.googlegroups.com>
	<470EAFA2.2060409@tim.thechases.com>
	<mailman.115.1192145052.927.python-list@python.org>
Message-ID: <1192148900.396062.122780@i13g2000prf.googlegroups.com>

On Oct 12, 12:23 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> Forgot the enumerate call of all things
>
> > for zipfile in filelist:
> >    for i, line in enumerate(gzip.Gzipfile(zipfile,'r')):
> >            if i: outfile.write(line)
>
> Some days, I'm braindead.
>
> -tkc

I would move the 'if' test outside the loop :

for zipfile in filelist:
    zfiter = iter(gzip.Gzipfile(zipfile,'r'))
    zfiter.next()  # ignore header line
    for i, line in enumerate(fziter):
        outfile.write(line)

I'm not sure if the iter(...) is required.  This will raise a
StopIteration exception if zipfile is empty.

Cheers
Tim



From heikki at osafoundation.org  Wed Oct 10 19:07:39 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Wed, 10 Oct 2007 16:07:39 -0700
Subject: M2Crypto possible intermittent bug
In-Reply-To: <%tcPi.58508$YL5.4581@newssvr29.news.prodigy.net>
References: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>
	<UO7Pi.11918$JD.8995@newssvr21.news.prodigy.net>
	<%tcPi.58508$YL5.4581@newssvr29.news.prodigy.net>
Message-ID: <WZudncXyb6GhxpDanZ2dnUVZ_vKdnZ2d@comcast.com>

John Nagle wrote:
>     Still having trouble reproducing the problem. But somewhere,
> something raised that bogus no-error exception three times.
> Anything that returns "(0, 'Error')" as exception data is a bug.

If you can, build python and m2crypto with debug symbols, and place
breakpoints in |case SSL_ERROR_SYSCALL| blocks (from _ssl.i). Then rerun
the tests. That would be my first guess as to where these might be
coming from.

-- 
  Heikki Toivonen


From schaefer.mp at gmail.com  Wed Oct 17 09:17:32 2007
From: schaefer.mp at gmail.com (schaefer.mp at gmail.com)
Date: Wed, 17 Oct 2007 13:17:32 -0000
Subject: Can you determine the sign of the polar form of a complex number?
Message-ID: <1192627052.254388.217400@e9g2000prf.googlegroups.com>

To compute the absolute value of a negative base raised to a
fractional exponent such as:

z = (-3)^4.5

you can compute the real and imaginary parts and then convert to the
polar form to get the correct value:

real_part = ( 3^-4.5 ) * cos( -4.5 * pi )
imag_part = ( 3^-4.5 ) * sin( -4.5 * pi )

|z| = sqrt( real_part^2 + imag_part^2 )

Is there any way to determine the correct sign of z, or perform this
calculation in another way that allows you to get the correct value of
z expressed without imaginary parts?

For example, I can compute:

z1 = (-3)^-4 = 0,012345679
and
z3 = (-3)^-5 = -0,004115226

and I can get what the correct absolute value of z2 should be by
computing the real and imaginary parts:

|z2| = (-3)^-4.5 = sqrt( 3,92967E-18^2 + -0,007127781^2 ) =
0,007127781

but I need to know the sign.

Any help is appreciated.



but I can know the correct sign for this value.



From martin at v.loewis.de  Tue Oct 30 18:47:01 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 30 Oct 2007 23:47:01 +0100
Subject: why did these companies choose Tcl over Python
In-Reply-To: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <4727B465.1070600@v.loewis.de>

> I would prefer to use Python but can't deny how popular Tcl is,  as
> mentioned above,  so my question is why wasn't Python selected by
> these companies as the choice of scripting languages for their
> product?

I think this question needs to be answered on a case-by-case basis,
but my guess is that it is in most cases historical. Work on Tcl
started in 1988, and it was the first (major?) embeddable scripting
language (that is also free software etc). Python wasn't released
until 1991, and wasn't first recognized as being just as easily
embeddable (and I think early releases weren't as easily embeddable
as today's Python is).

Tcl's original objective was to support circuit design, so people
in that field clearly knew that Tcl worked, but they were likely
unaware of any alternatives (or else the future of these alternatives
may have been uncertain).

So at that time, Tcl would have been the obvious (because only)
choice. Now these products are stuck with Tcl, and redoing all
the work (including the existing extension modules!) in a different
programming language would be a lot of work.

Regards,
Martin


From software at ginstrom.com  Tue Oct  2 02:35:53 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Tue, 2 Oct 2007 15:35:53 +0900
Subject: Wrapper functions and arguments
In-Reply-To: <fdslgf$rq$1@gemini.csx.cam.ac.uk>
References: <fdslgf$rq$1@gemini.csx.cam.ac.uk>
Message-ID: <014801c804be$7b7d84a0$0203a8c0@MOUSE>

> On Behalf Of Jeremy Sanders
> def a(x, y, z):
>   print x, y, z
> def b(x, y, z='fruitbat')
>   print x, y, z
> 
> for func in a, b:
>   def wrapper(func=func, *args, **argsk):
>      # do something
>      func(*args, **argsk)
>   x.append(wrapper)
> 
> x[0](1, 2, 3)
> x[1](1, 2)
> ...
> 
> Is there any way to do this? Can you capture arguments in a 
> tuple and dict, but still receive other keyword arguments? 

I think you're missing one level of wrapping.

>>> def a(x, y, z):
	print x, y, z

>>> def b(x, y, z='fruitbat'):
	print x, y, z

>>> x = []
>>> for func in a, b:
	def wrapper(func):
		def wrapped(*args, **kwds):
			print "wrapped!"
			func(*args, **kwds)
		return wrapped
	x.append(wrapper(func))
	
>>> x[0](1, 2, 3)
wrapped!
1 2 3
>>> x[1](1, 2)
wrapped!
1 2 fruitbat
>>> 

---
Regards,
Ryan Ginstrom



From fabian at syameses.com  Mon Oct 22 15:24:40 2007
From: fabian at syameses.com (=?ISO-8859-1?Q?Fabian_L=F3pez?=)
Date: Mon, 22 Oct 2007 21:24:40 +0200
Subject: ignoring chinese characters parsing xml file
Message-ID: <851acc320710221224w55c9421cpf1973d0658ad84b4@mail.gmail.com>

Hi,
I am parsing an XML file that includes chineses characters, like ^
?u?u?????????w.?????L???????? or ????????????... The problem is that I get an error like:
UnicodeEncodeerror:'charmap' codec can't encode characters in position....
The thing is that I would like to ignore it and parse all the characters
less these ones. So, could anyone help me? I suppose that I can catch an
exception that ignores it or maybe use any function that detects this
chinese characters and after that ignore them.

Thanks!!
Fabian
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/ddda9de8/attachment.html>

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct 26 02:50:54 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 26 Oct 2007 08:50:54 +0200
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <mailman.461.1193347826.13605.python-list@python.org>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>	<4720c5c3$0$20084$426a74cc@news.free.fr>	<1193338993.100383.191300@o80g2000hse.googlegroups.com>	<4721071f$0$12108$426a74cc@news.free.fr>
	<mailman.461.1193347826.13605.python-list@python.org>
Message-ID: <47218e42$0$6578$426a74cc@news.free.fr>

Chris Mellon a ?crit :
> On Thu, 2007-10-25 at 23:13 +0200, Bruno Desthuilliers wrote:
> <snip excellent breakdown>

<blush />

>> Dynamically adding methods to classes is pretty 
>> straightforward, the tricky point is to dynamically add methods to 
>> instances, since the descriptor protocol is only triggered for class 
>> attributes. But you obviously found how to do it using func.__get__(obj, 
>> type(obj)) !-)
>>
> 
> This is the greasy, getting your hands dirty way. I vastly prefer (and
> reccomend) using the new module:

Indeed.


From robin at reportlab.com  Fri Oct  5 07:41:20 2007
From: robin at reportlab.com (Robin Becker)
Date: Fri, 05 Oct 2007 12:41:20 +0100
Subject: WebBased Vector 2D Graphics
In-Reply-To: <5mmlf5FeagctU1@mid.uni-berlin.de>
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
	<5mmlf5FeagctU1@mid.uni-berlin.de>
Message-ID: <470622E0.7080004@chamonix.reportlab.co.uk>

Diez B. Roggisch wrote:
>  cjt22 at bath.ac.uk wrote:
> 
.......
> 
> You certainly need to get on speed with webdevelopment. Otherwise you will
> fail miserably.
> 
> There are several options here:
> 
>  - rendering a server-side image, deliver that embedded in a html-page
> 
>  - render using html tags like DIV and the like, which allow for positioned
> colored rectangles and text, in pixel coordinates
> 
>  - canvas tag, to render 2D-drawing-commands
> 
>  - embedded SVG
> 
> All that can be enriched with AJAX to have that fancy
> realtime-update-thingy.
> 
> Diez

simple rectangles are pretty easy though. I did a progress bar here
http://www.jessikat.plus.com/pbar.html with a bit of javascript.

The other side of the information usually involves ajax call backs to determine 
how much of the job has been done etc etc. I seem to remember doing that for a 
project a while back. As I recall we had a cgi script that did

action "start" start off a long running job that detached itself from the web 
server so the response could be made short

action "query" find out from an output file how much of the job has been done.

A javascript timeout periodically performed the query request and used the 
response to update the ticker.
-- 
Robin Becker



From rsybel at gmail.com  Tue Oct  2 13:50:31 2007
From: rsybel at gmail.com (rsybel at gmail.com)
Date: Tue, 02 Oct 2007 17:50:31 -0000
Subject: Corrupted C Runtime on app exit via Dispatch
Message-ID: <1191347431.078560.189940@o80g2000hse.googlegroups.com>

I'm new to Python, but I am trying to support a product at work. We're
running under Win XP, using Python 2.4.

We're using Python to run optimizations, generating a bunch of test
conditions and having existing products evaluate the solutions.

The programs we're running are MFC apps, built with VS 2003. (Although
they are really old MFC apps). I can run the apps by hand and NEVER
have a problem, only when they are invoked via Python Dispatch.

We invoke a program via Dispatch, run some tests, save the output
file, then tell the program to exit. I've tried various ways to shut
the program down, they don't seem to matter. They all shut down
properly as far as I can tell

The main process has indicated it has exited. The process still exists
in Task Manager for a short while.

After running successfully a few times, the exiting process will
finally crash in "HeapFree" in free.c. Dissecting the remains, the
heap looks like it's already been freed, or it's subtlely corrupted
(only the Blink and Flink pointers are trashed - memory contents look
good).

The crashing code can be almost anything - boost libraries, core code,
CStrings, etc.  It appears this is C Runtime cleanup on exit, it
ALWAYS crashes in crt0dat.c, in the __onexitbegin cleanup loop.

I trying to get a handle on what's happening. Is this a mismatch
library problem? I've gone through and made everything consistent,
using msvcr71.dll. Is this a Python threading incompatibility with
Windows?

My Python exit code looks (at the moment) like this;

            app.ExitApplication()
            app=None
            collect()
            pythoncom.CoUninitialize()

I've imported gc, I was hoping forcing a garbage collection would help
this problem - nothing substantial has come out of that.

At this point, app.ExitApplication closes all documents and processes
a SendMessage(WM_CLOSE,0,0). Nothing fancy.

And, or course, this never happens in Debug mode. Only in release
builds. I've got debug symbols in the main code and in the libraries
we build, but 3rd party DLLs / libs don't have symbols.

Can someone with more Python experience point me in a general
direction?
Thanks



From panguohualove at sina.com  Thu Oct 11 11:32:50 2007
From: panguohualove at sina.com (panguohua)
Date: Thu, 11 Oct 2007 08:32:50 -0700
Subject: a good website for softwares,sports,movies and music ,sex etc.
Message-ID: <1192116770.667176.241210@g4g2000hsf.googlegroups.com>

www.space666.com


good



From nick at craig-wood.com  Mon Oct 29 04:30:15 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 29 Oct 2007 03:30:15 -0500
Subject: cron, python and samba restart
References: <1193516133.163981.43900@o80g2000hse.googlegroups.com>
Message-ID: <slrnfib4pi.k6i.nick@irishsea.home.craig-wood.com>

symbioid <symbioid at gmail.com> wrote:
>  Is there something in the way I'm calling with the subprocess.call()
>  function that's not able to work through cron?  My concern is that I'm
>  using sudo, and that may be where the problem lies.

http://www.gratisoft.us/pipermail/sudo-users/2005-May/002518.html

Todd C. Miller Todd.Miller at courtesan.com wrote:
> Your sudo is configured to only run when there is a tty
> present, whcih is not the case for cron jobs.  Usually this
> is due to a line like the following in sudoers:
> 
>     Defaults	requiretty
> 
> Removing this (or just disabling it for the user who must run the
> cron job) should eliminate the error.  Note that you will also need
> to disable authentication either via the NOPASSWD tag or the
> "authenticate" Defaults option.

Check the PATH in cron also

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From larry.bates at websafe.com  Fri Oct 26 08:34:45 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 26 Oct 2007 07:34:45 -0500
Subject: tuples within tuples
In-Reply-To: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
Message-ID: <s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>

korovev76 at gmail.com wrote:
> Hello everybody.
> 
> I'm wondering how to iterate over a tuple like this
> [A,B,C,D]
> while saving A and C in a list.
> 
> My problem is that C sometimes is a tuple of the same structure
> itself...
> 
> 
> thanks!
> korovev
> 
First of all [A,B,C,D] is a list not a tuple. (A,B,C,D) is a tuple.

Without a better example or explanation of what you are trying to do it is 
difficult, but I'll give it a try:

myTuple=(A,B,C,D)
for n, item enumerate(myTuple):
     if n in (0,2):
         myList.append(item)

-Larry


From paul.melis at gmail.com  Wed Oct 17 04:16:09 2007
From: paul.melis at gmail.com (paul.melis at gmail.com)
Date: Wed, 17 Oct 2007 01:16:09 -0700
Subject: Static variable vs Class variable
In-Reply-To: <Xns99CC5B9CBE886duncanbooth@127.0.0.1>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
Message-ID: <1192608969.051177.167130@q5g2000prf.googlegroups.com>

On Oct 17, 10:00 am, Duncan Booth <duncan.bo... at invalid.invalid>
wrote:
> paul.me... at gmail.com wrote:
> > On Oct 10, 8:23 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> <snip>
> >> rebinds a. Period. Which is the _essential_ thing in my post, because
> >> this rebinding semantics are what confused the OP.
>
> > Doesn't this depend on wether "a" supports __iadd__ or not? Section
> > 3.4.7 of the docs say
>
> > """
> > If a specific method is not defined, the augmented operation falls
> > back to the normal methods. For instance, to evaluate the expression x
> > +=y, where x is an instance of a class that has an __iadd__() method,
> > x.__iadd__(y) is called. If x is an instance of a class that does not
> > define a __iadd__() method, x.__add__(y) and y.__radd__(x) are
> > considered, as with the evaluation of x+y.
> > """
>
> > So if a.__iadd__ exists, a += b is executed as a.__iadd__(b), in which
> > case there's no reason to rebind a.
>
> You misunderstand the documentation, what you quoted doesn't say that
> the assignment is suppressed. If a.__iadd__ exists, a += b is executed
> as a = a.__iadd__(b)
>
> The options for a+=b are:
>
>    a = a.__iadd__(b)
>    a = a.__add__(b)
>    a = b.__radd__(a)
>
> but the assignment always happens, it is only what gets executed for the
> right hand side which varies.

Curious, do you have the relevant section in the docs that describes
this behaviour?

Paul



From carsten at uniqsys.com  Wed Oct 31 10:25:02 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 31 Oct 2007 10:25:02 -0400
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <loom.20071031T132748-928@post.gmane.org>
References: <loom.20071031T132748-928@post.gmane.org>
Message-ID: <1193840703.3408.6.camel@dot.uniqsys.com>

On Wed, 2007-10-31 at 13:31 +0000, jelle wrote:
> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found, 
> should't the .find method return 0 rather than -1?
> this breaks the 
> 
> if check.find('something'):
>     do(somethingElse)
> 
> idiom, which is a bit of a pity I think.

You're using the wrong tool for the job. You only care *whether* the
substring is in the string, but you're asking *where* it is, so you have
to do extra work to translate the answer you get into the answer you
need.

To ask the right question in the first place, use "in" or "not in":

if 'something' in check:
    do(somethingElse)

Also, if string.find returned 0 to say "substring not found", what
should it return for "spam salad".find("spam")?

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 22 18:47:55 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 22 Oct 2007 22:47:55 -0000
Subject: for loop
References: <mailman.347.1193091482.13605.python-list@python.org>
Message-ID: <13hqa4rcg3lqf4@corp.supernews.com>

On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:

> I'm having problems with my for loop here to calculate estimated
> population output to a table.

The code you have posted has inconsistent indentation. It won't run as 
you supply it.


> Instead of knowing how much I want to
> loop it, the loop index is going to be whatever number of days the user
> enters.

Don't use input(), it doesn't do what you think it does.

Use int(raw_input()) instead.



> When I run my program, it asks the 3 questions above but then
> just dead stops at a prompt which leads me to believe there's something
> wrong with my loop.

Correcting the indentation in your code shows that it doesn't "just dead 
stops at a prompt". So either you've posted the wrong code, or you aren't 
telling us something. Is it possible that your program is raising an 
exception telling you that something is wrong?



> I have the exact same setup in another program, but
> the loop index has a specific value.

Loop indexes always have a specific value. I think what you mean is that 
it has a fixed, hard-coded value e.g. range(10) instead of range(x).


> I tried (0,days), (1,days) ect.

Ah, the time-honored technique of "debugging by making random changes".

range(days) is the correct thing to use, provided days is a positive 
whole number greater than zero.


> and I don't think for loops need accumulators, I've tried it with one
> anyways and it still stops.

I thought you said the problem was that the loop didn't run at all? The 
loop is supposed to stop.


> Any idea's?

Yes.

Your code has at least one bug in it. When you run that code, Python 
prints an exception telling you what is wrong. That is useful 
information, don't just ignore it.


-- 
Steven.


From mail at microcorp.co.za  Thu Oct  4 03:53:55 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Thu, 4 Oct 2007 09:53:55 +0200
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz><874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>	<mailman.1489.1191464586.2658.python-list@python.org><87hcl7r1ga.fsf@benfinney.id.au>
	<fe1p1i$2a6$1@sea.gmane.org>
Message-ID: <019401c8065c$13e82d00$03000080@hendrik>

"Steve Holden" <ste...web.com> wrote:

> religious issues for me. It's more like "This problem has a cross head, 
> so I'll need a Philips screwdriver". 

As long as it is not a Pozidrive, that is a commendable attitude.

- Hendrik



From robert.kern at gmail.com  Tue Oct  2 02:12:49 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 02 Oct 2007 01:12:49 -0500
Subject: Using fractions instead of floats
In-Reply-To: <1191301175.225114.283340@50g2000hsm.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>	<1191206183.441075.167450@57g2000hsv.googlegroups.com>	<mailman.1324.1191208415.2658.python-list@python.org>	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>	<1191286998.727959.8010@50g2000hsm.googlegroups.com>	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
	<1191301175.225114.283340@50g2000hsm.googlegroups.com>
Message-ID: <fdsnh1$n6a$1@sea.gmane.org>

mensanator at aol.com wrote:
> On Oct 1, 8:17?pm, richy... at gmail.com wrote:
>> On Oct 1, 9:03 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>>
>>> On Oct 1, 7:20 pm, richy... at gmail.com wrote:
>>>> On Oct 1, 8:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
>>>>>   >>> mpq(1,3)+0.6
>>>>>   mpq(14,15)
>>>> Golly!  That's quite impressive.  And more than a little bit magic as
>>>> well, since 0.6 is definitely not the same as 3/5.  
>>> It's not? Since when?
>> The 0.6 above is a floating point number, mathematically very close to
>> 0.6 but definitely not equal to it, since 0.6 can't be represented
>> exactly as a float.
> 
> Oh, you mean something like this, right?
> 
>>>> import gmpy
>>>> a = 0.6
>>>> a
> 0.59999999999999998
> 
> So, the rational should have 59999999999999998
> in the neumerator and 100000000000000000 in the
> denominator?

Actually (5404319552844595 / 2**53) would be best.

> But it doesn't
> 
>>>> b = gmpy.mpq(a)
>>>> b
> mpq(3,5)
> 
> Why do you suppose that is?

For the same reason that str() does. See below.

> For that matter, why
> does
> 
>>>> str(a)
> '0.6'
> 
> give me an EXACT representation?

It doesn't. It just rounds at a lower number of decimal places than is necessary
to faithfully represent the number. str() is intended to give friendly results,
not strictly correct ones. In this case it happens that float(str(0.6)) == 0.6,
but this is not guaranteed. For most numbers that a user or programmer might
enter, there will only be a relatively small amount of precision necessary, and
float(str(x)) == x will tend to hold. That's why it does this.

> Didn't you just
> say it couldn't be represented exactly?

Yup.

> Which is correct,
> 
>>>> str(a)
> '0.6'
> 
> or
> 
>>>> repr(a)
> '0.59999999999999998'
> 
> ?

The latter.

> How does gmpy make the conversion from float to rational?

gmpy has a configurable transformation between floats and the internal
representation. I believe the default goes through str().

-- 
Robert Kern

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



From gnuist006 at hotmail.com  Mon Oct  8 23:28:53 2007
From: gnuist006 at hotmail.com (gnuist006 at hotmail.com)
Date: Tue, 09 Oct 2007 03:28:53 -0000
Subject: why did MIT drop scheme for python in intro to computing?
In-Reply-To: <fee3jr$2oo$1@agate.berkeley.edu>
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
Message-ID: <1191900533.823209.252590@o3g2000hsb.googlegroups.com>

On Oct 8, 1:23 pm, b... at cs.berkeley.edu (Brian Harvey) wrote:
> "Kjetil S. Matheussen" <k.s.matheus... at notam02.no> writes:
>
> >I don't think your speculations makes very much sence.
>
> Amen.
>
> And, in any case, there's no need to speculate.  MIT has published, on their
> web site, pages and pages of rationale for the new curriculum.
>
> The most important point, imho, is that the programming language was the
> /least/ important aspect of the decision.  The most important aspect was
> the move to an application-based (rather than topic-based) organization
> of the curriculum.  The details flow out of that big shift of focus.

Where is the logic ?

python = application based ?
scheme = topic based ?

Does python have continuations ?

Is python progress or regress to the fortran style of natural
language ?

Dont they both have a great IDE in eclipse with respective plugins?

Does scheme have a gui library?

I really dont follow the logic.



From iansan at gmail.com  Thu Oct 18 17:04:46 2007
From: iansan at gmail.com (IamIan)
Date: Thu, 18 Oct 2007 14:04:46 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192727792.466452.68210@v29g2000prd.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
	<1192639690.306271.298190@z24g2000prh.googlegroups.com>
	<1192661958.052525.163760@e34g2000pro.googlegroups.com>
	<mailman.176.1192721413.13605.python-list@python.org>
	<1192727792.466452.68210@v29g2000prd.googlegroups.com>
Message-ID: <1192741486.648766.21090@e9g2000prf.googlegroups.com>

> > The OP's problem is that he suffers from the delusion that people want
> > to steal the source code for hisCGIscript.

Why is assuming someone may try to get my source CGI delusional?

I'm on a shared server (Dreamhost). The CGI itself has 755 permissions
to execute, but what about folder permissions, etc? If you could
expand on "access to the server, and so on" that would be great.



From mail at microcorp.co.za  Fri Oct  5 02:44:23 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 5 Oct 2007 08:44:23 +0200
Subject: racism kontrol (OT)
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net><mailman.1481.1191444294.2658.python-list@python.org>	<47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net><mailman.1496.1191488830.2658.python-list@python.org>
	<470506fe$0$4518$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <015901c80722$09b50580$03000080@hendrik>

 "Wildemar Wildenburger" <lasses_w...so.net> wrote:


> Hendrik van Rooyen wrote:
> >  "Wildemar Wildenburger" <lasse....eso.net> wrote:
> > 
> >> (By the way: Accusing a German of racism is almost too easy an insult. 
> >> Not that I had taken any, just saying.)
> > 
> > I always thought that it would be insulting to a German if you accused
> > him or her of not being a racist...
> > 
> Very funny, Herr Dutsh-Mann. 

Afrikaans, not Dutch.

>>Dude, hailing from South Africa with a 
> Dutch name, I'd be careful with the word racist. That of course being 
> based on the fact that in South Africa the term never had relevance and 
> thus meaning. Hence I understand that you probably have as much 
> understanding of the term "racism", as we have of "a welcome Jew". Or, 
> for that matter, a "a Dutchman that is pleasant to listen to". Burn! ;)

I really must apologise for my accent - but then I was once mistaken
for a Scot by an Englishwoman in Hong Kong. But you know, it is
like being ugly - its not so bad for the perpetrator, it really bothers 
other people more.

Is there an equivalent of Godwin's law with "Hitler" being replaced
by "Apartheid" ? - there should be, in my opinion.  In that respect
Germany and South Africa are similar  - They both have murky
pasts.

> Sidenote: Its funny that everybody calls the Dutch "Dutch" (when 
> speaking English), which pretty much is the word "deutsch", which, guess 
> what, means "German" (cf. Pennsylvania Dutch). That has always baffled 
> me --- do Dutch people refer to themselves as "Dutch" when speaking 
> dutch? The term for "Dutch" is "Nederlands" or "Hollands", isn't it?

Yes to both  - with the "Ne" pronounced similar to English "neigh'...

One of these days I will try to learn to speak the language of my ancestors.

- Hendrik



From jusa.sj at gmail.com  Sat Oct 13 11:22:10 2007
From: jusa.sj at gmail.com (Juha S.)
Date: Sat, 13 Oct 2007 18:22:10 +0300
Subject: Foreign Character Problems In Python 2.5 and Tkinter
In-Reply-To: <pan.2007.10.13.13.43.54.219741@luukku.com>
References: <mailman.160.1192262504.927.python-list@python.org>	<pan.2007.10.13.12.25.41.721728@luukku.com>	<mailman.168.1192281215.927.python-list@python.org>
	<pan.2007.10.13.13.43.54.219741@luukku.com>
Message-ID: <4710E2A2.6040904@gmail.com>

Thanks! Opening and saving the file with the iso-8859-1 codec seems to 
handle the characters correctly. Now the only problem left are the 
missing newlines in the output file. I tried googling for the iso code 
for newline and entering it in a Python string as '\x0A' but it doesn't 
work in the output file which still loses the newlines.


Janne Tuukkanen wrote:
> Sat, 13 Oct 2007 16:13:21 +0300, Juha S. kirjoitti:
>
>   
>> Thanks for the reply. I made changes to my code according to your 
>> example. Now any Scandinavian characters that are outputted by the 
>> program are missing in the Tk text box.
>>     
>
>
>   
>>             file = codecs.open(filename, 'r', 'utf-8', 'ignore')
>>     
>
>  Remove that 'ignore'. If you then get error which complains,
> that utf-8 codec can't handle the file, you've found the culprit.
> The file might be in iso-8859-1.
>
>
> 	JanneT
>
>   



From patrick.waldo at gmail.com  Sun Oct 14 12:57:06 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Sun, 14 Oct 2007 16:57:06 -0000
Subject: Simple Text Processing Help
In-Reply-To: <1192371913.444185.65650@q3g2000prf.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192371913.444185.65650@q3g2000prf.googlegroups.com>
Message-ID: <1192381026.960026.129730@i13g2000prf.googlegroups.com>

Thank you both for helping me out.  I am still rather new to Python
and so I'm probably trying to reinvent the wheel here.

When I try to do Paul's response, I get
>>>tokens = line.strip().split()
[]

So I am not quite sure how to read line by line.

tokens = input.read().split() gets me all the information from the
file.  tokens[2:-1] = [u' '.join(tokens[2:-1])] works just fine, like
in the example; however, how can I loop this for the entire document?
Also, when I try output.write(tokens), I get "TypeError: coercing to
Unicode: need string or buffer, list found".

Any ideas?

















On Oct 14, 4:25 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 14, 2:48 pm, patrick.wa... at gmail.com wrote:
>
>
>
> > Hi all,
>
> > I started Python just a little while ago and I am stuck on something
> > that is really simple, but I just can't figure out.
>
> > Essentially I need to take a text document with some chemical
> > information in Czech and organize it into another text file.  The
> > information is always EINECS number, CAS, chemical name, and formula
> > in tables.  I need to organize them into lines with | in between.  So
> > it goes from:
>
> > 200-763-1                     71-73-8
> > n?trium-tiopent?l           C11H18N2O2S.Na           to:
>
> > 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
>
> > but if I have a chemical like: kyselina mo?ov?
>
> > I get:
> > 200-720-7|69-93-2|kyselina|mo?ov?
> > |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
>
> > and then it is all off.
>
> > How can I get Python to realize that a chemical name may have a space
> > in it?
>
> In the original file, is every chemical on a line of its own? I assume
> it is here.
>
> You might use a regexp (look at the re module), or I think here you
> can use the fact that only chemicals have spaces in them. Then, you
> can split each line on whitespace (like you're doing), and join back
> together all the words between the 3rd (ie index 2) and the last (ie
> index -1) using tokens[2:-1] = [u' '.join(tokens[2:-1])]. This uses
> the somewhat unusual python syntax for replacing a section of a list
> with another list.
>
> The approach you took involves reading the whole file, and building a
> list of all the chemicals which you don't seem to use: I've changed it
> to a per-line version and removed the big lists.
>
> path = "c:\\text_samples\\chem_1_utf8.txt"
> path2 = "c:\\text_samples\\chem_2.txt"
> input = codecs.open(path, 'r','utf8')
> output = codecs.open(path2, 'w', 'utf8')
>
> for line in input:
>     tokens = line.strip().split()
>     tokens[2:-1] = [u' '.join(tokens[2:-1])]
>     chemical = u'|'.join(tokens)
>     print chemical + u'\n'
>     output.write(chemical + u'\r\n')
>
> input.close()
> output.close()
>
> Obviously, this isn't tested because I don't have your chem_1_utf8.txt
> file.
>
> --
> Paul Hankin




From byte8bits at gmail.com  Fri Oct 12 10:30:57 2007
From: byte8bits at gmail.com (brad)
Date: Fri, 12 Oct 2007 10:30:57 -0400
Subject: Memory Problems in Windows 2003 Server
In-Reply-To: <470f7857$0$27795$426a74cc@news.free.fr>
References: <470f7857$0$27795$426a74cc@news.free.fr>
Message-ID: <feo0f7$jd1$2@solaris.cc.vt.edu>

amdescombes wrote:
> Hi,
> 
> I am using Python 2.5.1
> I have an application that reads a file and generates a key in a 
> dictionary for each line it reads. I have managed to read a 1GB file and 
> generate more than 8 million keys on an Windows XP machine with only 1GB 
> of memory and all works as expected. When I use the same program on a 
> Windows 2003 Server with 2GB of RAM I start getting MemoryError exceptions!
> I have tried setting the IMAGE_FILE_LARGE_ADDRESS_AWARE on both 
> Python.exe and Python25.dll and setting the /3GB flag on the boot.ini 
> file to no avail. I still get the MemoryError exceptions.
> 
> Has anybody encountered this problem before?
> 
> Thanks in advance for any ideas/suggestions.
> 
> Best Regards,
> 
> Andr? M. Descombes

I forgot to mention that the OS itself or other processes may be using a 
lot of memory. So, just because you have 2GB, that does not mean you can 
access all of that at once. I would guess that 25% of memory is in 
constant use by the OS. So, do your IO/reads in smaller chunks similar 
to the example I gave earlier.

Brad


From greg.ewing at canterbury.ac.nz  Sun Oct  7 03:09:06 2007
From: greg.ewing at canterbury.ac.nz (Greg Ewing)
Date: Sun, 07 Oct 2007 20:09:06 +1300
Subject: ANN: Pyrex 0.9.6
Message-ID: <mailman.1631.1191754836.2658.python-announce-list@python.org>

Pyrex 0.9.6 is now available:

   http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/

There is a *lot* of new stuff in this version, too much
to fit into this announcement. Read all about it here:

   http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/changes-0.9.6.html

What is Pyrex?
--------------

Pyrex is a language for writing Python extension modules.
It lets you freely mix operations on Python and C data, with
all Python reference counting and error checking handled
automatically.


From n4somethingcompletelydifferent at gmail.com  Sat Oct 13 13:29:24 2007
From: n4somethingcompletelydifferent at gmail.com (n4somethingcompletelydifferent at gmail.com)
Date: Sat, 13 Oct 2007 17:29:24 -0000
Subject: Trial of Star-P for Python
Message-ID: <1192296564.515793.196570@y27g2000pre.googlegroups.com>

In browsing their website, I noticed that Interactive Supercomputing
has made available a free evaluation copy of Star-P for Python (http://
www.interactivesupercomputing.com/products/starpandpython.php).  I
know its a fairly new product, but has anyone on here been able to try
it out yet, and if so what are your impressions?  I am curious to see
what people think about this product and other numerical, parallel
computing Python packages.



From paul.nospam at rudin.co.uk  Fri Oct  5 10:22:18 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Fri, 05 Oct 2007 15:22:18 +0100
Subject: novice list
References: <mailman.1572.1191582075.2658.python-list@python.org>
Message-ID: <87ir5lfxph.fsf@rudin.co.uk>

Istv?n <uhum2004 at freemail.hu> writes:

> Could somebody suggest me a novice Python list, please?

Here you go:

['novice']


(Sorry, couldn't resist.)



From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 11 01:16:35 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 05:16:35 -0000
Subject: Keeping track of subclasses and instances?
References: <fejpo9$vm$1@news1.carnet.hr>
	<1192077344.171261.229360@22g2000hsm.googlegroups.com>
Message-ID: <13grcdjsmburc72@corp.supernews.com>

On Wed, 10 Oct 2007 21:35:44 -0700, Michele Simionato wrote:

> On Oct 10, 8:17 pm, Karlo Lozovina <_kar... at mosor.net> wrote:
>> Hi,
>>
>> what's the best way to keep track of user-made subclasses, and
>> instances of those subclasses? I just need a pointer in a right
>> direction... thanks.
>>
>> --
>> Karlo Lozovina -- Mosor
> 
> This recipe does what you want, with the intent of providing automatic
> finalization of the instances, but you should be able to tweak it to do
> everything you wish:
> 
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/523007


Well, that answers my earlier question about why you might want to track 
instances. But it seems like an unnecessarily complicated way of doing it.

>From your recipe:

[module deallocating.py]

import logging

class C(object):
    def __init__(self):
        logging.warn('Allocating resource ...')
    def __del__(self):
        logging.warn('De-allocating resource ...')
        print 'THIS IS NEVER REACHED!'

if __name__ == '__main__':
    c = C()


Is there a problem with writing C like this?

class C(object):
    def __init__(self):
        logging.warn('Allocating resource ...')
        self.__log = logging.warn
    def __del__(self):
        self.__log('De-allocating resource ...')
        print 'THIS IS REACHED!'



It works for me. Have I missed something?


-- 
Steven.


From exarkun at divmod.com  Mon Oct 22 08:17:23 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 22 Oct 2007 08:17:23 -0400
Subject: python with braces pre-processor
In-Reply-To: <ffhrdr$ikp$1@news.ciril.fr>
Message-ID: <20071022121723.8162.331523967.divmod.quotient.26358@ohm>

On Mon, 22 Oct 2007 09:44:27 +0000 (UTC), Paul Brauner <paul.brauner at loria.fr> wrote:
> [snip]
> I thought that it must exists because everyone generating python code will
>encounter more or less the same problem, but I didn't find any 'official'
>thing on the subject.

I expect many projects which emit Python code actually emit Python code.
Getting the indentation right isn't much of a chore at all.  If you need
some help to get it right, maybe this will get you going in the right
direction:

  http://twistedmatrix.com/trac/browser/sandbox/exarkun/ast/ast_pp.py

It's just some throw-away code, but it at least manages to indent code
properly.

Jean-Paul


From kay.schluehr at gmx.net  Fri Oct  5 06:09:36 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 05 Oct 2007 03:09:36 -0700
Subject: unit testing
In-Reply-To: <13gakf52n1fv2e2@corp.supernews.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1527.1191525190.2658.python-list@python.org>
	<13gakf52n1fv2e2@corp.supernews.com>
Message-ID: <1191578976.772706.22460@r29g2000hsg.googlegroups.com>

On 4 Okt., 22:49, Jeffrey Froman <jeff... at fro.man> wrote:
> Chris Mellon wrote:
> > Doctest is commonly given as the alternative to people who feel this
> > way. Personally, I find that anything worth testing is worth having a
> > test directory and independent unit tests for.
>
> I like keeping my tests separate as well, and doctest does allow this, using
> doctest.testfile(). That is, despite the name, doctests do not necessarily
> need to appear in docstrings :-)
>
> Jeffrey

And they are definitely no unit tests. Instread they are diffs on
lexical content of an executed session protocol of arbitrary size
( which might be customized using a mini language ). So they are
sensitive to all kinds of ambient changes being irrelevant for the
*functional unit* to be tested.

I wish all people good luck porting their doctests to Python 3.0.



From schaefer.mp at gmail.com  Wed Oct 17 07:55:26 2007
From: schaefer.mp at gmail.com (schaefer.mp at gmail.com)
Date: Wed, 17 Oct 2007 11:55:26 -0000
Subject: negative base raised to fractional exponent
In-Reply-To: <mailman.104.1192587133.13605.python-list@python.org>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
	<mailman.104.1192587133.13605.python-list@python.org>
Message-ID: <1192622126.725230.136570@i13g2000prf.googlegroups.com>

On Oct 17, 4:05 am, Ken Schutte <kschu... at csail.mit.edu> wrote:
> schaefer... at gmail.com wrote:
> > Does anyone know of an approximation to raising a negative base to a
> > fractional exponent? For example, (-3)^-4.11111 since this cannot be
> > computed without using imaginary numbers. Any help is appreciated.
>
> As others have said, you can use Python's complex numbers (just write -3
> as -3+0j).  If for some reason you don't want to, you can do it all with
> reals using Euler's formula,
>
> (-3)^-4.11111  =  (-1)^-4.11111  *  3^-4.11111
> =
> e^(j*pi*-4.11111)  *  3^-4.11111
> =
> (cos(pi*-4.11111) + j*sin(pi*-4.11111)) * 3^-4.11111
>
> in Python:
>
>  >>> import math
>  >>> real_part = (3**-4.11111) * math.cos(-4.11111 * math.pi)
>  >>> imaj_part = (3**-4.11111) * math.sin(-4.11111 * math.pi)
>  >>> (real_part,imaj_part)
> (0.01026806021211755, -0.0037372276904401318)
>
> Ken

Thank you for this. Now I need to somehow express this as a real
number. For example, I can transform the real and imaginary parts into
a polar coordinate giving me the value I want:

z = sqrt( real_part**2 + imaj_part**2 )

but this is an absolute terms. How does one determine the correct sign
for this value?




From mishok13 at gmail.com  Wed Oct 31 10:22:13 2007
From: mishok13 at gmail.com (Andrii V. Mishkovskyi)
Date: Wed, 31 Oct 2007 17:22:13 +0300
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <loom.20071031T132748-928@post.gmane.org>
References: <loom.20071031T132748-928@post.gmane.org>
Message-ID: <192840a00710310722p41ec0037ybb0e2e470df0c6b6@mail.gmail.com>

2007/10/31, jelle <jelleferinga at gmail.com>:
> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found,
> should't the .find method return 0 rather than -1?
> this breaks the
>
> if check.find('something'):
>     do(somethingElse)
>
> idiom, which is a bit of a pity I think.
>
> cheers,
>
> -jelle
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

'foo'.find('f') returns 0

What's your point? :/
-- 
Wbr, Andrii Mishkovskyi.

He's got a heart of a little child, and he keeps it in a jar on his desk.


From andreas.huesgen at arcor.de  Thu Oct 11 13:43:37 2007
From: andreas.huesgen at arcor.de (Andreas Huesgen)
Date: Thu, 11 Oct 2007 19:43:37 +0200
Subject: Parsing a commandline from within Python
In-Reply-To: <RuednddnF6-xxpPanZ2dnUVZ_sDinZ2d@comcast.com>
References: <mailman.95.1192122053.927.python-list@python.org>
	<RuednddnF6-xxpPanZ2dnUVZ_sDinZ2d@comcast.com>
Message-ID: <470E60C9.6070004@arcor.de>


>> Is there any buildin function which mimics the behavior of the
>> standard commandline parser (generating a list of strings
>> "foo bar" and "some text" from the commandline
>> <"foo bar" "some text">)?
> 
> Try the shlex module::
> 
>      >>> import shlex
>      >>> shlex.split('"foo bar" "some text"')
>      ['foo bar', 'some text']
> 

Thanks, that is exactly what i need.


Andreas Huesgen


From debajit1 at gmail.com  Wed Oct 17 19:46:25 2007
From: debajit1 at gmail.com (Debajit Adhikary)
Date: Wed, 17 Oct 2007 23:46:25 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192657240.005464.35770@z24g2000prh.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
Message-ID: <1192664785.093927.305050@q5g2000prf.googlegroups.com>

On Oct 17, 5:40 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> To answer your question though: a += b is *not* the same as a = a + b.
> The latter would create a new list and assign it to a, whereas a += b
> updates a in-place.

I know I'm being a little finicky here, but how would someone know
that a+=b is not the same as a=a+b?
Any documentation or reference that mentions this?


> Use a += b rather than a.extend(b): I'm not sure what I was thinking.
> Anyway, look at 'timeit' to see how to measure things like this, but
> my advice would be not to worry and to write the most readable code -
> and only optimise if your code's runnign too slowly.

I understand. Thanks :)
At the same time, however, as someone new learning the language, I
feel it always helps to know what the best practices and patterns are
at the very outset (at least for someone who chooses to become a good
programmer in that language). I mean, for me it's like this, I just
don't want to get the work done, I would really want to know why I do
something a certain way and not some other way :)



From arkanes at gmail.com  Fri Oct 12 16:31:47 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Fri, 12 Oct 2007 15:31:47 -0500
Subject: problem with wxPanel derivation class ~ thanks
In-Reply-To: <fpudnVlTcpFmWJLanZ2dnUVZ_uygnZ2d@comcast.com>
References: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
	<fpudnVlTcpFmWJLanZ2dnUVZ_uygnZ2d@comcast.com>
Message-ID: <4866bea60710121331q5699d98bk51d0a83f395e029@mail.gmail.com>

On 10/12/07, <"@bag.python.org <"none> wrote:
> none wrote:
> > wxGlade created a simple Frame with a panel a sizer and 3 wxControls ,

<snip>

> Thanks All,
> I didn't make the super() call (java terminology)
> to the base class.
>
> this is the only python group (en) on giganews, my first search
>  no wx or qt.
> gmane.com.python.wxpython is not found
> gmane.org came up and crashed firefox 3 times searching for python.
> I'll try the wxpython forrum for x stuff, but you spoiled me with prompt
> and accurate responses.
>


The wxpython mailing list is wxpython-users. You can subscribe at
wxPython.org. It's not mirrored to an actual newsgroup, although I'm
sure gmane has it. You'll find wxpython-users to be at least as prompt
and accurate, at least with regard to wxPython-specific questions.


From levub137 at wi.rr.com  Wed Oct  3 09:12:20 2007
From: levub137 at wi.rr.com (Raymond L. Buvel)
Date: Wed, 03 Oct 2007 08:12:20 -0500
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
	<1191272365.225974.41660@w3g2000hsg.googlegroups.com>
	<slrnfg4bro.28k.horpner@FIAD06.norwich.edu>
	<1191343344.454133.46790@n39g2000hsh.googlegroups.com>
	<slrnfg4ve2.ac.horpner@FIAD06.norwich.edu>
Message-ID: <4703953b$0$15403$4c368faf@roadrunner.com>

Neil Cerutti wrote:

>> Another guess could be that real numbers being closed under the
>> four arithmetic operations, there is no danger to accidentally
>> step into complex numbers. OTOH floats and rationals are two
>> (conflicting) ways of extending integers.
> 
> You would have to adopt a few simple conversion rules, a la
> Scheme. Inexact numbers are contagious, for example. It was
> pretty shocking for a Scheme programmer to see the gmpy package
> break that rule. ;)

There is another package that supports rationals.

http://pypi.python.org/pypi/clnum/1.2

One of the reasons I created this package is that I didn't like
implicit conversion of inexact numbers to exact numbers.  Instead
clnum either raises an exception (with Python floats and complex)
or converts the rational to a compatible inexact type (with mpf
and cmpf).

Other reasons for creating this package are gmpy doesn't support
complex numbers or the functions in the math and cmath modules.

However, gmpy does have many capabilities that are not in clnum so
you need to choose based on the type of problem you want to solve.

Ray Buvel


From kivilaya at 163.com  Mon Oct  1 22:31:56 2007
From: kivilaya at 163.com (kivilaya)
Date: Mon, 01 Oct 2007 19:31:56 -0700
Subject: How to display a videostream in the PyQt GUI by a efficient way
In-Reply-To: <mailman.1310.1191176173.2658.python-list@python.org>
References: <mailman.1310.1191176173.2658.python-list@python.org>
Message-ID: <1191292316.170992.225770@n39g2000hsh.googlegroups.com>

Hi, David! ^__^

  Your advice makes me know the important thing of my question is the
way I get the source video.

  I do this on the Windows XP operating system, and make these changes
on a live video stream. And I think you are right, the conversion
process takes most part of the time, and the raw data from the camera
is being converted more than twice before it reaches the screen (It is
all because of my lack of the knowledge of  how to using
loadFromData()).
  After I get a PIL image named im from the camera, I convert it like
this,
        s = StringIO()
        self.im.save(s, "PNG")
        s.seek(0)
        image = QImage()
        image.loadFromData(s.read())
        img = QPixmap.fromImage(image)
        s.close()

  I'm not familiar with the way of getting the data from the camera,
so in my current way, I just use a function in the videocapture module
that can save the current picture in of the camera to get the data,
and do this 15 times every minute to make the source data as a live
video stream.
  So I think learn the use of QPixmap.loadFromData() and the use of
videocapture module is important for me.

  Thank you for your help, your suggestion let me get more and more
familiar with the things I do and learn a lot.??

Kivilaya






From besturk at gmail.com  Fri Oct 19 01:25:05 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 22:25:05 -0700
Subject: Convert string to command..
In-Reply-To: <87lka01f8k.fsf@mulj.homelinux.net>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
	<1192724835.765738.141790@q5g2000prf.googlegroups.com>
	<87przc1im7.fsf@mulj.homelinux.net>
	<1192726872.921589.249670@i38g2000prf.googlegroups.com>
	<87lka01f8k.fsf@mulj.homelinux.net>
Message-ID: <1192771505.510311.167980@q5g2000prf.googlegroups.com>

On Oct 18, 8:53 pm, Hrvoje Niksic <hnik... at xemacs.org> wrote:
> Abandoned <best... at gmail.com> writes:
> > > When you load it, convert the string to dict with cPickle.loads
> > > instead of with eval.
>
> > Yes i understand and this very very good ;)
>
> Good!  :-)
>
> > psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
> > 0x80
> > HINT:  This error can also happen if the byte sequence does not match
> > the encoding expected by the server, which is controlled by
> > "client_encoding".
>
> Use a different column type for cache2's column, one more appropriate
> for storing binary characters (perhaps BYTEA for Postgres).  Don't
> forget to also use a bind variable, something like:
>
> cursor.execute("INSERT INTO cache2 VALUES (?)", a)
>
> Using "INSERT ... ('%s')" % (a) won't work, since the huge binary
> string in a can contain arbitrary characters, including the single
> quote.

I tryed:
cursor.execute("INSERT INTO cache2 VALUES (?)", a)
and
cursor.execute("INSERT INTO cache2 VALUES (%s)", (a,) )
but the result is same..

> psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
> 0x80
> HINT:  This error can also happen if the byte sequence does not match
> the encoding expected by the server, which is controlled by
> "client_encoding".



From mccredie at gmail.com  Tue Oct  9 13:20:29 2007
From: mccredie at gmail.com (Matimus)
Date: Tue, 09 Oct 2007 17:20:29 -0000
Subject: Static variable vs Class variable
In-Reply-To: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
Message-ID: <1191950429.754325.243740@o3g2000hsb.googlegroups.com>

On Oct 9, 9:16 am, "minkoo.... at gmail.com" <minkoo.... at gmail.com>
wrote:
> Hi.
>
> I've got a question on the differences and how to define static and
> class variables. AFAIK, class methods are the ones which receives the
> class itself as an argument, while static methods are the one which
> runs statically with the defining class.
>
> Hence, my understanding is that static variables must be bound to the
> class defining the variables and shared by children of parent class
> where the variable is defined. But, please have a look at this code in
> which a guy told me that the variable a is static:
>
> >>> class Foo:
>
>         a = 1
>         @classmethod
>         def increment(cls):
>                 cls.a += 1
>                 print cls.a
>
> Here, I am defining variable a which, I believe is class variable,
> i.e., variable that is not bound to Foo itself. Rather, a is bound to
> the class which is accessing the variable. The code that corroborates
> this idea is as follows:
>
> >>> class Child1(Foo):
>
>         pass
>
> >>> Child1.increment()
>
> 4
>
> >>> class Child2(Foo):
>
>         pass
>
> >>> Child2.increment()
>
> 4
>
> This means that Child1 and Child2 does not share variable a which
> means that variable a is class variable rather than static variable.
>
> Could you please comment on this? Is a static or class variable?
> What's the most recent way of defining 'class' and 'static' variables?

In Python `a' is considered a class variable. By modifying `a' using a
class method though, you are essentially re-binding `a' to the class
that it is called from. So, it will be shared by multiple instances of
the same class, but not derivatives. The re-binding only occurs when
`increment' is called. This makes for some very confusing behavior.
I'm not aware of a way, in python, to explicitly specify a variable as
static. For the behavior I think you are looking for you just need to
modify it carefully. This can be done with a static, class or instance
method. Though, using a class method is kind of silly. I'm sure some
would argue that using an instance method is also silly.

code:

class C(object):
 a = 0
 def inc(self):
  C.a += 1 # directly modify the variable on the base class that it is
attached to
  return C.a

# or you could use a static method, which is fine since the instance
isn't being used. This
# will also allow the method to be called without instantiating the
class.

class C(object):
 a = 0
 @staticmethod
 def inc():
  C.a += 1
  return C.a

Matt



From david.trem at gmail.com  Sun Oct  7 03:25:55 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sun, 7 Oct 2007 09:25:55 +0200
Subject: Need help to understand garbage collection
In-Reply-To: <op.tzs5ng1px6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <129e1cd10710061016y30db401bw6906b083c6f0cecf@mail.gmail.com>
	<op.tzs5ng1px6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <129e1cd10710070025y40aaaa31vd209132117ff6349@mail.gmail.com>

Thanks Gabriel!
I get it now. With your help I was able to focus on the real problem.
Here is the correctly working example for the record:


import gc

class Test(object):
    def __init__(self):
        pass

gc.collect()
original_objects_id = [id(x) for x in gc.get_objects()]
#create object a
a = Test()
gc.collect()
new_objects = [x for x in gc.get_objects()
               if id(x) not in original_objects_id]
print "-" * 40
print "Added object:", len(new_objects)
for obj in new_objects:
    print "*" * 10
    print str(id(obj)) + ":" + str(obj)
    print gc.get_referents(obj)
    print "*" * 3
print "-" * 20
del new_objects
del obj

gc.collect()
original_objects_id = [id(x) for x in gc.get_objects()]
#remove object a
del a
gc.collect()
after_rm_objects_id = [id(x) for x in gc.get_objects()]
removed_objects_id = [idx for idx in original_objects_id
                   if idx not in after_rm_objects_id]
print "-" * 40
print "Removed objects:", len(removed_objects_id)
print removed_objects_id
print "-" * 20


From kay.schluehr at gmx.net  Mon Oct 22 03:24:09 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Mon, 22 Oct 2007 00:24:09 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <ffg2jk$mj$1@online.de>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
Message-ID: <1193037849.011136.282480@y27g2000pre.googlegroups.com>

On 21 Okt., 19:34, Joachim Durchholz <j... at durchholz.org> wrote:

> These are small detractions from a large overall contribution.
> In particular, I find llothars characterization of TeX wrong: it is one
> of the least buggy typesetting programs ever written (not a small feat),
> and it *still* produces output that is as least as good as what other
> programs do, and in fact better than the vast majority.

Acording to the Legend Of The Great Knuth ( derived from personal
confessions ) Knuth used a "Clean Room" approach. He specified and
verified the entire program before he started hacking it into the
machine. The result is accordingly. What has changed since then is
computer power and easeness of tool usage. One would rather use an
incremental approach today and specify + hack + test the program in
tiny pieces without struggling too much with the programming
equipment. So it also just incrementally improves.



From carsten at uniqsys.com  Mon Oct  8 15:40:49 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 08 Oct 2007 15:40:49 -0400
Subject: Convert obejct string repr to actual object
In-Reply-To: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>
References: <96f089100710081219t5b48be86u89d266ff4bd74dbf@mail.gmail.com>
Message-ID: <1191872449.3402.43.camel@dot.uniqsys.com>

On Mon, 2007-10-08 at 21:19 +0200, Tor Erik S?nvisen wrote:
> Hi,
> 
> I've tried locating some code that can recreate an object from it's
> string representation...
> The object in question is really a dictionary containing other
> dictionaries, lists, unicode strings, floats, ints, None, and
> booleans.
> 
> I don't want to use eval, since I can't trust the source sending the
> object.

You could still use eval, but run a separate algorithm first to make
sure the string is "legal." For example, you could whip up a simple
PyParsing grammar to restrict the set of allowable strings, or compile
the string into byte code and inspect the byte code to look for red
flags like LOAD_NAME (with a name other than None) and CALL_FUNCTION.

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From rahul986 at gmail.com  Wed Oct 17 14:57:30 2007
From: rahul986 at gmail.com (Legend)
Date: Wed, 17 Oct 2007 18:57:30 -0000
Subject: Desperately need help for html to LaTeX conversion
In-Reply-To: <5nhpjdFihprjU1@mid.individual.net>
References: <1192471080.796928.230030@k35g2000prh.googlegroups.com>
	<5nhpjdFihprjU1@mid.individual.net>
Message-ID: <1192647450.571621.99160@t8g2000prg.googlegroups.com>

On Oct 15, 1:24 pm, "ynotssor" <ynots... at example.org> wrote:
> Innews:1192471080.796928.230030 at k35g2000prh.googlegroups.com,
>
> vasan... at hotmail.com <vasan... at hotmail.com> wrote:
> > The perl one does not run due to path problems.
>
> Nothing could be easier to fix than that.

I don't know if this could solve your problem atleast to a little
extent but try this once:

http://www.htmldoc.org/



From rupole at hotmail.com  Sat Oct 13 14:56:27 2007
From: rupole at hotmail.com (Roger Upole)
Date: Sat, 13 Oct 2007 14:56:27 -0400
Subject: how to get the NT event log properties with OnObjectReady() with
	python
References: <1192120780.301198.62340@22g2000hsm.googlegroups.com>
Message-ID: <1192301457_2607@sp12lax.superfeed.net>


<hainguyen2x at yahoo.com> wrote in message news:1192120780.301198.62340 at 22g2000hsm.googlegroups.com...
> I'm trying to get a notification from the NT event for any new event
> using the DispatchWithEvents() function. Everything seems to be
> working the way I wanted, but I don't know how to get the properties
> of the event (ie. event type, message, etc.) from the OnObjectReady()
> callback.
>
> class SinkClass(object):
>    def OnObjectReady(self, *args): #self may be the wmi_sink object
>        print "OnObjectReady callback ..."
>        print self #.TargetInstance.Message
>        print args[0]
>
>    def OnCompleted(self, *args):
>        print "OnCompleted callback..."
>        print args #.TargetInstance.Message
>
>    def OnObjectPut(self, *args):
>        print "OnObjectPut callback..."
>
>    def OnProgress(self, *args):
>        print "OnProgress callback..."
>
> wmi = win32com.client.GetObject("winmgmts:
> {impersonationLevel=impersonate,(security)}!//./root/cimv2")
> wmi_sink =
> win32com.client.DispatchWithEvents("WbemScripting.SWbemSink",SinkClass)
> wmi.ExecNotificationQueryAsync(wmi_sink,"SELECT * FROM
> __InstanceCreationEvent where TargetInstance ISA 'Win32_NTLogEvent'")
>
>
> The argument args in the OnObjectReady() seems to be the interface to
> a com object (may be the event object itself).
> I want to read the properties (ie. message, eventID, type, etc)  of
> the triggered NT event.
>
> Please help.
>

The first arg is passed as a raw IDispatch interface.  You can wrap it
as below to access the properties.

    def OnObjectReady(self, *args): #self may be the wmi_sink object
        print "OnObjectReady callback ..."
        print self #.TargetInstance.Message
        wbem_object=win32com.client.gencache.EnsureDispatch(args[0],0)
        print wbem_object
        ti=wbem_object.Properties_('TargetInstance').Value
        print 'TargetInstance',ti
        for p in ti.Properties_:
            print p.Name, p.Value


         Roger




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From timr at probo.com  Sat Oct 27 01:42:18 2007
From: timr at probo.com (Tim Roberts)
Date: Sat, 27 Oct 2007 05:42:18 GMT
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
	<13i09eohrt6il52@corp.supernews.com>
	<5oc23kFm4aqfU1@mid.individual.net>
	<47210600$0$4375$9b4e6d93@newsspool4.arcor-online.net>
	<5oe457Fmh7lsU1@mid.individual.net>
	<4721ed72$0$4370$9b4e6d93@newsspool4.arcor-online.net>
	<5oembcFm9m14U1@mid.individual.net>
Message-ID: <qqj5i39abtl8lp40a16lj9m4e8fk1dhs7v@4ax.com>

Bjoern Schliessmann <usenet-mail-0306.20.chr0n0ss at spamgourmet.com> wrote:
>
>The last app I saw that had problems with whitespace was Worms 2
>(1997). YMMV (and I'm interested in it).

If only.  Even the very latest Microsoft WDK (Windows Driver Kit, formerly
known as the DDK) cannot successfully build drivers if the source code
lives in a path with spaces.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From DustanGroups at gmail.com  Mon Oct 29 07:39:51 2007
From: DustanGroups at gmail.com (Dustan)
Date: Mon, 29 Oct 2007 11:39:51 -0000
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <mailman.571.1193653651.13605.python-list@python.org>
References: <mailman.571.1193653651.13605.python-list@python.org>
Message-ID: <1193657991.923037.137710@e34g2000pro.googlegroups.com>

On Oct 29, 4:26 am, Dick Moores <r... at rcblue.com> wrote:
> Windows XP Pro, Python 2.5.1
>
> import msvcrt
> while True:
>      if msvcrt.kbhit():
>          key = msvcrt.getch()
>          if key == 'Enter'
>          do something
>
> Is there a way to catch the pressing of the 'Enter' key?
>
> Thanks,
>
> Dick Moores

Let's find out:

>>> from msvcrt import getch
>>> while True:
...     key = getch()
...     if key: print repr(key)+',',
...
'p', 'r', 'e', 's', 's', 'i', 'n', 'g', ' ', 'e', 'n', 't', 'e', 'r',
':', ' ', '\r',

Gee, I pressed enter, and it returned '\r'. I wonder...

>>> import msvcrt
>>> while True:
...     if msvcrt.kbhit():
...         key = msvcrt.getch()
...         if key == '\r':
...             print "success!"
...
success!



From Jiandong.Ge at gmail.com  Fri Oct  5 14:44:27 2007
From: Jiandong.Ge at gmail.com (JD)
Date: Fri, 05 Oct 2007 18:44:27 -0000
Subject: A question about subprocess
In-Reply-To: <mailman.1519.1191520500.2658.python-list@python.org>
References: <1191429980.784610.39020@22g2000hsm.googlegroups.com>
	<mailman.1519.1191520500.2658.python-list@python.org>
Message-ID: <1191609867.446303.219950@w3g2000hsg.googlegroups.com>

Thanks very much for all the answers.

JD

On Oct 3, 6:24 pm, Dan Stromberg <dstrombergli... at gmail.com> wrote:
> You don't necessarily need thesubprocessmodule to do this, though you
> could use it.
>
> I've done this sort of thing in the past with fork and exec.
>
> To serialize the jobs on the machines, the easiest thing is to just send
> the commands all at once to a given machine, like "command1; command2;
> command3".
>
> You can use waitpid or similar to check if a series of jobs has finished
> on a particular machine.
>
> An example of something similar can be found athttp://stromberg.dnsalias.org/~strombrg/loop.html
>
> (If you look at the code, be kind.  I wrote it long ago :)
>
> There's a benefit to saving the output from each machine into a single
> file for that machine.  If you think some machines will produce the same
> output, and you don't want to see it over and over, you can analyze the
> files with something likehttp://stromberg.dnsalias.org/~strombrg/equivalence-classes.html.
>
>  On Wed, 03 Oct 2007 16:46:20 +0000, JD wrote:
>
> > Hi,
>
> > I want send my jobs over a whole bunch of machines (using ssh). The
> > jobs will need to be run in the following pattern:
>
> > (Machine A)   (Machine B)  (Machine C)
>
> > Job A1             Job B1            Job C1
>
> >  Job A2           Job B2            etc
>
> >  Job A3          etc
>
> >  etc
>
> > Jobs runing on machine A, B, C should be in parallel, however, for
> > each machine, jobs should run one after another.
>
> > How can I do it with thesubprocess?
>
> > Thanks,
>
> > JD




From steve at REMOVE-THIS-cybersource.com.au  Mon Oct  8 08:15:30 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 12:15:30 -0000
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
	<13gi4vrfqhrs48d@corp.supernews.com>
	<1i5m4bz.18obx4r5bg0gaN%aleax@mac.com>
	<pan.2007.10.08.03.28.23@REMOVE.THIS.cybersource.com.au>
	<1191816415.377623.125700@o80g2000hse.googlegroups.com>
Message-ID: <13gk7r2b9o6il33@corp.supernews.com>

On Mon, 08 Oct 2007 04:06:55 +0000, Michele Simionato wrote:

> > Hmmm... I'm not sure I understand how a with statement is meant to
> > replace class.__del__ in practice. It seems to me that the two things
> > have different uses. with is useful when you create an object, do
> > something with it, dispose of it in an orderly fashion, and then
> > continue. How does that help when you create an unknown number of 
> > long-lasting objects where you can't predict how and when they will be
> > disposed of?

[snip]

>> Now, I don't think the above is feasible. What am I missing?
> 
> Rename your __del__ to close and call it explicitely:
> 
> p.close()
> alist[3].close()
> alist[853].close()
> alist[701].close()

Well, that utterly sucks. If I wanted to call finalizers explicitly, I'd 
be writing in C.

You say that using __del__ leads to hard-to-debug "bombs in my code 
waiting to explode at some unknown moment". Maybe so -- but so does 
explicitly managing resources by hand in the way you suggest, and quite 
frankly, I suspect I'd have a hell of a lot fewer bugs by relying on 
__del__ and the garbage collector than I would from managing resources 
manually in a big project.



-- 
Steven


From steve at REMOVE-THIS-cybersource.com.au  Fri Oct  5 11:48:25 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 05 Oct 2007 15:48:25 -0000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
	<13gc6alr30la682@corp.supernews.com>
	<mailman.1574.1191584293.2658.python-list@python.org>
Message-ID: <13gcn69qgkl1b09@corp.supernews.com>

On Fri, 05 Oct 2007 07:37:34 -0400, Steve Holden wrote:

> Steven D'Aprano wrote:
>> On Fri, 05 Oct 2007 00:12:33 -0500, Robert Kern wrote:
>> 
>>> This is somewhat odd, because most modules aren't exposed that way.
>>> They are either in their own file and accessed by importing them
>>> directly, or they are inside a package.
>> 
>> Any time you say:
>> 
>> import parrot
>> 
>> 
>> in one of your modules, you export parrot to anything that
> 
> subsequently

Well obviously you have to write the module before people import it. I 
didn't really think "you must obey the laws of time and space" needed to 
be explained.


>> imports your
>> module. (Unless you take specific steps to prevent it, for instance
>> with del parrot.)
> 
> or the creation of an __all__ containing an exclusive list of names for
> export.

No.

__all__ only effects names imported with "from module import *", it has 
no effect on "import module".

What was that again about avoiding "writing anything that will be 
misconstrued by newless cloobs unfortunate enough to reach this thread as 
a result of a search for meaningful information on Python imports"?



-- 
Steven.


From deets at nospam.web.de  Sat Oct 27 03:35:29 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 27 Oct 2007 09:35:29 +0200
Subject: transmit an array via socket
In-Reply-To: <mailman.498.1193464764.13605.python-list@python.org>
References: <mailman.498.1193464764.13605.python-list@python.org>
Message-ID: <5og82jFmn81nU1@mid.uni-berlin.de>

Jeff Pang schrieb:
> I want to transmit an array via socket from a host to another.
> How to do it? thank you.

Using XMLRPC or Pyro or other RPC mechanisms instead of reinventing a 
wheel that is larger than the socket API suggests in the first place.

Diez


From gagsl-py2 at yahoo.com.ar  Fri Oct 19 22:32:31 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 23:32:31 -0300
Subject: where do I need to "tab"?
References: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
	<13hipiq5fafqn8d@corp.supernews.com>
Message-ID: <op.t0g5chs0x6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 23:24:30 -0300, Scott David Daniels  
<Scott.Daniels at Acm.Org> escribi?:

> narutocanada at gmail.com wrote:
>> I'm following the python's translation of SICP:
>> http://codepoetics.com/wiki/index.php?title=Topics:SICP_in_other_languages:Python:Chapter_1
>> ...
> OK, you have a mix of Python 3,0 and current (2.5.1) Python.

All examples are OK for 2.5

>> a = 3
>> b = a + 1
> Fine in all
>> print a + b + (a * b)
> Fine in all but 3.0
> For 3.0, print becomes a function:
>      print(a + b + (a * b))
>> print (a == b)
> Fine in all
>> print b if ((b > a) and (b < (a * b))) else a
> Fine in 2.6, which isn't really out yet.

And in 2.5 too, like all the other examples. I wouldn't menction 3.0 yet.

-- 
Gabriel Genellina



From j.d.walker at comcast.net  Tue Oct 23 03:15:42 2007
From: j.d.walker at comcast.net (j.d.walker)
Date: Tue, 23 Oct 2007 07:15:42 -0000
Subject: It's The Oil
In-Reply-To: <1193114074.817327.118530@q3g2000prf.googlegroups.com>
References: <1193114074.817327.118530@q3g2000prf.googlegroups.com>
Message-ID: <1193123742.704420.312370@q5g2000prf.googlegroups.com>

On Oct 22, 9:34 pm, therm... at india.com wrote:
> Hiroshima,Nagasaki,Genocide in Australia and North America
>
> http://countercurrents.org/holt221007.htm
>
> It's The Oil
>
> By Jim Holt
>
> 22 October, 2007
> London Review Of Books
>
> Iraq is 'unwinnable', a 'quagmire', a 'fiasco': so goes the received
> opinion. But there is good reason to think that, from the Bush-Cheney
> perspective, it is none of these things. Indeed, the US may be 'stuck'
> precisely where Bush et al want it to be, which is why there is no
> 'exit strategy'.
>
> Iraq has 115 billion barrels of known oil reserves. That is more than
> five times the total in the United States. And, because of its long
> isolation, it is the least explored of the world's oil-rich nations. A
> mere two thousand wells have been drilled across the entire country;
> in Texas alone there are a million. It has been estimated, by the
> Council on Foreign Relations, that Iraq may have a further 220 billion
> barrels of undiscovered oil; another study puts the figure at 300
> billion. If these estimates are anywhere close to the mark, US forces
> are now sitting on one quarter of the world's oil resources. The value
> of Iraqi oil, largely light crude with low production costs, would be
> of the order of $30 trillion at today's prices. For purposes of
> comparison, the projected total cost of the US invasion/occupation is
> around $1 trillion.
>
> Who will get Iraq's oil? One of the Bush administration's 'benchmarks'
> for the Iraqi government is the passage of a law to distribute oil
> revenues. The draft law that the US has written for the Iraqi congress
> would cede nearly all the oil to Western companies. The Iraq National
> Oil Company would retain control of 17 of Iraq's 80 existing
> oilfields, leaving the rest - including all yet to be discovered oil -
> under foreign corporate control for 30 years. 'The foreign companies
> would not have to invest their earnings in the Iraqi economy,' the
> analyst Antonia Juhasz wrote in the New York Times in March, after the
> draft law was leaked. 'They could even ride out Iraq's current
> "instability" by signing contracts now, while the Iraqi government is
> at its weakest, and then wait at least two years before even setting
> foot in the country.' As negotiations over the oil law stalled in
> September, the provincial government in Kurdistan simply signed a
> separate deal with the Dallas-based Hunt Oil Company, headed by a
> close political ally of President Bush.
>
> How will the US maintain hegemony over Iraqi oil? By establishing
> permanent military bases in Iraq. Five self-sufficient 'super-bases'
> are in various stages of completion. All are well away from the urban
> areas where most casualties have occurred. There has been precious
> little reporting on these bases in the American press, whose dwindling
> corps of correspondents in Iraq cannot move around freely because of
> the dangerous conditions. (It takes a brave reporter to leave the
> Green Zone without a military escort.) In February last year, the
> Washington Post reporter Thomas Ricks described one such facility, the
> Balad Air Base, forty miles north of Baghdad. A piece of (well-
> fortified) American suburbia in the middle of the Iraqi desert, Balad
> has fast-food joints, a miniature golf course, a football field, a
> cinema and distinct neighbourhoods - among them, 'KBR-land', named
> after the Halliburton subsidiary that has done most of the
> construction work at the base. Although few of the 20,000 American
> troops stationed there have ever had any contact with an Iraqi, the
> runway at the base is one of the world's busiest. 'We are behind only
> Heathrow right now,' an air force commander told Ricks.
>
> The Defense Department was initially coy about these bases. In 2003,
> Donald Rumsfeld said: 'I have never, that I can recall, heard the
> subject of a permanent base in Iraq discussed in any meeting.' But
> this summer the Bush administration began to talk openly about
> stationing American troops in Iraq for years, even decades, to come.
> Several visitors to the White House have told the New York Times that
> the president himself has become fond of referring to the 'Korea
> model'. When the House of Representatives voted to bar funding for
> 'permanent bases' in Iraq, the new term of choice became 'enduring
> bases', as if three or four decades wasn't effectively an eternity.
>
> But will the US be able to maintain an indefinite military presence in
> Iraq? It will plausibly claim a rationale to stay there for as long as
> civil conflict simmers, or until every groupuscule that conveniently
> brands itself as 'al-Qaida' is exterminated. The civil war may
> gradually lose intensity as Shias, Sunnis and Kurds withdraw into
> separate enclaves, reducing the surface area for sectarian friction,
> and as warlords consolidate local authority. De facto partition will
> be the result. But this partition can never become de jure. (An
> independent Kurdistan in the north might upset Turkey, an independent
> Shia region in the east might become a satellite of Iran, and an
> independent Sunni region in the west might harbour al-Qaida.)
> Presiding over this Balkanised Iraq will be a weak federal government
> in Baghdad, propped up and overseen by the Pentagon-scale US embassy
> that has just been constructed - a green zone within the Green Zone.
> As for the number of US troops permanently stationed in Iraq, the
> defence secretary, Robert Gates, told Congress at the end of September
> that 'in his head' he saw the long-term force as consisting of five
> combat brigades, a quarter of the current number, which, with support
> personnel, would mean 35,000 troops at the very minimum, probably
> accompanied by an equal number of mercenary contractors. (He may have
> been erring on the side of modesty, since the five super-bases can
> accommodate between ten and twenty thousand troops each.) These forces
> will occasionally leave their bases to tamp down civil skirmishes, at
> a declining cost in casualties. As a senior Bush administration
> official told the New York Times in June, the long-term bases 'are all
> places we could fly in and out of without putting Americans on every
> street corner'. But their main day-to-day function will be to protect
> the oil infrastructure.
>
> This is the 'mess' that Bush-Cheney is going to hand on to the next
> administration. What if that administration is a Democratic one? Will
> it dismantle the bases and withdraw US forces entirely? That seems
> unlikely, considering the many beneficiaries of the continued
> occupation of Iraq and the exploitation of its oil resources. The
> three principal Democratic candidates - Hillary Clinton, Barack Obama
> and John Edwards - have already hedged their bets, refusing to promise
> that, if elected, they would remove American forces from Iraq before
> 2013, the end of their first term.
>
> Among the winners: oil-services companies like Halliburton; the oil
> companies themselves (the profits will be unimaginable, and even
> Democrats can be bought); US voters, who will be guaranteed price
> stability at the gas pump (which sometimes seems to be all they care
> about); Europe and Japan, which will both benefit from Western control
> of such a large part of the world's oil reserves, and whose leaders
> will therefore wink at the permanent occupation; and, oddly enough,
> Osama bin Laden, who will never again have to worry about US troops
> profaning the holy places of Mecca and Medina, since the stability of
> the House of Saud will no longer be paramount among American concerns.
> Among the losers is Russia, which will no longer be able to lord its
> own energy resources over Europe. Another big loser is Opec, and
> especially Saudi Arabia, whose power to keep oil prices high by
> enforcing production quotas will be seriously compromised.
>
> Then there is the case of Iran, which is more complicated. In the
> short term, Iran has done quite well out of the Iraq war. Iraq's
> ruling Shia coalition is now dominated by a faction friendly to
> Tehran, and the US has willy-nilly armed and trained the most pro-
> Iranian elements in the Iraqi military. As for Iran's nuclear
> programme, neither air strikes nor negotiations seem likely to derail
> it at the moment. But the Iranian regime is precarious. Unpopular
> mullahs hold onto power by financing internal security services and
> buying off elites with oil money, which accounts for 70 per cent of
> government revenues. If the price of oil were suddenly to drop to,
> say, $40 a barrel (from a current price just north of $80), the
> repressive regime in Tehran would lose its steady income. And that is
> an outcome the US could easily achieve by opening the Iraqi oil spigot
> for as long as necessary (perhaps taking down Venezuela's oil-cocky
> Hugo Ch?vez into the bargain).
>
> And think of the United States vis-?-vis China. As a consequence of
> our trade deficit, around a trillion dollars' worth of US denominated
> debt (including $400 billion in US Treasury bonds) is held by China.
> This gives Beijing enormous leverage over Washington: by offloading
> big chunks of US debt, China could bring the American economy to its
> knees. China's own economy is, according to official figures,
> expanding at something like 10 per cent a year. Even if the actual
> figure is closer to 4 or 5 per cent, as some believe, China's
> increasing heft poses a threat to US interests. (One fact: China is
> acquiring new submarines five times faster than the US.) And the main
> constraint on China's growth is its access to energy - which, with the
> US in control of the biggest share of world oil, would largely be at
> Washington's sufferance. Thus is the Chinese threat neutralised.
>
> Many people are still perplexed by exactly what moved Bush-Cheney to
> invade and occupy Iraq. In the 27 September issue of the New York
> Review of Books, Thomas Powers, one of the most astute watchers of the
> intelligence world, admitted to a degree of bafflement. 'What's
> particularly odd,' he wrote, 'is that there seems to be no
> sophisticated, professional, insiders' version of the thinking that
> drove events.' Alan Greenspan, in his just published memoir, is
> clearer on the matter. 'I am saddened,' he writes, 'that it is
> politically inconvenient to acknowledge what everyone knows: the Iraq
> war is largely about oil.'
>
> Was the strategy of invading Iraq to take control of its oil resources
> actually hammered out by Cheney's 2001 energy task force? One can't
> know for sure, since the deliberations of that task force, made up
> largely of oil and energy company executives, have been kept secret by
> the administration on the grounds of 'executive privilege'. One can't
> say for certain that oil supplied the prime motive. But the hypothesis
> is quite powerful when it comes to explaining what has actually
> happened in Iraq. The occupation may seem horribly botched on the face
> of it, but the Bush administration's cavalier attitude towards 'nation-
> building' has all but ensured that Iraq will end up as an American
> protectorate for the next few decades - a necessary condition for the
> extraction of its oil wealth. If the US had managed to create a
> strong, democratic government in an Iraq effectively secured by its
> own army and police force, and had then departed, what would have
> stopped that government from taking control of its own oil, like every
> other regime in the Middle East? On the assumption that the Bush-
> Cheney strategy is oil-centred, the tactics - dissolving the army, de-
> Baathification, a final 'surge' that has hastened internal migration -
> could scarcely have been more effective. The costs - a few billion
> dollars a month plus a few dozen American fatalities (a figure which
> will probably diminish, and which is in any case comparable to the
> number of US motorcyclists killed because of repealed helmet laws) -
> are negligible compared to $30 trillion in oil wealth, assured
> American geopolitical supremacy and cheap gas for voters. In terms of
> realpolitik, the invasion of Iraq is not a fiasco; it is a resounding
> success.
>
> Still, there is reason to be sceptical of the picture I have drawn: it
> implies that a secret and highly ambitious plan turned out just the
> way its devisers foresaw, and that almost never happens.
>
> Jim Holt writes for the New York Times Magazine and the New Yorker.




From darklord at timehorse.com  Sat Oct 27 12:03:59 2007
From: darklord at timehorse.com (TimeHorse)
Date: Sat, 27 Oct 2007 16:03:59 -0000
Subject: Consistent mapping from frame to function
Message-ID: <1193501039.356362.220830@o80g2000hse.googlegroups.com>

Is there a consistent way to map a frame object to a function / method
object?  Methods usually hang off of parameter 1, and functions
usually in the global or local scope.  But lambda functions and
decorators are not so easily mapped.  You can get access to the
executing code object from the frame, but I don't see a consistent way
to map it to the function.  Any suggestion?



From paul at boddie.org.uk  Tue Oct  2 19:02:10 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Tue, 02 Oct 2007 16:02:10 -0700
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191357331.091076.140040@19g2000hsx.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<7xr6kez5aa.fsf@ruckus.brouhaha.com>
	<1191293650.355504.312590@n39g2000hsh.googlegroups.com>
	<1191317352.082848.30060@g4g2000hsf.googlegroups.com>
	<1191357331.091076.140040@19g2000hsx.googlegroups.com>
Message-ID: <1191366130.789094.32510@w3g2000hsg.googlegroups.com>

On 2 Okt, 22:35, bramble <cadet.bram... at gmail.com> wrote:
>
> Ahh... Ok. Thanks, that explains it. At first, it hadn't ocurred to me
> that anyone would want to provide a GUI toolkit binding along with a
> popular general purpose programming language implementation. Moreover,
> it *really* wouldn't occur to me that they'd also want to provide an
> IDE (as Terry mentions in another reply). But then, I'm looking at
> Python today, in 2007, at a time when Python has multiple high-quality
> GUI toolkit bindings available, and when most editors and IDE's have
> excellent Python support built-in.

Yes, and if you consider the situation about ten or more years ago, it
was rather different from now: Tk had been the most promising open
source cross-platform toolkit for a number of years (Qt wasn't open
source until 1998 and wasn't Free Software until 2000 [1]; Gtk+ was
only just getting started [2]; wxWindows, as it was then - and should
really still be - provided support for different backends, but on UNIX-
like platforms relied on legacy toolkits like Xt and Motif [3]), and
many languages offered Tk bindings in order to show their suitability
for GUI programming. Java was probably the first notable mainstream
language of the day to shun Tk, but even languages/runtimes like Limbo/
Inferno (which wasn't open source back then) provided a Tk-like
interface if not Tk itself, and I think a number of less well-known
languages of a certain age offer Tk bindings just as the standard
CPython distribution does.

> Given that line of reasoning though, it seems odd to me that GvR and
> Co. would still regard shipping those as part of Python proper as a
> requirement for Py3k.

If they aren't broken then there's no need to fix them, even after the
controlled breakage involved in the making of Python 3000. ;-)

Paul

[1] http://trolltech.com/company/about/milestones
    (note the difference between "open source" and the stricter Free
Software criteria)
[2] http://docs.gimp.org/en/gimp-introduction-history-early-days.html
[3] http://www.wxwidgets.org/about/history.htm



From paul.hankin at gmail.com  Thu Oct 11 14:53:03 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 11 Oct 2007 11:53:03 -0700
Subject: Declarative properties
In-Reply-To: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
Message-ID: <1192128783.192999.91460@22g2000hsm.googlegroups.com>

On Oct 11, 12:48 pm, Artur Siekielski <artur.siekiel... at gmail.com>
wrote:
> Hi.
>
> I would like to have declarative properties in Python, ie. something
> like slots definitions in defclass in Common Lisp. It seems that even
> Java will have it, using a library (https://bean-properties.dev.java.net/
> ).
>
> I know about 'property' function in Python, but it's normal usage
> isn't declarative, because I have to code imperatively getters and
> setters:
>
> class Person(object):
>    def __init__(self, name):
>       self._name = name
>    def _get_name(self):
>       return self._name
>    def _set_name(self, new_name):
>       self._name = new_name
>    name = property(_get_name, _set_name)
>
> I would like to have something like that:
>
> class Person(object):
>    name = property('_name')

Here's something that does what I think you want. I think your use
case is quite unusual in that you expect the public accessors to
change (keeping private use the same), and that you know you're going
to have a costly rewrite of your class when that happens.

Attributes that are declared with 'magic_attribute' access the private
attribute '_<name>', unless there's a '_get_<name>' or '_set_<name>'
method in which case those are called instead.

def magic_attribute(_name):
    def set(self, value):
        try:
            getattr(self, '_set' + _name)(value)
        except AttributeError:
            setattr(self, _name, value)
    def get(self):
        try:
            return getattr(self, '_get' + _name)()
        except AttributeError:
            return getattr(self, _name)
    return property(get, set)

# An example use...
class C(object):
    x = magic_attribute('_x')
    y = magic_attribute('_y')

    # Override the default set method for x
    def _set_x(self, value):
        self._x = value + ' world'

    # Override the default get method for y
    def _get_y(self):
        return self._y.upper()

# Test it works...
c = C()
c.x = c.y = 'hello'
print c.x
print c.y

# hello world
# HELLO

--
Paul Hankin



From jcd at sdf.lonestar.org  Thu Oct  4 12:05:37 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Thu, 4 Oct 2007 12:05:37 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <4704fd8e$0$16099$9b4e6d93@newsspool1.arcor-online.net>
References: <85ve9ov971.fsf@lola.goethe.zz> <fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<47041303$0$13930$fa0fcedb@news.zen.co.uk>
	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>
	<fe26tn$vs0$5@lust.ihug.co.nz>
	<mailman.1501.1191493515.2658.python-list@python.org>
	<fe2jdd$84p$1@lust.ihug.co.nz>
	<mailman.1503.1191498918.2658.python-list@python.org>
	<4704fd8e$0$16099$9b4e6d93@newsspool1.arcor-online.net>
Message-ID: <20071004160537.GA28649@sdf.lonestar.org>

On Thu, Oct 04, 2007 at 04:49:50PM +0200, Wildemar Wildenburger wrote regarding Re: The Modernization of Emacs: terminology buffer and keybinding:
> 
> Steve Holden wrote:
> > Lawrence D'Oliveiro wrote:
> >> In message <mailman.1501.1191493515.2658.python-list at python.org>, Steve
> >> Holden wrote:
> >>
> >>> Lawrence D'Oliveiro wrote:
> >>>
> >>>> In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>, George Neuner
> >>>> wrote:
> >>>>
> >>>>> The Christian Bible says "In the beginning was the Word..."
> >>>> Which is an English mistranslation from the Greek "logos".
> >>> So, now you're telling me that the Garden of Eden was actually a
> >>> *marketing campaign*?
> >>
> >> Different Bible book, different author, different original language.
> > 
> > So Genesis was written in Hebrew? I have no clue as to where the 
> > manuscripts were found.
> > 
> Am I missing a joke here? What are you talking about?
> 
I'm trying to figure that out myself...

> Different book? From what book would the first sentence in the Bible be, 
> if not from the first book (yeah yeah, from the publisher, haw-haw :-|)?
> 

Yeah, different book.  "In the beginning was the Word" is John's cosmology.  Written in Greek long after Genesis, and a couple decades after Jesus was executed. 

Also, I wouldn't so much say that "word" is a mistranslation.  Logos does indeed mean "word" in common usage, it just also carries along the baggage of reason, "logic" (for a loose definintion of which), rationality, and so forth.  So it's not so much inaccurate as inadequate.

> And Genesis and all other of Moe's books where written in Hebrew. No 
> doubt about that. Its (part of) the /Hebrew/ Bible, after all. 
> <URL:http://en.wikipedia.org/wiki/Torah>
> 
> I can't program with discussions like this going on ;)
> /W

For real.  Not much python in this thread.  And yet, here I am, sucked into posting to a thread that I've spent the past three or four days wishing would die....

Sigh.

Cliff


From mensanator at aol.com  Wed Oct 17 22:32:02 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Wed, 17 Oct 2007 19:32:02 -0700
Subject: Noob questions about Python
In-Reply-To: <1192658316.048082.212190@v23g2000prn.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
Message-ID: <1192674722.719010.36670@q3g2000prf.googlegroups.com>

On Oct 17, 4:58 pm, Ixiaus <parnel... at comcast.net> wrote:
> Thank you for the quick responses.
>
> I did not know that about integer literals beginning with a '0', so
> thank you for the explanation. I never really use PHP except for
> handling basic forms and silly web stuff, this is why I picked up
> Python because I want to teach myself a more powerful and broad
> programming language.
>
> With regard to why I asked: I wanted to learn about Binary math in
> conjunction with Python, so I wrote a small function that would return
> a base 10 number from a binary number. It is nice to know about the
> int() function now.
>
> Just for the sake of it, this was the function I came up with:
>
> def bin2dec(val):
>     li = list(val)
>     li.reverse()
>     res = [int(li[x])*2**x for x in range(len(li))]
>     res.reverse()
>     print sum(res)
>
> Now that I look at it, I probably don't need that last reverse()
> because addition is commutative...
>
> def bin2dec(val):
>     li = list(val)
>     li.reverse()
>     res = [int(li[x])*2**x for x in range(len(li))]
>     print sum(res)
>
> It basically does the same thing int(string, 2) does.
>
> Thank you for the responses!

You could also get ahold of the gmpy module. You get conversion
to binary and also some useful other binary functions as shown
below:

# the Collatz Conjecture in binary

import gmpy

n = 27
print '%4d %s' % (n,gmpy.digits(n,2).zfill(16))

sv = []  # sequence vector, blocks of contiguous LS 0's

while n != 1:
  old_n = n
  n = 3*n + 1                  # result always even
  f = gmpy.scan1(n,0)          # find least significant 1 bit
  n >>= f                      # remove LS 0's in one fell swoop
  sv.append(f)                 # record f sequence
  PopC = gmpy.popcount(n)      # count of 1 bits
  HamD = gmpy.hamdist(n,old_n) # bits changed
  print '%4d %s' % (n,gmpy.digits(n,2).zfill(16)),
  print 'PopC:%2d  HamD:%2d' % (PopC,HamD)

print sv

##  27 0000000000011011
##  41 0000000000101001 PopC: 3  HamD: 3
##  31 0000000000011111 PopC: 5  HamD: 4
##  47 0000000000101111 PopC: 5  HamD: 2
##  71 0000000001000111 PopC: 4  HamD: 3
## 107 0000000001101011 PopC: 5  HamD: 3
## 161 0000000010100001 PopC: 3  HamD: 4
## 121 0000000001111001 PopC: 5  HamD: 4
##  91 0000000001011011 PopC: 5  HamD: 2
## 137 0000000010001001 PopC: 3  HamD: 4
## 103 0000000001100111 PopC: 5  HamD: 6
## 155 0000000010011011 PopC: 5  HamD: 6
## 233 0000000011101001 PopC: 5  HamD: 4
## 175 0000000010101111 PopC: 6  HamD: 3
## 263 0000000100000111 PopC: 4  HamD: 4
## 395 0000000110001011 PopC: 5  HamD: 3
## 593 0000001001010001 PopC: 4  HamD: 7
## 445 0000000110111101 PopC: 7  HamD: 7
## 167 0000000010100111 PopC: 5  HamD: 4
## 251 0000000011111011 PopC: 7  HamD: 4
## 377 0000000101111001 PopC: 6  HamD: 3
## 283 0000000100011011 PopC: 5  HamD: 3
## 425 0000000110101001 PopC: 5  HamD: 4
## 319 0000000100111111 PopC: 7  HamD: 4
## 479 0000000111011111 PopC: 8  HamD: 3
## 719 0000001011001111 PopC: 7  HamD: 3
##1079 0000010000110111 PopC: 6  HamD: 7
##1619 0000011001010011 PopC: 6  HamD: 4
##2429 0000100101111101 PopC: 8  HamD: 8
## 911 0000001110001111 PopC: 7  HamD: 7
##1367 0000010101010111 PopC: 7  HamD: 6
##2051 0000100000000011 PopC: 3  HamD: 6
##3077 0000110000000101 PopC: 4  HamD: 3
## 577 0000001001000001 PopC: 3  HamD: 5
## 433 0000000110110001 PopC: 5  HamD: 6
## 325 0000000101000101 PopC: 4  HamD: 5
##  61 0000000000111101 PopC: 5  HamD: 5
##  23 0000000000010111 PopC: 4  HamD: 3
##  35 0000000000100011 PopC: 3  HamD: 3
##  53 0000000000110101 PopC: 4  HamD: 3
##   5 0000000000000101 PopC: 2  HamD: 2
##   1 0000000000000001 PopC: 1  HamD: 1
##[1, 2, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 2,
## 1, 1, 1, 2, 3, 1, 1, 2, 1, 2, 1, 1, 1,
## 1, 1, 3, 1, 1, 1, 4, 2, 2, 4, 3, 1, 1,
## 5, 4]



From salvatore.didio at gmail.com  Sat Oct 13 04:41:16 2007
From: salvatore.didio at gmail.com (Salvatore)
Date: Sat, 13 Oct 2007 10:41:16 +0200
Subject: Python in HTML Application (HTA)
Message-ID: <47108428$0$25937$ba4acef3@news.orange.fr>

Hello,

I encounter a display problem in one of my script

...
...
def setValue(divid,data):
     elt = document.getElementById(divid)
     elt.innerHTML = data

def infoSystem():
     setValue("info","Please Wait")      #update div "info"
     c = os.popen(cmdDisk%Server).read()
     setValue('tabcentre',c)
...
...

When I call 'infoSystem', the 'info' div
is only updated at the end of the 'infoSystem' call.
Did someone have an explication of that behavior ?

Regards

Salvatore





From adam at volition-inc.com  Fri Oct  5 18:12:54 2007
From: adam at volition-inc.com (Adam Pletcher)
Date: Fri, 5 Oct 2007 17:12:54 -0500
Subject: howto kill a windows process by name ?
In-Reply-To: <4706AF37.3000901@gmail.com>
References: <4706AF37.3000901@gmail.com>
Message-ID: <893A44FF792E904A97B7515CE3419146017BD2CD@volimxs01.thqinc.com>

Take a look at "killProcName.py", in the win32 extension package.

- Adam

> -----Original Message-----
> From: python-list-bounces+adam=volition-inc.com at python.org
> [mailto:python-list-bounces+adam=volition-inc.com at python.org] On
Behalf
> Of stef mientki
> Sent: Friday, October 05, 2007 4:40 PM
> To: python-list at python.org
> Subject: howto kill a windows process by name ?
> 
> hello,
> 
> is there a library to kill a windows process by name ?
> 
> thanks,
> Stef Mientki
> --
> http://mail.python.org/mailman/listinfo/python-list


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct  3 02:53:09 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 08:53:09 +0200
Subject: global variables
In-Reply-To: <mailman.1418.1191369536.2658.python-list@python.org>
References: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
	<mailman.1418.1191369536.2658.python-list@python.org>
Message-ID: <47033c49$0$7365$426a74cc@news.free.fr>

Colin J. Williams a ?crit :
> TheFlyingDutchman wrote:
>> Does anyone know how the variables label and scale are recognized
>> without a global statement or parameter, in the function resize() in
>> this code:
>>
>>
>>
>> #!/usr/bin/env python
>>
>> from Tkinter import *
>>
>> def resize(ev=None):
>>       label.config(font='Helvetica -%d bold' % \
>>           scale.get())
>>
>>
(snip code binding label and scale)
> 
> label and scale are instances.

And ? *Everything* you can bind to a name is an instance.



From python.list at tim.thechases.com  Wed Oct 10 16:12:48 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 10 Oct 2007 15:12:48 -0500
Subject: for loop question
In-Reply-To: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
Message-ID: <470D3240.6020601@tim.thechases.com>

> test = u"Hello World"
> 
> for cur,next in test:
>     print cur,next
> 
> Ideally, this would output:
> 
> 'H', 'e'
> 'e', 'l'
> 'l', 'l'
> 'l', 'o'
> etc...
> 
> Of course, the for loop above isn't valid at all. I am just giving an
> example of what I'm trying to accomplish. Anyone know how I can achieve the
> goal in the example above? Thanks.

A "works-for-me":

 >>> pairs = (test[i:i+2] for i in xrange(len(test)-1))
 >>> for a,b in pairs:
...     print a,b
...
H e
e l
l l
l o
o
   w
w o
o r
r l
l d
 >>>

-tkc





From paul.hankin at gmail.com  Fri Oct 19 13:17:10 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Fri, 19 Oct 2007 17:17:10 -0000
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <mailman.220.1192811880.13605.python-list@python.org>
References: <mailman.201.1192778546.13605.python-list@python.org>
	<1192779222.618164.321910@y27g2000pre.googlegroups.com>
	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>
	<13hhicd14jrt5e3@corp.supernews.com>
	<mailman.220.1192811880.13605.python-list@python.org>
Message-ID: <1192814230.435306.145100@i13g2000prf.googlegroups.com>

On Oct 19, 5:38 pm, stef mientki <stef.mien... at gmail.com> wrote:
> ... snip hand-coded debugger
> I couldn't come up with a better solution ;-)

Does pdb not suffice?

Even if it doesn't; you can look up variables without using exec,
using locals()['x'] or globals()['x']

--
Paul Hankin



From niketmhatre.python at gmail.com  Mon Oct 22 03:26:16 2007
From: niketmhatre.python at gmail.com (niket mhatre)
Date: Mon, 22 Oct 2007 12:56:16 +0530
Subject: Hi to every one
Message-ID: <241c3ebb0710220026u31f742b1nb2784ebad5ac6ded@mail.gmail.com>

Hello to every member of this list.
Can any one tell me where to find various python development in to linux
clustering? Just give me some startup info for searching such material. I m
starting to writing some patches in my existed cluster at my college. Just
look for python development held in this area.
Hey i was active member of this from last 2 year, i had just changed my
email address.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/1002fc7b/attachment.html>

From none at try.invalid  Thu Oct 25 11:57:05 2007
From: none at try.invalid (Pete Bartonly)
Date: Thu, 25 Oct 2007 16:57:05 +0100
Subject: local variable referenced before assignment
In-Reply-To: <slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
	<slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
Message-ID: <4720BCD1.605@try.invalid>

A.T.Hofkamp wrote:
> On 2007-10-25, Pete Bartonly <none at try.invalid> wrote:
>> Quick question, probably quite a simple matter. Take the follow start of 
>> a method:

> With respect to compactness and style, you can move your multi-assignment
> statement in the for loop, as in
[snip]

Btw, thanks for the tips on style too!
Pete


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct  5 06:10:59 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 05 Oct 2007 12:10:59 +0200
Subject: migrating to packages
In-Reply-To: <mailman.1530.1191526997.2658.python-list@python.org>
References: <4703C661.50009@fmed.uba.ar>	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>	<mailman.1488.1191461205.2658.python-list@python.org>	<47045b29$0$11005$4c368faf@roadrunner.com>
	<mailman.1530.1191526997.2658.python-list@python.org>
Message-ID: <47060d9a$0$30531$426a74cc@news.free.fr>

Gerardo Herzig a ?crit :
> Carl Bank a ?crit :
>>
>> Add these lines in __init__.py:
>>
>> from MYCLASSES.A import A
>> from MYCLASSES.B import B
>>  
>>
> Ummm, that works indeed, but forces me to import all (more than A and B) 
> classes, rigth?

Why so ?



From noone at nowhere.com  Mon Oct 29 02:11:27 2007
From: noone at nowhere.com (avidfan)
Date: Mon, 29 Oct 2007 01:11:27 -0500
Subject: Help with pyparsing and dealing with null values
Message-ID: <l8uai3pu2cveg2p7tljm5vs7rit6eeglv8@4ax.com>

Help with pyparsing and dealing with null values

I am trying to parse a log file (web.out) similar to this:

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

MBeanName: "mtg-model:Name=mtg-model_managed2,Type=Server"
        AcceptBacklog: 50
        AdministrationPort: 0
        AutoKillIfFailed: false
        AutoRestart: true
        COM: mtg-model_managed2
        COMEnabled: false
        CachingDisabled: true
        ClasspathServletDisabled: false
        ClientCertProxyEnabled: false
        Cluster: mtg-model-cluster
        ClusterRuntime: mtg-model-cluster
        ClusterWeight: 100
        CompleteCOMMessageTimeout: -1
        CompleteHTTPMessageTimeout: -1
        CompleteIIOPMessageTimeout: -1
        CompleteMessageTimeout: 60
        CompleteT3MessageTimeout: -1
        CustomIdentityKeyStoreFileName:
        CustomIdentityKeyStorePassPhrase:
        CustomIdentityKeyStorePassPhraseEncrypted:
        CustomIdentityKeyStoreType:
        CustomTrustKeyStoreFileName:
        CustomTrustKeyStorePassPhrase:
        CustomTrustKeyStorePassPhraseEncrypted:
        CustomTrustKeyStoreType:
        DefaultIIOPPassword:
        DefaultIIOPPasswordEncrypted:
        DefaultIIOPUser:
        DefaultInternalServletsDisabled: false
        DefaultProtocol: t3
        DefaultSecureProtocol: t3s
        DefaultTGIOPPassword:
        DefaultTGIOPPasswordEncrypted: ******
        DefaultTGIOPUser: guest
        DomainLogFilter:
        EnabledForDomainLog: true
        ExecuteQueues: weblogic.kernel.Default,foglight
        ExpectedToRun: false
        ExternalDNSName:
        ExtraEjbcOptions:
        ExtraRmicOptions:
        GracefulShutdownTimeout: 0
		
-----------------------------------------------------------

and I need the indented values (eventually) in a dictionary.  As you
can see, some of the fields have a value, and some do not.  It appears
that the code I have so far is not dealing with the null values and
colons as I had planned.  Here is the code:

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

from pyparsing import *

input = open("web.out", 'r')
data = input.read()

end = Literal("\n").suppress()
all = SkipTo(end)
colon = Literal(":").suppress()
MBeanName = Literal("MBeanName:")
ServerName = dblQuotedString
identity = Word(alphas, alphanums+"._*/,-")
pairs = Group(identity + colon + Optional(identity) +all)

logEntry = MBeanName + ServerName.setResultsName("servername") +
OneOrMore(pairs)

for tokens in logEntry.searchString(data):
    print
    print "ServerName =\t "+ tokens.servername
    for t in tokens:
       print t
    print
    print 50*"-"

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

which is giving me this:

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

ServerName =     "mtg-model:Name=mtg-modelserver_map501,Type=Server"
MBeanName:
"mtg-model:Name=mtg-modelserver_map501,Type=Server"
['AcceptBacklog', '50']
['AdministrationPort', '0']
['AutoKillIfFailed', 'false', 'AutoRestart: true']
['COM', 'mtg-modelserver_map501', 'COMEnabled: false']
['CachingDisabled', 'true', 'ClasspathServletDisabled: false']
['ClientCertProxyEnabled', 'false', 'Cluster:']
['ClusterRuntime', 'ClusterWeight', ': 100']
['CompleteCOMMessageTimeout', '-1']
['CompleteHTTPMessageTimeout', '-1']
['CompleteIIOPMessageTimeout', '-1']
['CompleteMessageTimeout', '60']
['CompleteT3MessageTimeout', '-1']
['CustomIdentityKeyStoreFileName', 'CustomIdentityKeyStorePassPhrase',
':']
['CustomIdentityKeyStorePassPhraseEncrypted',
'CustomIdentityKeyStoreType', ':']
['CustomTrustKeyStoreFileName', 'CustomTrustKeyStorePassPhrase', ':']
['CustomTrustKeyStorePassPhraseEncrypted', 'CustomTrustKeyStoreType',
':']
['DefaultIIOPPassword', 'DefaultIIOPPasswordEncrypted', ':']
['DefaultIIOPUser', 'DefaultInternalServletsDisabled', ': false']
['DefaultProtocol', 't3', 'DefaultSecureProtocol: t3s']
['DefaultTGIOPPassword', 'DefaultTGIOPPasswordEncrypted', ': ******']
['DefaultTGIOPUser', 'guest', 'DomainLogFilter:']
['EnabledForDomainLog', 'true', 'ExecuteQueues:
weblogic.kernel.Default,foglight']
['ExpectedToRun', 'false', 'ExternalDNSName:']
['ExtraEjbcOptions', 'ExtraRmicOptions', ':']
['GracefulShutdownTimeout', '0']

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

instead of this (one to one):

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

ServerName =     "mtg-model:Name=mtg-modelserver_map501,Type=Server"
MBeanName:
"mtg-model:Name=mtg-modelserver_map501,Type=Server"
['AcceptBacklog', '50']
['AdministrationPort', '0']
['AutoKillIfFailed', 'false']
['AutoRestart', 'true']
['COM', 'mtg-modelserver_map501']
['COMEnabled', 'false']
['CachingDisabled', 'true']
['ClasspathServletDisabled', false']
['ClientCertProxyEnabled', 'false']
['Cluster', 'mtg-model-cluster']
['ClusterRuntime', 'mtg-model-cluster']
['ClusterWeight', '100']
['CompleteCOMMessageTimeout', '-1']
['CompleteHTTPMessageTimeout', '-1']
['CompleteIIOPMessageTimeout', '-1']
['CompleteMessageTimeout', '60']
['CompleteT3MessageTimeout', '-1']
['CustomIdentityKeyStoreFileName', '']
['CustomIdentityKeyStorePassPhrase', '']
['CustomIdentityKeyStorePassPhraseEncrypted', '']
['CustomIdentityKeyStoreType', '']
['CustomTrustKeyStoreFileName', '']
['CustomTrustKeyStorePassPhrase', '']
['CustomTrustKeyStorePassPhraseEncrypted', '']
['CustomTrustKeyStoreType', '']
['DefaultIIOPPassword', '']
['DefaultIIOPPasswordEncrypted', '']
['DefaultIIOPUser', '']
['DefaultInternalServletsDisabled', 'false']
['DefaultProtocol', 't3']
['DefaultSecureProtocol: t3s']
['DefaultTGIOPPassword', '']
['DefaultTGIOPPasswordEncrypted', '******']
['DefaultTGIOPUser', 'guest']
['DomainLogFilter', '']
['EnabledForDomainLog', 'true']
['ExecuteQueues', 'weblogic.kernel.Default,foglight']
['ExpectedToRun', 'false']
['ExternalDNSName', '']
['ExtraEjbcOptions', '']
['ExtraRmicOptions', '']
['GracefulShutdownTimeout', '0']
 
------------------------------------------------------------------

Can anyone offer any advice on this?  I would certainly appreciate any
input.

Thanks!


From paddysmith at gmail.com  Thu Oct 11 14:18:33 2007
From: paddysmith at gmail.com (patrimith)
Date: Thu, 11 Oct 2007 11:18:33 -0700 (PDT)
Subject: determining fully qualified package & class name
Message-ID: <13161736.post@talk.nabble.com>


Hi List,

I am used to the following with Java:

import some.package.MyClass;
name = MyClass.class.getName();

The value for name will be "some.package.MyClass".

For Python, I find:

from some.package.myclass import MyClass
name = MyClass.__name__

The value for  name will be "MyClass"

Is there a comparable way to get the fully qualified name (package, module,
and class name) in Python?

Thanks,
Patrick Smith
-- 
View this message in context: http://www.nabble.com/determining-fully-qualified-package---class-name-tf4609111.html#a13161736
Sent from the Python - python-list mailing list archive at Nabble.com.



From andreas.tawn at ubisoft.com  Mon Oct  8 06:09:28 2007
From: andreas.tawn at ubisoft.com (Andreas Tawn)
Date: Mon, 8 Oct 2007 12:09:28 +0200
Subject: Really basic problem
In-Reply-To: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
Message-ID: <8AEDA5E3386EA742B8C24C95FF0C758002769327@PDC-MAIL3.ubisoft.org>

> i know this example is stupid and useless, but that's not the answer
> to my question.
> here it goes:
> 
> status = 0.0
> for i in range(10):
>    status = status + 0.1
> 
>    if status == 0.1:
>        print status
>    elif status == 0.2:
>        print status
>    elif status == 0.3:
>        print status
>    elif status == 0.4:
>        print status
>    elif status == 0.5:
>        print status
>    elif status == 0.6:
>        print status
>    elif status == 0.7:
>        print status
>    elif status == 0.8:
>        print status
>    elif status == 0.9:
>        print status
>    elif status == 1.0:
>        print status
> 
> the expected output:
> 0.1
> 0.2
> 0.3
> 0.4
> 0.5
> 0.6
> 0.7
> 0.8
> 0.9
> 1.0
> 
> but it gives me instead:
> 0.1
> 0.2
> 0.4
> 0.5
> 0.6
> 0.7
> 
> why?
> 
> thanks,
> 
> m.

You've just discovered the joys of floating point number comparisons.

Consider this snippet:

status = 0.0
print (repr(status))

for i in range(10):
    status += 0.1
    print (repr(status))

Output:

0.0
0.10000000000000001
0.20000000000000001
0.30000000000000004
0.40000000000000002
0.5
0.59999999999999998
0.69999999999999996
0.79999999999999993
0.89999999999999991
0.99999999999999989

The issue is that 0.1 etc don't have an exact representation as floating
point.

Interestingly:

>>> 0.10000000000000001 == 0.1
True
>>> 0.30000000000000004 == 0.3
False

I guess this means that Python has some concept of "close enough", but
I'll have to defer to someone more knowledgeable to explain that.

Cheers,

Andreas Tawn
Lead Technical Artist
Ubisoft Reflections


From rsachetto at gmail.com  Mon Oct 22 14:44:15 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Mon, 22 Oct 2007 16:44:15 -0200
Subject: Iteration for Factorials
In-Reply-To: <87bqarov3n.fsf@rudin.co.uk>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
Message-ID: <250fcec00710221144g5c946d6fg87ca176147eacb64@mail.gmail.com>

The right way is:

import operator
def fact(x):
   return reduce(operator.mul, xrange(1,x+1))

On 10/22/07, Paul Rudin <paul.nospam at rudin.co.uk> wrote:
>
> "mensanator at aol.com" <mensanator at aol.com> writes:
>
> > On Oct 22, 7:50 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> >> Py-Fun <lorna.bu... at gmail.com> wrote:
> >> > I'm stuck trying to write a function that generates a factorial of a
> >> > number using iteration and not recursion.  Any simple ideas would be
> >> > appreciated.
> >>
> >> This version avoids doing anything fancier than adding 1, so it should
> be
> >> simple enough for anyone:
> >>
> >> def factorial(e):
> >>     a = 1
> >>     for b in range(e):
> >>         c = 0
> >>         for j in range(b, -1, -1):
> >>             for d in range(a):
> >>                 c += 1
> >>         a = c
> >>     return a
> >
> > Not simple enough for my taste:
> >
> >>>> import gmpy
> >>>> gmpy.fac(10)
> > mpz(3628800)
>
> I haven't followed all this thread, but has anyone yet done:
>
> import operator
> def fact(x):
>     return reduce(operator.mul, xrange(1,x))
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/88455668/attachment.html>

From vasudevram at gmail.com  Mon Oct 15 11:49:50 2007
From: vasudevram at gmail.com (vasudevram)
Date: Mon, 15 Oct 2007 15:49:50 -0000
Subject: View XMLRPC Requests/Responses?
In-Reply-To: <5nhe7fFi4prbU1@mid.uni-berlin.de>
References: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
	<5nhe7fFi4prbU1@mid.uni-berlin.de>
Message-ID: <1192463390.951199.87670@z24g2000prh.googlegroups.com>

On Oct 15, 8:10 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> xkenneth wrote:
> > Hi,
>
> >     I'm working on developing an XML-RPC interface from LabVIEW to
> > python and I would really like to see how python is forming it's XML-
> > RPC requests/responses. Is there any way I can force these to a log or
> > print them to the screen? Thanks.
>
> I've utilized the apache axis tcpmon for that, as proxy. See
>
> http://docs.pushtotest.com/axisdocs/user-guide.html#tcpmon
>
> Diez

I haven't used apache axis tcpmon - so don't know how easy or
difficult it is to use that approach - but if its non-trivial or
awkward, there's another easy way - since the xmlrpc lib source is
available - and it is, its part of the Python Standard library - just
root around in the source and modify it to log to a file or to the
screen. Will be pretty straightforward to do it. Its a hack, though, I
know - because your changes would need to be carried around everywhere
you want to use them (but then so does your code), and also because
they would get clobbered when you upgraded to the next Python
release.

So a better way might be to inherit from an appropriate class of
xmlrpclib client or server, use that class in your code instead, and
modify the inherited class to log as needed, by getting hold of some
output stream of the parent class - if it is exposed.

<a href="http://www.dancingbison.com">Vasudev Ram</a>




From vinay_sajip at yahoo.co.uk  Sun Oct 21 10:52:07 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Sun, 21 Oct 2007 07:52:07 -0700
Subject: logging module - restricted mode error
In-Reply-To: <87ejfphsg5.fsf@rudin.co.uk>
References: <87przflpir.fsf@rudin.co.uk>
	<1192907914.138999.114910@k35g2000prh.googlegroups.com>
	<87ejfphsg5.fsf@rudin.co.uk>
Message-ID: <1192978327.709113.310250@y27g2000pre.googlegroups.com>

On 21 Oct, 07:50, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
> > Can you say a little bit more about the execution environment? For
> > example, are you running under mod_python? If so, which version?
>
> I'm not running under mod_python - but this is using cherrypy. I also
> do some passing of pickled objects between two python processes, which
> I guess could be relevant.
>
> > When googling, did you search for the exact text of the error message?
> > For example, did you see the following post?
>
> > http://mail-archives.apache.org/mod_mbox/httpd-python-dev/200404.mbox/%3C408661A5.3010... at sjsoft.com%3E
>
> I hadn't noticed that particularly, but I'm still a little unclear as
> to what's going on. That thread dates from 3 years ago and it seems to
> imply that mod python is using restricted mode (in the sense of the
> the rexec module), which won't run in 2.5 will it?
>
> One parts that says:
>
>   "Restricted mode is a strange beast, in that there isn't really
>    anything like a "restricted mode" flag, but it looks at a pointer
>    somwhere (don't remember now), and if it's not what is expected, it
>    concludes that it's in restricted mode. So this behaviour is
>    actually a sign of a bug where an object is created in one
>    subinterpreter but is running in another... These bugs can be hard
>    to track down."
>
> What exactly is meant by a subinterpreter? Python running in a
> subprocess?

I'm no mod_python expert: I just wondered whether you might be hitting
the same problem. The way I read it, the "restricted mode" referred to
in that post is not in the rexec sense, but based on some more obscure
heuristic to do with multiple interpreters. Anyway: I don't think it's
specifically a logging problem, except that logging does introspect
(look at LogRecord.__dict__) and this raises the error. But in that,
it's no different to lots of other stdlib and third party modules.

Vinay



From larry.bates at websafe.com  Tue Oct  9 07:56:04 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 09 Oct 2007 06:56:04 -0500
Subject: Editing particular lines of a text file.
In-Reply-To: <1191928770.776311.226710@r29g2000hsg.googlegroups.com>
References: <1191928770.776311.226710@r29g2000hsg.googlegroups.com>
Message-ID: <boKdneqGppnN8ZbanZ2dnUVZ_gOdnZ2d@comcast.com>

Shriphani wrote:
> Hello all,
> 
> I am trying to create a script that looks at specific strings in a
> file like:
> 
> msgid "I am a disco dancer."
> 
> and compares the part in quotes to the keys in a dictionary, finds the
> value and creates a new line right after this string in the file. I
> have planned to write this as follows:
> 
> 1. Open the file in read mode
> 2. parse each line to figure out which line contains "msgid" and use
> the shlex module's split method to go and split this line and pick the
> 2nd element list[1].
> 3. find the value from the dictionary corresponding to the above
> element.
> 4. Insert the line. This part is where I face a problem. How do I
> plainly edit just one line. I would also like to look at some sample
> code that does this.
> 5. open a new file and write the new file with the inserted strings to
> it.
> 6. close both files opened.
> 
> Regards,
> Shriphani Palakodety
> 

Sounds like homework, but I'm feeling generous (not tested).

xlate={'"I am a disco dancer."':'"but John Travolta is better"'}


fp1=open('inputfile.txt', 'r')
fp2=open('outputfile.txt', 'w')

for line in fp1:
     #
     # Your description is unclear here about whether the new line
     # replaces the existing one or is inserted after it.
     #
     fp2.writeline(line)
     if line.startswith('msgid'):
	parts=line.split(' ')
         try: parts[1]=xlate[parts[1]]
	except:
             #
             # Handle exception if your translation dictionary does
             # not have the string you are looking for here.
             #
             raise KeyError

	newline=' '.join(parts)
         fp2.writeline(newline)

fp1.close()
fp2.close()


-Larry


From shafik23 at gmail.com  Thu Oct  4 12:52:49 2007
From: shafik23 at gmail.com (Shafik)
Date: Thu, 04 Oct 2007 09:52:49 -0700
Subject: Starting a thread before wxPython bootup ... interesting.
Message-ID: <1191516769.594037.191880@22g2000hsm.googlegroups.com>

Hello folks,

I'm having an issue with mixing wxPython and threading ... I realize
multi-threading always introduces subtle bugs, but the following
scenario is just odd:

I start a dummy thread, that does nothing but increment a counter and
print its value to the screen, then afterwards, I start the wxPython
application. I get nothing but weird behavior: sometimes the gui just
crashes, sometimes I get an exception, sometimes it runs for a little
but very slowly ...

Anyone know whats going on? I have a dual-core T5500, so multi
threading is piece of cake for it hardware -wise.


Cheers,
--Shafik



From sandy.dunlop at gmail.com  Wed Oct 24 16:48:19 2007
From: sandy.dunlop at gmail.com (Sandy Dunlop)
Date: Wed, 24 Oct 2007 21:48:19 +0100
Subject: Socket communication problem
References: <mailman.423.1193256081.13605.python-list@python.org>
Message-ID: <471FAF93.1010302@gmail.com>

Jean-Paul Calderone wrote:

> Neither the server nor client Python programs you linked to uses the socket
> API correctly.  The most obvious mistake is that the code does not check the
> return value of socket.send(), which you must do.
> 
> Twisted is a third-party library which abstracts many of the low-level
> details of the BSD socket API away from you.  You might want to take a
> look at it.


Thankyou. I've managed to get it working now that I'm using the socket 
API correctly. In case anyone else has the same issue in the future, 
I'll leave my solution here:

     http://sorn.net/~sandyd/python/solution

I'll have a look at Twisted - sounds good.

Thanks,
Sandy




From adam at atlas.st  Tue Oct 23 10:15:44 2007
From: adam at atlas.st (Adam Atlas)
Date: 23 Oct 2007 07:15:44 -0700
Subject: web.py & postgresql error
In-Reply-To: <1193101575.928334.17790@e9g2000prf.googlegroups.com>
References: <1193101575.928334.17790@e9g2000prf.googlegroups.com>
Message-ID: <1193103986.278189.112900@v29g2000prd.googlegroups.com>

On Oct 22, 9:06 pm, dphol... at gmail.com wrote:
> hi everyone, i'm very new to python and to this forum.  i'm actually
> just trying to work through the tutorial on webpy.org.  so far, so
> good, but as i tried to incorporate a postgresql database into the
> demo web app i'm receiving this error print out:
>
> [...]
> ImportError: No module named pgdb
>
> any thoughts would be greatly appreciated.
> thanks,
> doug

It looks like you just haven't installed PyGreSQL yet. <http://
www.pygresql.org/>

Future web.py questions should probably be directed to the web.py
group <http://groups.google.com/group/webpy/>, though.



From fetchinson at googlemail.com  Sat Oct 13 14:09:51 2007
From: fetchinson at googlemail.com (Daniel Fetchinson)
Date: Sat, 13 Oct 2007 20:09:51 +0200
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <3F50B94B-73E0-47B2-900E-026C48CBABDE@cti.depaul.edu>
References: <1733A730-1B02-4057-82DF-C5FA9E2CD9C8@cti.depaul.edu>
	<fbe2e2100710130301q45de068mab9e32b1e6eccf8a@mail.gmail.com>
	<07D3B93C-2A6D-4651-816D-C1A432BA5146@cti.depaul.edu>
	<3F50B94B-73E0-47B2-900E-026C48CBABDE@cti.depaul.edu>
Message-ID: <fbe2e2100710131109w4feaf4f2le8fee9c1a3a1eeab@mail.gmail.com>

> ... I almost forgot ...
>
> another difference between Gluon and Django,TG is that in Gluon if
> you write controllers without view you automatically get generic view
> that render and BEAUTIFY() the variables returned by the controllers.
> That means you can develop the logic of your application without
> writing one line of HTML and you have a working prototype.
>
> Massimo
>
> > Hi Daniel,
> >
> > in many respects Gluon is similar to Django and was greatly inspired
> > by Django. Some differences are:
> >
> > Gluon is easier to install - you never need to use the shell, there
> > are no configuration files.
> >
> > Gluon is a web app. You can do all development via a web interface.
> >
> > You can compile Gluon apps and distribute them in byte-code compiled
> > form.
> >
> > Each Gluon app comes with a ticketing system. If an error occurrs it
> > is logged and a ticket is issed. you can then search and retrieve
> > errors by date or client-ip.
> >
> > Making forms is easier than in Django. For example given a db table
> > called db.table you can do:
> >    form=SQLForm(db.table)
> >    if form.accepts(request.vars,session): pass
> > these two lines will do everything, including generating the form
> > from the table, validating input, inserting in database or modifying
> > the form with error messages. This also prevents multiple submission
> > of the same form because each form has a unique one-time key.
> >
> > The template language is pure python but without indentation
> > requirements. Django has restrictions on what can go in templates.
> >
> > The output in the views is escaped by default. In Django it is not.
> >
> > You can manage internationalization (add language and write
> > translations)  from the web interface.
> >
> > Each app has an automatically generated database administrative
> > interface. The Django one is cooler then Gluon's, but the Gluon one
> > allows complicated joins in the filter field.
> >
> > Gluon supports migrations: you just change the definition of a table
> > and it ALTERs the table accordingly (drop works in postgres only).
> > For example if you change a field from boolean to string, the
> > database is altered and the values are converted from boolean to
> > string for existing records.
> >
> > Gluon has a sql.log console to see what changes are made to the
> > database.
> >
> > In Gluon you do not need to import modules. The gluon modules you
> > need already imported for you.
> >
> > Gluon has a top-down design. This means that the Gluon APIs are not
> > under development. They are 100% stable. There may be bugs and they
> > will be fixed but the syntax and signature of functions is not
> > subject to change. This is why I started making Gluon, I am teaching
> > a class on web frameworks and the API of Django and TG are not as
> > stable as I wish they were. Moreover they have a too steep learning
> > curve when compared to Gluon.
> >
> > Please try it, it is no that time consuming, and send me you comments
> > (good or bad)!
> >
> > Massimo
> >
> >
> >>> Hello everybody,
> >>>
> >>> I just joined this mailing list. Thanks for your comments about
> >>> gluon.
> >>>
> >>> I have posted a short video about it and I am planning to make more
> >>> over the week-end.
> >>>
> >>> http://www.youtube.com/watch?v=VBjja6N6IYk
> >>>
> >>> About some of your comments:
> >>> - the most complex modules (like html and sql ones) have doctests.
> >>> - the executable versions (win and mac) come with python2.5. Running
> >>> from source code does not require 2.5 but you probably want sqlite3.
> >>> - so far I support sqlite3 and postgresql, not mysql (just because I
> >>> do not use it and had no time for testing it).
> >>> - yes, there are typos in the documentation. Please point them
> >>> out to
> >>> me so that I can fix them.
> >>> - I am sure there are some minor bugs I am not aware of but as far I
> >>> tested, it work.
> >>> - If you report bugs to me I promise to fix them in 48hrs.
> >>> - please make sure you have the latest version.
> >>>
> >>> I very much appreciate comments about gluon (good and bad). Please
> >>> send me more so that I can improve it.
> >>>
> >>> There will be two talks in chicago about gluon next week: at DePaul
> >>> Linux Users Group on Thursday evening and at the Chicago Linux Users
> >>> Group on Saturday afternoon. I will try record them and post them.
> >>>
> >>> Massimo
> >>>
> >>> P.S. Michele Simionato. I have heard your name before? Is it
> >>> possible
> >>> we have met in Pisa in 1990-1996? I am also a Quantum Field Theorist
> >>> and there is not many of us.
> >>
> >>
> >> Hi Massimo,
> >>
> >> In what way is gluon different from existing frameworks most notably
> >> django and turbogears? What do you think are the advantages to using
> >> gluon over these two?
> >>
> >> Cheers,
> >> Daniel


Massimo, thanks a lot for the reply, I'll give gluon a try. I've just
started to use TG about 3 months ago and although I like it it would
be fun to have a real comparison (I didn't like django at all after a
couple of hours of playing with it).


From gagsl-py2 at yahoo.com.ar  Wed Oct 31 23:42:13 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 01 Nov 2007 00:42:13 -0300
Subject: marshal vs pickle
References: <mailman.669.1193815903.13605.python-list@python.org>
	<1193838300.998229.33380@v3g2000hsg.googlegroups.com>
	<1193852239.801436.326320@z24g2000prh.googlegroups.com>
	<1193858836.163776.31900@o3g2000hsb.googlegroups.com>
	<1193868648.073348.126810@t8g2000prg.googlegroups.com>
Message-ID: <op.t03gkniex6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 31 Oct 2007 19:10:48 -0300, Raymond Hettinger <python at rcn.com>  
escribi?:

> FWIW, I've updated the docs to be absolutely clear on the subject:

As you are into it, the list of supported types should be updated too:

> The following types are supported: ``None``, integers,
> long
> integers, floating point numbers, strings, Unicode objects, tuples,
> lists,
> dictionaries, and code objects,

boolean, complex, set and frozenset are missing.

-- 
Gabriel Genellina



From Mark.English at rbccm.com  Fri Oct 12 12:41:19 2007
From: Mark.English at rbccm.com (English, Mark)
Date: Fri, 12 Oct 2007 17:41:19 +0100
Subject: Convert obejct string repr to actual object
Message-ID: <EE7D40281B517A41AF5A90847A61F279379655CE@SEW39051.oak.fg.rbc.com>

> From: Tor Erik S?nvisen
> Date: October 8th 2007
> I've tried locating some code that can recreate an object from
> it's string representation... 
On a related note I've wondered about this:
>>> class Foo(object): pass
>>> f = Foo()
>>> s = repr(f)
>>> s
'<__main__.Foo object at 0x007CBAB0>'

So how do I get f back from s ?
Obviously this is open to abuse. I just wondered if a mechanism existed short of writing
a C-extension which parses that string, casts the hex number to a PyObject *, INCREFs it,
and gives it back...
______________________________________________________________________

This email is intended only for the use of the individual(s) to whom it is addressed and may be privileged and confidential.
Unauthorised use or disclosure is prohibited.If you receive This e-mail in error, please advise immediately and delete the original message.
This message may have been altered without your or our knowledge and the sender does not accept any liability for any errors or omissions in the message.


From ptmcg at austin.rr.com  Wed Oct 31 11:13:30 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Wed, 31 Oct 2007 08:13:30 -0700
Subject: help with pyparsing
In-Reply-To: <mailman.676.1193831997.13605.python-list@python.org>
References: <mailman.676.1193831997.13605.python-list@python.org>
Message-ID: <1193843610.483723.121570@v3g2000hsg.googlegroups.com>

On Oct 31, 6:59 am, Neal Becker <ndbeck... at gmail.com> wrote:
> I'm just trying out pyparsing.  I get stack overflow on my first try.  Any
> help?
>
> #/usr/bin/python
>
> from pyparsing import Word, alphas, QuotedString, OneOrMore, delimitedList
>
> first_line = '[' + delimitedList (QuotedString) + ']'
>
> def main():
>     string = '''[ 'a', 'b', 'cdef']'''
>     greeting = first_line.parseString (string)
>     print greeting
>
> if __name__ == "__main__":
>     main()
>
> /usr/lib/python2.5/site-packages/pyparsing.py:2727: SyntaxWarning: Cannot
> add element of type <type 'type'> to ParserElement
>   return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
> /usr/lib/python2.5/site-packages/pyparsing.py:1008: SyntaxWarning: Cannot
> add element of type <type 'type'> to ParserElement
>   return other + self
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/tmp/python-k3AVeY.py", line 5, in <module>
>     first_line = '[' + delimitedList (QuotedString) + ']'
>   File "/usr/lib/python2.5/site-packages/pyparsing.py", line 2727, in
> delimitedList
>     return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
>   File "/usr/lib/python2.5/site-packages/pyparsing.py", line 1008, in
> __radd__
>     return other + self
>   File "/usr/lib/python2.5/site-packages/pyparsing.py", line 1008, in
> __radd__
>     return other + self

Oh!  You are so close!

QuotedString is a class.  delimitedList does not accept a class, but
an expression, which is usually created using instances of the
pyparsing classes.  quotedString is an expression, defining a pretty
complex quoted string syntax (single or double-quoted string).

Just change QuotedString to quotedString throughout your script, and
try again.

-- Paul



From emorfo at gmail.com  Mon Oct 29 10:04:39 2007
From: emorfo at gmail.com (emorfo at gmail.com)
Date: Mon, 29 Oct 2007 07:04:39 -0700
Subject: A class question
In-Reply-To: <mailman.573.1193658371.13605.python-list@python.org>
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<mailman.573.1193658371.13605.python-list@python.org>
Message-ID: <1193666679.216514.248300@o3g2000hsb.googlegroups.com>

On Oct 29, 12:46 pm, "Martin Marcher" <mar... at marcher.name> wrote:
> 2007/10/29, Hrvoje Niksic <hnik... at xemacs.org>:
>
> > Sbe unpx inyhr, urer vf n cbffvoyr vzcyrzragngvba:
> > ...
>
> was that on purpose?
>
> martin
>
> --http://noneisyours.marcher.namehttp://feeds.feedburner.com/NoneIsYours

for humans:


For hack value, here is a possible implementation:


import inspect


def _find(frame, obj):
    for name, value in frame.f_locals.iteritems():
        if value is obj:
            return name
    for name, value in frame.f_globals.iteritems():
        if value is obj:
            return name
    raise KeyError("Object not found in frame globals or locals")


class X:
    def debug(self):
        print ("Caller stores me in %s (among other possible places)"
               % _find(inspect.currentframe(1), self))



>>> xyzzy = X()
>>> xyzzy.debug()


Caller stores me in xyzzy (among other possible places)

>>> a = b = X()
>>> a.debug()


Caller stores me in a (among other possible places)

>>> b.debug()


Caller stores me in a (among other possible places)

>>> X().debug()


Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 4, in debug
  File "<stdin>", line 8, in _find
KeyError: 'Object not found in frame globals or locals'



From ggpolo at gmail.com  Sat Oct  6 08:22:30 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Sat, 6 Oct 2007 09:22:30 -0300
Subject: my Python lib is broken
In-Reply-To: <1191672177.389263.185790@g4g2000hsf.googlegroups.com>
References: <1191672177.389263.185790@g4g2000hsf.googlegroups.com>
Message-ID: <ac2200130710060522o1b135c7au2383d0231bf19b73@mail.gmail.com>

2007/10/6, Bruno Rezende <brunovianarezende at gmail.com>:
> Hi,
>
> I think I've broken my python installation (don't know how). All the
> packages that are under 'lib' in python installation doesn't work the
> way expected:
>
> >>> import xml
> >>> xml.dom
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'module' object has no attribute 'dom'
>

This is not broken. It is how packages works.
xml is a package, dom is a package inside xml. If you want to check
the attributes that you get importing xml you do dir(xml)

> but, if I import * from xml, it starts to work again:
>
> >>> from xml import *

Doing that will cause the __init__.py inside package xml to check its
__all__ list and import them all, including dom

> >>> xml.dom
> <module 'xml.dom' from 'C:\Python25\Lib\xml\dom\__init__.pyc'>
>
>
> Does someone know why is this happening? (I can reinstall my python
> 2.5, but would like to know how the python lib got broken).

This is hapenning because you have installed Python, congratulations =)

>
> regards,
> Bruno
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves


From algotother at gmail.com  Thu Oct 25 20:57:56 2007
From: algotother at gmail.com (algotother at gmail.com)
Date: Thu, 25 Oct 2007 17:57:56 -0700
Subject: Dual Python Installed Environments..
In-Reply-To: <mailman.462.1193348012.13605.python-list@python.org>
References: <mailman.462.1193348012.13605.python-list@python.org>
Message-ID: <1193360276.636614.108750@d55g2000hsg.googlegroups.com>

Gaia dhuit,

On Oct 25, 10:45 pm, "sam" <bedoug... at earthlink.net> dropped 2 cents
into the slot and wrote:
> Hi..

Well, hello

>
> I'm looking to install dual versions of python 2.3, 2.4 on the same box. I'm
> trying to figure out if there's something I'm missing, some kind of gotchas
> that I haven't seen.
>

I know what you mean - sometimes things are just *too easy* to believe
with Python.

This is one of those:
Just make sure you get the prefix right at installation time, and
Python takes care of the rest., the two installations will be kept as
separate as as the directories you choose.

> I'm also trying to figure out how to allow my script to determine which
> version to use???

Other things are more difficult: I cannot see how your script can
choose an interpreter before the script is running.#

OTOH one script could easily choose the correct interpreter for
another script, e.g.

#! /bin/bash

if $MOON_IS_BLUE
then
	~/python24/bin/python script.py
else
	/usr/bin/python script.py
fi

> Thanks

T? f?ilte romhat

--
jab

Gaia leat



From jeremit0 at gmail.com  Thu Oct 11 11:09:32 2007
From: jeremit0 at gmail.com (jeremito)
Date: Thu, 11 Oct 2007 15:09:32 -0000
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <5n6r5bFfp4a6U1@mid.uni-berlin.de>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
Message-ID: <1192115372.754998.270520@o80g2000hse.googlegroups.com>

On Oct 11, 10:43 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> jeremito wrote:
> > My Python script makes a bunch of images that I want to use as frames
> > in a movie.  I've tried searching for a module that will take these
> > images and put them together in a Quicktime or mpeg movie, but haven't
> > found anything.  My images are currently pdfs, but I could make them
> > into just about anything if needed.
>
> > Is there a module, or example of how to do this?
>
> http://pymedia.org/
>
> Diez

That initially looked promising, but it looks like nobody is working
on it anymore and it doesn't compile on Mac.  (I should have mentioned
I am using a Mac.)  Any other suggestions?

Thanks,
Jeremy



From danfolkes at gmail.com  Thu Oct 18 01:09:03 2007
From: danfolkes at gmail.com (danfolkes)
Date: Thu, 18 Oct 2007 05:09:03 -0000
Subject: Script to Download Ubuntu Gutsy ASAP
Message-ID: <1192684143.871518.316880@v23g2000prn.googlegroups.com>

I thought I would post the source to a program that I made that will
download the http://ubuntu.media.mit.edu/ubuntu-releases/gutsy/
as soon as its posted.

It checks the site every 10 min time.sleep(600)

This is mostly untested so I would appreciate comments, and if you use
it, post that too! :)
<code>

import time
import urllib

mysock = urllib.urlopen("http://ubuntu.media.mit.edu/ubuntu-releases/
gutsy/ubunt
u-7.10-desktop-i386.iso")
#print mysock
while 1:
    image = mysock.read()
    if image[0:1]!='<':
        oFile = open(r"image.iso",'wb')
        oFile.write(image)
        oFile.close
        break
        exit
    print "Wait ", time.localtime()
    time.sleep(600)


</code>

enjoy,
Daniel Folkes
danfolkes at gmail.com
http://danfolkes.com



From truthismidway at aim.com  Fri Oct 19 10:29:12 2007
From: truthismidway at aim.com (Sushant)
Date: Fri, 19 Oct 2007 10:29:12 -0400
Subject: dynamic invoke
In-Reply-To: <5nrkasFk00g7U1@mid.uni-berlin.de>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<1192793679.102637.274620@e9g2000prf.googlegroups.com>
	<5nrkasFk00g7U1@mid.uni-berlin.de>
Message-ID: <200710191029.13053.truthismidway@aim.com>

Python will not allow string to be used a function pointer. It is type unsafe. 
Best way is to convert string into function pointers manually.

if dynamicMethod == 'bar':
    method = oFoo->bar
else:
    method = oFoo->default
method()

On Friday 19 October 2007 7:56 am, Diez B. Roggisch wrote:
> Nils wrote:
> > On Oct 19, 12:39 pm, lukasz.... at gmail.com wrote:
> >> Hello,
> >>
> >> Is there any way (other then eval) to invoke a method by passing
> >> method name in a string.
> >> It's very simple in php:
> >> $oFoo = new Foo();
> >> $dynamiMethod = "bar";
> >> $oFoo->$dynamiMethod();
> >>
> >> Unfortunately I can't find a good solution to do the same thing in
> >> python. Does it have some build-in function to do it?
> >>
> >> Kind Regards,
> >>
> >> Lukasz.
> >
> >  Use apply():
> > http://docs.python.org/lib/non-essential-built-in-funcs.html
>
> Apply doesn't help the OP - it's useful if you already have a function
> pointer.
>
> And it's obsoleted by the * and ** parameter passing mechanism.
>
> Diez


From sjmachin at lexicon.net  Sun Oct  7 17:21:50 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 08 Oct 2007 07:21:50 +1000
Subject: Override 'and' and 'or'
In-Reply-To: <5msdvbFf5b87U2@mid.uni-berlin.de>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<13ghqmkl33t3ra4@corp.supernews.com>
	<1191768523.821775.178080@50g2000hsm.googlegroups.com>
	<1191771968.692976.318950@w3g2000hsg.googlegroups.com>
	<5msdvbFf5b87U2@mid.uni-berlin.de>
Message-ID: <47094df2@news.eftel.com.au>

On 8/10/2007 1:57 AM, Diez B. Roggisch wrote:
> Kay Schluehr schrieb:

>> You can see what "and" and "or" are actually doing:
>>
>> import dis
>> dis.dis(lambda: x or y and z)
>>
>>   1           0 LOAD_GLOBAL              0 (x)
>>               3 JUMP_IF_TRUE            11 (to 17)
>>               6 POP_TOP
>>               7 LOAD_GLOBAL              1 (y)
>>              10 JUMP_IF_FALSE            4 (to 17)
>>              13 POP_TOP
>>              14 LOAD_GLOBAL              2 (z)
>>         >>   17 RETURN_VALUE
>>
>> Here you can see nicely that they are not implemented as specialized
>> opcodes but being compiled to jumps. This causes their lazy nature. If
> 
> Very cool, didn't know that.
> 

<rant>

Not very cool at all IMHO, because:
1. There's no other way to avoid unnecessarily evaluating the second 
operand besides using jumps.
2. POP_TOP [used even in normal test & jump situations] is horrible, and 
there are long-known better ways of doing it:

E.g. "Recursive Descent Compiling", by A.J.T. Davie and R. Morrison 
[pub: Ellis Horwood, Chichester, 1981] says on page 146: "... jumptt 
branches if the top stack element is true and merely removes it 
otherwise. A similar sequence can be used for 'and' but with jumpff 
replacing jumptt."

C Python uses two JUMP_IF_bool[_NEVER_POP] instructions, followed in 
most cases by POP_TOP.

E.g.
 >>> dis.dis(lambda: tval if arg else fval)
   1           0 LOAD_GLOBAL              0 (arg)
               3 JUMP_IF_FALSE            7 (to 13)
               6 POP_TOP
               7 LOAD_GLOBAL              1 (tval)
              10 JUMP_FORWARD             4 (to 17)
         >>   13 POP_TOP
              14 LOAD_GLOBAL              2 (fval)
         >>   17 RETURN_VALUE
 >>>

IMHO 4 more jump instructions
     2 x JUMP_IF_bool_ALWAYS_POP (simple cases)
and 2 x JUMP_IF_bool_ELSE_POP (and/or)
would be very useful.

</rant>


From Andy.cheesman at bristol.ac.uk  Thu Oct 11 09:43:23 2007
From: Andy.cheesman at bristol.ac.uk (Andy Cheesman)
Date: Thu, 11 Oct 2007 14:43:23 +0100
Subject: matching a street address with regular expressions
In-Reply-To: <1192109138.907631.134890@r29g2000hsg.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>	<4704DD04.4020304@bigfoot.com>	<mailman.32.1192035770.927.python-list@python.org>	<1192044076.090824.133360@o3g2000hsb.googlegroups.com>
	<1192109138.907631.134890@r29g2000hsg.googlegroups.com>
Message-ID: <470E287B.7040708@bristol.ac.uk>

Check out kodos http://kodos.sourceforge.net/ for an interactive python
regexp tester

Andy

Goldfish wrote:
> Don't forget to write test cases. If you have a series of addresses,
> and confirm they are parsed correctly, you are in a good position to
> refine the pattern. You will instantly know if a change in pattern has
> broken another pattern.
> 
> The reason I'm saying this, is because I think your pattern is
> incomplete. I suggest you add a test case for the following street
> address:
> 
> 221B Baker Street
> 
> That is a real address in London (only Sherlock Holmes) was fiction. I
> know it, because I actually visited the location. Can you address
> matching pattern handle that? Just don't break other address
> recognition test cases while fixing things.
> 


From e0427417 at student.tuwien.ac.at  Sun Oct  7 18:17:25 2007
From: e0427417 at student.tuwien.ac.at (Mathias Panzenboeck)
Date: Mon, 08 Oct 2007 00:17:25 +0200
Subject: weakrefs and bound methods
In-Reply-To: <1i5m6gj.1henyed166y6yrN%aleax@mac.com>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<47090ee0$0$11610$3b214f66@tunews.univie.ac.at>
	<1i5m6gj.1henyed166y6yrN%aleax@mac.com>
Message-ID: <47095af7$0$11610$3b214f66@tunews.univie.ac.at>

Alex Martelli wrote:
> Mathias Panzenboeck <e0427417 at student.tuwien.ac.at> wrote:
> 
>> Marc 'BlackJack' Rintsch wrote:
>>> ``del b`` just deletes the name `b`.  It does not delete the object.
>>> There's still the name `_` bound to it in the interactive interpreter.
>>> `_` stays bound to the last non-`None` result in the interpreter.
>> Actually I have the opposite problem. The reference (to the bound method)
>> gets lost but it shouldn't!
> 
> weakrefs to bound methods require some subtlety, see
> <http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81253> (or what
> I believe is the better treatment of this recipe in the printed edition
> of the Python Cookbook -- of course, being the latter's editor, I'm
> biased;-).
> 
> 
> Alex

Thank you, that really helped. :)


	-panzi


From sajanjoseph at gmail.com  Tue Oct  9 01:18:57 2007
From: sajanjoseph at gmail.com (sajanjoseph at gmail.com)
Date: Mon, 08 Oct 2007 22:18:57 -0700
Subject: how to get rgbdata
Message-ID: <1191907137.432286.325710@o3g2000hsb.googlegroups.com>

Hi i am a newbie to python and PIL. can anyone tell me how to get
rgbdata from a jpeg image using PIL
as a double[] . is there an equiv method to java's
BufferedImage.getRGB(0,0,width,height,rgbdata,0,width) ?

if anyone can advise pls do
sj



From jzgoda at o2.usun.pl  Fri Oct 19 17:56:04 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Fri, 19 Oct 2007 23:56:04 +0200
Subject: DIAGNOSIS: Racism moves back to Denmark from South Africa
In-Reply-To: <LA8Si.12763$412.6551@weber.videotron.net>
References: <1192661865.485820.253030@v29g2000prd.googlegroups.com>
	<LA8Si.12763$412.6551@weber.videotron.net>
Message-ID: <ffb97j$27b$1@atlantis.news.tpi.pl>

mich napisa?(a):

>> INCISIVE ANALYSIS: The dismantlement of Apartheid Regime in South
>> Africa sent the racist Dutch Afrikaners back to Denmark where they are
>> spreading their racist ideology -- The Apartheid "Christianity" :
> 
> The Dutch went back to Denmark? 

Let them thank God they didn't sent Poles there. The rivers would flow
with blood. Leaving blood flowing is their well-known national sport.

-- 
Jarek Zgoda
http://jpa.berlios.de/


From schmidt_florian at gmx.de  Mon Oct  1 12:48:04 2007
From: schmidt_florian at gmx.de (Florian Schmidt)
Date: Mon, 1 Oct 2007 18:48:04 +0200
Subject: Program inefficiency?
In-Reply-To: <1191092726.433738.119840@w3g2000hsg.googlegroups.com>
References: <1191079347.192272.240540@22g2000hsm.googlegroups.com>
	<1191087234.915654.182370@k79g2000hse.googlegroups.com>
	<mailman.1284.1191088565.2658.python-list@python.org>
	<1191090293.017485.225470@y42g2000hsy.googlegroups.com>
	<1191090727.614819.292550@50g2000hsm.googlegroups.com>
	<1191092726.433738.119840@w3g2000hsg.googlegroups.com>
Message-ID: <20071001164804.GA12671@mail.gmx.de>

On Sat, Sep 29, 2007 at 12:05:26PM -0700, thebjorn wrote:
> Ok, if you want a single RE... How about:
>...
>   r = re.compile(r'''
>       (?:href=['"][^#]+[#]([^"']+)["'])
>     | (?:name=['"]?([^'">]+))
>   ''', re.IGNORECASE | re.MULTILINE | re.DOTALL | re.VERBOSE)

maybe a little bit easier to read with ungreedy operators:

r = re.compile(r'''
       (?:href=['"].+?[#](.+?)["'])
     | (?:name=['"]?(.+?)['">]))
''', re.IGNORECASE | re.MULTILINE | re.DOTALL | re.VERBOSE)

flo.



From fw3 at hotmail.co.jp  Tue Oct  2 18:01:27 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Tue, 2 Oct 2007 22:01:27 +0000
Subject: Where to put the import command in the file?
In-Reply-To: <Xns99BDBC7A6D0E0duncanbooth@127.0.0.1>
References: <Xns99BDA81BBC0CDduncanbooth@127.0.0.1>
	<mailman.1403.1191343982.2658.python-list@python.org> 
	<Xns99BDBC7A6D0E0duncanbooth@127.0.0.1>
Message-ID: <BLU107-W57AFE6872542072915C3BB4AE0@phx.gbl>


Hi,
 
I am writing Python script now. The project will grow bigger in future. I need to import some packages for several functions, such as numpy. Where is the best plalce to put the import numpy command? Is it fine to put on the first line in the file? Is it better to put it into each function after the def functionname? or they are the same. Since numpy function will be used in all files, so I have to import it in each files. Does this will increase the memory usuage or there are better way to do it.
 
thanks
 
Frank
_________________________________________________________________
???????????????????Hotmail Plus ??????????
http://get.live.com/mail/options
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071002/b4533e4d/attachment.html>

From siona at chiark.greenend.org.uk  Fri Oct 26 12:03:37 2007
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 26 Oct 2007 17:03:37 +0100 (BST)
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1193270861.900672.125650@e34g2000pro.googlegroups.com>
	<mailman.444.1193308343.13605.python-list@python.org>
	<1193321822.258787.55100@o3g2000hsb.googlegroups.com>
Message-ID: <f7i*2piYr@news.chiark.greenend.org.uk>

bramble  <cadet.bramble at gmail.com> wrote:
> [ GTK is ] free
>software, so contributors can try and make the L&F more native if it's
>really that big a deal.

But the people who care about Windows native L&F are not the people
with the resources (time, money, probably experience) to address
this issue. And the people who do probably don't care. If you're
developing an app where it matters, it's much easier to just go with
the option that gives the right L&F out of the box.

>One reason I'm not crazy about wx because I don't like the idea of
>adding yet another API layer into the mix. Wx seems quite large, and
>if issues arise, debugging a GUI that calls another GUI does not seem
>like a fun way to spend your time.

I used to maintain a couple of commercial wxPython apps which were
only ever meant to run on Windows, and the native L&F was the
primary driver behind the choice of wx. Because Linux is my
development platform of choice, I wound up trying to run them there
as well. For a supposedly cross-platform library, it required a lot
of porting effort. And, as you say, when things go wrong it's
difficult to know whether to lay it at the feet of wxPython, wx or
GTK. (And then bear in mind that GTK is layered on top of X....)

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
   "Frankly I have no feelings towards penguins one way or the other"
        -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 15 17:10:40 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 15 Oct 2007 23:10:40 +0200
Subject: First class lexical closures
In-Reply-To: <13h3c8qgq6gic3b@corp.supernews.com>
References: <13h3c8qgq6gic3b@corp.supernews.com>
Message-ID: <4713d788$0$28302$426a74cc@news.free.fr>

Jon Harrop a ?crit :
> Just debating somewhere else whether or not Python might be considered a
> functional programming language. Lua, Ruby and Perl all seem to provide
> first class lexical closures.


def makeadder(x):
   def add(y):
     return x+y
   return add


If that's what you mean, then it a common idiom in Python, yes. You may 
also want to look for 'function decoators' (some syntactic sugor for 
HOFs), and how to define your own callable types (which is just the OO 
equivalent to closures).


From paulgeeleher at gmail.com  Sat Oct 20 09:13:44 2007
From: paulgeeleher at gmail.com (sophie_newbie)
Date: Sat, 20 Oct 2007 06:13:44 -0700
Subject: Dealing with "funny" characters
Message-ID: <1192886024.889377.118300@e34g2000pro.googlegroups.com>

Hi, I want to store python text strings that characters like "?" "?"
in a mysql varchar text field. Now my problem is that mysql does not
seem to accept these characters. I'm wondering if there is any way I
can somehow "encode" these characters to appear as normal characters
and then "decode" them when I want to get them out of the database
again?

-Thanks.



From george.sakkis at gmail.com  Wed Oct  3 14:47:05 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 03 Oct 2007 18:47:05 -0000
Subject: Class design question
In-Reply-To: <1191436021.775375.324010@r29g2000hsg.googlegroups.com>
References: <mailman.1470.1191434194.2658.python-list@python.org>
	<1191436021.775375.324010@r29g2000hsg.googlegroups.com>
Message-ID: <1191437225.918592.193010@o80g2000hse.googlegroups.com>

On Oct 3, 2:27 pm, George Sakkis <george.sak... at gmail.com> wrote:
> On Oct 3, 1:04 pm, Adam Lanier <a... at krusty.madoff.com> wrote:
>
>
>
> > Relatively new to python development and I have a general question
> > regarding good class design.
>
> > Say I have a couple of classes:
>
> >         Class Foo:
> >             params = [ ]
> >             __init__( self, param ):
> >                 ...
>
> >         Class Bar:
> >             data = None
> >             __init__( self, data ):
> >                 ...
>
> > The class is going to be a wrapper around a list of Bars() (among other
> > things).  I want the ability to pass to the constructor of Foo either:
> >         a string                'baz'
> >         a Bar object            Bar( 'baz' )
> >         a list of strings and/or bars ( 'baz', Bar( 'something else' ))
>
> > Am I going to have to use isinstance() to test the parameter to __init__
> > to see what type of data I'm passing in, i.e.,
>
> >         Class Foo:
> >             params = [ ]
> >             __init__( self, param ):
> >                 if isinstance( param, list ):
> >                     for p in param:
> >                         addParam( p )
> >                 elif isinstance( param, str):
> >                     addParam( param )
>
> >             addParam( self, param ):
> >                 if isinstance( param, Bar ):
> >                         self.params.add( param )
> >                 elif isinstance( param, str ):
> >                         self.params.add( Bar( param ))
> >                 else:
> >                         raise TypeError( "wrong type of input" )
>
> > Am I missing something here or is there a more Pythonic way to
> > accomplish this?
>
> I would use variable argument list for this; it's also consistent with
> your example Foo( 'baz', Bar( 'something else' )), otherwise you need
> to call it as Foo([ 'baz', Bar( 'something else' ) ])
>
> # always inherit from object unless you have a good reason not to
> class Foo(object):
>
>     # XXX this is a class instance, shared by all Foo instances;
>     # XXX probably not what you intended
>     params = [ ]
>
>     def __init__(self, *args):
>         # uncomment the following line for instance-specific params
>         # self.params = []
>         for arg in args:
>             if not isinstance(arg, Bar):
>                # let the Bar constructor to do typechecking or whatnot
>                 arg = Bar(arg)
>             self.params.add(arg)
>
> HTH,
> George

Or even better (Python 2.5):

class Foo(object):
    def __init__(self, *args):
        self.params = [arg if isinstance(arg, Bar) else Bar(arg) for
arg in args]

George



From nagle at animats.com  Thu Oct  4 21:50:59 2007
From: nagle at animats.com (John Nagle)
Date: Fri, 05 Oct 2007 01:50:59 GMT
Subject: Python and SSL
In-Reply-To: <1191523844.528308.98180@y42g2000hsy.googlegroups.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
	<1191420037.564584.103300@50g2000hsm.googlegroups.com>
	<877im4xd0f.fsf@pobox.com>
	<1191523844.528308.98180@y42g2000hsy.googlegroups.com>
Message-ID: <7MgNi.55277$Um6.46091@newssvr12.news.prodigy.net>

Johny wrote:
> Martin and John,
> Thank you both for your replies
>  Must I  have OpenSSL imported in my Python program?
> So far I have been using only SSL  support.
> Built-in SSL support works OK if I connect from my Python program
> directly to SSL server ( but not via proxy).
> L.

     SSL isn't SUPPOSED to work through proxies.  That's the whole point of
SSL - to prevent somebody in the middle from tapping into the connection.
Look up "man in the middle attack".

					John Nagle


From narutocanada at gmail.com  Sat Oct 20 06:15:15 2007
From: narutocanada at gmail.com (narutocanada at gmail.com)
Date: Sat, 20 Oct 2007 03:15:15 -0700
Subject: what is the difference between the two kinds of brackets?
Message-ID: <1192875315.887877.210550@y27g2000pre.googlegroups.com>

hi

what is the difference between the two kinds of brackets?
I tried a few examples but I can't make out any real difference:
lst = [10, 20, 30]
print lst[0]
print lst[2]
print lst
lst = (10, 20, 30)
print lst[0]
print lst[2]
print lst

lst = [10, 20, 40, "string", 302.234]
print lst[0:2]
print lst[:3]
print lst[3:]
lst = (10, 20, 40, "string", 302.234)
print lst[0:2]
print lst[:3]
print lst[3:]

10
30
[10, 20, 30]
10
30
(10, 20, 30)
[10, 20]
[10, 20, 40]
['string', 302.23399999999998]
(10, 20)
(10, 20, 40)
('string', 302.23399999999998)

Are these two kinds of brackets mean the same thing in the "list"
context? Thanks.



From george.sakkis at gmail.com  Tue Oct 30 16:58:00 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Tue, 30 Oct 2007 20:58:00 -0000
Subject: A class question
In-Reply-To: <mailman.567.1193646908.13605.python-list@python.org>
References: <mailman.567.1193646908.13605.python-list@python.org>
Message-ID: <1193777880.018614.247900@k79g2000hse.googlegroups.com>

On Oct 28, 6:01 am, Donn Ingle <donn.in... at gmail.com> wrote:

> Is there a way I can, for debugging, access the instance variable name from
> within a class?

Shouldn't this be in a FAQ somewhere? It's the second time (at least!)
it comes up this week.

George



From stefan.behnel-n05pAM at web.de  Fri Oct 12 07:29:53 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Fri, 12 Oct 2007 13:29:53 +0200
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <470F5AB1.9090006@web.de>

Florian Lindner wrote:
> can I determine somehow if the iteration on a list of values is the last
> iteration?
> 
> Example:
> 
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
> 
> that would print
> 
> 1
> 2
> 9
> 
> 
> Can this be acomplished somehow?

You could do this:

  l = [1,2,3]
  s = len(l) - 1
  for i, item in enumerate(l): # Py 2.4
      if i == s:
          print item*item
      else:
          print item

Or, you could look one step ahead:

   l = [1,2,3]
   next = l[0]
   for item in l[1:]:
       print next
       next = item
   print next * next

Stefan


From kyosohma at gmail.com  Fri Oct 19 09:11:01 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 19 Oct 2007 13:11:01 -0000
Subject: Enso or Launchy like UI from Python
In-Reply-To: <mailman.204.1192783520.13605.python-list@python.org>
References: <mailman.204.1192783520.13605.python-list@python.org>
Message-ID: <1192799461.148726.46740@e34g2000pro.googlegroups.com>

On Oct 19, 3:45 am, zooey <macrovid... at naver.com> wrote:
> Hi there,
>
> I want to make transparent/launcher-like window application using python.
>
> (similar as Enso, Launchy, etc. I know Enso written in python.)
>
> Is there any open source project like it or any example?
>
> Thanks,
>
>   Aaron.
>
> --
> View this message in context:http://www.nabble.com/Enso-or-Launchy-like-UI-from-Python-tf4651810.h...
> Sent from the Python - python-list mailing list archive at Nabble.com.

I know wxPython has the ability to make any of its windows semi-
transparent or completely transparent and I would assume that the
other major Python GUI toolkits can do so as well.

All you'd really need to do is use glob.glob to get the shortcuts from
whatever directories you want and then do auto-complete when the user
tries to type a name. I think the subprocess module would probably be
your best bet for launching the applications.

Mike



From http  Thu Oct  4 05:47:27 2007
From: http (Paul Rubin)
Date: 04 Oct 2007 02:47:27 -0700
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<13g9d3nagotcab6@corp.supernews.com>
Message-ID: <7xtzp7xlcg.fsf@ruckus.brouhaha.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
> > implementation in pure Python).  Finally, arithmetic would become very
> > confusing if there were three distinct numeric types; it already causes
> > enough confusion with two!

There's already ints, longs, floats, complexes, and decimals.  What's
the problem with one more?


From christopher.pax at gmail.com  Mon Oct  1 08:30:09 2007
From: christopher.pax at gmail.com (Chris Pax)
Date: Mon, 01 Oct 2007 05:30:09 -0700
Subject: using inspect on pygtk
In-Reply-To: <1191031070.901842.71210@o80g2000hse.googlegroups.com>
References: <1191031070.901842.71210@o80g2000hse.googlegroups.com>
Message-ID: <1191241809.856756.53600@19g2000hsx.googlegroups.com>

On Sep 28, 9:57 pm, Chris Pax <christopher.... at gmail.com> wrote:
> Hello,
>
> I recently been trying to use the inspect module to inspect the
> arguments of gtk objects, such as gtk.Button. I tried like this:
>
> inspect.getargspec(gtk.Button.__init__)
>
> and get the fallowing error:
>
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib/python2.5/inspect.py", line 743, in getargspec
>     raise TypeError('arg is not a Python function')
> TypeError: arg is not a Python function
>
> I have been trying to do this through code so that I don't have to
> have a list of all possible gtk classes and their arguments.

does anybody have any idea?



From cokofreedom at gmail.com  Wed Oct 24 10:42:39 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Wed, 24 Oct 2007 14:42:39 -0000
Subject: Better writing in python
In-Reply-To: <1193235331.202744.226950@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193230962.271873.104900@v29g2000prd.googlegroups.com>
	<1193235331.202744.226950@q3g2000prf.googlegroups.com>
Message-ID: <1193236959.302628.244280@k35g2000prh.googlegroups.com>

On Oct 24, 4:15 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 24, 2:02 pm, kyoso... at gmail.com wrote:
>
>
>
> > On Oct 24, 7:09 am, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
>
> > > I'm just wondering, if I could write a in a "better" way this code
>
> > > lMandatory = []
> > > lOptional = []
> > > for arg in cls.dArguments:
> > >   if arg is True:
> > >     lMandatory.append(arg)
> > >   else:
> > >     lOptional.append(arg)
> > > return (lMandatory, lOptional)
>
> > > I think there is a better way, but I can't see how...
>
> > You might look into list comprehensions. You could probably do this
> > with two of them:
>
> > <code>
> > # completely untested
> > lMandatory = [arg for arg in cls.dArguments if arg is True]
> > lOptional  = [arg for arg in cls.dArguments if arg is False]
> > </code>
>
> > Something like that. I'm not the best with list comprehensions, so I
> > may have the syntax just slightly off.
>
> Your list comprehensions are right, but 'arg is True' and 'arg is
> False' are better written as 'arg' and 'not arg' respectively.
>
> --
> Paul Hankin

Anyone know why towards arg is True and arg is False, arg is None is
faster than arg == None ...



From garywlee at gmail.com  Mon Oct  8 21:45:19 2007
From: garywlee at gmail.com (GaryLee)
Date: Mon, 08 Oct 2007 18:45:19 -0700
Subject: Adding extra modules to a Pyinstaller build
In-Reply-To: <1191860199.974594.90450@19g2000hsx.googlegroups.com>
References: <1191860199.974594.90450@19g2000hsx.googlegroups.com>
Message-ID: <1191894319.078801.21820@57g2000hsv.googlegroups.com>

> I need to add several Python standard modules to a Pyinstaller
> project. The modules are not (and cannot be) explicitly imported in my
> project script, so is there a way to add them to my .spec file in
> order to allow Pyinstaller to search for them in PYTHONPATH and add
> them to the project?

Have you read the "Listing Hidden Imports" section in the PyInstaller
document?
Check this out.
http://pyinstaller.hpcf.upr.edu/docs/Manual_v1.1.html#listing-hidden-imports

Regards,
Gary



From cai.haibin at gmail.com  Wed Oct 24 01:31:29 2007
From: cai.haibin at gmail.com (james_027)
Date: Wed, 24 Oct 2007 05:31:29 -0000
Subject: transforming list
In-Reply-To: <1193202851.104187.267820@q5g2000prf.googlegroups.com>
References: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
	<1193202851.104187.267820@q5g2000prf.googlegroups.com>
Message-ID: <1193203889.760945.293900@q3g2000prf.googlegroups.com>

hi,

On Oct 24, 1:14 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> On Oct 23, 9:46?pm, james_027 <cai.hai... at gmail.com> wrote:> hi,
>
> > i have a list from a resultset like this
> > 1,"Chicago Bulls",,,""
> > 2,"Cleveland Caveliers",,,""
>
>    ^                     ^^^ ^
>    |                     ||| |
>    1                     234 5
>
> How come these records have 5 fields...
>
> > 4,"Detroit Pistons",1,"23686386.35"
>
>    ^                 ^ ^            ^
>    |                 | |            |
>    1                 2 3            4
>
> ...whereas these only have 4 fields?
>

sorry, it's a typo error... there are only 4 fields.

thanks



From arkanes at gmail.com  Fri Oct  5 13:54:07 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Fri, 5 Oct 2007 12:54:07 -0500
Subject: Starting a thread before wxPython bootup ... interesting.
In-Reply-To: <1191605770.166713.284950@22g2000hsm.googlegroups.com>
References: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
	<13gb3284gqn0j6b@corp.supernews.com>
	<1191605770.166713.284950@22g2000hsm.googlegroups.com>
Message-ID: <4866bea60710051054y6fe56e12n34de610f186b6a16@mail.gmail.com>

On 10/5/07, Shafik <shafik23 at gmail.com> wrote:
> My apologies for not supplying more info, I am at work and I am
> technically not allowed to surf the web for anything.
>
> I am using Python 2.5.1,  the latest wx version (2.8.xx, I dont recall
> exactly). This is running under windows XP under the latest version of
> cygwin (that could be the source of the issues too).
>
> I was just looking for a general way to approach wx and
> multithreading, not a detailed solution to my problem. There are lots
> of tutorials online that describe how to perform a time-consuming task
> in a separate thread in a wx-gui, but nothing that describes any other
> use cases.
>

The general way to approach wx and multithreading is to just do it. In
the general case, the only caveat you need to be aware of is that wx
is not threadsafe and all GUI calls need to called from the main
thread.

> The real goal is to start the gui in a different thread, and have the
> main thread regain control. That seems like a feasible thing to be
> able to do, though I have been unsuccessful ... if anyone would like
> to suggest something without being covertly insulting, I'm all ears.
>

If you're not going to say what you did and how it didn't work, I
don't know how you expect anyone to help you.


From lew at lewscanon.com  Mon Oct 22 09:07:37 2007
From: lew at lewscanon.com (Lew)
Date: Mon, 22 Oct 2007 09:07:37 -0400
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <1193057430.359962.68820@v29g2000prd.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
Message-ID: <COednczU5fsEPYHanZ2dnUVZ_oTinZ2d@comcast.com>

Xah Lee wrote:
> i have written ... No coherent argument, 

-- 
Lew


From debajit1 at gmail.com  Wed Oct 17 16:27:14 2007
From: debajit1 at gmail.com (Debajit Adhikary)
Date: Wed, 17 Oct 2007 20:27:14 -0000
Subject: Appending a list's elements to another list using a list comprehension
Message-ID: <1192652834.150718.205050@t8g2000prg.googlegroups.com>

I have two lists:

a = [1, 2, 3]
b = [4, 5, 6]

What I'd like to do is append all of the elements of b at the end of
a, so that a looks like:

a = [1, 2, 3, 4, 5, 6]

I can do this using

map(a.append, b)

How do I do this using a list comprehension?

(In general, is using a list comprehension preferable (or more
"pythonic") as opposed to using map / filter etc.?)



From carsten at uniqsys.com  Thu Oct 11 07:51:39 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Thu, 11 Oct 2007 07:51:39 -0400
Subject: Problems with struct.pack()
In-Reply-To: <496954360710102019t25fe9f10p5cf9295212b0c433@mail.gmail.com>
References: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>
	<1192063855.3385.30.camel@localhost.localdomain>
	<496954360710102019t25fe9f10p5cf9295212b0c433@mail.gmail.com>
Message-ID: <20071011114028.M98089@uniqsys.com>

On Wed, 10 Oct 2007 22:19:49 -0500, Robert Dailey wrote 
> Hi, 
> 
> Thanks for responding. I apologize about my lack of details, I was in a
hurry when I wrote the initial question. I'll provide more details. 
> 
> Basically, I'm attempting to write out unicode strings (16 bits per
character) to a file. Before each string, I write out 4 bytes containing the
number of characters (NOT BYTES) the string contains. I suppose the confusion
comes in because I'm writing out both text information AND binary data at the
same time. I suppose the consistent thing to do would be to write out the
strings as binary instead of as text? I'm originally a C++ programmer and I'm
still learning Python, so figuring out this problem is a little difficult for me. 
> 
> In my initial inquiry, I was writing out 5000 as an example, however this
number would realistically be the number of characters in the string: len(
u"Hello World" ). Once I write out these 4 bytes, I then write out the string
"Hello World" immediately after the 4 bytes. You may be wondering why the
crazy file format. The reason is because this python script is writing out
data that will later be read in by a C++ application. 
> 
> The following works fine for ASCII strings: 
> 
> mystring = "Hello World" 
> file = open( "somefile.txt", "wb" ) 
> file.write( struct.pack ( "I", len(mystring) ) ) 
> file.write( mystring ) 
> 
> Again I do apologize for the lack of detail. If I've still been unclear
please don't hesitate to ask for more details.

This is much clearer, and it explains why you need to mix arbitrary binary
data with unicode text. Because of this mixing, as you have surmised, you're
going to have to treat the file as a binary file in Python. In other words,
don't open the file with the codecs module and do the encoding yourself, like so:

mystring = u"Hello World" 
file = open( "somefile.txt", "wb" ) 
file.write( struct.pack ( "I", len(mystring) ) ) 
file.write( mystring.encode("utf-16-le") )

(Note that I've guessed that you want little-endian byte-order in the
encoding. Without that indication, encode() would put a byte order mark at the
beginning of the string, which you probably don't want.)

Hope this helps,

Carsten.



From DustanGroups at gmail.com  Mon Oct 22 07:06:04 2007
From: DustanGroups at gmail.com (Dustan)
Date: Mon, 22 Oct 2007 11:06:04 -0000
Subject: calling a function from string
In-Reply-To: <mailman.312.1193046111.13605.python-list@python.org>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
	<mailman.312.1193046111.13605.python-list@python.org>
Message-ID: <1193051164.911979.250170@z24g2000prh.googlegroups.com>

On Oct 22, 4:41 am, "Francesco Guerrieri" <f.guerri... at gmail.com>
wrote:
> On 10/22/07, james_027 <cai.hai... at gmail.com> wrote:
>
> > hi,
>
> > i have a function that I could like to call, but to make it more
> > dynamic I am constructing a string first that could equivalent to the
> > name of the function I wish to call. how could I do that? the string
> > could might include name of the module.
>
> > for example
>
> > a_string = 'datetime.' + 'today()'
>
> > how could I call a_string as function?
>
> you could use getattr:
>
> function_name = 'time'  # this is a string
> module_name = 'time'   # this is a string, too
>
> my_function = getattr(module_name, function_name) # this is the
> function object,
> # equivalent to my_function = time.time


Not quite.

============================================
>>> function_name = 'time'  # this is a string
>>> module_name = 'time'   # this is a string, too
>>> my_function = getattr(module_name, function_name)
Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    my_function = getattr(module_name, function_name)
AttributeError: 'str' object has no attribute 'time'
============================================

It's actually equivalent to:

============================================
>>> "time".time
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    "time".time
AttributeError: 'str' object has no attribute 'time'
============================================



From danmcleran at yahoo.com  Wed Oct 10 15:25:03 2007
From: danmcleran at yahoo.com (danmcleran at yahoo.com)
Date: Wed, 10 Oct 2007 12:25:03 -0700
Subject: Plugins / Modularity
In-Reply-To: <1192041808.055507.167810@57g2000hsv.googlegroups.com>
References: <1192041012.099313.282600@d55g2000hsg.googlegroups.com>
	<1192041527.105596.305280@o80g2000hse.googlegroups.com>
	<1192041808.055507.167810@57g2000hsv.googlegroups.com>
Message-ID: <1192044303.408108.123280@r29g2000hsg.googlegroups.com>

On Oct 10, 12:43 pm, Robin K?veland <kaavel... at gmail.com> wrote:
> On Oct 10, 8:38 pm, "danmcle... at yahoo.com" <danmcle... at yahoo.com>
> wrote:
>
>
>
> > On Oct 10, 12:30 pm, Robin K?veland <kaavel... at gmail.com> wrote:
>
> > > Hi there. I'm basically in the process of writing my first substantial
> > > application in Python, and I've made a couple of (I'd like to say)
> > > design decisions so it won't just be a jumble. So, I've divided my
> > > program into three sub-packages, core, plugins and utilities.
>
> > > The core will be needed for the program to be run, but I've put it in
> > > a package by itself to make things more tidy.
> > > The utilities will be things that are handy to have (I'm thinking
> > > packages written by others that will make my work easier), but aren't
> > > necessary for the program to run. I'm not sure if this is needed yet,
> > > but I want to have the option in case it turns out to be useful.
>
> > > The plugins will basically be a package with modules adding
> > > functionality to the program, so to make it more extensible, and let
> > > others have a very simple way of extending the functionality without
> > > having to read a lot of source code and documentation. Adding a plugin
> > > should be really simple, preferrably you shouldn't have to modify any
> > > existing source, just put a .py file into the directory. This is where
> > > I'm sort of stuck. Does anyone know a way I can achieve this?
>
> > > This poses a couple of challenges for me, given the structure of my
> > > project and that I have no clue about how to do it. I'm thinking here
> > > that every plugin will have a main callable, which will recieve a
> > > Request object which can be queried for information, and an Action
> > > object which can be used to affect the state of the program to some
> > > degree. These will ideally be very simple (And for the moment, they
> > > obviously are).
>
> > > What I want, is a moment to 'contact' every module in the plugins
> > > package, and send these two objects to it's main callable. I also want
> > > to add a way for the program to load and reload plugin modules on the
> > > fly, so I can modify them without having to shut it down.
>
> > > Does anyone have some links for me? Alternatively any ideas?
>
> > > Thanks in advance.
>
> > I've just completed the initial launch basically this kind of software
> > framework. They way I did it was to parse xml files and load modules
> > and classes dynamically. After instantiating the classes, I call a
> > certain method that I expect to be present so that each class can
> > register any functionality it provides with a central registry within
> > the system. Overall, I've been very pleased with the way it turned
> > out. It's very easy to add functionality to the system, you simply add
> > an xml file along with some Python modules and you don't need to
> > change any existing code. I can provide some examples for you if you
> > like. Here's a little snippet from a Python script that loads modules
> > and classes:
>
> > def loadModule(moduleName):
> >     """
> >     Loads modules from within nested packages
> >     Reload ensures Python code is re-compiled.
> >     """
> >     mod        = __import__(moduleName)
> >     components = moduleName.split('.')
>
> >     for component in components[1:]:
> >         mod = getattr(mod, component)
> >         mod = reload(mod)
>
> >     return mod
>
> > def loadClass(moduleName, className):
> >     """
> >     Load a class from a module.
> >     Note: This does not create a class instance, it only loads the
> > code.
> >     """
> >     module = loadModule(moduleName = moduleName)
> >     c      = getattr(module, className)
>
> >     return c
>
> > You can try this out by passing in a string with with module and/or
> > class path and see that the module and/or class. Note that loadClass
> > does not create a class instance, so you'll have to instantiate it if
> > you want to, like this:
>
> > o = loadClass(modulePath,className)() #instantiates class that was
> > loaded dynamically
>
> Ah, fantastic! I didn't know about __import__, this is basically
> exactly what I need. I think I will manage, thanks a lot!

No problem, good luck.



From bdesth.quelquechose at free.quelquepart.fr  Mon Oct  8 07:25:35 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 08 Oct 2007 13:25:35 +0200
Subject: Declarative properties
In-Reply-To: <mailman.142.1192215368.927.python-list@python.org>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>	<5n6j5nFghr61U4@mid.uni-berlin.de>	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>	<5n6np4Fghr61U6@mid.uni-berlin.de>	<mailman.99.1192124809.927.python-list@python.org>	<470f2522$0$12106$426a74cc@news.free.fr>
	<mailman.142.1192215368.927.python-list@python.org>
Message-ID: <47111ecd$0$11270$426a74cc@news.free.fr>

Dan Stromberg a ?crit :
> On Fri, 12 Oct 2007 09:42:28 +0200, Bruno Desthuilliers wrote:
> 
> 
>>>>So what?  Otherwise you carry *always* the baggage of a public
>>>>property and a private attribute whether you need this or not.  At
>>>>least for me it would be unnecessary in most cases.
>>>
>>>That "baggage" of carrying around "unneeded" methods is something the
>>>computer carries for you - IE, no big deal in 99.99% of all cases.
>>
>>1/ Accessing the value of a property is not free. Accessing a plain
>>attribute is much cheaper.
> 
> 
> Python's current performance characteristics have no bearing on what is
> good software engineering practice in general, 

Neither useless complexity nor tryig to apply inappropriate idioms are 
good practices.

(snip)

> I'm not omniscient, and neither is anyone else; when one initially codes a
> class, one doesn't know to what purposes it will need to be bent in the
> future; using accessor methods instead of exposed attributes is
> significantly more flexible for the future of your class.

Please remember that Python has support for computed attributes (you do 
know what's a computed attribute, don't you ?), so you can turn a plain 
attribute into a computed one at any time without breakink the API. IOW, 
you don't need getters/setter a priori.


From deets at nospam.web.de  Mon Oct 22 04:23:13 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 22 Oct 2007 10:23:13 +0200
Subject: package import question
References: <1193040634.402343.127660@y27g2000pre.googlegroups.com>
Message-ID: <5o34vhFkiv5sU2@mid.uni-berlin.de>

Phoe6 wrote:

> Hi all,
> I have the following directory structure:
> 
> wallpaper/
>               -main.py
>               -ng/
>                  -- __init__.py
>                  -- setdesktop.py
>               -yb/
>                  -- __init__.py
>                  -- setdesktop.py
> 
>>From main.py, I would like to do:
> import ng
> import yb
> ng.setdesktop.run()
> yb.setdesktop.run()
> 
> But it is not working! when I import the package, the modules present
> inside the package are getting imported.
> 
> However, following the python document if I do
> import ng.setdesktop
> import yb.setdesktop
> 
> ng.setdesktop.run()
> yb.setdesktop.run()
> Works fine.
> 
> I would like to use the notation.
> import <my_package_name>
> and use the modules inside the package in the dotted module notation.
> What should I do the enable such a kind of imports.
> 
> Please let me know.

You need to import the setdesktop-module in the respective __init__.py-files
to make them part of the names known in there.

Diez


From timx at nospam.dev.null  Thu Oct  4 05:19:27 2007
From: timx at nospam.dev.null (Tim X)
Date: Thu, 04 Oct 2007 19:19:27 +1000
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
	<fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
Message-ID: <87ir5n2q5c.fsf@lion.rapttech.com.au>

George Neuner <gneuner2/@comcast.net> writes:

> On Wed, 3 Oct 2007 09:36:40 +0000 (UTC), bcd at pvv.ntnu.no (Bent C
> Dalager) wrote:
>
>>In article <85ve9ov971.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>>>bcd at pvv.ntnu.no (Bent C Dalager) writes:
>>>
>>>> In article <fdtsfu$iq6$03$1 at news.t-online.com>,
>>>> Frank Goenninger  <frgo at goenninger.net> wrote:
>>>>>
>>>>>Well, I didn't start the discussion. So you should ask the OP about the 
>>>>>why. I jumped in when I came across the so often mentioned "hey, it's 
>>>>>all well defined" statement was brought in. I simply said that if that 
>>>>>"well-definedness" is against "common understanding" then I don't give 
>>>>>a damn about that clever definitions. Because I have to know that there 
>>>>>are such definitions - always also knowing that free is not really 
>>>>>free.
>>>>
>>>> "Liberated" is a valid meaning of the word "free".
>>>
>>>No.  It is a valid meaning of the word "freed".
>>
>>Only if you're being exceedingly pedantic and probably not even
>>then. Webster 1913 lists, among other meanings,
>>
>>Free
>>(...)
>>"Liberated, by arriving at a certain age, from the control
>>of parents, guardian, or master."
>>
>>The point presumably being that having been "liberated", you are now
>>"free".
>
> I don't think knowing the meaning of a word is being pedantic.
> "Freed" is derived from "free" but has a different, though associated,
> meaning.  Words have meaning despite the many attempts by Generation X
> to assert otherwise.  Symbolism over substance has become the mantra
> of the young.
>
> The English language has degenerated significantly in the last 30
> years.  People (marketers in particular) routinely coin ridiculous new
> words and hope they will catch on.  I remember seeing a documentary
> (circa 1990?) about changes in the English language.  One part of the
> program was about the BBC news and one of its editors, whom the staff
> called the "protector of language", who checked the pronunciation of
> words by the news anchors.  The thing that struck me about this story
> was the number of BBC newspeople who publicly admitted that they could
> hardly wait for this man to retire so they could write and speak the
> way they wanted rather than having to be "correct".
>
> Dictionaries used to be the arbiters of the language - any word or
> meaning of a word not found in the dictionary was considered a
> colloquial (slang) use.  Since the 1980's, an entry in the dictionary
> has become little more than evidence of popularity as the major
> dictionaries (OED, Webster, Cambridge, etc.) will now consider any
> word they can find used in print.
>

Language is not a static 'set in stone' thing. It changes and while some
may find the changes unwelcome, it will change anyway. Although I have no
evidence to support it, I suspect that 'free' wold have been more commonly
associated with meanings other than 'free of cost' pre-capitalism. Checking
a few dictionaries seems to indicate that its meaning along the lines of
free from restriction, control, freedom, liberated etc is more in keeping
with its origins than an interpretation of free of cost and that even in
that context, it meant free from the restriction of having to be paid for.

The bottom line is that free has different meanings and if a group decides
to use that term and at the same time specify which context it means it to
apply, then I think that is reasonable. Ask your wife what she thinks is
meant by a free variable and she may say that it is a variable that has no
cost (as in free beer), This doesn't mean that its use is wrong or
incorrect.

I once asked RMS why he chose free, given the ambiguity it would cause,
over alternatives, such as freedom, liberated or even unrestricted. His
response was that at the time, free as in freedom was the concious
association they had and other associations and resulting ambiguity did not
occur to them until it was too late. This seems reasonable enough. If your
focus was to ensure that software was free from what you perceived to be
restrictions that would ultimately reduce your individual freedom, then
free fits. The fact this has led to confusion amongst consumers in a
capitalist based economy probably says as much about modern values and the
changing balance between consumerism compared to freedom than anything
else. 

Tim

"The Americans are identical to the British in all respects except, of
course, language."  Oscar Wilde

Giving English to an American is like giving sex to a child.  He knows it's
important but he doesn't know what to do with it. Adam Cooper (19th
century)

"We (the British and Americans) are two countries separated by a common
language.  G.B. Shaw

The Englishman commented to the American about the "curious"
way in which he pronounced so many words, such as schedule
(pronounced shedule). The American thought about it for a few
moments, then replied, "Perhaps it's because we went to
different shools!"

Englishman: Its maths not math because it is short for mathematics
American:   Then you would say "Maths are fun"?

---
tcross (at) rapttech dot com dot au


From python.comp.lang.id982 at vbgunz.com  Mon Oct 15 02:11:27 2007
From: python.comp.lang.id982 at vbgunz.com (Victor B. Gonzalez)
Date: Mon, 15 Oct 2007 02:11:27 -0400
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
Message-ID: <200710150211.27668.python.comp.lang.id982@vbgunz.com>

On Sunday 14 October 2007 5:06:19 pm Dmitri O.Kondratiev wrote:
> The function I wrote (below) reverses lists all right:
>
> def reverse(xs):
>     if xs == []:
>         return []
>     else:
>         return (reverse (xs[1:])) + [xs[0]]
>
> >>> reverse ([1,2,3])
>
> [3, 2, 1]
>
> Yet when I try to reverse a string I  get:
> >>> reverse ("abc")
>
> ...
> ...
> ...
>
>   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
>     return (reverse (xs[1:])) + [xs[0]]
>
>   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
>     return (reverse (xs[1:])) + [xs[0]]
>
>   File "C:\wks\python-wks\reverse.py", line 2, in reverse
>
>     if xs == []:
>
> RuntimeError: maximum recursion depth exceeded in cmp
>
>
>
> What's wrong? Why recursion never stops?
>
> Thanks,
> Dima


I didn't try anything but it looks like your calling your function in your 
else block like this (e.g., reverse('bc')) everytime. your else block isn't 
really ending itself, just repeating itself.

I could be wrong but from a quick glance you'll need to end it for sure when 
dealing with recursion.

maybe also trying to reverse using the iterator function reversed() or this 
shortcut may help e.g, 'abc'[::-1] -> 'cba'.

good luck!

-- 
Best Regards
Victor B. Gonzalez


From matt at tplus1.com  Fri Oct 26 13:23:00 2007
From: matt at tplus1.com (Matthew Wilson)
Date: Fri, 26 Oct 2007 17:23:00 GMT
Subject: python logging config file doesn't allow filters?
Message-ID: <slrnfi48jl.dft.matt@coleridge.tplus1.com>

The python logging module is a beautiful masterpiece.  I'm studying
filters and the config-file approach.  Is it possible to define a filter
somehow and then refer to it in my config file?

TIA

Matt


From lew at lewscanon.com  Wed Oct  3 17:07:18 2007
From: lew at lewscanon.com (Lew)
Date: Wed, 03 Oct 2007 17:07:18 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fe0q7a$e42$1@orkan.itea.ntnu.no>
References: <13frd6vtarbee75@corp.supernews.com>
	<85sl4sqckf.fsf@lola.goethe.zz> <fe0npc$cvq$1@orkan.itea.ntnu.no>
	<85hcl8qaj7.fsf@lola.goethe.zz> <fe0q7a$e42$1@orkan.itea.ntnu.no>
Message-ID: <rPudneeXHZYbmZnanZ2dnUVZ_qjinZ2d@comcast.com>

Bent C Dalager wrote:
> In article <85hcl8qaj7.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>> bcd at pvv.ntnu.no (Bent C Dalager) writes:
>>
>>> I have never claimed equivalence. What I have made claims about are
>>> the properties of one of the meanings of a word. Specifically, my
>>> claim is that "free" is a reasonable description of some one or some
>>> thing that has been "liberated".
>> But it suggests that the natural state would be the unfree state.
> 
> Would this be a good thing? Would it be a bad thing? What is your
> point?

"There's no easy way to be free."

"The price of freedom is eternal vigilance."

Freedom is not natural.  It must be defended.

-- 
Lew


From heikki at osafoundation.org  Thu Oct 11 00:41:08 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Wed, 10 Oct 2007 21:41:08 -0700
Subject: ANN: Chandler 0.7.1
Message-ID: <D4ydnfSq5-H5NJDanZ2dnUVZ_sednZ2d@comcast.com>

The Chandler Project is pleased to announce the 0.7.1 release of
Chandler Desktop!

Chandler Desktop is an open source, standards-based personal information
manager (PIM) built around small group collaboration and a core set of
information management workflows modeled on Inbox usage patterns and
David Allen's GTD methodology.

Download link, information on mailinglists, and how to get the sources
are available from the homepage:

  http://chandlerproject.org/

The 0.7.1 release is the first in a series of quick, time-based releases
since Chandler Preview 0.7.0.1 intended to respond to the feedback we
received from 0.7.0.1 and continue to receive from these quick releases.

0.7.1 fixes over 30 bugs, including:

Bug #8981 Bug in Twisted IMAP Capabilities Parsing
Bug #9454 (Partial fix) Memory leaks in SSL code
Bug #9920 AttributeError: 'pem' while syncing with
https://hub.chandlerproject.org
Bug #10308 Test sharing settings when there is an SSL error times out on
first try
Bug #10309 Canceling account creation still leaves password filled in
Bug #10514 Changing triage status on newly created task crashes Chandler
Bug #10543 Attribute Error dropping .eml into Chandler (AttributeError:
'tuple' object has no attribute 'itsItem')
Bug #10702 changing back from "all day" event (recurring) puts event at
midnight
Bug #10726 (Partial fix) --undo command line arg change
Bug #10728 Send button doesn't change to update on adding an email
address to the To field
Bug #10788 Old DONE Message item popping back into NOW section
Bug #10790 Unstamping taskness from an occurrence while another Chandler
makes a change to same occurrence results in server error
Bug #10794 Update root certificates
Bug #10815 Subscribe error when no rrules or rrdates
Bug #10817 invalid index in wxListBox::SetString on deleting the
outgoing mail account in debug
Bug #10821 iCal (private) import from Google calendar locks up in the
same place each try.
Bug #10824 Don't prepopulate reload dialog with a non-existent file,
it's annoying
Bug #10828 Work with Mac OSX 10.4 IMAP Server
Bug #10829 Allow self-signed certificates (but show warning dialog)
Bug #10853 Search doesn't find matching notes
Bug #10855 Traceback when publishing to Oracle Server
Bug #10881 Orphans should have their icalUID deleted
Bug #10882 Export of chex should dump masters before occurrences
Bug #10913 AttributeError: 'NoneType' object has no attribute 'status'
when resubmitting an HTTP request
Bug #10941 SSL certificate errors should not be hijacked by the generic
sharing error dialog

Thanks for your interest in Chandler Desktop!

-- 
  Heikki Toivonen


From ptmcg at austin.rr.com  Tue Oct 16 09:15:12 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 16 Oct 2007 06:15:12 -0700
Subject: Newbi Q: What is a rational for strings not being lists in Python?
In-Reply-To: <mailman.35.1192478621.13605.python-list@python.org>
References: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>
	<mailman.35.1192478621.13605.python-list@python.org>
Message-ID: <1192540512.575888.178000@e34g2000pro.googlegroups.com>

On Oct 15, 3:03 pm, "Matt McCredie" <mccre... at gmail.com> wrote:
> So, the best way to get the posted
> code to work [...] is to cast the input parameter to a list first.

<snip>

> >>> s = "I am a string"
> >>> x = list(s)
> >>> x
>
> ['I', ' ', 'a', 'm', ' ', 'a', ' ', 's', 't', 'r', 'i', 'n', 'g']
>>> "".join(x)
>
> 'I am a string'

Pardon my nit-picking, but the line "x = list(s)" is not casting
anything.  It is constructing a new list from the iterable s.

Even if s is a list, you get back a new list with the same elements:

Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
(Intel)] on win32
>>> lst = list("ABCDEF")
>>> id(lst)
12249928
>>> id(list(lst))
12250088

(This was a surprise to me too - I thought list(listVar) just returned
back the original listVar.)

-- Paul



From wesbrooks at gmail.com  Tue Oct  2 07:49:38 2007
From: wesbrooks at gmail.com (Wesley Brooks)
Date: Tue, 2 Oct 2007 12:49:38 +0100
Subject: readline() - problem
In-Reply-To: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
References: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
Message-ID: <eec9f8ee0710020449h2787d5e8v433c2fe310df7f41@mail.gmail.com>

Given a file:

#### t.txt  ####
1 2
1 1
3 1
### end of file ###

file = open('t.txt', 'r')
for i, line in enumerate(file):
    print "Line:", i, "Text:", line

would give the result:

Line: 0 Text: 1 2
Line: 1 Text: 1 1
Line: 2 Text: 3 1

To check the third character in each line:

for line in file:
    if (line != '') and (len(line) > 2):
         if line[2] == '1':
             print "Got line:", line

Would give:

Got line: 1 1
Got line: 3 1

Cheers,

Wesley Brooks

On 02/10/2007, piotr at kolodziejczyk.waw.pl <piotr at kolodziejczyk.waw.pl> wrote:
> Hi!
> I'm a new user of python, and have problem.
> I have a plain ascii file:
> 1aaaaaaaaaaaa1......1
> 1cccccccccccc2......1
> 1xxxxxxxxxxxx1......1
> I want to create a new file which contains only lines with '1' on 15th
> position.
> I've tried this:
>
> import string
> f=open('/test/test.asc','r')
> o=open('/test/out.asc','w')
> for line in f:
>     s= f.readline()
>     if s[15]=='1' :
>        o.write(s)
> o.close()
> f.close()
>
> Why it doesn't work ('s' contains ' ' )?
>
> piotr
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From angrybaldguy at gmail.com  Sun Oct 21 18:50:58 2007
From: angrybaldguy at gmail.com (Owen Jacobson)
Date: Sun, 21 Oct 2007 15:50:58 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <f6KdnYc5tvQwU4banZ2dnUVZ_gudnZ2d@comcast.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
	<471b64b2$0$90272$14726298@news.sunsite.dk>
	<1192980705.698811.128060@i38g2000prf.googlegroups.com>
	<PYqdnQWoU7yl6YbanZ2dnUVZ_qOknZ2d@comcast.com>
	<1192998506.251127.172530@v29g2000prd.googlegroups.com>
	<f6KdnYc5tvQwU4banZ2dnUVZ_gudnZ2d@comcast.com>
Message-ID: <1193007058.180051.137000@t8g2000prg.googlegroups.com>

On Oct 21, 3:11 pm, Lew <l... at lewscanon.com> wrote:

> Try using reason, logic and evidence for your points instead of merely
> shouting obscenities, hm?

You're expecting logic from someone who asserts that

> llothar wrote:
> >  only contribution to software development was the theory of
> > "literate" programming.

Good luck, mate.

-o



From arunasunil at gmail.com  Tue Oct 23 15:08:15 2007
From: arunasunil at gmail.com (arunasunil at gmail.com)
Date: Tue, 23 Oct 2007 12:08:15 -0700
Subject: Monitoring external processes
In-Reply-To: <1193121191.865066.13950@v29g2000prd.googlegroups.com>
References: <1193116191.769987.198560@z24g2000prh.googlegroups.com>
	<1193121191.865066.13950@v29g2000prd.googlegroups.com>
Message-ID: <1193166495.635707.204330@t8g2000prg.googlegroups.com>

On Oct 22, 11:33 pm, Graham Dumpleton <Graham.Dumple... at gmail.com>
wrote:
> On Oct 23, 3:09 pm, arunasu... at gmail.com wrote:
>
> > Hi,
>
> > Is there a way to track external processes launched by python on the
> > Mac? I am using subprocess module to launch the process.
>
> > Thanks
> > Sunil
>
> If using Python 2.3/2.4, you can use os.wait().
>
> If using Python 2.5, there is also have os.wait3() and os.wait4().
>
> See the operating system manual pages for the difference. Ie.,
>
>   man wait4
>
> Graham

I'm having a slight problem using wait3 or wait4. I want monitor a
launched process and get its resource usage information. When I call
os.wait4 with the pid the first time the call returns successfully but
the second time around I get a OSError with "No child processes"
error. I have tried using WCONTINUED, WNOHANG and WUNTRACED options.

Sunil.



From adam.donahue at gmail.com  Thu Oct 25 11:35:50 2007
From: adam.donahue at gmail.com (Adam Donahue)
Date: Thu, 25 Oct 2007 15:35:50 -0000
Subject: Delete all not allowed characters..
In-Reply-To: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
Message-ID: <1193326550.047775.295170@22g2000hsm.googlegroups.com>

On Oct 25, 10:52 am, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to delete all now allowed characters in my text.
> I use this function:
>
> def clear(s1=""):
>     if s1:
>         allowed =
> [u'+',u'0',u'1',u'2',u'3',u'4',u'5',u'6',u'7',u'8',u'9',u' ', u'?',
> u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', 'A',
> 'C', 'B', 'E', 'D', 'G', 'F', 'I', 'H', 'K', 'J', 'M', 'L', 'O', 'N',
> 'Q', 'P', 'S', 'R', 'U', 'T', 'W', 'V', 'Y', 'X', 'Z', 'a', 'c', 'b',
> 'e', 'd', 'g', 'f', 'i', 'h', 'k', 'j', 'm', 'l', 'o', 'n', 'q', 'p',
> 's', 'r', 'u', 't', 'w', 'v', 'y', 'x', 'z']
>         s1 = "".join(ch for ch in s1 if ch in allowed)
>         return s1
>
> ....And my problem this function replace the character to "" but i
> want to " "
> for example:
> input: Exam%^^ple
> output: Exam   ple
> I want to this output but in my code output "Example"
> How can i do quickly because the text is very long..

Something like:

import re
def clear( s, allowed=[], case_sensitive=True):
    flags = ''
    if not case_sensitive:
        flags = '(?i)'
    return re.sub( flags + '[^%s]' % ''.join( allowed ), ' ', s )

And call:

clear( '123abcdefgABCdefg321', [ 'a', 'b', 'c' ] )
clear( '123abcdefgABCdefg321', [ 'a', 'b', 'c' ], False )

And so forth.  Or just use re directly!

(This implementation is imperfect in that it's possible to hack the
regular expression, and it may break with mismatched '[]' characters,
but the idea is there.)

Adam



From Scott.Daniels at Acm.Org  Wed Oct 10 08:43:34 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 10 Oct 2007 05:43:34 -0700
Subject: function wrappers
In-Reply-To: <mailman.20.1192013978.927.python-list@python.org>
References: <mailman.20.1192013978.927.python-list@python.org>
Message-ID: <13gpi4454aajm59@corp.supernews.com>

Ramon Crehuet wrote:
> def require_int(func):
>       def wrapper(arg):
>           assert isinstance(arg, int)
>           return func(arg)
>       return wrapper
> def p1(a):
>   print a
> p2 = require_int(p1)
> 
> My question is: why do p2 arguments become wrapper arguments? What is 
> the flux of the arguments in the program when you pass functions as 
> arguments?
I suspect you don't understand that each time require_int is called
a _new_ function named wrapper is created (and then returned).

-Scott David Daniels
Scott David Daniels at Acm.Org


From goldtech at worldpost.com  Sun Oct  7 07:26:22 2007
From: goldtech at worldpost.com (goldtech)
Date: Sun, 07 Oct 2007 04:26:22 -0700
Subject: Tkinter text widget
In-Reply-To: <1191740891.034348.52560@d55g2000hsg.googlegroups.com>
References: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
	<1191740891.034348.52560@d55g2000hsg.googlegroups.com>
Message-ID: <1191756382.041635.19700@50g2000hsm.googlegroups.com>


> You can scroll, but you can't see the cursor. Use
>
> for x in range(30):
>     text.insert(END, "%3d " % x + i)
>
> to check.
>
> ED

I tried it w/the line numbers. On my system I see 0-23.

But there is no way to scroll. Still the same result.



From happyhondje at gmail.com  Fri Oct 26 09:55:04 2007
From: happyhondje at gmail.com (happyhondje at gmail.com)
Date: Fri, 26 Oct 2007 06:55:04 -0700
Subject: An efficient, pythonic way to calculate result sets
In-Reply-To: <1193358833.133666.253680@k35g2000prh.googlegroups.com>
References: <1193326263.917893.266620@e9g2000prf.googlegroups.com>
	<1193358833.133666.253680@k35g2000prh.googlegroups.com>
Message-ID: <1193406904.106002.278830@19g2000hsx.googlegroups.com>

On Oct 26, 2:33 am, Raymond Hettinger <pyt... at rcn.com> wrote:
> On Oct 25, 8:31 am, happyhon... at gmail.com wrote:
>
>
>
> > I've got a little issue, both programming and performance-wise. I have
> > a set, containing objects that refer to other sets. For example, in a
> > simple notation: (<a, b, c>, <d, e>) (or in a more object-like
> > display: set(obj1.choices=set(a, b, c) ). There may be obj1..objN
> > objects in the outer set, and the amount of items in the choices sets
> > could also reach a high number. The objects in the choices sets might
> > overlap.
>
> > Now I want to have all possible combinations, like this: (a, d), (b,
> > d), (c, d), (a, e), (b, e), (c, e).
>
> > However, I've got a few catches that make an already (icky) recursive
> > function worse to use.
>
> > First of all, I want to be able to only choose things so that the
> > outer 'result sets' have the same length. For example, if you'd have
> > (<a, b>, <a, c>), you might pick (a, a) with a simple algorythm, the
> > basic behaviour of sets reducing it to (a) and thus having an improper
> > length. I could add yet another loop after calculating everything to
> > throw out any result sets with the improper length, but that would be
> > highly inefficient.
>
> > Second, I'd hope to be able to say that objX should be assumed to have
> > made the choice z. In the first example I mentioned, if I said that
> > 'obj1 == a', the only result sets that would come out would be (a, d)
> > and (a, e).
>
> def cross_nodups(*args):
>     'Cross product after eliminating repeat elements, keeping constant
> size'
>     ans = [[]]
>     for arg in args:
>         ans = [x+[y] for x in ans for y in arg if y not in x]
>     return ans
>
> def choose_first(obj1, *args):
>     'Assume a choice of a first object'
>     return cross_nodups(obj1, *args[1:])
>
> >>> print cross_nodups('ab', 'acd', 'fg')
>
> [['a', 'c', 'f'], ['a', 'c', 'g'], ['a', 'd', 'f'], ['a', 'd', 'g'],
> ['b', 'a', 'f'], ['b', 'a', 'g'], ['b', 'c', 'f'], ['b', 'c', 'g'],
> ['b', 'd', 'f'], ['b', 'd', 'g']]
>
> >>> print choose_first('a', s1,s2,s3)
>
> [['a', 'c', 'f'], ['a', 'c', 'g'], ['a', 'd', 'f'], ['a', 'd', 'g']]
>
> > (and hopefully not rely on
> > recursion
>
> Easy exercise of transforming recursion to iteration left to the
> reader.
>
> Raymond

Wonderful, thank you Raymond!

I only had one problem with it still (damn I'm picky) and despite
prodding around in that generator expression which absolutely defies
my logic, I've been able to get it working.

In my situation, the choices are always sets rather than strings.
While it shouldn't make a difference (both are iterable), my sets
contain strings.. which end up being cut in pieces and matched
seperately with everything. I've solved this as follows:

def cross_nodups(*args):
    'Cross product after eliminating repeat elements, keeping constant
size'
    ans = [[]]
    for arg in args:
        ans = [x+[y] for x in ans for y in arg if y not in x]
    return ans

def choose_first(obj1, *args):
    'Assume a choice of a first object'
    return cross_nodups(frozenset((obj1,)), *args[1:])

Gives results:

>>> choose_first("H", set(["H", "R"]), set(["H", "R", "K", "S"]), set(["H", "R", "K", "S"]))
set([frozenset(['H', 'S', 'R']), frozenset(['H', 'K', 'R']),
frozenset(['H', 'K', 'S'])])
>>> choose_first("HA", set(["HA", "RA"]), set(["HA", "RA", "KA", "SA"]), set(["HA", "RA", "KA", "SA"]))
set([frozenset(['KA', 'HA', 'RA']), frozenset(['SA', 'HA', 'RA']),
frozenset(['KA', 'HA', 'SA'])])

rather than

>>> choose_first("HA", set(["HA", "RA"]), set(["HA", "RA", "KA", "SA"]), set(["HA", "RA", "KA", "SA"]))
set([frozenset(['A', 'SA', 'HA']), frozenset(['H', 'KA', 'SA']),
frozenset(['H', 'KA', 'RA']), frozenset(['A', 'KA', 'HA']),
frozenset(['H', 'HA', 'RA']), frozenset(['H', 'SA', 'HA']),
frozenset(['A', 'SA', 'RA']), frozenset(['A', 'KA', 'SA']),
frozenset(['A', 'HA', 'RA']), frozenset(['H', 'KA', 'HA']),
frozenset(['H', 'SA', 'RA']), frozenset(['A', 'KA', 'RA'])])

Now, this works great! Although I am still torn apart on a possible
optimization (that I'm not sure is an optimization yet):

- should I use the original cross_nodups() function you thought up and
convert all of its contents to a proper set of sets (a secondary loop
afterwards). This seems more efficient since I would not be doing a
lot of frozenset() and list() conversions while looping.
- however, the list() and frozenset() construct should reduce looping
quite a bit and essentially prevent a lot of iterations that would be
created due to the doubles in the original functions output.

Of course that depends on the contents, so for simplicities sake, say
that the algorythm is to run with 5-10 choices to make, each choice
being out of averaged 6 items that may or may not conflict with other
items.

Again, thank you very much Raymond, your snippet makes my monstrosity
quite ready for /dev/null. :)



From paul.hankin at gmail.com  Sat Oct 20 12:17:20 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 20 Oct 2007 16:17:20 -0000
Subject: where do I need to "tab"?
In-Reply-To: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
References: <1192845611.102983.310980@i38g2000prf.googlegroups.com>
Message-ID: <1192897040.325894.306470@e9g2000prf.googlegroups.com>

On Oct 20, 3:00 am, "narutocan... at gmail.com" <narutocan... at gmail.com>
wrote:
>     print b if ((b > a) and (b < (a * b))) else a

Everyone else has already pointed out that you need 2.5. As a matter
of style, the above line can be written more cleanly:

print b if a < b < a * b else a

--
Paul Hankin



From dfabrizio51 at gmail.com  Mon Oct 29 11:31:35 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Mon, 29 Oct 2007 08:31:35 -0700
Subject: what version python and wxPython comes with Mac OS X Leopard
Message-ID: <1193671895.765873.209930@z9g2000hsf.googlegroups.com>

Hello,

Anyone using Leopard know which versions of Python and wxPython and
any other Python related modules are default with the new OS?

Thanks,



From bedouglas at earthlink.net  Thu Oct  4 10:17:44 2007
From: bedouglas at earthlink.net (bruce)
Date: Thu, 4 Oct 2007 07:17:44 -0700
Subject: Auction/Bidding system for AdWords/AdSense functionality
Message-ID: <1a9f01c80691$55ae25c0$0301a8c0@tmesa.com>

Hi...

Looking for an app that provides bidding/auction functionality, for a system
similar to what Google provides.

Anybody have any expertise with any system like this, or any kind of app
that could be modified to get this kind of functionality.

Thanks





From kyosohma at gmail.com  Wed Oct  3 09:00:27 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 03 Oct 2007 13:00:27 -0000
Subject: setuptools without unexpected downloads
In-Reply-To: <mailman.1425.1191384076.2658.python-list@python.org>
References: <87ejgmklep.fsf@benfinney.id.au>
	<1190802526.695391.326220@n39g2000hsh.googlegroups.com>
	<5lurorFa92euU1@mid.uni-berlin.de>
	<1190805012.275901.227570@57g2000hsv.googlegroups.com>
	<5luv0iFaai82U1@mid.uni-berlin.de>
	<1190808836.056298.232640@57g2000hsv.googlegroups.com>
	<fddivk$f90$1@sea.gmane.org>
	<mailman.1111.1190813942.2658.python-list@python.org>
	<1190840682.716950.131830@r29g2000hsg.googlegroups.com>
	<mailman.1164.1190908383.2658.python-list@python.org>
	<1191330684.132452.179580@y42g2000hsy.googlegroups.com>
	<mailman.1425.1191384076.2658.python-list@python.org>
Message-ID: <1191416427.027629.102700@y42g2000hsy.googlegroups.com>

On Oct 2, 11:00 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Tue, 02 Oct 2007 10:11:24 -0300, <kyoso... at gmail.com> escribi?:
>
> > Holden indicates that VS2003 is the current compiler used for the
> > official Python distribution. Do you know how to use that program to
> > compile an exe?
>
> Open the program, press F1 and read the documentation provided by its
> vendor, Microsoft.

Sheesh! MS Documentation would take weeks and weeks to read, let alone
analyze and grok. I was hoping to avoid that, but it was my next step
if I hadn't received an answer.

>
> > I'm assuming the line "python setup.py bdist_wininst"
> > isn't sufficient since it was an answer to my somewhat naive question.
>
> Why not? As F.L. said, if the setup.py is properly built, doing so should
> compile and link all the required modules.
> Note that it's not *required* to use Visual Studio to compile Python
> extensions; any decent compiler would do [provided it links against the
> same RTL as used by VS]

F.L. also said to use "the same compilers as used for the python.org
core distribution" if possible.

>
> This recent blog post contains step-by-step instructions on using free
> tools to compile python extensions:
> <http://boodebr.org/main/python/build-windows-extensions>
>
> --
> Gabriel Genellina

I'll check out your link as well as Max's though. I'm not averse to
doing it open source.

Mike



From arvind.r.raghavan at gmail.com  Tue Oct  9 13:37:05 2007
From: arvind.r.raghavan at gmail.com (arvind)
Date: Tue, 09 Oct 2007 17:37:05 -0000
Subject: Memory leak/gc.get_objects()/Improved gc in version 2.5
In-Reply-To: <mailman.21.1191941678.916.python-list@python.org>
References: <1191890643.412806.121180@r29g2000hsg.googlegroups.com>
	<mailman.21.1191941678.916.python-list@python.org>
Message-ID: <1191951425.220996.314120@v3g2000hsg.googlegroups.com>

On Oct 9, 7:54 am, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/8/07, crazy420fing... at gmail.com <crazy420fing... at gmail.com> wrote:
>
>
>
> > I'm running a python program that simulates a wireless network
> > protocol for a certain number of "frames" (measure of time).  I've
> > observed the following:
>
> > 1. The memory consumption of the program grows as the number of frames
> > I simulate increases.
>
> > To verify this, I've used two methods, which I invoke after every
> > frame simulated:
>
> > --  Parsing the /proc/<pid>/status file as in:
> >http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/286222
> > --  Using ps vg | grep python | awk '!/grep/ {print " ",$8}'  in an
> > os.system() call.
>
> > The memory usage vs. frame number graph shows some big "jumps" at
> > certain points, and, after a large number of frames, shows a steady
> > upward slope
>
> This would be expected if you're creating ever-larger amounts of
> objects - python uses memory pools and as the number of simultaneous
> objects increases, the size of the pool will need to increase. This
> isn't expected if the total number of objects you create is pretty
> much static, but the way you're trying to determine that is flawed
> (see below).
>
>
>
> > 2. I think I've verified that the objects I instantiate are actually
> > freed-- I'm therefore assuming that this "leak" is "caused" by
> > python's garbage collection mechanism. I count the number of objects I
> > generate that are being tracked by gc as follows:
>
> >     gc.collect()
> >     objCount = {}
> >     objList = gc.get_objects()
> >     for obj in objList:
> >         if getattr(obj, "__class__", None):
> >             name = obj.__class__.__name__
> >             if objCount.has_key(name):
> >                 objCount[name] += 1
> >             else:
> >                 objCount[name] = 1
>
> >     for name in objCount:
> >         print name, " :", objCount[name]
>
> >    del objList
>
> > Running this snippet every hundred frames or so, shows that the number
> > of objects managed by gc is not growing.
>
> > I upgraded to Python 2.5. in an attempt to solve this problem. The
> > only change in my observations from version 2.4 is that the absolute
> > memory usage level seems to have dropped. However, I still see the
> > jumps in memory usage at the same points in time.
>
> > Can anybody explain why the memory usage shows significant jumps (~200
> > kB or ~500 kb) over time (i.e. "frames") even though there is no
> > apparent increase in the objects managed by gc? Note that I'm calling
> > gc.collect() regularly.
>
> You're misunderstanding the purpose of Pythons GC. Python is
> refcounted. The GC exists only to find and break reference cycles. If
> you don't have ref cycles, the GC doesn't do anything and you could
> just turn it off.
>
> gc.get_objects() is a snapshot of the currently existing objects, and
> won't give you any information about peak object count, which is the
> most direct correlation to total memory use.
>
> > Thanks for your attention,
>
> > Arvind
>
> > --
> >http://mail.python.org/mailman/listinfo/python-list

Chris,

Thanks for your reply.

To answer the earlier question, I used CPython 2.4.3 and ActivePython
2.5.1 in my analysis above. No custom modules added. Interpreter
banners are at the end of this message.

In my program, I do keep instantiating new objects every "frame".
However, these objects are no longer needed after a few frames, and
the program no longer maintains a reference to old objects. Therefore,
I expect the reference-counting mechanism built into python (whatever
it is, if not gc) to free memory used by these objects and return it
to the "pool" from which they were allocated. Further, I would expect
that in time, entire pools would become free, and these free pools
should be reused for new objects. Therefore the total number of pools
allocated (and therefore "arenas"?) should not grow over time, if
pools are being correctly reclaimed. Is this not expected behavior?

Also, since I sample gc.get_objects() frequently, I would expect that
I would stumble upon a "peak" memory usage snapshot, or at the very
least see a good bit of variation in the output. However, this does
not occur.

Finally, if I deliberately hold on to references to old objects,
gc.get_objects() clearly shows an increasing number of objects being
tracked in each snapshot, and the memory leak is well explained.

Python version info:

ActivePython 2.5.1.1 (ActiveState Software Inc.) based on
Python 2.5.1 (r251:54863, May  2 2007, 08:46:07)
[GCC 3.3.4 (pre 3.3.5 20040809)] on linux2

AND

Python 2.4.3 (#1, Mar 14 2007, 19:01:42)
[GCC 4.1.1 20070105 (Red Hat 4.1.1-52)] on linux2


Arvind



From arkanes at gmail.com  Mon Oct 22 14:44:27 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 22 Oct 2007 13:44:27 -0500
Subject: Dealing with "funny" characters
In-Reply-To: <LlpSi.6020$y21.124@newssvr19.news.prodigy.net>
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
	<mailman.259.1192890437.13605.python-list@python.org>
	<LlpSi.6020$y21.124@newssvr19.news.prodigy.net>
Message-ID: <4866bea60710221144g29b3d87bn2057b7e196a4b36d@mail.gmail.com>

On 10/20/07, John Nagle <nagle at animats.com> wrote:
> Gert-Jan wrote:
> > sophie_newbie schreef:
> >> Hi, I want to store python text strings that characters like "?" "?"
> >> in a mysql varchar text field. Now my problem is that mysql does not
> >> seem to accept these characters. I'm wondering if there is any way I
> >> can somehow "encode" these characters to appear as normal characters
> >> and then "decode" them when I want to get them out of the database
> >> again?
> >
> >
> > It seems you'll have to use Unicode in your program rather than 'plain'
> > strings.
> >
> > Before storing an unicode textstring in a database or a file, you must
> > encode it using an appropriate encoding/codepage, for example:
> >
> > outputstring = unicodeobject.encode('utf-8')
>
>     No, no, that's wrong.  MySQL and the Python interface to it understand
> Unicode.  You don't want to convert data to UTF-8 before putting it in a
> database; the database indexing won't work.
>

Just for the record, if MySQL supports ucs-2 and/or ucs-4,  using the
one that matches your Python build is likely to give you better
runtime performance.

From steven.bethard at gmail.com  Mon Oct 22 19:31:51 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 22 Oct 2007 17:31:51 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471d06e2$0$12275$426a74cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
Message-ID: <LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>

Bruno Desthuilliers wrote:
> Steven Bethard a ?crit :
> (snip)
>> In Python, you can use property() to make method calls look like 
>> attribute access.  This could be necessary if you have an existing API 
>> that used public attributes, but changes to your code require those 
>> attributes to do additional calculations now.
>>
>> But if you're creating a class for the first time, it should *never* 
>> use property().  There's no need to retrofit anything.
> 
> May I kindly disagree here ?-)

Of course. ;-)

> Computed attributes are IMHO not only a life-saver when it comes to 
> refactoring. There are cases where you *really* have - by 'design' I'd 
> say - the semantic of a property, but know from the start you'll need 
> computation (for whatever reason). Then what would be the rationale for 
> using explicit getters/setters ?

I'd be interested to hear what these use cases are.

Generally, people expect that attributes are used for simple state, and 
methods are used when some sort of computation is required. If you use 
attributes when some computation is required, you violate your users' 
expectations.

Of course, you can always document that your attributes require 
computation. But you're definitely adding some cognitive load by 
violating the normal expected behavior of attributes and methods.

STeVe


From Scott.Daniels at Acm.Org  Thu Oct 11 22:23:56 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Thu, 11 Oct 2007 19:23:56 -0700
Subject: howto add a sub-directory to the searchpath / namespace ?
In-Reply-To: <13gr8u2o9tdm062@corp.supernews.com>
References: <mailman.45.1192048895.927.python-list@python.org>	<Np-dnQSN1Ysyo5DanZ2dnUVZ_tbinZ2d@comcast.com>
	<mailman.53.1192057415.927.python-list@python.org>
	<13gr8u2o9tdm062@corp.supernews.com>
Message-ID: <13gtmi7oikej429@corp.supernews.com>

[david] wrote:
> r" indicates a 'regular expression' string, normally
> called a raw string. It means that \ characters are
> treated using the regex syntax rather than the c syntax.

This is an incredibly creative answer , if not fastidiously
correct.  Raw strings simply disable the special effects of
backslash (\) within the string (except that it cannot be
the final character of a quoted string even if it a raw string
for technical lexer (tokenizer) simplicity reasons).  The regex
syntax is used on the resulting string constant if (and only if)
the string is passed to the regular expression functions as a
regex pattern parameter.

-Scott David Daniels
Scott.Daniels at Acm.Org


From tdelaney at avaya.com  Wed Oct 10 21:27:17 2007
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Thu, 11 Oct 2007 09:27:17 +0800
Subject: Problem of Readability of Python
In-Reply-To: <1192027697.413492.90430@g4g2000hsf.googlegroups.com>
Message-ID: <E4C7BCAB1872014F81CEAACD25699B8C0849F1@301081ANEX2.global.avaya.com>

Licheng Fang wrote:

> This is enlightening. Surely I shouldn't have worried too much about
> performance before doing some measurement.

And with that statement you have truly achieved enlightenment.

Or to put it another way ... performance tuning without profiling is a
waste of time.

Tim Delaney


From israelu at elbit.co.il  Mon Oct 22 05:30:01 2007
From: israelu at elbit.co.il (iu2)
Date: Mon, 22 Oct 2007 02:30:01 -0700
Subject: Failure to connect in SimpleXMLRPCServer/xmlrpclib
In-Reply-To: <5o34stFkiv5sU1@mid.uni-berlin.de>
References: <1193034835.803633.121600@z24g2000prh.googlegroups.com>
	<5o34stFkiv5sU1@mid.uni-berlin.de>
Message-ID: <1193045401.857790.307960@v29g2000prd.googlegroups.com>

On Oct 22, 10:21 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> iu2 wrote:
>
> > Hi all,
>
> > I've copied the example of RPC usage from the Python's doc.
> > When the client and server were on the same PC ("localhost") (I use
> > Windows)
> > it worked ok. But putting the server on a different PC raised the
> > error:
>
> > gaierror: (11001, 'getaddrinfo failed')
> > The error was raised upion accessing some function of the server,
> > i.e.,
> > print s.add_nums(1, 2, 3)  # server registered function
>
> > PCs in our organization are accessed by "\\<name>" so I used
>
> > s = xmlrpclib.Server(r'http://\\pc_name:8000')
> > I got the same error when I put some non-existing name.
> > Trying to remove the double-backslash from the PC's name raised the
> > error:
> > error: (10061, 'Connection refused')
>
> > I'll appreciate your help on this.
>
> Maybe using the IP-address helps?
>
> Diez- Hide quoted text -
>
> - Show quoted text -

No, that doesn't help either.
May be I don't use it right.
I tried "http://1.2.3.4:8000"
and
r"http://\\1.2.3.4:8000"

with no success.



From yanpfei at gmail.com  Fri Oct  5 04:52:49 2007
From: yanpfei at gmail.com (yanpfei at gmail.com)
Date: Fri, 05 Oct 2007 01:52:49 -0700
Subject: where can I get a space supporting cgi written in python
Message-ID: <1191574369.396115.138020@g4g2000hsf.googlegroups.com>

I'm studying python and very interested in cgi written in python, but
i can't find a free host suporting it.who can tell where can i sign up
for a free python host?
I just wanna have a try, the space dont have to be very large, 20M or
50M is OK
thanks!



From jgodoy at gmail.com  Sat Oct  6 11:42:48 2007
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 06 Oct 2007 12:42:48 -0300
Subject: Segmentation fault..
References: <1191668481.171014.54840@57g2000hsv.googlegroups.com>
	<f67kt4-v7q.ln1@strongwill.g2ctech>
	<47077c62$0$18737$426a74cc@news.free.fr>
Message-ID: <70nkt4-68e.ln1@strongwill.g2ctech>

Bruno Desthuilliers wrote:

> Jorge Godoy a ?crit :
>> Without seeing any code, it is hard to say anything.  But the answer to
>> the ultimate question is "42".
> 
> Indeed. Err, what was the question, exactly ?-)

As soon as calculations are finished, you'll know. :-)


From nagle at animats.com  Tue Oct  2 11:11:28 2007
From: nagle at animats.com (John Nagle)
Date: Tue, 02 Oct 2007 15:11:28 GMT
Subject: Why doesn't Python's "robotparser" like Wikipedia's "robots.txt"
	file?
In-Reply-To: <mailman.1392.1191334209.2658.python-list@python.org>
References: <HYiMi.9932$JD.6615@newssvr21.news.prodigy.net>
	<mailman.1392.1191334209.2658.python-list@python.org>
Message-ID: <ActMi.30614$eY.11375@newssvr13.news.prodigy.net>

Filip Salomonsson wrote:
> On 02/10/2007, John Nagle <nagle at animats.com> wrote:
>> But there's something in there now that robotparser doesn't like.
>> Any ideas?
> 
> Wikipedia denies _all_ access for the standard urllib user agent, and
> when the robotparser gets a 401 or 403 response when trying to fetch
> robots.txt, it is equivalent to "Disallow: *".
> 
> http://infix.se/2006/05/17/robotparser

     That explains it.  It's an undocumented feature of "robotparser",
as is the 'errcode' variable.  The documentation of "robotparser" is
silent on error handling (can it raise an exception?) and should be
updated.

> It could also be worth mentioning that if you were planning on
> crawling a lot of Wikipedia pages, you may be better off downloading
> the whole thing instead: <http://download.wikimedia.org/>
> (perhaps adding <http://code.google.com/p/wikimarkup/> to convert the
> wiki markup to HTML).

     This is for SiteTruth, the site rating system (see "sitetruth.com"),
and we never look at more than 21 pages per site.  We're looking for
the name and address of the business behind the web site, and if we
can't find that after looking in 20 of the most obvious places to
look, it's either not there or not "prominently disclosed".

				John Nagle


From mensanator at aol.com  Tue Oct 23 13:33:14 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 23 Oct 2007 10:33:14 -0700
Subject: Iteration for Factorials
In-Reply-To: <cqkTi.977$BB6.524@tornado.fastwebnet.it>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193080349.610343.95430@v23g2000prn.googlegroups.com>
	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>
	<mailman.344.1193084287.13605.python-list@python.org>
	<1193089836.219692.117420@q5g2000prf.googlegroups.com>
	<mailman.349.1193092818.13605.python-list@python.org>
	<cqkTi.977$BB6.524@tornado.fastwebnet.it>
Message-ID: <1193160794.433684.245150@v29g2000prd.googlegroups.com>

On Oct 23, 5:55 am, Marco Mariani <ma... at sferacarta.com> wrote:
> Tim Chase wrote:
> >>>> fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or not
> > i and 1 or None
>
> > Stunts like this would get a person fired around here if they
> > were found in production code :)
>
> eheh, indeed.
>
> def fact(n):
>      try:
>          return eval('*'.join(str(x) for x in range(1,n+1)))
>      except:
>          return 1

Needs work.

IDLE 1.2
>>> def fact(n):
     try:
         return eval('*'.join(str(x) for x in range(1,n+1)))
     except:
         return 1

>>> fact(3)
6
>>> fact(2)
2
>>> fact(1)
1
>>> fact(0)
1
>>> fact(-1)
1
>>> fact(-2)
1



From mccredie at gmail.com  Sun Oct  7 01:32:49 2007
From: mccredie at gmail.com (Matimus)
Date: Sun, 07 Oct 2007 05:32:49 -0000
Subject: How to create a file on users XP desktop
In-Reply-To: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
Message-ID: <1191735169.441525.106060@o80g2000hse.googlegroups.com>

On Oct 6, 8:31 pm, goldtech <goldt... at worldpost.com> wrote:
> Can anyone link me or explain the following:
>
> I open a file in a python script. I want the new file's location to be
> on the user's desktop in a Windows XP environment.  fileHandle = open
> (....., 'w' )  what I guess I'm looking for is an environmental
> variable that will usually be correct on most XP desktops and will
> work in the open statement. Or is there another way?
>
> Thanks

I've always used 'USERPROFILE'. I'm not sure how standard it is, but I
have never run into any issues.

Code for your perusal:
[code]
import os, os.path
prof_path = os.environ['USERPROFILE']
filename = os.path.join(prof_path,'Desktop','filename.txt')
f = open(filename,'w')
try:
    # do stuff with f
finally:
    f.close()
[/code]

Matt



From dokondr at gmail.com  Mon Oct 15 11:05:36 2007
From: dokondr at gmail.com (Dmitri O.Kondratiev)
Date: Mon, 15 Oct 2007 19:05:36 +0400
Subject: Newbi Q: What is a rational for strings not being lists in Python?
Message-ID: <53396d9e0710150805n6e2cfa53je05d24ec51190aa0@mail.gmail.com>

To clarify my point:
reverse()  is  a lucky one  - Python has variants of *this particular*
function both for lists and strings. Yet what about other list functions?
How in general, can I write a function that works  both on list and string
types? Both are sequences, right? Why string is not a subtype of a list
then?
The advantage of string being a list of elements, where element is a char is
that all list functions will work *without any modifications* on strings as
well as on other types of lists.
So, I am trying to understand: what is a rational for strings not being
lists in Python?

Thanks,
-- 
Dmitri O. Kondratiev
dokondr at gmail.com
http://www.geocities.com/dkondr

On 10/15/07, Dmitri O.Kondratiev <dokondr at gmail.com> wrote:
>
> Gary, thanks for lots of info!
> Python strings are not lists! I got it now. That's a pity, I need two
> different functions: one to reverse a list and one to reverse a string:
>
> def reverseList(xs):
>     if xs == []:
>         return xs
>     else:
>         return (reverseList (xs[1:])) + [xs[0]]
>
> def reverseStr(str):
>     if str == "":
>         return str
>     else:
>         return (reverseStr (str[1:])) + str[0]
>
> Ok. Now regarding in-place reversal of a list:
>
> >>> l = [1,2,3]
> >>> l
> [1, 2, 3]
> >>> l.reverse()
> >>> l
> [3, 2, 1]
>
> That was, as I expected. Good.
>
> Then why this ? :
>
> >>> ls = [1,2,3].reverse()
> >>> ls
> >>>
> >>> print [1,2,3].reverse()
> None
> >>>
> I mean, why ls is empty after assignment?
>
> Also, I couldn't find in the Python docs what this form of slicing means:
> xs[::-1]  ?
>
> It works for creating a reversed copy of either a string or a list, but
> what does '::-1' syntax means?
>
> Thanks,
>
> Dmitri O. Kondratiev
> dokondr at gmail.com
> http://www.geocities.com/dkondr
>
> On 10/15/07, Gary Herron < gherron at islandtraining.com> wrote:
> >
> > Dmitri O.Kondratiev wrote:
> > >
> > > The function I wrote (below) reverses lists all right:
> > >
> > > def reverse(xs):
> > >     if xs == []:
> > >         return []
> > >     else:
> > >         return (reverse (xs[1:])) + [xs[0]]
> > >
> > >
> > > >>> reverse ([1,2,3])
> > > [3, 2, 1]
> > > >>>
> > >
> > >
> > > Yet when I try to reverse a string I  get:
> > >
> > > >>> reverse ("abc")
> > >
> > > ...
> > > ...
> > > ...
> > >
> > >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> > >
> > >     return (reverse (xs[1:])) + [xs[0]]
> > >
> > >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> > >
> > >     return (reverse (xs[1:])) + [xs[0]]
> > >
> > >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
> > >
> > >     if xs == []:
> > >
> > > RuntimeError: maximum recursion depth exceeded in cmp
> > >
> > > >>>
> > >
> > > What's wrong? Why recursion never stops?
> > >
> > If you are doing this as an python-learning exercise, then read on.   If
> >
> > you are doing this reversal for real code, then try:
> >
> >   xs.reverse() for in-place reversal of a list (but not a string), or
> >   result = xs[::-1] for creating a reversed copy of either a string or a
> > list
> >
> >
> > Your recursion stops when xs == [], but when you're stripping characters
> > off a string,  like 'abc', the remaining portion will be 'bc', then 'c',
> > than '', but never [] so you 'll never stop.
> >
> > Try:
> >
> > if xs == []:
> >     return []
> > elif xs == '':
> >     return ''
> > else:
> >     ...
> >
> >
> > Gary Herron
> >
> >
> > >
> > > Thanks,
> > > Dima
> >
> >
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071015/b1405bb0/attachment.html>

From Devender.Kumar at akerkvaerner.com  Wed Oct 17 06:05:11 2007
From: Devender.Kumar at akerkvaerner.com (Devender.Kumar at akerkvaerner.com)
Date: Wed, 17 Oct 2007 12:05:11 +0200
Subject: UK Jobs With VISA Sponsorship
Message-ID: <2C98FA3C728DCC41839F312AB07BB7701835C2@GDC-VMSX-G01.res.no.enterdir.com>

Hi,

Can u let me please about UK work Permit and Job..................right
now am in Norway and holding Schengen Visa............

Bye
Devender Kumar
0047 96813328


This e-mail and any attachment are confidential and may be privileged or otherwise protected from disclosure. It is solely intended for the person(s) named above. If you are not the intended recipient, any reading, use, disclosure, copying or distribution of all or parts of this e-mail or associated attachments is strictly prohibited. If you are not an intended recipient, please notify the sender immediately by replying to this message or by telephone and delete this email and any attachments permanently from your system.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/ae1ab4e1/attachment.html>

From jamesthiele.usenet at gmail.com  Sun Oct 28 15:43:42 2007
From: jamesthiele.usenet at gmail.com (James Thiele)
Date: Sun, 28 Oct 2007 19:43:42 -0000
Subject: Readline on OS X for trunk build
Message-ID: <1193600622.800741.179850@e34g2000pro.googlegroups.com>

Just got the trunk out of svn to build 2.6 alpha on OS X 10.4(Tiger).
No readline. I can't remember what I did to get it when I built 2.5
but it works there. Google searches are bringing up what to do for the
Python 2.3 that comes with OS X 10.4. Could someone point me in the
right direction?

Thanks,
James



From deets at nospam.web.de  Tue Oct  9 07:41:55 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 13:41:55 +0200
Subject: Python and UML
References: <1191915187.827445.222470@r29g2000hsg.googlegroups.com>
	<5n12llFfhe3hU3@mid.uni-berlin.de>
	<1191925999.268412.39470@v3g2000hsg.googlegroups.com>
Message-ID: <5n17o3Ffq5g6U1@mid.uni-berlin.de>

 aine_canby at yahoo.com wrote:

> On 9 Okt, 12:15, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>>  aine_ca... at yahoo.com wrote:
>> > Hi,
>>
>> > I'm working with Python2.5 and pythonWin.
>>
>> > I'd like to start working with and learning more with UML. Can anyone
>> > suggest any freeware design software that I might use to do this? I
>> > also have
>> > Visio installed on my computer if thats of any use...
>>
>> ArgoUML as modelling tool. The python-IDE eric also generates UML from
>> class-hierarchies.
>>
>> IMHO UML is ... crap, at least when it comes to actual developing. But
>> apart from that very personal opinion, the non-static-typedness of Python
>> makes it hard to bring UML to it's full (however small that is in my POV)
>> power.
>>
>> Diez
> 
>>> IMHO UML is ... crap, at least when it comes to actual developing. But
>>> apart
> from that very personal opinion, the non-static-typedness of Python
> makes
> it hard to bring UML to it's full (however small that is in my POV)
> power.
> 
> What alternatives are there?

Alternatives to what? UML? None. There is no thing that allows you to sit at
a round table, push some rectangles around until everyone at the table
feels comfy & cozy and then release. Coding means typing. 

Diez


From erik at myemma.com  Fri Oct 12 12:33:11 2007
From: erik at myemma.com (Erik Jones)
Date: Fri, 12 Oct 2007 11:33:11 -0500
Subject: PEP idea: Instrumented Python
In-Reply-To: <c38b163f0710120809l417bd29apad781a55c491813d@mail.gmail.com>
References: <c38b163f0710120809l417bd29apad781a55c491813d@mail.gmail.com>
Message-ID: <A043BC3C-2F51-4906-898F-5B990FD0D937@myemma.com>

On Oct 12, 2007, at 10:09 AM, Christopher Nelson wrote:

> I was looking at adding dtrace-like dynamic tracing to Python.   
> Note that this isn't dtrace itself.  The basic rationale:
>
> 1. A lot of enterprise-level software is written in Python.  It is  
> difficult to impossible to reproduce the customer environment in a  
> test lab.  Sometimes applications hang mysteriously, and we are  
> unable to duplicate the problems in our environment.
> 2. dtrace is a good design.  It has little to no overhead for  
> collection points that are not collecting data.  Emulating that  
> behavior allows you to test what you fly and fly what you test.
> 3. Having the ability to only get trace data you want (or need)  
> instead of trace data for every instruction executed is very  
> useful.  It also reduces bandwidth requirements when archiving the  
> traces, or shipping them out over a network connection.
> 4. The ability to dynamically expand and contract the tracing scope  
> during a trace is vital to getting the right data.
>
> The general plan would be to provide collectors in all of the  
> public python API functions.  The filtering code would also be in  
> the local system, for speed and bandwidth-conserving purposes.  The  
> filters should generally be native code.  The data should be  
> writeable to a file or to a network socket.  In addition, there  
> should be a network socket listening for commands from a tracing  
> client.  The client would be able to upload additional filter  
> scripts and start or stop tracing transparently to the running source.
>
> For security there should be an authentication mechanism that  
> allows the application to decide whether or not a connection to the  
> trace facility should be allowed, and a way to disable the trace  
> listening port on startup.  (Or perhaps it should be disabled on  
> startup by default and enabled if so desired.)
>
> Finally, there should, of course, be Pythonic access to the trace  
> system.
>
> The essential differences between the current tracing system and  
> the proposal involve the selectable granularity, the transparent  
> remote access, and automatic triggering of collection points.
>
> Comments? Please make sure to reply to all, I am not subscribed to  
> the list.

I've recently starting thinking of something along these lines  
although I don't the need to alter existing libraries or even mimic  
Dtrace given Python's extremely dynamic nature and reflection  
capabilities.  Ian Bicking wrote something along these lines for  
Paste that is used in Pylons wherein exceptions raised by the  
application during debug mode drop you into an interactive debugger  
with a web interface -- very handy for developing webapps.

This got me thinking about building a module that could be included  
by projects that creates a socket and responds to messages on that  
socket in a separate thread from the main app so that you can connect  
to the app and explore its current state.  Take a look at the  
evalexception module in Paste to see what he does.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From chris.lyon at spritenote.co.uk  Wed Oct 31 14:03:32 2007
From: chris.lyon at spritenote.co.uk (wyleu)
Date: Wed, 31 Oct 2007 11:03:32 -0700
Subject: _tkinter installation in python 2.5 on mandriva with a default 2.4
In-Reply-To: <4728afce$0$7845$9b622d9e@news.freenet.de>
References: <1193775761.764547.148730@i38g2000prf.googlegroups.com>
	<4727b1e6$0$13390$9b622d9e@news.freenet.de>
	<1193813238.978699.154830@57g2000hsv.googlegroups.com>
	<47288E4D.6010301@v.loewis.de>
	<1193847896.441329.315560@o80g2000hse.googlegroups.com>
	<4728afce$0$7845$9b622d9e@news.freenet.de>
Message-ID: <1193853812.998544.113780@y27g2000pre.googlegroups.com>


> tk.h is searched-for in detect_tkinter. Check whether tklib, tcllib,
> tcl_includes and tk_includes all get set. This should take only
> a single print statement.
>
> Regards,
> Martin

Ok I've cleared my increasingly frantic copies out

[root at localhost python2.5]# find / -name tk.h
/usr/include/tk.h
/usr/include/tk8.4.13/generic/tk.h

The slightly more verbose setup.py now reports

lib_dir:['/usr/local/lib', '/lib64', '/usr/lib64', '/lib', '/usr/lib']
Inc_dir: ['./Include', '.', '/usr/local/include', '/home/chris/
Python-2.5.1/Include', '/home/chris           /Python-2.5.1', '/usr/
include']
 Those TK libraries  tcllib=None tklib=None tcl_includes=None
tk_includes=None
INFO: Can't locate Tcl/Tk libs and/or headers

I don't understand why the headers report None as the file tk.h is
in   /usr/include ... or is the lack of the word generic more of a
problem?

I also can't work out what the name of the actual libraries are: which
doesn't help much.

The fact that None is reported for everything is a bit confusing.






From nick at craig-wood.com  Sat Oct  6 14:30:13 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Sat, 06 Oct 2007 13:30:13 -0500
Subject: Cross platform way of finding number of processors on a machine?
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<1i5k9kn.kxih581ipiy0sN%raims@dot.com>
Message-ID: <slrnfgfjhu.5uu.nick@irishsea.home.craig-wood.com>

Lawrence Oluyede <raims at dot.com> wrote:
>  John <weekender_ny at yahoo.com> wrote:
> > Is there a way to find the number of processors on a machine (on linux/
> > windows/macos/cygwin) using python code (using the same code/cross
> > platform code)?
> 
>  From processing <http://cheeseshop.python.org/pypi/processing/0.34> :
> 
>  def cpuCount():
>      '''
>      Returns the number of CPUs in the system
>      '''
>      if sys.platform == 'win32':
>          try:
>              num = int(os.environ['NUMBER_OF_PROCESSORS'])
>          except (ValueError, KeyError):
>              pass
>      elif sys.platform == 'darwin':
>          try:
>              num = int(os.popen('sysctl -n hw.ncpu').read())
>          except ValueError:
>              pass
>      else:
>          try:
>              num = os.sysconf('SC_NPROCESSORS_ONLN')
>          except (ValueError, OSError, AttributeError):
>              pass
>          
>      if num >= 1:
>          return num
>      else:
>          raise NotImplementedError


There is a bug in that code...

NotImplementedError will never be raised because num won't have been
set.  It will raise "UnboundLocalError: local variable 'num'
referenced before assignment" instead

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From jzgoda at o2.usun.pl  Mon Oct 22 04:14:13 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Mon, 22 Oct 2007 10:14:13 +0200
Subject: dynamic invoke
In-Reply-To: <mailman.218.1192808101.13605.python-list@python.org>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>	<mailman.213.1192804759.13605.python-list@python.org>	<5nrvdoFjmq4tU1@mid.uni-berlin.de>
	<mailman.218.1192808101.13605.python-list@python.org>
Message-ID: <ffhm6h$7hv$1@atlantis.news.tpi.pl>

Sushant napisa?(a):

> getattr seems to be converting string into function pointer and I am just 
> saying that string cannot be used as a function pointer in Python as may be 
> in PHP.

It seems, but it does not. Getattr performs lookup on object's
attributes dict, it does not "convert" anything. The abstraction of
"function pointer" is also wrong here, it's a reference to an object
(any object, not just function). The result might seems similar, but
works quite differently.

-- 
Jarek Zgoda
Skype: jzgoda | GTalk: zgoda at jabber.aster.pl | voice: +48228430101

"We read Knuth so you don't have to." (Tim Peters)


From carsten at uniqsys.com  Tue Oct 23 13:20:30 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Tue, 23 Oct 2007 13:20:30 -0400
Subject: Life-time of temporary variables in list comprehensions
In-Reply-To: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
References: <1193158968.578330.204710@t8g2000prg.googlegroups.com>
Message-ID: <1193160030.3380.42.camel@dot.uniqsys.com>

On Tue, 2007-10-23 at 17:02 +0000, beginner wrote:
> Hi All,
> 
> If I have a list comprehension:
> 
> ab=["A","B"]
> c = "ABC"
> [1.0 if c=='A' else c='B' for c in ab]

"c='B'" is invalid syntax. Maybe you mean "c=='B'". That doesn't make
much sense, but at least it's correct syntax.

> print c
> 
> >>"B"
> 
> My test shows that if c is not defined before the list comprehension,
> it will be created in the list comprehension; if it is defined before
> the list comprehension, the value will be overwritten. In other words,
> temp variables are not local to list comprehensions.
> 
> My question is why is this and is there any way to make c local to
> list comp?

The only way to keep c from being overwritten currently is to avoid
using a list comprehension. Generator expressions don't "leak" their
iteration variable to the outside, so you can write this instead:

list(1.0 if c=='A' else c=='B' for c in ab)

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From jcd at sdf.lonestar.org  Mon Oct  8 16:23:26 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 8 Oct 2007 16:23:26 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191874352.380018.216090@k79g2000hse.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
Message-ID: <20071008202326.GA967@sdf.lonestar.org>

On Mon, Oct 08, 2007 at 01:12:32PM -0700, mensanator at aol.com wrote regarding Re: pytz has so many timezones!:
>  [ I wrote ]
> > Reducing them to a single time zone will result in aberrant functionality in one or more locales.
> 
> I would hardly think that's an issue on the user registration
> form the OP is trying to create.
> 

You don't think that it's an issue that the OPs users will complain about their time being inaccurate?  If I register in what we in the US call Eastern Time Zone, I don't want to have to switch to Atlantic time zone just because the form designer couldn't be bothered to include a time zone that actually matched the function of the clocks in my area.  

Pedantry about the definition of a time zone is not going to win you points with irate users.  

Cliff


From torriem at chem.byu.edu  Fri Oct 26 16:26:24 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Fri, 26 Oct 2007 14:26:24 -0600
Subject: tuples within tuples
In-Reply-To: <1193428719.253120.207320@22g2000hsm.googlegroups.com>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>	<1193403264.666264.113710@o38g2000hse.googlegroups.com>	<5oe73cFmh2htU1@mid.uni-berlin.de>	<1193407191.002389.17680@v3g2000hsg.googlegroups.com>	<13i48kmfbjstm53@corp.supernews.com>
	<1193428719.253120.207320@22g2000hsm.googlegroups.com>
Message-ID: <47224D70.7030902@chem.byu.edu>

korovev76 at gmail.com wrote:
> On 26 Ott, 19:23, Dennis Lee Bieber <wlfr... at ix.netcom.com> wrote:
>  > > (A,B,C,D)
>>> that could be
>>> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)
>>         "C" isn't a tuple in your example either. It is a one-element list
>> (the single element INSIDE the list is a tuple whose third element is a
>> list containing a non-terminated string -- so the entire structure is
>> invalid)
>>
> 
> i'm not sure what u mean with "the entire structure is invalid"...
> that's exactly what I got while parsing...

Your structure is correct.  Dennis just didn't read all the matching
parens and brackets properly.

> 
> 


-- 
Michael Torrie
Assistant CSR, System Administrator
Chemistry and Biochemistry Department
Brigham Young University
Provo, UT 84602
+1.801.422.5771



From zzz at zzzzzz.zzz  Fri Oct  5 21:54:20 2007
From: zzz at zzzzzz.zzz (__BMR__)
Date: Sat, 06 Oct 2007 01:54:20 GMT
Subject: Need a minimal, easily-modifiable HTTP proxy
Message-ID: <gVBNi.2529$gC2.1791@trndny09>

I'm looking for a simple HTTP proxy that I can modify to fix the 
"brokenness" of a website that I use often. One aspect of the 
"brokenness" is that if I visit the site from two different tabs in my 
browser, what I do in one tab will interfere with what happens in the 
other. There are a few other minor issues I want to tweak to my liking. 
I thought a simple local proxy would give me maximum flexibility when it 
comes to the tweaking part.

http://www.xhaus.com/alan/python/proxies.html contains a list of 
potential candidates but it's difficult to get a feel of the ease of 
modification.

I'd like to hear your experience/recommendation if you have solved a 
similar problem before.

Thanks.


From laurent.pointal at limsi.fr  Mon Oct  1 03:51:59 2007
From: laurent.pointal at limsi.fr (Laurent Pointal)
Date: Mon, 01 Oct 2007 09:51:59 +0200
Subject: Fwd: Using fractions instead of floats
In-Reply-To: <mailman.1323.1191208209.2658.python-list@python.org>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>	<1191206183.441075.167450@57g2000hsv.googlegroups.com>	<52c50880709302007g4103c6c6h9b09ee376fa77998@mail.gmail.com>
	<mailman.1323.1191208209.2658.python-list@python.org>
Message-ID: <fdq8uv$ion$1@news2.u-psud.fr>

Andres Riofrio a ?crit :
<zip>
> Well, then I have
> a question: Is there a way to make 5/2 return something other than an
> integer? 

 >>> from __future__ import division
 >>> 5/2
2.5




From Scott.Daniels at Acm.Org  Sun Oct 14 01:20:38 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sat, 13 Oct 2007 22:20:38 -0700
Subject: Safely dealing with arbitrary file objects
In-Reply-To: <13h355hnfnngca6@corp.supernews.com>
References: <13h355hnfnngca6@corp.supernews.com>
Message-ID: <13h39ldkl3akecd@corp.supernews.com>

Steven D'Aprano wrote:
> I have found myself writing functions rather like these:
> 
> def openfile(filename):
>     if filename == '-':
>         # convention for shell scripts in Unix-land is to use
>         # '-' for stdin/stdout for reading/writing.
>         outfile = sys.stdout
>     if filename == '2-':
>         outfile = sys.stderr
>     else:
>         outfile = file(filename, 'w')
>     return outfile
> 
> def closefile(fileobj):
>     # don't close standard file objects, or their replacements
>     if not fileobj in (sys.stdout, sys.stderr, sys.stdin, 
>     sys.__stdout__, sys.__stderr__, sys.__stdin__):
>         fileobj.close()
> 
> 
> def processfile(filename):
>     outfile = openfile(filename)
>     try:
>         # lots of processing here, which may raise exceptions
>         var = "stuff happens"
>         outfile.write(var)
>     finally:
>         closefile(outfile)
> 
> 
> 
> A question:
> 
> I know I'm being paranoid about not closing files I shouldn't close, but 
> am I being excessively paranoid, or not paranoid enough?
> 
> Suggestions for improvements welcome; while I'm happy to read suggestions 
> using the new with statement, I can't yet rely on having Python 2.5 or 
> better so I have to stick to try...finally.

How about a wrapper that passes along all but 'close', so you don't
have to worry about closing something you means to leave open.
Something like:

     class DontCloseOutput(file):
         '''subclass file only to allow isinstance checks to work out'''
         def __init__(self, referent):
             self._actual = referent
             self.closed = False

         def close(self):
             self.closed = True

         def write(self, data):
             if self.closed:
                 raise IOError('Tried to write closed pseudo-file')
             return self._actual.write(data)


     def writeopen(filename):
         if filename == '-':
             # convention for shell scripts in Unix-land is to use
             # '-' for stdin/stdout for reading/writing.
             return DontCloseOutput(sys.stdout)
         if filename == '2-':
             return DontCloseOutput(sys.stderr)
         else:
             return open(filename, 'w')  # BTW, open is the preferred way
                                         # file was for a short time.

You of course can do similar things (probably forwarding more message)
with readopen.

-Scott David Daniels
Scott.Daniels at Acm.Org


From Florian.Lindner at xgm.de  Fri Oct 12 15:55:44 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 21:55:44 +0200
Subject: test if email
Message-ID: <feojgb$k16$01$1@news.t-online.com>

Hello,
is there a function in the Python stdlib to test if a string is a valid
email address?

Thanks,

florian


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 31 09:22:23 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 31 Oct 2007 14:22:23 +0100
Subject: py2exe (or other exe builder) on Vista system for Vista/XP
	install targets.
References: <1193832521.937425.94860@o3g2000hsb.googlegroups.com>
Message-ID: <5ordsfFo0djvU1@mid.individual.net>

Michael wrote:
[py2exe on Vista and XP]
> When I attempt to run, I get "The procedure entry point
> _except_handler4_common could not be located in the dynamic link
> library mscvrt.dll."  Apparently vista has one more
> _except_handler#_common function than XP does.

Strange -- it works for me. I compile in Vista and deploy in Vista
and XP (SP2). I'm using Twisted 2.5 and wxWidgets 2.8.

I'm sorry that I cannot help more. I dropped py2exe recently because
I had a similar missing symbol problem with a Windows 2000
computer; so I installed Python and the modules directly on all my
machines.
 
Regards,


Bj?rn

-- 
BOFH excuse #223:

The lines are all busy (busied out, that is -- why let them in to
begin with?).



From michele.simionato at gmail.com  Thu Oct 11 04:19:59 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Thu, 11 Oct 2007 08:19:59 -0000
Subject: Keeping track of subclasses and instances?
In-Reply-To: <13grcdjsmburc72@corp.supernews.com>
References: <fejpo9$vm$1@news1.carnet.hr>
	<1192077344.171261.229360@22g2000hsm.googlegroups.com>
	<13grcdjsmburc72@corp.supernews.com>
Message-ID: <1192090799.450130.143380@r29g2000hsg.googlegroups.com>

On Oct 11, 7:16 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> Is there a problem with writing C like this?
>
> class C(object):
>     def __init__(self):
>         logging.warn('Allocating resource ...')
>         self.__log = logging.warn
>     def __del__(self):
>         self.__log('De-allocating resource ...')
>         print 'THIS IS REACHED!'
>
> It works for me. Have I missed something?

Another more common workaround is to use default arguments:

class C(object):
    def __init__(self):
        logging.warn('Allocating resource ...')
    def __del__(self, warn=logging.warn):
        warn('De-allocating resource ...')
        print 'THIS IS REACHED!'

But, as you know, I want to remove __del__ because of the problem with
reference
cycles, not because of this little issue with the cleanup mechanism
(which BTW is shared
also by the weak references callback mechanism).

        Michele Simionato



From ap at profilm.dk  Wed Oct 17 04:39:31 2007
From: ap at profilm.dk (Allan Pedersen, Profilm)
Date: Wed, 17 Oct 2007 10:39:31 +0200
Subject: Automatic login to website (newbie)
Message-ID: <20071017084600.613A1E309C4@pasmtpB.tele.dk>

Did you ever find a solution for this? if so i would like to hear about
it... :-)

 

Regards

 

Allan Pedersen, Denmark

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/4a6b6ee4/attachment.html>

From arkanes at gmail.com  Tue Oct  9 11:02:47 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 10:02:47 -0500
Subject: Mixing Python and C classes in a module
In-Reply-To: <87wstwibfl.fsf@keizer.soze.com>
References: <87wstwibfl.fsf@keizer.soze.com>
Message-ID: <4866bea60710090802s1ac3fde4vb3a4d17693448383@mail.gmail.com>

On 09 Oct 2007 16:56:30 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
>
> Is it possible to mix classes defined in both Python and C in the same
> module? Ideally I would like to be able to do:
>
>  from some.module import MyPythonClass, MyCClass
>
> I guess that would mean that this would look like this on disk:
>
>  some/
>    __init__.py
>    module.py      (contains MyPythonClass)
>    module.so      (contains MyCClass)
>
> But would this work?
>

No, you'll need to make module a package, and import from (differently
named) implementation packages.


From noone at nowhere.com  Wed Oct 31 11:42:24 2007
From: noone at nowhere.com (avidfan)
Date: Wed, 31 Oct 2007 10:42:24 -0500
Subject: Help with pyparsing and dealing with null values
References: <l8uai3pu2cveg2p7tljm5vs7rit6eeglv8@4ax.com>
	<1193661926.538121.216970@o80g2000hse.googlegroups.com>
Message-ID: <6h8hi396etvdtkn8b4acq0ajpqlhq59pgq@4ax.com>

On Mon, 29 Oct 2007 05:45:26 -0700, Paul McGuire <ptmcg at austin.rr.com>
wrote:

>On Oct 29, 1:11 am, avidfan <no... at nowhere.com> wrote:
>> Help with pyparsing and dealing with null values
>>
>> I am trying to parse a log file (web.out) similar to this:
>>
>> -----------------------------------------------------------
>>
>> MBeanName: "mtg-model:Name=mtg-model_managed2,Type=Server"
>>         AcceptBacklog: 50
><snip>
>>         ExpectedToRun: false
>>         ExternalDNSName:
>>         ExtraEjbcOptions:
>>         ExtraRmicOptions:
>>         GracefulShutdownTimeout: 0
>>
>> -----------------------------------------------------------
>>
>> and I need the indented values (eventually) in a dictionary.  As you
>> can see, some of the fields have a value, and some do not.  It appears
>> that the code I have so far is not dealing with the null values and
>> colons as I had planned.
>>
>
>This is a very good first cut at the problem.  Here are some tips to
>get you going again:
>
>1. Literal("\n") wont work, use LineEnd() instead.  Literals are for
>non-whitespace literal strings.
>
>
>2. "all = SkipTo(end)" can be removed, use restOfLine instead of all.
>("all" as a variable name masks Python 2.5's "all" builtin function.)
>
>
>3. In addition to identity, you might consider defining some other
>known value types:
>
>boolean = oneOf("true false")
>boolean.setParseAction(lambda toks: toks[0]=="true")
>
>integer = Combine(Optional("-") + Word(nums))
>integer.setParseAction(lambda toks: int(toks[0]))
>
>These will do data conversion for you at parse time, so that the
>values are already in int or bool form when you access them later.
>
>
>4. The significant change is to this line (I've replaced all with
>restOfLine):
>
>pairs = Group(identity + colon + Optional(identity) + restOfLine)
>
>What gives us a problem is that pyparsing's whitespace-skipping will
>read an identity, even if it's not on the same line.  So for keys that
>have no value given, you end up reading past the end-of-line and read
>the next key name as the value for the previous key.  To work around
>this, define the value as something which must be on the same line,
>using the NotAny lookahead, which you can abbreviate using the ~
>operator.
>
>pairs = Group(identity + colon + Optional(~end + (identity |
>restOfLine) ) + end )
>
>If we add in the other known value types, this gets a bit unwieldy, so
>I recommend you define value separately:
>
>value = boolean | integer | identity | restOfLine
>pairs = Group(identity + colon + Optional(~end + value) + end )
>
>At this point, I think you have a working parser for your log data.
>
>
>5. (Extra Credit) Lastly, to create a dictionary, you are all set to
>just add pyparsing's Dict class.  Change:
>
>logEntry = MBeanName + ServerName("servername") + OneOrMore(pairs)
>
>to:
>
>logEntry = MBeanName + ServerName("servername") +
>Dict(OneOrMore(pairs))
>
>(I've also removed ".setResultsName", using the new shortened form for
>setting results names.)
>
>Dict will return the parsed tokens as-is, but it will also define
>results names using the tokens[0] element of each list of tokens
>returned by pairs - the values will be the tokens[1:], so that if a
>value expression contains multiple tokens, they all will be associated
>with the results name key.
>
>Now you can replace the results listing code with:
>
>    for t in tokens:
>       print t
>
>with
>
>    print tokens.dump()
>
>And you can access the tokens as if they are a dict, using:
>
>    print tokens.keys()
>    print tokens.values()
>    print tokens["ClasspathServletDisabled"]
>
>If you prefer, for keys that are valid Python identifiers (all of
>yours appear to be), you can just use object.attribute notation:
>
>    print tokens.ClasspathServletDisabled
>
>Here is some sample output, using dump(), keys(), and attribute
>lookup:
>
>tokens.dump() -> ['MBeanName:', '"mtg-model:Name=mtg-
>model_managed2,Type=Server"', ['AcceptBacklog', 50],
>['AdministrationPort', 0], ['AutoKillIfFailed', False],
>['AutoRestart', True], ['COM', 'mtg-model_managed2'], ['COMEnabled',
>False], ['CachingDisabled', True], ['ClasspathServletDisabled',
>False], ['ClientCertProxyEnabled', False], ['Cluster', 'mtg-model-
>cluster'], ['ClusterRuntime', 'mtg-model-cluster'], ['ClusterWeight',
>100], ['CompleteCOMMessageTimeout', -1],
>['CompleteHTTPMessageTimeout', -1], ['CompleteIIOPMessageTimeout',
>-1], ['CompleteMessageTimeout', 60], ['CompleteT3MessageTimeout', -1],
>['CustomIdentityKeyStoreFileName'],
>['CustomIdentityKeyStorePassPhrase'],
>['CustomIdentityKeyStorePassPhraseEncrypted'],
>['CustomIdentityKeyStoreType'], ['CustomTrustKeyStoreFileName'],
>['CustomTrustKeyStorePassPhrase'],
>['CustomTrustKeyStorePassPhraseEncrypted'],
>['CustomTrustKeyStoreType'], ['DefaultIIOPPassword'],
>['DefaultIIOPPasswordEncrypted'], ['DefaultIIOPUser'],
>['DefaultInternalServletsDisabled', False], ['DefaultProtocol', 't3'],
>['DefaultSecureProtocol', 't3s'], ['DefaultTGIOPPassword'],
>['DefaultTGIOPPasswordEncrypted', ' ****** '], ['DefaultTGIOPUser',
>'guest'], ['DomainLogFilter'], ['EnabledForDomainLog', True],
>['ExecuteQueues', 'weblogic.kernel.Default,foglight'],
>['ExpectedToRun', False], ['ExternalDNSName'], ['ExtraEjbcOptions'],
>['ExtraRmicOptions'], ['GracefulShutdownTimeout', 0]]
>- AcceptBacklog: 50
>- AdministrationPort: 0
>- AutoKillIfFailed: False
>- AutoRestart: True
>- COM: mtg-model_managed2
>- COMEnabled: False
>- CachingDisabled: True
>- ClasspathServletDisabled: False
>- ClientCertProxyEnabled: False
>- Cluster: mtg-model-cluster
>- ClusterRuntime: mtg-model-cluster
>- ClusterWeight: 100
>- CompleteCOMMessageTimeout: -1
>- CompleteHTTPMessageTimeout: -1
>- CompleteIIOPMessageTimeout: -1
>- CompleteMessageTimeout: 60
>- CompleteT3MessageTimeout: -1
>- CustomIdentityKeyStoreFileName:
>- CustomIdentityKeyStorePassPhrase:
>- CustomIdentityKeyStorePassPhraseEncrypted:
>- CustomIdentityKeyStoreType:
>- CustomTrustKeyStoreFileName:
>- CustomTrustKeyStorePassPhrase:
>- CustomTrustKeyStorePassPhraseEncrypted:
>- CustomTrustKeyStoreType:
>- DefaultIIOPPassword:
>- DefaultIIOPPasswordEncrypted:
>- DefaultIIOPUser:
>- DefaultInternalServletsDisabled: False
>- DefaultProtocol: t3
>- DefaultSecureProtocol: t3s
>- DefaultTGIOPPassword:
>- DefaultTGIOPPasswordEncrypted:  ******
>- DefaultTGIOPUser: guest
>- DomainLogFilter:
>- EnabledForDomainLog: True
>- ExecuteQueues: weblogic.kernel.Default,foglight
>- ExpectedToRun: False
>- ExternalDNSName:
>- ExtraEjbcOptions:
>- ExtraRmicOptions:
>- GracefulShutdownTimeout: 0
>- servername: "mtg-model:Name=mtg-model_managed2,Type=Server"
>
>tokens.keys() -> ['ClasspathServletDisabled', 'servername',
>'ExternalDNSName', 'CustomTrustKeyStoreFileName', 'DefaultIIOPUser',
>'ExpectedToRun', 'CachingDisabled', 'CompleteHTTPMessageTimeout',
>'CompleteIIOPMessageTimeout', 'AutoKillIfFailed',
>'ClientCertProxyEnabled', 'ExtraEjbcOptions',
>'CustomTrustKeyStorePassPhraseEncrypted', 'COM',
>'CompleteMessageTimeout', 'CustomIdentityKeyStoreType',
>'CustomTrustKeyStoreType', 'EnabledForDomainLog', 'AutoRestart',
>'DefaultTGIOPPasswordEncrypted', 'CompleteCOMMessageTimeout',
>'DefaultInternalServletsDisabled', 'DefaultProtocol', 'ClusterWeight',
>'ExecuteQueues', 'ExtraRmicOptions', 'CompleteT3MessageTimeout',
>'DefaultTGIOPUser', 'AcceptBacklog', 'DefaultIIOPPassword',
>'DefaultSecureProtocol', 'COMEnabled',
>'CustomIdentityKeyStoreFileName', 'DefaultTGIOPPassword',
>'CustomIdentityKeyStorePassPhraseEncrypted',
>'GracefulShutdownTimeout', 'DefaultIIOPPasswordEncrypted',
>'CustomIdentityKeyStorePassPhrase', 'ClusterRuntime', 'Cluster',
>'DomainLogFilter', 'CustomTrustKeyStorePassPhrase',
>'AdministrationPort']
>
>tokens.ClasspathServletDisabled -> False
>
>
>Cheers,
>-- Paul
>

Thanks, Paul!  That's exactly what I needed!



From mccredie at gmail.com  Tue Oct 23 19:43:39 2007
From: mccredie at gmail.com (Matimus)
Date: 23 Oct 2007 16:43:39 -0700
Subject: Pythonw.exe exits prematurely
In-Reply-To: <1193176910.507794.136960@y27g2000pre.googlegroups.com>
References: <1193176910.507794.136960@y27g2000pre.googlegroups.com>
Message-ID: <1193178936.407815.146200@z24g2000prh.googlegroups.com>

> I am running WinXP SP2 with Python 2.5.1 and encountered the following
> issue:
>
> I wrote a script that logs into my mail server, and checks for new
> messages every 20 seconds. When a new message is found, it displays a
> Windows tool tip and prints a line to console indicating a new
> message.
>
> When I run the script with python.exe (console), the script runs fine
> and checks for new messages in perpetuity (as it should). However,
> when I run the script with pythonw.exe (no console), the script
> prematurely exits after 10 or 15 minutes. For those 15 minutes, it
> works as it should, displaying tool tips when new messages arrive.
> Furthermore, when it exits prematurely, it appears to be exiting
> gracefully (I have an exit routine that logs out of the mail server
> and cleans up).
>
> Does anyone know why this might be the case? The lines printed to
> console are purely for diagnostic purposes. Otherwise, the two
> processes should be identical.

You say it exits gracefully, I'm not sure I know what you mean. My
guess is that you are writing to stdout, and when the buffer fills up
and tries to dump the program exits with an exception (but returns
0).

I've run into something similar before, you can reproduce it with
this:
[code]
import sys

f2 = open("bo.err", "w")
sys.stderr = f2
for i in range(10000):
    print i
[/code]

Run with pythonw then look at "bo.err" to see the exception.

You can either stop printing to stdout and send the stuff somewhere
else (maybe use the logging module), or you can assign stdout and
stderr to nul.

[code]
import sys
import os

nul = open(sys.devnull,'w')
sys.stdout = nul
sys.stderr = nul

# The rest of your code
[/code]

Matt



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 15 19:07:34 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 15 Oct 2007 23:07:34 -0000
Subject: Order of tuples in dict.items()
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
	<13h55uj8pogd4ea@corp.supernews.com>
	<mailman.22.1192459653.13605.python-list@python.org>
	<1192482687.653615.182140@v29g2000prd.googlegroups.com>
Message-ID: <13h7slmtjcskk88@corp.supernews.com>

On Mon, 15 Oct 2007 14:11:27 -0700, John Machin wrote:

> On Oct 16, 12:47 am, Erik Jones <e... at myemma.com> wrote:
> 
>> Not between two consecutive reads, no.  However, after any resizing of
>> a dict the result of Python's hash function for any given newly
>> inserted key is extremely likely to be different than it would have
>> been before the resizing, i.e. the method may be the same, but the
>> result is different.
> 
> Could you please supply the basis for the above assertion? My reading of
> the docs for the built-in hash function, the docs for an object's
> __hash__ method, and the source (dictobject.c, intobject.c,
> stringobject.c) indicate (as I would have expected) that the hash of an
> object is determined solely by the object itself, not by the history of
> insertion into a dict (or multiple dicts!?).
> 
> Note that position_in dict = some_function(hash(obj), size_of_dict) ...
> perhaps you are conflating two different concepts.


The hash() function doesn't even take a dictionary as an argument -- it 
simply can't be dependent on the history of insertions into the 
dictionary, because it can't know what dictionary to look at!

But as you say, the position in the dictionary itself depends on the 
result of the hash function, and the size of the dictionary, and what's 
already in the dict (that is to say, the history of insertions and 
deletions). That's how hash tables work.



-- 
Steven.


From zzbbaadd at aol.com  Wed Oct 31 16:57:37 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Wed, 31 Oct 2007 13:57:37 -0700
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <1193843464.345398.94430@k35g2000prh.googlegroups.com>
References: <mailman.678.1193840121.13605.python-list@python.org>
	<1193843464.345398.94430@k35g2000prh.googlegroups.com>
Message-ID: <1193864257.538927.215460@v3g2000hsg.googlegroups.com>

On Oct 31, 8:11 am, Carl Banks <pavlovevide... at gmail.com> wrote:

>
> string.find has always been kind of a wart in Python; that's why
> they're getting rid of it.  For testing for the presence of a
> substring, use the in operator:


Per the Python 3000 presentation given by Guido Van Rossum at
PyCon February 2007, the new Bytes type will have a "wart".

"Has some string-like methods, e.g. .find()"




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 12:04:38 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 18:04:38 +0200
Subject: Newbie packages Q
In-Reply-To: <1191771348.165051.36790@50g2000hsm.googlegroups.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
Message-ID: <47090370$0$32758$426a74cc@news.free.fr>

MarkyMarc a ?crit :
(snip)
> It was simply to make a point. But then lets say the to files looks
> like this:
> 
>  *******************************
> atest.py:
> 
> def printA():
>         print "This is Atest from Apack"
> *******************************
> btest.py:
> from Test.apack import atest


FWIW, better to stick to all_lower names for packages and modules.

> def printB():
>         print "This is Btest from Bpack"
> 
> def printatest():
>         print atest.printA()
> 
> print printB()
> print printatest()
> *******************************
> 
> Now only one of them imports the other, and this most be the simplest
> way of illustrating the intra-package references.
 >
> But how do I get this to work?

You failed to specify how your files are organized, and what is "not 
working".

But anyway, if
- atest.py is in <wherever>/Test/apack,
- both Test and apack have a __init__.py
- <wherever> is in the sys.path,

then this should just work AFAICT.



From alainpoint at yahoo.fr  Tue Oct  2 09:15:57 2007
From: alainpoint at yahoo.fr (alain)
Date: Tue, 02 Oct 2007 13:15:57 -0000
Subject: I earn $36800 a month with google adsense
In-Reply-To: <1191289294.449262.234020@r29g2000hsg.googlegroups.com>
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
	<1191240372.428917.253350@o80g2000hse.googlegroups.com>
	<1191289294.449262.234020@r29g2000hsg.googlegroups.com>
Message-ID: <1191330957.461057.313830@k79g2000hse.googlegroups.com>

On 2 okt, 03:41, panguohua <panguohual... at sina.com> wrote:
> On 10 1 ,   8 06 , panguohua <panguohual... at sina.com> wrote:
>
> > On 10 1 ,   1 13 , panguohua <panguohual... at sina.com> wrote:
>
> > >www.space666.com
>
> > > a good website for making money with your blog.more information there
>
> > support!!!!!!!!!!!!!!!!!!!!!
> > !!!!!!!!!!!!!!!!!!!!!!!!!
>
> good

Wow ! I have a question though.

If you really make $38600 a month, how come you even bother to spam
us?

Alain



From no at spam.com  Tue Oct 30 15:26:05 2007
From: no at spam.com (Farshid Lashkari)
Date: Tue, 30 Oct 2007 12:26:05 -0700
Subject: simple? embedding question
In-Reply-To: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
Message-ID: <4727854D.3050201@spam.com>

sndive at gmail.com wrote:
> suppose i have imported two modules foo and bar with
> foo=PyImport_ImportModule("foo") and bar=PyImport_ImportModule("bar")
> respectively.
> 
> Now suppose I have an artitrary python expression to evaluate.
> Do I need to parse that thring and check for foo. and bar. before
> jumping the usual
> PyModule_GetDict,PyDict_GetItemString,PyObject_CallObject hoop hoop on
> the PyObject for
> the prefix or there is a better way?
> 
> btw PyRun_SimpleString("foo.baz()"); does not work:
>  Traceback (most recent call last):
>   File "<string>", line 1, in ?
> NameError: name 'foo' is not defined
> 
> and i potentially need a PyObject* back with the result of the
> expression anyway.
> 

I believe the problem is that you are not importing the "foo" and "bar" 
modules into the __main__ scope. Try using PyImport_ImportModuleEx, 
which will allow you to specify the global scope to import the module 
into. For example, to import the modules into the __main__ scope you 
could do the following:

PyObject* mainmod = PyImport_AddModule("__main__");
PyObject* maindict = PyModule_GetDict(mainmod);

foo = PyImport_ImportModuleEx("foo", maindict , maindict , NULL);
bar = PyImport_ImportModuleEx("bar", maindict , maindict , NULL);

Once the modules are imported into the __main__ scope, you should be 
able to use PyRun_SimpleString() to evaluate expressions.

-Farshid


From jzgoda at o2.usun.pl  Fri Oct 19 15:49:59 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Fri, 19 Oct 2007 21:49:59 +0200
Subject: How to use module audit-lib ?
In-Reply-To: <4718becc$0$21146$7a628cd7@news.club-internet.fr>
References: <4718becc$0$21146$7a628cd7@news.club-internet.fr>
Message-ID: <47190A67.2060004@o2.usun.pl>

S?bastien Weber napisa?(a):

> I've installed the python-audit-lib module but there's no documentation.
> Does someone know how to use it ?

I don't know this package, but why did you install it? Maybe somebody in
?berwald knows its usage?

-- 
Jarek Zgoda
http://jpa.berlios.de/


From steven.bethard at gmail.com  Sun Oct  7 14:48:45 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 07 Oct 2007 12:48:45 -0600
Subject: Problem of Readability of Python
In-Reply-To: <1191782696.538929.289770@22g2000hsm.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<1191782696.538929.289770@22g2000hsm.googlegroups.com>
Message-ID: <dqadneL6Mp-Qt5TanZ2dnUVZ_sbinZ2d@comcast.com>

George Sakkis wrote:
> On Oct 7, 2:14 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
>> Licheng Fang wrote:
>>> Python is supposed to be readable, but after programming in Python for
>>> a while I find my Python programs can be more obfuscated than their C/C
>>> ++ counterparts sometimes. Part of the reason is that with
>>> heterogeneous lists/tuples at hand, I tend to stuff many things into
>>> the list and *assume* a structure of the list or tuple, instead of
>>> declaring them explicitly as one will do with C structs. So, what used
>>> to be
>>> struct nameval {
>>>     char * name;
>>>    int val;
>>> } a;
>>> a.name = ...
>>> a.val = ...
>>> becomes cryptic
>>> a[0] = ...
>>> a[1] = ...
>>> Python Tutorial says an empty class can be used to do this. But if
>>> namespaces are implemented as dicts, wouldn't it incur much overhead
>>> if one defines empty classes as such for some very frequently used
>>> data structures of the program?
>>> Any elegant solutions?
>> You can use __slots__ to make objects consume less memory and have
>> slightly better attribute-access performance. Classes for objects that
>> need such performance tweaks should start like::
>>
>>      class A(object):
>>          __slots__ = 'name', 'val'
>>
>> The recipe below fills in the obvious __init__ method for such classes
>> so that the above is pretty much all you need to write:
>>
>>      http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502237
> 
> For immutable records, you may also want to check out the named tuples
> recipe: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/500261

Yep, it's linked in the description of the first recipe.

STeVe


From kalbrun.pawel at gmail.com  Tue Oct 30 08:47:01 2007
From: kalbrun.pawel at gmail.com (clbr)
Date: Tue, 30 Oct 2007 12:47:01 -0000
Subject: Readline and record separator
In-Reply-To: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
Message-ID: <1193748421.839664.85920@22g2000hsm.googlegroups.com>

On Oct 30, 12:21 pm, Johny <pyt... at hope.cz> wrote:
> Is it possible to change record separator when using readline?
> As far as I know readline reads characters until found '\n' and it is
> the end of record for readline.
> My problem is that my record consits several '\n' and when I use
> readline it does NOT read the whole my record.
> So If I could change '\n' as  a record separator for readline, it
> would solve my problem.
> Any idea?
> Thank you
> L.

I'm not aware any such a method. But what you could do is simply read
all of them(readlines()) and then split it(delimeter would be your new
line)



From mathieu.malaterre at gmail.com  Thu Oct 18 12:00:39 2007
From: mathieu.malaterre at gmail.com (mathieu)
Date: Thu, 18 Oct 2007 16:00:39 -0000
Subject: strptime and microseconds
Message-ID: <1192723239.854957.257280@v29g2000prd.googlegroups.com>

Hi there,

  I am trying to use strptime to parse my microseconds but I was not
able the documentation for it. The only list I found was:

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

 So I can get seconds with %S, but nowhere is there a microsecond
symbol...

Thanks for pointer to doc,
-Mathieu


s1 = "20070619"
s2 = "150348.62"
s = s1+s2
d = datetime(*strptime(s, "%Y%m%d%H%M%S.%?"))



From amdescombes at spad.eu  Fri Oct 12 09:36:24 2007
From: amdescombes at spad.eu (amdescombes)
Date: Fri, 12 Oct 2007 15:36:24 +0200
Subject: Memory Problems in Windows 2003 Server
Message-ID: <470f7857$0$27795$426a74cc@news.free.fr>

Hi,

I am using Python 2.5.1
I have an application that reads a file and generates a key in a 
dictionary for each line it reads. I have managed to read a 1GB file and 
generate more than 8 million keys on an Windows XP machine with only 1GB 
of memory and all works as expected. When I use the same program on a 
Windows 2003 Server with 2GB of RAM I start getting MemoryError exceptions!
I have tried setting the IMAGE_FILE_LARGE_ADDRESS_AWARE on both 
Python.exe and Python25.dll and setting the /3GB flag on the boot.ini 
file to no avail. I still get the MemoryError exceptions.

Has anybody encountered this problem before?

Thanks in advance for any ideas/suggestions.

Best Regards,

Andr? M. Descombes


From kyrie at uh.cu  Wed Oct 31 11:34:06 2007
From: kyrie at uh.cu (Luis Zarrabeitia)
Date: Wed, 31 Oct 2007 15:34:06 +0000
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <loom.20071031T132748-928@post.gmane.org>
References: <loom.20071031T132748-928@post.gmane.org>
Message-ID: <1193844846.4728a06e52cb8@comuh.uh.cu>


> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found, 
> should't the .find method return 0 rather than -1?

I belive str.find should return the first position where the substring appears.
If "string".find("ugh") were to return 0, how would you differentiate from
"ugh".find("ugh")? That one *should* return 0.


> this breaks the 
> 
> if check.find('something'):
>     do(somethingElse)
> 
> idiom, which is a bit of a pity I think.

It breaks the idiom because you are speaking the wrong language.

You should be doing:

if "something" in "string":
    do(something())

wich is clearer IMHO.
 
> cheers,
> 
> -jelle

See ya,

-- 
Luis Zarrabeitia
Facultad de Matem?tica y Computaci?n, UH
http://profesores.matcom.uh.cu/~kyrie

 


> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 

--
"Al mundo nuevo corresponde la Universidad nueva"
UNIVERSIDAD DE LA HABANA
280 aniversario 


From mail at timgolden.me.uk  Mon Oct 22 11:45:17 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Mon, 22 Oct 2007 16:45:17 +0100
Subject: Iteration for Factorials
In-Reply-To: <Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<5o3jalFl0n43U1@mid.uni-berlin.de>	<1193056647.416562.36150@q3g2000prf.googlegroups.com>	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>	<1193057676.680959.71780@v23g2000prn.googlegroups.com>	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
Message-ID: <471CC58D.3040501@timgolden.me.uk>

Marco Mariani wrote:
>  From the cookbook, this time.
> It satisfies the requirements nicely  ;)
> 
> 
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691
> 

[... snip the ultimate general-purpose answer to the OP's question ...

I really hope that's a wink up there, Marco. The poor guy
was just trying to get his homework done!

:>

TJG


From gherzig at fmed.uba.ar  Thu Oct  4 16:05:58 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Thu, 04 Oct 2007 17:05:58 -0300
Subject: migrating to packages
In-Reply-To: <47045b29$0$11005$4c368faf@roadrunner.com>
References: <4703C661.50009@fmed.uba.ar>	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>	<mailman.1488.1191461205.2658.python-list@python.org>
	<47045b29$0$11005$4c368faf@roadrunner.com>
Message-ID: <470547A6.5010405@fmed.uba.ar>


>
>  
>
>>>On Oct 3, 2007, at 11:42 AM, Gerardo Herzig wrote:
>>>
>>>      
>>>
>>>>Hi all. I have a single file with several classes, wich i want to
>>>>separate into several packages.
>>>>The big file is named, say MYCLASES, and contains a class named
>>>>A(object), and B(A).
>>>>
>>>>We have been using this MYCLASES in the from MYCLASES import B syntax,
>>>>but i cant reproduce this syntax using packages. Im forced to write
>>>>from PACKAGE.B import *, and if that means
>>>>i have to touch so many files, that would really be a problem to me.
>>>>There is (i cant find it yet) a place where i can read about that kind
>>>>of package 'migration' situation?
>>>>
>>>>Because i *really* want to keep the FROM PACKAGE import B syntax.
>>>>        
>>>>
>>>http://www.python.org/doc/current/tut/
>>>node8.html#SECTION008400000000000000000
>>>      
>>>
>>I have already read those files (and i just read it again), but still
>>cant find the solution. Maybe i just do not explain myself in the
>>correct way (or  i am very very stupid :)
>>I will expose my case quicly.
>>The MYCLASES.py file contains the A class, so i can use from MYCLASES
>>import A
>>a = ()
>>
>>Using the "package mode" (wich looks fine BTW), having the simple
>>MYCLASES/
>>     __init__.py
>>     A.py
>>
>>forces my (i guess) to use the
>>from MYCLASES.A import A
>>
>>which is not what i want, because the big amount of files i will have to
>>modify (and im not alones, there is a group of dudes who use this
>>MYCLASES)
>>
>>Im i missing something in that docs you post? Thanks!!
>>    
>>
>
>Add these lines in __init__.py:
>
>from MYCLASSES.A import A
>from MYCLASSES.B import B
>  
>
Ummm, that works indeed, but forces me to import all (more than A and B) 
classes, rigth?
Gerardo.


From Scott.Daniels at Acm.Org  Sat Oct 13 16:56:56 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sat, 13 Oct 2007 13:56:56 -0700
Subject: Problem of Readability of Python
In-Reply-To: <mailman.60.1192066092.927.python-list@python.org>
References: <mailman.60.1192066092.927.python-list@python.org>
Message-ID: <13h2c4vmoumkd63@corp.supernews.com>

Delaney, Timothy (Tim) wrote:
> Licheng Fang wrote:
> 
>> This is enlightening. Surely I shouldn't have worried too much about
>> performance before doing some measurement.
> 
> And with that statement you have truly achieved enlightenment.
> Or to put it another way ... performance tuning without profiling is a
> waste of time.

And the performance of a programmer both with and without excessive
early performance tweaking has been measured time and again (we do that
particular experiment _way_ too often).  The early performance tweaking
version loses almost every time.

-Scott


From bignose+hates-spam at benfinney.id.au  Mon Oct  1 00:06:12 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 01 Oct 2007 14:06:12 +1000
Subject: Editor extensions to get a full IDE (was: An Editor that Skips to the
	End of a Def)
References: <ffxIi.686$6p6.510@newssvr25.news.prodigy.net>
	<87odfxjn16.fsf@rudin.co.uk>
	<oKxIi.27994$eY.18915@newssvr13.news.prodigy.net>
	<87hclpjm3a.fsf@rudin.co.uk>
	<tfAIi.51111$Um6.44314@newssvr12.news.prodigy.net>
	<YPGIi.54591$YL5.26012@newssvr29.news.prodigy.net>
	<874phou1pa.fsf@benfinney.id.au>
	<46f3717e$0$29940$426a74cc@news.free.fr>
Message-ID: <873awvzdfv.fsf_-_@benfinney.id.au>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> writes:

> Ben Finney a ?crit :
> > Both Emacs and Vim are highly customisable text editors. They are
> > configurable with complete programming languages specific to the
> > program, and both have a huge community of programmers writing
> > useful extensions.
> 
> FWIW, emacs has
> [...]
> - ECB (emacs-code-browser), that adds a file explorer and
> functions/classes inspector

Thank you very much for making me aware of this amazing tool. I've now
been using it for a couple of weeks, and not only does it work
smoothly with Python, it works smoothly with loads of other source
file formats, such as targets in a Makefile or changelog entries.

This is really important, because developing programs is much more
than just editing files in one language. A "python IDE" is all well
and good, but it's much better to have a solid generic text editor
that can be extended by the community.

When the editor supports hundreds of common (and less-common) file
syntaxes that are associated with programming, the job becomes that
much more streamlined. I had become accustomed to this with syntax
highlighting, but I'm very pleased to see that ECB has a similarly
broad support for organising and browsing the variety of file syntaxes
I'm likely to be editing when developing with Python.

It also goes without saying that it's great to have all this with
*optional* GUI support; it all works just the same when I'm connecting
to a text terminal remotely over a slow link.

Talk about "huge community of programmers writing useful
extensions". Wow.

What's the equivalent in the Vim world?

-- 
 \                 "He who laughs last, thinks slowest."  -- Anonymous |
  `\                                                                   |
_o__)                                                                  |
Ben Finney


From bignose+hates-spam at benfinney.id.au  Tue Oct 16 22:28:18 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 17 Oct 2007 12:28:18 +1000
Subject: why doesn't have this list a "reply-to" ?
References: <47156519.2090905@twcny.rr.com>
	<mailman.103.1192585665.13605.python-list@python.org>
Message-ID: <87k5pm1nlp.fsf@benfinney.id.au>

"J. Cliff Dyer" <jcd at sdf.lonestar.org> writes:

> With thunderbird, I do "reply all," which has the ugly side effect
> that the poster of the message I'm responding to gets 2 copies,
> unless I remember to delete one of them.

Though glacially slow (originally requested in 2000), the "reply to
list" function seems to be within the grasp of Thunderbird users:

    <URL:https://bugzilla.mozilla.org/show_bug.cgi?id=45715>

> Same method with mutt

Mutt has long had "reply to author" as 'r', "reply to list" as 'L'.

-- 
 \     "Nothing so needs reforming as other people's habits."  -- Mark |
  `\                                       Twain, _Pudd'n'head Wilson_ |
_o__)                                                                  |
Ben Finney


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 16:01:05 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 21:01:05 +0100
Subject: setting variables in outer functions
In-Reply-To: <fg5jcn$a3t$2@solaris.cc.vt.edu>
References: <mailman.598.1193689199.13605.python-list@python.org>	<fg5hj9$800$1@solaris.cc.vt.edu>
	<mailman.604.1193692711.13605.python-list@python.org>
	<fg5jcn$a3t$2@solaris.cc.vt.edu>
Message-ID: <47278dad$0$29610$426a74cc@news.free.fr>

brad a ?crit :
> Tommy Nordgren wrote:
> 
>>> def outer(avar=False):
>>>      print avar
>>>      if avar == True:
>>>          return
>>>
>>>      def inner(avar=True):
>>>          print avar
>>>          return avar
>>>
>>>      outer(inner())
>>>
>>> outer()
> 
> 
>>     This is not a general solution to this problem.
> 
> 
> Run my example code, it works (if I'm understanding your question 
> correctly). It sets outer to True... inner returns True to outer and 
> thus the var is set... am I missing something?

Yes: you forgot to rebind avar in inner and check the result in outer.


From bcd at pvv.ntnu.no  Wed Oct  3 05:36:40 2007
From: bcd at pvv.ntnu.no (Bent C Dalager)
Date: Wed, 3 Oct 2007 09:36:40 +0000 (UTC)
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdtsfu$iq6$03$1@news.t-online.com>
	<fdvn34$odf$1@orkan.itea.ntnu.no> <85ve9ov971.fsf@lola.goethe.zz>
Message-ID: <fdvnr8$odf$2@orkan.itea.ntnu.no>

In article <85ve9ov971.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>bcd at pvv.ntnu.no (Bent C Dalager) writes:
>
>> In article <fdtsfu$iq6$03$1 at news.t-online.com>,
>> Frank Goenninger  <frgo at goenninger.net> wrote:
>>>
>>>Well, I didn't start the discussion. So you should ask the OP about the 
>>>why. I jumped in when I came across the so often mentioned "hey, it's 
>>>all well defined" statement was brought in. I simply said that if that 
>>>"well-definedness" is against "common understanding" then I don't give 
>>>a damn about that clever definitions. Because I have to know that there 
>>>are such definitions - always also knowing that free is not really 
>>>free.
>>
>> "Liberated" is a valid meaning of the word "free".
>
>No.  It is a valid meaning of the word "freed".

Only if you're being exceedingly pedantic and probably not even
then. Webster 1913 lists, among other meanings,

Free
(...)
"Liberated, by arriving at a certain age, from the control
of parents, guardian, or master."

The point presumably being that having been "liberated", you are now
"free".


As I do not read gnu.misc.discuss, I reinstated the previous bunch.
Apologies to those who may be annoyed at this.

Cheers
	Bent D
-- 
Bent Dalager - bcd at pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 17:04:29 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 16 Oct 2007 23:04:29 +0200
Subject: Last iteration?
In-Reply-To: <1192190670.504909.271450@v23g2000prn.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<1192190670.504909.271450@v23g2000prn.googlegroups.com>
Message-ID: <47152795$0$24450$426a74cc@news.free.fr>

Paul Hankin a ?crit :
> On Oct 12, 11:58 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> 
>>Hello,
>>can I determine somehow if the iteration on a list of values is the last
>>iteration?
>>
>>Example:
>>
>>for i in [1, 2, 3]:
>>   if last_iteration:
>>      print i*i
>>   else:
>>      print i
> 
> 
> Yes, either use enumerate or just stop the loop early and deal with
> the last element outside the loop.
> 
> xs = [1, 2, 3]
> for x in xs[:-1]:
>     print x
> print xs[-1] * xs[-1]

At least something sensible !-)


From rcdailey at gmail.com  Wed Oct 10 17:03:39 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 16:03:39 -0500
Subject: for loop question
In-Reply-To: <1192048912.3388.27.camel@dot.uniqsys.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
	<1192047136.3388.19.camel@dot.uniqsys.com>
	<496954360710101327s7ee23520u9bb4d74833110071@mail.gmail.com>
	<1192048912.3388.27.camel@dot.uniqsys.com>
Message-ID: <496954360710101403p6b057a07le3f6dd0fe03d770@mail.gmail.com>

I've tried everything to make the original CSV module work. It just doesn't.
I've tried UTF-16 encoding (which works fine with codecs.open()) but when I
pass in the file object returned from codecs.open() into csv.reader(), the
call to reader.next() fails because it says something isnt' in the range of
range(128) or something (Not really an expert on Unicode so I'm not sure of
the meaning). I would use CSV if I could!

On 10/10/07, Carsten Haese <carsten at uniqsys.com> wrote:
>
> On Wed, 2007-10-10 at 15:27 -0500, Robert Dailey wrote:
> > I'm using CSV for localization in a game I'm involved with.
>
> That doesn't tell me why you think you need a CSV parser that supports
> Unicode. There is no such thing as a Unicode file. The file contains a
> stream of octets that represent some encoding of Unicode code points. If
> the encoding is chosen properly, such as UTF-8, the standard CSV parser
> should be able to parse the resulting stream.
>
> -Carsten
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/96b8d20e/attachment.html>

From jstroud at mbi.ucla.edu  Tue Oct 16 05:37:33 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 16 Oct 2007 09:37:33 GMT
Subject: extension to list extend
Message-ID: <xD%Qi.8447$6p6.3929@newssvr25.news.prodigy.net>

Found that this would be handy today:

   alist = [1, 2, 3]
   alist.extend(['a', 'b', 'c'], 1)
   alist == [1, 'a', 'b', 'c', 2, 3]  # True

James

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

http://www.jamesstroud.com


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 08:28:33 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 14:28:33 +0200
Subject: HELP me Am very new one To python
In-Reply-To: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>
References: <1191500432.872059.190840@d55g2000hsg.googlegroups.com>
Message-ID: <4705483f$0$32050$426a74cc@news.free.fr>

Damodhar a ?crit :
> hi,
> 
> Am working in PHP MYSQL. I am very very interest to learn Python but i
> don't Know Little Bit,
> am using windows Xp, Ialready download from
> http://www.python.org/ftp/python/2.5.1/python-2.5.1.ia64.msi
> 
> and install into C:\Python25
> 
> whats the next step . i Used 	Apache 2.0  run as a local server..
> 
> whats the next step . please say one by one i already read the
> documentation but i cant get clearer.
> 
> how to configure apache where i want to configure .
> if any files want to copy in to apache folder, wahts the procedure to
> start the coding pls help me am very very beginner pls spend some time
> to teach how to do that.please plaes

As others already pointed, Python is not dedicated to web programming - 
it's a general-purpose language. Also, there are a lot of different ways 
to use Python for web programming, ranging from plain old CGI to 
full-blown application servers. But most of them won't make sens if you 
don't have a minimal knowledge of both the language and the HTTP 
protocol (which is something that most PHP programmers seems to totally 
ignore).

Anyway... I suggest you start by learning Python itself - there's a 
not-too-bad tutorial in the official doc. FWIW, one of the nice things 
with Python is the interactive shell, which let you test code directly. 
Once you'll be done with this, you may either give CGI a try (if you 
don't have much knowledge of the HTTP protocol, it may help you 
understanding what's really going on there), or try some recent web 
framework like Django or Pylons (the first one is a bit more polished 
and better documented, and it seems very popular amongst non-python 
programmers, the second is IMHO far better but probably requires much 
more knowledge of both Python and HTTP).

My 2 cents...

NB : a bit OT, but anyway: while broken English is mostly ok here (there 
are a lot of non native English speakers around - like me), at least 
avoid sms-style.


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 11 12:58:44 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 11 Oct 2007 18:58:44 +0200
Subject: Declarative properties
In-Reply-To: <1192107893.492826.233730@d55g2000hsg.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
Message-ID: <470e5606$0$29825$426a34cc@news.free.fr>

Artur Siekielski a ?crit :
> On Oct 11, 2:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>> But why?  Default getters and setters are unnecessary and if you need
>> something other than the default you need to write it anyway more
>> explicitly.
> 
> I see some problems with your approach:
> 
> 1. If I use instance field 'name' which is accessed directly by other
> classes,
> and later I decide to implement nonstandard getter, I must refactor
> 'Person' class
> and in some places change 'name' to '_name' (assuming this is now the
> field's name).

Why so ?

class Toto(object):
   def __iinit__(self, name):
     self.name = name
   @apply
   def name():
     def fget(self):
       print "getting %s.name" % self
       return self._name
     def fset(self, val):
       print "setting %s.name to %s" % (self, val)
       self._name = name
   def say_hello(self):
     print "Hello, my name is %s" % self.name

t = Toto('bruno')
t.say_hello()

> The problem is that I cannot automatically change 'name' to '_name'
> everywhere, because
> in some places I want public property value (eg. validated and
> formatted), and in other
> places raw property value.

But then, you do know where you want the raw value, don't you ? And this 
  would be for special cases that didn't exist before this refactoring, 
anyway ?

> 2. Properties define (a part of) public interface of a class.

So do attributes.

> When
> using fields for public
> access, you must tell this explicitly in documentation, or use name
> convention. And public
> fields definition is mixed with private fields, which doesn't happen
> when using properties.

I just don't understand what you're saying here. As long as you did not 
prefix a name with an underscore, it's part of the API. And anyway, 
nothing (except common sens) will prevent anyone to mess with 
implementation attributes.

> 3. Using properties as first-class objects

Which they are already - I don't know of anything that isn't a 
"first-class" object in Python.



From seb.haase at gmail.com  Mon Oct  1 09:23:54 2007
From: seb.haase at gmail.com (seb.haase at gmail.com)
Date: Mon, 01 Oct 2007 13:23:54 -0000
Subject: How popular is Django ?
Message-ID: <1191245034.626711.306380@19g2000hsx.googlegroups.com>

Hi!

I was surprised when I did a google-groups search for python,
(
http://groups.google.com/groups/search?q=python&qt_s=Search+Groups
)
it shows these groups:
comp.lang.python  with about 11000 users,
and second,
Django users
Discussion group for Django users. Django is a high-level Python
Web ...

with 6500 members !!!!

I cannot believe that django is *that* popular ... where am I going
wrong ?

Cheers,
Sebastian Haase



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Sun Oct  7 14:00:08 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Sun, 07 Oct 2007 20:00:08 +0200
Subject: Newbie packages Q
In-Reply-To: <1191773880.322472.100070@57g2000hsv.googlegroups.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
Message-ID: <47091e82$0$15807$426a74cc@news.free.fr>

MarkyMarc a ?crit :
> On Oct 7, 6:04 pm, Bruno Desthuilliers <bruno.
(snip)
>> But how do I get this to work?
>> You failed to specify how your files are organized, and what is "not
>> working".
>>
>> But anyway, if
>> - atest.py is in <wherever>/Test/apack,
>> - both Test and apack have a __init__.py
>> - <wherever> is in the sys.path,
>>
>> then this should just work AFAICT.
> 
> If you se me first post you will see have me files are organized.

Could have changed.

> But like this:
> 
>  Test/
>       __init__.py (a empty file)
>       apack/
>                __init__.py (a empty file)
>                atest.py
>       bpack/
>                __init__.py (a empty file)
>                btest.py
> 
> And also in me first post(and others),
> all I get is an import error: ImportError: cannot import name apack.
> 
> And sys.path is  /python/Test/bpack

And you do wonder why you can't import ? Please reread with attention 
the first and third points listed above (following the 'But anyway'). 
The 'Test' package is *not* in your sys.path.



From nagle at animats.com  Wed Oct  3 15:26:02 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 03 Oct 2007 12:26:02 -0700
Subject: M2Crypto 0.18 - new version, same old build bugs - more details
In-Reply-To: <7ybKi.1138$hI7.1043@newssvr17.news.prodigy.net>
References: <eiAIi.10067$924.3670@newssvr23.news.prodigy.net>
	<xoudna66YI1O5m7bnZ2dnUVZ_umdnZ2d@comcast.com>
	<46F82296.5010701@animats.com>
	<Ur-dnTfIZcj5M2XbnZ2dnUVZ_hSdnZ2d@comcast.com>
	<7ybKi.1138$hI7.1043@newssvr17.news.prodigy.net>
Message-ID: <WPRMi.241$lE2.130@newssvr22.news.prodigy.net>

John Nagle wrote:
> Heikki Toivonen wrote:

>    That's progress, but the build still doesn't work:
...
> during a C compile, we get
> 
> SWIG/_m2crypto_wrap.c:2529:18: error: _lib.h: No such file or directory
> 
> and the build goes downhill from there, with many compile errors in the
> GCC phase.  The gcc call
> 
> gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/local/include/python2.5 -c SWIG/_m2crypto_wrap.c -o build/temp.linux-i686-2.5/SWIG/_m2crypto_wrap.o -DTHREADING
> 
> is in the directory below SWIG, and doesn't include SWIG, so it's clear
> why gcc couldn't find the file.


    Any sign of a fix yet?

				John Nagle


From bignose+hates-spam at benfinney.id.au  Thu Oct 18 01:24:27 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 18 Oct 2007 15:24:27 +1000
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
Message-ID: <87myuhyoz8.fsf@benfinney.id.au>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:

> and help(reversed) but neither gives any insight to what happens
> when you use reversed() on a sequence, then modify the sequence.

I would think the answer is the same for any question about modifying
sequences while iterating: "undefined, therefore don't do that".

In other words, if you think you'll be modifying the sequence during
iteration (even if you're iterating indirectly via something like
reversed()), iterate over a copy instead.

-- 
 \           "Professionalism has no place in art, and hacking is art. |
  `\      Software Engineering might be science; but that's not what I |
_o__)        do. I'm a hacker, not an engineer."  -- Jamie W. Zawinski |
Ben Finney


From jcd at sdf.lonestar.org  Thu Oct  4 13:09:54 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Thu, 4 Oct 2007 13:09:54 -0400
Subject: RegEx question
In-Reply-To: <496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
Message-ID: <20071004170954.GA26162@sdf.lonestar.org>

You *are* talking about python regular expressions, right?  There are a number of different dialects.  Also, there could be issues with the quoting method (are you using raw strings?)  

The more specific you can get, the more we can help you.

Cheers,
Cliff
On Thu, Oct 04, 2007 at 11:54:32AM -0500, Robert Dailey wrote regarding Re: RegEx question:
> 
>    On 10/4/07, Adam Lanier <[1]adam at krusty.madoff.com> wrote:
> 
>      try @param\[(in|out)\] \w+
> 
>    This didn't work either :(
>    The tool using this regular expression (Comment Reflower for VS2005)
>    May be broken...
> 
> References
> 
>    1. mailto:adam at krusty.madoff.com

> -- 
> http://mail.python.org/mailman/listinfo/python-list


From matthieu.brucher at gmail.com  Wed Oct 17 16:56:33 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Wed, 17 Oct 2007 22:56:33 +0200
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <13hba5d4sogav12@corp.supernews.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>
	<4713D47B.2070600@ulmcnett.com>
	<e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>
	<4713DAB4.3020904@ulmcnett.com>
	<e76aa17f0710152235j305aeccka6ec92b58d3ebf4b@mail.gmail.com>
	<mailman.69.1192552146.13605.python-list@python.org>
	<13hba5d4sogav12@corp.supernews.com>
Message-ID: <e76aa17f0710171356o4c5ca31ak59a3d6b974b7956b@mail.gmail.com>

>
>         Besides the fact that database management systems need lots of
> random file accesses?


That doesn't imply not supporting file-object.

BTW, how is it possible to close the access to the database ? I deleted the
object but Winows tells me that someone is still holding the file.

Matthieu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/28e5cf9c/attachment.html>

From aleax at mac.com  Sun Oct  7 15:55:30 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 7 Oct 2007 12:55:30 -0700
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<47090ee0$0$11610$3b214f66@tunews.univie.ac.at>
Message-ID: <1i5m6gj.1henyed166y6yrN%aleax@mac.com>

Mathias Panzenboeck <e0427417 at student.tuwien.ac.at> wrote:

> Marc 'BlackJack' Rintsch wrote:
> > ``del b`` just deletes the name `b`.  It does not delete the object.
> > There's still the name `_` bound to it in the interactive interpreter.
> > `_` stays bound to the last non-`None` result in the interpreter.
> 
> Actually I have the opposite problem. The reference (to the bound method)
> gets lost but it shouldn't!

weakrefs to bound methods require some subtlety, see
<http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81253> (or what
I believe is the better treatment of this recipe in the printed edition
of the Python Cookbook -- of course, being the latter's editor, I'm
biased;-).


Alex


From m.pricejones at gmail.com  Tue Oct  2 10:28:35 2007
From: m.pricejones at gmail.com (m.pricejones at gmail.com)
Date: Tue, 02 Oct 2007 14:28:35 -0000
Subject: Adding behaviour for managing "task" dependencies
Message-ID: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>

Hi,

I'm currently writing an animation pipeline in Python which is a
system for controlling the flow of work and assets for a team of
people working on a computer animated film. The system will be fairly
large with a database backend.

One particular problem that I'd like to address is the need for
managing dependent tasks. Often you need to process one particular set
of information before starting on another so when you batch them all
together and send them off to a set of computers to process you need
some way of formulating the dependencies. This preferably ends up
looking a lot like a Makefile in the end with syntax a bit like:

task task_name (dependencies):
    commands to complete the task
    ...

Where the dependencies are a list of other tasks that need to be
completed first.

However I'd really like to do it in Python, but I'm thinking I'd might
need to extend Python a bit in order to achieve the new syntax. I've
seen attempts to do this within the Python syntax (Scons and buildIt)
and I'm not a big fan of the way it ends up looking. I've worked at a
place that has written it's own language to handle that sort of thing
but then you end up with a language that is good for that but rubbish
at everything else. Python seems like a good basis if I could tweak it
slightly.

One particular point that interests me is the idea of maintaining
compatibility with Python modules so you still have all the
functionality. This makes me think of the "from __future__ import ..."
statements which, if I understand them correctly, can introduce new
syntax like the with_statement, whilst still maintaining compatibility
with older modules?

Is this correct? Can anyone write a syntax changing module or is
__future__ a hard coded special case? I realise I'll have to get into
the C side of things for this. Are there other approaches to this that
I really should be considering instead?

Any thoughts would be most appreciated, though I would like to stress
that I don't think Python should support the syntax I'm proposing I'd
just like to know if I can extend a copy of it to do that.

Mike



From eduardo.padoan at gmail.com  Thu Oct 18 07:14:15 2007
From: eduardo.padoan at gmail.com (Eduardo O. Padoan)
Date: Thu, 18 Oct 2007 09:14:15 -0200
Subject: Script to Download Ubuntu Gutsy ASAP
In-Reply-To: <1192684143.871518.316880@v23g2000prn.googlegroups.com>
References: <1192684143.871518.316880@v23g2000prn.googlegroups.com>
Message-ID: <dea92f560710180414g5ada5c8di6a6f85d011dc852c@mail.gmail.com>

On 10/18/07, danfolkes <danfolkes at gmail.com> wrote:
> I thought I would post the source to a program that I made that will
> download the http://ubuntu.media.mit.edu/ubuntu-releases/gutsy/
> as soon as its posted.
>
> It checks the site every 10 min time.sleep(600)
>
> This is mostly untested so I would appreciate comments, and if you use
> it, post that too! :)
> <code>
>
> import time
> import urllib
>
> mysock = urllib.urlopen("http://ubuntu.media.mit.edu/ubuntu-releases/
> gutsy/ubunt
> u-7.10-desktop-i386.iso")
> #print mysock
> while 1:
>     image = mysock.read()
>     if image[0:1]!='<':
>         oFile = open(r"image.iso",'wb')
>         oFile.write(image)
>         oFile.close
>         break
>         exit
>     print "Wait ", time.localtime()
>     time.sleep(600)
>
>
> </code>
>
> enjoy,

Please, don't do it. Use the torrent, Luke.
Also, use the HTTP error code - while the file is not at the server,
you will receive a 404, I think.

-- 
http://www.advogato.org/person/eopadoan/
Bookmarks: http://del.icio.us/edcrypt


From llothar at web.de  Sat Oct 20 17:04:06 2007
From: llothar at web.de (llothar)
Date: Sat, 20 Oct 2007 14:04:06 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
Message-ID: <1192914246.208743.94870@y27g2000pre.googlegroups.com>


> I love math. I respect Math. I'm nothing but a menial servant to
> Mathematics.

Programming and use cases are not maths. Many mathematics are
the worst programmers i've seen because they want to solve things and
much more often you just need heuristics. Once they are into exact
world they loose there capability to see the factor of relevance in
algorithms.

And they almost never match the mental model that the average
user has about a problem.



From paul.brauner at loria.fr  Mon Oct 22 05:44:27 2007
From: paul.brauner at loria.fr (Paul Brauner)
Date: Mon, 22 Oct 2007 09:44:27 +0000 (UTC)
Subject: python with braces pre-processor
Message-ID: <ffhrdr$ikp$1@news.ciril.fr>

Hi, I'm working on a project that outputs several languages including 
(hopefully) python. My problem is that the generic backend architecture 
has not been designed to output correctly indented code, and that would 
be helpful if there were somewhere a python pre-processor that would take 
python with braces as an input and output regular python code. I thought 
that it must exists because everyone generating python code will 
encounter more or less the same problem, but I didn't find any 'official' 
thing on the subject. I mean that I wonder if there is a special mode of 
the offcial parser that does such a thing. If not, do you know the most 
reliable project that would do this ?

Thanks a lot.

Paul


From wizzardx at gmail.com  Fri Oct  5 08:36:20 2007
From: wizzardx at gmail.com (David)
Date: Fri, 5 Oct 2007 14:36:20 +0200
Subject: Boolean parser..
In-Reply-To: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
Message-ID: <18c1e6480710050536m300daf84k9b4cc3d5477c8a08@mail.gmail.com>

On 10/4/07, Abandoned <besturk at gmail.com> wrote:
> Hi..
> I try a boolean parser in python since 1 weak.. But i can't do this
> because this is very complicated :(
> Do you know any blooean parser script in python or how do i write a
> boolean parser ?
> example query: ((google or yahoo) or (live msn)) not web
> I'm sorry my bad english.
> King Regards..
>
> --

http://mail.python.org/pipermail/python-list/2006-August/399804.html


From bearophileHUGS at lycos.com  Sat Oct 27 08:23:30 2007
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: Sat, 27 Oct 2007 05:23:30 -0700
Subject: simple question on dictionary usage
In-Reply-To: <472327af$0$31482$426a74cc@news.free.fr>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<472327af$0$31482$426a74cc@news.free.fr>
Message-ID: <1193487810.194444.277900@o38g2000hse.googlegroups.com>

My take too :-)

dict(item for item in record.iteritems() if item[0][0] == 'E')

Bye,
bearophile



From limodou at gmail.com  Tue Oct 23 03:20:36 2007
From: limodou at gmail.com (limodou)
Date: Tue, 23 Oct 2007 15:20:36 +0800
Subject: ignoring chinese characters parsing xml file
In-Reply-To: <471D96D9.6070107@web.de>
References: <mailman.340.1193081085.13605.python-list@python.org>
	<5o4evvFktnthU5@mid.uni-berlin.de>
	<mailman.345.1193088585.13605.python-list@python.org>
	<471D96D9.6070107@web.de>
Message-ID: <505f13c0710230020h2eeebdbaya8e657592dc47cf3@mail.gmail.com>

On 10/23/07, Stefan Behnel <stefan.behnel-n05pAM at web.de> wrote:
> Fabian L?pez wrote:
> > Thanks Mark, the code is like this. The attrib name is the problem:
> >
> > from lxml import etree
> >
> > context = etree.iterparse("file.xml")
> > for action, elem in context:
> >     if elem.tag == "weblog":
> >         print action, elem.tag , elem.attrib["name"],elem.attrib["url"],
>
> The problem is the print statement. Looks like your terminal encoding (that
> Python needs to encode the unicode string to) can't handle these unicode
> characters.
>
I agree. For Japanese, you should know the exactly encoding name, and
convert them, just like:

print text.encoding('encoding')

-- 
I like python!
UliPad <<The Python Editor>>: http://code.google.com/p/ulipad/
meide <<wxPython UI module>>: http://code.google.com/p/meide/
My Blog: http://www.donews.net/limodou


From adurdin at gmail.com  Fri Oct 19 09:16:00 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Fri, 19 Oct 2007 14:16:00 +0100
Subject: ConfigParser preserving file ordering
In-Reply-To: <200710191301.30573.Frank.Aune@broadpark.no>
References: <200710190123.39177.Frank.Aune@broadpark.no>
	<ff921p$116$1@ger.gmane.org>
	<200710191301.30573.Frank.Aune@broadpark.no>
Message-ID: <59e9fd3a0710190616r59c7eb2v1c66a1bad8798922@mail.gmail.com>

On 10/19/07, Frank Aune <Frank.Aune at broadpark.no> wrote:
>
> Yes, but as I said I need functionality present in the standard-library, so
> sub-classing ConfigParser is the last option really.

Any particular reason you're limited to the standard library?

I've used iniparse <http://code.google.com/p/iniparse/> before as a
drop-in replacement for ConfigParser that preserves ordering and
comments, and only falling back to ConfigParser if iniparse wasn't
present; like this:

try:
    from iniparse.compat import *
except ImportError:
    from ConfigParser import *

As for updating ConfigParser -- like most other changes, it probably
needs a champion.

Andrew


From kyosohma at gmail.com  Tue Oct  2 09:11:24 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 02 Oct 2007 13:11:24 -0000
Subject: setuptools without unexpected downloads
In-Reply-To: <mailman.1164.1190908383.2658.python-list@python.org>
References: <87ejgmklep.fsf@benfinney.id.au>
	<1190802526.695391.326220@n39g2000hsh.googlegroups.com>
	<5lurorFa92euU1@mid.uni-berlin.de>
	<1190805012.275901.227570@57g2000hsv.googlegroups.com>
	<5luv0iFaai82U1@mid.uni-berlin.de>
	<1190808836.056298.232640@57g2000hsv.googlegroups.com>
	<fddivk$f90$1@sea.gmane.org>
	<mailman.1111.1190813942.2658.python-list@python.org>
	<1190840682.716950.131830@r29g2000hsg.googlegroups.com>
	<mailman.1164.1190908383.2658.python-list@python.org>
Message-ID: <1191330684.132452.179580@y42g2000hsy.googlegroups.com>

On Sep 27, 10:44 am, Fredrik Lundh <fred... at pythonware.com> wrote:
> kyoso... at gmail.com wrote:
> > What would it entail to do this? Using py2exe + some installer (like
> > Inno Setup) to create an installer that basically copies/installs the
> > files into the site-packages folder or wherever the user chooses?
>
> if the setup.py file is properly built, "python setup.py bdist_wininst"
> builds an installer that does exactly that.
>
> ideally, someone doing this would:
>
> 1) build EXE installers and EGG:s for a reasonable number of Python
> versions (e.g. 2.3 and newer) for selected releases.  if possible, using
> the same compilers as used for the python.org core distribution.
>
> 2) test the installers in some way (at least some kind of "sanity
> checking" is necessary; i.e. installing the kit and checking that the
> core modules can at least be imported).
>
> 3) if necessary, work with upstream providers to fix/improve setup.py
> and test code.
>
> </F>

Mr. Lundh,

Holden indicates that VS2003 is the current compiler used for the
official Python distribution. Do you know how to use that program to
compile an exe? I'm assuming the line "python setup.py bdist_wininst"
isn't sufficient since it was an answer to my somewhat naive question.

Thanks,

Mike



From draghuram at gmail.com  Mon Oct 15 12:31:03 2007
From: draghuram at gmail.com (draghuram at gmail.com)
Date: Mon, 15 Oct 2007 16:31:03 -0000
Subject: View XMLRPC Requests/Responses?
In-Reply-To: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
References: <1192460878.597651.64680@k35g2000prh.googlegroups.com>
Message-ID: <1192465863.885603.282670@z24g2000prh.googlegroups.com>

On Oct 15, 11:07 am, xkenneth <xkenn... at gmail.com> wrote:
> Hi,
>
>     I'm working on developing an XML-RPC interface from LabVIEW to
> python and I would really like to see how python is forming it's XML-
> RPC requests/responses. Is there any way I can force these to a log or
> print them to the screen? Thanks.

You may try setting verbose to True as in:

s = xmlrpclib.Server('http://localhost:8000', verbose=True)

This will cause both requests and responses to be printed.

HTH,
Raghu



From chris.monsanto at gmail.com  Sun Oct  7 12:00:31 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Sun, 07 Oct 2007 16:00:31 -0000
Subject: Top Programming Languages of 2013
In-Reply-To: <47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
References: <mailman.1621.1191737112.2658.python-list@python.org>
	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>
	<47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1191772831.195100.90770@k79g2000hse.googlegroups.com>

On Oct 7, 11:54 am, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> Kay Schluehr wrote:
> > On Oct 7, 8:05 am, Dick Moores <r... at rcblue.com> wrote:
> >> <http://www.redcanary.ca/view/top-programming>
>
> >> Dick Moores
>
> > Despite my doubts that Ajax and .NET will be programming languages in
> > 2013 a more interesting question is: what could push Python forward
> > s.t. it eats such a large piece of the PL cake?
>
> import friends
> import sex
>
> try:
>      sex.have()
> except ErrectionError, PrematureError:
>      pass
> finally:
>      sex.brag(friends)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
KeyError: 'woman'




From david.trem at gmail.com  Fri Oct 19 01:23:06 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Fri, 19 Oct 2007 07:23:06 +0200
Subject: ANN: Pyrex 0.9.6.3
In-Reply-To: <1192742333.122426.42400@i38g2000prf.googlegroups.com>
References: <mailman.127.1192636224.13605.python-announce-list@python.org>
	<1192742333.122426.42400@i38g2000prf.googlegroups.com>
Message-ID: <129e1cd10710182223h30023679oc1674518dfb933e4@mail.gmail.com>

Hello,

 Was about to report the same problem with setup.py.

Regards,

David

2007/10/18, kyosohma at gmail.com <kyosohma at gmail.com>:
> On Oct 17, 4:12 am, Greg Ewing <greg.ew... at canterbury.ac.nz> wrote:
> > Pyrex 0.9.6.3 is now available:
> >
> >    http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/
> >
> > Main features of this release:
> >
> >    * The C API now uses just one name in the module namespace,
> >      instead of a name per C function.
> >
> >    * The 'cdef' keyword and following extern/public/api qualifiers
> >      can be factored out of a group of declarations and made into
> >      a block header, e.g.
> >
> >        cdef public:
> >          int spam
> >          float ftang
> >          void tomato()
> >
> >    * A 3-argument form of the builtin getattr function has been
> >      added, called getattr3().
> >
> > What is Pyrex?
> > --------------
> >
> > Pyrex is a language for writing Python extension modules.
> > It lets you freely mix operations on Python and C data, with
> > all Python reference counting and error checking handled
> > automatically.
>
> Did anyone else notice that the setup.py file is screwed up? Or that
> the link on this guy's website for the Test Suite/Framework is broken?
>
> Mike
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From richajoge143 at yahoo.com  Tue Oct 30 02:50:39 2007
From: richajoge143 at yahoo.com (richajoge143 at yahoo.com)
Date: Mon, 29 Oct 2007 23:50:39 -0700
Subject: SHARING SOME INTERESTING LINKS I FOUND ON NET
Message-ID: <1193727039.900862.132230@i38g2000prf.googlegroups.com>

SHARING SOME INTERESTING LINKS I FOUND ON NET



PART-TIME JOB FOR GOOGLE,NO INVESTMENT,FREE MONEY

u all are familier about google but do u know that google gives us
opportunity to build our free website any one can earn free money  up
to $4000 per month :

1) NO PRE INVESTMENT

2) U'll get ur website totally for free

3) U can build ur website without knowing any web designing language.

4) mind it that it's google's offer so no cheating involved.

5) u wont have anything to loose , but only to gain.

for details check this website  : www.itsurmoney.blogspot.com



CLASSIC HORROR


Real shock      http://deathlyhollow.blogspot.com/2007/10/real-shock.html



Flaming saint      http://deathlyhollow.blogspot.com/2007/10/flaming-saint.html


Aborted baby   http://deathlyhollow.blogspot.com/2007/10/abortion.html



 Horrific girl

http://deathlyhollow.blogspot.com/2007/10/horror1.html


Trapped in water
http://deathlyhollow.blogspot.com/2007/10/2.html






LOVE GIFT


Love rain      http://deathlyhollow.blogspot.com/2007/10/love-rain.html


Love poem pic2     http://deathlyhollow.blogspot.com/2007/10/love-poem-1.html



 Love poem pic1      http://deathlyhollow.blogspot.com/2007/10/love-poem2.html



FREE ONLINE GAMES




Games page 1 	http://deathlyhollow.blogspot.com/2007/10/gamefront.html

Games page 2	http://deathlyhollow.blogspot.com/2007/09/games.html

Games page 3	http://deathlyhollow.blogspot.com/2007/10/games2.html

Games page 4	http://deathlyhollow.blogspot.com/2007/10/game4.html


SHARING SOME INTERESTING LINKS I FOUND ON NET

AMAZINGS STUFFS





Praying child
(http://deathlyhollow.blogspot.com/2007/10/praying-child.html)


Crying beauty
"http://deathlyhollow.blogspot.com/2007/10/crying-beauty.html"

Stylish bikni
"http://deathlyhollow.blogspot.com/2007/10/stylish-bras.html"


Dont omplain	http://deathlyhollow.blogspot.com/2007/10/blog-post.html>


Body tatoo
http://deathlyhollow.blogspot.com/2007/10/body-tatoos.htmlBody tatoo


Amazing twins
http://deathlyhollow.blogspot.com/2007/10/amazing-twins.html=""
target="_new">Amazing twins


Heart touching incident	http://deathlyhollow.blogspot.com/2007/10/heart-touching-incident.html



	FUNNY STUFF

Amazing bridge
http://deathlyhollow.blogspot.com/2007/10/amazing-bridge.html


Smoking child	"http://deathlyhollow.blogspot.com/2007/10/smoking-
child.html


Bush's secret photo	http://deathlyhollow.blogspot.com/2007/10/bushs-secret-photo.html


Nehru's joke	http://deathlyhollow.blogspot.com/2007/10/nehrus-joke.html


Difficult to explain	http://deathlyhollow.blogspot.com/2007/10/awsome.html

Funny dog	http://deathlyhollow.blogspot.com/2007/10/funny-dog.html

ANTI HACKING

HOW NOT TO GET HACKED	http://realm-of-tricks.blogspot.com/2007/09/how-not-to-get-hacked.html

MAKING PASSWORDS VERY VERY TOUGH TO CRACK
http://realm-of-tricks.blogspot.com/2007/10/making-very-strong-passwords.html


PREVENTING OTHERS TO COPY PIC OR FILE FROM UR WEBPAGE
http://realm-of-tricks.blogspot.com/2007/10/preventing-others-to-copy-ur-pics-or.html



TROZEN CHECK
http://realm-of-tricks.blogspot.com/2007/10/trozen-check.html





VIRUS CODES


AUTOPLAY VIRUS SOLUTION		http://realm-of-tricks.blogspot.com/2007/09/autoplay-virus-solution_11.html


DUMMY VIRUS 1	http://realm-of-tricks.blogspot.com/2007/09/virus-code.html


VIRUS TO MAKE THE PC RESTART OR SHUTDOWN AGAIN AND AGAIN
http://realm-of-tricks.blogspot.com/2007/09/make-computer-keep-restarting-1.html


PC TWEAKS


SPEEDING XP BY 60 TIMES		http://realm-of-tricks.blogspot.com/2007/09/speeding-xp-by-60-times.html


MAKE A FOLDER ININCIBLE		http://realm-of-tricks.blogspot.com/2007/09/invincible-folder.html



CLONING HARDDISK WITHOUT ANY SOFTWARE	http://realm-of-tricks.blogspot.com/2007/09/cloning-harddisk.html



CHANGE DRIVE LETTERS	http://realm-of-tricks.blogspot.com/2007/09/change-drive-letters.html




LOCK XP WORKSTATION	http://realm-of-tricks.blogspot.com/2007/09/lock-workstation.html


DISPLAY MESSAGE ON WINDOWS STARTUP
http://realm-of-tricks.blogspot.com/2007/09/display-message-on-startup.html


NOTEPAD "WORLD TRADE CENTER TRICK
http://realm-of-tricks.blogspot.com/2007/09/notepad-world-trade-centre-trick.html





FORBIDDEN FOLDER NAMES		http://realm-of-tricks.blogspot.com/2007/09/words-that-cant-be-used-for-naming.html


CHANGING DRIVES ICON	http://realm-of-tricks.blogspot.com/2007/09/changing-drives-icons.html



MOBILE TRICKS AND HACKS



NOKIA NEW MOBILE CODES<		http://realm-of-tricks.blogspot.com/2007/09/nokia-new-mobile-cheats.html


ERICSON MOBILE SECRETS
http://realm-of-tricks.blogspot.com/2007/09/ericsson-mobile-secrets.html





VIRUS FIXING



Newfolder.exe
http://realm-of-tricks.blogspot.com/2007/10/newfolderexe-virus-solution.html



Temp2.exe
http://realm-of-tricks.blogspot.com/2007/10/temp2exe-virus-solution.html


Restrictions creating virus solution
http://realm-of-tricks.blogspot.com/2007/10/restrictions-creating-virus-solution.html

Taskmanager and regedit virus solutio
http://realm-of-tricks.blogspot.com/2007/10/taskmanager-or-registry-editor-virus_21.html


MUHAHAHA virus solution	http://realm-of-tricks.blogspot.com/2007/10/muhaha-virus-solution.html


FREE DOWNLOADS



FREE KELOGGERS<		http://realm-of-tricks.blogspot.com/2007/10/keylogger-download.html



MS DOCUMENTS PASSWORD CRACKER	http://realm-of-tricks.blogspot.com/2007/10/ms-office-files-password-cracker.html



HACKING SOFTWARES	http://realm-of-tricks.blogspot.com/2007/10/hacking-softwares-1.html


BYPASSING WEBFILTERS	http://realm-of-tricks.blogspot.com/2007/10/bypassing-webfilters.html


HACKING UR SCHOOL'S OR COLLEGE'S PC
http://realm-of-tricks.blogspot.com/2007/10/hacking-ur-schools-pc.html


WHAT ARE TROZENS	http://realm-of-tricks.blogspot.com/2007/10/trozens.html


IP ADDRESS DETAILS	http://realm-of-tricks.blogspot.com/2007/10/ip-address-details.html


KEYLOGGERS	http://realm-of-tricks.blogspot.com/2007/10/keyloggers.html



PORT KNOCKING	http://realm-of-tricks.blogspot.com/2007/10/port-knocking-2.html


NETBIOS
http://realm-of-tricks.blogspot.com/2007/10/netbios.html






SHORTCUT FOR RESTARTING PC	http://realm-of-tricks.blogspot.com/2007/09/creating-shortcut-for-restating.html


POPPING UR NAME BANNER ON WINDOWS STARTING
http://realm-of-tricks.blogspot.com/2007/09/pop-banner-on-windows-boot.html


ADD UR PHOTO TO MY COMPUTER PROPERTIES

http://realm-of-tricks.blogspot.com/2007/09/add-ur-photo-to-my-computer-properties.html

LOCK FOLDER WITHOUT ANY SOFTWARE
http://realm-of-tricks.blogspot.com/2007/09/lock-any-folder-without-any-software.html

REMOVE SHUTDOWN OPTION	http://realm-of-tricks.blogspot.com/2007/09/remove-shutdown-option-from-ur-pc.html


RUN COMMANDS (VERY HELPFUL FOR THOSE WHO HATE MOUSE)
http://realm-of-tricks.blogspot.com/2007/09/run-commands_11.html


HACKS AND CRACKS

ENABLING RIGHT CLICK ON DAT SITES WHO DISABLED IT
http://realm-of-tricks.blogspot.com/2007/09/enabling-right-clicks-on-site-dat.html


FORMATTING HDDD WHILE RUNNING WINDOWS
http://realm-of-tricks.blogspot.com/2007/09/formatting-hdd-while-windows-is-on.html

FORMAT HDD USING NOTEPAD	http://realm-of-tricks.blogspot.com/2007/09/format-hdd-using-notepad.html


FIND WHO IS INVISIBLE IN YAHOO MESSENGER
http://realm-of-tricks.blogspot.com/2007/09/find-who-is-invisible-in-yahoo-1.html


CREATING BAD SECTORS IN HDD	http://realm-of-tricks.blogspot.com/2007/09/creating-bad-sector-on-hdd.html


ERASE HDD AND CMOS
http://realm-of-tricks.blogspot.com/2007/09/erase-hdd-and-cmos.html


FIND IP ADDRESS OF SENDER IN YAHOO
http://realm-of-tricks.blogspot.com/2007/09/find-ip-address-of-sender-in-yahoo.html

KNOWING WHO HACKED U	http://realm-of-tricks.blogspot.com/2007/09/knowing-who-hacked-you.html

HACKING ADMIN FROM USER ACCOUNT
http://realm-of-tricks.blogspot.com/2007/10/hacking-admin-from-user-account.html

HACKING MSN	http://realm-of-tricks.blogspot.com/2007/10/hacking-msn.html



From lepto.python at gmail.com  Wed Oct 31 09:14:29 2007
From: lepto.python at gmail.com (oyster)
Date: Wed, 31 Oct 2007 21:14:29 +0800
Subject: Any free python module acts like "Image Processing Toolbox" in matlab?
Message-ID: <6a4f17690710310614u67b16853p95f47fe4a3e035b@mail.gmail.com>

as the title says, and thanx.
for example, that is the help on cpselect(input, base) starts the Control
Point Selection Tool (
www.mathworks.com/access/helpdesk/help/toolbox/images/cpselect.html)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/a7498631/attachment.html>

From schmidt_florian at gmx.de  Mon Oct  1 14:52:42 2007
From: schmidt_florian at gmx.de (Florian Schmidt)
Date: Mon, 1 Oct 2007 20:52:42 +0200
Subject: Limits on search length
In-Reply-To: <20071001183327.GA3510@localdomain>
References: <47012B81.40100@altaregos.com> <20071001183327.GA3510@localdomain>
Message-ID: <20071001185239.GC3510@localdomain>

On Mon, Oct 01, 2007 at 08:33:28PM +0200, Florian Schmidt wrote:
> could you post your searchPattern?
sorry. now i see you already posted your search pattern!:)
r".{272}"

-- 
Florian Schmidt	// www.fastflo.de



From ldo at geek-central.gen.new_zealand  Thu Oct  4 03:37:25 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 20:37:25 +1300
Subject: Algebraic Modules For Python
References: <47017be5.0335640a.2603.123d@mx.google.com>
	<mailman.1407.1191358490.2658.python-list@python.org>
Message-ID: <fe257l$v42$2@lust.ihug.co.nz>

In message <mailman.1407.1191358490.2658.python-list at python.org>, Shawn
Milochik wrote:

> On 10/1/07, Brandon McGinty <brandon.mcginty at gmail.com> wrote:
>>
> 
>> Brandon McGinty
>> McGinty Soft Ltd.
>> Website design, configuration, and maintenance
>> Python and PHP coder
> 
> So let me get this straight:
> 
> You label yourself as a coder for hire in Python, but you don't have
> time to search the Internet for an answer to your own Python question?

Yeah, but he's also a PHP coder, and that's probably worth a 20 IQ point
penalty right there. :)


From python.list at tim.thechases.com  Mon Oct 22 18:39:58 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 22 Oct 2007 17:39:58 -0500
Subject: Iteration for Factorials
In-Reply-To: <1193089836.219692.117420@q5g2000prf.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<Xns99D18CCFC2430duncanbooth@127.0.0.1>	<1193075845.148527.80820@k35g2000prh.googlegroups.com>	<87bqarov3n.fsf@rudin.co.uk>	<1193080349.610343.95430@v23g2000prn.googlegroups.com>	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>	<mailman.344.1193084287.13605.python-list@python.org>
	<1193089836.219692.117420@q5g2000prf.googlegroups.com>
Message-ID: <471D26BE.1090009@tim.thechases.com>

>> If obscurity is the name of the game,
>>
>>    >>> from operator import mul
>>    >>> fact = lambda i: i > 1 and reduce(mul, xrange(1,i+1)) or i
>>  >= 0 and 1 or None
>>    >>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i))
>>
>> My eyes hurt after reading that...as the order of operations is
>> left to Python to discern (a few judiciously placed parens might
>> improve things...though that may be like polishing coprolite)
> 
> Indeed. Particularly since it doesn't work:

Huh?  Works on the Python (2.4) I have, both the Win32 python at
work and Linux Python at home:

>>> from operator import mul
>>> fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or i
>= 0 and 1 or None
>>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i))
...
-2! = None
-1! = None
0! = 1
1! = 1
2! = 2
3! = 6
4! = 24
5! = 120
6! = 720
7! = 5040
8! = 40320
9! = 362880

It could even be more obscure by making it

>>> fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or not
i and 1 or None

Stunts like this would get a person fired around here if they
were found in production code :)

-tkc





From mensanator at aol.com  Tue Oct 23 00:38:55 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 21:38:55 -0700
Subject: for loop
In-Reply-To: <mailman.353.1193105567.13605.python-list@python.org>
References: <mailman.347.1193091482.13605.python-list@python.org>
	<5o4m5kFktnthU6@mid.uni-berlin.de>
	<1193092630.751179.198560@q5g2000prf.googlegroups.com>
	<1193094348.431443.237740@q3g2000prf.googlegroups.com>
	<mailman.353.1193105567.13605.python-list@python.org>
Message-ID: <1193114335.616347.146300@e34g2000pro.googlegroups.com>

On Oct 22, 9:12?pm, Shawn Minisall <trekker... at comcast.net> wrote:
> Thanks, everyone!  Using everyone's suggestions and points, the program
> is working great now.  

Actually, it's not. I assume not printing the population
was a copy error.

But, by adding the "if (p>1):", you have now made
day 1 the initial population, so if you ask for
8 days of multiplication, you actually only get 7.

Although your code is working, it's not giving you
the correct answer. Most of the time in these kinds
of problems, days means elapsed days. That means for
100 organisms @ 25% growth/day, there will be 125
after 1 elapsed day. But that "if (p>1):" means you
show 100 at day 1, which is wrong. You have 100 after
0 elapsed days (or day 0).


> Here's the updated code.
>
> :)
>
> import math
>
> def main():
>     #Declare and initialize variables
>     #starting number of organisms
>     organisms = 0
>     #average daily population increase as %
>     increase = 0.0
>     #number of days they will multiply
>     days = 0
>     #population prediction
>     population = 0.0
>
>     #Intro
>     print "*********************************************"
>     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
>     print "*********************************************"
>
>     print "This program will predict the size of a population of organisms."
>     print
>     print
>     while organisms <=1:
>         organisms=input("Please enter the starting number of organisms: ")
>         if organisms <=1:
>             print "Error. Population must be at least two."
>
>     while increase <=0:
>         increase=input("Please enter the average daily population
> increase as a percentage (20% = .20): ")
>         if increase <=0:
>             print "The percent of increase must be positive."
>
>     while days <=0:
>         days=input("Please enter the number of days that they will
> multiply: ")
>         if days <=0:
>             print "The number of days must be positive."
>
>     print "         Day                                    Population"
>     print "----------------------------------------------------------"
>     population = organisms
>
>     for p in range (1,days+1):
>         if(  p > 1 ):
>             population = population + ( population * increase )
>
>         print "\t",p,
>
>
>
> mensana... at aol.com wrote:
> > On Oct 22, 5:37 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>
> >> On Oct 22, 5:22 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
> >>> On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:
>
> >>>> #Intro
> >>>>     print "*********************************************"
> >>>>     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
> >>>>     print "*********************************************"
>
> >>>>     print "This program will predict the size of a population of organisms."
> >>>>     print
> >>>>     print
> >>>>     organisms=input("Please enter the starting number of organisms: ")
>
> >>>>     increase=input("Please enter the average daily population increase
> >>>> as a percentage (20% = .20): ")
>
> >>>>     days=input("Please enter the number of days that they will multiply: ")
>
> >>>> print "         Day                                    Population"
> >>>> print "----------------------------------------------------------"
>
> >>>> for p in range (days):
>
> >>>>     population = organisms * population * increase
>
> >>>>     print days,
>
> >>>>     print "\t\t\t\t",population
>
> >>>> I'm having problems with my for loop here to calculate estimated
> >>>> population output to a table.  Instead of knowing how much I want to
> >>>> loop it, the loop index is going to be whatever number of days the user
> >>>> enters.  When I run my program, it asks the 3 questions above but then
> >>>> just dead stops at a prompt which leads me to believe there's something
> >>>> wrong with my loop.
>
> >>> It should not run at all as it is indented inconsistently.  If that
> >>> problem is corrected it will stop with a `NameError` because you try to
> >>> read `population` before anything was assigned to it.
>
> >>> Ciao,
> >>>         Marc 'BlackJack' Rintsch
>
> >> Also, I would guess that you want to print p, not days
>
> > Oh, and your calculation is incorrect. You don't multiply by
> > organisms in every loop iteration, organisms is the initial
> > value of population, so you can solve the "Name" error by doing
> > population = organisms before the for..loop.
>
> > And since you're asking for an increase, you don't multiply by the
> > percent (as that would decrease the population), but instead by
> > 1+increase.
>
> > Also, does day==0 represent the first day of increase or the
> > initial value? One would normally expect day==0 to be the initial
> > value, but as written, day==0 is the first day of increase. I
> > would use xrange(1,days+1) instead.
>
> > Lastly, you can't have a fraction of an organism, right? You might
> > want to print your floating point population rounded to an integer.
>
> > population = organisms
> > for p in xrange(1,days+1):
> >   population = population * (1 + increase)
> >   print p,
> >   print "\t\t\t\t%0.0f" % (population)
>
> > ##  *********************************************
> > ##  WELCOME TO THE POPULATION GROWTH CALCULATOR
> > ##  *********************************************
> > ##  This program will predict the size of a population of organisms.
> > ##
> > ##
> > ##  Please enter the starting number of organisms: 100
> > ##  Please enter the average daily population increase as a percentage
> > (20% = .20): 0.25
> > ##  Please enter the number of days that they will multiply: 8
> > ##           Day                                    Population
> > ##  ----------------------------------------------------------
> > ##  1                              125
> > ##  2                              156
> > ##  3                              195
> > ##  4                              244
> > ##  5                              305
> > ##  6                              381
> > ##  7                              477
> > ##  8                              596- Hide quoted text -
>
> - Show quoted text -




From hniksic at xemacs.org  Wed Oct 31 11:40:31 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 31 Oct 2007 16:40:31 +0100
Subject: why did these companies choose Tcl over Python
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
	<roy-A605DC.10235431102007@news.panix.com>
Message-ID: <87d4uvmgwg.fsf@mulj.homelinux.net>

Roy Smith <roy at panix.com> writes:

> We also had lots of hooks into C code.  Doing that is trivial in Tcl.  Yes, 
> I know you can extend/embed Python, but it's a LOT easier in Tcl.
> Embedding a Tcl interpreter in a C program is literally one line of
> code.

Have you tried both or just Tcl?  I've seen examples of both and they
look about equally simple to set up.
http://docs.python.org/ext/high-level-embedding.html shows a Python
high-level example.  Many companies use the kind of simple embedding
shown there in real-world projects.


From ccshan at cs.rutgers.edu  Tue Oct  9 16:41:28 2007
From: ccshan at cs.rutgers.edu (Chung-chieh Shan)
Date: Tue, 9 Oct 2007 16:41:28 -0400
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<m2641g1mgn.fsf@my.address.elsewhere>
	<1191958673.182295.207190@22g2000hsm.googlegroups.com>
Message-ID: <ok5tt4-2ij.ln1@mantle.rutgers.edu>

gnuist006 at gmail.com wrote in article <1191958673.182295.207190 at 22g2000hsm.googlegroups.com> in comp.lang.functional:
> > One of the most lucid explanations of definitional interpreters --
> > including those that are based on continuation-passing -- are
> > explained in J. Reynolds' famous 1971 "Definitional Interpreters for
> > Higher-Order Functions" paper.  (It has been re-published in 1998 in
> > HOSC.)  The paper also explains how to perform defunctionalization,
> > which can be seen as a way to compile (and even hand-compile)
> > higher-order programs.
> 
> Matthias, thanks for the reference, but I dont have access to an
> engineering library. I would appreciate, if you have access to paper/
> scanner or electronic copy to help many of us out, you are
> not just helping me but many will thank you.

If nothing else, please use Google.  Many will thank you.
http://www.google.com/search?hl=en&q=Definitional+Interpreters+for+Higher-Order+Functions&btnG=Search

-- 
Edit this signature at http://www.digitas.harvard.edu/cgi-bin/ken/sig
If monads encapsulate effects and lists form a monad, do lists correspond to
some effect?  Indeed they do, and the effect they correspond to is choice.
Wadler 1995, Monads for fn'l programming


From paul.hankin at gmail.com  Tue Oct 23 20:28:43 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 24 Oct 2007 00:28:43 -0000
Subject: Anagrams
In-Reply-To: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
Message-ID: <1193185723.647144.302410@i13g2000prf.googlegroups.com>

On Oct 23, 9:21 am, cokofree... at gmail.com wrote:
> This one uses a dictionary to store prime values of each letter in the
> alphabet and for each line multiple the results of the characters
> (which is unique for each anagram) and add them to a dictionary for
> printing latter.
>
> def anagram_finder():
>     primeAlpha = {'a':2, 'b':3, 'c':5, 'd':7,'e' : 11, 'f':13, 'g':17,
> 'h':19,        \
>                   'i':23, 'j':29, 'k':31, 'l':37, 'm':41, 'n':43, 'o':
> 47, 'p':53,    \
>                   'q':59, 'r':61, 's':67, 't':71, 'u':73, 'v':79, 'w':
> 83, 'x':89,    \
>                   'y':97, 'z':101}
> ...

A somewhat nicer start: compute primes (naively) rather than typing
out the dictionary.

import string
from itertools import ifilter, count

def anagram_finder():
     primes = ifilter(lambda p: all(p % k for k in xrange(2, p)),
count(2))
     primeAlpha = dict(zip(string.lowercase, primes))
     ...

--
Paul Hankin



From honestguy1999 at gmail.com  Fri Oct 12 14:40:18 2007
From: honestguy1999 at gmail.com (honestguy1999 at gmail.com)
Date: Fri, 12 Oct 2007 18:40:18 -0000
Subject: How to set proxy in Python for flickr api
Message-ID: <1192214418.262370.310360@y27g2000pre.googlegroups.com>

Hi, everyone, I am using beej's flickr api in Python. For some reason
I have to bypass the firewall using a proxy. I read the urllib
reference and set http_proxy="my proxy". But it didn't work. I can't
even get authenticated. Is there anyway that we can set the proxy?



From mridula.ccpl at gmail.com  Wed Oct 10 02:13:51 2007
From: mridula.ccpl at gmail.com (mridula)
Date: Wed, 10 Oct 2007 11:43:51 +0530
Subject: button binding isn't triggering event like it's supposed to
Message-ID: <33dffc910710092313y2e95ba25hff86d46467727b35@mail.gmail.com>

hi.

i am trying to learn event binding. i have a form with a couple of buttons
for different tags, which all call the same function. the text on the
buttons changes from record to record. this is the problem area:

    def showrecords(self):
        """this function updates the form labels to show the current
record"""
        global gmax
        global gctr
        global CurrTitle
        global CurrAuthor
        global CurrTag1
        global CurrTag2
        global CurrTag3
        global CurrTag4
        global CurrTag5
        global CurrAbstract
        global CurrLocation
        global CurrID
        global HuntFor

        self.Lbn.config(text=gmax)
        self.Lbnof.config(text=gctr+1)
        self.LbTitle.config(text=CurrTitle, justify=LEFT)
        self.LbName.config(text=CurrAuthor)
        self.LbPath.config(text=CurrLocation)
        self.BtTag1.bind('<Button-1>',self.calltotags(tag=CurrTag1))
        self.BtTag1.config(text=CurrTag1)
        self.BtTag2.bind('<Button-1>',self.calltotags(tag=CurrTag2))
        self.BtTag2.config(text=CurrTag2)
        self.BtTag3.bind('<Button-1>',self.calltotags(tag=CurrTag3))
        self.BtTag3.config(text=CurrTag3)
        self.BtTag4.bind('<Button-1>',self.calltotags(tag=CurrTag4))
        self.BtTag4.config(text=CurrTag4)
        self.BtTag5.bind('<Button-1>',self.calltotags(tag=CurrTag5))
        self.BtTag5.config(text=CurrTag5)
        self.LbAbs.config(text=CurrAbstract)

    def calltotags(event, tag):
        # This function sets the search variable HuntFor value, and calls
the tagwork class.
        global HuntFor
        global toggle
        HuntFor=tag
        toggle="Tagcluster"
        print HuntFor
        tagwork()

when i click on the buttons, none of them call the function. i only see the
huntfor value in the prompt when i load the program. can someone please
enlighten me as to why this happens? (the buttons are loaded on the root
window in an earlier function, and i have the same problem even if i try
binding the events there)

also, can someone suggest a good (and free!) code editor for python please?

thanks in advance.
mridula.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/7cf6e85e/attachment.html>

From salvatore.didio at gmail.com  Sat Oct 13 04:55:59 2007
From: salvatore.didio at gmail.com (Salvatore)
Date: Sat, 13 Oct 2007 10:55:59 +0200
Subject: Python in HTML Application (HTA)
In-Reply-To: <47108428$0$25937$ba4acef3@news.orange.fr>
References: <47108428$0$25937$ba4acef3@news.orange.fr>
Message-ID: <4710879b$0$27403$ba4acef3@news.orange.fr>

In fact, whatever I do in "infoSystem" (modifiying style attributes of 
an object, change cursor appearance...), changes are only reflected
at the end of the function call ...


Salvatore a ?crit :
> Hello,
> 
> I encounter a display problem in one of my script
> 
> ...
> ...
> def setValue(divid,data):
>     elt = document.getElementById(divid)
>     elt.innerHTML = data
> 
> def infoSystem():
>     setValue("info","Please Wait")      #update div "info"
>     c = os.popen(cmdDisk%Server).read()
>     setValue('tabcentre',c)
> ...
> ...
> 
> When I call 'infoSystem', the 'info' div
> is only updated at the end of the 'infoSystem' call.
> Did someone have an explication of that behavior ?
> 
> Regards
> 
> Salvatore
> 
> 
> 


From korovev76 at gmail.com  Fri Oct 26 09:59:51 2007
From: korovev76 at gmail.com (korovev76 at gmail.com)
Date: Fri, 26 Oct 2007 06:59:51 -0700
Subject: tuples within tuples
In-Reply-To: <5oe73cFmh2htU1@mid.uni-berlin.de>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
	<5oe73cFmh2htU1@mid.uni-berlin.de>
Message-ID: <1193407191.002389.17680@v3g2000hsg.googlegroups.com>


> Resolve *what*?  The problem isn't clear yet; at least to me.  Above you
> say what you get.  What exactly do you want?  Examples please.
>


Sorry for my poor english, but I meant: how can I obtain a list of A
and C starting from something like this?

(A,B,C,D)
that could be
('tagA', None, [('tagB', None, ['bobloblaw], None)], None)
but also
('tagA', None, description, None)
when I don't know if C is a tuple or not?

I guess that, at least,  within the cicle I may test if C is a tuple
or not.. And then apply the same cicle for C... and so on

Am i right?


ciao
korovev






ciao
korovev



From lasses_weil at klapptsowieso.net  Thu Oct  4 10:49:50 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 04 Oct 2007 16:49:50 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <mailman.1503.1191498918.2658.python-list@python.org>
References: <13frd6vtarbee75@corp.supernews.com>	<fdtsfu$iq6$03$1@news.t-online.com>	<fdvn34$odf$1@orkan.itea.ntnu.no>	<85ve9ov971.fsf@lola.goethe.zz>	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>	<47041303$0$13930$fa0fcedb@news.zen.co.uk>	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>	<fe26tn$vs0$5@lust.ihug.co.nz>	<mailman.1501.1191493515.2658.python-list@python.org>	<fe2jdd$84p$1@lust.ihug.co.nz>
	<mailman.1503.1191498918.2658.python-list@python.org>
Message-ID: <4704fd8e$0$16099$9b4e6d93@newsspool1.arcor-online.net>

Steve Holden wrote:
> Lawrence D'Oliveiro wrote:
>> In message <mailman.1501.1191493515.2658.python-list at python.org>, Steve
>> Holden wrote:
>>
>>> Lawrence D'Oliveiro wrote:
>>>
>>>> In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>, George Neuner
>>>> wrote:
>>>>
>>>>> The Christian Bible says "In the beginning was the Word..."
>>>> Which is an English mistranslation from the Greek "logos".
>>> So, now you're telling me that the Garden of Eden was actually a
>>> *marketing campaign*?
>>
>> Different Bible book, different author, different original language.
> 
> So Genesis was written in Hebrew? I have no clue as to where the 
> manuscripts were found.
> 
Am I missing a joke here? What are you talking about?

Different book? From what book would the first sentence in the Bible be, 
if not from the first book (yeah yeah, from the publisher, haw-haw :-|)?

And Genesis and all other of Moe's books where written in Hebrew. No 
doubt about that. Its (part of) the /Hebrew/ Bible, after all. 
<URL:http://en.wikipedia.org/wiki/Torah>

I can't program with discussions like this going on ;)
/W


From ldo at geek-central.gen.new_zealand  Tue Oct  2 02:34:29 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 02 Oct 2007 19:34:29 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
Message-ID: <fdsopm$kd6$4@lust.ihug.co.nz>

In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
Kern wrote:

> Not all of the modules in a package are imported by importing the
> top-level package.

You can't import packages, only modules.

> os.path is a particularly weird case because it is just an alias to the
> platform-specific path-handling module; os is not a package.

os is a module, os.path is a variable within that module. That's all there
is to it.


From will at willNOmcguganSPAM.com  Sun Oct 14 10:28:32 2007
From: will at willNOmcguganSPAM.com (Will McGugan)
Date: Sun, 14 Oct 2007 15:28:32 +0100
Subject: Order of tuples in dict.items()
Message-ID: <47122790$0$8421$db0fefd9@news.zen.co.uk>

Hi,

If I have two dictionaries containing identical values, can I be sure 
that the items() method will return tuples in the same order?

I tried an experiment with CPython and it does appear to be the case.

 >>> a=dict(a=1, b=1, c=2)
 >>> b=dict(c=2, a=1, b=1)
 >>> a
{'a': 1, 'c': 2, 'b': 1}
 >>> b
{'a': 1, 'c': 2, 'b': 1}
 >>> a.items()
[('a', 1), ('c', 2), ('b', 1)]
 >>> b.items()
[('a', 1), ('c', 2), ('b', 1)]

Can I rely on this behavior?

Regards,

Will McGugan

blog: http://www.willmcgugan.com


From steven.bethard at gmail.com  Thu Oct 25 16:26:49 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 25 Oct 2007 14:26:49 -0600
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <1193338993.100383.191300@o80g2000hse.googlegroups.com>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
	<4720c5c3$0$20084$426a74cc@news.free.fr>
	<1193338993.100383.191300@o80g2000hse.googlegroups.com>
Message-ID: <HLudnTakINiXYb3anZ2dnUVZ_ualnZ2d@comcast.com>

Adam Donahue wrote:
>>>> class X( object ):
> ...     def c( self ): pass
> ...
>>>> X.c
> <unbound method X.c>
>>>> x = X()
>>>> x.c
> <bound method X.c of <__main__.X object at 0x81b2b4c>>
> 
> If my interpretation is correct, the X.c's __getattribute__ call knows
> the attribute reference is via a class, and thus returns an unbound
> method (though it does convert the value to a method).

No, that's wrong. It's not the __getattribute__ of "X.c", it's the 
__getattribute__ of "X" itself::

     >>> type.__getattribute__(X, 'c')
     <unbound method X.c>
     >>> X.c.__getattribute__('c')
     Traceback (most recent call last):
       File "<interactive input>", line 1, in <module>
     AttributeError: 'function' object has no attribute 'c'

In the former case, we use the type's __getattribute__, and we get the 
unbound method as expected.  In the latter case, we ask the unbound 
method object for an attribute which it doesn't have

Basically, classes define a __getattribute__ that looks something like::

     def __getattribute__(self, name):
         value = object.__getattribute__(self, name)
         if hasattr(value , '__get__'):
            return value .__get__(None, self)
         return value

For more information, read:

     http://users.rcn.com/python/download/Descriptor.htm

STeVe


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 22:46:09 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 02:46:09 -0000
Subject: How to "dereference" an iterator?
References: <496954360710101601s5cc774dby16f01ba532ef096e@mail.gmail.com>
	<mailman.54.1192059622.927.python-list@python.org>
Message-ID: <13gr3jhgkvvahbf@corp.supernews.com>

The original post seems to have been eaten, so I'm replying via a reply. 
Sorry for breaking threading.

> On Wed, 2007-10-10 at 18:01 -0500, Robert Dailey wrote:
>> Hi,
>> 
>> Suppose I wanted to manually iterate over a container, for example:
>> 
>> mylist = [1,2,3,4,5,6]
>> 
>> it = iter(mylist)
>> while True:
>>     print it
>>     it.next()
>> 
>> In the example above, the print doesn't print the VALUE that the
>> iterator currently represents, it prints the iterator itself. How can I
>> get the value 'it' represents so I can either modify that value or
>> print it? Thanks.

it = iter(mylist)
while True:
    print it.next()

but that will eventually end with an exception. Better to let Python 
handle that for you:

it = iter(mylist)
for current in it:
    print current

Actually, since mylist is already iterable, you could just do this:

for current in mylist:
    print current

but you probably know that already.


-- 
Steven.


From skip at pobox.com  Wed Oct  3 09:45:07 2007
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 3 Oct 2007 08:45:07 -0500
Subject: Looking for volunteer to help debug SpamBayes problem
Message-ID: <18179.40163.894015.238654@montanaro.dyndns.org>

We've had some reports of a UnicodeDecodeError in SpamBayes by people using
its IMAP filter.  I'm unable to reproduce it with other SpamBayes
applications I use and don't have a suitable IMAP setup in which to test it.
This problem is holding up the 1.1 release of SpamBayes.  If you always
wanted to give SpamBayes a try and have access to IMAP, this could be the
chance you've been waiting for.  Just reply to me (skip at pobox.com) and I'll
help you get set up.

Thanks,

-- 
Skip Montanaro - skip at pobox.com - http://www.webfast.com/~skip/


From deets at nospam.web.de  Tue Oct 16 04:55:19 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 16 Oct 2007 10:55:19 +0200
Subject: Python's coming... from unexpected angles.
Message-ID: <5njcjpFil587U1@mid.uni-berlin.de>

Just found this:

http://feeds.feedburner.com/~r/boingboing/iBag/~3/170523979/french-lady-finds-py.html

I do believe that Python should be somewhat more upfront to brandish it's
merits - but then, sneaky ways are ok with me to...

Diez


From jcd at sdf.lonestar.org  Fri Oct 26 18:58:32 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Fri, 26 Oct 2007 18:58:32 -0400
Subject: Going past the float size limits?
In-Reply-To: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
Message-ID: <47227118.2090409@sdf.lonestar.org>

jimmy.musselwhite at gmail.com wrote:
> Hello all
> It would be great if I could make a number that can go beyond current
> size limitations. Is there any sort of external library that can have
> infinitely huge numbers? Way way way way beyond say 5x10^350 or
> whatever it is?
>
> I'm hitting that "inf" boundary rather fast and I can't seem to work
> around it.
>
> Thanks!
>
>   
hmm.

Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
(Intel)] on win32
<snip>
>>> 5 * (10 ** 700)
50000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000L


Do you really need more than 700 places of precision?  Once your numbers
are that large, surely you can use integer math, right? (FYI 5 * (10 **
10000) works just as well.

Cheers,
Cliff


From lasses_weil at klapptsowieso.net  Wed Oct  3 16:11:47 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Wed, 03 Oct 2007 22:11:47 +0200
Subject: spam kontrol
In-Reply-To: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
Message-ID: <4703f783$0$4533$9b4e6d93@newsspool3.arcor-online.net>

oruccim at gmail.com wrote:
> hii
> ? think you know spam page is the most pest for net user.I want
> distinguish spam page to usefull page
> if you have a idea whit  this problem pleas share to me
> thank you
> 
GIYF:
<URL:http://www.google.com/search?hl=en&safe=off&q=spam+detection+python&btnG=Search>

Spam detection a rather intricate problem, so you'll have to do a lot of 
reading and experimenting to do it efficiently.

Maybe you can search for stuff like text-mining, n-gram, vector-space 
model, information retrieval, etc.

/W
(I have no concrete tips, sorry)


From adam.donahue at gmail.com  Fri Oct 26 14:33:06 2007
From: adam.donahue at gmail.com (Adam Donahue)
Date: Fri, 26 Oct 2007 18:33:06 -0000
Subject: Bypassing __getattribute__ for attribute access
In-Reply-To: <47218e42$0$6578$426a74cc@news.free.fr>
References: <1193324851.162883.59500@y42g2000hsy.googlegroups.com>
	<4720c5c3$0$20084$426a74cc@news.free.fr>
	<1193338993.100383.191300@o80g2000hse.googlegroups.com>
	<4721071f$0$12108$426a74cc@news.free.fr>
	<mailman.461.1193347826.13605.python-list@python.org>
	<47218e42$0$6578$426a74cc@news.free.fr>
Message-ID: <1193423586.590922.98490@o3g2000hsb.googlegroups.com>

Thank you all for the detailed replies, I appreciate it.  I only read
up on this yesterday morning, but I feel I've gotten a lot of insight
in a short time thanks to your contributions to this thread.  Useful
all around!

Adam

On Oct 26, 2:50 am, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> Chris Mellon a ?crit :
>
> > On Thu, 2007-10-25 at 23:13 +0200, Bruno Desthuilliers wrote:
> > <snip excellent breakdown>
>
> <blush />
>
> >> Dynamically adding methods to classes is pretty
> >> straightforward, the tricky point is to dynamically add methods to
> >> instances, since the descriptor protocol is only triggered for class
> >> attributes. But you obviously found how to do it using func.__get__(obj,
> >> type(obj)) !-)
>
> > This is the greasy, getting your hands dirty way. I vastly prefer (and
> > reccomend) using the new module:
>
> Indeed.




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct  8 11:06:44 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 08 Oct 2007 17:06:44 +0200
Subject: Variable scoping rules in Python?
In-Reply-To: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
References: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
Message-ID: <470a4758$0$9150$426a74cc@news.free.fr>

joshua.davies at travelocity.com a ?crit :
> Ok, I'm relatively new to Python (coming from C, C++ and Java).  I'm
> working on a program that outputs text that may be arbitrarily long,
> but should still line up, so I want to split the output on a specific
> column boundary.

FWIW :
http://docs.python.org/lib/module-textwrap.html


>  Since I might want to change the length of a column,
> I tried defining the column as a constant (what I would have made a
> "#define" in C, or a "static final" in Java).  I defined this at the
> top level (not within a def), and I reference it inside a function.
> Like this:
> 
> COLUMNS = 80
> 
> def doSomethindAndOutputIt( ):
>   ...
>   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
>     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     ..
> 
> etc. etc.  It works fine, and splits the output on the 80-column
> boundary just like I want.
> 
> Well, I decided that I wanted "COLUMNS = 0" to be a special "don't
> split anywhere" value, so I changed it to look like this:
> 
> COLUMNS = 80
> 
> def doSomethindAndOutputIt( ):
>   ...
>   if COLUMNS == 0:
>     COLUMNS = len( output[ 0 ] )
 >
>   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
>     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     ..

Since you don't want to modify a global (and even worse, a CONSTANT), 
the following code may be a bit cleaner:

def doSomethindAndOutputIt( ):
   ...
   if COLUMNS == 0:
      columns = len( output[ 0 ] )
   else:
      columns = COLUMNS
   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
      print output[0][ i * columns : i * columns + ( columns - 1 ) ]
   ..


> Now, when I run it, I get the following error:
> 
> Traceback (most recent call last):
>   File "Test.py", line 140, in ?
>     doSomethingAndOutput( input )
>   File "Test.py", line 123, in doSomethingAndOutput
>     if COLUMNS == 0:
> UnboundLocalError: local variable 'COLUMNS' referenced before
> assignment
> 
> I went back and re-read chapter 13 of "Learning Python", which talks
> about variable scoping rules, and I can't figure out why Python is
> saying this variable in Unbound.  It works if I insert:
> 
>   global COLUMNS
> 
> before the "if" statement... but I don't understand why.  Is the
> interpreter scanning my entire function definition before executing
> it, recognizing that I *might* assign COLUMNS to a value, and deciding
> that it's a local on that basis?

You name it. That's *exactly* what happens.



From Graham.Dumpleton at gmail.com  Wed Oct 10 18:59:58 2007
From: Graham.Dumpleton at gmail.com (Graham Dumpleton)
Date: Wed, 10 Oct 2007 22:59:58 -0000
Subject: PYTHONPATH on OS X
In-Reply-To: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
References: <1192053645.223787.320580@y42g2000hsy.googlegroups.com>
Message-ID: <1192057198.980192.238250@22g2000hsm.googlegroups.com>

On Oct 11, 8:00 am, "mhearne808[insert-at-sign-here]gmail[insert-dot-
here]com" <mhearne... at gmail.com> wrote:
> I'm missing something major here.  I'm trying to add a directory to my
> python path using the PYTHONPATH environment variable, and it's being
> ignored by the Python interactive shell.
>
> Below is a capture of what I did.  Note that my newfolder appears
> nowhere on the list of directories in sys.path.  How do I get Python
> to pay attention to my shell variables?
>
> Using bash on OS X 10.4.10.
>
> %:~ user$ echo $PYTHONPATH
>
> %:~ user$ PYTHONPATH=/Users/user/newfolder
> %:~ user$ echo $PYTHONPATH
> /Users/user/newfolder
> %:~ user$ python
> Python 2.5.1 (r251:54863, Aug 10 2007, 10:46:58)
> [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.>>> import sys
> >>> sys.path
>
> ['', '/usr/local/lib/python2.5/site-packages/
> setuptools-0.7a1dev_r56320-py2.5.egg', '/usr/local/lib/python2.5/site-
> packages/ipython1-0.9alpha2-py2.5.egg', '/usr/local/lib/python2.5/site-
> packages/SQLAlchemy-0.4.0beta5-py2.5.egg', '/usr/local/lib/python2.5/
> site-packages/MySQL_python-1.2.2-py2.5-macosx-10.3-i386.egg', '/usr/
> local/lib/python25.zip', '/usr/local/lib/python2.5', '/usr/local/lib/
> python2.5/plat-darwin', '/usr/local/lib/python2.5/plat-mac', '/usr/
> local/lib/python2.5/plat-mac/lib-scriptpackages', '/usr/local/lib/
> python2.5/lib-tk', '/usr/local/lib/python2.5/lib-dynload', '/usr/local/
> lib/python2.5/site-packages', '/usr/local/lib/python2.5/site-packages/
> PIL']

You need to export the environment variable.

  export PYTHONPATH

Graham



From gherzig at fmed.uba.ar  Wed Oct  3 12:42:09 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Wed, 03 Oct 2007 13:42:09 -0300
Subject: migrating to packages
Message-ID: <4703C661.50009@fmed.uba.ar>

Hi all. I have a single file with several classes, wich i want to 
separate into several packages.
The big file is named, say MYCLASES, and contains a class named 
A(object), and B(A).

We have been using this MYCLASES in the
from MYCLASES import B syntax, but i cant reproduce this syntax using 
packages. Im forced to write from PACKAGE.B import *, and if that means 
i have to touch so many files, that would really be a problem to me. 
There is (i cant find it yet) a place where i can read about that kind 
of package 'migration' situation?

Because i *really* want to keep the FROM PACKAGE import B syntax.

Thanks!
Gerardo


From bh at izb.knu.ac.kr  Sun Oct  7 12:23:35 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Mon, 08 Oct 2007 01:23:35 +0900
Subject: Top Programming Languages of 2013
In-Reply-To: <47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
References: <mailman.1621.1191737112.2658.python-list@python.org>
	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>
	<47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1191774215.1644.57.camel@viola.izb.knu.ac.kr>

On Sun, 2007-10-07 at 17:54 +0200, Wildemar Wildenburger wrote:
> Kay Schluehr wrote:
> > On Oct 7, 8:05 am, Dick Moores <r... at rcblue.com> wrote:
> >> <http://www.redcanary.ca/view/top-programming>
> >>
> >> Dick Moores
> > 
> > Despite my doubts that Ajax and .NET will be programming languages in
> > 2013 a more interesting question is: what could push Python forward
> > s.t. it eats such a large piece of the PL cake?
> > 
> import friends
> import sex
> 
> try:
>      sex.have()
> except ErrectionError, PrematureError:
>      pass
> finally:
>      sex.brag(friends)

Good! But......................... 
I think a kiss is elegant more than a sex.
What do you think of?

-- 
Byung-Hee HWANG <bh at izb.knu.ac.kr>

Schshschshchsch.
		-- The Gorn, "Arena", stardate 3046.2


From ensiferum_ at hotmail.com  Thu Oct 18 18:45:23 2007
From: ensiferum_ at hotmail.com (Sami Vaisanen)
Date: Fri, 19 Oct 2007 01:45:23 +0300
Subject: Extending Python with C API
References: <c69d11d00709131805j1c39dc1w47ec39e914a72191@mail.gmail.com>
	<mailman.513.1189733202.2658.python-list@python.org>
Message-ID: <pan.2007.10.18.22.45.19.748622@hotmail.com>

On Thu, 13 Sep 2007 21:26:33 -0400, Carsten Haese wrote:

> On Thu, 2007-09-13 at 18:05 -0700, Thierry Masson wrote:
>> Hello,
>> 
>> I'm trying to use the C API to extend Python. I've looked at various
>> books and web sites (including the docs at python.org) and I can't get
>> any of the samples to work. Below is a very minimalist example that
>> I'm trying to get working and I was wondering if someone could tell me
>> where I'm going wrong. It's probably something very obvious to those
>> familiar with this technique. 
>>[snip...]
>> The setup script builds the library OK, and I've verified that
>> gtestmodule.so is getting created. But when I try to run a test script
>> ( test.py, above) that uses the library, I get this error:
>> 
>> Traceback (most recent call last):
>>   File "test.py", line 2, in ?
>>     import gtestmodule
>> ImportError: ./gtestmodule.so: undefined symbol: PyBuildValue 
> 
> Your module C code uses an unknown function by the name of PyBuildValue.
> The actual name of the function you mean is Py_BuildValue.
> 
> HTH,



void get_python_exception(string& message, string& traceback)
{
    GIL g;
 
    PyObject* type  = NULL;
    PyObject* value = NULL;
    PyObject* trace = NULL;
 
    PyErr_Fetch(&type, &value, &trace);
 
    py_ref ref_type(type);
    py_ref ref_value(value);
    py_ref ref_trace(trace);
 
    py_ref name(PyString_FromString("traceback"));
    py_ref module(PyImport_Import(name.get()));
    if (module)
    {
        py_ref fun(PyObject_GetAttrString(module.get(), "format_exc"));
        if (fun)
        {
            PyErr_Restore(type, value, trace);
            ref_type.release();
            ref_value.release();
            ref_trace.release();
 
            py_ref ret(PyObject_CallObject(fun.get(), NULL));
            if (ret && PyString_Check(ret.get()))
            {
                char* str = PyString_AsString(ret.get());
                message = str;
                traceback = "traceback not available";
                return;
            }
        }
    }
    message   = "message not available";
    traceback = "traceback not available";
}

str evaluates to "None", any ideas what gives here? I've also tried to
call the traceback with a different function, such as
PyObject_CallFunctionObjArgs but the result is still same.

Thanks





From steve at holdenweb.com  Tue Oct  2 20:42:43 2007
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 02 Oct 2007 20:42:43 -0400
Subject: Question about quoting style.
In-Reply-To: <fdrr61$ipf$1@daisy.noc.ucla.edu>
References: <mailman.1366.1191268378.2658.python-list@python.org>	<470153d9$0$27239$426a74cc@news.free.fr>
	<fdrr61$ipf$1@daisy.noc.ucla.edu>
Message-ID: <fduoi0$87n$1@sea.gmane.org>

James Stroud wrote:
> Bruno Desthuilliers wrote:
>> First point is that Python has no "variable interpolation".
> 
> If you squint, it kind of does*:
> 
>     >>> print '%(language)s has %(#)03d quote types.' % \
>               {'language': "Python", "#": 2}
>     Python has 002 quote types.
> 
> You might think if the dict as a name space and the formatting operation 
> as performing interpolation--but this take on formatting might be a stretch.
> 
> James
> 
> * http://docs.python.org/lib/typesseq-strings.html

http://docs.python.org/lib/node40.html

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From bj_666 at gmx.net  Tue Oct 23 12:48:24 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 16:48:24 GMT
Subject: greatest and least of these...
References: <mailman.379.1193155001.13605.python-list@python.org>
Message-ID: <5o6muoFld8c9U5@mid.uni-berlin.de>

On Tue, 23 Oct 2007 11:56:33 -0400, Shawn Minisall wrote:

> I just wrote a program to let the user input a series of whole numbers 
> and tell them which is least and which is greatest based off of a menu.  
> However, the menu isn't kicking in after they pick a number.  I included 
> a while statement for a loop just for the menu and compared it to my 
> other programs that have a similar setup and are working, but I'm 
> stumped.   Here's the program...
> 
> def main():
> 
>     #define and initialize variables
>     #choice as int
>     choice = 0
>     #number as int
>     number = 0
> 
>     #intro
>     print "WELCOME TO THE GREATEST AND LEAST NUMBER PROGRAM!"
>     print
> 
>     #Menu loop
>     while choice != 2:
>         #display menu
>         print "Please choose from the following menu: "
>         print "1. Enter a number"
>         print "2. Exit"
>         print
>        
>         #prompt user for their menu choice
>         choice = input("Enter your choice here: ")
>            
>         #if statements to determine which choice
>         if choice == 1:
>             nums = []
>             while number >=0:
>                 nums.append(number)
>                 number = input("Please enter a number.")

Maybe you want to exchange those two last lines!?

>         elif choice == 2:
>             print "Have a great day!"
> 
>             if len(nums) > 0:
>                 print "The smallest number that you entered was:",min(nums)
>                 print "The largest number that you entered was:",max(nums)

> Also, if they quit the program with choice #2 and entered numbers, it 
> should display the greatest and least of them.  If they just started and 
> didn't enter anything and want to quit, I get an error message saying 
> UnboundLocalError: local variable 'nums' referenced before assignment.  
> Isn't the if statement supposed to keep python from going there since if 
> they didn't enter any input, the length of the list should just be zero.

Which list?  If the branch for ``choice == 1`` isn't executed then the
list will never be created an the name `nums` doesn't exist.

Ciao,
	Marc 'BlackJack' Rintsch


From hniksic at xemacs.org  Fri Oct 19 03:15:33 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Fri, 19 Oct 2007 09:15:33 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
	<1192724835.765738.141790@q5g2000prf.googlegroups.com>
	<87przc1im7.fsf@mulj.homelinux.net>
	<1192726872.921589.249670@i38g2000prf.googlegroups.com>
	<87lka01f8k.fsf@mulj.homelinux.net>
	<1192771505.510311.167980@q5g2000prf.googlegroups.com>
Message-ID: <87ejfr1soa.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

>> Use a different column type for cache2's column, one more appropriate
>> for storing binary characters (perhaps BYTEA for Postgres).  Don't
>> forget to also use a bind variable, something like:
>>
>> cursor.execute("INSERT INTO cache2 VALUES (?)", a)
>>
>> Using "INSERT ... ('%s')" % (a) won't work, since the huge binary
>> string in a can contain arbitrary characters, including the single
>> quote.
>
> I tryed:
> cursor.execute("INSERT INTO cache2 VALUES (?)", a)

Why are you ignoring the first sentence: "Use a different column type
for cache2's column, ..."?  The use of bind variables in INSERT will
work only *after* you do the rest of the work.


From pyth0nc0d3r at gmail.com  Tue Oct  2 23:02:03 2007
From: pyth0nc0d3r at gmail.com (Lamonte Harris)
Date: Tue, 2 Oct 2007 22:02:03 -0500
Subject: Can't seem to find a Python Key detector.
Message-ID: <eb79828c0710022002k318daa02q4cdcdc047375b32b@mail.gmail.com>

I'm looking for a module that acts on the input of the keyboard.  Something
similar to pygame's key events, but something just easier to use not based
on pygame stuff.  If that makes any since.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071002/141c9e6d/attachment.html>

From michele.simionato at gmail.com  Mon Oct  8 00:35:59 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Mon, 08 Oct 2007 04:35:59 -0000
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
In-Reply-To: <fecbjj$5rn$1@panix3.panix.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com>
Message-ID: <1191818159.742629.234980@19g2000hsx.googlegroups.com>

On Oct 8, 12:27 am, a... at pythoncraft.com (Aahz) wrote:
>
> Aaaugh!  Don't use __slots__!

+1 QOTW  ;)

    Michele Simionato



From jwkenne at attglobal.net  Sat Oct  6 18:08:53 2007
From: jwkenne at attglobal.net (John W. Kennedy)
Date: Sat, 06 Oct 2007 18:08:53 -0400
Subject: which language allows you to change an argument's value?
In-Reply-To: <jlk0g35iek44jhoqpbutp1ecj2e2c9dte6@4ax.com>
References: <1191149233.346818.246170@22g2000hsm.googlegroups.com>
	<jlk0g35iek44jhoqpbutp1ecj2e2c9dte6@4ax.com>
Message-ID: <WHTNi.148$3v7.20@newsfe12.lga>

Roedy Green wrote:
> On Sun, 30 Sep 2007 10:47:13 -0000, Summercool
> <Summercoolness at gmail.com> wrote, quoted or indirectly quoted someone
> who said :
>> and now n will be 3.  I think C++ and PHP can let you do that, using
>> their reference (alias) mechanism.  And C, Python, and Ruby probably
>> won't let you do that.  What about Java and Perl?

> Seem to me you could in FORTRAN and Pascal, and maybe even Algol. 

FORTRAN generally looked like call by reference, but was often actually 
implemented element variables as copy-in at call time and copy-out at 
return time. In standard older FORTRAN, the effective results were the 
same. I don't know how things stand with modern Fortran, where some new 
features have made the assumption that copy-in-copy-out is equivalent to 
reference more dangerous. Ada is /defined/ as using copy-in-copy-out for 
element variables.

ALGOL had a weird "by name" convention. The semantics were essentially 
that, for each argument, a closure (historically called a "thunk") was 
constructed, and every time the parameter was referenced, the 
corresponding closure was called. Theoretically elegant, but hideous to 
implement, and with bizarre side-effects in certain cases.
-- 
John W. Kennedy
Read the remains of Shakespeare's lost play, now annotated!
http://pws.prserv.net/jwkennedy/Double%20Falshood/index.html


From jgardner.jonathangardner.net at gmail.com  Tue Oct 30 18:42:42 2007
From: jgardner.jonathangardner.net at gmail.com (Jonathan Gardner)
Date: Tue, 30 Oct 2007 22:42:42 -0000
Subject: Arp request to get MAc Adress with IP address
In-Reply-To: <1193777850.795407.233750@i38g2000prf.googlegroups.com>
References: <1193777850.795407.233750@i38g2000prf.googlegroups.com>
Message-ID: <1193784162.990156.164430@o80g2000hse.googlegroups.com>

On Oct 30, 1:57 pm, amjad... at gmail.com wrote:
> Hello,
> I have a network on same subnet. I have an ip address of a machine.
> but i need to get its MAC Adress.
> Sendingf ARP request is the way i am taking.
>
> IS there any other way to get this MAC Adress in python.??
>
> Also does python go down to level 2 of TCP/IP model??
>

When you start talking about this kind of low-level stuff, you really
need to start thinking about your OS, not Python. How would you do
this task if you had to write in in C? Which system calls would you
need to make?

Once you figure that out, then it's a question how to make those
system calls from Python.



From horpner at yahoo.com  Wed Oct 17 16:36:21 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 17 Oct 2007 20:36:21 GMT
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<47166b47$0$5248$426a74cc@news.free.fr>
Message-ID: <9nuRi.39165$G23.10817@newsreading01.news.tds.net>

On 2007-10-17, Bruno Desthuilliers
<bdesth.quelquechose at free.quelquepart.fr> wrote:
> Ixiaus a ?crit :
>> val = 00110
>> 
>> as the integer 72 instead of returning 00110, why does Python
>> do that?
>
> Literal integers starting with '0' (zero) are treated as octal.
> It's a pretty common convention (like 0x for hexa). FWIW, PHP
> does just the same thing.
>
>> (and how can I get around it?)
>
> You can't. Python has no literal notation for binary integers
> so far. Literal notation for binary ints is not a common
> feature anyway.

You can obtain a practical workaround using the int built-in
function.

>>> int('110', 2)
6

-- 
Neil Cerutti


From stefan.arentz at gmail.com  Tue Oct  9 11:20:09 2007
From: stefan.arentz at gmail.com (Stefan Arentz)
Date: 09 Oct 2007 17:20:09 +0200
Subject: Native class methods
Message-ID: <87r6k4iac6.fsf@keizer.soze.com>


Is there an easy way to implement a specific method of a Python class
in C? Like a native method in Java? I would really like to do the
majority of my class code in Python and just do one or two methods
in C.

 S.



From tjreedy at udel.edu  Thu Oct  4 18:28:15 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 4 Oct 2007 18:28:15 -0400
Subject: Python "implements <interface>" equivalent?
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
Message-ID: <fe3pdu$904$1@sea.gmane.org>


"Wojciech Gryc" <wojciech at gmail.com> wrote in message 
news:1191510706.528876.261780 at 57g2000hsv.googlegroups.com...
| Hi,
|
| I recently started using Python and am extremely happy with how
| productive it's made me, even as a new user. I'm hoping to continue
| using the language for my research, and have come across a bit of a
| stumbling block.
|
| I'm a seasoned Java programmer and quite a big fan of interfaces...
| i.e. The idea that if I make a number of distinct classes that
| implement interface X, I can pass them all as parameters to functions
| or whatnot that require an X object.
|
| Is there something similar in Python?

As others have noted, without typechecks, Python code is generic.  For 
example, 'a+b' means "Try a.__add__(b).  If that does not work, try 
b.__radd__(a).  If that does not, raise an error."

| What I'd like to do is create a feature detection system for my work
| -- specifically, a general class / interface called "Feature" and then
| subclasses that implement functions like isFeaturePresent() in all of
| their different and unique ways. I'd love to hear how I can do this in
| Python.

If you have several methods (with multiple implementations), an abstract 
base class can be helpful:

class Feature(object):
    def isFeaturePresent(self):
        raise NotImplementedError
    def otherMethod(self):
        raise NotImplementedError
    # etc

Inherit from Feature (and possibly other classes -- Python has multiple 
inheritance) to make your subclasses.  Then put 'if not isinstance(arg, 
Feature): raise TypeError(func requires Features)' at the top of functions 
that work on Features.  If you call Feature methods more than once in a 
function, this save multiple checks or try-except blocks.

The cost, of course, is the inheritance requirement.

Terry Jan Reedy





From rcdailey at gmail.com  Fri Oct 19 18:15:25 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Fri, 19 Oct 2007 17:15:25 -0500
Subject: Python script for mobile platforms -- suggested?
In-Reply-To: <46C243E1.5020004@jayloden.com>
References: <496954360708121958m170b6cd2j8419802dcdd35482@mail.gmail.com>
	<496954360708131727o5276d5a5w57baff6cbea4c34c@mail.gmail.com>
	<46C12274.2070705@jayloden.com>
	<496954360708140842s2e5b7c6ctb7a40aa4099719db@mail.gmail.com>
	<46C243E1.5020004@jayloden.com>
Message-ID: <496954360710191515g63381f6ue1455464cf419d5b@mail.gmail.com>

On 8/14/07, Jay Loden <python at jayloden.com> wrote:
>
> XML is first and foremost a machine-parseable language, and a human-readable one second ;) I don't think this is particularly hard to read, but then I work with XML configuration files on a daily basis at work, so I may just be a terrible person to ask...
>
> I'm not sure I agree that you're not using XML as it was intended; you're mixing data and presentation, but it's still a document containing data. That's what XHTML is, and what the XML document definitions like OOXML are all about. Anyway, that's neither here nor there. My question would be a much simpler "why is this XML?".
>
> XML makes sense when you need a structured document, and sometimes that makes sense for configuration options or defining a structure, but it's not clear why you'd need it here. Is this something you're intending to make editable by the end user? If you're willing to replace it with Python scripts instead of XML documents, it sounds like maybe you're not worried about letting users edit the menus. If so, why not code the menus direct into the main C++ code? This would be faster, unless you need to frequently edit these menus.
>
> I think the best thing to do would be to take a step back and ask what it is that you're trying to do as the end result. What are your requirements; can you expect that Python will be installed already? Is the choice between parsing XML once with C++ or having to ship a Python interpreter with associated overhead? Once you have a set of requirements and determine what's most important to you it should make it easier to pick a solution. For instance, on a mobile device, you might simply not have the spare cycles that embedding a python interpreter would require versus a lightweight lib like TinyXML. Similarly, you'd have to ask yourself if the data is always static, or if you have a need for dynamic content (i.e. embedded scripting) within the menu definition.
>
> -Jay
>

Well, Ideally the python script would have a series of callback
methods that are triggered when specific predefined events occur in
that menu. For example, when the user presses the LEFT key, a callback
should be executed in the python script to perform various tasks. So
you'd do something like:

def OnKeyLeft():
    # Do something here...
    pass

However, I think the root of the problem is that I'm editing text
files directly to modify the look and feel of menus. Ideally, I'd have
a tool that allows a user to visually create a menu by interactively
creating controls and assigning them properties through a GUI
interface. However, in my specific case I was unable to make a tool
due to time restrictions.

I could, at the very least, use wxPython to make this tool, which
would output menu definitions in XML (which will be non-human readable
or editable), or perhaps even binary for quicker parsing by the game.


From gagsl-py2 at yahoo.com.ar  Tue Oct 16 04:34:11 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 16 Oct 2007 05:34:11 -0300
Subject: how to print a traceback?
References: <1192484478.553534.97740@e9g2000prf.googlegroups.com>
Message-ID: <op.tz97e9kxx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Tue, 16 Oct 2007 01:03:08 -0300, <sndive at gmail.com> escribi?:

> i'm struggling to get some proxy code working with liburl[2] and want
> to print
> some tracebacks in my class ProxyHTTPConnection::request().
> do i have to force an exception and print a backtrace in catch or
> can i just print the current stack?
> print_tb takes an argument and short of forcing an exception
> i don;t know where to get the current backtrace object from.

 from traceback import print_stack
print_stack()


-- 
Gabriel Genellina



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct  3 07:51:49 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 03 Oct 2007 13:51:49 +0200
Subject: List Question
References: <fdubt1$gp$1@solaris.cc.vt.edu>
	<1191360038.845477.170160@22g2000hsm.googlegroups.com>
	<mailman.1411.1191362300.2658.python-list@python.org>
Message-ID: <5mhe2lFdhg2jU1@mid.individual.net>

Pablo Ziliani wrote:

> <joke>
> 
> I always use this full-featured, all-inclusive, rock-solid version
> (see the try/except block):
> 
> count = i = 0
> x = 1
> y = [1,2,3,4,5,1,2,3,4,1,2,1]
> try:
>     while count < 3:
>         if y[i] == x:
>             count += 1
>         i += 1
> except RuntimeError:
>     pass
> except IndexError:
>     pass
> else:
>     print x
> 
> </joke>

Wrong, this must be just

except:
    pass

Regards&CNRE,


Bj?rn

-- 
BOFH excuse #141:

disks spinning backwards - toggle the hemisphere jumper.



From mensanator at aol.com  Fri Oct  5 13:34:34 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Fri, 05 Oct 2007 10:34:34 -0700
Subject: novice list
In-Reply-To: <1191598977.515953.288720@50g2000hsm.googlegroups.com>
References: <mailman.1572.1191582075.2658.python-list@python.org>
	<87ir5lfxph.fsf@rudin.co.uk>
	<1191598977.515953.288720@50g2000hsm.googlegroups.com>
Message-ID: <1191605674.255826.100350@y42g2000hsy.googlegroups.com>

On Oct 5, 10:42 am, chris.monsa... at gmail.com wrote:
> On Oct 5, 10:22 am, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
>
> > Istv?n <uhum2... at freemail.hu> writes:
> > > Could somebody suggest me a novice Python list, please?
>
> > Here you go:
>
> > ['novice']
>
> > (Sorry, couldn't resist.)
>
> No no... I think he meant a "simple" list. Like, you know, a list
> novices can handle.
>
> I suggest the empty list []!

Actually, that's a very hard concept. Think about the behavior
of NULL in a database.



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct  3 02:49:37 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 08:49:37 +0200
Subject: List Question
In-Reply-To: <fdubt1$gp$1@solaris.cc.vt.edu>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
Message-ID: <47033b75$0$7365$426a74cc@news.free.fr>

brad a ?crit :
> How is this expressed in Python?
> 
> If x is in y more than three times:
>     print x
> 
> y is a Python list.


if y.count(x) > 3:
   print x


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 08:37:04 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 14:37:04 +0200
Subject: unit testing
In-Reply-To: <7xlkaifz4o.fsf@ruckus.brouhaha.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
Message-ID: <47054a3d$0$16347$426a74cc@news.free.fr>

Paul Rubin a ?crit :
> brad <byte8bits at gmail.com> writes:
> 
>>Does anyone else feel that unittesting is too much work? Not in
>>general, just the official unittest module for small to medium sized
>>projects?
> 
> 
> Yeah, unittest is sort of a Java-ism.  You might try the newer doctest
> module instead.

Or py.test or nose, which are both more complete than doctest and more 
pythonics than the unittest module.


From gavcomedy at gmail.com  Fri Oct  5 19:18:30 2007
From: gavcomedy at gmail.com (gavino)
Date: Fri, 05 Oct 2007 16:18:30 -0700
Subject: anyone know howto IRC to freenode over port 80?
Message-ID: <1191626310.008663.197600@d55g2000hsg.googlegroups.com>

anyone?



From jcd at sdf.lonestar.org  Tue Oct 30 11:25:24 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 30 Oct 2007 11:25:24 -0400
Subject: Iteration for Factorials
In-Reply-To: <47271f3e$1_3@news.bluewin.ch>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<47271f3e$1_3@news.bluewin.ch>
Message-ID: <20071030152524.GD11330@sdf.lonestar.org>

On Tue, Oct 30, 2007 at 01:09:38PM +0100, Boris Borcic wrote regarding Re: Iteration for Factorials:
> 
> Py-Fun wrote:
> > I'm stuck trying to write a function that generates a factorial of a
> > number using iteration and not recursion.  Any simple ideas would be
> > appreciated.
> > 
> 
> fact = lambda n : len(map([1].__imul__,range(1,n+1))[0])
> 

OK.  Now I've been sucked in.  How about this:

def fact(x):
	def f(x):
		if int(x) != x:
			raise ValueError
		elif x > 1:
			return f(x-1) ** x
		elif x == 1:
			return 10
		else:
			raise ValueError
	return len(str(f(x))) -1

The great part about this recursive solution is that you don't have to worry about the stack limit because performance degrades so quickly on the conversion to string!  fact(8) takes a little less than a second, fact(9) takes about a minute, and fact(10) takes more time than I had patience to wait for!

Cheers,
Cliff



From steve at holdenweb.com  Wed Oct 10 22:37:47 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 10 Oct 2007 22:37:47 -0400
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <v0tqg35skgv1jc3d1aelqp4t090sv70s77@4ax.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<v0tqg35skgv1jc3d1aelqp4t090sv70s77@4ax.com>
Message-ID: <470D8C7B.4080301@holdenweb.com>

Daniel Klein wrote:
> On Fri, 05 Oct 2007 07:44:46 -0400, Steve Holden <steve at holdenweb.com>
> wrote:
> 
>> I've just been told by the editors at Python Magazine that the first 
>> issue is out. It's all-electronic so anyone can download and read it. 
> 
> The website states that existing subcribers are notified of the
> availability of new issues automatically, yet I received no such
> notification.
> 
You'd better take that up wth the subscriptions department, then. I am 
sure they will be disappointed if it turns out they have failed to keep 
a promise.

Anyway, that failing apart, how do you like the magazine?

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct  8 18:47:23 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 22:47:23 -0000
Subject: Convert obejct string repr to actual object
References: <mailman.1680.1191871194.2658.python-list@python.org>
Message-ID: <13glcrr4o2jsl25@corp.supernews.com>

On Mon, 08 Oct 2007 21:19:50 +0200, Tor Erik S?nvisen
wrote:

> I don't want to use eval, since I can't trust the source sending the
> object.... I'm sure someone must have had the same need and created code
> for it... Maybe Pypy has what I need??? Haven't looked though...


For the benefit of those who think they can make eval "safe", start here:

http://effbot.org/zone/librarybook-core-eval.htm


Here's a good solution:

http://effbot.org/zone/simple-iterator-parser.htm



-- 
Steven.


From beema.shafreen at gmail.com  Sun Oct 28 10:13:39 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Sun, 28 Oct 2007 19:43:39 +0530
Subject: caluclating median distance
Message-ID: <aa405c1f0710280713y30cffbbcvf7c4805028ceab40@mail.gmail.com>

hi everybody,
                    I have a file
10000175    10000234    43    A_16_P03652190
10000277    10000336    387    A_16_P41582022
10000723    10000782    98    A_16_P03652191
10000880    10000932    270    A_16_P41582024
10001202    10001261    539    A_16_P41582025
10001800    10001859    16    A_16_P41582026
10001875    10001923    43    A_16_P21378376
10001966    10002011    361    A_16_P03652193
10002372    10002422    49    A_16_P21378377
10002471    10002527    118    A_16_P03652194
10002645    10002704    187    A_16_P41582029
10002891    10002941    130    A_16_P21378379
10003071    10003121    415    A_16_P03652195
10003536    10003595    -38    A_16_P03652196

how to calculate the median spacing of an data in the file basically
focusing on the third column of an file. say for example the median spacing
is to be 635. how do we programtically calculate the median spacing and sort
the file according to the third column's median spacing.
hope median we calculate  using (N+1)/2

can somebody help me in this point of view

regards
shafreen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071028/4d9a4c75/attachment.html>

From gnuist006 at gmail.com  Tue Oct  9 01:15:49 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 05:15:49 -0000
Subject: The fundamental concept of continuations
Message-ID: <1191906949.179197.217470@57g2000hsv.googlegroups.com>

Again I am depressed to encounter a fundamentally new concept that I
was all along unheard of. Its not even in paul graham's book where i
learnt part of Lisp. Its in Marc Feeley's video.

Can anyone explain:

(1) its origin
(2) its syntax and semantics in emacs lisp, common lisp, scheme
(3) Is it present in python and java ?
(4) Its implementation in assembly. for example in the manner that
pointer fundamentally arises from indirect addressing and nothing new.
So how do you juggle PC to do it.
(5) how does it compare to and superior to a function or subroutine
call. how does it differ.

Thanks a lot.

(6) any good readable references that explain it lucidly ?



From schmidt_florian at gmx.de  Mon Oct  1 14:33:28 2007
From: schmidt_florian at gmx.de (Florian Schmidt)
Date: Mon, 1 Oct 2007 20:33:28 +0200
Subject: Limits on search length
In-Reply-To: <47012B81.40100@altaregos.com>
References: <47012B81.40100@altaregos.com>
Message-ID: <20071001183327.GA3510@localdomain>

On Mon, Oct 01, 2007 at 11:16:49AM -0600, Daryl Lee wrote:
> ... But I have some very long ones, and a pattern like 
> r'".{272}"' fails miserably, even though I know I have at least one 
> 272-character string.

~>python
Python 2.4.4 (#2, Apr 26 2007, 00:02:45) 
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> data = "-" * 1024 + "l" * 272 + "*" * 1024
>>> m = re.search("l{272}", data)
>>> m.start(), m.end()
(1024, 1296)
or even bigger:
>>> data = "-" * 1024 + "l" * 2048+ "*" * 1024
>>> m = re.search("l{2048}", data)
>>> m.start(), m.end()
(1024, 3072)

so i dont think you are hitting an re matching limit.

could you post your searchPattern?

-- 
Florian Schmidt	// www.fastflo.de



From cadet.bramble at gmail.com  Tue Oct  2 16:35:31 2007
From: cadet.bramble at gmail.com (bramble)
Date: Tue, 02 Oct 2007 20:35:31 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191317352.082848.30060@g4g2000hsf.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<7xr6kez5aa.fsf@ruckus.brouhaha.com>
	<1191293650.355504.312590@n39g2000hsh.googlegroups.com>
	<1191317352.082848.30060@g4g2000hsf.googlegroups.com>
Message-ID: <1191357331.091076.140040@19g2000hsx.googlegroups.com>

On Oct 2, 5:29 am, Paul Boddie <p... at boddie.org.uk> wrote:
> On 2 Okt, 04:54, bramble <cadet.bram... at gmail.com> wrote:
>
> > Maybe the key I'm missing is this: maybe GvR and company think that a
> > language absolutely should come off-the-shelf with GUI toolkit
> > bindings. So, given that, they feel they've gotta pick just one, and
> > they've already got Tkinter and it works, so that's that. Is that it?
>
> Yes.

Ahh... Ok. Thanks, that explains it. At first, it hadn't ocurred to me
that anyone would want to provide a GUI toolkit binding along with a
popular general purpose programming language implementation. Moreover,
it *really* wouldn't occur to me that they'd also want to provide an
IDE (as Terry mentions in another reply). But then, I'm looking at
Python today, in 2007, at a time when Python has multiple high-quality
GUI toolkit bindings available, and when most editors and IDE's have
excellent Python support built-in.

Given that line of reasoning though, it seems odd to me that GvR and
Co. would still regard shipping those as part of Python proper as a
requirement for Py3k.



From gagsl-py2 at yahoo.com.ar  Tue Oct 30 22:20:37 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 23:20:37 -0300
Subject: Iteration for Factorials
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<47271f3e$1_3@news.bluewin.ch>
	<mailman.649.1193757936.13605.python-list@python.org>
	<1193769477.956629.232940@o38g2000hse.googlegroups.com>
Message-ID: <op.t01h4nh1x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 15:37:57 -0300, mensanator at aol.com  
<mensanator at aol.com> escribi?:

> On Oct 30, 10:25 am, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:

>> The great part about this recursive solution is that you don't have to  
>> worry about the stack limit because performance degrades so quickly on  
>> the conversion to string!  fact(8) takes a little less than a second,  
>> fact(9) takes about a minute, and fact(10) takes more time than I had  
>> patience to wait for!
>
> And the not-so-great part is that it raises an exception
> on fact(0) which makes it utterly useless for calculating
> combinations of m things taken n at a time: m!/n!*(m-n)!
>
> Why is it that no one seems able to get this right?

Uhmmm... don't be so serious, most of those recipes are a joke :)
Who cares about fact(0) when fact(10) can't be computed...? At least,  
that's how I see it, Nimo dixit.

-- 
Gabriel Genellina



From martin at v.loewis.de  Mon Oct 22 16:28:16 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 22 Oct 2007 22:28:16 +0200
Subject: Building sparc64 32/64-bit Python
In-Reply-To: <20071022165459.476c7a07@cube.tz.axivion.com>
References: <20071022165459.476c7a07@cube.tz.axivion.com>
Message-ID: <471D07E0.1050908@v.loewis.de>

> Is this possible or do I really have to install two complete but
> separate Pythons although most of the files are the same?

That configuration is not explicitly supported in the build process.

Notice that the "Python libraries" are not entirely platform
independent. On Sparc64, the byte code files may be different
from the byte code files on Sparc, if the source code contains
integer literals above 2**31. Such literals would be marshaled
as TYPE_LONG (l) on Sparc32, but as TYPE_INT64 (I) on Sparc64.

Regards,
Martin


From marcsgbrevkonto at gmail.com  Sun Oct  7 07:10:40 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 04:10:40 -0700
Subject: Newbie packages Q
Message-ID: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>

Hi All,

I do not understand the packages system in python. I have read this
http://docs.python.org/tut/node8.html a 100 times and I can not get it
to work.

I make a test app like this:
*******************************
Test/
      __init__.py (a empty file)
      apack/
               __init__.py (a empty file)
               atest.py
      bpack/
               __init__.py (a empty file)
               btest.py
*******************************
atest.py:
from Test.bpack import btest

def printA():
	print "This is Atest from Apack"

def printbtest():
	print btest.printB()

print printA()
print printbtest()
*******************************
btest.py:
from Test.apack import atest

def printB():
	print "This is Btest from Bpack"

def printatest():
	print atest.printA()

print printatest()
*******************************

All I get is an import error: ImportError: cannot import name x

I can remove the import statements an use the Test package quit normal
but when I try to make intra-pacage references I get the import error.

I must be missing something, could any one point me at what.

Thank you.



From michele.simionato at gmail.com  Tue Oct 16 09:15:44 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Tue, 16 Oct 2007 13:15:44 -0000
Subject: Integrating a GUI with an asyncore-based server
In-Reply-To: <1192539420.339683.285040@v23g2000prn.googlegroups.com>
References: <1192539420.339683.285040@v23g2000prn.googlegroups.com>
Message-ID: <1192540544.379455.231270@i13g2000prf.googlegroups.com>

On Oct 16, 2:57 pm, Giampaolo Rodola' <gne... at gmail.com> wrote:
> Hi there.
> Just for the heck of it I'd like to write a simple front-end for an
> asyncore-based server I wrote by using Tkinter.
> I wrote a simple graphical interface consisting of two buttons: "Start
> server" and "Stop server".
> The first button should start the asyncore main loop while the second
> should obviously stop it.
> Actually I can't find a valid solution for doing such a stuff since
> this is the first time I'm using a GUI toolkit.
> Which is the best approach to use in such case?
> Could someone point me in the right direction?

Twisted has Tkinter integration. If you don't want to use Twisted, you
could
run the asyncore loop in a separated thread with respect to the
Tkinter mainloop.

  Michele Simionato



From greg.ewing at canterbury.ac.nz  Mon Oct  8 05:26:37 2007
From: greg.ewing at canterbury.ac.nz (Greg Ewing)
Date: Mon, 08 Oct 2007 22:26:37 +1300
Subject: ANN: Pyrex 0.9.6.1
Message-ID: <mailman.1671.1191856398.2658.python-announce-list@python.org>

Pyrex 0.9.6.1 is now available:

   http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/

This version fixes a few minor problems that turned
up in the initial 0.9.6 release.

What is Pyrex?
--------------

Pyrex is a language for writing Python extension modules.
It lets you freely mix operations on Python and C data, with
all Python reference counting and error checking handled
automatically.


From martin at v.loewis.de  Tue Oct 16 11:05:48 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 16 Oct 2007 17:05:48 +0200
Subject: Build Python 2.5 against Tk 8.5
In-Reply-To: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>
References: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>
Message-ID: <4714D34C.4050603@v.loewis.de>

> I'd like to experiment with Tk 8.5 (now in beta) in my Python
> application, but Python 2.5 requires Tk 8.4.x.

Why do you say that? AFAIK, that's not the case.

Regards,
Martin


From kiilerix at gmail.com  Wed Oct 17 14:53:10 2007
From: kiilerix at gmail.com (kiilerix at gmail.com)
Date: Wed, 17 Oct 2007 18:53:10 -0000
Subject: Problem of Readability of Python
In-Reply-To: <1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
Message-ID: <1192647190.910650.98390@i38g2000prf.googlegroups.com>

On Oct 7, 10:24 pm, al... at mac.com (Alex Martelli) wrote:
> $ python -mtimeit -s'class A(object):pass' -s'a=A()' 'a.zop=23'

When I know that all instances of classes inheriting from object have
a namespace, then I would expect either that all objects have a
namespace or that it was inherited from object. I would expect
instantiating object to be the simplest and best way to get a
namespace.

But ...

>>> o = object()
>>> o.foo = 7
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'object' object has no attribute 'foo'
>>> o.__slot__
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'object' object has no attribute '__slot__'
>>> class O(object): pass
>>> o = O()
>>> o.foo = 7

That object is kind of "pure virtual" seems to me to be a confusing
special case without any advantages.

Why can't object be instantiated directly? Is that explained and
documented anywhere?

/Mads



From ggpolo at gmail.com  Tue Oct 23 09:14:12 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Tue, 23 Oct 2007 11:14:12 -0200
Subject: pure python data compression (zip)
In-Reply-To: <87wsteknf7.fsf@querer.allevents.ch>
References: <87wsteknf7.fsf@querer.allevents.ch>
Message-ID: <ac2200130710230614u79abc9c1xafa75e0462f27c62@mail.gmail.com>

2007/10/23, Rene Maurer <rmnet at mailc.net>:
> Hallo
>
> I wonder if there are any pure python implementations available/known
> for the zip (or any other) data compression... As far as I know
> python's zlib uses http://www.zlib.net/, which is written in
> C. Unfortunately this is not solution for me, because my target "only"
> has a python interpreter....
>
> I have "googled" for a while, but I don't have found anything useful.
>
> Regards,
> Ren?
> --
> http://mail.python.org/mailman/listinfo/python-list
>

I have implemented Huffman in Python, it is not very fast yet. Further
improvements would requires writing some parts in C and use as a
module in Python, or maybe I just didn't think enough on how to
improve the python code.

If you don't know how huffman works, you may read this:
http://gpolo.ath.cx:81/implements/huffman
I have described the improvements I have done to this "teaching
version" here: http://gpolo.ath.cx:81/texts/opc

If you don't want to read at all, you can search at pypi for "huffman"

It doesn't have all the functionalities of any normal compressor, like
compressing directories, but it could be implemented of course.

Feedback is welcome

-- 
-- Guilherme H. Polo Goncalves


From praddyjindal at gmail.com  Sat Oct 27 16:16:15 2007
From: praddyjindal at gmail.com (Pradeep Jindal)
Date: Sun, 28 Oct 2007 01:46:15 +0530
Subject: object inheritance
In-Reply-To: <1193403117.710320.44140@e9g2000prf.googlegroups.com>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
Message-ID: <200710280146.15488.praddyjindal@gmail.com>

On Friday 26 Oct 2007 6:21:57 pm Anand wrote:
> On Oct 26, 5:31 pm, "Pradeep Jindal" <praddyjin... at gmail.com> wrote:
> > Can you tell any specific use case for doing this?
>
> I have many implementaions of a db interface.
>
> SimpleDB - simple implementation
> BetterDB - optimized implementation
> CachedDB - an implementation with caching of queries
> RestrictedDB - implementation with permissions
>
> Now, I want to combine these implementations and use.
> Typical use case scenarios are:
>
> db = RestrictedDB(CachedDB(SimpleDB()))
> db = RestrictedDB(SimpleDB())
> db = RestrictedDB(BetterDB())
> db = RestrictedDB(CachedDB(BetterDB())
> db = CachedDB(SimpleDB())
> etc..

I agree with Duncan. According to me, this should be called Delegation rather 
than inheritance. And delegation should work without any conflicts of 
identifier names and all that. I think, it should be all about several 
objects implementing a protocol (interface) and that should work cleanly.


From paul.hankin at gmail.com  Sat Oct 20 10:04:10 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 20 Oct 2007 14:04:10 -0000
Subject: Dealing with "funny" characters
In-Reply-To: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
References: <1192886024.889377.118300@e34g2000pro.googlegroups.com>
Message-ID: <1192889050.186390.316960@v29g2000prd.googlegroups.com>

On Oct 20, 2:13 pm, sophie_newbie <paulgeele... at gmail.com> wrote:
> Hi, I want to store python text strings that characters like "?" "?"
> in a mysql varchar text field. Now my problem is that mysql does not
> seem to accept these characters. I'm wondering if there is any way I
> can somehow "encode" these characters to appear as normal characters
> and then "decode" them when I want to get them out of the database
> again?

Use unicode strings, and use the 'encode' and 'decode' methods. Mysql
has utf8 support for varchars, so that seems a likely encoding to use.
If you're stuck with ascii, you can use 'unicode_escape' if you're
only accessing it from python.

But first read this excellent article on 'funny' characters:
http://www.joelonsoftware.com/articles/Unicode.html

--
Paul Hankin



From grante at visi.com  Fri Oct 12 11:47:33 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 15:47:33 -0000
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
	<slrnfgugbs.8d5.nick@irishsea.home.craig-wood.com>
	<1192186638.902052.85880@i38g2000prf.googlegroups.com>
Message-ID: <13gv5olooh77a6c@corp.supernews.com>

On 2007-10-12, BlueBird <phil at freehackers.org> wrote:

>> I'd recommend wxPython over those becase
>>
>> 1) native look and feel on all platforms

Not true for KDE or other non-Gtk desktops.

> You get it with PyQt as well.

Not true for Gnome or other non-Qt desktops.

There is no single "native look and feel" for Linux systems.

There are about a half-dozen different widget sets (Gtk and Qt
being the two big ones).

-- 
Grant Edwards                   grante             Yow! !!  I am having fun!!!
                                  at               
                               visi.com            


From richyjsm at gmail.com  Tue Oct  2 18:43:56 2007
From: richyjsm at gmail.com (richyjsm at gmail.com)
Date: Tue, 02 Oct 2007 22:43:56 -0000
Subject: Using fractions instead of floats
In-Reply-To: <1191360444.514028.186770@d55g2000hsg.googlegroups.com>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
	<1191301175.225114.283340@50g2000hsm.googlegroups.com>
	<mailman.1380.1191305602.2658.python-list@python.org>
	<1191360444.514028.186770@d55g2000hsg.googlegroups.com>
Message-ID: <1191365036.561668.242010@57g2000hsv.googlegroups.com>

On Oct 2, 5:27 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
> But it is still wrong to say "0.6 is definitely not the same as 3/5".

Out of context, I'd certainly agree.  But from the context, I assumed
it was clear that the 0.6 was a Python float.  I probably should have
made this clearer.  My statement should probably have been something
like: a literal 0.6 in Python code does not have the same mathematical
value as the rational (or real) number 3/5.

Richard



From george.sakkis at gmail.com  Wed Oct 31 21:16:23 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 01 Nov 2007 01:16:23 -0000
Subject: 3 number and dot..
In-Reply-To: <1193873568.958367.106850@22g2000hsm.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<87tzo7hs62.fsf@mulj.homelinux.net>
	<1193873568.958367.106850@22g2000hsm.googlegroups.com>
Message-ID: <1193879783.588070.305110@i13g2000prf.googlegroups.com>

On Oct 31, 7:32 pm, bearophileH... at lycos.com wrote:
> Hrvoje Niksic:
>
> > I'm surprised that no one has proposed a regex solution, such as:
>
> I presume many Python programmers aren't much used in using REs.
>
> > >>> import re
> > >>> re.sub(r'\d{1,3}(?=(?:\d{3})+$)', r'\g<0>.', str(1234567))
> > '1.234.567'
>
> It works with negative numbers too. It's a very nice solution of a
> simple problem that shows what you can do with REs. But I think that
> RE has to be expanded & splitted (and maybe even commented) with a
> VERBOSE, to improve readability, maybe somethign like:
>
> \d {1,3}
> (?=                # lockahead assertion
>   (?: \d {3} )+ $  # non-group
> )
>
> Bye,
> bearophile


That's 3 times faster on my box and works for negatives too:

def localize(num, sep='.'):
    d,m = divmod(abs(num),1000)
    return '-'*(num<0) + (localize(d)+sep+'%03d'%m if d else str(m))


George



From mensanator at aol.com  Tue Oct 30 16:15:54 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 30 Oct 2007 13:15:54 -0700
Subject: Iteration for Factorials
In-Reply-To: <mailman.656.1193770381.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<47271f3e$1_3@news.bluewin.ch>
	<mailman.649.1193757936.13605.python-list@python.org>
	<1193769477.956629.232940@o38g2000hse.googlegroups.com>
	<mailman.656.1193770381.13605.python-list@python.org>
Message-ID: <1193775354.171735.295360@o38g2000hse.googlegroups.com>

On Oct 30, 1:52 pm, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> On Tue, Oct 30, 2007 at 11:37:57AM -0700, mensana... at aol.com wrote regarding Re: Iteration for Factorials:
>
>
>
>
>
>
>
> > On Oct 30, 10:25 am, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> > > On Tue, Oct 30, 2007 at 01:09:38PM +0100, Boris Borcic wrote regarding Re: Iteration for Factorials:
>
> > > > Py-Fun wrote:
> > > > > I'm stuck trying to write a function that generates a factorial of a
> > > > > number using iteration and not recursion.  Any simple ideas would be
> > > > > appreciated.
>
> > > > fact = lambda n : len(map([1].__imul__,range(1,n+1))[0])
>
> > > OK.  Now I've been sucked in.  How about this:
>
> > > def fact(x):
> > >         def f(x):
> > >                 if int(x) != x:
> > >                         raise ValueError
> > >                 elif x > 1:
> > >                         return f(x-1) ** x
> > >                 elif x == 1:
> > >                         return 10
> > >                 else:
> > >                         raise ValueError
> > >         return len(str(f(x))) -1
>
> > > The great part about this recursive solution is that you don't have to worry about the stack limit because performance degrades so quickly on the conversion to string!  fact(8) takes a little less than a second, fact(9) takes about a minute, and fact(10) takes more time than I had patience to wait for!
>
> > And the not-so-great part is that it raises an exception
> > on fact(0) which makes it utterly useless for calculating
> > combinations of m things taken n at a time: m!/n!*(m-n)!
>
> > Why is it that no one seems able to get this right?
>
> I can't speak for everyone, but my excuses are as follows:
>
> * I haven't studied math or done math-heavy work in 8 years.

Fair enough. I primarily do math-heavy work, and am familiar
with such matters. But that's just me.

> * I'm not at my home computer, and most of the thread (wherein,
>   I now recall, that particular rule was specified) is downloaded
>   to my home computer, so I was working from my feeble memory.

Well, I've only had to point it out a dozen times already in
this thread. Nice to see that all that effort has been for nought.

> * I didn't care enough to google for it.

Quoting from Monty Python:
"It's just as easy to get these things right, you know."

>
> That said, s/elif x == 1:/elif x in (0,1):/ should solve the problem

Sure, it's always easily solvable. I just hope someone learns the
lesson on how to test properly, to make sure things work the way
they should and to fail the way they should so that one can actually
trust the algorithms they write.



From chowroc.z+l at gmail.com  Wed Oct 31 02:30:53 2007
From: chowroc.z+l at gmail.com (Roc Zhou)
Date: Wed, 31 Oct 2007 14:30:53 +0800
Subject: A near realtime fs mirror application (for backup,
	written in Python, by Linux inotify)
In-Reply-To: <7847e5160710212208w50293c85rdbc088b2543c2c31@mail.gmail.com>
References: <7847e5160710212208w50293c85rdbc088b2543c2c31@mail.gmail.com>
Message-ID: <7847e5160710302330v7744df6ch8a93c166fed9a750@mail.gmail.com>

Now I meet a strange problem.

After the first sync init, it enters to the realtime replication state. I
deployed them on 3 machines, and have run near half month. Suddenly one day,
a host, I don't know what's wrong, I found fs_mirror get the empty
records from its mirrord agent. In normal conditions, these records should
be:
"CREATE:/var/www/html"
"FWRITE:/var/www/html/index.php"
"DELETE:/var/www/html/temp"
"MOVE:('/var/www/html/aa', '/var/www/html/bb')"
...
But should be no empty records. This lead to fs_mirror to a dead infinite
loop.

I restart the fs_mirror from the broken point, but the problem remains,
after DEBUG I found the problem occurs at the same serial number every
time(I use Berkeley DB as the log record(wmLog), and serial numbers are the
keys), so I suspect that the problem is BDB, but I don't know how to test
and locate to the right place.

I tried to open the orignal db file in Python:
>>> import bsddb
>>> x = bsddb.btopen("/var/mirrord/wmlog"
>>> len(x)
623748
>>> x["6854"]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.5/bsddb/__init__.py", line 223, in __getitem__
    return _DeadlockWrap(lambda: self.db[key])  # self.db[key]
  File "/usr/lib/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap
    return function(*_args, **_kwargs)
  File "/usr/lib/python2.5/bsddb/__init__.py", line 223, in <lambda>
    return _DeadlockWrap(lambda: self.db[key])  # self.db[key]
KeyError: '6854'
>>> x[str(6854)]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.5/bsddb/__init__.py", line 223, in __getitem__
    return _DeadlockWrap(lambda: self.db[key])  # self.db[key]
  File "/usr/lib/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap
    return function(*_args, **_kwargs)
  File "/usr/lib/python2.5/bsddb/__init__.py", line 223, in <lambda>
    return _DeadlockWrap(lambda: self.db[key])  # self.db[key]
KeyError: '6854'
>>> x.first()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.5/bsddb/__init__.py", line 278, in first
    rv = _DeadlockWrap(self.dbc.first)
  File "/usr/lib/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap
    return function(*_args, **_kwargs)
_bsddb.DBNotFoundError: (-30990, 'DB_NOTFOUND: No matching key/data pair
found

Even I have stopped the mirrord daemon, the errors remain.

Then I tried to copy and move out the database file, and open the new
dbfile:
>>> import bsddb
>>> x = bsddb.btopen("/tmp/wmlog")
>>> len(x)
0
the length is 0, and getitem get the same errors above.

Why this occurs when I copy the db file? Especially the len() is 0?!

I can only restart the mirrord, to rebuild the BDB data file, and so far,
this problem does not occurs again.

I don't know why there is a occasional problem like this? Is there any one
be familiar with BDB can give me several advices?

Thanks.

-- 
------------------------------------------
My Projects:
 http://sourceforge.net/projects/crablfs
http://crablfs.sourceforge.net/
http://crablfs.sourceforge.net/#ru_data_man
http://crablfs.sourceforge.net/tree.html
http://cralbfs.sourceforge.net/sysadm_zh_CN.html
My Blog:
http://chowroc.blogspot.com/
http://hi.baidu.com/chowroc_z/
Looking for a space and platform to exert my originalities (for my
projects)...
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/b964bfc1/attachment.html>

From borroff at gmail.com  Tue Oct 16 14:12:59 2007
From: borroff at gmail.com (borroff)
Date: Tue, 16 Oct 2007 18:12:59 -0000
Subject: Good Book
In-Reply-To: <mailman.51.1192522719.13605.python-list@python.org>
References: <mailman.51.1192522719.13605.python-list@python.org>
Message-ID: <1192558379.314044.120890@q5g2000prf.googlegroups.com>

On Oct 16, 4:00 am, Lars Johansen <l... at larsjohansen.org> wrote:
> HI are there any recommended books for an sysadmin who has been mostly
> writing shell scripts, but want to move up to create more complex
> programs.

I believe there's a "Python for System Administration" book in the
works, an equivalent to the Perl book.  Does anyone know when it's due
(particularly the authors, if they're online)?



From arkanes at gmail.com  Thu Oct  4 14:48:11 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 4 Oct 2007 13:48:11 -0500
Subject: Don't understand module search path...
In-Reply-To: <1191522758.012794.141860@n39g2000hsh.googlegroups.com>
References: <1191522758.012794.141860@n39g2000hsh.googlegroups.com>
Message-ID: <4866bea60710041148j77d00128m8cf777791bb457e2@mail.gmail.com>

On 10/4/07, mhearne808[insert-at-sign-here]gmail[insert-dot-here]com
<mhearne808 at gmail.com> wrote:
> I think I don't understand how the module search path works...
>
> Let's say I have a folders called 'test'.  Underneath it, I create two
> more folders called 'foo' and 'bar'.
>
> In 'foo', I create an empty '__init__.py' file, indicating that this
> folder is a package 'foo'.  I then create a simple python script
> 'foo.py' consisting of the following code:
>
> ----------------------------
> #!/usr/bin/python
>
> def printhello():
>     print 'Hello world!'
> ----------------------------
>
> Then in test/bar, I create 'bar.py' consisting of the following code:
> ----------------------------
> #!/usr/bin/python
> import sys
> import os
> (curpath,thisdir) = os.path.split(os.getcwd())
> foopath = os.path.join(curpath,'foo')
> sys.path.append(foopath)
> print sys.path
> os.chdir(os.path.join(os.getcwd(),'..'))
> print os.getcwd()
> from foo.foo import printhello
> ----------------------------
>
> When I try to run bar.py, I get the following:
>
> ----------------------------
> [sys.path search path, including full path to 'foo' folder]
> path/to/test
> Traceback (most recent call last):
>   File "/path/to/test/bar/testfoo.py", line 16, in <module>
> from foo.foo import printhello
> ImportError: No module named foo
> ----------------------------
>
> Why?  If 'foo' is in sys.path, shouldn't it appear when I try to
> import the foo module from it?

No. foo will be searched for modules, but foo itself won't be found
(because it's looking *inside* foo). You want "test" to be on sys.path
for this to work.

>Incidentally, when I move the script
> up to 'test' and modify it so that it just says:
> ----------------------------
> #!/usr/bin/python
>
> from foo.foo import printhello
> ----------------------------
>
> I get no errors.  I don't understand the difference...
>

The directory that the executing script is in is implicitly on
sys.path, so when you do this you place "test" in sys.path, and foo is
found.


From adam at atlas.st  Mon Oct 22 22:59:52 2007
From: adam at atlas.st (Adam Atlas)
Date: Mon, 22 Oct 2007 19:59:52 -0700
Subject: Python - why don't this script work?
In-Reply-To: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
Message-ID: <1193108392.089611.91170@v29g2000prd.googlegroups.com>

On Oct 22, 9:47 pm, Ohmster <r... at dev.nul.invalid> wrote:
> I am trying to use this cool script that some MIT guy wrote and it just
> does not work, I get a stream of errors when I try to run it. It is
> supposed to visit a URL and snag all of the pictures on the site. Here is
> the script:http://web.mit.edu/pgbovine/www/image-harvester/image-harvester.py
>
> Here is my output when I try to run it on my Fedora 6 machine:
>
> [ohmster at ohmster bench]$ image-harvester.pyhttp://public.fotki.com/DaGennelman/
> /home/ohmster/scripts/image-harvester.py: line 59: from: command not found
> [ohmster at ohmster bench]$
>
> The script is to be folowed up with another one to weed out the small
> thumbnails and banner images, here is the base URL:http://web.mit.edu/pgbovine/www/image-harvester/
>
> Line 59 in image-harvester.py reads as follows:
>
> 59:     from sgmllib import SGMLParser
> 60:     import urllib
> 70:     from urlparse import urlparse, urljoin
> 71:     import re
> 72:     import os
>
> Can anyone tell me what is wrong with this script and why it will not run?
> It does not like the command "from", is there such a command in python?
> Does this mean that python has the "import" command but not the "from"
> command or do we not know this yet as it hangs right away when it hits the
> very first word of the script, "from"? Maybe this is not a Linux script or
> something? I wonder why it needs the x-server anyway, I tried running it
> from an ssh term window and it had a fit about no x-server so now I am
> doing this in a gnome term window. This looked so cool too. :(
>
> Please be patient with me, I do not know python at all, I just want for
> this script to work and if I see enough working examples of python, I may
> just take up study on it, but for right now, I do not know the language.
> Total newbie.
>
> Thanks.

I think you're executing it as a shell script. Run "python image-
harvester.py", or add "#!/usr/bin/env python" to the top of the file.



From valereG at hotmail.fr  Fri Oct 19 11:06:55 2007
From: valereG at hotmail.fr (=?iso-8859-1?q?S=E9bastien?= Weber)
Date: 19 Oct 2007 15:06:55 GMT
Subject: write whitespace/tab to a text file
References: <1192804409.415321.257150@k35g2000prh.googlegroups.com>
Message-ID: <4718c80e$0$21148$7a628cd7@news.club-internet.fr>

Le Fri, 19 Oct 2007 07:33:29 -0700, dirkheld a ?crit?:

> Hi,
> 
> I would l like to write some data to a text file. I want to write the
> data with whitespace or tabs in between so that I create tabular columns
> like in a spreadsheet. How can I do this in python. (btw, I'm new to
> python)
> 
> names = ['John','Steve','asimov','fred','jim'] ## output I would like in
> txt file : John         Steve asimov      fred     jim
> 
> f=open('/User/home/Documents/programming/python/test.txt','w')
> 	for x in range(len(names)):
> 		f.write(tags[x])
> 	f.close()
Maybe :

names = ["Sebastien", "Ana", "Elodie", "Mohamed", "Antoniavna"]
maxlen = max(len(n) for n in names)
linetowrite = ""
for n in names:
    linetowrite += n.ljust(maxlen + 3, ' ')
f = open('test.txt', 'w')
f.writelines(linetowrite.strip(' ') + '\n')
f.close()


From david at nospam.spam  Wed Oct 17 20:38:58 2007
From: david at nospam.spam (david)
Date: Thu, 18 Oct 2007 10:38:58 +1000
Subject: why doesn't have this list a "reply-to" ?
In-Reply-To: <mailman.109.1192591826.13605.python-list@python.org>
References: <471530E3.9090602@gmail.com>	<1192587229.888.13.camel@viola.izb.knu.ac.kr>
	<mailman.109.1192591826.13605.python-list@python.org>
Message-ID: <13hdap1151s7u94@corp.supernews.com>

Steve Lamb wrote:
> On 2007-10-17, Byung-Hee HWANG <bh at izb.knu.ac.kr> wrote:
>> Just click "Ctrl-L", then you can reply to lists directly if you use
>> good mailer like mutt or thunderbird or evolution ;; 
> 
>     Thunderbird only if it has the list-reply patch, has either enigmail or
> mhengy installed and has the reply-to-list addon installed.  Otherwise, no,
> Thunderbird still, years later, lacks that feature.  Part of the reason why I
> am test driving gmane in slrn right now.  :)
> 

I'm using Thunderbird 2.0.0.0: I use the right-click menu.

[david]


From stargaming at gmail.com  Mon Oct  1 13:34:17 2007
From: stargaming at gmail.com (Stargaming)
Date: 01 Oct 2007 17:34:17 GMT
Subject: Combine two dictionary...
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
Message-ID: <47012f99$0$15712$9b622d9e@news.freenet.de>

On Mon, 01 Oct 2007 10:24:39 -0700, Abandoned wrote:

> Hi..
> dict1={1: 4,  3: 5}... and 2 millions element dict2={3: 3,  8: 6}... and
> 3 millions element
> 
> I want to combine dict1 and dict2 and i don't want to use FOR because i
> need to performance.
> 
> I'm sorry my bed english.
> King regards..

If mutation of one dict is okay, use the `update` method. As in::

    dict1.update(dict2) # will update dict1 with dict2's items

Create a copy of one dictionary if you do not want to mutate them.
See http://docs.python.org/lib/typesmapping.html#l2h-294 for details.


From juan at juanreyero.com  Thu Oct 18 09:25:20 2007
From: juan at juanreyero.com (juan at juanreyero.com)
Date: Thu, 18 Oct 2007 15:25:20 +0200
Subject: ANN: magnitude 0.9.2
References: <m2d4vcq0iz.fsf@antares.emea.hpqcorp.net>
	<mailman.168.1192707846.13605.python-list@python.org>
Message-ID: <m2tzoozha7.fsf@antares.emea.hpqcorp.net>

Thomas Heller <theller at ctypes.org> writes:
> - "physical", not "phisical" ;-)

I see a worrisome pattern starting to emerge :-).  Thanks. 

> - you raise string exceptions in various places; these are
> deprecated and should not be used.  Also it is very
> difficult to catch them.

Yes, I believe it is the last big thing before I am fully
PEP8-compliant.  I'll change it and make a new release as
soon as I can. 

> - ScientificPython from Konrad Hinsen also contains a
> somewhat similar module.  IIRC, it is named
> PhysicalQuantities.

It is very similar to magnitude.  Same approach, almost the
same API. 

>  You might look into that and mention it on the homepage.

Done.  I will eventually have to stop adding references to
alternatives, but so far so good. 

jm



From manasd at gmail.com  Mon Oct  1 12:42:27 2007
From: manasd at gmail.com (MD)
Date: Mon, 01 Oct 2007 09:42:27 -0700
Subject: Setting value of Python variable in a Python C extension
In-Reply-To: <mailman.1349.1191255983.2658.python-list@python.org>
References: <1191254887.206973.115960@r29g2000hsg.googlegroups.com>
	<mailman.1349.1191255983.2658.python-list@python.org>
Message-ID: <1191256947.716297.248090@d55g2000hsg.googlegroups.com>

Hi Carsten,
    Thanks for your reply. I am a newbie on Python so your help is
much appreciated. My program structure is basically like this .....
(rough representation)
test.py
   var1 = ""
   rc = func1 (var1)

test.c
    func1(*v1) {
    strcpy(v1, "Hello World");
}

So basically I want to modify value of "var1" in the function "func1"
defined in test.c. Is this possible?

Thanks,
-Manas

On Oct 1, 11:26 am, Carsten Haese <cars... at uniqsys.com> wrote:
> On Mon, 2007-10-01 at 09:08 -0700, MD wrote:
> > Hi,
> >    I have a function developed in C that is being used as a Python
> > extension. The function is being passed a variable from the Python
> > program. Is it possible to change the value of this variable from
> > within the C function?
>
> That question is ill-defined because Python doesn't have variables.
> Python has objects and names. "Change the value of this variable" can
> either mean that you want to mutate an object that's passed by the
> caller, which you can do as long as the object is mutable, or you want
> to rebind a name in the caller's namespace, which you can't do.
>
> Why do you think your function needs to have side-effects instead of
> simply returning a return value?
>
> --
> Carsten Haesehttp://informixdb.sourceforge.net




From acherry at btinternet.com  Mon Oct 15 03:17:22 2007
From: acherry at btinternet.com (Adrian Cherry)
Date: 15 Oct 2007 08:17:22 +0100
Subject: Simple HTML template engine?
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <Xns99CA56F79D96Fapc@10.15.188.42>

"allen.fowler" <allen.fowler at yahoo.com> wrote in
news:1192419411.895715.138450 at e9g2000prf.googlegroups.com: 

> Hello,
> 
> Can anyone recommend a simple python template engine for
> generating HTML that relies only on the Pyhon Core modules?
> 
> No need for caching, template compilation, etc.
> 
> Speed is not a major issue.
> 
> I just need looping and conditionals. Template inheritance
> would be a bonus.
> 
> I've seen Genshi and Cheetah, but they seem way too complex.
> 
> Any ideas?
> 

Did you try Cheetah? I've just started using it for a simple job, 
just looping and conditionals and it seemed quite simple to me.

Adrian



From hniksic at xemacs.org  Fri Oct  5 09:52:33 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Fri, 05 Oct 2007 15:52:33 +0200
Subject: migrating to packages
References: <4703C661.50009@fmed.uba.ar>
	<27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>
	<mailman.1488.1191461205.2658.python-list@python.org>
	<47045b29$0$11005$4c368faf@roadrunner.com>
	<mailman.1530.1191526997.2658.python-list@python.org>
	<47060d9a$0$30531$426a74cc@news.free.fr>
	<mailman.1581.1191591456.2658.python-list@python.org>
Message-ID: <871wc9sm72.fsf@mulj.homelinux.net>

Gerardo Herzig <gherzig at fmed.uba.ar> writes:

> If the original MYCLASSES.py has 5 different classes ,say A,B,C,D,E
> , each one has to be imported (as A and B) in order to be used for
> the client code. The thing is, there are more than 5 classes, and
> looks like a lot of unnecesary work to me, since a particular
> program can use 1,2, or 3 classes at the time....Thats why im
> watching the way to override the `import statement'.......
>
> Damn client code!!!

You can create both a package and a compatibility module.  The package
would be broken into modules for modularity, while the compatibility
module would import what old code needs from the package, like this:

# old.py:
from new.submodule1 import A, B
from new.submodule2 import C, D
...

Now, old code can keep using "from old import A" and such, while new
code would import new.submodule1, new.submodule2, etc., as necessary.

Old code is no worse off because, although it uses the compatibility
module that just imports everything, that is in essence what the
previous module did as well.  On the other hand, new code can make use
of the modularity and reduce load times by only importing what it
really needs.


From mensanator at aol.com  Mon Oct  8 16:12:32 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 13:12:32 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.1676.1191866438.2658.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
Message-ID: <1191874352.380018.216090@k79g2000hse.googlegroups.com>

On Oct 8, 1:00 pm, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> On Mon, Oct 08, 2007 at 10:41:03AM -0700, mensana... at aol.com wrote regarding Re: pytz has so many timezones!:
>
>
>
> > On Oct 8, 2:32 am, Sanjay <skpate... at gmail.com> wrote:
> > > Hi All,
>
> > > I am using pytz.common_timezones to populate the timezone combo box of
> > > some user registration form. But as it has so many timezones (around
> > > 400),
>
> > There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> > +12.
>
> > A handful of countries set their clocks offset by a half hour,
> > but those aren't timezones.
>
> I'm sorry.  By what even vaguely useful definition of "Timezone" is it not a timezone if it's offset by half an hour?  

The miltary doesn't recognize them as timezones. They'll make
a not that the local time observed doesn't match the timezone,
but they don't call it a seperate timezone.

>
> > The 400 you're seeing are duplications based on locality. Of the 86
> > shown in Windows, all but 33 are dulplicate references to the same
> > timezones.
>
> > For example, Windows has seperate listings for
>
> > Central America
> > Central Time (US & Canada)
> > Guadalahara, Mexico City, Monterry - New
> > Guadalahara, Mexico City, Monterry - Old
> > Saskatchewan
>
> > but they are all GMT-6
>
> Those are non-duplicate (and perhaps inaccurate, I'm not sure).  US time switches from standard to Daylight Savings earlier than Mexico, and switches back later, as of this year.  

Duplicate timezones doesn't mean duplicate time,
as you point out. Does the OP want to know the truth
or does he want to know something he can understand.

> Reducing them to a single time zone will result in aberrant functionality in one or more locales.

I would hardly think that's an issue on the user registration
form the OP is trying to create.

>
> Cheers,
> Cliff




From kw at codebykevin.com  Sat Oct 13 09:27:40 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Sat, 13 Oct 2007 09:27:40 -0400
Subject: Cross-platform GUI development
In-Reply-To: <mailman.165.1192269333.927.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>	<mailman.159.1192260728.927.python-list@python.org>	<as0Qi.8294$UN.1208@newsfe24.lga>
	<mailman.165.1192269333.927.python-list@python.org>
Message-ID: <4710C7CC.3010806@codebykevin.com>

David Tremouilles wrote:
> No issue with pygtk on mac!
> Actually I develop on this platform everyday. Macport take care of the
> installation for me http://www.macports.org/ (Fink should do the work
> too).
> Of course native GTK on OSX could be nice but definitely not needed at
> this point in time.

"Native" Gtk on the Mac still isn't really native. I tried a "native" 
build of Wireshark and was very disappointed. Yes, it uses Quartz/Aqua 
instead of X to draw Windows, but it completely ignores other Aqua 
interface conventions--the menu is still attached to each window instead 
of at the top of the screen, buttons aren't Aqua buttons, and so on. 
Based on what I've seen, I don't think Gtk is really viable as a native 
Mac development environment; it looks as weird as Fltk, which also uses 
Aqua windowing but which also draws its own widgets and puts the menubar 
on each window.

Tk does much better; while it's not very pretty, menubars are in the 
correct place and buttons work correctly.

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From rcdailey at gmail.com  Wed Oct 10 15:56:10 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 14:56:10 -0500
Subject: for loop question
Message-ID: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>

Hi,

I'm currently writing my own CSV parser since the built in one doesn't
support Unicode. I'm wondering if there's a way to iterate over the
characters in a unicode string and have access to both the 'current' and the
'next' characters each iteration. For example:

test = u"Hello World"

for cur,next in test:
    print cur,next

Ideally, this would output:

'H', 'e'
'e', 'l'
'l', 'l'
'l', 'o'
etc...

Of course, the for loop above isn't valid at all. I am just giving an
example of what I'm trying to accomplish. Anyone know how I can achieve the
goal in the example above? Thanks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/7b6af767/attachment.html>

From hniksic at xemacs.org  Mon Oct 29 05:53:35 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 29 Oct 2007 10:53:35 +0100
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
Message-ID: <87ejfe457k.fsf@mulj.homelinux.net>

Donn Ingle <donn.ingle at gmail.com> writes:

> Is there a way I can, for debugging, access the instance variable name from
> within a class?
> E.g:
> Class X: 
>  def debug(self):
>   print "My instance var is %s" % (some magic Python stuff)

As others have answered, an instance can live in many variables, so
there is no single way to implement this sort of debugging.  Instead,
print str(self), which will give you an idea of the identity of self,
or its contents.


Sbe unpx inyhr, urer vf n cbffvoyr vzcyrzragngvba:

vzcbeg vafcrpg

qrs _svaq(senzr, bow):
    sbe anzr, inyhr va senzr.s_ybpnyf.vgrevgrzf():
        vs inyhr vf bow:
            erghea anzr
    sbe anzr, inyhr va senzr.s_tybonyf.vgrevgrzf():
        vs inyhr vf bow:
            erghea anzr
    envfr XrlReebe("Bowrpg abg sbhaq va senzr tybonyf be ybpnyf")

pynff K:
    qrs qroht(frys):
        cevag ("Pnyyre fgberf zr va %f (nzbat bgure cbffvoyr cynprf)"
               % _svaq(vafcrpg.pheeragsenzr(1), frys))

>>> klmml = K()
>>> klmml.qroht()
Pnyyre fgberf zr va klmml (nzbat bgure cbffvoyr cynprf)
>>> n = o = K()
>>> n.qroht()
Pnyyre fgberf zr va n (nzbat bgure cbffvoyr cynprf)
>>> o.qroht()
Pnyyre fgberf zr va n (nzbat bgure cbffvoyr cynprf)
>>> K().qroht()
Genpronpx (zbfg erprag pnyy ynfg):
  Svyr "<fgqva>", yvar 1, va <zbqhyr>
  Svyr "<fgqva>", yvar 4, va qroht
  Svyr "<fgqva>", yvar 8, va _svaq
XrlReebe: 'Bowrpg abg sbhaq va senzr tybonyf be ybpnyf'


From python.list at tim.thechases.com  Thu Oct  4 16:08:51 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 04 Oct 2007 15:08:51 -0500
Subject: RegEx question
In-Reply-To: <47054785.5020705@tim.thechases.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>	<1191515675.19400.39.camel@skinner.madoff.com>	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
	<50af02ed0710041248i15823f88gd6b404353ba7d472@mail.gmail.com>
	<47054785.5020705@tim.thechases.com>
Message-ID: <47054853.1050301@tim.thechases.com>

[sigh...replying to my own post]
> However, things to try:
> 
> - sometimes the grouping parens need to be escaped with "\"
> 
> - sometimes "\w" isn't a valid character class, so use the 
> long-hand variant of something like "[a-zA-Z0-9_]]
> 
> - sometimes the "+" is escaped with a "\"
> 
> - if you don't use raw strings, you'll need to escape your "\" 
> characters, making each instance "\\"

just to be clear...these are some variants you may find in 
non-python regexps (or in python regexps if you're not using raw 
strings)

-tkc






From hyozan.ux3 at gmail.com  Sun Oct 28 04:31:12 2007
From: hyozan.ux3 at gmail.com (hyozan.ux3 at gmail.com)
Date: Sun, 28 Oct 2007 08:31:12 -0000
Subject: Need some help...
Message-ID: <1193560272.637389.315680@e34g2000pro.googlegroups.com>

I want to create a program that I type in a word.

for example...

chaos

each letter equals a number....

A=1
B=20

 and so on.

So Chaos would be

C=13 H=4 A=1 O=7 S=5

I want to then have those numbers
13+4+1+7+5 added together to be 30.

How can I do that?

Also, just curious, but, how could I then have the 3 and 0 added
together to be 3?

Please help me out.

Thank you.....



From usenet at bitblocks.com  Tue Oct  9 02:07:34 2007
From: usenet at bitblocks.com (Bakul Shah)
Date: Mon, 08 Oct 2007 23:07:34 -0700
Subject: The fundamental concept of continuations
In-Reply-To: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <470b1aa6$0$79886$742ec2ed@news.sonic.net>

gnuist006 at gmail.com wrote:
 > Again I am depressed to encounter a fundamentally new concept that I
 > was all along unheard of.

The concept is 37 years old.  Wadsworth in his "Continuation
Revisited" paper says he & Strachey were struggling with
extending the technique of denotational semantics to describe
jumps and not finding a satisfactory answer.  Then, in his
words:

   in October 1970 Strachey showed me a paper "Proving
   algorithms by tail functions" by Mazurkiewicz [2] which he
   had obtained from an IFIP WG2.2 meeting. Just the phrase
   "tail functions" in the title was enough -- given the
   experience of our earlier struggles -- for the ideas to
   click into place! The (meaning of the) "rest of the program"
   was needed as an argument to the semantic functions -- just
   so those constructs that did not use it, like jumps, could
   throw it anyway. The term "continuation" was coined as
   capturing the essence of this extra argument (though I
   often wished to have a shorter word!) and the rest, as they
   say, is history.

 > Its not even in paul graham's book where i
 > learnt part of Lisp. Its in Marc Feeley's video.
 >
 > Can anyone explain:
 >
 > (1) its origin
 > (2) its syntax and semantics in emacs lisp, common lisp, scheme
 > (3) Is it present in python and java ?
 > (4) Its implementation in assembly. for example in the manner that
 > pointer fundamentally arises from indirect addressing and nothing new.
 > So how do you juggle PC to do it.
 > (5) how does it compare to and superior to a function or subroutine
 > call. how does it differ.
 >
 > Thanks a lot.
 >
 > (6) any good readable references that explain it lucidly ?

You might like this one:

http://www.intertwingly.net/blog/2005/04/13/Continuations-for-Curmudgeons


From gneuner2/ at comcast.net  Tue Oct  2 01:08:07 2007
From: gneuner2/ at comcast.net (George Neuner)
Date: Tue, 02 Oct 2007 01:08:07 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga>
	<47018e25$0$13927$fa0fcedb@news.zen.co.uk>
Message-ID: <2ak3g35id7km68ku0dnho177m5779f5qre@4ax.com>

On Tue, 02 Oct 2007 01:16:25 +0100, dan at telent.net wrote:

>Ken Tilton wrote:
>> Kenny happened to solve the traveling 
>> salesman problem and protein-folding and passed the fricking Turing test 
>> by using add-42 wherever he needed 42 added to a number, and  RMS wants 
>> credit and ownership and control of it all. 
>
>That might be what RMS wants (or not, I've never asked him), but it 
>doesn't follow from the licence.  What follows from the licence is that 
>you have to distribute the derived work as GPL _or not at all_.  I 
>practice - if not in marketing terms - that's no more a land grab than a 
>proprietary licence saying "you can't use this to add your own numbers 
>to 42 at all and if you do we'll eat your brains".
>
>The other consideration is that, and notwitshtanding any text to the 
>contrary in the GPL, it's not actually up to the copyright holder to 
>define what "derived work" means: it's for the court to decide that. 
>Now, I don't want to imply that courts are rational animals that can be 
>relied on to understand all the issues in technical cases like this (ha, 
>I slay myself) but really, if there's a reasonable concern that an 
>implementation of the major advances in computer science you describe 
>are legally derivative of someone's function that adds 42 to its 
>argument, your legal system is fucked.  Redo from start.

Our [US] legal system is fucked ... more so with respect to patents,
but copyrights aren't far behind.  The US Congress just revisited
patent law to make it less of a land grab - we'll have to wait and see
how the USPTO interprets the new rules - but copyright law has been
trending the other way (more grabbing) for a couple of decades now.

George
--
for email reply remove "/" from address


From greg at krypto.org  Sun Oct  7 23:26:17 2007
From: greg at krypto.org (Gregory P. Smith)
Date: Sun, 7 Oct 2007 20:26:17 -0700
Subject: were group "Python 2.4" bugs ported over to the new bug tracker?
Message-ID: <52dc1c820710072026q455aa3dak86ce04a9b146fda6@mail.gmail.com>

This bug about a urllib2 urlopen memory leak is still present but I don't
see it in the new bug tracker anywhere:


https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1208304&group_id=5470

If this one is missing, presumably there are others?

-gps
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/3941f829/attachment.html>

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 31 06:13:21 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 31 Oct 2007 11:13:21 +0100
Subject: Readline and record separator
In-Reply-To: <1193821377.223899.94930@d55g2000hsg.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
	<472789dd$0$23261$426a74cc@news.free.fr>
	<1193821377.223899.94930@d55g2000hsg.googlegroups.com>
Message-ID: <47285541$0$29615$426a74cc@news.free.fr>

Johny a ?crit :
> On Oct 30, 8:44 pm, Bruno Desthuilliers
> <bdesth.quelquech... at free.quelquepart.fr> wrote:
>> Johny a ?crit :
>>
>>> Is it possible to change record separator when using readline?
>>> As far as I know readline reads characters until found '\n' and it is
>>> the end of record for readline.
>> This is not a "record" separator, but a newline. As the name implies,
>> file.readline is about reading a text file line by line. For a
>> definition of "line" being : "a chuk of text that starts either at the
>> beginning of the document or after a newline" and for a definition of
>> "newline" being "a platform-specific character or character sequence".
>>
>>> My problem is that my record consits several '\n' and when I use
>>> readline it does NOT read the whole my record.
>>> So If I could change '\n' as  a record separator for readline, it
>>> would solve my problem.
>>> Any idea?
>> If you're dealing with (so-called) CSV files, you might want to have a
>> look at the (oh surprise) CSV module (in the stdlib) instead.
>>
>> HTH
> 
> Bruno,
> Thank you for your hint, but can you please be more specific when
> saying
> "look at the (oh surprise) CSV module (in the stdlib)" ?

You used the term "record" instead of "line", which is to me a clear 
indication that you're not using the appropriate tools here. If your 
file is a (so-called) CSV[1] file, there's a module for this (named 
'csv') in the standard lib.

And even if your file format is not CSV-compatible, there may be some 
answers to your problem in this module's source code (hint : one of 
these answers is "don't use line-oriented APIs when not appropriate").


[1] Coma Separated Values - but the separator can be almost anything.

HTH


From steve at holdenweb.com  Thu Oct  4 06:11:53 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 06:11:53 -0400
Subject: module confusion
In-Reply-To: <019401c8065c$13e82d00$03000080@hendrik>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz><874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>	<mailman.1489.1191464586.2658.python-list@python.org><87hcl7r1ga.fsf@benfinney.id.au>	<fe1p1i$2a6$1@sea.gmane.org>
	<019401c8065c$13e82d00$03000080@hendrik>
Message-ID: <fe2e95$63f$2@sea.gmane.org>

Hendrik van Rooyen wrote:
> "Steve Holden" <ste...web.com> wrote:
> 
>> religious issues for me. It's more like "This problem has a cross head, 
>> so I'll need a Philips screwdriver". 
> 
> As long as it is not a Pozidrive, that is a commendable attitude.
> 
I said cross head, not Pozidriv (tm). But then I have been nown to use a 
Manchester screwdriver[1] on occasion.

regards
  Steve

[1]: http://www.urbandictionary.com/define.php?term=manchester+screwdriver
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From honestguy1999 at gmail.com  Fri Oct 12 14:41:58 2007
From: honestguy1999 at gmail.com (honestguy1999 at gmail.com)
Date: Fri, 12 Oct 2007 18:41:58 -0000
Subject: How to set proxy in Python for flickr api
In-Reply-To: <1192214418.262370.310360@y27g2000pre.googlegroups.com>
References: <1192214418.262370.310360@y27g2000pre.googlegroups.com>
Message-ID: <1192214518.383511.318230@y27g2000pre.googlegroups.com>

On Oct 12, 2:40 pm, honestguy1... at gmail.com wrote:
> Hi, everyone, I am using beej's flickr api in Python. For some reason
> I have to bypass the firewall using a proxy. I read the urllib
> reference and set http_proxy="my proxy". But it didn't work. I can't
> even get authenticated. Is there anyway that we can set the proxy?

I am using v2.5 in windows



From tdwdotnet at gmail.com  Thu Oct 11 11:34:01 2007
From: tdwdotnet at gmail.com (Tim Williams)
Date: Thu, 11 Oct 2007 16:34:01 +0100
Subject: Finding Peoples' Names in Files
In-Reply-To: <felf4g$q8c$1@solaris.cc.vt.edu>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
Message-ID: <9afea2ac0710110834g304c8b5cn1eb3c4a6543075cf@mail.gmail.com>

On 11/10/2007, brad <byte8bits at gmail.com> wrote:
> Crazy question, but has anyone attempted this or seen Python code that
> does? For example, if a text file contained 'Guido' and or 'Robert' and
> or 'Susan', then we should return True, otherwise return False.
> --
> http://mail.python.org/mailman/listinfo/python-list
>


Text = open(fname).read()

def a_function():
    for Name in ['Guido', Robert',Susan']:
       if Name in Text:
           return 1

if a_function():
    print "A name was found"

:)


From bj_666 at gmx.net  Wed Oct 24 11:51:44 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 24 Oct 2007 15:51:44 GMT
Subject: Better writing in python
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<slrnfhuhcg.n4.horpner@FIAD06.norwich.edu>
	<slrnfhuk7c.p8a.hat@se-162.se.wtb.tue.nl>
Message-ID: <5o980fFlf4doU5@mid.uni-berlin.de>

On Wed, 24 Oct 2007 16:04:28 +0200, A.T.Hofkamp wrote:

>> On 2007-10-24, Alexandre Badez <alexandre.badez at gmail.com> wrote:
>> I'm just wondering, if I could write a in a "better" way this
>> code
>>
>> lMandatory = []
>> lOptional = []
>> for arg in cls.dArguments:
>>   if arg is True:
>>     lMandatory.append(arg)
>>   else:
>>     lOptional.append(arg)
>> return (lMandatory, lOptional)
>>
>> I think there is a better way, but I can't see how...
> 
> You can do it shorter, not sure that it also qualifies as better....
> 
> d = { True : [] , False : [] }
> for arg in cls.arguments:
>   d[arg == True].append(arg)
> 
> return d[True], d[False]
> 
> One potential problem here is that 'arg == True' may not be the same as 'if
> arg:'. I couldn't come up with a better equivalent expression, maybe one of the
> other readers knows more about this?

With ``if arg:`` the interpreter asks `arg` for its "boolean value".  So a
better way would be:

    d[bool(arg)].append(arg)

As `True` and `False` are instances of `int` with the values 1 and 0 it's
possible to replace the dictionary by a list:

tmp = [[], []]
for arg in cls.arguments:
    tmp[bool(arg)].append(arg)
return tmp[1], tmp[0]

Maybe that's nicer.  Maybe not.

Ciao,
	Marc 'BlackJack' Rintsch


From steve at REMOVE-THIS-cybersource.com.au  Fri Oct 19 11:13:17 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 19 Oct 2007 15:13:17 -0000
Subject: how to iterate over sequence and non-sequence ?
References: <mailman.201.1192778546.13605.python-list@python.org>
	<1192779222.618164.321910@y27g2000pre.googlegroups.com>
	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>
Message-ID: <13hhicd14jrt5e3@corp.supernews.com>

On Fri, 19 Oct 2007 16:19:32 +0200, stef wrote:

> Well I'm not collecting data, I'm collecting pointers to data.

I beg to differ, you're collecting data. How that data is to be 
interpreted (a string, a number, a pointer...) is a separate issue.


> This
> program simulates a user written program in JAL. As Python doesn't
> support pointers, instead I collect names.

This doesn't make any sense to me. If your user-written program is 
supplying pointers (that is, memory addresses like 0x15A8), how do you 
get a name from the memory address?


If you are trying to emulate pointer-manipulation, then the usual way to 
simulate a pointer is with an integer offset into an array:

# initialise your memory space to all zeroes:
memory = [chr(0)]*1024*64  # 64K of memory space, enough for anyone
NULL = 0
pointer = 45
memory[pointer:pointer + 5] = 'HELLO'
pointer += 6
memory[pointer:pointer + 5] = 'WORLD'


> The names are derived from an
> analysis of the user program under test, so the danger some of you are
> referring to, is not there, or at least is not that simple.

What about accidental clashes between your program's names and the names 
you are collecting? Are you sure there are no corner cases where 
something you pass to exec can interact badly with your code?

The thing is, exec is stomping through your program's namespace with 
great big steel-capped boots, crushing anything that gets in the way. 
Even if it is safe in your specific example, it is still bad practice, or 
at least risky practice. Code gets reused, copied, and one day a piece of 
code you wrote for the JAL project ends up running on a webserver and now 
you have a serious security hole.

(Every security hole ever started off with a programmer thinking "This is 
perfectly safe to do".)

But more importantly, what makes you think that exec is going to be 
faster and more efficient than the alternatives? By my simple test, I 
find exec to be about a hundred times slower than directly executing the 
same code:

>>> timeit.Timer("a = 1").timeit()
0.26714611053466797
>>> timeit.Timer("exec s", "s = 'a = 1'").timeit()
25.963317155838013


-- 
Steven


From erik at myemma.com  Wed Oct  3 16:48:03 2007
From: erik at myemma.com (Erik Jones)
Date: Wed, 3 Oct 2007 15:48:03 -0500
Subject: migrating to packages
In-Reply-To: <4703C661.50009@fmed.uba.ar>
References: <4703C661.50009@fmed.uba.ar>
Message-ID: <27E2B61D-3D3E-466D-9650-69E0DA27E952@myemma.com>


On Oct 3, 2007, at 11:42 AM, Gerardo Herzig wrote:

> Hi all. I have a single file with several classes, wich i want to
> separate into several packages.
> The big file is named, say MYCLASES, and contains a class named
> A(object), and B(A).
>
> We have been using this MYCLASES in the
> from MYCLASES import B syntax, but i cant reproduce this syntax using
> packages. Im forced to write from PACKAGE.B import *, and if that  
> means
> i have to touch so many files, that would really be a problem to me.
> There is (i cant find it yet) a place where i can read about that kind
> of package 'migration' situation?
>
> Because i *really* want to keep the FROM PACKAGE import B syntax.

http://www.python.org/doc/current/tut/ 
node8.html#SECTION008400000000000000000

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From johnbadawi79 at gmail.com  Tue Oct 30 22:31:43 2007
From: johnbadawi79 at gmail.com (johnbadawi79 at gmail.com)
Date: Wed, 31 Oct 2007 02:31:43 -0000
Subject: NEW INVENTED CAR INSURANCE FOR YOUR CAR
Message-ID: <1193797903.410002.45900@19g2000hsx.googlegroups.com>

NEW INVENTED CAR INSURANCE FOR YOUR CAR
New invented car insurance option to add for your ride
http://www.dream-cars.bravehost.com



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 14:50:25 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 16 Oct 2007 20:50:25 +0200
Subject: Trying to Send Repeated Messages to a Server Using sockets
In-Reply-To: <1192541728.586135.323040@t8g2000prg.googlegroups.com>
References: <1192541728.586135.323040@t8g2000prg.googlegroups.com>
Message-ID: <47150828$0$31117$426a74cc@news.free.fr>

danfolkes a ?crit :
> Hey Everyone, I am trying to send repeated messages from a "Node" to a
> "Server".  It works the first time I send the from the Node to Server,
> but after that it either errors, or does not do anything.
> 
> I would love some help,  here is the code:

Posting the trackbacks may have help too.

> import socket
> import thread
> import time
> 
> 
> def Node(nodeAddress):

pep08:
- function names should be all_lower. MixedCase is for class names.
- variable names should be all_lower

>     '''connect to node and get its file load'''
> 
>     sN = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>     # Echo client program
>     HOST = nodeAddress        # The remote host
>     PORT = 50007              # The same port as used by the server

These two last lines are useless here. The second would be meaningful 
outside the function's body. The first one looks like a constant, but is 
only an alias for the nodeAddress param.

>     sN = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

This discards the first socket instanciated above...

>     sN.connect((HOST, PORT))
>     sN.send('Hello, world')
>     data = sN.recv(1024)
>     sN.close()
>     print 'Received', repr(data)
> 
> def Server(address):

pep08 again.

>     ''' starts a socket server and decides what to do with incomming
> stuff'''
>     message = "hello from server"
>     HOST = ''                 # Symbolic name meaning the local host
>     PORT = 50007              # Arbitrary non-privileged port

Idem. But this time, you just don't use the 'address' param...

>     sP = None
>     sL = None
>     sR = None
>     sS = None
>     sStor = 0
>     sTotalStorage = 0
>     sCT = (sP,)

None of those very badly named variables are used in the code.

>     '''look in server.conf for connect_to_server value'''
> 
>     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>     s.bind((HOST, PORT))
>     s.listen(1)
>     conn, addr = s.accept()

Hem...

>     print 'Connected by', addr
>     while 1:
>         print message
>         time.sleep(1)
>         data = conn.recv(1024)
>         #if not data: break
>         conn.send(data)

Your server loops forever on the first connection it got...


>     conn.close()
> 
> thread.start_new(Server,('',))
> thread.start_new(Node,('127.0.0.1',))
> while 1:
>     time.sleep(5)
>     thread.start_new(Node,('127.0.0.1',))
> 

Here's a somewhat corrected version. I'm not sure it's an example to 
follow wrt/ threaded server implementation (it's the first time I write 
one myself), but at least it works.

import socket
import thread
import time

HOST = ''
PORT = 50007

def node(host, num):
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     s.connect((host, PORT))
     print "node %s: sending" % num
     s.send("node '%s' says : Hello, world" % num)
     time.sleep(10) # play with this to see how the server reacts...
     print "node %s: receiving" % num
     data = s.recv(1024)
     s.close()
     print "node %s: received '%s'" % (num, data)
     print "node %s: done" % num


def server(address):
     thread_ids = []

     def handle(conn, addr):
         tid = thread.get_ident()
         print "server (handle %s): handling connection for %s" % (tid, 
str(addr))

         print "server (handle %s): receiving" % tid
         data = conn.recv(1024)
         while data:
             print "server (handle %s): got '%s'" % (tid, data)
             print "server (handle %s): sending '%s'" % (tid, data)
             conn.send(data)
             time.sleep(2)
             print "server (handle %s): receiving" % tid
             data = conn.recv(1024)

         print "server (handle %s): no more data for %s, closing" % 
(tid, str(addr))
         conn.close()
         thread_ids.remove(tid)


     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     s.bind((HOST, PORT))
     s.listen(10)

     while 1:
         print "server: active handler threads : %s" % thread_ids
         nb_handlers = len(thread_ids)
         while nb_handlers > 10:
             print "server: too much connections, waiting for current 
handlers to terminate"
             time.sleep(5)
             nb_handlers = len(thread_ids)

         print "server: accepting connections - actually %s handlers" % 
nb_handlers
         conn, addr = s.accept()
         print "server: connected by", addr
         print "server: starting a new handler thread for connection %s" 
% nb_handlers
         thread_ids.append(thread.start_new(handle, (conn, addr)))
         time.sleep(1)

def main():
     print "starting server..."
     thread.start_new(server,('',))

     num = 1
     while 1:
         time.sleep(1)
         print "new node %s..." % num
         thread.start_new(node,('127.0.0.1',num))
         num += 1

if __name__ == '__main__':
     main()


From kadeko at gmail.com  Thu Oct 25 02:34:03 2007
From: kadeko at gmail.com (looping)
Date: Thu, 25 Oct 2007 06:34:03 -0000
Subject: Regular Expression question
Message-ID: <1193294043.936217.54090@q5g2000prf.googlegroups.com>

Hi,
It's not really a Python question but I'm sure someone could help me.

When I use RE, I always have trouble with this kind of search:

Ex.

I've a text file:
"""
create or replace package XXX
...

create or replace package body XXX
...
"""
now I want to search the position (line) of this two string.

for the body I use:
s = re.search(r'create\s+or\s+replace\s+package\s+body\s+', txt,
re.IGNORECASE)

but how to search for the other line ?
I want the same RE but explicitly without "body".

Thanks for your help.



From rcdailey at gmail.com  Mon Oct 22 10:47:42 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Mon, 22 Oct 2007 09:47:42 -0500
Subject: C++ version of the C Python API?
In-Reply-To: <66d0a6e10710212233q405b7798o46c1a9b4f8014327@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<471BBD55.9030601@v.loewis.de>
	<496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
	<66d0a6e10710212233q405b7798o46c1a9b4f8014327@mail.gmail.com>
Message-ID: <496954360710220747g21dc3078q8cf919431044713a@mail.gmail.com>

On 10/22/07, Nicholas Bastin <nick.bastin at gmail.com> wrote:
>
> Object-oriented programming is a design choice, not a language
> feature.  You can write straight procedural code in C++, and you can
> write object oriented code in C.  Sure, C++ has some language features
> which facilitate object-oriented programming, but it doesn't magically
> make your code object-oriented.  You can certainly write basic
> object-oriented code in C and hide most of the implementation in
> preprocessor macros if you so desire.

Well, perhaps what I meant was I personally would not turn to C for
OOP. As I said before, I've seen OOP attemps using C and it was VERY
unattractive (this coming from a C++ programmer of course). It just
doesn't make sense to me why you'd choose an OOP approach in a
language that makes it messy over a language that had OOP in mind when
it was designed. There are far better languages (which, as you said,
have features to facilitate OOP) that I would choose long before I
chose C, such as C++.

Yes, I agree you can do OOP in any language as it is just a concept,
however there are other entities that can greatly affect which
language you choose to intake such a responsibility. For example, I'd
choose Python OOP over C++ OOP because to me Python code is cleaner
and has less syntax redundancy. You get to read the important stuff
more quickly. A lot of people would disagree in that whitespace does
not make code more readable than operator delimiters, however this is
just my opinion. In addition, I'd choose Python OOP over C++ OOP for
quick applications that didn't require a great amount of performance
(such as a level editor for a game). For the game itself, I'd choose
C++ OOP because it is way more flexible and allows me to optimize the
game for speed as best as I can, whereas with python you can only
optimize only to a certain point (as with any language), which still
may not be fast enough. In any case, it's really not fair to compare
speed between an interpreted language vs a compiled language.

Given what I've learned and things I've come to like, I doubt I'd do
any sort of programming ever again that didn't involve some sort of
object oriented design. That's just my preference. This preference, in
turn, is what motivated my original question. The CPython API
interface itself seems modularized, NOT object oriented (only from
what I saw). Boost.Python, as so many have already noted, is a wrapper
over that interface introducing C++ which provides the OOP I am
looking for.


From jcd at sdf.lonestar.org  Tue Oct 30 14:52:42 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 30 Oct 2007 14:52:42 -0400
Subject: Iteration for Factorials
In-Reply-To: <1193769477.956629.232940@o38g2000hse.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<47271f3e$1_3@news.bluewin.ch>
	<mailman.649.1193757936.13605.python-list@python.org>
	<1193769477.956629.232940@o38g2000hse.googlegroups.com>
Message-ID: <20071030185242.GE11330@sdf.lonestar.org>

On Tue, Oct 30, 2007 at 11:37:57AM -0700, mensanator at aol.com wrote regarding Re: Iteration for Factorials:
> 
> On Oct 30, 10:25 am, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> > On Tue, Oct 30, 2007 at 01:09:38PM +0100, Boris Borcic wrote regarding Re: Iteration for Factorials:
> >
> >
> >
> > > Py-Fun wrote:
> > > > I'm stuck trying to write a function that generates a factorial of a
> > > > number using iteration and not recursion.  Any simple ideas would be
> > > > appreciated.
> >
> > > fact = lambda n : len(map([1].__imul__,range(1,n+1))[0])
> >
> > OK.  Now I've been sucked in.  How about this:
> >
> > def fact(x):
> >         def f(x):
> >                 if int(x) != x:
> >                         raise ValueError
> >                 elif x > 1:
> >                         return f(x-1) ** x
> >                 elif x == 1:
> >                         return 10
> >                 else:
> >                         raise ValueError
> >         return len(str(f(x))) -1
> >
> > The great part about this recursive solution is that you don't have to worry about the stack limit because performance degrades so quickly on the conversion to string!  fact(8) takes a little less than a second, fact(9) takes about a minute, and fact(10) takes more time than I had patience to wait for!
> 
> And the not-so-great part is that it raises an exception
> on fact(0) which makes it utterly useless for calculating
> combinations of m things taken n at a time: m!/n!*(m-n)!
> 
> Why is it that no one seems able to get this right?
> 

I can't speak for everyone, but my excuses are as follows:

* I haven't studied math or done math-heavy work in 8 years.
* I'm not at my home computer, and most of the thread (wherein, I now recall, that particular rule was specified) is downloaded to my home computer, so I was working from my feeble memory.
* I didn't care enough to google for it.

That said, s/elif x == 1:/elif x in (0,1):/ should solve the problem


From grante at visi.com  Fri Oct 19 13:11:05 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 19 Oct 2007 17:11:05 -0000
Subject: write whitespace/tab to a text file
References: <1192804409.415321.257150@k35g2000prh.googlegroups.com>
	<1192805658.343366.74650@i38g2000prf.googlegroups.com>
Message-ID: <13hhp99gj7r6b71@corp.supernews.com>

On 2007-10-19, marc wyburn <marc.wyburn at googlemail.com> wrote:

>> I would l like to write some data to a text file. I want to write the
>> data with whitespace or tabs in between so that I create tabular
>> columns like in a spreadsheet. How can I do this in python.
>> (btw, I'm new to python)
>>
>> names = ['John','Steve','asimov','fred','jim']
>> ## output I would like in txt file : John         Steve
>> asimov      fred     jim
>>
>> f=open('/User/home/Documents/programming/python/test.txt','w')
>>         for x in range(len(names)):
>>                 f.write(tags[x])
>>         f.close()
>
> I'm not sure exactly but you'll probably need to find out what the
> ASCII code is for a tab.

You don't need to know the ASCII code.  Just use "\t":

print "%s\t%s\t%s" % (1,"two",3)

If you fixed column spacing with spaces instead of tabs:

print "%-8s%-8s%-8s" % (1,"two",3)

-- 
Grant Edwards                   grante             Yow! HAIR TONICS, please!!
                                  at               
                               visi.com            


From manuhack at gmail.com  Thu Oct  4 15:48:18 2007
From: manuhack at gmail.com (Manu Hack)
Date: Thu, 4 Oct 2007 15:48:18 -0400
Subject: RegEx question
In-Reply-To: <496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
Message-ID: <50af02ed0710041248i15823f88gd6b404353ba7d472@mail.gmail.com>

On 10/4/07, Robert Dailey <rcdailey at gmail.com> wrote:
> On 10/4/07, Adam Lanier <adam at krusty.madoff.com> wrote:
> >
> > try @param\[(in|out)\] \w+
> >
>
> This didn't work either :(
>
> The tool using this regular expression (Comment Reflower for VS2005) May be
> broken...
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

How about @param\[[i|o][n|u]t*\]\w+ ?


From byte8bits at gmail.com  Thu Oct 11 12:11:14 2007
From: byte8bits at gmail.com (brad)
Date: Thu, 11 Oct 2007 12:11:14 -0400
Subject: Finding Peoples' Names in Files
In-Reply-To: <1192117743.911143.152680@d55g2000hsg.googlegroups.com>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>
Message-ID: <felhv8$18g$1@solaris.cc.vt.edu>

cokofreedom at gmail.com wrote:

> However...how can you know it is a name...

OK, I admitted in my first post that it was a crazy question, but if one 
could find an answer, one would be onto something. Maybe it's not a 100% 
answerable question, but I would guess that it is an 80% answerable 
question... I just don't know how... yet :)

Besides admitting that it's a crazy question, I should stop and explain 
how it would be useful to me at least. Is a credit card number itself 
valuable? I would think not. One can easily re and luhn check for credit 
card numbers located in files with a great degree of accuracy, but a 
number without a name is not very useful to me. So, if one could 
associate names to luhn checked numbers automatically, then one would be 
onto something. Or at least say, "hey, this file has luhn validated CCs 
*AND* it seems to have people's names in it as well." Now then, I'd have 
less to review or perhaps as much as I have now, but I could push the 
files with numbers and names to the top of the list so that they would 
be reviewed first.

Brad





From mccredie at gmail.com  Wed Oct 24 17:40:24 2007
From: mccredie at gmail.com (Matimus)
Date: Wed, 24 Oct 2007 21:40:24 -0000
Subject: Parameters in context manager's __enter__ method?
In-Reply-To: <mailman.413.1193234852.13605.python-list@python.org>
References: <mailman.413.1193234852.13605.python-list@python.org>
Message-ID: <1193262024.092449.212150@e34g2000pro.googlegroups.com>

On Oct 24, 7:06 am, s... at pobox.com wrote:
> I am working on a file locking class which I'd like to work with Python
> 2.5's context managers.  The acquire method takes an optional timeout
> argument:
>
>     class FileLock:
>         ...
>         def acquire(self, timeout=None):
>             ...
>
>         def __enter__(self):
>             self.acquire()
>             return self
>
> Can that optional timeout be somehow accommodated by the with statement?
> (I'm thinking no, which may not be a big shortcoming anyway.)
>
> Thx,
>
> Skip

I think a better solution might be to create a locking class, and a
seperate context manager class. That way you can pass the timeout as a
parameter to the context managers constructor:

[code]
fl = FileLock(...)
with FileLockContext(filelock=fl, timeout=1000):
   # do stuff
[/code]

But another option along the same line might be to have the acquire
method return the context instance. Then you could write:

[code]
class FileLockContext(fl, timeout):
    ...

class FileLock:
    ...
    def acquire(self, timeout=None):
        # do acquiring
        return FileLockContext(self, timeout)

fl = FileLock(...)
with fl.acquire(1000):
  #do stuff
[/code]

Or, you could go the same path you are already, using a hybrid, and
pass timeout to the FileLock constructor.

Matt



From marek.rocki at wp.pl  Tue Oct 23 19:14:30 2007
From: marek.rocki at wp.pl (marek.rocki at wp.pl)
Date: Tue, 23 Oct 2007 16:14:30 -0700
Subject: Using arrays in Python - problems.
In-Reply-To: <mailman.392.1193179875.13605.python-list@python.org>
References: <mailman.392.1193179875.13605.python-list@python.org>
Message-ID: <1193181270.396191.291130@i38g2000prf.googlegroups.com>


attackwarningred napisa (a):

> The array F(n) is dynamically allocated earlier on and is sized with
> reference to shotcount, the number of iterations the model performs. The
> problem is I can't get something like this to run in Python using numpy,
> and for the size of the array to be sized dynamically with reference to
> the variable shotcount. I acknowledge that my knowledge of Python is
> still really basic (I only started learning it a few days ago) and I'm
> trying to get out of the Fortran programming mindset but I'm stuck and
> don't seem to be able to get any further. If anyone could help I'd be
> really grateful. Thanks very much in advance.

Hello. If you want your array to be dynamically resized at every loop
iteration, that might be quite inefficient. How about initialising it
with a required size?

F = numpy.array([0]*shotcount)
for n in xrange(shotcount):
        F[n] = random.lognormvariate(F_mean, F_sd)

Hope that helps,
Marek



From matt.rasmus at gmail.com  Sun Oct 14 22:12:15 2007
From: matt.rasmus at gmail.com (rasmus)
Date: Mon, 15 Oct 2007 02:12:15 -0000
Subject: GLE-like python package
In-Reply-To: <4712451c$0$16115$9b4e6d93@newsspool1.arcor-online.net>
References: <47123bc8$0$4530$9b4e6d93@newsspool3.arcor-online.net>
	<1192378346.740393.30680@e34g2000pro.googlegroups.com>
	<4712451c$0$16115$9b4e6d93@newsspool1.arcor-online.net>
Message-ID: <1192414335.514062.127340@v23g2000prn.googlegroups.com>

On Oct 14, 12:34 pm, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> Cesar G. Miguel wrote:
> > I think this is what you're looking for:
>
> >http://pyx.sourceforge.net/
>
> It damn sure is (a straight ripoff of GLE ;))!
>
> The syntax seems a bit messier than GLE (naturally) but since it is
> python I'm willing to bite that bullet.
>
> Thanks :)
> /W

In case you're interested in making interactive visualizations, you
might want to look at my own python package SUMMON:
http://people.csail.mit.edu/rasmus/summon/index.shtml

Matt



From rjcarr at gmail.com  Mon Oct  1 23:16:42 2007
From: rjcarr at gmail.com (rjcarr)
Date: Tue, 02 Oct 2007 03:16:42 -0000
Subject: New to python
In-Reply-To: <1191126010.260942.89230@y42g2000hsy.googlegroups.com>
References: <1191126010.260942.89230@y42g2000hsy.googlegroups.com>
Message-ID: <1191295002.844200.263460@r29g2000hsg.googlegroups.com>

On Sep 29, 9:20 pm, Googy <cool.gaurav.ignit... at gmail.com> wrote:
> I am new to python...
>
> The programming language i know well is C
> Can any one recommend me the good ebook for beginners. I have loads of
> ebooks but i am not able to decide which to start with which book.
> Also i am learning XML so later on i can switch to books on Python and
> XML but initially which book to read??
>
> Please help...

I know quite a few languages fairly fluently, maybe 5 or 6, but for
some reason python was rought at the beginning.  I think it is mostly
because I don't get along well with the API docs (and although it has
gotten better, I still don't like them).

When first learning so much of the sample code I saw seemed
magical ... I had no idea where things were coming from.  One weekend
I read the o'reilly book, learning python I think, from cover to cover
and it helped tremendously.  Now whenever I start a new project I have
to think of a reason to not use python, and it is pretty rare.



From gagsl-py2 at yahoo.com.ar  Fri Oct 19 20:15:12 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 21:15:12 -0300
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
	<Michael.J.Fromberger-6E3720.18124919102007@localhost>
Message-ID: <op.t0gyzmsfx6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 19:12:49 -0300, Michael J. Fromberger  
<Michael.J.Fromberger at Clothing.Dartmouth.EDU> escribi?:

> Before I affront you with implementation details, here's an example:
>
> | from __future__ import with_statement
>
> | with last_of(enumerate(file('/etc/passwd', 'rU'))) as fp:
> |     for pos, line in fp:
> |         if fp.marked():
> |             print "Last line, #%d = %s" % (pos + 1, line.strip())
>
> In short, last_of comprises a trivial context manager that knows how to
> iterate over its input, and can also indicate that certain elements are
> "marked".  In this case, only the last element is marked.

The name is very unfortunate. I'd expect that last_of(something) would  
return its last element, not an iterator.
Even with a different name, I don't like that marked() (a method of the  
iterator) should be related to the current element being iterated.

> We could also make the truth value of the context manager indicate the
> marking, as illustrated here:
>
> | with last_of("alphabet soup") as final:
> |     for c in final:
> |         if final:
> |             print "Last character: %s" % c
>
> This is bit artificial, perhaps, but effective enough.  Of course, there

Again, why should the trueness of final be related to the current element  
being iterated?

> is really no reason you have to use "with," since we don't really care
> what happens when the object goes out of scope:  You could just as
> easily write:
>
> | end = last_of(xrange(25))
> | for x in end:
> |   if end:
> |     print "Last element: %s" % x

Again, why the truth value of "end" is related to the current "x" element?

> But you could also handle nested context, using "with".  Happily, the
> machinery to do all this is both simple and easily generalized to other
> sorts of "marking" tasks.  For example, we could just as well do
> something special with all the elements that are accepted by a predicate
> function, e.g.,
>
> | def isinteger(obj):
> |     return isinstance(obj, (int, long))
>
> | with matching(["a", 1, "b", 2, "c"], isinteger) as m:
> |     for elt in m:
> |         if m.marked():
> |             print '#%s' % elt,
> |         else:
> |             print '(%s)' % elt,
> |
> |     print

I think you are abusing context managers *a*lot*!
Even accepting such evil thing as matching(...), the above code could be  
equally written as:

m = matching(...)
for elt in m:
   ...

Anyway, a simple generator that yields (elt, function(elt)) would be  
enough...

-- 
Gabriel Genellina



From gagsl-py2 at yahoo.com.ar  Thu Oct  4 18:50:22 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 04 Oct 2007 19:50:22 -0300
Subject: setuptools without unexpected downloads
References: <87ejgmklep.fsf@benfinney.id.au>
	<1190802526.695391.326220@n39g2000hsh.googlegroups.com>
	<5lurorFa92euU1@mid.uni-berlin.de>
	<1190805012.275901.227570@57g2000hsv.googlegroups.com>
	<5luv0iFaai82U1@mid.uni-berlin.de>
	<1190808836.056298.232640@57g2000hsv.googlegroups.com>
	<fddivk$f90$1@sea.gmane.org>
	<mailman.1111.1190813942.2658.python-list@python.org>
	<1190840682.716950.131830@r29g2000hsg.googlegroups.com>
	<mailman.1164.1190908383.2658.python-list@python.org>
	<1191330684.132452.179580@y42g2000hsy.googlegroups.com>
	<op.tzlr3hl4x6zn5v@gabriel2.softlabbsas.com.ar>
	<Xns99BE4AAC5CDFBmaxericksongmailcom@80.91.229.5>
Message-ID: <op.tzo218qpx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 03 Oct 2007 08:21:04 -0300, Max Erickson <maxerickson at gmail.com>  
escribi?:

> "Gabriel Genellina" <gagsl-py2 at yahoo.com.ar> wrote:
> ...
>> This recent blog post contains step-by-step instructions on using
>> free  tools to compile python extensions:
>> <http://boodebr.org/main/python/build-windows-extensions>
>> --
> ...
>
> The package available here:
>
> http://www.develer.com/oss/GccWinBinaries
>
> is quite a lot more straightforward. You do have to be okay with using
> GCC 4.1 though. As a bonus, it supports versions of python that link
> against several different versions of the Microsoft runtime, rather
> than just one.

Thanks! This was the package I were looking for at first, but I could not  
find the reference anywhere!

-- 
Gabriel Genellina



From billwerk at gmail.com  Tue Oct  9 19:27:01 2007
From: billwerk at gmail.com (Bill Hamilton)
Date: Tue, 9 Oct 2007 18:27:01 -0500
Subject: List loops
In-Reply-To: <470bf99c$1@news.eftel.com.au>
References: <mailman.27.1191944046.916.python-list@python.org>
	<470bf99c$1@news.eftel.com.au>
Message-ID: <e1525e7f0710091627o776fbea1yf158eb7082959b10@mail.gmail.com>

On 10/9/07, John Machin <sjmachin at lexicon.net> wrote:
> On 10/10/2007 1:33 AM, Hamilton, William wrote:
> >> From: Tommy Grav
> >>
> >> Hi everyone,
> >>
> >>    I have a list of objects where I have want to do two loops.
> >> I want to loop over the list and inside this loop, work on all
> >> the elements of the list after the one being handled in the outer
>
> The man said "after" ...
>
> >
> >>>> alist = range(3)
> >>>> for index, i in enumerate(alist):
> >       for jndex, j in enumerate(alist[index:]):
>
> ... so you need index+1 ...
>
> >               print index, jndex, i, j
> >
> >
> > 0 0 0 0
>
> ... to avoid the above unwanted output.
>

Hey, if I got it right, he'd have no work to do himself.  :)


--
-Bill Hamilton


From kschutte at csail.mit.edu  Tue Oct 16 22:05:13 2007
From: kschutte at csail.mit.edu (Ken Schutte)
Date: Tue, 16 Oct 2007 22:05:13 -0400
Subject: negative base raised to fractional exponent
In-Reply-To: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
Message-ID: <47156DD9.5090504@csail.mit.edu>

schaefer.mp at gmail.com wrote:
> Does anyone know of an approximation to raising a negative base to a
> fractional exponent? For example, (-3)^-4.11111 since this cannot be
> computed without using imaginary numbers. Any help is appreciated.

As others have said, you can use Python's complex numbers (just write -3 
as -3+0j).  If for some reason you don't want to, you can do it all with 
reals using Euler's formula,

(-3)^-4.11111  =  (-1)^-4.11111  *  3^-4.11111
=
e^(j*pi*-4.11111)  *  3^-4.11111
=
(cos(pi*-4.11111) + j*sin(pi*-4.11111)) * 3^-4.11111

in Python:

 >>> import math
 >>> real_part = (3**-4.11111) * math.cos(-4.11111 * math.pi)
 >>> imaj_part = (3**-4.11111) * math.sin(-4.11111 * math.pi)
 >>> (real_part,imaj_part)
(0.01026806021211755, -0.0037372276904401318)


Ken


From smithsm at samuelsmith.org  Fri Oct 26 13:16:23 2007
From: smithsm at samuelsmith.org (Samuel M. Smith)
Date: Fri, 26 Oct 2007 11:16:23 -0600
Subject: ctypes on arm linux
Message-ID: <D756230F-847E-42C9-848E-EE5F3BCD2FD5@samuelsmith.org>

I have built python 1.5.1 from source for an embedded ARM9 debian  
linux Sarge distribution but
ctypes doesn't build.  Anybody have any idea what the problem is? Do  
I have to have the libffi package
installed.
See my errors below.
I looked and ffi.h exists in three places

/usr/local/src/Python-2.5.1/Modules/_ctypes/libffi_arm_wince/ffi.h
/usr/local/src/Python-2.5.1/Modules/_ctypes/libffi_msvc/ffi.h
/usr/local/src/Python-2.5.1/build/temp.linux-armv4l-2.5/libffi/ 
include/ffi.h


with two different definitions for ffi_closure
typedef struct {
   char tramp[FFI_TRAMPOLINE_SIZE];
   ffi_cif   *cif;
   void     (*fun)(ffi_cif*,void*,void**,void*);
   void      *user_data;
} ffi_closure __attribute__((aligned (8)));

typedef struct {
   char tramp[FFI_TRAMPOLINE_SIZE];
   ffi_cif   *cif;
   void     (*fun)(ffi_cif*,void*,void**,void*);
   void      *user_data;
} ffi_closure;

is the __attribute__ syntax causing a problem


building '_ctypes' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict- 
prototypes -fPIC -I. -I/usr/local/src/Python-2.5.1/./Include -Ibuild/ 
temp.linux-armv4l-2.5/libffi/include -Ibuild/temp.linux-armv4l-2.5/ 
libffi -I/usr/local/src/Python-2.5.1/Modules/_ctypes/libffi/src -I./ 
Include -I. -I/usr/local/include -I/usr/local/src/Python-2.5.1/ 
Include -I/usr/local/src/Python-2.5.1 -c /usr/local/src/Python-2.5.1/ 
Modules/_ctypes/_ctypes.c -o build/temp.linux-armv4l-2.5/usr/local/ 
src/Python-2.5.1/Modules/_ctypes/_ctypes.o
In file included from /usr/local/src/Python-2.5.1/Modules/_ctypes/ 
_ctypes.c:126:
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:71: error:  
syntax error before "ffi_closure"
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:71: warning: no  
semicolon at end of struct or union
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:78: error:  
syntax error before '}' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:78: warning:  
type defaults to `int' in declaration of `ffi_info'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:78: warning:  
data definition has no type or storage class
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:94: error:  
syntax error before "ffi_info"
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:94: warning: no  
semicolon at end of struct or union
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:101: error:  
conflicting types for `restype'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:76: error:  
previous declaration of `restype'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:109: error:  
syntax error before '}' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:109: warning:  
type defaults to `int' in declaration of `CFuncPtrObject'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:109: warning:  
data definition has no type or storage class
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:165: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:168: warning:  
type defaults to `int' in declaration of `AllocFunctionCallback'
/usr/local/src/Python-2.5.1/Modules/_ctypes/ctypes.h:168: warning:  
data definition has no type or storage class
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`c_void_p_from_param':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1330: error:  
`func' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1330: error:  
(Each undeclared identifier is reported only once
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1330: error:  
for each function it appears in.)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:1331: error:  
syntax error before ')' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2470: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2471: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_set_errcheck':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2472: error:  
`ob' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2477: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2484: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2485: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_get_errcheck':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2486: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2495: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2496: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_set_restype':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2497: error:  
`ob' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2498: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2520: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2521: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_get_restype':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2523: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2539: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2540: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_set_argtypes':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2543: error:  
`ob' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2544: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2562: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2563: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_get_argtypes':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2565: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_FromDll':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2747: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2802: error:  
syntax error before ')' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_new':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2867: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2870: error:  
`thunk' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:2939: error:  
syntax error before ')' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3040: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3043: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`_build_callargs':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3044: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3054: error:  
`poutmask' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3055: error:  
`pinoutmask' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3056: error:  
`pnumretvals' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3064: error:  
`inargs' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3113: error:  
`kwds' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3268: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3269: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_call':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3274: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3329: error:  
`inargs' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3329: error:  
`kwds' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3398: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3399: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_traverse':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3400: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3400: warning:  
implicit declaration of function `visit'
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3400: error:  
`arg' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3407: error:  
`visit' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3411: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3412: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_clear':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3413: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3431: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3432: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_dealloc':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3433: error:  
`self' undeclared (first use in this function)
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: At top level:
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3438: error:  
syntax error before '*' token
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3439: warning:  
function declaration isn't a prototype
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c: In function  
`CFuncPtr_repr':
/usr/local/src/Python-2.5.1/Modules/_ctypes/_ctypes.c:3448: error:  
`self' undeclared (first use in this function)




**********************************************************************
Samuel M. Smith Ph.D.
2966 Fort Hill Road
Eagle Mountain, Utah 84005-4108
801-768-2768 voice
801-768-2769 fax
**********************************************************************
"The greatest source of failure and unhappiness in the world is
giving up what we want most for what we want at the moment"
**********************************************************************


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071026/99b2c8e7/attachment.html>

From jstroud at mbi.ucla.edu  Fri Oct 12 05:04:07 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 12 Oct 2007 09:04:07 GMT
Subject: decorating container types (Python 2.4)
In-Reply-To: <1192148551.690908.111090@q5g2000prf.googlegroups.com>
References: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
	<femava$i4b$1@daisy.noc.ucla.edu>
	<1192148551.690908.111090@q5g2000prf.googlegroups.com>
Message-ID: <bMGPi.2925$lD6.2471@newssvr27.news.prodigy.net>

timaranz at gmail.com wrote:
> On Oct 12, 12:19 pm, James Stroud <jstr... at mbi.ucla.edu> wrote:
>> timar... at gmail.com wrote:
>>> I have a container class A and I want to add functionality to it by
>>> using a decorator class B, as follows:
>>> class A(object):
>>>     def __len__(self):
>>>         return 5
>>> class B(object):
>>>     def __init__(self, a):
>>>         self._a = a
>>>     def __getattr__(self, attr):
>>>         return getattr(self._a, attr)
>>>     def other_methods(self):
>>>         blah blah blah
>>> I was expecting len(B) to return 5 but I get
>>> AttributeError: type object 'B' has no attribute '__len__'
>>> instead.
>>> I was expecting len() to call B.__len__() which would invoke
>>> B.__getattr__ to call A.__len__ but __getattr__ is not being called.
>>> I can work around this, but I am curious if anyone knows _why_
>>> __getattr__ is not being called in this situation.
>>> Thanks
>>> Tim
>> The why part is that __len__ is an unbound method of the class, not an
>> unbound method of the class's metaclass. Also, your code above makes
>> absolutely no association between classes A and B, which is the most
>> fundamental reason.
> 
> Just so I'm clear on this: Are you saying that the problem with my
> original code is that len() is equivalent to type(x).__len__(x) that
> looks for a class attribute rather than an instance attribute as my
> code requires?
> 
> I don't own class A and they are generated by function calls rather
> than instantiated directly, that's why I'm decorating them instead of
> inheriting.  The crux of the (academic) question is why does len()
> expect '__len__' to be a class attribute instead of an instance
> attribute, and why is this a good idea?

You are taking the length of the *class* (whatever that means) with 
"len(B)", so B must have a method __len__() bound to itself, which would 
be an unbound method of B's class (which I am calling the metaclass of 
B, since B is a class--a class's class is a metaclass). So you want the 
unbound __len__() method of A to be the unbound __len__() method of the 
metaclass of B. This is easier done than said:

def long_class_factory(cls, name):
   class _longmeta(type):
     __len__ = cls.__len__.im_func
   return _longmeta(name, (), {})


E.g.:

py> def long_class_factory(cls, name):
...   class _longmeta(type):
...     __len__ = cls.__len__.im_func
...   return _longmeta(name, (), {})
...
py> class A(object):
...     def __len__(self):
...         return 5
...
py> B = long_class_factory(A, 'B')
py> B
<class '__main__.B'>
py> len(B)
5

Of course you can now inherit from B:

class C(B):
   pass

E.g.:

py> class C(B): pass
...
py> len(C)
5

James

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

http://www.jamesstroud.com


From sndive at gmail.com  Tue Oct 30 14:31:03 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Tue, 30 Oct 2007 18:31:03 -0000
Subject: simple? embedding question
Message-ID: <1193769063.364226.208300@o38g2000hse.googlegroups.com>

suppose i have imported two modules foo and bar with
foo=PyImport_ImportModule("foo") and bar=PyImport_ImportModule("bar")
respectively.

Now suppose I have an artitrary python expression to evaluate.
Do I need to parse that thring and check for foo. and bar. before
jumping the usual
PyModule_GetDict,PyDict_GetItemString,PyObject_CallObject hoop hoop on
the PyObject for
the prefix or there is a better way?

btw PyRun_SimpleString("foo.baz()"); does not work:
 Traceback (most recent call last):
  File "<string>", line 1, in ?
NameError: name 'foo' is not defined

and i potentially need a PyObject* back with the result of the
expression anyway.



From kenneth at inwind.it  Fri Oct 26 04:50:47 2007
From: kenneth at inwind.it (kenneth)
Date: Fri, 26 Oct 2007 08:50:47 -0000
Subject: matplotlib & mod_python
Message-ID: <1193388647.463318.236340@22g2000hsm.googlegroups.com>

Hi all.

I would like to use a "combination" of matplotlib and mod_python to
create a
PNG figure on the fly in my web site.
The mod_python handler code should be something like this:


def handler(req):

    fig = Figure()
    ...
    ... figure creation stuff
    ...
    canvas = FigureCanvasAgg(fig)
    canvas.print_figure(req, dpi=72)

   return apache.OK


This code gives me an error as req is not a file-like instance (as
sys.stdout):

TyperError: Could not convert object to file pointer

Is there a way to to this thing ?

Thank you very much for any suggestion,
Paolo



From bignose+hates-spam at benfinney.id.au  Tue Oct 16 03:45:04 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 17:45:04 +1000
Subject: confused on calculating date difference in days.
References: <mailman.49.1192518819.13605.python-list@python.org>
Message-ID: <877iln5wqn.fsf@benfinney.id.au>

"krishnakant Mane" <researchbase at gmail.com> writes:

> firstly, I can't get a way to convert a string like "1/2/2005" in a
> genuan date object which is needed for calculation.

Until recently, this was a wart in the Python standard library:
datetime objects exist in the 'datetime' module, but parsing strings
to get date/time components was only available in the 'time' module.

In Python 2.5, though, we have 'datetime.datetime.strptime'
<URL:http://docs.python.org/lib/datetime-datetime.html#l2h-634>, which
parses a string according to a specified format, and returns the
corresponding datetime value.

    >>> import datetime
    >>> datetime.datetime.strptime("2007-10-16t17:40:00", "%Y-%m-%dt%H:%M:%S")
    datetime.datetime(2007, 10, 16, 17, 40)

> now once this is done I will create a another date object with
> today = datetime.datetime.now()
> and then see the difference between this today and the string that I
> converted to date.

That's simple: datetime objects support difference via the subtraction
arithmetic operator, returning a datetime.timedelta instance
<URL:http://docs.python.org/lib/datetime-timedelta.html>.

    >>> value = datetime.datetime(2007, 10, 16, 15, 30, 45)
    >>> value - datetime.datetime(2007, 10, 16, 15, 20, 00)
    datetime.timedelta(0, 645)
    >>> value - datetime.datetime(2007, 10, 12, 8, 25, 19)
    datetime.timedelta(4, 25526)
    >>> value - datetime.datetime(2007, 11, 26, 0, 0, 0)
    datetime.timedelta(-41, 55845)

-- 
 \             "Experience is that marvelous thing that enables you to |
  `\      recognize a mistake when you make it again."  -- Franklin P. |
_o__)                                                            Jones |
Ben Finney


From byte8bits at gmail.com  Thu Oct 11 15:50:00 2007
From: byte8bits at gmail.com (brad)
Date: Thu, 11 Oct 2007 15:50:00 -0400
Subject: Finding Peoples' Names in Files
In-Reply-To: <mailman.107.1192131799.927.python-list@python.org>
References: <felf4g$q8c$1@solaris.cc.vt.edu>	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>	<felg5m$rta$1@solaris.cc.vt.edu>	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>	<felhv8$18g$1@solaris.cc.vt.edu>	<1192121372.931784.171120@d55g2000hsg.googlegroups.com>	<1192122174.084193.298950@v3g2000hsg.googlegroups.com>
	<mailman.107.1192131799.927.python-list@python.org>
Message-ID: <felupe$jk0$1@solaris.cc.vt.edu>

Chris Mellon wrote:

> In case you're doing this for PCI validation, be aware that just the
> CC number is considered sensitive and you'd get some false negatives
> if you filter on anything except that.
> 
> Random strings that match CC checksums are really quite rare and false
> positives from that alone are unlikely to be a problem. Unless I
> deployed this and there was a significant false positive rate I
> wouldn't risk the false negatives, personally.

Yes, it is for PCI. Our rate of false positives is low, very low. I 
wasn't aware that a number alone was a PCI violation. Thank you! On 
another note, we're a university (Virginia Tech) and we're subject to 
FERPA, HIPPA, GLBA, etc... in addition to PCI. So we do these checks for 
U.S. Social Security Numbers too in an effort to prevent or lessen the 
chance of ID theft. Unfortunately, there is no luhn check for SSNs. We 
follow the Social Security Administration verification guideline 
religiously... here's an web front-end to my logic:

http://black.cirt.vt.edu/public/valid_ssn/index.html

but still have many false positives on SSNs, so being able to id *names 
and numbers* in files would still be a be benefit to us.

Brad


From horpner at yahoo.com  Fri Oct  5 08:47:54 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Fri, 05 Oct 2007 12:47:54 GMT
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
	<slrnfg9ru0.1lk.horpner@FIAD06.norwich.edu>
	<fe49n2$asr$1@lust.ihug.co.nz>
Message-ID: <slrnfgccj1.20k.horpner@FIAD06.norwich.edu>

On 2007-10-05, Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> In message <slrnfg9ru0.1lk.horpner at FIAD06.norwich.edu>, Neil Cerutti wrote:
>
>> On 2007-10-03, Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand>
>> wrote:
>>> In Python, all names _are_ variables. They are not "bound" to
>>> objects. The value of os.path is a pointer. It's implemented
>>> as a pointer, it has all the semantics of a pointer.
>> 
>> No. A pointer is also an iterator.
>> 
>> void duplicate(char *d, const char *s)
>> {
>>   while (*d++ = *s++)
>>     ;
>> }
>
> So if you can't do pointer arithmetic, then it's not a pointer?
> Trying this:
>
>     void duplicate(void *d, const void *s)
>     {
>       while (*d++ = *s++)
>         ;
>     }
>
> I get:
>
>     test.c: In function 'duplicate':
>     test.c:3: warning: dereferencing 'void *' pointer
>     test.c:3: warning: dereferencing 'void *' pointer
>     test.c:3: error: invalid use of void expression
>
> So you can't do arithmetic or iterate with a void * pointer.

...or dereference.

> Does that mean it's not really a pointer?

That's an interesting taxonimical conundrum. If a pointer were
defined by it's semantics, then yes, a void pointer wouldn't be a
pointer. But pointers are defined not by behavior, but by an
ANSI/ISO standard. The term "pointer to void" makes sense if you
think of it as a pointer in an altered, intermediate state.

I suppose you might score a Pyrrhic victory by claiming that
Python identifiers are pointers that don't behave like pointers.
But you claimed the opposite.

-- 
Neil Cerutti


From usenet at solar-empire.de  Sun Oct  7 21:13:28 2007
From: usenet at solar-empire.de (Marc Christiansen)
Date: Mon, 8 Oct 2007 03:13:28 +0200
Subject: tinyp2p - trying to get it to work
References: <febk9e$gfe$1@nemesis.news.tpi.pl>
Message-ID: <oqcot4-mkp.ln1@pluto.solar-empire.de>

Fantus <fantus at poczta.fm> wrote:
> Hello
> 
> I am doing a small research and I found this:
> 
> http://www.freedom-to-tinker.com/tinyp2p.html
[...]
> Now when I try to run a client using following command:
> 
> > python tinyp2p.py haslo client http://10.10.10.1:2233 koniki
> 
> it gives me some strange output and erros:
> 
> 
> Traceback (most recent call last):
>   File "tinyp2p.py", line 14, in ?
>     for url in pxy(ar[3]).f(pw(ar[3]),0,[]):
>   File "/usr/lib/python2.4/xmlrpclib.py", line 1096, in __call__
>     return self.__send(self.__name, args)
>   File "/usr/lib/python2.4/xmlrpclib.py", line 1383, in __request
>     verbose=self.__verbose
>   File "/usr/lib/python2.4/xmlrpclib.py", line 1147, in request
>     return self._parse_response(h.getfile(), sock)
>   File "/usr/lib/python2.4/xmlrpclib.py", line 1286, in _parse_response
>     return u.close()
>   File "/usr/lib/python2.4/xmlrpclib.py", line 744, in close
>     raise Fault(**self._stack[0])
> xmlrpclib.Fault: <Fault 1: 'exceptions.TypeError:coercing to Unicode: 
> need string or buffer, list found'>
> 
> 
> Can anybody help me to solve this? Please. I did browse google but found 
> nothing.

I had a (not so quick) look. The code proves its point (i.e. writing a
very small p2p application is possible), but it is horrible. With only
one server, the code is broken; maybe it works using multiple servers, I
didn't test. A quick fix seems to be to change the line
    pr() and [aug(s) for s in aug(pr()[0])]
to
    pr() and [aug(s) for s in aug(pr()[0])] or pr([myU])

Please don't take tinyp2p.py as an example on writing python. 

HTH Marc


From floris.bruynooghe at gmail.com  Wed Oct 31 09:47:50 2007
From: floris.bruynooghe at gmail.com (Floris Bruynooghe)
Date: Wed, 31 Oct 2007 13:47:50 -0000
Subject: python in academics?
In-Reply-To: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
Message-ID: <1193838470.373386.146470@z9g2000hsf.googlegroups.com>

On Oct 30, 3:39 am, sandipm <sandip.m... at gmail.com> wrote:
> seeing posts from students on group. I am curious to know, Do they
> teach python in academic courses in universities?

In Southampton Uni (UK) they do teach (some) Python to Engineering
undergrads (aero, mech, ship, maybe more) thanks to one lecturer
pushing it afaik.

Regards
Floris



From cjt22 at bath.ac.uk  Fri Oct  5 06:26:06 2007
From: cjt22 at bath.ac.uk (cjt22 at bath.ac.uk)
Date: Fri, 05 Oct 2007 03:26:06 -0700
Subject: WebBased Vector 2D Graphics
Message-ID: <1191579966.073025.168980@50g2000hsm.googlegroups.com>

Hi there

I currently have a Python program outputing to the command line,
durations of 'completed Steps' and 'data items' in relation to time
i.e.


--------------jfh
              ---------kl    //kl started after jfh finished
                    % Ds  //new data arrived at this point in time
                    -------pl (1)  //Details error with finsihed Step
                           *kl      // This step is now outputed but
due to error with pl is cancelled (no duration)

I am new to doing any web based development and don't have a clue
where to start! I just wondered what is the best way to output this
program to a web page graphically.

I want to be able to represent these durations "-----" as rectangles
and as the program runs the page will refresh every 10 seconds, thus
the boxes will expand with time until they have finished. New data
will also be represented in boxes with a different colour. I believe
some kind of script will have to be run which constantly updates the
html page after x seconds which then causes the web page to refresh
with the updated data.

Is there any way this web programming can be done in python. Or
perhaps I can use soemthing such as ajax?

As mentioned previously, I have never done any web based development
so don't really know what I'm talking about when trying to understand
how I can go from this Python program output to producing some
graphical output on a web page.

Any help would be much appreciated
Chris



From arserlom at gmail.com  Mon Oct 29 09:52:04 2007
From: arserlom at gmail.com (Armando Serrano Lombillo)
Date: Mon, 29 Oct 2007 13:52:04 -0000
Subject: Built-in functions and keyword arguments
Message-ID: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>

Why does Python give an error when I try to do this:

>>> len(object=[1,2])
Traceback (most recent call last):
  File "<pyshell#40>", line 1, in <module>
    len(object=[1,2])
TypeError: len() takes no keyword arguments

but not when I use a "normal" function:

>>> def my_len(object):
	return len(object)

>>> my_len(object=[1,2])
2



From stef.mientki at gmail.com  Sat Oct 20 06:09:02 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sat, 20 Oct 2007 12:09:02 +0200
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <471919fe$0$26744$426a74cc@news.free.fr>
References: <mailman.201.1192778546.13605.python-list@python.org>	<1192779222.618164.321910@y27g2000pre.googlegroups.com>	<2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>	<13hhicd14jrt5e3@corp.supernews.com>	<mailman.220.1192811880.13605.python-list@python.org>
	<471919fe$0$26744$426a74cc@news.free.fr>
Message-ID: <4719D3BE.3000105@gmail.com>

<snip>
>> def user_program():
>>   x = 5    ; _debug(2)
>>   global x,i
>>   _debug (3)
>>   for i in xrange(10):
>>       _debug (3)
>>       x = x + 1    ; _debug (4)
>>     
>
> You do know that Python exposes all of it's compilation / AST / whatever 
> machinery, don't you ? IOW, you can take a textual program, compile it 
> to a code object, play with the AST, add debug hooks, etc... Perhaps you 
> should spend a little more time studying the modules index ?
>   
thanks Bruno,
but you're talking about terminology I don't know:
compilation / AST / IOW / module index ???

But to be honest it's not my main goal.
My goal is to write a functional simulator.
You can compare it with a little travelling,
I want to go from A to B.
Normally I'ld travel by bus or train,
but in this case there isn't going a bus to B.
So in this case I take a car,
ask someone how to start it,
and drive to B.

But anyway thanks very much for this and other answers.
cheers,
Stef Mientki




From ptmcg at austin.rr.com  Sun Oct 14 03:00:42 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Sun, 14 Oct 2007 00:00:42 -0700
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <1192345242.025455.294870@i13g2000prf.googlegroups.com>

On Oct 12, 5:58 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> Hello,
> can I determine somehow if the iteration on a list of values is the last
> iteration?
>
> Example:
>
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
>
> that would print
>
> 1
> 2
> 9
>
> Can this be acomplished somehow?
>
> Thanks,
>
> Florian

Maybe it's a leftover from my C++ days, but I find the iteration-based
solutions the most appealing.  This is a refinement of the previous
post by Diez Roggisch.  The test method seems to match your desired
idiom pretty closely:

def signal_last(lst):
    last2 = None
    it = iter(lst)
    try:
        last = it.next()
    except StopIteration:
        last = None
    for last2 in it:
        yield False, last
        last = last2
    yield True, last

def test(t):
    for isLast, item in signal_last(t):
        if isLast:
            print "...and the last item is", item
        else:
            print item

test("ABC")
test([])
test([1,2,3])

Prints:

A
B
...and the last item is C
...and the last item is None
1
2
...and the last item is 3

-- Paul



From larry.bates at websafe.com  Thu Oct  4 09:16:55 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 04 Oct 2007 08:16:55 -0500
Subject: Looking for volunteer to help debug SpamBayes problem
In-Reply-To: <mailman.1451.1191419114.2658.python-list@python.org>
References: <mailman.1451.1191419114.2658.python-list@python.org>
Message-ID: <4704E7C7.6060206@websafe.com>

skip at pobox.com wrote:
> We've had some reports of a UnicodeDecodeError in SpamBayes by people using
> its IMAP filter.  I'm unable to reproduce it with other SpamBayes
> applications I use and don't have a suitable IMAP setup in which to test it.
> This problem is holding up the 1.1 release of SpamBayes.  If you always
> wanted to give SpamBayes a try and have access to IMAP, this could be the
> chance you've been waiting for.  Just reply to me (skip at pobox.com) and I'll
> help you get set up.
> 
> Thanks,
> 
Skip,

I've been using SpamBayes with Outlook/IMAP for about 6 months without any
problems.  One "issue" is that it doesn't seem to filter my mail when I first 
start up each morning.  I have to manually run the filtering process.  I've 
never seen UnicodeDecodeError.  I'd be happy to test something for you.

FYI, Larry


From kay.schluehr at gmx.net  Wed Oct 10 15:24:29 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Wed, 10 Oct 2007 12:24:29 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <fej4s2$7gl$01$1@news.t-online.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191988646.640498.278860@19g2000hsx.googlegroups.com>
	<1192034225.641699.240200@r29g2000hsg.googlegroups.com>
	<fej4s2$7gl$01$1@news.t-online.com>
Message-ID: <1192044269.822144.189070@g4g2000hsf.googlegroups.com>

On Oct 10, 8:15 pm, Peter Otten <__pete... at web.de> wrote:
> Kay Schluehr wrote:
> >>http://mdp.cti.depaul.edu/examples
>
> > The delivered sourcecode is syntactically broken. Tabs and whitespaces
> > were mixed and when I open a file like gluon/global.py I find sections
> > like this:
>
> > class Request(Storage):
> >     """
> >     defines the request object and the default values of its members
> >     """
> >     def __init__(self):
> >     self.env=Storage()       # this line is incorrect syntax in Python
>
> You may have configured your editor to use a tabwidth of four spaces
> (Python always uses 8).
>
> Peter

You are right! I looked at the tokenizer.py module and the default
value for tabsize is 8. Now I feel stupid since I believe everyone
knew this for at least a decade and it is somewhere between page 1 and
10 of the Python tutorial I didn't look at for 5 years or so.

Now I get the following class definition:

class Request(Storage):
    def __init__(self):
	self.env=Storage()
	self.cookies=Storage()
	self.get_vars=Storage()
	self.post_vars=Storage()
	self.vars=Storage()
	self.application=None
	self.function=None
	self.args=[]
    pass

This is syntactically correct but the "pass" at the end makes me worry
about understanding even less about yet unknown language conventions
( setting pass as an endmarker of a block ) or the programmers
intentions or both. It's very scary in either way and I might need a
few days of recovering.

Kay



From mail at gedankenkonstrukt.de  Thu Oct 11 17:22:37 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Thu, 11 Oct 2007 23:22:37 +0200
Subject: Library for crawling forums
In-Reply-To: <1192130023.125026.271530@r29g2000hsg.googlegroups.com>
References: <1192130023.125026.271530@r29g2000hsg.googlegroups.com>
Message-ID: <fem46t$1rq$1@newsreader2.netcologne.de>

BlueCrux:
> I'm trying to write a utility to crawl forums and strip posts to be
> gone through offline. Just the content, I don't need to get who posted
> or sigs or any identifying info.
> 
> Can anyone suggest a library that is already geared toward this?

Maybe a combination of mechanize [1] and BeautifulSoup [2]?

[1] http://wwwsearch.sourceforge.net/mechanize/
[2] http://www.crummy.com/software/BeautifulSoup/
-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct 29 05:27:23 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 10:27:23 +0100
Subject: Need some help...
In-Reply-To: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
References: <1193560272.637389.315680@e34g2000pro.googlegroups.com>
Message-ID: <4725a77b$0$15793$426a74cc@news.free.fr>

hyozan.ux3 at gmail.com a ?crit :
> I want to create a program that I type in a word.
> 
> for example...
> 
> chaos
> 
> each letter equals a number....
> 
> A=1
> B=20
> 
>  and so on.
> 
> So Chaos would be
> 
> C=13 H=4 A=1 O=7 S=5
> 
> I want to then have those numbers
> 13+4+1+7+5 added together to be 30.
> 
> How can I do that?

If the values are arbitrary:

letters_values = {'A':1, 'B':20, 'C':13, 'H':4, 'O':7, 'S':5, #etc...}
print letters_values['A']


> Also, just curious, but, how could I then have the 3 and 0 added
> together to be 3?

help(sum)
help(map)
help(int)
print int('3')
help(list)
print list('30')
help(str)
print str(30)




From deets at nospam.web.de  Mon Oct  8 17:14:08 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 23:14:08 +0200
Subject: Convert obejct string repr to actual object
In-Reply-To: <mailman.1680.1191871194.2658.python-list@python.org>
References: <mailman.1680.1191871194.2658.python-list@python.org>
Message-ID: <5mvkt1FffgtpU1@mid.uni-berlin.de>

Tor Erik S?nvisen schrieb:
> Hi,
> 
> I've tried locating some code that can recreate an object from it's
> string representation...
> The object in question is really a dictionary containing other
> dictionaries, lists, unicode strings, floats, ints, None, and
> booleans.
> 
> I don't want to use eval, since I can't trust the source sending the
> object.... I'm sure someone must have had the same need and created
> code for it... Maybe Pypy has what I need??? Haven't looked though...


Try using simplejson.

Diez


From mensanator at aol.com  Mon Oct 22 15:12:29 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 12:12:29 -0700
Subject: Iteration for Factorials
In-Reply-To: <87bqarov3n.fsf@rudin.co.uk>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
Message-ID: <1193080349.610343.95430@v23g2000prn.googlegroups.com>

On Oct 22, 1:35 pm, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
> "mensana... at aol.com" <mensana... at aol.com> writes:
> > On Oct 22, 7:50 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> >> Py-Fun <lorna.bu... at gmail.com> wrote:
> >> > I'm stuck trying to write a function that generates a factorial of a
> >> > number using iteration and not recursion.  Any simple ideas would be
> >> > appreciated.
>
> >> This version avoids doing anything fancier than adding 1, so it should be
> >> simple enough for anyone:
>
> >> def factorial(e):
> >>     a = 1
> >>     for b in range(e):
> >>         c = 0
> >>         for j in range(b, -1, -1):
> >>             for d in range(a):
> >>                 c += 1
> >>         a = c
> >>     return a
>
> > Not simple enough for my taste:
>
> >>>> import gmpy
> >>>> gmpy.fac(10)
> > mpz(3628800)
>
> I haven't followed all this thread, but has anyone yet done:
>
> import operator
> def fact(x):
>     return reduce(operator.mul, xrange(1,x))

I hope not.

>>> import operator
>>> def fact(x):
	return reduce(operator.mul,xrange(1,x))

>>> fact(3)
2
>>> fact(2)
1
>>> fact(1)

Traceback (most recent call last):
  File "<pyshell#10>", line 1, in <module>
    fact(1)
  File "<pyshell#7>", line 2, in fact
    return reduce(operator.mul,xrange(1,x))
TypeError: reduce() of empty sequence with no initial value

>>> fact(0)

Traceback (most recent call last):
  File "<pyshell#11>", line 1, in <module>
    fact(0)
  File "<pyshell#7>", line 2, in fact
    return reduce(operator.mul,xrange(1,x))
TypeError: reduce() of empty sequence with no initial value

I think you need to make it a bit more complicated.



From gatti at dsdata.it  Mon Oct  8 06:46:05 2007
From: gatti at dsdata.it (gatti at dsdata.it)
Date: Mon, 08 Oct 2007 03:46:05 -0700
Subject: pytz has so many timezones!
In-Reply-To: <5mu8nqFf6tvaU1@mid.uni-berlin.de>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<5mu8nqFf6tvaU1@mid.uni-berlin.de>
Message-ID: <1191840365.421959.33250@g4g2000hsf.googlegroups.com>

On Oct 8, 10:40 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Sanjay wrote:
> > Hi All,
>
> > I am using pytz.common_timezones to populate the timezone combo box of
> > some user registration form. But as it has so many timezones (around
> > 400), it is a bit confusing to the users. Is there a smaller and more
> > practical set? If not, some suggestions on how to handle the
> > registration form effectively would help me a lot.
>
> I'm not a timezone-guru - but I _think_ if there are 400 timezones defined,
> it should list them, shouldn't it? What if you lived in the one that's not
> part of the "practical subset"?

I think the problem is displaying a dropdown list of timezones. People
have little idea of how their timezones are called; it would be better
to list countries, which are many but nicely alphabetized, and map the
country to its only timezone, or for the few large countries with more
than a TZ offer a choice later.

Lorenzo Gatti



From exhuma at gmail.com  Sun Oct  7 06:28:29 2007
From: exhuma at gmail.com (Michel Albert)
Date: Sun, 07 Oct 2007 03:28:29 -0700
Subject: Python + Shoutpy + Twisted Locks
In-Reply-To: <mailman.1605.1191637291.2658.python-list@python.org>
References: <1191570955.158128.326560@57g2000hsv.googlegroups.com>
	<mailman.1605.1191637291.2658.python-list@python.org>
Message-ID: <1191752909.941272.254560@y42g2000hsy.googlegroups.com>

On Oct 6, 4:21 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar> wrote:
> En Fri, 05 Oct 2007 04:55:55 -0300, exhuma.twn <exh... at gmail.com> escribi?:
>
> > [...] What I found
> > is that "libshout" is blocking, which should be fine as the whole
> > thing runs in it's separate thread. But the application hangs
> > nevertheless while streaming. This effectively blocks out the other
> > thread that checks the player status, which then fails to append new
> > songs to the queue. So only one song is played when streaming.
>
> > The other threads in my application run fine and don't block the rest
> > of the app. So I guess, that the main problem is that blocking occurs
> > "outside" the python world and "inside" the libshout world.
>
> Only one thread at a time may be executing Python code; the Global
> Interpreter Lock (GIL) ensures the mutual exclusion. Extension modules
> (written in C) may use the macros
> Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS to release/acquire the GIL
> before/after an external blocking call.
> I don't know libshout, or how you are doing the binding python-libshout,
> but if your analysis is correct it means that the code is not releasing
> the GIL at the appropiate points.
>
> --
> Gabriel Genellina

Hmmm... ok. I suppose rewriting the whole thing using twisted's
deferreds could then solve the problem. Which are basically nothing
more than callbacks with a weird name ;) Unfortunately this means that
I have to re-think a lot. But in the end I suppose it will pay off.

Thanks for taking the time and reading my little essay Gabriel ;)



From jason.dusek at gmail.com  Fri Oct 12 02:07:02 2007
From: jason.dusek at gmail.com (jsnx)
Date: Fri, 12 Oct 2007 06:07:02 -0000
Subject: the secret life of zombies
In-Reply-To: <1192153035.345531.99620@q5g2000prf.googlegroups.com>
References: <1192153035.345531.99620@q5g2000prf.googlegroups.com>
Message-ID: <1192169222.214149.32150@v23g2000prn.googlegroups.com>

Oh, by the way -- I apologize for the poor formatting of this post,
I guess my linewrap setting is wrong for nntp.



From stefan.behnel-n05pAM at web.de  Sun Oct 28 06:05:26 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Sun, 28 Oct 2007 11:05:26 +0100
Subject: elementtree w/utf8
In-Reply-To: <ffr11p$unf$1@foggy.unx.sas.com>
References: <ffr11p$unf$1@foggy.unx.sas.com>
Message-ID: <47245EE6.7050808@web.de>

Tim Arnold wrote:
> On a related note, I have another question--where/how can I get the 
> cElementTree.py module? Sorry for something so basic, but I tried installing 
> cElementTree, but while I could compile with setup.py build, I didn't end up 
> with a cElementTree.py file anywhere.

That's because it compiles into a binary extension module, not a plain Python
module (mind the 'c' in its name, which stands for the C language here).

I don't know what the standard library extension is under HP-UX, but look a
little closer at the files that weren't there before, you'll find it.
Depending on what you did to build it, it might also end up in the "build"
directory or as an installable package in the "dist" directory.


> The directory structure on my system 
> (HPux, but no root access) doesn't work well with setup.py install.

That shouldn't be a problem as long as you keep the binary in your PYTHONPATH.

As suggested before, if you have Python 2.5, you don't even need to install it
yourself.

Stefan


From f.braennstroem at gmx.de  Sat Oct 20 06:28:17 2007
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Sat, 20 Oct 2007 10:28:17 +0000
Subject: open remote terminal
References: <ff5olg$oll$2@ger.gmane.org> <ff7tk0$3dj$1@ger.gmane.org>
Message-ID: <ffce3b$eto$1@ger.gmane.org>

Hi Steve,

Steve Holden wrote:

> Fabian Braennstroem wrote:
>> Hi,
>> 
>> I would like to use python to start an terminal, e.g. xterm, and login on
>> a remote machine using rsh or ssh. This could be done using 'xterm -e ssh
>> machine', but after the login I would like to jump to a given directory.
>> Does anyone have an idea how to do this with python?
>> 
>> Regards!
>> Fabian
>> 
> pexpect would be the usual solution, I believe, if you could get it to
> interact correctly with your virtual terminal.
> 
>    http://pexpect.sourceforge.net/

Thanks for the advice!
Fabian



From root at dev.nul.invalid  Mon Oct 22 21:47:29 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 03:47:29 +0200 (CEST)
Subject: Python - why don't this script work?
Message-ID: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>

I am trying to use this cool script that some MIT guy wrote and it just 
does not work, I get a stream of errors when I try to run it. It is 
supposed to visit a URL and snag all of the pictures on the site. Here is 
the script:
http://web.mit.edu/pgbovine/www/image-harvester/image-harvester.py

Here is my output when I try to run it on my Fedora 6 machine:

[ohmster at ohmster bench]$ image-harvester.py 
http://public.fotki.com/DaGennelman/
/home/ohmster/scripts/image-harvester.py: line 59: from: command not found
[ohmster at ohmster bench]$

The script is to be folowed up with another one to weed out the small 
thumbnails and banner images, here is the base URL:
http://web.mit.edu/pgbovine/www/image-harvester/

Line 59 in image-harvester.py reads as follows:

59:	from sgmllib import SGMLParser
60:	import urllib
70:	from urlparse import urlparse, urljoin
71:	import re
72:	import os


Can anyone tell me what is wrong with this script and why it will not run? 
It does not like the command "from", is there such a command in python? 
Does this mean that python has the "import" command but not the "from" 
command or do we not know this yet as it hangs right away when it hits the 
very first word of the script, "from"? Maybe this is not a Linux script or 
something? I wonder why it needs the x-server anyway, I tried running it 
from an ssh term window and it had a fit about no x-server so now I am 
doing this in a gnome term window. This looked so cool too. :(

Please be patient with me, I do not know python at all, I just want for 
this script to work and if I see enough working examples of python, I may 
just take up study on it, but for right now, I do not know the language. 
Total newbie.

Thanks.


-- 
~Ohmster | ohmster /a/t/ ohmster dot com
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From stefan.arentz at gmail.com  Fri Oct  5 01:05:39 2007
From: stefan.arentz at gmail.com (Stefan Arentz)
Date: 05 Oct 2007 07:05:39 +0200
Subject: Is there a nicer way to do this?
References: <87ejgawpug.fsf@keizer.soze.com>
Message-ID: <87ve9mp2vw.fsf@keizer.soze.com>

Stefan Arentz <stefan.arentz at gmail.com> writes:

> Is there a better way to do the following?
> 
> attributes = ['foo', 'bar']
> 
> attributeNames = {}
> n = 1
> for attribute in attributes:
>    attributeNames["AttributeName.%d" % n] = attribute
>    n = n + 1
> 
> It works, but I am wondering if there is a more pythonic way to
> do this.

Thank you all. The trick was enumerate(), which I did not know yet :-)

 S.


From danfolkes at gmail.com  Wed Oct 24 14:25:19 2007
From: danfolkes at gmail.com (Daniel Folkes)
Date: Wed, 24 Oct 2007 18:25:19 -0000
Subject: New to Vim and Vim-Python
Message-ID: <1193250319.878477.91460@t8g2000prg.googlegroups.com>

I am new to using Vim's scripts.

I was wondering if anyone uses Vim-Python and how to use it?   This
includes things like key bindings and such.

Thanks in advance,
Daniel Folkes
danfolkes at gmail.com



From grante at visi.com  Tue Oct  9 10:47:44 2007
From: grante at visi.com (Grant Edwards)
Date: Tue, 09 Oct 2007 14:47:44 -0000
Subject: why did MIT drop scheme for python in intro to computing?
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
	<13glvegpugvbb19@corp.supernews.com>
	<1191904727.049274.203780@57g2000hsv.googlegroups.com>
Message-ID: <13gn54g98qeqa70@corp.supernews.com>

On 2007-10-09, gnuist006 at gmail.com <gnuist006 at gmail.com> wrote:

> Comparing apples with apples, how do you compare the scheme
> gui library with wxpython ? Isnt it better than Tkinter ?

I haven't used the newer Scheme GUI bindings.  I switched from
STk to tkinter, and then from tkinter to PyGTK and wxPython.  I
found Scheme much easier to use than TCL (an horrible, horrible
language, IMO), but Python is easier yet than Scheme except for
the Tk integration features.

The GTK and wxWidgets Python bindings are native bindings
rather than the TCL-hack used for tkinter, so I would expect a
native GTK or wxWidgets Scheme binding to be quite similar to a
native Python binding for the same library.  However, a lot of
extra work has gone into polishing the wxPython features above
and beyond simply the library bindings, so I wouldn't be
surprised if wxPython is better than a vanilla Scheme wxWidgets
biding.

-- 
Grant Edwards                   grante             Yow! Did an Italian CRANE
                                  at               OPERATOR just experience
                               visi.com            uninhibited sensations in
                                                   a MALIBU HOT TUB?


From bignose+hates-spam at benfinney.id.au  Sun Oct 28 21:32:17 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 29 Oct 2007 12:32:17 +1100
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
References: <87bqaihmq7.fsf@benfinney.id.au>
	<1193618281.869316.39540@v3g2000hsg.googlegroups.com>
Message-ID: <877il6hfj2.fsf@benfinney.id.au>

John Roth <JohnRoth1 at jhrothjr.com> writes:

> On Oct 28, 4:56 pm, Ben Finney <b... at benfinney.id.au> wrote:
> > What approach could we take to improve 'coverage.py' such that it
> > *can* instrument and report on all branches within the written
> > code module, including those hidden inside multi-part statements?
> 
> If I was going to do it, I'd start by recognizing that Python
> doesn't have hooks where I need them, and it doesn't have a byte
> code dedicated to a debugging hook (I think).

Is this something that Python could be improved by adding? Perhaps
there's a PEP in this.

> One last little snark: how many of us keep our statement coverage
> above 95%? Statement coverage may be the weakest form of coverage,
> but it's also the simplest to handle.

Yes, I have several projects where statement coverage of unit tests is
98% or above. The initial shock of running 'coverage.py' is in seeing
just how low one's coverage actually is; but it helpfully points out
the exact line numbers of the statements that were not tested.

Once you're actually measuring coverage as part of the development
process (e.g. set up a rule so 'make coverage' does it automatically),
it's pretty easy to see the holes in coverage and either write the
missing unit tests or (even better) refactor the code so the redundant
statements aren't there at all.

-- 
 \     "I'd like to see a nude opera, because when they hit those high |
  `\   notes, I bet you can really see it in those genitals."  -- Jack |
_o__)                                                           Handey |
Ben Finney


From alexandre.badez at gmail.com  Tue Oct 16 09:04:10 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Tue, 16 Oct 2007 13:04:10 -0000
Subject: Automatically organize module imports
In-Reply-To: <ff22jc$48p$1@newsreader2.netcologne.de>
References: <mailman.34.1192475606.13605.python-list@python.org>
	<ff1n3q$bl5$1@newsreader2.netcologne.de>
	<1192522106.394705.29570@v23g2000prn.googlegroups.com>
	<ff22jc$48p$1@newsreader2.netcologne.de>
Message-ID: <1192539850.314063.282780@v29g2000prd.googlegroups.com>

On Oct 16, 12:08 pm, Thomas Wittek <m... at gedankenkonstrukt.de> wrote:
> Great. It has a warning about unused imports. Perfect.
> (Though, it was a bit tricky to install as easy_install didn't get the
> dependencies right on Win XP)
>
> Thank you!
> --
> Thomas Wittek
> Web:http://gedankenkonstrukt.de/
> Jabber: streawkc... at jabber.i-pobox.net
> GPG: 0xF534E231

Actually, I'm using it on W2K, and I haven't got any problem during
install... :/



From iclark at mail.ewu.edu  Mon Oct  1 14:38:49 2007
From: iclark at mail.ewu.edu (Ian Clark)
Date: Mon, 01 Oct 2007 11:38:49 -0700
Subject: Combine two dictionary...
In-Reply-To: <1191261690.056215.179920@57g2000hsv.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>	<mailman.1357.1191260483.2658.python-list@python.org>
	<1191261690.056215.179920@57g2000hsv.googlegroups.com>
Message-ID: <fdrerp$8ot$1@sea.gmane.org>

Abandoned wrote:
> On 1 Ekim, 20:41, Carsten Haese <cars... at uniqsys.com> wrote:
>> On Mon, 2007-10-01 at 10:24 -0700, Abandoned wrote:
>>> Hi..
>>> dict1={1: 4,  3: 5}... and 2 millions element
>>> dict2={3: 3,  8: 6}... and 3 millions element
>>> I want to combine dict1 and dict2 and i don't want to use FOR because
>>> i need to performance.
>> You'll have to be a bit more precise here about how and where you want
>> to "combine". Should the result be a new dictionary or should it replace
>> one of dict1 or dict2? You're also not saying how you want conflicts
>> between dict1 and dict2 should be resolved. For example, both dict1 and
>> dict2 say something about the key 3. One says 5, the other says 3.
>> Should the combined dict say 3 or 5 or (3,5) or maybe even 4?
>>
>> Also, based on your earlier posts from today, I'm wondering if those
>> dicts come from executing SQL queries. If so, you might want to consider
>> combining the results in SQL (using a UNION query) instead of combining
>> them in Python.
>>
>> --
>> Carsten Haesehttp://informixdb.sourceforge.net
> 
> I want to total score..
> For example
>>> dict1={1: 4,  3: 5}... and 2 millions element
>>> dict2={3: 3,  8: 6}... and 3 millions element
> 
> result should be dict3={1:4, 3:8, 8:6}

Well not sure how this will work with 5+ million elements, but here's 
one stab at it:

     >>> dict1={1: 4,  3: 5}
     >>> dict2={3: 3,  8: 6}
     >>> for key in set(dict1.keys() + dict2.keys()):
     ...     x = dict1.get(key, 0)
     ...     y = dict2.get(key, 0)
     ...     dict3[key] = x + y
     ...
     >>> dict3
     {8: 6, 1: 4, 3: 8}

As Carsten Haese pointed out this should really be done in SQL. You 
might try something along these lines:

SELECT
   t1.id AS id,
   NVL(t1.count, 0) + NVL(t2.count, 0) AS count
FROM DUAL
LEFT JOIN (
   SELECT
     id,
     count
   FROM table1
) AS t1 ON 1=1
LEFT JOIN (
   SELECT
     id,
     count
   FROM table2
) AS t2 ON t1.id = t2.id

NOTE: I've never actually used a UNION, but you might want to look into it.

Ian




From robert.kern at gmail.com  Tue Oct  2 01:05:54 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 02 Oct 2007 00:05:54 -0500
Subject: module confusion
In-Reply-To: <1191300108.593779.318300@y42g2000hsy.googlegroups.com>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
Message-ID: <fdsjjj$f1j$1@sea.gmane.org>

mensanator at aol.com wrote:
> On Oct 1, 10:03?pm, rjcarr <rjc... at gmail.com> wrote:
>> Sorry if this is a completely newbie question ...
>>
>> I was trying to get information about the logging.handlers module, so
>> I imported logging, and tried dir(logging.handlers), but got:
>>
>> AttributeError: 'module' object has no attribute 'handlers'
> 
> What do suppose that message means?
> 
>> The only experience I have in modules is os and os.path ... if I do
>> the same thing, simply import os and then type dir(os.path), it
>> displays the contents as expected.
>>
>> So my question is ... why are they different?  
> 
> Because you misspelled it. First, do a dir() on logging:

No, he didn't. There is a logging.handlers module; it's just not imported by
importing logging.

OP: logging is a package and logging.handlers is one module in the package. Not
all of the modules in a package are imported by importing the top-level package.
os.path is a particularly weird case because it is just an alias to the
platform-specific path-handling module; os is not a package.

-- 
Robert Kern

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



From mensanator at aol.com  Mon Oct  8 21:03:47 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 18:03:47 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.1685.1191875226.2658.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
Message-ID: <1191891827.863258.23620@y42g2000hsy.googlegroups.com>

On Oct 8, 3:27 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> On 10/8/07, mensana... at aol.com <mensana... at aol.com> wrote:
>
>
>
>
>
> > On Oct 8, 1:00 pm, "J. Clifford Dyer" <j... at sdf.lonestar.org> wrote:
> > > On Mon, Oct 08, 2007 at 10:41:03AM -0700, mensana... at aol.com wrote regarding Re: pytz has so many timezones!:
>
> > > > On Oct 8, 2:32 am, Sanjay <skpate... at gmail.com> wrote:
> > > > > Hi All,
>
> > > > > I am using pytz.common_timezones to populate the timezone combo box of
> > > > > some user registration form. But as it has so many timezones (around
> > > > > 400),
>
> > > > There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> > > > +12.
>
> > > > A handful of countries set their clocks offset by a half hour,
> > > > but those aren't timezones.
>
> > > I'm sorry.  By what even vaguely useful definition of "Timezone" is it not a timezone if it's offset by half an hour?
>
> > The miltary doesn't recognize them as timezones. They'll make
> > a not that the local time observed doesn't match the timezone,
> > but they don't call it a seperate timezone.
>
> What do you mean by "the military" and why do you think they're
> authoritative on the topic of timezones?

Because they publish maps?

> The US timekeeping authority
> is a branch of the US Navy,

Isn't that "the military"?

> but as far as I know they don't define timezones.

Ok, maybe they don't define them. But they get them from somewhere
and the zones are labeled A-Z (don't ask which letter isn't used).
Zone Z is equivalent to GMT and the time is refered to as Zulu time.

That's 25 zones, not 400. Under that system there are no half-hour
offset zones, no zones based on sunset and no lunatic GMT+13 zones.

You'll never learn to run without first learning how to walk.

>
>
>
>
> > > > The 400 you're seeing are duplications based on locality. Of the 86
> > > > shown in Windows, all but 33 are dulplicate references to the same
> > > > timezones.
>
> > > > For example, Windows has seperate listings for
>
> > > > Central America
> > > > Central Time (US & Canada)
> > > > Guadalahara, Mexico City, Monterry - New
> > > > Guadalahara, Mexico City, Monterry - Old
> > > > Saskatchewan
>
> > > > but they are all GMT-6
>
> > > Those are non-duplicate (and perhaps inaccurate, I'm not sure).  US time switches from standard to Daylight Savings earlier than Mexico, and switches back later, as of this year.
>
> > Duplicate timezones doesn't mean duplicate time,
> > as you point out. Does the OP want to know the truth
> > or does he want to know something he can understand.
>
> > > Reducing them to a single time zone will result in aberrant functionality in one or more locales.
>
> > I would hardly think that's an issue on the user registration
> > form the OP is trying to create.
>
> It's not clear at all from the OPs post exactly what functionality he
> is trying to derive from the timezone.

Yep, we can't read his mind.

> Since timezones (obviously)
> contain more information than just the GMT offset

Of course. But the GMT offset could be used to filter his list
of 400 choices, couldn't it?

> (otherwise we
> wouldn't even have them), he may very well want to use the timezone
> given by the user to display correct local time to them. In this case,
> the actual, correct, political timezone is important, not just the GMT
> offset.

Agreed. But if someone gave me a list of 400 choices, I would look
for some way to reduce the list to a manageable choice. Isn't that
what the OP wants?

Why not teach him the truth, starting from the top level? Shouldn't
you teach him to fish rather than just give him one?

>
> > > Cheers,
> > > Cliff
>
> > --
> >http://mail.python.org/mailman/listinfo/python-list



From exarkun at divmod.com  Fri Oct 12 11:09:00 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Fri, 12 Oct 2007 11:09:00 -0400
Subject: Error on base64.b64decode() ?!
In-Reply-To: <1192201153.082875.45190@i13g2000prf.googlegroups.com>
Message-ID: <20071012150900.8162.1566811271.divmod.quotient.22083@ohm>

On Fri, 12 Oct 2007 14:59:13 -0000, Christoph Krammer <redtiger84 at googlemail.com> wrote:
>Hello everybody,
>
>I am using a python script to extract images from email messages. This
>works fine for some messages, but not all attached images can be
>decoded. I use the following code to decode the image and save it to a
>database:
>
>try:
>  imagedec = base64.b64decode(imageenc)
>  imagehash = md5.new(imagedec).hexdigest()
>  dbcurs.execute(<save image>)
>except TypeError, e:
>  print "Error '%s' in Message %s" % (e, dbrow[1])
>  print imageenc)
>
>The problem is that for some images, the method b64decode() returns a
>TypeError "Incorrect Padding". But if I paste the content of imageenc
>to some other base64 decode (like this one:
>http://www.php-einfach.de/base64_generator.php?code=1), I get the
>correct result.

If you get an incorrect padding error, try appending a "=" and decoding
again.  If you get the error again, try appending one more "=".  If it
still doesn't work, then you might be out of luck.

Jean-Paul


From rcdailey at gmail.com  Sun Oct 21 16:49:19 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Sun, 21 Oct 2007 15:49:19 -0500
Subject: C++ version of the C Python API?
In-Reply-To: <471BB1FA.1020704@v.loewis.de>
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
Message-ID: <496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>

On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
> I think you are misinterpreting what you are seeing. The Python C API
> *is* object-oriented. It has all features of object-orientation:
> classes, encapsulation, polymorphism, late binding, ...
>
> As for "make your own": people have tried this before; there are
> multiple C++ wrappers around the Python C API available.
>
> Regards,
> Martin

Could you emphasize a little more? I haven't worked much at all with
the Python C API, so I may be misunderstanding. First of all, you say
that the "Python C API is object oriented", which is contradictory
because it should read "Python C++ API is object oriented". Perhaps
this is a typo, or maybe you're referencing some C++ wrapper for the
Python C API that you failed to mention the name of.

You also mentioned that there are "multiple C++ wrappers arround the
Python C API Available"... could you provide names for a few of the
popular ones?

Thanks again!


From steve at holdenweb.com  Fri Oct  5 12:03:08 2007
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 05 Oct 2007 12:03:08 -0400
Subject: module confusion
In-Reply-To: <13gcn69qgkl1b09@corp.supernews.com>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>
	<13g9ch1fi5c7se5@corp.supernews.com>	<fe2dl2$4i7$3@lust.ihug.co.nz>
	<13gasot6r5bnu1a@corp.supernews.com>	<fe3svd$2nb$3@lust.ihug.co.nz>	<mailman.1557.1191561184.2658.python-list@python.org>	<13gc6alr30la682@corp.supernews.com>	<mailman.1574.1191584293.2658.python-list@python.org>
	<13gcn69qgkl1b09@corp.supernews.com>
Message-ID: <fe5n7o$t3h$1@sea.gmane.org>

Steven D'Aprano wrote:
> On Fri, 05 Oct 2007 07:37:34 -0400, Steve Holden wrote:
> 
>> Steven D'Aprano wrote:
>>> On Fri, 05 Oct 2007 00:12:33 -0500, Robert Kern wrote:
>>>
>>>> This is somewhat odd, because most modules aren't exposed that way.
>>>> They are either in their own file and accessed by importing them
>>>> directly, or they are inside a package.
>>> Any time you say:
>>>
>>> import parrot
>>>
>>>
>>> in one of your modules, you export parrot to anything that
>> subsequently
> 
> Well obviously you have to write the module before people import it. I 
> didn't really think "you must obey the laws of time and space" needed to 
> be explained.
> 
But a module needn't be fully executed before it's imported.
> 
>>> imports your
>>> module. (Unless you take specific steps to prevent it, for instance
>>> with del parrot.)
>> or the creation of an __all__ containing an exclusive list of names for
>> export.
> 
> No.
> 
> __all__ only effects names imported with "from module import *", it has 
> no effect on "import module".
> 
> What was that again about avoiding "writing anything that will be 
> misconstrued by newless cloobs unfortunate enough to reach this thread as 
> a result of a search for meaningful information on Python imports"?
> 
> 
> 
Well, precisely.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From fred.sells at adventistcare.org  Thu Oct 11 09:37:05 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Thu, 11 Oct 2007 09:37:05 -0400
Subject: Problem with MySQL cursor
In-Reply-To: <fel7m3$btq$03$1@news.t-online.com>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38E6@acesxch01.ADVENTISTCORP.NET>

I don't think you can substitute the table name and column names in the
execute, just values ( I could be wrong)

try building it like this:
sql = "INSERT INTO %s %s VALUES " % (taablename,  columnstuple, '(%s)')
cursor.execute(sql, values)

> Hello,
> I have a function that executes a SQL statement with MySQLdb:
> 
> def executeSQL(sql,  *args):
>     print sql % args
>     cursor = conn.cursor()
>     cursor.execute(sql, args)
>     cursor.close()
> 
> it's called like that:
> 
>     sql = "INSERT INTO %s (%s) VALUES (%s)"
>     executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)
> 
> The statement that is printed looks ok (missing quotes, but AFAIK
> cursor.execute does that):
> 
> INSERT INTO domains (domain) VALUES (xgm.de)
> 
> but MySQL prints an error:
> 
> Traceback (most recent call last):
>   File "manage.py", line 90, in ?
>     addDomain(domainName)
>   File "manage.py", line 27, in addDomain
>     executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)
>   File "manage.py", line 22, in executeSQL
>     cursor.execute(sql, args)
>   File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", 
> line 163, in
> execute
>     self.errorhandler(self, exc, value)
>   File 
> "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line 35,
> in defaulterrorhandler
>     raise errorclass, errorvalue
> _mysql_exceptions.ProgrammingError: (1064, "You have an error 
> in your SQL
> syntax; check the manual that corresponds to your MySQL 
> server version for
> the right syntax to use near ''domains' ('domain') VALUES 
> ('xgm.de')' at
> line 1")
> 
> I see the error: 2 opening quotes but only 1 closing around 
> domains. But
> where do they come from?
> 
> Note that there are no quotes at print sql % args.
> 
> Thanks,
> 
> Florian
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


From torriem at chem.byu.edu  Sun Oct 21 19:29:25 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Sun, 21 Oct 2007 17:29:25 -0600
Subject: C++ version of the C Python API?
In-Reply-To: <496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
References: <mailman.230.1192833455.13605.python-list@python.org>	<471B8711.1020509@v.loewis.de>	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>	<471BB1FA.1020704@v.loewis.de>	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>	<471BBD55.9030601@v.loewis.de>
	<496954360710211417v72d9bdd1ia9ff9bdde30892c1@mail.gmail.com>
Message-ID: <471BE0D5.9080908@chem.byu.edu>

Robert Dailey wrote:
> On 10/21/07, "Martin v. L?wis" <martin at v.loewis.de> wrote:
>> No, I literally meant that the Python C API is object-oriented.
>> You don't need an object-oriented language to write object-oriented
>> code.
> 
> I disagree with this statement. C is not an object oriented language,
> and I've seen attempts to make it somewhat object oriented, however it
> failed miserably in readability and manageability overhead. However,
> this isn't the place to discuss such a thing so I've got nothing more
> to say than that.

Guess you haven't programmed in GTK+ on C, then.  Very heavy in
object-oriented programmin.  C++'s OOP stuff is just pure syntactic
sugar, nothing more, nothing less.

Python's OO nature is a bit deeper, since we're talking a dynamic
language.  Scheme, another dynamic language, is not inherently OO or
non-OO.  You can use it in either fashion.

> 
> I do appreciate you taking the time to respond to my inquiry and offer
> a few C++ wrapper API's for the Python C API. Take care!

Any C++ version of the python API is by definition going to be a wrapper
around the C version.  Even the C version is a wrapper around the python
object model.


From dmitrey.kroshko at scipy.org  Thu Oct 18 15:22:37 2007
From: dmitrey.kroshko at scipy.org (dmitrey)
Date: Thu, 18 Oct 2007 12:22:37 -0700
Subject: problem with Python class creating
Message-ID: <1192735357.724298.55500@v29g2000prd.googlegroups.com>

Hi all,
I have the code like this one:

from myMisc import ooIter
class MyClass:
    def __init__(self): pass
    iterfcn = lambda *args: ooIter(self) # i.e pass the class instance
to other func named ooIter
    field2 = val2
    field3 = val3 # etc

So it yields "global name 'self' is not defined", that is true. How
could I handle the situation?

Currently I do (and it works, but give me some troubles - I should
call MyClass.__init__ for each children class, and there are lots of
those ones)

class MyClass:
    def __init__(self):
        iterfcn = lambda *args: ooIter(self) # i.e pass the class
instance to other func named ooIter
    field2 = val2
    field3 = val3 # etc

I suspect it has better solution, is it?
Thank you in advance, Dmitrey



From python.list at tim.thechases.com  Thu Oct  4 16:28:47 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 04 Oct 2007 15:28:47 -0500
Subject: unit testing
In-Reply-To: <6_udnRkbgtrK1ZjanZ2dnUVZ_g-dnZ2d@comcast.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>	<1191525695.786834.315520@50g2000hsm.googlegroups.com>
	<6_udnRkbgtrK1ZjanZ2dnUVZ_g-dnZ2d@comcast.com>
Message-ID: <47054CFF.3070005@tim.thechases.com>

>>> Does anyone else feel that unittesting is too much work? Not in general,
>>> just the official unittest module for small to medium sized projects?
> [snip]
>>  I actually do a lot of unit testing. I find it both annoying and
>> highly necessary and useful.
> 
> +1 QOTW.
> 
> I feel exactly the same way.  Writing tests (whether you use unittest, 
> doctest, py.test or whatever) is always a pain and a time sink. But 
> writing those tests catches so many bugs that it's worth it for any code 
> you expect to use more than twice. =)

If test-driven development doesn't appeal, you might prefer Titus 
Brown's methodology from PyCon '07:

"""
I don't do test-driven development; I do stupidity-driven 
testing. When I do something stupid, I write a test to make sure 
I don't do it again.
"""

http://ivory.idyll.org/blog/feb-07/stupidity-driven-testing

-tkc





From http  Wed Oct 17 10:07:52 2007
From: http (Paul Rubin)
Date: 17 Oct 2007 07:07:52 -0700
Subject: Can you determine the sign of the polar form of a complex number?
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
	<1192629071.834342.243370@i38g2000prf.googlegroups.com>
Message-ID: <7xlka16dhj.fsf@ruckus.brouhaha.com>

schaefer.mp at gmail.com writes:
> Just to clarify what I'm after:
> If you plot (-3)^n where n is a set of negative real numbers between 0

I still can't figure out for certain what you're asking, but you might
look at the article

http://en.wikipedia.org/wiki/De_Moivre%27s_formula


From paul.melis at gmail.com  Wed Oct 17 05:20:30 2007
From: paul.melis at gmail.com (paul.melis at gmail.com)
Date: Wed, 17 Oct 2007 02:20:30 -0700
Subject: Static variable vs Class variable
In-Reply-To: <Xns99CC6729BAC69duncanbooth@127.0.0.1>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
Message-ID: <1192612830.110577.153790@i13g2000prf.googlegroups.com>

On Oct 17, 11:08 am, Duncan Booth <duncan.bo... at invalid.invalid>
wrote:
> paul.me... at gmail.com wrote:
> > Curious, do you have the relevant section in the docs that describes
> > this behaviour?
>
> Yes, but mostly by implication. In section 3.4.7 of the docs, the sentence
> before the one you quoted says:
>
>   These methods should attempt to do the operation in-place (modifying
>   self) and return the result (which could be, but does not have to be,
>   self).
>
> The 'does not have to be self' tells you that the result of __iadd__ is
> used, i.e there is still an assignment going on.
>
> Just read all of that paragraph carefully. It says that if there is no
> __iadd__ method it considers calling __add__/__radd__. Nowhere does it say
> that it handles the result of calling the methods differently.

Right, the paragraph is actually pretty clear after a second reading.
I find it surprising nonetheless, as it's easy to forget to return a
result when you're implementing a method that does an in-place
operation, like __iadd__:

>>> class C:
...     def __init__(self, v):
...             self.v = v
...     def __iadd__(self, other):
...             self.v += other
...
>>> c=C(1)
>>> c.v
1
>>> c += 3
>>> c
>>> c is None
True


Paul



From Eric_Dexter at msn.com  Thu Oct 11 22:00:59 2007
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: Thu, 11 Oct 2007 19:00:59 -0700
Subject: looking for ways to include python in pascal distro
Message-ID: <1192154459.627552.220810@q3g2000prf.googlegroups.com>

I have found a couple of ways to include python in my pascal program

http://arctrix.com/nas/python/standalone.html

and an example I compiled from the embeded examples and I was wanting
to know if there are more examples or comiled versions I can execute
from my program...  I am getting an error from the embeded and the
standalone would work better with command line support



From tjandacw at yahoo.com  Fri Oct  5 10:33:39 2007
From: tjandacw at yahoo.com (timw.google)
Date: Fri, 05 Oct 2007 07:33:39 -0700
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
Message-ID: <1191594819.381604.20680@o80g2000hse.googlegroups.com>

Hi

I want to write a python script that runs rsync on a given directory
and host. I build the command line string, but when I try to run
subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
os.system(cmd), I get prompted for my login password. I expected this,
but when I try to give my password, it's echoed back to the terminal
and the special characters in the password is (I think) getting
interpreted by the shell (zsh)

I can't ssh w/o supplying a password. That's the way the security is
set up here.

How do I use python to do this, or do I just have to write a zsh
script?

Thanks.



From rjh at cyberscience.com  Wed Oct 10 06:52:44 2007
From: rjh at cyberscience.com (Richie Hindle)
Date: Wed, 10 Oct 2007 11:52:44 +0100
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1192010718.604966.277190@19g2000hsx.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
	<1191935665.284553.110020@r29g2000hsg.googlegroups.com>
	<1191958556.735855.199180@22g2000hsm.googlegroups.com>
	<1191961946.278597.91810@k79g2000hse.googlegroups.com>
	<1192010718.604966.277190@19g2000hsx.googlegroups.com>
Message-ID: <lkbpg351721roem3ojdrke0bh3od5aq7vg@4ax.com>


[Paul]
> tell us how the software compares to stuff like Lucene or Xapian.

+1

-- 
Richie


From gagsl-py2 at yahoo.com.ar  Mon Oct 22 03:24:41 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 22 Oct 2007 00:24:41 -0700
Subject: Get the instance name from a list by Reflection
In-Reply-To: <mailman.268.1192920257.13605.python-list@python.org>
References: <57045.94694.qm@web90513.mail.mud.yahoo.com>
	<mailman.268.1192920257.13605.python-list@python.org>
Message-ID: <1193037881.186057.231160@t8g2000prg.googlegroups.com>


--- sccs cscs <zorg724 at yahoo.fr> escribi?:

> Thank you, but i believe that i could get all
> variables names that reference an instance: i need
> it for a special debug tool... It seems that
> knowledge exists somewhere into the Python
> interpreter...

Please read first the FAQ item posted previously, and this article:
http://effbot.org/zone/python-objects.htm
Then it should be clear that any object may be referenced by one name,
many names, or no name at all. By example:

py> a = [1, 2, 3]
py> b = "four"
py> a.append(b)
py> a
[1, 2, 3, 'four']
py> b = 5
py> c = b
py> id(b)
10049608
py> id(c)
10049608
py> b is c
True

In this case there is only one name referencing the list (a), two
names referencing the number 5 (b and c), and no name referencing the
string "four", altough it was earlier known as b.
Python is built around namespaces: mappings FROM names TO objects. A
name refers to a single object, but the inverse is not true. You can
invert the relation examining possible namespaces and seeing if the
object is referenced, and by which names. Something like this:

py> def invert(obj, namespace):
...   result = []
...   for key,value in namespace.iteritems():
...     if value is obj:
...       result.append(key)
...   return result
...
py> invert(a, globals())
['a']
py> invert(5, globals())
['c', 'b']
py> invert(123, globals())
[]
py> invert([1, 2, 3, 'four'], globals())
[]

You can pass globals(), locals(), vars(some_object) as the namespace
argument.

--
Gabriel Genellina



From lukasz.f24 at gmail.com  Thu Oct 18 05:21:18 2007
From: lukasz.f24 at gmail.com (lukasz.f24 at gmail.com)
Date: Thu, 18 Oct 2007 02:21:18 -0700
Subject: MOD_PYTHON + packages reloading
In-Reply-To: <Xns99CD64546C554duncanbooth@127.0.0.1>
References: <1192694766.953529.25270@k35g2000prh.googlegroups.com>
	<Xns99CD64546C554duncanbooth@127.0.0.1>
Message-ID: <1192699278.975882.224480@i38g2000prf.googlegroups.com>

On 18 Oct, 09:55, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> lukasz.... at gmail.com wrote:
> > I came across annoying problem during my fun with mod_python. I turned
> > out that mod_python load package only onca and don't care about any
> > changes to it. Obviously it makes sense on production server but
> > during development is more then annoying.
>
> Have you read the mod_python manual?
>
> http://www.modpython.org/live/current/doc-html/dir-other-par.html
>
> 5.4.8 PythonAutoReload
>
> Syntax: PythonAutoReload {On, Off}
> Default: PythonAutoReload On
> Context: server config, virtual host, directory, htaccess
> Override: not None
> Module: mod_python.c
>
> If set to Off, instructs mod_python not to check the modification date
> of the module file.
>
> By default, mod_python checks the time-stamp of the file and reloads the
> module if the module's file modification date is later than the last
> import or reload. This way changed modules get automatically reimported,
> eliminating the need to restart the server for every change.
>
> Disabling autoreload is useful in production environment where the
> modules do not change; it will save some processing time and give a
> small performance gain.

Yes I have read it. This is my config file
<VirtualHost *:80>
    ServerName info
    DocumentRoot D:/web/info/
    <Directory "D:/web/info/">
      AddHandler mod_python .py
      PythonHandler index
      PythonDebug On
      PythonAutoReload On
      AllowOverride All
      Allow from All
      AllowOverride All
    </Directory>
</VirtualHost>

Even when autoreload is ON mod_python doesn't care about any changes
if I import something from package in traditional way :(



From guettli.usenet at thomas-guettler.de  Fri Oct 19 04:56:00 2007
From: guettli.usenet at thomas-guettler.de (Thomas Guettler)
Date: 19 Oct 2007 08:56:00 GMT
Subject: CGI Server that supports redirects
Message-ID: <5nr9p0Fja45tU1@mid.individual.net>

Hi,

CGIHTTPServer does not support redirects[1]

Is there an other python-only way to get a web server
running wich can execute python code?

Since I already use flup[2]. I think there is not much
missing to get it serving as http server.

Has anyone hints?


[1] http://docs.python.org/lib/module-CGIHTTPServer.html
[2]http://trac.saddi.com/flup

-- 
Thomas G?ttler, http://www.thomas-guettler.de/ http://www.tbz-pariv.de/
E-Mail: guettli (*) thomas-guettler + de
Spam Catcher: niemand.leermann at thomas-guettler.de



From michele.simionato at gmail.com  Sun Oct  7 02:35:47 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sun, 07 Oct 2007 06:35:47 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <4707be3e$0$26696$426a74cc@news.free.fr>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1191677381.068666.65870@k79g2000hse.googlegroups.com>
	<4707be3e$0$26696$426a74cc@news.free.fr>
Message-ID: <1191738947.789865.33700@19g2000hsx.googlegroups.com>

On Oct 6, 12:57 pm, Bruno Desthuilliers
> Michele Simionato a ?crit :
>
> > I looked at the source code and it seems fine to me, but I have
> > not used it directly, not stressed it. I need a
> > production-level WSGI session middleware and I wonder what the
> > players are (for instance how Beaker does compare with flup?)
>
> Can't tell, but I'd trust the Pylons team on this kind of choices.
> They're doing good job so far AFAICT.

Probably Beaker works well, but it is certainly NOT doing things
as Eby recommends:

http://dirtsimple.org/2007/02/wsgi-middleware-considered-harmful.html

BTW, I know that Eby is asking opinions about WSGI 2.0 on the
WSGI SIG and interested people may have a look there.

           Michele Simionato



From carsten at uniqsys.com  Mon Oct  1 13:21:43 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 13:21:43 -0400
Subject: Select as dictionary...
In-Reply-To: <1191258828.206660.21570@22g2000hsm.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
	<47010e97$0$7777$426a74cc@news.free.fr>
	<1191258548.820547.123560@k79g2000hse.googlegroups.com>
	<1191258828.206660.21570@22g2000hsm.googlegroups.com>
Message-ID: <1191259303.3393.49.camel@dot.uniqsys.com>

On Mon, 2007-10-01 at 10:13 -0700, Abandoned wrote:
> Also if i need a list id what can i do ?
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> 
> I want to..
> 
> idlist=[1, 2, 3] ( I don't want to use FOR and APPEND because the
> query have 2 million result and i want to speed)

The canonical replacement for a for/append loop is a list comprehension:

idlist = [x[0] for x in links]

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From tavspamnofwd at googlemail.com  Wed Oct  3 13:56:25 2007
From: tavspamnofwd at googlemail.com (tavspamnofwd at googlemail.com)
Date: Wed, 03 Oct 2007 17:56:25 -0000
Subject: How can I access MySQL Version 4.1.22 from Python 2.2.3 ???
Message-ID: <1191434185.570828.84860@d55g2000hsg.googlegroups.com>

Hi all,

I would like to use Python with MySQL to create a database backend for
my website. Therefore I look at the module MySQLdb.

However the hosting my organisation uses has:

Python 2.2.3 (#1, Dec 21 2006, 18:29:13)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-56)]

MySQL Version 4.1.22-standard-log


Some web surfing reveals:
MySQLdb 1.20 requires Python 2.3.4 so I would have to use MySQLdb
1.0.1

BUT MySQLdb 1.0.1 is compatible with MySQL-3.22, 3.23, and 4.0 ( * * *
not 4.1 or newer * * * ).

So there is no version of MySQLdb that works with my versions of
Python and MySQL???

Is this correct? Is there a different module I can use instead?

Please help me because the other option is to change the domain to a
windows server and use asp.net, which I would rather not do :)

Thanks in advance,
Tom



From dpholmes at gmail.com  Mon Oct 22 21:06:15 2007
From: dpholmes at gmail.com (dpholmes at gmail.com)
Date: Tue, 23 Oct 2007 01:06:15 -0000
Subject: web.py & postgresql error
Message-ID: <1193101575.928334.17790@e9g2000prf.googlegroups.com>

hi everyone, i'm very new to python and to this forum.  i'm actually
just trying to work through the tutorial on webpy.org.  so far, so
good, but as i tried to incorporate a postgresql database into the
demo web app i'm receiving this error print out:

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/web/wsgiserver/__init__.py",
line 624, in communicate
    req.respond()
  File "/usr/lib/python2.5/site-packages/web/wsgiserver/__init__.py",
line 357, in respond
    response = self.wsgi_app(self.environ, self.start_response)
  File "/usr/lib/python2.5/site-packages/web/httpserver.py", line 200,
in __call__
    return self.app(environ, xstart_response)
  File "/usr/lib/python2.5/site-packages/web/http.py", line 255, in
__call__
    return self.func(e, o)
  File "/usr/lib/python2.5/site-packages/web/webapi.py", line 302, in
wsgifunc
    _load(env)
  File "/usr/lib/python2.5/site-packages/web/webapi.py", line 258, in
_load
    load()
  File "/usr/lib/python2.5/site-packages/web/webapi.py", line 253, in
load
    db.connect(**config.db_parameters)
  File "/usr/lib/python2.5/site-packages/web/db.py", line 265, in
connect
    import pgdb as db
ImportError: No module named pgdb

any thoughts would be greatly appreciated.
thanks,
doug



From tjandacw at yahoo.com  Fri Oct  5 11:37:05 2007
From: tjandacw at yahoo.com (timw.google)
Date: Fri, 05 Oct 2007 08:37:05 -0700
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
In-Reply-To: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
Message-ID: <1191598625.701334.3450@57g2000hsv.googlegroups.com>

On Oct 5, 10:33 am, "timw.google" <tjand... at yahoo.com> wrote:
> Hi
>
> I want to write a python script that runs rsync on a given directory
> and host. I build the command line string, but when I try to run
> subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
> os.system(cmd), I get prompted for my login password. I expected this,
> but when I try to give my password, it's echoed back to the terminal
> and the special characters in the password is (I think) getting
> interpreted by the shell (zsh)
>
> I can't ssh w/o supplying a password. That's the way the security is
> set up here.
>
> How do I use python to do this, or do I just have to write a zsh
> script?
>
> Thanks.

I wrote a zsh script to do what I wanted, but I'd still like to know
how to do it in Python.



From rajarshi.guha at gmail.com  Sat Oct 27 12:02:34 2007
From: rajarshi.guha at gmail.com (Rajarshi)
Date: Sat, 27 Oct 2007 09:02:34 -0700
Subject: mod_python, ElementTree and Aapche 2.0
Message-ID: <1193500954.338574.53960@o3g2000hsb.googlegroups.com>

Hi, this is a slightly vague question but I'm really puzzled as to
when I write a mod_python (3.1.3) program that makes use of
ElementTree and call it via a URL, the program simply stops when I do
something like

s = # some XML document in a string
root = XML(s)

There is no exception at all - the browser just shows a blank page

But running the code outside of the web server makes it run fine.

This is on a RHEL 4 machine, with Apache 2.0.52 and Python 2.3.4

Has anybody ever seen this type of behavior?

Thanks,



From exarkun at divmod.com  Tue Oct 23 12:30:46 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 23 Oct 2007 12:30:46 -0400
Subject: Adding idle timeout capabilities to asyncore
In-Reply-To: <1193153659.869282.34310@v23g2000prn.googlegroups.com>
Message-ID: <20071023163046.8162.1970075496.divmod.quotient.26868@ohm>

On Tue, 23 Oct 2007 15:34:19 -0000, Josiah Carlson <josiah.carlson at gmail.com> wrote:
> [snip]
>
>Calling time.time() is relatively inexpensive in comparison to pure
>Python function calls, but indeed, it could be a bottleneck.

Did you benchmark this on some system?

There isn't really any "pure Python function calls" that can replace
time.time() in a sensible way, so I made up one that does some random
things (including calling another Python function) and compared it to
time.time:

  exarkun at charm:~$ python -m timeit -s '
  def g():
      return 1. + 2 + 3 * 4 - 5 / 6 + 7 ** 8
  def f():
      return g()
  ' 'f()'
  1000000 loops, best of 3: 1.39 usec per loop
  exarkun at charm:~$ python -m timeit -s 'from time import time as f' 'f()'
  100000 loops, best of 3: 4.68 usec per loop
  exarkun at charm:~$

Not really useful in any real-world sense, but I still wouldn't
characterize time.time as "relatively inexpensive."

Of course, for any real-world work, one would want to profile the
application to determine if removing calls to time.time() could
make a worthwhile difference.

Jean-Paul


From george.sakkis at gmail.com  Fri Oct 12 17:54:42 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Fri, 12 Oct 2007 21:54:42 -0000
Subject: test if email
In-Reply-To: <feon78$m0k$2@solaris.cc.vt.edu>
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
	<feon78$m0k$2@solaris.cc.vt.edu>
Message-ID: <1192226082.234159.249960@i13g2000prf.googlegroups.com>

On Oct 12, 4:59 pm, brad <byte8b... at gmail.com> wrote:
> kyoso... at gmail.com wrote:
> > On Oct 12, 2:55 pm, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> >> Hello,
> >> is there a function in the Python stdlib to test if a string is a valid
> >> email address?
>
> here's a Perl re example... I don't know whether to laugh or cry...
> don't try to replicate this in Python or you'll hurt yourself. :)
>
> "... the only sure way to see if a supplied email address is genuine is
> to send an email to it and see if the user recieves it."
>
> http://ex-parrot.com/~pdw/Mail-RFC822-Address.html

Gotta love the comment: "somewhat pushes the limits of what it is
sensible to do with regular expressions".

Now if this is not an understatement I don't know what is!



From alexandre.badez at gmail.com  Wed Oct 17 08:49:27 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Wed, 17 Oct 2007 12:49:27 -0000
Subject: Dynamic and lazy import
In-Reply-To: <47159d0a$0$11389$9b622d9e@news.freenet.de>
References: <1192540610.799241.236160@t8g2000prg.googlegroups.com>
	<47159d0a$0$11389$9b622d9e@news.freenet.de>
Message-ID: <1192625367.751188.241210@y27g2000pre.googlegroups.com>

Thanks for all your advices, but it's not really what I would like to
do.

I'm going to be more clearer for what I really want to do.

Here we have got many library for different applications. All those
library have a version and between a version and an other, there isn't
always a very good backward compatibility (I know, it's very ugly, but
it's like that...).

Moreover some library use the version 1.1 and some the version 1.2 of
lib A and version 2.1 and version 2.0 of lib B ... you know what: it's
very ugly.

My idea was to be able to use lib quiet like that.

import A (<- If I want to use the very last version)
# or
import A.1_1 (<- If I want to use the version 1.1 of the A lib)

Something else ?
Yes :)
I do not want to add all those path in PYTHONPATH (would be too ugly,
and "complicated").
I want it lazy (do not import every version of every lib every time)
I want it scalable: if a user or the admin add a new lib or a version
of lib it would be very very great if he had nothing else (than copy
his directory) to do.

So what I wanted to do, was to be able to control what the user really
wanted to import, and act he excepted and put the "intelligence" in a
__init__ script



From thomas.weholt at gmail.com  Wed Oct 10 06:08:01 2007
From: thomas.weholt at gmail.com (Thomas W)
Date: Wed, 10 Oct 2007 03:08:01 -0700
Subject: pyxml package not working? No xml.dom.ext.reader module available
	after install.
In-Reply-To: <470C97D1.4050300@web.de>
References: <1192005595.981054.150530@22g2000hsm.googlegroups.com>
	<470C97D1.4050300@web.de>
Message-ID: <1192010881.614058.287540@y42g2000hsy.googlegroups.com>

On 10 Okt, 11:13, Stefan Behnel <stefan.behnel-n05... at web.de> wrote:
> Thomas W wrote:
> > I've tried to install the pyxml-package, available athttp://pyxml.sourceforge.net/,
> > both from source and using some hack on the win32-binary package
> > available for python2.4, but without luck. After install the module
> > xml.dom.ext.reader is not available, eventhough the folder, __init__py
> > and everything is in place.
>
> > Why? And could someone please make a win32-binary package of pyxml for
> > python2.5? Thanks!
>
> PyXML has not been actively maintained for some years now. Use ElementTree or
> lxml instead.
>
> http://codespeak.net/lxml
>
> Stefan

But the problem is that I'm using some piece of code that needs pyxml.
Wouldn't be a problem if I was developing this project myself.

Thomas



From simon at brunningonline.net  Tue Oct 23 05:16:20 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 23 Oct 2007 10:16:20 +0100
Subject: Monitoring external processes
In-Reply-To: <1193116191.769987.198560@z24g2000prh.googlegroups.com>
References: <1193116191.769987.198560@z24g2000prh.googlegroups.com>
Message-ID: <8c7f10c60710230216r14398bk9c0bd3408a2d671@mail.gmail.com>

On 10/23/07, arunasunil at gmail.com <arunasunil at gmail.com> wrote:
> Is there a way to track external processes launched by python on the
> Mac? I am using subprocess module to launch the process.

Depending on how much detail you are looking for, PSI might be worth a look.

http://www.psychofx.com/psi/

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From erik at myemma.com  Fri Oct 12 16:36:07 2007
From: erik at myemma.com (Erik Jones)
Date: Fri, 12 Oct 2007 15:36:07 -0500
Subject: stderr is a lame hack?
Message-ID: <2FE5D169-0863-42E3-9FFC-1B80574FF89D@myemma.com>

So, I was just taking a look at doctest.py and saw this:

Then running the module as a script will cause the examples in the
docstrings to get executed and verified:

python M.py

This won't display anything unless an example fails, in which case the
failing example(s) and the cause(s) of the failure(s) are printed to  
stdout
(why not stderr? because stderr is a lame hack <0.2 wink>), and the  
final
line of output is "Test failed.".


What does he mean by stderr being a lame hack?


Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From bignose+hates-spam at benfinney.id.au  Tue Oct 16 08:18:14 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 22:18:14 +1000
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<ff27mh$n3v$1@news2.u-psud.fr>
Message-ID: <87tzor2qyh.fsf@benfinney.id.au>

Laurent Pointal <laurent.pointal at limsi.fr> writes:

> juan at juanreyero.com a ?crit :
> > I am happy to announce the first release of magnitude, a library
> > for computing with physical quantities. It is released under the
> > Apache v. 2 license.
> > [...]
> > Home page: http://juanreyero.com/magnitude/ 
> 
> How does it compare to the scalar module ?
> (see http://russp.us/scalar.htm )

My first response is that its web page appearance compares very
favourably. (Those backgrounds! Ugh!)

My second is that (as of a few hours ago) the magnitude documentation
doesn't make the 'from foo import *' mistake that scalar does :-)

-- 
 \      "God forbid that any book should be banned. The practice is as |
  `\               indefensible as infanticide."  -- Dame Rebecca West |
_o__)                                                                  |
Ben Finney


From equand at gmail.com  Wed Oct 24 22:18:21 2007
From: equand at gmail.com (equand at gmail.com)
Date: Wed, 24 Oct 2007 19:18:21 -0700
Subject: delineating by comma where commas inside quotation marks don't
	count
In-Reply-To: <qJSTi.14839$na2.5524@trndny08>
References: <qJSTi.14839$na2.5524@trndny08>
Message-ID: <1193278701.701309.110520@i38g2000prf.googlegroups.com>

On Oct 25, 3:56 am, "Junior" <mlon... at verizon.net> wrote:
> I want to open a text file for reading and delineate it by comma.  I also
> want any data
> surrounded by quotation marks that has a comma in it, not to count the
> commas inside the
> quotation marks
>
> if the file testfile.txt contains the following;
>
> 5,Tuesday,"May is a spring month",Father's Day
> 1,Saturday,"June,July and August",Independance Day
>
> and I write the following program
>
> fname = open('testfile.txt', 'r')
> ct=1
> while ct != 3:
>     rd=(fname.readline())
>     filedata=rd.split(',')
>     print "var2=",filedata[2]
>     ct +=1
>
> fname.close
>
> filedata[2] will = "May is a spring month"; on the first pass and
>
> filedata[2] will = "June;  on the second pass
>
> How do I get filedata[2] to = "June,July and August" on the second pass
>
> and filedata[3] to = Independance Day

why not using csv?
but u would better put all strings into ""
else u can

r = open('file').read().splitlines()

for i in r:
    l1 = i.split(',',2)
    l2 = l1.pop().rsplit(',',1)
    print l1+l2



From aahz at pythoncraft.com  Mon Oct 22 01:16:12 2007
From: aahz at pythoncraft.com (Aahz)
Date: 21 Oct 2007 22:16:12 -0700
Subject: C++ version of the C Python API?
References: <mailman.230.1192833455.13605.python-list@python.org>
Message-ID: <ffhbms$nlv$1@panix3.panix.com>

In article <mailman.230.1192833455.13605.python-list at python.org>,
Robert Dailey <rcdailey at gmail.com> wrote:
>
>Is there a C++ version of the C Python API packaged with python 2.5?
>It would be nice to have a OOP approach to embedding python in C++. It
>would also be a bonus if this C++ Python API cleaned up a lot of the
>messy code involved in embedding python.

One other thing: you may get more advice from C++-sig and/or capi-sig;
mail.python.org has the info for subscribing to those.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

The best way to get information on Usenet is not to ask a question, but
to post the wrong information.


From paul.hankin at gmail.com  Wed Oct 24 08:54:14 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 24 Oct 2007 12:54:14 -0000
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <1193230454.859195.197840@e9g2000prf.googlegroups.com>

On Oct 24, 1:09 pm, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this code
>
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
>
> I think there is a better way, but I can't see how...

import operator
return filter(cls.dArguments), filter(operator.not_, cls.dArguments)

Or just:

mandatory = [arg for arg in cls.dArguments in arg]
optional = [arg for arg in cls.dArguments in not arg]
return mandatory, optional

--
Paul Hankin



From f.guerrieri at gmail.com  Sun Oct  7 17:47:32 2007
From: f.guerrieri at gmail.com (Francesco Guerrieri)
Date: Sun, 7 Oct 2007 23:47:32 +0200
Subject: finding out the call (and not only the caller)
Message-ID: <79b79e730710071447p1817d7c3ke5104030b018bf3f@mail.gmail.com>

Hi,

Today I've been thinking a bit about the "python internals". Inspired
by this recipe:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66062
I found out a little problem which haven't been able to solve.
In short, is there a way to find out how a given name lookup was started?
It is not enough to know the name of the caller as given by the recipe.

a little example:
import inspect

class test(object):
    def __init__(self, a_list):
        self.my_list = a_list
    def info(self):
        for counter, item in
enumerate(inspect.getouterframes(inspect.currentframe())):
            print counter, item
        return self.my_list
     data = property(info)

if __name__ == '__main__':
    a = test([1111,2222])
    def g(a_seq):
        for item in a_seq:
            print item, '\n'
    g(a.data)

This prints
0 (<frame object at 0x00B58B08>, 'myfile.py', 10, 'info', ['
for counter, item in
enumerate(inspect.getouterframes(inspect.currentframe())):\n'], 0)
1 (<frame object at 0x00A5B000>, 'myfile.py', 38, '<module>', ['
g(a.data)\n'], 0)
1111
2222

What I would like is a reference to g itself, and not only to
'<module>' which is the caller according to f_code.co_name.
I thought of manually parsing the string '    g(a.data)\n' to extract
the name but I'm sure that it would be a rather fragile approach, and
so I decided that it was time to ask for help :-)
To 'get a feeling', I tried to disassemble the code:

    code = compile('g(a.data)', 'test', 'single')
    dis.dis(code)

and this is the result

0 LOAD_NAME                0 (g)
3 LOAD_NAME                1 (a)
6 LOAD_ATTR                2 (data)
9 CALL_FUNCTION            1
12 PRINT_EXPR
13 LOAD_CONST               0 (None)
16 RETURN_VALUE

So ... I'm looking for the first name loaded. Is there a reference to
it, somewhere?

Francesco


From kwmsmith at gmail.com  Mon Oct 15 14:49:28 2007
From: kwmsmith at gmail.com (Kurt Smith)
Date: Mon, 15 Oct 2007 13:49:28 -0500
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <47137F75.1030003@islandtraining.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
	<47137F75.1030003@islandtraining.com>
Message-ID: <c266a7930710151149n3c5f5e6l6fc6b8b0965e8dfd@mail.gmail.com>

On 10/15/07, Gary Herron <gherron at islandtraining.com> wrote:
> Dmitri O.Kondratiev wrote:
> > Gary, thanks for lots of info!
> > Python strings are not lists! I got it now. That's a pity, I need two
> > different functions: one to reverse a list and one to reverse a string:
> True, they are not both lists, but they *are* both sequences, with some
> things in common.  In particular xs[::-1] will reverse both types of
> objects.  And even if you roll you own reversal function, you don't need
> two.  One will do.
>
> Gary Herron
>
> >
> > def reverseList(xs):
> >     if xs == []:
> >         return xs
> >     else:
> >         return (reverseList (xs[1:])) + [xs[0]]
> >
> > def reverseStr(str):
> >     if str == "":
> >         return str
> >     else:
> >         return (reverseStr (str[1:])) + str[0]
> >
> > Ok. Now regarding in-place reversal of a list:
> >
> > >>> l = [1,2,3]
> > >>> l
> > [1, 2, 3]
> > >>> l.reverse()
> > >>> l
> > [3, 2, 1]
> >
> > That was, as I expected. Good.
> >
> > Then why this ? :
> >
> > >>> ls = [1,2,3].reverse()
> > >>> ls
> > >>>
> > >>> print [1,2,3].reverse()
> > None
> > >>>
> > I mean, why ls is empty after assignment?
> >
> > Also, I couldn't find in the Python docs what this form of slicing means:
> > xs[::-1]  ?
> >
> > It works for creating a reversed copy of either a string or a list,
> > but what does '::-1' syntax means?

mylist[::-1] is interpreted as mylist[slice(None,None,-1)], and the
slice object has a method, 'indices' that computes the right endpoints
for what you want to do.

So:

>>> myseq = (1,2,3)
>>> myseq[::-1]
(3, 2, 1)
>>> myseq[slice(None,None,-1)]
(3, 2, 1)
>>> myseq[None:None:-1]
(3, 2, 1)

etc.



> >
> > Thanks,
> >
> > Dmitri O. Kondratiev
> > dokondr at gmail.com <mailto:dokondr at gmail.com>
> > http://www.geocities.com/dkondr
> >
> > On 10/15/07, *Gary Herron* < gherron at islandtraining.com
> > <mailto:gherron at islandtraining.com>> wrote:
> >
> >     Dmitri O.Kondratiev wrote:
> >     >
> >     > The function I wrote (below) reverses lists all right:
> >     >
> >     > def reverse(xs):
> >     >     if xs == []:
> >     >         return []
> >     >     else:
> >     >         return (reverse (xs[1:])) + [xs[0]]
> >     >
> >     >
> >     > >>> reverse ([1,2,3])
> >     > [3, 2, 1]
> >     > >>>
> >     >
> >     >
> >     > Yet when I try to reverse a string I  get:
> >     >
> >     > >>> reverse ("abc")
> >     >
> >     > ...
> >     > ...
> >     > ...
> >     >
> >     >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> >     >
> >     >     return (reverse (xs[1:])) + [xs[0]]
> >     >
> >     >   File "C:\wks\python-wks\reverse.py", line 5, in reverse
> >     >
> >     >     return (reverse (xs[1:])) + [xs[0]]
> >     >
> >     >   File "C:\wks\python-wks\reverse.py", line 2, in reverse
> >     >
> >     >     if xs == []:
> >     >
> >     > RuntimeError: maximum recursion depth exceeded in cmp
> >     >
> >     > >>>
> >     >
> >     > What's wrong? Why recursion never stops?
> >     >
> >     If you are doing this as an python-learning exercise, then read
> >     on.   If
> >     you are doing this reversal for real code, then try:
> >
> >       xs.reverse() for in-place reversal of a list (but not a string), or
> >       result = xs[::-1] for creating a reversed copy of either a
> >     string or a
> >     list
> >
> >
> >     Your recursion stops when xs == [], but when you're stripping
> >     characters
> >     off a string,  like 'abc', the remaining portion will be 'bc',
> >     then 'c',
> >     than '', but never [] so you 'll never stop.
> >
> >     Try:
> >
> >     if xs == []:
> >         return []
> >     elif xs == '':
> >         return ''
> >     else:
> >         ...
> >
> >
> >     Gary Herron
> >
> >
> >     >
> >     > Thanks,
> >     > Dima
> >
> >
> >
> >
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From kay.schluehr at gmx.net  Sun Oct 14 02:42:32 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Sat, 13 Oct 2007 23:42:32 -0700
Subject: First class lexical closures
In-Reply-To: <13h3c8qgq6gic3b@corp.supernews.com>
References: <13h3c8qgq6gic3b@corp.supernews.com>
Message-ID: <1192344152.368792.83620@q5g2000prf.googlegroups.com>

On Oct 14, 7:54 am, Jon Harrop <j... at ffconsultancy.com> wrote:
> Just debating somewhere else whether or not Python might be considered a
> functional programming language. Lua, Ruby and Perl all seem to provide
> first class lexical closures.
>
> What is the current state of affairs in Python? Last time I looked they were
> just removing (?!) closures...
>
> --
> Dr Jon D Harrop, Flying Frog Consultancyhttp://www.ffconsultancy.com/products/?u

Python has ( ever had ) first class functions. They can be defined
everywhere within each statement and therefore within other function
definitions. They are lexical closures. Pythons support for
*anonymous* closures is somewhat weak. They are not on equal footing
with named functions and they don't play a generative role in the
language ( there is no single piece of language semantics described by
lambda expressions ). There was some willing to remove them in Python
3.0 alltogether. This decision was withdrawn but their power wasn't
extended either.




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct  1 03:08:38 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 09:08:38 +0200
Subject: xml modifications
In-Reply-To: <fdm3fk$nk9$1@news1.carnet.hr>
References: <fdm3fk$nk9$1@news1.carnet.hr>
Message-ID: <47009cf7$0$21616$426a34cc@news.free.fr>

dcleaner a ?crit :
> hi there...i'm a begginer level user and i've stumbbled upon a problem a 
> bit beyond my knowledge. i hope that somebody will be able to help me with 
> my problem...
> 
> the problem is: i'm transforming an Access database to XML

<ot>Strange idea IMHO, but anyway...</ot>

> with some 
> adjustements. basicaly i have one main table in which i have my main data 
> and keys to other tables containing other relevant data.
> after exporting my main table to xml i have in some tags only keys to other 
> tables. and now i want to change those keys to meaningful data.
> for instance: after exporting, i have a line like this: <tagZ>1</tagZ>, and 
> i want to change it to be just an opening tag for something else; <tagQ 
> attr1="xx" attr2="yy">.the data which must be written in attr1 and attr2 
> depends upon the number (in this case number 1) inside  
> the tag (tagZ).

And where's your problem exactly ?-)

More seriously: you don't explain how you export your database to XML, 
so it won't be easy to help.

What I'd personnaly do would be to use the db-api (or whatever 
appropriate for accessing a .mdb) and a templating system (like genshi 
or mako or...) to build the xml file. In which case there's no problem 
accessing the related tables (that's what SQL is for, isn't it ?).

Now if you hope to get some serious help, you probably want to give more 
details...


From abarun22 at gmail.com  Fri Oct 19 10:51:36 2007
From: abarun22 at gmail.com (abarun22 at gmail.com)
Date: Fri, 19 Oct 2007 07:51:36 -0700
Subject: SWIG-PYTHON -> Problem in header file inclusion
Message-ID: <1192805496.596143.276730@q5g2000prf.googlegroups.com>

Hi
I am facing a problem while including a C header file in the SWIG
interface file.  However the problem does not occur when i directly
copy the contents of header file in the same place.

My interface file read as follows.
/*  interface file dep.i  */
%module dep
%{
#include "dep.h"
%}
%inline %{
extern int  ReadDep (char* fname, DONfic* don, int nb2, int nb4);
%}

And my header file consists of the structure DONfic as shown below.
/* Header file dep.h */
typedef struct _DONfic {
        int        nb_dep, nb_inc_dep, ncasec_dep;
        int        max_dep;
} DONfic;

>From python i tried to access the C structure as a python class as
shown below.
/* File pydep.py*/
>> import dep
>>.......
>> d = dep.DONfic()
Gives the following error message

Traceback (most recent call last):
  File "pydep.py", line 5, in ?
    d = dep.DONfic()
AttributeError: 'module' object has no attribute 'DONfic'
The problem is that i cannot get access to the structure if i directly
include the file "dep.h". On the other hand if i copy the contents of
the header file and paste it directly in to the header section of the
SWIG interface file it works.
It works for the following interface file .
%module dep
%{
typedef struct _DONfic {
        int        nb_dep, nb_inc_dep, ncasec_dep;
        int        max_dep;
} DONfic;
%}
%inline %{
extern int  ReadDep (char* fname, DONfic* don, int nb2, int nb4);
%}


I tried out lot of options and does n't seems to work. Any suggestions
or ideas are most welcome.



From python at hope.cz  Fri Oct  5 01:24:53 2007
From: python at hope.cz (Johny)
Date: Thu, 04 Oct 2007 22:24:53 -0700
Subject: Python and SSL
In-Reply-To: <7MgNi.55277$Um6.46091@newssvr12.news.prodigy.net>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
	<1191420037.564584.103300@50g2000hsm.googlegroups.com>
	<877im4xd0f.fsf@pobox.com>
	<1191523844.528308.98180@y42g2000hsy.googlegroups.com>
	<7MgNi.55277$Um6.46091@newssvr12.news.prodigy.net>
Message-ID: <1191561893.705508.151520@n39g2000hsh.googlegroups.com>

On Oct 5, 3:50 am, John Nagle <na... at animats.com> wrote:
> Johny wrote:
> > Martin and John,
> > Thank you both for your replies
> >  Must I  have OpenSSL imported in my Python program?
> > So far I have been using only SSL  support.
> > Built-in SSL support works OK if I connect from my Python program
> > directly to SSL server ( but not via proxy).
> > L.
>
>      SSL isn't SUPPOSED to work through proxies.  That's the whole point of
> SSL - to prevent somebody in the middle from tapping into the connection.
> Look up "man in the middle attack".
>
>                                      
John,
SSL may not be SUPPOSED to work through proxies but it CAN work.
JAVA is  an example. But I would like to use  Python instead of Java.
And because I have not been  able to make it  I asked here about
OpenSSL.
Regards,
L.



From fw3 at hotmail.co.jp  Mon Oct  1 13:41:58 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Mon, 1 Oct 2007 17:41:58 +0000
Subject: how to install numpy and scipy on debian?
In-Reply-To: <1191259303.3393.49.camel@dot.uniqsys.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
	<mailman.1337.1191248052.2658.python-list@python.org>
	<47010e97$0$7777$426a74cc@news.free.fr>
	<1191258548.820547.123560@k79g2000hse.googlegroups.com>
	<1191258828.206660.21570@22g2000hsm.googlegroups.com> 
	<1191259303.3393.49.camel@dot.uniqsys.com>
Message-ID: <BLU107-W11411910BF255931124BE2B4AD0@phx.gbl>


Hi,
 
I need to help to install these two packages on debian. I want to know what packages do I need to? I have installed fftw3,fftww2, sfftw2, atlas. Did I miss anything? In what way I can install an optimized numpy and scipy, since my project is very big and speed is important.
 
Thanks
 
Frank
_________________________________________________________________
?????????????????IE7?MSN???????????????
http://promotion.msn.co.jp/ie7/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071001/9e95004f/attachment.html>

From barronmo at gmail.com  Tue Oct 30 14:03:02 2007
From: barronmo at gmail.com (barronmo)
Date: Tue, 30 Oct 2007 18:03:02 -0000
Subject: choose from a list
Message-ID: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>

I'm new to programming and even newer to Python and would be grateful
for some help on what has been a tough problem for me.  The project I
am working on is an electronic medical record using MySQL/Python.  I'm
currrently working on a module that looks up a patient's name based on
input from the user.

My goal is a lookup based on the first 2 or 3 letters of the patient's
last name.  The matching results would appear as numbered choices so
that the user would choose only a number to then access various parts
of the patient's record.  The results might look like this for user
input "smi":

1  387  John Smith
2  453  Jane Smith
3  975  Joe Smithton

Here is a copy of what I have so far, name_lookup.py:


import MySQLdb

def name_find(namefrag):

     conn = MySQLdb.connect(host = "localhost",
          user = "root",
          passwd = "n85",
          db = "meds")
     cursor = conn.cursor(MySQLdb.cursors.DictCursor)
     cursor.execute("SELECT patient_ID, firstname, lastname FROM
demographics WHERE lastname LIKE '"+ str(namefrag)+"%'")
     results = cursor.fetchall()
     for row in results:
          print "%s   %s %s  %s" % (row["patient_ID"],
row["firstname"], row["lastname"])

     cursor.close()
     conn.close()


Thanks in advance for any help.

Mike



From Scott.Daniels at Acm.Org  Wed Oct 24 09:28:43 2007
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 24 Oct 2007 06:28:43 -0700
Subject: transforming list
In-Reply-To: <1193206067.646561.198210@v29g2000prd.googlegroups.com>
References: <1193193972.224549.221450@k35g2000prh.googlegroups.com>
	<1193206067.646561.198210@v29g2000prd.googlegroups.com>
Message-ID: <13huhvv23u0ka33@corp.supernews.com>

sandipm wrote:
> hi james,
>   this is one implementation using python dictionaries.
> 
> report ={}
> for row in data:
>     if not row[0] in report:
I'd use:
       if row[0] not in report:
>         report[row[0]] = [row[0], row[1], 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0]
>     if row[2]:
>         report[row[0]][row[2]+1] = row[3]
> reports = report.values()

or even:
     report ={}
     for code, team, game, bet in data:
         if code not in report:
             report[code] = [code, team, 0, 0, 0, 0,
                                    0, 0, 0, 0, 0, 0, 0, 0]
         else:
             assert report[code][1] == team
         if game:
             report[code][game + 1] = bet
     reports = report.values()


-Scott David Daniels
Scott.Daniels at Acm.Org


From sjmachin at lexicon.net  Sun Oct 14 17:38:17 2007
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 14 Oct 2007 14:38:17 -0700
Subject: int to str in list elements..
In-Reply-To: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
References: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
Message-ID: <1192397897.822099.286260@v29g2000prd.googlegroups.com>

On Oct 15, 4:02 am, Abandoned <best... at gmail.com> wrote:
> Hi..
> I have a list as a=[1, 2, 3 .... ] (4 million elements)
> and
> b=",".join(a)
> than
> TypeError: sequence item 0: expected string, int found
> I want to change list to  a=['1','2','3'] but i don't want to use FOR
> because my list very very big.

What is your worry: memory or time? The result string will be very
very very big. What will you do with the result string -- write it to
a file? If so, look at the cPickle module.



From artur.siekielski at gmail.com  Thu Oct 11 07:48:18 2007
From: artur.siekielski at gmail.com (Artur Siekielski)
Date: Thu, 11 Oct 2007 11:48:18 -0000
Subject: Declarative properties
Message-ID: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>

Hi.

I would like to have declarative properties in Python, ie. something
like slots definitions in defclass in Common Lisp. It seems that even
Java will have it, using a library ( https://bean-properties.dev.java.net/
).

I know about 'property' function in Python, but it's normal usage
isn't declarative, because I have to code imperatively getters and
setters:

class Person(object):
   def __init__(self, name):
      self._name = name
   def _get_name(self):
      return self._name
   def _set_name(self, new_name):
      self._name = new_name
   name = property(_get_name, _set_name)

I would like to have something like that:

class Person(object):
   name = property('_name')

I assume that this causes "generation" of instance field '_name' and
default getters and setters. And if I would like to customize (g|
s)etters, I would write them by hand, or, better, use more declarative
approach (like @NotNull annotations in Java version).

I could probably code a solution to my problem with help of wonderful
introspection functionalities. But I'm looking for a standard and/or
proven way of doing this. Maybe some PEP is being prepared for this?

Regards,
Artur



From williampaul28 at yahoo.com  Tue Oct 30 02:36:57 2007
From: williampaul28 at yahoo.com (william paul)
Date: Mon, 29 Oct 2007 23:36:57 -0700 (PDT)
Subject: parse text file
Message-ID: <868256.95660.qm@web38415.mail.mud.yahoo.com>

Hi:

I am new to this list and new to Python. I have a text file that looks like:
<values> 4 50
<values> 3 900
<values] 7 400
...
<values} 9 70

I want to be able to remove from each line everything up to ">" or "]" sign. For example:
4 50
3 900
 7 400

...
9 70

How can I do this?

Thank you

William



__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/94abf81f/attachment.html>

From jroughface1157 at sbcglobal.net  Thu Oct 11 03:56:45 2007
From: jroughface1157 at sbcglobal.net (jbean)
Date: Thu, 11 Oct 2007 07:56:45 -0000
Subject: Watch TV stations from around the World
Message-ID: <1192089405.242620.261420@k79g2000hse.googlegroups.com>

Even watch the War in Iraq live and uncensored from your PC or Laptop
for FREE after a small onetime installment fee.  1,000's more
stations.  http://jblog.ipodpsp.hop.clickbank.net



From grante at visi.com  Wed Oct 10 15:10:52 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 10 Oct 2007 19:10:52 -0000
Subject: why did MIT drop scheme for python in intro to computing?
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
	<13glvegpugvbb19@corp.supernews.com>
	<oYudnUbc952Ea5HanZ2dnUVZ_uCinZ2d@comcast.com>
Message-ID: <13gq8tskrmtqe20@corp.supernews.com>

On 2007-10-10, Ashish Hanwadikar <ahanwadi at comcast.net> wrote:

>> However, Tk has been largely abandoned in favor of a native
>> GTK+ binding
>>
>>  http://www.stklos.org/
>
> I couldn't find any documentation on stklos (other than a few
> examples) regarding its gtk+ binding. Could you please point
> me to appropriate link?

I don't know of any other documentation for stklos/gtk.  You
could ask on the stklos mailing list.

FWIW, here are some other Scheme implimentations with GTK
bindings:

 http://www.gnu.org/software/guile-gtk/
 http://www-sop.inria.fr/mimosa/fp/Bigloo/
 http://practical-scheme.net/gauche/

There may be more, bot those are what Google found me in a
couple minutes time. 

-- 
Grant Edwards                   grante             Yow! I've got an IDEA!!
                                  at               Why don't I STARE at you
                               visi.com            so HARD, you forget your
                                                   SOCIAL SECURITY NUMBER!!


From http  Wed Oct 31 21:21:56 2007
From: http (Paul Rubin)
Date: 31 Oct 2007 18:21:56 -0700
Subject: 3 number and dot..
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <7xr6jakbez.fsf@ruckus.brouhaha.com>

Abandoned <besturk at gmail.com> writes:
> 12332321 ==> 12.332.321

Untested:

def convert(n):
   assert type(n) in (int,long)
   if n < 0: return '-%s'% convert(-n)
   if n < 1000: return str(n)
   return '%s.%03d' % (convert(n//1000), n % 1000)


From anthony at muzz.co.uk  Wed Oct 17 08:29:09 2007
From: anthony at muzz.co.uk (Anthony Perkins)
Date: Wed, 17 Oct 2007 13:29:09 +0100
Subject: Best Python Linux distribution
Message-ID: <47160015.3070404@muzz.co.uk>

Hi everyone,

What is the best GNU/Linux distribution (or the most preferred) for 
developing Python applications?  Ideally I would like one with both 
Python *and* IDLE included on the install media (neither Ubuntu nor SUSE 
have IDLE on the CDs), so that I can use it on machines without a 
network connection.

Thanks,

-Anthony

-- 
Anthony Perkins
muzz.be


From cadet.bramble at gmail.com  Mon Oct  1 22:54:10 2007
From: cadet.bramble at gmail.com (bramble)
Date: Tue, 02 Oct 2007 02:54:10 -0000
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <7xr6kez5aa.fsf@ruckus.brouhaha.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<7xr6kez5aa.fsf@ruckus.brouhaha.com>
Message-ID: <1191293650.355504.312590@n39g2000hsh.googlegroups.com>

On Oct 1, 9:14 pm, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
> bramble <cadet.bram... at gmail.com> writes:
> > Maybe a better question is, how has Tk managed to keep beating up the
> > newer, more modern, more featureful, better documented toolkits
> > encroaching on his territory? What's Tk's secret weapon?
>
> First-mover advantage.

I don't know... As I meant to imply above, it's looking like Tkinter
will be playing its expected role in Py3k as the GUI toolkit of
choice. And from what I've seen of the Py3k effort, there's been
really excellent work on pulling out stuff that should be pulled out.
So, if it was *really* simply only first-mover advantage keeping it
there, I'd expect to see talk of removing it from the standard
library.

BTW, pulling Tkinter and related GUI stuff out of Py3k's standard
library wouldn't harm existing Tkinter users -- it would merely
require them to actually install it if they want it.

Maybe the key I'm missing is this: maybe GvR and company think that a
language absolutely should come off-the-shelf with GUI toolkit
bindings. So, given that, they feel they've gotta pick just one, and
they've already got Tkinter and it works, so that's that. Is that it?



From kyosohma at gmail.com  Mon Oct  8 10:48:47 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 08 Oct 2007 14:48:47 -0000
Subject: How to create a file on users XP desktop
In-Reply-To: <1191853183.871616.227350@k79g2000hse.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
	<4708CAF4.7020206@bigfoot.com> <47090D86.5080805@tim.thechases.com>
	<mailman.1648.1191778298.2658.python-list@python.org>
	<1191853183.871616.227350@k79g2000hse.googlegroups.com>
Message-ID: <1191854927.113225.67880@o80g2000hse.googlegroups.com>

On Oct 8, 9:19 am, goldtech <goldt... at worldpost.com> wrote:
> > from win32com.shell import shell, shellcon
>
> > desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
>
> > </code>
>
> Tim,
>
> How did you learn Win32com?
>
> Other than the O'Reilly book, I've never found a lot of
> documentation.
>
> Trying to browse COM in PythonWin is tough - there's tons of stuff in
> there. I've never been able to find the Win32com classes, methods,
> usage examples when I browse COM in PythonWin.
>
> For example where is, shell.SHGetFolderPath and shellcon.CSIDL_DESKTOP
> officially documented?
>
> Did you learn from using Visual C++ or VB? How did you learn this
> stuff?
>
> Thanks,
> Lee G.

Pretty much the only place to learn stuff that's not in the PyWin32
docs is on one of the MSDN sites. Yes, that can suck. Here's the
general page: http://msdn2.microsoft.com/en-us/default.aspx

You can google for them too to get direct links to the MSDN page.

The ActiveState Python (AKA ActivePython) has an IDE that allows you
to browse the COM module. It also has a help file that allows you to
browse the PyWin32 docs locally. I think you can download that without
downloading ActivePython.

Mike



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Oct  2 03:47:33 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 02 Oct 2007 09:47:33 +0200
Subject: Question about quoting style.
In-Reply-To: <mailman.1374.1191284721.2658.python-list@python.org>
References: <mailman.1366.1191268378.2658.python-list@python.org>	<470153d9$0$27239$426a74cc@news.free.fr>
	<mailman.1374.1191284721.2658.python-list@python.org>
Message-ID: <4701f78f$0$14269$426a74cc@news.free.fr>

J. Cliff Dyer a ?crit :
(snip)
> You missed another dimension of python string types.

I didn't "missed" -  I choosed to skip the subject since it was not 
about quoting style. Not to say I necessarily made the best choice...



From deets at nospam.web.de  Thu Oct 25 17:47:44 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 25 Oct 2007 23:47:44 +0200
Subject: Dual Python Installed Environments..
In-Reply-To: <mailman.462.1193348012.13605.python-list@python.org>
References: <mailman.462.1193348012.13605.python-list@python.org>
Message-ID: <5och8gFm7ku1U3@mid.uni-berlin.de>

sam schrieb:
> Hi..
> 
> I'm looking to install dual versions of python 2.3, 2.4 on the same box. I'm
> trying to figure out if there's something I'm missing, some kind of gotchas
> that I haven't seen.

THey shouldn't affect each other.

> I'm also trying to figure out how to allow my script to determine which
> version to use???

under unix - simple as this:

#!/usr/bin/env python<version>

Under Windows... well, I don't use that.

Diez


From deets at nospam.web.de  Fri Oct 26 08:53:59 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 26 Oct 2007 14:53:59 +0200
Subject: "Standard" Full Text Search Engine
References: <mailman.475.1193402986.13605.python-list@python.org>
Message-ID: <5oe6b7FmabnbU1@mid.uni-berlin.de>

Martin Marcher wrote:

> Hello,
> 
> is there something like a standard full text search engine?
> 
> I'm thinking of the equivalent for python like lucene is for java or
> ferret for rails. Preferrably something that isn't exactly a clone of
> one of those but more that is python friendly in terms of the API it
> provides.
> 
> Things I'd like to have:
> 
>  * different languages are supported (it seems most FTSs do only english)
>  * I'd like to be able to provide an identifier (if I index files in
> the filesystem that would be the filename, or an ID if it lives in a
> database, or whatever applies)
>  * I'd like to pass it just some (user defined) keywords with content,
> the actual content (as string, or list of strings or whatever) and to
> retrieve the results by search by keyword
>  * something like a priority should be assignable to different fields
> (like field: title(priority=10, content="My Draft"),
> keywords(priority=50, list_of_keywords))
> 
> Unnecessary:
> 
>  * built-in parsing of different files
> 
> The "standard" I'm referring to would be something with a large and
> active user base. Like... WSGI is _the_ thing to refer to when doing
> webapps it should be something like $FTS-Engine is _the_ engine to
> refer to.
> 
> any hints?

There are several python lucene implementations available, and recently here
a project called NUCULAR turned up. And there is ZCatalog, the
full-text-indexing technology used in Zope, but which should be usable
outside of zope.

But "the" search-technology doesn't exist. I personally would most probably
go for the lucene-based stuff, because there you possibly get auxiliary
tools written in java.

Diez


From rsachetto at gmail.com  Wed Oct 10 09:12:47 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Wed, 10 Oct 2007 10:12:47 -0300
Subject: cannot create python packages
In-Reply-To: <149708.52530.qm@web25501.mail.ukl.yahoo.com>
References: <149708.52530.qm@web25501.mail.ukl.yahoo.com>
Message-ID: <250fcec00710100612i3d8f3f71ob9ed57edc3f48f54@mail.gmail.com>

Try to put a empty file named __init__.py on current_dir/level1/On 10/10/07,
Konstantinos Pachopoulos <kostaspaxos at yahoo.gr> wrote:
>
> Hi,
> i have the following files:
> current_dir/level1/Called.py
> current_dir/Caller.py
>
>
> Called.py:
> -----------
> class Called:
>    def exec1(self):
>      print "Hello"
>
>
> Caller.py:
> ----------
> from level1.Called import *
>
> c=Called()
> c.exec1()
>
> However it is impossible for Caller.py to find
> Called.py. I even tried to place the level1 structure
> inside /usr/lib/pythonX.Y/, whithout success however.
> Any ideas?
>
> Thnx
>
>
>       ___________________________________________________________
> Want ideas for reducing your carbon footprint? Visit Yahoo! For Good
> http://uk.promotions.yahoo.com/forgood/environment.html
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/ee7f704a/attachment.html>

From mensanator at aol.com  Mon Oct 22 19:20:29 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 16:20:29 -0700
Subject: Iteration for Factorials
In-Reply-To: <mailman.349.1193092818.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193080349.610343.95430@v23g2000prn.googlegroups.com>
	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>
	<mailman.344.1193084287.13605.python-list@python.org>
	<1193089836.219692.117420@q5g2000prf.googlegroups.com>
	<mailman.349.1193092818.13605.python-list@python.org>
Message-ID: <1193095229.784364.94700@i13g2000prf.googlegroups.com>

On Oct 22, 5:39 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> >> If obscurity is the name of the game,
>
> >>    >>> from operator import mul
> >>    >>> fact = lambda i: i > 1 and reduce(mul, xrange(1,i+1)) or i
> >>  >= 0 and 1 or None
> >>    >>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i))
>
> >> My eyes hurt after reading that...as the order of operations is
> >> left to Python to discern (a few judiciously placed parens might
> >> improve things...though that may be like polishing coprolite)
>
> > Indeed. Particularly since it doesn't work:
>
> Huh?  Works on the Python (2.4) I have, both the Win32 python at
> work and Linux Python at home:

Sorry about that, Google line wrapped the fact definition
and it worked anyway in Idle (but not as written).

Still, why do you want None instead of raisng an exception
(as is the case in other factorial implementations)?

>
> >>> from operator import mul
> >>> fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or i
> >= 0 and 1 or None
> >>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i))
>
> ...
> -2! = None
> -1! = None
> 0! = 1
> 1! = 1
> 2! = 2
> 3! = 6
> 4! = 24
> 5! = 120
> 6! = 720
> 7! = 5040
> 8! = 40320
> 9! = 362880
>
> It could even be more obscure by making it
>
> >>> fact = lambda i: i > 1 and reduce(mul, xrange(1, i+1)) or not
>
> i and 1 or None
>
> Stunts like this would get a person fired around here if they
> were found in production code :)
>
> -tkc




From girodt at gmail.com  Tue Oct 16 07:38:19 2007
From: girodt at gmail.com (TG)
Date: Tue, 16 Oct 2007 04:38:19 -0700
Subject: numpy : efficient sum computations
In-Reply-To: <1192524629.077906.76280@t8g2000prg.googlegroups.com>
References: <1192524629.077906.76280@t8g2000prg.googlegroups.com>
Message-ID: <1192534699.057729.262390@v23g2000prn.googlegroups.com>

Okay, another one which I don't have answer for.

it is the reverse case, sort of :

> phi.shape (x,y)
> d.shape (a,b)

I want to return m :
> m.shape = (x,y,a,b)
with
m[x,y] = d * phi[x,y]

currently, my code is :
> m = empty(phi.shape + d.shape)
> m[:,:] = d

this repeats the matrix d x*y times, which is what I want. But now, if
I do :
> m[:,:] = d * phi[:,:]
in order to multiply each "d" by a specific value of "phi", it doesn't
work.

<type 'exceptions.ValueError'>: shape mismatch: objects cannot be
broadcast to a single shape

Right now I'm stuck here. If anyone can help, I would be glad.



From deets at nospam.web.de  Mon Oct  8 10:24:00 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 16:24:00 +0200
Subject: Variable scoping rules in Python?
References: <1191853056.970304.209350@k79g2000hse.googlegroups.com>
Message-ID: <5muss0Ff82ngU1@mid.uni-berlin.de>

 joshua.davies at travelocity.com wrote:

> Ok, I'm relatively new to Python (coming from C, C++ and Java).  I'm
> working on a program that outputs text that may be arbitrarily long,
> but should still line up, so I want to split the output on a specific
> column boundary.  Since I might want to change the length of a column,
> I tried defining the column as a constant (what I would have made a
> "#define" in C, or a "static final" in Java).  I defined this at the
> top level (not within a def), and I reference it inside a function.
> Like this:
> 
> COLUMNS = 80
> 
> def doSomethindAndOutputIt( ):
>   ...
>   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
>     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     ..
> 
> etc. etc.  It works fine, and splits the output on the 80-column
> boundary just like I want.
> 
> Well, I decided that I wanted "COLUMNS = 0" to be a special "don't
> split anywhere" value, so I changed it to look like this:
> 
> COLUMNS = 80
> 
> def doSomethindAndOutputIt( ):
>   ...
>   if COLUMNS == 0:
>     COLUMNS = len( output[ 0 ] )
> 
>   for i in range( 0, ( len( output[0] ) / COLUMNS ) ):
>     print output[0][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     print output[1][ i * COLUMNS : i * COLUMNS + ( COLUMNS - 1 ) ]
>     ..
> 
> Now, when I run it, I get the following error:
> 
> Traceback (most recent call last):
>   File "Test.py", line 140, in ?
>     doSomethingAndOutput( input )
>   File "Test.py", line 123, in doSomethingAndOutput
>     if COLUMNS == 0:
> UnboundLocalError: local variable 'COLUMNS' referenced before
> assignment
> 
> I went back and re-read chapter 13 of "Learning Python", which talks
> about variable scoping rules, and I can't figure out why Python is
> saying this variable in Unbound.  It works if I insert:
> 
>   global COLUMNS
> 
> before the "if" statement... but I don't understand why.  Is the
> interpreter scanning my entire function definition before executing
> it, recognizing that I *might* assign COLUMNS to a value, and deciding
> that it's a local on that basis?

Yep. That's essentially it. Because python has no explicit variable
declaration, it looks on the left hand side of assignments to determine the
locals. 

Diez


From hat at se-162.se.wtb.tue.nl  Thu Oct 25 09:12:01 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Thu, 25 Oct 2007 15:12:01 +0200
Subject: local variable referenced before assignment
References: <47205ba1$0$515$5a6aecb4@news.aaisp.net.uk>
	<slrnfi0nmp.qgc.hat@se-162.se.wtb.tue.nl>
	<mailman.447.1193317281.13605.python-list@python.org>
Message-ID: <slrnfi15h1.qkc.hat@se-162.se.wtb.tue.nl>

On 2007-10-25, Tim Williams <tdwdotnet at gmail.com> wrote:
> On 25/10/2007, A.T.Hofkamp <hat at se-162.se.wtb.tue.nl> wrote:
>> On 2007-10-25, Pete Bartonly <none at try.invalid> wrote:
>> >
>> Also, brackets around conditions (in the if) are not needed, and comparing
>> against None is usually done with 'is' or 'is not' instead of '==' or '!='.
>> The result is then
>>
>> if logMsg is not None:
>
> Or just
>
>>>>  if logMsg:
>             do_something()
>
>:)

That is not the same.

If logMsg is 0, False, or empty string, the second variant
would be False and not True.

Albert


From walterbyrd at iname.com  Thu Oct 11 14:03:26 2007
From: walterbyrd at iname.com (walterbyrd)
Date: Thu, 11 Oct 2007 11:03:26 -0700
Subject: Is hostmonster any good for hosting python?
In-Reply-To: <mailman.75.1192105146.927.python-list@python.org>
References: <1192037226.271956.262390@o80g2000hse.googlegroups.com>
	<1192103847.465144.44670@r29g2000hsg.googlegroups.com>
	<mailman.75.1192105146.927.python-list@python.org>
Message-ID: <1192125806.935747.170060@o80g2000hse.googlegroups.com>

I should have mentioned, I am thinking about using a python framework,
either django, turbogears, or pylons.

I think these frameworks require a newer version of python, maybe 2.4.
Also, I think some of them require a newer version of Apache - 2.0 or
better. I also think these python frameworks all work with fastcgi,
which - I think - is possible with hostmonster. Although fastcgi is
acceptable, it is generally not the preferred solution.

I do not think you will get reasonable performance with CGI, even if
factcgi/mod_python/wsgi are not officially required.

Also, I doubt you will find mod_python on any "standard" shared
hosting. To get mod_python you will need 1) a host that speciallizes
in python - like webfaction. 2) a virtual host 3) something like
hcoop.net, which may be sort-of like a virtual host. BTW: hccoop.net
has a long-running freeze on new memberships.

Please correct me if I'm wrong about any of this.



From adam at krusty.madoff.com  Wed Oct  3 15:38:34 2007
From: adam at krusty.madoff.com (Adam Lanier)
Date: Wed, 03 Oct 2007 15:38:34 -0400
Subject: Class design question
In-Reply-To: <1191437225.918592.193010@o80g2000hse.googlegroups.com>
References: <mailman.1470.1191434194.2658.python-list@python.org>
	<1191436021.775375.324010@r29g2000hsg.googlegroups.com>
	<1191437225.918592.193010@o80g2000hse.googlegroups.com>
Message-ID: <1191440314.19400.32.camel@skinner.madoff.com>

On Wed, 2007-10-03 at 18:47 +0000, George Sakkis wrote:
> >
> > I would use variable argument list for this; it's also consistent
with
> > your example Foo( 'baz', Bar( 'something else' )), otherwise you
need
> > to call it as Foo([ 'baz', Bar( 'something else' ) ])

Good point, this is what was tripping me up...

> >
> > # always inherit from object unless you have a good reason not to
> > class Foo(object):
> >
> >     # XXX this is a class instance, shared by all Foo instances;
> >     # XXX probably not what you intended
> >     params = [ ]
> >
> >     def __init__(self, *args):
> >         # uncomment the following line for instance-specific params
> >         # self.params = []
> >         for arg in args:
> >             if not isinstance(arg, Bar):
> >                # let the Bar constructor to do typechecking or
whatnot

This is also tangentially what I was asking, Should type-checking be
done in the caller or the callee (so to speak).  I guess good OOP
practice would be to push it down the call stack.

> >                 arg = Bar(arg)
> >             self.params.add(arg)
> >
> 
> Or even better (Python 2.5):
> 
> class Foo(object):
>     def __init__(self, *args):
>         self.params = [arg if isinstance(arg, Bar) else Bar(arg) for
> arg in args]
> 

Interesting, I'm not familiar with this idiom...




From sjmachin at lexicon.net  Fri Oct 12 09:19:18 2007
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 12 Oct 2007 06:19:18 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <1192169278.464170.214930@e34g2000pro.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
Message-ID: <1192195158.203063.143920@e9g2000prf.googlegroups.com>

On Oct 12, 4:07 pm, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 11, 11:50 pm, John Nagle <na... at animats.com> wrote:
>
>
>
> >     If anyone has a first-rate address parser in Python that will cover
> > most of the developed world, I'd like to talk to them.
>
> >                                 John Nagle
> >                                 SiteTruth
>
> The pyparsing examples page includes a street address parser (http://
> pyparsing.wikispaces.com/space/showimage/streetAddressParser.py) that
> will handle these test cases:
>
>     100 South Street
>     123 Main
>     221B Baker Street
>     10 Downing St
>     1600 Pennsylvania Ave
>     33 1/2 W 42nd St.
>     454 N 38 1/2
>     21A Deer Run Drive
>     256K Memory Lane
>     12-1/2 Lincoln
>     23N W Loop South
>     23 N W Loop South
>     25 Main St
>     2500 14th St
>     12 Bennet Pkwy
>     Pearl St
>     Bennet Rd and Main St
>     19th St
>
> -- Paul

"... most of the developed world" was the [very optimistic] request.
How does it go with "JAPAN 112-0001 TOKYO Bunkyo-Ku Hakusan 4-Chome 3-
2" and will it give the same result for "4-3-2 HAKUSAN BUNKYO-KU TOKYO
112-00001 JAPAN"? OK, a little exotic ... closer to "home", what about
addresses in Quebec? People often write addresses in formats that you
won't find on the postal service website, but the local postal workers
will still deliver. Rural addresses can be quaintly medieval e.g. "Lot
123, Hundred of Foughbarre" [South Australia]. Etc etc ...



From brian at rkspeed-rugby.dk  Sun Oct  7 16:06:59 2007
From: brian at rkspeed-rugby.dk (Brian Elmegaard)
Date: Sun, 07 Oct 2007 19:06:59 -0100
Subject: Problem of Readability of Python
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<470924c8$0$15774$426a34cc@news.free.fr>
Message-ID: <u4ph26658.fsf@rkspeed-rugby.dk>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
writes:

> Use dicts, not lists or tuples:
>
> a = dict(name='yadda', val=42)
> print a['name']
> print a['val']

I guess you will then need a list or tuple to store the dicts?

I might have made it with a list of class instances:

class a:
    def __init__(self,name,val):
        self.name=name
        self.val=val

l=list()
l.append(a('yadda',42))
print l[0].name
print l[0].val
      
Is the dict preferable to a list or tuple of class instances?
-- 
Brian (remove the sport for mail)
http://www.et.web.mek.dtu.dk/Staff/be/be.html
http://www.rugbyklubben-speed.dk


From robert.rawlins at thinkbluemedia.co.uk  Fri Oct 12 10:22:24 2007
From: robert.rawlins at thinkbluemedia.co.uk (Robert Rawlins - Think Blue)
Date: Fri, 12 Oct 2007 15:22:24 +0100
Subject: Subprocess Running Slowly
Message-ID: <005301c80cdb$4f9ed6c0$eedc8440$@rawlins@thinkbluemedia.co.uk>

Hello Guys,

 

I'm looking for a little advice on spawning a sub process to run a command
line application for transferring a file over Bluetooth. Now the spawned
process runs from start to finish exactly as I would expect it too, however
its very slow. 

 

Now the main reason this is so odd, is that If I have my python application
running as usual, and I start the command line application manually myself
from the command line, then it'll transfer the file to my phone about 3 or 4
times faster than when the app is launch using sub process. Take a look
below for a quick snippet example of my process launch code.

 

send = 'ussp-push --debug --dev hci%s %s@%s /pblue/new/Media/%s %s' % (

adapter, 

mac, 

result, 

media[3], 

media[0]

)

process = subprocess.Popen(

send, 

shell=True, 

stdout=subprocess.PIPE, stderr=subprocess.PIPE).stderr

 

Do you have any ideas what might be causing this slow behaviour? Do spawned
sub processes generally run at a much slower rate than expected? Or is this
something specific to my application?

 

I'd love to work this out as when transferring larger files this becomes a
real pain, especial when I know there is no real physical reason for it
running so slowly.

 

Thanks guys for any help you can offer.

 

Rob

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071012/88a1d5df/attachment.html>

From paul.hankin at gmail.com  Wed Oct 17 17:32:29 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 21:32:29 -0000
Subject: Pull Last 3 Months
In-Reply-To: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
Message-ID: <1192656749.595666.90290@v23g2000prn.googlegroups.com>

On Oct 17, 9:59 pm, Harlin Seritt <harlinser... at yahoo.com> wrote:
> Is there a module that can pull str values for say the last 3 months?
> Something like:
>
> print lastMonths(3)
>
> ['Sep', 'Aug', 'Jul']

You should take a look at the 'datetime' module.

You can get the current month:
datetime.datetime.now().month

And a list of all abbreviated month names:
[datetime.datetime(1900, i + 1, 1).strftime('%b') for i in range(12)]

>From there, it shouldn't be too tricky to construct the list of months
you want.

--
Paul Hankin



From will at willNOmcguganSPAM.com  Mon Oct 15 06:23:33 2007
From: will at willNOmcguganSPAM.com (Will McGugan)
Date: Mon, 15 Oct 2007 11:23:33 +0100
Subject: Simple HTML template engine?
In-Reply-To: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
Message-ID: <47133FA5.7090600@willNOmcguganSPAM.com>

allen.fowler wrote:
> Hello,
> 
> Can anyone recommend a simple python template engine for generating
> HTML that relies only on the Pyhon Core modules?
>
Mako (http://www.makotemplates.org/) sounds like what you want..

Will McGugan
http://www.willmcgugan.com


From nick at craig-wood.com  Fri Oct  5 06:30:12 2007
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Fri, 05 Oct 2007 05:30:12 -0500
Subject: Cross platform way of finding number of processors on a machine?
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
	<mailman.1553.1191556969.2658.python-list@python.org>
Message-ID: <slrnfgc386.aff.nick@irishsea.home.craig-wood.com>

Nicholas Bastin <nick.bastin at gmail.com> wrote:
>  On 10/4/07, John <weekender_ny at yahoo.com> wrote:
> >
> > Is there a way to find the number of processors on a machine (on linux/
> > windows/macos/cygwin) using python code (using the same code/cross
> > platform code)?
> 
>  There's no single call that will give you the same info on every
>  platform, but you can obviously write this yourself and switch based
>  on os.uname()[0] in most cases.
> 
>  For Darwin, you can just use the subprocess module to call 'sysctl
>  hw.logicalcpu'.  I'm not sure if there's a more direct way in python
>  to use sysctl.  (hw.logicalcpu_max is what the hardware maximally
>  supports, but someone may have started their machine with OF blocking
>  some of the processors and you should probably respect that decision)
> 
>  For Linux you can read /proc/cpuinfo and parse that information.  Be
>  somewhat careful with this, however, if your processors support HT,
>  they will show as 2, and that may or may not be what you want.  You
>  can deterministically parse this information out if you know which
>  processor families are truly multi-core, and which are HT.

On any unix/posix system (OSX and linux should both qualify) you can use

  >>> import os
  >>> os.sysconf('SC_NPROCESSORS_ONLN')
  2
  >>>

(From my Core 2 Duo laptop running linux)

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From hniksic at xemacs.org  Wed Oct 31 17:48:21 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 31 Oct 2007 22:48:21 +0100
Subject: 3 number and dot..
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <87tzo7hs62.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
>
> How can i do?

I'm surprised that no one has proposed a regex solution, such as:

>>> import re
>>> re.sub(r'\d{1,3}(?=(?:\d{3})+$)', r'\g<0>.', str(1234567))
'1.234.567'


From duncan.booth at invalid.invalid  Wed Oct 17 05:08:27 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 17 Oct 2007 09:08:27 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
Message-ID: <Xns99CC6729BAC69duncanbooth@127.0.0.1>

paul.melis at gmail.com wrote:

> Curious, do you have the relevant section in the docs that describes
> this behaviour?
 
Yes, but mostly by implication. In section 3.4.7 of the docs, the sentence 
before the one you quoted says:

  These methods should attempt to do the operation in-place (modifying
  self) and return the result (which could be, but does not have to be,
  self). 

The 'does not have to be self' tells you that the result of __iadd__ is 
used, i.e there is still an assignment going on.

Just read all of that paragraph carefully. It says that if there is no 
__iadd__ method it considers calling __add__/__radd__. Nowhere does it say 
that it handles the result of calling the methods differently.


From ldo at geek-central.gen.new_zealand  Thu Oct  4 03:34:49 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 20:34:49 +1300
Subject: s.split() on multiple separators
References: <1191160394.870241.171200@w3g2000hsg.googlegroups.com>
	<bkRLi.1723$hI7.1162@newssvr17.news.prodigy.net>
	<1191179790.181227.323480@k79g2000hse.googlegroups.com>
	<mailman.1325.1191209706.2658.python-list@python.org>
	<slrnfg3tl0.fm5.apardon@rcpc42.vub.ac.be>
Message-ID: <fe2536$v42$1@lust.ihug.co.nz>

In message <slrnfg3tl0.fm5.apardon at rcpc42.vub.ac.be>, Antoon Pardon wrote:

> On 2007-10-01, Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote:
>
>> En Sun, 30 Sep 2007 16:16:30 -0300, <mrkafk at gmail.com> escribi?:
>>
>>>> From my POV, if I want sequence from here to there, it should include
>>> both here and there.
>>>
>>> I do understand the consequences of making high bound exclusive, which
>>> is more elegant code: xrange(len(c)). But it does seem a bit
>>> illogical...
>>
>> See this note from E.W.Dijkstra in 1982 where he says that the Python
>> convention is the best choice.
>> http://www.cs.utexas.edu/users/EWD/transcriptions/EWD08xx/EWD831.html
> 
> It may be convincing if you only consider natural numbers in ascending
> order. Suppose you have the sequence a .. b and you want the reverse.
> If you work with included bounds the reverse is just b .. a. If you use
> the python convention, things become more complicated.

Nothing complicated about it:

    >>> a = 1
    >>> b = 5
    >>> range(a, b)
    [1, 2, 3, 4]
    >>> range(b - 1, a - 1, -1)
    [4, 3, 2, 1]

> Another problem is if you are working with floats. Suppose you have a
> set of floats. Now you want the subset of numbers that are between a and
> b included. If you want to follow the convention that means you have to
> find the smallest float that is bigger than b, not a trivial task.

Due to precision limitations, the set will probably not be what you think it
is, anyway.


From matthieu.brucher at gmail.com  Tue Oct 16 01:35:20 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Tue, 16 Oct 2007 07:35:20 +0200
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <4713DAB4.3020904@ulmcnett.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>
	<4713D47B.2070600@ulmcnett.com>
	<e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>
	<4713DAB4.3020904@ulmcnett.com>
Message-ID: <e76aa17f0710152235j305aeccka6ec92b58d3ebf4b@mail.gmail.com>

>
> > If this is the way of using sqlite, it is still cumbersome as a lot of
> > other classes that work on files can work on file-like (and isn't it the
> > whole point of Python ;) ?
>
> I don't think that sqlite can work on streams, or on file-like objects.



Obviously it cannot, but what are the reason it can't ?


You could just save it as tempfile.mktemp(). I think the utility of this
> function in this case outweighs the possibility that your routine will
> coincidentally overwrite another file of the same name within the same
> fraction of a second. The warning is dire, but when you think about it
> in context it doesn't seem that bloody likely that there will be a
> problem. ;)


Well, I could, but in this case I have to delete the file myself, which the
whole point of the use of TemporaryFile.

Matthieu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/71b4f40b/attachment.html>

From xah at xahlee.org  Fri Oct 19 23:28:14 2007
From: xah at xahlee.org (Xah Lee)
Date: Fri, 19 Oct 2007 20:28:14 -0700
Subject: Distributed RVS, Darcs, tech love
Message-ID: <1192850894.310464.89070@e9g2000prf.googlegroups.com>

When i first heard about distributed revision control system about 2
years ago, i heard of Darcs, which is written in Haskell. I was hugely
excited, thinking about the functional programing i love, and the no-
side effect pure system i idolize, and the technology of human animal
i rapture in daily.

I have no serious actual need to use a revision system (RVS) in recent
years, so i never really tried Darcs (nor using any RVS). I just
thought the new-fangled distributed tech in combination of Haskell was
great.

About few months ago, i was updating a 6-year old page i wrote on unix
tools: ( http://xahlee.org/UnixResource_dir/usoft.html ) and i was
trying to update myself on the current state of art of revision
systems. I read Wikipedia this passage:

http://en.wikipedia.org/wiki/Darcs

? Darcs currently has a number of significant bugs (see e.g. [1]). The
most severe of them is "the Conflict bug" - an exponential blowup in
time needed to perform conflict resolution during merges, reaching
into the hours and days for "large" repositories. A redesign of the
repository format and wide-ranging changes in the codebase are planned
in order to fix this bug, and work on this is planned to start in
Spring 2007 [2].  ?

This somewhat bursted my bubble, as there always was some doubt in the
back of my mind about just how Darcs is not just a fantasy-ware
trumpeted by a bunch of functional tech geekers. (i heard of Darcs in
irc emacs and haskell channels, who are often student and hobbiests
programers)

Also, in my light research, it was to my surprise, that Darcs is not
the only distributed systems, and perhaps not the first one neither,
contrary to my impressions. In fact, today there are quite a LOT
distributed revision systems, actually as a norm. When one looks into
these, such as Git ( http://en.wikipedia.org/wiki/Git_(software) ) one
finds that some of them are already in practical industrial use for
large projects, as opposed to Darcs's academic/hobbist kind of
community.

In addition to these findings, one additional that greatly pissed me
off entirely about Darcs, is the intro of the author (David Roundy)'s
essay about his (questionable-sounding) ?theory of patches? used in
Darcs. ( http://darcs.net/manual/node8.html#Patch )

Here's the 2 passages:

?I think a little background on the author is in order. I am a
physicist, and think like a physicist. The proofs and theorems given
here are what I would call ``physicist'' proofs and theorems, which is
to say that while the proofs may not be rigorous, they are practical,
and the theorems are intended to give physical insight. It would be
great to have a mathematician work on this, but I am not a
mathematician, and don't care for math.?

?From the beginning of this theory, which originated as the result of
a series of email discussions with Tom Lord, I have looked at patches
as being analogous to the operators of quantum mechanics. I include in
this appendix footnotes explaining the theory of patches in terms of
the theory of quantum mechanics. I know that for most people this
won't help at all, but many of my friends (and as I write this all
three of darcs' users) are physicists, and this will be helpful to
them. To non-physicists, perhaps it will provide some insight into how
at least this physicist thinks.?

I love math. I respect Math. I'm nothing but a menial servant to
Mathematics. Who the fuck is this David guy, who proclaims that he's
no mathematician, then proceed to tell us he dosen't fucking care
about math? Then, he went on about HIS personal fucking zeal for
physics, in particular injecting the highly quacky ?quantum mechanics?
with impunity.

  Xah
  xah at xahlee.org
? http://xahlee.org/



From gagsl-py2 at yahoo.com.ar  Sun Oct 28 23:10:30 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 00:10:30 -0300
Subject: Anagrams
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
	<1193185723.647144.302410@i13g2000prf.googlegroups.com>
	<1193241800.343932.23170@k35g2000prh.googlegroups.com>
	<1193242608.953442.217400@q3g2000prf.googlegroups.com>
	<mailman.419.1193243258.13605.python-list@python.org>
	<1193283612.186789.41350@i38g2000prf.googlegroups.com>
Message-ID: <op.t0xu3shrx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Thu, 25 Oct 2007 00:40:12 -0300, sandipm <sandip.more at gmail.com>  
escribi?:

> thanks..I  am using python 2.4.4. so i couldnt find "all" either as
> inbuilt module
> or by doing "from itertools import *",  "all" is not available.
> I think I need to move to 2.5 then....

It's easy to write in pure Python:

def all(iterable):
     for item in iterable:
         if not item: return False
     return True

And its cousin, any:

def any(iterable):
     for item in iterable:
         if item: return True
     return False

> but what are the pros/cons of moving to 2.5? as we are using 2.4.4 on
> production server which is quite stable.
> any good pointers?

Pros: See the "What's new" document  
http://www.python.org/doc/2.5/whatsnew/whatsnew25.html

Cons: As always with any "dot" release, extension modules are incompatible  
and have to be recompiled. Even a year after the 2.5 release, you may have  
some problems finding precompiled binaries. Ensure that all your required  
libraries are available for 2.5

-- 
Gabriel Genellina



From mec2paris at gmail.com  Mon Oct 22 05:53:25 2007
From: mec2paris at gmail.com (mec2paris at gmail.com)
Date: Mon, 22 Oct 2007 02:53:25 -0700
Subject: =?utf-8?q?Problems_in_using_wxPython_in_a_multithreaded_context=E2=80=8F?=
Message-ID: <1193046805.616227.232330@k35g2000prh.googlegroups.com>


For my C application, I use many interpreters (withh the fonction
Py_NewInterpreter()). For my needs, I create many GUI with wxPython
and I have problems. Here is My C Code:

{
    PyEval_InitThreads();
    Py_Initialize();
    PyImport_ImportModule("myModule");//it creates a wxApp and a GUI
    ......


    Py_NewInterpreter();
    PyImport_ImportModule("anotherModule");//it should create a new
wxApp and a new GUI

Unfortunately this code does not work. In fact, My C application which
use many interpreters is seen by wxPython as a single application, and
as wxPython is thread safe, it is not possible to create a second
App.
I have to use many interpreters to separate variables and to avoid
links between modules.

What could I do to create many GUI in different interpreters (each GUI
have to be in a separate environment)???

Thanks.



From deets at nospam.web.de  Fri Oct 26 13:23:01 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 26 Oct 2007 19:23:01 +0200
Subject: Interpreter hook during evaluation
In-Reply-To: <1193416052.060300.254560@d55g2000hsg.googlegroups.com>
References: <1193416052.060300.254560@d55g2000hsg.googlegroups.com>
Message-ID: <5oem46FmetmdU1@mid.uni-berlin.de>

WilliamKF at gmail.com schrieb:
> Hello,
> 
> I would like access to a hook inside Python that would allow me to
> register a C++ function to be called periodically during the
> evaluation of a Python script.
> 
> Does any such thing exist today in Python? I poked around but didn't
> find anything.
> 
> I want to do this for interrupt handling. I'd like to be able to
> interrupt long running Python commands. I have a hook which would
> throw a C++ exception if an interrupt is detected. I would then catch
> this at the place where my application which embeds Python invokes a
> Python command. My hook is written to be very fast, so calling it
> every Python instruction would not be that bad in terms of
> performance.
> 
> I'd like to avoid changing the existing Python implementation, which
> is why I'm looking for a hook. Otherwise, a user would not be able to
> substitute in their own Python implementation if they so desire
> instead of taking the default on our app uses.

trace.

http://www.dalkescientific.com/writings/diary/archive/2005/04/20/tracing_python_code.html


Diez


From deets at nospam.web.de  Wed Oct 31 09:19:41 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 31 Oct 2007 14:19:41 +0100
Subject: Creating a temporary file in Python
References: <1193832119.872710.108920@k79g2000hse.googlegroups.com>
	<5ora0aFo7tsmU1@mid.uni-berlin.de>
	<1193834898.945261.171310@z9g2000hsf.googlegroups.com>
Message-ID: <5ordndFnvhfgU1@mid.uni-berlin.de>

looping wrote:

> On Oct 31, 2:16 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> 
>> I'm not an expert, but I think you need to close the file first - you
>> under windows here, which can be picky about such stuff AFAIK. Or maybe
>> there is some other mode-specifier.
>>
>> Diez
> 
> Actually closing the file delete it without any chance to use it...
> 
> Well I changed my code this way:
> 
> filename = tempfile.mktemp(suffix='.sql')
> f = open(filename, 'wb')
> try:
>     f.write(txt.encode('cp1252'))
>     f.close()
>     p = Popen([SQL_PLUS, '-s', dsn,
>         '@', SQL_PLUS_SCRIPT, f.name],
>         stdout=PIPE, stderr=STDOUT)
>     p.wait()
> finally:
>     os.remove(filename)
> 
> I understand the security issues of temporary file (as explained in
> Python doc) but maybe standard lib need a NamedTemporaryFile that
> could be used by another process.

As I said: that most likely is a limitation of your operating system, not
Python.

Diez


From devnew at gmail.com  Wed Oct 31 02:48:18 2007
From: devnew at gmail.com (devnew at gmail.com)
Date: Wed, 31 Oct 2007 06:48:18 -0000
Subject: jpeg image read class
Message-ID: <1193813298.847806.281490@i38g2000prf.googlegroups.com>

hi
i am new to python and PIL and was trying to write a class to read and
write RGB color model jpeg images..
i came up with this class below..i want to know if this is the way to
read/write the RGB color model jpeg..if anyone can give feedback (esp
on the methods  writeImage1( )  and writeImage2( )   it wd help my
studies ..
TIA
dn

#jpgpy.py

import Image
from sys import argv
from numpy import array


class JPGFile:
	def __init__(self,filename):
		self._filename=filename
		self._height=0
		self._width=0
		self._mode=""
		self._rgblist=[]
		self._pixellist=[]
		self._pixarray=None
		self.readImage()

	def getheight(self):
		return self._height
	def getwidth(self):
		return self._width

	def getpixellist(self):
		return self._pixellist

	def getrgblist(self):
		return self._rgblist

	def makepixval(self,(r,g,b)):
		alpha=255
		pixval=(alpha<<24)|(r<<16 )|( g<<8) | b
		return pixval

	def readImage(self):
		im=Image.open(self._filename)
		self._mode=im.mode
		self._width,self._height=im.size
		for y in range(self._height):
			for x in range(self._width):
				r,g,b=im.getpixel((x,y))
				self._rgblist.append((r,g,b))
				pval=self.makepixval((r,g,b))
				self._pixellist.append(pval)
		self._pixarray=array(self._pixellist,float)

	def makergb(self,pixval):
		alpha=pixval>>24
		red=(pixval>>16 )&255
		green=(pixval>>8 )&255
		blue=(pixval)& 255
		return red,green,blue

	def writeImage1(self,fname,data,width,height):
		imnew=Image.new(self._mode,(width,height))
		newrgblist=[]
		for i in range(len(data)):
			r,g,b=self.makergb(data[i])
			newrgblist.append((r,g,b))
		index=0
		for y in range(height):
			for x in range(width):
				imnew.putpixel((x,y),newrgblist[index])
				index+=1
		imnew.save(fname)

	def writeImage2(self,fname,data,width,height):
		imnew=Image.new(self._mode,(width,height))
		newrgblist=[]
		for i in range(len(data)):
			r,g,b=self.makergb(data[i])
			newrgblist.append((r,g,b))
		imnew.putdata(newrgblist)
		imnew.save(fname)


imgname=argv[1] #Usage: python jpgpy.py myimage.jpg
print "to read from:",imgname
x=JPGFile(imgname)
print x.getheight(),"",x.getwidth()
pixlist=x.getpixellist()
rgbtpllist=x.getrgblist()
w=x.getwidth()
h=x.getheight()
x.writeImage1("newimage1.jpg",pixlist,w,h)



From goodger at python.org  Mon Oct 15 20:35:47 2007
From: goodger at python.org (David Goodger)
Date: Mon, 15 Oct 2007 20:35:47 -0400
Subject: PyCon 2008: Call for Talk & Tutorial Proposals
Message-ID: <47140763.30009@python.org>

Proposals for PyCon 2008 talks & tutorials are now being accepted.
The deadline for proposals is November 16.

PyCon 2008 will be held in Chicago, Illinois, USA, from March 13-20.

http://us.pycon.org/2008/


Tutorial Day: Half-Day Tutorials
================================

Do you enjoy teaching classes or tutorials?  Are you good at it?
PyCon is looking for proposals for tutorials.  The PyCon Tutorial Day
will be March 13, 2008 (Thursday).

There will be morning and afternoon tutorial sessions (3 hours each,
plus a 30-minute break); presenters may request two sessions in order
to make up a full day.  Tutorials may be on any topic, but obviously
should be instructional in nature.

Full details and instructions here:
http://us.pycon.org/2008/tutorials/proposals/


Conference Days: Scheduled Talks
================================

Want to share your experience and expertise?  PyCon is looking for
proposals to fill the formal presentation tracks.  The PyCon
Conference Days will be March 14-16, 2008 (Friday-Sunday).

Previous PyCon conferences have had a broad range of presentations,
ranging from reports on academic and commercial projects to tutorials
and case studies.  We hope to continue that tradition this year.  As
long as the presentation is interesting and potentially useful to the
Python community, it will be considered for inclusion in the program.

We're especially interested in short tutorial presentations that will
teach conference-goers something new and useful. Can you show
attendees how to: use a module? explore a Python language feature?
package an application?

Full details and instructions here:
http://us.pycon.org/2008/conference/proposals/


Development Sprints
===================

Four days of development sprints will follow the conference days,
March 17-20 (Monday-Thursday).  Start thinking about sprints you'd
like to lead or join.  We'll have an announcement about these soon!
http://us.pycon.org/2008/sprints/


Lightning Talks & Open Space
============================

If you don't want to make a formal presentation, you can still bring
your new project or idea to PyCon.

There will be several sessions of Lightning Talks (five minute
mini-talks, scheduled at the conference).
http://us.pycon.org/2008/conference/lightning

There will also be several Open Space rooms for informal and
spur-of-the-moment presentations. Open Space slots are allocated
during PyCon on a first-come first-served basis. These slots can be
used for presentations, round table discussions, hands-on tutorials,
follow-up discussions after scheduled talks, or anything else you wish
to present.
http://us.pycon.org/2008/conference/openspace/


Help Out!
=========

PyCon 2008 planning is in full swing, but we can still use more help,
*your* help!  http://us.pycon.org/2008/helping/



From Florian.Lindner at xgm.de  Fri Oct 12 17:01:59 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 23:01:59 +0200
Subject: Problem with global
References: <feoflr$cgs$01$1@news.t-online.com>
	<z6idnU4_zZGoQpLanZ2dnUVZ_qXinZ2d@comcast.com>
Message-ID: <feonci$r9d$01$1@news.t-online.com>

Larry Bates wrote:

> Florian Lindner wrote:
>> Hello,
>> I have a little problem with the global statement.
>> 
>> def executeSQL(sql, *args):
>>     try:
>>         import pdb; pdb.set_trace()
>>         cursor = db.cursor()  # db is <type 'NoneType'>.
>>         [...]
>>     except:
>>         print "Problem contacting MySQL database. Please contact root."
>>         sys.exit(-1)
>> 
>> 
>> db  = None # Global Variable for DB connection
>>     
>> def main():
>>     [...]
>>     global db
>>     db = MySQLdb.connect(...)
>>     [...]
>>     executeSQL(sql, args)
>> 
>> 
>> Why isn't the global variable db not written in main() to be a mysql
>> connection and still none type in executeSQL?
>> 
>> Thanks,
>> 
>> Florian
> 
> Because you have it to let executeSQL know that it is global or it creates
> a local copy in local namespace.

That's not right in the context because db is read before it written.
Therefore the global copy springs into the local namespace.

> def executeSQL(sql, *args):
>      global db
>      try:
>          import pdb; pdb.set_trace()
>          cursor = db.cursor()  # db is <type 'NoneType'>.
>          [...]
>      except:
>          print "Problem contacting MySQL database. Please contact root."
>          sys.exit(-1)

I've solved it. It was a problem you could not have possibly seen. Actually
in my script executeSQL is called before db = MySQLdb.connect(..) is
called. When I have simplified the code for the posting I've changed it
made it right without knowing.

Regards,

Florian


From pavlovevidence at gmail.com  Wed Oct 24 21:03:55 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 24 Oct 2007 18:03:55 -0700
Subject: building a linux executable
In-Reply-To: <1193260111.816092.258690@y27g2000pre.googlegroups.com>
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
	<1193228750.497591.202330@y27g2000pre.googlegroups.com>
	<1193260111.816092.258690@y27g2000pre.googlegroups.com>
Message-ID: <1193274235.559732.187230@v29g2000prd.googlegroups.com>

On Oct 24, 5:08 pm, Prateek <sure... at gmail.com> wrote:
> On Oct 24, 5:25 pm, Paul Boddie <p... at boddie.org.uk> wrote:
>
> > On 24 Okt, 14:20, Bjoern Schliessmann <usenet-
>
> > mail-0306.20.chr0n... at spamgourmet.com> wrote:
>
> > > I'm sorry I cannot help, but how many linux distros have no python
> > > installed or no packages of it?
>
> > It's not usually the absence of Python that's the problem. What if
> > your application uses various extension modules which in turn rely on
> > various libraries (of the .so or .a kind)? It may be more convenient
> > to bundle all these libraries instead of working out the package
> > dependencies for all the target distributions, even if you know them
> > all.
>
> > Paul
>
> Thanks Paul,
>
> So I've bundled all the extension modules (cx_Freeze helped me out
> with that). Here is what I did:
>
> if sys.platform.startswith("linux"):
>     import [add a bunch of imports here]
>
> This import statement immediately imports all modules which will be
> required. Hence, cx_Freeze is easily able to find them and I can put
> all the .so files with the distro.
>
> The problem is that some of these .so files (_hashlib.so) are hard-
> linked to /lib/libssl.so and /lib/libcrypto.so. I cannot simply just
> copy those (libssl/libcrypto) files into the distribution folder (and
> cx_Freeze won't do anything about them because they are not Python
> modules). I need a way to figure out how to get _hashlib.so to refer
> to a libssl.so which is in the same directory (I would have thunk that
> it should use the PATH environment variable - apparently not).


The environment variable you want is LD_LIBRARY_PATH.

Also, if you're not aware, the ldd command can print out the library
dependencies.


> This seems to be a simple enough problem, doesn't it??
>
> NB: Has the community come up with a better way to distribute Python
> executables on linux? I'd also like to hear from folks who've got
> linux distributables of medium to large scale python programs...

Since most Linux systems have Python installed these days, the impetus
isn't quite as strong, even given the issues brought up here.


Carl Banks



From goon12 at gmail.com  Wed Oct 17 09:52:13 2007
From: goon12 at gmail.com (Joe Riopel)
Date: Wed, 17 Oct 2007 09:52:13 -0400
Subject: Best Python Linux distribution
In-Reply-To: <47160015.3070404@muzz.co.uk>
References: <47160015.3070404@muzz.co.uk>
Message-ID: <6a2ccd190710170652i62cc6541ie5e69ce7fc8dcb03@mail.gmail.com>

On 10/17/07, Anthony Perkins <anthony at muzz.co.uk> wrote:
> Hi everyone,
>
> What is the best GNU/Linux distribution (or the most preferred) for
> developing Python applications?  Ideally I would like one with both
> Python *and* IDLE included on the install media (neither Ubuntu nor SUSE
> have IDLE on the CDs), so that I can use it on machines without a
> network connection.


IDLE and Python came installed on Slackware 12, I am not 100% sure
about previous versions.


From robin at reportlab.com  Wed Oct 31 12:36:37 2007
From: robin at reportlab.com (Robin Becker)
Date: Wed, 31 Oct 2007 16:36:37 +0000
Subject: why did these companies choose Tcl over Python
In-Reply-To: <4727B465.1070600@v.loewis.de>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
	<4727B465.1070600@v.loewis.de>
Message-ID: <4728AF15.8080802@chamonix.reportlab.co.uk>

Martin v. L?wis wrote:
.......
> I think this question needs to be answered on a case-by-case basis,
> but my guess is that it is in most cases historical. Work on Tcl
> started in 1988, and it was the first (major?) embeddable scripting
> language (that is also free software etc). Python wasn't released
> until 1991, and wasn't first recognized as being just as easily
> embeddable (and I think early releases weren't as easily embeddable
> as today's Python is).
......
in the 70's many of the people I knew in engineering were using forth as an 
embedded language. Of course the embedding was the final application as the 
controlling computers were really puny eg pdp8/9/11.

At that time the concept of free software hadn't even arisen. I believe forth 
was proprietary, but it was widely available to academics and many machine tools 
and similar control applications used it.
-- 
Robin Becker



From paul.nospam at rudin.co.uk  Mon Oct 15 23:14:20 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Tue, 16 Oct 2007 04:14:20 +0100
Subject: logging module - restricted mode error
Message-ID: <87przflpir.fsf@rudin.co.uk>


I'm occasionally seeing tracebacks like this:

Traceback (most recent call last):
  File "logging/__init__.py", line 744, in emit
  File "logging/__init__.py", line 630, in format
  File "logging/__init__.py", line 421, in format
RuntimeError: instance.__dict__ not accessible in restricted mode

I'm not sure what it means. Googling leads me to 
<http://docs.python.org/lib/restricted.html> but that says that those
modules were disabled in 2.3 and I'm running 2.5.1. In any case I'm
not using them (although it could be that one of the 3rd party modules
I'm using does something.)

Could someone please explain what this error means?



From mensanator at aol.com  Wed Oct 10 02:18:16 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 09 Oct 2007 23:18:16 -0700
Subject: APOLOGY (was: pytz has so many timezones!)
In-Reply-To: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
Message-ID: <1191997096.727547.171900@22g2000hsm.googlegroups.com>

I apologize for being a dick. It won't happen again.

I was actually thinking that the 25 standard
timezones (which make a reasonable list or
can be easily generated by clicking a map)
could serve as a filter to make the detail
list reasonably sized.

Something like this:

import pytz
import datetime
import sqlite3
import random

utc = pytz.timezone('UTC')
utc_dt = datetime.datetime(2007,1,1,0,0,0,tzinfo=utc)
offset_zone = []

for i in pytz.all_timezones:
  the_zone = pytz.timezone(i)
  loc_dt = utc_dt.astimezone(the_zone)
  loc_offset = loc_dt.strftime('%z')
  offset_zone.append((loc_offset,the_zone.zone))

con = sqlite3.connect(":memory:")
cur = con.cursor()
cur.executescript("""
    create table tz(
        offset,
        zone
    );
    """)

cur.executemany("""
INSERT INTO tz(offset,
               zone)
VALUES      (?,?)"""
, offset_zone)

cur.execute("""
SELECT DISTINCT offset
FROM  tz
WHERE offset LIKE '+%'
ORDER BY offset;
""")

east = cur.fetchall()

cur.execute("""
SELECT DISTINCT offset
FROM  tz
WHERE offset LIKE '-%'
ORDER BY offset DESC;
""")

west = cur.fetchall()

distinct_offsets = east + west

print
print 'Choose your GMT offset:'
for i in distinct_offsets:
  if i[0]=='+0000' or i[0]=='+0600' or i[0]=='+1200' or i[0]=='-1200'
or i[0]=='-0600':
    print
  print i[0],

print
print

the_choice = random.choice(distinct_offsets)

print 'Offset',the_choice[0],'chosen.'
print

cur.execute("""
SELECT offset,
       zone
FROM   tz
WHERE offset=?
ORDER BY offset;
""",the_choice)

list_o_zones = cur.fetchall()

print 'Which timezone?'
print

for i in list_o_zones: print i[0],i[1]


##  Choose your GMT offset:
##
##  +0000 +0100 +0200 +0300 +0330 +0400 +0430 +0500 +0530 +0545
##  +0600 +0630 +0700 +0800 +0900 +0930 +0945 +1000 +1030 +1100 +1130
##  +1200 +1300 +1345 +1400
##  -1200 -1100 -1000 -0930 -0900 -0800 -0700
##  -0600 -0500 -0400 -0330 -0300 -0200 -0100
##
##  Offset -0930 chosen.
##
##  Which timezone?
##
##  -0930 Pacific/Marquesas
##
##
##
##  Choose your GMT offset:
##
##  +0000 +0100 +0200 +0300 +0330 +0400 +0430 +0500 +0530 +0545
##  +0600 +0630 +0700 +0800 +0900 +0930 +0945 +1000 +1030 +1100 +1130
##  +1200 +1300 +1345 +1400
##  -1200 -1100 -1000 -0930 -0900 -0800 -0700
##  -0600 -0500 -0400 -0330 -0300 -0200 -0100
##
##  Offset +0945 chosen.
##
##  Which timezone?
##
##  +0945 Australia/Eucla
##
##
##
##  Choose your GMT offset:
##
##  +0000 +0100 +0200 +0300 +0330 +0400 +0430 +0500 +0530 +0545
##  +0600 +0630 +0700 +0800 +0900 +0930 +0945 +1000 +1030 +1100 +1130
##  +1200 +1300 +1345 +1400
##  -1200 -1100 -1000 -0930 -0900 -0800 -0700
##  -0600 -0500 -0400 -0330 -0300 -0200 -0100
##
##  Offset -0100 chosen.
##
##  Which timezone?
##
##  -0100 America/Scoresbysund
##  -0100 Atlantic/Azores
##  -0100 Atlantic/Cape_Verde
##  -0100 Etc/GMT+1
##
##
##
##  Choose your GMT offset:
##
##  +0000 +0100 +0200 +0300 +0330 +0400 +0430 +0500 +0530 +0545
##  +0600 +0630 +0700 +0800 +0900 +0930 +0945 +1000 +1030 +1100 +1130
##  +1200 +1300 +1345 +1400
##  -1200 -1100 -1000 -0930 -0900 -0800 -0700
##  -0600 -0500 -0400 -0330 -0300 -0200 -0100
##
##  Offset +1000 chosen.
##
##  Which timezone?
##
##  +1000 Antarctica/DumontDUrville
##  +1000 Asia/Sakhalin
##  +1000 Asia/Vladivostok
##  +1000 Australia/Brisbane
##  +1000 Australia/Lindeman
##  +1000 Australia/Queensland
##  +1000 Etc/GMT-10
##  +1000 Pacific/Guam
##  +1000 Pacific/Port_Moresby
##  +1000 Pacific/Saipan
##  +1000 Pacific/Truk
##  +1000 Pacific/Yap
##
##
##
##  Choose your GMT offset:
##
##  +0000 +0100 +0200 +0300 +0330 +0400 +0430 +0500 +0530 +0545
##  +0600 +0630 +0700 +0800 +0900 +0930 +0945 +1000 +1030 +1100 +1130
##  +1200 +1300 +1345 +1400
##  -1200 -1100 -1000 -0930 -0900 -0800 -0700
##  -0600 -0500 -0400 -0330 -0300 -0200 -0100
##
##  Offset +0300 chosen.
##
##  Which timezone?
##
##  +0300 Africa/Addis_Ababa
##  +0300 Africa/Asmara
##  +0300 Africa/Asmera
##  +0300 Africa/Dar_es_Salaam
##  +0300 Africa/Djibouti
##  +0300 Africa/Kampala
##  +0300 Africa/Khartoum
##  +0300 Africa/Mogadishu
##  +0300 Africa/Nairobi
##  +0300 Antarctica/Syowa
##  +0300 Asia/Aden
##  +0300 Asia/Baghdad
##  +0300 Asia/Bahrain
##  +0300 Asia/Kuwait
##  +0300 Asia/Qatar
##  +0300 Asia/Riyadh
##  +0300 Etc/GMT-3
##  +0300 Europe/Moscow
##  +0300 Europe/Volgograd
##  +0300 Indian/Antananarivo
##  +0300 Indian/Comoro
##  +0300 Indian/Mayotte
##  +0300 W-SU



##  Choose your GMT offset:
##
##  +0000 +0100 +0200 +0300 +0330 +0400 +0430 +0500 +0530 +0545
##  +0600 +0630 +0700 +0800 +0900 +0930 +0945 +1000 +1030 +1100 +1130
##  +1200 +1300 +1345 +1400
##  -1200 -1100 -1000 -0930 -0900 -0800 -0700
##  -0600 -0500 -0400 -0330 -0300 -0200 -0100
##
##  Offset -0600 chosen.
##
##  Which timezone?
##
##  -0600 America/Belize
##  -0600 America/Cancun
##  -0600 America/Chicago
##  -0600 America/Costa_Rica
##  -0600 America/El_Salvador
##  -0600 America/Guatemala
##  -0600 America/Indiana/Knox
##  -0600 America/Indiana/Petersburg
##  -0600 America/Indiana/Tell_City
##  -0600 America/Indiana/Vincennes
##  -0600 America/Indiana/Winamac
##  -0600 America/Knox_IN
##  -0600 America/Managua
##  -0600 America/Menominee
##  -0600 America/Merida
##  -0600 America/Mexico_City
##  -0600 America/Monterrey
##  -0600 America/North_Dakota/Center
##  -0600 America/North_Dakota/New_Salem
##  -0600 America/Rainy_River
##  -0600 America/Rankin_Inlet
##  -0600 America/Regina
##  -0600 America/Swift_Current
##  -0600 America/Tegucigalpa
##  -0600 America/Winnipeg
##  -0600 CST6CDT
##  -0600 Canada/Central
##  -0600 Canada/East-Saskatchewan
##  -0600 Canada/Saskatchewan
##  -0600 Etc/GMT+6
##  -0600 Mexico/General
##  -0600 Pacific/Galapagos
##  -0600 US/Central
##  -0600 US/Indiana-Starke

Why do all the Etc/GMTxxx zones appear to have
the sign of their offset reversed? Such as
-0600 for Etc/GMT+6?



From raims at dot.com  Sun Oct  7 10:17:33 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sun, 7 Oct 2007 16:17:33 +0200
Subject: Override 'and' and 'or'
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
Message-ID: <1i5mfo6.w022d415o942cN%raims@dot.com>

Dekker <m.aschwanden at gmail.com> wrote:
> Is it possible to override 'and' and/or 'or'? I cannot find a special
> method for it... __and__ and __rand__ and __or__ and __ror__ are for
> binary manipulation... any proposals?

If you want to customize the truth value testing you have to implement
__nonzero__

"
 __nonzero__(   self)
    Called to implement truth value testing, and the built-in operation
bool(); should return False or True, or their integer equivalents 0 or
1. When this method is not defined, __len__() is called, if it is
defined (see below). If a class defines neither __len__() nor
__nonzero__(), all its instances are considered true.
"

Keep in mind the relation between __len__ and __nonzero__

ps. why you need to customize such a thing?

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From trekker182 at comcast.net  Tue Oct 23 11:56:33 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Tue, 23 Oct 2007 11:56:33 -0400
Subject: greatest and least of these...
Message-ID: <471E19B1.2040909@comcast.net>

I just wrote a program to let the user input a series of whole numbers 
and tell them which is least and which is greatest based off of a menu.  
However, the menu isn't kicking in after they pick a number.  I included 
a while statement for a loop just for the menu and compared it to my 
other programs that have a similar setup and are working, but I'm 
stumped.   Here's the program...

def main():

    #define and initialize variables
    #choice as int
    choice = 0
    #number as int
    number = 0

    #intro
    print "WELCOME TO THE GREATEST AND LEAST NUMBER PROGRAM!"
    print

    #Menu loop
    while choice != 2:
        #display menu
        print "Please choose from the following menu: "
        print "1. Enter a number"
        print "2. Exit"
        print
       
        #prompt user for their menu choice
        choice = input("Enter your choice here: ")
           
        #if statements to determine which choice
        if choice == 1:
            nums = []
            while number >=0:
                nums.append(number)
                number = input("Please enter a number.")


        elif choice == 2:
            print "Have a great day!"

            if len(nums) > 0:
                print "The smallest number that you entered was:",min(nums)
                print "The largest number that you entered was:",max(nums)
                      
        else:
            #invalid
            print "Invalid selection.  Enter either one or two."
            print

Also, if they quit the program with choice #2 and entered numbers, it 
should display the greatest and least of them.  If they just started and 
didn't enter anything and want to quit, I get an error message saying 
UnboundLocalError: local variable 'nums' referenced before assignment.  
Isn't the if statement supposed to keep python from going there since if 
they didn't enter any input, the length of the list should just be zero. 



From brandon.mcginty at gmail.com  Mon Oct  1 18:59:41 2007
From: brandon.mcginty at gmail.com (Brandon McGinty)
Date: Mon, 1 Oct 2007 15:59:41 -0700
Subject: Algebraic Modules For Python
Message-ID: <47017be5.0335640a.2603.123d@mx.google.com>

Hi All,
I know that there is probably a great deal of literature on this on the net,
but I don't have any time to go searching.
Does anyone have any suggestions for modules that will allow python to do
the functions of a graphing calculator or similar device, performing
operations on matricies, graphing or listing points for function, etc?
If not, I may be developing some; I am a blind highschool student and as of
now there are no accessible graphing calculators for me to use in my algebra
2 class.
Thanks for your help.
 
Thanks,
Brandon McGinty
 
 
--
Brandon McGinty
McGinty Soft Ltd.
Website design, configuration, and maintenance
Python and PHP coder
Email:brandon.mcginty at gmail.com <mailto:Emailbrandon.mcginty at gmail.com> 
MSN:brandon_mcginty at hotmail.com
Phone:(480)-202-5790
 
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071001/4a1fd7e8/attachment.html>

From steve at REMOVE-THIS-cybersource.com.au  Tue Oct  9 09:39:00 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 09 Oct 2007 13:39:00 -0000
Subject: NUCULAR fielded text searchable indexing
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
Message-ID: <13gn13kev0vbh9c@corp.supernews.com>

On Tue, 09 Oct 2007 12:46:34 +0000, Istvan Albert wrote:

> On Oct 9, 7:26 am, aaron.watt... at gmail.com wrote:
> 
>> No, it doesn't stand for anything.
> 
> It also reminds me of someone we all know, and I wish it didn't.
> 
> As the latin proverb says "Nomen est omen". Calling your package
> "docindexer" would draw a lot more people. It is hard to justify to a
> third party that a project named "nucular" actually does something
> useful.

Yeah, like those crappy products "Linux", "Lisp", "Apache", "Windows", 
"Java", "Google", "Yahoo" and especially "Python". Can you imagine trying 
to tell your boss that you want to use something called "Python" for your 
programming project?


*wink*



-- 
Steven.


From andreas.tawn at ubisoft.com  Mon Oct  8 09:21:14 2007
From: andreas.tawn at ubisoft.com (Andreas Tawn)
Date: Mon, 8 Oct 2007 15:21:14 +0200
Subject: Really basic problem
In-Reply-To: <13gk9tdonh6gn90@corp.supernews.com>
Message-ID: <8AEDA5E3386EA742B8C24C95FF0C758002769328@PDC-MAIL3.ubisoft.org>

> > I guess this means that Python has some concept of "close 
> enough", but
> > I'll have to defer to someone more knowledgeable to explain that.
> 
> No, not really, except in the sense that any floating point 
> calculation 
> will be necessarily imprecise in that sense.
[snip]
> So typing 0.3 is the same as typing 0.29999999999999999 or 
> 0.30000000000000001 as far as floating point binary values 
> are concerned.
> 
> (Although note that these results are platform dependent. 
> Your mileage 
> may vary.)
> 
> -- 
> Steven
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 

After some caffeine and a head-smack, I realise that you're absolutely
right and I just made the same mistake as the OP (doh).

It does demonstrate just how sneaky floating point representations are
though.

Cheers,

Andreas Tawn
Lead Technical Artist
Ubisoft Reflections


From gagsl-py2 at yahoo.com.ar  Wed Oct 17 23:08:19 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 00:08:19 -0300
Subject: Write by logging.FileHandler to one file by many processess
References: <ff5397$j9g$1@nemesis.news.tpi.pl>
	<1192628746.196204.207620@t8g2000prg.googlegroups.com>
	<5nmjffFiouurU4@mid.uni-berlin.de>
Message-ID: <op.t0dhn5gmx6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 17 Oct 2007 11:10:55 -0300, Diez B. Roggisch <deets at nospam.web.de>  
escribi?:

>> On Oct 17, 3:33 pm, Rafa  Zawadzki <blus... at jabberpl.org> wrote:
>>>
>>> As I saw in logging source - there is no lock per file during making
>>> emit() (only lock per thread).
>>>
>>> So, my question is - is it safe to log into one file using many
>>> processess uses logging logger?
>
> I presume things get messed up... but I don't know for sure.

Yes, output from several processes comes horribly mixed...
I've avoided it using separate log files for each process; but if that's  
not possible, one could try using syslog or a SocketHandler and a separate  
listening process.

-- 
Gabriel Genellina



From michael.langford at gmail.com  Wed Oct 31 08:08:41 2007
From: michael.langford at gmail.com (Michael)
Date: Wed, 31 Oct 2007 12:08:41 -0000
Subject: py2exe (or other exe builder) on Vista system for Vista/XP install
	targets.
Message-ID: <1193832521.937425.94860@o3g2000hsb.googlegroups.com>

I'm trying to build a exe on a vista system using py2exe. It will
deploy to vista and XP systems. If it matters, the application uses
pyserial, as well. I have VS Studio 2005 installed on this laptop as
well. I've found this so far that seems to be identical to what I'm
seeing (for non-python programs): http://www.thescripts.com/forum/thread611031.html

When I attempt to run, I get "The procedure entry point
_except_handler4_common could not be located in the dynamic link
library mscvrt.dll."  Apparently vista has one more
_except_handler#_common function than XP does.

I've used py2exe several times before (however not recenty, as it was
before Vista came out). I'm using a very basic setup file right now:
from distutils.core import setup
import py2exe

setup(console=['responderbot.py'])

Are there any ways to either py2exe work or any other exe builder for
my build environment and deployment scenario? I don't really want to
dig around in py2exe/pyserial internals to force it to use the dll's
that the MS support person said it should be using. Will any automated
exe builder work where I am?

I've heard IronPython can compile down to an exe....is it a valid
alternative? Should my CPython utility be compatible with ipy? I only
use the random,time,sys, and serial modules. I really know very little
about ipy.

          --Michael



From m.aschwanden at gmail.com  Sun Oct  7 10:48:43 2007
From: m.aschwanden at gmail.com (Dekker)
Date: Sun, 07 Oct 2007 14:48:43 -0000
Subject: Override 'and' and 'or'
In-Reply-To: <13ghqmkl33t3ra4@corp.supernews.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<13ghqmkl33t3ra4@corp.supernews.com>
Message-ID: <1191768523.821775.178080@50g2000hsm.googlegroups.com>

On 7 Okt., 16:19, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Sun, 07 Oct 2007 13:52:15 +0000, Dekker wrote:
> > Is it possible to override 'and' and/or 'or'?
>
> Not without hacking the Python source code, in which case what you've got
> is no longer Python.
>
> Why do you want to do so?
>
> --
> Steven.

Well I think it is not possible what I wanted to achieve. By
overriding the "and" and "or" keyword I wanted to return a new object:

SqlValueInt(4) and SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
SqlValueInt(5))

This is only possible for: +, -, /, *, >, >=, ...

Well... I have to live with the (binary) __and__, __or__ option and
the user has to write:

SqlValueInt(4) & SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
SqlValueInt(5))

Thanks for your input, but __nonzero__ is not of any help in this
case... I want to abuse the "magic" functions for some transformations
and not some evaluation.

Marco



From jurgenex at hotmail.com  Wed Oct 24 16:15:56 2007
From: jurgenex at hotmail.com (Jürgen Exner)
Date: Wed, 24 Oct 2007 20:15:56 GMT
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<COednczU5fsEPYHanZ2dnUVZ_oTinZ2d@comcast.com>
Message-ID: <0KNTi.2621$qo2.1247@trndny06>

Lew wrote:
> Xah Lee wrote:
>> i have written ... No coherent argument,

Actually the modified title is wrong. It should be

    The Xah Lee pestilence

Please see his posting history of off-topic random rambling for details.



Oh, and PLEASE


         +-------------------+             .:\:\:/:/:.
         |   PLEASE DO NOT   |            :.:\:\:/:/:.:
         |  FEED THE TROLLS  |           :=.' -   - '.=:
         |                   |           '=(\ 9   9 /)='
         |   Thank you,      |              (  (_)  )
         |       Management  |              /`-vvv-'\
         +-------------------+             /         \
                 |  |        @@@          / /|,,,,,|\ \
                 |  |        @@@         /_//  /^\  \\_\
   @x@@x@        |  |         |/         WW(  (   )  )WW
   \||||/        |  |        \|           __\,,\ /,,/__
    \||/         |  |         |      jgs (______Y______)
/\/\/\/\/\/\/\/\//\/\\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
==============================================================

jue 




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct  5 06:09:06 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 05 Oct 2007 12:09:06 +0200
Subject: where can I get a space supporting cgi written in python
In-Reply-To: <1191574369.396115.138020@g4g2000hsf.googlegroups.com>
References: <1191574369.396115.138020@g4g2000hsf.googlegroups.com>
Message-ID: <47060d2a$0$30531$426a74cc@news.free.fr>

yanpfei at gmail.com a ?crit :
> I'm studying python and very interested in cgi written in python, but
> i can't find a free host suporting it.who can tell where can i sign up
> for a free python host?
> I just wanna have a try, the space dont have to be very large, 20M or
> 50M is OK

FWIW, you don't *need* a web hosting for *trying* Python CGI - just
install Apache (or any other web server supporting CGI) on your machine.


From steve at holdenweb.com  Sun Oct  7 08:07:45 2007
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 07 Oct 2007 08:07:45 -0400
Subject: configure urllib.urlretrieve timeout
In-Reply-To: <1191749243.553918.235330@o80g2000hse.googlegroups.com>
References: <1191749243.553918.235330@o80g2000hse.googlegroups.com>
Message-ID: <feai6e$156$2@sea.gmane.org>

Abandoned wrote:
> Hi..
> I want to set 30 second urllib.urlretrieve timeout..
> Because if urllib.urlretrieve can't connect to page wait 1-2 hour...
> I download the images to my server with urlretrieve if you know the
> better way please help me.
> 
> I'm sorry my bad english..
> 
import socket
socket.setdefaulttimeout(30)

at the top of your program might help.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From sunburned.surveyor at gmail.com  Mon Oct 22 18:05:30 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: 22 Oct 2007 15:05:30 -0700
Subject: Automatic Generation of Python Class Files
In-Reply-To: <5o49cjFkqf0tU1@mid.uni-berlin.de>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<5o49cjFkqf0tU1@mid.uni-berlin.de>
Message-ID: <1193078822.632077.69650@e34g2000pro.googlegroups.com>

On Oct 22, 11:44 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > You wrote: " can't think of a single reason why you would ever want to
> > do this,
> > since your "list of method and property names" would be just as
> > verbose as just typing the actual python code."
>
> > I don't think I understand how this would be the same amount of
> > typing. Consider the following example that would generate a Monster
> > class file from an input text file (I only did one property and method
> > in generated class file.):
>
> > Contents of input text file:
>
> > [Name]
> > Fire Breathing Dragon
>
> > [Properties]
> > Strength
> > Scariness
> > Endurance
>
> > [Methods]
> > eatMaiden argMaiden
> > fightKnight argKnight
>
> Others have already given you reasons why that is a bad idea. Another
> one is this: how do you deal with changes to your generated classfile?
> It's complicated to ensure that you don't override modified code with
> generated.
>
> Diez- Hide quoted text -
>
> - Show quoted text -

Diez,

I didn't realize all of the shortcomings with my example until the
others responded. I was just trying to save myself some typing, but I
realize know the problem was my lack of understanding Python syntax.

I will consider myself schooled! :]

Scott Huey



From http  Fri Oct 12 04:17:35 2007
From: http (Paul Rubin)
Date: 12 Oct 2007 01:17:35 -0700
Subject: sorteddict PEP proposal [started off as orderedict]
References: <1190710402.481693.5110@50g2000hsm.googlegroups.com>
Message-ID: <7xprzk9274.fsf@ruckus.brouhaha.com>

Mark Summerfield <m.n.summerfield at googlemail.com> writes:
> Below is a PEP proposal for a sorteddict. ...

Is this proposal dead?  I'd been meaning to post some thoughts which I
still haven't gotten around to writing up, and am wondering whether to
keep it on my todo list.


From gagsl-py2 at yahoo.com.ar  Sat Oct  6 23:36:42 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 07 Oct 2007 00:36:42 -0300
Subject: Need help to understand garbage collection
References: <129e1cd10710061016y30db401bw6906b083c6f0cecf@mail.gmail.com>
Message-ID: <op.tzs5ng1px6zn5v@a98gizw.cpe.telecentro.net.ar>

En Sat, 06 Oct 2007 14:16:36 -0300, David Tremouilles  
<david.trem at gmail.com> escribi?:

> I would need help to understand how garbage collection work and how to
> "trace" objects...
> In the example below an object is created and deleted.

Not exactly: an object is created and bound to the name "a". Some code is  
executed... Later, the name "a" is removed; the object's reference count  
is decremented, but the object itself can only be removed when the r.c.  
goes to zero.

> Why in the second part of the example I do not see any object removed:

Because you still hold a reference to the object.

-- 
Gabriel Genellina



From ptmcg at austin.rr.com  Fri Oct  5 10:59:46 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Fri, 05 Oct 2007 07:59:46 -0700
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <13gcjeqbhmh152c@corp.supernews.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
Message-ID: <1191596386.885831.140290@22g2000hsm.googlegroups.com>

On Oct 5, 9:44 am, Grant Edwards <gra... at visi.com> wrote:
> On 2007-10-05, Steve Holden <st... at holdenweb.com> wrote:
>
> > I've just been told by the editors at Python Magazine that the first
> > issue is out.
>
> The first issue is issue number 10?
>
> That's a bit silly.
>
> --
> Grant Edwards                   grante             Yow! I can't decide which
>                                   at               WRONG TURN to make first!!
>                                visi.com            I wonder if BOB GUCCIONE
>                                                    has these problems!

Probably Issue 10 as in "issued in October, being the 10th month", so
this is more of an id than it is a sequential index number.  Just like
a social security number of 123-45-6789 does not mean you are the
123,456,789th human born since the beginning of the SS system.

But I grant that Issue number does have some connotation of sequence
to it, and if the next issue is something like 2 or 8, or really
anything other than 11, now THAT would be silly.  And I'm sure that in
the future, when people are trying to amass the complete set of Python
Magazines, they'll wonder why those issues 1-9 of the first volume are
so hard to come by.

But I suspect that, come January, we will see the release of Vol 2,
Issue 1.  Just an artifact of having the first issue come out in some
month other than January.

-- Paul



From winter at biotec.tu-dresden.de  Fri Oct 26 09:14:38 2007
From: winter at biotec.tu-dresden.de (Christof Winter)
Date: Fri, 26 Oct 2007 15:14:38 +0200
Subject: list (range) syntax
In-Reply-To: <mailman.433.1193274883.13605.python-list@python.org>
References: <pan.2007.10.24.22.44.28.712782@vscht.cz><1193268500.077940.182790@y27g2000pre.googlegroups.com>	<13hvq9cj6k9hf18@corp.supernews.com>
	<mailman.433.1193274883.13605.python-list@python.org>
Message-ID: <5oe7huFmel70U1@mid.dfncis.de>

Ryan Ginstrom wrote:
>> On Behalf Of Steven D'Aprano
>> Because in common English, counting starts at 1 and ranges 
>> normally include both end points (that is, it is a "closed" 
>> interval). If you say "I'll be away from the 4th to the 7th" 
>> and then turn up on the 7th, nearly everyone will wonder why 
>> you're back a day early.
> 
> Actually, I think this illustrates the point about confusion, because in the
> United States at least, "the 4th to the 7th" will not necessarily include
> the 7th. That's why it's common to use circumlocutions like "the 4th through
> the 7th" and "the 4th to the 7th, inclusive" when one wants to be sure.

[slightly OT]
A better example would be "10 to 12 people", which translates to "10, 11, or 12 
people" and hardly ever "10 or 11 people".


From joshbloom at gmail.com  Sun Oct  7 00:22:47 2007
From: joshbloom at gmail.com (Josh Bloom)
Date: Sat, 6 Oct 2007 21:22:47 -0700
Subject: How to create a file on users XP desktop
In-Reply-To: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
Message-ID: <d25b6e9a0710062122t66ffdc3dk2ded9a796c0db02e@mail.gmail.com>

I believe you can use something like '%USERPROFILE%\DESKTOP' as the path on
a windows machine to get to the current users desktop directory. I'm not
sure if the python open() command will expand that correctly, but give it a
shot.

-Josh


On 10/6/07, goldtech <goldtech at worldpost.com> wrote:
>
> Can anyone link me or explain the following:
>
> I open a file in a python script. I want the new file's location to be
> on the user's desktop in a Windows XP environment.  fileHandle = open
> (....., 'w' )  what I guess I'm looking for is an environmental
> variable that will usually be correct on most XP desktops and will
> work in the open statement. Or is there another way?
>
> Thanks
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071006/d0070e81/attachment.html>

From wizzardx at gmail.com  Fri Oct  5 07:57:41 2007
From: wizzardx at gmail.com (David)
Date: Fri, 5 Oct 2007 13:57:41 +0200
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
Message-ID: <18c1e6480710050457n7e25ecf4pdf1910c64181dddf@mail.gmail.com>

> I'm a seasoned Java programmer and quite a big fan of interfaces...
> i.e. The idea that if I make a number of distinct classes that
> implement interface X, I can pass them all as parameters to functions
> or whatnot that require an X object.
>
> Is there something similar in Python?
>

Python will probably be getting Abstract Base Classes at some point.

http://www.python.org/dev/peps/pep-3119/

For ABC in current versions of Python, see the "Can you implement
abstract classes in Python in 0 lines of code? Or 4?" question on this
page: http://norvig.com/python-iaq.html

David.


From deets at nospam.web.de  Sun Oct  7 11:57:31 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 07 Oct 2007 17:57:31 +0200
Subject: Override 'and' and 'or'
In-Reply-To: <1191771968.692976.318950@w3g2000hsg.googlegroups.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<13ghqmkl33t3ra4@corp.supernews.com>
	<1191768523.821775.178080@50g2000hsm.googlegroups.com>
	<1191771968.692976.318950@w3g2000hsg.googlegroups.com>
Message-ID: <5msdvbFf5b87U2@mid.uni-berlin.de>

Kay Schluehr schrieb:
> On Oct 7, 4:48 pm, Dekker <m.aschwan... at gmail.com> wrote:
>> On 7 Okt., 16:19, Steven D'Aprano <st... at REMOVE-THIS-
>>
>> cybersource.com.au> wrote:
>>> On Sun, 07 Oct 2007 13:52:15 +0000, Dekker wrote:
>>>> Is it possible to override 'and' and/or 'or'?
>>> Not without hacking the Python source code, in which case what you've got
>>> is no longer Python.
>>> Why do you want to do so?
>>> --
>>> Steven.
>> Well I think it is not possible what I wanted to achieve. By
>> overriding the "and" and "or" keyword I wanted to return a new object:
>>
>> SqlValueInt(4) and SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
>> SqlValueInt(5))
>>
>> This is only possible for: +, -, /, *, >, >=, ...
>>
>> Well... I have to live with the (binary) __and__, __or__ option and
>> the user has to write:
>>
>> SqlValueInt(4) & SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
>> SqlValueInt(5))
>>
>> Thanks for your input, but __nonzero__ is not of any help in this
>> case... I want to abuse the "magic" functions for some transformations
>> and not some evaluation.
>>
>> Marco
> 
> You can see what "and" and "or" are actually doing:
> 
> import dis
> dis.dis(lambda: x or y and z)
> 
>   1           0 LOAD_GLOBAL              0 (x)
>               3 JUMP_IF_TRUE            11 (to 17)
>               6 POP_TOP
>               7 LOAD_GLOBAL              1 (y)
>              10 JUMP_IF_FALSE            4 (to 17)
>              13 POP_TOP
>              14 LOAD_GLOBAL              2 (z)
>         >>   17 RETURN_VALUE
> 
> Here you can see nicely that they are not implemented as specialized
> opcodes but being compiled to jumps. This causes their lazy nature. If

Very cool, didn't know that.

Diez


From gagsl-py2 at yahoo.com.ar  Mon Oct  1 19:14:36 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 01 Oct 2007 20:14:36 -0300
Subject: Cross-platform time out decorator
References: <1190802115.585306.250400@o80g2000hse.googlegroups.com>
	<1190899882.702911.44670@w3g2000hsg.googlegroups.com>
	<87k5qc18gf.fsf@mulj.homelinux.net>
	<1190907553.425261.273400@w3g2000hsg.googlegroups.com>
	<87ejgjnarq.fsf@mulj.homelinux.net>
	<mailman.1188.1190926028.2658.python-list@python.org>
	<1191224078.930858.101280@o80g2000hse.googlegroups.com>
Message-ID: <op.tzjj6mnmx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 01 Oct 2007 04:34:38 -0300, Joel <joel.schaerer at gmail.com>  
escribi?:

> On Sep 27, 10:40 pm, "Chris Mellon" <arka... at gmail.com> wrote:

>> You can use ctypes and the Python API to raise a Python exception in
>> the thread.

> Could you point me to an example of how to do that?

Found this: <http://sebulba.wikispaces.com/recipe+thread2>
Looks promising but I've never tried it actually.

-- 
Gabriel Genellina



From Michael.Coll-Barth at VerizonWireless.com  Wed Oct 10 11:08:48 2007
From: Michael.Coll-Barth at VerizonWireless.com (Michael.Coll-Barth at VerizonWireless.com)
Date: Wed, 10 Oct 2007 11:08:48 -0400
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <NYOBGCEXSMTP20CcT7J001c6ad2@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
References: <NYOBGCEXSMTP20CcT7J001c6ad2@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
Message-ID: <20071010150907.5101E1E400E@bag.python.org>


> From: Grant Edwards
> 
> Anyway, I apologize for my attempt at humor, since it appears
> to have somehow offended.

Why apologize?  If someone doesn't like the name given to a piece of
software by its author(s), screw them.  If I find the software useful,
I'll use it.  Even if its called 'bouncingBetty'.  Actually, I might try
it, just because of the name, but you get my point.


The information contained in this message and any attachment may be
proprietary, confidential, and privileged or subject to the work
product doctrine and thus protected from disclosure.  If the reader
of this message is not the intended recipient, or an employee or
agent responsible for delivering this message to the intended
recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify me
immediately by replying to this message and deleting it and all
copies and backups thereof.  Thank you.



From harald.naumann at roundsolutions.com  Fri Oct 26 13:31:51 2007
From: harald.naumann at roundsolutions.com (Meff)
Date: Fri, 26 Oct 2007 10:31:51 -0700
Subject: pure python data compression (zip)
In-Reply-To: <87myu9lscl.fsf@querer.allevents.ch>
References: <mailman.371.1193145393.13605.python-list@python.org>
	<87myu9lscl.fsf@querer.allevents.ch>
Message-ID: <1193419911.032904.269190@50g2000hsm.googlegroups.com>

Hi Ren?,
What about to use the GE863-PRO? It comes with ARM9 inside, helps with
200MIPS and will run embedded Linux. We will launch a version with
connectors, SIM card holder and RF connector on http://www.telemobilityforum.com/eng/
in Monza next days.
I call it an embedded Linux with integrated GPRS module. By using the
embedded Linux you will able to use C code as well. Please feel free
to contact me and to ask for a starter kit with 30% discount.

Best regards

Harald Naumann
Technical Director

Round Solutions GmbH & Co KG
Im Steingrund 3 * D-63303 Dreieich * Germany
Tel:  +49 (0)6103 270440 Fax: +49 (0)27044199
Email: harald.naumann (at) roundsolutions.com
Homepage: www.roundsolutions.com




From dedalusenator at gmail.com  Thu Oct 18 09:43:52 2007
From: dedalusenator at gmail.com (dedalusenator at gmail.com)
Date: Thu, 18 Oct 2007 13:43:52 -0000
Subject: Need help in updating a global variable by a thread
In-Reply-To: <4716775d$0$27247$426a74cc@news.free.fr>
References: <1192646888.230515.223140@k35g2000prh.googlegroups.com>
	<4716775d$0$27247$426a74cc@news.free.fr>
Message-ID: <1192715032.975317.233440@z24g2000prh.googlegroups.com>

First off, apologies for posting code that had issues. My bad and
promise next time to do due diligence.

>learn about semaphores.

Definitely will.

>While this may not be an issue in this snippet

Even when more than one user concurrently launches this python
program? Let me read up on this like you suggested and then get back.

Thanks for all your help,
-Stephen
On Oct 17, 4:57 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> dedalusena... at gmail.com a ?crit :
>
>
>
>
>
> > Hello Folks,
>
> > My first posting here and I am a stuck in figuring out the exact way
> > to update a global variable from within a function that doesnt return
> > any value (because the function is a target of the thread and I dont
> > know how exactly return would work in such a case). I am sure I am
> > missing something very fundamental here. The essential pieces of my
> > code that cause the problem would be something like this:
> > ---------------------------------------------
> > lookuptab = {'1.9.7.3':'Bangkok','1.9.60.3':'Sydney'}
>
> > results = {}
>
> > for val in lookuptab.values():
> >     results[val]=0
>
> > def testt(loc):
> >        global results
> >        results[loc] = 1
> >        return results[loc]
>
> > for x in lookuptab.values():
> >       thread = threading.Thread(target=testt,args=(x))
> >       thread.start()
> > print results
> > -------------------------------------------------------
>
> "Would be" ?
>
> I had to fix a couple problems to get your code running (namely,
> importing threading and passing correct args to threading.Thread). Do
> yourself a favour: next time, take time to post *working* code.
>
> Anyway... Here's a (corrected) version with a couple prints here and
> there. I think the output is clear enough:
>
> import threading
> import time
>
> lookuptab = {'1.9.7.3':'Bangkok','1.9.60.3':'Sydney'}
> results = dict((val, 0) for val in lookuptab.values())
>
> def testt(loc):
>         global results
>         print "t-%s before: %s" % (loc,results)
>         results[loc] = 1
>         print "t-%s after: %s" % (loc,results)
>
> def main():
>        for x in lookuptab.values():
>              thread = threading.Thread(target=testt,args=(x,))
>              thread.start()
>
>        print "main - no sleep: %s" % results
>        time.sleep(1)
>        print "main - 1s later : %s" % results
>
> if __name__ == '__main__': main()
>
> And the output is:
>
> main - no sleep: {'Bangkok': 0, 'Sydney': 0}
> t-Bangkok before: {'Bangkok': 0, 'Sydney': 0}
> t-Bangkok after: {'Bangkok': 1, 'Sydney': 0}
> t-Sydney before: {'Bangkok': 1, 'Sydney': 0}
> t-Sydney after: {'Bangkok': 1, 'Sydney': 1}
> main - 1s later : {'Bangkok': 1, 'Sydney': 1}
>
> Now if I may give you an advice about threads and globals (or any other
> kind of shared state): learn about semaphores. While this may not be an
> issue in this snippet, race conditions is definitively something you
> want to avoid whenever possible and cleanly handle else.
>
> HTH- Hide quoted text -
>
> - Show quoted text -




From martin at v.loewis.de  Wed Oct  3 01:49:04 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 03 Oct 2007 07:49:04 +0200
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <47032D50.7080600@v.loewis.de>

> So, that leaves me wondering, why is Tkinter still getting so much
> focus in the Python standard library?
> 
> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?

The trick is very simple. Tkinter just *doesn't* get much focus. Very
few of the core developers actively work on it; I do so only once
every two years or so to merge all the patches that get contributed.

Regards,
Martin


From billLASTNAME at yahoo.com  Thu Oct  4 20:18:46 2007
From: billLASTNAME at yahoo.com (Frisbee®)
Date: Thu, 4 Oct 2007 20:18:46 -0400
Subject: Dear Hendryx and Leach
References: <470541a7$0$47118$892e7fe2@authen.yellow.readfreenews.net>
	<0llag31er762a2tsdfcs8t1lq9ms1ksghq@4ax.com>
	<QgeNi.259$sm6.23@nlpi069.nbdc.sbc.com>
	<Xns99BFC2342C5CDfnord23@216.168.3.44>
Message-ID: <upfNi.65$O6.38@bignews2.bellsouth.net>

"Jay Furr" <jfurr-nospam at nospam-furrs.org> wrote in message 
news:Xns99BFC2342C5CDfnord23 at 216.168.3.44...
> "MoParMaN" <scott.hendryx.clothes at sbcglobal.net> wrote in news:QgeNi.259
> $sm6.23 at nlpi069.nbdc.sbc.com:
>
>> I will not screw with the cardio doctor again after my stressless stress
>> test.  Jesus fucking christ, I thought I died for 45 seconds.
>
> Can I have your liver, then?

I take it this means you're good on spleens now? 




From dfabrizio51 at gmail.com  Sat Oct 27 15:31:32 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Sat, 27 Oct 2007 19:31:32 -0000
Subject: good example of C extension for Mac OS X
In-Reply-To: <1193511567.031547.245260@e34g2000pro.googlegroups.com>
References: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
	<1193511567.031547.245260@e34g2000pro.googlegroups.com>
Message-ID: <1193513492.210213.226900@y42g2000hsy.googlegroups.com>

On Oct 27, 2:59 pm, MrJean1 <MrJe... at gmail.com> wrote:
> There is a C template in file Modules/xxmodule.c in Python 2.5, maybe
> earlier.
>
> /Jean Brouwers
>
> On Oct 27, 8:11 am, chewie54 <dfabrizi... at gmail.com> wrote:
>
> > Hi All,
>
> > Does anyone now of a good example to use as template for a  C program
> > extension that needs to be built on the Mac OS X.
>
> > Thanks,

I have looked at the docs on the python.org but specifically looking
for
examples showing how to deal with linked lists and more about when to
use
references Py_INCREF and Py_DECREF

I didn't find Modules/xxmodule.c on my Mac OS X installation.


Thanks again



From duncan.booth at invalid.invalid  Thu Oct 18 05:25:55 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 18 Oct 2007 09:25:55 GMT
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
	<mailman.161.1192686567.13605.python-list@python.org>
	<13he60e4vc6i753@corp.supernews.com>
Message-ID: <Xns99CD690B6D6Dduncanbooth@127.0.0.1>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:

>> Note that the starting index is determined at creation time, not when
>> the iteration begins. So, if you create a reversed object over a list
>> containing 3 elements, the first returned element will be seq[2], 
then
>> seq[1], then seq[0]. It doesn't matter if you modify the list after
>> creating the reversed object but before starting the iteration: it 
will
>> start at seq[2] even if it's not the last item, and will silently 
stop
>> if seq[2] is not a valid index anymore.
> 
> You know, that's probably the *least* intuitive behaviour possible.
> 
> For reversed() to iterate over the input as it was at creation time is 
a 
> reasonable design choice; for it to iterate over the input as it is at 
> call time is also a reasonable design choice; but for it to iterate 
over 
> some unholy mutant melding of the sequence as-it-was and as-it-is is 
> simply bizarre. I hope it just fell out of the implementation and 
wasn't 
> a deliberate design choice.

You mean that you don't find it intuitive that it iterates through the 
indices that existed at creation time and returns the values as they are 
now? I'd have said that was the *most* intuitive behaviour.

The only other behaviours I would regard as intuitive for iteration over 
a mutating sequence would be to throw an exception either for mutating 
the sequence while the iterator exists or for using the iterator after a 
mutation.



From jorgen.maillist at gmail.com  Wed Oct  3 05:30:04 2007
From: jorgen.maillist at gmail.com (Jorgen Bodde)
Date: Wed, 3 Oct 2007 11:30:04 +0200
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <1191358854.210832.70630@n39g2000hsh.googlegroups.com>
References: <mailman.1402.1191343422.2658.python-list@python.org>
	<1191358854.210832.70630@n39g2000hsh.googlegroups.com>
Message-ID: <11e49df10710030230r75ef711co5e1bafc2848a762c@mail.gmail.com>

Hi there,

Thank you for confirming this, I did manage a work around. When
reading back the XML file, I strip it off it's whitespaces before I
parse it. Then when writing it back no excessive whitespaces are
appended. My best guess is that toprettyxml is not intelligently
handling whitespaces that are already there, and bluntly appends more
whitespaces to it, making it grow exponentially.

This is the snippet;

            f = open(filename, "rt")
            for line in f:
                s = line.strip(' \t\n')
                if s:
                    xmlstr += s + ' ' # space needed for spanning text nodes

And then I simply use parseString instead of parse. But honestly, I
think it is a bug, because the XML standard also says that whitespaces
before normal text should be ignored, and I do not see it back as text
when I read the node, so why preserve it and mess up the formatting in
the end?

Regards,
- Jorgen




On 10/2/07, kyosohma at gmail.com <kyosohma at gmail.com> wrote:
> On Oct 2, 11:43 am, "Jorgen Bodde" <jorgen.maill... at gmail.com> wrote:
> > Hi all,
> >
> > I parse an XML file, replace a node with a new one (like updating
> > cache) and write it back. Every write, new spaces are added. For
> > example, first read - update - write cycle;
> >
> > <var name="APPNAME" status="undefined">
> >      My First App
> > </var>
> >
> > Second cycle:
> >
> > <var name="APPNAME" status="undefined">
> >                  My First App
> > </var>
> >
> > Third cycle:
> >
> > <var name="APPNAME" status="undefined">
> >                                            My First App
> > </var>
> >
> > And this goes on. The node is one that is not touched in the XML, it
> > is simply written back after reading. I have the same with void spaces
> > in between the nodes, I managed to compensate that by stripping the
> > lines.
> >
> > I would like to use toprettyxml to make it user editable and viewable.
> > But this is really weird. How can I circumvent this behaviour?
> >
> > regards,
> > - Jorgen
>
> I had similar problems and ended up switching to the lxml package to
> solve the issue. I think you can do it with ElementTree too. Maybe
> somebody with more experience with the xml / minidom modules will show
> up soon.
>
> Mike
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From exarkun at divmod.com  Thu Oct 25 07:31:45 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Thu, 25 Oct 2007 07:31:45 -0400
Subject: Parallel insert to postgresql with thread
In-Reply-To: <1193310044.750654.157320@22g2000hsm.googlegroups.com>
Message-ID: <20071025113145.8162.1570679359.divmod.quotient.27577@ohm>

On Thu, 25 Oct 2007 04:00:44 -0700, Abandoned <besturk at gmail.com> wrote:
>Hi..
>I use the threading module for the fast operation.

For fast operation, avoid the threading module.  Here's a code sample:

    conn = connect(...)
    cursor = conn.cursor()
    cursor.executemany("INSERT INTO keywords (keyword) VALUES (%s)", datas)

Note that I also corrected your use of %, which was unnecessarily complex and
insecure.

Jean-Paul


From p at ulmcnett.com  Tue Oct 16 12:28:48 2007
From: p at ulmcnett.com (Paul McNett)
Date: Tue, 16 Oct 2007 09:28:48 -0700
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <e76aa17f0710152235j305aeccka6ec92b58d3ebf4b@mail.gmail.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>	<4713D47B.2070600@ulmcnett.com>	<e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>	<4713DAB4.3020904@ulmcnett.com>
	<e76aa17f0710152235j305aeccka6ec92b58d3ebf4b@mail.gmail.com>
Message-ID: <4714E6C0.3020306@ulmcnett.com>

Matthieu Brucher wrote:
>      > If this is the way of using sqlite, it is still cumbersome as a
>     lot of
>      > other classes that work on files can work on file-like (and isn't
>     it the
>      > whole point of Python ;) ?
> 
>     I don't think that sqlite can work on streams, or on file-like objects.
> 
> 
> 
> Obviously it cannot, but what are the reason it can't ?

I have no idea.


>     You could just save it as tempfile.mktemp(). I think the utility of this
>     function in this case outweighs the possibility that your routine will
>     coincidentally overwrite another file of the same name within the same
>     fraction of a second. The warning is dire, but when you think about it
>     in context it doesn't seem that bloody likely that there will be a
>     problem. ;)
> 
> 
> Well, I could, but in this case I have to delete the file myself, which 
> the whole point of the use of TemporaryFile.

Go with the flow dude! Unless you want to solve the issue by delving in 
to the source for pysqlite yourself so that it can work on file-like 
object, the extra os.unlink call doesn't seem to be a big deal.

Also, you are downloading the file off the Internet somewhere anyway. 
Either you work with that stream without creating a file (which we've 
already discovered isn't possible) or you save it to a file. Sure, it 
would be nice to use TemporaryFile(), but it shouldn't be a showstopper 
to use mktemp() an unlink() instead.


-- 
pkm ~ http://paulmcnett.com


From bj_666 at gmx.net  Tue Oct  2 02:43:56 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 2 Oct 2007 06:43:56 GMT
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
Message-ID: <5me7lcFd3t4eU1@mid.uni-berlin.de>

On Tue, 02 Oct 2007 19:34:29 +1300, Lawrence D'Oliveiro wrote:

> In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
> Kern wrote:
> 
>> Not all of the modules in a package are imported by importing the
>> top-level package.
> 
> You can't import packages, only modules.

Oh come on, this is unnecessary nitpicking.  Importing the module
`__init__` from a package using the name of the package is close enough to
justify the phrase "I import the package" IMHO.

Ciao,
	Marc 'BlackJack' Rintsch


From kw at codebykevin.com  Sun Oct  7 12:10:04 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Sun, 07 Oct 2007 12:10:04 -0400
Subject: tkinter question
In-Reply-To: <470904AC.9090100@codebykevin.com>
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com><op.tzpugxp2wepdt4@ericb.pragmadev><470629D1.2040404@codebykevin.com><op.tzp40yrqwepdt4@ericb.pragmadev>	<47063964.7000809@codebykevin.com>
	<mailman.1607.1191657100.2658.python-list@python.org>
	<470904AC.9090100@codebykevin.com>
Message-ID: <f1010$470904dd$4275d90a$3498@FUSE.NET>

Kevin Walzer wrote:

> Well, I guess it depends on your viewpoint. I find "pack" flexible 
> because it allows me to think in terms of top, bottom, right, and left 
> in terms of arranging UI elements--it's an elegant way to do it in my 
> view. I tend to use "grid" if I have, say, a window with several 
> preference items: a label, an entry field, and a button, all arranged in 
> rows. "grid" is better for stuff like that, I agree.
> 
> See http://www.codebykevin.com/blosxom/business/phynchronicity-new.png: 
> this is an application I develop. The layout is all handled by "pack" 
> and paned windows. Where you you use "grid" in a layout like this?
> 

That should be:

http://www.codebykevin.com/blosxom/business/phynchronicity-new.png

Sorry.


-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From llothar at web.de  Sun Oct 21 16:28:26 2007
From: llothar at web.de (llothar)
Date: Sun, 21 Oct 2007 13:28:26 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <PYqdnQWoU7yl6YbanZ2dnUVZ_qOknZ2d@comcast.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
	<471b64b2$0$90272$14726298@news.sunsite.dk>
	<1192980705.698811.128060@i38g2000prf.googlegroups.com>
	<PYqdnQWoU7yl6YbanZ2dnUVZ_qOknZ2d@comcast.com>
Message-ID: <1192998506.251127.172530@v29g2000prd.googlegroups.com>

On 21 Okt., 22:45, Lew <l... at lewscanon.com> wrote:

> Evidence is that TeX development is dead.

Exactly and Knuths only contribution to software development was the
theory of
"literate" programming. As i said for me algorithms are not software
development,
this is programming in the small (something left for coding apes), not
programming
in the large. There are no problems anymore with programming the
small, sure you
can try to develop Judy Arrays or another more optimized sorting
algorithm, but
this has no real world effect. It is theoretical computer science -
well a few
people seem to like this.

And as an evidence that this theory works ("literate" programming) -
there is no
easy prove about efficient workflow - was his TeX program where only
some parts
are handled like this. But drawing an conclusion from a "developement
dead"
project to other "in development" projects is just sorry: fucking
stupid.

Everythink in the real world says that "literate" programming is not
useable.
Sure if you are an academic guy you can do endless post-mortem
analysis you might
find this amazing but it is just as worthless for the real world as a
guy building
a copy of the Eiffel tower from burned matches - a pure hobby.




From lmierzej at o2.pl  Sun Oct 14 17:57:03 2007
From: lmierzej at o2.pl (Lukasz Mierzejewski)
Date: Sun, 14 Oct 2007 21:57:03 +0000 (UTC)
Subject: pydev code completion problem
References: <fetrk3$l27$3@nemesis.news.tpi.pl>
	<5nfcodFhieq6U3@mid.uni-berlin.de>
Message-ID: <feu3bf$8hs$1@nemesis.news.tpi.pl>

> I can confirm and it's something I would expect.  It is obvious to *you*
> that there is a `One` object in that list, but it would get very

Thank you for confirmation and your time!

> quickly very complicated for an IDE to keep track of objects if not
> even impossible.

I guess that you are right, but I wonder if there exists some
'tricks/magic' to overcome the fact that python is dynamically typed...

Tomorrow I will try Wing IDE...
But maybe someone use Komodo IDE or Wing IDE and can tell how they handle
situations like this? How works code completion in those IDE's?


From Brad.Johnson at ballardtech.com  Mon Oct  1 14:45:24 2007
From: Brad.Johnson at ballardtech.com (Brad Johnson)
Date: Mon, 1 Oct 2007 18:45:24 +0000 (UTC)
Subject: Reentrancy of Python interpreter
References: <mailman.1260.1191015110.2658.python-list@python.org>
	<1191051278.075475.128020@o80g2000hse.googlegroups.com>
Message-ID: <loom.20071001T184335-208@post.gmane.org>

 <bvukov <at> yahoo.com> writes:

> Looks like ( from PyThreadStage_Get error ) that you lost the GIL. You
> probably
> entered some C++ code and encapsulated you're work in the
> 
> Py_BEGIN_ALLOW_THREADS
> <code>
> Py_END_ALLOW_THREADS
> 
> but you're <code> is calling back the Python function, and you forgot
> to acquire
> back the GIL.
> 

I didn't explicitly allow for threads in Python. It should just be single
threaded. So I don't understand why I should have to acquire the GIL for the
second call into the interpreter, or how I lost the GIL in the first place.

Maybe I just need the second call to be placed into its own thread...?




From ldo at geek-central.gen.new_zealand  Wed Oct  3 06:12:17 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 03 Oct 2007 23:12:17 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
Message-ID: <fdvpu1$ejq$2@lust.ihug.co.nz>

In message <mailman.1404.1191345163.2658.python-list at python.org>, Robert
Kern wrote:

> Lawrence D'Oliveiro wrote:
>
>> In message <mailman.1379.1191301581.2658.python-list at python.org>, Robert
>> Kern wrote:
>> 
>>> Not all of the modules in a package are imported by importing the
>>> top-level package.
>> 
>> You can't import packages, only modules.
>> 
>>> os.path is a particularly weird case because it is just an alias to the
>>> platform-specific path-handling module; os is not a package.
>> 
>> os is a module, os.path is a variable within that module. That's all
>> there is to it.
> 
> Yes, but os.path is also module. That's why I said it was a weird case.

You can't have modules within modules. os.path isn't an exception--see
below.

> In [1]: import os
> 
> In [2]: type(os.path)
> Out[2]: <type 'module'>

On my Gentoo system:

    >>> import os
    >>> os.path
    <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>

It's just a variable that happens to point to the posixpath module.


From malaclypse2 at gmail.com  Thu Oct  4 15:30:26 2007
From: malaclypse2 at gmail.com (Jerry Hill)
Date: Thu, 4 Oct 2007 15:30:26 -0400
Subject: RegEx question
In-Reply-To: <496954360710041207u7317d0f8o4e560fcf42b1a692@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
	<496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>
	<1191515675.19400.39.camel@skinner.madoff.com>
	<496954360710040954j1f48a38du91895d55f1391f93@mail.gmail.com>
	<20071004170954.GA26162@sdf.lonestar.org>
	<496954360710041207u7317d0f8o4e560fcf42b1a692@mail.gmail.com>
Message-ID: <16651e80710041230h15c55a65t7d3cd1a977bee347@mail.gmail.com>

> As far as the dialect, I can't be sure. I am unable to find documentation
> for Comment Reflower and thus cannot figure out what type of regex it is
> using. What exactly do you mean by your question, "are you using raw
> strings?". Thanks for your response and I apologize for the lack of detail.

Comment Reflower appears to be a plugin for Visual Studio written in
C#.  As far as I can tell, it has nothing to do with Python at all.

A quick look at their sourceforge page
(http://sourceforge.net/projects/commentreflower/) doesn't show any
mailing lists or discussion groups.  Maybe try emailing the author
directly, or asking a C# language group about whatever the standard C#
regular expression library is.

-- 
Jerry


From zyzhu2000 at gmail.com  Mon Oct 29 10:47:52 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Mon, 29 Oct 2007 14:47:52 -0000
Subject: Handle Exceptions Inside List Comprehension
Message-ID: <1193669272.221535.281940@d55g2000hsg.googlegroups.com>

Hi All,

I am wondering if there is any way to handle exceptions inside list
comprehension. For example,

[f(x) for x in xs]

I want to skip the point if f(x) raises an exception. How can I do
that without totally removing the list comprehension?

Thanks,
Geoffrey



From carsten at uniqsys.com  Tue Oct 16 08:57:15 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Tue, 16 Oct 2007 08:57:15 -0400
Subject: [ANN] InformixDB-2.5 released
Message-ID: <1192539435.3387.1.camel@dot.uniqsys.com>

I am pleased to announce a new release of InformixDB, the DB-API 2.0 module
for connecting to IBM Informix database engines.

A lot has happened in the ten months since the last release:
- Compatibility with CSDK 3.00
- Ability to manually interrupt or automatically time out SQL execution
- Proper binding of boolean parameters in WHERE clauses
- Make version information about server and client available
- Various bug fixes

Get the goods at http://informixdb.sourceforge.net

Best regards,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From gagsl-py2 at yahoo.com.ar  Tue Oct 16 23:53:48 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 17 Oct 2007 00:53:48 -0300
Subject: Dynamic and lazy import
References: <1192540610.799241.236160@t8g2000prg.googlegroups.com>
Message-ID: <op.t0bo3yakx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 16 Oct 2007 10:16:50 -0300, Alexandre Badez  
<alexandre.badez at gmail.com> escribi?:

> I would like when I do something like to create a __init__ package's
> (here calle my_package) file witch make an action when we try to
> import something in this package...
>
> Quiet like __getattribute__ work for a class, I would like this kind
> of behaviour for a whole module or a package
>
> be a bit clearer:
> I've got a normal package/module/class (whathever) where I do
> something like:
>
> from my_package import my_module
>
> (but in the my_package I've got only:
> my_package / __init__.py
>
> And in the __init__ of my my_package something like __getattribute__
> (but for a module) that would return something for my_module
>
> I know, that I can do something like charging everything "before" in
> __init__ like:
> my_module = the_thing_I_want
>
> But I need it to be lazy (because I may have many module witch could
> be very awful...).

A module doesn't *have* to be a module... You can replace  
sys.modules['your_module_name'] with a suitable object. See this classical  
recipe from Alex Martelli:
<http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65207>

-- 
Gabriel Genellina



From __peter__ at web.de  Tue Oct 30 17:15:51 2007
From: __peter__ at web.de (Peter Otten)
Date: Tue, 30 Oct 2007 22:15:51 +0100
Subject: parsing ast nodes help to get callfunc values.
References: <1193772468.665769.245620@y42g2000hsy.googlegroups.com>
Message-ID: <fg86u6$bmh$01$1@news.t-online.com>

Glich wrote:

> If some one could show me how to use something called "visitor"? 

import compiler

module = """
def fun1():
    print "Hi"
    fun2()
    fun4()

def fun2():
    pass

def fun4():
    pass

fun1()
fun3(fun2())
"""

class Visitor:
    def visitCallFunc(self, node):
        print node.lineno, node.node.name
        for child in node.getChildNodes():
            compiler.walk(child, self)
                    
if __name__ == "__main__":
    ast = compiler.parse(module)
    visitor = Visitor()
    compiler.walk(ast, visitor)

> I did not understand the documentation and I am in need of more SIMPLE
> example code.

If my example is not sufficient I encourage you to take a look into the
source code of the compiler package.

Peter


From pavlovevidence at gmail.com  Thu Oct  4 11:27:15 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Thu, 04 Oct 2007 08:27:15 -0700
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
Message-ID: <1191511635.118779.124240@22g2000hsm.googlegroups.com>

On Oct 4, 11:11 am, Wojciech Gryc <wojci... at gmail.com> wrote:
> Hi,
>
> I recently started using Python and am extremely happy with how
> productive it's made me, even as a new user. I'm hoping to continue
> using the language for my research, and have come across a bit of a
> stumbling block.
>
> I'm a seasoned Java programmer and quite a big fan of interfaces...
> i.e. The idea that if I make a number of distinct classes that
> implement interface X, I can pass them all as parameters to functions
> or whatnot that require an X object.
>
> Is there something similar in Python?


Yes: you do it pretty much the same way you'd do it in Java, except
for two differences:
* leave out the "implements Interface" part
* don't actually create an Interface class

And then, voila!, you can write functions that can accept any class
that implements your interface.


> What I'd like to do is create a feature detection system for my work
> -- specifically, a general class / interface called "Feature" and then
> subclasses that implement functions like isFeaturePresent() in all of
> their different and unique ways. I'd love to hear how I can do this in
> Python.

Just define isFeaturePresent() in any class you want.  That's all you
have to do; any class that defines this method can be passed to any
function that invokes it, without having to "implement" or "subclass"
anything.

This is known as "duck typing" in Python lingo.


Carl Banks



From jayharvard1 at gmail.com  Thu Oct 11 07:57:27 2007
From: jayharvard1 at gmail.com (jayharvard1 at gmail.com)
Date: Thu, 11 Oct 2007 04:57:27 -0700
Subject: Is hostmonster any good for hosting python?
In-Reply-To: <1192037226.271956.262390@o80g2000hse.googlegroups.com>
References: <1192037226.271956.262390@o80g2000hse.googlegroups.com>
Message-ID: <1192103847.465144.44670@r29g2000hsg.googlegroups.com>

On Oct 10, 1:27 pm, walterbyrd <walterb... at iname.com> wrote:
> According to hostmonster's list of features, they do support python.
> Does anybody have any experience with hostmonster?

I'm using host monster to run my html-only site. However, I want to
add some python cgi, and I'd prefer to extend that to the Django
framework. I've had some issues getting cgi support. I've IM'd with a
tech rep and all they could tell me is that "yes, they do support
python cgi." From what I've seen, they don't have the mod_python
module installed for Apache. Without mod_python, I don't think you can
install Django. Not sure about other pythonic web frameworks.

Outside of the cgi support, host monster has been pretty good to work
with. They have a pretty slick control panel. Also, they use CentOs 4
and an older version of python.

HTH,
J



From __peter__ at web.de  Wed Oct 10 14:15:30 2007
From: __peter__ at web.de (Peter Otten)
Date: Wed, 10 Oct 2007 20:15:30 +0200
Subject: Yet another comparison of Python Web Frameworks
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191988646.640498.278860@19g2000hsx.googlegroups.com>
	<1192034225.641699.240200@r29g2000hsg.googlegroups.com>
Message-ID: <fej4s2$7gl$01$1@news.t-online.com>

Kay Schluehr wrote:

>> http://mdp.cti.depaul.edu/examples
> 
> The delivered sourcecode is syntactically broken. Tabs and whitespaces
> were mixed and when I open a file like gluon/global.py I find sections
> like this:
> 
> class Request(Storage):
>     """
>     defines the request object and the default values of its members
>     """
>     def __init__(self):
>     self.env=Storage()       # this line is incorrect syntax in Python

You may have configured your editor to use a tabwidth of four spaces
(Python always uses 8).

Peter


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 23:00:56 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 03:00:56 -0000
Subject: if instance exists problem ..
References: <mailman.142.1192660790.13605.python-list@python.org>
	<1192662735.463554.165450@e9g2000prf.googlegroups.com>
Message-ID: <13hdj38n7n3bv55@corp.supernews.com>

On Wed, 17 Oct 2007 23:12:15 +0000, Paul Hankin wrote:

> 'if x' doesn't test if x exists, it tests if x when cast to a bool is
> True.

To be pedantic:

Python doesn't have type casts. bool(x) doesn't cast x as a bool, it 
creates a brand new Boolean object from x.

Also, the "if x" test looks at x.__nonzero__() first, and if that method 
doesn't exist, it looks to see if x.__len__() returns 0 or not. See

http://docs.python.org/ref/customization.html


-- 
Steven.


From http  Sun Oct 28 15:26:19 2007
From: http (Paul Rubin)
Date: 28 Oct 2007 12:26:19 -0700
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
	<mailman.499.1193474381.13605.python-list@python.org>
	<13i6e9timmvuu51@corp.supernews.com>
	<7xbqajvyca.fsf@ruckus.brouhaha.com>
Message-ID: <7x7il7vy5g.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> c,m = divmod(200000*log(A*T*C*G,10), 1)
> print "%.3fe%d"%(m, int(c))

Barf.  Left as exercise: fix the error.




From arkanes at gmail.com  Tue Oct 30 08:01:58 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 30 Oct 2007 07:01:58 -0500
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193741531.543178.175900@o80g2000hse.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
	<1193691850.854354.301970@d55g2000hsg.googlegroups.com>
	<YYKdnQPGBbas87vanZ2dnUVZ_jmdnZ2d@comcast.com>
	<1193741531.543178.175900@o80g2000hse.googlegroups.com>
Message-ID: <4866bea60710300501n3197f6dcnad3ec8f111797a52@mail.gmail.com>

On Oct 30, 2007 5:52 AM, Fuzzyman <fuzzyman at gmail.com> wrote:
> On Oct 29, 11:35 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> > Fuzzyman wrote:
> > > On Oct 22, 6:43 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> > >> # Inherit from object. There's no reason to create old-style classes.
> >
> > > We recently had to change an object pipeline from new style classes to
> > > old style. A lot of these objects were being created and the *extra
> > > overhead* of new style classes was killing us. :-)
> >
> > I'm curious.  Was it memory or speed overhead that was the problem?
>
>
> It was speed overhead - I have to add a disclaimer that this is
> IronPython, but my understanding is that the situation is similar with
> CPython. Creating new style class instances is slower than for old
> style classes.
>

The obvious timeit test shows new-style classes being created in half
the time of old style ones. I certainly would not generalize to
CPython from IronPythons performance characteristics, especially with
something that's so dependent on both the .NET runtime and on the
details of IronPython integration as object creation.

C:\>python -m timeit -s "class C: pass" "c = C()"
1000000 loops, best of 3: 0.315 usec per loop

C:\>python -m timeit -s "class C(object): pass" "c = C()"
10000000 loops, best of 3: 0.175 usec per loop


From bh at izb.knu.ac.kr  Fri Oct 19 03:46:13 2007
From: bh at izb.knu.ac.kr (Byung-Hee HWANG)
Date: Fri, 19 Oct 2007 16:46:13 +0900
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
In-Reply-To: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
References: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
Message-ID: <1192779973.14981.36.camel@viola.izb.knu.ac.kr>

On Wed, 2007-10-17 at 21:15 -0700, Xah Lee wrote:
> Elisp Tutorial: HTML Syntax Coloring Code Block
> 
> Xah Lee, 2007-10
> 
> This page shows a example of writing a emacs lisp function that
> process a block of text to syntax color it by HTML tags. If you don't
> know elisp, first take a gander at Emacs Lisp Basics.
> 
> HTML version with color and links is at:
> http://xahlee.org/emacs/elisp_htmlize.html
> 
> ---------------------------------------
> THE PROBLEM
> 
> SUMMARY
> 
> I want to write a elisp function, such that when invoked, the block of
> text the cursor is on, will have various HTML style tags wrapped
> around them. This is for the purpose of publishing programing language
> code in HTML on the web.
> 
> DETAIL
> 
> I write a lot computer programing tutorials for several computer
> languages. For example: Perl and Python tutorial, Java tutorial, Emacs
> Lisp tutorial, Javascript tutorial. In these tutorials, often there
> are code snippets. These code need to be syntax colored in HTML.
> 
> For example, here's a elisp code snippet:
> 
> (if (< 3 2)  (message "yes") )
> 
> Here's what i actually want as raw HTML:
> 
> (<span class="keyword">if</span> (&lt; 3 2)  (message <span
> class="string">"yes"</span>) )
> 
> Which should looks like this in a web browser:
> 
> (if (< 3 2)  (message "yes") )
> 
> There is a emacs package that turns a syntax-colored text in emacs to
> HTML form. This is extremely nice. The package is called htmlize.el
> and is written (1997,...,2006) by Hrvoje Niksic, available at
> http://fly.srk.fer.hr/~hniksic/emacs/htmlize.el.
> 
> This program provides you with a few new emacs commands. Primarily, it
> has htmlize-region, htmlize-buffer, htmlize-file. The region and
> buffer commands will output HTML code in a new buffer, and the htmlize-
> file version will take a input file name and output into a file.
> 
> When i need to include a code snippet in my tutorial, typically, i
> write the code in a separate file (e.g. ?temp.java?, ?temp.py?), run
> it to make sure the code is correct (compile, if necessary), then,
> copy the file into the HTML tutorial page, inside a ?pre? block. In
> this scheme, the best way for me to utilize htmlize.el program is to
> use the ?html-buffer? command on my temp.java, then copy the htmlized
> output and paste that into my HTML tutorial file inside a ?pre? block.
> Since many of my tutorials are written haphazardly over the years
> before seeing the need for syntax coloration, most exist inside ?pre?
> tags already without a temp code file. So, in most cases, what i do is
> to select the text inside the ?pre? tag, paste into a temp buffer and
> invoke the right mode for the language (so the text will be fontified
> correctly), then do htmlize-buffer, then copy the html output, then
> paste back to replace the selected text.
> 
> This process is tedious. A tutorial page will have several code
> blocks. For each, i will need to select text, create a buffer, switch
> mode, do htmlize, select again, switch buffer, then paste. Many of the
> steps are not pure push-buttons operations but involves eye-balling.
> There are few hundred such pages.
> 
> It would be better, if i can place the cursor on a code block in a
> existing HTML page, then press a button, and have emacs magically
> replace the code block with htmlized version colorized for the code
> block's language. We proceed to write this function.
> 
> ---------------------------------------
> SOLUTION
> 
> For a elisp expert who knows how fontification works in emacs, the
> solution would be writing a elisp code that maps emacs's string's
> fontification info into html tags. This is what htmlize.el do exactly.
> Since it is already written, a elisp expert might find the essential
> code in htmlize.el. (the code is licensed under GPL) .
> 
> Unfortunately, my lisp experience isn't so great. I spent maybe 30
> minutes tried to look in htmlize.html in hope to find a function
> something like htmlize-str that is the essence, but wasn't successful.
> I figured, it is actually faster if i took the dumb and inefficient
> approach, by writing a elisp code that extracts the output from
> htmlize-buffer. Here's the outline of the plan of my function:
> 
>     * 1. Grab the text inside a <pre class="?lang?">...</pre> tag.
>     * 2. Create a new buffer. Paste the code in.
>     * 3. Make the new buffer ?lang? mode (and fontify it)
>     * 4. Call htmlize-buffer
>     * 5. Grab the (htmlized) text inside ?pre? tag in the htmlize
> created output buffer.
>     * 6. Kill the htmlize buffer and my temp buffer.
>     * 7. Delete the original text, paste in the new text.
> 
> To achieve the above, i decided on 2 steps. A: Write a function
> ?htmlize-string? that takes a string and mode name, and returns the
> htmlized string. B: Write a function ?htmlize-block? that does the
> steps of grabbing text and pasting, and calls ?htmlize-string? for the
> actual htmlization.
> 
> Here's the code of my htmlize-string function:
> 
> (defun htmlize-string (ccode mn)
> "Take string ccode and return htmlized code, using mode mn.\n
> This function requries the htmlize-mode.el by Hrvoje Niksic, 2006"
> (let (cur-buf temp-buf temp-buf2 x1 x2 resultS)
>     (setq cur-buf (buffer-name))
>     (setq temp-buf "xout-weewee")
>     (setq temp-buf2 "*html*") ;; the buffer that htmlize-buffer
> creates
> 
>     ; put the code in a new buffer, set the mode
>     (switch-to-buffer temp-buf)
>     (insert ccode)
>     (funcall (intern mn))
> 
>     (htmlize-buffer temp-buf)
>     (kill-buffer temp-buf)
>     (switch-to-buffer temp-buf2)
> 
>     ; extract the core code
>     (setq x1 (re-search-forward "<pre>"))
>     (setq x1 (+ x1 1))
>     (re-search-forward "</pre>")
>     (setq x2 (re-search-backward "</pre>"))
>     (setq resultS (buffer-substring-no-properties x1 x2))
>     (kill-buffer temp-buf2)
> 
>     (switch-to-buffer cur-buf)
>     resultS
> )
> )
> 
> The major part in this code is knowing how to create, switch, kill
> buffers. Then, how to set a mode. Lastly, how to grab text in a
> buffer.
> 
> Current buffer is given by ?buffer-name?. To create or switch buffer
> is done by ?switch-to-buffer?. Kill buffer is ?kill-buffer?. To
> activate a mode, the code is ?(funcall (intern my-mode-name))?. I
> don't know why this is so in detail, but it is interesting to know.
> 
> The grabbing text is done by locating the desired beginning and ending
> locations using re-search functions, and buffer-substring-no-
> properties for actually extracting the string.
> 
> Here, note the ?no-properties? in ?buffer-substring-no-properties?.
> Emacs's string can contain information called properties, which is
> essentially the fontification information.
> 
> Reference: Elisp Manual: Buffers.
> 
> Reference: Elisp Manual: Text-Properties.
> 
> Here's the code of my htmlize-block function:
> 
> (defun htmlize-block ()
>   "Replace the region enclosed by <pre> tag to htmlized code.
> For example, if the cursor somewhere inside the tag:
> 
> <pre cla ss=\"code\">
> codeXYZ...
> </pre>
> 
> after calling, the ?codeXYZ...? block of text will be htmlized.
> That is, wrapped with many <span> tags.
> 
> The opening tag must be of the form <pre cla ss=\"lang-str\">.
> The ?lang-str? determines what emacs mode is used to colorize
> the code.
> This function requires htmlize.el by Hrvoje Niksic."
> 
> (interactive)
> (let (mycode tag-begin styclass code-begin code-end tag-end mymode)
>   (progn
>     (setq tag-begin (re-search-backward "<pre class=\"\\([A-z-]+\\)
> \""))
>     (setq styclass (match-string 1))
>     (setq code-begin (re-search-forward ">"))
>     (re-search-forward "</pre>")
>     (setq code-end (re-search-backward "<"))
>     (setq tag-end (re-search-forward "</pre>"))
>     (setq mycode (buffer-substring-no-properties code-begin code-end))
>     )
>   (cond
>    ((equal styclass "elisp") (setq mymode "emacs-lisp-mode"))
>    ((equal styclass "perl") (setq mymode "cperl-mode"))
>    ((equal styclass "python") (setq mymode "python-mode"))
>    ((equal styclass "java") (setq mymode "java-mode"))
>    ((equal styclass "html") (setq mymode "html-mode"))
>     ((equal styclass "haskell") (setq mymode "haskell-mode"))
>    )
>   (save-excursion
>     (delete-region code-begin code-end)
>     (goto-char code-begin)
>     (insert (htmlize-string mycode mymode))
>     )
>   )
> )
> 
> The steps of this function is to grab the text inside a ?pre? block,
> call htmlize-string, then insert the result replacing text.
> 
> Originally, i wrote the code to grab text by inside plain ?<pre>...</
> pre>? tags, then use some heuristics to determine what language it is,
> then call htmlize-string with the mode-name passed to it. However,
> since my html pages already has the language information in the form
> of ?<pre class="?lang?">...</pre>? (for CSS reasons), so, now i search
> text by that form, and use the ?lang? part to determine a mode.
> 
> Emacs is beautiful.
> 
> Postscript:
> 
> The story given above is slightly simplified. For example, when i
> began my language notes and commentaries, they were not planned to be
> some systematic or sizable tutorial. As the pages grew, more quality
> are added in editorial process. So, a plain un-colored code inside
> ?pre? started to have ?language comment? strings colorized (e.g.
> ?<span class="cmt">#...</span>), by using a simple elisp code that
> wraps a tag on them, and this function is mapped to shortcut key for
> easy execution. As pages and languages grew, i find colorizing comment
> isn't enough, then i started to look for a syntax-coloring html
> solution. There are solutions in Perl, Python, PHP, but I find emacs
> solution best suites my needs in particular because it integrates with
> emacs's interactive nature, and my writing work is done in a
> accumulative, editorial process.
> 
> In the beginning i used htmlize-region and htmlize-buffer as they are
> for new code. Note that this is still a laborious process. Gradually i
> need to colorized my old code. The problem is that many already
> contain my own ?span class="cmt"? tags, and strings common in computer
> languages such as ?<=? have already been transformed into required
> html encoding ?&lt;=?. So, the elisp code will first ?un-htmlize?
> these in my htmlize-block code. But once all my existing code has been
> so newly colorized, the part of code to transform strings for un-
> htmlize is no longer necessary, so they are taken out in htmlize-block
> and resumes a cleaner state. Also, htmlize-block went thru many
> revisions over the year. Sometimes in recent past, i had one code
> wrapper for each language. For example, i had htmlize-me-perl, htmlize-
> me-python, htmlize-me-java, etc. The need for unification into a
> single coherent wrapper code didn't materialize. In general, it is my
> experience, in particular in writing elisp customization for emacs,
> that tweaking code periodically thru the year is practical, because it
> adapts to the constant changes of requirements, environment, work
> process. For example, eventually i might write my own htmlize.el, if i
> happen to need more flexibility, or if my elisp experience
> sufficiently makes the job relatively easy.
> 
> Also note: a whole-sale solution is to write a program, in say,
> Python, that process html files and replace proper sections by
> htmlized string. This is perhaps more efficient if all the existing
> html files are in some uniform format. However, i need to work on my
> tutorials on a case-by-case basis. In part, because, some pages
> contain multiple languages or contains pseudo-code that i do not wish
> colorized. (For example, some pages contains codes of the Mathematica?
> language. Mathematica code is normally done in Mathematica's
> mathematical typesetting capable ?front-end? IDE called ?Notebook? and
> is not ?syntax-colored? as such.)

+1 ;;
BTW, what is G2/1.0? Is that Emacs-like editor?

-- 
Byung-Hee HWANG <bh at izb.knu.ac.kr>
InZealBomb, Kyungpook National University, KOREA

"Godfather, Godfather, save me from death, I beg of you."
		-- Genco Abbandando, "Chapter 1", page 46


From gagsl-py2 at yahoo.com.ar  Sun Oct  7 00:29:13 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 07 Oct 2007 01:29:13 -0300
Subject: reliable unit test logging
References: <mailman.1331.1191237975.2658.python-list@python.org>
	<871wcfx83l.fsf@benfinney.id.au>
	<mailman.1384.1191310742.2658.python-list@python.org>
	<87odfhsv5x.fsf@benfinney.id.au> <4703A945.5000504@swsoft.com>
Message-ID: <op.tzs72zlax6zn5v@a98gizw.cpe.telecentro.net.ar>

En Wed, 03 Oct 2007 11:37:57 -0300, Vyacheslav Maslov <vmaslov at swsoft.com>  
escribi?:

> I have one more question related to logging module, not unit test. I use
> FileHandler to append information to file log, in fact location of log
> file depends on some external factor and is calculated during
> initialization. Furthermore i want to use configuration file because it
> is comfortable way. So i need way to define in configuration file some
> variable which should evaluated during logging system initialization, i
> try following way:
>
> [handler_hand02]
> class=FileHandler
> level=NOTSET
> formatter=form01
> args=(logFileDir+"myfile.log","a",)
> logFileDir is defined in scope of module which call
> logging.config.fileConfig()
>
> and it produces "name 'logFileDir' is not defined" exception. As i
> understand this happens because inside logging module variable
> logFileDir is not visible. How i can avoid this?

logging.config uses the ConfigParser class; ConfigParser has some  
interpolation mechanism.
I think this should work (but I've not tested it):

[handler_hand02]
class=FileHandler
level=NOTSET
formatter=form01
args=("%(logFileDir)s"+"myfile.log","a",)

and call it using logging.config.fileConfig({"logFileDir":  
"your/desired/path"})

-- 
Gabriel Genellina



From daniel.j.larsson at gmail.com  Sun Oct 14 23:13:48 2007
From: daniel.j.larsson at gmail.com (Daniel Larsson)
Date: Mon, 15 Oct 2007 05:13:48 +0200
Subject: Entering username & password automatically using urllib.urlopen
In-Reply-To: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
References: <1192333275.927370.83790@i13g2000prf.googlegroups.com>
Message-ID: <2bfa72fa0710142013l52b91a25pa66173c4092ae7a8@mail.gmail.com>

You form the URL thus:

http://<user>:<password>@<host>:<port>/<url-path>

This is defined in RFC 1738 <http://www.faqs.org/rfcs/rfc1738.html>

On 10/14/07, rodrigo <rodrigo.cr at gmail.com> wrote:
>
> I am trying to retrieve a password protected page using:
>
> get = urllib.urlopen('http://password.protected.url"').read()
>
> While doing this interactively, I'm asked for  the username, then the
> password at the terminal.
> Is there any way to do this non-interactively? To hardcode the user/
> pass into the script so I can get the page automatically?
>
> (This is not a cracking attempt, I am trying to retrieve a page I have
> legitimate access to, just doing it automatically when certain
> conditions are met.)
>
> Thanks,
>
> Rodrigo
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071015/91b75d6a/attachment.html>

From bcd at pvv.ntnu.no  Wed Oct  3 17:09:43 2007
From: bcd at pvv.ntnu.no (Bent C Dalager)
Date: Wed, 3 Oct 2007 21:09:43 +0000 (UTC)
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<85hcl8qaj7.fsf@lola.goethe.zz> <fe0q7a$e42$1@orkan.itea.ntnu.no>
	<Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d@insightbb.com>
Message-ID: <fe10en$hmk$1@orkan.itea.ntnu.no>

In article <Vq-dnfzSmOiOn5nanZ2dnUVZ_g6dnZ2d at insightbb.com>,
rjack  <rjack at com> wrote:
>Webster? WEBSTER. . . ?
>
>Whatever happened to the Oxford English Dictionary ?

It suffers from not being in my "dict" installation I suppose.

>Seems to me the English have always spoken the definitive
>English. . . that's why they call it ENGLISH.

Unfortunately, these days English almost always means American English
and if you want British English you have to specify that explicitly.

But I don't actually think that the difference is significant to the
current controversy surrounding the interpretation of the word "free".

Cheers
	Bent D
-- 
Bent Dalager - bcd at pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs


From carsten at uniqsys.com  Sun Oct 21 00:56:35 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Sun, 21 Oct 2007 00:56:35 -0400
Subject: Selection error...
In-Reply-To: <13hlk23shfc4qe0@corp.supernews.com>
References: <1192930118.501328.277540@i38g2000prf.googlegroups.com>
	<mailman.272.1192934933.13605.python-list@python.org>
	<13hlk23shfc4qe0@corp.supernews.com>
Message-ID: <20071021044901.M23541@uniqsys.com>

On Sat, 20 Oct 2007 21:06:31 -0700, Dennis Lee Bieber wrote
> On Sat, 20 Oct 2007 22:47:23 -0400, Carsten Haese <carsten at uniqsys.com>
> declaimed the following in comp.lang.python:
> 
> > Haven't we told you before not to use the % operator to fill values into
> > a query? Use parameter binding:
> > 
> > cursor.execute("SELECT id from templinks where url=%s", (URL,) )
> >
> 	And check the adapter documentation with regards to the placeholder
> it uses... It may just want a ? instead of %s

The OP uses psycopg2, which unfortunately uses %s parameter notation. But I
agree, it's worth noting that the parameter style may vary between different
DB-API implementations (until the next version of DB-API, when supporting at
least qmark and named parameter styles becomes mandatory, yay!).

--
Carsten Haese
http://informixdb.sourceforge.net



From besturk at gmail.com  Mon Oct  1 14:01:30 2007
From: besturk at gmail.com (Abandoned)
Date: Mon, 01 Oct 2007 11:01:30 -0700
Subject: Combine two dictionary...
In-Reply-To: <mailman.1357.1191260483.2658.python-list@python.org>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
	<mailman.1357.1191260483.2658.python-list@python.org>
Message-ID: <1191261690.056215.179920@57g2000hsv.googlegroups.com>

On 1 Ekim, 20:41, Carsten Haese <cars... at uniqsys.com> wrote:
> On Mon, 2007-10-01 at 10:24 -0700, Abandoned wrote:
> > Hi..
> > dict1={1: 4,  3: 5}... and 2 millions element
> > dict2={3: 3,  8: 6}... and 3 millions element
>
> > I want to combine dict1 and dict2 and i don't want to use FOR because
> > i need to performance.
>
> You'll have to be a bit more precise here about how and where you want
> to "combine". Should the result be a new dictionary or should it replace
> one of dict1 or dict2? You're also not saying how you want conflicts
> between dict1 and dict2 should be resolved. For example, both dict1 and
> dict2 say something about the key 3. One says 5, the other says 3.
> Should the combined dict say 3 or 5 or (3,5) or maybe even 4?
>
> Also, based on your earlier posts from today, I'm wondering if those
> dicts come from executing SQL queries. If so, you might want to consider
> combining the results in SQL (using a UNION query) instead of combining
> them in Python.
>
> --
> Carsten Haesehttp://informixdb.sourceforge.net

I want to total score..
For example
> > dict1={1: 4,  3: 5}... and 2 millions element
> > dict2={3: 3,  8: 6}... and 3 millions element

result should be dict3={1:4, 3:8, 8:6}



From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 29 16:12:02 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 21:12:02 +0100
Subject: SQLite3; weird error
In-Reply-To: <1193657924.375787.287740@o80g2000hse.googlegroups.com>
References: <1193657924.375787.287740@o80g2000hse.googlegroups.com>
Message-ID: <47263ec0$0$31442$426a34cc@news.free.fr>

TYR a ?crit :
> Has anyone else experienced a weird SQLite3 problem?
> 
> Going by the documentation at docs.python.org, the syntax is as
> follows:
> foo = sqlite3.connect(dbname) creates a connection object representing
> the state of dbname and assigns it to variable foo. If dbname doesn't
> exist, a file of that name is created.
> 
> To do anything with it, you then need to create a cursor object by
> calling foo's method cursor (bar = foo.cursor).

You actually want :

bar = foo.cursor()

In Python, the parens are not optional when it comes to calling 
functions - in fact, parens *are* the call operator. Without them, you 
don't call the function (or method), but retrieve a reference to it.

> 
> You can now pass an SQL query or command to the DB by calling the
> cursor object's method execute() with the SQL query as a quoted
> statement.
> 
> (bar.execute("SELECT FROM squid WHERE squamous=True")
> 
> And then do other stuff.
> 
> Fine. When I call the cursor object, though, I get an AttributeError;
> ('builtinfunction_or_method object has no attribute 'execute')

Indeed. cf above.


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Oct 20 06:50:37 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 20 Oct 2007 12:50:37 +0200
Subject: Need some help with my first Twisted program
References: <mailman.224.1192826328.13605.python-list@python.org>
Message-ID: <5nu4rtFjfiluU1@mid.individual.net>

McCann, Brian wrote:

> I posted this to the Twisted list...figured I'd try here too.

Didn't you get an answer? The cracks for special topics are usually
there.
 
> to work right.  Looking through the API docs I found
> "connectionLost()", which I put in my protocol class (EchoProtocol
> in the example), but it's
> never getting called.  Here's my connectionLost def:
> 
>     def connectionLost(self,reason):
>         print "lost:%s" %reason
>         self.serialServerSocket.close()
>         self.alive = False
>         self.serialSocketReadThread.join()
> 
> Can someone please tell me what I'm doing wrong?

No, since the definition of a never called function won't help.

Try the following standard strategy: Make a copy of your project and
reduce it (removing functionality) until the error doesn't appear
anymore. If it does *not* vanish, post your short code here or in
the Twisted list.

Regards & happy hunting,


Bj?rn

-- 
BOFH excuse #366:

ATM cell has no roaming feature turned on, notebooks can't connect



From tjreedy at udel.edu  Mon Oct  1 23:36:23 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 1 Oct 2007 23:36:23 -0400
Subject: Python 3.0 migration plans?
References: <mailman.1195.1190936289.2658.python-list@python.org><1191083377.191358.303320@d55g2000hsg.googlegroups.com>
	<1191274954.862049.299800@r29g2000hsg.googlegroups.com>
Message-ID: <fdsebm$52l$1@sea.gmane.org>


"NickC" <ncoghlan at gmail.com> wrote in message 
news:1191274954.862049.299800 at r29g2000hsg.googlegroups.com...
| When 3.0b1 comes out is probably the time to start looking seriously
| at conversion. Until then, major course corrections (like PEP 3137)
| will still be a possibility. Before the first beta, the best idea is
| probably just to keep a watchful eye on the development to see if you
| spot any show-stopper problems that might lead to the need for such a
| course correction :)

It was people who did that, partly by trying to convert or write small 
snippets of code, who found problems and persuaded Guido that PEP 3137 was 
needed.





From mail at timgolden.me.uk  Thu Oct 18 09:50:20 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Thu, 18 Oct 2007 14:50:20 +0100
Subject: Capturing OutputDebugString information in python
In-Reply-To: <1192715025.231413.32830@e34g2000pro.googlegroups.com>
References: <1192566889.524862.167030@k35g2000prh.googlegroups.com>	<mailman.115.1192611992.13605.python-list@python.org>
	<1192715025.231413.32830@e34g2000pro.googlegroups.com>
Message-ID: <4717649C.5040506@timgolden.me.uk>

danbrotherston wrote:
> <snip>
> 
> Wow, more of a response than I expected, thanks very much for the
> research.  While not related to the mutex, the problem did appear to
> be permission related.  For the record, on windows XP
> 
> import sys
> import mmap
> import win32event
> 
> buffer_ready = win32event.CreateEvent (None, 0, 0,
> "DBWIN_BUFFER_READY")
> data_ready = win32event.CreateEvent (None, 0, 0, "DBWIN_DATA_READY")
> buffer = mmap.mmap (0, 4096, "DBWIN_BUFFER", mmap.ACCESS_WRITE)
> 
> 
> win32event.SetEvent (buffer_ready)
> 
> 
> while win32event.WaitForSingleObject (data_ready, 1000) ==
> win32event.WAIT_TIMEOUT:
>    print "Timed out"
> 
> print "Was signaled"
> 
> appears to work.  Write access appears to be required for the buffer
> (which I can read and get useful data from:
> 
> print buffer.read(4)
> print buffer.read(4092)
> 
> and no security object.  I wasn't the one who figured this out, so I'm
> really not sure why it works...but it seems to.

Excellent! Do you mind if I add a solution based on this as a
How-Do-I? to my site [1] (suitably accredited, of course)?

TJG

[1] http://timgolden.me.uk/python/win32_how_do_i.html


From nils.lastein at gmail.com  Fri Oct 19 07:37:24 2007
From: nils.lastein at gmail.com (Nils)
Date: Fri, 19 Oct 2007 11:37:24 -0000
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <pan.2007.10.19.08.58.35@REMOVE.THIS.cybersource.com.au>
References: <mailman.201.1192778546.13605.python-list@python.org>
	<pan.2007.10.19.08.58.35@REMOVE.THIS.cybersource.com.au>
Message-ID: <1192793844.946920.194930@q3g2000prf.googlegroups.com>

On Oct 19, 10:58 am, Steven D'Aprano
<ste... at REMOVE.THIS.cybersource.com.au> wrote:
> On Fri, 19 Oct 2007 01:24:09 +0200, stef mientki wrote:
> > hello,
>
> > I generate dynamically a sequence of values, but this "sequence" could
> > also have length 1 or even length 0.
>
> > So I get some line in the form of:
> >       line = '(2,3,4)'
> >       line = ''
> >       line = '(2)'
> > (in fact these are not constant numbers, but all kind of integer
> > variables, coming from all over the program, selected from a tree, that
> > shows all "reachable" variables)
>
> > So in fact I get the value from an exec statement, like this
> >       exec 'signals = ' + line
>
> And then, one day, somebody who doesn't like you will add the following
> to your input data:
>
> "0; import os; os.system('rm # -rf /')"
>
> [ Kids: don't try this at home! Seriously, running that command will be
> bad for your computer's health. Or at least it would, if I hadn't put a
> spike in it. ]
>
> Don't use exec in production code unless you know what you're doing. In
> fact, don't use exec in production code.
>
> > Now I want to iterate over "signals", which works perfect if there are 2
> > or more signals,
> > but it fails when I have none or just 1 signal.
> >     for value in signals :
> >         do something
>
> No, I would say it already failed before it even got there.
>
> >>> line = ''
> >>> exec 'signals = ' + line
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "<string>", line 1
>     signals =
>             ^
> SyntaxError: unexpected EOF while parsing
>
> This is the right way to deal with your data:
>
> input_data = """  (2, 3  , 4)
>
>   (2)
> (3,4,5)
> ( 1, 2,3)
> """
>
> for line in input_data.split('\n'):
>     line = line.strip().strip('()')
>     values = line.split(',')
>     for value in values:
>         value = value.strip()
>         if value:
>             print(value)
>
> > As this meant for real-time signals, I want it fast, so (I think) I
> > can't afford extensive testing.
>
> Don't guess, test it and see if it is fast enough. Some speed ups:
>
> If you're reading from a file, you can just say: "for line in file:"
> instead of slurping the whole lot into one enormous string, then
> splitting over newlines.
>
> If you can guarantee that there is no extra whitespace in the file, you
> can change the line
>
>     line = line.strip().strip('()')
>
> to the following:
>
>     line = line.strip('\n()')
>
> and save a smidgen of time per loop. Likewise, drop the "value =
> value.strip()" in the inner loop.
>
> --
> Steven.

why not:
>>> for i in eval('(1,2,3)'):
...     print i
1
2
3



From martin at marcher.name  Sat Oct 27 12:07:44 2007
From: martin at marcher.name (Martin Marcher)
Date: Sat, 27 Oct 2007 18:07:44 +0200
Subject: os.walk and recursive deletion
Message-ID: <5fa6c12e0710270907x6ff279d8s6cd894b293580b97@mail.gmail.com>

Hello,

I'm playing around with os.walk and I made up del_tree(path) which I
think is correct (in terms of the algorithm, but not as python wants
it :)).

As soon as some directory is deleted the iterator of os.walk chokes.
OK that is somehow clear to me as it can't be valid anymore since it
can't go to the just deleted directory but it is in the iterator.

I generated the test data with (bash, don't know of other shell
expansion features)

# root="test"
# mkdir $root
# mkdir -p
# $root/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}
# touch $root/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{0,1,2,3,4,5,6,7,8,9}
# touch $root/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}/{0,1,2,3,4,5,6,7,8,9}

Here goes the script, as far as I tested it it runs fine in test mode.
Now that is just use the print statements like attached below. as soon
as os.rmdir and os.unlink are involved the iterator chokes. How do I
get around that, or what should I use to be able to recursively delete
everything under a certain subdir?

#--snip
import sys
import os
import unittest

def del_tree(path):
   walker = os.walk(path)
   for entry in walker:
      cwd = entry[0]
      subdirs = entry[1]
      files = entry[2]
      print "Checking directory: %s" %(cwd, )
      if files:
         for file in files:
            file = os.path.join(cwd, file)
            print "The file is now: %s" % (file, )
            #os.unlink(file)
         print "OK directory %s has no more files, checking for
subdirs..." % (cwd, )
      else:
         print "OK directory %s NEVER HAD FILES, checking for
subdirs..." % (cwd, )
      if not subdirs:
         print "We can delete: %s" % (cwd, )
         #os.rmdir(cwd)
      else:
         for subdir in subdirs:
            subdir = os.path.join(cwd, subdir)
            print "We need to recurse into: %s" % (subdir, )
            del_tree(subdir)
   #os.rmdir(path)
   print "Removing: %s" % (path, )
#--snap
-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From bignose+hates-spam at benfinney.id.au  Sat Oct  6 11:02:34 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sun, 07 Oct 2007 01:02:34 +1000
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
	<1191616293.965858.43000@d55g2000hsg.googlegroups.com>
	<7xd4vtw6b0.fsf@ruckus.brouhaha.com>
	<871wc9qblg.fsf@benfinney.id.au> <87wsu1ouxl.fsf@benfinney.id.au>
	<7xve9lymy8.fsf@ruckus.brouhaha.com>
Message-ID: <87sl4op9px.fsf@benfinney.id.au>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:

> Ben Finney <bignose+hates-spam at benfinney.id.au> writes:
> > Or even better:
> > 
> >     def test_raises_good_exception():
> >         try:
> >             thingy()
> 
> Well if we're grading on style, maybe you really want to name the
> function 'test_thingy' instead of 'test_raises_good_exception'.

The function is a test case. It should be named for what specific case
it's testing.

A function named "test_thingy" (given the code unit is a function
named "thingy") would be some generic "do *all* the tests for
thingy". That's not a test case; perhaps it's the name of the unit
test module for "thingy".

-- 
 \     "I must have a prodigious quantity of mind; it takes me as much |
  `\          as a week sometimes to make it up."  -- Mark Twain, _The |
_o__)                                                Innocents Abroad_ |
Ben Finney


From deets at nospam.web.de  Wed Oct 24 06:46:57 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 24 Oct 2007 12:46:57 +0200
Subject: trying to remember how to do inline code "testing"
References: <471f2243$0$514$5a6aecb4@news.aaisp.net.uk>
Message-ID: <5o8m51Flqaf5U1@mid.uni-berlin.de>

Alex Hunsley wrote:

> I can remember Python having a feature which allowed you to add some
> simple tests to your code, something like adding console output to your
> actual python script, like so:
> 
> 
>  >>> 1+1
> 2
>  >>> 2*7
> 14
> 
> 
> ... then python would actually run these queries and check that the
> expected results occurred.
> I can't find the docs for this feauture anywhere, but I'm certain I
> didn't imagine this one!
> Can anyone give me a reference?

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

Diez


From allen.fowler at yahoo.com  Mon Oct 15 20:36:42 2007
From: allen.fowler at yahoo.com (allen.fowler)
Date: Mon, 15 Oct 2007 17:36:42 -0700
Subject: Simple HTML template engine?
In-Reply-To: <iSCQi.45164$RX.32456@newssvr11.news.prodigy.net>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<iSCQi.45164$RX.32456@newssvr11.news.prodigy.net>
Message-ID: <1192495002.451268.168730@q5g2000prf.googlegroups.com>

On Oct 15, 1:26 am, John Nagle <na... at animats.com> wrote:
> allen.fowler wrote:
> > Hello,
>
> > Can anyone recommend a simple python template engine for generating
> > HTML that relies only on the Pyhon Core modules?
>
> > No need for caching, template compilation, etc.
>
> > Speed is not a major issue.
>
> > I just need looping and conditionals. Template inheritance would be a
> > bonus.
>
>      HTMLTemplate is a minimal system for that sort of thing.
> It doesn't drag in some big "framework".
>
>                                         John Nagle


This look exactly like what I need.

Google first led me to the "HTML::Template" perl library.

But now i've got the right one at: http://freespace.virgin.net/hamish.sanderson/htmltemplate.html

Thank you.



From bbound at gmail.com  Fri Oct 12 19:37:43 2007
From: bbound at gmail.com (bbound at gmail.com)
Date: Fri, 12 Oct 2007 23:37:43 -0000
Subject: Cantankerous trolliness ad infinitum,
	was: Re: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <5n3fp4Ffvt8mU1@mid.dfncis.de>
References: <87tzt3ihev.fsf@kobe.laptop>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
	<1191978311.987341.271000@r29g2000hsg.googlegroups.com>
	<5n3fp4Ffvt8mU1@mid.dfncis.de>
Message-ID: <1192232263.239129.154870@v29g2000prd.googlegroups.com>

On Oct 10, 4:11 am, Matthias Buelow <m... at incubus.de> wrote:
>
> Is this some sport of yours to constantly create new gmail accounts and
> spam Usenet?

I am not a spammer. You, however, *are* a liar.

[snip remaining insults]
[correct newsgroups: header after attempted hijacking to make my
response disappear]



From Shawn at Milochik.com  Tue Oct 23 10:42:37 2007
From: Shawn at Milochik.com (Shawn Milochik)
Date: Tue, 23 Oct 2007 10:42:37 -0400
Subject: Regular Expression
In-Reply-To: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
References: <1193092178.791023.163840@v29g2000prd.googlegroups.com>
Message-ID: <2dc0c81b0710230742g6a327a39y2e2bb5c4eb7662de@mail.gmail.com>

On 10/22/07, patrick.waldo at gmail.com <patrick.waldo at gmail.com> wrote:
> Hi,
>
> I'm trying to learn regular expressions, but I am having trouble with
> this.  I want to search a document that has mixed data; however, the
> last line of every entry has something like C5H4N4O3 or CH5N3.ClH.
> All of the letters are upper case and there will always be numbers and
> possibly one .
>
> However below only gave me none.
>
> import os, codecs, re
>
> text = 'C:\\text_samples\\sample.txt'
> text = codecs.open(text,'r','utf-8')
>
> test = re.compile('\u+\d+\.')
>
> for line in text:
>     print test.search(line)
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


I need a little more info. How can you know whether you're matching
the text you're going for, and not other data which looks similar? Do
you have a specific field length? Is it guaranteed to contain a digit?
Is it required to start with a letter? Does it always start with 'C'?
You need to have those kinds of rules in mind to write your regex.

Shawn


From kyosohma at gmail.com  Tue Oct 30 09:06:52 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 30 Oct 2007 13:06:52 -0000
Subject: python in academics?
In-Reply-To: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
References: <1193715569.261522.219520@i13g2000prf.googlegroups.com>
Message-ID: <1193749612.124199.172020@o38g2000hse.googlegroups.com>

On Oct 29, 10:39 pm, sandipm <sandip.m... at gmail.com> wrote:
> seeing posts from students on group. I am curious to know, Do they
> teach python in academic courses in universities?
>
> in undergrad comp science courses,  We had scheme language as scheme
> is neat and beautiful language to learn programming. We learnt other
> languages ourselve with basics set right by scheme..
>
> sandip

They didn't at either of the colleges I went to. They seemed to be
focused on C++, COBOL and Visual Basic. All are used all over the
place, but only Visual Basic is easy for complete newbs. I hope more
colleges adopt Python or Ruby as a teaching language, but I don't
think it's a good idea to ignore COBOL or C++ since their used so
extensively in big business.

Mike



From timr at probo.com  Sun Oct 14 00:26:54 2007
From: timr at probo.com (Tim Roberts)
Date: Sun, 14 Oct 2007 04:26:54 GMT
Subject: Error on base64.b64decode() ?!
References: <1192201153.082875.45190@i13g2000prf.googlegroups.com>
	<mailman.129.1192201749.927.python-list@python.org>
	<1192286068.498618.245970@k35g2000prh.googlegroups.com>
Message-ID: <1h63h3117p88rvr1f889umdjadh3jb5fi7@4ax.com>

Christoph Krammer <redtiger84 at googlemail.com> wrote:

>On 12 Okt., 17:09, Jean-Paul Calderone <exar... at divmod.com> wrote:
>> If you get an incorrect padding error, try appending a "=" and decoding
>> again.  If you get the error again, try appending one more "=".  If it
>> still doesn't work, then you might be out of luck.
>
>This seems to work in some cases, but not all. Whats the deal with
>this adding of "="? Is there an implementation error in python, or are
>other implemenations of base64 more robust then they have to be?

The base64 algorithm converts 3 incoming bytes to 4 encoded bytes.  When
you decode base64, the input string MUST be a multiple of 4 bytes.  Equal
signs are used to pad the strings to 4n bytes.

The web site you used might be doing that alignment for you.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From jcd at sdf.lonestar.org  Fri Oct  5 12:17:27 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Fri, 5 Oct 2007 12:17:27 -0400
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <13gcogrm9uloj4b@corp.supernews.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
	<mailman.1586.1191596681.2658.python-list@python.org>
	<13gcogrm9uloj4b@corp.supernews.com>
Message-ID: <20071005161727.GB27592@sdf.lonestar.org>

On Fri, Oct 05, 2007 at 04:11:07PM -0000, Grant Edwards wrote regarding Re: Python Magazine: Issue 1 Free!:
> 
> On 2007-10-05, Steve Holden <steve at holdenweb.com> wrote:
> >>
> >>> I've just been told by the editors at Python Magazine that the
> >>> first issue is out.
> >> 
> >> The first issue is issue number 10?
> >> 
> >> That's a bit silly.
> >
> > It's the October edition. They obviously decided to make sure
> > the month numbering was consistent across the volumes.
> 
> I presumed that was the reasoning. It just seems
> counter-intuitive (and sort of un-Pythonic) to start numbering
> a sequence of objects at 10. ;)
> 

Well, it's also unpythonic to start numbering a sequence at 1, but it's clearly the right thing to do in this case.

Cheers,
Cliff


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 25 13:53:54 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 25 Oct 2007 17:53:54 -0000
Subject: Delete all not allowed characters..
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
	<pan.2007.10.25.15.42.34.428907@vscht.cz>
Message-ID: <13i1m1idi8f2r46@corp.supernews.com>

On Thu, 25 Oct 2007 17:42:36 +0200, Michal Bozon wrote:

> the list comprehension does not allow "else", but it can be used in a
> similar form:
> 
> s2 = ""
> for ch in s1:
>     s2 += ch if ch in allowed else " "
> 
> (maybe this could be written more nicely)

Repeatedly adding strings together in this way is about the most 
inefficient, slow way of building up a long string. (Although I'm sure 
somebody can come up with a worse way if they try hard enough.)

Even though recent versions of CPython have a local optimization that 
improves the performance hit of string concatenation somewhat, it is 
better to use ''.join() rather than add many strings together:

s2 = []
for ch in s1:
    s2.append(ch if (ch in allowed) else " ")
s2 = ''.join(s2)

Although even that doesn't come close to the efficiency and speed of 
string.translate() and string.maketrans(). Try to find a way to use them.

Here is one way, for ASCII characters.

allowed = "abcdef"
all = string.maketrans('', '')
not_allowed = ''.join(c for c in all if c not in allowed)
table = string.maketrans(not_allowed, ' '*len(not_allowed))
new_string = string.translate(old_string, table)


-- 
Steven.


From DustanGroups at gmail.com  Mon Oct 22 07:10:32 2007
From: DustanGroups at gmail.com (Dustan)
Date: Mon, 22 Oct 2007 11:10:32 -0000
Subject: calling a function from string
In-Reply-To: <ffhvbm$10s$1@nemesis.news.tpi.pl>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
	<mailman.314.1193048742.13605.python-list@python.org>
	<ffhvbm$10s$1@nemesis.news.tpi.pl>
Message-ID: <1193051432.450766.220640@v23g2000prn.googlegroups.com>

On Oct 22, 5:46 am, Jarek Zgoda <jzg... at o2.usun.pl> wrote:
> Do not use eval(). Not only it's deprecated, it's also unsafe.

I don't think it's deprecated; it doesn't say so:
http://docs.python.org/lib/built-in-funcs.html#l2h-25



From petersm at cvn65.navy.mil  Tue Oct  2 06:47:55 2007
From: petersm at cvn65.navy.mil (Peters, Matthew J. ET3)
Date: Tue, 2 Oct 2007 06:47:55 -0400
Subject: LastWriteTime in windows registry
Message-ID: <EF20B7056AB35C49BDF6A6D6D5FEF3D103F1AE@cvn65ucsex2.cvn65.navy.mil>

 
Hi,
            I'm looking for a way to read the lastwritetime property of
a windows registry key.  I've tried searching google a ton, but
lastwritetime also applies to files as well, so search results are never
what I intended.  I found the function in perl, but the program is in
python and I would much rather stick to python using the win32 module.
Thanks.
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071002/380fbce3/attachment.html>

From jcd at sdf.lonestar.org  Sat Oct 27 13:04:48 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Sat, 27 Oct 2007 13:04:48 -0400
Subject: Alarming message when running Python code
In-Reply-To: <1193502350.544562.261340@k79g2000hse.googlegroups.com>
References: <1193502350.544562.261340@k79g2000hse.googlegroups.com>
Message-ID: <47236FB0.3020801@sdf.lonestar.org>

peter wrote:
> I'm not sure if this query should be directed to comp.lang.python or
> comp.os.linux.misc so I intend to post it to both with apologies if
> it's inappropriate on either.
>
> I have a small python utility which I wrote myself and which crawls
> through a directory comparing all possible pairs of files.  Under
> Windows it works fine, while the same code under Linux (Fedora Core 3)
> works for a while then starts continuously throwing up the following
> message
>
> Message from syslog at localhost at [date/time]
> localhost kernel: CPU1: Temperature above threshold
>
> While the code is continues to work, it is greatly slowed by these
> constant messages, and of ourse I am left wondering if my computer is
> about to explode!
>
> Is it really true that the code causes overheating under Linux and not
> under Windows?  Or does Windows ignore the problem (and so am I
> risking damage by running the code)? Or are the Linux messages
> spurious, and if so how can I suppress them and ensure they do not
> slow the running of the code?
>
> Grateful for any help - preferably not too technical.
>
> Peter
>
>   
How well is the fan working on your computer?

How recently have you cleaned the dust out of it?

Touch it.  Is it hot?

Do you have the same problem if you turn off your computer for two hours
before you run your program?

I wouldn't run the risk if it were my computer.  If a basic cleaning
doesn't take care of the problem, take your computer to a professional.

Cheers,
Cliff

P.S. This is not a python-specific issue.


From jeffober at gmail.com  Tue Oct 30 08:56:08 2007
From: jeffober at gmail.com (Jeff)
Date: Tue, 30 Oct 2007 12:56:08 -0000
Subject: parse text file
In-Reply-To: <mailman.635.1193728743.13605.python-list@python.org>
References: <868256.95660.qm@web38415.mail.mud.yahoo.com>
	<mailman.635.1193728743.13605.python-list@python.org>
Message-ID: <1193748968.202531.115610@o38g2000hse.googlegroups.com>

You can also use strip() if it's the same possibilities every time:

line_of_text.lstrip('<values')

That's a lot faster than regex.



From filipwasilewski at gmail.com  Mon Oct 29 07:29:45 2007
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: Mon, 29 Oct 2007 11:29:45 -0000
Subject: Using msvcrt (in Windows), how to catch Enter key?
In-Reply-To: <mailman.571.1193653651.13605.python-list@python.org>
References: <mailman.571.1193653651.13605.python-list@python.org>
Message-ID: <1193657385.878620.35180@d55g2000hsg.googlegroups.com>

On Oct 29, 11:26 am, Dick Moores <r... at rcblue.com> wrote:
> Windows XP Pro, Python 2.5.1
>
> import msvcrt
> while True:
>      if msvcrt.kbhit():
>          key = msvcrt.getch()
>          if key == 'Enter'
>          do something
>
> Is there a way to catch the pressing of the 'Enter' key?

Yes there is. Just open the Python shell and see what is being
returned by `getch` or `getche` functions when you press Enter:

>>> import msvcrt
>>> msvcrt.getch()
'\r'

Also try to avoid `busy waiting` and calling msvcrt.kbhit in a loop
without a sleep statement. I don't know your case but probably this
should be enough:

while True:
    if msvcrt.getch() == '\r':
        ...

fw



From python.list at tim.thechases.com  Tue Oct 16 14:38:28 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 16 Oct 2007 13:38:28 -0500
Subject: re.sub
In-Reply-To: <C1AA20CAC1E41647BFF1D41215EDD4755C48F84DD0@wagner.cti.depaul.edu>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>	<1192516496.148265.103880@e9g2000prf.googlegroups.com>	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>,
	<4715010B.7080203@tim.thechases.com>
	<C1AA20CAC1E41647BFF1D41215EDD4755C48F84DD0@wagner.cti.depaul.edu>
Message-ID: <47150524.5090104@tim.thechases.com>

> Let me show you a very bad consequence of this...
> 
> a=open('file1.txt','rb').read()
> b=re.sub('x',a,'x')
> open('file2.txt','wb').write(b)
> 
> Now if file1.txt contains a \n or \" then file2.txt is not the
> same as file1.txt while it should be.

That's functioning as designed.  If you want to treat file1.txt 
as a literal pattern for replacement, use re.escape() on it to 
escape things you don't want.

   http://docs.python.org/lib/node46.html#l2h-407

Or, you can specially treat newlines:

   b=re.sub('x', a.replace('\n', '\\n'), 'x')

or just escape the backslashes on the incoming pattern:

   b=re.sub('x', a.replace('\\', '\\\\'), 'x')

In the help for the RE module's syntax, this is explicitly noted:

http://docs.python.org/lib/re-syntax.html
"""
If you're not using a raw string to express the pattern, remember 
that Python also uses the backslash as an escape sequence in 
string literals; if the escape sequence isn't recognized by 
Python's parser, the backslash and subsequent character are 
included in the resulting string. However, if Python would 
recognize the resulting sequence, the backslash should be 
repeated twice. This is complicated and hard to understand, so 
it's highly recommended that you use raw strings for all but the 
simplest expressions.
"""

The short upshot:  "it's highly recommended that you use raw 
strings for all but the simplest expressions."

Thus, the string that you pass as your regexp should be a regexp. 
  Not a "python interpretation a regexp before the regex engine 
gets to touch it".

-tkc







From zzbbaadd at aol.com  Wed Oct 24 01:20:42 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Tue, 23 Oct 2007 22:20:42 -0700
Subject: Python Windows Installation
In-Reply-To: <1193202753.386280.255410@q5g2000prf.googlegroups.com>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<1193202753.386280.255410@q5g2000prf.googlegroups.com>
Message-ID: <1193203242.457868.15400@e34g2000pro.googlegroups.com>

With C:\Python25 already existing, I tried to install to C:
\Python25\Python25. It installed to C:\.



From larry.bates at websafe.com  Fri Oct 26 08:30:32 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 26 Oct 2007 07:30:32 -0500
Subject: Mouse hover event in wxpython
In-Reply-To: <1193388959.145006.293510@50g2000hsm.googlegroups.com>
References: <1193388959.145006.293510@50g2000hsm.googlegroups.com>
Message-ID: <J-idnXXgEMt-QLzanZ2dnUVZ_rOqnZ2d@comcast.com>

sundarvenkata wrote:
> Hi All,
> 
> Can somebody tell me if there is an event to indicate mouse hover over
> a control in wxPython? EVT_MOTION does not seem to cut it.
> 
>  Thanks in advance,
> Sundar
> 

You might want to take a look at gmane.comp.python.wxpython for better replies 
to wxPython specific questions.  Looks like you might want OnEnter(self, x, y, 
d) and OnLeave(self) methods of wxDropTarget class

-Larry


From python.list at tim.thechases.com  Thu Oct 11 19:20:02 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 11 Oct 2007 18:20:02 -0500
Subject: remove header line when reading/writing files
In-Reply-To: <1192143175.137620.319470@q5g2000prf.googlegroups.com>
References: <1192143175.137620.319470@q5g2000prf.googlegroups.com>
Message-ID: <470EAFA2.2060409@tim.thechases.com>

> each file into one master data file.  The code below seems to be doing
> this perfectly.  The problem is each of the data files has a header
> row in the first line, which I do not want in the master file.  How
> can I skip that first line when writing to the master file?  Any help
> is much appreciated.  Thank you.
[snip]
> 		for zipfile in filelist:
> 			filein = gzip.GzipFile(zipfile,'r')
> 			filecontent = filein.read()
> 			filein.close()
> 			outfile.write(filecontent)

for zipfile in filelist:
	for i, line in gzip.Gzipfile(zipfile,'r'):
		if i: outfile.write(line)

should do the trick for you.

If you like a little more readable code, you can change that line to

  if i <> 0: outfile.write(line)

or

  if i == 0: continue
  outfile.write(line)

whichever you like.

-tkc





From gslindstrom at gmail.com  Wed Oct 31 14:10:44 2007
From: gslindstrom at gmail.com (Greg Lindstrom)
Date: Wed, 31 Oct 2007 13:10:44 -0500
Subject: PyCon 2008 - Tutorial HowTo
Message-ID: <a9f39a410710311110n101b1b21x94020917ee7f729a@mail.gmail.com>

Thinking about presenting a tutorial at PyCon 2008?  Here's a link with
everything you would ever want to know.

http://us.pycon.org/2008/tutorials/proposals/


PyCon simply would not exist without volunteers like YOU.  Get involved
today!

--greg
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/98420837/attachment.html>

From patrick.waldo at gmail.com  Mon Oct 22 18:29:38 2007
From: patrick.waldo at gmail.com (patrick.waldo at gmail.com)
Date: Mon, 22 Oct 2007 22:29:38 -0000
Subject: Regular Expression
Message-ID: <1193092178.791023.163840@v29g2000prd.googlegroups.com>

Hi,

I'm trying to learn regular expressions, but I am having trouble with
this.  I want to search a document that has mixed data; however, the
last line of every entry has something like C5H4N4O3 or CH5N3.ClH.
All of the letters are upper case and there will always be numbers and
possibly one .

However below only gave me none.

import os, codecs, re

text = 'C:\\text_samples\\sample.txt'
text = codecs.open(text,'r','utf-8')

test = re.compile('\u+\d+\.')

for line in text:
    print test.search(line)



From Glich.Glich at googlemail.com  Sun Oct 28 14:09:28 2007
From: Glich.Glich at googlemail.com (Glich)
Date: Sun, 28 Oct 2007 11:09:28 -0700
Subject: Getting callfunc from ast code.
Message-ID: <1193594968.334939.289710@57g2000hsv.googlegroups.com>

"""Hi, how can I extend the code shown below so that I can identify
any "CallFunc" in "func.code" and identify the value of "node" in
"CallFunc"? Thanks.

This is my code so far:
"""

""" Given a python file, this program prints out each function's name
in that file, the line number and the ast code of that function.

"""

import compiler
import compiler.ast

parse_file = compiler.parseFile("/home/glich/file.py")

count = 0

while count < (len(parse_file.node.nodes) - 1):

	func = parse_file.node.nodes[count]

	print "\nFunc name: " + str(func.name)
	print "Func line number: " + str(func.lineno) + "\n"

	print str(func.code) + "\n"

	count += 1


"""file.py:


def fun1():

    print "Hi"
    hi = "1"

    fun2()
    fun4()

def fun2():

    fun3()

def fun3():

    fun4()

def fun4():
    print "Hi"

fun1()

"""



From mellit at gmail.com  Sun Oct 28 19:19:10 2007
From: mellit at gmail.com (Anton Mellit)
Date: Mon, 29 Oct 2007 00:19:10 +0100
Subject: Pari Python
In-Reply-To: <fg2o3n$q62$1@ger.gmane.org>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
	<fg2o3n$q62$1@ger.gmane.org>
Message-ID: <c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>

> Have you looked at SAGE at all? They already have wrappers for Pari.

Well :) I expected that question. I tried. But the distribution for
windows is so big :( (2GB) and I could not build it on cygwin, where
it is also pretty big. And I so much like pari - it is so light and
simple and still can do almost everything. So my idea is to make
simple module for python so that you don't need to install 2GB program
with 2000 functions where it is difficult to find the one you need,
but just type 'import pari', and then help(pari), and then find a
function like 'ellinit' and create an elliptic curve, or type some
polynomial and factor, or expand some function into power series, or
integrate numerically...

I heard from some people that SAGE is good but i somehow don't
appreciate the approach.

> I don't recommend continuing to modify core parts of Python just for your
> module. It means that you will break other Python modules. If you can't use
> other Python modules with your module, what's the point of using Python at all?

Of course you don't have to replace ** with ^ or making that hack with
division. The module would work with or without these changes. But I
think every mathematician agrees that x**2 is really ugly. It is so
often I have to type something like
(1+x)*(1+x^2)*(1+x^3), compare with (1+x)*(1+x**2)*(1+x**3)
or some polynomial (compare 1+x+x^2+x^3 and 1+x+x**2+x**3)
The same thing about the division. Having to write R*1/2 (where R
equals to one, but the type of R is the new number type) is also ugly.
If you write a program you don't have to do it too often, but if you
work 'interactively' then you have to type it more often, then read
the result from screen, or copy-paste a formula from somewhere.

And I think (correct me if I am wrong) that the ^ operator (xor) is
used very very infrequently. And it is not difficult to replace all ^
with say ^^. The division is probably used more often, but python has
this trend anyway - to replace division with 'true' division, so
people should use // when they divide integers and expect an integer.

Other than these two things (the second one does not require
recompilation, so it is not so bad probably) I don't need any changes
to python core. I agree that a standard must be standard.

Anton


From bj_666 at gmx.net  Sun Oct 14 10:01:32 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 14 Oct 2007 14:01:32 GMT
Subject: Simple Text Processing Help
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
Message-ID: <5nelpsFhieq6U1@mid.uni-berlin.de>

On Sun, 14 Oct 2007 13:48:51 +0000, patrick.waldo wrote:

> Essentially I need to take a text document with some chemical
> information in Czech and organize it into another text file.  The
> information is always EINECS number, CAS, chemical name, and formula
> in tables.  I need to organize them into lines with | in between.  So
> it goes from:
> 
> 200-763-1                     71-73-8
> n?trium-tiopent?l           C11H18N2O2S.Na           to:

Is that in *one* line in the input file or two lines like shown here?

> 200-763-1|71-73-8|n?trium-tiopent?l|C11H18N2O2S.Na
> 
> but if I have a chemical like: kyselina mo?ov?
> 
> I get:
> 200-720-7|69-93-2|kyselina|mo?ov?
> |C5H4N4O3|200-763-1|71-73-8|n?trium-tiopent?l
> 
> and then it is all off.
> 
> How can I get Python to realize that a chemical name may have a space
> in it?

If the two elements before and the one element after the name can't
contain spaces it is easy:  take the first two and the last as it is and
for the name take from the third to the next to last element = the name
and join them with a space.

In [202]: parts = '123 456 a name with spaces 789'.split()

In [203]: parts[0]
Out[203]: '123'

In [204]: parts[1]
Out[204]: '456'

In [205]: ' '.join(parts[2:-1])
Out[205]: 'a name with spaces'

In [206]: parts[-1]
Out[206]: '789'

This works too if the name doesn't have a space in it:

In [207]: parts = '123 456 name 789'.split()

In [208]: parts[0]
Out[208]: '123'

In [209]: parts[1]
Out[209]: '456'

In [210]: ' '.join(parts[2:-1])
Out[210]: 'name'

In [211]: parts[-1]
Out[211]: '789'

> #read and enter into a list
> chem_file = []
> chem_file.append(input.read())

This reads the whole file and puts it into a list.  This list will
*always* just contain *one* element.  So why a list at all!?

> #split words and store them in a list
> for word in chem_file:
>     words = word.split()

*If* the list would contain more than one element all would be processed
but only the last is bound to `words`.  You could leave out `chem_file` and
the loop and simply do:

words = input.read().split()

Same effect but less chatty.  ;-)

The rest of the source seems to indicate that you don't really want to read
in the whole input file at once but process it line by line, i.e. chemical
element by chemical element.

Ciao,
	Marc 'BlackJack' Rintsch


From besturk at gmail.com  Sat Oct 20 21:28:38 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 20 Oct 2007 18:28:38 -0700
Subject: Selection error...
Message-ID: <1192930118.501328.277540@i38g2000prf.googlegroups.com>

Hi..
I want to select datas but some datas give me this error:

psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
0xc720
HINT:  This error can also happen if the byte sequence does not match
the encoding expected by the server, which is controlled by
"client_encoding".

My select command:
cursor.execute("SELECT id from templinks where url='%s'"% URL)

This problem occured only select data when i try insert the same data
it doesn't give me error..
Note: My database is UTF-8 and the URLS come from different web sites'
html code
How can i fix this problem ?
I'm sorry my bad english..



From arturklis2 at gmail.com  Thu Oct 11 15:54:36 2007
From: arturklis2 at gmail.com (arturklis2 at gmail.com)
Date: Thu, 11 Oct 2007 19:54:36 -0000
Subject: Guitars Masters
Message-ID: <1192132476.423354.236570@57g2000hsv.googlegroups.com>

Guitars reviews, lessons, pictures, and more!!!!!!!

http://guitars-masters.blogspot.com/



From software at ginstrom.com  Thu Oct  4 21:08:18 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Fri, 5 Oct 2007 10:08:18 +0900
Subject: unit testing
In-Reply-To: <47054a3d$0$16347$426a74cc@news.free.fr>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu><7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
Message-ID: <08aa01c806ec$376d7d30$0203a8c0@MOUSE>

> On Behalf Of Bruno Desthuilliers
> Or py.test or nose, which are both more complete than doctest 
> and more pythonics than the unittest module.

I second the recommendation of nose. It makes it fantastically easy to write
and run unit tests.

Also, in my experience unit tests help reduce bugs in the development
process, but their main benefits are making code more modular (writing for
testing tends to reduce dependencies) and easier to modify (less fear in
refactoring).

Regards,
Ryan Ginstrom



From gagsl-py2 at yahoo.com.ar  Wed Oct 31 22:23:09 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 31 Oct 2007 23:23:09 -0300
Subject: object inheritance
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
	<Xns99D59713BE0FAduncanbooth@127.0.0.1>
	<1193801794.225829.82490@i13g2000prf.googlegroups.com>
	<mailman.667.1193806679.13605.python-list@python.org>
	<1193829032.389700.215520@q3g2000prf.googlegroups.com>
Message-ID: <op.t03cwva5x6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 31 Oct 2007 19:26:17 -0300, Anand <anandology at gmail.com> escribi?:

> On Oct 31, 9:57 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
> wrote:
>>
>> If you know at compile time which features you want, you can use  
>> multiple
>> inheritance to define the new class.
>> If you only know the set of clases to mix at run time, you can  
>> dinamically
>> create new classes with 'type':
>
> Interesting.
>
> CachedDB.withID should call withID from its super class (here
> SimpleDB), when it is not in cache. How to do that?

Using super(). See  
<http://docs.python.org/dev/tutorial/classes.html#multiple-inheritance>  
and <http://www.python.org/2.3/mro.html> for the details.

This is a running version of your example:

py> class SimpleDB(object):
...     def withID(self, id):
...         print "SimpleDB.withID",id
...         return "Data for %s" % id
...     def withIDs(self, ids):
...         return [self.withID(id) for id in ids]
...
py> class CachedDB(object):
...     def __init__(self):
...         # CachedDB instances must have a cache dictionary
...         super(CachedDB, self).__init__(self)
...         self.cache = {}
...     def withID(self, id):
...         print "CachedDB.withID",id
...         res = self.cache.get(id)
...         if res is None:
...             print "cache miss!"
...             self.cache[id] = res = super(CachedDB, self).wit
hID(id)
...         return res
...
py> newclass = type('newclass', (CachedDB, SimpleDB), {})
py> db = newclass()
py> print db.withIDs([1,2,1,3,2,1])
CachedDB.withID 1
cache miss!
SimpleDB.withID 1
CachedDB.withID 2
cache miss!
SimpleDB.withID 2
CachedDB.withID 1
CachedDB.withID 3
cache miss!
SimpleDB.withID 3
CachedDB.withID 2
CachedDB.withID 1
['Data for 1', 'Data for 2', 'Data for 1', 'Data for 3', 'Data f
or 2', 'Data for 1']

Multiple inheritance is not the only option. You may want to read about  
decorators too: instead of overriding the method withID, you can decorate  
it with some variant of the "memoize" decorator. Look for the (excellent!)  
article on decorators by Michele Simionato.

-- 
Gabriel Genellina



From bear at bears.org  Thu Oct  4 11:35:03 2007
From: bear at bears.org (Gary Coulbourne)
Date: Thu, 04 Oct 2007 11:35:03 -0400
Subject: Combine two dictionary...
In-Reply-To: <1191261690.056215.179920@57g2000hsv.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
	<mailman.1357.1191260483.2658.python-list@python.org>
	<1191261690.056215.179920@57g2000hsv.googlegroups.com>
Message-ID: <MK7Ni.6464$mS5.5053@fe089.usenetserver.com>

>>> dict1={1: 4,  3: 5}... and 2 millions element
>>> dict2={3: 3,  8: 6}... and 3 millions element

If you don't mind doing some kind of lazy evaluation, you could do
something like...

------------------------------
dict1={1:4, 3:5}
dict2={3:3, 8:6}

import UserDict

class Merge(UserDict.DictMixin):

   def __init__(self,d1,d2):
       self.dict1 = d1
       self.dict2 = d2

       keyset = set(d1.keys())
       keyset.update(d2.keys())

       self.dkeys = list(keyset)


   def keys(self):
       return self.dkeys

   def __getitem__(self,key):
       v1 = 0
       v2 = 0
       if key in self.dict1:
          v1 = self.dict1[key]
       if key in self.dict2:
          v2 = self.dict2[key]
       return v1+v2

m = Merge(dict1,dict2)

print m
------------------------------

This basically does a sort of "virtual merge"... only merging when you
actually ask for an element in the list.

-- 
--------------------------------------------------------------------
    Gary Coulbourne                        Software Developer
                                           C/C++, Java, Perl, Python


From jjl at pobox.com  Wed Oct  3 14:35:12 2007
From: jjl at pobox.com (John J. Lee)
Date: Wed, 03 Oct 2007 18:35:12 GMT
Subject: Python and SSL
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
	<1191420037.564584.103300@50g2000hsm.googlegroups.com>
Message-ID: <877im4xd0f.fsf@pobox.com>

Johny <python at hope.cz> writes:

> On Oct 3, 2:17 pm, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
>> > It looks like this
>>
>> > MyPythonProgram --->Proxy---->Server

You want MyPythonProgram being to be proxied by Proxy, using the HTTP
CONNECT method? (CONNECT is a way of asking the proxy to just shovel
encrypted SSL traffic from client to server) Python's standard library
doesn't provide support for that.  While it's it's possible to do it,
httplib does not provide all the code to do it, and it's actually
quite awkward to do from e.g. urllib2.


>> > The  proxy is written in Java. I want to use that proxy to see what my
>> > Python program sends to server.

Does the proxy have support for behaving as a "man-in-the-middle",
then (by giving the proxy the private key)?  I think I've heard of
that being done for test purposes, but I don't know the details.
Seems rather odd.

An easier way is to print the traffic from your Python program.


[...]
> After I added certification, that the proxy uses, among those
> Trusted Root Certification Authorities list,as
> Gabriel described on Windows,
>
> I receive
> sslerror: (1, 'error:140770FC:SSL
> routines:SSL23_GET_SERVER_HELLO:unknown protocol')
>
>
> What does it mean?

It means that it's trying to interpret SSL traffic as if it were HTTP
traffic.  Look on ASPN Python Cookbook for a few recipes on HTTP
CONNECT (though ISTR I had to rework the one I looked at before it
worked for me).  Ask if you get stuck.


John


From meesters at uni-mainz.de  Wed Oct 31 13:21:58 2007
From: meesters at uni-mainz.de (Christian Meesters)
Date: Wed, 31 Oct 2007 18:21:58 +0100
Subject: permuting over nested dicts?
Message-ID: <fgadjl$4f3$1@news1.zdv.uni-mainz.de>

Hoi,

I have the following data structure (of variable size actually, to make
things simple, just that one):
d = {'a': {'x':[1,2,3], 'y':[4,5,6]},
     'b': {'x':[7,8,9], 'y':[10,11,12]}}
This can be read as a dict of possibilities: The entities 'a' and 'b' have
the parameters 'x' and 'y', each. And d['a']['x'] can be either 1 or 2 or
3. Does anybody know a convenient (and fast) way to permute over all
possible nested dicts like
{'a': {'x':1, 'y':4},
 'b': {'x':7, 'y':10}}
and
{'a': {'x':2, 'y':4},
 'b': {'x':7, 'y':10}}
and so forth?

Any link or snippet is appreciated.

TIA
Christian


From arkanes at gmail.com  Wed Oct  3 11:30:37 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 3 Oct 2007 10:30:37 -0500
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <13g5uvh698l9h1c@corp.supernews.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<13g5uvh698l9h1c@corp.supernews.com>
Message-ID: <4866bea60710030830x69c287edqd9bf57dd9d0c8fc3@mail.gmail.com>

On 10/2/07, Grant Edwards <grante at visi.com> wrote:
> On 2007-10-02, Chris Mellon <arkanes at gmail.com> wrote:
>
> > PyGtk has poor cross platform support, a very large footprint (the
> > largest of all these libraries)
>
> It's larger than wxWidgets on top of Gtk?
>

No, but it's larger than wx on top of the native API, so when you
average it across all platforms it's quite a bit larger.


From MrJean1 at gmail.com  Tue Oct 30 19:15:40 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Tue, 30 Oct 2007 23:15:40 -0000
Subject: why did these companies choose Tcl over Python
In-Reply-To: <4727B465.1070600@v.loewis.de>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
	<4727B465.1070600@v.loewis.de>
Message-ID: <1193786140.337744.211790@e9g2000prf.googlegroups.com>

That is correct.  Tcl has it roots at UC Berkeley and was originally
used
to provide a command line interface for electronic design automation
(EDA)
tools.

Most commercial EDA vendors at that time were using their own,
proprietary
command language.  Only later became Tcl widely adopted among EDA
vendors
and -even more important- among users, electronic designers.

There is a large base of Tcl scripts in existence among users.
Replacing
that is practically and commercially simply not feasible regardless of
the strengths or weaknesses of Tcl vs any other language.

Recently, Python is getting more traction inside EDA, especially for
internal use and internal development and in some cases as the design
language of newer EDA tools.

/Jean Brouwers


On Oct 30, 3:47 pm, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
> > I would prefer to use Python but can't deny how popular Tcl is,  as
> > mentioned above,  so my question is why wasn't Python selected by
> > these companies as the choice of scripting languages for their
> > product?
>
> I think this question needs to be answered on a case-by-case basis,
> but my guess is that it is in most cases historical. Work on Tcl
> started in 1988, and it was the first (major?) embeddable scripting
> language (that is also free software etc). Python wasn't released
> until 1991, and wasn't first recognized as being just as easily
> embeddable (and I think early releases weren't as easily embeddable
> as today's Python is).
>
> Tcl's original objective was to support circuit design, so people
> in that field clearly knew that Tcl worked, but they were likely
> unaware of any alternatives (or else the future of these alternatives
> may have been uncertain).
>
> So at that time, Tcl would have been the obvious (because only)
> choice. Now these products are stuck with Tcl, and redoing all
> the work (including the existing extension modules!) in a different
> programming language would be a lot of work.
>
> Regards,
> Martin




From manuhack at gmail.com  Tue Oct  9 01:20:54 2007
From: manuhack at gmail.com (Manu Hack)
Date: Tue, 9 Oct 2007 01:20:54 -0400
Subject: property question
Message-ID: <50af02ed0710082220q4acbc37di7a181d5db536e522@mail.gmail.com>

hi all,

If I have a class A with A.x, A.y, A.z.  A.y and A.z are property and
in order to compute the value of them, A.y depends on A.x while A.z
depends on A.y and A.x.  If I call A.y, and A.z, the value A.y would
be computed twice.  Is there a smart way to avoid that as to A.y will
be recomputed only if A.x has been changed?  Now I can define more
variables to keep track of what is changed but when there are more
variables and the dependency becomes more involved it could be very
complicated.  Thanks a lot.

Manu


From steve at REMOVE-THIS-cybersource.com.au  Fri Oct  5 06:55:06 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 05 Oct 2007 10:55:06 -0000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
	<fe4mst$jic$1@lust.ihug.co.nz>
Message-ID: <13gc60a95gri6c4@corp.supernews.com>

On Fri, 05 Oct 2007 19:51:05 +1300, Lawrence D'Oliveiro wrote:

> There is no sense in which any Python object can "contain" any other.

>>> L = [1, 2, 3]
>>> 2 in L
True
>>> L.__contains__(3)
True



-- 
Steven.


From dominiquevalentine at gmail.com  Tue Oct 30 00:30:15 2007
From: dominiquevalentine at gmail.com (dominiquevalentine at gmail.com)
Date: Tue, 30 Oct 2007 04:30:15 -0000
Subject: mimicking the ipod UI in python
Message-ID: <1193718615.734414.183120@q5g2000prf.googlegroups.com>

anyone have any advice as to where to start if i say..wanted to
program the ipods UI? I have one python project under my belt so far,
and i'm going for my second. I want to try to mimic the ipod using
python -- that is, basically, i want a virtual ipod in a window, using
either pygtk or wxglade if possible (learning both).

not sure if html works..
<img src="http://media.arstechnica.com/journals/apple.media/thumb/
450/450/050217_ipod_ui.jpg">
http://media.arstechnica.com/journals/apple.media/thumb/450/450/050217_ipod_ui.jpg

 i've been searching for examples but can't find anything like what i
need
 i'm currently having a go at trying it in wxglade with a treectrl &
opening the new folder in a new window
 but it's not turning out so swell.

if it makes any difference, im on ubuntu.



From Florian.Lindner at xgm.de  Thu Oct 18 14:32:28 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Thu, 18 Oct 2007 11:32:28 -0700
Subject: Problem with format string / MySQL cursor
Message-ID: <1192732348.392303.151430@i38g2000prf.googlegroups.com>

Hello,
I have a string:

INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
`gid`, `password`) VALUES (%s, %s, %s, %s, %i, %i, %s)

that is passed to a MySQL cursor from MySQLdb:

ret = cursor.execute(sql, paras)

paras is:

('flindner', 'test1 at florian-lindner.de', '/home/flindner/', '/home/
flindner/Mail/test', 1001, 1001, '123')

But that gives me an error:

Traceback (most recent call last):
  File "account.py", line 188, in ?
    main()
  File "account.py", line 33, in main
    execute(action, account_type, options)
  File "account.py", line 129, in execute
    executeSQL(sql, options.username, options.login, options.home,
options.directory, options.uid, options.gid, options.password)
  File "/home/flindner/common.py", line 29, in executeSQL
    ret = cursor.execute(sql, paras)
  File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line
148, in execute
    query = query % db.literal(args)
TypeError: int argument required


I don't see errors in the format string or some other problem....

What's wrong?

Thanks,

Florian



From python.list at tim.thechases.com  Sun Oct 21 21:53:27 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 21 Oct 2007 20:53:27 -0500
Subject: Splitting URLs
In-Reply-To: <13hnmip3i81kh93@corp.supernews.com>
References: <13hmp2330pgrua4@corp.supernews.com>	<mailman.293.1192996519.13605.python-list@python.org>
	<13hnmip3i81kh93@corp.supernews.com>
Message-ID: <471C0297.4050109@tim.thechases.com>

>> there are some goodies in urllib for doing some of this splitting. 
>> Example code at the bottom of my reply (though it seems to choke on
>> certain protocols such as "mailto:" and "ssh:" because urlparse doesn't
>> return the netloc properly)
> 
> It doesn't? That's... bad. But for my application, probably not 
> important: I only care about HTTP.

This seems to be intentional, rather than a bug.  In my
python2.4/urlparse.py file, there's a uses_netloc list which
clearly does not have 'mailto' in it.  I can't give an
explanation/justification for it, but it seems to me (IMHO) that
there is a netloc involved in a mail address.

Or maybe I have a semantic misunderstanding of what the netloc
field means when returned from urlparse.urlparse  However, since
this is where the hostname appears in "http", it makes me think
that the hostname from a mailto URL should also appear in this
result field.

-tkc







From arnodel at googlemail.com  Thu Oct 25 05:47:01 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Thu, 25 Oct 2007 09:47:01 -0000
Subject: about functions question
In-Reply-To: <1193304629.429307.50980@v3g2000hsg.googlegroups.com>
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
Message-ID: <1193305621.987689.24060@o80g2000hse.googlegroups.com>

On Oct 25, 10:30 am, Arnaud Delobelle <arno... at googlemail.com> wrote:
[...]
> "look for the object currently bound to the name 'b' in the
> global dictionary, and execute the __call__ method of that object with
> no arguments"

This is what happens at runtime.  Rereading, I thought I hadn't made
it clear.

--
Arnaud




From rjcarr at gmail.com  Mon Oct  1 23:03:10 2007
From: rjcarr at gmail.com (rjcarr)
Date: Tue, 02 Oct 2007 03:03:10 -0000
Subject: module confusion
Message-ID: <1191294190.265530.189700@o80g2000hse.googlegroups.com>

Sorry if this is a completely newbie question ...

I was trying to get information about the logging.handlers module, so
I imported logging, and tried dir(logging.handlers), but got:

AttributeError: 'module' object has no attribute 'handlers'

The only experience I have in modules is os and os.path ... if I do
the same thing, simply import os and then type dir(os.path), it
displays the contents as expected.

So my question is ... why are they different?  I mean, in terms of
designing these modules, how would you go about getting a sub-module
in your name space?  And on the other side, how would you go about
getting it out?

Thanks!



From mail at gedankenkonstrukt.de  Tue Oct 16 02:52:41 2007
From: mail at gedankenkonstrukt.de (Thomas Wittek)
Date: Tue, 16 Oct 2007 08:52:41 +0200
Subject: Automatically organize module imports
In-Reply-To: <mailman.34.1192475606.13605.python-list@python.org>
References: <mailman.34.1192475606.13605.python-list@python.org>
Message-ID: <ff1n3q$bl5$1@newsreader2.netcologne.de>

Jean-Paul Calderone:
> On Mon, 15 Oct 2007 20:52:11 +0200, Thomas Wittek
> <mail at gedankenkonstrukt.de> wrote:
>> Is there a tool that can organize my import section?
> 
> Pyflakes will tell you which imports aren't being used (among other
> things).  I don't know if an existing tool which will automatically
> rewrite your source, though.

As Python itself complains about missing imports Pyflakes + Python
should be a good team in cleaning up my imports.
I'll give it a try. Thank you!

-- 
Thomas Wittek
Web: http://gedankenkonstrukt.de/
Jabber: streawkceur at jabber.i-pobox.net
GPG: 0xF534E231


From half.italian at gmail.com  Fri Oct 19 20:13:48 2007
From: half.italian at gmail.com (Sean DiZazzo)
Date: Sat, 20 Oct 2007 00:13:48 -0000
Subject: SQLObject - Connect to established DB with non-int 'id' field
Message-ID: <1192839228.836892.139780@e9g2000prf.googlegroups.com>

Hi all,

I am just beginning with TurboGears and have run into a problem with
SQLObject.

I'm trying to connect to an established mysql DB, and use TurboGears
to display results from the DB only.  The problem is that the DB
already has an 'id' field that is a string as opposed to an int.
SQLObject complains because it wants to use the id field for it's own
purposes.

How can I use TurboGears to get data out of this DB?

Thanks in advance.

~Sean



From fred.sells at adventistcare.org  Tue Oct  2 13:16:54 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Tue, 2 Oct 2007 13:16:54 -0400
Subject: Mysqldb printing sql and params no matter what I do
In-Reply-To: <470143C9.9080305@tim.thechases.com>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38C4@acesxch01.ADVENTISTCORP.NET>

I had some code originally that printed the sql and params when I called
the .execute method.  I removed it but it still prints.  I rebooted and
renamed files and still it prints.  I am totally stumped; I tried google
but perhaps didn't use the right search; got a lot of hits but no clues.

I'm using MySQLdb 1.2.2 and python 2.4.4 on XP

here is a snipppet that shows problem.
import MySQLdb
from datetime import *

DBSERVER='localhost'
DBSCHEMA='mds81'
sql = '''SELECT aid  from assessments WHERE xmitdate  between %s AND %s
LIMIT 9'''


class _record:
    def __init__(self, adict):self.__dict__=adict

class CaptainQuery:
    def __init__(self, host, schema):
        self.Connection = MySQLdb.connect (host=host, db=schema)
        self.dictcursor =
self.Connection.cursor(cursorclass=MySQLdb.cursors.DictCursor)
        print '----------before execute----------------'
        self.dictcursor.execute(sql, (20070201, 20070630) )
        print '------------after execute-----------'
        records = self.dictcursor.fetchall()
        for r in records: print r

 
Q = CaptainQuery(DBSERVER, DBSCHEMA )

----------------- the output is below---------------------------------

----------before execute----------------
SELECT aid  from assessments WHERE xmitdate  between %s AND %s LIMIT 9
(20070201, 20070630)
------------after execute-----------
{'aid': 16711L}
{'aid': 16712L}
{'aid': 16713L}
{'aid': 16715L}
{'aid': 16845L}
{'aid': 16849L}
{'aid': 16850L}
{'aid': 16851L}
{'aid': 16852L}

---------------------------------------------------------------------------
The information contained in this message may be privileged and / or
confidential and protected from disclosure. If the reader of this message is
not the intended recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited. If you
have received this communication in error, please notify the sender
immediately by replying to this message and deleting the material from any
computer.
---------------------------------------------------------------------------


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct  4 13:05:31 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 19:05:31 +0200
Subject: Python "implements <interface>" equivalent?
In-Reply-To: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
Message-ID: <47051d47$0$8036$426a74cc@news.free.fr>

Wojciech Gryc a ?crit :
> Hi,
> 
> I recently started using Python and am extremely happy with how
> productive it's made me, even as a new user. I'm hoping to continue
> using the language for my research, and have come across a bit of a
> stumbling block.
> 
> I'm a seasoned Java programmer

So you may want to read this:

http://dirtsimple.org/2004/12/python-is-not-java.html

http://dirtsimple.org/2004/12/java-is-not-python-either.html

> and quite a big fan of interfaces...
> i.e. The idea that if I make a number of distinct classes that
> implement interface X, I can pass them all as parameters to functions
> or whatnot that require an X object.
> 
> Is there something similar in Python?

Yes, and it's even simpler : just pass your object. If it effectively 
implements the desired interface, everything will work fine !-)

IOW : Python is dynamically typed, there's no parameters type 
declaration and no parameters type checking at compile time - so you 
just don't need to tell the compiler that your class implements a given 
interface. Anyway, this would be a waste of time since you can 
add/delete/replace attributes and methods at runtime either on a 
per-class or per-instance basis.

> What I'd like to do is create a feature detection system for my work
> -- specifically, a general class / interface called "Feature" and then
> subclasses that implement functions like isFeaturePresent() in all of
> their different and unique ways. I'd love to hear how I can do this in
> Python.

I'm not sure about what you exactly want to do, but FWIW, checking if an 
object has a given attribute is quite simple:

if has_attr(obj, 'attribute_name'):
   print "Hurray"
else:
   print "D'oh"

Note that in Python, methods are attributes too - only they are callable.



> Thanks,
> Wojciech
> 


From besturk at gmail.com  Wed Oct 17 12:12:59 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 17 Oct 2007 09:12:59 -0700
Subject: Order by value in dictionary
In-Reply-To: <ff5al7$g6d$03$1@news.t-online.com>
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
	<5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
	<5nmk3kFiv0krU2@mid.uni-berlin.de>
	<1192633790.090464.306800@t8g2000prg.googlegroups.com>
	<ff5al7$g6d$03$1@news.t-online.com>
Message-ID: <1192637579.847654.5790@q5g2000prf.googlegroups.com>

I tried these:

def largest_sort(d, n):
    return sorted(d, key=d.__getitem__, reverse=True)[:n]


def largest_heap(d, n):
    return heapq.nlargest(n, d, d.__getitem__)

def sortt(d):
    sorted_items = sorted((item[1], item[0]) for item in
d.iteritems(),
                          reverse=True)
    return map(operator.itemgetter(1), sorted_items)

.....
and the fastest method is second ;)



From martin at marcher.name  Fri Oct 26 08:42:49 2007
From: martin at marcher.name (Martin Marcher)
Date: Fri, 26 Oct 2007 14:42:49 +0200
Subject: Eclipse Plugins
In-Reply-To: <-5528451693797282245@unknownmsgid>
References: <-5528451693797282245@unknownmsgid>
Message-ID: <5fa6c12e0710260542r230020c2mef183f8897725d64@mail.gmail.com>

2007/10/26, Robert Rawlins - Think Blue <robert.rawlins at thinkbluemedia.co.uk>:
> I'm not sure what you IDE you all generally use for your python development.
> I've been somewhat lazy and always used a plain text editor, however this
> technique is starting to take its toll, and it's purely been out of laziness
> not finding myself a decent IDE to develop in. So this morning task is to
> pull my thumb out of my arse and set something up properly.

With Eclipse 3.3 IIRC there is a "Dynamic Language IDE" Package
available. Out of the box, as far as a I know it only supports ruby. I
didn't look to much into it (out of the same reasons you named). Maybe
that could do something with a few tweaks or additional plugins.

> For my other languages, such as HTML, ColdFusion, JAVA etc I make good use
> of the Eclipse SDK, and I'm looking for some advice on the best and most
> popular python plug-ins available, what would you suggest? I downloaded one
> called PyDev which looked ok but nothing too exciting.

I just switched to using emacs. Still struggling with it but it has
some nice features

C-c C-h - to find the help of something
C-c C-c - to run the "buffer" (file) I'm currently editing

a few commands which are customizeable enough to run highlighted text
(where IIRC one can define stuff to pre setup an environment if for
example you need to run a method of a class)

and some other nifty stuff. Be aware the learning curve is quite high

(for the vim guys. I've been using vim before but for my use case
emacs provides just more stuff that "just works". vim may also be your
choice with a few tweaks it does a lot, and it does it fast)

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From e0427417 at student.tuwien.ac.at  Thu Oct 11 15:05:56 2007
From: e0427417 at student.tuwien.ac.at (Mathias Panzenboeck)
Date: Thu, 11 Oct 2007 21:05:56 +0200
Subject: weakrefs and bound methods
In-Reply-To: <470a818a$0$14499$426a74cc@news.free.fr>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<4708f45d$0$11868$3b214f66@tunews.univie.ac.at>
	<470a818a$0$14499$426a74cc@news.free.fr>
Message-ID: <470e7416$0$12642$3b214f66@tunews.univie.ac.at>

Bruno Desthuilliers wrote:
> Mathias Panzenboeck a ?crit :
> 
> About the lost weakref problem: in Python, methods are just tiny
> wrappers around the object, class and function created at lookup time
> (yes, on *each* lookup) (and WWAI, they are by the function object
> itself, which implements the descriptor protocol).
> 
>> When I change the class Wrapper to following, the class Foo works:
>>
>> class Wrapper(object):
>>     def __init__(self,x):
>>         self.func_name = x.func_name
>>         self.x         = weakref.ref(x.im_self)
> 
>>     def __call__(self,*args,**kwargs):
>>         x = self.x()
>>         if x is None:
>>             print "lost reference"
>>         else:
>>             return getattr(x,self.func_name)(*args,**kwargs)
> 
> Anyway, the whole thing looks quite baroque to me - and I'm known for my
> immoderate appetite for brain-melting features....
> 
> If I understand correctly, you're doing all this to avoid circular
> references while keeping track of a list of methods to call ?
> 
> If yes, then you're thru much pain for nothing. Mostly because there are
>  other much more simpler solutions. The first one is obviously to use
> names and getattr. In it's most na?ve implementation, this would look like:
> 
> class Foo(object):
>     def __init__(self):
>     self._methods = set()
>     self._methods.add('_foo')
> 
>     def _foo(self):
>     print "_foo"
> 
>     def callMethods(self):
>      for name in self._methods:
>              meth = getattr(self, name, None)
>              if callable(meth):
>                  meth()
> 
> 
> 
> 
> Now if _methods is supposed to have the same content class-wise (which
> is the case in your exemple), no need to have it as an instance method:
> 
> class Foo(object):
>     _methods = set('_foo')
> 
>     def _foo(self):
>     print "_foo"
> 
>     def callMethods(self):
>      for name in self._methods:
>              meth = getattr(self, name, None)
>              if callable(meth):
>                  meth()
> 
> We could go further, like using a decorator to mark methods to add to
> _methods, and a metaclass to set the whole thing up, but this would
> probably be overkill. Unless there are other requirements, I'd
> personnaly stop here.
> 
> Oh, and yes, while we're at it : Python usually knows how to deal with
> circular references....
> 

Well yes and no. It does with the enabled gc but I like refcounting much more because
of the predictable behaviour. And when there are no refloops, refcounting makes no
problems. However, Alex Martelli already showed a great way to do what I need, see:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81253

I need it for a little UI lib. Well lib is too much. Just a small wrapper around
blenders unusable API for building GUIs for your scripts. It's ugly as hell.
I made very few classes to wrap up that crap. Every input widget in my UI lib has an
action. You can register action listeners like this:

def actionListener(value):
	print "new value:",value

widget.addActionListener(actionListener)

When an widget itself want's to listen for it's action and does this in __init__:

	self.addActionListener(sefl.__actionListener)

there would be a ref loop. Therefore I do this now:

	self.addActionListener(WeakListener(sefl.__actionListener))

And WeakListener I implemented as follows:

class WeakListener(object):
	__slots__ = ('__weakref__', '_func','_obj')

	def __init__(self,listener):
		self._func = listener.im_func
		self._obj  = weakref.ref(listener.im_self)
	
	def __call__(self,*args,**kwargs):
		obj = self._obj()

		if obj is None:
			print "*** lost reference to %s's self object ***" % \
				self._func.func_name
		else:
			self._func(obj,*args,**kwargs)


Could be better/more generic, but that's all I need.

To implement the action listener by overloading a action method is IMHO a bad idea.
Because that would kill the listener of the base class. Explicitly calling the base
classes action method is ugly and error prone. And when I have to register action
listeners from "outside" the widget, too.

But thanks for your reply. :)

	-panzi


From mail at microcorp.co.za  Thu Oct  4 03:15:33 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Thu, 4 Oct 2007 09:15:33 +0200
Subject: Real time plot
References: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM>
Message-ID: <017501c8065a$d1244ea0$03000080@hendrik>

 Jean-Francois Canac  wrote:

>I am reading a large amount of data from a COM port (or from a file) at a rate
of 20 records per second. It is about >positioning of a vehicle on a race track.
>In each record we have time, position (lat and long) speed, course all from GPS
equipment. I would like to Produce a >graph in real time with these records to
see the  vehicle moving on the track. The goal is to study the vehicle
>performance and to always have its position, the application would run around
24 hours.
 >
>I would like to write the application in Python and I am wondering which plot
interface would be the more appropriate, I >have seen matplotlib, but I do not
know how to make real time applications with big amount of data. Is hippodraw
more >suited to this use or an other interface?
>Many thanks

I would draw dots on a suitably sized Tkinter canvas, after drawing a schematic
of the race track (laborious).

20 per second will be no problem, provided the machine is half decent.

What is the speed at which the com port runs?

- Hendrik



From cjw at sympatico.ca  Sun Oct  7 18:22:10 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Sun, 07 Oct 2007 18:22:10 -0400
Subject: ANN: Pyrex 0.9.6
In-Reply-To: <5msdpsFf5b87U1@mid.uni-berlin.de>
References: <mailman.1631.1191754836.2658.python-announce-list@python.org>	<mailman.1642.1191764237.2658.python-list@python.org>
	<5msdpsFf5b87U1@mid.uni-berlin.de>
Message-ID: <febm6m$8ir$1@sea.gmane.org>

Diez B. Roggisch wrote:
> Colin J. Williams schrieb:
>> Greg Ewing wrote:
>>> Pyrex 0.9.6 is now available:
>>>
>>>    http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/
>>>
>>> There is a *lot* of new stuff in this version, too much
>>> to fit into this announcement. Read all about it here:
>>>
>>>    
>>> http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/changes-0.9.6.html 
>>>
>>>
>>> What is Pyrex?
>>> --------------
>>>
>>> Pyrex is a language for writing Python extension modules.
>>> It lets you freely mix operations on Python and C data, with
>>> all Python reference counting and error checking handled
>>> automatically.
>> Some of the doc\Manual files seem to be missing eg source_files.
>>
>> I was browsing hoping to find an answer to the question "Do I
>> need a C compiler to use Pyrex, if so, which one?
> 
> Can't say that anything about the reason for the missing files - but one 
> thing is for sure: you need one. And I _presume_ it's the one distutils 
> would chose, so it depends on your python-build.
> 
> Diez
Thanks, I feared that.

Colin W.



From jhonwatson at googlemail.com  Tue Oct 30 10:14:08 2007
From: jhonwatson at googlemail.com (jhon)
Date: Tue, 30 Oct 2007 07:14:08 -0700
Subject: Earn Up To 100's of $ per Day with Ease!
Message-ID: <1193753648.695146.66260@v23g2000prn.googlegroups.com>

Tired of business opportunities that do not deliver what they promise?

Get Free Advice & a Honest Review on Internet Opportunities that Work!

MOre details http://powerfulmoneymakingideas.blogspot.com/



From martin at v.loewis.de  Wed Oct  3 12:41:28 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 03 Oct 2007 18:41:28 +0200
Subject: toprettyxml messes up with whitespaces
In-Reply-To: <mailman.1441.1191406731.2658.python-list@python.org>
References: <mailman.1402.1191343422.2658.python-list@python.org>	<1191358854.210832.70630@n39g2000hsh.googlegroups.com>	<mailman.1438.1191403809.2658.python-list@python.org>	<1191405464.131347.18420@r29g2000hsg.googlegroups.com>
	<mailman.1441.1191406731.2658.python-list@python.org>
Message-ID: <4703C638.8090107@v.loewis.de>

> <quote>
> Such white space is typically not intended for inclusion in the
> delivered version of the document. On the other hand, "significant"
> white space that should be preserved in the delivered version is
> common, for example in poetry and source code.
> </quote>
> 
> I interpret "significant" whitespaces as the ones between the words,

This interpretation is incorrect. It's not really possible to tell what
whitespace is significant from looking just at the document; the
classification into "significant" and "insignificant" is up to the
application, not the XML processor.

There is also the concept of "ignorable" white space in SAX (and other
APIs); by this, white space in element content is meant. This is
supported by the XML recommendation with the sentence
"A  validating XML processor  MUST also inform the application which of
these characters constitute white space appearing in element content."
(you can only know if it's in element content if you validate)

> We can assume that the spaces in front of it are not significant
> whitespaces.

No, we cannot. Maybe your application can assume that; the XML
processor cannot. In fact, the XML recommend FORBIDS the XML processor
from stripping white space.

> (etc) .. so when reading, modifying, writing XML files, the empty
> blank lines will grow exponentially.

Not sure why you keep saying that growth is exponentially; I believe
it's linear (with the number of read-write-cycles), not exponential.

> I would think (simplistic I'm sure) that if spaces are that important,
> you can always use a CDATA tag which should treat the text inside as
> raw data without any formatting and whitespace changes.

That is definitely simplistic. CDATA has no significance on formatting.

> Should I file this as a bug to be solved? I have my workaround now,
> but I read online that more people seem to have ran into this.

Feel free to come up with a patch. It is questionable whether a bug
report will help; there is a good chance that it stays open for several
years.

Regards,
Martin


From giovanni.porcari at gmail.com  Sun Oct  7 05:33:56 2007
From: giovanni.porcari at gmail.com (genro)
Date: Sun, 07 Oct 2007 02:33:56 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191738947.789865.33700@19g2000hsx.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1191677381.068666.65870@k79g2000hse.googlegroups.com>
	<4707be3e$0$26696$426a74cc@news.free.fr>
	<1191738947.789865.33700@19g2000hsx.googlegroups.com>
Message-ID: <1191749636.791505.3740@w3g2000hsg.googlegroups.com>

On Oct 7, 8:35 am, Michele Simionato <michele.simion... at gmail.com>
wrote:
> On Oct 6, 12:57 pm, Bruno Desthuilliers
>
> > Michele Simionato a ?crit :
>
> > > I looked at the source code and it seems fine to me, but I have
> > > not used it directly, not stressed it. I need a
> > > production-level WSGI session middleware and I wonder what the
> > > players are (for instance how Beaker does compare with flup?)
>
> > Can't tell, but I'd trust the Pylons team on this kind of choices.
> > They're doing good job so far AFAICT.
>
> Probably Beaker works well, but it is certainly NOT doing things
> as Eby recommends:
>
> http://dirtsimple.org/2007/02/wsgi-middleware-considered-harmful.html
>
> BTW, I know that Eby is asking opinions about WSGI 2.0 on the
> WSGI SIG and interested people may have a look there.
>
>            Michele Simionato


I think that Beaker is a Mako dependency.
So if you use Mako, Beaker is not an option  :)

G



From oruccim at gmail.com  Mon Oct  8 08:55:15 2007
From: oruccim at gmail.com (oruccim at gmail.com)
Date: Mon, 08 Oct 2007 12:55:15 -0000
Subject: Pil image module, "mode" bug..
In-Reply-To: <pan.2007.10.07.17.17.32.846495@vscht.cz>
References: <1191762186.617411.309700@g4g2000hsf.googlegroups.com>
	<pan.2007.10.07.13.47.31.978730@vscht.cz>
	<1191772929.299902.87760@g4g2000hsf.googlegroups.com>
	<pan.2007.10.07.17.17.32.846495@vscht.cz>
Message-ID: <1191848115.493859.70650@d55g2000hsg.googlegroups.com>

On Oct 7, 8:17 pm, Michal Bozon <boz... at vscht.cz> wrote:
> On Sun, 07 Oct 2007 09:02:09 -0700, Abandoned wrote:
> > On Oct 7, 4:47 pm, Michal Bozon <boz... at vscht.cz> wrote:
> >> On Sun, 07 Oct 2007 06:03:06 -0700, Abandoned wrote:
> >> > Hi..
> >> > I find the picture color with:
> >> > im=Image.open("/%s" %name)
> >> > color=im.mode   #p=black & beyaz rgb=color L=grey
>
> >> > This usually work true but in these pictures:
> >> >http://malatya.meb.gov.tr/images/alt/ilsis_logo.gif
> >> >http://malatya.meb.gov.tr/images/meb.gif
>
> >> > Say me P (black&white) but these pictures are color..
>
> >> > What is the reason of this ?
>
> >> > I'm sorry my bad english
>
> >> P does mean palette, black&white is a special case of palette, with two
> >> colors.
>
> > How can i understand the picture color ? (black &white or color or
> > grey)
>
> If you know how to work with RGB images, you can convert the image
> from the palette mode easily:
>
> img2 = img.convert(mode='RGB')
>
> Anyway, always is helpful to read the tutorial or basic documentation.. ;)
>
>  MB- Hide quoted text -
>
> - Show quoted text -

no no no this is not professionalism
are there anybody who know that



From kyosohma at gmail.com  Thu Oct 11 16:35:49 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Thu, 11 Oct 2007 13:35:49 -0700
Subject: problem with wxPanel derivation class
In-Reply-To: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
References: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
Message-ID: <1192134949.460502.42660@50g2000hsm.googlegroups.com>


You've got calls for properties in other classes and you don't
initialize the panel object. I edited the code somewhat so it'll at
least run. I tried to comment where I changed things, but I may have
missed a few minor points. See below:

<code>

 #The commented out code from MyFrame was moved to class Panel \
# and appropriately modified by changing self.panel to self etc

import wx

class MyFrameTwo(wx.Frame):
        def __init__(self, *args, **kwds):
                # begin wxGlade: MyFrameTwo.__init__
                kwds["style"] = wx.DEFAULT_FRAME_STYLE
                wx.Frame.__init__(self, *args, **kwds)
##              self.panel = panel(self, -1)
                self.panel = Panel(self, -1)
                self.__set_properties()
                self.__do_layout()
                # end wxGlade

        def __set_properties(self):
                # begin wxGlade: MyFrameTwo.__set_properties
                self.SetTitle("frame_1")
                # end wxGlade

        def __do_layout(self):
                # begin wxGlade: MyFrameTwo.__do_layout
                sizer_1 = wx.BoxSizer(wx.VERTICAL)
                sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
                self.SetAutoLayout(True)
                self.SetSizer(sizer_1)
                sizer_1.Fit(self)
                sizer_1.SetSizeHints(self)
                self.Layout()
                # end wxGlade

# end of class MyFrameTwo

class Panel (wx.Panel):
        def __init__(self, parent, *args, **kwds):
                wx.Panel.__init__(self, parent) # Added line
                self.staticbox = wx.StaticBox(self, -1, "StaticBox")
                self.label = wx.StaticText(self, -1, "Field Name")
                self.textBox = wx.TextCtrl(self, -1, "Field Value")
                self.button = wx.Button(self, -1, "Edit")
                self.__doLayout() # added self

        def __doLayout(self): # added argument
                sizer = wx.StaticBoxSizer(self.staticbox,
wx.HORIZONTAL)
                sizer.Add(self.label, 0, wx.ALL, 3)
                sizer.Add(self.textBox, 0, wx.ALL, 3)
                sizer.Add(self.button, 0, wx.ALL, 3)
                self.label.SetMinSize((-1, 15)) # moved from Frame

                # maybe comment this and uncommennt  frame2's
corresponding line
                self.SetAutoLayout(True)

                self.SetSizer(sizer)
                sizer.Fit(self)
                sizer.SetSizeHints(self)

## modified from BoaApp
class App(wx.App):
        def OnInit(self):
                wx.InitAllImageHandlers()
                self.main = MyFrameTwo(None)
                self.main.Show()
                self.SetTopWindow(self.main)
                return True

def main():
        application = App(0)
        application.MainLoop()

if __name__ == '__main__':
        main()


</code>

Larry is correct. You'll get better help from the wxPython group. See
http://wxpython.org/maillist.php

Mike



From bjourne at gmail.com  Mon Oct  8 05:09:16 2007
From: bjourne at gmail.com (=?ISO-8859-1?Q?BJ=F6rn_Lindqvist?=)
Date: Mon, 8 Oct 2007 11:09:16 +0200
Subject: pytz has so many timezones!
In-Reply-To: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
Message-ID: <740c3aec0710080209o4e04f4d8l40cc3b2efb4c4af9@mail.gmail.com>

On 10/8/07, Sanjay <skpatel20 at gmail.com> wrote:
> Hi All,
>
> I am using pytz.common_timezones to populate the timezone combo box of
> some user registration form. But as it has so many timezones (around
> 400), it is a bit confusing to the users. Is there a smaller and more
> practical set? If not, some suggestions on how to handle the
> registration form effectively would help me a lot.

Windows timezone selector only lists about 80 timezones. But why force
the user to select timezone? Let them select from a list of countries
and then infer the timezone from that data. With multiple alternatives
for countries with more than one timezone, United States EST, United
States PST and so on.

-- 
mvh Bj?rn


From duncan.booth at invalid.invalid  Tue Oct 16 14:55:22 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 16 Oct 2007 18:55:22 GMT
Subject: Getting error message/trace over the C API
References: <pan.2007.10.16.17.06.22.42783@hotmail.com>
Message-ID: <Xns99CBCAA67CC16duncanbooth@127.0.0.1>

Sami Vaisanen <ensiferum_ at hotmail.com> wrote:

> Hello group,
>  
> I'm writing a C++ based application that embeds the python engine. Now I
> have a problem regarding exception/error information. Is there a way to
> get the exception message and possibly the traceback into a string for
> example? I've been eyeballing the PyErr_ module and it seems fairly
> limited. In other words PyErr_Print() calls the right functions for
> getting the exception information but unfortunately it is hardwired to
> print this data directly into sys.stderr, and for an embedded application
> this is completely inappropriate. 
>  
>  
> Please advice how to do this.
> 
All you have to do is call whatever functions you would call from Python. 
e.g. from C you need to import traceback, then call getattr to get the 
appropriate function (e.g. format_exc or format_exception), then just call 
it.


From deets at nospam.web.de  Wed Oct 24 11:28:26 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 24 Oct 2007 17:28:26 +0200
Subject: How to find out which functions exist?
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
	<5o76tgFld8c9U10@mid.uni-berlin.de>
	<1193176280.003067.269950@i13g2000prf.googlegroups.com>
	<5o7bp5Fld8c9U12@mid.uni-berlin.de>
	<1193238542.066171.187950@q3g2000prf.googlegroups.com>
Message-ID: <5o96kqFlslabU1@mid.uni-berlin.de>

mrstephengross wrote:

>> import module
>> from inspect import getmembers, isclass
>> classes = getmembers(module, isclass)
> 
> Ok, this makes sense. How can I do it inside the .py file I'm working
> on? That is, consider this:
> 
>   class A:
>     pass
>   class B:
>     pass
>   import inspect
>   print inspect.getmembers(<this file>, inspect.isclass) # how can I
> express <this file> ?

Then you can use globals(), like this:

classes = [v for v in globals().values() if isclass(v)]

Diez


From arnodel at googlemail.com  Mon Oct  1 16:59:25 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Mon, 01 Oct 2007 13:59:25 -0700
Subject: Using fractions instead of floats
In-Reply-To: <slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191254961.729631.256760@22g2000hsm.googlegroups.com>
	<slrnfg2bhk.23g.horpner@FIAD06.norwich.edu>
Message-ID: <1191272365.225974.41660@w3g2000hsg.googlegroups.com>

On Oct 1, 6:26 pm, Neil Cerutti <horp... at yahoo.com> wrote:
> On 2007-10-01, Arnaud Delobelle <arno... at googlemail.com> wrote:
>
> > Finally, arithmetic would become very confusing if there were
> > three distinct numeric types; it already causes enough
> > confusion with two!
>
> Scheme says: It's not that bad.

Scheme has prefix numeric operators, so that 1/2 is unambiguously (for
the interpreter and the user) a litteral for 'the fraction 1/2'. You
can't avoid the confusion in python, as binary operators are infix. Of
course, we could create a new kind of litteral.  Let's see, / and //
are already operators, so why not use /// ? ;)

--
Arnaud




From gnewsg at gmail.com  Tue Oct 16 08:58:10 2007
From: gnewsg at gmail.com (Giampaolo Rodola')
Date: Tue, 16 Oct 2007 05:58:10 -0700
Subject: Integrating a GUI with an asyncore-based server
Message-ID: <1192539490.070370.244610@v29g2000prd.googlegroups.com>

Hi there.
Just for the heck of it I'd like to write a simple front-end for an
asyncore-based server I wrote by using Tkinter.
I wrote a simple graphical interface consisting of two buttons: "Start
server" and "Stop server".
The first button should start the asyncore main loop while the second
should obviously stop it.
Actually I can't find a valid solution for doing such a stuff since
this is the first time I'm using a GUI toolkit.
Which is the best approach to use in such case?
Could someone point me in the right direction?



From Erik-wikstrom at telia.com  Mon Oct  1 06:52:03 2007
From: Erik-wikstrom at telia.com (=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?=)
Date: Mon, 01 Oct 2007 10:52:03 GMT
Subject: which language allows you to change an argument's value?
In-Reply-To: <47000ed3$0$90272$14726298@news.sunsite.dk>
References: <1191149233.346818.246170@22g2000hsm.googlegroups.com>
	<P3MLi.10035$ZA.6750@newsb.telia.net>
	<47000ed3$0$90272$14726298@news.sunsite.dk>
Message-ID: <nj4Mi.10135$ZA.6782@newsb.telia.net>

On 2007-09-30 23:03, Arne Vajh?j wrote:
> Erik Wikstr?m wrote:
>>> their reference (alias) mechanism.  And C, Python, and Ruby probably
>>> won't let you do that.  What about Java and Perl?
>> 
>> C will let you do it with pointers (it is just a syntactical difference
>> from references in this case) and Java's references allows it.
> 
> Neither C or Java has call by reference.

I never said that, what I said was that C allows you to simulate it by
passing pointers instead, and since you always use references in Java
(except for primitive types) you always pass a reference.

> C pointers and Java references may work similarly in most cases
> but it is still call by value.

The difference I am trying to show is that between value semantics
(where a copy of the parameter is used in the function) verses reference
semantics where you pass a reference to the object. It is true that when
using a pointer in C you pass a copy of the pointer, but not of the
object it refers to. Similarly you might pass a copy of the variable
holding a reference in Java, but not a copy of the object it refers to.
Thus, in the function you will be working on the referred object, just
like when passing by reference in C++.

>> know about Ruby, Python and Perl, but (AFAIK) the all have OO support so
>> I would be surprised if they used purely value semantics.
> 
> I can not see why OO should indicate anything about call by reference
> support.

There is no direct connection, except that all OO programming languages
that I know of supports reference semantics. You seldom want to work on
copies of objects, rather you want to work on the original object and
for that you need to be able to refer to it, for that you need some kind
of reference.

>>> isn't "what i pass in, the function can modify it" not a desireable
>>> behavior if i am NOT passing in the address of my argument?  For one
>> 
>> Being able to pass the actual object instead of a copy is highly
>> desirable for two reasons. In most languages only one return value is
>> allowed for a function so the ability to change parameters allows you to
>> artificially return more without having to wrap them in constructs. The
>> second reason is that for large objects the performance hit of having to
>> create a copy each time you call a function can be forbidding.
> 
> Usually it is not a good thing, because it makes the code much
> more difficult to read.
> 
> But sometimes it is handy.
> 
> I think C# got it right.
> 
> It allows it but require an explicit marking of it in both formal
> argument list and actual argument list.

I think you are confusing two different things here, one is the ability
to pass a reference to an object, instead of a copy of the object. This
is what C++ references allows you to do, just like Java references, C
pointers, and any other kind of references that I know about.

The other thing is to allow the function to change what a reference
refers to, to this not possible with C++ references, C pointers, Java
references, or most other reference types that I know about. You can do
this by using a reference to a pointer in C++, a pointer to a pointer in
C, or using the ref and out keywords in C#. Doing that can be confusing,
but often the semantics for doing so are pretty obvious.

>>> Java, Python, and Ruby, and we pass in a reference to object (not C+
>>> +'s meaning of alias reference)
>> 
>> In what way does the C++ reference differ from those in Java, Python,
>> and Ruby in this situation?
> 
> C++ and Java are very different in this aspect.

Might be, my question was about what aspect we are talking about.

-- 
Erik Wikstr?m


From slobodan.blazeski at gmail.com  Sun Oct 21 14:11:08 2007
From: slobodan.blazeski at gmail.com (Slobodan Blazeski)
Date: Sun, 21 Oct 2007 11:11:08 -0700
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192929647.405490.318720@v29g2000prd.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<1192929647.405490.318720@v29g2000prd.googlegroups.com>
Message-ID: <1192990268.185865.34550@t8g2000prg.googlegroups.com>

On Oct 20, 6:20 pm, Daniel Pitts <googlegrou... at coloraura.com> wrote:
> On Oct 20, 2:04 pm, llothar <llot... at web.de> wrote:
>
> > > I love math. I respect Math. I'm nothing but a menial servant to
> > > Mathematics.
>
> > Programming and use cases are not maths. Many mathematics are
> > the worst programmers i've seen because they want to solve things and
> > much more often you just need heuristics. Once they are into exact
> > world they loose there capability to see the factor of relevance in
> > algorithms.
>
> > And they almost never match the mental model that the average
> > user has about a problem.
>
> I read somewhere that for large primes, using Fermat's Little Theorem
> test is *good enough* for engineers because the chances of it being
> wrong are less likely than a cosmic particle hitting your CPU at the
> exact instant to cause a failure of the same sort.  This is the
> primary difference between engineers and mathematicians.

Carmichael number are the ones who are making the problem , but they
are very rare.
There are 1,401,644 Carmichael numbers between 1 and 1018
(approximately one in 700 billion numbers.)
http://en.wikipedia.org/wiki/Carmichael_number If you want to be sure
use Miller-Rabin test.

Slobodan Blazeski



From bj_666 at gmx.net  Thu Oct 11 08:27:35 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 12:27:35 GMT
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
Message-ID: <5n6j5nFghr61U4@mid.uni-berlin.de>

On Thu, 11 Oct 2007 11:48:18 +0000, Artur Siekielski wrote:

> class Person(object):
>    def __init__(self, name):
>       self._name = name
>    def _get_name(self):
>       return self._name
>    def _set_name(self, new_name):
>       self._name = new_name
>    name = property(_get_name, _set_name)

This is more easily spelled:

class Person(object):
    def __init__(self, name):
        self.name = name

> I would like to have something like that:
> 
> class Person(object):
>    name = property('_name')
> 
> I assume that this causes "generation" of instance field '_name' and
> default getters and setters.

But why?  Default getters and setters are unnecessary and if you need
something other than the default you need to write it anyway more
explicitly.

Ciao,
	Marc 'BlackJack' Rintsch


From greg.ewing at canterbury.ac.nz  Wed Oct 17 05:12:37 2007
From: greg.ewing at canterbury.ac.nz (Greg Ewing)
Date: Wed, 17 Oct 2007 22:12:37 +1300
Subject: ANN: Pyrex 0.9.6.3
Message-ID: <mailman.127.1192636224.13605.python-announce-list@python.org>

Pyrex 0.9.6.3 is now available:

   http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/

Main features of this release:

   * The C API now uses just one name in the module namespace,
     instead of a name per C function.

   * The 'cdef' keyword and following extern/public/api qualifiers
     can be factored out of a group of declarations and made into
     a block header, e.g.

       cdef public:
         int spam
         float ftang
         void tomato()

   * A 3-argument form of the builtin getattr function has been
     added, called getattr3().


What is Pyrex?
--------------

Pyrex is a language for writing Python extension modules.
It lets you freely mix operations on Python and C data, with
all Python reference counting and error checking handled
automatically.


From abarun22 at gmail.com  Mon Oct 29 11:50:42 2007
From: abarun22 at gmail.com (abarun22 at gmail.com)
Date: Mon, 29 Oct 2007 08:50:42 -0700
Subject: swig-python -> shared (vs) static libraries
Message-ID: <1193673042.619768.41620@q3g2000prf.googlegroups.com>

HI
I am new to SWIG & Python and right now i am in the process of
wrapping some "C" functionalities present in a static library for
python. I do have my C file "name.c" which just contains some helper
functions.
I tried to link my object files (e.g name.o & name_wrap.o) with the
static libraries (whose functionalities need to be wrapped) to form a
shared library that can be imported from Python. While doing so i
cannot be able to access the C data structure from Python and i got
all values as zero. I work in Linux gcc version.
I created my shared object like this:
ld -G name.o name_wrap.o -o _name.so -Bstatic -lfoo1 -lfoo2 -lfoo3.
On the other hand to dig more in to this i tried to simulate the
static libraries with simple dummy code in my file "name.c" so that i
can avoid linking the static libraries. This case i could be able to
retrieve the vaues of the data structure. I wonder if the problem
could be due to linking of the static libraries to create the shared
object.
Any body experienced the same problem or having related ideas pls help
me.
Best regards
Arun



From irmen.NOSPAM at xs4all.nl  Thu Oct 11 19:35:36 2007
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Fri, 12 Oct 2007 01:35:36 +0200
Subject: RMI with Pyro et al
In-Reply-To: <5n6pauFgghv4U1@mid.uni-berlin.de>
References: <mailman.77.1192108312.927.python-list@python.org>
	<5n6pauFgghv4U1@mid.uni-berlin.de>
Message-ID: <470eb354$0$231$e4fe514c@news.xs4all.nl>

Diez B. Roggisch wrote:

> Go install cygwin (but not it's included python-interpreter, or at least
> make sure you have your python path properly under control) and then simply
> start the script from the command-line. And hit C-c if you need it to stop,
> and restart it. Only start it as service if it's deployed.

What's cygwin got to do with it?
-irmen


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct 18 04:23:42 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 08:23:42 -0000
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
	<mailman.161.1192686567.13605.python-list@python.org>
Message-ID: <13he60e4vc6i753@corp.supernews.com>

On Thu, 18 Oct 2007 02:49:12 -0300, Gabriel Genellina wrote:

> A reversed object is rather simple: it stores the original sequence (a
> reference, as usual, not a copy!) and the next index to use, starting at
> len-1. Each time the next() method is called, the index is decremented
> until it goes below 0.

...

> Note that the starting index is determined at creation time, not when
> the iteration begins. So, if you create a reversed object over a list
> containing 3 elements, the first returned element will be seq[2], then
> seq[1], then seq[0]. It doesn't matter if you modify the list after
> creating the reversed object but before starting the iteration: it will
> start at seq[2] even if it's not the last item, and will silently stop
> if seq[2] is not a valid index anymore.

You know, that's probably the *least* intuitive behaviour possible.

For reversed() to iterate over the input as it was at creation time is a 
reasonable design choice; for it to iterate over the input as it is at 
call time is also a reasonable design choice; but for it to iterate over 
some unholy mutant melding of the sequence as-it-was and as-it-is is 
simply bizarre. I hope it just fell out of the implementation and wasn't 
a deliberate design choice.


-- 
Steven.


From gneuner2/ at /comcast.net  Thu Oct 11 03:18:34 2007
From: gneuner2/ at /comcast.net (George Neuner)
Date: Thu, 11 Oct 2007 03:18:34 -0400
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<85zlyrutux.fsf@lola.goethe.zz>
Message-ID: <rqhrg3d2thcqaip790k1eb6t8cdk2g8d8v@4ax.com>

On Wed, 10 Oct 2007 12:49:58 +0200, David Kastrup <dak at gnu.org> wrote:

>gnuist006 at gmail.com writes:
>
>> Again I am depressed to encounter a fundamentally new concept that I
>> was all along unheard of. Its not even in paul graham's book where i
>> learnt part of Lisp. Its in Marc Feeley's video.
>>
>> Can anyone explain:
>>
>> (1) its origin
>> (2) its syntax and semantics in emacs lisp, common lisp, scheme
>> (3) Is it present in python and java ?
>> (4) Its implementation in assembly. for example in the manner that
>> pointer fundamentally arises from indirect addressing and nothing new.
>> So how do you juggle PC to do it.
>> (5) how does it compare to and superior to a function or subroutine
>> call. how does it differ.
>
>Basically, there is no difference to function/subroutine call.  The
>difference is just that there is no "call stack": the dynamic context
>for a call is created on the heap and is garbage-collected when it is
>no longer accessible.  A continuation is just a reference to the state
>of the current dynamic context.  As long as a continuation remains
>accessible, you can return to it as often as you like.

Yes and no.  General continuations, as you describe, are not the only
form continuations take.  Nor are they the most common form used.  The
most common continuations are function calls and returns.  Upward
one-shot continuations (exceptions or non-local returns) are the next
most common form used, even in Scheme.

Upward continuations can be stack implemented.  On many CPU's, using
the hardware stack (where possible) is faster than using heap
allocated structures.  For performance, some Scheme compilers go to
great lengths to identify upward continuations and nested functions
that can be stack implemented.

George
--
for email reply remove "/" from address


From nagle at animats.com  Sun Oct  7 12:41:17 2007
From: nagle at animats.com (John Nagle)
Date: Sun, 07 Oct 2007 09:41:17 -0700
Subject: Top Programming Languages of 2013
In-Reply-To: <mailman.1623.1191743451.2658.python-list@python.org>
References: <20071007060510.5DC811E4006@bag.python.org>
	<mailman.1623.1191743451.2658.python-list@python.org>
Message-ID: <xN7Oi.2659$y21.1078@newssvr19.news.prodigy.net>

Alan Gauld wrote:
> 
> "Dick Moores" <rdm at rcblue.com> wrote
>> <http://www.redcanary.ca/view/top-programming>
>>
> 
> Interesting, but I'm not sure what the criteria for "top" is.
> Is it a measure of power, popularity, usage?
> 
> Scary that HTML/CSS should be so high though given its not a programming 
> language at all!

     Half of those aren't programming languages.  They have ".NET",
"HTML/CSS", and "AJAX".

     If you combine ".NET" and "C#", that's the platform with the
most points.

     The survey asks a question worth thinking about, but doesn't
ask it very well.

				John Nagle


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 22 14:15:22 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 22 Oct 2007 20:15:22 +0200
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
Message-ID: <471ce8ed$0$7496$426a34cc@news.free.fr>

Sunburned Surveyor a ?crit :
> I was thinking of a way I could make writing Python Class Files

What's a "Python Class File" ?

> a
> little less painful.

If you find writing classes in Python "painful", then either you have no 
experience with any mainstream language or you are doing something wrong.

> I was considering a Ptyhon script that read a
> file with a list of property names and method names and then generated
> a skeleton class file.

Once again, there's no such thing as a "class file" in Python. A module 
usually contains several (classes, functions etc) definitions. And since 
there's very few boilerplate code in Python, I don't see what your 
system would be good for - directly writing the code will not take much 
more time than writing the "file with a list of property names and 
method names".

My 2 cents...


From mensanator at aol.com  Wed Oct 24 19:28:20 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Wed, 24 Oct 2007 16:28:20 -0700
Subject: list (range) syntax
In-Reply-To: <pan.2007.10.24.22.44.28.712782@vscht.cz>
References: <pan.2007.10.24.22.44.28.712782@vscht.cz>
Message-ID: <1193268500.077940.182790@y27g2000pre.googlegroups.com>

On Oct 24, 5:44 pm, Michal Bozon <boz... at vscht.cz> wrote:
> many Python newcomers are confused why
> range(10), does not include 10.

How can they be confused?

Does base 10 have a digit ten?
Does base  2 have a digit two?
Does base 16 have a digit sixteen?

Haven't you stopped counting on your fingers when
you leave grade school?

>
> If there was a proposal for the new
> syntax for ranges, which is known
> e.g. from Pascal or Ruby...
>
> >>> [0..10]
>
> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>
> ...is there a chance to be approved ?

"These go to 11."

>
> We have had a short discussion on it
> at the irc, I hope that the fact
> that nobody agreed it is a good idea
> was just an accident :)

Wait a minute...comp.lang.python. I must have
accidentally gotten into the wrong newsgroup.

>
>  -m.
>
> PS:
> to dream further..
>
> >>> (0..10)
>
> <generator object at 0xb7618dac>
>
> or
>
> >>> (0..10)
>
> (0..10)
>
> or
>
> >>> (0..10)
>
> range(0, 11)




From theller at ctypes.org  Fri Oct 19 16:25:19 2007
From: theller at ctypes.org (Thomas Heller)
Date: Fri, 19 Oct 2007 22:25:19 +0200
Subject: Is there a way to tell if a script has been run by Pythonw.exe
	instead of Python.exe?
In-Reply-To: <1192824956.933289.23100@z24g2000prh.googlegroups.com>
References: <1192744576.899687.93650@k35g2000prh.googlegroups.com>	<1192788028.503824.52800@i13g2000prf.googlegroups.com>
	<1192824956.933289.23100@z24g2000prh.googlegroups.com>
Message-ID: <ffb3rf$94q$1@ger.gmane.org>

Metalone schrieb:
> Thanks to all, I learned something in each post.
> When using py2exe to build an executable sys.executable does not
> provide the name of the python interpreter but the name of the
> executable generated by py2exe.
> 

When running the executable built with py2exe you might be interested
in the variable sys.frozen; they are set to the string 'console' or 'windows', IIRC.

Thomas



From dokondr at gmail.com  Sun Oct 14 17:06:19 2007
From: dokondr at gmail.com (Dmitri O.Kondratiev)
Date: Mon, 15 Oct 2007 01:06:19 +0400
Subject: Newbi Q: Recursively reverse lists but NOT strings?
Message-ID: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>

The function I wrote (below) reverses lists all right:

def reverse(xs):
    if xs == []:
        return []
    else:
        return (reverse (xs[1:])) + [xs[0]]


>>> reverse ([1,2,3])
[3, 2, 1]
>>>


Yet when I try to reverse a string I  get:

>>> reverse ("abc")

...
...
...

  File "C:\wks\python-wks\reverse.py", line 5, in reverse

    return (reverse (xs[1:])) + [xs[0]]

  File "C:\wks\python-wks\reverse.py", line 5, in reverse

    return (reverse (xs[1:])) + [xs[0]]

  File "C:\wks\python-wks\reverse.py", line 2, in reverse

    if xs == []:

RuntimeError: maximum recursion depth exceeded in cmp

>>>

What's wrong? Why recursion never stops?

Thanks,
Dima
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071015/6f989723/attachment.html>

From stargaming at gmail.com  Sat Oct 13 01:38:05 2007
From: stargaming at gmail.com (Stargaming)
Date: 13 Oct 2007 05:38:05 GMT
Subject: Observer implementation question ('Patterns in Python')
References: <1192226868.588324.253790@y27g2000pre.googlegroups.com>
	<fep1ev$k57$1@daisy.noc.ucla.edu>
Message-ID: <471059bd$0$22868$9b622d9e@news.freenet.de>

On Fri, 12 Oct 2007 16:55:05 -0700, James Stroud wrote:

[snip]
> The use of __iadd__ & __isub__ as described in the article allows a neat
> shorthand, but does not function correctly in the context of new style
> classes.
> 
> James

But still, this call on a descriptor::

    obj.descr += val

is resolved into::

    descr.__get__(obj, obj.__class__).__iadd__(val)

under the condition that ``descr.__get__``'s return value supports 
`__iadd__`. After this is fully evaluated, `__set__` gets issued (as in 
``descr.__set__(obj, descr_get_iadd_stuff_here)``).

Besides, you could perfectly do this without any descriptors at all::

    class E(object):
        def __iadd__(self, val):
            print "__iadd__(%s, %s)" % (self, val)
    class C(object):
        e = E()
    c = C()
    c.e += 42
    # __iadd__(<__main__.E object at 0x...>, 42)

Adding `__call__` to this implementation should be easy.

HTH,
Stargaming


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct  8 08:04:49 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 08 Oct 2007 14:04:49 +0200
Subject: Declarative properties
In-Reply-To: <mailman.142.1192215368.927.python-list@python.org>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>	<5n6j5nFghr61U4@mid.uni-berlin.de>	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>	<5n6np4Fghr61U6@mid.uni-berlin.de>	<mailman.99.1192124809.927.python-list@python.org>	<470f2522$0$12106$426a74cc@news.free.fr>
	<mailman.142.1192215368.927.python-list@python.org>
Message-ID: <471127ff$0$23285$426a74cc@news.free.fr>

Dan Stromberg a ?crit :
(snip)
> My implementation may or may not be lacking (feel free to improve it - in
> fact, please do!), 

Since you ask for it:

def makeprop(name):
     _name = '_' + name
     def fget(self):
         return getattr(self, _name, None)
     def fset(self, val):
         setattr(self, _name, val)
     return property(fget, fset)

class AutoPropType(type):
     def __init__(cls, clsname, bases, attribs):
         for name in cls._autoprops:
             if name not in attribs:
                 setattr(cls, name, makeprop(name))

class Demo(object):
     __metaclass__ = AutoPropType
     _autoprops = ('foo', 'bar', 'baaz')

     def __init__(self, foo, bar=42, baaz='ni'):
         self.foo = foo
         self.bar = bar
         self.baaz = baaz

d = Demo('yadda yadda')


 > but that's irrelevant to the heart of the matter, which
 > is "what you didn't think to plan for now most definitely can hurt you
 > later".

Ahem... Please let me know, Mr Professor, what difference it would make, 
from client code's POV, if we simply wrote this instead:

class Demo(object):
     def __init__(self, foo, bar=42, baaz='ni'):
         self.foo = foo
         self.bar = bar
         self.baaz = baaz


(snip more blah)

> Little hackish tricks for performance's sake scattered throughout a
> program are very wasteful of something more precious than CPU time.

Indeed. The point you're missing is that, in a language that supports 
computed attributes, using plain attributes when that's all you need is 
*not* a 'litlle hackish trick'. It's just common sense - and actually 
saves on *both* programmer's and CPU time.


From erik at myemma.com  Thu Oct 25 10:46:54 2007
From: erik at myemma.com (Erik Jones)
Date: Thu, 25 Oct 2007 09:46:54 -0500
Subject: Parallel insert to postgresql with thread
In-Reply-To: <13i12q276igp0df@corp.supernews.com>
References: <1193310044.750654.157320@22g2000hsm.googlegroups.com>
	<5obctcFm7sogU1@mid.uni-berlin.de>
	<13i12q276igp0df@corp.supernews.com>
Message-ID: <56EDD026-3AED-4341-BCE3-8B028598C5CE@myemma.com>


On Oct 25, 2007, at 7:28 AM, Scott David Daniels wrote:

> Diez B. Roggisch wrote:
>> Abandoned wrote:
>>
>>> Hi..
>>> I use the threading module for the fast operation. But ....
> [in each thread]
>>> def save(a,b,c):
>>>             cursor.execute("INSERT INTO ...
>>>             conn.commit()
>>>             cursor.execute(...)
>>> How can i insert data to postgresql the same moment ?...
>>
>> DB modules aren't necessarily thread-safe. Most of the times, a  
>> connection
>> (and of course their cursor) can't be shared between threads.
>>
>> So open a connection for each thread.
>
> Note that your DB server will have to "serialize" your inserts, so
> unless there is some other reason for the threads, a single thread
> through a single connection to the DB is the way to go.  Of course
> it may be clever enough to behave "as if" they are serialized, but
> mostly of your work parallelizing at your end simply creates new
> work at the DB server end.

Fortunately, in his case, that's not necessarily true.  If they do  
all their work with the same connection then, yes, but there are  
other problems with that as mention wrt thread safety and psycopg2.   
If he goes the recommended route with a separate connection for each  
thread, then Postgres will not serialize multiple inserts coming from  
separate connections unless there is something like and ALTER TABLE  
or REINDEX concurrently happening on the table.  The whole serialized  
inserts thing is strictly something popularized by MySQL and is by no  
means necessary or standard (as with a lot of MySQL).

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From ihatespam at hotmail.com  Mon Oct 22 17:29:34 2007
From: ihatespam at hotmail.com (Just Another Victim of the Ambient Morality)
Date: Mon, 22 Oct 2007 21:29:34 GMT
Subject: Need help parsing with pyparsing...
References: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>
	<1193070904.326690.49360@i38g2000prf.googlegroups.com>
Message-ID: <1D8Ti.36558$e72.18991@fe07.news.easynews.com>


"Paul McGuire" <ptmcg at austin.rr.com> wrote in message 
news:1193070904.326690.49360 at i38g2000prf.googlegroups.com...
> On Oct 22, 4:18 am, "Just Another Victim of the Ambient Morality"
> <ihates... at hotmail.com> wrote:
>>     I'm trying to parse with pyparsing but the grammar I'm using is 
>> somewhat
>> unorthodox.  I need to be able to parse something like the following:
>>
>> UPPER CASE WORDS And Title Like Words
>>
>>     ...into two sentences:
>>
>> UPPER CASE WORDS
>> And Title Like Words
>>
>>     I'm finding this surprisingly hard to do.  The problem is that 
>> pyparsing
>> implicitly assumes whitespace are ignorable characters and is (perhaps
>> necessarily) greedy with its term matching.  All attempts to do the
>> described parsing either fails to parse or incorrectly parses so:
>>
>> UPPER CASE WORDS A
>> nd Title Like Words
>>
>>     Frankly, I'm stuck.  I don't know how to parse this grammar with
>> pyparsing.
>>     Does anyone know how to accomplish what I'm trying to do?
>>     Thank you...
>
> By the way, are these possible data lines?:
>
> A Line With No Upper Case Words
> A LINE WITH NO TITLE CASE WORDS
> SOME UPPER CASE WORDS A Title That Begins With A One Letter Word

    Thank you for your kind help!
    Unfortunately, there are some ambiguities but, hopefully and surely, 
they'll be very rare.  There will always be an uppercase section followed by 
a non-uppercase section.  So, your examples will parse like so:

A
Line With No Upper Case Words

    ...the second example will result in a parse error...

SOME UPPER CASE WORDS A
Title That Begins With A One Letter Word

    Occasional errors can be tolerated.  My problem was that my posted 
problem happened all the time which, of course, is not tolerable.  The 
ambiguities you bring up, especially the last one, are interesting and I'm 
not sure how to deal with them without an English grammatical analysis, 
which is too much, especially if I'm to integrate it with pyparsing.
    Another problem involves the ambiguity of numbers.  Some more examples, 
if you're interested:

FAHRENHEIT 451 2000 Copies Sold
1984 Book Of The Year

    The last example is actually okay but the first one is honestly 
ambiguous.
    Thanks again...





From ricaraoz at gmail.com  Sun Oct  7 07:53:37 2007
From: ricaraoz at gmail.com (=?ISO-8859-1?Q?Ricardo_Ar=E1oz?=)
Date: Sun, 07 Oct 2007 08:53:37 -0300
Subject: [Tutor] Top Programming Languages of 2013
In-Reply-To: <fea2hj$t2g$1@sea.gmane.org>
References: <20071007060510.5DC811E4006@bag.python.org>
	<fea2hj$t2g$1@sea.gmane.org>
Message-ID: <4708C8C1.1020704@bigfoot.com>

Alan Gauld wrote:
> "Dick Moores" <rdm at rcblue.com> wrote 
> 
>> <http://www.redcanary.ca/view/top-programming>
>>
> 
> Interesting, but I'm not sure what the criteria for "top" is.
> Is it a measure of power, popularity, usage?
> 
> Scary that HTML/CSS should be so high though 
> given its not a programming language at all!
> 
> Alan G.
> 

Besides all that, we are programmers not fashion models. Who cares which
is the "top" language, leave that for the "top models" and such. Our
trade is code, not fashion.




From Shawn at Milochik.com  Tue Oct  2 16:54:44 2007
From: Shawn at Milochik.com (Shawn Milochik)
Date: Tue, 2 Oct 2007 16:54:44 -0400
Subject: Algebraic Modules For Python
In-Reply-To: <47017be5.0335640a.2603.123d@mx.google.com>
References: <47017be5.0335640a.2603.123d@mx.google.com>
Message-ID: <2dc0c81b0710021354pa8452a4qc80e63e2455f69c3@mail.gmail.com>

On 10/1/07, Brandon McGinty <brandon.mcginty at gmail.com> wrote:
>
>
> Hi All,
> I know that there is probably a great deal of literature on this on the net,
> but I don't have any time to go searching.

<snip> --

> Brandon McGinty
> McGinty Soft Ltd.
> Website design, configuration, and maintenance
> Python and PHP coder
<snip>

So let me get this straight:

You label yourself as a coder for hire in Python, but you don't have
time to search the Internet for an answer to your own Python question?

Remind me to avoid McGinty Soft for any and all needs which might
require someone useful.


From james.b.looney at lmco.com  Wed Oct 31 11:04:19 2007
From: james.b.looney at lmco.com (Looney, James B)
Date: Wed, 31 Oct 2007 09:04:19 -0600
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <37fac3b90710310755y4252c0dai307b083ae4a39daf@mail.gmail.com>
References: <loom.20071031T132748-928@post.gmane.org>
	<1193844846.4728a06e52cb8@comuh.uh.cu>
	<37fac3b90710310755y4252c0dai307b083ae4a39daf@mail.gmail.com>
Message-ID: <BAA666C1E230E143BB9E839ED55EF19407AA6855@emss02m12.us.lmco.com>

I believe most programming languages evaluate 0 to mean False, and
anything else to be True (for the purposes of boolean evaluation).
Python is no exception.


________________________________

	From: python-list-bounces+james.b.looney=lmco.com at python.org
[mailto:python-list-bounces+james.b.looney=lmco.com at python.org] On
Behalf Of jelle feringa
	Sent: Wednesday, October 31, 2007 8:56 AM
	To: Luis Zarrabeitia
	Cc: python-list at python.org
	Subject: Re: shouldn't 'string'.find('ugh') return 0, not -1 ?
	
	
	There is a subtle point though.
	If the substring is not found '_'.find(' '), will return -1
	Semanticly, I was expecting the that if the substring was not
found, the conditional statement would not be found.
	However, python evaluates -1 to True, so that is what I do find
confusing.
	So, I was arguing that '_'.find(' ') might return 0, however
that is obviously ambigious, since 0 might be an index as well.
	 
	So, perhaps I should rephrase and ask, why if -1 evaluates to
True?
	I think that's pretty ugly...
	 
	cheers,
	 
	-jelle

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/476cced4/attachment.html>

From mccredie at gmail.com  Wed Oct  3 18:41:09 2007
From: mccredie at gmail.com (Matimus)
Date: Wed, 03 Oct 2007 22:41:09 -0000
Subject: Howto Launch a windows application ?
In-Reply-To: <mailman.1484.1191447580.2658.python-list@python.org>
References: <mailman.1484.1191447580.2658.python-list@python.org>
Message-ID: <1191451269.731350.134600@g4g2000hsf.googlegroups.com>


stef mientki wrote:
> hello,
>
> I'm trying to launch a windows application,
> but as many others on this list, I've some trouble.
> I read some other threads about this topic,
> but sorry, I still don't understand all this (never heard of pipes).
>
> When I use a batch file, I can launch the bat-file from python,
> and the windows application launched from the batchfile is run perfectly.
>
> Now when I try to run the same windows application from Popen or call,
> nothing happens (or at least it's very fast and produces not the
> expected output).
>
> Please enlighten me, preferable in "windows-terminology"  ;-)
>
> thanks,
> Stef Mientki
>
> from subprocess import *
>
> cmd =[]
> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
> cmd.append ( '-long-start' )
> cmd.append ( '-d')
> cmd.append ( '-clear' )
> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
> cmd.append ( 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>
> # DOESN'T WORK
> result = call ( cmd )
>
> # Both Popen and call work
> cmd = [ 'd:\\data_actueel\\d7_test_browser\\JALcc.bat' ]
> #output = Popen ( cmd )
> result = call ( cmd )
> print result

My guess is that with the redirect you simple need to set the 'shell'
option to true.

call(cmd, shell=True)

I haven't tested it, but it is worth a try.

Matt



From stef.mientki at gmail.com  Thu Oct  4 18:06:02 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Fri, 05 Oct 2007 00:06:02 +0200
Subject: Howto Launch a windows application ?
In-Reply-To: <fe16gk$l0t$1@news-int.gatech.edu>
References: <mailman.1484.1191447580.2658.python-list@python.org>
	<fe16gk$l0t$1@news-int.gatech.edu>
Message-ID: <470563CA.2010402@gmail.com>

Yu-Xi Lim wrote:
> stef mientki wrote:
>   
>> cmd =[]
>> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
>> cmd.append ( '-long-start' )
>> cmd.append ( '-d')
>> cmd.append ( '-clear' )
>> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
>> cmd.append ( 
>> 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
>> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>>     
>
> Your problem is probably the last line there with the '>'. That's an 
> output redirection that is done not by jalv2_3.exe but by the command 
> shell. That's why it works only with the batch file (which is 
> interpreted by the command shell.
>
>   
No that's not the problem,
leaving the redirection away,
gives the same problems.

> Using a batch file is probably easiest for this.
I think indeed  that's he simplest solution.
Still wonder why launching a windows program is "so difficult" in python 
;-)

thanks,
Stef Mientki
>  But I'm guessing you 
> probably want to change the command line arguments passed to the program 
> that's why you prefer to build the command line manually.
>
> In that case, there are a few solutions:
> 1) Generate the batch file programmatically.
> 2) Use cmd.exe /C (assuming you're on Windows XP). So your program would 
> be something like:
> cmd.append('cmd.exe')
> cmd.append('/C')
> cmd.append('"D:\\PIC-tools\\JALxxx\\jalv2_3.exe -long-start -d -clear 
> -sD:\\PIC-tools\\JAL\\libs2 
> d:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal 
>  >d:\\data_actueel\\d7_test_browser\\temp.log"')
> (or something like that)
> 3) Do the redirection yourself. Remove the line:
>   cmd.append ('>d:\\data_actueel\\d7_test_browser\\temp.log' )
> and instead read the results directly from the Popen.stdout. You can 
> then write the output to a file if you want.
>   



From nagle at animats.com  Wed Oct 10 13:17:40 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 10 Oct 2007 17:17:40 GMT
Subject: M2Crypto possible intermittent bug
In-Reply-To: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>
References: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>
Message-ID: <UO7Pi.11918$JD.8995@newssvr21.news.prodigy.net>

John Nagle wrote:
>   I just "upgraded" from M2Crypto 0.17 to M2Crypto 0.18, and I'm
> running my regression tests.  I'm seeing occasional cases where
> M2Crypto raises the exception SSL.SSLError, and the associated
> error is "(0, 'Error')", which is the bogus error you get if you feed 0 to
> "perror".  It failed once on "verisign.com"'s cert, then worked
> on the next try.
> 
>   This is on Windows, running Python 2.4 (which is what M2Crypto
> supports on Windows.)
> 
>   I'm trying to make this reproduceable.  More later.
> 
>                     John Nagle

    Still trying to reproduce this.  Every time except the first,
the regression test passed.  More later.  Might be an uninitialized
variable in a DLL, or something like that.

				John Nagle


From rdm at rcblue.com  Mon Oct 29 06:26:49 2007
From: rdm at rcblue.com (Dick Moores)
Date: Mon, 29 Oct 2007 03:26:49 -0700
Subject: Using msvcrt (in Windows), how to catch Enter key?
Message-ID: <20071029102729.9A2241E4012@bag.python.org>

Windows XP Pro, Python 2.5.1

import msvcrt
while True:
     if msvcrt.kbhit():
         key = msvcrt.getch()
         if key == 'Enter'
	 do something

Is there a way to catch the pressing of the 'Enter' key?

Thanks,

Dick Moores



From nagle at animats.com  Sun Oct 21 22:59:22 2007
From: nagle at animats.com (John Nagle)
Date: Sun, 21 Oct 2007 19:59:22 -0700
Subject: Problem with format string / MySQL cursor
In-Reply-To: <13hl4jomp8ubo86@corp.supernews.com>
References: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
	<1192736676.035569.188300@e9g2000prf.googlegroups.com>
	<mailman.189.1192738097.13605.python-list@python.org>
	<1192740053.589994.109050@q5g2000prf.googlegroups.com>
	<13hgqs4fdq7h76e@corp.supernews.com>
	<mailman.227.1192830637.13605.python-list@python.org>
	<13hktelmt556eb5@corp.supernews.com>
	<13hl4jomp8ubo86@corp.supernews.com>
Message-ID: <zmUSi.7667$lE2.4868@newssvr22.news.prodigy.net>

Dennis Lee Bieber wrote:

> 	I should also add that I'm still using a somewhat older MySQLdb (one
> reason I haven't upgraded Python to 2.5 series -- finding trusted binary
> builds of the third-party stuff is a pain...)

     What, you don't trust the build from a World of Warcraft guild?

					John Nagle


From gagsl-py2 at yahoo.com.ar  Wed Oct  3 01:31:44 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 02:31:44 -0300
Subject: Where to put the import command in the file?
References: <Xns99BDA81BBC0CDduncanbooth@127.0.0.1>
	<mailman.1403.1191343982.2658.python-list@python.org>
	<Xns99BDBC7A6D0E0duncanbooth@127.0.0.1>
	<BLU107-W57AFE6872542072915C3BB4AE0@phx.gbl>
Message-ID: <op.tzlwa6g5x6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 02 Oct 2007 19:01:27 -0300, wang frank <fw3 at hotmail.co.jp>  
escribi?:

> I am writing Python script now. The project will grow bigger in future.  
> I need to import some packages for several functions, such as numpy.  
> Where is the best plalce to put the import numpy command? Is it fine to  
> put on the first line in the file?

Yes, this is the usual way.

> Is it better to put it into each function after the def functionname? or  
> they are the same.

I only place an import inside a function when it's expensive (e.g. loads a  
lot of things) and not always required, or when it's irrelevant to the  
main purpose of the module (e.g. "import traceback" when it's used just to  
handle some special exceptions).

> Since numpy function will be used in all files, so I have to import it  
> in each files. Does this will increase the memory usuage or there are  
> better way to do it.

No. Only the first import actually has to load the module; later imports  
quickly return a reference to the already loaded module.

-- 
Gabriel Genellina



From exhuma at gmail.com  Fri Oct  5 05:26:38 2007
From: exhuma at gmail.com (exhuma.twn)
Date: Fri, 05 Oct 2007 02:26:38 -0700
Subject: Where's the Starship's crew?
In-Reply-To: <mailman.1567.1191573488.2658.python-list@python.org>
References: <mailman.1567.1191573488.2658.python-list@python.org>
Message-ID: <1191576398.250642.71010@w3g2000hsg.googlegroups.com>

On Oct 5, 10:31 am, Dick Moores <r... at rcblue.com> wrote:
> <http://starship.python.net/crew/index.html>
>
> I didn't check on all of them, but the only one I found was Mark
> Hammond <http://starship.python.net/crew/mhammond/>.
>
> Dick Moores

Doing 6 random clicks, revealed:

http://starship.python.net/crew/hooft/

all the others are dead links. I realised this fact as well some time
ago already. I thought the page itself was still "in development" and
did not find a single one page. These two obviously eluded me ;)

Strange to see that the situation did not yet improve. But then again,
we all probably know how much of a hassle it is to keep 10 different
web-pages with personal info's up-to-date. I suppose that the starship
crew all have som homes elsewhere and don't find the time to update
yet another page. I myself don't even bother anymore at all. I have
about 2 hours of free time per day (given that I like to sleep a
lot!). What makes things worse, the network at work is completely cut
off from the rest of the world for security reasons. I am happy that I
at least can access usenet by using google-groups *sigh*.

An interesting task might be to find the homes of the starship crew,
and post them here? Maybe? If lucky, the right person picks this up
and updates the crew-quarter labels of the starship. Or would
"Turbolift Buttons" be a better analogy for hyperlinks? Args.
Supposing, that these turbolifts *do* have buttons. How retro! ;)

I'm babbling again... sorry for this long winded post.



From aaron.watters at gmail.com  Tue Oct  9 09:14:25 2007
From: aaron.watters at gmail.com (aaron.watters at gmail.com)
Date: Tue, 09 Oct 2007 06:14:25 -0700
Subject: NUCULAR fielded text searchable indexing
In-Reply-To: <1191933994.473730.73100@22g2000hsm.googlegroups.com>
References: <1191875335.134872.302660@d55g2000hsg.googlegroups.com>
	<mailman.7.1191917068.916.python-list@python.org>
	<1191929178.103375.308840@50g2000hsm.googlegroups.com>
	<1191933994.473730.73100@22g2000hsm.googlegroups.com>
Message-ID: <1191935665.284553.110020@r29g2000hsg.googlegroups.com>

On Oct 9, 8:46 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
> ps. there is a python project named "The Devil Framework", I cringe
> every time I hear about it.Nucularis not as bad, but it is close.

Aw shucks.  I thought it was funny.  Can't I make fun of
politicians in my open source projects?  Besides there is
a great tradition of tounge-in-cheek package names, like
"Cold fusion", for example.

Actually one reason I chose it, is I own nucularOption.com and
also http://nucular.sourceforge.net was available.

too late now.  sorry again,
  -- Aaron Watters

===
It's humbling to think
that when Mozart was my age
he'd been dead for 10 years.
  -- Tom Lehrer



From lutz at rmi.net  Mon Oct 29 15:22:37 2007
From: lutz at rmi.net (Mark Lutz)
Date: Mon, 29 Oct 2007 12:22:37 -0700
Subject: ANN: Learning Python 3rd Edition
Message-ID: <1193685757.004590.163270@o38g2000hse.googlegroups.com>

I'm pleased to announce the release of the 3rd Edition of
the book Learning Python.

This new edition has been updated to cover Python 2.5, and
includes numerous pointers for migrating to Python 3.0 in the
future.  Among other things, this edition has been augmented
with material on function decorators, context managers, the
new relative import syntax, generator expressions, and more.

In addition, this edition has been enhanced to be even more
of a self-paced learning resource, with new end-of-chapter
quizzes, new introductory chapters on types and syntax, and
new materials derived from recent Python training sessions.

For more details, see O'Reilly's web page:

http://www.oreilly.com/catalog/9780596513986/

O'Reilly also has a press release about the book here:

http://press.oreilly.com/pub/pr/1843

Thanks,
--Mark Lutz



From torriem at chem.byu.edu  Sun Oct 28 19:41:08 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Sun, 28 Oct 2007 17:41:08 -0600
Subject: Pari Python
In-Reply-To: <c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>	<fg2o3n$q62$1@ger.gmane.org>
	<c038b2740710281619h69121178g69ca5bf056d9e912@mail.gmail.com>
Message-ID: <47251E14.6080803@chem.byu.edu>

Anton Mellit wrote:
> And I think (correct me if I am wrong) that the ^ operator (xor) is
> used very very infrequently. And it is not difficult to replace all ^
> with say ^^. The division is probably used more often, but python has
> this trend anyway - to replace division with 'true' division, so
> people should use // when they divide integers and expect an integer.

That's besides the point.  It *breaks* python, which is a problem.  How
can someone use your code with other third-party modules which may use
this operator?

> 
> Other than these two things (the second one does not require
> recompilation, so it is not so bad probably) I don't need any changes
> to python core. I agree that a standard must be standard.

With that in mind, why not implement your shell layer using pypy (python
on python). That way you can have a full python parser that you can
modify to your hearts content, running on an unmodified cpython core.
Or implement your own parser using pyparsing.

Or how about this:  Implement a shell in python that uses regex to
replace and translate PariPython syntax into python syntax, and then
evaluate it on the unmodified core.

There's got to be some solution that doesn't break python.   Of course
really you would be (and are) creating a new language.  Call it
PariPython or something.  Make a new file extension so people don't
confuse it with python.  like ".ppy" or something.


> 
> Anton



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 24 11:16:10 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 24 Oct 2007 17:16:10 +0200
Subject: Better writing in python
In-Reply-To: <1193236959.302628.244280@k35g2000prh.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193230962.271873.104900@v29g2000prd.googlegroups.com>
	<1193235331.202744.226950@q3g2000prf.googlegroups.com>
	<1193236959.302628.244280@k35g2000prh.googlegroups.com>
Message-ID: <471f61b8$0$26734$426a74cc@news.free.fr>

cokofreedom at gmail.com a ?crit :
(snip)
> Anyone know why towards arg is True and arg is False, arg is None is
> faster than arg == None ...

Perhaps reading about both the meaning of the 'is' operator might help ? 
  the expression 'arg is True' will only eval to true if 'id(arg) == 
id(True)'. Now Python objects does have a truth value by themselves. So 
an object can eval to false in a boolean test *without* being the False 
object itself.

For the record, True and False are late additions to the language - at 
first, it only had truth values of objects, basically defined as 'empty 
sequences and containers, numeric zeros and None are false, anything 
else is true unless either:
- the class implements the __len__ magic method and len(obj) == 0
- the class implements the magic method __non_zero__ (IIRC) and this 
obj.__non_zero__ returns false.

So the common idiom is to test the truth value of an object, which is 
expressed as "if obj: " - using 'if obj == True:' being redundant and 
'if obj is True:' usually not what you want.

wrt/ None: Since being None is not the same thing as being false (even 
if the first imply the second) - there may be cases where you want to 
distinguish between an object with a false truth value from the None 
object itself - so you can't just use 'if not obj:'. Now since None is 
garanteed to be a singleton, it defines it's __cmp__ (the magic method 
for '==') as an identity test. So directly using the identity test is 
faster since it yields the exact same result as the equality test 
without the overhead of the additional method call.




From http  Sun Oct 14 19:01:42 2007
From: http (Paul Rubin)
Date: 14 Oct 2007 16:01:42 -0700
Subject: Order of tuples in dict.items()
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
	<13h55uj8pogd4ea@corp.supernews.com>
Message-ID: <7x8x655mi1.fsf@ruckus.brouhaha.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
> I've never seen the point of a sorted dictionary, it's easy to just say:
> for key, value in sorted(D.items())

You might want just a subrange of the dictionary (say the 100th
through 150th items in sorted order) without having to sort the entire
dictionary.

Also, with the right data structures you can support fast non-mutating
updates, i.e.

    e = d.updated(x=3)

is equivalent to:

    e = dict((x,y) for x,y in d.iteritems())   # copy all entries from d
    e[x] = 3  # do the update

but the sorted version can work in O(log n) time instead of O(n).  The
new dictionary shares most of its contents with the old dictionary,
except now you can no longer mutate one without mutating the other, so
better not do any in-place updates.

Usage case (inspired by Happs State which was inspired by Prevayler):
You are writing a web app that has to remember a lot of request data
and you don't want to use an SQL database (too much overhead).  Your
app gets requests containing name/value pairs.  It responds with the
old value and then updates its stored value.  I.e. your server process
looks like:

   d = {}
   while True:
      name, new_value = get_request()
      old_value = d.get(name, None)
      d[name] = new_value
      send_response(old_value)

This is very efficient (just in-memory dictionary access, no SQL
garbage) but has any obvious problem: what if the computer crashes?
You have to store the stuff on disk, too.  So you put:

     log_to_disk(name, new_value)

right after the get_request.  If the computer crashes, reboot it and
play back the log from the beginning.

But that's no good either, the server could run for years nonstop and
get billions of updates and you don't want to play them back from the
beginning.  You want to take a checkpoint now and then, so you can
restart from there:

   d = {}
   while True:
      name, new_value = get_request()
      log_to_disk(name, new_value, timestamp())
      if checkpoint_now():   # do this once an hour or so
          log_to_disk(pickle(d), timestamp())
      old_value = d.get(name, None)
      d[name] = new_value
      send_response(old_value)

Now to restore, you find the newest pickle, read it in, and then apply
any logged updates with a newer timestamp, i.e. just the last hour's worth.

But this is no good either, because d can have millions of items, and
your server freezes while you're pickling and writing it.  You want a
separate thread doing that--except d is busily mutating while that
operation is in progress!  You can go crazy with locks, rollback
buffers, and all the insanity that SQL servers use, or with the sorted
immutable dictionary, you can simply write:

   d = frozendict()
   while True:
      name, new_value = get_request()
      log_to_disk(name, new_value, timestamp())
      if checkpoint_now():   # do this once an hour or so
          in_new_thread(log_to_disk, (pickle(d), timestamp()))
      old_value = d.get(name, None)        # look mom, no freeze-up
      d = d.updated(name, new_value)
      send_response(old_value)

By making d.updated() create a new immutable dict that's separate from
d, you now don't have to worry about locks or synchronization or any
of that crap.  When the pickler is done with the old d, its references
are gone and the GC reclaims its storage.  Of course you can do more
elaborate checkpointing on subsets of the data etc. with the same
methods.  

Really it's the presence of the O(log n) .updated() operation, rather
than sorting, that makes this type of structure interesting, but the
usual implementation involves balanced tree structures so the sorting
comes naturally.


From grante at visi.com  Thu Oct  4 13:44:44 2007
From: grante at visi.com (Grant Edwards)
Date: Thu, 04 Oct 2007 17:44:44 -0000
Subject: Python "implements <interface>" equivalent?
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
	<47051d47$0$8036$426a74cc@news.free.fr>
Message-ID: <13ga9kco185sud4@corp.supernews.com>

On 2007-10-04, Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:

> Yes, and it's even simpler : just pass your object. If it effectively 
> implements the desired interface, everything will work fine !-)
[...]

>> What I'd like to do is create a feature detection system for
>> my work -- specifically, a general class / interface called
>> "Feature" and then subclasses that implement functions like
>> isFeaturePresent() in all of their different and unique ways.
>> I'd love to hear how I can do this in Python.
>
> I'm not sure about what you exactly want to do, but FWIW, checking if an 
> object has a given attribute is quite simple:
>
> if has_attr(obj, 'attribute_name'):
>    print "Hurray"
> else:
>    print "D'oh"
>
> Note that in Python, methods are attributes too - only they
> are callable.

On a slight tangent....

The "Pythonic" way to handle things like that is often just
to call the method you want to call.  If the object doesn't
have that method, then you catch the exception and do whatever
it is you do in the case where the object doesn't have the
feature in question.  

The tricky bit is only catching the AttributeError exception
generated by the attempt to access the non-existant method, and
not catching AttributeError exceptions generated by bugs in the
method when it does exist.

Once you've added code to make sure you only catch exceptions
you care about, it's simpler to just call has_attr

the obvious method

   try:
       myobj.feature1()
   except AttributeError:
       print "object doesn't implement feature1"
    
isn't correct, since an unhandled AttributeError generated by
the feature1 method will print "object doesn't implement
feature1".  Attempting to isolate the attributeError we care
about looks like this:

   try:
       m = myobj.feature1
   except AttributeError:
       print "object doesn't implement feature1"
   else:
       m()

That's just too messy compared with the has_attr method that
goes like this:
       
   if has_attr(myobj,'feature1'):
       myobj.feature1()
   else:
       print "object doesn't implement feature1"   

However, I don't like that alot because you've got to supply
the method name twice: once as a string and once as the method
name.

What's the cleanest way to call a method that might not be
there?
    
-- 
Grant Edwards                   grante             Yow! My haircut is totally
                                  at               traditional!
                               visi.com            


From gagsl-py2 at yahoo.com.ar  Wed Oct  3 04:33:25 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 03 Oct 2007 05:33:25 -0300
Subject: I earn $36800 a month with google adsense
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
	<1191240372.428917.253350@o80g2000hse.googlegroups.com>
	<1191289294.449262.234020@r29g2000hsg.googlegroups.com>
	<1191330957.461057.313830@k79g2000hse.googlegroups.com>
	<1191340911.199902.314570@w3g2000hsg.googlegroups.com>
	<47028c82$0$16115$9b4e6d93@newsspool1.arcor-online.net>
Message-ID: <op.tzl1veznx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 02 Oct 2007 15:22:57 -0300, Wildemar Wildenburger  
<lasses_weil at klapptsowieso.net> escribi?:

> Dude, you, even as a spammer, can learn a lot from this group. As Diez
> pointed out, you will want to quote the site that you're spamvertising
> (Bastard!), so your pagerank rises.
> Pretty new to the biz, ain't ya?

You are charged of High Treason for voluntarily telling war secrets to the  
Enemy.
The above quoted text is enough evidence. The accused is found guilty and  
sentenced to lifelong exile from this group.
Sentence will be carried out next morning. No appeal is allowed.
Case closed.
Goodbye.

-- 
Gabriel Genellina



From bignose+hates-spam at benfinney.id.au  Tue Oct  2 05:49:46 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 02 Oct 2007 19:49:46 +1000
Subject: reliable unit test logging
References: <mailman.1331.1191237975.2658.python-list@python.org>
	<871wcfx83l.fsf@benfinney.id.au>
	<mailman.1384.1191310742.2658.python-list@python.org>
Message-ID: <87odfhsv5x.fsf@benfinney.id.au>

Vyacheslav Maslov <vmaslov at swsoft.com> writes:

> I understand your opinion

Hopefully you mean "explanation", not "opinion". I gave what appear to
me to be facts, not opinion, about the definition of a unit test.

> you are right, i use unit tests for some other kind of work.

More accurately: you use the Python 'unittest' framework for some
tests that are not unit tests.

> But anyway it works and produce good results for project.

Indeed, there's nothing wrong with using the module this way. The only
trouble in this case is confused terminology, that has led you to
believe the module is deficient, when actually it's doing the job it's
meant to do.

> Thanks i will look into this.

Glad to help.

-- 
 \     "Holy uncanny photographic mental processes, Batman!"  -- Robin |
  `\                                                                   |
_o__)                                                                  |
Ben Finney


From bignose+hates-spam at benfinney.id.au  Mon Oct 15 19:27:51 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 16 Oct 2007 09:27:51 +1000
Subject: EasyMock for python ?
References: <1192034695.321302.26580@o3g2000hsb.googlegroups.com>
	<87ve9d9icx.fsf@benfinney.id.au>
Message-ID: <874pgs6jrc.fsf@benfinney.id.au>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:

> I've had good results with Ian Bicking's 'minimock.py'
> <URL:http://blog.ianbicking.org/minimock.html>. It uses the existing
> 'doctest' functionality for its output [...]

That doesn't make much sense, and it's wrong; it uses 'print' for its
output. That should read "It uses the existing 'doctest' functionality
for checking output [...]"

-- 
 \             "If you're not part of the solution, you're part of the |
  `\                                   precipitate."  -- Steven Wright |
_o__)                                                                  |
Ben Finney


From researchbase at gmail.com  Tue Oct 16 09:51:42 2007
From: researchbase at gmail.com (krishnakant Mane)
Date: Tue, 16 Oct 2007 19:21:42 +0530
Subject: confused on calculating date difference in days.
In-Reply-To: <5njb0uFiilfrU4@mid.uni-berlin.de>
References: <mailman.49.1192518819.13605.python-list@python.org>
	<5nj8b8FiilfrU3@mid.uni-berlin.de> <87odez4gz5.fsf@benfinney.id.au>
	<5njb0uFiilfrU4@mid.uni-berlin.de>
Message-ID: <f81479dd0710160651x11f2d529qcf1ef64663128aaa@mail.gmail.com>

hello,
thanks all of you for providing valuable help.
right now I am confused about the delta object.
how can I extract the difference between two dates in terms of day
using the delta object?
I tried reading the python docs but did not understand the concept of
delta object and how can I measure the difference in terms of days
between two dates.
I expect that the days would be integers.
secondly the format of my date is actually "16/10/2007", and this is
all in varchar field inside a postgresql database.
I understand that datetime.datetime.strptime would convert this string
"16/10/2007" into a date object which I can then compare with the
current date created by datetime.now().
is that right?
if yes then please explain me how I can get the delta object to give
me results in days.
regards,
Krishnakant.


From gagsl-py2 at yahoo.com.ar  Mon Oct 29 21:34:32 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 22:34:32 -0300
Subject: [Possible SPAM] Re: Using msvcrt (in Windows),
	how to catch Enter key?
References: <mailman.571.1193653651.13605.python-list@python.org>
	<1193657385.878620.35180@d55g2000hsg.googlegroups.com>
	<mailman.575.1193660646.13605.python-list@python.org>
	<1193675164.790618.194190@57g2000hsv.googlegroups.com>
	<20071029165317.7009D1E4012@bag.python.org>
	<20071029174011.D22641E4029@bag.python.org>
	<op.t0zchnivx6zn5v@gabriel2.softlabbsas.com.ar>
	<20071030002246.B9ED91E401F@bag.python.org>
Message-ID: <op.t0zlbuo2x6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 29 Oct 2007 21:22:36 -0300, Dick Moores <rdm at rcblue.com> escribi?:

> At 03:23 PM 10/29/2007, Gabriel Genellina wrote:
>> En Mon, 29 Oct 2007 14:39:49 -0300, Dick Moores <rdm at rcblue.com>  
>> escribi?:
>>
>>
>> At least add a small sleep() call inside the loop, to be nice to other
>> running processes:
>>
>
> Yes, that makes a major difference in the CPU
> usage percentage on my computer. In fact I can't
> even tell that there is anything going on other
> than the usual behind-the-scenes XP stuff. CPU
> usage stays right around 0% or 6%, with an
> occasional 6% and a very occasional 15%.
> Interestingly, sleep(0.001) makes as big a
> difference as your sleep(0.1), but sleep(0.0001) bumps it up to a steady  
> 100%!

The underlying function in Windows is Sleep (or SleepEx) which takes an  
argument in milliseconds. 0.0001s = 0.1ms and it's rounded to 0. Sleep(0)  
has very specific semantics - for a single threaded program, it does  
nothing, so your code is effectively a busy loop taking 100% CPU.

-- 
Gabriel Genellina



From stef.mientki at gmail.com  Wed Oct 10 16:41:37 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Wed, 10 Oct 2007 22:41:37 +0200
Subject: howto add a sub-directory to the searchpath / namespace ?
Message-ID: <470D3901.9070504@gmail.com>

hello,

my program has become a bit large,
and now I want to split the files over several subdirectories.
So in the example shown below, I just moved the files f1.py and f2.py to 
a deeper subdirectory.

basedirectory\
    mainfile.py
    file1.py
    file2.py
    subdir1\
       __init__.py
       f1.py
       f2.py

Now I don't want (even can't) change my program,
to change imports from
    from f1 import something
into
    from subdir1.f1 import something
simply because f1.py and f2.py are python files dropped by users
and I do not know on forehand what will be dropped.

I looked into the description of __init__.py,
in the hope I could make f1.py and f2.py available as if they were in 
the basedirectory,
but i couldn't find a way.

Is there a way to make f1.py and f2.py available as if they were located 
in the base directory,
without knowing their names (so in general all py-files in the subdir1)  ??

thanks,
Stef Mientki




From lew at lewscanon.com  Sun Oct 21 11:02:11 2007
From: lew at lewscanon.com (Lew)
Date: Sun, 21 Oct 2007 11:02:11 -0400
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <471b64b2$0$90272$14726298@news.sunsite.dk>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<D4idne5kq88bxIbanZ2dnUVZ_qiinZ2d@comcast.com>
	<471b64b2$0$90272$14726298@news.sunsite.dk>
Message-ID: <TaednSYGYpJu9IbanZ2dnUVZ_tCrnZ2d@comcast.com>

Arne Vajh?j wrote:
> Lew wrote:
>>> very
>>> different. Having a dead - i mean end of development line software
>>> like TeX - and
>>
>> Based on what do you call it "dead end".  It's used, it's outlasted 
>> many other flashes in the pan, it does what its users require.  You 
>> will need evidence for such a claim.
> 
> According to wikipedia the last version is from december 2002.
> 
> That level of activity could be considered dead.
> 
> It would for almost any other software. Tex has some
> "absolute" over it, so I am not sure normal software
> practices apply.
> 
> But you could argue based on that.

No, you present good evidence that TeX is a dead end.  It still doesn't 
support the claim llothar wrote:
>> Depends. I would call Knuth as one of the worst programmers. 

Plenty of brilliant programmers have written software that is no longer used 
(except in legacy use cases).  Good software, too.  I suppose what I was 
reacting to was the notion that TeX was a dead end at the time Knuth came up 
with it, and that that somehow invalidated the accomplishment of coming up 
with TeX.

The fact that it is still in use even five years after cessation of 
development does mitigate the "dead end" assessment at least potentially.

-- 
Lew


From ameet.nanda at wipro.com  Tue Oct 16 04:52:33 2007
From: ameet.nanda at wipro.com (Ameet Nanda)
Date: Tue, 16 Oct 2007 14:22:33 +0530
Subject: Problem with proxies
Message-ID: <1192524753.7180.6.camel@ameet>


Hi All,

I access net using a proxy, which I have to authenticate everytime I try
to access net from my system. Now when I use urllib2.urlopen(url) , I
cant get ahead. I must provide proxy authentication , I tried reading
docs online which speak of something called as FancyUrlOpener. Now i
want to hardcode my username and password inside the script or somehow
save it.

How do I go ahead with that ??

-
Ameet



The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. 

WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email.
 
www.wipro.com


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 21:56:20 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 11 Oct 2007 01:56:20 -0000
Subject: Singleton
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<13gplgh75hot354@corp.supernews.com>
	<1192024635.416697.210620@o3g2000hsb.googlegroups.com>
	<13gprb0dd0b2u33@corp.supernews.com> <5n49uhFg32o6U1@mid.uni-berlin.de>
Message-ID: <13gr0m465vnuh67@corp.supernews.com>

On Wed, 10 Oct 2007 17:37:53 +0200, Diez B. Roggisch wrote:

>> Two borgs, or two million, the whole point of using borgs is that it
>> doesn't matter.
> 
> It does matter where the classes live (module-wise). Which is the
> problem the OP had, borg or not to borg.


Gotcha. Thanks for the demonstration code, that makes it clear.

[snip]


> You will see that there are _two_ different Borg-Cubes, as the output
> indicates. This has hit me more than once, and Carl Banks pointed that
> error out to the OP.
> 
> And if you'd follow your own advice of " take each word to have it's
> normal English meaning," then the OP is not
> 
> "struggling to get a singleton working"
> 
> but struggling to get "some sort of singleton working", as you cite
> yourself, and first tried to implement his needs using no
> singleton-recipe (or borg pattern) but a module:

Using modules *is* a recipe for getting singletons, as the OP clearly 
understood. 


> Which didn't work out for the same reason his singleton approach didn't
> work and your beloved Borg-pattern doesn't as well.

It's not my beloved Borg-pattern. My original post asked: "Why do you 
need only one instance?" and suggested that *perhaps* he should 
*consider* an alternative. Sheesh. It's not like I said that the Borg 
solves every problem every time.



-- 
Steven.


From murray.james.com.use at gmail.com  Wed Oct  3 20:15:49 2007
From: murray.james.com.use at gmail.com (murray.james.com.use at gmail.com)
Date: Thu, 04 Oct 2007 00:15:49 -0000
Subject: Computer Security Information (Free Articles and eBooks)
Message-ID: <1191456949.587942.326840@50g2000hsm.googlegroups.com>

I Want To Share Computer Security Information To All Internet Netter.

A. Computer Security Articles:
1.    Firewalls Torn Apart
2.    Guide To Social Engineering
3.    Social Engineering And Email Account Cracking
4.    Network Firewall Security
5.    Hijacking Hotmail Accounts For Newbies
6.    Various Ways To Hack Or Over Ride Foolproof
7.    Configuring ZoneAlarm Securely
8.    IP Masquerading Tutorial
9.    Interesting Things You Didnt Know About Your Computers Hardware
10.  Advanced Number Systems Made Easy
11.  Hacking Dictionary
12.  Hacking The Bios By Anand Bhaskar
13.  DNS The What The How And The Why
14.  Exploit Mihirs Guide To Inserting Logo To System Properties
15.  Getting Geographical Information Using An IP Address
16.  Create A Lightweight E Mailer
17.  Telnet Explained By Abhisek Datta
18.  Installing A Webserver For Newbies Part II
19.  The IP Adress
20.  Being A Hacker On The Meaning Of Being A Hacker
21.  Well Known Port Numbers
22.  Samba How To
23.  Removing Banners
24.  Port Numbers Part 1
25.  Port Numbers Part 2
26.  Port Numbers Part 3
27.  Port Numbers Part 4
28.  Port Numbers Part 5
29.  Port Numbers Part 6
30.  Port Numbers Part 7
31.  Port Numbers Part 8
32.  Port Numbers Part 9
33.  The OSI Model
34.  The Basic Elements Of Cracking
35.  Beginners Step By Step Security Guide
36.  Linking Rules For Hacking And Other Alternative Websites
37.  Installing A Webserver For Newbies
38.  Glossary
39.  Wireless Security And Hacking
40.  Wireless Network
41.  Demystifying Remote Host Part 1
42.  Exploiting Design Flaws In The Win32 API For Privilege Escalation
43.  Wireless LAN Technologies and Windows XP
44.  Understanding NetBIOS
45.  The Complete Guide To Computers
46.  Things You Need
47.  How To Clear The Past Mapped Network Drives List
48.  You Got This File From
49.  Msn Tutorial Ugw Securtiy Information Base
50.  The Basics Of Cryptography
51.  PGP Encryption For Beginners Learn How PGP Works
52.  Cryptography FAQ
53.  Cryptography Split Wide Open
54.  W2K File System
55.  A More Indepth Article About The Basics To Encryption
56.  Protecting Your Scripts
57.  Breaking Script Encoder
58.  Windows 2000 Encrypting File System And Disk Wipe Software
Vulnerability
59.  Buffer Overflow Basics
60.  Deadly Dos Attack
61.  MS Office XP The More Money I Give To Microsoft The More
Vulnerable My Windows Computers Are
62.  Dos Attacks Explained
63.  Introduction To Denial Of Service
64.  Miscellaneous Groups Publications
65.  Documents About General Hardening
66.  Documents About Unix Hardening
67.  Basic Steps To Hardening A Standalone Windows 2000 Installation
68.  Setting Up IIS And Securing Streamed Content
69.  Articles On How To Securing Hardening BSD
70.  Step By Step Guide To Secure Win2k
71.  Documents About Windows9x ME Hardening
72.  Documents About General Hardening
73.  Securing Your Web Pages With Apache
74.  Documents About Windows9x ME Hardening
75.  Documents About IIS Hardening Securing
76.  Basic Steps To Hardening A Standalone Windows 2000 Installation
77.  Excellent Analysis Of The ICQ Trojans
78.  The ICQ Security Tutorial

B. Computer Security eBooks:
1.    Attack Detection And Defense
2.    Banking On Phishing
3.    Commercial Video Call Software
4.    Cyber Adversary Characterization
5.    Dealing With The Data
6.    Deploying WSUS In The Enterprise
7.    Dictionary Of Information Security
8.    Enterprise Scanning
9.    Examining The ISA Server 2004 Feature Set
10.  File Services
11.  Filters
12.  Forensic Detection And Removal
13.  Format String Attacks
14.  Four Layers Of IPS Actions
15.  Hacking And The Passion For Knowledge
16.  Implementing Windows Cluster Services And Network Load Balancing
17.  Introducing Network Analysis
18.  Introduction To Hardware Hacking
19.  Managing Microsoft Exchange
20.  Managing Sessions
21.  Managing Snort Alerts
22.  Medium Business
23.  Microsoft Vista - Trusted Platform Module Services
24.  Monitoring And Detecting Deviations
25.  Monitoring And Intrusion Detection
26.  Navigating Corporate Politics
27.  Permissions - Shares And Group Policy
28.  Plugins And Preprocessors
29.  Product Of Fate - The Evolution Of A Hacker
30.  Programmer's Ultimate Security Deskref
31.  Prologue
32.  Quality From The Ground Up
33.  Reconnaissance - Social Engineering For Profit
34.  Regulatory Compliance
35.  RFID Attacks - Securing Communications Using RFID Middleware
36.  Scoping The Evaluation
37.  Server Cloning And Other Disaster Recovery Techniques
38.  Services
39.  Spam Filters - Detection And Evasion
40.  System Information Criticality
41.  Ten Password Pointers - Building Strong Passwords
42.  Ten Simple Security Searches That Work
43.  The Fight For The Primulus Network - Yaseen Vs Nathan
44.  The Physical Design
45.  The Suppliers
46.  Unseen Planning
47.  Virtual Networking
48.  Writing Exploits III

--- Thank You ---

Source:
http://www.security.fx-vista.com



From besturk at gmail.com  Thu Oct 18 11:17:39 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 08:17:39 -0700
Subject: Convert string to command..
In-Reply-To: <5npbjbFio7g9U1@mid.uni-berlin.de>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
Message-ID: <1192720659.272611.320900@v29g2000prd.googlegroups.com>

On Oct 18, 6:14 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Abandoned wrote:
> > Thanks you all answer..
> > But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
> > (100.000 elements)
> > Is there any easy alternative ?
>
> How big? How slow? For me, a 10000-element list takes  0.04 seconds to be
> parsed. Which I find fast.
>
> Diez

173.000 dict elements and it tooks 2.2 seconds this very big time for
my project



From lasses_weil at klapptsowieso.net  Wed Oct 24 18:38:31 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 25 Oct 2007 00:38:31 +0200
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <ffj1f3$fpp$2@online.de>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
	<ffj1f3$fpp$2@online.de>
Message-ID: <471fc967$0$13110$9b4e6d93@newsspool2.arcor-online.net>

Joachim Durchholz wrote:
> And yes, it sucks in major ways.
> 
Oh my God, I don't want to, but I just have to ask: Why?

/W


From Jean-Bernard.jacquet-at-tele-deux-point-fr at invalid.org  Thu Oct  4 04:30:16 2007
From: Jean-Bernard.jacquet-at-tele-deux-point-fr at invalid.org (JBJ)
Date: Thu, 04 Oct 2007 10:30:16 +0200
Subject: Convert on uppercase unaccentent unicode character
References: <4703dfff$0$30966$426a74cc@news.free.fr>
	<1191441951.529380.55860@g4g2000hsf.googlegroups.com>
Message-ID: <4704a3ac$0$2769$426a74cc@news.free.fr>

John Machin wrote:

> On Oct 4, 4:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
> point... at invalid.org> wrote:
>> Hi,
>> I'am very newbie in Python.
>> For the moment I'am trying to convert an unicode character to his
>> uppercase unaccented character.
>> By example with locale fr_FR:
>> a,A,?,? should return A
>> o,O,?,? should return O
>> ?,? should return ?
>> i,I,?,? should return I
>>
>> Have you some suggestions ?
>>
>> Thank.
> 
> Google in this newsgroup for a thread started by "bussiere" on or
> about 2006-03-25. The code snippet provided by Fredrik Lundh should
> help you.
Thanks


From s.mientki at id.umcn.nl  Fri Oct 19 10:19:32 2007
From: s.mientki at id.umcn.nl (stef)
Date: Fri, 19 Oct 2007 16:19:32 +0200
Subject: how to iterate over sequence and non-sequence ?
In-Reply-To: <1192779222.618164.321910@y27g2000pre.googlegroups.com>
References: <mailman.201.1192778546.13605.python-list@python.org>
	<1192779222.618164.321910@y27g2000pre.googlegroups.com>
Message-ID: <2e539$4718bcf4$83aef404$17711@news1.tudelft.nl>

Paul Hankin wrote:
> On Oct 19, 12:24 am, stef mientki <stef.mien... at gmail.com> wrote:
>   
>> I generate dynamically a sequence of values,
>> but this "sequence" could also have length 1 or even length 0.
>>
>> So I get some line in the form of:
>>       line = '(2,3,4)'
>>       line = ''
>>       line = '(2)'
>> (in fact these are not constant numbers, but all kind of integer
>> variables, coming from all over the program, selected from a tree, that
>> shows all "reachable" variables)
>>
>> So in fact I get the value from an exec statement, like this
>>       exec 'signals = ' + line
>>
>> Now I want to iterate over "signals", which works perfect if there are 2
>> or more signals,
>> but it fails when I have none or just 1 signal.
>>     for value in signals :
>>         do something
>>
>> As this meant for real-time signals, I want it fast, so (I think) I
>> can't afford extensive testing.
>>
>> Any smart solution there ?
>>     
>
> First: don't collect data into strings - python has many container
> types which you can use.
>   
Well I'm not collecting data, I'm collecting pointers to data.
This program simulates a user written program in JAL.
As Python doesn't support pointers, instead I collect names.
The names are derived from an analysis of the user program under test,
so the danger some of you are referring to, is not there,
or at least is not that simple.
Besides it's a local application where the goal is to let a user test 
his program (and hardware),
so if the user want to hack, he can better type directly "format c:\".

> Next, your strings look like they're supposed to contain tuples. In
> fact, tuples are a bit awkward sometimes because you have to use
> '(a,') for a tuple with one element - (2) isn't a tuple of length one,
> it's the same as 2. Either cope with this special case, or use lists.
> Either way, you'll have to use () or [] for an empty sequence.
>   
Of course, thanks Paul,
if I change tuple to list, everything works ok, even with empty lists.

cheers,
Stef Mientki
> --
> Paul Hankin
>
>   


From shriphanip at gmail.com  Wed Oct 10 06:47:40 2007
From: shriphanip at gmail.com (Shriphani)
Date: Wed, 10 Oct 2007 10:47:40 -0000
Subject: Last value of yield statement
In-Reply-To: <1192012441.818783.149110@k79g2000hse.googlegroups.com>
References: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
	<1192012441.818783.149110@k79g2000hse.googlegroups.com>
Message-ID: <1192013260.148059.110910@y42g2000hsy.googlegroups.com>

On Oct 10, 3:34 pm, Dustan <DustanGro... at gmail.com> wrote:
> On Oct 10, 5:19 am, Shriphani <shripha... at gmail.com> wrote:
>
> > Hello all,
>
> > Let us say I have a function like this:
>
> > def efficientFiller(file):
>
> Note that you are shadowing the built-in variable 'file' here. Better
> use 'filename', or something to that effect.
>
>
>
> >         worthless_list = []
> >         pot_file = open(file,'r')
> >         pot_file_text = pot_file.readlines()
> >         for line in pot_file_text:
> >                 if line.find("msgid") != -1:
> >                         message_id = shlex.split(line)[1]
> >                         if message_id in dictionary:
> >                                 number = pot_file_text.index(line)
> >                                 corresponding_crap =
> > dictionary.get(message_id)
> >                                 final_string = 'msgstr' + " " + '"' +
> > corresponding_crap + '"' + '\n'
> >                                 pot_file_text[number+1] = final_string
> >                                 yield pot_file_text
>
> > efficient_filler =  efficientFiller("libexo-0.3.pot")
> > new_list = list(efficient_filler)
> > print new_list
>
> > I want to plainly get the last value the yield statement generates.
> > How can I go about doing this please?
>
> > Regards,
> > Shriphani Palakodety
>
> efficient_filler =  efficientFiller("libexo-0.3.pot")
> new_list = list(efficient_filler)
> last_value = new_list[-1]
> print last_value
>
> # OR
>
> efficient_filler =  efficientFiller("libexo-0.3.pot")
> for last_value in efficient_filler: pass
> print last_value
>
> The latter assumes that the last value is the only value you want.

Hello again,

Well the basic trouble is that the yield statement you see there
causes it to print the list over and over again when a string
containing "msgid" is found and the subsequent conditions are
satisfied. I just want the last list the yield statement generates. I
don't want the last element of the list generated. just the last
statement.
Regards,
Shriphani Palakodety



From oruccim at gmail.com  Mon Oct  1 14:21:09 2007
From: oruccim at gmail.com (oruccim at gmail.com)
Date: Mon, 01 Oct 2007 11:21:09 -0700
Subject: image python
Message-ID: <1191262869.523524.180400@y42g2000hsy.googlegroups.com>

hi
I want understanding pictures colorfull
for examle colorfull or black-white
image.google.com there are understand it .Can I understand it
thanks....



From bobmon at gmail.com  Fri Oct 19 16:47:26 2007
From: bobmon at gmail.com (bobmon)
Date: Fri, 19 Oct 2007 20:47:26 -0000
Subject: Using Python with SciTE editor
Message-ID: <1192826846.131869.83690@t8g2000prg.googlegroups.com>

Hello,

I have a problem running Python programs from within SciTE, under
Linux --- the input( ) function fails with

    "IOError: [Errno 9] Bad file descriptor"

The same program will run happily in SciTE, under Windows --- gets the
input, goes off and calculates wondrous things --- but somehow, in
Linux, I'm not set up right.

This is true using Fedora Core, and Kunbuntu (KDE in both cases, if
that matters).

I'm guessing that I need to fix one of my ".properties" configuration
files, but I have no idea what to fix.

Please help -  please, please, pleasepleasePleasePLEASEPLEASE

-bob,mon!

p.s. I know I've seen this delat with somewhere, but I can't find it.
Any help will be GREATLY appreciated!  TIA.



From jcd at sdf.lonestar.org  Fri Oct 26 10:14:17 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Fri, 26 Oct 2007 10:14:17 -0400
Subject: tuples within tuples
In-Reply-To: <1193407191.002389.17680@v3g2000hsg.googlegroups.com>
References: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>
	<s5udnSl4tKp9Q7zanZ2dnUVZ_oytnZ2d@comcast.com>
	<1193403264.666264.113710@o38g2000hse.googlegroups.com>
	<5oe73cFmh2htU1@mid.uni-berlin.de>
	<1193407191.002389.17680@v3g2000hsg.googlegroups.com>
Message-ID: <20071026141417.GA10980@sdf.lonestar.org>

On Fri, Oct 26, 2007 at 06:59:51AM -0700, korovev76 at gmail.com wrote regarding Re: tuples within tuples:
> 
> > Resolve *what*?  The problem isn't clear yet; at least to me.  Above you
> > say what you get.  What exactly do you want?  Examples please.
> >
> 
> 
> Sorry for my poor english, but I meant: how can I obtain a list of A
> and C starting from something like this?
> 
> (A,B,C,D)
> that could be
> ('tagA', None, [('tagB', None, ['bobloblaw], None)], None)
> but also
> ('tagA', None, description, None)
> when I don't know if C is a tuple or not?
> 
> I guess that, at least,  within the cicle I may test if C is a tuple
> or not.. And then apply the same cicle for C... and so on
> 
> Am i right?
> 
> 
> ciao
> korovev

So, to clarify the piece that you still haven't explicitly said, you want to keep the tag name and children of every element in your XML document.  (which is different from keeping (A, C) from tuple (A, B, C, D), because you want to modify C as well, and it's decendants.)

As a first solution, how about: 

def reduceXML(node):
    if type(node) == str:
		return node
	else: 
		return (node[0], reduceXML(node[2])

N.B. Beware of stack limitations.



From bj_666 at gmx.net  Wed Oct 31 13:27:57 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 31 Oct 2007 17:27:57 GMT
Subject: Method needed for skipping lines
References: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
Message-ID: <5ors8sFo3gssU4@mid.uni-berlin.de>

On Wed, 31 Oct 2007 18:02:26 +0100, Gustaf wrote:

> Just for fun, I'm working on a script to count the number of lines in
> source files. Some lines are auto-generated (by the IDE) and shouldn't be
> counted. The auto-generated part of files start with "Begin VB.Form" and
> end with "End" (first thing on the line). The "End" keyword may appear
> inside the auto-generated part, but not at the beginning of the line.
> 
> I imagine having a flag variable to tell whether you're inside the
> auto-generated part, but I wasn't able to figure out exactly how. Here's
> the function, without the ability to skip auto-generated code:
> 
> # Count the lines of source code in the file def count_lines(f):
>   file = open(f, 'r')
>   rows = 0
>   for line in file:
>     rows = rows + 1
>   return rows
> 
> How would you modify this to exclude lines between "Begin VB.Form" and
> "End" as described above? 

Introduce the flag and look up the docs for the `startswith()` method on
strings.

Ciao,
	Marc 'BlackJack' Rintsch


From python.list at tim.thechases.com  Wed Oct 31 11:55:50 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 31 Oct 2007 10:55:50 -0500
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <37fac3b90710310831xbabb2ddl7d12b87675edc6d9@mail.gmail.com>
References: <loom.20071031T132748-928@post.gmane.org>	
	<47289BA8.5000109@tim.thechases.com>
	<37fac3b90710310831xbabb2ddl7d12b87675edc6d9@mail.gmail.com>
Message-ID: <4728A586.3050300@tim.thechases.com>

> Well, I this is another idiom in itself, right?
> Your checking if something is part of an iterable.
> I'm checking truth before entering a conditional expression.

I'm not sure I follow.  I simply replaced your

   if check.find('something')

with

   if 'something' in check:

which (1) is more readable (2) is more pythonic (especially as I 
understand that find() is going away), and (3) works like I 
understand you want from your description.

For strings, they're the same behavior.  However, it also works 
for testing membership in other container classes (sets, lists, 
tuples, dicts, etc).

Your original code's behavior would be analog to

   if not check.startswith('something')

which is not at all what I think you meant.  This 
misinterpretation alone is reason enough to give the find() 
method the boot.

> The latter is considered to be pythonic, right?

Clarity is pythonic.  The find() call returns an offset, or -1 if 
not found (because the beginning-of-string is offset=0).  It 
would also make sense if this returned None instead of -1. 
Either way, find() should be used for returning index values.  If 
you're testing for the presence of a substring, use the

   if 'something' in check:

to do the test.  And as for the start/end parameters to find, 
they are interpreted as slice endpoints, so

   if check.find('something', start) != -1:

would be the same as

   if 'something' in check[start:]:

and

   if check.find('something', start, end) != -1:

would be the same as

   if 'something' in check[start:end]:

both of which are far more readable than their find() variants.

Hope this helps clarify,

-tkc






From byte8bits at gmail.com  Thu Oct 11 13:02:54 2007
From: byte8bits at gmail.com (byte8bits at gmail.com)
Date: Thu, 11 Oct 2007 17:02:54 -0000
Subject: Finding Peoples' Names in Files
In-Reply-To: <1192121372.931784.171120@d55g2000hsg.googlegroups.com>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>
	<felhv8$18g$1@solaris.cc.vt.edu>
	<1192121372.931784.171120@d55g2000hsg.googlegroups.com>
Message-ID: <1192122174.084193.298950@v3g2000hsg.googlegroups.com>

On Oct 11, 12:49 pm, Matimus <mccre... at gmail.com> wrote:
> On Oct 11, 9:11 am, brad <byte8b... at gmail.com> wrote:
>
>
>
> > cokofree... at gmail.com wrote:
> > > However...how can you know it is a name...
>
> > OK, I admitted in my first post that it was a crazy question, but if one
> > could find an answer, one would be onto something. Maybe it's not a 100%
> > answerable question, but I would guess that it is an 80% answerable
> > question... I just don't know how... yet :)
>
> > Besides admitting that it's a crazy question, I should stop and explain
> > how it would be useful to me at least. Is a credit card number itself
> > valuable? I would think not. One can easily re and luhn check for credit
> > card numbers located in files with a great degree of accuracy, but a
> > number without a name is not very useful to me. So, if one could
> > associate names to luhn checked numbers automatically, then one would be
> > onto something. Or at least say, "hey, this file has luhn validated CCs
> > *AND* it seems to have people's names in it as well." Now then, I'd have
> > less to review or perhaps as much as I have now, but I could push the
> > files with numbers and names to the top of the list so that they would
> > be reviewed first.
>
> > Brad
>
> What the hell are you doing? Your post sounds to me like you have a
> huge amount of stolen, or at the very least misapprehended, data. Now
> you want to search it for credit card numbers and names so that you
> can use them.
>
> I am not cool with this! This is a public forum about a programming
> language. What makes you think that anybody in this forum will be cool
> with that. Perhaps you aren't doing anything illegal, but it sure is
> coming off that way. If you are doing something illegal I hope you get
> caught.
>
> At the very least, you might want to clarify why you are looking for
> such capability so that you don't get effectively black-listed (well,
> by me at least).
>
> Matt

Go have a beer and calm down a bit :) It's a legitimate purpose,
although it could (and probably is being used by bad guys right now).
My intent, as you can see from the links below, is to catch it before
the bad guys do.

http://filebox.vt.edu/users/rtilley/public/find_ccns/
http://filebox.vt.edu/users/rtilley/public/find_ssns/

Brad





From yinghe.chen at jeppesen.com.rm  Tue Oct 23 04:28:37 2007
From: yinghe.chen at jeppesen.com.rm (Yinghe Chen)
Date: Tue, 23 Oct 2007 16:28:37 +0800
Subject: How to implement function like this?
Message-ID: <ffkba5$1u6$1@wake.carmen.se>

Hello gurus,

I have a question, a function like below, it is implemented by me, :)

def funcA(tarray):
       a = [2,3,4]
        if len(tarray) >=3:
             return a[0],a[1], a[2]
        elif len(tarray) == 2:
            return a[0],a[1], funcB(1)[0]
        elif len(tarray) == 1:
           return a[0], funcB(2)[0], funcB(2)[1]
        else:
            return funcB(3)[0], funcB(3)[1], funcB(3)[2]


The return of funcA is always 3 values, but depending on the length of 
tarray, I need to return different values accordingly.  if tarray lenght is 
2, I need to get another one value from funcB, if tarray length is 0, I need 
to get all three values from funcB.


Is there a brief way to achieve it?

Thanks, 




From debajit1 at gmail.com  Thu Oct 18 14:45:01 2007
From: debajit1 at gmail.com (Debajit Adhikary)
Date: Thu, 18 Oct 2007 18:45:01 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1i6625q.c3i82c1s3d3daN%aleax@mac.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1i6625q.c3i82c1s3d3daN%aleax@mac.com>
Message-ID: <1192733101.385134.3670@y27g2000pre.googlegroups.com>

On Oct 18, 9:47 am, al... at mac.com (Alex Martelli) wrote:
> Debajit Adhikary <debaj... at gmail.com> wrote:
>
> > How does "a.extend(b)" compare with "a += b" when it comes to
> > performance? Does a + b create a completely new list that it assigns
> > back to a? If so, a.extend(b) would seem to be faster. How could I
> > verify things like these?
>
> That's what the timeit module is for, but make sure that the snippet
> you're timing has no side effects (since it's repeatedly executed).
> E.g.:
>
> brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]'
> 'a=z[:];a.extend(b)'
> 1000000 loops, best of 3: 0.769 usec per loop
> brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]' 'a=z[:];a+=b'
> 1000000 loops, best of 3: 0.664 usec per loop
> brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]'
> 'a=z[:];a.extend(b)'
> 1000000 loops, best of 3: 0.769 usec per loop
> brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]' 'a=z[:];a+=b'
> 1000000 loops, best of 3: 0.665 usec per loop
> brain:~ alex$
>
> The repetition of the measurements show them very steady, so now you
> know that += is about 100 nanoseconds faster (on my laptop) than extend
> (the reason is: it saves the tiny cost of looking up 'extend' on a; to
> verify this, use much longer lists and you'll notice that while overall
> times for both approaches increase, the difference between the two
> approaches remains about the same for lists of any length).

> You can find more details on commandline use of timeit at
> <http://docs.python.org/lib/node808.html> (see adjacent nodes in Python
> docs for examples and details on the more advanced use of timeit inside
> your own code) but I hope these indications may be of help anyway.

Thanks for the wonderful explanation on timeit.
Thats one more tool now in my arsenal :P



From stargaming at gmail.com  Tue Oct  2 12:51:34 2007
From: stargaming at gmail.com (Stargaming)
Date: 02 Oct 2007 16:51:34 GMT
Subject: Adding behaviour for managing "task" dependencies
References: <1191335315.161387.238470@w3g2000hsg.googlegroups.com>
Message-ID: <47027715$0$11447$9b622d9e@news.freenet.de>

On Tue, 02 Oct 2007 14:28:35 +0000, m.pricejones wrote:

> Hi,
> 
> I'm currently writing an animation pipeline in Python which is a system
> for controlling the flow of work and assets for a team of people working
> on a computer animated film. The system will be fairly large with a
> database backend.
> 
> One particular problem that I'd like to address is the need for managing
> dependent tasks. Often you need to process one particular set of
> information before starting on another so when you batch them all
> together and send them off to a set of computers to process you need
> some way of formulating the dependencies. This preferably ends up
> looking a lot like a Makefile in the end with syntax a bit like:
> 
> task task_name (dependencies):
>     commands to complete the task
>     ...
> 
> Where the dependencies are a list of other tasks that need to be
> completed first.
> 
> However I'd really like to do it in Python, but I'm thinking I'd might
> need to extend Python a bit in order to achieve the new syntax. I've
> seen attempts to do this within the Python syntax (Scons and buildIt)
> and I'm not a big fan of the way it ends up looking. I've worked at a
> place that has written it's own language to handle that sort of thing
> but then you end up with a language that is good for that but rubbish at
> everything else. 

Doesn't seem too bad if you just want to write down dependencies. Better 
have one tool/language doing it's job perfectly than having a big monster 
tool doing lots of jobs pretty bad.

This is also sometimes called domain-specific languages or `language 
oriented programming <http://www.onboard.jetbrains.com/is1/articles/04/10/
lop/>`_.

> Python seems like a good basis if I could tweak it slightly.
> 
> One particular point that interests me is the idea of maintaining
> compatibility with Python modules so you still have all the
> functionality. 

If you disagreed with my statements above, that's a good point. Would 
make deserialization of those nearly-Makefiles easier, too.

> This makes me think of the "from __future__ import ..."
> statements which, if I understand them correctly, can introduce new
> syntax like the with_statement, whilst still maintaining compatibility
> with older modules?

I might be wrong here but AFAIK those `__future__` imports just set some 
'compiler' flags. The documentation isn't saying much about the treatment 
of those statements but I guess they're handled internally (since 
__future__.py doesn't seem to do anything at all). See the `module 
documentation <http://docs.python.org/lib/module-future.html>`_ for 
details.
 
> Is this correct? Can anyone write a syntax changing module or is
> __future__ a hard coded special case? I realise I'll have to get into
> the C side of things for this. Are there other approaches to this that I
> really should be considering instead?

Syntax (as in: grammar) is compiled into the python binary. You can 
change the python source (as it's free) and recompile but, FWIW, I would 
not suggest this. You're _forking_ CPython then and well, this would be 
an additional project to maintain (merging all updates, fixes, releases 
into your fork etc.).

`PyPy <http://codespeak.net/pypy/>`_ could be slightly easier to adjust 
but still: extra project.

Another approach could be `Logix <http://livelogix.net/logix/>`_. It's an 
"alternate front-end for Python" with the ability to change its syntax on-
the-fly. I don't know how actively maintained it is, though.

> Any thoughts would be most appreciated, though I would like to stress
> that I don't think Python should support the syntax I'm proposing I'd
> just like to know if I can extend a copy of it to do that.

As stated above, there are several ways to change Python to support the 
syntax you want but hey, why do you need this? As far as I understood 
you, you want to use *normal* python functions and add dependencies to 
them. First thing popping into my mind is a simple function eg. ``depends
(source, target)`` or ``depends(target)(source)``. The second example 
would have the advantage of adapting neatly into the decorator syntax::

    def early_task():
        foo()
    
    @depends(early_task)
    def late_task():
        bar()

The wrapping `depends` function could decide whether `early_task` is done 
already or not (and invoke it, if neccessary) and finally pass through 
the call to `late_task`.

This is just an example how you could use existing syntax to modelize 
dependencies, there are other ways I guess.

HTH,
Stargaming


From steve at holdenweb.com  Thu Oct  4 00:09:25 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 00:09:25 -0400
Subject: module confusion
In-Reply-To: <87hcl7r1ga.fsf@benfinney.id.au>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>	<mailman.1489.1191464586.2658.python-list@python.org>
	<87hcl7r1ga.fsf@benfinney.id.au>
Message-ID: <fe1p1i$2a6$1@sea.gmane.org>

Ben Finney wrote:
> Steve Holden <steve at holdenweb.com> writes:
> 
>> You and I know that the semantics of Python names are precisely
>> those of (to use an Algol 68 term, unless I am mistaken)
>> automatically dereferenced pointers to objects of arbitrary type.
> 
> Yes. That's exactly why it's wrong to refer to them as pointers. They
> don't behave like the pointers in other languages, which are *not*
> "automatically-dereferenced", nor "to objects of arbitrary type".
> 
> It's misleading to talk about a Python name as a "pointer" without
> those qualifiers, because they're *not* implicit in programmers'
> understanding of that term.
> 
> If you want to continually refer to them as
> "automatically-dereferenced pointers to objects of arbitrary type", by
> all means go ahead. That at least *does* fit the semantics. But the
> simple term "pointer" does *not* describe them in the absence of those
> necessary and non-default qualifiers, and is misleading.
> 
In practice I am quite happy talking about "variables" as long as nobody 
is picking nits, but I am afraid that in this thread the nits are not 
only being picked, they are being boiled alive and eaten.

Consequently I feel obliged to reply in my own defense that if you 
weren't intelligent enough to recognize that description as essentially 
correct this conversation need have gone no further. I don't encourage 
people to talk in terms of pointers most of the time, but I find that 
such pedagogic devices are useful in discussing the essential 
differences between mutable and immutable values.

Neither do I normally attempt to mislead (as an examination of my record 
on this group should confirm), which is precisely why the qualifiers 
*were* attached. So kindly do not tell me it's "wrong" to refer them as 
pointers. Such phraseology can tend to be emotionally charged (for 
instance when proponents have religious feelings about their beliefs).

Fortunately programming languages and operating systems have never been 
religious issues for me. It's more like "This problem has a cross head, 
so I'll need a Philips screwdriver". I don't worship my spirit level, so 
I'm damned if I will worship LISP or Python. They can both be *jolly* 
useful, though

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From mccredie at gmail.com  Wed Oct 17 14:40:29 2007
From: mccredie at gmail.com (Matimus)
Date: Wed, 17 Oct 2007 18:40:29 -0000
Subject: Can you determine the sign of the polar form of a complex number?
In-Reply-To: <1192629071.834342.243370@i38g2000prf.googlegroups.com>
References: <1192627052.254388.217400@e9g2000prf.googlegroups.com>
	<1192629071.834342.243370@i38g2000prf.googlegroups.com>
Message-ID: <1192646429.938796.184150@i13g2000prf.googlegroups.com>

On Oct 17, 6:51 am, schaefer... at gmail.com wrote:
> Just to clarify what I'm after:
>
> If you plot (-3)^n where n is a set of negative real numbers between 0
> and -20 for example, then you get a discontinuos line due to the
> problem mentioned above with fractional exponents. However, you can
> compute what the correct absolute value of the the missing points
> should be (see z2 above for an example), but I would like to know how
> to determine what the correct sign of z2 should be so that it fits the
> graph.

I know this isn't specifically what you are asking, but since you
aren't asking a Python question and this is a Python group I figure
I'm justified in giving you a slightly unrelated Python answer.

If you want to raise a negative number to a fractional exponent in
Python you simply have to make sure that you use complex numbers to
begin with:

>>> (-3+0j)**4.5
(7.7313381458154376e-014+140.29611541307906j)

Then if you want the absolute value of that, you can simply use the
abs function:

>>> x = (-3+0j)**4.5
>>> abs(x)
140.29611541307906

The absolute value will always be positive. If you want the angle you
can use atan.

>>> x = (-3+0j)**4.5
>>> math.atan(x.imag/x.real)
1.5707963267948961

I would maybe do this:

>>> def ang(x):
...  return math.atan(x.imag/x.real)

So, now that you have the angle and the magnitude, you can do this:

>>> abs(x) * cmath.exp(1j * ang(x))
(7.0894366756400186e-014+140.29611541307906j)

Which matches our original answer. Well, there is a little rounding
error because we are using floats.

So, if you have a negative magnitude, that should be exactly the same
as adding pi (180 degrees) to the angle.

>>> (-abs(x)) * cmath.exp(1j * (ang(x)+cmath.pi))
(2.5771127152718125e-014+140.29611541307906j)

Which should match our original answer. It is a little different, but
notice the magnitude of the real and imaginary parts. The real part
looks different, but is so small compared to the imaginary part that
it can almost be ignored.

Matt



From carsten at uniqsys.com  Mon Oct  1 10:22:14 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 10:22:14 -0400
Subject: Select as dictionary...
In-Reply-To: <4700fb42$0$18288$426a74cc@news.free.fr>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<4700fb42$0$18288$426a74cc@news.free.fr>
Message-ID: <1191248534.3393.12.camel@dot.uniqsys.com>

On Mon, 2007-10-01 at 15:50 +0200, Bruno Desthuilliers wrote:
> Besturk.Net Admin a ?crit :
> > I want to see this result directly as a dictionary:
> > 
> > {1: 5, 2: 5 .....}
> > 
> > How do i select in this format ?
> 
> IIRC, postgres' db-api connector (well, at least one of them - I don't 
> know which one you're using) has a DictCursor.

That would return the results as a list of dictionaries like this:

[{'id':1, 'w':5}, {'id':2, 'w':5}, ...]

-- 
Carsten Haese
http://informixdb.sourceforge.net




From kernel1983 at gmail.com  Wed Oct 24 22:14:05 2007
From: kernel1983 at gmail.com (kernel1983)
Date: Thu, 25 Oct 2007 02:14:05 -0000
Subject: About Pywin32's invoke
Message-ID: <1193278445.657569.149940@y27g2000pre.googlegroups.com>

By reading the doc of pywin32

we can invoke COM like:

    o = win32com.client.Dispatch("Excel.Application")


but is it possible to invoke some GUID directly?



If COM was going to be invoked by python, must it support IDispatch?



From bj_666 at gmx.net  Sat Oct 27 13:27:51 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 27 Oct 2007 17:27:51 GMT
Subject: xmpfilter-a-like for python (code annotation)
References: <1193505013.821461.149470@d55g2000hsg.googlegroups.com>
Message-ID: <5ohaonFmgu6mU3@mid.uni-berlin.de>

On Sat, 27 Oct 2007 17:10:13 +0000, thattommyhallll at gmail.com wrote:

> http://eigenclass.org/hiki/xmpfilter
> looks cool , anything like this for python? any reason that we culd
> not do simmilar ?

I just read that page and am a little confused.  This program adds
assertions based on the actual code, i.e. if the code is wrong it
nonetheless adds assertions that don't fail.  I always thought one writes
assertions to test what the code should do and not what it actually does!?

Ciao,
	Marc 'BlackJack' Rintsch


From michaelvmata at gmail.com  Thu Oct 18 20:21:40 2007
From: michaelvmata at gmail.com (michaelvmata at gmail.com)
Date: Fri, 19 Oct 2007 00:21:40 -0000
Subject: Is there a way to tell if a script has been run by Pythonw.exe
	instead of Python.exe?
In-Reply-To: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
References: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
Message-ID: <1192753300.098891.75300@k35g2000prh.googlegroups.com>

On Oct 18, 2:56 pm, Metalone <j... at iteris.com> wrote:
> In particular I want to know how to tell if reading and writing to the
> console can occur.
> Something like
> sys.isConsolePresent()

Look at sys.executable to find the name of the binary for the Python
interpreter.



From paul.hankin at gmail.com  Tue Oct  2 07:35:41 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Tue, 02 Oct 2007 11:35:41 -0000
Subject: readline() - problem
In-Reply-To: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
References: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
Message-ID: <1191324941.440139.101870@w3g2000hsg.googlegroups.com>

On Oct 2, 12:25 pm, pi... at kolodziejczyk.waw.pl wrote:
> Hi!
> I'm a new user of python, and have problem.
> I have a plain ascii file:
> 1aaaaaaaaaaaa1......1
> 1cccccccccccc2......1
> 1xxxxxxxxxxxx1......1
> I want to create a new file which contains only lines with '1' on 15th
> position.
> I've tried this:
>
> import string
> f=open('/test/test.asc','r')
> o=open('/test/out.asc','w')
> for line in f:
>     s= f.readline()
>     if s[15]=='1' :
>        o.write(s)
> o.close()
> f.close()
>
> Why it doesn't work ('s' contains ' ' )?

You're iterating over the lines in f already, so no need to call
readline.

for line in f:
  if line[15] == '1':
    o.write(line)

--
Paul Hankin



From martin at v.loewis.de  Wed Oct  3 08:17:14 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 03 Oct 2007 14:17:14 +0200
Subject: Python and SSL
In-Reply-To: <1191396724.394393.322320@57g2000hsv.googlegroups.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
Message-ID: <4703884A.10905@v.loewis.de>

> It looks like this
> 
> MyPythonProgram --->Proxy---->Server
> The  proxy is written in Java. I want to use that proxy to see what my
> Python program sends to server.
> The proxy uses its own certificate and this certificate must be
> trusted, I think, otherwise I receive an error.

What error do you receive precisely? Please copy it literally from
the terminal, don't rephrase it.

Regards,
Martin


From deets at nospam.web.de  Thu Oct 18 11:57:14 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 18 Oct 2007 17:57:14 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
Message-ID: <5npe2qFjhdjpU1@mid.uni-berlin.de>

Abandoned wrote:

> On Oct 18, 6:35 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> Abandoned wrote:
>> > On Oct 18, 6:14 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>> >> Abandoned wrote:
>> >> > Thanks you all answer..
>> >> > But "eval" is very slow at very big dictionary {2:3,4:5,6:19....}
>> >> > (100.000 elements)
>> >> > Is there any easy alternative ?
>>
>> >> How big? How slow? For me, a 10000-element list takes  0.04 seconds to
>> >> be parsed. Which I find fast.
>>
>> >> Diez
>>
>> > 173.000 dict elements and it tooks 2.2 seconds this very big time for
>> > my project
>>
>> Where does the data come from?
>>
>> Diez
> 
> Data come from database..
> I want to cache to speed up my system and i save the dictionary to
> database for speed up but eval is very slow for do this.
> Not: 2.2 second only eval operation.

Does the dictionary change often?

And you should store a pickle to the database then. Besides, making a
database-query of that size (after all, we're talking a few megs here) will
take a while as well - so are you SURE the 2.2 seconds are a problem? Or is
it just that you think they are?

Diez


From jcd at sdf.lonestar.org  Fri Oct 26 19:17:18 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Fri, 26 Oct 2007 19:17:18 -0400
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <1193438763.190428.134710@q5g2000prf.googlegroups.com>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
Message-ID: <4722757E.30505@sdf.lonestar.org>

Matimus wrote:
>> - Traling characters at the end of a literal are already used (the L
>>   for long).
>>     
>
> The trailing L is going away in Python 3.0. For your consideration may
> I suggest a '$' prefix. Though, I'm not sure I even support the idea
> of a decimal literal, and I'm not even sure if I support the idea of
> using a prefix '$' to identify that literal, it seems somewhat
> fitting.
>
> So...
> Decimal("12.34") -> $12.34
>
> Pros:
>  - Easier to see than appended character (I think)
>  - Notation is fitting when dealing with monetary values
>  - Easy to remember
> Cons:
>  - Maybe too clever for its own good. Some people may be confused to
> find out that it isn't actually a monetary type.
> I'm sure there are more...
>   
- Too U.S. centric.  Euro would be a slight improvement, as it doesn't
privilege one country, but still too region-centric.  Generic currency
marker from ISO 8859-1 would be even less unnecessarily specific, but
also too obscure.
- Looks funny if you use more or fewer than 2 decimal places. 
- Sacrifices clarity of meaning for brevity.
>   
> Matt
My only problem with Decimal("12.34") is the quotation marks.  It makes
it look like a string type.

Cheers,
Cliff



From akraemer at sbcglobal.net  Thu Oct 11 02:36:27 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Wed, 10 Oct 2007 23:36:27 -0700
Subject: storing meta data on dictionary keys
In-Reply-To: <mailman.66.1192075270.927.python-list@python.org>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
	<mailman.66.1192075270.927.python-list@python.org>
Message-ID: <1192084587.386653.325480@22g2000hsm.googlegroups.com>

On Oct 10, 9:00 pm, Erik Jones <e... at myemma.com> wrote:
> If you're sure that 1.  this use case won't grow and 2. that you'll
> only be the only person ever using code, then it's your choice of
> preference.  Both of those points are equally important.  1 is a
> manageability issue in that you are complicating what could be an
> easy solution for a small gain in convenience -- one that could just
> as easily be had by encapsulating the management of both dicts in an
> explicit class or function/method.  Let me quote lines 2 through 5 of
> The Zen of Python (PEP20):
>
> Explicit is better than implicit.
> Simple is better than complex.
> Complex is better than complicated.
> Flat is better than nested.
>
> Using two dicts would be explicit, simple and flat.  Your's is none
> of those.
>
> For point 2, if anyone else needs to work with your code they're most
> likely going to be confused as the implementation is overly complex.
> I know when I initially read through it I had to read it a couple
> times to assure myself of what it was doing because I was thinking
> that it seems that there's more going on than there is, so there must
> be.  Remember, the best solutions are those that not only you can
> understand, but the next guy/girl/?.

You are right, and these are all very valid points. One of the reasons
I like Python so much is the philosophy behind it. Nevertheless,
everything is relative, so a pattern that seems complex (or unusual)
at first may become simple when people get used to it ... I hope, I
may be excused. In the organization where I work I am mainly
prototyping (more on the "scientific/algorithm" side) and not required
to write maintainable code. The engineers will do that (in Java
anyway, sadly ..).

> > The trivial "class Str(str): pass" in the OP (that already inherits
> > the correct __hash__ and
> > __eq__) serves the same purpose as your Node(object) below, ...
>
> True, but you're breaking the intended abstraction of inheriting from
> str, i.e. the reason you can inherit from str is so that you can
> specialize strings, not get __has__ and __eq__ for free.  You can
> define those on your own for a reason.

Who says that that's the intended abstraction of inheriting from str?
I thought that one purpose of inheritance was the reuse of behavior
(i.e. methods) (and maybe state) of the superclass. So, my class
Str(str): pass behaves like a string in all aspects, except that you
can attach some meta data that won't affect that behavior. In fact, I
use that pattern quite frequently also for other built-in immutable
types, e.g. floats or ints, which allows me to very easily "tag"
numerical data (e.g. as an outlier in a stats application or whatever)
without affecting any subsequent code operating on it as long as it
only uses its built-in "flavor". This is the power of Python's duck
typing!

> So, (explicitly:) you want the built-in dict to be a dictionary that
> also maintains a dictionary of its own keys?

Without knowing the internals, so I may be wrong. But dict must
somehow maintain a dictionary of the key objects already. How else
could it detect collisions of hash values, when it must use __eq__ to
determine equality of the "query" key object to one of the inserted
keys having the same hash value? It also needs to do the same check
when overwriting an existing key.

> Not likely to happen.
> Again, you're asking to have one dictionary act as two and that's
> just confusing.  I'm not saying that get_key is a bad idea for
> (possibly) some use cases, just that what you're actually doing is
> creating a dictionary wherein the same key can return two different
> object depending on the retrieval method used and that is NOT what
> the built-in dict is for.  In fact, now that I think of it, get_key
> is probably a bad name for it, get_other_object_with_this_same_key is
> probably more apt :)

Or more precise:
get_key_that_was_used_when_value_was_inserted_into_dictionary :-)

Thanks, for taking the time for this elaborate response!

Cheers,
Andreas






From marcsgbrevkonto at gmail.com  Sun Oct  7 12:18:00 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 16:18:00 -0000
Subject: Newbie packages Q
In-Reply-To: <47090370$0$32758$426a74cc@news.free.fr>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
Message-ID: <1191773880.322472.100070@57g2000hsv.googlegroups.com>

On Oct 7, 6:04 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> MarkyMarc a ?crit :
> (snip)
>
> > It was simply to make a point. But then lets say the to files looks
> > like this:
>
> >  *******************************
> > atest.py:
>
> > def printA():
> >         print "This is Atest from Apack"
> > *******************************
> > btest.py:
> > from Test.apack import atest
>
> FWIW, better to stick to all_lower names for packages and modules.
>
>
>
> > def printB():
> >         print "This is Btest from Bpack"
>
> > def printatest():
> >         print atest.printA()
>
> > print printB()
> > print printatest()
> > *******************************
>
> > Now only one of them imports the other, and this most be the simplest
> > way of illustrating the intra-package references.
>
> > But how do I get this to work?
>
> You failed to specify how your files are organized, and what is "not
> working".
>
> But anyway, if
> - atest.py is in <wherever>/Test/apack,
> - both Test and apack have a __init__.py
> - <wherever> is in the sys.path,
>
> then this should just work AFAICT.

If you se me first post you will see have me files are organized. But
like this:

 Test/
      __init__.py (a empty file)
      apack/
               __init__.py (a empty file)
               atest.py
      bpack/
               __init__.py (a empty file)
               btest.py

And also in me first post(and others),
all I get is an import error: ImportError: cannot import name apack.

And sys.path is  /python/Test/bpack




From dirkheld at gmail.com  Fri Oct 19 10:32:57 2007
From: dirkheld at gmail.com (dirkheld)
Date: Fri, 19 Oct 2007 07:32:57 -0700
Subject: write whitespace/tab to a text file
Message-ID: <1192804377.123125.111850@q5g2000prf.googlegroups.com>

Hi,

I would l like to write some data to a text file. I want to write the
data with whitespace or tabs in between so that I create tabular
columns like in a spreadsheet. How can I do this in python.
(btw, I'm new to python)

names = ['John','Steve','asimov','fred','jim']
## output I would like in txt file : John         Steve
asimov      fred     jim

f=open('/User/home/Documents/programming/python/test.txt','w')
	for x in range(len(names)):
		f.write(tags[x])
	f.close()



From gagsl-py2 at yahoo.com.ar  Thu Oct 18 22:33:08 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 23:33:08 -0300
Subject: What Data is Available With a Pickled Object Over a Socket?
References: <1192746075.952684.152760@z24g2000prh.googlegroups.com>
Message-ID: <op.t0fapib5x6zn5v@gabriel2.softlabbsas.com.ar>

En Thu, 18 Oct 2007 19:21:15 -0300, milan_sanremo  
<hancock.robert at gmail.com> escribi?:

> I've read the library entry for pickle a couple of times, and I'm
> still not
> sure what data is maintained when an item is pickled and sent over a
> socket.

For most "normal" objects, all their instance attributes are stored.

> pickledMailbag = cPickle.dump(mb, HIGHEST_PROTOCOL)

Please copy&paste actual code when posting, don't retype it...
The above line should read cPickle.dumps, I presume.

> while 1:
>     pickledData = conn.recv(1024)
>     if not pickledData break

Instead of reinventing the wheel again, I'd try to use the existing server  
classes in the standard library, like SimpleHTTPServer by example. Among  
other things, you are not accumulating pickledData.

> mb = cPickle.load(pickledData)
>
> At this point, does mb contain a dictionary with the two envelopes
> with
> their data?

Asuming you managed to get pickledData right, and you use cPickle.loads:  
yes, mb should contain the same things as the original.

-- 
Gabriel Genellina



From aaron.watters at gmail.com  Wed Oct 31 15:27:16 2007
From: aaron.watters at gmail.com (Aaron Watters)
Date: Wed, 31 Oct 2007 12:27:16 -0700
Subject: marshal vs pickle
In-Reply-To: <1193852239.801436.326320@z24g2000prh.googlegroups.com>
References: <mailman.669.1193815903.13605.python-list@python.org>
	<1193838300.998229.33380@v3g2000hsg.googlegroups.com>
	<1193852239.801436.326320@z24g2000prh.googlegroups.com>
Message-ID: <1193858836.163776.31900@o3g2000hsb.googlegroups.com>

On Oct 31, 1:37 pm, Raymond Hettinger <pyt... at rcn.com> wrote:
> On Oct 31, 6:45 am, Aaron Watters <aaron.watt... at gmail.com> wrote:
>
> >  I like to use
> > marshal a lot because it's the absolutely fastest
> > way to store and load data to/from Python....
>
> I believe this FUD is somewhat out-of-date.  Marshalling
> became smarter about repeated and shared objects.  The
> pickle module (using mode 2) has a similar implementation
> to marshal

Raymond: happy days!  We are both right!
I just ran some tests from the test suite for
http://nucular.sourceforge.net with marshalling
and pickling switched in and out and to my
surprise I didn't find too much difference
on the "load" end (marshalling 10% faster),
but for the "bigLtreeTest.py" I found that
the build ("dump") process was about 1/3
slower with cPickle (mode 2/python2.4).  For
the more complex tests (mondial and gutenberg)
I found that the speed up for using marshal was
in the 1-2% range (and sometimes inverted
because of processor load I think, on a shared
hosting machine).

I'm pretty sure things were much worse for cPickle
many moons ago.  Nice to see that some things
get better :).  It makes sense that the
"dump" side would be slower because that's
where you need to remember all the objects
in case you see them again...

Anyway since it's easy and makes sense I think
the next version of nucular will have a
switchable option between marshal and cPickle
for persistant storage.

Thanks!  -- Aaron Watters

===
The pursuit of hypothetical performance
improvements is the root of all evil.
   -- Bill Tutt
http://www.xfeedme.com/nucular/pydistro.py/go?FREETEXT=tutt



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Mon Oct 29 18:08:14 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Mon, 29 Oct 2007 23:08:14 +0100
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
Message-ID: <5on3ueFnq6p5U1@mid.individual.net>

brad wrote:
> One of the criticisms of Python compared to other OO languages is
> that it isn't OO enough or as OO as others or that it is
> inconsistent. 

If OO meant "everything must be a method" then yes, Python wasn't
OO.

> And little things such as this seem to support those 
> arguments. Not that it matters really... just seems that classes
> with methods used in a more consistent manner would be more
> appropriate in an OO langauage. Is there a reason that len cannot
> be a method?

Is there any particular reason why it should be a method?

> a_string.lower() makes sense, as does a_string.split(),
> a_string.strip()... why not a_string.len()?

Just a fuzzy comment: lower, split and strip work specifically for
strings and/or sequence types, and return a modified copy of them
(or modify them directly, as with other methods like sorted or
shuffle). len, OTOH, works for much more objects and returns some
kind of norm that makes objects comparable and whose type is the
same for all objects. 

To make a long story short: Most methods do specific things with
objects; but len is a common function to get a simple property of
an object.

Regards,


Bj?rn

-- 
BOFH excuse #164:

root rot



From cousinstanley at gmail.com  Mon Oct  1 10:59:51 2007
From: cousinstanley at gmail.com (Cousin Stanley)
Date: Mon, 01 Oct 2007 09:59:51 -0500
Subject: using inspect on pygtk
References: <1191031070.901842.71210@o80g2000hse.googlegroups.com>
	<1191241809.856756.53600@19g2000hsx.googlegroups.com>
Message-ID: <1191250791_4251@sp12lax.superfeed.net>


>> I recently been trying to use the inspect module 
>> to inspect the arguments of gtk objects, such as gtk.Button. 
>> ....
>
> does anybody have any idea?

Chris .... 

  You might try the following newsgroup on the Gmane server
  for Python / Gtk questions .... 

      gmane.comp.gnome.gtk+.python


-- 
Stanley C. Kitching
Human Being
Phoenix, Arizona


----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From rodrigo.cr at gmail.com  Sat Oct 13 23:41:15 2007
From: rodrigo.cr at gmail.com (rodrigo)
Date: Sun, 14 Oct 2007 03:41:15 -0000
Subject: Entering username & password automatically using urllib.urlopen
Message-ID: <1192333275.927370.83790@i13g2000prf.googlegroups.com>

I am trying to retrieve a password protected page using:

get = urllib.urlopen('http://password.protected.url"').read()

While doing this interactively, I'm asked for  the username, then the
password at the terminal.
Is there any way to do this non-interactively? To hardcode the user/
pass into the script so I can get the page automatically?

(This is not a cracking attempt, I am trying to retrieve a page I have
legitimate access to, just doing it automatically when certain
conditions are met.)

Thanks,

Rodrigo



From erik at myemma.com  Tue Oct  9 17:09:06 2007
From: erik at myemma.com (Erik Jones)
Date: Tue, 9 Oct 2007 16:09:06 -0500
Subject: The fundamental concept of continuations
In-Reply-To: <470be561$0$24270$4c368faf@roadrunner.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<1191957606.187050.272820@v3g2000hsg.googlegroups.com>
	<470be561$0$24270$4c368faf@roadrunner.com>
Message-ID: <34D221DB-95F7-4F92-BDD2-4D5131C64413@myemma.com>

On Oct 9, 2007, at 3:32 PM, . wrote:

> On Tue, 09 Oct 2007 19:20:06 +0000, gnuist006 wrote:
>
>> On Oct 8, 11:09 pm, "." <f... at bar.biz> wrote:
>>> On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:
>>
>>>
>>>> Can anyone explain:
>>>
>>>> (1) its origin
>>>
>>> One of the lambda papers, I think.  I don't remember which.
>>
>> Hey no-name "dot" you are the only one who says its origin is in
>> one of the old lambda papers. Give me a reference or someone
>> give me a reference. I dont have access to any ACM journals or
>> other conferences. So
>
> I said "I think."  Matthias corrected me.  They're all on  
> readscheme.org
> ( http://library.readscheme.org/page1.html ) though, and well worth
> reading.
>
> I note that I'm being mocked for not using my real name by someone not
> using his/her real name.  Thank you, no-name gnuist006, you make me  
> laugh.

Relax, ., I hardly think he was mocking you.  He probably assumed  
that using a . in a sentence as a form of address would be as  
unintelligible as it has been in these two sentences.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From marcumbill at bellsouth.net  Sat Oct 27 14:44:45 2007
From: marcumbill at bellsouth.net (Bill Marcum)
Date: Sat, 27 Oct 2007 14:44:45 -0400
Subject: Alarming message when running Python code
References: <1193502350.544562.261340@k79g2000hse.googlegroups.com>
Message-ID: <slrnfi71ot.71f.marcumbill@lark.localnet>

["Followup-To:" header set to comp.os.linux.misc.]
On 2007-10-27, peter <peter.mosley at talk21.com> wrote:
> I'm not sure if this query should be directed to comp.lang.python or
> comp.os.linux.misc so I intend to post it to both with apologies if
> it's inappropriate on either.
>
> I have a small python utility which I wrote myself and which crawls
> through a directory comparing all possible pairs of files.  Under
> Windows it works fine, while the same code under Linux (Fedora Core 3)
> works for a while then starts continuously throwing up the following
> message
>
> Message from syslog at localhost at [date/time]
> localhost kernel: CPU1: Temperature above threshold
>
> While the code is continues to work, it is greatly slowed by these
> constant messages, and of ourse I am left wondering if my computer is
> about to explode!
>
> Is it really true that the code causes overheating under Linux and not
> under Windows?  Or does Windows ignore the problem (and so am I
> risking damage by running the code)? Or are the Linux messages
> spurious, and if so how can I suppress them and ensure they do not
> slow the running of the code?
>
> Grateful for any help - preferably not too technical.
>
Controlling CPU temperature is the job of the operating system and the 
hardware.  Do you have the latest version of the kernel?  Do you hear the fans 
running at full speed when your code runs?  Maybe you need new fans or a new 
heatsink, or you need to clean the ones you have.  Why are you still using FC3? 
Which version of Windows do you use? 98? XP with no service pack?


From mensanator at aol.com  Tue Oct  2 17:27:24 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 02 Oct 2007 14:27:24 -0700
Subject: Using fractions instead of floats
In-Reply-To: <mailman.1380.1191305602.2658.python-list@python.org>
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<mailman.1324.1191208415.2658.python-list@python.org>
	<slrnfg1n3e.81e.nick@irishsea.home.craig-wood.com>
	<1191284422.899591.308960@g4g2000hsf.googlegroups.com>
	<1191286998.727959.8010@50g2000hsm.googlegroups.com>
	<1191287823.018676.35640@o80g2000hse.googlegroups.com>
	<1191301175.225114.283340@50g2000hsm.googlegroups.com>
	<mailman.1380.1191305602.2658.python-list@python.org>
Message-ID: <1191360444.514028.186770@d55g2000hsg.googlegroups.com>

On Oct 2, 1:12 am, Robert Kern <robert.k... at gmail.com> wrote:
> mensana... at aol.com wrote:
> > On Oct 1, 8:17?pm, richy... at gmail.com wrote:
> >> On Oct 1, 9:03 pm, "mensana... at aol.com" <mensana... at aol.com> wrote:
>
> >>> On Oct 1, 7:20 pm, richy... at gmail.com wrote:
> >>>> On Oct 1, 8:30 am, Nick Craig-Wood <n... at craig-wood.com> wrote:
> >>>>>   >>> mpq(1,3)+0.6
> >>>>>   mpq(14,15)
> >>>> Golly!  That's quite impressive.  And more than a little bit magic as
> >>>> well, since 0.6 is definitely not the same as 3/5.  
> >>> It's not? Since when?
> >> The 0.6 above is a floating point number, mathematically very close to
> >> 0.6 but definitely not equal to it, since 0.6 can't be represented
> >> exactly as a float.
>
> > Oh, you mean something like this, right?
>
> >>>> import gmpy
> >>>> a = 0.6
> >>>> a
> > 0.59999999999999998
>
> > So, the rational should have 59999999999999998
> > in the neumerator and 100000000000000000 in the
> > denominator?
>
> Actually (5404319552844595 / 2**53) would be best.
>
> > But it doesn't
>
> >>>> b = gmpy.mpq(a)
> >>>> b
> > mpq(3,5)
>
> > Why do you suppose that is?
>
> For the same reason that str() does. See below.
>
> > For that matter, why
> > does
>
> >>>> str(a)
> > '0.6'
>
> > give me an EXACT representation?
>
> It doesn't. It just rounds at a lower number of decimal places than is necessary
> to faithfully represent the number. str() is intended to give friendly results,
> not strictly correct ones. In this case it happens that float(str(0.6)) == 0.6,
> but this is not guaranteed. For most numbers that a user or programmer might
> enter, there will only be a relatively small amount of precision necessary, and
> float(str(x)) == x will tend to hold. That's why it does this.
>
> > Didn't you just
> > say it couldn't be represented exactly?
>
> Yup.
>
> > Which is correct,
>
> >>>> str(a)
> > '0.6'
>
> > or
>
> >>>> repr(a)
> > '0.59999999999999998'
>
> > ?
>
> The latter.
>
> > How does gmpy make the conversion from float to rational?
>
> gmpy has a configurable transformation between floats and the internal
> representation. I believe the default goes through str().

How do you do that? Is it configurable at run time or something that
has to be done when compiled?

But it is still wrong to say "0.6 is definitely not the same as 3/5".
One can say 0.6 doesn't have an exact float representation and that
inexact representation is not the same as 3/5. And I suppose one can
be surprised that when this inexact representation is coerced to a
rational the result is now exact.

Would that be a fairer way of putting it?

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



From uhum2004 at freemail.hu  Wed Oct  3 04:01:12 2007
From: uhum2004 at freemail.hu (=?ISO-8859-1?Q?Istv=E1n?=)
Date: Wed, 03 Oct 2007 10:01:12 +0200
Subject: random keypress bounce in a terminal
In-Reply-To: <5mf93iFd7kugU1@mid.individual.net>
References: <mailman.1391.1191333170.2658.python-list@python.org>
	<5mf93iFd7kugU1@mid.individual.net>
Message-ID: <47034C48.6000601@freemail.hu>

Bjoern Schliessmann ?rta:
> Istv?n wrote:
>
>   
>> It works fine as long as I hit keys normally, but gives extra
>> characterts if I keep pressing some key, e.g. up or down arrow
>> keys. It runs on a Linux system. What's the wrong with it?
>>     
>
> Nothing. Linux VTs will generate multiple characters for special
> keys.
>   
I know it and I do handle it:
   ch = sys.stdin.read(1)
   if (ord(ch)==27):
    chstr=ch
    chstr+=sys.stdin.read(1)
    chstr+=sys.stdin.read(1)
   else:
    chstr=ch
Moreover, I would also state for others: the behavior of this code is 
independent of the keyboard repeating rate.
But what if it _seems_  to work differently...?
That's the reason of trying to make somebody just to see him/herself the 
symptom.
*   bfc.py 4863 bytes <http://evoran.hu/tmp/bfc.py>*
*  uni_getch.py 873 bytes <http://evoran.hu/tmp/uni_getch.py>*
*   demo1.brd 84311 bytes <http://evoran.hu/tmp/demo1.brd>*
*   demo2.brd 84336 bytes <http://evoran.hu/tmp/demo2.brd>
http://www.evoran.hu/tmp/
*Please, check somebody and explain how is possible what is impossible....
Istvan


From sunburned.surveyor at gmail.com  Mon Oct 22 15:01:34 2007
From: sunburned.surveyor at gmail.com (Sunburned Surveyor)
Date: Mon, 22 Oct 2007 12:01:34 -0700
Subject: Automatic Generation of Python Class Files
In-Reply-To: <471cf0b0$0$24416$426a74cc@news.free.fr>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<471cf0b0$0$24416$426a74cc@news.free.fr>
Message-ID: <1193079694.562850.88100@z24g2000prh.googlegroups.com>

On Oct 22, 11:47 am, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> Sunburned Surveyor a ?crit :
>
> > On Oct 22, 10:26 am, "Chris Mellon" <arka... at gmail.com> wrote:
>
> (snip)
> >>I can't think of a single reason why you would ever want to do this,
> >>since your "list of method and property names" would be just as
> >>verbose as just typing the actual python code.
>
> >>Auto generated documentation stubs are considered harmful because they
> >>take the place of real documentation.- Hide quoted text -
>
> (snip)
>
> > I don't think I understand how this would be the same amount of
> > typing.
>
> For any well-designed, non-trivial code, my guess is that your solution
> will end up needed *at least* as much typing. Trivial code doesn't of
> course need any kind of code generation - doing it directly will be
> faster anyway. I won't of course talk about badly-designed code...
>
> > Consider the following example that would generate a Monster
> > class file from an input text file (I only did one property and method
> > in generated class file.):
>
> > Contents of input text file:
>
> > [Name]
> > Fire Breathing Dragon
>
> Why do you put spaces in the name ?
>
> > [Properties]
> > Strength
> > Scariness
> > Endurance
>
> > [Methods]
> > eatMaiden argMaiden
> > fightKnight argKnight
>
> > Generated Python Class File:
>
> > def class FireBreathingDragon:
>
> should be:
>
> class FireBreathingDragon(object):
>
> >    def getStrength(self):
>
> You don't need these getters and setters. Python has support for
> computed attributes (look for 'property'), so until you need to control
> access, a plain attribute is all you need. IOW:
>
> class FireBreathingDragon(object):
>     def __init__(self, strength):
>        self.strength = strength
>
>     def eat_maiden(self, maiden):
>        raise NotImplementedError
>
> <ot>following pep08 (coding style) might be a good idea</ot>
>
> Now if you're doing RPG, there will certainly be some mandatory
> attributes for all characters, both players and non-players - IOW,
> things like strength, endurance etc belong to a base 'Character' class.
> And I seriously doubt that methods like 'eat_maiden' or 'fight_knight'
> will survive the first design round... But anyway, a somewhat more
> realistic example would look like:
>
> from MyRPG import NonPlayerCharacter, FireBreather
>
> class FireBreathingDragon(NonPlayerCharacter, FireBreather):
>    def __init__(self, *args, **kw):
>      super(FireBreathingDragon, self).__init__(*args, **kw)
>      # other class-specific code here, else might as well
>      # just skip the initializer        
>
>     def eat_maiden(self, maiden):
>        # code here
>
>     def fight_knight(self, knight):
>        # code here
>
> Sorry, but I don't see the benefit of your code-generator here.
>
> >       """
> >       Docstring goes here.
>
> >       @return
> >       @rtype
> >       """
>
> I don't need nor want such a docstring in my code, thanks.
>
> Don't take it bad - there are languages that requires so much
> boilerplate that without code-generators, productivity tends to drop
> near zero. But that's not the case with Python.

Bruno wrote: "Why do you put spaces in the name ?"

I made a mistake here.

Bruno wrote: "You don't need these getters and setters. Python has
support for
computed attributes (look for 'property'), so until you need to
control
access, a plain attribute is all you need."

So I don't use getters, setters, and the property() function unless I
need to control how a property is accessed. Is this correct?

Bruno wrote: "And I seriously doubt that methods like 'eat_maiden' or
'fight_knight'
will survive the first design round... "

I'm not really designing an RPG. I was jsut trying to come up with a
simple example. What you said about inheriting from a base class like
Character makes sense. I am curious thought, what sounds wrong with
methods like "eatMaiden" and "fightKnight". Are you thinking they
should have been something like "eatCharacter" and "fightCharacter"
instead? I only ask because I am trying to learn how to write well
designed Python code. :]

Bruno wrote: "I don't need nor want such a docstring in my code,
thanks."

I guess epydoc isn't for everyone? :] Maybe I like it because it
reminds me of Javadoc. It seemed useful to me because it helped define
a "protocol" that could be followed for proper use of an object. Maybe
I am trying to replace Java's static typing system with source code
comments?

Bruno wrote: "Don't take it bad - there are languages that requires so
much
boilerplate that without code-generators, productivity tends to drop
near zero. But that's not the case with Python."

This thread is helping me to realize this. I suppose the only thing my
generator would be good for is the doc comments, and it doesn't sound
like most of you would want those anyways.

Thanks for the feedback.

Scott Huey








From nick.bastin at gmail.com  Fri Oct  5 01:57:21 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Fri, 5 Oct 2007 01:57:21 -0400
Subject: Real time plot
In-Reply-To: <47051599$0$27367$ba4acef3@news.orange.fr>
References: <004d01c805a1$7295e9c0$1a02a8c0@ERTF.ERTF.COM>
	<mailman.1493.1191484119.2658.python-list@python.org>
	<47051599$0$27367$ba4acef3@news.orange.fr>
Message-ID: <66d0a6e10710042257h59f69afche3576eac9af407af@mail.gmail.com>

On 10/4/07, Jean-Francois Canac <jfcanac at free.fr> wrote:
> mailman.1493.1191484119.2658.python-list at python.org...
> > I would draw dots on a suitably sized Tkinter canvas, after drawing a
> > schematic
> > of the race track (laborious).
> >
> > 20 per second will be no problem, provided the machine is half decent.
> >
> > What is the speed at which the com port runs?
> >
> > - Hendrik
> >
> The com port run at 19.2 kb/s.
> My pb is more the real time aspect: to see the plot changing in real time
> than the com aspect as the installation is already running with programs in
> c++.
> The PC on which it is running is good enought
> For me the interest is to migrate all taht on python to be able to make fast
> changes when it is of interest

The success of this will have more to do with design than programming
language.  Any GUI toolkit which allows partial screen updates can be
made to update at least as fast as your screen refresh rate, even in
python.

--
Nick


From frank at chagford.com  Sat Oct 27 01:58:23 2007
From: frank at chagford.com (Frank Millman)
Date: Fri, 26 Oct 2007 22:58:23 -0700
Subject: simple question on dictionary usage
In-Reply-To: <ffuerv$12ih$1@stationair.kjsl.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
Message-ID: <1193464703.330534.279080@22g2000hsm.googlegroups.com>


Frank Stutzman wrote:
> My apologies in advance, I'm new to python
>
> Say, I have a dictionary that looks like this:
>
> record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
>         'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339',
>         'E6': '1182', 'RPM': '996', 'C6': '311', 'C5': '300',
>         'C4': '349', 'CLD': '0', 'E5': '1148', 'C2': '329',
>         'MAP': '15', 'OIL': '167', 'HP': '19', 'E1': '1137',
>         'MARK': '', 'E3': '1163', 'TIME': '15:43:54',
>         'E2': '1169'}
>
> From this dictionary I would like to create another dictionary calld
> 'egt') that has all of the keys that start with the letter 'E'.  In
> otherwords it should look like this:
>
> egt = {'E6': '1182','E1': '1137','E4': '1157','E5': '1148',
>        'E2': '1169','E3': '1163'}
>

This should work -

egt = dict([i for i in d.items() if i[0].startswith('E')])

Frank Millman



From ldo at geek-central.gen.new_zealand  Sun Oct 14 18:56:39 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 15 Oct 2007 11:56:39 +1300
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<see-36543E.18592809102007@lust.ihug.co.nz>
Message-ID: <feu6r7$ccu$1@lust.ihug.co.nz>

In message <see-36543E.18592809102007 at lust.ihug.co.nz>, Barb Knox wrote:

> Instead of function A returning to its caller, the
> caller provides an additional argument (the "continuation") which is a
> function B to be called by A with A's result(s).

That's just a callback. I've been doing that in C code (and other
similar-level languages) for years.


From mail at microcorp.co.za  Sat Oct 13 03:41:41 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 13 Oct 2007 09:41:41 +0200
Subject: Moving objects in Tkinter
References: <23614.5396.qm@web38409.mail.mud.yahoo.com>
Message-ID: <019701c80d75$29ddde00$03000080@hendrik>


 Evjen Halverson  wrote:

>  I have tried to make a Tkinter program make a 
> rectangle move down the window,
> but did not succeed. All it does is
> make a rectangle trail.
>  What am I doing wrong?

You are not deleting the old instances of the rectangle.
Look at the delete method of the canvas widget.
This is Gold Plated Guaranteed  (Tm)  to work.

There is an alternative too, which I have never used,
so no Gold Plated Guarantee.
Look at the coords method of the canvas widget.
It seems to let you get and set the position of 
something.

HTH - Hendrik




From michele.simionato at gmail.com  Sat Oct  6 04:33:22 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sat, 06 Oct 2007 08:33:22 -0000
Subject: Yet another comparison of Python Web Frameworks
Message-ID: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>

At work we are shopping for a Web framework, so I have been looking at
the available options
on the current market. In particular I have looked at Paste and Pylons
and I have written my
impressions here:

http://www.phyast.pitt.edu/~micheles/python/yet-another-comparison-of-web-frameworks.html

I do not speak too well of Pylons, so if you thing I am wrong feel
free to correct me here ;)


     Michele Simionato



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 11 12:51:01 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 11 Oct 2007 18:51:01 +0200
Subject: Declarative properties
In-Reply-To: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
Message-ID: <470e5437$0$13047$426a34cc@news.free.fr>

Artur Siekielski a ?crit :
> Hi.
> 
> I would like to have declarative properties in Python, ie. something
> like slots definitions in defclass in Common Lisp. It seems that even
> Java will have it, using a library ( https://bean-properties.dev.java.net/
> ).
> 
> I know about 'property' function

Actually, it's a class.

> in Python, but it's normal usage
> isn't declarative, because I have to code imperatively getters and
> setters:

Indeed. What would be the use of a property (AKA computed attribute) if 
you don't need to do something specific ?

> class Person(object):
>    def __init__(self, name):
>       self._name = name
>    def _get_name(self):
>       return self._name
>    def _set_name(self, new_name):
>       self._name = new_name
>    name = property(_get_name, _set_name)

While it's often seen as demonstration code for a property, it's 
actually totally useless. If all you want to do is to get and set an 
attribute (I mean, without any computation anywhere), then just use an 
attribute - you will always be able to turn it into a property if and 
whene the need arises.

> I would like to have something like that:
> 
> class Person(object):
>    name = property('_name')
> 
> I assume that this causes "generation" of instance field '_name' and
> default getters and setters.

So far, it's a waste of time. That's exactly what you'd get with a plain 
attribute, with far less complexity and overhead.

> And if I would like to customize (g|
> s)etters, I would write them by hand,

Which bring us back to how properties actually work !-)

> or, better, use more declarative
> approach (like @NotNull annotations in Java version).

> I could probably code a solution to my problem with help of wonderful
> introspection functionalities. But I'm looking for a standard and/or
> proven way of doing this. Maybe some PEP is being prepared for this?

I guess you want to have a look at the descriptor protocol - it's what 
makes properties work, and it allow you to write your own custom 'smart 
attributes'. If you want automatic validation/conversion, you could 
write custom descriptors working with the FormEncode package (I started 
such a thing for Elixir, but had no time to finish it so far). It would 
then looks like:

class Person(object):
   name = StringField(empty=False)

   // etc

HTH


From ptmcg at austin.rr.com  Tue Oct 16 08:32:06 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 16 Oct 2007 05:32:06 -0700
Subject: easy but difficult
In-Reply-To: <mailman.57.1192532023.13605.python-list@python.org>
References: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
	<mailman.57.1192532023.13605.python-list@python.org>
Message-ID: <1192537926.685336.36090@z24g2000prh.googlegroups.com>

On Oct 16, 5:46 am, "Amit Khemka" <khemkaa... at gmail.com> wrote:
> On 10/16/07, Beema shafreen <beema.shafr... at gmail.com> wrote:
>
>
>
>
>
> > hi everybody,
> >   I have  a file  separated by hash:
> > as shown below,
> > file:
> > A#1
> > B#2
> > A#2
> > A#3
> > B#3
>
> > I need the result like this:
> > A 1#2#3
> > B 2#3
>
> > how will generate the result like this from the above file
> > can somebody tell me what i have to do......
> > My code:
> >           fh =open('abc_file','r')
> >           for line in fh.readlines():
> >                    data = line.strip().split('#')
> >                     for data[0] in line
> >                             print line
>
> > I tried but i donot know how to create 1#2#3 in a single line
> > regards
> > shafreen
>
> While looping over the file you may store alphabets as key in a
> dictionary and numbers as values.
>
> for example:
>
> <code_untested>
> d = {}
> for line in open('abc_file'):
>    data = line.strip().split('#')
>    # add the numbers to the 'alphabet' key as a list
>    d[data[0]] = d.get(data[0], []) + [data[1]]
> <code_untested>
>
> Now you can just iterate over the dictionary and write it into a file
>
> Cheers,
>
> --
> --
> Amit Khemka- Hide quoted text -
>
> - Show quoted text -

Another technique that helps improve script readability is to assign
the results of the split into separate variables, instead of just a
list.  This way you can refer to the items with meaningful names
instead of less readable index-into-the-list references:

for line in open('abc_file'):
   datakey,datavalue = line.strip().split('#')
   # add the numbers to the 'alphabet' key as a list
   d[datakey] = d.get(datakey, []) + [datavalue]

-- Paul





From nospam at nospam.com  Sat Oct  6 10:01:34 2007
From: nospam at nospam.com (Mark T)
Date: Sat, 6 Oct 2007 07:01:34 -0700
Subject: slice with negative stride
References: <1191672336.230508.50600@o3g2000hsb.googlegroups.com>
Message-ID: <cuydnVn7uYylCJranZ2dnUVZ_g-dnZ2d@comcast.com>


<ajcppmod at gmail.com> wrote in message 
news:1191672336.230508.50600 at o3g2000hsb.googlegroups.com...
> I'm really confused about results of slices with negative strides. For
> example
>
>>>mystr = 'my string'
>
> I would have then thought of the contents of mystr as:
>
> indices    0 1 2 3 4 5 6 7 8
> content    m y   s t r i n g
>
> with mystr[:3] = 'my '
>
> Can someone explain to me how mystr[:3:-1] = 'gnirt'?
>
> I was expecting the result to be mystr[:3] reversed (' ym') i.e slice
> then reverse or even the first 3 elements of the string after being
> reversed ('gni') i.e. reverse then slice.
>
> Thanks
>
> Andy
>

When the step is negative, a missing start is interpreted as the end of the 
string.  A slice always includes the start index character through, but not 
including, the end index character.  In your example, the end index 
character was mystr[3], so you received the end of the string ('g') down to 
but not including 's', which is 'gnirt'.

To see the indices a slice is using, use the slice object's indices method. 
Given the length of a string, it returns the exact start,stop,step indices 
used:

>>> mystr='my string'
>>> s=slice(None,3,-1)
>>> s.indices(len(mystr))  # start is the end of the string if step is 
>>> negative
(8, 3, -1)
>>> mystr[8],mystr[3]
('g', 's')
>>> mystr[8:3:-1]
'gnirt'
>>> s=slice(None,3,1)
>>> s.indices(len(mystr))  # start is the beginning of the string if step is 
>>> positive
(0, 3, 1)
>>> mystr[0],mystr[3]
('m', 's')
>>> mystr[0:3:1]
'my '

-Mark T




From MDiPierro at cti.depaul.edu  Tue Oct 16 14:37:04 2007
From: MDiPierro at cti.depaul.edu (DiPierro, Massimo)
Date: Tue, 16 Oct 2007 13:37:04 -0500
Subject: re.sub
In-Reply-To: <47150524.5090104@tim.thechases.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>,
	<4715010B.7080203@tim.thechases.com>
	<C1AA20CAC1E41647BFF1D41215EDD4755C48F84DD0@wagner.cti.depaul.edu>,
	<47150524.5090104@tim.thechases.com>
Message-ID: <C1AA20CAC1E41647BFF1D41215EDD4755C48F84DD2@wagner.cti.depaul.edu>

Thank you this answers my question. I wanted to make sure it was actually designed this way.

Massimo

________________________________________
From: Tim Chase [python.list at tim.thechases.com]
Sent: Tuesday, October 16, 2007 1:38 PM
To: DiPierro, Massimo
Cc: python-list at python.org; Berthiaume, Andre
Subject: Re: re.sub

> Let me show you a very bad consequence of this...
>
> a=open('file1.txt','rb').read()
> b=re.sub('x',a,'x')
> open('file2.txt','wb').write(b)
>
> Now if file1.txt contains a \n or \" then file2.txt is not the
> same as file1.txt while it should be.

That's functioning as designed.  If you want to treat file1.txt
as a literal pattern for replacement, use re.escape() on it to
escape things you don't want.

   http://docs.python.org/lib/node46.html#l2h-407

Or, you can specially treat newlines:

   b=re.sub('x', a.replace('\n', '\\n'), 'x')

or just escape the backslashes on the incoming pattern:

   b=re.sub('x', a.replace('\\', '\\\\'), 'x')

In the help for the RE module's syntax, this is explicitly noted:

http://docs.python.org/lib/re-syntax.html
"""
If you're not using a raw string to express the pattern, remember
that Python also uses the backslash as an escape sequence in
string literals; if the escape sequence isn't recognized by
Python's parser, the backslash and subsequent character are
included in the resulting string. However, if Python would
recognize the resulting sequence, the backslash should be
repeated twice. This is complicated and hard to understand, so
it's highly recommended that you use raw strings for all but the
simplest expressions.
"""

The short upshot:  "it's highly recommended that you use raw
strings for all but the simplest expressions."

Thus, the string that you pass as your regexp should be a regexp.
  Not a "python interpretation a regexp before the regex engine
gets to touch it".

-tkc


From teroV at nowhere.invalid  Thu Oct 25 12:39:28 2007
From: teroV at nowhere.invalid (TeroV)
Date: Thu, 25 Oct 2007 19:39:28 +0300
Subject: python project ideas
In-Reply-To: <dj2Ui.5230$h67.5014@newsfe1-win.ntli.net>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
	<dj2Ui.5230$h67.5014@newsfe1-win.ntli.net>
Message-ID: <4F3Ui.242834$TZ6.221809@reader1.news.saunalahti.fi>

Neil Wallace wrote:
> On Thu, 25 Oct 2007 04:09:00 +0000, menkaur at gmail.com wrote:
> 
>> hi to everyone
>> I wondered if this might be the right place to ask for some ideas for
>> python project for university.
>> I'd like it to be something useful and web-based. And the project must
>> be complete in 2-3 months by 2-3 person group. May be something useful
>> for open source or python community ... Well, just post what you think
>> could be appropriate ...
> 
> How about a linux GUI for truecrypt ?

Since there is no GUI tool (that I'm aware of) I might even use it! :)


From no.reply at here.com  Wed Oct  3 06:53:15 2007
From: no.reply at here.com (Anonymous)
Date: Wed, 03 Oct 2007 11:53:15 +0100
Subject: interfacing Python interpreter with a VB6 frontend
In-Reply-To: <mailman.1442.1191408542.2658.python-list@python.org>
References: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>
	<mailman.1442.1191408542.2658.python-list@python.org>
Message-ID: <T8SdnSZ71aS-6J7aRVnytAA@bt.com>



Ryan Ginstrom wrote:

>>On Behalf Of Anonymous
>>This requires several steps, but the one I am having most 
>>problem finding info on is the ff:
>>
>>1. using/interacting the Python interpreter from VB6
> 
> 
> One way to do this might be by creating a COM server with Python, and having
> VB feed it lines of text and then collect results of execution for display.
> 
> win32com has demos of COM servers.
> 
> --
> Regards,
> Ryan Ginstrom
> 

Hi Ryan, do you have a link to the resources you mentioned?. I did a 
search for win32com - and found this : 
http://python.net/crew/mhammond/win32/FAQ.html  (most of the links were 
either dead, or refrerred to using COM from within Python - i.e. the 
OTHER way round).


From chris at percious.com  Wed Oct 10 16:18:02 2007
From: chris at percious.com (percious)
Date: Wed, 10 Oct 2007 20:18:02 -0000
Subject: SVN and Setuptools
Message-ID: <1192047482.208978.147790@g4g2000hsf.googlegroups.com>

I have been thinking a lot about versioning and release of software
and I was wondering if what I came up with exists.

What I would like to do is create a daemon that sits and checks an SVN
repository for tags.  When it finds a new tag, it would create an egg
for that tag and upload it to an ftp site (PiPY).

Does something like this already exist?

Also on that note.  Lets say I have a version-dependent set of data
(like in a berkeley database) and In order to extract that data, I
have to retrieve a set of code from an SVN repository, stuff it in a
"working" path, import the modules I need, and extract the data.  Does
anyone have a good example of this?

Thanks a lot guys.
-chris



From jcd at sdf.lonestar.org  Tue Oct  9 14:39:09 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Tue, 9 Oct 2007 14:39:09 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191954101.289278.216770@g4g2000hsf.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<5n1ebbFfok0sU1@mid.uni-berlin.de>
	<1191954101.289278.216770@g4g2000hsf.googlegroups.com>
Message-ID: <20071009183909.GA1719@sdf.lonestar.org>

On Tue, Oct 09, 2007 at 11:21:41AM -0700, mensanator at aol.com wrote regarding Re: pytz has so many timezones!:
> 
> The Earth says. It takes 24 hours to revolve.
> 
> > Why aren't they separated by 30minutes, or 20, or 10? Or 2 hours?
> 
> Why isn't an hour defined to be 30 minutes?
> 
> > Or why don't we have a global time?
> 
> Like UTC?
> 
> >
> > Your 25 timezones are an abstraction the same way
> 
> Not the same way at all. The 25 timezones I speak of are
> not merely an abstraction, but related to longitude.
> 
> > as are the 400 apparently in use by people all over the world
> 
> Where the correlation to longitude is much looser.
> Granted, it doesn't need to be for non-navigational
> purposes. And although governments can legislate things
> like DST, they can't legislate longitude.
> 
> > - and last time I checked, there was no
> > fundamental law in physics or such that limited the allowed or sensible
> > number of timezones...
> 
> Isn't there some law somewhere that says the circumference
> of a sphere is 360deg? Doesn't that same law mean that no two
> points on a sphere can be seperated by more than 180deg
> longitude? Doesn't that make GMT+13 non-sensible?
> 

You seem to be talking about time zones as if they are a scientific abstraction based on the physical layout of the earth.  They are not.  They are an abstraction away from true scientific (solar) time to give us regular 24 hour days, and to simplify calculation to make sure that trains don't run into one another for having left their respective stations at times based on locally defined solar noon.  Solar time is the only kind of time that doesn't have to take political considerations into account.  

GMT+13 is not non-sensible at all, if the major trade partners of the island in question are at GMT+12.  Imagine the confusion not being able to schedule meetings on monday or friday because your next door neighbor, one time zone away, is actually off-calendar from you by one day.  The IDL was arbitrarily placed in the middle of the pacific to limit this problem to as few people as possible, but the people of Kiribati have no reason to accept the disadvantage under which this (European) abstraction places them.  What would be non-sensible is for them to live 23 hours offset from their closest neighbors and family, while living a mere three hours offset from people that they have minimal contact with.  

Cheers,
Cliff


From zentraders at gmail.com  Thu Oct 25 20:30:57 2007
From: zentraders at gmail.com (Zentrader)
Date: Thu, 25 Oct 2007 17:30:57 -0700
Subject: Delete all not allowed characters..
In-Reply-To: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
Message-ID: <1193358657.870729.271080@t8g2000prg.googlegroups.com>

> ....And my problem this function replace the character to "" but i
> want to " "
> for example:
> input: Exam%^^ple
> output: Exam   ple
> I want to this output but in my code output "Example"

I don't think anyone has addressed this yet.  It would be
if chr found_in_allowed_set:
   output_string += chr
else:
   output_string += " "
This Is Just A General Example of code to use.  You probably would not
use 'output_string +=' but whatever form the implementation takes, you
would use an if/else

 Nice, I did not know that string translation exists, but Abandoned
have
> defined allowed characters, so making a translation table for the
> unallowed characters, which would take nearly complete unicode character
> table would be inefficient.

And this is also bad logic.  If you use a 'not allowed', then
everything else will be included by default.  Any errors in the 'not
allowed' or deviations that use an additional unicode character will
be included by default.  You want to have the program include only
what it is told to include  IMHO.



From deets at nospam.web.de  Mon Oct 15 06:28:10 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 15 Oct 2007 12:28:10 +0200
Subject: Twisted (or for loops ?) madness
References: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
	<1192443010.957983.81970@q3g2000prf.googlegroups.com>
Message-ID: <5ngtlrFhvihtU1@mid.uni-berlin.de>

looping wrote:

> On Oct 15, 9:46 am, looping <kad... at gmail.com> wrote:
>> l = [ct1, ct2, ct3]
>> for c in l:
>>     d.addCallback(lambda result: c.compile())
>>
>> reactor.callLater(20, reactor.stop)
>> reactor.run()
>>
>> Output:
>>
>> Compile : *OBJECT 1*
>> <__main__.CompilerThread object at 0x00BAD030>
>> Start : *OBJECT 1*
>> Compiler result : *OBJECT 1* *OBJECT 1*
>> Compile : *OBJECT 3*
>> <__main__.CompilerThread object at 0x00CD9470>
>> Start : *OBJECT 3*
>> Compiler result : *OBJECT 3* *OBJECT 3*
>> Compile : *OBJECT 3*
>> <__main__.CompilerThread object at 0x00CD9470>
>> Start : *OBJECT 3*
>> Compiler result : *OBJECT 3* *OBJECT 3*
>>
>> OBJECT 3 run 2 times and OBJECT 2 never ?!?
>>
>> Any idea ? Maybe something related to Threads ?
>> Thanks for your help.
> 
> After further tests, it look like it is the lambda that cause the
> problem:
> -Adding a parameter result to compile(self, result)
> -Changing d.addCallback(lambda result: c.compile()) for
> d.addCallback(c.compile)
> 
> And everything run fine.
> 
> Why lambda doesn't work ? (variable scope problem ?)

Yes. When defined, the lambda inherits the surrounding scope - which
contains the name c, that is bound to the last instance of the iteration.

What you need to do is to introduce a scoped variable inside the lambda at
creation time - e.g. like this:

for a in 1,2,3:
   d.addCallback(lambda arg=a: work(a))

Diez


From gherron at islandtraining.com  Mon Oct 15 02:30:18 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Sun, 14 Oct 2007 23:30:18 -0700
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
Message-ID: <471308FA.3070705@islandtraining.com>

Dmitri O.Kondratiev wrote:
>
> The function I wrote (below) reverses lists all right: 
>
> def reverse(xs):
>     if xs == []:
>         return []
>     else:
>         return (reverse (xs[1:])) + [xs[0]]
>
>  
> >>> reverse ([1,2,3])
> [3, 2, 1]
> >>> 
>
>
> Yet when I try to reverse a string I  get:
>
> >>> reverse ("abc")
>
> ...
> ...
> ...
>
>   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
>     return (reverse (xs[1:])) + [xs[0]]
>
>   File "C:\wks\python-wks\reverse.py", line 5, in reverse
>
>     return (reverse (xs[1:])) + [xs[0]]
>
>   File "C:\wks\python-wks\reverse.py", line 2, in reverse
>
>     if xs == []:
>
> RuntimeError: maximum recursion depth exceeded in cmp
>
> >>> 
>
> What's wrong? Why recursion never stops?
>
If you are doing this as an python-learning exercise, then read on.   If
you are doing this reversal for real code, then try:

  xs.reverse() for in-place reversal of a list (but not a string), or
  result = xs[::-1] for creating a reversed copy of either a string or a
list


Your recursion stops when xs == [], but when you're stripping characters
off a string,  like 'abc', the remaining portion will be 'bc', then 'c',
than '', but never [] so you 'll never stop.

Try:

if xs == []:
    return []
elif xs == '':
    return ''
else:
    ...


Gary Herron


>
> Thanks,
> Dima



From rcdailey at gmail.com  Thu Oct 11 00:35:53 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 23:35:53 -0500
Subject: How to "dereference" an iterator?
In-Reply-To: <470DA066.8080704@decode.com.ar>
References: <496954360710101601s5cc774dby16f01ba532ef096e@mail.gmail.com>
	<mailman.54.1192059622.927.python-list@python.org>
	<13gr3jhgkvvahbf@corp.supernews.com>
	<496954360710102024i1e00dc3ei2372b003f402143b@mail.gmail.com>
	<470DA066.8080704@decode.com.ar>
Message-ID: <496954360710102135v37972723h5963b65311a4fc7d@mail.gmail.com>

Thanks! Yellow is my favorite color!

On 10/10/07, Pablo Ziliani <pablo at decode.com.ar> wrote:
>
> Robert Dailey wrote:
> > (...)
> > What I was actually trying to accomplish was to iterate over 2
> > iterators using 1 for loop, however I found that the zip() function
> > allows me to do this quite easily:
> >
> > list1 = [1,2,3]
> > list2 = [4,5,6]
> >
> > for i1,i2 in zip( list1, list2 ):
> >     # do something here...
> >
> > In one of my earlier threads in this group someone had ended up using
> > zip(). After reviewing that thread again I found that I could also use
> > it to solve this problem as well. Sorry for lack of details. Thanks
> > for everyone's help.
>
> Robert,
>
> You get one warning for top-posting and a yellow card for not being able
> to state your needs correctly (so we can help you). Think pythonicly:
> nobody actually *needs* to "dereference an iterator", but to get a
> certain value from a some given sequences.
>
> Despite the subject, you ended up using a "iterator-less" solution.
> There are reasons to use an iterator, though. You might want to take a
> look at itertools.izip:
>
> class izip(__builtin__.object)
> |  izip(iter1 [,iter2 [...]]) --> izip object
> |
> |  Return a izip object whose .next() method returns a tuple where
> |  the i-th element comes from the i-th iterable argument.  The .next()
> |  method continues until the shortest iterable in the argument sequence
> |  is exhausted and then it raises StopIteration.  Works like the zip()
> |  function but consumes less memory by returning an iterator instead of
> |  a list
>
>
> Lame example follows:
>
> >>> from itertools import izip
> >>> from string import lowercase
> >>> for (i, l) in izip(range(len(lowercase)), lowercase):
> ...     print "do something with i = %s and l = %s" % (i, l)
> ...
> do something with i = 0 and l = a
> do something with i = 1 and l = b
> do something with i = 2 and l = c
> do something with i = 3 and l = d
> do something with i = 4 and l = e
> do something with i = 5 and l = f
> do something with i = 6 and l = g
> do something with i = 7 and l = h
> do something with i = 8 and l = i
> do something with i = 9 and l = j
> do something with i = 10 and l = k
> do something with i = 11 and l = l
> do something with i = 12 and l = m
> do something with i = 13 and l = n
> do something with i = 14 and l = o
> do something with i = 15 and l = p
> do something with i = 16 and l = q
> do something with i = 17 and l = r
> do something with i = 18 and l = s
> do something with i = 19 and l = t
> do something with i = 20 and l = u
> do something with i = 21 and l = v
> do something with i = 22 and l = w
> do something with i = 23 and l = x
> do something with i = 24 and l = y
> do something with i = 25 and l = z
>
>
> HTH,
> Pablo
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/bbc07bcd/attachment.html>

From ggpolo at gmail.com  Wed Oct 24 15:37:08 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Wed, 24 Oct 2007 17:37:08 -0200
Subject: crontab library
In-Reply-To: <5fa6c12e0710241212v7c675a1dp9c87d3c9f98df261@mail.gmail.com>
References: <5fa6c12e0710241212v7c675a1dp9c87d3c9f98df261@mail.gmail.com>
Message-ID: <ac2200130710241237k4ecf4a77jeef2c6fc16f0fb06@mail.gmail.com>

2007/10/24, Martin Marcher <martin at marcher.name>:
> Hello,
>
> is anyone aware of a crontab library.
>
> Possibly even more complete, something that will let me
> create/manipulate/delete crontab entries in a nice way and install the
> new crontab accordingly.
>
> I had a look at the crontab docs and never realized how complex it
> actually is. So before I spend time in creating such a thing maybe
> someone did it already :)
>

When you say complex, are you talking about the possible ways to
define when your job runs ? You could use a parser for the time format
it uses, like this:
http://umit.svn.sourceforge.net/viewvc/umit/branch/ggpolo/umitCore/CronParser.py?revision=1175&view=markup

I believe using this parser or some other would cut all the
difficulty, then it is all about creating a gui/cli/etc based on it or
extend it.. it is up to you =)

> thanks
> martin
>
> --
> http://noneisyours.marcher.name
> http://feeds.feedburner.com/NoneIsYours
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves


From KDawg44 at gmail.com  Thu Oct 11 09:44:25 2007
From: KDawg44 at gmail.com (KDawg44)
Date: Thu, 11 Oct 2007 13:44:25 -0000
Subject: Script to Remove Attachments in Exchange Mailbox
Message-ID: <1192110265.529187.48770@y42g2000hsy.googlegroups.com>

Hi,

I am frustrated with my users who send large files around the office
instead of using the network shares.

For instance, this is one of many emails I have sent around:

"If you take the this kit it looks like J sent it to D, D sent it to
you, then you sent it to me.  The problem with that is just that now
there are copies of this file:


On J's drive or Comm drive
J's sent items
D's inbox
D's sent items
Your inbox
Your sent items
My inbox
The comm. Drive once I save it there to be used.

Which means that there are 8 copies of the same file 4MB taking up
space, or a 4MB file turned into a 32MB file."

My users just aren't getting it!  And then they complain when they get
quota messages!  (and some people, when they are Important People, you
cannot argue with).

So, what I would like, is to write a script that parses the exchange
mailbox, and removes all attachments over a certain size (say 500K)
that are attached to messages that are more than 2 weeks old, or that
are in sent items.  I would like to write to a log file all the
changes that are made then email that log file to the mailbox that was
just trimmed.

I will also like to have a verbose mode that allows the user when the
script is run to ok each removal.

I am trying to decide if I should do this in Python or VBScript.  Any
suggestions?

Thanks.



From rsachetto at gmail.com  Mon Oct 22 15:38:33 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Mon, 22 Oct 2007 17:38:33 -0200
Subject: Iteration for Factorials
In-Reply-To: <1193080349.610343.95430@v23g2000prn.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193080349.610343.95430@v23g2000prn.googlegroups.com>
Message-ID: <250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>

This works:

def fact(x):
    if x == 0 or x == 1:
        return 1
    else:
        return reduce(operator.mul, xrange(1,x+1))

or

def factorial(n):

    acc = 1

    while n > 1:
      acc = acc * n
      n = n - 1

    return acc

On 10/22/07, mensanator at aol.com <mensanator at aol.com> wrote:
>
> On Oct 22, 1:35 pm, Paul Rudin <paul.nos... at rudin.co.uk> wrote:
> > "mensana... at aol.com" <mensana... at aol.com> writes:
> > > On Oct 22, 7:50 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> > >> Py-Fun <lorna.bu... at gmail.com> wrote:
> > >> > I'm stuck trying to write a function that generates a factorial of
> a
> > >> > number using iteration and not recursion.  Any simple ideas would
> be
> > >> > appreciated.
> >
> > >> This version avoids doing anything fancier than adding 1, so it
> should be
> > >> simple enough for anyone:
> >
> > >> def factorial(e):
> > >>     a = 1
> > >>     for b in range(e):
> > >>         c = 0
> > >>         for j in range(b, -1, -1):
> > >>             for d in range(a):
> > >>                 c += 1
> > >>         a = c
> > >>     return a
> >
> > > Not simple enough for my taste:
> >
> > >>>> import gmpy
> > >>>> gmpy.fac(10)
> > > mpz(3628800)
> >
> > I haven't followed all this thread, but has anyone yet done:
> >
> > import operator
> > def fact(x):
> >     return reduce(operator.mul, xrange(1,x))
>
> I hope not.
>
> >>> import operator
> >>> def fact(x):
>         return reduce(operator.mul,xrange(1,x))
>
> >>> fact(3)
> 2
> >>> fact(2)
> 1
> >>> fact(1)
>
> Traceback (most recent call last):
>   File "<pyshell#10>", line 1, in <module>
>     fact(1)
>   File "<pyshell#7>", line 2, in fact
>     return reduce(operator.mul,xrange(1,x))
> TypeError: reduce() of empty sequence with no initial value
>
> >>> fact(0)
>
> Traceback (most recent call last):
>   File "<pyshell#11>", line 1, in <module>
>     fact(0)
>   File "<pyshell#7>", line 2, in fact
>     return reduce(operator.mul,xrange(1,x))
> TypeError: reduce() of empty sequence with no initial value
>
> I think you need to make it a bit more complicated.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/608603c7/attachment.html>

From JernauEmGurgeh at googlemail.com  Wed Oct 10 14:50:24 2007
From: JernauEmGurgeh at googlemail.com (JernauEmGurgeh at googlemail.com)
Date: Wed, 10 Oct 2007 11:50:24 -0700
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <1191978311.987341.271000@r29g2000hsg.googlegroups.com>
References: <87tzt3ihev.fsf@kobe.laptop>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
	<1191978311.987341.271000@r29g2000hsg.googlegroups.com>
Message-ID: <1192042224.888211.261790@r29g2000hsg.googlegroups.com>

On 10 Oct, 02:05, nebulou... at gmail.com wrote:
> Do not bluntly contradict me in public.

2 + 2 = 5



From jeremy+complangpython at jeremysanders.net  Mon Oct 29 06:34:40 2007
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Mon, 29 Oct 2007 10:34:40 +0000
Subject: ANN: Veusz 1.0 - a scientific plotting package
References: <fg49eq$nnh$1@gemini.csx.cam.ac.uk>
	<4725b164$0$4359$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <fg4d00$1t4$1@gemini.csx.cam.ac.uk>

Wildemar Wildenburger wrote:

> Not that I don't value your effort, but why another plotting package
> while we have pyx and matplotlib already?

In addition to the Python based scripting command line and embedding
interface, it has a powerful graphical user interface for constructing
plots and importing data.  Neither matplotlib or pyx have this.
This is the main feature. It was originally intended to be mainly
command-line based, but I've found the GUI to be my main way of using it.

At the time of the first release of Veusz, and for quite long after,
matplotlib was too primitive to use as a backend for Veusz (see previous
threads on this subject). Maybe that has changed now, but IMHO Veusz output
still looks better.

Jeremy

-- 
Jeremy Sanders
http://www.jeremysanders.net/


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 08:52:18 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 17 Oct 2007 12:52:18 -0000
Subject: Displaying future times
References: <1192623606.048549.114600@y27g2000pre.googlegroups.com>
Message-ID: <13hc1c25sm4snfa@corp.supernews.com>

On Wed, 17 Oct 2007 12:20:06 +0000, ryan k wrote:

> I have a schedule of times in the future that I want to display in a
> timezone the user sets. There is a useful module
> http://www.purecode.com/~tsatter/python/README.txt (at that URL) with a
> function that takes seconds from the epoch and a time zone and returns
> what is basically a datetime object.
> 
> My question is how to I display the seconds from the epoch for a
> datetime object (which will be a datetime in the future) for the UTC
> timezone?

Is this a trick question? Won't the answer be "The same way you would for 
a datetime in the past"?


To get the number of seconds from the epoch, see the function timegm() in 
the calendar module.



-- 
Steven.


From piet at cs.uu.nl  Tue Oct  2 04:04:35 2007
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Tue, 02 Oct 2007 10:04:35 +0200
Subject: Tapping into the access of an int instance
References: <mailman.818.1190308885.2658.python-list@python.org>
	<1190314252.264152.180750@57g2000hsv.googlegroups.com>
Message-ID: <m2przyymb0.fsf@cs.uu.nl>

>>>>> chris.monsanto at gmail.com (CM) wrote:

>CM> On Sep 20, 1:21 pm, "Tor Erik S?nvisen" <toreri... at gmail.com> wrote:
>>> Hi,
>>> 
>>> Does anyone know how to interrupt the lookup of an integer value? I
>>> know I need to subclass int, since builtin types can't be altered
>>> directly...
>>> 
>>> Below is how far I've come... What I want is to tap into the access of
>>> instance i's value 1...
>>> 
>>> >>> class Int(int):
>>> 
>>> def __init__(self, *a, **k):
>>> super(Int, self).__init__(self, *a, **k)
>>> 
>>> >>> i = Int(1)
>>> >>> i
>>> 
>>> 1
>>> 
>>> Regards,
>>> Tor Erik

>CM> While I'm not *totally* sure what you are asking, you can access the
>CM> first parameter you passed in __init__ via args[0].

What args do you mean?
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org


From koara at atlas.cz  Wed Oct  3 15:52:53 2007
From: koara at atlas.cz (koara)
Date: Wed, 03 Oct 2007 12:52:53 -0700
Subject: enumerate overflow
In-Reply-To: <1191432123.619871.226360@g4g2000hsf.googlegroups.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<5mheq7Fd78r2U2@mid.uni-berlin.de>
	<mailman.1448.1191418743.2658.python-list@python.org>
	<7xmyv0nn7f.fsf@ruckus.brouhaha.com>
	<1191432123.619871.226360@g4g2000hsf.googlegroups.com>
Message-ID: <1191441173.674805.162960@y42g2000hsy.googlegroups.com>

On Oct 3, 7:22 pm, Raymond Hettinger <pyt... at rcn.com> wrote:
> In Py2.6, I will mostly likely put in an automatic promotion to long
> for both enumerate() and count().  It took a while to figure-out how
> to do this without killing the performance for normal cases (ones used
> in real programs, not examples contrived to say, "omg, see what
> *could* happen").
>
> Raymond


Thanks everybody for the reply and suggestions, I'm glad to see the
issues's already been discovered/discussed/almostresolved.

By the way, I do not consider my programs in any way 'unreal'.



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct 19 06:13:37 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 19 Oct 2007 12:13:37 +0200
Subject: Convert string to command..
In-Reply-To: <1192738176.900461.12470@e9g2000prf.googlegroups.com>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
	<47179a04$0$16398$426a74cc@news.free.fr>
	<1192738176.900461.12470@e9g2000prf.googlegroups.com>
Message-ID: <47188351$0$28571$426a74cc@news.free.fr>

sjdevnull at yahoo.com a ?crit :
> On Oct 18, 1:38 pm, Bruno Desthuilliers <bruno.
> 42.desthuilli... at wtf.websiteburo.oops.com> wrote:
>> Abandoned a ?crit :
>> (snip)
>>
>>> I'm very confused :(
>>> I try to explain main problem...
>>> I have a table like this:
>>> id-1 | id-2 | value
>>> 23     24       34
>>> 56     68       66
>>> 56     98       32455
>>> 55     62       655
>>> 56     28       123
>>> .... ( 3 millions elements)
>>> I select where id=56 and 100.000 rows are selecting but this took 2
>>> second. (very big for my project)
>> Not to bad in the absolute.
>>
>>> I try cache to speed up this select operation..
>>> And create a cache table:
>>> id-1 | all
>>> 56    {68:66, 98:32455, 62:655}
>> I really doubt this is the right way to go.
>>
>>> When i select where id 56 i select 1 row and its took 0.09 second but
>>> i must convert text to dictionary..
>>> Have you got any idea what can i do this conver operation ?
>> Other alread answered
>>
>>> Have you got any idea what can i do cache for this table ?
>> Depends on your RDBMS. And as far as I'm concerned, I'd start by trying
>> to find out how to optimize this query within the RDBMS - good ones are
>> usually highly optimized softwares with provision for quite a lot of
>> performance tuning.
> 
> Just the overhead of the query is a killer compared to a dictionary
> lookup in Python, even if all you're doing is selecting an integer
> from a 1-row, 1-column table.

Indeed. But then why use a RDBMS at all ? Please understand that I'm not 
saying that a RDBMS will beat a plain dict lookup not that a RDBMS will 
solve world's problem, but that storing pickled Python's dicts into a 
RDBMS is certainly not the best thing to do. It will *still* have the db 
connection overhead anyway, and will be a nightmare to maintain in sync 
with the real state of the db. Which is why I suggest *first* looking 
for RDBMS-side tuning and optimization - which may include third-part 
cache systems FWIW.


From jeremit0 at gmail.com  Thu Oct 11 10:42:25 2007
From: jeremit0 at gmail.com (jeremito)
Date: Thu, 11 Oct 2007 07:42:25 -0700
Subject: Python module for making Quicktime or mpeg movies from images
Message-ID: <1192113745.291983.292950@50g2000hsm.googlegroups.com>

My Python script makes a bunch of images that I want to use as frames
in a movie.  I've tried searching for a module that will take these
images and put them together in a Quicktime or mpeg movie, but haven't
found anything.  My images are currently pdfs, but I could make them
into just about anything if needed.

Is there a module, or example of how to do this?
Thanks,
Jeremy



From carsten at uniqsys.com  Mon Oct  1 10:12:04 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 10:12:04 -0400
Subject: Select as dictionary...
In-Reply-To: <20071001135746.GA12995@sdf.lonestar.org>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<20071001135746.GA12995@sdf.lonestar.org>
Message-ID: <1191247924.3393.7.camel@dot.uniqsys.com>

On Mon, 2007-10-01 at 09:57 -0400, J. Clifford Dyer wrote:
> On Mon, Oct 01, 2007 at 06:32:07AM -0700, Besturk.Net Admin wrote regarding Select as dictionary...:
> > 
> > aia.execute("SELECT id, w from list")
> > links=aia.fetchall()
> > print links
> > 
> > and result
> > [(1, 5), (2,5).......] (2 million result)
> > 
> > I want to see this result directly as a dictionary:
> > 
> > {1: 5, 2: 5 .....}
> > 
> > How do i select in this format ?
> > 
> Try this:
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> linkdict = dict()
> for k,v in links:
>     linkdict[k] = v
> print linkdict

Improvement 1: Use the fact that dict can be initialized from a sequence
of key/value pairs:

aia.execute("SELECT id, w from list")
linkdict = dict(aia.fetchall())

Improvement 2: Use an iterator instead of reading all rows into memory:

aia.execute("SELECT id, w from list")
linkdict = dict(iter(aia.fetchone,None))

-- 
Carsten Haese
http://informixdb.sourceforge.net




From http  Thu Oct 11 03:21:59 2007
From: http (Paul Rubin)
Date: 11 Oct 2007 00:21:59 -0700
Subject: Keeping track of subclasses and instances?
References: <fejpo9$vm$1@news1.carnet.hr>
	<1192077344.171261.229360@22g2000hsm.googlegroups.com>
	<13grcdjsmburc72@corp.supernews.com>
Message-ID: <7xy7eanmjs.fsf@ruckus.brouhaha.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
> Is there a problem with writing C like this?
> class C(object):
>     def __init__(self):
>         logging.warn('Allocating resource ...')
>         self.__log = logging.warn

> It works for me. Have I missed something?

I thought the OP wanted to the program to notice when subclasses were
created, not just instances of them.  As Andreas Kraemer described,
you can do that with a metaclass.


From besturk at gmail.com  Sat Oct 20 11:24:07 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 20 Oct 2007 08:24:07 -0700
Subject: How can i store pickle dumps data ?
In-Reply-To: <5nuhs1Fk172sU1@mid.uni-berlin.de>
References: <1192869918.043569.223280@v23g2000prn.googlegroups.com>
	<5nuhs1Fk172sU1@mid.uni-berlin.de>
Message-ID: <1192893847.253192.65610@e9g2000prf.googlegroups.com>

On Oct 20, 5:32 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Abandoned schrieb:
>
>
>
>
>
> > Hi..
> > I have some dictionary as {2:3, 4:6, 5:7.........}
> > I want to pickle to these dictionary and save to database but i
> > couldn't..
>
> > My code for adding..
> > a=eval(dict)
> > a=pickle.dumps(a, -1)
> > cursor2.execute("INSERT INTO cache VALUES ('%s', %s)", (x[0],a))
> > conn2.commit()
>
> > i try in UTF-8 postresql database (data type BYTEA) and it gives me
> > this error:
> >> psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
> >> 0x80
> >> HINT:  This error can also happen if the byte sequence does not match
> >> the encoding expected by the server, which is controlled by
> >> "client_encoding".
>
> > i try in LATIN5 postgresql database (data type BYTEA) and it add first
>
> http://mail.python.org/pipermail/python-list/2004-September/280867.html
>
> Diez- Hide quoted text -
>
> - Show quoted text -

Yes this is wonderfull.
I am very happy thank you very much Diez.



From mail at timgolden.me.uk  Wed Oct 17 05:06:51 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Wed, 17 Oct 2007 10:06:51 +0100
Subject: Capturing OutputDebugString information in python
In-Reply-To: <1192566889.524862.167030@k35g2000prh.googlegroups.com>
References: <1192566889.524862.167030@k35g2000prh.googlegroups.com>
Message-ID: <4715D0AB.5010208@timgolden.me.uk>

danbrotherston wrote:
> I am trying to get the output from the win32 platform command
> OutputDebugString.  I have used the following C++ code as a
> guideline:
> 
> http://groups.google.com/group/microsoft.public.vc.utilities/browse_frm/thread/1434418cb968d053/1a3c957675242c7e?lnk=st&q=DBWIN_BUFFER&rnum=3#1a3c957675242c7e
> 
> And I have been able to translate most things into python, but I have
> been unable to get it to work.  I use the pywin extensions to call
> CreateEvent and create the required events.  But when I wait on the
> event using the WaitOnSingleEvent call, it hangs indefinitely.

Well, unhelpfully, I can't get it to work, either! I used the code below,
so you might compare with yours to see if we're doing the same thing,
but I can't see any obvious problems. This page which you may have seen:

   http://www.unixwiz.net/techtips/outputdebugstring.html

is useful, but the security problem they identify with the mutex
doesn't seem to apply when I'm a local admin and my two processes
are run on my desktop.

I did have a dig inside the mmapmodule.c code (for the second time
in a month!) and a few differences do emerge from the posted code:

- The python code uses a NULL security attribute, which should mean:
full access to everyone.
- The python code assumes an access of write means: create the file
mapping for PAGE_READWRITE and map it for WRITE, while the posted
code maps for READ only.

Neither of these seems terribly significant, but who knows? The
problem of course is that the OutputDebugString function is designed
to fail silently, so you've no idea which part of your debugger is
causing it to fail -- or something else altogether.

I've scanned (very quickly) the MS groups on Google and I can't see
anything helpful. Hopefully someone else on this or on the win32
list has more experience & expertise than I do here. (Which wouldn't
be hard!)

TJG

<code>
import sys
import mmap

import win32security
import win32event

def main (args):
   sd = win32security.SECURITY_DESCRIPTOR ()
   dacl = win32security.ACL ()
   sd.SetSecurityDescriptorDacl (1, dacl, 0)
   sa = win32security.SECURITY_ATTRIBUTES ()
   sa.SECURITY_DESCRIPTOR = sd

   buffer_ready = win32event.CreateEvent (sa, 0, 0, "DBWIN_BUFFER_READY")
   data_ready = win32event.CreateEvent (sa, 0, 0, "DBWIN_DATA_READY")
   buffer = mmap.mmap (0, 4096, "DBWIN_BUFFER", mmap.ACCESS_READ)

   win32event.SetEvent (buffer_ready)

   while win32event.WaitForSingleObject (data_ready, 1000) == win32event.WAIT_TIMEOUT:
     pass

if __name__ == '__main__':
   main (sys.argv[1:])

</code>


From byte8bits at gmail.com  Wed Oct 10 17:03:41 2007
From: byte8bits at gmail.com (brad)
Date: Wed, 10 Oct 2007 17:03:41 -0400
Subject: I'm starting to think like a Pythonista
In-Reply-To: <5n4sqoFg4bs3U1@mid.individual.net>
References: <fejah0$lkk$1@solaris.cc.vt.edu>
	<5n4sqoFg4bs3U1@mid.individual.net>
Message-ID: <fejeni$qte$2@solaris.cc.vt.edu>

Bjoern Schliessmann wrote:
> brad wrote:
>> low_odds = [1,3,5,7,9]
>> # make a list containing 10 - 98 evens only
>> big_evens =  big_evens = [x for x in list(xrange(99)) if x % 2 ==
>> 0 and x >8]
> 
> Why use xrange if you convert it to a full list in place? No
> advantage there.

What is the dis-advantage of using xrange over range in this circumstance?


From mail at microcorp.co.za  Fri Oct 19 03:06:22 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 19 Oct 2007 09:06:22 +0200
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com><1192658316.048082.212190@v23g2000prn.googlegroups.com><1192659838.773066.160060@i38g2000prf.googlegroups.com><1192663840.916445.207420@k35g2000prh.googlegroups.com>
	<1192729918.586875.187520@e34g2000pro.googlegroups.com>
Message-ID: <018601c81223$9bee4c20$03000080@hendrik>

"Arnaud Delobelle" <arno....email.com> wrote:

> In binary 2 is 10.  When you multiply by 10, you shift all your digits
> left by 1 place.
> When you multiply by 10**n (which is 1 followed by n zeroes), you
> shift all your digits left by n places.

I read somewhere:

Only 1 person in 1000 understands binary.
The other 111 don't have a clue.

- Hendrik



From velman at cox.net  Sat Oct 13 19:21:42 2007
From: velman at cox.net (John Velman)
Date: Sat, 13 Oct 2007 16:21:42 -0700
Subject: Python on imac
Message-ID: <8ocQi.24253$054.21605@newsfe14.phx>

I'm considering moving from Linux to imac.   I've recently returned to
Python (was never very expert) to develop a small gui application.  At
present I plan to use PyGTK with Pango and Cairo.

What surprises may I be in for :-)

(Currently using slackware 11.0 on an old (8 years) slow (400mhz) machine.)

Thanks,

John Velman


From chowroc.z+l at gmail.com  Thu Oct 18 12:51:47 2007
From: chowroc.z+l at gmail.com (Roc Zhou)
Date: Fri, 19 Oct 2007 00:51:47 +0800
Subject: Fwd: Pyinotify : which user ?
In-Reply-To: <7847e5160710180948k6a6558f9xa7a54918b5633a8c@mail.gmail.com>
References: <47178318$0$21145$7a628cd7@news.club-internet.fr>
	<7847e5160710180948k6a6558f9xa7a54918b5633a8c@mail.gmail.com>
Message-ID: <7847e5160710180951o29cc4fd9sbb1e1dd8dce72f38@mail.gmail.com>

---------- Forwarded message ----------
From: Roc Zhou <chowroc.z+l at gmail.com>
Date: Oct 19, 2007 12:48 AM
Subject: Re: Pyinotify : which user ?
To: S?bastien Weber <valereG at hotmail.fr>

The command lsof or fuser can report who is using the file, maybe you can
have a look at their source code, but they must be C code.

But since inotify is not absolute realtime, once the file is modified,
lsof or fuser can not return the right result.

I think it's better to use a good authentication method if you want to
use inotify this way, then you know when a user logged in and what
actions or commands he/she invoked, and record the inotify events with
timestamps. And a more careful permission strategy may be more sensible.

Or you can make use of SVN?

I'm also doing a project that makes use of pyinotify, one function of it
can be a "REPORT" as an IDS(Intrusion Detection System), and I reaches
several limitations of pyinotify, which you may be interested in.

The project is at:
http://sourceforge.net/projects/crablfs

And the document is at:
http://crablfs.sourceforge.net/#ru_data_man

Thanks.

On 18 Oct 2007 16:00:24 GMT, S?bastien Weber <valereG at hotmail.fr> wrote:
>
> Hello,
>
> I'm actually writing an application with pyinotify which watchs a
> directory.
> Pyinotify lets me know the events (access, modify, suppression, etc.) on
> and in the directory, but not the users who are responsable of them.
> Does someone know a library which could give me that information (who's
> using a file) ?
>
> Thank's in advance,
>
> SW.
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071019/f150bec0/attachment.html>

From frank at chagford.com  Sat Oct 27 02:16:35 2007
From: frank at chagford.com (Frank Millman)
Date: Fri, 26 Oct 2007 23:16:35 -0700
Subject: simple question on dictionary usage
In-Reply-To: <1193464958.063849.106890@z9g2000hsf.googlegroups.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<1193464703.330534.279080@22g2000hsm.googlegroups.com>
	<1193464958.063849.106890@z9g2000hsf.googlegroups.com>
Message-ID: <1193465795.788600.126180@50g2000hsm.googlegroups.com>

On Oct 27, 8:02 am, Frank Millman <fr... at chagford.com> wrote:
> > This should work -
>
> > egt = dict([i for i in d.items() if i[0].startswith('E')])
>
> Of course I meant record.items(), not d.items(). Sorry.
>
> Frank

On reflection, although my solution is a bit shorter than some others,
it may not be as efficient, as it retrieves the key and value for
*every* entry in 'record' before testing whether the key begins with
'E'.

If the dictionary is large, this may be a consideration.

Frank



From silfheed at gmail.com  Fri Oct  5 16:15:26 2007
From: silfheed at gmail.com (Silfheed)
Date: Fri, 05 Oct 2007 20:15:26 -0000
Subject: PYTHONPATH, opensuse10.2, gtk not working
In-Reply-To: <1191614669.313525.292300@w3g2000hsg.googlegroups.com>
References: <1191536138.690185.59080@22g2000hsm.googlegroups.com>
	<mailman.1551.1191551988.2658.python-list@python.org>
	<1191555060.248671.298340@50g2000hsm.googlegroups.com>
	<1191614669.313525.292300@w3g2000hsg.googlegroups.com>
Message-ID: <1191615326.914446.19540@w3g2000hsg.googlegroups.com>

On Oct 5, 1:04 pm, Silfheed <silfh... at gmail.com> wrote:
> On Oct 4, 8:31 pm, Silfheed <silfh... at gmail.com> wrote:
>
>
>
> > On Oct 4, 7:39 pm, Steve Holden <st... at holdenweb.com> wrote:
>
> > > Silfheed wrote:
> > > > Heyas
>
> > > > So I'm trying to do two things, install a little gnome taskbar applet
> > > > (timer-applet) that was written in python and experiment with writing
> > > > python gtk apps.  I've installed (through yast) gtk, gtk2, gtk2-devel,
> > > > python-gtk, python-gtk-devl, python-gtk-doc but I still cant get
> > > > python to import gtk.  I set PYTHONPATH = /usr/lib/python2.5/site-
> > > > packages/ and that got importing pygtk to work, but the little app I
> > > > downloaded wants to import gtk and I just cant figure out what I'm
> > > > supposed to set PYTHONPATH to in order to get `import gtk` to work.
> > > > Anyone know what I'm doing wrong or missing?
>
> > > > Thanks
>
> > > set PYTHONPATH to /usr/lib/python2.5/lib/site-packages:gtk-root-dir
>
> > > By the way, do you really think that it's necessary to put site-packages
> > > on the path? You might find it's already on there as Python starts up.
>
> > > You can tell by printing sys.path from Python.
>
> > Yes, it actually requires adding the site-packages to the PYTHONPATH
> > to get pygtk to work.  So far I've managed to get gtk to give a
> > different error when I added the site-packages/gtk-2.0/ directory (the
> > only gtk-like thing in the site-packages) to the PYTHONPATH
> > `ImportError: gobject/_gobject.so: undefined symbol:
> > PyUnicodeUCS4_FromObject`.   I'll have to check the path when I get
> > home to see what it actually has within it and work from there.
>
> > Thanks.
>
> So after checking sys.path and snooping around a bit more, it turns
> out that I have two python site-package directories... one in /usr/lib
> and one in /usr/local/lib.. One is automatically stuck into sys.path
> (but allowed root access only) while the other is not.
>
> I dunno why this is, but is there a way to get python to see both of
> these automatically (without PYTHONPATH?)  Not that this solves my
> problem since after changing the permissions to world readable on the
> sys.path listed /usr/lib/python2.5/site-packages, it still wont let me
> import gtk.  This is all after installing everything with yast (which
> says that I have gtk)..

Well.. I suppose a logical explanation would be two different installs
of python.. sorry for the noise.



From kw at codebykevin.com  Tue Oct 16 13:59:34 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Tue, 16 Oct 2007 13:59:34 -0400
Subject: documentation for tk.call interface
In-Reply-To: <1192555344.720191.100630@v29g2000prd.googlegroups.com>
References: <1192555344.720191.100630@v29g2000prd.googlegroups.com>
Message-ID: <4714FC06.20906@codebykevin.com>

dbr517 at gmail.com wrote:
> I'm using Python + Tkinter for a small gui . . . there are LOTS of
> places inside Tkinter with code like this:
> 
>         self.tk.call('tkwait', 'variable', name)
> 
> (this particular one is from the IntVar class).
> 
> I've searched the Tkinter docs with no success; can someone point me
> at the documentation for tk.call?

I'm not sure where the documentation is, but tk.call is a raw Tcl 
command being invoked from Python without being wrapped by Python 
classes/methods. For instance:

self.tk.call('package', 'require', 'tile')

is equivalent to this call in a Tcl script:

package require tile

Generally I use tk.call if I have to get "close to the metal" in dealing 
with Tk. Tkinter does a good job of abstracting this, but, as you no 
doubt know, Tkinter.py itself is full of 'tk.call' code, i.e.:

     def wait_visibility(self, window=None):
         """Wait until the visibility of a WIDGET changes
         (e.g. it appears).

         If no parameter is given self is used."""
         if window is None:
             window = self
         self.tk.call('tkwait', 'visibility', window._w)
     def setvar(self, name='PY_VAR', value='1'):
         """Set Tcl variable NAME to VALUE."""
         self.tk.setvar(name, value)
     def getvar(self, name='PY_VAR'):
         """Return value of Tcl variable NAME."""
         return self.tk.getvar(name)

and so on. There's simply no other way to get at the guts of Tk without 
using tk.call at some level.

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From michele.simionato at gmail.com  Sun Oct  7 12:24:04 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sun, 07 Oct 2007 16:24:04 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191771096.541915.247650@k79g2000hse.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191771096.541915.247650@k79g2000hse.googlegroups.com>
Message-ID: <1191774244.572607.259510@o3g2000hsb.googlegroups.com>

On Oct 7, 11:31 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
> IMO this is not as much a framework comparison rather than an
> evaluation of the individual components that make up Pylons.

More in general let's say that I am interested in the evaluation
of WSGI-compatible components.

> The framework is the sum of all its parts. Programmers should not need
> to know that that a package named Beaker is used for sessions, Routes
> for url mapping, PasteDeploy for whatever. This is the weakness of all
> glue-type frameworks i.e. TG and Pylons. It makes them look like they
> are duct-taped together.

Here we disagree: I think that a programmer should know what he
is using. Moreover I think that composability is good since you
can understand the components one at the time and replace one
component with another according to your needs. OTOH, it is
true that duct-taped framework have some weak points, I am
the first to recognize that. But I also think the issues
will be less and less relevant as time goes by and the
culture of composable frameworks will become more widespread
in the community.

> The more important question are whether the sessions actually work
> properly: i.e does session data persist through a server restart?
> Where is the session data stored: in memory, files, database and so
> on.

Of course Beaker has all these features and I have no reasons
to believe they will not work.

> The choice of templating language should be a non issue. Any half
> decent framework should allow you to use any other templating engine
> with ease.
> ... even python as you seem to prefer
>

Yes, the choice of templating language is a non-issue. Maybe
I should have removed my considerations on the subject in
my essay, just to avoid the bikeshed effect.

           Michele Simionato



From jgardner.jonathangardner.net at gmail.com  Fri Oct 26 16:32:03 2007
From: jgardner.jonathangardner.net at gmail.com (Jonathan Gardner)
Date: Fri, 26 Oct 2007 20:32:03 -0000
Subject: how to/help installing impure packages
In-Reply-To: <1193420159.513950.177000@y27g2000pre.googlegroups.com>
References: <1193420159.513950.177000@y27g2000pre.googlegroups.com>
Message-ID: <1193430723.902160.264880@i38g2000prf.googlegroups.com>

On Oct 26, 10:35 am, owl <john_now... at carleton.ca> wrote:
> I love easy_install.
>
> I love watching it search and complete.
> It's when it doesn't complete that causes me grief.
> I don't program a lot these days and am relatively new to python but I
> often wind up installing packages on both unix and windows machines
> and often the 'build' part of the install fails with not being able to
> find the compiler or compile problems.
>
> If there are any articles/pointers that talk about this, i.e. how to
> troubleshoot, I'd love to know.
>
> If I was writing such an article I'd start with:
> - how easy_install uses distutils (even this is an assumption on my
> part)
> - where it looks in the env. for stuff on both unix/linux/windows
> - what files to tweak to help it find stuff if your env. is different.
> - i.e. can I config some file to have packages not try and compile but
> use pure python if possible?
> - i.e. w/o speedups
> - how to work around problems such as easy_install failing because a
> site is down
> - i.e. how to manually download, 'unpack' & 'build'
> - since packages fail to build, how to set things up to download &
> keep things around when they fail so you can tinker with it until you
> get it working!

I would enjoy seeing an article like this as well.

However, in the meantime, feel free to report your error messages to
the authors of the modules in question or even here. I am sure someone
would be willing to give some advice. At the very least, they need to
know that all is not perfect out in user-land.



From ldo at geek-central.gen.new_zealand  Fri Oct  5 01:04:21 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 18:04:21 +1300
Subject: Combine two dictionary...
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
	<mailman.1357.1191260483.2658.python-list@python.org>
	<1191261690.056215.179920@57g2000hsv.googlegroups.com>
Message-ID: <fe4gkl$f3p$1@lust.ihug.co.nz>

In message <1191261690.056215.179920 at 57g2000hsv.googlegroups.com>, Abandoned
wrote:

> I want to total score..
> For example
>> > dict1={1: 4,  3: 5}... and 2 millions element
>> > dict2={3: 3,  8: 6}... and 3 millions element
> 
> result should be dict3={1:4, 3:8, 8:6}

Don't people like one-liners? :)

    dict((k, dict1.get(k, 0) + dict2.get(k, 0))
        for k in dict1.keys() + dict2.keys())


From akraemer at sbcglobal.net  Wed Oct 10 19:40:22 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Wed, 10 Oct 2007 23:40:22 -0000
Subject: storing meta data on dictionary keys
In-Reply-To: <mailman.9.1191989924.927.python-list@python.org>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
Message-ID: <1192059622.813393.14190@r29g2000hsg.googlegroups.com>

On Oct 9, 9:18 pm, Erik Jones <e... at myemma.com> wrote:
> So, do you not keep references to your nodes anywhere but the actual
> graph dict?  I kind of agree with Chris here in that two dicts will
> work. One for the nodes, indexed by their strings.

Yes, I guess that's exactly what I want. To keep things as simple as
possible and not having to keep track of another dictionary. If you
look at class Dict(dict) in the OP, simulating the behavior I'd liked
to have seen for built-in dict itself, the second dictionary is
actually hidden so I don't have to bother with it any more ...

> And, to use the
> actual nodes as keys simply override __hash__ in your Node object
> classes.

The trivial "class Str(str): pass" in the OP (that already inherits
the correct __hash__ and
__eq__) serves the same purpose as your Node(object) below, except
that self.name is stored
in the str built-in, and there is no flashy initializer.

>
>  >>> class Node(object):
> ...     def __init__(self, name, **kwargs):
> ...         self.name = name
> ...         for k, v in kwargs.items():
> ...             self.__dict__[k] = v
> ...
> ...     def __hash__(self):
> ...         return hash(self.name)
> ...
>  >>> nodes = {}
>  >>> graph = {}
>  >>>
>  >>> n = Node('foo')
>  >>> m = Node('blah', baz=5)
>  >>>
>  >>> nodes[n.name] = n
>  >>> nodes[m.name] = m
>  >>>
>  >>> for name, node in nodes.items():
> ...     graph[node] = "whatever for node %s" % name
> ...
>  >>> nodes{'blah': <__main__.Node object at 0x76c50>, 'foo':
> <__main__.Node object at 0x76d30>}
>  >>> graph{<__main__.Node object at 0x76c50>: 'whatever for node
> blah', <__main__.Node object at 0x76d30>: 'whatever for node foo'}
>  >>> graph[nodes['foo']]'whatever for node foo'

I still believe that it would be a nice-to-have, and probably only a
small effort to equip
the built-in dict with a get_key() method. The whole mechanism of
dictionary look-up in Python,
based on "duck typing", and only caring about the __hash__ and __eq__
methods supplied by
the key object, is constructed in a way that allows objects inserted
into the dictionary as keys
and objects used for look-up to be (non-trivially) distinct.
Therefore, it would actually be
nice to be able to retrieve keys from the dict in a direct way (other
than via .keys()).
The same may apply to sets and frozensets as well ...;-)



From duncan.booth at invalid.invalid  Mon Oct  1 08:51:12 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 1 Oct 2007 12:51:12 GMT
Subject: sorteddict [was a PEP proposal, but isn't anymore!]
References: <mailman.1332.1191241504.2658.python-list@python.org>
Message-ID: <Xns99BC8BF9F1899duncanbooth@127.0.0.1>

"Hamilton, William " <whamil1 at entergy.com> wrote:

>> From: thebjorn
>> What's stabledict? I'm assuming that ordereddict is a mapping that
>> maintains insertion order(?)
> 
> Yes, ordereddict is a dict that maintains insertion order.  Stabledict
> is probably a dict that maintains _an_ order, so that repr() and the
> like return the same value when used on dicts containing the same data.

Yes, that was what I was suggesting in an unclear manner: stabledict would 
be a dictionary which returned the same repr for the same contents no 
matter what order the elements were inserted.

>> In the Smalltalk collection hierarchy SortedCollection is a subclass
>> of OrderedCollection, which implies to me that it'd be better to add
>> an ordereddict first.
> 
> That depends entirely on how ordereddict and sorteddict function.  If
> they are similar there might be a benefit.  However, an ordereddict
> would probably be best implemented with an internal list of keys,
> whereas the consensus seems to be using a tree for sorteddict.  In this
> case, trying to build sorteddict from ordereddict is going to give you
> extra baggage and overhead for no benefit.
> 
Subclassing doesn't have to imply a common implementation, just a common 
interface.


From matthieu.brucher at gmail.com  Fri Oct 26 04:44:13 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Fri, 26 Oct 2007 10:44:13 +0200
Subject: Read Matlab files with Python and Numeric?
In-Reply-To: <AMPHORARapKT5IE4WXP00001151@amphora.quantal.quantal.com>
References: <AMPHORARapKT5IE4WXP00001151@amphora.quantal.quantal.com>
Message-ID: <e76aa17f0710260144q4fad5818ode722cffea8a507a@mail.gmail.com>

Scipy proposes such a module.

Matthieu

2007/10/25, QAM <qam at quantal.com>:
>
>  Hi Travis,
>
>
>
> Could you please send me the matlab reader you mentioned?
>
>
>
> Thanks,
>
>
>
> Frank
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
French PhD student
Website : http://miles.developpez.com/
Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071026/674e1edd/attachment.html>

From stutzman at skywagon.kjsl.com  Sat Oct 27 12:17:43 2007
From: stutzman at skywagon.kjsl.com (Frank Stutzman)
Date: Sat, 27 Oct 2007 16:17:43 +0000 (UTC)
Subject: simple question on dictionary usage
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<13i6hgrqjs22n7b@corp.supernews.com>
Message-ID: <ffvob7$1kac$1@stationair.kjsl.com>

Wow, what a great group!  Lots of useful and kind suggestions to what I was
sure was a fairly dumb question.  A few comments on some selected suggestions
(but I appreciate all of them)

Edward Kozlowski wrote:

> egt = {}
> for key in record:
>    if key.startswith('E'):
>        egt[key] = record[key]

I actually had come up with something like this, but thought it wasn't
quite as pythonish as it should be.  It is certainly much more readable
to a neophyte to python.
 
Bruno Desthuilliers wrote:

> egt = dict((k, v) for k, v in record.iteritems() if k.startswith('E'))

This is what I was looking for.  I thought I had seen something simular
to this in one of the tutorials I had read, but couldn't seem to find it.

Steven D'Aprano:

> eval("{" + reduce(lambda x,y: y+', '+x, [mo.group(1) for mo in __import__
> ('re').finditer(r"('E.*?'\s*:\s*'.*?'),?", str(record))], "") + "}")

Ah!  Now this is one solution I can get my teeth into.  If its not obvious,
I'm a recovering perl programmer.

Thanks to all
 

-- 
Frank Stutzman





From ihatespam at hotmail.com  Tue Oct  9 17:07:45 2007
From: ihatespam at hotmail.com (Just Another Victim of the Ambient Morality)
Date: Tue, 09 Oct 2007 21:07:45 GMT
Subject: Unexpected behaviour with HTMLParser...
Message-ID: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>

    HTMLParser is behaving in, what I find to be, strange ways and I would 
like to better understand what it is doing and why.

    First, it doesn't appear to translate HTML escape characters.  I don't 
know the actual terminology but things like &amp; don't get translated into 
& as one would like.  Furthermore, not only does HTMLParser not translate it 
properly, it seems to omit it altogether!  This prevents me from even doing 
the translation myself, so I can't even working around the issue.
    Why is it doing this?  Is there some mode I need to set?  Can anyone 
else duplicate this behaviour?  Is it a bug?

    Secondly, HTMLParser often calls handle_data() consecutively, without 
any calls to handle_starttag() in between.  I did not expect this.  In HTML, 
you either have text or you have tags.  Why split up my text into successive 
handle_data() calls?  This makes no sense to me.  At the very least, it does 
this in response to text with &amp; like escape sequences (or whatever 
they're called), so that it may successively avoid those translations.
    Again, why is it doing this?  Is there some mode I need to set?  Can 
anyone else duplicate this behaviour?  Is it a bug?

    These are serious problems for me and I would greatly appreciate a 
deeper understanding of these issues.
    Thank you...






From hniksic at xemacs.org  Thu Oct 18 12:30:00 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 18:30:00 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
Message-ID: <87tzoo1j3r.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> I select where id=56 and 100.000 rows are selecting but this took 2
> second. (very big for my project)
> I try cache to speed up this select operation..
> And create a cache table:
> id-1 | all
> 56    {68:66, 98:32455, 62:655}

If you use Python to create this cache table, then simply don't dump
it as a dictionary, but as a pickle:

id-1 | all
56     <some weird string produced by cPickle.dumps>

When you load it, convert the string to dict with cPickle.loads
instead of with eval.


From paul.hankin at gmail.com  Wed Oct 10 15:28:49 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 10 Oct 2007 19:28:49 -0000
Subject: Pythonic way for handling file errors
In-Reply-To: <1192041679.657266.320210@o80g2000hse.googlegroups.com>
References: <1192041679.657266.320210@o80g2000hse.googlegroups.com>
Message-ID: <1192044529.831420.86020@57g2000hsv.googlegroups.com>

On Oct 10, 7:41 pm, wink <w... at saville.com> wrote:
> I would like to know what would be considered the most
> Pythonic way of handling errors when dealing with files,
> solutions that seem reasonable using 2.5:

The best way to handle errors is to catch the exceptions that are
raised by the code that handles the error. Your examples push the
problem elsewhere: you're setting an error code which has to be tested
for. But perhaps your application needs to do this for some reason
(judging from your error codes, this is some sort of web script).

> ...
> try:
>    with open('afile', 'r') as f:
>        content = f.read()
>    error = 200
> except Exception:
>    error = 404

Of all your examples, this is the best. But the catch-all exception
handler is bad: it's better to catch just file io exceptions. Also, I
think it's better to put the OK case (error 200) in an else clause to
make it clearer that it's only set when no error occurs. It's also
better to use constants in place of magic numbers.

import httplib

try:
    with open('afile', 'r') as f:
        content = f.read()
except IOError:
    error = httplib.NOT_FOUND
else:
    error = httplib.OK

--
Paul Hankin



From elmakko at gmail.com  Mon Oct  1 01:52:32 2007
From: elmakko at gmail.com (makko)
Date: Mon, 01 Oct 2007 05:52:32 -0000
Subject: Balloon Taskbar Popup for Windows XP
In-Reply-To: <1191137085.480380.296610@w3g2000hsg.googlegroups.com>
References: <1191062421.610473.13070@19g2000hsx.googlegroups.com>
	<1191137085.480380.296610@w3g2000hsg.googlegroups.com>
Message-ID: <1191217952.072241.179890@k79g2000hse.googlegroups.com>

Thanks all.

regards,
Makko




From pythoncurious at gmail.com  Wed Oct 10 05:36:56 2007
From: pythoncurious at gmail.com (pythoncurious at gmail.com)
Date: Wed, 10 Oct 2007 09:36:56 -0000
Subject: Singleton
Message-ID: <1192009016.858568.58430@50g2000hsm.googlegroups.com>

Hi,

I've been trying to get some sort of singleton working in python, but
I struggle a bit and I thought I'd ask for advice.

The first approach was simply to use a module, and every variable in
it will be seen by all who import the module.
That works in some cases, but not if I have the following structure:

one/
  __init__.py
  mod1.py
  run.py
two/
  __init__.py
  mod2.py

run.py looks like this:
#!/usr/bin/env python
import mod1
print mod1.number
import two.mod2
print two.mod2.number

mod1.py looks like this:
import random
number=random.randint(0,100)

mod2.py looks like this
import one.mod1
number = one.mod1.number

PYTHONPATH is set to the directory containing the 'one' and 'two'
directories.

Now when I run the 'run.py', it will print two different numbers.
sys.modules tells me that 'mod1' is imported as both 'one.mod1' and
'mod1', which explains the result.

Looking at:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52558
I find a singleton class, but it has the same problem. If it's
imported in two different ways, I have not a singleton but a ...
'doubleton' or something.

It is possible to solve this by always importing with the complete
path like 'one.mod1', even when inside the 'one' directory, but that's
an error waiting to happen.

So how do people solve this? Is there an obvious way that I missed?

I'm thankful for any advice you might provide.



From ryan at ryankaskel.com  Wed Oct 17 09:30:00 2007
From: ryan at ryankaskel.com (ryan k)
Date: Wed, 17 Oct 2007 13:30:00 -0000
Subject: Displaying future times
In-Reply-To: <13hc1c25sm4snfa@corp.supernews.com>
References: <1192623606.048549.114600@y27g2000pre.googlegroups.com>
	<13hc1c25sm4snfa@corp.supernews.com>
Message-ID: <1192627800.564717.246280@i13g2000prf.googlegroups.com>

On Oct 17, 1:52 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Wed, 17 Oct 2007 12:20:06 +0000, ryan k wrote:
> > I have a schedule of times in the future that I want to display in a
> > timezone the user sets. There is a useful module
> >http://www.purecode.com/~tsatter/python/README.txt(at that URL) with a
> > function that takes seconds from the epoch and a time zone and returns
> > what is basically a datetime object.
>
> > My question is how to I display the seconds from the epoch for a
> > datetime object (which will be a datetime in the future) for the UTC
> > timezone?
>
> Is this a trick question? Won't the answer be "The same way you would for
> a datetime in the past"?
>
> To get the number of seconds from the epoch, see the function timegm() in
> the calendar module.
>
> --
> Steven.

Not a trick question at all... Cheers.



From dschruth at gmail.com  Mon Oct 22 21:19:51 2007
From: dschruth at gmail.com (David Michael Schruth,)
Date: Mon, 22 Oct 2007 18:19:51 -0700
Subject: Can't Write to PostGIS PostGreSQL database via psycopg2
Message-ID: <1193102391.608145.136960@k35g2000prh.googlegroups.com>

Hi,

I am sort of in a jam here.  I am using the PsycoPG2 library to read
data out of a windows XP based PostGIS / PostGreSQL database but I am
apparently unable to write (update or insert) even though I am able to
read (select)

I am using PsycoPG2 2.0.6 (psycopg2-2.0.6.win32-py2.5-pg8.2.4-
release.exe )
with Python 2.5 (python-2.5.msi)
and PostGres 8.2.5.-1   (postgresql-8.2.5-1.zip)
and PostGIS 8.2 (postgis-pg82-setup-1.3.1-1.exe)

I can use PGadminIII to paste the same SQL queries and execute just
fine, but when I try to execute them via python code like

import psycopg2
conn = psycopg2.connect("dbname='postgis' user='postgres'
host='localhost' password='12345'")
c=conn.cursor()
c.execute("""INSERT INTO thetable (name) VALUES ('asdf');""")
c.execute("""UPDATE thetable SET name = 'somename' WHERE id = 321;""")
print(c.statusmessage)
#returns "INSERT 0 1" and "UPDATE 0" respectively

It gives me very specialized table specific error messages if the
query is wrong, but when it's correct, it does nothing and doesn't
update.   The only way I can update is pasting the query into the
PgAdminIII query window.

This is a problem on two separate machines (XP and Windows 2003
server) with all of the above components installed by two different
people.

Any help on this would be greatly appreciated.

Thanks in advance,

Dave



From steve at REMOVE-THIS-cybersource.com.au  Tue Oct 23 12:07:32 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 23 Oct 2007 16:07:32 -0000
Subject: Hiding tracebacks from end-users
Message-ID: <13hs7247ncm67d@corp.supernews.com>

I'm writing a command-line application that is meant to be relatively 
user friendly to non-technical users.

(Some wags might like to say that "user friendly" and "command-line 
application" are, by definition, contradictory. I disagree.)

Consequently, I'd like to suppress Python's tracebacks if an error does 
occur, replacing it with a more friendly error message. I'm doing 
something like this:

try:
    setup()
    do_something_useful()
except KeyboardInterrupt:
    print >>sys.stderr, "User cancelled"
    sys.exit(2)
except Exception, e:
    if expert_mode:
        # experts get the full traceback with no hand-holding.
        raise
    else:
        # print a more friendly error message
        if isinstance(e, AssertionError):
            msg = "An unexpected program state occurred"
        elif isinstance(e, urllib2.HTTPError):
            msg = "An Internet error occurred"
        else:
            # catch-all for any other exception
            msg = "An error occurred"
        print>>sys.stderr, msg
        print>>sys.stderr, e
        sys.exit(1)
else:
    sys.exit(0)



Is this a good approach? Is there another way to suppress the traceback 
and just print the error message?


-- 
Steven.


From chris.monsanto at gmail.com  Fri Oct  5 10:47:04 2007
From: chris.monsanto at gmail.com (chris.monsanto at gmail.com)
Date: Fri, 05 Oct 2007 14:47:04 -0000
Subject: remove list elements..
In-Reply-To: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
References: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
Message-ID: <1191595624.946031.279190@k79g2000hse.googlegroups.com>

On Oct 5, 10:27 am, Abandoned <best... at gmail.com> wrote:
> Hi..
> I have a problem..
> list1=[11, 223, 334, 4223...] 1 million element
> list2=[22,223,4223,2355...] 500.000 element
>
> I want to difference list1 to list2 but order very importent..
>
> My result must be:
> list3=[11,334,...]
>
> I do this use FOR easly but the speed very imported for me. I want to
> the fastest method please help me.
>
> I'm sorry my bad english.
>
> King regards..

Research the "set" data type. :)



From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 27 09:12:29 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 27 Oct 2007 13:12:29 -0000
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
	<mailman.499.1193474381.13605.python-list@python.org>
Message-ID: <13i6e9timmvuu51@corp.supernews.com>

On Sat, 27 Oct 2007 10:24:41 +0200, Hendrik van Rooyen wrote:

> So 0.002625**200000 is a number so small that its about as close as you
> can practically get to bugger-all, as it is less than 10 ** -400000, and
> more than 10**-600000

If you read the rest of the thread, you'll see I give a much more 
accurate estimate. It's approaching 10**-520000.


> Now I have heard rumours that there are approximately 10**80 elementary
> particles in the universe, so this is much less than one of them, even
> if my rumour is grossly wrong.
> 
> A light year is of the order of 9.46*10**18 millimetres, and no human
> has ever been that far away from home.  Call it 10**19 for convenience. 
> So your number slices the last millimetre in a light year into more than
> 10**399981 parts.

Numbers like 10**520000 (the reciprocal of the product found) is a 
perfectly reasonable number if you're dealing with (say) permutations. 
Admittedly, even something of the complexity of Go only has about 10**150 
possible moves, but Go is simplicity itself compared to (say) Borges' 
Library of Babel or the set of all possible genomes.

It's not even what mathematicians call a "large number" -- it can be 
written using ordinary notation of powers. For large numbers that can't 
be written using ordinary notation, see here:

http://en.wikipedia.org/wiki/Large_number
http://www.scottaaronson.com/writings/bignumbers.html

For instance, Ackermann's Sequence starts off quite humbly:

2, 4, 27 ...

but the fourth item is 4**4**4**4 (which has 10,154 digits) and the fifth 
can't even be written out in ordinary mathematical notation.


Calculating numbers like 10**520000 or its reciprocal is also a very good 
exercise in programming. Anyone can write a program to multiply two 
floating point numbers together and get a moderately accurate answer:

product = X*Y # yawn

But multiplying 200,000 floating point numbers together and getting an 
accurate answer somewhere near 10**-520000 requires the programmer to 
actually think about what they're doing. You can't just say:

A,T,C,G = (0.35, 0.30, 0.25, 0.10)
product = map(operator.mul, [A*T*C*G]*200000)

and expect to get anywhere.

Despite my fear that this is a stupid attempt by the Original Poster's 
professor to quantify the old saw about evolution being impossible 
("...blah blah blah hurricane in a junk yard blah blah Concorde blah blah 
blah..."), I really like this homework question.



-- 
Steven.


From ihatespam at hotmail.com  Tue Oct  9 18:10:59 2007
From: ihatespam at hotmail.com (Just Another Victim of the Ambient Morality)
Date: Tue, 09 Oct 2007 22:10:59 GMT
Subject: Unexpected behaviour with HTMLParser...
References: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
	<5n2avjFfh6h8U1@mid.uni-berlin.de>
Message-ID: <S%SOi.92740$TR1.33185@fe06.news.easynews.com>


"Diez B. Roggisch" <deets at nospam.web.de> wrote in message 
news:5n2avjFfh6h8U1 at mid.uni-berlin.de...
> Just Another Victim of the Ambient Morality schrieb:
>>     HTMLParser is behaving in, what I find to be, strange ways and I 
>> would like to better understand what it is doing and why.
>>
>>     First, it doesn't appear to translate HTML escape characters.  I 
>> don't know the actual terminology but things like &amp; don't get 
>> translated into & as one would like.  Furthermore, not only does 
>> HTMLParser not translate it properly, it seems to omit it altogether! 
>> This prevents me from even doing the translation myself, so I can't even 
>> working around the issue.
>>     Why is it doing this?  Is there some mode I need to set?  Can anyone 
>> else duplicate this behaviour?  Is it a bug?
>
> Without code, that's hard to determine. But you are aware of e.g.
>
> handle_entityref(name)
> handle_charref(ref)
>
> ?

    Actually, I am not aware of these methods but I will certainly look into 
them!
    I was hoping that the issue would be known or simple before I commited 
to posting code, something that is, to my chagrin, not easily done with my 
news client...


>>     Secondly, HTMLParser often calls handle_data() consecutively, without 
>> any calls to handle_starttag() in between.  I did not expect this.  In 
>> HTML, you either have text or you have tags.  Why split up my text into 
>> successive handle_data() calls?  This makes no sense to me.  At the very 
>> least, it does this in response to text with &amp; like escape sequences 
>> (or whatever they're called), so that it may successively avoid those 
>> translations.
>
> That's the way XML/HTML is defined - there is no guarantee that you get 
> text as whole. If you must, you can collect the snippets yourself, and on 
> the next end-tag deliver them as whole.

    I think there's some miscommunication, here.
    You can't mean "That's the way XML/HTML is defined" because those format 
specifications say nothing about how the format must be parsed.  As far as I 
can tell, you either meant to say that that's the way HTMLParser is 
specified or you're referring to how text in XML/HTML can be broken up by 
tags, in which case I've already addressed that in my post.  I expected to 
see handle_starttag() calls in between calls to handle_data().
    Unless I'm missing something, it simply makes no sense to break up 
contiguous text into multiple handle_data() calls...


>>     Again, why is it doing this?  Is there some mode I need to set?  Can 
>> anyone else duplicate this behaviour?  Is it a bug?
>
> No. It's the way it is, because it would require buffering with unlimited 
> capacity to ensure this property.

    It depends on what you mean by "unlimited capacity."  Is it so bad to 
buffer with as much memory as you have? ...or, at least, have a setting for 
such operation?  Moreover, you know that you'll never have to buffer more 
than there is HTML, so you hardly need "unlimited capacity..."  For 
instance, I believe Xerces does this translation for you 'cause, really, why 
wouldn't you want it to?


>>     These are serious problems for me and I would greatly appreciate a 
>> deeper understanding of these issues.
>
> HTH, and read the docs.

    This does help, thank you.  I have obviously read the docs, since I can 
use HTMLParser enough to find this behaviour.  I don't find the docs to be 
very explanatory (perhaps I'm reading the wrong docs) and I think they 
assume you already know a lot about HTML and parsing, which may be necessary 
assumptions but are not necessarily true...






From steve at REMOVE-THIS-cybersource.com.au  Tue Oct 30 10:09:39 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Tue, 30 Oct 2007 14:09:39 -0000
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<87abq1mxqc.fsf@merkury.smsnet.pl> <fg5j5p$a3t$1@solaris.cc.vt.edu>
	<5onb6eFneqbaU4@mid.uni-berlin.de>
Message-ID: <13ieep3nspq3e5b@corp.supernews.com>

On Tue, 30 Oct 2007 00:11:58 +0000, Marc 'BlackJack' Rintsch wrote:

>>> And to answer the question. In OO programming generic functions are no
>>> less important than classes and objects.
>> 
>> Do they not take away from the OOness of the overall language and
>> introduce inconsistencies?
> 
> No not at all.  Why do you think so?

I disagree. I think they *do* take away from the overall Object-Oriented 
nature of the language, and that is A Very Good Thing Indeed.

OO is a tool, and like any tool, it has it's uses and misuses. Some 
things are best written as objects, some as imperative procedures, some 
as functions. As you say:

> There are things that are best expressed as functions.

Agreed. It is a *good thing* that Python doesn't try to be 100% 
functional, or 100% Object Oriented, or 100% procedural.

(Aside: I think it a shame that there is one major paradigm that Python 
doesn't have *any* support for at all: logic programming, like Prolog. I 
don't quite know what it is good for, but I'd like to find out!)


> Other allegedly more OO languages have them
> too, but you need to stuff them as static methods into classes or even
> uglier you see code like ``Spam().spammify(eggs)`` instead of a plain
> function call.


I'm reminded of a very famous proverb from the Kingdom of the Nouns:

For the lack of a nail,
    throw new HorseshoeNailNotFoundException("no nails!");

For the lack of a horseshoe,
    EquestrianDoctor.getLocalInstance().getHorseDispatcher().shoot();

For the lack of a horse,
    RidersGuild.getRiderNotificationSubscriberList().getBroadcaster().run(
      new BroadcastMessage(StableFactory.getNullHorseInstance()));

For the rest of the proverb, which is well worth reading, you'll have to 
see here:


http://steve-yegge.blogspot.com/2006/03/execution-in-kingdom-of-nouns.html



-- 
Steven.
(no, not that Steve in the URL)


From yuxi at gatech.edu  Wed Oct  3 18:53:07 2007
From: yuxi at gatech.edu (Yu-Xi Lim)
Date: Wed, 03 Oct 2007 18:53:07 -0400
Subject: Howto Launch a windows application ?
In-Reply-To: <mailman.1484.1191447580.2658.python-list@python.org>
References: <mailman.1484.1191447580.2658.python-list@python.org>
Message-ID: <fe16gk$l0t$1@news-int.gatech.edu>

stef mientki wrote:
> cmd =[]
> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
> cmd.append ( '-long-start' )
> cmd.append ( '-d')
> cmd.append ( '-clear' )
> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
> cmd.append ( 
> 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )

Your problem is probably the last line there with the '>'. That's an 
output redirection that is done not by jalv2_3.exe but by the command 
shell. That's why it works only with the batch file (which is 
interpreted by the command shell.

Using a batch file is probably easiest for this. But I'm guessing you 
probably want to change the command line arguments passed to the program 
that's why you prefer to build the command line manually.

In that case, there are a few solutions:
1) Generate the batch file programmatically.
2) Use cmd.exe /C (assuming you're on Windows XP). So your program would 
be something like:
cmd.append('cmd.exe')
cmd.append('/C')
cmd.append('"D:\\PIC-tools\\JALxxx\\jalv2_3.exe -long-start -d -clear 
-sD:\\PIC-tools\\JAL\\libs2 
d:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal 
 >d:\\data_actueel\\d7_test_browser\\temp.log"')
(or something like that)
3) Do the redirection yourself. Remove the line:
  cmd.append ('>d:\\data_actueel\\d7_test_browser\\temp.log' )
and instead read the results directly from the Popen.stdout. You can 
then write the output to a file if you want.


From kasimmominov at gmail.com  Wed Oct 10 20:19:36 2007
From: kasimmominov at gmail.com (kasim)
Date: Thu, 11 Oct 2007 00:19:36 -0000
Subject: hi every one
Message-ID: <1192061976.687169.298700@o3g2000hsb.googlegroups.com>

www.agloco.com/r/BBFR6434

http://www.yuwie.com/yuwie.asp?r=102001

Dear ______,

I recently joined AGLOCO because of a friend recommended it to me. I
am now promoting it to you because I like the idea and I want you to
share in what I think will be an exciting new Internet concept.

AGLOCO's story is simple:

Do you realize how valuable you are? Advertisers, search providers and
online retailers are paying billions to reach you while you surf.  How
much of that money are you making? NONE!

AGLOCO thinks you deserve a piece of the action.

AGLOCO collects money from those companies on behalf of its members.
(For example, Google currently pays AOL 10 cents for every Google
search by an AOL user. And Google still has enough profit to pay $1.6
billion dollars for YouTube, an 18-month old site full of content that
YouTube's users did not get paid for!

AGLOCO will work to get its Members their share of this and more.

AGLOCO is building a new form of online community that they call an
Economic Network. They are not only paying Members their fair share,
but they're building a community that will generate the kind of
fortune that YouTube made. But instead of that wealth making only a
few people rich, the entire community will get its share.

What's the catch? No catch - no spyware, no pop-ups and no spam -
membership and software are free and AGLOCO is 100% member owned.
Privacy is a core value and AGLOCO never sells or rents member
information.

So do both of us a favor: Sign up for AGLOCO right now! If you use
this link to sign up, I automatically get credit for referring you and
helping to build AGLOCO. http://www.agloco.com/r/BBFR2592

Agloco is the re-birth of AllAdvantage, which paid out over
$100,000,000 to its members.

* Agloco costs you nothing. It's free. And it always will be.

* Agloco's Viewbar shows ads and lets you search the Web. Advertisers
and search engines pay Agloco when you do that, and Agloco then pays
you.

* Agloco pays you by the hour to have that Viewbar open on your
desktop.

* Agloco pays you by the hour to have your friends have their Viewbar
open.

* Once you start using the Viewbar, you'll get a check every month in
the mail.

* Once you sign up, you'll get your own referral URL that your friends
can use to sign up.

* Every 5 people that you refer to Agloco will double your income.


Please  follow this link and create own membership by this link



From besturk at gmail.com  Sun Oct  7 12:02:09 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 07 Oct 2007 09:02:09 -0700
Subject: Pil image module, "mode" bug..
In-Reply-To: <pan.2007.10.07.13.47.31.978730@vscht.cz>
References: <1191762186.617411.309700@g4g2000hsf.googlegroups.com>
	<pan.2007.10.07.13.47.31.978730@vscht.cz>
Message-ID: <1191772929.299902.87760@g4g2000hsf.googlegroups.com>

On Oct 7, 4:47 pm, Michal Bozon <boz... at vscht.cz> wrote:
> On Sun, 07 Oct 2007 06:03:06 -0700, Abandoned wrote:
> > Hi..
> > I find the picture color with:
> > im=Image.open("/%s" %name)
> > color=im.mode   #p=black & beyaz rgb=color L=grey
>
> > This usually work true but in these pictures:
> >http://malatya.meb.gov.tr/images/alt/ilsis_logo.gif
> >http://malatya.meb.gov.tr/images/meb.gif
>
> > Say me P (black&white) but these pictures are color..
>
> > What is the reason of this ?
>
> > I'm sorry my bad english
>
> P does mean palette, black&white is a special case of palette, with two
> colors.

How can i understand the picture color ? (black &white or color or
grey)



From jonvspython at gmail.com  Mon Oct 22 11:23:54 2007
From: jonvspython at gmail.com (jon vspython)
Date: Mon, 22 Oct 2007 17:23:54 +0200
Subject: Get the instance name from a list by Reflection
In-Reply-To: <z8WdndtGn4VqMoHanZ2dnUVZ_j-dnZ2d@comcast.com>
References: <mailman.265.1192911361.13605.python-list@python.org>
	<z8WdndtGn4VqMoHanZ2dnUVZ_j-dnZ2d@comcast.com>
Message-ID: <4d070c130710220823g68d96b38q168bf7ad88612942@mail.gmail.com>

May be, you could check against globals() dictionary looking for matching
id()'s:

def find_name(identifier):
     for k,v in globals().items():
             if id(v) == id(identifier):
                     return k
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071022/b2960682/attachment.html>

From bdesth.quelquechose at free.quelquepart.fr  Fri Oct 19 16:27:25 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 19 Oct 2007 22:27:25 +0200
Subject: documenting excepetions in Python
In-Reply-To: <1192807949.182072.69370@y27g2000pre.googlegroups.com>
References: <1192807949.182072.69370@y27g2000pre.googlegroups.com>
Message-ID: <47191362$0$569$426a34cc@news.free.fr>

dale_bertrand at yahoo.com a ?crit :
> In python, how do I know what exceptions a method

s/method/callable/

A method is only a thin wrapper around a function, and functions are 
just one kind of callable object (classes are another, and you can 
define your own...)

> could raise?

Practically speaking, you can't. Since an unhandled exception bubbles up 
the call stack, there's no reliable way to know what exception could 
happen when calling a function. Now there are quite a lot of 
'exceptions' you can expect in some situations - like IOError when 
dealing with files, etc.

>  Do I
> need to look at the source?

Would be impractical. Trying to spot each and every exception that could 
happen in a real-world call stack is a waste of time IMHO. Just deal 
with the ones that:
1/ could obviously happen here (like : a missing key in a dict, a 
non-(existing|readable|writable) file, etc,
2/ you can handle at this level

Else, just learn to live with the fact that shit happens.

>  I don't see this info in the API docs for
> any of the APIs I'm using.

Indeed. Most of the time, it would be just meaningless.


From cjw at sympatico.ca  Fri Oct 19 19:14:03 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Fri, 19 Oct 2007 19:14:03 -0400
Subject: class vs type
In-Reply-To: <ffb75c$kl6$1@ger.gmane.org>
References: <mailman.208.1192798489.13605.python-list@python.org><87wstjtfip.fsf@mulj.homelinux.net>	<ffali6$op5$1@ger.gmane.org>
	<ffb75c$kl6$1@ger.gmane.org>
Message-ID: <47193A3B.6020605@sympatico.ca>

Terry Reedy wrote:
> "Colin J. Williams" <cjw at sympatico.ca> wrote in message 
> news:ffali6$op5$1 at ger.gmane.org...
> | Doesn't Python 3 provide an opportunity
> | to move away from discussions about
> | new_style vs old-style?  This an
> | opportunity to treat old-style as a
> | historical artefact, not requiring
> | current explanation.
> 
> Yes, there will not be 'old-style' classes in Py3 and 3.0 doc will not 
> mention them..  But we are actually at 2.5 and there will be 2.6, 2.7, 2.8? 
> that still have them. 
> 
> 
> 
Terry,

Thanks for clarifying the intent.

The Python 3.0 doc, under Class, has:
Programmer?s note: Variables defined in 
the class definition are class 
variables; they are shared by all 
instances. To define instance variables, 
they must be given a value in the 
__init__() method or in another method. 
Both class and instance variables are 
accessible through the notation 
?self.name?, and an instance variable 
hides a class variable with the same 
name when accessed in this way. Class 
variables with immutable values can be 
used as defaults for instance variables. 
For new-style classes, descriptors can 
be used to create instance variables 
with different implementation details.

Presumably, it is intended that every 
class implicitly inherits from object?

Colin W.




From george.sakkis at gmail.com  Wed Oct  3 23:57:15 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 04 Oct 2007 03:57:15 -0000
Subject: racism kontrol
In-Reply-To: <47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>
	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>
	<mailman.1481.1191444294.2658.python-list@python.org>
	<47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <1191470235.146950.281810@22g2000hsm.googlegroups.com>

On Oct 3, 6:47 pm, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> Steve Holden wrote:
> > Wildemar Wildenburger wrote:
> >> (I aplogize for that last remark. I have nothing against turkish
> >> people, I just couldn't let the opportunity for a mean joke slip.)
>
> > Does this mean you are an equal-opportunity racist?
>
> Yeah! Well observed. :)
> Although "equal-opportunity misantropist" might be a more fitting term.
> Whatever suits me to express my hatred towards humans. Race, gender,
> text editor ... you name it.

I read this somewhere, don't remember where.. it goes like:
 "He's not really mean... he is just a little prejudiced against
anything that breathes." :-)

George



From bj_666 at gmx.net  Mon Oct 29 20:11:58 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 30 Oct 2007 00:11:58 GMT
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<87abq1mxqc.fsf@merkury.smsnet.pl> <fg5j5p$a3t$1@solaris.cc.vt.edu>
Message-ID: <5onb6eFneqbaU4@mid.uni-berlin.de>

On Mon, 29 Oct 2007 17:26:06 -0400, brad wrote:

> Rob Wolfe wrote:
> 
>> I wonder why people always complain about `len` function but never
>> about `iter` or `pprint.pprint`? :)
> 
> Not complaining. len is simple and understandable and IMO fits nicely 
> with split(), strip(), etc... that's why I used it as an example, but 
> list(), etc. could be used as examples as well:
> 
> a_string.list() instead of list(a_string)

`list()` takes any iterable and turns it into a list object.  That's a
generic operation coded *once*.  If you have `str.list()`, `tuple.list()`,
`list.list()`, `dict.list()`, `file.list()`, `MyIterableSomething.list()`,
etc. you have to code the same over and over again for all those objects.
How could that be a benefit!?

>> And to answer the question. In OO programming generic functions
>> are no less important than classes and objects.
> 
> Do they not take away from the OOness of the overall language and 
> introduce inconsistencies?

No not at all.  Why do you think so?  There are things that are best
expressed as functions.  Other allegedly more OO languages have them
too, but you need to stuff them as static methods into classes or even
uglier you see code like ``Spam().spammify(eggs)`` instead of a plain
function call.

And functions are first class objects in Python.  That sounds quite OO to
me.  You can think of a module with functions as a singleton.

Ciao,
	Marc 'BlackJack' Rintsch


From stef.mientki at gmail.com  Wed Oct 10 19:03:37 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Thu, 11 Oct 2007 01:03:37 +0200
Subject: howto add a sub-directory to the searchpath / namespace ?
In-Reply-To: <Np-dnQSN1Ysyo5DanZ2dnUVZ_tbinZ2d@comcast.com>
References: <mailman.45.1192048895.927.python-list@python.org>
	<Np-dnQSN1Ysyo5DanZ2dnUVZ_tbinZ2d@comcast.com>
Message-ID: <470D5A49.5080500@gmail.com>

Larry Bates wrote:
> stef mientki wrote:
>   
>> hello,
>>
>> my program has become a bit large,
>> and now I want to split the files over several subdirectories.
>> So in the example shown below, I just moved the files f1.py and f2.py to 
>> a deeper subdirectory.
>>
>> basedirectory\
>>    mainfile.py
>>    file1.py
>>    file2.py
>>    subdir1\
>>       __init__.py
>>       f1.py
>>       f2.py
>>
>> Now I don't want (even can't) change my program,
>> to change imports from
>>    from f1 import something
>> into
>>    from subdir1.f1 import something
>> simply because f1.py and f2.py are python files dropped by users
>> and I do not know on forehand what will be dropped.
>>
>> I looked into the description of __init__.py,
>> in the hope I could make f1.py and f2.py available as if they were in 
>> the basedirectory,
>> but i couldn't find a way.
>>
>> Is there a way to make f1.py and f2.py available as if they were located 
>> in the base directory,
>> without knowing their names (so in general all py-files in the subdir1)  ??
>>
>> thanks,
>> Stef Mientki
>>
>>
>>     
> Put basedirectory\subdir in the PYTHONPATH environment variable or
>
> os.path.append(r'basedirectory\subdir1')
>
> in the body of your program.
>
>   
thanks Larry,
after a bit of fiddling, I think "os." must be "sys."
and basedirectory shouldn't be in.
so it becomes
    sys.path.append  ( r'subdir1' )
But what the .. is that "r" in front of the appended path ?

cheers,
Stef Mientki


> -Larry
>   



From zyzhu2000 at gmail.com  Tue Oct 23 11:40:50 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Tue, 23 Oct 2007 15:40:50 -0000
Subject: Speed of Nested Functions & Lambda Expressions
Message-ID: <1193154050.424718.298030@i13g2000prf.googlegroups.com>

Hi All,

It is really convenient to use nested functions and lambda
expressions. What I'd like to know is if Python compiles fn_inner()
only once and change the binding of v every time fn_outer() is called
or if Python compile and generate a new function object every time. If
it is the latter, will there be a huge performance hit? Would someone
give some hint about how exactly Python does this internally?

def fn_outer(v):
    a=v*2
    def fn_inner():
        print "V:%d,%d" % (v,a)

    fn_inner()

Thanks,
Geoffrey



From martin at v.loewis.de  Wed Oct 31 11:39:37 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 31 Oct 2007 16:39:37 +0100
Subject: Python bug tracker now secret?
In-Reply-To: <47289e6e$0$14147$742ec2ed@news.sonic.net>
References: <mailman.687.1193842761.13605.python-list@python.org>
	<47289e6e$0$14147$742ec2ed@news.sonic.net>
Message-ID: <4728a1b9$0$6546$9b622d9e@news.freenet.de>

>     There are bug reports in the SourceForge tracker that aren't in the
> "bugs.python.org" tracker, so that move was botched.

Which one in particular?

Regards,
Martin


From mensanator at aol.com  Fri Oct 26 20:21:04 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Fri, 26 Oct 2007 17:21:04 -0700
Subject: Going past the float size limits?
In-Reply-To: <1193441374.061735.308710@o38g2000hse.googlegroups.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
Message-ID: <1193444464.738604.130290@22g2000hsm.googlegroups.com>

On Oct 26, 6:29 pm, jimmy.musselwh... at gmail.com wrote:
> On Oct 26, 6:56 pm, "Chris Mellon" <arka... at gmail.com> wrote:
>
> > On 10/26/07, jimmy.musselwh... at gmail.com <jimmy.musselwh... at gmail.com> wrote:
>
> > > Hello all
> > > It would be great if I could make a number that can go beyond current
> > > size limitations. Is there any sort of external library that can have
> > > infinitely huge numbers? Way way way way beyond say 5x10^350 or
> > > whatever it is?
>
> > > I'm hitting that "inf" boundary rather fast and I can't seem to work
> > > around it.
>
> > What in the world are you trying to count?
>
> The calculation looks like this
>
> A = 0.35
> T = 0.30
> C = 0.25
> G = 0.10
>
> and then I basically continually multiply those numbers together. I
> need to do it like 200,000+ times but that's nuts. I can't even do it
> 1000 times or the number rounds off to 0.0. I tried taking the inverse
> of these numbers as I go but then it just shoots up to "inf".

As mentioned elsewhere, gmpy is a possible solution. You can do
the calculations with unlimited precision rationals without
introducing any rounding errors and then convert the final
answer to unlimited precision floating point without ever
hitting 0 or inf:

>>> import gmpy
>>> A = gmpy.mpq(35,100)
>>> b = A**200000
>>> c = gmpy.mpf(b)
>>> gmpy.fdigits(c)
'4.06321735803245162316e-91187'



From ptmcg at austin.rr.com  Tue Oct  2 18:09:16 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 02 Oct 2007 15:09:16 -0700
Subject: List Question
In-Reply-To: <1191360038.845477.170160@22g2000hsm.googlegroups.com>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
	<1191360038.845477.170160@22g2000hsm.googlegroups.com>
Message-ID: <1191362956.983941.248450@50g2000hsm.googlegroups.com>

On Oct 2, 4:20 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 2, 10:06 pm, brad <byte8b... at gmail.com> wrote:
>
> > How is this expressed in Python?
>
> > If x is in y more than three times:
> >      print x
>
> > y is a Python list.
>
> Simple and readable:
> if len([a for a in y if x == a]) > 3:
>     print x
>
> Or the slightly-too-flashy version:
> if sum(1 for a in y if x == a) > 3:
>     print x
>
> --
> Paul Hankin

As long as you are eschewing count for sum, don't forget that true is
1 and false is 0:

if sum(x==a for a in y) > 3:
    print x

-- Paul



From __peter__ at web.de  Sun Oct 28 13:25:08 2007
From: __peter__ at web.de (Peter Otten)
Date: Sun, 28 Oct 2007 18:25:08 +0100
Subject: Weird AttributeError With Imports
References: <mailman.540.1193591133.13605.python-list@python.org>
Message-ID: <fg2glk$vq8$02$1@news.t-online.com>

Juha S. wrote:

> I'm getting a "AttributeError: 'module' object has no attribute 'clock'" 
> when importing a module from within two packages related to the line: 
> "self.lastTime = time.clock()" in the __init__() of the class Time in 
> the target module.

You probably have a time module that you wrote yourself and which is now
hiding the one in python's standard library. Was your mytime.py formerly
named time.py, and if so, did you remove the corresponding time.pyc?

Peter


From tdwdotnet at gmail.com  Fri Oct 12 16:45:41 2007
From: tdwdotnet at gmail.com (Tim Williams)
Date: Fri, 12 Oct 2007 21:45:41 +0100
Subject: test if email
In-Reply-To: <feojgb$k16$01$1@news.t-online.com>
References: <feojgb$k16$01$1@news.t-online.com>
Message-ID: <9afea2ac0710121345p22be6464i2e0b285229d536ae@mail.gmail.com>

On 12/10/2007, Florian Lindner <Florian.Lindner at xgm.de> wrote:
> Hello,
> is there a function in the Python stdlib to test if a string is a valid
> email address?
>

You mean a valid SMTP email address?

In reality, there isn't a way of doing this.  But a good rule of thumb
is if it hasn't got at least one '@' symbol with at least one '.' to
the right of the right-most '@' symbol then it isn't valid for
internet transmission.

If you meant "test if a string is an existing email address",  then
again there is no foolproof way of testing.   Valid email addresses
can bounce for a variety of reasons, and invalid email addresses don't
always bounce.  Using an SMTP dialogue with the server without sending
an email can have the same bounce/non-bounce (actually, accept/refuse)
results.

HTH :)


From bj_666 at gmx.net  Thu Oct 11 14:42:16 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 11 Oct 2007 18:42:16 GMT
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
Message-ID: <5n7948Fghr61U9@mid.uni-berlin.de>

On Thu, 11 Oct 2007 09:58:48 -0700, Dan Stromberg wrote:

> On Thu, 11 Oct 2007 13:46:12 +0000, Marc 'BlackJack' Rintsch wrote:
> 
>> On Thu, 11 Oct 2007 13:04:53 +0000, Artur Siekielski wrote:
>> 
>>> 1. If I use instance field 'name' which is accessed directly by other
>>> classes,
>>> and later I decide to implement nonstandard getter, I must refactor
>>> 'Person' class
>>> and in some places change 'name' to '_name' (assuming this is now the
>>> field's name).
>>> The problem is that I cannot automatically change 'name' to '_name'
>>> everywhere, because
>>> in some places I want public property value (eg. validated and
>>> formatted), and in other
>>> places raw property value.
>> 
>> So what?  Otherwise you carry *always* the baggage of a public property
>> and a private attribute whether you need this or not.  At least for me it
>> would be unnecessary in most cases.
> 
> That "baggage" of carrying around "unneeded" methods is something the
> computer carries for you - IE, no big deal in 99.99% of all cases.

It shows twice as much attributes if I inspect the objects and I don't know
which are merely useless default getters and setters.  And it is more and
more complex code.  Code can be cut down a bit by some metaclass magic but
this brings in another complexity.

> The "baggage" of possibly fixing (AKA "generalizing") how your attributes
> are accessed is something you lug around while your deadline looms.

Sorry I don't get it.  If I want to customize the access to a "normal"
attribute I simply turn it into a property.

> Here's some code that defines such methods for you:
> 
> #!/usr/bin/env python
> 
> def gimme_set_get(foo, attribute):
>    lst = [ \
>       'def set_%s(self, value):' % attribute, \
>       '  self._%s = value' % attribute, \
>       'def get_%s(self):' % attribute, \
>       '  return self._%s' % attribute, \
>       'foo.set_%s = set_%s' % (attribute, attribute), \
>       'foo.get_%s = get_%s' % (attribute, attribute) \
>       ]
>    s = '\n'.join(lst)
>    code = compile(s, '<string>', 'exec')
>    eval(code)
> 
> class foo:
>    def __init__(self, value):
>       self.public_value = value
> gimme_set_get(foo, 'via_accessor_method_only')
> 
> f = foo(1)
> f.set_via_accessor_method_only(1/9.0)
> print f.get_via_accessor_method_only()
> 
> print dir(f)

And the benefit of this evil ``eval`` dance is exactly what!?

Ciao,
	Marc 'BlackJack' Rintsch


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Tue Oct  2 12:14:42 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Tue, 02 Oct 2007 18:14:42 +0200
Subject: random keypress bounce in a terminal
References: <mailman.1391.1191333170.2658.python-list@python.org>
Message-ID: <5mf93iFd7kugU1@mid.individual.net>

Istv?n wrote:

> It works fine as long as I hit keys normally, but gives extra
> characterts if I keep pressing some key, e.g. up or down arrow
> keys. It runs on a Linux system. What's the wrong with it?

Nothing. Linux VTs will generate multiple characters for special
keys.

Regards,


Bj?rn

-- 
BOFH excuse #258:

That's easy to fix, but I can't be bothered.



From jfurr-nospam at nospam-furrs.org  Thu Oct  4 19:05:27 2007
From: jfurr-nospam at nospam-furrs.org (Jay Furr)
Date: Thu, 04 Oct 2007 23:05:27 -0000
Subject: Dear Hendryx and Leach
References: <470541a7$0$47118$892e7fe2@authen.yellow.readfreenews.net>
	<0llag31er762a2tsdfcs8t1lq9ms1ksghq@4ax.com>
	<QgeNi.259$sm6.23@nlpi069.nbdc.sbc.com>
Message-ID: <Xns99BFC2342C5CDfnord23@216.168.3.44>

"MoParMaN" <scott.hendryx.clothes at sbcglobal.net> wrote in news:QgeNi.259
$sm6.23 at nlpi069.nbdc.sbc.com:

> I will not screw with the cardio doctor again after my stressless stress 
> test.  Jesus fucking christ, I thought I died for 45 seconds.

Can I have your liver, then?

-- 
"It does me no injury for my neighbor to say there are 20 gods, or no 
god. It neither picks my pocket nor breaks my leg."  -- Thomas Jefferson
 
"There's hits in chicken."  -- Wade Boggs


From deets at nospam.web.de  Sat Oct 13 08:15:35 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 13 Oct 2007 14:15:35 +0200
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192267814.707741.176570@z24g2000prh.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
	<1192199862.532118.306290@t8g2000prg.googlegroups.com>
	<1192218795.540056.51700@k35g2000prh.googlegroups.com>
	<1192267814.707741.176570@z24g2000prh.googlegroups.com>
Message-ID: <5nbr7cFhcm6tU1@mid.uni-berlin.de>

 >- The Mac version of Python includes wrappers for a number of Carbon
> APIs, including QuickTime. One for brave souls only; QT's C APIs are
> notoriously complex,

AMEN. I tried to work with that stuff, and it was close to a totally 
failure & desaster...

Diez


From usereplyto at gmail.com  Thu Oct 11 10:34:59 2007
From: usereplyto at gmail.com (Josh Hill)
Date: Thu, 11 Oct 2007 10:34:59 -0400
Subject: Cannibals For The Presidency! Meet, The Candidates!
References: <1192111841.917807.263550@d55g2000hsg.googlegroups.com>
Message-ID: <m0dsg3dq573qii49j4nal6at5dbpv6es67@4ax.com>

On Thu, 11 Oct 2007 07:10:41 -0700, jon_johnfrancisayres at yahoo.com
wrote:

>Introducing The Dhourties And The Dualdigers, Nudism? Nakedity? Aren't
>We Born Naked? Isn't Our Naked Skin Our Clothes? Is Being Born Naked A
>Crime By The Dhourties' Logic If Nudity In Public Is A Crime?

Sanest post I've seen here all year.

BTW, it's "Morlock," not "Warlock."

-- 
Josh

"Playing 'Bop' is like playing Scrabble with all the vowels
missing." - Duke Ellington


From demoncleaner13 at hotmail.com  Sat Oct  6 13:29:16 2007
From: demoncleaner13 at hotmail.com (dcleaner)
Date: Sat, 6 Oct 2007 17:29:16 +0000 (UTC)
Subject: xml modifications
References: <fdm3fk$nk9$1@news1.carnet.hr>
	<47009cf7$0$21616$426a34cc@news.free.fr>
Message-ID: <fe8glc$2uc$1@news1.carnet.hr>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
wrote in news:47009cf7$0$21616$426a34cc at news.free.fr: 

> dcleaner a ?crit :
>> hi there...i'm a begginer level user and i've stumbbled upon a
>> problem a bit beyond my knowledge. i hope that somebody will be able
>> to help me with my problem...
>> 
>> the problem is: i'm transforming an Access database to XML
> 
> <ot>Strange idea IMHO, but anyway...</ot>
> 
>> with some 
>> adjustements. basicaly i have one main table in which i have my main
>> data and keys to other tables containing other relevant data.
>> after exporting my main table to xml i have in some tags only keys to
>> other tables. and now i want to change those keys to meaningful data.
>> for instance: after exporting, i have a line like this:
>> <tagZ>1</tagZ>, and i want to change it to be just an opening tag for
>> something else; <tagQ attr1="xx" attr2="yy">.the data which must be
>> written in attr1 and attr2 depends upon the number (in this case
>> number 1) inside  the tag (tagZ).
> 
> And where's your problem exactly ?-)
> 
> More seriously: you don't explain how you export your database to XML,
> so it won't be easy to help.
> 
> What I'd personnaly do would be to use the db-api (or whatever 
> appropriate for accessing a .mdb) and a templating system (like genshi
> or mako or...) to build the xml file. In which case there's no problem
> accessing the related tables (that's what SQL is for, isn't it ?).
> 
> Now if you hope to get some serious help, you probably want to give
> more details...
> 

the tool i used to transform from mdb to xml was the microsoft's access itself (2007 
version). i only exported one table for now which is my main table, from the others i 
want to extract data so that i could put in inside the newly formed xml. hmm... in 
short.... i want to have everything in one xml file...
about sql database... i'm using xml because i want it to be able to run offline.


From deets at nospam.web.de  Wed Oct 17 09:59:17 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 17 Oct 2007 15:59:17 +0200
Subject: Order by value in dictionary
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
Message-ID: <5nmiplFiouurU2@mid.uni-berlin.de>

Abandoned wrote:

> Hi..
> I have a dictionary like these:
> a={'a': '1000', 'b': '18000', 'c':'40', 'd': '600'} ...... 100.000
> element
> I want to sort this by value and i want to first 100 element..
> Result must be:
> [b, a, d, c .....] ( first 100 element)
> 
> I done this using FOR and ITERATOR but it tooks 1 second and this is
> very big time to my project.
> I want to learn the fastest method..

That is the fastest method, unless you write your own ordered dict
implementation that sorts by value. But that will most probably lose the
time when holding up the invariant when inserting key/values into the
dictionary.

Diez


From paul.hankin at gmail.com  Wed Oct 31 19:38:07 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 31 Oct 2007 23:38:07 -0000
Subject: 3 number and dot..
In-Reply-To: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <1193873887.563993.171230@o80g2000hse.googlegroups.com>

On Oct 31, 7:58 pm, Abandoned <best... at gmail.com> wrote:
> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
>
> How can i do?

Short without being too unreadable:

def conv(x, sep='.'):
    x = str(x)[::-1]
    return sep.join(x[i:i + 3] for i in range(0, len(x), 3))[::-1]

Or more simple-mindedly...

def conv(x, sep='.'):
    x, y = str(x), []
    while x:
        y.append(x[-3:])
        x = x[:-3]
    return sep.join(reversed(y))

--
Paul Hankin



From russandheather at gmail.com  Tue Oct  2 18:07:17 2007
From: russandheather at gmail.com (Russell Warren)
Date: Tue, 02 Oct 2007 22:07:17 -0000
Subject: logging module and trailing newlines
Message-ID: <1191362837.501929.127520@22g2000hsm.googlegroups.com>

I was just setting up some logging in a make script and decided to
give the built-in logging module a go, but I just found out that the
base StreamHandler always puts a newline at the end of each log.
There is a comment in the code that says  "The record is then written
to the stream with a trailing newline [N.B. this may be removed
depending on feedback]"... I guess there wasn't the feedback to drive
the change.

All I'm after is the ability to log things like...

Compiling 'shrubbery.c'...      [DONE]

where the "[DONE]" was added later in time than the "Compiling...",
and the output goes to both stdout and to a log file.  ie: I want to
tee my print statements and keep the ability to skip the trailing
newline.  I had rolled my own primitive version than decided to try
the logging module for kicks.

Anyone have a suggestion on how to get logging to work like this?  Or
know of a way to tee in Windows without forcing other users to install
a tee package?



From marek.rocki at wp.pl  Tue Oct 23 19:20:25 2007
From: marek.rocki at wp.pl (marek.rocki at wp.pl)
Date: Tue, 23 Oct 2007 16:20:25 -0700
Subject: name space problem
In-Reply-To: <1193179470.243479.53270@q3g2000prf.googlegroups.com>
References: <1193179470.243479.53270@q3g2000prf.googlegroups.com>
Message-ID: <1193181625.770328.161650@v29g2000prd.googlegroups.com>

BBands napisa (a):
> An example:
>
> class classA:
>     def __init__(self):
>         self.b = 1
>
> def doStuff():
>     some calcs
>     a..b = 0
>
> a = classA():
> print a.b
> doStuff()
> print a.b
>
> That works as hoped, printing 1, 0.
>
> But, if I move doStuff to another module and:
>
> import doStuff
>
> class classA:
>     def __init__(self):
>         self.b = 1
>
> a = classA()
> print a.b
> doStuff.doStuff()
> print a.b
>
> I get a 1 printed and an error: NameError: global name 'a' is not
> defined
>
> I think this is a name space issue, but I can't grok it.
>
> Thanks in advance,
>
>      jab

Hello. Indeed the doStuff function in the doStuff module can't do 'a.b
= 0' (the double dot was just a typo, right?) because it doesn't know
anything about an object named a.

I think the right solution would be not to use 'a' as a global
variable, but rather to pass it as an explicit parameter to the
function.

In module doStuff:

def doStuff(a):
    # some calcs
    a.b = 0

In the main module:

import doStuff
# ...
doStuff.doStuff(a)



From lasses_weil at klapptsowieso.net  Tue Oct  2 14:19:00 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Tue, 02 Oct 2007 20:19:00 +0200
Subject: Creating a custom python python distribution
In-Reply-To: <1191208680.221428.11880@50g2000hsm.googlegroups.com>
References: <1191208680.221428.11880@50g2000hsm.googlegroups.com>
Message-ID: <47028b97$0$4524$9b4e6d93@newsspool3.arcor-online.net>

shailesh wrote:
> Hi,
> I wish to create a Python distribution includind Python and some other
> libraries (Zope 3, PyWin32, numpy, lxml, etc.) which are required for
> my applications. e.g. there are Enthough and ASPN distributions of
> Python.
> 
> Unfortunately, I have not been able to find the right documentation
> for this purpose.
> 
> Could some one give an overview of what needs to be done for this
> purpose?
> 
I can guess, nothing more.

You could use Inno Setup (windows guy?) 
<URL:http://www.jrsoftware.org/isinfo.php> to install python and then 
automatically all additional libs.

And that is a general idea ... just automate the installing of all libs. 
It may even boil down to just copying the additional files to the 
site-packages directory.

I don't know, but some experimentation should get you long way. It 
shouldn't be very hard.

/W


From paul at boddie.org.uk  Wed Oct 24 11:08:33 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Wed, 24 Oct 2007 08:08:33 -0700
Subject: building a linux executable
In-Reply-To: <5o922hFllmt9U3@mid.individual.net>
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
	<1193228750.497591.202330@y27g2000pre.googlegroups.com>
	<5o922hFllmt9U3@mid.individual.net>
Message-ID: <1193238513.187803.319850@i13g2000prf.googlegroups.com>

On 24 Okt, 16:10, Bjoern Schliessmann <usenet-
mail-0306.20.chr0n... at spamgourmet.com> wrote:
> Paul Boddie wrote:
> > It's not usually the absence of Python that's the problem. What if
> > your application uses various extension modules which in turn rely
> > on various libraries (of the .so or .a kind)? It may be more
> > convenient to bundle all these libraries instead of working out
> > the package dependencies for all the target distributions, even if
> > you know them all.
>
> True, thanks for clarification.

Any suggestions, then? ;-)

I've also run into similar issues with cx_Freeze: I wanted to package
a game written using PyGame, which itself requires some SDL libraries,
which in turn require different libraries like smpeg (if I remember
correctly). It gets to the point where one is effectively building a
Python distribution (another question asked recently but not answered
sufficiently), which has minimal linkage to other libraries - perhaps
the system C libraries, some X11 libraries, and nothing more. Some
ideas about doing that successfully (perhaps LSB enters the picture)
would be quite useful.

Paul



From deets at nospam.web.de  Fri Oct 12 07:42:58 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 12 Oct 2007 13:42:58 +0200
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <5n94u3Fh5e4gU1@mid.uni-berlin.de>

Florian Lindner wrote:

> Hello,
> can I determine somehow if the iteration on a list of values is the last
> iteration?
> 
> Example:
> 
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
> 
> that would print
> 
> 1
> 2
> 9
> 
> 
> Can this be acomplished somehow?

 def last_iter(iterable):
    it = iter(iterable)
    buffer = [it.next()]
    for i in it:
        buffer.append(i)
        old, buffer = buffer[0], buffer[1:]
        yield False, old
    yield True, buffer[0]
        
      

for last, i in last_iter(xrange(4)):
   if last:
       print i*i
   else:
       print i



Diez


From duncan.booth at invalid.invalid  Mon Oct  1 10:08:19 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 1 Oct 2007 14:08:19 GMT
Subject: Select as dictionary...
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<mailman.1333.1191247082.2658.python-list@python.org>
Message-ID: <Xns99BC99FFF748Cduncanbooth@127.0.0.1>

"J. Clifford Dyer" <jcd at sdf.lonestar.org> wrote:

> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> linkdict = dict()
> for k,v in links:
>     linkdict[k] = v
> print linkdict

Wouldn't it be simpler just to do:

  aia.execute("SELECT id, w from list")
  linkdict=dict(aia.fetchall())

even better would be to use an iterator to avoid fetching the entire 
resultset as a list.


From arkanes at gmail.com  Thu Oct 11 17:01:54 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 11 Oct 2007 16:01:54 -0500
Subject: problem with wxPanel derivation class
In-Reply-To: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
References: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>
Message-ID: <4866bea60710111401m53c4cdafyec9805c0ddd4c6bd@mail.gmail.com>

On 10/11/07, <"@bag.python.org <"none> wrote:
> wxGlade created a simple Frame with a panel a sizer and 3 wxControls ,
> saticText, TextCtrl, and a Button.
>
<snip>

> It seems as though the complaint is that  a 'wxWindow *' is expected,
> 'Panel' is received
> However, Panel IS a wx.Panel derivative which IS a wx.Window derivative!
> Additionally, the methods in the code of Panel and MyFrameOne seem to be
> identical.
> I can't understand this. Anyone have any thoughts?
>

It's because you didn't call the base class __init__. wxPython is a
SWIG wrapper around the C++ wxWidgets library, and if you don't call
the base class the SWIG infrastructure that maps your class to an
underlying C++ class doesn't happen and you get this error.


From iansan at gmail.com  Wed Oct 17 14:45:21 2007
From: iansan at gmail.com (IamIan)
Date: Wed, 17 Oct 2007 11:45:21 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192529804.759199.76350@i13g2000prf.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
Message-ID: <1192646721.518411.282370@v29g2000prd.googlegroups.com>

Thank you for the replies. After a lot of research I tracked down the
issue. I was using the CGI to build all of the pages for the site,
then filling in content with .innerHTML= as users clicked on tabs.
Since I wanted to place the Google Ads in different parts of each
page, the Google Ads JavaScript was in each page chunk being
dynamically placed with .innerHTML.

It turns out that JavaScript isn't executed when it is placed in a
page via .innerHTML, it is inserted as text hence the unterminated
string literal error. I tried some tricks to execute it after it was
added to the page (eval, appendChild) but it still didn't work. The
Google Ads JavaScript is very touchy and their agreement is very
strict; it wasn't even clear that what I was doing was in line with
it, so I broke the site up into multiple CGI pages and now it works
fine.

One CGI question - since all of my CGIs are spitting out HTML is their
source code safe? wget and linking to the source deliver the output
HTML. Are there any other methods of trying to steal the source CGI I
need to protect against?

Thank you.



From redtiger84 at googlemail.com  Sat Oct 13 10:34:28 2007
From: redtiger84 at googlemail.com (Christoph Krammer)
Date: Sat, 13 Oct 2007 14:34:28 -0000
Subject: Error on base64.b64decode() ?!
In-Reply-To: <mailman.129.1192201749.927.python-list@python.org>
References: <1192201153.082875.45190@i13g2000prf.googlegroups.com>
	<mailman.129.1192201749.927.python-list@python.org>
Message-ID: <1192286068.498618.245970@k35g2000prh.googlegroups.com>

On 12 Okt., 17:09, Jean-Paul Calderone <exar... at divmod.com> wrote:
> If you get an incorrect padding error, try appending a "=" and decoding
> again.  If you get the error again, try appending one more "=".  If it
> still doesn't work, then you might be out of luck.

This seems to work in some cases, but not all. Whats the deal with
this adding of "="? Is there an implementation error in python, or are
other implemenations of base64 more robust then they have to be?

Christoph




From Shawn at Milochik.com  Wed Oct  3 10:03:36 2007
From: Shawn at Milochik.com (Shawn Milochik)
Date: Wed, 3 Oct 2007 10:03:36 -0400
Subject: [Tutor] data from excel spreadsheet to csv and manipulate
In-Reply-To: <BAY111-W40C493F93FA9AE2A7B9C95F3AF0@phx.gbl>
References: <004d01c8042c$db761440$0b0aa8c0@rbsassociates.local>
	<BAY111-W40C493F93FA9AE2A7B9C95F3AF0@phx.gbl>
Message-ID: <2dc0c81b0710030703j11c6e1bds7aec73003be1420@mail.gmail.com>

On 10/3/07, sacha rook <sacharook at hotmail.co.uk> wrote:
>
> Hi
>
>  can anyone help with the best way to tackle this?
>
>  I have a spreadsheet ms excel, that has a name column that I want to
> extract to csv and manipulate as follows.
>
>  The name column has data in this format
>
>  Name
>
>  Surname Firstname
>
>  after extracting and manipulating I want it to be as follows in three comma
> separated fields;
>
>
>  Firstname, Surname, Firstname Surname
>
>  So
>
>  Smith John
>
>  becomes
>
>  John, Smith, John Smith
>
>  I hope I have explained myself.
>
>  I want to use python to do all this if sensible, so what is the best
> approach?
>
>  Many thanks
>
>  S
>
> ________________________________
> Do you know a place like the back of your hand? Share local knowledge with
> BackOfMyHand.com
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
>
>


Here's the best approach:

1. Browse: http://python.org/doc/

2. Search Google.

3. Write code.

4. Post code to the group and ask for help with the pieces that aren't
working as you expect.

Have fun!

Shawn


From egermani at gmail.com  Wed Oct  3 16:01:18 2007
From: egermani at gmail.com (MindMaster32)
Date: Wed, 03 Oct 2007 13:01:18 -0700
Subject: List of objects X Database
Message-ID: <1191441678.264856.224900@19g2000hsx.googlegroups.com>

I am writing a script that has to read data from an ASCII file of
about 50 Mb and do a lot of searches and calculations with that data.
That would be a classic problem solved by the use of a database
(SQLite would suit just fine), but that would require the user to
install more packages other than python itself, and that I am trying
to avoid.
Since the data is not too large, I wonder if there is another way to
store all data in memory and work with it more or less like a
database, doing searches and working with datafields.

This is not clear to me how can be implemented. I thought of creating
a class with the data structure, and creating a list of objects of
that class, each one containing one line of data from the "database".

Any thoughts or suggestions?

Thanks!
Eduardo



From steven.bethard at gmail.com  Thu Oct 11 13:19:40 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 11 Oct 2007 11:19:40 -0600
Subject: Parsing a commandline from within Python
In-Reply-To: <mailman.95.1192122053.927.python-list@python.org>
References: <mailman.95.1192122053.927.python-list@python.org>
Message-ID: <RuednddnF6-xxpPanZ2dnUVZ_sDinZ2d@comcast.com>

andreas.huesgen at arcor.de wrote:
> Is there any buildin function which mimics the behavior of the
> standard commandline parser (generating a list of strings
> "foo bar" and "some text" from the commandline
> <"foo bar" "some text">)?

Try the shlex module::

     >>> import shlex
     >>> shlex.split('"foo bar" "some text"')
     ['foo bar', 'some text']

STeVe


From ianb at colorstudy.com  Sat Oct 13 20:32:51 2007
From: ianb at colorstudy.com (Ian Bicking)
Date: Sat, 13 Oct 2007 17:32:51 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191677381.068666.65870@k79g2000hse.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1191677381.068666.65870@k79g2000hse.googlegroups.com>
Message-ID: <1192321971.833072.98160@v23g2000prn.googlegroups.com>

On Oct 6, 8:29 am, Michele Simionato <michele.simion... at gmail.com>
wrote:
> Do you (or something else) have something to say about Beaker?
> I looked at the source code and it seems fine to me, but I have
> not used it directly, not stressed it. I need a
> production-level WSGI session middleware and I wonder what the
> players are (for instance how Beaker does compare with flup?)

Beaker is the only seriously maintained WSGI session at the moment --
flup isn't, AFAIK, very actively maintained or improved.
paste.session is a particularly naive implementation of sessions.

So as a result, Beaker is kind of the only game in town.
Incidentally, it's not really related to SQLAlchemy; it came out of
Myghty.  Same author, of course, but fairly different domains.

  Ian



From jstroud at mbi.ucla.edu  Tue Oct 16 05:41:10 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 16 Oct 2007 09:41:10 GMT
Subject: Good Book
In-Reply-To: <mailman.51.1192522719.13605.python-list@python.org>
References: <mailman.51.1192522719.13605.python-list@python.org>
Message-ID: <WG%Qi.8448$6p6.1121@newssvr25.news.prodigy.net>

Lars Johansen wrote:
> HI are there any recommended books for an sysadmin who has been mostly
> writing shell scripts, but want to move up to create more complex
> programs.

Not that I am shamelessly promoting python here, but in all sincerity, 
Programming Python by Lutz is exactly what you want. It is perfect for 
sysadmins who need more programming muscle. You need to know the basics 
of python before you read it, though.

James

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

http://www.jamesstroud.com


From gherzig at fmed.uba.ar  Thu Oct 11 16:21:30 2007
From: gherzig at fmed.uba.ar (Gerardo Herzig)
Date: Thu, 11 Oct 2007 17:21:30 -0300
Subject: multimethods decorator
In-Reply-To: <470df778$0$11653$426a74cc@news.free.fr>
References: <mailman.30.1192028986.927.python-list@python.org>	<470d0914$0$24295$426a74cc@news.free.fr>	<mailman.58.1192065079.927.python-list@python.org>
	<470df778$0$11653$426a74cc@news.free.fr>
Message-ID: <470E85CA.1060000@fmed.uba.ar>

Bruno Desthuilliers wrote:

>gherzig at fmed.uba.ar a ?crit :
>  
>
>>>Gerardo Herzig a ?crit :
>>>      
>>>
>>>>Hi all. Im reading the Gido's aproach using decorators at
>>>>http://www.artima.com/weblogs/viewpost.jsp?thread=101605
>>>>
>>>>It looks good to me, but the examples shows the functionality using
>>>>functions.
>>>>Now, when i try to give this decorator into a method, if i try the
>>>>
>>>>class test(object):
>>>>   @multimethod(...)
>>>>   def met(self, ...):
>>>>
>>>>The multimethod decorator needs the types of the arguments, and, if the
>>>>met method requires self as the first argument, the multimethod should
>>>>look like
>>>>@multimethod(self.__class__, bla, ble) or some like that...
>>>>
>>>>Now i know that im wrong, because i have this error
>>>> >@multimethod(self.__class__)
>>>> >NameError: name 'self' is not defined
>>>>        
>>>>
>>>Indeed. Neither self (which will only be known at method call time) nor
>>>even the 'test' class (which is not yet defined when the decorator is
>>>executed) are availables.
>>>      
>>>
>
>  
>
>>Doh!
>>    
>>
>
>If you're surprised, then you'd better learn way more about Python's 
>internal (execution model && object model mostly) before continuing with 
>multimethods.
>  
>
Is not that, is just...it allways make sense to me AFTER someone tells 
me!! :)

>  
>
>>>>So what would be the first argument to @multimethod??
>>>>        
>>>>
>>>A string ?-)
>>>      
>>>
>
>  
>
>>Ah? And what will that string contains?
>>    
>>
>
>What makes sens for you. Don't forget that Python has very strong 
>introspection features. Also note that it's not uncommon to use a 2-pass 
>approach : marking some methods with the decorator, then doing the real 
>processing in the metaclass (which of course implies a custom metaclass) 
>or in the __new__ method (in which case this processing will happen on 
>*each* instanciation).
>  
>
Oh well, now you kill me with that one.

>  
>
>>>FWIW, there's already an implementation of multiple dispacth by Mr. Eby...
>>>      
>>>
>>Oh yes, i found the dispatch version of multimethods, but i have not tried
>>it yet. Do you think is better this version than Guido's?
>>    
>>
>
>I think that dispatch is actually used in a few packages, frameworks or 
>applications. Is it the case of Guido's stuff ?
>
>Also, IIRC, Guido's snippet is quite less generic than dispatch (which 
>is based on expression rules, not only on types).
>  
>
Ok. So im giving dispatch version a chance. Its working nice so far. 
Thanks Man!
Gerardo


From michael.langford at gmail.com  Wed Oct 31 14:11:29 2007
From: michael.langford at gmail.com (Michael)
Date: Wed, 31 Oct 2007 18:11:29 -0000
Subject: py2exe (or other exe builder) on Vista system for Vista/XP
	install targets.
In-Reply-To: <5ordsfFo0djvU1@mid.individual.net>
References: <1193832521.937425.94860@o3g2000hsb.googlegroups.com>
	<5ordsfFo0djvU1@mid.individual.net>
Message-ID: <1193854289.186421.100660@57g2000hsv.googlegroups.com>

Bj?rn, what library files end up being in your dist directory for that
project? Would you mind posting a copy of the output of dir?

I'm curious to see if there is a discrepancy.

        --Michael

On Oct 31, 9:22 am, Bjoern Schliessmann <usenet-
mail-0306.20.chr0n... at spamgourmet.com> wrote:
> Michael wrote:
>
> [py2exe on Vista and XP]
>
> > When I attempt to run, I get "The procedure entry point
> > _except_handler4_common could not be located in the dynamic link
> > library mscvrt.dll."  Apparently vista has one more
> > _except_handler#_common function than XP does.
>
> Strange -- it works for me. I compile in Vista and deploy in Vista
> and XP (SP2). I'm using Twisted 2.5 and wxWidgets 2.8.
>
> I'm sorry that I cannot help more. I dropped py2exe recently because
> I had a similar missing symbol problem with a Windows 2000
> computer; so I installed Python and the modules directly on all my
> machines.
>
> Regards,
>
> Bj?rn
>
> --
> BOFH excuse #223:
>
> The lines are all busy (busied out, that is -- why let them in to
> begin with?).




From tdelaney at avaya.com  Thu Oct  4 23:49:10 2007
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Fri, 5 Oct 2007 11:49:10 +0800
Subject: Python 3.0 migration plans?
In-Reply-To: <1191013667.777259.206110@22g2000hsm.googlegroups.com>
Message-ID: <E4C7BCAB1872014F81CEAACD25699B8C0849D9@301081ANEX2.global.avaya.com>

TheFlyingDutchman wrote:

> On Sep 28, 1:09 pm, Steve Holden <st... at holdenweb.com> wrote:
> 
>> That's because the tutor list doesn't offer a newsgroup. He was
>> probably just trying to get rid of you.
>> 
>> Now at 98.75% ...
> 
> Not sure if that's the reading on your trollmeter or on the meter that
> measures what percentage of your posts you get huffy.

I would imagine it's the SpamBayes score your posts are currently
getting on Steve's machine.

Tim Delaney


From deets at nospam.web.de  Wed Oct 10 11:37:53 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 10 Oct 2007 17:37:53 +0200
Subject: Singleton
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<13gplgh75hot354@corp.supernews.com>
	<1192024635.416697.210620@o3g2000hsb.googlegroups.com>
	<13gprb0dd0b2u33@corp.supernews.com>
Message-ID: <5n49uhFg32o6U1@mid.uni-berlin.de>

Steven D'Aprano wrote:

> On Wed, 10 Oct 2007 06:57:15 -0700, Carl Banks wrote:
> 
>> On Oct 10, 9:39 am, Steven D'Aprano <st... at REMOVE-THIS-
>> cybersource.com.au> wrote:
>>> On Wed, 10 Oct 2007 09:36:56 +0000, pythoncurious wrote:
>>> > So how do people solve this? Is there an obvious way that I missed?
>>>
>>> Mostly by avoiding singletons. Why do you need only one instance?
>>> Perhaps you should consider the Borg pattern instead.
>>>
>>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531
>> 
>> 
>> That wouldn't help.  In the OP's case, it would create two borgs.
> 
> Two borgs, or two million, the whole point of using borgs is that it
> doesn't matter.

It does matter where the classes live (module-wise). Which is the problem
the OP had, borg or not to borg.



class Borg(object):
    __shared_state = {}

    def __init__(self):
        self.__dict__ = self.__shared_state


if __name__ == "__main__":
    import test
    mainBorg = Borg()
    mainBorg.a = 100
    testBorg = test.Borg()
    testBorg.a = 200
    print mainBorg.a
    print testBorg.a
    


Run this as this:

droggisch at ganesha:/tmp$ ll *py
-rw-r--r-- 1 droggisch  298 2007-10-10 17:30 test.py
droggisch at ganesha:/tmp$ python test.py
100
200


You will see that there are _two_ different Borg-Cubes, as the output
indicates. This has hit me more than once, and Carl Banks pointed that
error out to the OP.

And if you'd follow your own advice of " take each word to have it's normal
English meaning," then the OP is not

"struggling to get a singleton working"

but struggling to get "some sort of singleton working", as you cite
yourself, and first tried to implement his needs using no singleton-recipe
(or borg pattern) but a module:

"""
The first approach was simply to use a module, and every variable in
it will be seen by all who import the module.
That works in some cases, but not if I have the following structure:
"""

Which didn't work out for the same reason his singleton approach didn't work
and your beloved Borg-pattern doesn't as well.

Diez


                            


From arkanes at gmail.com  Tue Oct  9 10:54:34 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 09:54:34 -0500
Subject: Memory leak/gc.get_objects()/Improved gc in version 2.5
In-Reply-To: <1191890643.412806.121180@r29g2000hsg.googlegroups.com>
References: <1191890643.412806.121180@r29g2000hsg.googlegroups.com>
Message-ID: <4866bea60710090754n5d6963edx51596593752feeb6@mail.gmail.com>

On 10/8/07, crazy420fingers at gmail.com <crazy420fingers at gmail.com> wrote:
> I'm running a python program that simulates a wireless network
> protocol for a certain number of "frames" (measure of time).  I've
> observed the following:
>
> 1. The memory consumption of the program grows as the number of frames
> I simulate increases.
>
> To verify this, I've used two methods, which I invoke after every
> frame simulated:
>
> --  Parsing the /proc/<pid>/status file as in:
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/286222
> --  Using ps vg | grep python | awk '!/grep/ {print " ",$8}'  in an
> os.system() call.
>
> The memory usage vs. frame number graph shows some big "jumps" at
> certain points, and, after a large number of frames, shows a steady
> upward slope
>

This would be expected if you're creating ever-larger amounts of
objects - python uses memory pools and as the number of simultaneous
objects increases, the size of the pool will need to increase. This
isn't expected if the total number of objects you create is pretty
much static, but the way you're trying to determine that is flawed
(see below).

> 2. I think I've verified that the objects I instantiate are actually
> freed-- I'm therefore assuming that this "leak" is "caused" by
> python's garbage collection mechanism. I count the number of objects I
> generate that are being tracked by gc as follows:
>
>     gc.collect()
>     objCount = {}
>     objList = gc.get_objects()
>     for obj in objList:
>         if getattr(obj, "__class__", None):
>             name = obj.__class__.__name__
>             if objCount.has_key(name):
>                 objCount[name] += 1
>             else:
>                 objCount[name] = 1
>
>     for name in objCount:
>         print name, " :", objCount[name]
>
>    del objList
>
> Running this snippet every hundred frames or so, shows that the number
> of objects managed by gc is not growing.
>
> I upgraded to Python 2.5. in an attempt to solve this problem. The
> only change in my observations from version 2.4 is that the absolute
> memory usage level seems to have dropped. However, I still see the
> jumps in memory usage at the same points in time.
>
> Can anybody explain why the memory usage shows significant jumps (~200
> kB or ~500 kb) over time (i.e. "frames") even though there is no
> apparent increase in the objects managed by gc? Note that I'm calling
> gc.collect() regularly.
>

You're misunderstanding the purpose of Pythons GC. Python is
refcounted. The GC exists only to find and break reference cycles. If
you don't have ref cycles, the GC doesn't do anything and you could
just turn it off.

gc.get_objects() is a snapshot of the currently existing objects, and
won't give you any information about peak object count, which is the
most direct correlation to total memory use.

> Thanks for your attention,
>
> Arvind
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 23 14:54:52 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 23 Oct 2007 20:54:52 +0200
Subject: New module for method level access modifiers
In-Reply-To: <1193159299.190539.136450@z24g2000prh.googlegroups.com>
References: <1193159299.190539.136450@z24g2000prh.googlegroups.com>
Message-ID: <471e43ad$0$21451$426a34cc@news.free.fr>

TimeHorse a ?crit :
> I have started work on a new module that would allow the decoration of
> class methods to restrict access based on calling context.
> Specifically, I have created 3 decorators named public, private and
> protected.

Lord have mercy.



From matthieu.brucher at gmail.com  Tue Oct 16 12:47:05 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Tue, 16 Oct 2007 18:47:05 +0200
Subject: sqlite and TemporaryFile under Windows
In-Reply-To: <4714E6C0.3020306@ulmcnett.com>
References: <e76aa17f0710151354s6718a57redc5a85dfdfe706@mail.gmail.com>
	<4713D47B.2070600@ulmcnett.com>
	<e76aa17f0710151405j628e28c2u9d2cffab4dcbd01d@mail.gmail.com>
	<4713DAB4.3020904@ulmcnett.com>
	<e76aa17f0710152235j305aeccka6ec92b58d3ebf4b@mail.gmail.com>
	<4714E6C0.3020306@ulmcnett.com>
Message-ID: <e76aa17f0710160947r1df05ea7wc3c9da328dc84c09@mail.gmail.com>

>
> > Obviously it cannot, but what are the reason it can't ?
>
> I have no idea.
>
> > Well, I could, but in this case I have to delete the file myself, which
> > the whole point of the use of TemporaryFile.
>
> Go with the flow dude! Unless you want to solve the issue by delving in
> to the source for pysqlite yourself so that it can work on file-like
> object, the extra os.unlink call doesn't seem to be a big deal.



Well, that's what I'm doing now :) (Perhaps the fact that the sqlite module
is in C explains the matter)


Also, you are downloading the file off the Internet somewhere anyway.
> Either you work with that stream without creating a file (which we've
> already discovered isn't possible) or you save it to a file. Sure, it
> would be nice to use TemporaryFile(), but it shouldn't be a showstopper
> to use mktemp() an unlink() instead.


Yes, I suppose...

Thank you for your time

Matthieu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/6aa8719a/attachment.html>

From mailman at hanez.org  Fri Oct 19 11:17:40 2007
From: mailman at hanez.org (Johannes Findeisen)
Date: Fri, 19 Oct 2007 17:17:40 +0200
Subject: Please Help !!!
In-Reply-To: <108BF5E92DB9D711B75C00D0B7E1B9B203503592@8EMAIL1>
References: <108BF5E92DB9D711B75C00D0B7E1B9B203503592@8EMAIL1>
Message-ID: <1192807060.6643.11.camel@jfin-lx2.mbholding.intra>

Hello Heiko,

On Wed, 2007-10-17 at 11:32 +0200, Heiko Schlierkamp wrote:
> I need to update the virus program every day with the new dat file from
> mcafee
> I would like to us a Bat file to go to the web page and download the dat
> file automatically to a specific Directory, that I have created, but my
> problem lays in that the bat file will open the file to be downloaded but
> the bat file does not confirm the save button so that it start to download
> the file, that I still need to do manual. Please advice me with what still
> need to be done!!
> Your help will be very appreciated!!!
> 
> I have added the file so you can see what it does exactly!!

It is generally not a good idea to attach files like .zip or .rar!
Windows users do not like to get such things via mail cause of the risk
to infect their systems with a virus.

You could paste your script directly in the mail body so everybody could
read it without to extract files from an archive. Since i am using Linux
it was no problem for me to open the file because for me it is nearly no
risk. 

The file in the rar archive is a Windows batch file. This is the wrong
mailinglist for that! This is the mailinglist of the Python programming
language and you will not reach the right persons for answering your
question here... :( I don't know where to go with your problem but a
Windows batch programming list would be a better place to ask...

One hint: I don't know how downloading files from a batch script work in
Windows environments. A nice tool for downloading files in UNIX
environments is called "wget". I think there is a Windows port
available... 

<<<googleing>>> 

Ah, here it is: http://gnuwin32.sourceforge.net/packages/wget.htm

Since this is the Python mailinglist you maybe should write your batch
script in Python. Then this list could help you going on... ;)

Kind regards,
hanez




From deets at nospam.web.de  Mon Oct  8 04:40:26 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 08 Oct 2007 10:40:26 +0200
Subject: pytz has so many timezones!
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
Message-ID: <5mu8nqFf6tvaU1@mid.uni-berlin.de>

Sanjay wrote:

> Hi All,
> 
> I am using pytz.common_timezones to populate the timezone combo box of
> some user registration form. But as it has so many timezones (around
> 400), it is a bit confusing to the users. Is there a smaller and more
> practical set? If not, some suggestions on how to handle the
> registration form effectively would help me a lot.

I'm not a timezone-guru - but I _think_ if there are 400 timezones defined,
it should list them, shouldn't it? What if you lived in the one that's not
part of the "practical subset"? 

The only one who can define what that practical subset is supposed to
consist of is _you_. You know where your app is being used, from whom.

Diez


From martin at v.loewis.de  Sun Oct 14 03:35:16 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 14 Oct 2007 09:35:16 +0200
Subject: unicodedata implementation - categories
In-Reply-To: <mailman.175.1192307538.927.python-list@python.org>
References: <mailman.175.1192307538.927.python-list@python.org>
Message-ID: <4711C6B4.3030709@v.loewis.de>

> 1) Why doesn't the category method raise an Exception, like the name method
> does?

As Chris explains, the result category means "Other, Not Assigned".
Python returns this category because it's the truth: for those
characters, the value of the "category" property really *is* Cn;
it means that they are not assigned.

If you are wondering how unicodedata.c comes up with the result:
the unassigned characters get a record index of 0, and that has a
category value of 0, which is "Cn".

> 2) Given that the category method doesn't currently raise an Exception,
> please could someone explain how the category is calculated? I have tried to
> figure it out based on the CPython code, but I have thus far failed, and I
> would also prefer to have it explicitly defined, rather than mandating that
> a Jython (.NET, etc) implementation uses the same (possibly non-optimal for
> Java) data structures and algorithms. 

You definitely should *not* follow the Python implementation. Instead,
the Unicode database is defined by the Unicode consortium, so the
Unicode standard is the ultimate specification.

To implement it in Java, I recommend to use java.lang.Character.getType.
If that returns java.lang.Character.UNASSIGNED, return "Cn".

Regards
Martin


From kyosohma at gmail.com  Mon Oct  8 11:41:52 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 08 Oct 2007 15:41:52 -0000
Subject: How to create a file on users XP desktop
In-Reply-To: <mailman.1669.1191856216.2658.python-list@python.org>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
	<4708CAF4.7020206@bigfoot.com> <47090D86.5080805@tim.thechases.com>
	<mailman.1648.1191778298.2658.python-list@python.org>
	<1191853183.871616.227350@k79g2000hse.googlegroups.com>
	<1191854927.113225.67880@o80g2000hse.googlegroups.com>
	<mailman.1669.1191856216.2658.python-list@python.org>
Message-ID: <1191858112.937150.85650@57g2000hsv.googlegroups.com>

On Oct 8, 10:11 am, Tim Golden <m... at timgolden.me.uk> wrote:
> kyoso... at gmail.com wrote:
> > On Oct 8, 9:19 am, goldtech <goldt... at worldpost.com> wrote:
> >>> from win32com.shell import shell, shellcon
> >>> desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
> >>> </code>
> >> Tim,
>
> >> How did you learn Win32com?
>
> >> Other than the O'Reilly book, I've never found a lot of
> >> documentation.
>
> >> Trying to browse COM in PythonWin is tough - there's tons of stuff in
> >> there. I've never been able to find the Win32com classes, methods,
> >> usage examples when I browse COM in PythonWin.
>
> >> For example where is, shell.SHGetFolderPath and shellcon.CSIDL_DESKTOP
> >> officially documented?
>
> >> Did you learn from using Visual C++ or VB? How did you learn this
> >> stuff?
>
> >> Thanks,
> >> Lee G.
>
> > Pretty much the only place to learn stuff that's not in the PyWin32
> > docs is on one of the MSDN sites. Yes, that can suck. Here's the
> > general page:http://msdn2.microsoft.com/en-us/default.aspx
>
> > You can google for them too to get direct links to the MSDN page.
>
> > The ActiveState Python (AKA ActivePython) has an IDE that allows you
> > to browse the COM module. It also has a help file that allows you to
> > browse the PyWin32 docs locally. I think you can download that without
> > downloading ActivePython.
>
> > Mike
>
> FWIW, the pywin32 distribution itself also comes with a local
> .chm file. But aside from that, there have been several abortive
> attempts -- including by Mike & myself! -- to get some kind of
> online help going for pywin32, but nothing's really gained traction,
> and we've all got more interesting things to be doing...
>
> One point to bear in mind that, more or less, the pywin32 stuff
> just wraps the MS API really closely, mostly doing just enough
> of the messy plumbing to present the API "objects" as Python
> objects. That's to say: find out how to do it from a C++ or VB
> or Delphi tutorial and translating into Python often isn't hard.
>
> As it happens I've been using Windows APIs for a few years,
> so I have a bit of a head start. But I've answered quite
> a few questions on python-win32 by putting the subject line
> into Google, picking a likely-looking response and translating
> it into Python.
>
> In this case ("How to create a file on users XP desktop") the
> question was too broad and tended to throw up user-oriented
> answers. I tried a few permutations, including limiting the
> search to msdn.microsoft.com, none of which showed much on the
> first couple of pages. A search of the pywin32.chm files does
> point in the right direction, but the fact is that the shell
> functionality exposed by Windows which does this kind of
> stuff is non-intuitive.
>
> While I think everyone agrees that the Windows side of Python
> could benefit from more and better docs, the general answer to:
> How do I do X in Python under Windows? is: How do I X under Windows?
>
> TJG

I'm planning on working on that PyWin32 site some more this fall/
winter. Unfortunately, I shouldn't have volunteered my time during the
summer as I have very irregular a/c at home, and thus it was very
uncomfortable to use my PC when I was off work. Lame maybe, but I
dislike using a computer when it's above 90 degrees and the humidity
is higher than 70%. Bleh!

Sorry about that. I am experimenting with MediaWiki to see if it's any
faster than MoinMoin. If you know of a fast, easy-to-use wiki that's
better than both of those, let me know.

Mike



From paul.hankin at gmail.com  Thu Oct  4 11:47:55 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 04 Oct 2007 15:47:55 -0000
Subject: Combine two dictionary...
In-Reply-To: <MK7Ni.6464$mS5.5053@fe089.usenetserver.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
	<mailman.1357.1191260483.2658.python-list@python.org>
	<1191261690.056215.179920@57g2000hsv.googlegroups.com>
	<MK7Ni.6464$mS5.5053@fe089.usenetserver.com>
Message-ID: <1191512875.552006.259670@y42g2000hsy.googlegroups.com>

On Oct 4, 4:35 pm, Gary Coulbourne <b... at bears.org> wrote:
> >>> dict1={1: 4,  3: 5}... and 2 millions element
> >>> dict2={3: 3,  8: 6}... and 3 millions element
>
> If you don't mind doing some kind of lazy evaluation, you could do
> something like...
>
> ------------------------------
> dict1={1:4, 3:5}
> dict2={3:3, 8:6}
>
> import UserDict
>
> class Merge(UserDict.DictMixin):
>
>    def __init__(self,d1,d2):
>        self.dict1 = d1
>        self.dict2 = d2
>
>        keyset = set(d1.keys())
>        keyset.update(d2.keys())
>
>        self.dkeys = list(keyset)
>
>    def keys(self):
>        return self.dkeys
>
>    def __getitem__(self,key):
>        v1 = 0
>        v2 = 0
>        if key in self.dict1:
>           v1 = self.dict1[key]
>        if key in self.dict2:
>           v2 = self.dict2[key]
>        return v1+v2

Generalising to support any number of dicts reduces the amount of code
somewhat:

import UserDict

class Merge(UserDict.DictMixin):
    def __init__(self, *args):
        self._dicts = args
        self._keys = list(set(k for d in self._dicts for k in d))
    def keys(self):
        return self._keys
    def __getitem__(self, key):
        return sum(d.get(key, 0) for d in self._dicts)

--
Paul Hankin



From nick.bastin at gmail.com  Sun Oct  7 20:37:55 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Sun, 7 Oct 2007 20:37:55 -0400
Subject: supplying password to subprocess.call('rsync ...'),
	os.system('rsync ...')
In-Reply-To: <47066516$0$29428$9b622d9e@news.freenet.de>
References: <1191594819.381604.20680@o80g2000hse.googlegroups.com>
	<1191598625.701334.3450@57g2000hsv.googlegroups.com>
	<47066516$0$29428$9b622d9e@news.freenet.de>
Message-ID: <66d0a6e10710071737x6ccae98l56be0b1cce9c225@mail.gmail.com>

On 05 Oct 2007 16:23:50 GMT, Stargaming <stargaming at gmail.com> wrote:
> On Fri, 05 Oct 2007 08:37:05 -0700, timw.google wrote:
> >> I can't ssh w/o supplying a password. That's the way the security is
> >> set up here.
> >>
> >> How do I use python to do this, or do I just have to write a zsh
> >> script?
> >>
> >> Thanks.
> >
> > I wrote a zsh script to do what I wanted, but I'd still like to know how
> > to do it in Python.
>
> `subprocess.Popen` has a keyword argument called `stdin` -- what takes
> the password, I guess. Assigning `subprocess.PIPE` to it and using
> `Popen.communicate` should do the trick.

SSH doesn't read passwords off of stdin.  If you want to supply a
password to SSH, then you need to control a pty directly.

--
Nick


From bozonm at vscht.cz  Thu Oct 25 17:23:37 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Thu, 25 Oct 2007 23:23:37 +0200
Subject: Delete all not allowed characters..
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
	<pan.2007.10.25.15.42.34.428907@vscht.cz>
	<13i1m1idi8f2r46@corp.supernews.com>
Message-ID: <pan.2007.10.25.21.23.36.955922@vscht.cz>

> 
>> the list comprehension does not allow "else", but it can be used in a
>> similar form:
>> 

( I was wrong, as Tim Chase have shown )

>> s2 = ""
>> for ch in s1:
>>     s2 += ch if ch in allowed else " "
>> 
>> (maybe this could be written more nicely)
> 
> Repeatedly adding strings together in this way is about the most 
> inefficient, slow way of building up a long string. (Although I'm sure 
> somebody can come up with a worse way if they try hard enough.)
> 
> Even though recent versions of CPython have a local optimization that 
> improves the performance hit of string concatenation somewhat, it is 
> better to use ''.join() rather than add many strings together:
> 

String appending is not tragically slower,
for strings long tens of MB, the speed
makes me a difference in few tens of percents,
so it is not several times slower, or so

> s2 = []
> for ch in s1:
>     s2.append(ch if (ch in allowed) else " ")
> s2 = ''.join(s2)
> 
> Although even that doesn't come close to the efficiency and speed of 
> string.translate() and string.maketrans(). Try to find a way to use them.
> 
> Here is one way, for ASCII characters.
> 
> allowed = "abcdef"
> all = string.maketrans('', '')
> not_allowed = ''.join(c for c in all if c not in allowed)
> table = string.maketrans(not_allowed, ' '*len(not_allowed))
> new_string = string.translate(old_string, table)

Nice, I did not know that string translation exists, but
Abandoned have defined allowed characters, so making
a translation table for the unallowed characters,
which would take nearly complete unicode character table
would be inefficient.



From whamil1 at entergy.com  Mon Oct  8 11:11:20 2007
From: whamil1 at entergy.com (Hamilton, William )
Date: Mon, 8 Oct 2007 10:11:20 -0500
Subject: tkinter question
In-Reply-To: <470904AC.9090100@codebykevin.com>
Message-ID: <588D53831C701746A2DF46E365C018CE01D2CB6C@LITEXETSP001.etrsouth.corp.entergy.com>

> -----Original Message-----
> From: Kevin Walzer
> 
> See
http://www.codebykevin.com/blosxom/business/phynchronicity-new.png:
> this is an application I develop. The layout is all handled by "pack"
> and paned windows. Where you you use "grid" in a layout like this?
> 

I'd use a three row grid, with the middle row containing a frame with
another grid in it.  I don't try to create a single massive grid that
manages everything, I break it up into subgrids of related widgets.

--
-Bill Hamilton


From nospamformeSVP at gmail.com  Sat Oct  6 11:21:19 2007
From: nospamformeSVP at gmail.com (Don Taylor)
Date: Sat, 06 Oct 2007 11:21:19 -0400
Subject: How to do transparent (opaque) windows from Python
Message-ID: <fe895s$buo$1@sea.gmane.org>

I want to build an application in Python that can show an opaque window 
so that you can still see and type into any window that it covers.

Sort of like a software mylar transparency sheet placed over the screen. 
  I need to be able to type 'through' the transparency into the 
underlying application, focus remains on the underlying window.

My application is assisted typing, but I can envisage other uses such as 
  on-screen rulers.

While I would like this to be multi-platform, I need it in MS-Windows.

Does anyone know of any Python packages that can do this type of thing?

Thanks,

Don.



From robert.kern at gmail.com  Tue Oct 16 18:18:51 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 16 Oct 2007 17:18:51 -0500
Subject: negative base raised to fractional exponent
In-Reply-To: <ff3cfd$qh8$1@ger.gmane.org>
References: <1192571332.470809.279160@v23g2000prn.googlegroups.com>
	<ff3cfd$qh8$1@ger.gmane.org>
Message-ID: <ff3dcg$t3b$2@ger.gmane.org>

Steve Holden wrote:
> schaefer.mp at gmail.com wrote:
>> Does anyone know of an approximation to raising a negative base to a
>> fractional exponent? For example, (-3)^-4.11111 since this cannot be
>> computed without using imaginary numbers. Any help is appreciated.
>>
> A couple of questions.
> 
> 1. How do you approximate a complex number in the reals? That doesn't 
> make sense.
> 
> 2. x ^ -4.1111 = 1 / (x ^ 4.1111), so where do complex numbers enter 
> into this anyway?

When *x* is negative and the exponent is fractional.

-- 
Robert Kern

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



From grante at visi.com  Fri Oct 12 17:48:21 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 21:48:21 -0000
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
	<feom4s$l0h$1@solaris.cc.vt.edu>
	<13gvndj3ebgfh98@corp.supernews.com>
	<feon0m$m0k$1@solaris.cc.vt.edu>
Message-ID: <13gvqt5fpnfahc1@corp.supernews.com>

On 2007-10-12, brad <byte8bits at gmail.com> wrote:
> Grant Edwards wrote:
>
>> If you send an e-mail to an address and you get a response,
>> then it's valid.
>
> No response could be valid too.

Right.  A->B doesn't mean that !A -> !B

-- 
Grant Edwards                   grante             Yow! Did I do an INCORRECT
                                  at               THING??
                               visi.com            


From mccredie at gmail.com  Thu Oct 11 13:55:25 2007
From: mccredie at gmail.com (Matimus)
Date: Thu, 11 Oct 2007 17:55:25 -0000
Subject: Python process automatically restarting itself
In-Reply-To: <1192112232.409272.174030@50g2000hsm.googlegroups.com>
References: <1192112232.409272.174030@50g2000hsm.googlegroups.com>
Message-ID: <1192125325.844959.275410@50g2000hsm.googlegroups.com>

On Oct 11, 7:17 am, Adam Atlas <a... at atlas.st> wrote:
> What is the best way for a Python process (presumed to be a script run
> by the interpreter binary, not embedded in some other program) to
> restart itself? This is what I've been trying:
>
>     import __main__
>
>     for path in sys.path:
>         path += '/' + __main__.__file__
>         if os.access(path, os.F_OK): break
>     else:
>         raise Exception('WTF?')
>
>     #Then, something like...
>     os.execl(sys.executable, sys.executable, path, *sys.argv[1:])
>
> BUT! This is a multi-threaded program, and at least on OS X, trying to
> exec*() in a threaded process raises OSError [Errno 45] Operation not
> supported. So I tried having it fork, and having the child process
> wait for the parent process to die (in various ways) and then exec*().
> That seemed to work, sort of, but the child would not be attached to
> the original terminal, which is a must.
>
> Any ideas?

sys.path is the search path that Python uses for finding modules, and
probably isn't what you wanted. Also, it is bad practice to hard code
the file separator. In general you will want to do this:

import os.path
path = os.path.join(path, filename)

which will automatically insert the correct separator for the os you
are using.

That is moot though, since I think this is a better solution:

import os.path, __main__
path = os.path.abspath(__main__.__file__)

That isn't really necessary though. In fact, I think restarting the
process using exec* is the wrong way to go. I would simply encapsulate
my program inside of a function, set a restart flag, return from said
function and restart if the flag was set.

Something like this:

restart = False
def main():
  # do my stuff

  if need_to_restart:
    global restart
    restart = True

    #do clean-up (shut down threads, etc.)
    return retval

if __name__ == "__main__":
  retval = main()
  while restart:
    restart = False
    retval = main()
  sys.exit(retval)

I suppose there are reasons that you might want to restart the
process. Most of the time you are going to want to do something like
what I suggested though. And even in those other cases, you probably
want to use the subprocess module instead of an exec* function.

Matt



From jcd at sdf.lonestar.org  Mon Oct  8 16:25:58 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 8 Oct 2007 16:25:58 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191874404.292250.87130@y42g2000hsy.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
Message-ID: <20071008202558.GB967@sdf.lonestar.org>

On Mon, Oct 08, 2007 at 01:13:24PM -0700, mensanator at aol.com wrote regarding Re: pytz has so many timezones!:
> 
> On Oct 8, 1:03 pm, Carsten Haese <cars... at uniqsys.com> wrote:
> > On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com wrote:
> > > For example, Windows has seperate listings for
> >
> > > Central America
> > > Central Time (US & Canada)
> > > Guadalahara, Mexico City, Monterry - New
> > > Guadalahara, Mexico City, Monterry - Old
> > > Saskatchewan
> >
> > > but they are all GMT-6
> >
> > But they could have different rules for Daylight Saving Time.
> 
> Which only matters if you're setting your clock.
> 

Maybe this is where I'm not understanding you:  Do you have another use for setting a timezone?  The only thing a time zone does, as far as I can tell, is set clocks relative to a shared conception of time.




From deets at nospam.web.de  Tue Oct 30 14:32:22 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 30 Oct 2007 19:32:22 +0100
Subject: Parsing xml file in python
In-Reply-To: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
References: <1193768271.521945.109230@t8g2000prg.googlegroups.com>
Message-ID: <5opbmcFo3an1U1@mid.uni-berlin.de>

amjadcsu at gmail.com schrieb:
> I am a newbie in python
> I am trying to parse a xml file and write its content in a txt file.
> The txt contains null elements. Any reason what  iam doing wrong here
> 
> 
> Here is the code that i wrote
> 
> import sys,os
> import xml.sax
> import xml.sax.handler
> from xml.sax.handler import ContentHandler
> from xml.sax import make_parser
> 
> class gmondxmlparse (ContentHandler):
> 
>     def __init__(self,searchTerm):
>         self.searchTerm=searchTerm;
> 
>     def startElement(self,name,attrs):
> 
>         if name=="HOST":
>             self.hostname=attrs.get('NAME',"")
>             self.IP=attrs.get('IP',"")
>         elif name=="METRIC":
>             self.metricname=attrs.get('NAME', "")
>             self.metricvalue=attrs.get('VAL',"")
>             self.metrictype=attrs.get('TYPE',"")
>             self.metricunit=attrs.get('UNITS',"")
>         return
> 
>     def endElement(self,name):
>         if name=="HOST" and self.searchTerm==self.hostname:
>             try:
>                 fh=open('/root/yhpc-2.0/ganglia.txt' ,'w')
>             except:
>                 print "File /root/yhpc-2.0/ganglia.txt can not be
> open"
>                 sys.exit(1)
>             fh.write("This is a test for xml parsing with python with
> chris and amjad \n")
>             fh.write("the host name is", self.hostname, "\n")
>             fh.write("the ip address is", self.IP, "\n")
>             fh.close()
> 
> searchTerm="HOST"
> parser=make_parser()
> curHandler=gmondxmlparse(searchTerm)
> parser.setContentHandler(curHandler)
> parser.parse(open("/root/yhpc-2.0/gmond.xml"))
> 
> 
> Here is the sample of xml file
> 
> Here is the  xmk file called gmond.xml
> <HOST NAME="192.168.10.163" IP="192.168.10.163" REPORTED="1193689455"
> TN="0" TMAX="20" DMAX="0" LOCATION="unspecified"
> GMOND_STARTED="1193170061">
> <METRIC NAME="cpu_num" VAL="2" TYPE="uint16" UNITS="CPUs" TN="994"
> TMAX="1200" DMAX="0" SLOPE="zero" SOURCE="gmond"/>
> 

Without an actual error given, it's hard to know what your problem is.

One thing though is noticable: your XML below isn't valid - XML has only 
one root-element.

And just for the record: it appears that you work under linux using a 
root-account. Bad idea. Really.

http://linuxbraindump.org/2007/08/13/the-10-commandments-for-new-linux-users/

Diez


From deets at nospam.web.de  Mon Oct  1 09:33:40 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 01 Oct 2007 15:33:40 +0200
Subject: How popular is Django ?
References: <1191245034.626711.306380@19g2000hsx.googlegroups.com>
Message-ID: <5mcb9jFcotijU2@mid.uni-berlin.de>

 seb.haase at gmail.com wrote:

> Hi!
> 
> I was surprised when I did a google-groups search for python,
> (
> http://groups.google.com/groups/search?q=python&qt_s=Search+Groups
> )
> it shows these groups:
> comp.lang.python  with about 11000 users,
> and second,
> Django users
> Discussion group for Django users. Django is a high-level Python
> Web ...
> 
> with 6500 members !!!!
> 
> I cannot believe that django is *that* popular ... where am I going
> wrong ?

By assuming that readers of this group (or ML) are a superset of the
django-users. 

Diez


From mail at ozzmosis.com  Mon Oct  8 14:31:00 2007
From: mail at ozzmosis.com (andrew clarke)
Date: Tue, 9 Oct 2007 04:31:00 +1000
Subject: pytz has so many timezones!
In-Reply-To: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
Message-ID: <20071008183100.GA7850@ozzmosis.com>

On Mon, Oct 08, 2007 at 12:32:19AM -0700, Sanjay wrote:

> I am using pytz.common_timezones to populate the timezone combo box of
> some user registration form. But as it has so many timezones (around
> 400), it is a bit confusing to the users. Is there a smaller and more
> practical set? If not, some suggestions on how to handle the
> registration form effectively would help me a lot.

Use something like:

for zone in common_timezones:
  continent, region = zone.split('/')

Then have two list boxes, one for the continent and the other for the region.

[Australia              ]

[Melbourne              ]

('Continent' is probably not the right word.)

Regards
Andrew


From Caseyweb at gmail.com  Thu Oct  4 17:57:41 2007
From: Caseyweb at gmail.com (Casey)
Date: Thu, 04 Oct 2007 21:57:41 -0000
Subject: Is there a nicer way to do this?
In-Reply-To: <1191534175.791249.314280@w3g2000hsg.googlegroups.com>
References: <87ejgawpug.fsf@keizer.soze.com>
	<1191534175.791249.314280@w3g2000hsg.googlegroups.com>
Message-ID: <1191535061.043590.285880@y42g2000hsy.googlegroups.com>

On Oct 4, 5:42 pm, Casey <Casey... at gmail.com> wrote:
> Not sure if this is really better or even more pythonic, but if you
> like one-liners that exercise the language:

Hmm, I guess it WAS more pythonic, since three of us gave essentially
identical responses in a 10-minute period.  That being said, I'd
recommend a good comment before the one-liner describing what the
output dictionary is going to look like. Anyone who reads your code
(including yourself, two weeks later) will thank you!



From jusa.sj at gmail.com  Sat Oct 13 04:01:31 2007
From: jusa.sj at gmail.com (Juha S.)
Date: Sat, 13 Oct 2007 11:01:31 +0300
Subject: Foreign Character Problems In Python 2.5 and Tkinter
Message-ID: <47107B5B.5030602@gmail.com>

Hi,

I'm writing a small text editor type application with Python 2.5 and 
Tkinter. I'm using the Tk text widget for input and output, and the 
problem is that when I try to save its contents to a .txt file, any 
Scandinavian letters such as "??? ???" are saved incorrectly and show up 
as a mess when I open the .txt file in Windows Notepad.

It seems that the characters will only get mixed if the user has typed 
them into the widget, but if the program has outputted them, they are 
saved correctly.

The function that is saving the file is as follows:

try:
file = open(self.currentSaveFile, 'w+')
file.write(self.text.get(0.0, END))
except IOError:
tkMessageBox.showwarning('Save File', 'An error occurred while trying to 
save \"' + self.currentSaveFile + '\"', parent=self.frame)
finally:
file.close()

Sometimes its output in the file is "?????? ??????" for "??? ???" and 
sometimes it gives me the error: "UnicodeEncodeError: 'ascii' codec 
can't encode characters in position 33-35: ordinal not in range(128)"


I have tried changing it to:

try:
file = codecs.open(savefilename, 'w+', 'utf-8', 'ignore')
file.write(unicode(self.text.get(0.0, END), 'utf-8', 'ignore'))
self.currentSaveFile = savefilename
except IOError:
tkMessageBox.showwarning('Save File', 'An error occurred while trying to 
save \"' + self.currentSaveFile + '\"', parent=self.frame)
finally:
file.close()

Which does save the user-typed characters correctly, but loses any 
newlines and "???" characters outputted by the program.

I have no idea how solve this problem, and would appreciate any help.


From rcdailey at gmail.com  Thu Oct  4 11:58:35 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 4 Oct 2007 10:58:35 -0500
Subject: RegEx question
In-Reply-To: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
References: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>
Message-ID: <496954360710040858w6226424fi299f8a57ed29e72@mail.gmail.com>

It should also match:

@param[out] state Some description of this variable


On 10/4/07, Robert Dailey <rcdailey at gmail.com> wrote:
>
> Hi,
>
> The following regex (Not including the end quotes):
>
> "@param\[in|out\] \w+ "
>
> Should match any of the following:
>
> @param[in] variable
> @param[out] state
> @param[in] foo
> @param[out] bar
>
>
> Correct? (Note the trailing whitespace in the regex as well as in the
> examples)
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/4eed5479/attachment.html>

From MrJean1 at gmail.com  Mon Oct 29 15:06:15 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Mon, 29 Oct 2007 19:06:15 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
Message-ID: <1193684775.643350.208230@y27g2000pre.googlegroups.com>

Building 64-bit Python is still elusive. I tried various ways to add  -
xtarget=opteron -xarch-amd64  to the C/C++ flags but that still fails
to produce a 64-bit build.  Changing the Makefile is not sufficient
since that causes compilation errors.

It looks like the ./configure command must run with those additional
flags.  Passing the flags in environment variables defining CC and CXX
only works for CXX.  The additional flags do not appear on the C
compiler command lines.

/Jean Brouwers



On Oct 28, 11:03 pm, plumb and tree <plumbandt... at gmail.com> wrote:
> I've been trying for days to build 64 bit python with Solaris 10 + Sun
> Studio 12.
>
> Can anyone helpl please.
>
> This is how I tried to do build:
>
> # ./configure --prefix=/opt/python2.4 --without-gcc --enable-shared
> checking MACHDEP... sunos5
> checking EXTRAPLATDIR...
> checking for --without-gcc... yes
> checking for --with-cxx=<compiler>... no
> checking for c++... /opt/SUNWspro/bin/CC
> checking for C++ compiler default output file name... a.out
> checking whether the C++ compiler works... yes
> checking whether we are cross compiling... no
> checking for suffix of executables...
> checking for gcc... cc
> checking for C compiler default output file name... a.out
> checking whether the C compiler works... yes
> checking whether we are cross compiling... no
> checking for suffix of executables...
> checking for suffix of object files... o
> checking whether we are using the GNU C compiler... no
> checking whether cc accepts -g... yes
> checking for cc option to accept ANSI C... none needed
> checking how to run the C preprocessor... /opt/SUNWspro/bin/CC
> configure: error: C preprocessor "/opt/SUNWspro/bin/CC" fails sanity
> check
> See `config.log' for more details.
>
> (sorry for the long log file but I'm not sure which part are
> important)
> config.log:
> This file contains any messages produced by compilers while
> running configure, to aid debugging if configure makes a mistake.
>
> It was created by python configure 2.4, which was
> generated by GNU Autoconf 2.59.  Invocation command line was
>
>   $ ./configure --prefix=/opt/python2.4 --without-gcc --enable-shared
>
> ## --------- ##
> ## Platform. ##
> ## --------- ##
>
> hostname = zone2
> uname -m = sun4u
> uname -r = 5.10
> uname -s = SunOS
> uname -v = Generic_118833-36
>
> /usr/bin/uname -p = sparc
> /bin/uname -X     = System = SunOS
> Node = zone2
> Release = 5.10
> KernelID = Generic_118833-36
> Machine = sun4u
> BusType = <unknown>
> Serial = <unknown>
> Users = <unknown>
> OEM# = 0
> Origin# = 1
> NumCPU = 1
>
> /bin/arch              = sun4
> /usr/bin/arch -k       = sun4u
> /usr/convex/getsysinfo = unknown
> hostinfo               = unknown
> /bin/machine           = unknown
> /usr/bin/oslevel       = unknown
> /bin/universe          = unknown
>
> PATH: /usr/local/bin
> PATH: /usr/xpg4/bin
> PATH: /usr/sfw/bin
> PATH: /opt/SUNWspro/bin
> PATH: /usr/local/mysql/bin
> PATH: /usr/ccs/bin
> PATH: /usr/local/bin
> PATH: /usr/xpg4/bin
> PATH: /usr/sfw/bin
> PATH: /opt/SUNWspro/bin
> PATH: /usr/local/mysql/bin
> PATH: /usr/ccs/bin
> PATH: /usr/local/bin
> PATH: /usr/xpg4/bin
> PATH: /usr/sfw/bin
> PATH: /opt/SUNWspro/bin
> PATH: /usr/local/mysql/bin
> PATH: /usr/ccs/bin
> PATH: /usr/sbin
> PATH: /usr/bin
> PATH: /usr/openwin/bin
> PATH: /usr/sfw/bin
> PATH: /usr/openwin/bin
> PATH: /usr/sfw/bin
> PATH: /usr/openwin/bin
> PATH: /usr/sfw/bin
>
> ## ----------- ##
> ## Core tests. ##
> ## ----------- ##
>
> configure:1510: checking MACHDEP
> configure:1655: result: sunos5
> configure:1661: checking EXTRAPLATDIR
> configure:1676: result:
> configure:1697: checking for --without-gcc
> configure:1746: result: yes
> configure:1752: checking for --with-cxx=<compiler>
> configure:1773: result: no
> configure:1792: checking for c++
> configure:1818: result: /opt/SUNWspro/bin/CC
> configure:1858: checking for C++ compiler default output file name
> configure:1861: /opt/SUNWspro/bin/CC   -L/opt/SUNWmlib/lib -lrt -lm
> conftest.cc  >&5
> configure:1864: $? = 0
> configure:1910: result: a.out
> configure:1915: checking whether the C++ compiler works
> configure:1921: ./a.out
> configure:1924: $? = 0
> configure:1941: result: yes
> configure:1948: checking whether we are cross compiling
> configure:1950: result: no
> configure:1953: checking for suffix of executables
> configure:1955: /opt/SUNWspro/bin/CC -o conftest   -L/opt/SUNWmlib/lib
> -lrt -lm conftest.cc  >&5
> configure:1958: $? = 0
> configure:1983: result:
> configure:2057: checking for gcc
> configure:2083: result: cc
> configure:2327: checking for C compiler version
> configure:2330: cc -V </dev/null >&5
> cc: Sun C 5.9 SunOS_sparc Patch 124867-01 2007/07/12
> usage: cc [ options] files.  Use 'cc -flags' for details
> configure:2333: $? = 1
> configure:2356: checking for C compiler default output file name
> configure:2359: cc -O2  -L/opt/SUNWmlib/lib -lrt -lm conftest.c  >&5
> configure:2362: $? = 0
> configure:2408: result: a.out
> configure:2413: checking whether the C compiler works
> configure:2419: ./a.out
> configure:2422: $? = 0
> configure:2439: result: yes
> configure:2446: checking whether we are cross compiling
> configure:2448: result: no
> configure:2451: checking for suffix of executables
> configure:2453: cc -o conftest -O2  -L/opt/SUNWmlib/lib -lrt -lm
> conftest.c  >&5
> configure:2456: $? = 0
> configure:2481: result:
> configure:2487: checking for suffix of object files
> configure:2508: cc -c -O2  conftest.c >&5
> configure:2511: $? = 0
> configure:2533: result: o
> configure:2537: checking whether we are using the GNU C compiler
> configure:2561: cc -c -O2  conftest.c >&5
> "conftest.c", line 15: undefined symbol: choke
> "conftest.c", line 15: syntax error before or at: me
> cc: acomp failed for conftest.c
> configure:2567: $? = 2
> configure: failed program was:
> | /* confdefs.h.  */
> |
> | #define _GNU_SOURCE 1
> | #define _NETBSD_SOURCE 1
> | #define __BSD_VISIBLE 1
> | #define _BSD_TYPES 1
> | #define _XOPEN_SOURCE 500
> | #define _POSIX_C_SOURCE 200112L
> | /* end confdefs.h.  */
> |
> | int
> | main ()
> | {
> | #ifndef __GNUC__
> |        choke me
> | #endif
> |
> |   ;
> |   return 0;
> | }
> configure:2593: result: no
> configure:2599: checking whether cc accepts -g
> configure:2620: cc -c -g  conftest.c >&5
> configure:2626: $? = 0
> configure:2630: test -z
>                          || test ! -s conftest.err
> configure:2633: $? = 0
> configure:2636: test -s conftest.o
> configure:2639: $? = 0
> configure:2650: result: yes
> configure:2667: checking for cc option to accept ANSI C
> configure:2737: cc  -c -O2  conftest.c >&5
> "conftest.c", line 53: warning: statement not reached
> configure:2743: $? = 0
> configure:2747: test -z
>                          || test ! -s conftest.err
> configure:2750: $? = 0
> configure:2753: test -s conftest.o
> configure:2756: $? = 0
> configure:2774: result: none needed
> configure:2792: cc -c -O2  conftest.c >&5
> "conftest.c", line 2: warning: old-style declaration or incorrect type
> for: choke
> "conftest.c", line 2: syntax error before or at: me
> "conftest.c", line 3: warning: old-style declaration or incorrect type
> for: me
> cc: acomp failed for conftest.c
> configure:2798: $? = 2
> configure: failed program was:
> | #ifndef __cplusplus
> |   choke me
> | #endif
> configure:2939: checking how to run the C preprocessor
> configure:3057: result: /opt/SUNWspro/bin/CC
> configure:3081: /opt/SUNWspro/bin/CC  conftest.c
> "conftest.c", line 15: Error: Syntax is not defined.
> "conftest.c", line 15: Error: "," expected instead of "end of file".
> "conftest.c", line 15: Error: Use ";" to terminate declarations.
> 3 Error(s) detected.
> configure:3087: $? = 3
> configure: failed program was:
> | /* confdefs.h.  */
> |
> | #define _GNU_SOURCE 1
> | #define _NETBSD_SOURCE 1
> | #define __BSD_VISIBLE 1
> | #define _BSD_TYPES 1
> | #define _XOPEN_SOURCE 500
> | #define _POSIX_C_SOURCE 200112L
> | /* end confdefs.h.  */
> | #ifdef __STDC__
> | # include <limits.h>
> | #else
> | # include <assert.h>
> | #endif
> |                    Syntax error
> configure:3081: /opt/SUNWspro/bin/CC  conftest.c
> "conftest.c", line 15: Error: Syntax is not defined.
> "conftest.c", line 15: Error: "," expected instead of "end of file".
> "conftest.c", line 15: Error: Use ";" to terminate declarations.
> 3 Error(s) detected.
> configure:3087: $? = 3
> configure: failed program was:
> | /* confdefs.h.  */
> |
> | #define _GNU_SOURCE 1
> | #define _NETBSD_SOURCE 1
> | #define __BSD_VISIBLE 1
> | #define _BSD_TYPES 1
> | #define _XOPEN_SOURCE 500
> | #define _POSIX_C_SOURCE 200112L
> | /* end confdefs.h.  */
> | #ifdef __STDC__
> | # include <limits.h>
> | #else
> | # include <assert.h>
> | #endif
> |                    Syntax error
> configure:3156: error: C preprocessor "/opt/SUNWspro/bin/CC" fails
> sanity check
> See `config.log' for more details.
>
> ## ---------------- ##
> ## Cache variables. ##
> ## ---------------- ##
>
> ac_cv_c_compiler_gnu=no
> ac_cv_env_CC_set=set
> ac_cv_env_CC_value=/opt/SUNWspro/bin/cc
> ac_cv_env_CFLAGS_set=set
> ac_cv_env_CFLAGS_value=-O2
> ac_cv_env_CPPFLAGS_set=set
> ac_cv_env_CPPFLAGS_value=
> ac_cv_env_CPP_set=set
> ac_cv_env_CPP_value=/opt/SUNWspro/bin/CC
> ac_cv_env_LDFLAGS_set=set
> ac_cv_env_LDFLAGS_value='-L/opt/SUNWmlib/lib -lrt -lm'
> ac_cv_env_build_alias_set=
> ac_cv_env_build_alias_value=
> ac_cv_env_host_alias_set=
> ac_cv_env_host_alias_value=
> ac_cv_env_target_alias_set=
> ac_cv_env_target_alias_value=
> ac_cv_exeext=
> ac_cv_objext=o
> ac_cv_prog_CPP=/opt/SUNWspro/bin/CC
> ac_cv_prog_CXX=/opt/SUNWspro/bin/CC
> ac_cv_prog_ac_ct_CC=cc
> ac_cv_prog_cc_g=yes
> ac_cv_prog_cc_stdc=
>
> ## ----------------- ##
> ## Output variables. ##
> ## ----------------- ##
>
> AR=''
> BASECFLAGS='-# -xc99=all,lib -m64 -H -Xc -c -errtags=yes'
> BLDLIBRARY=''
> BLDSHARED=''
> BUILDEXEEXT=''
> CC='cc'
> CCSHARED=''
> CFLAGS='-O2'
> CFLAGSFORSHARED=''
> CONFIGURE_MACOSX_DEPLOYMENT_TARGET=''
> CONFIG_ARGS=''--prefix=/opt/python2.4' '--without-gcc' '--enable-
> shared' 'CC=/opt/SUNWspro/bin/cc' 'CFLAGS=-O2' 'CPPFLAGS=' 'CPP=/opt/
> SUNWspro/bin/CC' 'LDFLAGS=-L/opt/SUNWmlib/lib -lrt -lm''
> CPP='/opt/SUNWspro/bin/CC'
> CPPFLAGS=''
> CXX='/opt/SUNWspro/bin/CC'
> DEFS=''
> DLINCLDIR=''
> DLLLIBRARY=''
> DYNLOADFILE=''
> ECHO_C=''
> ECHO_N='-n'
> ECHO_T=''
> EGREP=''
> EXEEXT=''
> EXPORT_MACOSX_DEPLOYMENT_TARGET='#'
> EXTRAMACHDEPPATH=''
> EXTRAPLATDIR=''
> FRAMEWORKALTINSTALLFIRST=''
> FRAMEWORKALTINSTALLLAST=''
> FRAMEWORKINSTALLFIRST=''
> FRAMEWORKINSTALLLAST=''
> FRAMEWORKUNIXTOOLSPREFIX='/opt/python2.4'
> HAVE_GETHOSTBYNAME=''
> HAVE_GETHOSTBYNAME_R=''
> HAVE_GETHOSTBYNAME_R_3_ARG=''
> HAVE_GETHOSTBYNAME_R_5_ARG=''
> HAVE_GETHOSTBYNAME_R_6_ARG=''
> INSTALL_DATA=''
> INSTALL_PROGRAM=''
> INSTALL_SCRIPT=''
> INSTSONAME=''
> LDFLAGS='-L/opt/SUNWmlib/lib -lrt -lm'
> LDLAST=''
> LDLIBRARY=''
> LDLIBRARYDIR=''
> LDSHARED=''
> LIBC=''
> LIBM=''
> LIBOBJS=''
> LIBRARY=''
> LIBS=''
> LIBTOOL_CRUFT=''
> LINKCC=''
> LINKFORSHARED=''
> LN=''
> LTLIBOBJS=''
> MACHDEP='sunos5'
> MACHDEP_OBJS=''
> MAINOBJ='python.o'
> OBJEXT='o'
> OPT=''
> OTHER_LIBTOOL_OPT=''
> PACKAGE_BUGREPORT='http://www.python.org/python-bugs'
> PACKAGE_NAME='python'
> PACKAGE_STRING='python 2.4'...
>
> read more ?




From horpner at yahoo.com  Thu Oct  4 14:23:31 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Thu, 04 Oct 2007 18:23:31 GMT
Subject: What does the syntax [::-1] really mean?
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>
Message-ID: <DcaNi.38884$G23.3563@newsreading01.news.tds.net>

On 2007-10-04, Casey <Caseyweb at gmail.com> wrote:
> I've used [::-1] as a shorthand for reverse on several occasions, but
> it occurred to me yesterday I never really thought about why it
> works.  First, I checked out the documentation.
>
>>From section 3.6 of the Python Library Reference:
>
> "The slice of s from i to j with step k is defined as the
> sequence of items with index x = i + n*k such that 0 <= n <
> (j-i)/k. In other words, the indices are i, i+k, i+2*k, i+3*k
> and so on, stopping when j is reached (but never including j).
> If i or j  is greater than len(s), use len(s). If i or j are
> omitted or None, they become ``end'' values (which end depends
> on the sign of k). Note, k cannot be zero. If k is None, it is
> treated like 1."

You just have to choose the right value for the end arguments.
With k negative, the result might be:

  [-1:-len(s)-1:k]

I.e., from -1 (the last element) to one beyond the first element
(-len(s)-1). A negative index seems to be the only way to refer
to the element before the first element.

In that case the forumula given above does yield the reverse
sequence.

For example, for len(s) of 3, you get, you would get the
following sequence of indices:

  i = -1, j = -4, k = -1

  -1 + -1 = -2
  -1 + 2*(-1) = -3
  -1 + 3*(-1) = -4

-4 is equal to j, so the sequence ends with s[-3].

> From this, I would expect that x[::-1] would be identical to
> x[n:0:-1] (n and 0 being the "end" values, with the order
> switched due to the negative step value).  But the clause that
> "(but never including j)" means that x[n:0:-1] excludes the 1st
> element of x, x[0].  A quick test in ipython confirms that
> "abc"[3:0:-1] => "cb", not "cba". Changing the "end" value  to
> x[n:-1:-1] results in an empty string.

Your proposed sequence, x[n:0:-1] is half-open on the wrong end.
When k is -1 then j must also be negative. This is because
there's no way to refer to the element one before the first
element without using a negative index value for j.

-- 
Neil Cerutti


From omouse at gmail.com  Sun Oct 21 10:56:10 2007
From: omouse at gmail.com (OMouse)
Date: Sun, 21 Oct 2007 14:56:10 -0000
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
Message-ID: <1192978570.098588.276310@v23g2000prn.googlegroups.com>

For the love of the Perl, Python, Lisp, Java and functional
programmers, please just give an abstract of what you've written and
link to it?

-Rudolf



From tjreedy at udel.edu  Fri Oct  5 19:54:20 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 5 Oct 2007 19:54:20 -0400
Subject: Python Magazine: Issue 1 Free!
References: <fe583c$4kj$1@sea.gmane.org>
Message-ID: <fe6ird$jft$1@sea.gmane.org>


"Steve Holden" <steve at holdenweb.com> wrote in message 
news:fe583c$4kj$1 at sea.gmane.org...
| I've just been told by the editors at Python Magazine that the first
| issue is out. It's all-electronic so anyone can download and read it.
| Let them know what you think:
|
|   http://www.pythonmagazine.com/c/issue/2007/10

OK.  Given that my (widescreen) monitor, like most current monitors, does 
not rotate into the portrait mode that would display a whole page, double 
column pdf files are painful to read on a screen.  Up and down, up and 
down.  And the color pages cannot be sensibly printed  on a b/w printer, 
even if I wanted to go to paper (which is what pdf was meant for), which I 
do not.  Mismatching electronic documents to the screens they are most 
commonly read on is to me at least shortsighted.  So I suggest that you 
also produce a readable html version. 





From dfabrizio51 at gmail.com  Sat Oct 27 11:11:00 2007
From: dfabrizio51 at gmail.com (chewie54)
Date: Sat, 27 Oct 2007 15:11:00 -0000
Subject: good example of C extension for Mac OS X
Message-ID: <1193497860.746202.111240@o38g2000hse.googlegroups.com>

Hi All,

Does anyone now of a good example to use as template for a  C program
extension that needs to be built on the Mac OS X.

Thanks,



From lasses_weil at klapptsowieso.net  Mon Oct  1 17:37:28 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Mon, 01 Oct 2007 23:37:28 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fdlat6$c5f$03$1@news.t-online.com>
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
Message-ID: <47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>

Frank Goenninger wrote:
> On 2007-09-29 01:27:04 +0200, Damien Kick <dkixk at earthlink.net> said:
> 
>> If you were referring to the "free" in "free Mumia Abu Jamal", I would 
>> agree with you.  I don't think anyone would imagine that this phrase 
>> meant that someone was going to get Mumia Abu Jamal gratis.  Like it 
>> or not, "free software" referring to "free as in beer" is probably the 
>> most common interpretation of the phrase for a native English speaker. 
>> Admittedly, I do not have a "scientific" survey handy.  However, I 
>> just asked my wife--who has absolutely no interest in anything related 
>> to programming, has never heard of the FSF, Eric Raymond, nor the 
>> disagreement between those two camps, nor probably will she ever have 
>> an interest--what she thinks I mean when I say "free software".  After 
>> getting over the "why are you asking such a stupid question" phase, 
>> the first thing that jumped to her mind was "free as in beer".  You 
>> can stamp, growl, swagger, spit, curse, and bluster all you want on 
>> this point, but millions of English speakers are going to ignore you 
>> anyway.   Lucky for most of them, they do not have to suffer the 
>> lectures of sociopolitically motivated language mavens trying to 
>> "correct" them from the error of mistaking the meaning of a phrase to 
>> be the normal meaning of that phrase.
> 
> Fully true for non-native English speakers as well. Just did the "wife 
> test" also - she is a pure software user - and yes, free is "no money, 
> do what you want" and that's it.
> 
> I *never* use the term "free" if I don't want to imply "free beer" 
> (which is a Good Thing and as such highly valuated - ask any Bavarian). 
> Using "free" as by FSF or any other lawyer-style 6 pixel font printed 
> phrasing is pure perfidiousness.
> 
I appearantly missed a lot of that conversation, but what is your point? 
While I agree that the word "free" implies "free of monetary cost" to 
many people societies, that is by no means set in stone (talk to native 
americans, blacks, jews, palestinians, etc. about the word free, see 
what they have to say).

But that aside: The word free with respect to the FSF and GPL have a 
perfectly well defined meaning. People may misunderstand that from not 
knowing the definition but that doesnt make it any less well defined.

Again, why this discussion?
/W


From anandology at gmail.com  Tue Oct 30 23:36:34 2007
From: anandology at gmail.com (Anand)
Date: Wed, 31 Oct 2007 03:36:34 -0000
Subject: object inheritance
In-Reply-To: <Xns99D59713BE0FAduncanbooth@127.0.0.1>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
	<Xns99D59713BE0FAduncanbooth@127.0.0.1>
Message-ID: <1193801794.225829.82490@i13g2000prf.googlegroups.com>


> No, that is an argument for multiple-inheritance, mixin classes etc. You
> know when constructing the object what behaviour you want it to have. It
> isn't an argument for changing the behaviour of an existing object
> dynamically.


Partially true. I don't want to change the behavior of an exiting
object. I know what behavior I want to have at the time of creating.
This can be achieved by creating classes dynamically by parameterizing
the base class, which I thought is ugly.

>
> for an example where it is useful to extend the behaviour of objects have a
> look at Zope3 interfaces and adaptors: an object can be defined to
> implement one or more interfaces, and you can associate additional
> interfaces with objects at runtime. Sometimes an object will implement an
> interface directly, but often the implementation is taken out into a
> separate 'adaptor' class. Whenever you want to use a specified interface on
> an object you simply use the interface class as a constructor on the
> object, and that might find the appropriate adapter or it might just return
> the original object if the interface is provided directly.
>
> e.g. seehttp://plone.org/documentation/tutorial/five-zope3-walkthrough

Interesting!

> Note that this is very different than the forwarding mechanism which
> started this thread: when you use an adaptor you get something which
> implements just the specified interface, you don't have to worry about
> conflicting names for methods or attributes. Also you can have a common
> interface associated with objects which have completely different adapters
> implementing that interface.

It is not a simple one-way forwarding mechanism. It is two-way.

An example:

class SimpleDB(Extend):
    def withID(self, id):
        # do query

    def withIDs(self, ids):
        return [self.withID(id) for id in ids]

class CachedDB(Extend):
    def withID(self, id):
        if id not in self.cache:
            self.cache[id] = self.super_withID(id)
        return self.cache[id]


db = CachedDB(SimpleDB())

When I call db.withIDs, it should make use of the cache, which I think
is not possible with a simple forwarding mechanism.



From vmaslov at swsoft.com  Mon Oct  1 06:56:02 2007
From: vmaslov at swsoft.com (Vyacheslav Maslov)
Date: Mon, 01 Oct 2007 17:56:02 +0700
Subject: reliable unit test logging
Message-ID: <4700D242.3030709@swsoft.com>

Hi all!

I have many many many python unit test, which are used for testing some 
remote web service.

The most important issue here is logging of test execution process and 
result. I strongly need following:
1. start/end timestamp for each test case (most important)
2. immediate report about exceptions (stacktrace)
3. it will be nice to use logging module for output

I have investigated some extension for standard unittest module, e.g. 
testoob, nose, etc. They have very nice features but they does not 
satisfy first requirement in my list - test execution logs not doesn't 
contain timestamps.

Can someone explain my why so simple feature like logging of timestamps 
during test execution was not implemented in any extension?

Also i need some advices about how i can implement timestamps logging 
myself. I think proper way is develop customized TextTestRunner and use 
logging module instead of "print"s. Is it right way or there is more simply?



From heikki at osafoundation.org  Fri Oct  5 19:20:18 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Fri, 05 Oct 2007 16:20:18 -0700
Subject: TwistedMatrix missing OpenSSL?
In-Reply-To: <-_CdnS9ii5wkWJvanZ2dnUVZ_jOdnZ2d@comcast.com>
References: <eb79828c0710041256g254a7b23m4cf3eed0f2b6b6b1@mail.gmail.com>	<eb79828c0710051016m5f1ec3eck22a27a69f15b068c@mail.gmail.com>
	<mailman.1595.1191607211.2658.python-list@python.org>
	<-_CdnS9ii5wkWJvanZ2dnUVZ_jOdnZ2d@comcast.com>
Message-ID: <dNqdnQTY5b4pW5vanZ2dnUVZ_vKdnZ2d@comcast.com>

>> Lamonte Harris wrote:
>>> Where can I get it?  Anyone got any idea?

Btw, M2Crypto and TLS Lite can also provide SSL for applications using
Twisted, by wrapping Twisted'd ProtocolWrapper and doing SSL in memory.

Here's the code for M2Crypto for example:

http://viewcvs.osafoundation.org/m2crypto/trunk/M2Crypto/SSL/TwistedProtocolWrapper.py?view=markup

And you can find the said projects here:

http://chandlerproject.org/Projects/MeTooCrypto
http://trevp.net/tlslite/

-- 
  Heikki Toivonen


From stephane.larouche at polymtl.ca  Fri Oct 26 20:03:26 2007
From: stephane.larouche at polymtl.ca (=?utf-8?b?U3TDqXBoYW5l?= Larouche)
Date: Sat, 27 Oct 2007 00:03:26 +0000 (UTC)
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
Message-ID: <loom.20071027T000217-759@post.gmane.org>

 <jimmy.musselwhite <at> gmail.com> writes:

> The calculation looks like this
> 
> A = 0.35
> T = 0.30
> C = 0.25
> G = 0.10
> 
> and then I basically continually multiply those numbers together. I
> need to do it like 200,000+ times but that's nuts. I can't even do it
> 1000 times or the number rounds off to 0.0. I tried taking the inverse
> of these numbers as I go but then it just shoots up to "inf".

I suggest you add the logarithm of those numbers.

St?phane



From symbioid at gmail.com  Sat Oct 27 16:15:33 2007
From: symbioid at gmail.com (symbioid)
Date: Sat, 27 Oct 2007 13:15:33 -0700
Subject: cron, python and samba restart
Message-ID: <1193516133.163981.43900@o80g2000hse.googlegroups.com>

Hello,

I'm working on a project, and VMware has problems with suspending the
virtual machine.  We are accessing the machine through samba.
However, when I suspend the VM, it stops the Samba service.

The solution we hit upon was to run a script that checks, say, once a
minute to determine whether the machine was active or suspended.  If
it's been longer than a minute, we restart the samba service.

I have been able to manually execute the script, and it properly
restarts the service.  When running from cron, however, the service
won't restart.  I am able to write the file out, so I know it's
running the script.

Is there something in the way I'm calling with the subprocess.call()
function that's not able to work through cron?  My concern is that I'm
using sudo, and that may be where the problem lies.  I've had the
process run as both root and as localuser in the crontab, both with
and without "sudo"ing the command.  None works.  I don't know how cron
would run a sudo command in this case, anyways...

Any hints would be appreciated.


----------

#!/usr/bin/python
import os.path
import time
import subprocess

t = str(int(time.time()))
f = "gasr.dat"

if os.path.exists(f):
	file = open(f,'r')
	timestamp = file.readline()
	file.close()

	cur_time = int(time.time())
	difference_in_mins = (cur_time - int(timestamp))/60
	if difference_in_mins > 1:
		subprocess.call('sudo /etc/init.d/samba restart', shell=True)
file = open(f,'w')
file.write(t)
file.close()



From furkankuru at gmail.com  Wed Oct 17 15:44:15 2007
From: furkankuru at gmail.com (Furkan Kuru)
Date: Wed, 17 Oct 2007 22:44:15 +0300
Subject: Noob questions about Python
In-Reply-To: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
Message-ID: <3a4a8f930710171244n1ce8ef07s2664ab9836985d27@mail.gmail.com>

li.reverse() does not return a list it just changes the list li.

val = 00110 is evaluated in base 8 try without leading 0s



On 10/17/07, Ixiaus <parnell.s at comcast.net> wrote:
>
> I have recently (today) just started learning/playing with Python. So
> far I am excited and impressed (coming from PHP background).
>
> I have a few questions regarding Python behavior...
>
> val = 'string'
> li = list(val)
> print li.reverse()
>
> returns nothing, but,
>
> val = 'string'
> li = list(val)
> li.reverse()
> print li
>
> returns what I want. Why does Python do that?
>
> Also I have been playing around with Binary math and noticed that
> Python treats:
>
> val = 00110
>
> as the integer 72 instead of returning 00110, why does Python do that?
> (and how can I get around it?)
>
> Grateful for any replies!
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Furkan Kuru
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/8977914b/attachment.html>

From dak at gnu.org  Wed Oct  3 14:26:40 2007
From: dak at gnu.org (David Kastrup)
Date: Wed, 03 Oct 2007 20:26:40 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<85ve9ov971.fsf@lola.goethe.zz> <fdvnr8$odf$2@orkan.itea.ntnu.no>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<fe0mhm$c08$1@orkan.itea.ntnu.no>
Message-ID: <85sl4sqckf.fsf@lola.goethe.zz>

bcd at pvv.ntnu.no (Bent C Dalager) writes:

> In article <l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0 at 4ax.com>,
> George Neuner  <gneuner2/@comcast.net> wrote:
>>On Wed, 3 Oct 2007 09:36:40 +0000 (UTC), bcd at pvv.ntnu.no (Bent C
>>Dalager) wrote:
>>
>>>
>>>Only if you're being exceedingly pedantic and probably not even
>>>then. Webster 1913 lists, among other meanings,
>>>
>>>Free
>>>(...)
>>>"Liberated, by arriving at a certain age, from the control
>>>of parents, guardian, or master."
>>>
>>>The point presumably being that having been "liberated", you are now
>>>"free".

Not as much "been" liberated, but "turned" liberated.

>>Dictionaries used to be the arbiters of the language - any word or
>>meaning of a word not found in the dictionary was considered a
>>colloquial (slang) use.  Since the 1980's, an entry in the
>>dictionary has become little more than evidence of popularity as the
>>major dictionaries (OED, Webster, Cambridge, etc.) will now consider
>>any word they can find used in print.
>
> Apparantly, you missed the part where I referred to the 1913 edition
> of Webster. I have kept it in the quoted text above for your
> convenience. I can assure you that 1913 is both more than 30 years
> ago /and/ it is before 1980, in case that was in doubt.

But picking just a single word from a whole explanation of _one_
naming and declaring it as equivalent is not really being careful with
language at all.

And even when using a Thesaurus, it should be clear that the offered
alternatives are not supposed to or capable of capturing all nuances
of the keyword.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum


From bj_666 at gmx.net  Tue Oct 16 15:17:32 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 19:17:32 GMT
Subject: some questions about Python and tkinter
References: <1192560742.328460.256200@y27g2000pre.googlegroups.com>
Message-ID: <5nkh2cFiilfrU8@mid.uni-berlin.de>

On Tue, 16 Oct 2007 11:52:22 -0700, fabdeb wrote:

> the first: what is the differences between a function and a classe?

A class bundles data and functions into one object.

> In which case i should use a function ?
> In which case i should use a class ?

If you have several functions that operate on the same data it might make
sense to put all into a class to treat them as one "unit".

> The second: there is some pincipals gui toolkit: tkinter , Python Mega-
> Widgets, PyGTK, PyQt, FxPy, WxPy
> 
> what are the advantages of each one, and in which case i use each of
> them?

`Tkinter` is part of the standard library.  If you use that or one of the
others is a matter of taste to some degree.  In a GNOME environment PyGTK
may look more natural, under KDE a PyQt or PyKDE based GUI may feel more
"native".  Another factor for a decision might be the license of the GUI
toolkit.

Ciao,
	Marc 'BlackJack' Rintsch


From horpner at yahoo.com  Thu Oct  4 09:53:14 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Thu, 04 Oct 2007 13:53:14 GMT
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
Message-ID: <slrnfg9ru0.1lk.horpner@FIAD06.norwich.edu>

On 2007-10-03, Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> In message <874ph8sdhx.fsf at benfinney.id.au>, Ben Finney wrote:
>
>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:
>> 
>>> On my Gentoo system:
>>> 
>>>     >>> import os
>>>     >>> os.path
>>>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
>>> 
>>> It's just a variable that happens to point to the posixpath module.
>> 
>> There's no "pointing" going on. It's another name bound to the
>> same object, of equal status to the 'posixpath' name.
>> 
>> Python doesn't have pointers, and even "variable" is a
>> misleading term in Python. Best to stick to "name" and "bound
>> to".
>
> In Python, all names _are_ variables. They are not "bound" to
> objects. The value of os.path is a pointer. It's implemented as
> a pointer, it has all the semantics of a pointer.

No. A pointer is also an iterator.

void duplicate(char *d, const char *s)
{
  while (*d++ = *s++)
    ;
}

What does that look like implemented with Python names?

def duplicate(d, s):
  raise AbstractionViolationError("Python identifiers aren't pointers.")

Moreover, it seems difficult to promote the concept of a pointers
in a language which doesn't provide a "take the address of an
object" operation.

> Honestly, why do people react to the word "pointer" as though
> computers have to wear underwear to conceal something shameful
> going on in their nether regions?

Refraining from thinking about pointers (unless I have to) saves
wear and tear on the old bean.  I also like to think of 5 as an
integer most of the time.

-- 
Neil Cerutti
Will the last person to leave please see that the perpetual light is
extinguished --sign at New England church


From MDiPierro at cti.depaul.edu  Tue Oct 16 14:16:07 2007
From: MDiPierro at cti.depaul.edu (DiPierro, Massimo)
Date: Tue, 16 Oct 2007 13:16:07 -0500
Subject: re.sub
In-Reply-To: <4866bea60710161112k40b2ae48i21fe24d76d90058d@mail.gmail.com>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>,
	<4866bea60710161112k40b2ae48i21fe24d76d90058d@mail.gmail.com>
Message-ID: <C1AA20CAC1E41647BFF1D41215EDD4755C48F84DCD@wagner.cti.depaul.edu>

That is not the problem. The problem is that

re.sub('a','\\n','bab')

cannot be the same as

re.sub('a','\n','bab')

This is evaluating the string to be substituted before the substitution.

Massimo

________________________________________
From: python-list-bounces+mdipierro=cti.depaul.edu at python.org [python-list-bounces+mdipierro=cti.depaul.edu at python.org] On Behalf Of Chris Mellon [arkanes at gmail.com]
Sent: Tuesday, October 16, 2007 1:12 PM
To: python-list at python.org
Subject: Re: re.sub

On 10/16/07, Massimo Di Pierro <mdipierro at cti.depaul.edu> wrote:
> Even stranger
>
>  >>> re.sub('a', '\\n','bab')
> 'b\nb'
>  >>> print re.sub('a', '\\n','bab')
> b
> b
>

You called print, so instead of getting an escaped string literal, the
string is being printed to your terminal, which is printing the
newline.
--
http://mail.python.org/mailman/listinfo/python-list


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 14 18:27:31 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 14 Oct 2007 22:27:31 -0000
Subject: Order of tuples in dict.items()
References: <47122790$0$8421$db0fefd9@news.zen.co.uk>
	<nN-dnfyHy67p5o_anZ2dnUVZ_rKtnZ2d@speakeasy.net>
Message-ID: <13h55uj8pogd4ea@corp.supernews.com>

On Sun, 14 Oct 2007 13:26:27 -0700, Erik Max Francis wrote:

> Will McGugan wrote:
> 
>> If I have two dictionaries containing identical values, can I be sure
>> that the items() method will return tuples in the same order?
[...]
>> Can I rely on this behavior?
> 
> Probably not.

Definitely not. See Paul Hankin's earlier post in this thread.


> Dictionaries do not have an ordering that you should
> count on.  In practice, the order in which you get the items if you
> iterate over a dictionary is dependent on the hashing function, which
> can potentially change over time.

Well, I suppose it *is* possible for Python to change its hash function 
in some future version, but Python hashing is highly optimized, very fast 
and not likely to change.

It's especially not likely to change in the middle of a run of your 
program, say between calling a.items() and calling b.items().

However, the very nature of hash tables is that they are dependent on the 
order that items are added and removed; Python dicts are hash tables, and 
sure enough, their order is dependent on the order that items are added 
and removed. Here's the simplest example I could come up with:

>>> {-1: 'a', -2: 'b'}
{-2: 'b', -1: 'a'}
>>> {-2: 'b', -1: 'a'}
{-1: 'a', -2: 'b'}



> This is a case where most implementations _probably_ will return
> identical dictionaries in the same order when iterated over (of course,
> different implementations will have different orderings, but you don't
> care about that), but I wouldn't take the chance and rely on such an
> implementation detail.

I think this is a case of being right for the wrong reasons.


> If you want to keep track of the order in which objects were added to a
> dictionary, you'll need to keep a separate list of (sorted) keys, which
> is easy enough.

Keeping a list of keys *in the order they are added* is not the same as 
keeping a list of keys *sorted*. Here's an obvious example:

D = {}
D['b'] = 2
D['a'] = 1
D['c'] = 3

Insertion order: bac
Sorted order: abc


> If you're lazy there are plenty of recipes around for
> things like `SortedDictionary` or `sorteddict`.

I've never seen the point of a sorted dictionary, it's easy to just say:

for key, value in sorted(D.items())

An OrderedDict, that remembers the order that items are added, might be a 
good addition to the standard library. But that would depend on folks 
agreeing on its semantics.



-- 
Steven.


From anandology at gmail.com  Tue Oct 30 23:26:26 2007
From: anandology at gmail.com (Anand)
Date: Wed, 31 Oct 2007 03:26:26 -0000
Subject: object inheritance
In-Reply-To: <mailman.518.1193515677.13605.python-list@python.org>
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
	<mailman.518.1193515677.13605.python-list@python.org>
Message-ID: <1193801186.600457.5660@t8g2000prg.googlegroups.com>

On Oct 28, 1:16 am, Pradeep Jindal <praddyjin... at gmail.com> wrote:
> On Friday 26 Oct 2007 6:21:57 pm Anand wrote:
>
>
>
> > On Oct 26, 5:31 pm, "Pradeep Jindal" <praddyjin... at gmail.com> wrote:
> > > Can you tell any specific use case for doing this?
>
> > I have many implementaions of a db interface.
>
> > SimpleDB - simple implementation
> > BetterDB - optimized implementation
> > CachedDB - an implementation with caching of queries
> > RestrictedDB - implementation with permissions
>
> > Now, I want to combine these implementations and use.
> > Typical use case scenarios are:
>
> > db = RestrictedDB(CachedDB(SimpleDB()))
> > db = RestrictedDB(SimpleDB())
> > db = RestrictedDB(BetterDB())
> > db = RestrictedDB(CachedDB(BetterDB())
> > db = CachedDB(SimpleDB())
> > etc..
>
> I agree with Duncan. According to me, this should be called Delegation rather
> than inheritance. And delegation should work without any conflicts of
> identifier names and all that. I think, it should be all about several
> objects implementing a protocol (interface) and that should work cleanly.

I don't think so. It is not as simple as delegation.

In the example that I gave previously, call to self.say in A.foo
calls B.say not A.say, which I think is not possible with delegation.






From panguohualove at sina.com  Tue Oct  2 12:01:51 2007
From: panguohualove at sina.com (panguohua)
Date: Tue, 02 Oct 2007 09:01:51 -0700
Subject: I earn $36800 a month with google adsense
In-Reply-To: <1191330957.461057.313830@k79g2000hse.googlegroups.com>
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
	<1191240372.428917.253350@o80g2000hse.googlegroups.com>
	<1191289294.449262.234020@r29g2000hsg.googlegroups.com>
	<1191330957.461057.313830@k79g2000hse.googlegroups.com>
Message-ID: <1191340911.199902.314570@w3g2000hsg.googlegroups.com>

I am only a publisher!!!


really it is useful



From mellit at gmail.com  Sun Oct 28 18:51:09 2007
From: mellit at gmail.com (Anton Mellit)
Date: Sun, 28 Oct 2007 23:51:09 +0100
Subject: Pari Python
In-Reply-To: <1193598908.230475.204810@57g2000hsv.googlegroups.com>
References: <1193593529.388263.211930@z9g2000hsf.googlegroups.com>
	<1193598908.230475.204810@57g2000hsv.googlegroups.com>
Message-ID: <c038b2740710281551s3fe93eb0p157fdf6c99a09dfd@mail.gmail.com>

> Does your version use the GMP library (optional in PARI).
> Does it support Windows? I couldn't tell if the PARI
> Windows distribution has GMP, but I suspect not since GMP
> doesn't support Windows.

No, I didn't try to use gmp. But this may be not a bad idea. I am
trying to compile gmp right now. I am also using Windows. Here there
are two ways to work. The first is cygwin. Actually the standard PARI
distribution uses cygwin. Problem is that in this case you must also
use cygwin version of Python. It is very easy in my case - I have a
full Cygwin system installed together with python, bash, gcc etc. It
is not bad actually - bash is much more powerful than cmd. And you can
start windows programs from bash, start cygwin problems from windows,
I mean it is having linux and windows simultaneously.

But if you are using windows python then you must compile everything
for windows because somehow cygwin1.dll (yes, just one dll is enough)
does not work with windows python. So there are no problems with
compiling my module on windows provided you managed to compile PARI
which does not use cygwin. It is possible (you have to use mingw32 +
msys to compile and remove '#define UNIX' from paricfg.h), I tried
this and it seem to work. Personally I don't like it so much because
on windows python does not support colors, everything is black and
white. There is a thing called ipython (google it) which has some
colors. So this may be an option. So there should be no problems to
make the whole thing purely windows. I haven't tried to compile GMP
under mingw. But I think there should be no problems as well. This is
just mathematical library, it shouldn't use too much from the system.

> >
> > There are two special difficulties you may notice about python. The
> > first one is the power operation. In python it is '**', whereas '^' is
> > reserved for the bitwise xor. I made some little changes to the python
> > source so that '^' and '^=' now work as power, and '^^' and '^^=' work
> > as xor if you still want to use it.
>
> Oh, dear.
>
> > This is done by modifying about 30
> > lines of source code in several files: Include/token.h, Modules/
> > parsermodule.c, Parser/tokenizer.c, Python/ast.c, Grammar/Grammar.
>
> Am I gonna have to re-compile Python?

Yes, unfortunately this hack with '^' needs python to be recompiled.
You see, the problem is not just with symbol. The problem is that
normally ^ has precedence less than +. For example even if you
redefine '^' to be the power operation the following expression 2*2^2
will be 16, not 8 as you expect.

>
> That's imposible for ordinary Windows users.
>

Well, this should not be impossible. I haven't tried, but I've heard
that the free version of Microsoft Visual C++ is enough
(http://msdn2.microsoft.com/en-us/express/aa975050.aspx).

> Are you going to make a binary Windows distribution?

Definitely I can make a binary distribution as well. Just need some time :)

>
> If not, it may as well be on the far side of the moon for
> all the good it would be to me.
>

So when I make a binary distribution for Windows I can upload it
somewhere and post a link.


From python.list at tim.thechases.com  Wed Oct 31 11:13:44 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 31 Oct 2007 10:13:44 -0500
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <loom.20071031T132748-928@post.gmane.org>
References: <loom.20071031T132748-928@post.gmane.org>
Message-ID: <47289BA8.5000109@tim.thechases.com>

> if I check a string for for a substring, and this substring isn't found, 
> should't the .find method return 0 rather than -1?
> this breaks the 
> 
> if check.find('something'):
>     do(somethingElse)
> 
> idiom, which is a bit of a pity I think.

That idiom is spelled:

   if 'something' in check:
     do(somethingElse)

Unless you really do need to start at a particular offset where 
you use the additional parameters of find(), such as 
find('something', 3, 42).  In that case, you can slice your target:

  if 'something' in check[3:42]:
    do(somethingElse)

The above is untested, so check for fencepost errors, but the 
theory holds.

So pretty much, I'd never consider using find() :)

-tkc




From duncan.booth at invalid.invalid  Wed Oct 17 04:00:20 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 17 Oct 2007 08:00:20 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
Message-ID: <Xns99CC5B9CBE886duncanbooth@127.0.0.1>

paul.melis at gmail.com wrote:

> On Oct 10, 8:23 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
<snip>
>> rebinds a. Period. Which is the _essential_ thing in my post, because
>> this rebinding semantics are what confused the OP.
> 
> Doesn't this depend on wether "a" supports __iadd__ or not? Section
> 3.4.7 of the docs say
> 
> """
> If a specific method is not defined, the augmented operation falls
> back to the normal methods. For instance, to evaluate the expression x
> +=y, where x is an instance of a class that has an __iadd__() method,
> x.__iadd__(y) is called. If x is an instance of a class that does not
> define a __iadd__() method, x.__add__(y) and y.__radd__(x) are
> considered, as with the evaluation of x+y.
> """
> 
> So if a.__iadd__ exists, a += b is executed as a.__iadd__(b), in which
> case there's no reason to rebind a.
> 
You misunderstand the documentation, what you quoted doesn't say that 
the assignment is suppressed. If a.__iadd__ exists, a += b is executed 
as a = a.__iadd__(b)

The options for a+=b are:

   a = a.__iadd__(b)
   a = a.__add__(b)
   a = b.__radd__(a)

but the assignment always happens, it is only what gets executed for the 
right hand side which varies.


From steve at holdenweb.com  Sun Oct  7 08:00:56 2007
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 07 Oct 2007 08:00:56 -0400
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1i5kk06.enf7ws1juj4zkN%raims@dot.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>	<fe7otk$21a$1@newsreader2.netcologne.de>	<1i5kbfo.xq3fut1f7ouujN%raims@dot.com>	<kh7kt4-v7q.ln1@strongwill.g2ctech>
	<1i5kk06.enf7ws1juj4zkN%raims@dot.com>
Message-ID: <feahpl$156$1@sea.gmane.org>

Lawrence Oluyede wrote:
> Jorge Godoy <jgodoy at gmail.com> wrote:
>> What is good, since a lot of good things from Pylons will work with TG and a
>> lot of good TG things will remain (and possibly be compatible with Pylons).
>> If you take a better look at "the next version", you'll also see that the
>> major concern was with WSGI support and reinventing / "rewriting" the wheel
>> (what TG developers don't want to do all the time).
> 
> Not reinventing the wheel just don't feel as a universal dogma to me. I
> developed quite a bit with Django and I was glad they started from
> scratch. On the paper reusing different and existing projects is great
> but not always is good or done the right way. Anyway I don't know TG at
> all so I'm speaking in a figurative way.
> 
> We (Michele, myself and our colleagues) have a series of stuff we need
> to stick to so the choosing of a web framework ain't that easy. Most of
> the frameworks are a vision of the author of how to do things from
> scratch but a framework (by definition an evolution of a library) is not
> always meant to be used when the scratch is far from your starting
> point. 
> 
> I'd like to read some commenting of Michele's thoughts, they would be
> really useful.
> 
> :-)
> 
Porting existing web applications to new architectures requires more 
than just transliteration, since you lose some metaphors available only 
in the donor system and may therefore need to take advantage of new 
idioms in the new environment to compensate.

I spent some time trying to re-architect the code from "Python Web 
Programming" in TurboGears. That was difficult not because TG is a bad 
system but because there was an impedance mismatch between the original 
code's framework and the way TG does things.

I guess I would have similar problems with Django.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From jstroud at mbi.ucla.edu  Tue Oct 16 06:00:47 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 16 Oct 2007 03:00:47 -0700
Subject: extension to list extend
In-Reply-To: <ff21c5$k8g$01$1@news.t-online.com>
References: <xD%Qi.8447$6p6.3929@newssvr25.news.prodigy.net>
	<ff21c5$k8g$01$1@news.t-online.com>
Message-ID: <6T%Qi.4717$R95.2788@nlpi070.nbdc.sbc.com>

Peter Otten wrote:
> James Stroud wrote:
> 
>> Found that this would be handy today:
>>
>>    alist = [1, 2, 3]
>>    alist.extend(['a', 'b', 'c'], 1)
>>    alist == [1, 'a', 'b', 'c', 2, 3]  # True
> 
> A better name for that would be insert(), but that is already used for
> single-item insertion. For the time being you can do
> 
>>>> items = [1, 2, 3]
>>>> items[1:1] = "abc"
>>>> items
> [1, 'a', 'b', 'c', 2, 3]

Thanks! It looks much nicer too.

James

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

http://www.jamesstroud.com


From nagle at animats.com  Thu Oct 11 01:33:31 2007
From: nagle at animats.com (John Nagle)
Date: Wed, 10 Oct 2007 22:33:31 -0700
Subject: M2Crypto possible intermittent bug
In-Reply-To: <WZudncXyb6GhxpDanZ2dnUVZ_vKdnZ2d@comcast.com>
References: <F6YOi.5439$4V6.191@newssvr14.news.prodigy.net>
	<UO7Pi.11918$JD.8995@newssvr21.news.prodigy.net>
	<%tcPi.58508$YL5.4581@newssvr29.news.prodigy.net>
	<WZudncXyb6GhxpDanZ2dnUVZ_vKdnZ2d@comcast.com>
Message-ID: <xniPi.4941$oA2.2506@nlpi068.nbdc.sbc.com>

Heikki Toivonen wrote:
> John Nagle wrote:
>>     Still having trouble reproducing the problem. But somewhere,
>> something raised that bogus no-error exception three times.
>> Anything that returns "(0, 'Error')" as exception data is a bug.
> 
> If you can, build python and m2crypto with debug symbols, and place
> breakpoints in |case SSL_ERROR_SYSCALL| blocks (from _ssl.i). Then rerun
> the tests. That would be my first guess as to where these might be
> coming from.

    I don't have the right compiler to build it on Windows, and it
doesn't seem to be failing on Linux.  It failed three times during
one test run and hasn't failed since.  That makes me suspect an
uninitialized data problem in C code.  I'll try to reproduce the
problem.

				John Nagle


From bj_666 at gmx.net  Tue Oct 23 03:35:50 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Oct 2007 07:35:50 GMT
Subject: Automatic Generation of Python Class Files
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<mailman.337.1193077412.13605.python-list@python.org>
	<1193078577.129883.317680@k35g2000prh.googlegroups.com>
	<P5udnUIOF_LobYHanZ2dnUVZ_uDinZ2d@comcast.com>
	<471d06e2$0$12275$426a74cc@news.free.fr>
	<LoSdnQ2Qx-F1r4DanZ2dnUVZ_tijnZ2d@comcast.com>
Message-ID: <5o5mimFld8c9U1@mid.uni-berlin.de>

On Mon, 22 Oct 2007 17:31:51 -0600, Steven Bethard wrote:

> Bruno Desthuilliers wrote:
>> Computed attributes are IMHO not only a life-saver when it comes to 
>> refactoring. There are cases where you *really* have - by 'design' I'd 
>> say - the semantic of a property, but know from the start you'll need 
>> computation (for whatever reason). Then what would be the rationale for 
>> using explicit getters/setters ?
> 
> I'd be interested to hear what these use cases are.

Stupid little example: A circle object with `radius` and `diameter`
attributes.  It doesn't make sense to store both a as normal attributes
because they will eventually get out of sync.  One can be implemented as a
property.

Another one is delegation of attribute access.  I'm thinking of a wrapper
class around an object with an attribute, say `is_active`, and a wrapper
that has a property with the same name that returns the value of the
wrapped objects attribute.

Or lazy computation of an attribute.  Breaks expectations for the first
access -- long calculation for simple attribute access -- but meets it for
every subsequent access.

Ciao,
	Marc 'BlackJack' Rintsch


From hniksic at xemacs.org  Mon Oct  1 14:28:32 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 01 Oct 2007 20:28:32 +0200
Subject: Limits on search length
References: <mailman.1354.1191259433.2658.python-list@python.org>
Message-ID: <87fy0ulmen.fsf@mulj.homelinux.net>

Daryl Lee <dlee at altaregos.com> writes:

> I am trying to locate all lines in a suite of files with quoted
> strings of particular lengths.  A search pattern like r'".{15}"'
> finds 15-character strings very nicely.  But I have some very long
> ones, and a pattern like r'".{272}"' fails miserably, even though I
> know I have at least one 272-character string.

It seems to work for me.  Which version of Python are you using?

Here is how I tested it.  First, I modified your program so that it
actually runs (sys and re imports were missing) and removed
unnecessary globbing and file opening:

import sys, re

searchPattern  = sys.argv[1]
cpat = re.compile(searchPattern)

lineNumber = 0
for line in sys.stdin:
    lineNumber += 1
    m = cpat.search(line)
    if m is not None:
        print "(", lineNumber, ")", line

Now, create a file with three lines, each with a string of different
length:

$ printf '"%*s"\n' 271 > fl
$ printf '"%*s"\n' 272 >> fl
$ printf '"%*s"\n' 273 >> fl

And run the script:

$ python scriptfile '".{272}"' < fl
( 2 ) "[... 272 blanks]"

That looks correct to me.

> In the short term, I can resort to locating the character positions
> of the quotes,

You can also catch all strings and only filter those of the length you
care about.


From stefan.arentz at gmail.com  Tue Oct  9 11:45:12 2007
From: stefan.arentz at gmail.com (Stefan Arentz)
Date: 09 Oct 2007 17:45:12 +0200
Subject: Native class methods
References: <87r6k4iac6.fsf@keizer.soze.com>
	<mailman.26.1191943745.916.python-list@python.org>
Message-ID: <87myusi96f.fsf@keizer.soze.com>

"Chris Mellon" <arkanes at gmail.com> writes:

> On 09 Oct 2007 17:20:09 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
> >
> > Is there an easy way to implement a specific method of a Python class
> > in C? Like a native method in Java? I would really like to do the
> > majority of my class code in Python and just do one or two methods
> > in C.
> >
> >  S.
> >
> 
> Weave kinda does this - you can use it write inline C code, which it
> extracts and compiles for you. (http://scipy.org/Weave)
> 
> You might also want to look at Pyrex and/or Cython, which let you
> write in a Python-like language that is compiled to C.
> (http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/ and
> http://cython.org).
> 
> Depending on what you want to do in C, just writing it as a normal
> shared library and calling it with ctypes might also be an effective
> solution. (in the standard library, as of 2.5)

Yeah I'm really trying to do this without any dependencies on external
libraries. The ctypes way looks interesting but I had really hoped for
something more JNI-like :-/

 S.



From python at rcn.com  Wed Oct 31 18:10:48 2007
From: python at rcn.com (Raymond Hettinger)
Date: Wed, 31 Oct 2007 15:10:48 -0700
Subject: marshal vs pickle
In-Reply-To: <1193858836.163776.31900@o3g2000hsb.googlegroups.com>
References: <mailman.669.1193815903.13605.python-list@python.org>
	<1193838300.998229.33380@v3g2000hsg.googlegroups.com>
	<1193852239.801436.326320@z24g2000prh.googlegroups.com>
	<1193858836.163776.31900@o3g2000hsb.googlegroups.com>
Message-ID: <1193868648.073348.126810@t8g2000prg.googlegroups.com>

On Oct 31, 12:27 pm, Aaron Watters <aaron.watt... at gmail.com> wrote:
> Anyway since it's easy and makes sense I think
> the next version of nucular will have a
> switchable option between marshal and cPickle
> for persistant storage.

Makes more sense to use cPickle and be done with it.

FWIW, I've updated the docs to be absolutely clear on the subject:

'''
This is not a general "persistence" module.  For general persistence
and
transfer of Python objects through RPC calls, see the
modules :mod:`pickle` and
:mod:`shelve`.  The :mod:`marshal` module exists mainly to support
reading and
writing the "pseudo-compiled" code for Python modules of :file:`.pyc`
files.
Therefore, the Python maintainers reserve the right to modify the
marshal format
in backward incompatible ways should the need arise.  If you're
serializing and
de-serializing Python objects, use the :mod:`pickle` module instead --
the
performance is comparable, version independence is guaranteed, and
pickle
supports a substantially wider range of objects than marshal.

.. warning::

   The :mod:`marshal` module is not intended to be secure against
erroneous or
   maliciously constructed data.  Never unmarshal data received from
an
   untrusted or unauthenticated source.

Not all Python object types are supported; in general, only objects
whose value
is independent from a particular invocation of Python can be written
and read by
this module.  The following types are supported: ``None``, integers,
long
integers, floating point numbers, strings, Unicode objects, tuples,
lists,
dictionaries, and code objects, where it should be understood that
tuples, lists
and dictionaries are only supported as long as the values contained
therein are
themselves supported; and recursive lists and dictionaries should not
be written
(they will cause infinite loops).

.. warning::

   Some unsupported types such as subclasses of builtins will appear
to marshal
   and unmarshal correctly, but in fact, their type will change and
the
   additional subclass functionality and instance attributes will be
lost.

.. warning::

   On machines where C's ``long int`` type has more than 32 bits (such
as the
   DEC Alpha), it is possible to create plain Python integers that are
longer
   than 32 bits. If such an integer is marshaled and read back in on a
machine
   where C's ``long int`` type has only 32 bits, a Python long integer
object
   is returned instead.  While of a different type, the numeric value
is the
   same.  (This behavior is new in Python 2.2.  In earlier versions,
all but the
   least-significant 32 bits of the value were lost, and a warning
message was
   printed.)
'''



From steven.bethard at gmail.com  Wed Oct 31 10:43:18 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 31 Oct 2007 08:43:18 -0600
Subject: Python Interview Questions
In-Reply-To: <1193821095.670628.187210@y42g2000hsy.googlegroups.com>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
	<mailman.658.1193771958.13605.python-list@python.org>
	<1193821095.670628.187210@y42g2000hsy.googlegroups.com>
Message-ID: <sNidnUGpR8YaCbXanZ2dnUVZ_vvinZ2d@comcast.com>

konryd wrote:
>> - string building...do they use "+=" or do they build a list
>>    and use .join() to recombine them efficiently
> 
> 
> I'm not dead sure about that, but I heard recently that python's been
> optimized for that behaviour. That means: using += is almost as fast
> as joining list.

For some simple cases, this is true.  But it only works in CPython, not 
say Jython.  So it's a better practice to continue using .join().

STeVe


From bdesth.quelquechose at free.quelquepart.fr  Sat Oct  6 02:28:12 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 06 Oct 2007 08:28:12 +0200
Subject: Static variable vs Class variable
In-Reply-To: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
Message-ID: <470bd4a5$0$15758$426a74cc@news.free.fr>

minkoo.seo at gmail.com a ?crit :
> Hi.
> 
> I've got a question on the differences and how to define static and
> class variables.

What's a "static" variable ? A variable that doesn't move ?-)

  > Hence, my understanding is that static variables must be bound to the
> class defining the variables 

You mean "class attributes". Thinking in terms of another language won't 
help understanding Python's objec model.

> and shared by children of parent class
> where the variable is defined. But, please have a look at this code in
> which a guy told me that the variable a is static:

Then don't listen what this guy says.

>>>>class Foo:
> 
> 	a = 1
> 	@classmethod
> 	def increment(cls):
> 		cls.a += 1
> 		print cls.a
> 
> Here, I am defining variable a which, I believe is class variable,

a class attribute

> i.e., variable that is not bound to Foo itself.

Yes it is. It's an attribute of the class object Foo.

> Rather, a is bound to
> the class which is accessing the variable.

False.
 >>> dir(Foo)
['__doc__', '__module__', 'a', 'increment']
 >>> Foo.__dict__
{'a': 1, '__module__': '__main__', '__doc__': None, 'increment': 
<classmethod object at 0x402d141c>}

> The code that corroborates
> this idea is as follows:
> 
>>>>class Child1(Foo):
> 	pass
> 
>>>>Child1.increment()
> 4

???

> 
>>>>class Child2(Foo):
> 	pass
> 
>>>>Child2.increment() 
> 4

I don't have the same result here. But anyway: the increment method is 
rebinding 'a', so the first time it's called on a child class, it 
creates an attribute 'a' for this class. Just change your code this way 
and you'll see what happens:

   def increment(cls):
      print dir(cls)
      cls.a += 1
      print dir(cls)


FWIW, if you don't get this, then you may encounter another common gotcha:

class Truc:
    a = 1
    def gotcha(self):
      self.a += 1
      print self.a

print Truc.a
t = Truc()
print t.a
t.gotcha()
print Truc.a
t2 = Truc()
print t2.a
t2.gotcha()
print Truc.a
t.gotcha()
print t.a
print t2.a
print Truc.a

Enjoy !-)

Now back to your snippet : if you don't want this behaviour, wrap 'a' 
into a mutable container:

class Foo:
     a = [1]

     @classmethod
     def increment(cls):
         cls.a[0] += 1
         print cls.a[0]


class Child(Foo):
     pass

And if you want to hide that, use properties (warning: you need nex 
style classes here):

class Foo(object):
     _a = [1]

     @classmethod
     def increment(cls):
         cls._a[0] += 1
         print cls._a[0]

     @apply
     def a():
         def fget(self):
             return type(self)._a[0]
         def fset(self, val):
             type(self)._a[0] = val
         return property(**locals())

class Child(Foo):
     pass

> This means that Child1 and Child2 does not share variable a which
> means that variable a is class variable rather than static variable.

Nope. This only means that you don't understand the (somewhat peculiar) 
semantics of bindings, immutable objects and attribute lookup rules in 
Python.

> Could you please comment on this? Is a static or class variable?

It's a class attribute.

> What's the most recent way of defining 'class' and 'static' variables?

No 'static variable' in Python. And what you call a 'class variable' is 
nothing else than an ordinary of the class object


From __peter__ at web.de  Sat Oct 20 03:32:37 2007
From: __peter__ at web.de (Peter Otten)
Date: Sat, 20 Oct 2007 09:32:37 +0200
Subject: __main__ : What is this?
References: <mailman.234.1192836549.13605.python-list@python.org>
	<1192839982.488484.102860@e34g2000pro.googlegroups.com>
	<13hj0u61d8n795@corp.supernews.com>
Message-ID: <ffcaul$v0i$01$1@news.t-online.com>

Steven D'Aprano wrote:

> On Sat, 20 Oct 2007 00:26:22 +0000, Matimus wrote:
> 
>> The common pattern:
>> 
>> if __name__ == "__main__":
>>   # do stuff
>> 
>> IMHO better written:
>> 
>> if "__main__" == __name__:
>>     # do stuff
> 
> Apart from looking weird, what's the difference?

In C this style is sometimes propagated as a means to avoid accidental
assignment:

if (main="main") {...} /* valid C, always true */
if ("main"=main) {...} /* syntax error */

In Python it would be cargo cult.

Peter


From arkanes at gmail.com  Thu Oct 11 16:05:00 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 11 Oct 2007 15:05:00 -0500
Subject: Finding Peoples' Names in Files
In-Reply-To: <felupe$jk0$1@solaris.cc.vt.edu>
References: <felf4g$q8c$1@solaris.cc.vt.edu>
	<1192116309.880026.83240@r29g2000hsg.googlegroups.com>
	<felg5m$rta$1@solaris.cc.vt.edu>
	<1192117743.911143.152680@d55g2000hsg.googlegroups.com>
	<felhv8$18g$1@solaris.cc.vt.edu>
	<1192121372.931784.171120@d55g2000hsg.googlegroups.com>
	<1192122174.084193.298950@v3g2000hsg.googlegroups.com>
	<mailman.107.1192131799.927.python-list@python.org>
	<felupe$jk0$1@solaris.cc.vt.edu>
Message-ID: <4866bea60710111305kfd1ab90t8340b34218c3b913@mail.gmail.com>

On 10/11/07, brad <byte8bits at gmail.com> wrote:
> Chris Mellon wrote:
>
> > In case you're doing this for PCI validation, be aware that just the
> > CC number is considered sensitive and you'd get some false negatives
> > if you filter on anything except that.
> >
> > Random strings that match CC checksums are really quite rare and false
> > positives from that alone are unlikely to be a problem. Unless I
> > deployed this and there was a significant false positive rate I
> > wouldn't risk the false negatives, personally.
>
> Yes, it is for PCI. Our rate of false positives is low, very low. I
> wasn't aware that a number alone was a PCI violation. Thank you! On
> another note, we're a university (Virginia Tech) and we're subject to
> FERPA, HIPPA, GLBA, etc... in addition to PCI. So we do these checks for
> U.S. Social Security Numbers too in an effort to prevent or lessen the
> chance of ID theft. Unfortunately, there is no luhn check for SSNs. We
> follow the Social Security Administration verification guideline
> religiously... here's an web front-end to my logic:
>
> http://black.cirt.vt.edu/public/valid_ssn/index.html
>
> but still have many false positives on SSNs, so being able to id *names
> and numbers* in files would still be a be benefit to us.
>
> Brad
> --
> http://mail.python.org/mailman/listinfo/python-list
>

Defining the problem as "given a word, figure out if that word is
likely to be a name", it seems the simplest solution is to get a
corpus of names and then flag them based on edit distance from words
in the name list. Maybe soundex? You're going to need  a *massive*
corpus though, and that might be a problem if you distribute this for
people to run instead of doing it centrally.

As a totally off the wall speculation, you might be able to train a
neural net against a large enough corpus (Say, your student and
faculty member databases) and end up with something that can match a
name algorithmically without needing the table. This is a really hard
problem - maybe you can get your CompSci department to make it part of
someones thesis ;)

Once you've got a way to tell if a word might be a name, and a way to
tell if another word is likely to be a SSN, you just need to match up
hits within the same document, use some sort of distance filter, and
then you'll be "done".

I assume this is intended primary to catch files that people are
storing accidentally, rather that catching intentional identity theft
in action. It'd be trivial to hide from these sort of scans if you
were actively malicious.


From paul.hankin at gmail.com  Mon Oct 15 07:54:20 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Mon, 15 Oct 2007 11:54:20 -0000
Subject: Simple Text Processing Help
In-Reply-To: <5nh0oeFhiqfbU3@mid.uni-berlin.de>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
	<5nh0oeFhiqfbU3@mid.uni-berlin.de>
Message-ID: <1192449260.448301.113180@q5g2000prf.googlegroups.com>

On Oct 15, 12:20 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Mon, 15 Oct 2007 10:47:16 +0000, patrick.waldo wrote:
> > my sample input file looks like this( not organized,as you see it):
> > 200-720-7        69-93-2
> > kyselina mocov?      C5H4N4O3
>
> > 200-001-8       50-00-0
> > formaldehyd      CH2O
>
> > 200-002-3
> > 50-01-1
> > guanid?nium-chlorid      CH5N3.ClH
>
> > etc...
>
> That's quite irregular so it is not that straightforward.  One way is to
> split everything into words, start a record by taking the first two
> elements and then look for the start of the next record that looks like
> three numbers concatenated by '-' characters.  Quick and dirty hack:
>
> import codecs
> import re
>
> NR_RE = re.compile(r'^\d+-\d+-\d+$')
>
> def iter_elements(tokens):
>     tokens = iter(tokens)
>     try:
>         nr_a = tokens.next()
>         while True:
>             nr_b = tokens.next()
>             items = list()
>             for item in tokens:
>                 if NR_RE.match(item):
>                     yield (nr_a, nr_b, ' '.join(items[:-1]), items[-1])
>                     nr_a = item
>                     break
>                 else:
>                     items.append(item)
>     except StopIteration:
>         yield (nr_a, nr_b, ' '.join(items[:-1]), items[-1])

Maybe this is a bit more readable?

def iter_elements(tokens):
    chem = []
    for tok in tokens:
        if NR_RE.match(tok) and len(chem) >= 4:
            chem[2:-1] = [' '.join(chem[2:-1])]
            yield chem
            chem = []
        chem.append(tok)
    yield chem

--
Paul Hankin



From martin at v.loewis.de  Tue Oct 23 17:42:46 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 23 Oct 2007 23:42:46 +0200
Subject: Python on Intel A110?
In-Reply-To: <2007102314041416807-bob@passcalnmtedu>
References: <2007102314041416807-bob@passcalnmtedu>
Message-ID: <471E6AD6.2060908@v.loewis.de>

> Will the "stock" Windows version of Python install on a Samsung Q1U-EL
> UMPC running Vista and with an Intel A110 processor?  

Certainly. This is an Pentium M class processor; the Python binaries
will run on any Pentium-or-better processor (probably actually
486-or-better).

Regards,
Martin


From mail at microcorp.co.za  Thu Oct 18 02:36:24 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Thu, 18 Oct 2007 08:36:24 +0200
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com><5n94u3Fh5e4gU1@mid.uni-berlin.de><fensk8$la6$03$1@news.t-online.com><5nebmhFhp48uU1@mid.uni-berlin.de><fevj8a$imh$01$1@news.t-online.com><1192603763.894935.39680@e34g2000pro.googlegroups.com>
	<1192605396.249377.217430@i38g2000prf.googlegroups.com>
Message-ID: <003d01c81151$347ba240$03000080@hendrik>

"Raymond Hettinger" <pyt...cn.com> wrote:

> More straight-forward version:
> 
> def lastdetecter(iterable):
>     t, lookahead = tee(iterable)
>     lookahead.next()
>     return izip(chain(imap(itemgetter(0), izip(repeat(False),
> lookahead)), repeat(True)), t)

If this is what you call straightforward - heaven forfend
that I ever clap my orbs on something you call convoluted!

:-)

Faced with this problem, I would probably have used
enumerate with a look ahead and the IndexError would
have told me I am at the end...

- Hendrik



From tjreedy at udel.edu  Mon Oct  1 23:33:45 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 1 Oct 2007 23:33:45 -0400
Subject: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com><1191254961.729631.256760@22g2000hsm.googlegroups.com><slrnfg2bhk.23g.horpner@FIAD06.norwich.edu><1191272365.225974.41660@w3g2000hsg.googlegroups.com>
	<1191283765.496514.94080@50g2000hsm.googlegroups.com>
Message-ID: <fdse6o$4ou$1@sea.gmane.org>


"andresj" <andres.j.new at gmail.com> wrote in message 
news:1191283765.496514.94080 at 50g2000hsm.googlegroups.com...
|| I know from __future__ import division changes the behaivour to return
| floats instead of ints, but what I meant is to be able to implement a
| function (or class/method) which would return what _I_ want/decide.

When you define your own class, you can make any operator (on instances of 
that class) mean anything you want.  But to use such methonds, once 
defined, you first have to make instances of that class using 
classname(init data) or whatever.

There is no way to hijack int op int though.

tjr





From akraemer at sbcglobal.net  Tue Oct  9 14:18:51 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Tue, 9 Oct 2007 11:18:51 -0700 (PDT)
Subject: storing meta data on dictionary keys
Message-ID: <217848.22692.qm@web81002.mail.mud.yahoo.com>

I sometimes find it useful to store meta data on dictionary keys, like in the following example:

class Dict(dict):
  def __init__(self,*args,**kw):
    self.key_dict = {}
    super(Dict,self).__init__(*args,**kw)
  def __setitem__(self,k,v):
    self.key_dict[k] = k
    super(Dict,self).__setitem__(k,v)
  def get_key(self,key):
    return self.key_dict[key]

class Str(str): pass

>>> friends = Dict()
>>> friends[Str('John')] = ['Bill','Jack','Isabelle']
>>> friends[Str('Jim')] = ['John','Bob']
>>> friends[Str('Isabelle')] = ['John','Christine','Anabelle']
>>> friends.get_key('John').hair_color = 'brown'
>>> friends.get_key('Jim').hair_color = 'red'
>>> friends.get_key('Isabelle').hair_color = 'green'
>>> friends
{'Jim': ['John', 'Bob'], 'John': ['Bill', 'Jack', 'Isabelle'], 'Isabelle': ['John', 'Christine', 'Anabelle']}
>>> friends.get_key('Isabelle').hair_color
'green'

A more sensible, realistic example are attributes of graph nodes (e.g. color, shape, etc)  in the networkx package, where node objects are stored as keys of (nested) dictionaries.

Is there any particular reason why the built-in dictionary does not define a get_key() method, but only keys(), iterkeys(), and has_key() ?

Cheers,

Andreas

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/a8e0a764/attachment.html>

From dannox at gmail.com  Sun Oct  7 12:35:22 2007
From: dannox at gmail.com (whatazor)
Date: Sun, 07 Oct 2007 16:35:22 -0000
Subject: newbie swig c++ to python
Message-ID: <1191774922.015497.265680@57g2000hsv.googlegroups.com>

Hi all,
I must wrap some c++ code in python with swig. I try the swig examples
for VC++ , but when I build the project
it gives me that error:
example fatal error LNK1181: cannot open input file 'C:\Programmi
\Python25\libs.obj'

Any idea?

thank you

w



From dstromberglists at gmail.com  Fri Oct 12 16:15:40 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Fri, 12 Oct 2007 13:15:40 -0700
Subject: Declarative properties
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
	<5n7948Fghr61U9@mid.uni-berlin.de>
Message-ID: <pan.2007.10.12.20.15.39.214191@gmail.com>

On Thu, 11 Oct 2007 18:42:16 +0000, Marc 'BlackJack' Rintsch wrote:


>> The "baggage" of possibly fixing (AKA "generalizing") how your attributes
>> are accessed is something you lug around while your deadline looms.
> 
> Sorry I don't get it.  If I want to customize the access to a "normal"
> attribute I simply turn it into a property.

You're right, properties are an intersting language feature.  I wasn't
aware of them until today.

I'm not sure I believe they are better than disallowing public attributes
and requiring setters and getters, but they do appear to address the same
issue: the needless change in API when your internal representation
needs to change.

Apologies.




From jjl at pobox.com  Sat Oct 27 12:50:51 2007
From: jjl at pobox.com (John J. Lee)
Date: Sat, 27 Oct 2007 16:50:51 GMT
Subject: urllib2 weirdness when https_proxy environment variable is
	exported
References: <1193357737.787398.135110@q3g2000prf.googlegroups.com>
Message-ID: <87wst8sdqq.fsf@pobox.com>

Devraj <devraj at gmail.com> writes:

> I have been extensively using Python's urllib2 while developing a
> project with the Google Data API. The Google Data API uses httplib to
> place all of its requests. However I have been using urllib2 and some
> handlers that I discovered in an ASPN article to handle HTTPS proxies
> in my code.
>
> The Google Data API relies on an environment variable called
> https_proxy to get information about the proxy to be used. However
> urllib2 starts spitting out the BadStatusLine exception if the
> https_proxy environment variable is found.
[...]

This is because urllib2 does not support HTTPS proxies (neither does
urllib).  See Python cookbook for a hack to get it working.


John


From geraint.williams at gmail.com  Mon Oct 29 18:57:58 2007
From: geraint.williams at gmail.com (GHZ)
Date: Mon, 29 Oct 2007 22:57:58 -0000
Subject: "and" and "or" on every item in a list
Message-ID: <1193698678.288593.314870@k79g2000hse.googlegroups.com>

Is this the best way to test every item in a list?


def alltrue(f,l):
    return reduce(bool.__and__,map(f,l))

def onetrue(f,l):
    return reduce(bool.__or__,map(f,l))

>>> alltrue(lambda x:x>1,[1,2,3])
False
>>>
>>> alltrue(lambda x:x>=1,[1,2,3])
True
>>>

Thanks



From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 23:16:34 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 05:16:34 +0200
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <rjadg35sdcl928mqv52buk8livucrerivs@4ax.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>	<13gcjeqbhmh152c@corp.supernews.com>	<mailman.1586.1191596681.2658.python-list@python.org>	<13gcogrm9uloj4b@corp.supernews.com>
	<mailman.1591.1191601088.2658.python-list@python.org>
	<47069e40$0$16410$426a74cc@news.free.fr>
	<pn8dg3d7iu3fpn7pthn3orlmvvqmqvfi7v@4ax.com>
	<4706a7a9$0$12477$426a34cc@news.free.fr>
	<rjadg35sdcl928mqv52buk8livucrerivs@4ax.com>
Message-ID: <4706ad5e$0$30618$426a74cc@news.free.fr>

Wayne Brehaut a ?crit :
> On Thu, 04 Oct 2007 04:52:13 +0200, Bruno Desthuilliers
> <bdesth.quelquechose at free.quelquepart.fr> wrote:
> 
> 
>>Wayne Brehaut a ?crit :
>>
>>>On Thu, 04 Oct 2007 04:12:04 +0200, Bruno Desthuilliers
>>><bdesth.quelquechose at free.quelquepart.fr> wrote:
>>>
>>>
>>>
>>>>J. Clifford Dyer a ?crit :
>>
>>(snip)
>>
>>>>>Well, it's also unpythonic to start numbering a sequence at 1, but
>>>>>it's clearly the right thing to do in this case.
>>>>
>>>>As far as I'm concerned, if I had to number a magazine about 
>>>>programming, I'd obviously start with 0.
>>>
>>>And since the "first" issue is free that would be best here too.
>>>
>>>
>>>>Then it would be n?1, n?10, 
>>>>n?11, n?100 etc !-)
>>>
>>>But probably with enough leading zeros to last the expected lifetime
>>>(8 bits should about do it?)  so they'd sort properly:
>>>
>>>0000 0000
>>>0000 0001
>>>etc.
>>
>>Mmm... sort of reminds me of y2k.
> 
> 
> Funny, I was thinking IPv4.

Lol. At the exact moment I hit the 'send' button, I thought of some 
(in)famous quote about 640k for everyone !-)

And to answer your first point, 0, 1, 10, 11, 100 etc *does* sort 
properly...


From irmen.NOSPAM at xs4all.nl  Thu Oct 11 19:34:40 2007
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Fri, 12 Oct 2007 01:34:40 +0200
Subject: RMI with Pyro et al
In-Reply-To: <mailman.77.1192108312.927.python-list@python.org>
References: <mailman.77.1192108312.927.python-list@python.org>
Message-ID: <470eb31d$0$231$e4fe514c@news.xs4all.nl>

Sells, Fred wrote:
> Diez B. Roggisch wrote 
> . Why do you want that (hot deploy)
>> anyway? Does startuptime of a script really bother you? 
>> shouldn't take 
>> more than a few seconds.
> 
> My primary need is development/debug.  I'm a Pyro newbie and I add a
> feature and then test.  The only way I've found to kill the Pyro server
> on XP is to open the task manager and kill the python task (hopefully
> the right one).
> 
>  
> 

How do you start "the pyro server"?
Are you talking about the Windows Services that you can simply start/stop with:

net start PyroNS
net start PyroES

net stop PyroNS
net stop PyroES

??

Often it is way simpler to just use the pyro-ns.cmd / pyro-es.cmd batch files and stop 
the server with a simple ^C in the console window.


-irmen


From laurent.pointal at limsi.fr  Tue Oct 16 07:35:45 2007
From: laurent.pointal at limsi.fr (Laurent Pointal)
Date: Tue, 16 Oct 2007 13:35:45 +0200
Subject: ANN: magnitude 0.9.1
In-Reply-To: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
Message-ID: <ff27mh$n3v$1@news2.u-psud.fr>

juan at juanreyero.com a ?crit :
> I am happy to announce the first release of magnitude, a
> library for computing with physical quantities. It is
> released under the Apache v. 2 license.
> 
> A physical quantity is a number with a unit, like 10
> km/h. Units can be any of the SI units, plus a bunch of
> non-SI, bits, dollars, and any combination of them. They can
> include the standard SI prefixes. Magnitude can operate with
> physical quantities, parse their units, and print them. You
> don't have to worry about unit consistency or conversions;
> everything is handled transparently. By default output is
> done in basic SI units, but you can specify any output unit,
> as long as it can be reduced to the basic units of the
> phisical quantity.
> 
> Home page: http://juanreyero.com/magnitude/ 
> 
> Feedback is appreciated.

How does it compare to the scalar module ?
(see http://russp.us/scalar.htm )



From commander_coder at hotmail.com  Thu Oct 11 20:02:56 2007
From: commander_coder at hotmail.com (commander_coder at hotmail.com)
Date: Thu, 11 Oct 2007 17:02:56 -0700
Subject: Advice on long running processes
In-Reply-To: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>
References: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>
Message-ID: <1192147376.075063.54580@i38g2000prf.googlegroups.com>

Thank you to folks for the replies.

Jim



From gagsl-py2 at yahoo.com.ar  Fri Oct 19 18:18:45 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 19 Oct 2007 19:18:45 -0300
Subject: ConfigParser preserving file ordering
References: <200710190123.39177.Frank.Aune@broadpark.no>
	<ff921p$116$1@ger.gmane.org>
	<200710191301.30573.Frank.Aune@broadpark.no>
	<59e9fd3a0710190616r59c7eb2v1c66a1bad8798922@mail.gmail.com>
Message-ID: <op.t0gtlju3x6zn5v@gabriel2.softlabbsas.com.ar>

En Fri, 19 Oct 2007 10:16:00 -0300, Andrew Durdin <adurdin at gmail.com>  
escribi?:

> As for updating ConfigParser -- like most other changes, it probably
> needs a champion.

ConfigParser is so dumb that should be burned to death and rebuilt from  
the ashes.

-- 
Gabriel Genellina



From jipjip at arcor.de  Fri Oct 19 07:09:22 2007
From: jipjip at arcor.de (jipjip)
Date: Fri, 19 Oct 2007 13:09:22 +0200
Subject: General module name clash problem?
Message-ID: <4718904e$0$30373$9b4e6d93@newsspool4.arcor-online.net>

Hello all,
just new to python..

Suppose i have a directory only with an empty file "pickle.py".
In this directory i start the python interpreter and say:
 >>> import pygame

What happens?
I get an error message:

Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/usr/lib/python2.5/site-packages/pygame/__init__.py", line 147, 
in <module>
     try: import pygame.surfarray
   File "/usr/lib/python2.5/site-packages/Numeric/Numeric.py", line 536, 
in <module>
     class Unpickler(pickle.Unpickler):
AttributeError: 'module' object has no attribute 'Unpickler'

Why?
Because pygame needs a module namend "pickle.py"!
The first location python searches is my directory, so
the library module "pickle.py" is overwritten with my "pickle.py".

The cause of this error is not that i import 2 different modules with 
the same name, it's only because there is a file in my directory with 
the same name of a module somewhere in the imported module tree.

I mean, this is a general problem.
Must i look for every module that gets importet for not clashing
with my module files residing in the calling directory?

Is the python package system insufficient, is there something wrong with 
my opinions or do i need a "gotcha"?

Thank's in advance,
jipjip


From nickel_and_dime_2death at yahoo.com  Sat Oct 13 14:32:27 2007
From: nickel_and_dime_2death at yahoo.com (nickel_and_dime_2death at yahoo.com)
Date: Sat, 13 Oct 2007 11:32:27 -0700
Subject: Foreign Character Problems In Python 2.5 and Tkinter
In-Reply-To: <mailman.170.1192288943.927.python-list@python.org>
References: <mailman.160.1192262504.927.python-list@python.org>
	<pan.2007.10.13.12.25.41.721728@luukku.com>
	<mailman.168.1192281215.927.python-list@python.org>
	<pan.2007.10.13.13.43.54.219741@luukku.com>
	<mailman.170.1192288943.927.python-list@python.org>
Message-ID: <1192300347.953402.172130@k35g2000prh.googlegroups.com>

On Oct 13, 5:22 pm, "Juha S." <jusa... at gmail.com> wrote:
> Thanks! Opening and saving the file with the iso-8859-1 codec seems to
> handle the characters correctly. Now the only problem left are the
> missing newlines in the output file. I tried googling for the iso code
> for newline and entering it in a Python string as '\x0A' but it doesn't
> work in the output file which still loses the newlines.
>
> Janne Tuukkanen wrote:
> > Sat, 13 Oct 2007 16:13:21 +0300, Juha S. kirjoitti:
>
> >> Thanks for the reply. I made changes to my code according to your
> >> example. Now any Scandinavian characters that are outputted by the
> >> program are missing in the Tk text box.
>
> >>             file = codecs.open(filename, 'r', 'utf-8', 'ignore')
>
> >  Remove that 'ignore'. If you then get error which complains,
> > that utf-8 codec can't handle the file, you've found the culprit.
> > The file might be in iso-8859-1.
>
> >    JanneT

As a noob I've struggled a bit, but basically what I've come up with
is => if the information is strings and especially strings stored in
any style of list/dict, it takes a loop to write the lines to file
myfile[ i ] + '\n' to keep each line for Python I/O purposes. If
you're done with Python manipulation and want WIN, MAC, or UNIX to
begin file I/O, then, you need the consideration of <newline-char>
from the os module, or code it in yourself, e.g. '\r\n'. The fact you
are using codec iso-latin-1 (or iso-8859-1) doesn't change the '\n'
from Python's viewpoint -- that is: '\n' is still '\n'. When your
efforts are I/O with binary encoding the data, it's all Python's
viewpoint.



From hpt24 at t-online.de  Sat Oct 27 05:47:29 2007
From: hpt24 at t-online.de (Hans Peter Tkany)
Date: Sat, 27 Oct 2007 11:47:29 +0200
Subject: Dr. Wallach...
Message-ID: <1IliGP-0Ju7eX0@fwd26.t-online.de>

An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071027/55c5af4f/attachment.html>

From nedbat at gmail.com  Tue Oct 30 09:43:36 2007
From: nedbat at gmail.com (Ned Batchelder)
Date: Tue, 30 Oct 2007 06:43:36 -0700
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
In-Reply-To: <87bqaihmq7.fsf@benfinney.id.au>
References: <87bqaihmq7.fsf@benfinney.id.au>
Message-ID: <1193751816.298392.79070@d55g2000hsg.googlegroups.com>

I don't know how to extend coverage.py to do more extensive checking,
but I know it would be both difficult and fascinating.  To help spur
some thought, I've sketched out some problems with statement coverage:
http://nedbatchelder.com/blog/20071030T084100.html

--Ned.

On Oct 28, 6:56 pm, Ben Finney <b... at benfinney.id.au> wrote:
> Howdy all,
>
> Ned Batchelder has been maintaining the nice simple tool 'coverage.py'
> <URL:http://nedbatchelder.com/code/modules/coverage.html> for
> measuring unit test coverage.
>
> On the same site, Ned includes documentation
> <URL:http://nedbatchelder.com/code/modules/rees-coverage.html> by the
> previous author, Gareth Rees, who says in the "Limitations" section:
>
>     Statement coverage is the weakest measure of code coverage. It
>     can't tell you when an if statement is missing an else clause
>     ("branch coverage"); when a condition is only tested in one
>     direction ("condition coverage"); when a loop is always taken and
>     never skipped ("loop coverage"); and so on. See [Kaner 2000-10-17]
>     <URL:http://www.kaner.com/pnsqc.html> for a summary of test
>     coverage measures.
>
> So, measuring "coverage of executed statements" reports complete
> coverage incorrectly for an inline branch like 'foo if bar else baz',
> or a 'while' statement, or a 'lambda' statement. The coverage is
> reported complete if these statements are executed at all, but no
> check is done for the 'else' clause, or the "no iterations" case, or
> the actual code inside the lambda expression.
>
> What approach could we take to improve 'coverage.py' such that it
> *can* instrument and report on all branches within the written code
> module, including those hidden inside multi-part statements?
>
> --
>  \            "Technology is neither good nor bad; nor is it neutral." |
>   `\                       -Melvin Kranzberg's First Law of Technology |
> _o__)                                                                  |
> Ben Finney




From erik at myemma.com  Mon Oct 22 23:36:18 2007
From: erik at myemma.com (Erik Jones)
Date: Mon, 22 Oct 2007 22:36:18 -0500
Subject: web.py & postgresql error
In-Reply-To: <1193101575.928334.17790@e9g2000prf.googlegroups.com>
References: <1193101575.928334.17790@e9g2000prf.googlegroups.com>
Message-ID: <618A74F1-33CB-4CD2-B483-EE3EB0D94A5E@myemma.com>

On Oct 22, 2007, at 8:06 PM, dpholmes at gmail.com wrote:

> hi everyone, i'm very new to python and to this forum.  i'm actually
> just trying to work through the tutorial on webpy.org.  so far, so
> good, but as i tried to incorporate a postgresql database into the
> demo web app i'm receiving this error print out:
>
> Traceback (most recent call last):
>   File "/usr/lib/python2.5/site-packages/web/wsgiserver/__init__.py",
> line 624, in communicate
>     req.respond()
>   File "/usr/lib/python2.5/site-packages/web/wsgiserver/__init__.py",
> line 357, in respond
>     response = self.wsgi_app(self.environ, self.start_response)
>   File "/usr/lib/python2.5/site-packages/web/httpserver.py", line 200,
> in __call__
>     return self.app(environ, xstart_response)
>   File "/usr/lib/python2.5/site-packages/web/http.py", line 255, in
> __call__
>     return self.func(e, o)
>   File "/usr/lib/python2.5/site-packages/web/webapi.py", line 302, in
> wsgifunc
>     _load(env)
>   File "/usr/lib/python2.5/site-packages/web/webapi.py", line 258, in
> _load
>     load()
>   File "/usr/lib/python2.5/site-packages/web/webapi.py", line 253, in
> load
>     db.connect(**config.db_parameters)
>   File "/usr/lib/python2.5/site-packages/web/db.py", line 265, in
> connect
>     import pgdb as db
> ImportError: No module named pgdb
>
> any thoughts would be greatly appreciated.
> thanks,
> doug

Apparently you don't have pgdb installed or it's path isn't in your  
PYTHONPATH environment variable.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From rcdailey at gmail.com  Thu Oct  4 11:55:32 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 4 Oct 2007 10:55:32 -0500
Subject: RegEx question
Message-ID: <496954360710040855t7fd68a32o75aed48a9fd91bf2@mail.gmail.com>

Hi,

The following regex (Not including the end quotes):

"@param\[in|out\] \w+ "

Should match any of the following:

@param[in] variable
@param[out] state
@param[in] foo
@param[out] bar


Correct? (Note the trailing whitespace in the regex as well as in the
examples)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/f0f3ac60/attachment.html>

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 24 08:27:14 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 24 Oct 2007 14:27:14 +0200
Subject: name space problem
In-Reply-To: <1193193278.364108.256770@y27g2000pre.googlegroups.com>
References: <1193179470.243479.53270@q3g2000prf.googlegroups.com>
	<1193181625.770328.161650@v29g2000prd.googlegroups.com>
	<1193193278.364108.256770@y27g2000pre.googlegroups.com>
Message-ID: <471f3a21$0$4994$426a74cc@news.free.fr>

BBands a ?crit :
> On Oct 23, 4:20 pm, marek.ro... at wp.pl wrote:
>> Hello. Indeed the doStuff function in the doStuff module can't do 'a.b
>> = 0' (the double dot was just a typo, right?)
> 
> Yes.
> 
>> because it doesn't know anything about an object named a.
> 
> I was trying to understand why it worked when written in, but not when
> included.

because it's *not* "included" ? Python's imports are not includes, and 
the notion of "global" namespace in Python really means module's namespace.

>> I think the right solution would be not to use 'a' as a global
>> variable, but rather to pass it as an explicit parameter to the
>> function.
> 
> Does doing this make a copy of a?

No. Python nevers copy anything unless very explicitelly asked to. But 
remember that names are locals to their namespaces, so that rebinding 
'a' in doStuff won't affect the object originally bound to 'a' (mutating 
the object bound to 'a' will of course work as expected).



From joanmg at gmail.com  Tue Oct 16 04:29:18 2007
From: joanmg at gmail.com (Joan M. Garcia)
Date: Tue, 16 Oct 2007 10:29:18 +0200
Subject: ANN: magnitude 0.9.1
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<873awb5wgw.fsf@benfinney.id.au>
Message-ID: <m2tzor5uox.fsf@antares.emea.hpqcorp.net>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:
> Please don't ever recommend 'from foo import *' in end-user
> documentation. It's generally a bad practice and should only be done
> when the individual programmer understands the tradeoffs involved;
> putting it in the documentation for a module is setting a poor
> example.

Got it, and solved.  Thanks.  I have been carelessly using
it like that for a long time (I was, after all, guilty of
any name it imported into my namespace) and I didn't think
about the implications for others in the documentation. 

jm


From bj_666 at gmx.net  Sun Oct 14 13:49:38 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 14 Oct 2007 17:49:38 GMT
Subject: Simple Text Processing Help
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192371913.444185.65650@q3g2000prf.googlegroups.com>
	<1192381026.960026.129730@i13g2000prf.googlegroups.com>
Message-ID: <5nf35iFhieq6U2@mid.uni-berlin.de>

On Sun, 14 Oct 2007 16:57:06 +0000, patrick.waldo wrote:

> Thank you both for helping me out.  I am still rather new to Python
> and so I'm probably trying to reinvent the wheel here.
> 
> When I try to do Paul's response, I get
>>>>tokens = line.strip().split()
> []

What is in `line`?  Paul wrote this in the body of the ``for`` loop over
all the lines in the file.

> So I am not quite sure how to read line by line.

That's what the ``for`` loop over a file or file-like object is doing. 
Maybe you should develop your script in smaller steps and do some printing
to see what you get at each step.  For example after opening the input
file:

for line in input:
    print line     # prints the whole line.
    tokens = line.split()
    print tokens   # prints a list with the split line.

> tokens = input.read().split() gets me all the information from the
> file.

Right it reads *all* of the file, not just one line.

>  tokens[2:-1] = [u' '.join(tokens[2:-1])] works just fine, like
> in the example; however, how can I loop this for the entire document?

Don't read the whole file but line by line, just like Paul showed you.

> Also, when I try output.write(tokens), I get "TypeError: coercing to
> Unicode: need string or buffer, list found".

`tokens` is a list but you need to write a unicode string.  So you have to
reassemble the parts with '|' characters in between.  Also shown by Paul.

Ciao,
	Marc 'BlackJack' Rintsch


From nick.bastin at gmail.com  Tue Oct  9 03:03:20 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Tue, 9 Oct 2007 03:03:20 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191909945.520161.179960@o3g2000hsb.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
	<1191909945.520161.179960@o3g2000hsb.googlegroups.com>
Message-ID: <66d0a6e10710090003j21ae5328ka9cb331214cd89f2@mail.gmail.com>

On 10/9/07, Sanjay <skpatel20 at gmail.com> wrote:
> > It's not clear at all from the OPs post exactly what functionality he
> > is trying to derive from the timezone. Since timezones (obviously)
> > contain more information than just the GMT offset (otherwise we
> > wouldn't even have them), he may very well want to use the timezone
> > given by the user to display correct local time to them. In this case,
> > the actual, correct, political timezone is important, not just the GMT
> > offset.
>
> I am developing a website which would be accessed by members all over
> the world. They can exchange data having some time fields, say
> 'schedule for next meeting'. Whenever somebody feeds some time field,
> my application converts it to UTC and stores in the database. Later,
> when the data is to be displayed to some member, the application
> converts it to his local time, and displays the data.

Yeah, you are, unfortunately, probably going to have to deal with the
entirety of this time zone data in this case.  You can obviously elide
some information for countries you don't intend to support, but
there's no particular reason to exclude a potential market.

I would say the easiest way to get people to choose their own time
zone is to ask them their country, and then filter their choices by
that.  (That would get you down to less than a dozen choices in almost
every country in the world).

--
Nick


From uymqlp502 at sneakemail.com  Wed Oct 17 16:26:43 2007
From: uymqlp502 at sneakemail.com (uymqlp502 at sneakemail.com)
Date: Wed, 17 Oct 2007 13:26:43 -0700
Subject: version 1.4 of scalar class released
Message-ID: <mailman.177.1192722835.13605.python-announce-list@python.org>

Version 1.4 of my scalar class is available at

http://RussP.us/scalar.htm

No major changes. I have corrected the "repr" function to make it more
useful, and I have added a "unit_type" function that returns the type
of a unit (e.g., time, length, force). The unit_type function is
intended mainly for interactive, "calculator-style" use.

If you do scientific or engineering calculations or programming,
please check out my scalar class. I think you'll like it.

It will relieve you of the burden of keeping track of units ("darn, I
can't remember if that angle is in radians or degrees?"). And the
really nifty thing about it is that, when you want high execution
speed for production runs, you can easily switch off the units with a
simple change of the import line. All the unit objects will then be
replaced with bulit-in types (typically floats), and your output will
be unchanged, but you will notice a dramatic speedup.

A complete user guide is available in both pdf and html formats. Give
it a try and let me know what you think!

--Russ P.



From larsgwest at gmail.com  Tue Oct  9 10:34:02 2007
From: larsgwest at gmail.com (lgwe)
Date: Tue, 09 Oct 2007 07:34:02 -0700
Subject: Problem with argument parsing
Message-ID: <1191940442.108905.292810@50g2000hsm.googlegroups.com>

I have a python-script: myscript, used to start a program on another
computer and I use OptionParser in optpars.
I use it like this: myscript -H host arg1 -x -y zzz
I would like OptionParser to ignore all arguments after arg1, because
these are options that should be used by the program started on the
oter computer arg1 -x -y zzz.
One solution is to write: myscript -H host "arg1 -x -y zzz"
But is it in some way possible to instruct OptionParser to ignore -x -
y zzz without  the "..."?



From informfr at gmail.com  Thu Oct  4 13:27:43 2007
From: informfr at gmail.com (JL)
Date: Thu, 04 Oct 2007 17:27:43 -0000
Subject: pickle and __slots__
In-Reply-To: <1191518052.724013.317750@w3g2000hsg.googlegroups.com>
References: <1191513088.578638.90270@d55g2000hsg.googlegroups.com>
	<3k8Ni.3410$4V6.2826@newssvr14.news.prodigy.net>
	<1191518052.724013.317750@w3g2000hsg.googlegroups.com>
Message-ID: <1191518863.637478.203190@r29g2000hsg.googlegroups.com>

I added the following method to the 2 subclasses of
asyncore.dispatcher and asynchat.async_chat and now pickle works:

    def __getstate__(self):
        return

Later I will probably modify this method so it returns something more
interesting.
Thanks for your help! I was confused because I am not sure what can be
pickled or not.



From larry.bates at websafe.com  Wed Oct 10 17:05:50 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 10 Oct 2007 16:05:50 -0500
Subject: howto add a sub-directory to the searchpath / namespace ?
In-Reply-To: <mailman.45.1192048895.927.python-list@python.org>
References: <mailman.45.1192048895.927.python-list@python.org>
Message-ID: <Np-dnQSN1Ysyo5DanZ2dnUVZ_tbinZ2d@comcast.com>

stef mientki wrote:
> hello,
> 
> my program has become a bit large,
> and now I want to split the files over several subdirectories.
> So in the example shown below, I just moved the files f1.py and f2.py to 
> a deeper subdirectory.
> 
> basedirectory\
>    mainfile.py
>    file1.py
>    file2.py
>    subdir1\
>       __init__.py
>       f1.py
>       f2.py
> 
> Now I don't want (even can't) change my program,
> to change imports from
>    from f1 import something
> into
>    from subdir1.f1 import something
> simply because f1.py and f2.py are python files dropped by users
> and I do not know on forehand what will be dropped.
> 
> I looked into the description of __init__.py,
> in the hope I could make f1.py and f2.py available as if they were in 
> the basedirectory,
> but i couldn't find a way.
> 
> Is there a way to make f1.py and f2.py available as if they were located 
> in the base directory,
> without knowing their names (so in general all py-files in the subdir1)  ??
> 
> thanks,
> Stef Mientki
> 
> 
Put basedirectory\subdir in the PYTHONPATH environment variable or

os.path.append(r'basedirectory\subdir1')

in the body of your program.

-Larry


From lasses_weil at klapptsowieso.net  Sun Oct  7 13:37:25 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 19:37:25 +0200
Subject: Top Programming Languages of 2013
In-Reply-To: <mailman.1645.1191774738.2658.python-list@python.org>
References: <mailman.1621.1191737112.2658.python-list@python.org>	<1191772154.784564.138370@r29g2000hsg.googlegroups.com>	<47090141$0$4522$9b4e6d93@newsspool3.arcor-online.net>
	<mailman.1645.1191774738.2658.python-list@python.org>
Message-ID: <47091955$0$4530$9b4e6d93@newsspool3.arcor-online.net>

Byung-Hee HWANG wrote:
> On Sun, 2007-10-07 at 17:54 +0200, Wildemar Wildenburger wrote:
>> import friends
>> import sex
>>
>> try:
>>      sex.have()
>> except ErrectionError, PrematureError:
>>      pass
>> finally:
>>      sex.brag(friends)
> 
> Good! But......................... 
> I think a kiss is elegant more than a sex.
> What do you think of?
> 

Elegant maybe, but for Python to stand out (he...), it needs something 
above newbie-level.
Mind you that this is just a basic (and rather cheap) operation from the 
standard libs of 2013. More pythonic alternatives (like sex.strangle.*) 
will be provided as well.

/W


From MrJean1 at gmail.com  Tue Oct 30 01:29:54 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Tue, 30 Oct 2007 05:29:54 -0000
Subject: Solaris 10 + Sun Studio 12 Pyrhon 2.4.4 64-bit build problem
In-Reply-To: <1193717706.876266.78150@v23g2000prn.googlegroups.com>
References: <1193637835.936397.307160@e9g2000prf.googlegroups.com>
	<1193684775.643350.208230@y27g2000pre.googlegroups.com>
	<1193717706.876266.78150@v23g2000prn.googlegroups.com>
Message-ID: <1193722194.676321.46070@k35g2000prh.googlegroups.com>

Here is a better way to build Python on Solaris, both 32- and 64-
bit.

 <http://ccnuma.anu.edu.au/~wpc/blog/programming/building-python.html>

since it builds both the binary and make test on my Ultra 20 machine.
In my case 26 tests pass, 1 failed, 44 are skipped and there are 6 u
expected skips.  The latter are expected and due to missing packages,
like Tcl.

Use the instructions from this site and forget mine.  But it may still
be necessary to patch the ./Include/pyport.h file as shown in my
previous message.

/Jean Brouwers



On Oct 29, 9:15 pm, MrJean1 <MrJe... at gmail.com> wrote:
> Here is one way to build a 64-bit Python binary on Solaris 10 using
> SUN's compilers**.  This is probably not the recommended procedure but
> it does create a partial, expected result.
>
> Here are the 4 steps I used:
>
> 1 - Run  ./configure --without-gcc  --with-cxx-main=CC  --enable-64-
> bit  ....
>
> 2 - Edit the generated Makefile and change 3 lines
>
>     CC     = cc -xtarget=opteron -xarch=amd64
>     CXX    = CC -xtarget=opteron -xarch=amd64
>     MAINCC = CC -xtarget=opteron -xarch=amd64
>
>     The -xtarget and -xarch flags must be adjusted for UltraSparc.
>
> 3 - Edit python source file ./Include/pyport.h before line 728 (in
> Python 2.5.1) as follows.
>
>     Add these 3 lines:
>
>     #ifndef __GNUC__  /* non-GNU C/C++, like SUN */
>     # undef LONG_BIT
>     #endif
>
>     such that LONG_BIT is #define'd next
>
>     #ifndef LONG_BIT
>     #define LONG_BIT (8 * SIZEOF_LONG)
>     #endif
>
>     before this error message can occur
>
>     #if LONG_BIT != 8 * SIZEOF_LONG
>     /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some
> recent
>      * 32-bit platforms using gcc.  We try to catch that here at
> compile-time
>      * rather than waiting for integer multiplication to trigger bogus
>      * overflows.
>      */
>     #error "LONG_BIT definition appears wrong for platform (bad gcc/
> glibc config?)."
>     #endif
>
> 4 - Run make and check the resulting Python binary with  file ./
> python.
>
> However, make test still fails and that will require further
> investigation.
>
> /Jean Brouwers
>
> **) Sun C/C++ 5.8 2005/10/14 on an Ultra 20 Opteron machine
>
> On Oct 29, 12:06 pm, MrJean1 <MrJe... at gmail.com> wrote:> Building 64-bit Python is still elusive. I tried various ways to add  -
> > xtarget=opteron -xarch-amd64  to the C/C++ flags but that still fails
> > to produce a 64-bit build.  Changing the Makefile is not sufficient
> > since that causes compilation errors.
>
> > It looks like the ./configure command must run with those additional
> > flags.  Passing the flags in environment variables defining CC and CXX
> > only works for CXX.  The additional flags do not appear on the C
> > compiler command lines.
>
> > /Jean Brouwers
>
> > On Oct 28, 11:03 pm, plumb and tree <plumbandt... at gmail.com> wrote:
>
> .....




From bj_666 at gmx.net  Wed Oct 24 08:46:01 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 24 Oct 2007 12:46:01 GMT
Subject: Better writing in python
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <5o8t49Flf4doU3@mid.uni-berlin.de>

On Wed, 24 Oct 2007 12:09:40 +0000, Alexandre Badez wrote:

> I'm just wondering, if I could write a in a "better" way this code
> 
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
> 
> I think there is a better way, but I can't see how...

Drop the prefixes. `l` is for list?  `d` is for what!?  Can't be
dictionary because the code doesn't make much sense.

Where is `cls` coming from?

Ciao,
	Marc 'BlackJack' Rintsch


From rcdailey at gmail.com  Thu Oct  4 15:11:08 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Thu, 4 Oct 2007 14:11:08 -0500
Subject: Off Topic: Gmail hates newsgroups!!!
Message-ID: <496954360710041211x696ebebdj3105e4271372c332@mail.gmail.com>

I don't know how many other people subscribe to the python mailing list and
use the mailing list using the web-based interface for Gmail, but I do. I
use it mainly because Gmail doesn't support IMAP and I use my email from
multiple locations. Gmail web based works fine except that it starts your
caret off BEFORE the reply instead of AFTER it. They don't even have an
option to change this either. I'm just ranting this because it upsets me :)

If anyone might know of a firefox plugin or something to fix this I'd be
more than willing to use it. I've looked a bit myself for such an extension
and I've been unsuccessful in finding one.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071004/a2b03bdc/attachment.html>

From carsten at uniqsys.com  Fri Oct 12 07:54:21 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 12 Oct 2007 07:54:21 -0400
Subject: Is this a bug of the lambda function
In-Reply-To: <826b8ca90710112200r732345bxe504bb6a147ec725@mail.gmail.com>
References: <826b8ca90710112200r732345bxe504bb6a147ec725@mail.gmail.com>
Message-ID: <20071012113413.M90732@uniqsys.com>

On Fri, 12 Oct 2007 01:00:47 -0400, Zhu Wayne wrote 
> Hi, 
> I have a short code which gives me strange results, the code is as follows: 
> 
> f = [lambda x: None]*5 
> for j in range(0, 5): 
>      f[j] = lambda x: float(j)*x 
> [...]
> It seems only when I use the index j (which is declear with the lambda
> function), I can get expected answer [...]

'j' is not declared with the lambda function. Inside the lambda, 'j' is a
global name. Global names inside a function body are looked up when the
function is called, not when the function is defined.

You are actually defining five identical functions that look up the global
name j, take its float value, and multiply that times the argument x.
If the name 'j' is deleted, the functions won't run anymore. Observe:

>>> f = [lambda x: None]*5
>>> for j in range(0, 5):
...   f[j] = lambda x: float(j)*x
...
>>> del j
>>> f[0](1)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 2, in <lambda>
NameError: global name 'j' is not defined

To get the behavior you expect, you're going to have to cause the name 'j' to
be looked up (and frozen, so to speak) at the time the lambda is defined. One
way to do that is to use a default function argument:

>>> for j in range(0, 5):
...   f[j] = lambda x, inner_j=j: float(inner_j)*x
...
>>> del j
>>> f[0](1.)
0.0

Hope this helps,

--
Carsten Haese
http://informixdb.sourceforge.net



From alexandre.badez at gmail.com  Wed Oct 24 16:09:27 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: 24 Oct 2007 13:09:27 -0700
Subject: Better writing in python
In-Reply-To: <Xns99D396598BF42duncanbooth@127.0.0.1>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<1193232109.743432.97240@i13g2000prf.googlegroups.com>
	<Xns99D396598BF42duncanbooth@127.0.0.1>
Message-ID: <1193238580.776261.65170@k35g2000prh.googlegroups.com>

On Oct 24, 3:46 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> For a 'python like' look lose the Hungarian notation (even Microsoft
> have largely stopped using it)

I wish I could.
But my corporation do not want to apply python.org coding rules

> increase the indentation to 4 spaces,

Well, it is in my python file.
I do not do it here, because I'm a bit lazy.

> and also get rid of the spurious parentheses around the result.

Thanks

> Otherwise it is fine: clear and to the point.

Thanks

>
> If you really wanted you could write something like:
>
> m, o = [], []
> for arg in cls.dArguments:
>     (m if cls.dArguments[arg]['mandatory'] else o).append(arg)
> return m, o
>
> Or even:
> m, o = [], []
> action = [o.append, m.append]
> for arg in cls.dArguments:
>     action[bool(cls.dArguments[arg]['mandatory'])](arg)
> return m, o
>
> but it just makes the code less clear, so why bother?

And finally thanks again ;)



From brainsludge at gmail.com  Tue Oct 23 18:01:50 2007
From: brainsludge at gmail.com (Brainsludge)
Date: Tue, 23 Oct 2007 22:01:50 -0000
Subject: Pythonw.exe exits prematurely
Message-ID: <1193176910.507794.136960@y27g2000pre.googlegroups.com>

Hello,

I am running WinXP SP2 with Python 2.5.1 and encountered the following
issue:

I wrote a script that logs into my mail server, and checks for new
messages every 20 seconds. When a new message is found, it displays a
Windows tool tip and prints a line to console indicating a new
message.

When I run the script with python.exe (console), the script runs fine
and checks for new messages in perpetuity (as it should). However,
when I run the script with pythonw.exe (no console), the script
prematurely exits after 10 or 15 minutes. For those 15 minutes, it
works as it should, displaying tool tips when new messages arrive.
Furthermore, when it exits prematurely, it appears to be exiting
gracefully (I have an exit routine that logs out of the mail server
and cleans up).

Does anyone know why this might be the case? The lines printed to
console are purely for diagnostic purposes. Otherwise, the two
processes should be identical.

Thanks!
Brian



From samfeltus at gmail.com  Mon Oct 29 02:15:43 2007
From: samfeltus at gmail.com (SamFeltus)
Date: Sun, 28 Oct 2007 23:15:43 -0700
Subject: Kudzu Version of SonomaSunshine
Message-ID: <1193638543.073656.13080@o3g2000hsb.googlegroups.com>

Funkiest SonomaSunshine page ever... A slim, trim 30ish MB page,
leaves time for fetching a beer or some coffee.  Takes about 10
minutes to watch.  Yet another example of using Django to generate
frilly, colorful Flash pages instead of more of that hypertext
stuff...

:)

http://samfeltus.com/kudzu/KudzuMan.html

###

http://samfeltus.com/site_index.html



From sethia.vishal at gmail.com  Wed Oct  3 17:45:49 2007
From: sethia.vishal at gmail.com (Vishal Sethia)
Date: Wed, 3 Oct 2007 14:45:49 -0700
Subject: Closing pexpect connections using threads
Message-ID: <2ee048b40710031445n5a9bed21ue374b36f6ef46a75@mail.gmail.com>

I am trying to write a multi-threaded program and use pexpect along
with it. All works fine until I try to close the connection handle.
That thread keeps waiting until the connection handle closes. It
actually never comes out of that command(connection_handle.close()).
If I manually kill it using kill command, the thread comes out and
quits otherwise it is in the wait state forever.

      def daemon(self):
              self.continue_hearbeats_lock.acquire()
              self.continue_heartbeats = True
              self.continue_hearbeats_lock.release()
              thrdHandshake = threading.Event()
             threading.Thread(target=self.RunTests,name='Run_Te  st_Thread')

             while self.continue_heartbeats:
                  pass
      def RunTests(self):
           self.createconnection()
           self.closeconnection()

      def closeconnection()
         self.log("Closing connection for device")
         self.connection_handle.close()


createconnection is a API which creates SSH connection to a remote machine.

And upon running, it hangs at this point
11:8:17:910 [DBG][CLEANUP]
11:8:17:910 [DBG]Closing Connection for device
<pexpect.spawn instance at 0xb7b373cc>


Any tips on what I am missing here?

Thanks,

-V


From python at rcn.com  Fri Oct 19 15:17:41 2007
From: python at rcn.com (Raymond Hettinger)
Date: Fri, 19 Oct 2007 12:17:41 -0700
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
In-Reply-To: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
References: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
Message-ID: <1192821461.555735.248970@v29g2000prd.googlegroups.com>

On Oct 19, 11:26 am, xkenneth <xkenn... at gmail.com> wrote:
> All,
>
>    Just a quick question. I want to be able to have a data structure
> that organizes data (timestamps I'm working with) sequentially, so
> that i can easily retrieve the first x amount of timeStamps without
> iterating over a list. My thought was to use a binary tree, am i
> overthinking the problem to try and implement this structure inside of
> python? I was also hoping this would already be done for me.

Try heapq.nsmallest().


Raymond




From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct 10 13:18:04 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 10 Oct 2007 19:18:04 +0200
Subject: multimethods decorator
In-Reply-To: <mailman.30.1192028986.927.python-list@python.org>
References: <mailman.30.1192028986.927.python-list@python.org>
Message-ID: <470d0914$0$24295$426a74cc@news.free.fr>

Gerardo Herzig a ?crit :
> Hi all. Im reading the Gido's aproach using decorators at
> http://www.artima.com/weblogs/viewpost.jsp?thread=101605
> 
> It looks good to me, but the examples shows the functionality using 
> functions.
> Now, when i try to give this decorator into a method, if i try the
> 
> class test(object):
>    @multimethod(...)
>    def met(self, ...):
> 
> The multimethod decorator needs the types of the arguments, and, if the 
> met method requires self as the first argument, the multimethod should 
> look like
> @multimethod(self.__class__, bla, ble) or some like that...
> 
> Now i know that im wrong, because i have this error
>  >@multimethod(self.__class__)
>  >NameError: name 'self' is not defined

Indeed. Neither self (which will only be known at method call time) nor 
even the 'test' class (which is not yet defined when the decorator is 
executed) are availables.

> So what would be the first argument to @multimethod??

A string ?-)

FWIW, there's already an implementation of multiple dispacth by Mr. Eby...


From lasses_weil at klapptsowieso.net  Thu Oct 25 17:09:20 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 25 Oct 2007 23:09:20 +0200
Subject: Python Windows Installation
In-Reply-To: <5oc23kFm4aqfU1@mid.individual.net>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
	<13i09eohrt6il52@corp.supernews.com>
	<5oc23kFm4aqfU1@mid.individual.net>
Message-ID: <47210600$0$4375$9b4e6d93@newsspool4.arcor-online.net>

Bjoern Schliessmann wrote:
> Dennis Lee Bieber wrote:
>> Besides preferring an install path that doesn't have spaces...
> 
> Which I don't understand (works best for me, and is best practice in
> Windows).
>  
Best practice? Says who?

/W


From "xaos\" at (none)  Thu Oct 11 14:45:56 2007
From: "xaos\" at (none) (none)
Date: Thu, 11 Oct 2007 14:45:56 -0400
Subject: problem with wxPanel derivation class
Message-ID: <mL-dnZ7Yg8368pPanZ2dnUVZ_oaonZ2d@comcast.com>

wxGlade created a simple Frame with a panel a sizer and 3 wxControls ,
saticText, TextCtrl, and a Button.

The resulting code works fine.

Now the problem.
I wish to make a separate class derrived from wxPanel that has the sized
and controls as above.  It jusst won't work


<code id="gladeGen" class="works_ok">
#!/usr/bin/env python
# -*- coding: ISO-8859-1 -*-
# generated by wxGlade 0.4cvs on Thu Oct 11 13:26:19 2007

import wx

class MyFrameOne(wx.Frame):
    def __init__(self, *args, **kwds):
        # begin wxGlade: MyFrameOne.__init__
        kwds["style"] = wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)
        self.panel = wx.Panel(self, -1)
        self.staticbox = wx.StaticBox(self.panel, -1, "StaticBox")
        self.label = wx.StaticText(self.panel, -1, "Field Name")
        self.textBox = wx.TextCtrl(self.panel, -1, "Field Value")
        self.button = wx.Button(self.panel, -1, "Edit")

        self.__set_properties()
        self.__do_layout()
        # end wxGlade

    def __set_properties(self):
        # begin wxGlade: MyFrameOne.__set_properties
        self.SetTitle("frame_1")
        self.label.SetMinSize((-1, 15))
        # end wxGlade

    def __do_layout(self):
        # begin wxGlade: MyFrameOne.__do_layout
        sizer_1 = wx.BoxSizer(wx.VERTICAL)
        sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
        sizer.Add(self.label, 0, wx.ALL, 3)
        sizer.Add(self.textBox, 0, wx.ALL, 3)
        sizer.Add(self.button, 0, wx.ALL, 3)
        self.panel.SetAutoLayout(True)
        self.panel.SetSizer(sizer)
        sizer.Fit(self.panel)
        sizer.SetSizeHints(self.panel)
        sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
        self.SetAutoLayout(True)
        self.SetSizer(sizer_1)
        sizer_1.Fit(self)
        sizer_1.SetSizeHints(self)
        self.Layout()
        # end wxGlade

# end of class MyFrameOne

## modified from BoaApp
class App(wx.App):
	def OnInit(self):
		wx.InitAllImageHandlers()
		self.main = MyFrameOne(None)
		self.main.Show()
		self.SetTopWindow(self.main)
		return True

def main():
	application = App(0)
	application.MainLoop()

if __name__ == '__main__':
	main()

</code>

<code id="modifiedFromGlade" class="fails">
#!/usr/bin/env python
# -*- coding: ISO-8859-1 -*-
#The commented out code from MyFrame was moved to class Panel \
# and appropriately modified by changing self.panel to self etc

import wx

class MyFrameTwo(wx.Frame):
	def __init__(self, *args, **kwds):
		# begin wxGlade: MyFrameTwo.__init__
		kwds["style"] = wx.DEFAULT_FRAME_STYLE
		wx.Frame.__init__(self, *args, **kwds)
##		self.panel = panel(self, -1)
		self.panel = Panel(self, -1)
		self.__set_properties()
		self.__do_layout()
		# end wxGlade

	def __set_properties(self):
		# begin wxGlade: MyFrameTwo.__set_properties
		self.SetTitle("frame_1")
		self.label.SetMinSize((-1, 15))
		# end wxGlade

	def __do_layout(self):
		# begin wxGlade: MyFrameTwo.__do_layout
		sizer_1 = wx.BoxSizer(wx.VERTICAL)
##		sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
##		sizer.Add(self.label, 0, wx.ALL, 3)
##		sizer.Add(self.textBox, 0, wx.ALL, 3)
##		sizer.Add(self.button, 0, wx.ALL, 3)
####		self.panel.SetAutoLayout(True)
##		self.panel.SetSizer(sizer)
##		sizer.Fit(self.panel)
##		sizer.SetSizeHints(self.panel)
		sizer_1.Add(self.panel, 1, wx.EXPAND, 0)
		self.SetAutoLayout(True)
		self.SetSizer(sizer_1)
		sizer_1.Fit(self)
		sizer_1.SetSizeHints(self)
		self.Layout()
		# end wxGlade

# end of class MyFrameTwo


class Panel (wx.Panel):
	def __init__(self, *args, **kwds):
		self.staticbox = wx.StaticBox(self, -1, "StaticBox")
		self.label = wx.StaticText(self, -1, "Field Name")
		self.textBox = wx.TextCtrl(self, -1, "Field Value")
		self.button = wx.Button(self, -1, "Edit")
		__doLayout()

	def __doLayout():
		sizer = wx.StaticBoxSizer(self.staticbox, wx.HORIZONTAL)
		sizer.Add(self.label, 0, wx.ALL, 3)
		sizer.Add(self.textBox, 0, wx.ALL, 3)
		sizer.Add(self.button, 0, wx.ALL, 3)
		
		# maybe comment this and uncommennt  frame2's corresponding line
		panel.SetAutoLayout(True)
		
		self.SetSizer(sizer)
		sizer.Fit(self.panel)
		sizer.SetSizeHints(self.panel)
		

## modified from BoaApp
class App(wx.App):
	def OnInit(self):
		wx.InitAllImageHandlers()
		self.main = MyFrameTwo(None)
		self.main.Show()
		self.SetTopWindow(self.main)
		return True

def main():
	application = App(0)
	application.MainLoop()

if __name__ == '__main__':
	main()

</code>

<errorMessages>
 /home/xaos/xpy/cnc/i2g/prefDialog/test/frame2.py
Traceback (most recent call last):
 File "/home/xaos/xpy/cnc/i2g/prefDialog/test/frame2.py", line 82, in ?
main()
 File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 78, in main
application = App(0)
 File
"/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
7473, in __init__
self._BootstrapApp()
 File
"/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
7125, in _BootstrapApp
return _core_.PyApp__BootstrapApp(*args, **kwargs)
 File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 72, in OnInit
self.main = MyFrameTwo(None)
 File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 13, in __init__
self.panel = Panel(self, -1)
 File "~/xpy/cnc/i2g/prefDialog/test/frame2.py", line 48, in __init__
self.staticbox = wx.StaticBox(self, -1, "StaticBox")
 File
"/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_controls.py",
line 990, in __init__
newobj = _controls_.new_StaticBox(*args, **kwargs)
TypeError: argument number 1: a 'wxWindow *' is expected, 'Panel' is
received
Script terminated.

</errorMessages>


It seems as though the complaint is that  a 'wxWindow *' is expected,
'Panel' is received
However, Panel IS a wx.Panel derivative which IS a wx.Window derivative!
Additionally, the methods in the code of Panel and MyFrameOne seem to be
identical.
I can't understand this. Anyone have any thoughts?

I'm using spe as an IDE

~S~

I taught myself everything I know about Python and wxPython in the lasst
week and I still don't know everything.




From python at rcn.com  Fri Oct 19 15:20:29 2007
From: python at rcn.com (Raymond Hettinger)
Date: Fri, 19 Oct 2007 12:20:29 -0700
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
In-Reply-To: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
References: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
Message-ID: <1192821629.395433.120660@v23g2000prn.googlegroups.com>

On Oct 19, 11:26 am, xkenneth <xkenn... at gmail.com> wrote:
> All,
>
>    Just a quick question. I want to be able to have a data structure
> that organizes data (timestamps I'm working with) sequentially, so
> that i can easily retrieve the first x amount of timeStamps without
> iterating over a list. My thought was to use a binary tree, am i
> overthinking the problem to try and implement this structure inside of
> python? I was also hoping this would already be done for me.

Try heapq.nsmallest().


Raymond




From electronixtar at gmail.com  Fri Oct 12 02:28:47 2007
From: electronixtar at gmail.com (est)
Date: Thu, 11 Oct 2007 23:28:47 -0700
Subject: Need suggestion on a GTalk Webservice
Message-ID: <1192170527.322337.323360@e9g2000prf.googlegroups.com>

I am writing a GTalkBot which provides a webservice
http://xxx.com/services/sendmessage.html

If someone POST some text to http://xxx.com/services/sendmessage.html
it will transfer the text to some friends on GTalk.

I tried using django's __init__.py function to build this service but
it seemed too stupid, here is the discuss thread:
http://groups.google.com/group/django-users/t/9e652d3ad37338fc

I thought about other solutions, running a GTalk daemon process and
using sockets to interact with django, but it seemed to COMPLEX to me.
Is there a simpler way to do this? a pythonic, simple way?



From hniksic at xemacs.org  Thu Oct 18 13:53:31 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 19:53:31 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
	<1192724835.765738.141790@q5g2000prf.googlegroups.com>
	<87przc1im7.fsf@mulj.homelinux.net>
	<1192726872.921589.249670@i38g2000prf.googlegroups.com>
Message-ID: <87lka01f8k.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> > When you load it, convert the string to dict with cPickle.loads
> > instead of with eval.
> 
> Yes i understand and this very very good ;)

Good!  :-)

> psycopg2.ProgrammingError: invalid byte sequence for encoding "UTF8":
> 0x80
> HINT:  This error can also happen if the byte sequence does not match
> the encoding expected by the server, which is controlled by
> "client_encoding".

Use a different column type for cache2's column, one more appropriate
for storing binary characters (perhaps BYTEA for Postgres).  Don't
forget to also use a bind variable, something like:

cursor.execute("INSERT INTO cache2 VALUES (?)", a)

Using "INSERT ... ('%s')" % (a) won't work, since the huge binary
string in a can contain arbitrary characters, including the single
quote.


From lasses_weil at klapptsowieso.net  Thu Oct  4 11:40:30 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 04 Oct 2007 17:40:30 +0200
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <mailman.1498.1191492616.2658.python-list@python.org>
References: <4703dfff$0$30966$426a74cc@news.free.fr>	<1191439792.666146.217150@d55g2000hsg.googlegroups.com>	<Xns99BED1C4FA1CFduncanbooth@127.0.0.1>	<mailman.1483.1191444874.2658.python-list@python.org>	<4704a38c$0$2769$426a74cc@news.free.fr>
	<mailman.1498.1191492616.2658.python-list@python.org>
Message-ID: <4705096e$0$7686$9b4e6d93@newsspool2.arcor-online.net>

Steve Holden wrote:
> Malheureusement, I see that absence of accented capitals is a modern 
> phenomenon that is regarded as an impediment to the language mostly 
> stemming from laziness of individual authors and inadequacy of low-end 
> typesetting software. I hadn't realised I was so up-to-date ;-)
> 
> So I will have to stop propagating this misinformation.
> 

Thats really weird, because I was taught in school that caps are not to 
be accented. In school! Big Brother is an idiot.

I'm equally ammused by the part of JBJ's link where it says that a 
missing acccent "fait h?siter sur la prononciation". Yeah, AS IF written 
French had anything to do with the way it is pronounced. Not that I 
don't like french, mind you. Everywhere outside action movies its pretty 
cool.

/W


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Oct  3 02:57:51 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 03 Oct 2007 08:57:51 +0200
Subject: Django for database driven web application is OK?
In-Reply-To: <mailman.1419.1191370572.2658.python-list@python.org>
References: <mailman.1419.1191370572.2658.python-list@python.org>
Message-ID: <47033d64$0$26126$426a74cc@news.free.fr>

cuongvt a ?crit :
> Hello 
> I'm new to both Django and Python. I'm mainly developing on PHP. 
> I tend to move to Django. But I want to confirm as below: 
> I heard that Django is mainly used for something like content management,
> CMS or something 
> like that and Rails is mainly for web applications. 
> So my question: is it true or not? 

Neither true nor false. A CMS *is* a web application. So this question 
doesn't make any sense.

Now it's true that Django was born mostly from CMS applications, and 
that it showed up in early versions. But the framework did evolved quite 
a lot since. FWIW, I did use it for a couple applications that have 
*nothing* todo with content management, and it was in the early versions !-)

> For rapid web application development, can I use Django to create intranet
> database web driven 
> application in my company for example: empoyees time management, goods
> import/export management, 
> salary management etc? 

Yes.



From sudharsh at gmail.com  Sun Oct 21 13:25:18 2007
From: sudharsh at gmail.com (Sudharshan S)
Date: Sun, 21 Oct 2007 22:55:18 +0530
Subject: Visibility of symbols between extension modules
In-Reply-To: <op.t0j3fgkix6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <1192965710.4525.16.camel@sup3rkiddo.einstein>
	<op.t0j3fgkix6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <1192987518.4525.38.camel@sup3rkiddo.einstein>

Hi,

On Sun, 2007-10-21 at 13:43 -0300, Gabriel Genellina wrote:
> En Sun, 21 Oct 2007 08:21:50 -0300, Sudharshan S <sudharsh at gmail.com>  
> escribi?:
>
> What is foo? a directory? And bar/_foo/baz, source files in C? Each one  
> defining a module object, or is there a single module - foo perhaps?
> 

Sorry, let me explain things a bit, foo is a directory with an
__init__.py to tell the interpreter that foo is a package and bar, _foo,
baz are shared extension objects, with their sources as bar.c, _foo.c
and baz.c, each with its own PyMODINIT_FUNC function.

> Is it a global C variable, or a module attribute? If you want it to be  
> available to other Python code, it should be a module attribute. In this  
> case, you retrieve the value using PyObject_GetAttrString as with any  
> other object.
> If it's a global C variable, once it's assigned it should be visible to  
> all (but decades of warning against using global variables can't be  
> wrong...)
> The single most common error using the Python API is getting wrong the  
> reference counts. If you lose a reference, your object may be garbage  
> collected. If you leak a reference, it will never be freed. Maybe this is  
> what happens here.

Its not a module attribute, Just a good old C structure. I thought I
couldnt use Py_INCREF on non-PyObjects. After a gdb session, I found
that my variable say spam, is initialised when the _foo.so is loaded but
the moment baz.so or something get loaded, it becomes NULL again,
although its still in the current scope. (found that on my backtrace). I
hope I am right with the loading of .so part. Is that how python works,
bringing all the symbols in the different modules in a common
namespace?. If so why is spam losing its value. 

I also found that the interpreter calls init functions of all the
modules the moment I do a "import foo". I also suspect my setup script
is kinda doing something wrong. 

> Perhaps if you explain a bit more what you want to do someone can give  
> some advice.

Well, my code should tell everything. But a word of request, try not to
laugh at it. 
http://projects.openmoko.org/plugins/scmsvn/viewcvs.php/python-gsmd/?root=python-openmoko
It would be great if anyone could take a look and guide me out of this. 
The variable in question is "lgsmh" defined in _pygsmd.c.

I really feel I am missing something very trivial yet important thing.

Thanks for all the help..
-- 
Sudharshan S
http://www.sudharsh.wordpress.com



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 31 17:58:52 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 31 Oct 2007 21:58:52 -0000
Subject: 3 number and dot..
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<1193863848.080615.191090@v3g2000hsg.googlegroups.com>
	<1193866745.406360.62830@z9g2000hsf.googlegroups.com>
Message-ID: <13ihukstk99jt86@corp.supernews.com>

On Wed, 31 Oct 2007 21:39:05 +0000, Abandoned wrote:

> On Oct 31, 10:50 pm, Roberto Bonvallet <rbonv... at gmail.com> wrote:
>> On 31 oct, 16:58, Abandoned <best... at gmail.com> wrote:
>>
>>
>>
>> > Hi..
>> > I want to do this:
>> > for examle:
>> > 12332321 ==> 12.332.321
>>
>> > How can i do?
>> >>> x = 12332321
>> >>> '.'.join(''.join(i for n, i in g) for k, g in
>> >>> groupby(enumerate(reversed(str(x))), lambda (n, i): n//3))[::-1]
>> '12.332.321'
>>
>> --
>> Roberto Bonvallet
> 
> I'm sorry but it give me error "no module named groupby" My python
> version is 2.51

from itertools import groupby

But don't re-invent the wheel. Use the locale module like Chris Mellon 
suggested.



-- 
Steven.


From uhum2004 at freemail.hu  Fri Oct  5 07:01:07 2007
From: uhum2004 at freemail.hu (=?ISO-8859-2?Q?Istv=E1n?=)
Date: Fri, 05 Oct 2007 13:01:07 +0200
Subject: novice list
Message-ID: <47061973.8000504@freemail.hu>

Could somebody suggest me a novice Python list, please?
Thanks, Istvan



From tjreedy at udel.edu  Thu Oct 18 15:11:58 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 18 Oct 2007 15:11:58 -0400
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
Message-ID: <ff8b5u$d2$1@ger.gmane.org>


"Steven D'Aprano" <steve at REMOVE-THIS-cybersource.com.au> wrote in message 
news:13hdochic30oo43 at corp.supernews.com...
|I don't understand how reversed() is operating. I've read the description
| in the docs:
|
| reversed(seq)
| Return a reverse iterator. seq must be an object which supports the
| sequence protocol (the __len__() method and the __getitem__() method with
| integer arguments starting at 0). New in version 2.4.

The input specification strongly suggests that rev.next() successively 
yields seq[len(seq)-1], ..., seq[0]

The main question is when len(seq) is called -- on creation as it is, or 
immediately before the first yield as you appear to expect, and as it would 
be in this generator (which does NOT match the actual implementation):

def rev(seq):
    n = len(seq)
    while n:
         n =-1
         yield seq[n]

If len(seq) were called repeatedly (after the yield, for instance), then 
termination would no longer guaranteed (see below).

I suppose the doc could be augmented with "The iterator is intialized once 
with len(sequence) when it is created, rather than when first used or 
anytime thereafter."  But I wonder whether that would confuse those not 
thinking about corner case nuances.

| and help(reversed) but neither gives any insight to what happens when you
| use reversed() on a sequence, then modify the sequence.

The sequence can potentially be modified between all calls to RL.next, and 
not just before the first as in your examples.

abcs = list('abc')
for a in reversed(abcs):
    print a
    abcs.append(a)

The 'reverse' of a changing sequence, especially one changing in length, is 
a poorly defined concept.

| >>> L = list("abc")
| >>> RL = reversed(L)
| >>> del L
| >>> list(RL)
| ['c', 'b', 'a']
|
| This suggests that reversed() makes a copy of the list:

Nope.  'del L' merely removes the association between 'L' and the list, 
leaving the internal association between RL and the list and hence the list 
itself.  So the above is consistent with storing a reference (and an index 
initialized to len-1).

| >>> L = list("abc")
| >>> RL = reversed(L)
| >>> L.append("d")
| >>> list(RL)
| ['c', 'b', 'a']
|
| This suggests that reversed() uses a reference to the original list:

It suggests that it uses a reference and an index initialized to len-1 when 
reversed is called (rather than when RL.next is first called).

| >>> RL = reversed(L)
| >>> L[0] = 'e'
| >>> list(RL)
| ['d', 'c', 'b', 'e']
|
| And these examples suggests that reversed() is confused, or at least
| confusing:

This is completely consist with iterating down via reference and index.

| >>> RL = reversed(L)
| >>> del L[2]
| >>> list(RL)
| []

In the internal loop of list, RL first tries to return L[2].  But that 
raises an exception, so RL quits

Terry Jan Reedy





From deets at nospam.web.de  Sun Oct 14 07:08:59 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 14 Oct 2007 13:08:59 +0200
Subject: Last iteration?
In-Reply-To: <fensk8$la6$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
Message-ID: <5nebmhFhp48uU1@mid.uni-berlin.de>

Peter Otten schrieb:
> Diez B. Roggisch wrote:
> 
>> Florian Lindner wrote:
> 
>>> can I determine somehow if the iteration on a list of values is the
>>> last iteration?
> 
>>  def last_iter(iterable):
>>     it = iter(iterable)
>>     buffer = [it.next()]
>>     for i in it:
>>         buffer.append(i)
>>         old, buffer = buffer[0], buffer[1:]
>>         yield False, old
>>     yield True, buffer[0]
> 
> This can be simplified a bit since you never have to remember more than on
> item:
> 
>>>> def mark_last(items):
> ...     items = iter(items)
> ...     last = items.next()
> ...     for item in items:
> ...             yield False, last
> ...             last = item
> ...     yield True, last
> ...
>>>> list(mark_last([]))
> []
>>>> list(mark_last([1]))
> [(True, 1)]
>>>> list(mark_last([1,2]))
> [(False, 1), (True, 2)]

Nice.

I tried to come up with that solution in the first place - but most 
probably due to an java-coding induced brain overload it didn't work 
out:) But I wanted a general purpose based solution to be available that 
doesn't count on len() working on an arbitrary iterable.

Diez


From steve at holdenweb.com  Wed Oct  3 10:51:42 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 10:51:42 -0400
Subject: enumerate overflow
In-Reply-To: <4703AA68.7000206@tim.thechases.com>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<fe088s$9b1$1@sea.gmane.org> <4703AA68.7000206@tim.thechases.com>
Message-ID: <4703AC7E.907@holdenweb.com>

Tim Chase wrote:
>>> for lineNum, line in enumerate(f): ...
>>>
>>> However, lineNum soon overflows and starts counting backwards. How do
>>> i force enumerate to return long integer?
>>>
>> Just how "soon" exactly do you read sys.maxint lines from a file? I 
>> should have thought that it would take a significant amount of time to 
>> read 2,147,483,647 lines ...
> 
> A modestly (but not overwhelmingly) long time:
> 
> (defining our own xrange-ish generator that can handle things larger 
> than longs)
> 
>  >>> def xxrange(x):
> ...     i = 0
> ...     while i < x:
> ...             yield i
> ...             i += 1
> ...
>  >>> for i,j in enumerate(xxrange(2**33)): assert i==j
> ...
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> AssertionError
> 
> 
> It took me about an 60-90 minutes to hit the assertion on a dual-core 
> 2.8ghz machine under otherwise-light-load.  If batch-processing lengthy 
> log files or other large data such as genetic data, it's entirely 
> possible to hit this limit as the OP discovered.
> 
I wouldn't dream of suggesting it's impossible. I just regard "soon" as 
less than an hour in commuter's terms, I suppose.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline


From steve at REMOVE-THIS-cybersource.com.au  Thu Oct  4 05:28:01 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 04 Oct 2007 09:28:01 -0000
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz>
Message-ID: <13g9ch1fi5c7se5@corp.supernews.com>

On Thu, 04 Oct 2007 11:11:03 +1300, Lawrence D'Oliveiro wrote:

> In Python, all names _are_ variables. They are not "bound" to objects.

The general convention among Python programmers is to describe names 
being bound to values. While the analogy to real life binding of objects, 
it's close enough to be useful.


> The value of os.path is a pointer. It's implemented as a pointer, it has
> all the semantics of a pointer.

Ah, I see you are a devotee of Humpty Dumpty:

    "When I use a word," Humpty Dumpty said, in rather 
    a scornful tone, "it means just what I choose it to 
    mean-neither more nor less." 

    "The question is," said Alice, "whether you can 
    make words mean so many different things." 

    "The question is," said Humpty Dumpty, "which is to 
    be master -- that's all."


The rest of the world understands pointers to be in the sense of pointers 
in C, Pascal and similar: a low level construct that is to all extents 
and purposes a memory location whose content is itself a memory location.

Oh sure, I suppose there are a few pedants who insist that "pointer" just 
means "something which points to something else". There may even be a 
language or two whose users regularly use the term "pointer" to mean 
something other than the common usage, and may never have been exposed to 
the common usage.

And thus, satisfied in their own mind that *technically* they're right, 
or at least not provably wrong, the pedants insist on calling Python 
names "pointers" regardless of the confusion it confuses to the majority 
of programmers and despite the violence they have to do to the human 
language for it to work.

Of course, we can *easily* find out what the type of os.path is. Python 
allows us to interrogate any object and find out its type:

>>> import os
>>> type(os.path)
<type 'module'>

It's a module, not a pointer. End of story.


> Honestly, why do people react to the word "pointer" as though computers
> have to wear underwear to conceal something shameful going on in their
> nether regions?

The real question is why people insist on hammering the square peg of C 
terminology into the round holes of Python's object model.



-- 
Steven.


From python.list at tim.thechases.com  Mon Oct 29 11:58:23 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 29 Oct 2007 10:58:23 -0500
Subject: two file into a single file
In-Reply-To: <aa405c1f0710290832n51ee019v67fa72eea158c45c@mail.gmail.com>
References: <aa405c1f0710290832n51ee019v67fa72eea158c45c@mail.gmail.com>
Message-ID: <4726031F.1000204@tim.thechases.com>

>                I have a two file,
>  file 1:
> 100007097
> 100007186
> 10000723
> 100007895
> 100007906
> 100008295
> 100008311
> 10000880
> 100009160
> 100009629
> 
> file 2:
> 100007097
> 100007186
> 10000723
> 100007895
> 100007906
> 100008295
> 100008311
> 10000880
> 100009160
> 100009629
> how do i make into a single file......like this
> file 1             file 2
> 100007097  100007097
> 100007186  100007097
> 100007186   10000880
> 10000723    100007895
> 100007895  100007895
> 100007906  100007895
> 100008295  00008311
> 100008311  1000088

You can use the tool designed for the job:

   bash$ paste file1.txt file2.txt

Or, if you want to use Python you might be interested in

   for a,b in zip(file('file1.txt'), file('file2.txt')):
     print '%s\t%s' % (a.strip(), b.strip())

If they're big, import itertools.izip() and use it instead of zip()

Variants may be needed depending on the behavior if file1 and 
file2 have different numbers of lines in them.

-tkc





From harlinseritt at yahoo.com  Wed Oct 17 16:59:43 2007
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 17 Oct 2007 13:59:43 -0700
Subject: Pull Last 3 Months
Message-ID: <1192638812.176235.232060@z24g2000prh.googlegroups.com>

Is there a module that can pull str values for say the last 3 months?
Something like:


print lastMonths(3)

['Sep', 'Aug', 'Jul']

Thanks



From pydecker at gmail.com  Fri Oct 12 09:45:19 2007
From: pydecker at gmail.com (Peter Decker)
Date: Fri, 12 Oct 2007 09:45:19 -0400
Subject: Cross-platform GUI development
In-Reply-To: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
Message-ID: <ca55a9900710120645l7375ad6ek6f3ee94ee425f2ac@mail.gmail.com>

On 10/12/07, psaffrey at googlemail.com <psaffrey at googlemail.com> wrote:

> My question is if Tix is old hat, what is the GUI toolkit I *should*
> be using for quick-n-dirty cross platform GUI development?

I would heartily recommend Dabo (http://dabodev.com). It wraps the
wxPython toolkit, but eliminates 99% of the hassle in dealing with the
C++ feel of wxPython. And while it is supposed to be for
database-related apps, it works great for UI-only apps, which is what
I use it for.

-- 

# p.d.


From besturk at gmail.com  Mon Oct  1 13:24:39 2007
From: besturk at gmail.com (Abandoned)
Date: Mon, 01 Oct 2007 10:24:39 -0700
Subject: Combine two dictionary...
Message-ID: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>

Hi..
dict1={1: 4,  3: 5}... and 2 millions element
dict2={3: 3,  8: 6}... and 3 millions element

I want to combine dict1 and dict2 and i don't want to use FOR because
i need to performance.

I'm sorry my bed english.
King regards..



From gagsl-py2 at yahoo.com.ar  Wed Oct 31 00:57:41 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 31 Oct 2007 01:57:41 -0300
Subject: object inheritance
References: <1193396171.753884.139930@e9g2000prf.googlegroups.com>
	<mailman.473.1193401915.13605.python-list@python.org>
	<1193403117.710320.44140@e9g2000prf.googlegroups.com>
	<Xns99D59713BE0FAduncanbooth@127.0.0.1>
	<1193801794.225829.82490@i13g2000prf.googlegroups.com>
Message-ID: <op.t01pefi7x6zn5v@gabriel2.softlabbsas.com.ar>

En Wed, 31 Oct 2007 00:36:34 -0300, Anand <anandology at gmail.com> escribi?:

>> No, that is an argument for multiple-inheritance, mixin classes etc. You
>> know when constructing the object what behaviour you want it to have. It
>> isn't an argument for changing the behaviour of an existing object
>> dynamically.

> Partially true. I don't want to change the behavior of an exiting
> object. I know what behavior I want to have at the time of creating.
> This can be achieved by creating classes dynamically by parameterizing
> the base class, which I thought is ugly.

If you know at compile time which features you want, you can use multiple  
inheritance to define the new class.
If you only know the set of clases to mix at run time, you can dinamically  
create new classes with 'type':

newclass = type('newclass', (CachedDB, SimpleDB), {})
db = newclass()
db.withIDs will call CachedDB.withID, as you want.

[In another message]
> In the example that I gave previously, call to self.say in A.foo
> calls B.say not A.say, which I think is not possible with delegation.

It's easy to create a new type inheriting from your classes:

obj = type('', (B,A), {})()
obj.foo()
should print: b.say "foo"

-- 
Gabriel Genellina



From heikki at osafoundation.org  Fri Oct  5 19:16:09 2007
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Fri, 05 Oct 2007 16:16:09 -0700
Subject: TwistedMatrix missing OpenSSL?
In-Reply-To: <mailman.1595.1191607211.2658.python-list@python.org>
References: <eb79828c0710041256g254a7b23m4cf3eed0f2b6b6b1@mail.gmail.com>	<eb79828c0710051016m5f1ec3eck22a27a69f15b068c@mail.gmail.com>
	<mailman.1595.1191607211.2658.python-list@python.org>
Message-ID: <-_CdnS9ii5wkWJvanZ2dnUVZ_jOdnZ2d@comcast.com>

Mike C. Fletcher wrote:
> Lamonte Harris wrote:
>> Where can I get it?  Anyone got any idea?
> http://www.voidspace.org.uk/python/modules.shtml#pycrypto

Last I checked Twisted actually required pyOpenSSL (maybe
pyOpenSSL-extended would also work but I haven't checked).

http://pyopenssl.sourceforge.net/
http://www.keyphrene.com/products/pyOpenSSL-extended/index.php?lng=en

-- 
  Heikki Toivonen


From tommy.nordgren at comhem.se  Wed Oct 31 21:27:31 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Thu, 1 Nov 2007 02:27:31 +0100
Subject: XML DOM, but in chunks
In-Reply-To: <1E168F83-9E9C-4C45-AE5D-8A78D85E7DCF@comhem.se>
References: <1193862283.829628.122480@k79g2000hse.googlegroups.com>
	<1E168F83-9E9C-4C45-AE5D-8A78D85E7DCF@comhem.se>
Message-ID: <8C623F30-5458-45C8-8BA6-8DAAC7B5A668@comhem.se>


On 31 okt 2007, at 22.36, Tommy Nordgren wrote:

>
> On 31 okt 2007, at 21.24, Sean Davis wrote:
>
>> I have some very large XML files that are basically recordsets.  I
>> would like to access each record, one-at-a-time, and I particularly
>> like the ElementTree library for accessing the data.  Is there a way
>> to have ElementTree read only one record of the data at a time?
>> Alternatively, are there other ways that would allow one to parse out
>> a record at a time and maintain some nice ways of accessing the
>> elements within the record?
>>
>> Thanks,
>> Sean
>>
>> --   
>> http://mail.python.org/mailman/listinfo/python-list
> 	You need a Python (or other language) implementation of the SAX API
> 	
	The module you need is xml.sax
----------------------------------
Skinheads are so tired of immigration, that they are going to move to  
a country that don't accept immigrants!
Tommy Nordgren
tommy.nordgren at comhem.se





From erik at myemma.com  Sun Oct 14 16:37:18 2007
From: erik at myemma.com (Erik Jones)
Date: Sun, 14 Oct 2007 15:37:18 -0500
Subject: Python on imac
In-Reply-To: <1192325021.164284.202230@t8g2000prg.googlegroups.com>
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<1192325021.164284.202230@t8g2000prg.googlegroups.com>
Message-ID: <62C83165-73FE-4A22-868A-7F7C627AD845@myemma.com>


On Oct 13, 2007, at 8:23 PM, Adam Atlas wrote:

> On Oct 13, 7:21 pm, John Velman <vel... at cox.net> wrote:
>> I'm considering moving from Linux to imac.   I've recently  
>> returned to
>> Python (was never very expert) to develop a small gui  
>> application.  At
>> present I plan to use PyGTK with Pango and Cairo.
>>
>> What surprises may I be in for :-)
>>
>> (Currently using slackware 11.0 on an old (8 years) slow (400mhz)  
>> machine.)
>>
>> Thanks,
>>
>> John Velman
>
> Well... I think OS X currently comes with Python 2.3 or 2.4. I
> recommend getting Fink (fink.sourceforge.net), which is basically a
> DPKG/APT repository for OS X plus an added system for automatically
> building packages from source. It'll keep the system up to date with
> the latest 2.5 release (and future versions).
>
> If you're using PyGTK, you will need to install Apple X11 (can't
> remember if it's installed by default yet), since OS X's window
> manager is not X11-based. Fink can also install GTK+, etc. for you.
> Other than that, most things should work as on Linux, more or less.

He doesn't need Fink for up to date Python version as os x binaries  
are available from the www.python.org.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From paul.hankin at gmail.com  Thu Oct  4 18:11:48 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 04 Oct 2007 22:11:48 -0000
Subject: Is there a nicer way to do this?
In-Reply-To: <mailman.1540.1191534836.2658.python-list@python.org>
References: <87ejgawpug.fsf@keizer.soze.com>
	<mailman.1540.1191534836.2658.python-list@python.org>
Message-ID: <1191535908.219535.14890@57g2000hsv.googlegroups.com>

On Oct 4, 10:53 pm, "Terry Reedy" <tjre... at udel.edu> wrote:
> However,  mapping indexes to names should be more useful:
>
> >>> aNames = dict(enumerate(['foo', 'bar']))
> >>> aNames
>
> {0: 'foo', 1: 'bar'}

If you are right that a map from indices to name is best, there's no
need for a dict: the original list already provides such a mapping.

--
Paul Hankin



From rmnet at mailc.net  Tue Oct 23 12:09:05 2007
From: rmnet at mailc.net (Rene Maurer)
Date: Tue, 23 Oct 2007 18:09:05 +0200
Subject: pure python data compression (zip)
References: <87wsteknf7.fsf@querer.allevents.ch>
	<mailman.370.1193145256.13605.python-list@python.org>
Message-ID: <87r6jllsny.fsf@querer.allevents.ch>

Guilherme Polo writes (23.10.2007):

> 2007/10/23, Rene Maurer <rmnet at mailc.net>:
>> I wonder if there are any pure python implementations available/known
>> for the zip (or any other) data compression... As far as I know
>> python's zlib uses http://www.zlib.net/, which is written in
>> C. Unfortunately this is not solution for me, because my target "only"
>> has a python interpreter....
>
> I have implemented Huffman in Python, it is not very fast yet. Further
> improvements would requires writing some parts in C and use as a
> module in Python, or maybe I just didn't think enough on how to
> improve the python code.
>
> If you don't know how huffman works, you may read this:
> http://gpolo.ath.cx:81/implements/huffman
> I have described the improvements I have done to this "teaching
> version" here: http://gpolo.ath.cx:81/texts/opc

Thank you very much. I will have a look this and try it out.
Regards,
Ren?


From gagsl-py2 at yahoo.com.ar  Mon Oct 22 11:08:10 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 22 Oct 2007 12:08:10 -0300
Subject: using "request" variable in python web program
References: <1192918912.870199.297540@v29g2000prd.googlegroups.com>
	<1192924876.257468.27810@v29g2000prd.googlegroups.com>
	<1192996769.692284.163300@v23g2000prn.googlegroups.com>
	<1192997247.369705.326060@q5g2000prf.googlegroups.com>
	<1193042095.275835.245920@i13g2000prf.googlegroups.com>
Message-ID: <op.t0ltnwxjx6zn5v@a98gizw.cpe.telecentro.net.ar>

En Mon, 22 Oct 2007 05:34:55 -0300, sami <sami.jan at gmail.com> escribi?:

> Thanks again Paul - now I can see that the "request" object is a
> string of name/value pairs that occurs after a "?" in a url e.g.
> url.com/index.cgi?name=sami&lang=python - is that correct? Googling
> for this information is useless since the word "request" is so common
> on the www

Not exactly - this is the "query string" part of the URI.
Request and Response are the two messages defined by the HTTP protocol.  
When you type a URL or click on a link or press a button in a page, your  
browser builds the appropiate Request message and sends it to the server.  
After processing, the server emits the Response message, and the browser  
displays it or otherwise processes the response.
The request and response objects that most web frameworks expose are  
abstractions of these two HTTP messages.
The bloody details are specified in RFC 2616 HTTP/1.1  
<http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html>, but you can find  
plenty of less technical descriptions. At least a basic understanding of  
how the HTTP protocol works is required to build a web application.

-- 
Gabriel Genellina



From kwa at kuwata-lab.com  Tue Oct 23 21:06:30 2007
From: kwa at kuwata-lab.com (makoto kuwata)
Date: Wed, 24 Oct 2007 01:06:30 -0000
Subject: ANN: Tenjin 0.6.1 - a fast and full-featured template engine
Message-ID: <1193187990.065750.112580@e34g2000pro.googlegroups.com>

Hi all,

I have released Tenjin 0.6.1.
http://www.kuwata-lab.com/tenjin/
In this release, benchmark script is enhanced to support
Genshi, Mako, and Templetor.

Tenjin is a very fast and full-featured temlate engine.
You can embed Python statements and expressions into your text file.
Tenjin converts it into Python program and evaluate it.

How fast Tenjin is? It is about:
* three times faster than Cheetah and Myghty
* nine times faster than Django
* sixty times faster than Kid
* twice faster than Mako
You can see the detail of benchmark at:
http://www.kuwata-lab.com/tenjin/
(benchmark script is included in Tenjin distribution.)

Tenjin is not only so fast and lightweight but also full-featured.
It supports:
* layout template
* partial template
* capturing
* preprocessing
* and so on...

See user's guide and examples at the above page for details.
New release of Tenjin will be informed at:
http://www.kuwata-lab.com/support/


Release 0.6.1:

[Enhancements]

  * Benchmark script ('benchmark/bench.py') is rewrited.
  * Benchmark supports Genshi, Mako, and Templetor.
  * Add examples.

[Bugfix]

  * Typo in User's Guide is fixed.


--
makoto kuwata



From tjreedy at udel.edu  Mon Oct 15 19:03:55 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 15 Oct 2007 19:03:55 -0400
Subject: Fwd: NUCULAR fielded text searchable indexing
References: <mailman.59.1192065699.927.python-list@python.org><7xtzoynm64.fsf@ruckus.brouhaha.com><1192108745.766895.156050@19g2000hsx.googlegroups.com><7xlka9629c.fsf@ruckus.brouhaha.com><1192123786.851903.102830@v3g2000hsg.googlegroups.com><7xsl4grhv0.fsf@ruckus.brouhaha.com>
	<1192462136.809155.112650@e34g2000pro.googlegroups.com>
Message-ID: <ff0rkp$2ev$1@ger.gmane.org>

| >
| > 
http://www.tomshardware.com/2006/09/20/conventional_hard_drive_obsole...

Unclipped link is

http://www.tomshardware.com/2006/09/20/conventional_hard_drive_obsoletism/ 





From deets at nospam.web.de  Mon Oct 15 10:29:58 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 15 Oct 2007 16:29:58 +0200
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<mailman.159.1192260728.927.python-list@python.org>
	<as0Qi.8294$UN.1208@newsfe24.lga>
	<mailman.165.1192269333.927.python-list@python.org>
	<5ncb0gFhliojU2@mid.uni-berlin.de>
	<mailman.5.1192417321.13605.python-list@python.org>
Message-ID: <5nhbr6Fie1ueU1@mid.uni-berlin.de>

David Tremouilles wrote:

> "crappy",  "waaay better"
> I will not feed the troll...
> Pygtk on mac just do the work for me on a more than satisfying way.

I should have worded more carefully, it wasn't intended as trolling. Sorry
for that.

But the point I wanted to make still stands - the native look of OSX is very
distinctive. So if it's anyhow possible, I'd recommend using PyObjc +
native Cocoa.

Yet as the OP asked for Cross-platform, the Qt-gui is pretty close,
especially with Qt4. 

And I'm sorry to say so, but GTK within X11 looks very alien to the regular
OSX user.

I personally don't mind that (using inkscape & gimp) - but I wouldn't impose
that on my users. And not only for the looks, but also for the lack of
integration with the OSX windowmanager.

Diez


From ianb at colorstudy.com  Sat Oct 13 20:52:18 2007
From: ianb at colorstudy.com (Ian Bicking)
Date: Sat, 13 Oct 2007 17:52:18 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <470789c2$0$28579$426a74cc@news.free.fr>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
Message-ID: <1192323138.960870.251160@i13g2000prf.googlegroups.com>

On Oct 6, 8:13 am, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> Well... Last year, I had a look at Pylons, then played a bit with wsgi
> and building my own framework over it. I finally dropped that code and
> went back to Pylons, which I felt could become far better than my own
> efforts. Now since then I had way too much to do at work (using other
> technos) and didn't find the time to work on my own projects, so I still
> don't know how well Pylons will pass the "real world" test, but it seems
> to me that it's rapidly progressing and mostly in the right direction. I
> still wait for an opportunity to check this out !-)

This would be my general suggestion too.  It's fine to write your own,
and not that hard, but you'll be missing out on the momentum and help
from the community.  You'll be maintaining your own code instead of
having other people work on maintenance -- which actually isn't that
much more work, except that you'll be doing it alone and without that
collective experience at hand.

That said, going without a framework (which at least in his article is
what Michele seems to be comparing Pylons against) isn't always so
bad.  I started writing an Atompub server in Pylons, but felt like I
was spending too much time navigating around what the framework setup
and not enough time just paying attention to what Atompub really is.
So I ended up writing it (as FlatAtomPub), effectively without a
framework (though developing it at the same time as WebOb, so I leaned
on that quite a bit).  The development went quite well, and for a web
service like Atompub that's probably what I'd recommend (at least to
experienced developers -- you might find yourself left to drift
otherwise without a clear idea of where to start).

But for writing a traditional web application, I'd still use Pylons.
The choices Pylons have made are with that in mind, and it doesn't at
all exclude other forms of development in the process.  You could
actually drop a FlatAtomPub instance right into a Pylons app, for
instance.  Pylons is a small enough framework that it really is quite
reasonable to pick and choose and use a very minimal style with it.

  Ian



From steve at REMOVE-THIS-cybersource.com.au  Fri Oct 19 11:17:11 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 19 Oct 2007 15:17:11 -0000
Subject: dynamic invoke
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<1192793679.102637.274620@e9g2000prf.googlegroups.com>
	<5nrkasFk00g7U1@mid.uni-berlin.de>
	<mailman.213.1192804759.13605.python-list@python.org>
Message-ID: <13hhijnm6iqph24@corp.supernews.com>

On Fri, 19 Oct 2007 10:29:12 -0400, Sushant wrote:

> Python will not allow string to be used a function pointer. It is type
> unsafe. Best way is to convert string into function pointers manually.
> 
> if dynamicMethod == 'bar':
>     method = oFoo->bar
> else:
>     method = oFoo->default
> method()


I don't know what language you're programming in there, but it isn't 
Python.

    method = oFoo->bar
                  ^
SyntaxError: invalid syntax



-- 
Steven.


From mensanator at aol.com  Tue Oct  2 00:41:48 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 01 Oct 2007 21:41:48 -0700
Subject: module confusion
In-Reply-To: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
Message-ID: <1191300108.593779.318300@y42g2000hsy.googlegroups.com>

On Oct 1, 10:03?pm, rjcarr <rjc... at gmail.com> wrote:
> Sorry if this is a completely newbie question ...
>
> I was trying to get information about the logging.handlers module, so
> I imported logging, and tried dir(logging.handlers), but got:
>
> AttributeError: 'module' object has no attribute 'handlers'

What do suppose that message means?

>
> The only experience I have in modules is os and os.path ... if I do
> the same thing, simply import os and then type dir(os.path), it
> displays the contents as expected.
>
> So my question is ... why are they different?  

Because you misspelled it. First, do a dir() on logging:

>>> import logging
>>> dir(logging)
['BASIC_FORMAT', 'BufferingFormatter', 'CRITICAL', 'DEBUG', 'ERROR',
'FATAL', 'FileHandler', 'Filter', 'Filterer', 'Formatter', 'Handler',
'INFO', 'LogRecord', 'Logger', 'Manager', 'NOTSET', 'PlaceHolder',
'RootLogger', 'StreamHandler', 'WARN', 'WARNING', '__author__',
'__builtins__', '__date__', '__doc__', '__file__', '__name__',
'__path__', '__status__', '__version__', '_acquireLock',
'_defaultFormatter', '_handlerList', '_handlers', '_levelNames',
'_lock', '_loggerClass', '_releaseLock', '_srcfile', '_startTime',
'addLevelName', 'atexit', 'basicConfig', 'cStringIO', 'codecs',
'critical', 'currentframe', 'debug', 'disable', 'error', 'exception',
'fatal', 'getLevelName', 'getLogger', 'getLoggerClass', 'info', 'log',
'logProcesses', 'logThreads', 'makeLogRecord', 'os',
'raiseExceptions', 'root', 'setLoggerClass', 'shutdown', 'string',
'sys', 'thread', 'threading', 'time', 'traceback', 'types', 'warn',
'warning']

You can now pick any item from this list to further expand
with dir(), but notice "handlers" isn't one of them.

> I mean, in terms of
> designing these modules, how would you go about getting a sub-module
> in your name space?  And on the other side, how would you go about
> getting it out?
>
> Thanks!




From duncan.booth at invalid.invalid  Wed Oct 17 08:39:50 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 17 Oct 2007 12:39:50 GMT
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de>
	<13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de>
	<13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
	<5nmcuhFiva37U2@mid.uni-berlin.de>
Message-ID: <Xns99CC8AF5E7617duncanbooth@127.0.0.1>

Marc 'BlackJack' Rintsch <bj_666 at gmx.net> wrote:

> Simply not to introduce special cases I guess.  If you write ``x.a +=
> b`` then `x.a` will be rebound whether an `a.__iadd__()` exists or
> not. Otherwise one would get interesting subtle differences with
> properties for example.  If `x.a` is a property that checks if the
> value satisfies some constraints ``x.a += b`` would trigger the set
> method only if there is no `__iadd__()` involved if there's no
> rebinding. 

Unfortunately that doesn't work very well. If the validation rejects the 
new value the original is still modified:

>>> class C(object):
	def setx(self, value):
		if len(value)>2:
			raise ValueError
		self._x = value
	def getx(self):
		return self._x
	x = property(getx, setx)

	
>>> o = C()
>>> o.x = []
>>> o.x += ['a']
>>> o.x += ['b']
>>> o.x += ['c']

Traceback (most recent call last):
  File "<pyshell#27>", line 1, in <module>
    o.x += ['c']
  File "<pyshell#22>", line 4, in setx
    raise ValueError
ValueError
>>> o.x
['a', 'b', 'c']
>>> 


From bearophileHUGS at lycos.com  Wed Oct 31 19:32:48 2007
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: Wed, 31 Oct 2007 16:32:48 -0700
Subject: 3 number and dot..
In-Reply-To: <87tzo7hs62.fsf@mulj.homelinux.net>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<87tzo7hs62.fsf@mulj.homelinux.net>
Message-ID: <1193873568.958367.106850@22g2000hsm.googlegroups.com>

Hrvoje Niksic:
> I'm surprised that no one has proposed a regex solution, such as:

I presume many Python programmers aren't much used in using REs.


> >>> import re
> >>> re.sub(r'\d{1,3}(?=(?:\d{3})+$)', r'\g<0>.', str(1234567))
> '1.234.567'

It works with negative numbers too. It's a very nice solution of a
simple problem that shows what you can do with REs. But I think that
RE has to be expanded & splitted (and maybe even commented) with a
VERBOSE, to improve readability, maybe somethign like:

\d {1,3}
(?=                # lockahead assertion
  (?: \d {3} )+ $  # non-group
)

Bye,
bearophile



From __peter__ at web.de  Mon Oct 15 08:16:10 2007
From: __peter__ at web.de (Peter Otten)
Date: Mon, 15 Oct 2007 14:16:10 +0200
Subject: Simple Text Processing Help
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
Message-ID: <fevlma$imh$01$2@news.t-online.com>

patrick.waldo wrote:

> my sample input file looks like this( not organized,as you see it):
> 200-720-7        69-93-2
> kyselina mocov?      C5H4N4O3
> 
> 200-001-8       50-00-0
> formaldehyd      CH2O
> 
> 200-002-3
> 50-01-1
> guanid?nium-chlorid      CH5N3.ClH

Assuming that the records are always separated by blank lines and only the
third field in a record may contain spaces the following might work:

import codecs
from itertools import groupby

path = "c:\\text_samples\\chem_1_utf8.txt"
path2 = "c:\\text_samples\\chem_2.txt"

def fields(s):
    parts = s.split()
    return parts[0], parts[1], " ".join(parts[2:-1]), parts[-1]

def records(instream):
    for key, group in groupby(instream, unicode.isspace):
        if not key: 
            yield "".join(group)

if __name__ == "__main__":
    outstream = codecs.open(path2, 'w', 'utf8')
    for record in records(codecs.open(path, "r", "utf8")):
        outstream.write("|".join(fields(record)))
        outstream.write("\n")

Peter


From nytrokiss at gmail.com  Thu Oct 18 02:39:09 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Thu, 18 Oct 2007 02:39:09 -0400
Subject: Best Python Linux distribution
In-Reply-To: <1192662005.972534.136890@i13g2000prf.googlegroups.com>
References: <mailman.120.1192625659.13605.python-list@python.org>
	<1192662005.972534.136890@i13g2000prf.googlegroups.com>
Message-ID: <8a6b8e350710172339p7f04ba10i51ed5991aee1b952@mail.gmail.com>

Redhat and now Oracle's Linux installer is written in python! They are all
very good but watch for some programs that require legacy versions of
library's like wx

On 17 Oct 2007 23:10:33 -0700, Devraj <devraj at gmail.com> wrote:
>
> I would recommend a Debian based distribution like Ubuntu or Debian
> itself :)
>
> On Oct 17, 10:29 pm, Anthony Perkins <anth... at muzz.co.uk> wrote:
> > Hi everyone,
> >
> > What is the best GNU/Linux distribution (or the most preferred) for
> > developing Python applications?  Ideally I would like one with both
> > Python *and* IDLE included on the install media (neither Ubuntu nor SUSE
> > have IDLE on the CDs), so that I can use it on machines without a
> > network connection.
> >
> > Thanks,
> >
> > -Anthony
> >
> > --
> > Anthony Perkins
> > muzz.be
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
http://www.goldwatches.com/
http://www.jewelerslounge.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071018/049a4b00/attachment.html>

From valereG at hotmail.fr  Thu Oct 18 12:00:24 2007
From: valereG at hotmail.fr (=?iso-8859-1?q?S=E9bastien?= Weber)
Date: 18 Oct 2007 16:00:24 GMT
Subject: Pyinotify : which user ?
Message-ID: <47178318$0$21145$7a628cd7@news.club-internet.fr>

Hello,

I'm actually writing an application with pyinotify which watchs a 
directory.
Pyinotify lets me know the events (access, modify, suppression, etc.) on 
and in the directory, but not the users who are responsable of them.
Does someone know a library which could give me that information (who's 
using a file) ?

Thank's in advance,

SW.


From sluggoster at gmail.com  Mon Oct 22 18:50:20 2007
From: sluggoster at gmail.com (Mike Orr)
Date: Mon, 22 Oct 2007 22:50:20 -0000
Subject: Normalize a polish L
In-Reply-To: <1192553507.049705.17200@z24g2000prh.googlegroups.com>
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
	<1192485438.934146.139740@q5g2000prf.googlegroups.com>
	<1192553507.049705.17200@z24g2000prh.googlegroups.com>
Message-ID: <1193093420.688395.154860@t8g2000prg.googlegroups.com>

On Oct 16, 9:51 am, Roberto Bonvallet <rbonv... at gmail.com> wrote:
> For example, in Spanish, "?" (u with umlaut) should be represented as
> "u", but in German, it should be represented as "ue".
>
>     ping?ino -> pinguino
>     Fr?hst?ck -> Fruehstueck
>
> I'd like that web applications (e.g. blogs) took into account these
> conventions when creating URLs from the title of an article.

Well, that gets into official vs unofficial conversions.  Does the
Spanish Academy really say '?' should be converted to 'u'?  In
German,'?' -> 'ue' is an official standard used by Germans themselves.
In contrast, I've heard that Swedish unlike German prefers 'o' rather
than 'oe' for '?', and Norwegian prefers 'o' for '?', even though
they're all etymologically the same letter as the German '?'.  Russian
has some four common ways to romanize/ASCII'ify their alphabet (sylniy
or sylnyj or silnii?  schi or shchi?  byt' or bit' -- the latter
creates a false homograph with bit'.  s"yest'?)  Yes, on my US-ASCII
keyboard I simply drop the accents unless I know there's a standard
conversion (German '?' to 'ss').  But whether that should be hardcoded
into a blog URL library is different matter, and if it is there should
probably be plugin tables for different preferred standards.

--Mike



From ldo at geek-central.gen.new_zealand  Wed Oct  3 06:20:00 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 03 Oct 2007 23:20:00 +1300
Subject: python 2.5 and 3gb switch
References: <fdkan6$ne0$1@aioe.org>
Message-ID: <fdvqcg$fbq$2@lust.ihug.co.nz>

In message <fdkan6$ne0$1 at aioe.org>, neil wrote:

> The scene is very large requiring me to use a 3gb switch enabled version
> of Blender and of course boot into a 3gb XP.

Why not just use a proper 64-bit OS? Since Blender is also open-source,
there's no requirement that you be hobbled by Dimdows.


From bdesth.quelquechose at free.quelquepart.fr  Wed Oct  3 23:20:31 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 04 Oct 2007 05:20:31 +0200
Subject: unit testing
In-Reply-To: <1191593565.971012.212920@22g2000hsm.googlegroups.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1571.1191577093.2658.python-list@python.org>
	<1191593565.971012.212920@22g2000hsm.googlegroups.com>
Message-ID: <4706ae4c$0$30618$426a74cc@news.free.fr>

byte8bits at gmail.com a ?crit :
(snip)
> 
> Thanks to all for the opinions. Just to clarify, I have nothing
> against testing. I like doing it. I catch a lot of bugs! I dislike the
> formality of the unittest module. It's unyielding. It makes testing
> difficult unless your code is written with testing in mind from the
> start.

Indeed. But that's not specific to the unittest module - you'd have the 
same problem with any unit test framework.


From stef.mientki at gmail.com  Sun Oct 28 11:31:29 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Sun, 28 Oct 2007 16:31:29 +0100
Subject: how to convert tuple to a "list of single values" ?
Message-ID: <4724AB51.6050702@gmail.com>

hello,

The next piece of code bothers me:

      ptx, pty, rectWidth, rectHeight = self._point2ClientCoord (p1, p2 )
      dc.SetClippingRegion ( ptx, pty, rectWidth, rectHeight )

Because I want to write it in 1 line,
and without the use of intermediate variables (for which I have to 
invent names ;-)
like this:

    dc.SetClippingRegion ( self._point2ClientCoord (p1, p2 ) )

Now that doesn't work, because
- dc.SetClippingRegion() requires 4 integer parameters
- _point2ClientCoord()  returns a tupple of 4 integers

I can't think of a solution,
is there any ?

thanks,
Stef Mientki




From nomail at noserve  Tue Oct 16 15:05:39 2007
From: nomail at noserve (martyw)
Date: Tue, 16 Oct 2007 21:05:39 +0200
Subject: while statements
In-Reply-To: <mailman.62.1192541292.13605.python-list@python.org>
References: <mailman.62.1192541292.13605.python-list@python.org>
Message-ID: <47150b83$0$11925$9a622dc7@news.kpnplanet.nl>

Shawn Minisall wrote:
> I just learned about while statements and get why you place them around 
> inputs for validation, but I'm a little lost on exactly where to place 
> it with what condition in this program where the number of fat grams 
> exceeds the total number of calories so that it loops back and asks you 
> the two questions again instead of just saying The calories or fat grams 
> were incorrectly entered.  Any idea's?
> 
> thx
> 
> while cal <=0:
>    #Prompt for calories
>        cal = input("Please enter the number of calories in your food: ")
>        if cal <=0:
>            print "Error.  The number of calories must be positive."
> 
>    #Prompt for fat
>        fat = input("Please enter the number of fat grams in your food: ")
>        if fat <=0:
>            print "Error.  The number of fat grams must be positive."
> 
> 
>    #Calculate calories from fat
>        calfat = float(fat) * 9
>           #Calculate number of calories from fat
>        caldel = calfat / cal
> 
>    #change calcent decimal to percentage
>        calcent = caldel * 100
> 
>    #evaluate input
>    if calfat > cal:
>        print "The calories or fat grams were incorrectly entered."
> 
>    elif calcent > 0 and calfat < cal:
>           if caldel <= .3:
>            print "Your food is low in fat."
>        elif caldel >= .3:
>            print "Your food is high in fat."
> 
>        #Display percentage of calories from fat
>        print "The percentage of calories from fat in your food is %", 
> calcent
> 
you could change to something like this


while True: # don test in the loop
    #Prompt for calories
     cal = input("Please enter the number of calories in your food: ")
     if cal <=0:
         print "Error.  The number of calories must be positive."
         continue ### here you don need to go any further in this loop

    #Prompt for fat
     fat = input("Please enter the number of fat grams in your food: ")
     if fat <=0:
         print "Error.  The number of fat grams must be positive."
         continue ### here you don need to go any further in this loop


    #Calculate calories from fat
     calfat = float(fat) * 9
           #Calculate number of calories from fat
     caldel = calfat / cal

    #change calcent decimal to percentage
     calcent = caldel * 100

    #evaluate input
     if calfat > cal:
        print "The calories or fat grams were incorrectly entered."

     #elif calcent > 0 and calfat < cal:
     else: # calcent will be bigger than zero now by construction,
           # and I guess you dont want to test for equality of
           # calfat and cal
         if caldel <= .3:
            print "Your food is low in fat."
         elif caldel >= .3:
            print "Your food is high in fat."

        #Display percentage of calories from fat
         print "The percentage of calories from fat in your food "\
               "is %f%%" % calcent
         break # we got a satisfactory result, leave this loop


From seb.haase at gmail.com  Mon Oct  1 17:44:05 2007
From: seb.haase at gmail.com (seb.haase at gmail.com)
Date: Mon, 01 Oct 2007 21:44:05 -0000
Subject: where is pkg_resources (setuptools) looking for entry_points.txt
Message-ID: <1191275045.072010.215840@y42g2000hsy.googlegroups.com>

Hi,
I'm trying to use an egg packages (pyOpenGL)  as a "normal
package" (by unzipping the egg into a directory).
Generally this seems to work fine, except one init-step is missing.

>From setuptools I got the pkg_resources.py file.
But now the package is not properly initialized, because
iter_entry_points() in pkg_resources  does not find the corresponding
entry_points.txt file needed to setup some intial configuration...
(array handlers for pyOpenGL)

Is there a default directory name or an environment variably or maybe
the (ominous? ) __main__.__require  variable  that I can use to have
the entry_points text read ?

(I would even be willing to "manually"  load the entry_points.txt file
and feed it into some pkg_resources related variable to make it happy
[before I import my package] )

Thanks,
Sebastian Haase



From george.sakkis at gmail.com  Sun Oct 28 21:57:37 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Sun, 28 Oct 2007 18:57:37 -0700
Subject: simple question on dictionary usage
In-Reply-To: <5ogqvnFmgu6mU2@mid.uni-berlin.de>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<472327af$0$31482$426a74cc@news.free.fr>
	<1193487810.194444.277900@o38g2000hse.googlegroups.com>
	<5ogqvnFmgu6mU2@mid.uni-berlin.de>
Message-ID: <1193623057.349970.38740@o80g2000hse.googlegroups.com>

On Oct 27, 8:58 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Sat, 27 Oct 2007 05:23:30 -0700, bearophileHUGS wrote:
> > My take too :-)
>
> > dict(item for item in record.iteritems() if item[0][0] == 'E')
>
> ``s.startswith('E')`` is a little safer than ``s[0] == 'E'`` as the former
> returns `False` if `s` is empty while the latter raises an `IndexError`.

A string slice is safe and faster though: if s[:1] == 'E'.

George



From steve at holdenweb.com  Thu Oct  4 06:16:31 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 06:16:31 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <fe26tn$vs0$5@lust.ihug.co.nz>
References: <13frd6vtarbee75@corp.supernews.com>	<fdtsfu$iq6$03$1@news.t-online.com>	<fdvn34$odf$1@orkan.itea.ntnu.no>
	<85ve9ov971.fsf@lola.goethe.zz>	<fdvnr8$odf$2@orkan.itea.ntnu.no>	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>	<47041303$0$13930$fa0fcedb@news.zen.co.uk>	<8sn8g39v75hg114lf3m9m911ib2ajddaui@4ax.com>
	<fe26tn$vs0$5@lust.ihug.co.nz>
Message-ID: <fe2ehr$63f$4@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <8sn8g39v75hg114lf3m9m911ib2ajddaui at 4ax.com>, George Neuner
> wrote:
> 
>> The Christian Bible says "In the beginning was the Word..."
> 
> Which is an English mistranslation from the Greek "logos".

So, now you're telling me that the Garden of Eden was actually a 
*marketing campaign*?

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From besturk at gmail.com  Fri Oct  5 07:29:32 2007
From: besturk at gmail.com (Abandoned)
Date: Fri, 05 Oct 2007 04:29:32 -0700
Subject: Boolean parser..
In-Reply-To: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
Message-ID: <1191583772.041261.71790@19g2000hsx.googlegroups.com>

On 4 Ekim, 22:29, Abandoned <best... at gmail.com> wrote:
> Hi..
> I try a boolean parser in python since 1 weak.. But i can't do this
> because this is very complicated :(
> Do you know any blooean parser script in python or how do i write a
> boolean parser ?
> example query: ((google or yahoo) or (live msn)) not web
> I'm sorry my bad english.
> King Regards..

This is a example written in perl "
http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=350&lngWId=6"
but i don't find any python example



From donn.ingle at gmail.com  Tue Oct 30 01:51:39 2007
From: donn.ingle at gmail.com (Donn Ingle)
Date: Tue, 30 Oct 2007 07:51:39 +0200
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
	<47260805$0$5155$426a34cc@news.free.fr>
	<87d4uxk08l.fsf@mulj.homelinux.net>
Message-ID: <fg6ghv$ff1$1@ger.gmane.org>

> While Java's variable declarations bear a superficial (syntactical)
> similarity to C, their semantics is in fact equivalent to the
> object-reference semantics we know in Python. 

I come from Z80A/GWBASIC/VB and a little C, I would describe a Python
variable as a pointer - in that it contains the address of something. 
What that "something" is, is a little fuzzy. Right now I imagine it's to a
kind of structure which has meta info about the object as well as it's
actual address.

How far off would that be?

\d



From exarkun at divmod.com  Wed Oct 24 16:12:31 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 24 Oct 2007 16:12:31 -0400
Subject: Easiest way to get exit code from os.popen()?
In-Reply-To: <1193252864.957914.305300@t8g2000prg.googlegroups.com>
Message-ID: <20071024201231.8162.243731168.divmod.quotient.27330@ohm>

On Wed, 24 Oct 2007 19:07:44 -0000, mrstephengross <mrstephengross at hotmail.com> wrote:
>Hi folks. I'm using os.popen() to run a command; according to the
>documentation, the filehandle.close() oepration is suppsoed to return
>the exit code. However, when I execute something like "exit 5",
>close() returns 1280. Here's the code:
>
>  pipe = os.popen("exit 5")
>  print pipe.close() # prints 1280
>
>Am I doing something wrong? Is there an easier way to get the exit
>code?

  >>> import os
  >>> os.WEXITSTATUS(1280)
  5
  >>>

Jean-Paul


From oruccim at gmail.com  Mon Oct  8 09:11:44 2007
From: oruccim at gmail.com (oruccim at gmail.com)
Date: Mon, 08 Oct 2007 06:11:44 -0700
Subject: python graphics
Message-ID: <1191849104.472341.241280@57g2000hsv.googlegroups.com>

hello all
i researching a graphics table with python.haeve you got this how it
have got design and fast making
thanks for your help



From joshua at eeinternet.com  Fri Oct 19 13:15:16 2007
From: joshua at eeinternet.com (Joshua J. Kugler)
Date: Fri, 19 Oct 2007 09:15:16 -0800
Subject: Millisecond timestamp function?
References: <53396d9e0710190644t345d5935q9aa2e10498565965@mail.gmail.com>
Message-ID: <ffaon5$42f$1@ger.gmane.org>

On Friday 19 October 2007 05:44, Dmitri O.Kondratiev wrote:

> What Python module / function can be used to get millisecond timestamps?
> time.time() returns the time as a floating point number expressed in
> seconds since the epoch, in UTC.
> 
> Thanks!

See the module datetime.

The datetime object can return down the to microsecond.

>>> import datetime
>>> datetime.datetime.now()
datetime.datetime(2007, 10, 19, 9, 13, 53, 289075)

j

-- 
Joshua Kugler
Lead System Admin -- Senior Programmer
http://www.eeinternet.com
PGP Key: http://pgp.mit.edu/ ?ID 0xDB26D7CE



From theller at ctypes.org  Tue Oct 16 14:05:10 2007
From: theller at ctypes.org (Thomas Heller)
Date: Tue, 16 Oct 2007 20:05:10 +0200
Subject: Getting error message/trace over the C API
In-Reply-To: <pan.2007.10.16.17.06.22.42783@hotmail.com>
References: <pan.2007.10.16.17.06.22.42783@hotmail.com>
Message-ID: <ff2ugm$6dr$1@ger.gmane.org>

Sami Vaisanen schrieb:
> Hello group,
>  
> I'm writing a C++ based application that embeds the python engine. Now I
> have a problem regarding exception/error information. Is there a way to
> get the exception message and possibly the traceback into a string for
> example? I've been eyeballing the PyErr_ module and it seems fairly
> limited. In other words PyErr_Print() calls the right functions for
> getting the exception information but unfortunately it is hardwired to
> print this data directly into sys.stderr, and for an embedded application
> this is completely inappropriate. 
>  
> I have seen solutions that propose writing a custom Python class with
> write method and using that to grab the output from sys.stderr and then
> saving the data for example into a variable for later access, but unless
> Im mistaken this solution (not only that it is extremely ugly) is not
> thread safe. Even if a thread in my application is holding GIL, the lock
> can be released by extensions/the interpreter and thus opens up a race
> condition regarding that grabber object. 

You should call 'import traceback; traceback.format_exc()' from your C code;
it returns a string (a 'PyObject *' that contains a string).

Thomas



From eduardo.padoan at gmail.com  Thu Oct 11 08:53:57 2007
From: eduardo.padoan at gmail.com (Eduardo O. Padoan)
Date: Thu, 11 Oct 2007 09:53:57 -0300
Subject: Duck Typing and **kwds
In-Reply-To: <1192075510.470da0f6a7958@comuh.uh.cu>
References: <1192075510.470da0f6a7958@comuh.uh.cu>
Message-ID: <dea92f560710110553sfdb721di2dfdf28fb24e9422@mail.gmail.com>

On 10/11/07, Luis Zarrabeitia <kyrie at uh.cu> wrote:
>
> Hi there.
>
> I just tried this test:
>
> ====
> def f(**kwds):
>     print kwds
>
> import UserDict
> d = UserDict.UserDict(hello="world")
> f(**d)
> ====
>
> And it fails with a TypeError exception ("f() argument after ** must be a
> dictionary"). I find that weird, as UserDict should support all protocols that
> dict supports, yet it doesn't seem to support ** unpacking. If instead of
> UserDict I use a derivate class from dict (class mydict(dict):pass), the **
> operator works as expected. It also works if I execute f(**dict(d)) instead.
>
> Is that behavior expected? Is there any reason (performance, perhaps?) to break
> duck-typing in this situation?

Reported, accepted and closed 5 months ago:
http://bugs.python.org/issue1686487

-- 
http://www.advogato.org/person/eopadoan/
Bookmarks: http://del.icio.us/edcrypt


From arkanes at gmail.com  Wed Oct 31 19:58:05 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 31 Oct 2007 18:58:05 -0500
Subject: A Python 3000 Question
In-Reply-To: <1193871778.135260.54950@o80g2000hse.googlegroups.com>
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
	<slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
	<1193761000.248965.139690@y42g2000hsy.googlegroups.com>
	<slrnfigs6g.1mk.horpner@FIAD06.norwich.edu>
	<1193836481.203103.111400@22g2000hsm.googlegroups.com>
	<13ihvgqk7klhb9@corp.supernews.com>
	<1193871778.135260.54950@o80g2000hse.googlegroups.com>
Message-ID: <4866bea60710311658i6a8c8559k582092a911afed63@mail.gmail.com>

On Oct 31, 2007 6:02 PM, George Sakkis <george.sakkis at gmail.com> wrote:
> On Oct 31, 6:13 pm, Steven D'Aprano
>
> > What you have measured is a local optimization that is only useful when
> > you have a tight loop with lots of calls to the same len():
> >
> > Len = sequence.__len__
> > while Len() < 100000:
> >     foo(sequence)
>
> Exactly what timeit() does, a tight loop.
>
> > But what Neil is measuring is relevant for the more general case of
> > calling len() on arbitrary objects at arbitrary times:
> >
> > x = len(sequence)
> > y = 42 + len("xyz")
> > if len(records) == 12:
> >     print "twelve!"
> >
> > To get the benefit of the micro-optimization you suggested, you would
> > need to write this:
> >
> > Len = sequence.__len__
> > x = Len()
> > Len = "xyz".__len__
> > y = 42 + Len()
> > Len = records.__len__
> > if Len() == 12:
> >     print "twelve!"
> >
> > Not only is that an especially ugly, confusing piece of code, it is also
> > counter-productive as you still have to do the method lookup every single
> > time.
>
> The whole point of the optimization is avoiding 99999 attribute
> lookups of the timeit loop. For a single call both times are
> practically zero so the snippet above is just silly.
>
> > Taking the method lookup is an apple-and-oranges comparison. It is useful
> > to know for the times when you don't want an apple, you want an orange
> > (i.e. the tight loop example above).
> >
> > This is an apples-and-apples comparison:
> >
> > >>> import timeit
> > >>> timeit.Timer("Len = seq.__len__; Len()", "seq = range(12)").repeat()
> >
> > [1.3109469413757324, 0.7687380313873291, 0.55280089378356934]>>> timeit.Timer("len(seq)", "seq = range(12)").repeat()
> >

For the record, the apples to apples way is to STORE_FAST len, because
what this does is compare the speed of LOAD_GLOBAL(len) to a
LOAD_ATTR, a STORE_FAST, and a LOAD_FAST. len() is still faster on
builtins when you do it "right":

C:\>python -m timeit -s "s=range(12);l=type([]).__len__" "l(s)"
1000000 loops, best of 3: 0.258 usec per loop

C:\>python -m timeit -s "l = len;s=range(12)" "l(s)"
10000000 loops, best of 3: 0.0994 usec per loop

This is absolutely apples to apples because exactly the same bytecodes
are being timed.

However, you can make the first faster by using an already bound
method. This saves some runtime cost inside the __len__ method, and it
saves a LOAD_FAST in the call. It's still slower than len(), by the
barest fraction of a second (I ran these a few dozen time each and the
difference, while tiny, was consistent - __len__ was always just over
a tenth of a usec, len() was always just under it).

C:\>python -m timeit -s "s=range(12);l=s.__len__" "l()"
10000000 loops, best of 3: 0.114 usec per loop

> > [0.60111594200134277, 0.5977931022644043, 0.59935498237609863]
> >
> > The time to do the lookup and call the method is about 0.6 microseconds
> > whether you do it manually or let len() do it.
>
> That assumes you know the internals of len(). Perhaps it does
> something smarter for lists, or perhaps attribute lookup is faster at
> the C level. I don't know, and that's exactly the point, I don't need
> to know the internals to do the comparison of two callables.
>

Types implemented in C implement the sequence protocol as a struct of
function pointers, which len() derefs and calls directly, while
__len__ on the builtin is a Python boundmethod.

The speed difference will be reversed for types implemented in Python,
though. So now you know.

> > The logic behind the micro-optimization trick is to recognize when you
> > can avoid the cost of repeated method lookups by doing it once only. That
> > is not relevant to the question of whether len() should be a function or
> > a method.
>
> No disagreement here; I didn't bring up performance and it's not at
> all a reason I consider len() as a function to be a design mistake.
> What I dispute is Neil's assertion that "len as a builtin can be
> faster than len as an attribute" and bringing as evidence the timings
> that include attribute lookups. That statement is just wrong;
> comparing X to an attribute assumes you have the attribute in the
> first place, you don't need to look it up.
>

And I don't think it's a design mistake for all the other reasons
mentioned, not because it's 6 thousands of a millisecond faster in a
microbenchmark.


From info at wingware.com  Mon Oct  1 12:10:17 2007
From: info at wingware.com (Wingware)
Date: Mon, 01 Oct 2007 12:10:17 -0400
Subject: ANNOUNCE: Wing IDE 3.0 released
Message-ID: <47011BE9.5050001@wingware.com>

Hi,

We're happy to announce the release of Wing IDE 3.0, an advanced
development environment for the Python programming language.
It is available from:

http://wingware.com/

Wing IDE provides powerful debugging, editing, code intelligence,
testing, and search capabilities that reduce development and debugging
time, cut down on coding errors, and make it easier to understand
and navigate Python code.

New features added in Wing 3.0 include:

* Multi-threaded debugger
* Debug value tooltips in editor, debug probe, and interactive shell
* Autocompletion and call tips in debug probe and interactive shell
* Automatically updating project directories
* Testing tool, currently supporting unittest derived tests (*)
* OS Commands tool for executing and interacting with external
   commands (*)
* Rewritten indentation analysis and conversion (*)
* Introduction of Wing IDE 101, a free edition for beginning
   programmers
* Available as a .deb package for Debian and Ubuntu
* Support for Stackless Python
* Support for 64 bit Python on Windows and Linux

(*)'d items are available in Wing IDE Professional only.

The CHANGELOG.txt file in the installation provides additional details.

System requirements are Windows 2000 or later, OS X 10.3.9 or later for
PPC or Intel (requires X11 Server), or a recent Linux system (either 32
or 64 bit).

Purchasing & Upgrading
----------------------

Wing IDE Professional & Wing IDE Personal are commercial software and
require a license to run.  To upgrade a 2.x license or purchase a new
3.x license:

Upgrade        https://wingware.com/store/upgrade
Purchase       https://wingware.com/store/purchase

Any 2.x license sold after May 2nd 2006 is free to upgrade; others cost
1/2 the normal price to upgrade.

Thanks!

The Wingware Team
Wingware | Python IDE
Advancing Software Development

www.wingware.com



From jcd at sdf.lonestar.org  Mon Oct  1 10:43:04 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 1 Oct 2007 10:43:04 -0400
Subject: Select as dictionary...
In-Reply-To: <1191247924.3393.7.camel@dot.uniqsys.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<20071001135746.GA12995@sdf.lonestar.org>
	<1191247924.3393.7.camel@dot.uniqsys.com>
Message-ID: <20071001144304.GA19440@sdf.lonestar.org>

On Mon, Oct 01, 2007 at 10:12:04AM -0400, Carsten Haese wrote regarding Re: Select as dictionary...:
> 
> On Mon, 2007-10-01 at 09:57 -0400, J. Clifford Dyer wrote:
> > > 
> > Try this:
> > 
> > aia.execute("SELECT id, w from list")
> > links=aia.fetchall()
> > linkdict = dict()
> > for k,v in links:
> >     linkdict[k] = v
> > print linkdict
> 
> Improvement 1: Use the fact that dict can be initialized from a sequence
> of key/value pairs:
> 
> aia.execute("SELECT id, w from list")
> linkdict = dict(aia.fetchall())
> 

This is only an improvement if the SQL query remains a list of 2-tuples.  If the OP wants to add more values, the more verbose version allows for easier extensibility.  

for k,v1,v2 in links:
	linkdict[k] = (v1, v2)

Of course even better would be not to have to add variables, so maybe:

for link in links:
	linkdict[link[0]] = link[1:],

which changes the output format somewhat, but keeps the access by dict keyed to the DB id.

> Improvement 2: Use an iterator instead of reading all rows into memory:
> 
> aia.execute("SELECT id, w from list")
> linkdict = dict(iter(aia.fetchone,None))
> 

Agreed.  A much better solution.

Cheers,
Cliff


From nachieket at yahoo.com  Tue Oct  2 11:05:51 2007
From: nachieket at yahoo.com (Nachiket Joshi)
Date: Tue, 2 Oct 2007 08:05:51 -0700 (PDT)
Subject: Subprocesses on Windows
Message-ID: <593915.34492.qm@web53208.mail.re2.yahoo.com>

Hey Guys!

    Well before I explain my problem, let me tell you all that I am not a professional programmer and new to python too. I just write some scripts as and when required and this time it seems I am stuck somewhere in trying to create subprocesses.

    The problem is something like this. I am trying to run nmap scan on my network and for that I want to start multiple nmap instances (256 at once) togather and wait till those 256 are over before I start next lot of 256 instances. Well to test I have put in two nmap scans in my program and I have succeeded to start both of them simultaneously (in fact one after another) by using "subprocess module and Popen".  But the problem is when I run a loop to start both of these nmap instances, they do start BUT the script then exits to command prompt completing all the executions. But this is not what I want. I want to wait till both of these nmap processes are finished and then only exit from script (in fact exit from that function or loop). Then only I would be able to call next lot of IP Ranges to scan. I did try os.waitpid() but it gives following error while running the program:

###########################################
[10172, 'None']                       <<< This is the variable where I am storing process IDs
###########################################
Traceback (most recent call last):
  File "C:\python\inscan.py", line 121, in <module>
    clas_b()
  File "C:\python\inscan.py", line 92, in clas_b
    wpid, sts = os.waitpid(retval[i], 0)            <<< and passing here to os.waitpid
OSError: [Errno 10] No child processes
 

    I hope you guys understood! I am pasting my function here. Just have a look and suggest something for that. I heard fork() is not supported for windows and that's why I used 'subprocess module'. 

def clas_b():
    i = 0
    IP = ((10,50,89,0,24), (10,50,90,0,24))
    retval = ['None', 'None']
        
    for k in IP:
        b1 = k[0]; b2 = k[1]; b3 = k[2]
        b4 = k[3]; mkb = k[4]
        
        # Call the subprocess using convenience method
        #retval[i] = subprocess.call(clas_c(b1, b2, b3, b4, mkb), 0, None, None, \
        #                         outptr[i], errptr[i], shell=True)
        
         # clas_c actually runs Nmap command and stores results in an output file
         retval[i] = int(subprocess.Popen(clas_c(b1, b2, b3, b4, mkb), \
                                     shell=True).pid)
        print "###########################################"
        print retval
        print "###########################################"
        
     while 1:
            wpid, sts = os.waitpid(retval[i], 0)
            if os.WIFSTOPPED(sts):
                continue                                                       <<< I don't know anything about this
            elif os.WIFSIGNALED(sts):                            <<< I just found this somewhere and
                return -WTERMSIG(sts)                             <<< pasted to my program for to test
            elif os.WIFEXITED(sts):
                return os.WEXITSTATUS(sts)
            else:
                raise error, "Not stopped, signaled or exited???"
 
        i += 1

Thanks,
Nachiket Joshi


       
____________________________________________________________________________________
Yahoo! oneSearch: Finally, mobile search 
that gives answers, not web links. 
http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071002/b6a73875/attachment.html>

From nick.bastin at gmail.com  Tue Oct  9 02:59:41 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Tue, 9 Oct 2007 02:59:41 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191905720.039648.30620@19g2000hsx.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
	<1191891827.863258.23620@y42g2000hsy.googlegroups.com>
	<mailman.2.1191893235.916.python-list@python.org>
	<1191905720.039648.30620@19g2000hsx.googlegroups.com>
Message-ID: <66d0a6e10710082359t3906127cwadb4fa62e7e5c87b@mail.gmail.com>

On 10/9/07, mensanator at aol.com <mensanator at aol.com> wrote:
> On Oct 8, 8:27?pm, "Nicholas Bastin" <nick.bas... at gmail.com> wrote:
> > On 10/8/07, mensana... at aol.com <mensana... at aol.com> wrote:
> > > Because they publish maps?
> >
> > I'm not sure what this has to do with it.
>
> Maybe you've never had to navigate?

I don't often find the need to navigate by time zone.  Nor do
cartographers consider themselves experts on time, but rather
geography.

> WHY must we accomodate the ignorant? Why not cut them off
> from the Internet until they get their act together? Don't
> people get mad at Microsoft for breaking standards? People like
> you are to blame for accomodating broken standards. "Oh, no,
> we can't afford to lose those three potential customers who
> live on an island in Kiribati!"

There's no broken standard here.  I'd advise you to refrain from
painting other people with your own ignorant brush.

> > If I schedule a meeting with someone in Indiana, and I'm in Ohio,
> > they're in the same military time zone, but they don't observe
> > daylight savings time, so in fact our times are different.  Users
> > probably want our applications to handle these problems.
>
> Isn't that what they call a "locale"?

No.  If we spoke a different language or used a different script,
that'd be a different locale.  Of course, we might still be in the
same time zone.

> > > > Since timezones (obviously)
> > > > contain more information than just the GMT offset
> >
> > > Of course. But the GMT offset could be used to filter his list
> > > of 400 choices, couldn't it?
> >
> > Sortof.  First, your user has to understand what GMT is,
>
> And you start that education by learning the 25 timezones.
> Then when you understand that, you can then learn about locales.

Just because NATO thinks there's 25 time zones doesn't mean that
they're any more correct than all of the local entities which have
defined their own time zones.   And again, your usage of the word
'locale' bears no relationship to the actual definition, in computer
science terms.

> > so that's
> > already going to cause problems.   Secondly, you need to handle time
> > zones which drift from different GMT offsets depending on the time of
> > year.
>
> It helps to know what you're drifting from.

You're drifting from UTC.  UTC which has no bearing nor controlling
influence on time zone definitions.  Just because government entities
reference +/- UTC in time zone definitions does not mean that they're
substantially related.

> > At the very least your algorithm needs to be greedy.
>
> How good an algorithm do you think the OP will come up
> with if he doesn't understand why his list has 400 items
> or has any clue how to reduce it?

I didn't presume the OP was an idiot.  I felt that it was much more
reasonable to explain how the 400 differed then to paint for him a
fairy tale of 25 magical time zones, which had no bearing on his
application.  There are many ways to filter the 400 based on the needs
of each application, and I leave it as an exercise to the OP to either
deduce the appropriate ones, or ask more questions.

> > > Why not teach him the truth, starting from the top level? Shouldn't
> > > you teach him to fish rather than just give him one?
> >
> > Because the truth is that there are upwards of 400 different time
> > zones,
>
> Locales.

No, locale has already been defined by the computer science community,
and it doesn't involve time zones.  There are, realistically, less
than 400 locales.  Do not confuse the two.  (Locales can be consistent
across many time zones - see en_US for a trivial example).  Locales
are coded by language, script, country, and a variant, and do not
contain time zone information.

> > There is no central authority which defines global time zones.  The
> > functional definition of a time zone is merely a geographical area of
> > the earth that has adopted the same local time rules.
>
> So, you can live your life with functional definations,
> never bothering to learn any theory? Is code monkey all you
> aspire to?

Well, I certainly don't aspire to be a stuck up ass, which is
apparently what you've been working towards.

There is no magical theory behind time zones.  There is no one truth,
and there is no controlling global regulation.  Does NATO have a
simple time zone implementation?  Absolutely.  Is that relevant to
most consumer applications?  Absolutely not.

When you write applications for the military, feel free to adhere to
their standards.  When you write applications for an international
community, you might want to put the bigotry aside and cater to their
actual needs.

--
Nick


From arkanes at gmail.com  Wed Oct  3 13:39:13 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 3 Oct 2007 12:39:13 -0500
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
In-Reply-To: <13g7irlht5ruj3a@corp.supernews.com>
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
	<mailman.1399.1191337639.2658.python-list@python.org>
	<13g5uvh698l9h1c@corp.supernews.com>
	<mailman.1462.1191425446.2658.python-list@python.org>
	<13g7irlht5ruj3a@corp.supernews.com>
Message-ID: <4866bea60710031039j2101e393uf245c565b26d966c@mail.gmail.com>

On 10/3/07, Grant Edwards <grante at visi.com> wrote:
> On 2007-10-03, Chris Mellon <arkanes at gmail.com> wrote:
> > On 10/2/07, Grant Edwards <grante at visi.com> wrote:
> >> On 2007-10-02, Chris Mellon <arkanes at gmail.com> wrote:
> >>
> >> > PyGtk has poor cross platform support, a very large footprint (the
> >> > largest of all these libraries)
> >>
> >> It's larger than wxWidgets on top of Gtk?
> >
> > No, but it's larger than wx on top of the native API,
>
> A moot point for X11.

wxWidgets actually does have a raw X11 implementation, although nobody
uses it so it's not well maintained. And since X11 is hardly the only
platform that anyone cares about, evaluating a potential addition to
the standard library across *all* platforms is important.

>
> > so when you average it across all platforms it's quite a bit
> > larger.
>
> I guess that's one of the costs of portability.
>

Eh? The point is that wxWidgets, the more portable toolkit, is
*smaller* than Gtk. It's not really related to portability as much as
design considerations. Gtk is designed and intended to be used as a
system library, in conjunction with many other system libraries and
lots of system-level configuration. It was never written with the goal
of being an application-level toolkit.


From fakeaddress at nowhere.org  Sat Oct 27 06:08:48 2007
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Sat, 27 Oct 2007 03:08:48 -0700
Subject: transmit an array via socket
In-Reply-To: <mailman.500.1193474382.13605.python-list@python.org>
References: <20071026.225205.281.0@webmail13.vgs.untd.com>
	<mailman.500.1193474382.13605.python-list@python.org>
Message-ID: <V6EUi.639$%Y6.591@nlpi061.nbdc.sbc.com>

Hendrik van Rooyen wrote:
> "Jeff Pang" <p...uno.com> wrote:
>> I want to transmit an array via socket from a host to another.
>> How to do it? thank you.
> 
> pickle it and send it and unpickle it on the other side.
> 
> See the cPickle module docs for loads and dumps.

In particular note:

     Warning: The pickle module is not intended to be secure
     against erroneous or maliciously constructed data. Never
     unpickle data received from an untrusted or
     unauthenticated source.

Pickle works great for lots of things, but combining
pickle and socket is scary. If an unfriendly can connect
to our socket, they can feed us a *poison* pickle. The
marshal module is at least as bad.

The marshaling in RPC facilities tends to be much safer.


-- 
--Bryan


From devnew at gmail.com  Tue Oct 16 13:38:30 2007
From: devnew at gmail.com (devnew at gmail.com)
Date: Tue, 16 Oct 2007 10:38:30 -0700
Subject: PIL and getpixel()
In-Reply-To: <5nj6p6FiilfrU1@mid.uni-berlin.de>
References: <1192518356.021602.276860@y27g2000pre.googlegroups.com>
	<5nj6p6FiilfrU1@mid.uni-berlin.de>
Message-ID: <1192556310.929866.231930@z24g2000prh.googlegroups.com>


> Just pack the RGB values into an `int` by shifting and or-ing.  Untested:
>
> red, green, blue = img.getpixel(x, y)
> pixel_as_int = red << 16 | green << 8 | blue
>
> Ciao,
>         Marc 'BlackJack' Rintsch

thanx Marc

will try that
dn



From hniksic at xemacs.org  Thu Oct 18 12:40:32 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 18:40:32 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
	<1192722090.740342.60950@i13g2000prf.googlegroups.com>
	<87y7e01kcv.fsf@mulj.homelinux.net>
	<1192724835.765738.141790@q5g2000prf.googlegroups.com>
Message-ID: <87przc1im7.fsf@mulj.homelinux.net>

Abandoned <besturk at gmail.com> writes:

> Sorry i can't understand :(
> Yes my database already has data in the "{..}" format and i select
> this and i want to use it for dictionary..

But, do you use Python to create that data?  If so, simply convert it
to pickle binary format instead of "{...}".  As explained in my other
post:

> id-1 | all
> 56    {68:66, 98:32455, 62:655}

If you use Python to create this cache table, then simply don't dump
it as a dictionary, but as a pickle:

id-1 | all
56     <some weird string produced by cPickle.dumps>

When you load it, convert the string to dict with cPickle.loads
instead of with eval.


From python.list at tim.thechases.com  Fri Oct 12 12:06:26 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 12 Oct 2007 11:06:26 -0500
Subject: Simple question about python logic.
In-Reply-To: <1192203159.292973.204470@v23g2000prn.googlegroups.com>
References: <1192203159.292973.204470@v23g2000prn.googlegroups.com>
Message-ID: <470F9B82.9010205@tim.thechases.com>

> I have a file containing following data. But the dimension can be
> different.
> 
> A B C D E F G
> 3 4 1 5 6 2 4
> 7 2 4 1 6 9 3
> 3 4 1 5 6 2 4
> 7 2 4 1 6 9 3
> .
> .
> .
> .
> 
> What is the best approach to make a column vector with the name such
> as A B, etc?


There are a couple different ways to go about it depending on

1) whether just one or whether both dimensions can be different
2) whether you want to extract each column vector

Both of the following should allow for an arbitrary number of
columns:

To map everything, you can do something like

#######################################
infile = file("in.txt")
header_row = infile.next().rstrip('\n').split()
values = [[] for header in header_row]
for line in infile:
    line = line.rstrip('\n').split()
    for dest, value in zip(values, line):
        dest.append(value)
infile.close()
results = dict(zip(header_row, values))
#######################################


which you can then use with

results['A']

However, if you just want a particular column from the file and
don't care about the rest, you can do something like

#######################################
from itertools import islice

column_c = [
 line.rstrip('\n').split()[2]
 for line in islice(file('in'), 1, None)
 ]
#######################################

where "2" is the zero-based column offset you want (in this case,
column C = 2)

-tkc





From ldo at geek-central.gen.new_zealand  Fri Oct  5 02:51:05 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 19:51:05 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>
	<13g9ch1fi5c7se5@corp.supernews.com>	<fe2dl2$4i7$3@lust.ihug.co.nz>
	<13gasot6r5bnu1a@corp.supernews.com> <fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
Message-ID: <fe4mst$jic$1@lust.ihug.co.nz>

In message <mailman.1557.1191561184.2658.python-list at python.org>, Robert
Kern wrote:

> Lawrence D'Oliveiro wrote:
>> In message <13gasot6r5bnu1a at corp.supernews.com>, Steven D'Aprano wrote:
>> 
>>> What does type(os.path) return when you try it?
>> 
>> It returns the type of the value contained in that variable, of course:
>> 
>>     >>> import os
>>     >>> os.path = 3
>>     >>> type(os.path)
>>     <type 'int'>
>> 
>> See, it's just a variable, like any other.
> 
> Oooookay. No one is contending that the "os.path" name can't be reassigned
> to a different object or that the "os.path" name is somehow different from
> any other name in Python. It's not wrong to say that "os is a module"
> either, even though you can obviously reassign that name to another
> object, too.

It is not the _name_ that is being reassigned, it is the _variable_ that the
name is bound to. All names in Python are bound to variables at all times.

> What I meant when I said "os.path is a bit of a weird case" is that, by
> default, the object referred to by the name "os.path" (assuming you've
> imported the standard library's os module) is another module and that os
> itself is a module, not a package like logging is. This is somewhat odd,
> because most modules aren't exposed that way. They are either in their own
> file and accessed by importing them directly, or they are inside a
> package.

That is also true of the module pointed to by os.path. Like any other
non-built-in module, it lives in its own file.

It also helps to keep clear the difference between a "module" and a "module
object". A "module" is the contents of a Python source file, while
a "module object" is a type of in-memory Python object. An "import"
statement generates the latter from the former. See
<http://docs.python.org/ref/types.html>. Admittedly, other parts of the
Python docs do not keep the distinction clear, but the section on "Modules"
in that page does just about do so.

You can't have modules within modules. But there's no reason an attribute of
one module object can't point to another module object. Notice I say "point
to" rather than "contain". There is no sense in which any Python object
can "contain" any other.


From dak at gnu.org  Wed Oct  3 15:10:36 2007
From: dak at gnu.org (David Kastrup)
Date: Wed, 03 Oct 2007 21:10:36 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<l0h7g3tqsgjs948i5o2pb0u2m87m2hbtf0@4ax.com>
	<fe0mhm$c08$1@orkan.itea.ntnu.no> <85sl4sqckf.fsf@lola.goethe.zz>
	<fe0npc$cvq$1@orkan.itea.ntnu.no>
Message-ID: <85hcl8qaj7.fsf@lola.goethe.zz>

bcd at pvv.ntnu.no (Bent C Dalager) writes:

> In article <85sl4sqckf.fsf at lola.goethe.zz>, David Kastrup  <dak at gnu.org> wrote:
>>bcd at pvv.ntnu.no (Bent C Dalager) writes:
>>
>>Not as much "been" liberated, but "turned" liberated.
>
> I expect that either way you split this hair, using "free" in the
> sense of "possessing liberty" is still going to be quite reasonable.
>
>>But picking just a single word from a whole explanation of _one_
>>naming and declaring it as equivalent is not really being careful with
>>language at all.
>
> I have never claimed equivalence. What I have made claims about are
> the properties of one of the meanings of a word. Specifically, my
> claim is that "free" is a reasonable description of some one or some
> thing that has been "liberated".

But it suggests that the natural state would be the unfree state.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum


From jgodoy at gmail.com  Sun Oct  7 08:09:16 2007
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sun, 07 Oct 2007 09:09:16 -0300
Subject: Putting a line from a text file into a variable,
	then moving to next line
References: <LT3Oi.122049$Xa3.24034@attbi_s22>
Message-ID: <orumt4-9sf.ln1@strongwill.g2ctech>

Vernon Wenberg III wrote:

> I'm not really sure how readline() works. Is there a way to iterate
> through a file with multiple lines and then putting each line in a
> variable in a loop?

To know how something works you can always check the docs about this
specific functionality:

>>> a = open('a')
>>> help(a.readline)
Help on built-in function readline:

readline(...)
    readline([size]) -> next line from the file, as a string.
    
    Retain newline.  A non-negative size argument limits the maximum
    number of bytes to return (an incomplete line may be returned then).
    Return an empty string at EOF.

>>> help(a.readlines)
Help on built-in function readlines:

readlines(...)
    readlines([size]) -> list of strings, each a line from the file.
    
    Call readline() repeatedly and return a list of the lines so read.
    The optional size argument, if given, is an approximate bound on the
    total number of bytes in the lines returned.

>>> 


If you are creating new variables on every loop iteration you might be
interested in two things:

        - you can loop directly through the file, on a line by line basis
        - you can assign the read line to a an array




From ladynikon at gmail.com  Wed Oct  3 01:32:00 2007
From: ladynikon at gmail.com (Danyelle Gragsone)
Date: Wed, 3 Oct 2007 01:32:00 -0400
Subject: hello! I am a spammer
In-Reply-To: <1191374268.076080.76280@22g2000hsm.googlegroups.com>
References: <1191374268.076080.76280@22g2000hsm.googlegroups.com>
Message-ID: <59f9c5160710022232r391d98dfv6941551ec8263add@mail.gmail.com>

Ok this is dead.. move along people.. nothing to see here..


From MrJean1 at gmail.com  Sat Oct 27 14:59:27 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Sat, 27 Oct 2007 18:59:27 -0000
Subject: good example of C extension for Mac OS X
In-Reply-To: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
References: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
Message-ID: <1193511567.031547.245260@e34g2000pro.googlegroups.com>

There is a C template in file Modules/xxmodule.c in Python 2.5, maybe
earlier.

/Jean Brouwers

On Oct 27, 8:11 am, chewie54 <dfabrizi... at gmail.com> wrote:
> Hi All,
>
> Does anyone now of a good example to use as template for a  C program
> extension that needs to be built on the Mac OS X.
>
> Thanks,




From steve at holdenweb.com  Wed Oct  3 07:36:33 2007
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 03 Oct 2007 07:36:33 -0400
Subject: interfacing Python interpreter with a VB6 frontend
In-Reply-To: <T8SdnSZ71aS-6J7aRVnytAA@bt.com>
References: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>	<mailman.1442.1191408542.2658.python-list@python.org>
	<T8SdnSZ71aS-6J7aRVnytAA@bt.com>
Message-ID: <fdvus0$6hg$1@sea.gmane.org>

Anonymous wrote:
> 
> Ryan Ginstrom wrote:
> 
>>> On Behalf Of Anonymous
>>> This requires several steps, but the one I am having most 
>>> problem finding info on is the ff:
>>>
>>> 1. using/interacting the Python interpreter from VB6
>>
>> One way to do this might be by creating a COM server with Python, and having
>> VB feed it lines of text and then collect results of execution for display.
>>
>> win32com has demos of COM servers.
>>
>> --
>> Regards,
>> Ryan Ginstrom
>>
> 
> Hi Ryan, do you have a link to the resources you mentioned?. I did a 
> search for win32com - and found this : 
> http://python.net/crew/mhammond/win32/FAQ.html  (most of the links were 
> either dead, or refrerred to using COM from within Python - i.e. the 
> OTHER way round).

You might also want to pick up a copy of Hammond and Robinson's 
"Programming Win32 in Python", which discusses various ways of 
front-ending Python programs with VB interfaces.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From iainking at gmail.com  Thu Oct 18 09:48:00 2007
From: iainking at gmail.com (Iain King)
Date: Thu, 18 Oct 2007 13:48:00 -0000
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <13hddo2obghq5c0@corp.supernews.com>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<13hddo2obghq5c0@corp.supernews.com>
Message-ID: <1192715280.994649.172110@q3g2000prf.googlegroups.com>

On Oct 18, 2:29 am, Grant Edwards <gra... at visi.com> wrote:
> On 2007-10-17, Debajit Adhikary <debaj... at gmail.com> wrote:
>
> > # Start of Code
>
> > def evenOdd():
> >     values = ["Even", "Odd"]
> >     state = 0
> >     while True:
> >         yield values[state]
> >         state = (state + 1) % 2
>
> I'd replace the last line with
>
>           state ^= 1
>
> to save a couple instructions, but I spend too much time
> working with micoroprocessors running on clocks measured in the
> KHz.
>
> There are probably other more Pythonic ways...
>


I always use:

           state = 1 - state

for toggles.  I doubt it's much more pythonic though :)

Iain



From carsten at uniqsys.com  Sat Oct 20 16:22:30 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Sat, 20 Oct 2007 16:22:30 -0400
Subject: Get the instance name from a list by Reflection
In-Reply-To: <57045.94694.qm@web90513.mail.mud.yahoo.com>
References: <57045.94694.qm@web90513.mail.mud.yahoo.com>
Message-ID: <1192911750.3157.2.camel@localhost.localdomain>

On Sat, 2007-10-20 at 21:10 +0200, sccs cscs wrote:
> Hello,
> I cannot find into documentation how to get the instance name.

That's because this is, in general, impossible. An object can have any
number of names, even zero names, and an object doesn't know which names
it has.

Why do you think you need to find out an object's name?

-- 
Carsten Haese
http://informixdb.sourceforge.net




From gnewsg at gmail.com  Tue Oct 16 08:57:00 2007
From: gnewsg at gmail.com (Giampaolo Rodola')
Date: Tue, 16 Oct 2007 05:57:00 -0700
Subject: Integrating a GUI with an asyncore-based server
Message-ID: <1192539420.339683.285040@v23g2000prn.googlegroups.com>

Hi there.
Just for the heck of it I'd like to write a simple front-end for an
asyncore-based server I wrote by using Tkinter.
I wrote a simple graphical interface consisting of two buttons: "Start
server" and "Stop server".
The first button should start the asyncore main loop while the second
should obviously stop it.
Actually I can't find a valid solution for doing such a stuff since
this is the first time I'm using a GUI toolkit.
Which is the best approach to use in such case?
Could someone point me in the right direction?



From raims at dot.com  Sat Oct  6 06:45:56 2007
From: raims at dot.com (Lawrence Oluyede)
Date: Sat, 6 Oct 2007 12:45:56 +0200
Subject: Yet another comparison of Python Web Frameworks
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
Message-ID: <1i5kbfo.xq3fut1f7ouujN%raims@dot.com>

Thomas Wittek <mail at gedankenkonstrukt.de> wrote:
> At least, you missed Turbo Gears :)
> http://turbogears.org/
> For me, it feels more integrated than Pylons.

Yeah, so integrated that the next version will be based upon Pylons ;-)
?

-- 
Lawrence, oluyede.org - neropercaso.it
"It is difficult to get a man to understand 
something when his salary depends on not
understanding it" - Upton Sinclair


From python.list at tim.thechases.com  Thu Oct 18 16:09:11 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 18 Oct 2007 15:09:11 -0500
Subject: Can you escape a % in string that will used for substitution
In-Reply-To: <4717B245.7010702@andrew.cmu.edu>
References: <4717B245.7010702@andrew.cmu.edu>
Message-ID: <4717BD67.70103@tim.thechases.com>

> Is there a way to do:
> 
> s = "I like python %i%s of the time."
> print s % (99, "%")
> 
> without having to pass in "%"?

You mean like

  s = "I like python %i%% of the time."
  print s % 99

http://docs.python.org/lib/typesseq-strings.html

-tkc






From khemkaamit at gmail.com  Tue Oct 23 09:50:11 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Tue, 23 Oct 2007 19:20:11 +0530
Subject: How can i protect text format ?
In-Reply-To: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
References: <1193146218.068145.61540@y27g2000pre.googlegroups.com>
Message-ID: <1360b7230710230650w2fb1a6des14eea90a193d2c4f@mail.gmail.com>

On 10/23/07, Abandoned <besturk at gmail.com> wrote:
> Hi..
> I want to do a forum with python but i have a problem..
>
> I have a <textarea> and i write:
> line 1 hi
> line 2 how r u
>
> And then i save to this database ( colomn data type is text)
> And than it looks "line 1 hi line 2 how r u"..
> How can i protect \n characters ?

I don't think the issue has anything to do with python.

I guess while you are displaying the text into an HTML page the "\n"
characters should be replaced by "<br />" to appear as newlines.

Cheers,
--
Amit Khemka


From bma+lists at subvert.org.uk  Sat Oct 20 21:36:09 2007
From: bma+lists at subvert.org.uk (Benjamin A'Lee)
Date: Sun, 21 Oct 2007 02:36:09 +0100
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
Message-ID: <20071021013609.GA7340@jagger.subvert.org.uk>

On Fri, Oct 19, 2007 at 08:28:14PM -0700, Xah Lee wrote:
[snip...]

Inflammatory and irrelevant. Why not ask questions about Darcs on the
Darcs list, or are you worried that there may be too many people there
who can tell you what a load of rubbish you're talking?

    Ben
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 196 bytes
Desc: Digital signature
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/7fcedb6d/attachment.sig>

From kay.schluehr at gmx.net  Sat Oct  6 12:50:03 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Sat, 06 Oct 2007 09:50:03 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1i5kk8d.qm6uoao9zyz4N%raims@dot.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<fe7otk$21a$1@newsreader2.netcologne.de>
	<mailman.1608.1191668817.2658.python-list@python.org>
	<1i5kk8d.qm6uoao9zyz4N%raims@dot.com>
Message-ID: <1191689403.784479.177650@22g2000hsm.googlegroups.com>

> I really, really like Django (and its community and the competence of
> the developers) and I think it deserves what it has gained and more but
> we are not here to decide who's the best (there's always no best).

+1 QOTW



From __peter__ at web.de  Fri Oct  5 13:42:25 2007
From: __peter__ at web.de (Peter Otten)
Date: Fri, 5 Oct 2007 19:42:25 +0200
Subject: novice list
References: <mailman.1572.1191582075.2658.python-list@python.org>
Message-ID: <fe5t21$98m$00$1@news.t-online.com>

Istv?n wrote:

> Could somebody suggest me a novice Python list, please?

http://mail.python.org/mailman/listinfo/tutor


From bdesth.quelquechose at free.quelquepart.fr  Mon Oct 29 16:06:22 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 29 Oct 2007 21:06:22 +0100
Subject: simple question on dictionary usage
In-Reply-To: <13i6hgrqjs22n7b@corp.supernews.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<13i6hgrqjs22n7b@corp.supernews.com>
Message-ID: <47263d6c$0$15740$426a74cc@news.free.fr>

Steven D'Aprano a ?crit :
(snip)
> eval("{" + reduce(lambda x,y: y+', '+x, [mo.group(1) for mo in __import__
> ('re').finditer(r"('E.*?'\s*:\s*'.*?'),?", str(record))], "") + "}")

Maman !

Steven, you choose the wrong language. You definitively want Perl !


From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Oct  5 03:07:58 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 05 Oct 2007 09:07:58 +0200
Subject: module confusion
In-Reply-To: <fe3svd$2nb$3@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
Message-ID: <4705e2b7$0$27667$426a74cc@news.free.fr>

Lawrence D'Oliveiro a ?crit :
> In message <13gasot6r5bnu1a at corp.supernews.com>, Steven D'Aprano wrote:
> 
>> What does type(os.path) return when you try it?
> 
> It returns the type of the value contained in that variable, of course:

Certainly not. You're confusing Python with C. In Python, 'variables' 
are *not* labels for memory locations containing values. Period

>     >>> import os
>     >>> os.path = 3
>     >>> type(os.path)
>     <type 'int'>
> 
> See, it's just a variable, like any other.

This is bad faith.

 >>> import os
 >>> type(os.path)
<type 'module'>

See, this is a name bound to an object, like any other.


From carsten at uniqsys.com  Fri Oct 12 09:18:20 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 12 Oct 2007 09:18:20 -0400
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <1192195100.3406.23.camel@dot.uniqsys.com>

On Fri, 2007-10-12 at 12:58 +0200, Florian Lindner wrote:
> Hello,
> can I determine somehow if the iteration on a list of values is the last
> iteration?
> 
> Example:
> 
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
> 
> that would print
> 
> 1
> 2
> 9

Here's another solution:

mylist = [1,2,3]
for j,i in reversed(list(enumerate(reversed(mylist)))):
  if j==0:
     print i*i
  else:
     print i

;)

-- 
Carsten Haese
http://informixdb.sourceforge.net




From marlenemiller at worldnet.att.net  Wed Oct 10 00:52:13 2007
From: marlenemiller at worldnet.att.net (Marlene Miller)
Date: Wed, 10 Oct 2007 04:52:13 GMT
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
	<m2641g1mgn.fsf@my.address.elsewhere>
	<1191958673.182295.207190@22g2000hsm.googlegroups.com>
	<ok5tt4-2ij.ln1@mantle.rutgers.edu>
Message-ID: <1UYOi.197622$ax1.31214@bgtnsc05-news.ops.worldnet.att.net>

> If nothing else, please use Google.  Many will thank you.
>
http://www.google.com/search?hl=en&q=Definitional+Interpreters+for+Higher-Order+Functions&btnG=Search

http://www.brics.dk/~hosc/vol11/contents.html

Definitional Interpreters for Higher-Order Programming Languages

Definitional Interpreters Revisited




From gagsl-py2 at yahoo.com.ar  Tue Oct 30 20:36:09 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 30 Oct 2007 21:36:09 -0300
Subject: redundancy_check
References: <aa405c1f0710300514u60171abekff315148f3ff40e@mail.gmail.com>
Message-ID: <op.t01dajatx6zn5v@gabriel2.softlabbsas.com.ar>

En Tue, 30 Oct 2007 09:14:08 -0300, Beema shafreen  
<beema.shafreen at gmail.com> escribi?:

> hi everbody,
>                 I have a file,
>  a             b                      c
> 1454    VALTGLTVAEYFR    8.9954e-07
> 1454    VALTGLTVAEYFR    0.00404626
> 1498    STLTDSLVSK    0.00404626
> 1505    TIAMDGTEGLVR    1.50931e-05
> 1528    GAEISAILEER    0.00055542
> 1528    GAEISAILEER    0.00055542
> 1538    YPIEHGIITNWDDMEK    0.0180397
> 1540    YPIEHGIITNWDDMEK    3.69329e-05
> 1552    AQIVGGFPIDISEAPYQISLR    0.015136
>
>
> The file has redundancy in lines ,  I have to print the line without
> redundancy on consideration to the column c of the two lines which are
> redundant and those that are having column c  lesser value than the  
> other.
> how do i do it.

A manual, step-by-step procedure:

1) Open the file: f = open(...)
2) Iterate over the file contents: for line in f:
3) Split each line in its three fields: line.split() -> a,b,c
4) Remember to convert c to float
5) Append (a,b,c) to some list L (which should start empty)
6) When finished, sort the list: L.sort()
7) Iterate over L items: for a,b,c in L, keeping track of "previous" a and  
b values
8) If either a or b changed, print a, b and c.
9) Update the "previous" a and b values
10) When finished with L, you're done.

-- 
Gabriel Genellina



From alexdboy at citiz.net  Sun Oct 28 05:54:10 2007
From: alexdboy at citiz.net (alexdboy)
Date: Sun, 28 Oct 2007 17:54:10 +0800
Subject: How to compile a 32 bit version python on a 64 bit linux platform
Message-ID: <006001c81948$7d8b4cc0$6400a8c0@Admin>

Hi,

  I'm trying to build a 32 bit version Python from the source of Python 2.4.2 (later version is O.K. too) on a 64 bit platform "SUSE Linux Entrprise Server 10(x86_64) - Kernel 2.6.16.21-0.8-smp(5)".

  I followed the common routine "1)./configure --enable-shared --with-threads 2)make clean; make". I succeeded in building Python. 

  The problem is that the resulting .h file and libraries are incompatible with my main program which was compiled using the gcc flag "-m32".

  I've tried modifying the pyconfig.h (changing the size of void * from 8 to 4) and Makefile (adding -m32 to the CFLAGS) generated by running configure script, and then makeing. But this didn't work. Are there any flags I can use when running the ./configure to achieve the target. Any advice will be appreciated. Thank you.










_______________________________________________________________________________


????? ????????????????????????????


http://www.citiz.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071028/0d6d709c/attachment.html>

From tjreedy at udel.edu  Mon Oct 29 17:10:14 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 29 Oct 2007 17:10:14 -0400
Subject: sorting data
References: <aa405c1f0710290224gb307d45lf8aadf16055b1d0@mail.gmail.com>
Message-ID: <fg5i7n$61l$1@ger.gmane.org>


"Beema shafreen" <beema.shafreen at gmail.com> wrote in message 
news:aa405c1f0710290224gb307d45lf8aadf16055b1d0 at mail.gmail.com...
| hi all,
|           I have problem to sort the data.. the file includes data as
| follow.
| file:
| chrX:    123343123    123343182    A_16_P41787782
[snip]

| how do is sort the file based on the column 1 and 2 with values......
| using sort option works for only one column and not for the other how do 
is
| sort both 1 and 2nd column so that the third column does not change.....
| my script

If I understand correctly, the following untested version of your code 
should do what you ask.  Otherwise, you need to be more specific.

lis = []
fh = open('chromosome_location_346010.bed','r')
for line in fh.readlines():
    data = line.strip().split('\t')
    start = data[1].strip()
    end = data[2].strip()
    probe_id  = data[3].strip()
    lis.append((start,end),probe_id)

lis.sort()

tjr





From hniksic at xemacs.org  Mon Oct 29 17:08:45 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 29 Oct 2007 22:08:45 +0100
Subject: setting variables in outer functions
References: <mailman.598.1193689199.13605.python-list@python.org>
Message-ID: <87myu1k4rm.fsf@mulj.homelinux.net>

Tommy Nordgren <tommy.nordgren at comhem.se> writes:

> Given the following:
> def outer(arg)
>      avar = ''
>      def inner1(arg2)
>           # How can I set 'avar' here ?

I don't think you can, until Python 3:
http://www.python.org/dev/peps/pep-3104/

Currently the (ugly) solution is to change variable assignment to
object mutation:

def outer(arg)
     avar = ['']
     # use avar[0] where you'd normally use avar
     def inner1(arg2)
          # modify the value of avar by setting avar[0]


From bj_666 at gmx.net  Wed Oct 31 04:48:32 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 31 Oct 2007 08:48:32 GMT
Subject: jpeg image read class
References: <1193813298.847806.281490@i38g2000prf.googlegroups.com>
Message-ID: <5oqtr0Fo3gssU2@mid.uni-berlin.de>

On Wed, 31 Oct 2007 06:48:18 +0000, devnew at gmail.com wrote:

> i am new to python and PIL and was trying to write a class to read and
> write RGB color model jpeg images..

PIL already offers such a class.

> i came up with this class below..i want to know if this is the way to
> read/write the RGB color model jpeg..if anyone can give feedback (esp
> on the methods  writeImage1( )  and writeImage2( )   it wd help my
> studies ..

Those are bad names.  What does 1 and 2 mean in them!?

> class JPGFile:
> 	def __init__(self,filename):
> 		self._filename=filename
> 		self._height=0
> 		self._width=0
> 		self._mode=""

This will always be 'RGB' so why store it?

> 		self._rgblist=[]
> 		self._pixellist=[]
> 		self._pixarray=None

In the end you store the image *three times* in different representations.
Is that really necessary?

> 		self.readImage()

Is `readImage()` supposed to be called again later?  If not you might add
an underscore in front and give the file name as argument.  Then you could
drop `self._filename`.

> 	def getheight(self):
> 		return self._height
> 	def getwidth(self):
> 		return self._width
> 
> 	def getpixellist(self):
> 		return self._pixellist
> 
> 	def getrgblist(self):
> 		return self._rgblist

Maybe get rid of those trivial getters and the underscore in front of the
names.  That's a little "unpythonic".  Do a web search for "Python is not
Java".

> 	def makepixval(self,(r,g,b)):
> 		alpha=255
> 		pixval=(alpha<<24)|(r<<16 )|( g<<8) | b
> 		return pixval

Looks like an ordinary function to me.  `self` is not used.

> 	def readImage(self):
> 		im=Image.open(self._filename)
> 		self._mode=im.mode
> 		self._width,self._height=im.size
> 		for y in range(self._height):
> 			for x in range(self._width):
> 				r,g,b=im.getpixel((x,y))
> 				self._rgblist.append((r,g,b))
> 				pval=self.makepixval((r,g,b))
> 				self._pixellist.append(pval)
> 		self._pixarray=array(self._pixellist,float)

Iterating over `im.getdata()` should be simpler and faster than the nested
loops.

> 	def makergb(self,pixval):
> 		alpha=pixval>>24
> 		red=(pixval>>16 )&255
> 		green=(pixval>>8 )&255
> 		blue=(pixval)& 255
> 		return red,green,blue

Again a simple function.

> 	def writeImage1(self,fname,data,width,height):
> 		imnew=Image.new(self._mode,(width,height))
> 		newrgblist=[]
> 		for i in range(len(data)):
> 			r,g,b=self.makergb(data[i])
> 			newrgblist.append((r,g,b))

If you have ``for i in range(len(something)):`` you almost always really
wanted to iterate over `something` directly.  That loop can be written as:

        for pixval in data:
            rgb = pixval2rgb(pixval)
            rgbs.append(rgb)

Or even shorter in one line:

        rgbs = map(pixval2rgb, data)

If the `numpy` array is what you want/need it might be more efficient to do
the RGB to "pixval" conversion with `numpy`.  It should be faster to shift
and "or" a whole array instead of every pixel one by one in pure Python.

Ciao,
	Marc 'BlackJack' Rintsch


From zzbbaadd at aol.com  Wed Oct 24 01:12:33 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Tue, 23 Oct 2007 22:12:33 -0700
Subject: Python Windows Installation
In-Reply-To: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
Message-ID: <1193202753.386280.255410@q5g2000prf.googlegroups.com>

I manually created C:\Python25 the reran the install program. The
installation program noted that C:\Python25 existed and asked me if I
still wanted to install there. After I said yes it installed to C:\.




From frgo at goenninger.net  Tue Oct  2 12:43:43 2007
From: frgo at goenninger.net (Frank Goenninger)
Date: Tue, 2 Oct 2007 18:43:43 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <fdtsfu$iq6$03$1@news.t-online.com>

On 2007-10-01 23:37:28 +0200, Wildemar Wildenburger 
<lasses_weil at klapptsowieso.net> said:

> Frank Goenninger wrote:
>> On 2007-09-29 01:27:04 +0200, Damien Kick <dkixk at earthlink.net> said:
>> 
>>> If you were referring to the "free" in "free Mumia Abu Jamal", I would 
>>> agree with you.  I don't think anyone would imagine that this phrase 
>>> meant that someone was going to get Mumia Abu Jamal gratis.  Like it or 
>>> not, "free software" referring to "free as in beer" is probably the 
>>> most common interpretation of the phrase for a native English speaker. 
>>> Admittedly, I do not have a "scientific" survey handy.  However, I just 
>>> asked my wife--who has absolutely no interest in anything related to 
>>> programming, has never heard of the FSF, Eric Raymond, nor the 
>>> disagreement between those two camps, nor probably will she ever have 
>>> an interest--what she thinks I mean when I say "free software".  After 
>>> getting over the "why are you asking such a stupid question" phase, the 
>>> first thing that jumped to her mind was "free as in beer".  You can 
>>> stamp, growl, swagger, spit, curse, and bluster all you want on this 
>>> point, but millions of English speakers are going to ignore you anyway. 
>>>   Lucky for most of them, they do not have to suffer the lectures of 
>>> sociopolitically motivated language mavens trying to "correct" them 
>>> from the error of mistaking the meaning of a phrase to be the normal 
>>> meaning of that phrase.
>> 
>> Fully true for non-native English speakers as well. Just did the "wife 
>> test" also - she is a pure software user - and yes, free is "no money, 
>> do what you want" and that's it.
>> 
>> I *never* use the term "free" if I don't want to imply "free beer" 
>> (which is a Good Thing and as such highly valuated - ask any Bavarian). 
>> Using "free" as by FSF or any other lawyer-style 6 pixel font printed 
>> phrasing is pure perfidiousness.
>> 
> I appearantly missed a lot of that conversation, but what is your 
> point? While I agree that the word "free" implies "free of monetary 
> cost" to many people societies, that is by no means set in stone (talk 
> to native americans, blacks, jews, palestinians, etc. about the word 
> free, see what they have to say).
> 
> But that aside: The word free with respect to the FSF and GPL have a 
> perfectly well defined meaning. People may misunderstand that from not 
> knowing the definition but that doesnt make it any less well defined.
> 
> Again, why this discussion?
> /W

Well, I didn't start the discussion. So you should ask the OP about the 
why. I jumped in when I came across the so often mentioned "hey, it's 
all well defined" statement was brought in. I simply said that if that 
"well-definedness" is against "common understanding" then I don't give 
a damn about that clever definitions. Because I have to know that there 
are such definitions - always also knowing that free is not really 
free. It is such a good subject to discuss over and over and over 
without ever reaching any conclusion or resolution because neither FSF 
nor GNU nor the FREE as in FREE BEER defenders will change their mind. 
So, wasting bandwith is the only real effect ... And hey, it's Usenet, 
so wasting time and bandwith is part of the game.

Again, why this discussion - ah - I don't really know...

;-)

-- 
  Frank Goenninger

  frgo(at)goenninger(dot)net

  "Don't ask me! I haven't been reading comp.lang.lisp long enough to 
really know ..."

	



From torriem at chem.byu.edu  Sat Oct 13 00:34:14 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Fri, 12 Oct 2007 22:34:14 -0600
Subject: Cross-platform GUI development
In-Reply-To: <1192178193.734126.253610@z24g2000prh.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
Message-ID: <47104AC6.5080208@chem.byu.edu>

Alexandre Badez wrote:
> Personnaly, I use PyQt simply because I prefere Qt to Gtk, witch is
> much more integrated with all desktop than Gtk.
> In fact, your application in Qt on Mac, Win or Linux look like a
> native app.

Qt doesn't look very native on my desktop.  In fact, Qt apps have always
looked out of place on a Gnome desktop.

On Windows and Mac, no question, they look pretty native.  You do have
to take pains to make the app "feel" native, though.  Like follow the UI
guidelines of the platform,  etc.

> 
> Just a question of "feeling" I think; because most of those GUI
> framework, offer quiet the same functionality.


> 



From steven.bethard at gmail.com  Mon Oct 22 14:43:05 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 22 Oct 2007 12:43:05 -0600
Subject: Automatic Generation of Python Class Files
In-Reply-To: <1193076352.576143.123260@z24g2000prh.googlegroups.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
Message-ID: <ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>

Sunburned Surveyor wrote:
> Contents of input text file:
> 
> [Name]
> Fire Breathing Dragon
> 
> [Properties]
> Strength
> Scariness
> Endurance
> 
> [Methods]
> eatMaiden argMaiden
> fightKnight argKnight
> 
> Generated Python Class File:
> 
> def class FireBreathingDragon:
> 
>    def getStrength(self):
>       """
>       Docstring goes here.
> 
>       @return
>       @rtype
>       """
>       return self.strength
> 
>    def setStrength(self, argStrength):
>       """
>       Docstring goes here.
> 
>       @param argStrength
>       @ptype
>       """
>       return self.strength
> 
>    def eatMaiden(self, argMaiden):
>       """
>       Docstring goes here.
> 
>       @param argMaiden
>       @ptype
>       """

This should instead generate::

# Inherit from object. There's no reason to create old-style classes.
class FireBreathingDragon(object):

    # Python is not Java. You don't need getters and setters.
    # Use public attributes. If you ever decide later that you
    # need different attributes, you can always use property()
    # to make your getters and setters look like public attributes
    def __init__(self, stregth, scariness, endurance):
        self.strength = strength
        self.scariness = scariness
        self.endurance = endurance


STeVe


From geraint.williams at gmail.com  Tue Oct 30 03:43:37 2007
From: geraint.williams at gmail.com (GHZ)
Date: Tue, 30 Oct 2007 07:43:37 -0000
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <1193730217.410792.249660@i38g2000prf.googlegroups.com>

Thanks for the answers,  I suspected something like any(), all()
existed.  Also got me thinking about generator expressions, my code is
full of list comprehensions for lists I don't keep.



From vwenberg at gmail.com  Sun Oct  7 08:00:44 2007
From: vwenberg at gmail.com (Vernon Wenberg III)
Date: Sun, 07 Oct 2007 12:00:44 GMT
Subject: Putting a line from a text file into a variable, then moving to next
	line
Message-ID: <LT3Oi.122049$Xa3.24034@attbi_s22>

I'm not really sure how readline() works. Is there a way to iterate 
through a file with multiple lines and then putting each line in a 
variable in a loop?


From fred.sells at adventistcare.org  Thu Oct 11 11:46:57 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Thu, 11 Oct 2007 11:46:57 -0400
Subject: RMI with Pyro et al -- thanks for help
In-Reply-To: <5n6pauFgghv4U1@mid.uni-berlin.de>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38EA@acesxch01.ADVENTISTCORP.NET>

thanks, that should do it

Diez wrote:
> Go install cygwin (but not it's included python-interpreter, 
> or at least
> make sure you have your python path properly under control) 
> and then simply
> start the script from the command-line. And hit C-c if you 
> need it to stop,
> and restart it. Only start it as service if it's deployed.
> 
> Diez
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


From aisaac at american.edu  Wed Oct 10 12:54:45 2007
From: aisaac at american.edu (Alan Isaac)
Date: Wed, 10 Oct 2007 16:54:45 GMT
Subject: unpickle from URL problem
In-Reply-To: <873awjgeo8.fsf@mulj.homelinux.net>
References: <vSZOi.5979$rD1.4849@trnddc01> <873awjgeo8.fsf@mulj.homelinux.net>
Message-ID: <pt7Pi.8044$8F.1186@trnddc05>

Hrvoje Niksic wrote:
> The first upload breaks the file.  You uploaded it in (presumably
> FTP's) text mode, which changes \n -> \r\n.  But you download it using
> http, which specifies no such conversion in the opposite direction.

No: I used binary upload both time.
(Unless my ftp client is broken, and I think not.)

The first example simply keeps the Windows eols,
which are present in the pickled file on my Windows machine.
This is the one created by pickle.dump.
This file unpickles just fine.

I altered the 2nd file before upload,
changing to the Unix eol convention.
This also unpickles just fine on my machine,
but in addition the urllib download of this
file unpickles just fine.
 
Alan Isaac


From deets at nospam.web.de  Fri Oct 26 18:55:21 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 27 Oct 2007 00:55:21 +0200
Subject: Going past the float size limits?
In-Reply-To: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
Message-ID: <5of9jaFm297hU1@mid.uni-berlin.de>

jimmy.musselwhite at gmail.com schrieb:
> Hello all
> It would be great if I could make a number that can go beyond current
> size limitations. Is there any sort of external library that can have
> infinitely huge numbers? Way way way way beyond say 5x10^350 or
> whatever it is?
> 
> I'm hitting that "inf" boundary rather fast and I can't seem to work
> around it.

http://gmpy.sourceforge.net/

Diez


From pavlovevidence at gmail.com  Mon Oct 29 19:18:43 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Mon, 29 Oct 2007 16:18:43 -0700
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <1193699923.229667.250240@19g2000hsx.googlegroups.com>

On Oct 29, 6:57 pm, GHZ <geraint.willi... at gmail.com> wrote:
> Is this the best way to test every item in a list?
>
> def alltrue(f,l):
>     return reduce(bool.__and__,map(f,l))
>
> def onetrue(f,l):
>     return reduce(bool.__or__,map(f,l))

Probably not, because it doesn't take advantage of short circuiting.
You could bail out of alltrue as soon as the first item you see is
false, but your version applies f to every item in the list.  I would
suggest the most straightforear way is the best:

def alltrue(f,l):
    for item in l:
        if not f(item):
            return False
    return True


On Python 2.5, you could do this:

all(f(x) for x in l)


Carl Banks



From ggpolo at gmail.com  Fri Oct 26 18:57:33 2007
From: ggpolo at gmail.com (Guilherme Polo)
Date: Fri, 26 Oct 2007 20:57:33 -0200
Subject: Going past the float size limits?
In-Reply-To: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
Message-ID: <ac2200130710261557r1429fefes3c4edae09cf03949@mail.gmail.com>

2007/10/26, jimmy.musselwhite at gmail.com <jimmy.musselwhite at gmail.com>:
> Hello all
> It would be great if I could make a number that can go beyond current
> size limitations. Is there any sort of external library that can have
> infinitely huge numbers? Way way way way beyond say 5x10^350 or
> whatever it is?

Check the decimal module

>
> I'm hitting that "inf" boundary rather fast and I can't seem to work
> around it.
>
> Thanks!
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves


From dan at telent.net  Mon Oct  1 20:16:25 2007
From: dan at telent.net (dan at telent.net)
Date: Tue, 02 Oct 2007 01:16:25 +0100
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <pmnLi.1684$hP.1048@newsfe12.lga>
References: <1182093200.598418.218620@e9g2000prf.googlegroups.com>
	<1182272495.990807.99110@a26g2000pre.googlegroups.com>
	<87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga>
Message-ID: <47018e25$0$13927$fa0fcedb@news.zen.co.uk>

Ken Tilton wrote:
> Kenny happened to solve the traveling 
> salesman problem and protein-folding and passed the fricking Turing test 
> by using add-42 wherever he needed 42 added to a number, and  RMS wants 
> credit and ownership and control of it all. 

That might be what RMS wants (or not, I've never asked him), but it 
doesn't follow from the licence.  What follows from the licence is that 
you have to distribute the derived work as GPL _or not at all_.  I 
practice - if not in marketing terms - that's no more a land grab than a 
proprietary licence saying "you can't use this to add your own numbers 
to 42 at all and if you do we'll eat your brains".

The other consideration is that, and notwitshtanding any text to the 
contrary in the GPL, it's not actually up to the copyright holder to 
define what "derived work" means: it's for the court to decide that. 
Now, I don't want to imply that courts are rational animals that can be 
relied on to understand all the issues in technical cases like this (ha, 
I slay myself) but really, if there's a reasonable concern that an 
implementation of the major advances in computer science you describe 
are legally derivative of someone's function that adds 42 to its 
argument, your legal system is fucked.  Redo from start.


-dan


From exarkun at divmod.com  Tue Oct 30 12:02:19 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 30 Oct 2007 11:02:19 -0500
Subject: A Python 3000 Question
In-Reply-To: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>
Message-ID: <20071030160219.8162.1662642581.divmod.quotient.29682@ohm>

On Tue, 30 Oct 2007 15:25:54 GMT, Neil Cerutti <horpner at yahoo.com> wrote:
>On 2007-10-30, Eduardo O. Padoan <eduardo.padoan at gmail.com> wrote:
>> This is a FAQ:
>> http://effbot.org/pyfaq/why-does-python-use-methods-for-some-functionality-e-g-list-index-but-functions-for-other-e-g-len-list.htm
>
>Holy Airy Persiflage Batman!
>
>Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
>win32
>Type "help", "copyright", "credits" or "license" for more information.
>>>> import timeit
>>>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
>0.20332271187463391
>>>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>0.48545737364457864
>

Not sure what you're trying to demonstrate.  Here's another pointless
transcript, though:

    exarkun at charm:~$ python -m timeit -s '
    seq = range(100)
    ' 'len(seq)'
    1000000 loops, best of 3: 0.211 usec per loop
    exarkun at charm:~$ python -m timeit -s '
    seq = range(100)
    ' 'seq.__len__()'
    1000000 loops, best of 3: 0.317 usec per loop
    exarkun at charm:~$ python -m timeit -s '
    class X(object):
      def __len__(self): return 100
    seq = X()
    ' 'seq.__len__()'
    1000000 loops, best of 3: 0.427 usec per loop
    exarkun at charm:~$ python -m timeit -s '
    class X(object):
      def __len__(self): return 100
    seq = X()
    ' 'len(seq)'
    1000000 loops, best of 3: 0.701 usec per loop
    exarkun at charm:~$

I guess we've learned that sometimes something is faster than something
else, and other times the contrary.

Jean-Paul


From sandip.more at gmail.com  Wed Oct 24 12:03:20 2007
From: sandip.more at gmail.com (sandipm)
Date: Wed, 24 Oct 2007 09:03:20 -0700
Subject: Anagrams
In-Reply-To: <1193185723.647144.302410@i13g2000prf.googlegroups.com>
References: <1193127665.868582.257380@z24g2000prh.googlegroups.com>
	<1193185723.647144.302410@i13g2000prf.googlegroups.com>
Message-ID: <1193241800.343932.23170@k35g2000prh.googlegroups.com>

hi,
 Is "all" inbuilt function in python? what it does?


> from itertools import ifilter, count
>
> def anagram_finder():
>      primes = ifilter(lambda p: all(p % k for k in xrange(2, p)), count(2))
                                  ^^^^
>      primeAlpha = dict(zip(string.lowercase, primes))
>      ...


--
sandip



From gbrunick at andrew.cmu.edu  Thu Oct 18 15:21:41 2007
From: gbrunick at andrew.cmu.edu (Gerard Brunick)
Date: Thu, 18 Oct 2007 15:21:41 -0400
Subject: Can you escape a % in string that will used for substitution
Message-ID: <4717B245.7010702@andrew.cmu.edu>

Is there a way to do:

s = "I like python %i%s of the time."
print s % (99, "%")

without having to pass in "%"?

Thanks,
Gerard


From xkenneth at gmail.com  Fri Oct 19 14:26:42 2007
From: xkenneth at gmail.com (xkenneth)
Date: Fri, 19 Oct 2007 18:26:42 -0000
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
Message-ID: <1192818402.479086.252360@e34g2000pro.googlegroups.com>

All,

   Just a quick question. I want to be able to have a data structure
that organizes data (timestamps I'm working with) sequentially, so
that i can easily retrieve the first x amount of timeStamps without
iterating over a list. My thought was to use a binary tree, am i
overthinking the problem to try and implement this structure inside of
python? I was also hoping this would already be done for me.

Regards,
Ken



From bj_666 at gmx.net  Mon Oct 15 06:08:25 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 15 Oct 2007 10:08:25 GMT
Subject: Memory Problems in Windows 2003 Server
References: <470f7857$0$27795$426a74cc@news.free.fr>
	<feo0f7$jd1$2@solaris.cc.vt.edu>
	<4710a5ad$0$26731$426a74cc@news.free.fr>
	<6b63h3p842g6ggafqbc5d4f8n4o48ramdm@4ax.com>
	<4713338b$0$20269$426a74cc@news.free.fr>
Message-ID: <5ngsgpFhiqfbU2@mid.uni-berlin.de>

On Mon, 15 Oct 2007 11:31:59 +0200, amdescombes wrote:

> Are there any classes that implement disk based dictionaries?

Take a look at the `shelve` module from the standard library.

Or object databases like ZODB or Durus.

Ciao,
	Marc 'BlackJack' Rintsch


From mark.dufour at gmail.com  Tue Oct 16 05:32:44 2007
From: mark.dufour at gmail.com (Mark Dufour)
Date: Tue, 16 Oct 2007 11:32:44 +0200
Subject: ANN: Shed Skin 0.0.24, 0.0.25
Message-ID: <8180ef690710160232y14b08866v88fd252278c1087f@mail.gmail.com>

Hi all,

I've just released Shed Skin 0.0.25. Together with the (unannounced)
0.0.24 release, there have been some interesting changes. Most
importantly perhaps, Shed Skin now caches (most) 1-length strings,
which can improve performance dramatically for string-intensive
programs. I also performed a long-overdue rewrite of the virtual
function detection code, which should work much more reliably now, at
least for relatively simple cases :)

0.0.24:
-1-length string caching

0.0.25
-improved detection of virtual functions
-further set optimizations
-fix for extension modules and certain default arguments
-exhaustive checking of C++ keywords
-fix for some combinations of arguments to min, max
-several minor bug fixes

As always, I could really use more help in pushing Shed Skin forward.
Let me know if you'd like to help out, but are not sure where to
begin.


Thanks,
Mark.
--
"One of my most productive days was throwing away 1000 lines of code"
- Ken Thompson


From devraj at gmail.com  Thu Oct 25 20:15:37 2007
From: devraj at gmail.com (Devraj)
Date: Fri, 26 Oct 2007 00:15:37 -0000
Subject: urllib2 weirdness when https_proxy environment variable is exported
Message-ID: <1193357737.787398.135110@q3g2000prf.googlegroups.com>

Hi Everyone,

I have been extensively using Python's urllib2 while developing a
project with the Google Data API. The Google Data API uses httplib to
place all of its requests. However I have been using urllib2 and some
handlers that I discovered in an ASPN article to handle HTTPS proxies
in my code.

The Google Data API relies on an environment variable called
https_proxy to get information about the proxy to be used. However
urllib2 starts spitting out the BadStatusLine exception if the
https_proxy environment variable is found.

Has anyone experienced similar things with urllib2? Is this a bug in
the urllib2 libraries or am I completely missing something here?

Attached is a dump of the error messages. Any experiences/information/
finding are welcome.

Thanks for your time.

Regards,
Devraj

------

Notice the BadStatusLine exception at the end of the error messages,
the https_proxy variable is not even used by the code in anyway. I
have also implemented simpler examples of the code to demonstrate the
same.

root at sidux:/data/gdatacopier# export https_proxy="http://proxy2:8080"
root at sidux:/data/gdatacopier# ./gdoc-cp.py --username
test at debortoliwines.com --list-all
gdoc-cp.py version 1.0, content copy & backup utility for Google
documents & spreadsheets
Distributed under the GNU/GPL v2, Copyright (c) De Bortoli Wines
<http://debortoli.com.au>
Password:
Logging into Google server as test at debortoliwines.com ...Traceback
(most recent call last):
  File "./gdoc-cp.py", line 352, in <module>
    main()
  File "./gdoc-cp.py", line 347, in main
    parse_user_options()
  File "./gdoc-cp.py", line 298, in parse_user_options
    handle_login(_username, _password)
  File "./gdoc-cp.py", line 137, in handle_login
    _copier.login(username, password)
  File "/media/disk/gdatacopier/gdatacopier.py", line 310, in login
    response = self._open_https_url(prepared_auth_url, login_data)
  File "/media/disk/gdatacopier/gdatacopier.py", line 555, in
_open_https_url
    response = opener.open(target_url, urllib.urlencode(post_data))
  File "/usr/lib/python2.5/urllib2.py", line 381, in open
    response = self._open(req, data)
  File "/usr/lib/python2.5/urllib2.py", line 399, in _open
    '_open', req)
  File "/usr/lib/python2.5/urllib2.py", line 360, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.5/urllib2.py", line 675, in <lambda>
    meth(r, proxy, type))
  File "/usr/lib/python2.5/urllib2.py", line 698, in proxy_open
    return self.parent.open(req)
  File "/usr/lib/python2.5/urllib2.py", line 381, in open
    response = self._open(req, data)
  File "/usr/lib/python2.5/urllib2.py", line 399, in _open
    '_open', req)
  File "/usr/lib/python2.5/urllib2.py", line 360, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.5/urllib2.py", line 1107, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "/media/disk/gdatacopier/gdatacopier.py", line 195, in do_open
    return urllib2.HTTPHandler.do_open(self, ProxyHTTPConnection, req)
  File "/usr/lib/python2.5/urllib2.py", line 1080, in do_open
    r = h.getresponse()
  File "/usr/lib/python2.5/httplib.py", line 924, in getresponse
    response.begin()
  File "/usr/lib/python2.5/httplib.py", line 385, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python2.5/httplib.py", line 349, in _read_status
    raise BadStatusLine(line)
httplib.BadStatusLine

Exporting the http_proxy variable does what one would expect

root at sidux:/data/gdatacopier# export http_proxy="http://proxy2:8080"
root at sidux:/data/gdatacopier# ./gdoc-cp.py --username
test at debortoliwines.com --list-all
gdoc-cp.py version 1.0, content copy & backup utility for Google
documents & spreadsheets
Distributed under the GNU/GPL v2, Copyright (c) De Bortoli Wines
<http://debortoli.com.au>
Password:
Logging into Google server as test at debortoliwines.com ...Traceback
(most recent call last):
  File "./gdoc-cp.py", line 352, in <module>
    main()
  File "./gdoc-cp.py", line 347, in main
    parse_user_options()
  File "./gdoc-cp.py", line 298, in parse_user_options
    handle_login(_username, _password)
  File "./gdoc-cp.py", line 137, in handle_login
    _copier.login(username, password)
  File "/media/disk/gdatacopier/gdatacopier.py", line 292, in login
    self._gd_client.ProgrammaticLogin()
  File "/usr/lib/python2.5/site-packages/gdata/service.py", line 307,
in ProgrammaticLogin
    auth_connection.endheaders()
  File "/usr/lib/python2.5/httplib.py", line 856, in endheaders
    self._send_output()
  File "/usr/lib/python2.5/httplib.py", line 728, in _send_output
    self.send(msg)
  File "/usr/lib/python2.5/httplib.py", line 695, in send
    self.connect()
  File "/usr/lib/python2.5/httplib.py", line 1130, in connect
    sock.connect((self.host, self.port))
  File "<string>", line 1, in connect
socket.gaierror: (-2, 'Name or service not known')



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 15:09:12 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 16 Oct 2007 21:09:12 +0200
Subject: some questions about Python and tkinter
In-Reply-To: <1192560742.328460.256200@y27g2000pre.googlegroups.com>
References: <1192560742.328460.256200@y27g2000pre.googlegroups.com>
Message-ID: <47150c90$0$26767$426a74cc@news.free.fr>

fabdeb a ?crit :
> Hi every one,
> I m a sysadmin who want to know how to use python.
> I dont know anything about oriented object programation, i only know
> bash and a little perl.
> I have some simple questions about python.
> 
> the first: what is the differences between a function and a classe?

I suppose you do know what a function is. Else it would be time to go 
for some CS introductory material...

A class is the definition of a family of objects. If that doesn't mean 
anything to you, then just forget about classes and OOP for now.

> In which case i should use a function ?

When you have a (mostly self-contained) piece of code you want to call 
by name from different places.

> In which case i should use a class ?

If you don't know, then don't use them for the moment. First learn to 
use Python without them.

> The second: there is some pincipals gui toolkit: tkinter , Python Mega-
> Widgets, PyGTK, PyQt, FxPy, WxPy
> 
> what are the advantages of each one, and in which case i use each of
> them?

This is a FAQ IIRC.


From praddyjindal at gmail.com  Mon Oct 29 05:25:00 2007
From: praddyjindal at gmail.com (Pradeep Jindal)
Date: Mon, 29 Oct 2007 14:55:00 +0530
Subject: SQLObject - Connect to established DB with non-int 'id' field
In-Reply-To: <1192839228.836892.139780@e9g2000prf.googlegroups.com>
References: <1192839228.836892.139780@e9g2000prf.googlegroups.com>
Message-ID: <200710291455.01066.praddyjindal@gmail.com>

On Saturday 20 Oct 2007 5:43:48 am Sean DiZazzo wrote:
> Hi all,
>
> I am just beginning with TurboGears and have run into a problem with
> SQLObject.
>
> I'm trying to connect to an established mysql DB, and use TurboGears
> to display results from the DB only.  The problem is that the DB
> already has an 'id' field that is a string as opposed to an int.
> SQLObject complains because it wants to use the id field for it's own
> purposes.
>
> How can I use TurboGears to get data out of this DB?
>
> Thanks in advance.
>
> ~Sean
I know I am not exactly answering your question, but its much better to use 
sqlalchemy when you already have the databases setup. And especially when you 
can not make any changes to existing database schemas.

- Pradeep


From root at dev.nul.invalid  Tue Oct 23 00:50:27 2007
From: root at dev.nul.invalid (Ohmster)
Date: Tue, 23 Oct 2007 06:50:27 +0200 (CEST)
Subject: Python - why don't this script work?
References: <Xns99D1DDAA9F9F3MyBigKitty@194.177.96.26>
	<1193108392.089611.91170@v29g2000prd.googlegroups.com>
Message-ID: <Xns99D288BAE44EMyBigKitty@194.177.96.26>

Adam Atlas <adam at atlas.st> wrote in news:1193108392.089611.91170
@v29g2000prd.googlegroups.com:

> I think you're executing it as a shell script. Run "python image-
> harvester.py", or add "#!/usr/bin/env python" to the top of the file.
> 

Hey that is a cool idea, I think I will try it. I found out what is wrong 
and did not get the results I want, I think the images are protected with 
script. See my other post in this thread for details.

Shoot, the followup might have gone to alt.os.linux. I will repost for you 
here.

I figured it out, I have to run python I think first then the script and 
the URL like this:

$ python image-harvester.py http://public.fotki.com/DaGennelman/

Now that actually seems to be doing something and it sure is busy now. It 
is making a lot of little subdirectories in my test directory. I had to 
copy image-harvester.py to the test directory first, then run python and 
image-harvester.py w/URL and it is going to town. Tons of subfolders, so 
far not images yet but it is not done. At least it is doing something now 
and not bitching and hanging. I guess I had to call up python and pass it 
to the script as the script does not seem to pull up python on it's own. So 
far I have 60 directories and about 45 robots.txt but no jpg files yet. I 
will let you know what happens. I think that these images are protected by 
script, you never get a valid URL to the imgage file, just referrers, and 
numbers and what not. When the image is finally displayed in your browser, 
then you can save it but not until then. Pretty good way to stop a 
harvester. Is this assumption pretty much correct or is there a way to make 
this work? Now that I use python as the first command, I can run it in an 
ssh window now and do not require an x-server.

Feel free to jump right in with your input on how this should or won't work 
and what can be done to make it better. I have all of my scripts in a 
$HOME/scripts/ directory and it is in my path but running this from another 
directory does not work if image-harvester.py is not in the harvest 
directory where I run the script from. I can right click on the image and 
save it but the amazing script trips all over itself with these wacky file 
name. I am all ears if someone figures it.

-- 
~Ohmster | ohmster /a/t/ ohmster dot com
Put "messageforohmster" in message body
(That is Message Body, not Subject!)
to pass my spam filter.


From bohnenkamp at mevisbreastcare.de  Mon Oct  1 05:15:23 2007
From: bohnenkamp at mevisbreastcare.de (Sascha Bohnenkamp)
Date: Mon, 01 Oct 2007 11:15:23 +0200
Subject: which language allows you to change an argument's value?
In-Reply-To: <47000ed3$0$90272$14726298@news.sunsite.dk>
References: <1191149233.346818.246170@22g2000hsm.googlegroups.com>
	<P3MLi.10035$ZA.6750@newsb.telia.net>
	<47000ed3$0$90272$14726298@news.sunsite.dk>
Message-ID: <5mbs5bFc1h1bU1@mid.individual.net>

> Neither C or Java has call by reference.
> C pointers and Java references may work similarly in most cases
> but it is still call by value.
so what? the references in c++ are passed by value too, its just a nice
interface to pointers.
At the end those parameters are pushed on the stack .. thats it.


From goldtech at worldpost.com  Thu Oct  4 23:16:14 2007
From: goldtech at worldpost.com (goldtech)
Date: Thu, 04 Oct 2007 20:16:14 -0700
Subject: tkinter question
Message-ID: <1191554174.490449.251400@50g2000hsm.googlegroups.com>

This works OK. But I notice that if I enlarge the window after the
script has run, the white listbox only gets "so" big while the grey
background enlarges.

Is there a way to have it all white when I enlarge a window - like
what normally happens?



from Tkinter import *
root = Tk()
root.title("Dirty Words")
scrollbar = Scrollbar(root)
scrollbar.pack(side=RIGHT, fill=Y)
listbox = Listbox(root, bg='white', font = "Courier 16", width=60)
listbox.pack()
i='123456789abcdefghijklmnopqrstuvwxyz'
for x in range(10):
    listbox.insert(END, i)
listbox.config(yscrollcommand=scrollbar.set)
scrollbar.config(command=listbox.yview)
mainloop()



From eduardo.padoan at gmail.com  Fri Oct  5 18:32:37 2007
From: eduardo.padoan at gmail.com (Eduardo O. Padoan)
Date: Fri, 5 Oct 2007 19:32:37 -0300
Subject: unit testing
In-Reply-To: <1191616293.965858.43000@d55g2000hsg.googlegroups.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
	<1191616293.965858.43000@d55g2000hsg.googlegroups.com>
Message-ID: <dea92f560710051532p316f26f4q63230c286c0ef06e@mail.gmail.com>

> What's the equivalent of unittest's "assertRaises"?
> In certain situations it is also useful to test wether an exception
> (along its type) is raised or not.
> Does py.test support such thing?

import py.test

py.test.raises(NameError, "blablabla")

-- 
http://www.advogato.org/person/eopadoan/
Bookmarks: http://del.icio.us/edcrypt


From see at signature.invalid  Tue Oct  2 23:20:21 2007
From: see at signature.invalid (Nigel Rowe)
Date: Wed, 03 Oct 2007 13:20:21 +1000
Subject: hello! I am a spammer
References: <1191374268.076080.76280@22g2000hsm.googlegroups.com>
Message-ID: <47030a84$0$14886$c3e8da3@news.astraweb.com>

On Wed, 3 Oct 2007 11:17, panguohua wrote in comp.lang.python 
> more information for making money with your blog
<snip />

Wow! Truth in advertising!

-- 
        Nigel Rowe
        A pox upon the spammers that make me write my address like..
                rho (snail) fisheggs (stop) name


From jgardner.jonathangardner.net at gmail.com  Tue Oct 30 18:38:00 2007
From: jgardner.jonathangardner.net at gmail.com (Jonathan Gardner)
Date: Tue, 30 Oct 2007 22:38:00 -0000
Subject: why did these companies choose Tcl over Python
In-Reply-To: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <1193783880.379248.247550@57g2000hsv.googlegroups.com>

On Oct 30, 2:25 pm, chewie54 <dfabrizi... at gmail.com> wrote:
>
> I would prefer to use Python but can't deny how popular Tcl is,  as
> mentioned above,  so my question is why wasn't Python selected by
> these companies as the choice of scripting languages for their
> product?
>

Here are some reasons why people choose language X over Y:

- History. We've always used X, so why should we use Y?
- Peer pressure. Everyone else uses X.
- Licensing. Language X's license fits our business better than
language Y.
- Support. It is easier/safer/etc... to get support for language X
over language Y. (In some cases, the company that wrote X provides
support contracts while language Y doesn't have such a company.)
- Customer demands. Our customers want language X support, not Y.
- Features. Language X does A, B, and C really well, while language Y
only does it a little bit or not very well.

You'd have to ask them why they do what they do, but it's probably a
combination of the above. Oftentimes, the reasons cited are based on
assumptions and not facts. Of course, objectively measuring any
language is difficult at best, so there is little hope of this ever
getting any better.

As far as performance, memory footprint, cross-platform support, I
don't believe Tcl is better than Python (and probably not worse), at
least compared to C.

Tcl might also be a more natural language for hardware people who have
a hard time accepting the more esoteric concepts of software
engineering. It's a straight-forward language with little in the way
of what they may consider fluff.



From durumdara at gmail.com  Sat Oct 27 10:06:00 2007
From: durumdara at gmail.com (durumdara at gmail.com)
Date: Sat, 27 Oct 2007 16:06:00 +0200
Subject: A lib to build query string...
Message-ID: <ffvgkb$q3q$1@ger.gmane.org>

Hi!

I have a pager component.
This component is makes database slices (record sets) and it is use 
query string's PageIndex element to identify the actual page.

This component is makes pager buttons in HTML to control.
Like this:
<< < 4 5 6 > >>

My problem that I need to search and I need to use pager in the resultset.

This time I need to give all search parameters to the controller HTML.

I wanna automatize that with this:
qdict = parse_query(query_string)
qdict['pageindex'] = neededpageindex
new_query_string = make_query_string(qdict)

Is anybody knows about a function that can build query string from 
parameter list? I very need that!

Thanks for it!
	dd



From martin at v.loewis.de  Wed Oct  3 10:12:08 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 03 Oct 2007 16:12:08 +0200
Subject: Python and SSL
In-Reply-To: <1191420037.564584.103300@50g2000hsm.googlegroups.com>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
	<1191396724.394393.322320@57g2000hsv.googlegroups.com>
	<4703884A.10905@v.loewis.de>
	<1191420037.564584.103300@50g2000hsm.googlegroups.com>
Message-ID: <4703a338$0$15182$9b622d9e@news.freenet.de>

> After I added certification, that the proxy uses, among those
> Trusted Root Certification Authorities list,as
> Gabriel described on Windows,
> 
> I receive
> sslerror: (1, 'error:140770FC:SSL
> routines:SSL23_GET_SERVER_HELLO:unknown protocol')
> 
> 
> What does it mean?

Technically, it means that OpenSSL does not support the version of
the SSL protocol that the proxy uses.

Practically, it more likely means that the proxy does not use SSL
at all at the port you are connecting to.

What host/port are you connecting to?

Regards,
Martin


From namesagame-usenet at yahoo.com  Tue Oct 16 09:47:06 2007
From: namesagame-usenet at yahoo.com (gamename)
Date: 16 Oct 2007 06:47:06 -0700
Subject: ctypes & Wrapping Complex Datatypes
Message-ID: <1192536861.684885.16140@q3g2000prf.googlegroups.com>

Hi,

I've just started using ctypes and so far, its great.  But I'm running
to some problems with complex datatypes.  I'm not sure how to wrap
something like this:

   /* This defines the Handle type in a header file.  I don't think
this needs wrapping, its just to show the handle definition for
context*/
    typedef struct DFFTSHandle_s *DFFTSHANDLE;
...
  /* Then, the handle is used like this later on.  This *is* what I
want to wrap.*/
    status = DFFTSCreateSession(&Handle);
    status = DFFTSSetSessionOption(Handle, DFFTSOPT_ITERATIONS,
&iteration, sizeof(iteration));


Any ideas?



From besturk at gmail.com  Wed Oct 17 11:09:50 2007
From: besturk at gmail.com (Abandoned)
Date: Wed, 17 Oct 2007 08:09:50 -0700
Subject: Order by value in dictionary
In-Reply-To: <5nmk3kFiv0krU2@mid.uni-berlin.de>
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
	<5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
	<5nmk3kFiv0krU2@mid.uni-berlin.de>
Message-ID: <1192633790.090464.306800@t8g2000prg.googlegroups.com>

Very very thanks everbody..

These are some method..
Now the fastest method is second..

==== 1 ===
def sortt(d):
    items=d.items()
    backitems=[ [v[1],v[0]] for v in items]
    backitems.sort()
    #boyut=len(backitems)
    #backitems=backitems[boyut-500:]
    a=[ backitems[i][1] for i in range(0,len(backitems))]
    a.reverse()
    return a

==== 2 =====
import operator
def sortt(d):
    backitems=d.items()
    boyut=len(backitems)
    backitems=backitems[boyut-500:]
    backitems=sorted(backitems, key=operator.itemgetter(1))
    a=[ backitems[i][0] for i in range(0,len(backitems))]
    a.reverse()
    return a

==== 3 =====
def sortt(d):
    backitems=d.items()
    backitems.sort(lambda x,y:cmp(x[1],y[1]))
    backitems=sorted(backitems, key=operator.itemgetter(1))
    a=[ backitems[i][0] for i in range(0,len(backitems))]
    a.reverse()
    return a

====== 4 =======
import heapq

def sortt(d):
    backitems=d.items()
    backitems=heapq.nlargest(1000, backitems, operator.itemgetter(1))
    a=[ backitems[i][0] for i in range(0,len(backitems))]
    a.reverse()
    return a



From stargaming at gmail.com  Thu Oct 18 09:00:16 2007
From: stargaming at gmail.com (Stargaming)
Date: 18 Oct 2007 13:00:16 GMT
Subject: Noob questions about Python
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<47166b47$0$5248$426a74cc@news.free.fr>
Message-ID: <471758e0$0$8995$9b622d9e@news.freenet.de>

On Wed, 17 Oct 2007 22:05:36 +0200, Bruno Desthuilliers wrote:
[snip]
> 
> Note that there's also the reverse() function that returns a reverse
> iterator over any sequence, so you could also do:
> 
> li = list('allo')
> print ''.join(reverse(li))
> 

Note this certainly should've been `reversed()`, with a trailing 'd'.


From praddyjindal at gmail.com  Tue Oct 30 03:28:08 2007
From: praddyjindal at gmail.com (Pradeep Jindal)
Date: Tue, 30 Oct 2007 12:58:08 +0530
Subject: parse text file
In-Reply-To: <868256.95660.qm@web38415.mail.mud.yahoo.com>
References: <868256.95660.qm@web38415.mail.mud.yahoo.com>
Message-ID: <200710301258.09095.praddyjindal@gmail.com>

On Tuesday 30 Oct 2007 12:06:57 pm william paul wrote:
> Hi:
>
> I am new to this list and new to Python. I have a text file that looks
> like: <values> 4 50
> <values> 3 900
> <values] 7 400
> ...
> <values} 9 70
>
> I want to be able to remove from each line everything up to ">" or "]"
> sign. For example: 4 50
> 3 900
>  7 400
>
> ...
> 9 70
>
> How can I do this?
>
> Thank you
>
> William
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com

You can use regular expressions module like this. 

>>> import re
>>> match_upto_brackets = re.compile(r'.*[>\]}](.*)')
>>> match_upto_brackets.sub(r'\1', '<values> 4 50').strip()
'4 50'
>>> match_upto_brackets.sub(r'\1', '<values] 7 400').strip()
'7 400'
>>> match_upto_brackets.sub(r'\1', '<values} 9 70').strip()
'9 70'
>>>

Pradeep


From grey at dmiyu.org  Tue Oct 16 23:20:58 2007
From: grey at dmiyu.org (Steve Lamb)
Date: Wed, 17 Oct 2007 03:20:58 +0000 (UTC)
Subject: why doesn't have this list a "reply-to" ?
References: <471530E3.9090602@gmail.com>
	<1192587229.888.13.camel@viola.izb.knu.ac.kr>
Message-ID: <slrnfhavrs.ik5.grey@dmiyu.org>

On 2007-10-17, Byung-Hee HWANG <bh at izb.knu.ac.kr> wrote:
> Just click "Ctrl-L", then you can reply to lists directly if you use
> good mailer like mutt or thunderbird or evolution ;; 

    Thunderbird only if it has the list-reply patch, has either enigmail or
mhengy installed and has the reply-to-list addon installed.  Otherwise, no,
Thunderbird still, years later, lacks that feature.  Part of the reason why I
am test driving gmane in slrn right now.  :)

-- 
         Steve C. Lamb         | But who decides what they dream?
       PGP Key: 1FC01004       |   And dream I do...  
-------------------------------+---------------------------------------------



From bkjones at gmail.com  Fri Oct  5 11:06:38 2007
From: bkjones at gmail.com (Brian Jones)
Date: Fri, 5 Oct 2007 11:06:38 -0400
Subject: Python Magazine: Issue 1 Free!
In-Reply-To: <1191596386.885831.140290@22g2000hsm.googlegroups.com>
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<13gcjeqbhmh152c@corp.supernews.com>
	<1191596386.885831.140290@22g2000hsm.googlegroups.com>
Message-ID: <6e5927ff0710050806q3a3cd2dbn448f910022fa6ff3@mail.gmail.com>

On 10/5/07, Paul McGuire <ptmcg at austin.rr.com> wrote:
>
> On Oct 5, 9:44 am, Grant Edwards <gra... at visi.com> wrote:
> > On 2007-10-05, Steve Holden <st... at holdenweb.com> wrote:
> >
> > > I've just been told by the editors at Python Magazine that the first
> > > issue is out.
> >
> > The first issue is issue number 10?
> >
> > That's a bit silly.
> >
> > --
> > Grant Edwards                   grante             Yow! I can't decide
> which
> >                                   at               WRONG TURN to make
> first!!
> >                                visi.com            I wonder if BOB
> GUCCIONE
> >                                                    has these problems!
>
> Probably Issue 10 as in "issued in October, being the 10th month", so
> this is more of an id than it is a sequential index number.  Just like
> a social security number of 123-45-6789 does not mean you are the
> 123,456,789th human born since the beginning of the SS system.
>
> But I grant that Issue number does have some connotation of sequence
> to it, and if the next issue is something like 2 or 8, or really
> anything other than 11, now THAT would be silly.  And I'm sure that in
> the future, when people are trying to amass the complete set of Python
> Magazines, they'll wonder why those issues 1-9 of the first volume are
> so hard to come by.
>
> But I suspect that, come January, we will see the release of Vol 2,
> Issue 1.  Just an artifact of having the first issue come out in some
> month other than January.
>
> -- Paul
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

It's "Volume 1, Issue 10". A volume is a year. When January '08 is released,
it will be "Volume 2, Issue 1".

Keep the feedback coming!
brian.

-- 
Brian K. Jones
Python Magazine  http://www.pythonmagazine.com
My Blog          http://m0j0.wordpress.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071005/d8b21664/attachment.html>

From jcd at sdf.lonestar.org  Mon Oct  8 14:00:28 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Mon, 8 Oct 2007 14:00:28 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191865263.572366.270820@y42g2000hsy.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
Message-ID: <20071008180027.GD27158@sdf.lonestar.org>

On Mon, Oct 08, 2007 at 10:41:03AM -0700, mensanator at aol.com wrote regarding Re: pytz has so many timezones!:
> 
> On Oct 8, 2:32 am, Sanjay <skpate... at gmail.com> wrote:
> > Hi All,
> >
> > I am using pytz.common_timezones to populate the timezone combo box of
> > some user registration form. But as it has so many timezones (around
> > 400),
> 
> There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> +12.
> 
> A handful of countries set their clocks offset by a half hour,
> but those aren't timezones.
> 

I'm sorry.  By what even vaguely useful definition of "Timezone" is it not a timezone if it's offset by half an hour?  

> 
> The 400 you're seeing are duplications based on locality. Of the 86
> shown in Windows, all but 33 are dulplicate references to the same
> timezones.
> 
> For example, Windows has seperate listings for
> 
> Central America
> Central Time (US & Canada)
> Guadalahara, Mexico City, Monterry - New
> Guadalahara, Mexico City, Monterry - Old
> Saskatchewan
> 
> but they are all GMT-6
> 

Those are non-duplicate (and perhaps inaccurate, I'm not sure).  US time switches from standard to Daylight Savings earlier than Mexico, and switches back later, as of this year.  Reducing them to a single time zone will result in aberrant functionality in one or more locales.

Cheers,
Cliff


From kw at codebykevin.com  Mon Oct 15 09:53:40 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Mon, 15 Oct 2007 09:53:40 -0400
Subject: Cross-platform GUI development
In-Reply-To: <mailman.5.1192417321.13605.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>	<mailman.159.1192260728.927.python-list@python.org>	<as0Qi.8294$UN.1208@newsfe24.lga>	<mailman.165.1192269333.927.python-list@python.org>	<5ncb0gFhliojU2@mid.uni-berlin.de>
	<mailman.5.1192417321.13605.python-list@python.org>
Message-ID: <471370E4.6040108@codebykevin.com>

David Tremouilles wrote:
> "crappy",  "waaay better"
> I will not feed the troll...
> Pygtk on mac just do the work for me on a more than satisfying way.
> 


If that's the case, good for you. If your application is open-source, 
then perhaps it's not unreasonable to expect your users to adapt to the 
way you do things--and there are enough Unix-savvy Mac users who won't 
be put off by an X11-based app. (Heck, I use Gimp and Inkscape all the 
time!) However, if you want to develop your application commercially, 
*very* few Mac end users, even Unix-savvy ones, will pay for an 
X11-based tool. I know I've opted not to purchase WingIDE, for instance, 
because it's X11-based (PyGtk in fact) and because I can find plenty of 
Mac-native programming tools. The interface quirks of the free Gimp are 
tolerable because Photoshop is several hundred dollars, but I am not 
willing to pay a few hundred dollars for a commercial tool that has the 
same interface glitches.


Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From timaranz at gmail.com  Tue Oct  9 23:02:56 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Tue, 09 Oct 2007 20:02:56 -0700
Subject: Mixing Python and C classes in a module
In-Reply-To: <mailman.8.1191983584.927.python-list@python.org>
References: <87wstwibfl.fsf@keizer.soze.com>
	<4866bea60710090802s1ac3fde4vb3a4d17693448383@mail.gmail.com>
	<mailman.8.1191983584.927.python-list@python.org>
Message-ID: <1191985376.434309.128620@g4g2000hsf.googlegroups.com>

On Oct 10, 3:32 pm, "Nicholas Bastin" <nick.bas... at gmail.com> wrote:
> On 10/9/07, Chris Mellon <arka... at gmail.com> wrote:
>
>
>
> > On 09 Oct 2007 16:56:30 +0200, Stefan Arentz <stefan.are... at gmail.com> wrote:
>
> > > Is it possible to mix classes defined in both Python and C in the same
> > > module? Ideally I would like to be able to do:
>
> > >  from some.module import MyPythonClass, MyCClass
>
> > > I guess that would mean that this would look like this on disk:
>
> > >  some/
> > >    __init__.py
> > >    module.py      (contains MyPythonClass)
> > >    module.so      (contains MyCClass)
>
> > > But would this work?
>
> > No, you'll need to make module a package, and import from (differently
> > named) implementation packages.
>
> Nah, you can do it, just not in this way.  You can either futz with
> ihooks, or name module.py something like _module.py, import it into C,
> and then re-export as 'module', after attaching all your C types.
>
> --
> Nick

It is easier to do it the other way around.
Create module.py and _module.so and in module.py write:

from _module.so import *



From rcdailey at gmail.com  Wed Oct 10 19:01:36 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 18:01:36 -0500
Subject: How to "dereference" an iterator?
Message-ID: <496954360710101601s5cc774dby16f01ba532ef096e@mail.gmail.com>

Hi,

Suppose I wanted to manually iterate over a container, for example:

mylist = [1,2,3,4,5,6]

it = iter(mylist)
while True:
    print it
    it.next()

In the example above, the print doesn't print the VALUE that the iterator
currently represents, it prints the iterator itself. How can I get the value
'it' represents so I can either modify that value or print it? Thanks.

PS: Yes, I know that the While loop is messy and I should be prepared to
handle the StopIteration exception. However, if you guys can think of a
better alternative than the while loop I'd really appreciate it. Thanks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/83642625/attachment.html>

From thorsten at thorstenkampe.de  Thu Oct 25 06:52:30 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Thu, 25 Oct 2007 11:52:30 +0100
Subject: Test for a unicode string
References: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
Message-ID: <MPG.218a85c5c3da1a74989718@news.individual.de>

* goldtech (Wed, 24 Oct 2007 12:09:24 -0700)
> I have a regular expression test in a script. When a unicode character
> get tested in the regex it gives an error:

As Martin pointed out: you are *not* using unicode...
 
> Question: Is there a way to test a string for unicode chars (ie. test
> if a string will throw the error cited above).

There is but this is not your problem and if it was it wouldn't be the 
right solution.

Read http://www.amk.ca/python/howto/unicode. You should at least have 
a minimal understanding of unicode before trying to use unicode.
 
> Thanks, still using Python 2.1

Best way to get yourself into trouble.


Thorsten


From steve at holdenweb.com  Tue Oct  2 20:51:43 2007
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 02 Oct 2007 20:51:43 -0400
Subject: Select as dictionary...
In-Reply-To: <1191258828.206660.21570@22g2000hsm.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>	<4700fb42$0$18288$426a74cc@news.free.fr>	<mailman.1337.1191248052.2658.python-list@python.org>	<47010e97$0$7777$426a74cc@news.free.fr>	<1191258548.820547.123560@k79g2000hse.googlegroups.com>
	<1191258828.206660.21570@22g2000hsm.googlegroups.com>
Message-ID: <fdup2s$87n$2@sea.gmane.org>

Abandoned wrote:
> Also if i need a list id what can i do ?
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> 
> I want to..
> 
> idlist=[1, 2, 3] ( I don't want to use FOR and APPEND because the
> query have 2 million result and i want to speed)
> 
It may not be practical for your algorithm, but I want to point out that 
at this sort of query size it's much better (when you can) to repeatedly 
call the execution cursor's fetchmany() method repeatedly. This avoids 
having to allocate sufficient memory space to hold the whole query's output.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline



From bj_666 at gmx.net  Wed Oct 10 02:43:11 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 10 Oct 2007 06:43:11 GMT
Subject: unpickle from URL problem
References: <vSZOi.5979$rD1.4849@trnddc01>
Message-ID: <5n3ajvFfu79fU1@mid.uni-berlin.de>

On Wed, 10 Oct 2007 05:58:51 +0000, Alan Isaac wrote:

> I am on a Windows box.
> 
> I pickle a tuple of 2 simple objects with the pickle module.
> It pickles fine.  It unpickles fine.
> 
> I upload to a server.
> I try to unpickle from the URL.  No luck.  Try it:
> x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example1'))
> 
> I change the filetype to unix.  I upload again.
> I try to unpickle from the URL.  Now it works.  Try it:
> x1, x2 = pickle.load(urllib.urlopen('http://www.american.edu/econ/notes/hw/example2'))
> 
> Why the difference?

Pickles are *binary* files, not text files, so make sure you always treat
them as binary, e.g. opening the files with mode 'rb' and 'wb' and don't
transmit them in text mode over FTP etc.

Ciao,
	Marc 'BlackJack' Rintsch


From kw at codebykevin.com  Fri Oct 12 12:18:19 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Fri, 12 Oct 2007 12:18:19 -0400
Subject: Cross-platform GUI development
In-Reply-To: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
Message-ID: <470F9E4B.4080805@codebykevin.com>

psaffrey at googlemail.com wrote:

> 
> My question is if Tix is old hat, what is the GUI toolkit I *should*
> be using for quick-n-dirty cross platform GUI development? I guess
> this is tangentially related to:

What widgets are you using in Tix? They may be available in BWidgets, 
Tablelist, or other script-level Tk exetensions (i.e. they do not 
require compiliaton). Wrappers for many of these are available at the 
Tkinter wiki (http://tkinter.unpythonic.net/wiki/FrontPage)

--Kevin

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From giles_brown at hotmail.com  Wed Oct  3 07:28:19 2007
From: giles_brown at hotmail.com (Giles Brown)
Date: Wed, 03 Oct 2007 04:28:19 -0700
Subject: interfacing Python interpreter with a VB6 frontend
In-Reply-To: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>
References: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>
Message-ID: <1191410899.422445.260410@o80g2000hse.googlegroups.com>

On 3 Oct, 11:07, Anonymous <no.re... at here.com> wrote:
> I am trying something which appears (so far), that many other people
> have not yet tried before - since I can't find any useful related
> material despite several days of searching various sites/blogs etc.
>
> I want to use VB6 as a front end for building a small GUI console that
> accepts python commands at the command line and executes them, returning
> any results to the VB6 window.
>
> This requires several steps, but the one I am having most problem
> finding info on is the ff:
>
> 1. using/interacting the Python interpreter from VB6
>
> Any pointers/demos etc are very welcome - and if this has already been
> done, please let me know, so I can learn from what someone else has done

http://www.oreilly.com/catalog/pythonwin32/chapter/ch12.html



From researchbase at gmail.com  Sat Oct 27 16:16:11 2007
From: researchbase at gmail.com (krishnakant Mane)
Date: Sun, 28 Oct 2007 01:46:11 +0530
Subject: how to creating html files with python
In-Reply-To: <1193504578.745710.166190@k35g2000prh.googlegroups.com>
References: <mailman.511.1193501565.13605.python-list@python.org>
	<1193504578.745710.166190@k35g2000prh.googlegroups.com>
Message-ID: <f81479dd0710271316l5edd0c69q8838ad24e66e68d9@mail.gmail.com>

hi George,

On 27/10/2007, George Sakkis <george.sakkis at gmail.com> wrote:
> On Oct 27, 12:12 pm, "krishnakant Mane" <researchb... at gmail.com>
> wrote:
>
> > I have one strange requirement,
> > I need to create html files through python and add some data from the
> database.
>
> The only strange thing here is that you think this is a strange
> requirement :) This is quite typical, and practically required for web
> development. As Diez pointed out, your main problem will be which of
> the dozen or so template packages to pick. Depending on your criteria
I am finding it difficult to choose.
my only requirement is to create an htmo file with normal html taggs
but the values come from a database connection.
so I want to get rid of doing the entire concatination right from
start till end.  I don't mind opening a file and doing file.write()
but it will be nice of some module to help me get the data
concatinated with taggs and rather even better if I can do complex
things like creating an html table whos rows contain data coming from
a result set.
here I would like to have the tagging more like functions, some thing
like report.bold("this must be bold ") and this function to return a
line with the bolded html which looks in the file as <b> this must be
bold </b>
so instead of I doing the concatination myself, python makes it easy.
and I will have lot of complex tables etc to do like this.
so please help me choose one.
regards,
Krishnakant.


From grante at visi.com  Fri Oct  5 10:40:35 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 05 Oct 2007 14:40:35 -0000
Subject: Program with wx in Linux and Windows
References: <fe2ii3$4ac$1@aioe.org>
Message-ID: <13gcj73cocev2e0@corp.supernews.com>

On 2007-10-04, marcpp <marcpp at gmail.com> wrote:

> Hi I've developed a program (WXpython GUI). In Linux the GUI is correct 
> (various distributions), but in Windows all appears disordered.
> Any recomendations?

I've been using wxPython for cross platofrm stuff on Linux and
Windows for 5+ years now for at least a dozen programs. I never
had any problems like the one you describe (though "appears
disordered" isn't much of a problem description).  I write/test
on Linux, and the programs pretty much "just work" on Windows.

I would guess your code is wrong it a way that happens to be
tolerated better under Linux than Windows for some reason.  If
you can come up with a minimal example program that
demonstrates the problem, the people on the wxPython mailing
list will almost certainly be able to tell you what you've done
wrong.

-- 
Grant Edwards                   grante             Yow! Spreading peanut
                                  at               butter reminds me of
                               visi.com            opera!!  I wonder why?


From martin at marcher.name  Wed Oct 31 10:21:59 2007
From: martin at marcher.name (Martin Marcher)
Date: Wed, 31 Oct 2007 15:21:59 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <loom.20071031T132748-928@post.gmane.org>
References: <loom.20071031T132748-928@post.gmane.org>
Message-ID: <5fa6c12e0710310721m3452386ucbc3c9513257a80e@mail.gmail.com>

2007/10/31, jelle <jelleferinga at gmail.com>:
> the subject pretty much says it all.
> if I check a string for for a substring, and this substring isn't found,
> should't the .find method return 0 rather than -1?
> this breaks the

IMHO "0" would mean the substring starts at index 0 of the iterable.

If that changes it should return "None" in python instead of a int anyway, no?

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From kadeko at gmail.com  Mon Oct 15 06:10:10 2007
From: kadeko at gmail.com (looping)
Date: Mon, 15 Oct 2007 03:10:10 -0700
Subject: Twisted (or for loops ?) madness
In-Reply-To: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
References: <1192434369.994950.33940@v29g2000prd.googlegroups.com>
Message-ID: <1192443010.957983.81970@q3g2000prf.googlegroups.com>

On Oct 15, 9:46 am, looping <kad... at gmail.com> wrote:
> l = [ct1, ct2, ct3]
> for c in l:
>     d.addCallback(lambda result: c.compile())
>
> reactor.callLater(20, reactor.stop)
> reactor.run()
>
> Output:
>
> Compile : *OBJECT 1*
> <__main__.CompilerThread object at 0x00BAD030>
> Start : *OBJECT 1*
> Compiler result : *OBJECT 1* *OBJECT 1*
> Compile : *OBJECT 3*
> <__main__.CompilerThread object at 0x00CD9470>
> Start : *OBJECT 3*
> Compiler result : *OBJECT 3* *OBJECT 3*
> Compile : *OBJECT 3*
> <__main__.CompilerThread object at 0x00CD9470>
> Start : *OBJECT 3*
> Compiler result : *OBJECT 3* *OBJECT 3*
>
> OBJECT 3 run 2 times and OBJECT 2 never ?!?
>
> Any idea ? Maybe something related to Threads ?
> Thanks for your help.

After further tests, it look like it is the lambda that cause the
problem:
-Adding a parameter result to compile(self, result)
-Changing d.addCallback(lambda result: c.compile()) for
d.addCallback(c.compile)

And everything run fine.

Why lambda doesn't work ? (variable scope problem ?)



From goldtech at worldpost.com  Mon Oct  8 09:51:18 2007
From: goldtech at worldpost.com (goldtech)
Date: Mon, 08 Oct 2007 13:51:18 -0000
Subject: How to create a file on users XP desktop
In-Reply-To: <mailman.1648.1191778298.2658.python-list@python.org>
References: <1191727914.018474.172950@g4g2000hsf.googlegroups.com>
	<1191735169.441525.106060@o80g2000hse.googlegroups.com>
	<4708CAF4.7020206@bigfoot.com> <47090D86.5080805@tim.thechases.com>
	<mailman.1648.1191778298.2658.python-list@python.org>
Message-ID: <1191851478.953952.36480@o3g2000hsb.googlegroups.com>


> from win32com.shell import shell, shellcon
>
> desktop = shell.SHGetFolderPath (0, shellcon.CSIDL_DESKTOP, 0, 0)
>
> </code>
>

I have a general problem with using win32com. It's the documentation.
I never know what is available, what classes, methods, what they do.
Even some of the existing documentation admits existing documentation
is scant e.g. "you're just expected to know".

Other than the O'Reilly book. People say to browse COM with PythonWin.
When I try this I'm confronted with a dizzying array, there's tons of
stuff in there. Where's  win32com? If I find it will there be a
synopsis on each class, each classes methods? Will there be usage
examples?

If I'm wrong please educate me.



From fuzzyman at gmail.com  Tue Oct 30 06:52:11 2007
From: fuzzyman at gmail.com (Fuzzyman)
Date: Tue, 30 Oct 2007 10:52:11 -0000
Subject: Automatic Generation of Python Class Files
In-Reply-To: <YYKdnQPGBbas87vanZ2dnUVZ_jmdnZ2d@comcast.com>
References: <1193073156.493809.184110@z24g2000prh.googlegroups.com>
	<mailman.335.1193073967.13605.python-list@python.org>
	<1193076352.576143.123260@z24g2000prh.googlegroups.com>
	<ZJidnWJa8fykcoHanZ2dnUVZ_sqinZ2d@comcast.com>
	<1193691850.854354.301970@d55g2000hsg.googlegroups.com>
	<YYKdnQPGBbas87vanZ2dnUVZ_jmdnZ2d@comcast.com>
Message-ID: <1193741531.543178.175900@o80g2000hse.googlegroups.com>

On Oct 29, 11:35 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> Fuzzyman wrote:
> > On Oct 22, 6:43 pm, Steven Bethard <steven.beth... at gmail.com> wrote:
> >> # Inherit from object. There's no reason to create old-style classes.
>
> > We recently had to change an object pipeline from new style classes to
> > old style. A lot of these objects were being created and the *extra
> > overhead* of new style classes was killing us. :-)
>
> I'm curious.  Was it memory or speed overhead that was the problem?


It was speed overhead - I have to add a disclaimer that this is
IronPython, but my understanding is that the situation is similar with
CPython. Creating new style class instances is slower than for old
style classes.

This was in the execution of spreadsheets, where we had a pipeline of
three objects for each spreadsheet element (not sure if the
implementation is still the same now).

Michael
http://www.manning.com/foord


>
> Steve




From lasses_weil at klapptsowieso.net  Tue Oct  2 14:11:48 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Tue, 02 Oct 2007 20:11:48 +0200
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <uk5q5dey6.fsf@cybuild.com>
References: <1182093200.598418.218620@e9g2000prf.googlegroups.com>
	<1182272495.990807.99110@a26g2000pre.googlegroups.com>
	<87tzt3ihev.fsf@kobe.laptop> <m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<pmnLi.1684$hP.1048@newsfe12.lga> <87lkao8xgk.fsf@web.de>
	<uk5q5dey6.fsf@cybuild.com>
Message-ID: <470289e4$0$4524$9b4e6d93@newsspool3.arcor-online.net>

Kamen TOMOV wrote:
> On Sun, Sep 30 2007, Klaus Schilling wrote:
> 
>> ...
>> private property is unethical
> 
> How I craved to read that!
> 
> Viva la revolution! 
> 
> ??? ??????? - ??? ???????,
> ??? ??????? - ??? ???????!
> 
> The End justify the means!
> 
> Long live communism! 
> 
ENDUT! HOCH HECH!
- ?????? ???????, ???? ??. ??q???

/W


From ed at leafe.com  Fri Oct 26 14:17:20 2007
From: ed at leafe.com (Ed Leafe)
Date: Fri, 26 Oct 2007 14:17:20 -0400
Subject: [ANN] Dabo 0.8.2 Released
In-Reply-To: <13i48kmok4jdt54@corp.supernews.com>
References: <mailman.479.1193413960.13605.python-list@python.org>
	<13i48kmok4jdt54@corp.supernews.com>
Message-ID: <3125AA5C-CCD3-4D77-BE27-33B481A6A50B@leafe.com>

On Oct 26, 2007, at 1:23 PM, Dennis Lee Bieber wrote:

>> 	We are also including DaboDemo and the visual tools in the download,
>> instead of making you grab those separately. We plan on integrating
>> Web Update-like features into these in the near future.
>>
> 	Let's see if I have this right before doing an "empty trash"... I
> can delete the directory I had for "stable" (containing three
> TortoiseSVN enabled subdirectories: Dabo, DaboIDE, DaboDemo), along  
> with
> the DaboIDE and DaboDemo subdirectories I had under "dev"...

	That's right. The 'stable' branches are still available in  
Subversion, but only read-only. No changes will be made to these from  
now on.

	You can continue to use Subversion if you wish, but note that the  
URLs have changed, since the framework, demo and visual tools are all  
in the same trunk:

  svn checkout http://svn.dabodev.com/dabo/trunk/dabo
  svn checkout http://svn.dabodev.com/dabo/trunk/ide
  svn checkout http://svn.dabodev.com/dabo/trunk/demo


-- Ed Leafe
-- http://leafe.com
-- http://dabodev.com




From lcapps at cteresource.org  Wed Oct 31 11:44:14 2007
From: lcapps at cteresource.org (Lee Capps)
Date: Wed, 31 Oct 2007 11:44:14 -0400
Subject: capturing output of command line in an array
In-Reply-To: <1193842906.058058.29080@t8g2000prg.googlegroups.com>
References: <1193842906.058058.29080@t8g2000prg.googlegroups.com>
Message-ID: <A4C1914D-3A55-4AB3-9E50-3A1283C712FB@cteresource.org>


On Oct 31, 2007, at 11:01 AM, amjadcsu at gmail.com wrote:

> I am trying to execute a command using os.system. this command lists
> the number of nodes alive in a cluster. I would like to capture the
> output in list/array in python. IS it possible.?/
>
> Here is my command
>  gstat -a
> node13     2 (    0/   56) [  0.00,  0.00,  0.00] [   0.0,   0.0,
> 0.1,  99.9,   0.0] OFF
> node12     2 (    1/   63) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> 3.7,  49.8,   0.0] OFF
> node8     2 (    1/   59) [  0.99,  0.97,  0.91] [  47.5,   0.0,
> 2.8,  49.7,   0.0] OFF
> node2     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> 3.7,  49.7,   0.0] OFF
> node1     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> 3.7,  49.7,   0.0] OFF
> node7     2 (    1/   58) [  0.99,  0.97,  0.91] [  49.8,   0.0,
> 0.6,  49.7,   0.0] OFF
> node11     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
> 3.8,  49.6,   0.0] OFF
> node4     2 (    1/   59) [  1.00,  1.00,  0.93] [  46.6,   0.0,
> 3.7,  49.7,   0.0] OFF
> node10     2 (    1/   59) [  1.00,  1.00,  0.94] [  46.7,   0.0,
> 3.7,  49.7,   0.0] OFF
> node5     2 (    1/   59) [  1.00,  1.00,  0.92] [  49.8,   0.0,
> 0.4,  49.7,   0.0] OFF
> node6     2 (    1/   59) [  1.00,  1.00,  0.94] [  49.5,   0.0,
> 0.9,  49.7,   0.0] OFF
>
> I would like to have an array where each element contains the nodes
>
> for example
> a=[node13,node12,node2,node8,node1,node7,node 11]
>
> any help would be appreciated
>

You might try os.popen to read in the output of your command.

It would be helpful to have more information about what you'd like to  
do with your list.  Do you just want to put the text of the  
individual node lines from gstat into the list?  If so, os.popen  
should work for you.  Or  do you need to parse the lines and store  
them in, say dictionaries?  Tuples?  If you need to parse it, you  
could use module re, or even just string methods, depending on what  
you're trying to do . . . .

HTH,

---
Lee Capps
Technology Specialist
CTE Resource Center
lcapps at cteresource.org





From bdesth.quelquechose at free.quelquepart.fr  Sat Oct 13 16:21:31 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 13 Oct 2007 22:21:31 +0200
Subject: Declarative properties
In-Reply-To: <470f7dca$0$8814$9b622d9e@news.freenet.de>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>	<5n6j5nFghr61U4@mid.uni-berlin.de>	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>	<470e5606$0$29825$426a34cc@news.free.fr>
	<470f7dca$0$8814$9b622d9e@news.freenet.de>
Message-ID: <471128f3$0$26672$426a74cc@news.free.fr>

Stargaming a ?crit :
> On Thu, 11 Oct 2007 18:58:44 +0200, Bruno Desthuilliers wrote:
> [snip]
> 
> Your implementation seems particularly broken. You do not return anything 
> from `name()`, 

Oops, my bad ! Indeed, I forgot the 'return property(**locals())' at the 
end. And a couple other things too:

> I'm going to point out a few other mistakes first:
> 
(snip other corrections)

I'll call you when I'll have code to fix - you're doing a good job !-)


From steve at holdenweb.com  Sat Oct 20 21:04:06 2007
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 20 Oct 2007 21:04:06 -0400
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
In-Reply-To: <1192887425.21842.3.camel@viola.izb.knu.ac.kr>
References: <1192680926.420317.16630@v29g2000prd.googlegroups.com>	
	<1192779973.14981.36.camel@viola.izb.knu.ac.kr>	
	<4719F4FB.7020508@holdenweb.com>
	<1192887425.21842.3.camel@viola.izb.knu.ac.kr>
Message-ID: <471AA586.1070406@holdenweb.com>

Byung-Hee HWANG wrote:
> Steve,
> 
> On Sat, 2007-10-20 at 08:30 -0400, Steve Holden wrote:
>> Byung-Hee HWANG wrote:
>> [... whole article quoted ...]
>>> +1 ;;
>>> BTW, what is G2/1.0? Is that Emacs-like editor?
>>>
>> I can't tell you that, but I do know that someone who quotes a whole 
>> lengthy article like that just to ask a simple question isn't being very 
>> considerate of their readers.
> 
> You're the only guy who has read the my comment. Thanks!
> 
Try asking again without the lengthy quote!

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it


From python at rcn.com  Mon Oct 29 19:12:52 2007
From: python at rcn.com (Raymond Hettinger)
Date: Mon, 29 Oct 2007 16:12:52 -0700
Subject: "and" and "or" on every item in a list
In-Reply-To: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
References: <1193698678.288593.314870@k79g2000hse.googlegroups.com>
Message-ID: <1193699572.533791.97660@q3g2000prf.googlegroups.com>

On Oct 29, 3:57 pm, GHZ <geraint.willi... at gmail.com> wrote:
> Is this the best way to test every item in a list?
>
> def alltrue(f,l):
>     return reduce(bool.__and__,map(f,l))
>
> def onetrue(f,l):
>     return reduce(bool.__or__,map(f,l))
>
>
>
> >>> alltrue(lambda x:x>1,[1,2,3])
> False
>
> >>> alltrue(lambda x:x>=1,[1,2,3])
> True

In Py2.5, you can use the builtin any() and all() functions.

In Py2.4, use the recipes from the itertools module:

def all(seq, pred=None):
    "Returns True if pred(x) is true for every element in the
iterable"
    for elem in ifilterfalse(pred, seq):
        return False
    return True

def any(seq, pred=None):
    "Returns True if pred(x) is true for at least one element in the
iterable"
    for elem in ifilter(pred, seq):
        return True
    return False

def no(seq, pred=None):
    "Returns True if pred(x) is false for every element in the
iterable"
    for elem in ifilter(pred, seq):
        return False
    return True


Raymond



From torriem at chem.byu.edu  Wed Oct 10 22:44:10 2007
From: torriem at chem.byu.edu (Michael L Torrie)
Date: Wed, 10 Oct 2007 20:44:10 -0600
Subject: if then elif
In-Reply-To: <470D8D92.4040902@chem.byu.edu>
References: <mailman.42.1192048768.927.python-list@python.org>	<Np-dnQWN1YuQo5DanZ2dnUVZ_tajnZ2d@comcast.com>	<1192055029.856930.19230@r29g2000hsg.googlegroups.com>
	<470D8D92.4040902@chem.byu.edu>
Message-ID: <470D8DFA.5010902@chem.byu.edu>

Michael L Torrie wrote:
> Which is exactly what he said.  

Haha.  Nevermind.  You're right.  A subtle distinction, isn't it.

>He also said that what the poster
> probably wanted was
> 
> if cal <= 0 or fat <=0
> 
> 



From info at thegrantinstitute.com  Wed Oct 24 22:25:35 2007
From: info at thegrantinstitute.com (Anthony Jones)
Date: 24 Oct 2007 19:25:35 -0700
Subject: Professional Grant Proposal Writing Workshop (December 2007: Seattle,
	Washington)
Message-ID: <20071024192534.E84BDD54DC142D33@thegrantinstitute.com>

An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071024/c74be824/attachment.html>

From sandip.more at gmail.com  Tue Oct 30 00:50:27 2007
From: sandip.more at gmail.com (sandipm)
Date: Mon, 29 Oct 2007 21:50:27 -0700
Subject: How to find if a string contains another string
In-Reply-To: <mailman.625.1193717837.13605.python-list@python.org>
References: <mailman.625.1193717837.13605.python-list@python.org>
Message-ID: <1193719827.724663.43810@e34g2000pro.googlegroups.com>


you can use "find" function...which gives index of occurrence of
smaller one in bigger one
and return -1 if does not exists..


if bigstring.find(smallone) > -1:
    return true
else:
    return false


sandip




On Oct 30, 9:15 am, "Borse, Ganesh" <ganesh.bo... at credit-suisse.com>
wrote:
> Sorry, am getting this error.
>
> >>> bigstring="python anaconda boa cobra"
> >>> smallone="boa"
> >>> smallone in bigstring
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: 'in <string>' requires character as left operand
>
> >>> if smallone in bigstring:
>
> ...    print 'ok'
> ... else:
> ...     print 'nok'
> ...
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: 'in <string>' requires character as left operand
>
> Do I need to import any module?
>
> Thanks,
> Ganesh
>
> -----Original Message-----
> From: Gary Herron [mailto:gher... at islandtraining.com]
> Sent: 30 October 2007 12:09
> To: Borse, Ganesh
> Cc: python-l... at python.org
> Subject: Re: How to find if a string contains another string
>
> Borse, Ganesh wrote:
> > Hi,
>
> > Am new to python.
> > May someone please help me know this?
>
> > How can we check whether one big string contains another small string?
>
> > E.g.
> > bigstring="python anaconda boa cobra"
> > smallone="boa"
>
> Use the operator named in:
>
> >>> bigstring="python anaconda boa cobra"
> >>> smallone="boa"
> >>> smallone in bigstring
> True
>
> Often used in if statements like this:
>
> >>> if smallone in bigstring:
> ...   print 'contained'
> ... else:
> ...   print 'not'
> ...
> contained
>
> Gary Herron
>
> > If 0 == contains(bigstring,smallone):
> >         print "Yes, boa is snake.."
>
> > Is there any function like "contains" or "exists" in python?
> > What are different alternatives we have?
>
> > Please help.
>
> > Thanks and Regards,
> > Ganesh
>
> > ======================================================================
> > ======== Please access the attached hyperlink for an important
> > electronic communications disclaimer:
>
> >http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
> > ======================================================================
> > ========
>
> ===========================================================================?===
> Please access the attached hyperlink for an important electronic communications disclaimer:
>
> http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
> ===========================================================================?===




From aleax at mac.com  Sun Oct 14 12:09:34 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 14 Oct 2007 09:09:34 -0700
Subject: Python on imac
References: <8ocQi.24253$054.21605@newsfe14.phx>
	<fes99k$o4$1@daisy.noc.ucla.edu>
Message-ID: <1i5yujj.1kardau10904n1N%aleax@mac.com>

James Stroud <jstroud at mbi.ucla.edu> wrote:
   ...
> For OS X 10.4, wx has come as part of the stock python install. You may

I use Mac OSX 10.4 and this assertion seems unfounded -- I can't see any
wx as part of the stock Python (2.3.5).  Maybe you mean something else?


Alex


From bcd at pvv.ntnu.no  Wed Oct  3 05:23:48 2007
From: bcd at pvv.ntnu.no (Bent C Dalager)
Date: Wed, 3 Oct 2007 09:23:48 +0000 (UTC)
Subject: The Modernization of Emacs: terminology buffer and keybinding
References: <13frd6vtarbee75@corp.supernews.com>
	<fdlat6$c5f$03$1@news.t-online.com>
	<47016899$0$4524$9b4e6d93@newsspool3.arcor-online.net>
	<fdtsfu$iq6$03$1@news.t-online.com>
Message-ID: <fdvn34$odf$1@orkan.itea.ntnu.no>

In article <fdtsfu$iq6$03$1 at news.t-online.com>,
Frank Goenninger  <frgo at goenninger.net> wrote:
>
>Well, I didn't start the discussion. So you should ask the OP about the 
>why. I jumped in when I came across the so often mentioned "hey, it's 
>all well defined" statement was brought in. I simply said that if that 
>"well-definedness" is against "common understanding" then I don't give 
>a damn about that clever definitions. Because I have to know that there 
>are such definitions - always also knowing that free is not really 
>free.

"Liberated" is a valid meaning of the word "free". The main problem is
that there aren't really any other words in the English language that
have the same meaning as the word "free" when it is wearing its
"liberated" hat. It is unfortunate that the word is overloaded with
multiple other meanings, one of which is so central in our modern
market oriented society that it tends to come to the forefront of
people's minds when the word is used. But that's just the way it is.
You work with the language you've got.

> It is such a good subject to discuss over and over and over 
>without ever reaching any conclusion or resolution because neither FSF 
>nor GNU nor the FREE as in FREE BEER defenders will change their mind. 

I am quite sure they would be overjoyed if someone were to come up
with a decent replacement for the word "free" so as to disambiguate
the term. A number of people have tried pretty hard, however, and
failed. If you fancy yourself an accomplished wordsmith, any
suggestions are sure to be welcome.

Cheers
	Bent D
-- 
Bent Dalager - bcd at pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs


From sami.jan at gmail.com  Sat Oct 20 18:21:52 2007
From: sami.jan at gmail.com (sami)
Date: Sat, 20 Oct 2007 22:21:52 -0000
Subject: using "request" variable in python web program
Message-ID: <1192918912.870199.297540@v29g2000prd.googlegroups.com>

Hi

I am trying to write a facebook application in python - I have been
programming simple desktop applications till now and am not really
familiar with web apps

Pyfacebook is the wrapper for the REST based Facebook API - there is a
simple example for its usage as shown below:

def simple_web_app(request, api_key, secret_key):
    fb = Facebook(api_key, secret_key, request.GET['auth_token'])
    fb.auth_getSession()

A Django-based tutorial and source is available here:
http://wiki.developers.facebook.com/index.php/PythonPyFacebookTutorial

I really don't want to use a framework for the time being and just
want an app up and running

My question is - how do you create the "request" object which will be
passed into the simple_web_app(request, api_key, secret_key) function
here - is there somewhere I can read into it?

I have been googling for hours and there seems to be no simple,
straightforward example for this - PHP rules when it comes to simple
web programming apps - either I am not looking at the right places but
it's very hard to get up and running quickly for web apps in Python -
maybe DiveIntoPython needs a section devoted for web programming



From smithken04 at yahoo.com  Sun Oct 21 17:17:26 2007
From: smithken04 at yahoo.com (smithken04 at yahoo.com)
Date: Sun, 21 Oct 2007 14:17:26 -0700
Subject: parallel NumPy: PyMPI, myMPI or something else?
Message-ID: <1193001446.939761.122290@t8g2000prg.googlegroups.com>

Hi!

I am trying to find my way to a running parallel NumPy installation.
Can you help me getting started wihtout losing my way several times?

PyMPI and myMPI are apperently not too actively developed. Is this
true? Are they mature enough so that they don't need any more updates?
Have they been replaced by more recent modules?

Then, if I have NumPy running with PyMPI or whatever, is NumPy already
optimized for a MPI environment so that for example matrix
multiplication, iterative solvers etc. are automatically distributed?
Or do I have to split each problem myself to make use of the
parallelism?

Thank you
Ken



From anuraguniyal at gmail.com  Wed Oct 10 01:33:24 2007
From: anuraguniyal at gmail.com (Anurag)
Date: Tue, 09 Oct 2007 22:33:24 -0700
Subject: tarfile...bug?
In-Reply-To: <1191933951.458411.285300@r29g2000hsg.googlegroups.com>
References: <1191933951.458411.285300@r29g2000hsg.googlegroups.com>
Message-ID: <1191994404.182743.112680@50g2000hsm.googlegroups.com>

Hi,

Have any one faced such problem, I assume it must be common if it can
be replicated so easily , or something wrong with my system

Also if I use tar.members instead of tar.getmembers() it works
so what is the diff. between tar.members and tar.getmembers()

rgds
Anurag



From beema.shafreen at gmail.com  Mon Oct 29 11:32:30 2007
From: beema.shafreen at gmail.com (Beema shafreen)
Date: Mon, 29 Oct 2007 21:02:30 +0530
Subject: two file into a single file
Message-ID: <aa405c1f0710290832n51ee019v67fa72eea158c45c@mail.gmail.com>

hi everybody,
               I have a two file,
 file 1:
100007097
100007186
10000723
100007895
100007906
100008295
100008311
10000880
100009160
100009629

file 2:
100007097
100007186
10000723
100007895
100007906
100008295
100008311
10000880
100009160
100009629
how do i make into a single file......like this
file 1             file 2
100007097  100007097
100007186  100007097
100007186   10000880
10000723    100007895
100007895  100007895
100007906  100007895
100008295  00008311
100008311  1000088
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071029/31254667/attachment.html>

From tnelson at onresolve.com  Mon Oct 22 03:31:07 2007
From: tnelson at onresolve.com (Trent Nelson)
Date: Mon, 22 Oct 2007 09:31:07 +0200
Subject: a question about decorator
In-Reply-To: <003b01c81476$0b8dd4c0$811ba8c0@kyom>
References: <003b01c81476$0b8dd4c0$811ba8c0@kyom>
Message-ID: <AB1BB4CF81B9214682079EB55A7125ED02552D57@mapibe05.exchange.xchg>

> def A():
> 	print 'warp in A'
> 	def why(self, *arg, **kw):
> 		print 'in A'
> 		print self
> 		print arg
> 		print kw
> 		#self(*arg, **kw)
> 
> 	return why
> 
> class T(object):
> 	@A()
> 	def test(g, out):
> 		print 'in test', out
> 
> it will out put:
> 
> warp in A
> in A
> <function test at 0x00BF0C70>
> ()
> {}
> 


> the function why will be called, why? there is no code to call it.

When Python first parses your code, every time it runs into '@A', it
calls A() in order to get the required decorator function.  A needs to
return a function object that accepts a single parameter (the function
we're decorating), and returns another function object that does the
actual work.  So, what you need is an extra level of inline functions:

def A(*args, **kwds):
    # You can access the arguments passed to the decorator
    # here, e.g. if we were called as @A('foo', timeout=10),
    # args[0] would be 'foo', and kwds['timeout'] would be
    # 10.  *args and **kwds are also accessible in the actual
    # decorator 'body' _fn() below.  This allows you to alter
    # the behaviour of the decorator based on the types that
    # have been passed to it.
    def _decorator(f):
        # A decorator must always return a function object that
        # takes a single parameter, which will be the function
        # we're wrapping when we're actually invoked.  That's
        # the purpose of _decorator(f).
        def _fn(*_args, **_kwds):
            # And here's where we define the actual decorator
            # functionality, three levels deep.  *_args and
            # **_kwds will represent the parameters passed to
            # the actual function we're wrapping; i.e. in our
            # case, _args[0] will always be self if we're
            # decorating a class's instance method, and _args[1]
            # will be either 'foo' or 'bar'.
            self = _args[0]
            name = self.__class__.__name__
            print 'in A (calling class: %s)' % name
            # The last responsibility of this method is to
            # call the actual function we're wrapping. 
            f(*_args, **_kwds)
        return _fn
    return _decorator

class T(object):
    @A()
    def test(self, out):
        print 'in test T', out

class S(object):
    @A()
    def test(self, out):
        print 'in test S', out

if __name__ == '__main__':
        t = T()
        t.test('foo')
        s = S()
        s.test('bar')

% python t.py
in A (calling class: T)
in test T foo
in A (calling class: S)
in test S bar


Regards,

	Trent.


From paul at boddie.org.uk  Tue Oct 23 09:39:41 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Tue, 23 Oct 2007 06:39:41 -0700
Subject: Cross-compiling porting of io.h, distutils compilator argument
In-Reply-To: <1193145659.546620.44060@q3g2000prf.googlegroups.com>
References: <1193145659.546620.44060@q3g2000prf.googlegroups.com>
Message-ID: <1193146781.666415.14690@z24g2000prh.googlegroups.com>

On 23 Okt, 15:20, Otacon22 <otaco... at email.it> wrote:
>
> If someone know how i can also directly use the gcc cross-compilator
> to build the module, without using distutils, but i need also to know
> when i compile it, then howto use on python as library.

I think that this bug/patch is the most promising for cross-compiling
Python, although I'm not sure if it meets your requirements exactly:

http://bugs.python.org/issue1597850

Perhaps Python 2.6 will get improved cross-compilation support with
this patch applied.

Meanwhile, the following patch says this about distutils: "Although
scons doesn't support cross-builds either, it at least doesn't prevent
them."

http://bugs.python.org/issue841454

I know of patches which support cross-compilation using cmake as well,
although I don't see the core developers embracing things like SCons
or cmake in preference to distutils, regardless of any lack of support
distutils might have in this area.

Paul



From gandalf at shopzeus.com  Wed Oct  3 15:11:55 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Wed, 03 Oct 2007 21:11:55 +0200
Subject: gdbm objects not iterable?
In-Reply-To: <4703BDB7.5080005@holdenweb.com>
References: <47039B0B.7080301@shopzeus.com>
	<fe07ph$6a0$1@sea.gmane.org>	<4703A9CE.3030608@shopzeus.com>
	<4703ACCF.3000301@holdenweb.com>	<4703BAD4.6020409@shopzeus.com>
	<4703BDB7.5080005@holdenweb.com>
Message-ID: <4703E97B.4000800@shopzeus.com>


>> E.g. I would not allow to change the keys of the gdbm object during 
>> iteration. I'm not sure how to detect "end of iteration" though.
>>
>> (Maybe I misunderstood your question.)
>>
>>     
> All I meant was that it's essential to trap this condition.
>   
Dictionary size change is easy to detect between two iterations. 
Detecting key changes is more difficult but not hard (with a "last 
modified" timestamp/counter maybe?).

These would not work when there are multiple threads iterating over the 
same gdbm object. I believe I should not do this without locking. (How 
it is implemented in Python with dicts? What happens if I iterate 
through a dict in one thread, and modify it from another thread?)

I'm just glad that my idea was not rejected instantly. :-)

  Laszlo



From bignose+hates-spam at benfinney.id.au  Thu Oct 18 01:20:08 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 18 Oct 2007 15:20:08 +1000
Subject: Elisp Tutorial: HTML Syntax Coloring Code Block
References: <1192680926.420317.16630@v29g2000prd.googlegroups.com>
Message-ID: <87r6jtyp6f.fsf@benfinney.id.au>

Xah Lee <xah at xahlee.org> writes:

> Elisp Tutorial: HTML Syntax Coloring Code Block

Utterly irrelevant to most of the groups in the Newsgroups field.

Followups set to comp.lang.lisp and comp.emacs only, please.

-- 
 \     "[The RIAA] have the patience to keep stomping. They're playing |
  `\      whack-a-mole with an infinite supply of tokens."  -- kennon, |
_o__)                                             http://kuro5hin.org/ |
Ben Finney


From george.sakkis at gmail.com  Wed Oct 31 23:27:17 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Thu, 01 Nov 2007 03:27:17 -0000
Subject: XML DOM, but in chunks
In-Reply-To: <5os7n8Fo3gssU6@mid.uni-berlin.de>
References: <1193862283.829628.122480@k79g2000hse.googlegroups.com>
	<5os7n8Fo3gssU6@mid.uni-berlin.de>
Message-ID: <1193887637.203162.255280@i38g2000prf.googlegroups.com>

On Oct 31, 4:43 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Wed, 31 Oct 2007 20:24:43 +0000, Sean Davis wrote:
> > I have some very large XML files that are basically recordsets.  I
> > would like to access each record, one-at-a-time, and I particularly
> > like the ElementTree library for accessing the data.  Is there a way
> > to have ElementTree read only one record of the data at a time?
>
> Have you tried `iterparse()`?
>
> Ciao,
>         Marc 'BlackJack' Rintsch

Detailed docs at http://effbot.org/zone/element-iterparse.htm

George



From byte8bits at gmail.com  Tue Oct  2 10:49:57 2007
From: byte8bits at gmail.com (brad)
Date: Tue, 02 Oct 2007 10:49:57 -0400
Subject: Dictionary invalid token error
Message-ID: <fdtlqo$t1t$1@solaris.cc.vt.edu>

This works:

 >>> area_group = {001:06, 002:04, 003:04, 006:9}

This does not (one the end, 09 is used instead of 9)

 >>> area_group = {001:06, 002:04, 003:04, 006:09}
   File "<stdin>", line 1
     area_group = {001:06, 002:04, 003:04, 006:09}
SyntaxError: invalid token

Why does 09 cause an invalid token while 9 does not?

###############################################

Python 2.4.4 (#2, Apr  5 2007, 18:43:10)
[GCC 4.1.2 20061115 (prerelease) (Debian AMD64 4.1.1-21)] on linux2





From danfolkes at gmail.com  Tue Oct 16 11:55:31 2007
From: danfolkes at gmail.com (danfolkes)
Date: Tue, 16 Oct 2007 15:55:31 -0000
Subject: Why does the message send only once?
Message-ID: <1192550131.869157.88130@q5g2000prf.googlegroups.com>

Why does the message send only once?

The node sends once, then fails after that.

<code>
import socket
import thread
import time

def Node(nodeAddress):

    '''connect to node and get its file load'''

    sN = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # Echo client program
    HOST = nodeAddress        # The remote host
    PORT = 50007              # The same port as used by the server
    sN = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sN.connect((HOST, PORT))
    sN.send('Hello, world')
    data = sN.recv(1024)
    sN.close()
    print 'Received', repr(data)

def Server(address):

    ''' starts a socket server and decides what to do with incomming
stuff'''
    message = "hello from server"
    HOST = ''                 # Symbolic name meaning the local host
    PORT = 50007              # Arbitrary non-privileged port
    sP = None
    sL = None
    sR = None
    sS = None
    sStor = 0
    sTotalStorage = 0
    sCT = (sP,)
    '''look in server.conf for connect_to_server value'''

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.bind((HOST, PORT))
    s.listen(1)
    conn, addr = s.accept()
    print 'Connected by', addr
    while 1:
        print message
        time.sleep(1)
        data = conn.recv(1024)
        #if not data: break
        conn.send(data)
    conn.close()

thread.start_new(Server,('',))
thread.start_new(Node,('127.0.0.1',))
while 1:
    time.sleep(5)
    thread.start_new(Node,('127.0.0.1',))
</code>



From sjmachin at lexicon.net  Mon Oct  8 06:02:24 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 08 Oct 2007 20:02:24 +1000
Subject: Really basic problem
In-Reply-To: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
References: <1191836371.296466.137780@22g2000hsm.googlegroups.com>
Message-ID: <470a0033$1@news.eftel.com.au>

On 8/10/2007 7:39 PM, tomamil wrote:
> i know this example is stupid and useless, but that's not the answer
> to my question.
> here it goes:
> 
> status = 0.0
> for i in range(10):
>    status = status + 0.1
> [snip]

0.1 can not be represented exactly as a binary floating-point number. to 
see what is really happening, use repr(), e.g. like this:

 >>> t = 0.0
 >>> for i in range(10):
...     t += 0.1
...     print i, t, repr(t)
...
0 0.1 0.10000000000000001
1 0.2 0.20000000000000001
2 0.3 0.30000000000000004
3 0.4 0.40000000000000002
4 0.5 0.5
5 0.6 0.59999999999999998
6 0.7 0.69999999999999996
7 0.8 0.79999999999999993
8 0.9 0.89999999999999991
9 1.0 0.99999999999999989
 >>>

Read this: http://docs.python.org/tut/node16.html

HTH,
John


From ldo at geek-central.gen.new_zealand  Thu Oct  4 06:01:06 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 23:01:06 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
Message-ID: <fe2dl2$4i7$3@lust.ihug.co.nz>

In message <13g9ch1fi5c7se5 at corp.supernews.com>, Steven D'Aprano wrote:

> ... pedants ...

When people use that word against me, it's generally a sign they're trying
not to admit I'm right.


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 28 03:21:51 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 28 Oct 2007 07:21:51 -0000
Subject: Unicode raw string containing \u
References: <Xns99D6F3EC75B79OKB@199.45.49.11>
Message-ID: <13i8e4fovg17u1f@corp.supernews.com>

On Sun, 28 Oct 2007 06:58:48 +0000, OKB (not okblacke) wrote:

> I'm trying to write a unicode raw string literal, and I seem to be
> running up against a conflict between the \uXXXX unicode character
> escape and the need to have a literal \u (i.e., backslash followed by a
> lowercase letter U) in the string.
> 
>     	If I do ur"\universe" I get a UnicodeDecodeError because (I think)
> it tries to interpret \universe as a Unicode escape.  But if I do
> ur"\\universe" I get a string that contains two backslashes followed by
> the word "universe".

That's because in a raw string, \\ means two backslashes.

>     	How can I specify a unicode raw string literal that contains a
> single backslash followed by the word "universe"?

The usual way.

>>> word = u'\\universe'
>>> len(word)
9
>>> word[0]
u'\\'
>>> word[1]
u'u'
>>> print word
\universe
>>> word
u'\\universe'


-- 
Steven.



From pavlovevidence at gmail.com  Fri Oct 26 21:55:49 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Fri, 26 Oct 2007 18:55:49 -0700
Subject: Meta-literals
In-Reply-To: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
Message-ID: <1193450149.825890.169520@d55g2000hsg.googlegroups.com>

On Oct 26, 4:54 am, Lennart Benschop <lenna... at xs4all.nl> wrote:
> Python has had the Decimal data type for some time now. The Decimal data
> type is ideal for financial calculations. Using this data type would be
> more intuitive to computer novices than float as its rounding behaviour
> matches more closely what humans expect. More to the point: 0.1 and 0.01
> are exact in Decimal and not exact in float.
>
> Unfortunately it is not very easy to access the Decimal data type. To obtain
> the decimal number 12.34 one has to do something like this:
>
> import decimal
> x=decimal.Decimal("12.34")
>
> Of course we can intruduce a single character function name as an alias for
> the Decimal type constructor, but even then we have to use both parentheses
> and quotes for each and every decimal constant. We cannot make it shorter
> than D("12.34")
>
> With Python 3000 major changes to the language are carried out anyway. My
> proposal would require relatively minor changes.
>
> My proposal:
> - Any decimal constant suffixed with the letter "D" or "d" will be
>   interpreted as a literal of the Decimal type. This also goes for
>   decimal constants with exponential notation.

This brings something to mind.

One thing I've always thought would be cool would be to have
programmable literals.  (Note: Python 3 has a ban on programmable
syntax, and this is clearly falls under that umbrella, although in a
limited form.  So this is not a proposal of any sort, just idle
chatter. :)

The idea is: the compiler would see the literal, evaluate it at
compile time, and marshal the evaluated value into the *.pyc file.
More easily said than done, yes, and I'm aware of the issues in doing
that.  But it'd be pretty useful, I'd think.

Decimal literals has been mentioned.

In fact it could benefit a lot of numeric objects, such as those in
gmpy.

Regular expressions.  A significant speed deficiency of regexps in
Python relative to Perl is that Python has to compile regular
expressions every time the program is invoked.  What if you could
compile the regexp at, you know, compile time, and marshall the
compiled state?  It could speed things up a bit, especially for small,
regexp heavy scripts.

Oh, well, you get the idea.  It's not going to happen, but it'd be
cool while not anything crucial.


Carl Banks



From valereG at hotmail.fr  Fri Oct 19 10:27:24 2007
From: valereG at hotmail.fr (=?iso-8859-1?q?S=E9bastien?= Weber)
Date: 19 Oct 2007 14:27:24 GMT
Subject: How to use module audit-lib ?
Message-ID: <4718becc$0$21146$7a628cd7@news.club-internet.fr>

Hello,

I've installed the python-audit-lib module but there's no documentation.
Does someone know how to use it ?

Thank's in advance,

SW


From matthieu.brucher at gmail.com  Tue Oct 16 06:40:46 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Tue, 16 Oct 2007 12:40:46 +0200
Subject: easy but difficult
In-Reply-To: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
References: <aa405c1f0710160335u6cdfd480jd5e2e235c301bab7@mail.gmail.com>
Message-ID: <e76aa17f0710160340i3a200446x6bc96843ec0abab5@mail.gmail.com>

Hi,

Use write() instead of print

Matthieu

2007/10/16, Beema shafreen <beema.shafreen at gmail.com>:
>
> hi everybody,
>   I have  a file  separated by hash:
> as shown below,
> file:
> A#1
> B#2
> A#2
> A#3
> B#3
>
> I need the result like this:
> A 1#2#3
> B 2#3
>
> how will generate the result like this from the above file
> can somebody tell me what i have to do......
> My code:
>           fh =open('abc_file','r')
>           for line in fh.readlines():
>                    data = line.strip().split('#')
>                     for data[0] in line
>                             print line
>
> I tried but i donot know how to create 1#2#3 in a single line
> regards
> shafreen
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/03185f77/attachment.html>

From ptmcg at austin.rr.com  Fri Oct 12 14:32:41 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 12 Oct 2007 11:32:41 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <1192195158.203063.143920@e9g2000prf.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
	<1192195158.203063.143920@e9g2000prf.googlegroups.com>
Message-ID: <1192203158.119872.305750@e34g2000pro.googlegroups.com>

On Oct 12, 8:19 am, John Machin <sjmac... at lexicon.net> wrote:
> "... most of the developed world" was the [very optimistic] request.
> How does it go with "JAPAN 112-0001 TOKYO Bunkyo-Ku Hakusan 4-Chome 3-
> 2" and will it give the same result for "4-3-2 HAKUSAN BUNKYO-KU TOKYO
> 112-00001 JAPAN"? OK, a little exotic ... closer to "home", what about
> addresses in Quebec? People often write addresses in formats that you
> won't find on the postal service website, but the local postal workers
> will still deliver. Rural addresses can be quaintly medieval e.g. "Lot
> 123, Hundred of Foughbarre" [South Australia]. Etc etc ...

John -

As I'm sure you already know, the answer is "not too well".  I've been
to Japan and Europe too, and I can't even figure out how many digits a
phone number is supposed to have!

I once lived in a small town in Virginia, and received a Christmas
card from a friend (who wanted to remind me just how small a town I
was living in) addressed simply as "The McGuire's, <name-of-town>,
Virginia" - I happened to mention it the next time I was at the post
office, and they said "yep, you're the only McGuires we got!"

In the spectrum of tools from string.split, to re, to pyparsing and
its ilk, to natural language toolkits, the broader the scope of your
"address space", the further you find your self moving toward NLTK.  I
knew my pyparsing script wasn't in the "anywhere in the developed
world" category, that's why I posted the test cases, too.

If you've got an re that can handle everything from "123 Main" to
"221B Baker Street" to "Hollywood and Vine" to "Lot 123, Hundred of
Foughbarre", now THAT would be something.

-- Paul



From gagsl-py2 at yahoo.com.ar  Mon Oct  1 02:04:07 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 01 Oct 2007 03:04:07 -0300
Subject: Fwd: Using fractions instead of floats
References: <1191202509.853059.222530@k79g2000hse.googlegroups.com>
	<1191206183.441075.167450@57g2000hsv.googlegroups.com>
	<52c50880709302007g4103c6c6h9b09ee376fa77998@mail.gmail.com>
	<52c50880709302010n7cbc070fn6223bd94a67542dd@mail.gmail.com>
Message-ID: <op.tzh8g5cnx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 01 Oct 2007 00:10:05 -0300, Andres Riofrio  
<andres.j.new at gmail.com> escribi?:

> From what I've read, seems that the principal reason for rejecting the
> PEP is that there was not much need (enthusiasm)... Well, then I have
> a question: Is there a way to make 5/2 return something other than an
> integer? I can do:
> class int(int):
>   def __add__(self, other):
>     pass
> but that will only work if I do int(5)/int(2)...

I'm afraid not. But if you are crazy enough you can preprocess your source  
using something similar to the tokenize example  
<http://docs.python.org/lib/module-tokenize.html>

-- 
Gabriel Genellina



From kiilerix at gmail.com  Wed Oct 17 18:01:09 2007
From: kiilerix at gmail.com (kiilerix at gmail.com)
Date: Wed, 17 Oct 2007 15:01:09 -0700
Subject: Problem of Readability of Python
In-Reply-To: <mailman.133.1192648267.13605.python-list@python.org>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<1i5m74j.1dpt4l9sbq7zzN%aleax@mac.com>
	<1192647190.910650.98390@i38g2000prf.googlegroups.com>
	<mailman.133.1192648267.13605.python-list@python.org>
Message-ID: <1192658469.934075.156770@k35g2000prh.googlegroups.com>

On Oct 17, 9:11 pm, "Chris Mellon" <arkanes at gmail.com> wrote:
> On 10/17/07, kiilerix at gmail.com <kiilerix at gmail.com> wrote:
> > >>> o = object()
> > >>> o.foo = 7
>
> What makes you think it can't be instantiated directly? You just did
> it. It's not, however, suitable for use as an arbitrary thing to stick
> attributes on.
>
> Which is a little sad, but a necessary requirement for things like
> int() and str() to be small and fast.

So it's an optimization with side effects, giving a special case where
the simple and otherwise "right" way to do it doesn't work? Too bad :-
(

Ok; I'll continue to create dummy classes inheriting from object. And
hope that one day it will be simpler.

Thanks,
Mads



From jstroud at mbi.ucla.edu  Wed Oct 10 16:53:42 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 10 Oct 2007 13:53:42 -0700
Subject: Multidimensional sort
In-Reply-To: <1192045656.850158.11820@v3g2000hsg.googlegroups.com>
References: <1192045656.850158.11820@v3g2000hsg.googlegroups.com>
Message-ID: <feje2q$dkk$1@daisy.noc.ucla.edu>

termiflyer wrote:
> How do I sort this:
> 
>>>> a
> [['3', ['1', '0']], ['4', ['3', '0'], ['2', '0']]]
> 
> where the list can be arbitrarily large by the 3rd dimension (i
> think).  E.g.:
> 
>>>> a
> [['3', ['1', '0']], ['4', ['2', '0'], ['3', '0']]]
> 
> 
> Thanks
> 

Your difficulties come from an ill-defined third dimension. You should 
reorganize to produce this heretofore potential third dimension:

    a = [(i[0], i[1:]) for i in a]

Then sort the reorganized list now that it has a structure amenable to 
sorting:

    for i in a:
      i[1].sort()

Then, if you are pressed, transform it back:

    a = [[i[0]] + i[1] for i in a]

E.g.:

   py> a = [['3', ['1', '0']], ['4', ['3', '0'], ['2', '0']]]
   py> a = [(i[0], i[1:]) for i in a]
   py> a
   [('3', [['1', '0']]), ('4', [['3', '0'], ['2', '0']])]
   py>    for i in a:
   ...      i[1].sort()
   ...
   py> a
   [('3', [['1', '0']]), ('4', [['2', '0'], ['3', '0']])]
   py> a = [[i[0]] + i[1] for i in a]
   py> a
   [['3', ['1', '0']], ['4', ['2', '0'], ['3', '0']]]

James



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

http://www.jamesstroud.com


From m.n.summerfield at googlemail.com  Fri Oct 12 11:07:09 2007
From: m.n.summerfield at googlemail.com (Mark Summerfield)
Date: Fri, 12 Oct 2007 15:07:09 -0000
Subject: sorteddict PEP proposal [started off as orderedict]
In-Reply-To: <7xprzk9274.fsf@ruckus.brouhaha.com>
References: <1190710402.481693.5110@50g2000hsm.googlegroups.com>
	<7xprzk9274.fsf@ruckus.brouhaha.com>
Message-ID: <1192201629.788065.111290@z24g2000prh.googlegroups.com>

On 12 Oct, 09:17, Paul Rubin <http://phr... at NOSPAM.invalid> wrote:
> Mark Summerfield <m.n.summerfi... at googlemail.com> writes:
> > Below is a PEP proposal for a sorteddict. ...
>
> Is this proposal dead?  I'd been meaning to post some thoughts which I
> still haven't gotten around to writing up, and am wondering whether to
> keep it on my todo list.

Yes, it's dead.

I've left the sorteddict implementation on PyPI for those that want
it, but there will be no PEP. GvR's view is that people should use
dict + sorted().



From cokofreedom at gmail.com  Mon Oct 29 11:54:47 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Mon, 29 Oct 2007 15:54:47 -0000
Subject: while within while
In-Reply-To: <1193671730.506934.81610@v3g2000hsg.googlegroups.com>
References: <mailman.515.1193512303.13605.python-list@python.org>
	<13i88bo9djpu279@corp.supernews.com>
	<mailman.553.1193619733.13605.python-list@python.org>
	<13ibrd9m39oua4e@corp.supernews.com>
	<1193671730.506934.81610@v3g2000hsg.googlegroups.com>
Message-ID: <1193673287.349842.177960@v3g2000hsg.googlegroups.com>

On Oct 29, 4:28 pm, kyoso... at gmail.com wrote:
> On Oct 29, 9:26 am, Steven D'Aprano <st... at REMOVE-THIS-
>
>
>
> cybersource.com.au> wrote:
> > On Sun, 28 Oct 2007 21:02:02 -0400, Shawn Minisall wrote:
> > > Thanks a lot for your suggestions.  Unfortunately, a lot of the issues
> > > brought up were simply the way I was taught by my professor and the way
> > > she wants things done,having to use a numbered menu as opposed to
> > > entering r, p or s, being taught just to use one main function for the
> > > entire program, having to init all variables in the program b4 the
> > > actual program starts or else points off for each program, while
> > > statements surrounding every input statement for input validation
> > > purposes...
>
> > > Going beyond those things, would look like someone else wrote my program
> > > since we didn't talk about or ever cover them in class.
>
> > Haven't you heard of "I've been reading ahead from the text book" or
> > "I've been reading discussion groups where they talk about good
> > programming techniques"?
>
> > Besides, you'll probably find your prof will forgive nearly anything if
> > you acknowledge it first: plagiarism is considered a worse sin than
> > failing to learn anything. Look up this thread on Google Groups, and
> > include the URL in your assignment (you might want to give a TinyURL as
> > well), and your prof can see for herself that we're not doing your
> > homework for you.
>
> > (Hey, chances are that she's googling for your name already...)
>
> > Unless the assignment explicitly says "DO NOT SPLIT YOUR CODE INTO
> > FUNCTIONS", you shouldn't be marked down for writing better code than you
> > were asked for.
>
> > On the other hand, if the assignment specifies "YOU MUST DO THIS" then
> > naturally you must follow the instructions.
>
> > * shakes head sadly *
>
> > Kids today, more concerned about following instructions than learning...
>
> > * half wink *
>
> > --
> > Steven
>
> I had a professor who insisted that we not use loops and what-not
> before they were taught in class as well. It seems to be a standard
> thing in Computer Science classes. Kind of like learning mathematical
> proofs or doing standard deviation the long way first. In some ways,
> it's very helpful. In others, it's extremely lame.
>
> Typical of the college education system though.
>
> Mike

I remember being taught Java in my first year of University and for
the most part we were given a layout of methods, accessors and what-
have-yas to complete. This gave us a grounding from which to go from,
which I always thought helped a lot. However our lecturers also
accepted people trying other techniques as long as they passed all the
test-cases (which were shown to you when you submitted your work onto
the website (a brilliant way to see if at each edit you were getting
closer to having correct code))

However the otherside of the story was that, depending on the marker
you could get marked down for having written too many comments...

Still while code styling is a convention or standard it isn't strict
(though python aids in this manner!) and while certain methods are
frowned upon and often are a poorer implementation...I've heard many
of my friends argue "well it does what you want..."



From goldtech at worldpost.com  Mon Oct  8 10:57:46 2007
From: goldtech at worldpost.com (goldtech)
Date: Mon, 08 Oct 2007 07:57:46 -0700
Subject: Tkinter text widget
In-Reply-To: <1191852599.044533.176620@o80g2000hse.googlegroups.com>
References: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
	<1191769207.108962.65980@w3g2000hsg.googlegroups.com>
	<1191852599.044533.176620@o80g2000hse.googlegroups.com>
Message-ID: <1191855466.066397.233780@r29g2000hsg.googlegroups.com>

After some Google searching I found "ScrolledText", this does what I
want :^)


from Tkinter import *
from ScrolledText import ScrolledText
root = Tk()
text = ScrolledText(root, font=("Courier"))
ScrolledText
text.pack()
i='123456789abcdefghijklmnopqrstuvwxyz\n'
for x in range(30):
    text.insert(END, "%3d " % x + i)
text.config(state=DISABLED)
mainloop()



From rhamph at gmail.com  Wed Oct 31 18:31:44 2007
From: rhamph at gmail.com (Rhamphoryncus)
Date: 31 Oct 2007 15:31:44 -0700
Subject: Python Interview Questions
In-Reply-To: <1193821095.670628.187210@y42g2000hsy.googlegroups.com>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
	<mailman.658.1193771958.13605.python-list@python.org>
	<1193821095.670628.187210@y42g2000hsy.googlegroups.com>
Message-ID: <1193850030.474598.142190@v29g2000prd.googlegroups.com>

On Oct 31, 2:58 am, konryd <kon... at gmail.com> wrote:
> > - string building...do they use "+=" or do they build a list
> >    and use .join() to recombine them efficiently
>
> I'm not dead sure about that, but I heard recently that python's been
> optimized for that behaviour. That means: using += is almost as fast
> as joining list. Besides, "+=" is more obvious than the other choice
> and since performance is not a problem until it's a problem, I'd
> rather use it. Anyway: I wouldn't pick it for an interview question.

Concatenating strings using += will often perform quadratically with
the number of concatenations.  Your testing will likely use a small
number and not take a noticeable amount of time.  Then it'll get
deployed and someone will plug in a much larger number, wondering why
the program is so slow.  The recent optimizations just make it more
obscure.

+= shouldn't be an obvious choice for sequences.  If it's mutable,
use .append().  If it's immutable, build up in a mutable sequence,
then convert.

--
Adam Olsen, aka Rhamphoryncus



From artur.siekielski at gmail.com  Thu Oct 11 09:04:53 2007
From: artur.siekielski at gmail.com (Artur Siekielski)
Date: Thu, 11 Oct 2007 13:04:53 -0000
Subject: Declarative properties
In-Reply-To: <5n6j5nFghr61U4@mid.uni-berlin.de>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
Message-ID: <1192107893.492826.233730@d55g2000hsg.googlegroups.com>

On Oct 11, 2:27 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> But why?  Default getters and setters are unnecessary and if you need
> something other than the default you need to write it anyway more
> explicitly.

I see some problems with your approach:

1. If I use instance field 'name' which is accessed directly by other
classes,
and later I decide to implement nonstandard getter, I must refactor
'Person' class
and in some places change 'name' to '_name' (assuming this is now the
field's name).
The problem is that I cannot automatically change 'name' to '_name'
everywhere, because
in some places I want public property value (eg. validated and
formatted), and in other
places raw property value.

2. Properties define (a part of) public interface of a class. When
using fields for public
access, you must tell this explicitly in documentation, or use name
convention. And public
fields definition is mixed with private fields, which doesn't happen
when using properties.

3. Using properties as first-class objects gives possibilities to use
declarative approaches
for constructing them.



From david.trem at gmail.com  Sat Oct 13 03:32:00 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sat, 13 Oct 2007 09:32:00 +0200
Subject: Cross-platform GUI development
In-Reply-To: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
Message-ID: <129e1cd10710130032o525a42f3s39810ab2140fad7a@mail.gmail.com>

Hello,

 I would recommend pyGTK http://www.pygtk.org/
- your app does look the same on all platform (like for Tkinter) (This
argurment apply if the same user would like to run the same app on
different platform and thus do not want to see something different on
each platform...)
- easy to install on all platform:
An all in one installed exist for windows:
http://aruiz.typepad.com/siliconisland/2006/12/allinone_win32_.html
- it looks nice and simple (it is originally the Gimp toolkit).

Just my two cents,

David


2007/10/12, psaffrey at googlemail.com <psaffrey at googlemail.com>:
> I've been programming in Python for 5 or more years now and whenever I
> want a quick-n-dirty GUI, I use Tkinter. This is partly because it's
> the first toolkit I learnt, but also because it's part of the standard
> Python distribution and therefore easy to get Python apps to work
> cross platform - it usually requires almost no porting effort.
>
> However, when I need a little bit more grunt, I tend to turn to Tix,
> which I thought was also fairly standard. However, this week, I wrote
> a Tix application under Linux which I'd really like to work on Mac OS
> and it's proving fairly painful to get it going. There is no Tix in
> the standard fink or apt repositories and when I download a tar-ball,
> it wouldn't build because it had a lot of unmet dependencies. I then
> read a post which said that only Tkinter/Python people really use Tix
> anymore and people in tcl/tk moved onto better toolkits long ago.
>
> My question is if Tix is old hat, what is the GUI toolkit I *should*
> be using for quick-n-dirty cross platform GUI development? I guess
> this is tangentially related to:
>
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/2ed58ff6ac7d030c/42ed0d40ffd0b1c0?lnk=gst&q=tix+#42ed0d40ffd0b1c0
>
> I hope this isn't a stupid question. I'm wearing flame retardant
> underwear.
>
> Peter
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From aisaac at american.edu  Wed Oct 10 11:28:54 2007
From: aisaac at american.edu (Alan Isaac)
Date: Wed, 10 Oct 2007 15:28:54 GMT
Subject: unpickle from URL problem
In-Reply-To: <mailman.18.1192013673.927.python-list@python.org>
References: <mailman.18.1192013673.927.python-list@python.org>
Message-ID: <Wc6Pi.6021$rD1.3627@trnddc01>

Jean-Paul Calderone wrote:
> You shouldn't unpickle things you get from the network, since pickle can
> execute arbitrary code: http://jcalderone.livejournal.com/15864.html


Yes, but I have my reasons.
(This is not library code: I just want students
to all be using the same objects for an exercise,
and I need not to worry about their directory structure.)

Can you explain the differences I see?

Thank you,
Alan Isaac


From pavlovevidence at gmail.com  Wed Oct 10 08:23:58 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 10 Oct 2007 05:23:58 -0700
Subject: Singleton
In-Reply-To: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
Message-ID: <1192019038.631485.62170@o80g2000hse.googlegroups.com>

On Oct 10, 5:36 am, pythoncuri... at gmail.com wrote:
> Hi,
>
> I've been trying to get some sort of singleton working in python, but
> I struggle a bit and I thought I'd ask for advice.
>
> The first approach was simply to use a module, and every variable in
> it will be seen by all who import the module.
> That works in some cases, but not if I have the following structure:
>
> one/
>   __init__.py
>   mod1.py
>   run.py
> two/
>   __init__.py
>   mod2.py
>
> run.py looks like this:
> #!/usr/bin/env python

Well, here's your problem.  Your main script is inside a package: that
is what's causing the namespace difficulties you're seeing.

I highly suggest you not do that.  A better ideas is to create a small
script in the project root that imports run.py, like this:

#!/usr/bin/env python
from one import run


[continuing with run.py]
> import mod1
> print mod1.number

It's is only tangentially related to your problem, but this usage is
deprecated.

Importing a file in the same package using "import modl" instead of
"from one import mod1" is called an impicit relative import (well,
actually in this case it isn't a relative import--more on that later--
but you seem to have intended it as a relative import).  Implicit
relative imports are scheduled to be removed from a future release of
Python.

You should use either an absolute import:

from one import mod1

Or an explicit relative import in Python 2.5 or above:

from . import mod1


See PEP 328.


[continuing again with run.py]
> import two.mod2
> print two.mod2.number
>
> mod1.py looks like this:
> import random
> number=random.randint(0,100)
>
> mod2.py looks like this
> import one.mod1
> number = one.mod1.number
>
> PYTHONPATH is set to the directory containing the 'one' and 'two'
> directories.
>
> Now when I run the 'run.py', it will print two different numbers.
> sys.modules tells me that 'mod1' is imported as both 'one.mod1' and
> 'mod1', which explains the result.

Here's the problem: the main script is NOT executed within the package
"one".  A file's presence in a package directory is not sufficient for
it to be part of the package: you actuatlly have to import the file
through that package.

When you ran run.py, the Python interpreter did not import the file
via the "one" package.  It loaded the file, compiled it, and ran it,
but as a standalone file, not as part of a package.

Then, when you imported "mod1" from "run.py", it only saw that mod1.py
was a file in the same directory.  So it imported it as a regular
module, not a submodule of a package.

Now, when mod2 imported mod1, it went through the package "one" to
import it.  Therefore, it considered mod1 to be part of the package
"one", and so imported it as a submodule of "one".


> Looking at:http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52558
> I find a singleton class, but it has the same problem. If it's
> imported in two different ways, I have not a singleton but a ...
> 'doubleton' or something.
>
> It is possible to solve this by always importing with the complete
> path like 'one.mod1', even when inside the 'one' directory, but that's
> an error waiting to happen.

I've been doing it for a few years; I haven't had a problem.  If
you're concerned, you can add "from __future__ import
absolute_imports" to your files to catch any lapses.


> So how do people solve this? Is there an obvious way that I missed?
>
> I'm thankful for any advice you might provide.

Just keep your main scripts out of the package directories and you'll
be fine.



Carl Banks



From e0427417 at student.tuwien.ac.at  Sun Oct  7 12:52:46 2007
From: e0427417 at student.tuwien.ac.at (Mathias Panzenboeck)
Date: Sun, 07 Oct 2007 18:52:46 +0200
Subject: weakrefs and bound methods
In-Reply-To: <5msflnFepbdqU1@mid.uni-berlin.de>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
Message-ID: <47090ee0$0$11610$3b214f66@tunews.univie.ac.at>

Marc 'BlackJack' Rintsch wrote:
> ``del b`` just deletes the name `b`.  It does not delete the object. 
> There's still the name `_` bound to it in the interactive interpreter. 
> `_` stays bound to the last non-`None` result in the interpreter.
> 

Actually I have the opposite problem. The reference (to the bound method)
gets lost but it shouldn't!


	-panzi


From dmitrey.kroshko at scipy.org  Fri Oct 19 03:22:07 2007
From: dmitrey.kroshko at scipy.org (dmitrey)
Date: Fri, 19 Oct 2007 00:22:07 -0700
Subject: problem with Python class creating
In-Reply-To: <4717b8c4$0$20351$426a74cc@news.free.fr>
References: <1192735357.724298.55500@v29g2000prd.googlegroups.com>
	<4717b8c4$0$20351$426a74cc@news.free.fr>
Message-ID: <1192778527.788922.280850@e34g2000pro.googlegroups.com>

Thanks all for these detailed explanations.
On Oct 18, 10:48 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> dmitrey a ?crit :
> Not unless these classes define their own initializers. But that's
> another problem
>
> > and there are lots of
> > those ones)
>
> > class MyClass:
> >     def __init__(self):
> >         iterfcn = lambda *args: ooIter(self)
>
> The real problem is that you create one anonymous function *per instance*.
No, it's not a problem - it's desired behaviour.
Regards, Dmitrey



From pavlovevidence at gmail.com  Tue Oct 16 11:44:21 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Tue, 16 Oct 2007 08:44:21 -0700
Subject: Simple HTML template engine?
In-Reply-To: <47147166$0$25938$ba4acef3@news.orange.fr>
References: <1192419411.895715.138450@e9g2000prf.googlegroups.com>
	<47147166$0$25938$ba4acef3@news.orange.fr>
Message-ID: <1192549461.574326.317440@y27g2000pre.googlegroups.com>

On Oct 16, 4:07 am, jean-michel bain-cornu <nos... at nospam.fr> wrote:
> > Can anyone recommend a simple python template engine for generating
> > HTML that relies only on the Pyhon Core modules?
>
> > No need for caching, template compilation, etc.
>
> > Speed is not a major issue.
>
> > I just need looping and conditionals. Template inheritance would be a
> > bonus.
>
> I have written my own a couple of years ago.

Haven't we all.

When I wrote mine (HRL), the 5 million web page systems out there
seemed all to be either:

A. Intricate frameworks like Zope with a maniacal insistence on
separation of content from presentation (not that that's bad, it's
just a lot of unnecessary overhead for my needs).

or

B. Template systems with very little versatility.

These days there seems to be more coverage of different needs.  For
instance, Mako looks like something I might have used if it had been
around back then.


Carl Banks



From python at hope.cz  Wed Oct 31 05:02:57 2007
From: python at hope.cz (Johny)
Date: Wed, 31 Oct 2007 02:02:57 -0700
Subject: Readline and record separator
In-Reply-To: <472789dd$0$23261$426a74cc@news.free.fr>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
	<472789dd$0$23261$426a74cc@news.free.fr>
Message-ID: <1193821377.223899.94930@d55g2000hsg.googlegroups.com>

On Oct 30, 8:44 pm, Bruno Desthuilliers
<bdesth.quelquech... at free.quelquepart.fr> wrote:
> Johny a ?crit :
>
> > Is it possible to change record separator when using readline?
> > As far as I know readline reads characters until found '\n' and it is
> > the end of record for readline.
>
> This is not a "record" separator, but a newline. As the name implies,
> file.readline is about reading a text file line by line. For a
> definition of "line" being : "a chuk of text that starts either at the
> beginning of the document or after a newline" and for a definition of
> "newline" being "a platform-specific character or character sequence".
>
> > My problem is that my record consits several '\n' and when I use
> > readline it does NOT read the whole my record.
> > So If I could change '\n' as  a record separator for readline, it
> > would solve my problem.
> > Any idea?
>
> If you're dealing with (so-called) CSV files, you might want to have a
> look at the (oh surprise) CSV module (in the stdlib) instead.
>
> HTH

Bruno,
Thank you for your hint, but can you please be more specific when
saying
"look at the (oh surprise) CSV module (in the stdlib)" ?
Thanks
L



From meithamj at gmail.com  Mon Oct 29 17:53:47 2007
From: meithamj at gmail.com (Meitham)
Date: Mon, 29 Oct 2007 21:53:47 +0000
Subject: How python writes text into another windows application
Message-ID: <4726566B.1030408@gmail.com>

Hi,

I am trying to write a simple program that reads data from a source file
(Excel sheet, XML file or text file) and then write the data into
another application by pasting the data into the applications fields,
and jumps from one field to another by writing \t tab.

My question is, how do I write the data into another application fields.
My target application is the TNT consignment manager. I asked TNT for
their API to make my life easier but they refused to release it :(. I
have a software that uses the same way I am looking after to fill in
application fields, it is the QuickAddress. Any idea how to achieve that?

Thanks

Meitham


From paul at fxtech.com  Tue Oct 16 15:29:28 2007
From: paul at fxtech.com (Paul Miller)
Date: Tue, 16 Oct 2007 14:29:28 -0500
Subject: best way of dealing with currency?
Message-ID: <ji8Ri.1674$Ap1.424@fe183.usenetserver.com>

I'm looking at doing some currency calculations in some Python code 
integrated with a C++ application. I want to be able to come up with the 
same values I get in an Excel spreadsheet.

I've been poking around for a couple of days and haven't come across a 
definitive method for dealing with currency in a precise manner.

What do I need to do? Use rationals? Very high-precision floating-point? 
  mxNumber? Or something else?

Thanks for any and all input!



From mensanator at aol.com  Tue Oct 30 14:50:25 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Tue, 30 Oct 2007 11:50:25 -0700
Subject: choose from a list
In-Reply-To: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
References: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
Message-ID: <1193770225.374384.52290@k79g2000hse.googlegroups.com>

On Oct 30, 1:03 pm, barronmo <barro... at gmail.com> wrote:
> I'm new to programming and even newer to Python and would be grateful
> for some help on what has been a tough problem for me.  The project I
> am working on is an electronic medical record using MySQL/Python.  I'm
> currrently working on a module that looks up a patient's name based on
> input from the user.
>
> My goal is a lookup based on the first 2 or 3 letters of the patient's
> last name.  The matching results would appear as numbered choices so
> that the user would choose only a number to then access various parts
> of the patient's record.  The results might look like this for user
> input "smi":
>
> 1  387  John Smith
> 2  453  Jane Smith
> 3  975  Joe Smithton
>
> Here is a copy of what I have so far, name_lookup.py:
>
> import MySQLdb
>
> def name_find(namefrag):
>
>      conn = MySQLdb.connect(host = "localhost",
>           user = "root",
>           passwd = "n85",
>           db = "meds")
>      cursor = conn.cursor(MySQLdb.cursors.DictCursor)
>      cursor.execute("SELECT patient_ID, firstname, lastname FROM
> demographics WHERE lastname LIKE '"+ str(namefrag)+"%'")
>      results = cursor.fetchall()

Change this

>      for row in results:
>           print "%s   %s %s  %s" % (row["patient_ID"],
> row["firstname"], row["lastname"])

to this

     for rec,row in enumerate(results):
          print "%d %s   %s %s  %s" %
(rec,row["patient_ID"],row["firstname"], row["lastname"])

>
>      cursor.close()
>      conn.close()
>
> Thanks in advance for any help.
>
> Mike




From mensanator at aol.com  Mon Oct 22 17:50:36 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 14:50:36 -0700
Subject: Iteration for Factorials
In-Reply-To: <mailman.344.1193084287.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
	<1193075845.148527.80820@k35g2000prh.googlegroups.com>
	<87bqarov3n.fsf@rudin.co.uk>
	<1193080349.610343.95430@v23g2000prn.googlegroups.com>
	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>
	<mailman.344.1193084287.13605.python-list@python.org>
Message-ID: <1193089836.219692.117420@q5g2000prf.googlegroups.com>

On Oct 22, 3:22 pm, Tim Chase <python.l... at tim.thechases.com> wrote:
> > def fact(x):
> >     if x == 0 or x == 1:
> >         return 1
> >     else:
> >         return reduce(operator.mul, xrange(1,x+1))
>
> If obscurity is the name of the game,
>
>    >>> from operator import mul
>    >>> fact = lambda i: i > 1 and reduce(mul, xrange(1,i+1)) or i
>  >= 0 and 1 or None
>    >>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i))
>
> My eyes hurt after reading that...as the order of operations is
> left to Python to discern (a few judiciously placed parens might
> improve things...though that may be like polishing coprolite)

Indeed. Particularly since it doesn't work:

-2! = -2
-1! = -1
0! = 0
1! = 1
2! = 2
3! = 6
4! = 24
5! = 120
6! = 720
7! = 5040
8! = 40320
9! = 362880

0! is defined to be 1. You'll have a hard time calculating
combinations if 0! returns 0. Also, fact() should raise an
exception when x is negative.

It not only has to work correctly, it has to fail correctly also.

>
> I haven't yet seen an implementation in C (using the python/C
> interface) or anybody handing off a python AST/opcode-list to an
> appropriate function :)
>
> -tkc




From robert.kern at gmail.com  Thu Oct  4 18:24:53 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 04 Oct 2007 17:24:53 -0500
Subject: What does the syntax [::-1] really mean?
In-Reply-To: <1191531485.929483.146370@k79g2000hse.googlegroups.com>
References: <1191510669.307178.257500@57g2000hsv.googlegroups.com>	<Xns99BFD8C6B2BF5duncanbooth@127.0.0.1>	<Xns99BFDB14727D0duncanbooth@127.0.0.1>
	<1191531485.929483.146370@k79g2000hse.googlegroups.com>
Message-ID: <fe3p7m$7ht$1@sea.gmane.org>

Casey wrote:
> On Oct 4, 4:32 pm, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
>> Duncan Booth <duncan.bo... at invalid.invalid> wrote:
>>> the invariant that you are looking for is that for all non-negative a, b:
>>>    x[a:b:1] reversed is x[-len(x)+b-1:-len(x)+a-1:-1]
>> I should of course have said "all a, b in the range 0 <= a <= len(x) and 0
>> <= b <= len(x)".
> 
> Thanks, again! I figured it out from Fred's and your initial posts.
> IM(ns)HO, this is non-intuitive.
> 
> I would expect that the reverse of x[i,j,k] would be x[j,i,-k]; eg;
> x[0:len(x):1] would be x[len(x):0:-1].  This representation is little
> more than syntactic sugar for x[y for y in range(i,j,k)], with a -1
> adjustment to i and j if k is < 0 (due to the way range operates) and
> with appropriate boundary checking on i and j.  The default values for
> i and j would become (0,len(x)), flopped for k < 0.
> 
> There may be a good (or not-so-good) reason this representation
> wouldn't have worked or would have caused problems.  Or maybe it is
> just personal preference.

It would be inconsistent for the reasons that Neil gave.

-- 
Robert Kern

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



From rbonvall at gmail.com  Tue Oct 23 10:26:59 2007
From: rbonvall at gmail.com (Roberto Bonvallet)
Date: Tue, 23 Oct 2007 14:26:59 -0000
Subject: Iteration for Factorials
In-Reply-To: <1193064348.526006.183080@q5g2000prf.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
Message-ID: <1193149619.244514.325360@t8g2000prg.googlegroups.com>

On Oct 22, 11:45 am, Ant <ant... at gmail.com> wrote:
> Er, no. And neither is mine. You may want to google for the definition
> of factorial!

Don't google for the definition... google for the answer!

import urllib
import re
urllib.URLopener.version = "Mozilla/4.0"

def fact(x):
    r = re.compile(r"%d ! = (\d+)" % x)
    for line in urllib.urlopen("http://www.google.cl/search?q=%d%%21"
% x):
        m = r.search(line)
        if m:
            return int(m.group(1))

--
Roberto Bonvallet



From dak at gnu.org  Fri Oct 12 15:17:11 2007
From: dak at gnu.org (David Kastrup)
Date: Fri, 12 Oct 2007 21:17:11 +0200
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<85zlyrutux.fsf@lola.goethe.zz>
	<rqhrg3d2thcqaip790k1eb6t8cdk2g8d8v@4ax.com>
Message-ID: <85lka8p2h4.fsf@lola.goethe.zz>

George Neuner <gneuner2/@/comcast.net> writes:

> Yes and no.  General continuations, as you describe, are not the
> only form continuations take.  Nor are they the most common form
> used.  The most common continuations are function calls and returns.
> Upward one-shot continuations (exceptions or non-local returns) are
> the next most common form used, even in Scheme.
>
> Upward continuations can be stack implemented.  On many CPU's, using
> the hardware stack (where possible) is faster than using heap
> allocated structures.  For performance, some Scheme compilers go to
> great lengths to identify upward continuations and nested functions
> that can be stack implemented.

There is a Scheme implementation (I keep forgetting the name) which
actually does both: it actually uses the call stack but never returns,
and the garbage collection includes the stack.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum


From cmpython at gmail.com  Fri Oct 12 00:12:06 2007
From: cmpython at gmail.com (cmpython at gmail.com)
Date: Fri, 12 Oct 2007 04:12:06 -0000
Subject: Diferent files: GUI (wxpython) Program
In-Reply-To: <femcm9$b87$2@aioe.org>
References: <fem5g9$mia$1@aioe.org>
	<1192145293.118368.214950@k35g2000prh.googlegroups.com>
	<femcm9$b87$2@aioe.org>
Message-ID: <1192162326.139278.183320@e9g2000prf.googlegroups.com>


On Oct 11, 7:47 pm, marc <mar... at gmail.com> wrote:
> cmpyt... at gmail.com escribi?:> On Oct 11, 5:44 pm, marc <mar... at gmail.com> wrote:
> >> Hi why I can call an .py GUI (wxpython) from a program and control it?
> >> I'm newbie in python.
>
> > Sorry, could you restate that?  Explain again what you want to do.
>
> I would to call a python file that contains a GUI (with wx) from a file
> program.
> The programs that I've do, contains a GUI and the code to run it in the
> same file, but I when need to modify a GUI file (I use wxglade) I need
> to delete all code lines (except the GUI code lines) and it difficult
> the program.

Marc,

I haven't used wxGlade, but I would be surprised
if you would have to delete all the code lines in
order to modify the GUI part of the program,
but maybe I am misunderstanding something.  You
should ask on some wxGlade list or help file or
such.

I use Boa Constructor to help build GUIs and it
allows you to make a file which will run the main
frame (the GUI itself).  Maybe this is what you are
looking for?  If so, this is one way to do it:

Say you have a main frame which is your GUI.  Here
is the code for that (this is simply a frame with
a panel on it, super simple):

#--------------MAIN FRAME---------------------------
import wx

def create(parent):
   return Frame1(parent)

class Frame1(wx.Frame):

    def __init__(self, parent):
        wx.Frame.__init__(self, id=-1, parent=parent)

        self.panel1 = wx.Panel(id=-1, parent=self)
#-----------------------------------------------------

You can save this as testFrame1.py

Now you have the program which calls this frame, which we can
save as testApp1.py.  The code for that is as follows:

#------------The app that calls the GUI-------------------
import wx
import testFrame1

class MyApp(wx.App):
    def OnInit(self):
        self.main = testFrame1.create(None)
        self.main.Show()
        self.SetTopWindow(self.main)
        return True

def main():
    application = MyApp(0)
    application.MainLoop()

if __name__ == '__main__':
    main()
#--------------------------------------------

Now you can change anything in the file called
testFrame1 and still launch it from the file
called testApp1.  I think that's basically what
you wanted to do if I understood it.

I'd recommend checking out Boa Constructor.  I've
trimmed the auto-generated code from it to make
it simplified for this message, but it is good
once you're used to it, and it is very easy to make
quick changes to the GUI, both by coding or by using
its Designer, which allows you to arrange the GUI
elements visually.

Lastly, it is probably better to ask questions about
wxPython on the wxPython list.

cm




From ihatespam at hotmail.com  Tue Oct 30 18:25:28 2007
From: ihatespam at hotmail.com (Just Another Victim of the Ambient Morality)
Date: Tue, 30 Oct 2007 22:25:28 GMT
Subject: Is there a usenet library for Python?
Message-ID: <sbOVi.346015$6L.210871@fe03.news.easynews.com>

    Is there a Python library to communicate with a usenet server?  I did a 
bit of googling and found some sites that suggest that you can roll your own 
fairly easily but, mostly, I got a lot of false positives with talk of 
Python libraries on usenet and I am really hoping this work has already 
done.
    Thank you...




From pavlovevidence at gmail.com  Fri Oct 26 18:45:01 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Fri, 26 Oct 2007 15:45:01 -0700
Subject: renice
In-Reply-To: <1193417206.734440.268840@o38g2000hse.googlegroups.com>
References: <mailman.470.1193387423.13605.python-list@python.org>
	<1193417206.734440.268840@o38g2000hse.googlegroups.com>
Message-ID: <1193438701.979110.114360@v3g2000hsg.googlegroups.com>

On Oct 26, 12:46 pm, Dan <thermos... at gmail.com> wrote:
> On Oct 26, 4:30 am, mokhtar <mbmessa... at yahoo.com> wrote:
>
> > Hi
>
> > Is it possible to renice the python process executing the current python
> > script ?:confused:
> > --
> > View this message in context:http://www.nabble.com/renice-tf4695834.html#a13422771
> > Sent from the Python - python-list mailing list archive at Nabble.com.
>
> On UNIX:>>> import os
> >>> os.system("renice -n %d %d" % ( new_nice, os.getpid() ) )


Hmm.  That seems to be the hard way, since you can set the nice value
of the current process (almost) directly:

import os
nice_adder = new_nice - os.nice(0)
os.nice(nice_adder)


But I suppose it could be useful in situations where you need
privleges you don't currently have. E.g.:

os.system("sudo renice -n %s %s" % (new_nice, os.getpid()))


Carl Banks




From duncan.booth at invalid.invalid  Thu Oct 18 05:40:33 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 18 Oct 2007 09:40:33 GMT
Subject: Order by value in dictionary
References: <1192628375.254492.183140@i38g2000prf.googlegroups.com>
	<5nmiplFiouurU2@mid.uni-berlin.de>
	<5nmj7sFiouurU3@mid.uni-berlin.de>
	<1192630735.734441.199820@q5g2000prf.googlegroups.com>
	<5nmk3kFiv0krU2@mid.uni-berlin.de>
	<1192633790.090464.306800@t8g2000prg.googlegroups.com>
	<5nmo79Fiva37U4@mid.uni-berlin.de>
Message-ID: <Xns99CD6C8AD8864duncanbooth@127.0.0.1>

Marc 'BlackJack' Rintsch <bj_666 at gmx.net> wrote:

> Without throwing away 500 items:
> 
> def sortt(d):
>     sorted_items = sorted(d.iteritems(),
>                           key=operator.itemgetter(1),
>                           reverse=True)
>     return map(operator.itemgetter(0), sorted_items)

Isn't that just equivalent to:

def sortt(d):
    return sorted(d.iterkeys(), key=d.__getitem__,
                 reverse=True)

which has the advantage of not building a list of tuples just to throw it 
away?


From arkanes at gmail.com  Tue Oct 16 14:12:00 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 16 Oct 2007 13:12:00 -0500
Subject: re.sub
In-Reply-To: <34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
	<34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>
Message-ID: <4866bea60710161112k40b2ae48i21fe24d76d90058d@mail.gmail.com>

On 10/16/07, Massimo Di Pierro <mdipierro at cti.depaul.edu> wrote:
> Even stranger
>
>  >>> re.sub('a', '\\n','bab')
> 'b\nb'
>  >>> print re.sub('a', '\\n','bab')
> b
> b
>

You called print, so instead of getting an escaped string literal, the
string is being printed to your terminal, which is printing the
newline.


From aisaac at american.edu  Wed Oct 10 11:21:06 2007
From: aisaac at american.edu (Alan Isaac)
Date: Wed, 10 Oct 2007 15:21:06 GMT
Subject: unpickle from URL problem
In-Reply-To: <5n3ajvFfu79fU1@mid.uni-berlin.de>
References: <vSZOi.5979$rD1.4849@trnddc01> <5n3ajvFfu79fU1@mid.uni-berlin.de>
Message-ID: <C56Pi.6019$rD1.3958@trnddc01>

Marc 'BlackJack' Rintsch wrote:
> Pickles are *binary* files, not text files

Actually not:
http://docs.python.org/lib/node316.html

These were created with protocol 0.

But my question is about the different outcomes
I observed.

Thank you,
Alan Isaac


From tasjaevan at gmail.com  Fri Oct 12 08:13:04 2007
From: tasjaevan at gmail.com (tasjaevan at gmail.com)
Date: Fri, 12 Oct 2007 05:13:04 -0700
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <1192191184.333296.20240@t8g2000prg.googlegroups.com>

On Oct 12, 11:58 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> Hello,
> can I determine somehow if the iteration on a list of values is the last
> iteration?
>
> Example:
>
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i
>
> that would print
>
> 1
> 2
> 9
>
> Can this be acomplished somehow?
>

Another suggestion:

  l = [1, 2, 3]
  for i in l[:-1]: print i
  i = l[-1]
  print i*i


James





From byte8bits at gmail.com  Mon Oct 29 16:59:10 2007
From: byte8bits at gmail.com (brad)
Date: Mon, 29 Oct 2007 16:59:10 -0400
Subject: setting variables in outer functions
In-Reply-To: <mailman.598.1193689199.13605.python-list@python.org>
References: <mailman.598.1193689199.13605.python-list@python.org>
Message-ID: <fg5hj9$800$1@solaris.cc.vt.edu>

Tommy Nordgren wrote:
> Given the following:
> def outer(arg)
>      avar = ''
>      def inner1(arg2)
>           # How can I set 'avar' here ?

Try this... works for me... maybe not for you?

def outer(avar=False):
     print avar
     if avar == True:
         return

     def inner(avar=True):
         print avar
         return avar

     outer(inner())

outer()


From timaranz at gmail.com  Thu Oct 18 15:44:36 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Thu, 18 Oct 2007 12:44:36 -0700
Subject: Problem with format string / MySQL cursor
In-Reply-To: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
References: <1192732348.392303.151430@i38g2000prf.googlegroups.com>
Message-ID: <1192736676.035569.188300@e9g2000prf.googlegroups.com>

On Oct 19, 7:32 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> Hello,
> I have a string:
>
> INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
> `gid`, `password`) VALUES (%s, %s, %s, %s, %i, %i, %s)
>
> that is passed to a MySQL cursor from MySQLdb:
>
> ret = cursor.execute(sql, paras)
>
> paras is:
>
> ('flindner', 'te... at florian-lindner.de', '/home/flindner/', '/home/
> flindner/Mail/test', 1001, 1001, '123')
>
> But that gives me an error:
>
> Traceback (most recent call last):
>   File "account.py", line 188, in ?
>     main()
>   File "account.py", line 33, in main
>     execute(action, account_type, options)
>   File "account.py", line 129, in execute
>     executeSQL(sql, options.username, options.login, options.home,
> options.directory, options.uid, options.gid, options.password)
>   File "/home/flindner/common.py", line 29, in executeSQL
>     ret = cursor.execute(sql, paras)
>   File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line
> 148, in execute
>     query = query % db.literal(args)
> TypeError: int argument required
>
> I don't see errors in the format string or some other problem....
>
> What's wrong?
>
> Thanks,
>
> Florian

You should be using '?' for parameter bindings in your sql string not
python format specifiers (you are after all writing sql here not
python).

INSERT INTO mailboxes (`name`, `login`, `home`, `maildir`, `uid`,
`gid`, `password`) VALUES (?, ?, ?, ?, ?, ?, ?)

Cheers
Tim




From dale_bertrand at yahoo.com  Fri Oct 19 11:32:29 2007
From: dale_bertrand at yahoo.com (dale_bertrand at yahoo.com)
Date: Fri, 19 Oct 2007 08:32:29 -0700
Subject: documenting excepetions in Python
Message-ID: <1192807949.182072.69370@y27g2000pre.googlegroups.com>


In python, how do I know what exceptions a method could raise?  Do I
need to look at the source?  I don't see this info in the API docs for
any of the APIs I'm using.

Thanks in advance for your help.



From __peter__ at web.de  Fri Oct  5 03:33:43 2007
From: __peter__ at web.de (Peter Otten)
Date: Fri, 5 Oct 2007 09:33:43 +0200
Subject: "SyntaxError: Non-ASCII character '\xc2'...", was Re: Is there a
	nicer way to do this?
References: <87ejgawpug.fsf@keizer.soze.com>
	<mailman.1543.1191536699.2658.python-list@python.org>
Message-ID: <fe4pcn$49q$03$1@news.t-online.com>

Victor B. Gonzalez wrote:

> anyhow, I keep getting "SyntaxError: Non-ASCII character '\xc2'..." on line 5. 
> anyone know what this is? 

I too had that problem with KNode. Leading space consists of NO-BREAK SPACE
(unichr(160)) which translates to '\xc2\xa0' in UTF-8. As I don't see this
problem here (using pan) I suspect it may be specific to KMail/KNode.

Peter


From david.trem at gmail.com  Sat Oct  6 13:16:36 2007
From: david.trem at gmail.com (David Tremouilles)
Date: Sat, 6 Oct 2007 19:16:36 +0200
Subject: Need help to understand garbage collection
Message-ID: <129e1cd10710061016y30db401bw6906b083c6f0cecf@mail.gmail.com>

I would need help to understand how garbage collection work and how to
"trace" objects...
In the example below an object is created and deleted.
Why in the second part of the example I do not see any object removed:

import gc
class Test(object):
    def __init__(self):
        pass


gc.collect()
original_objects_id = [id(x) for x in gc.get_objects()]
#create object a
a = Test()
gc.collect()
new_objects = [x for x in gc.get_objects()
               if id(x) not in original_objects_id]
print "-" * 40
print "Added object:", len(new_objects)
for obj in new_objects:
    print "*" * 10
    print str(id(obj)) + ":" + str(obj)
    print gc.get_referents(obj)
    print "*" * 3
print "-" * 20

gc.collect()
original_objects_id = [id(x) for x in gc.get_objects()]
#remove object a
del a
gc.collect()
after_rm_objects_id = [id(x) for x in gc.get_objects()]
removed_objects_id = [x for x in original_objects_id
                   if x not in after_rm_objects_id]
print "-" * 40
print "Removed objects:", len(removed_objects_id)
print removed_objects_id
print "-" * 20

Which give:

----------------------------------------
Added object: 2
**********
400600:[[...], <__main__.Test object at 0x62bd0>]
[<__main__.Test object at 0x62bd0>, [[...], <__main__.Test object at 0x62bd0>]]
***
**********
404432:<__main__.Test object at 0x62bd0>
[<class '__main__.Test'>]
***
--------------------
----------------------------------------
Removed objects: 0
[]
--------------------


From pavlovevidence at gmail.com  Mon Oct 29 05:35:19 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Mon, 29 Oct 2007 02:35:19 -0700
Subject: A class question
In-Reply-To: <mailman.567.1193646908.13605.python-list@python.org>
References: <mailman.567.1193646908.13605.python-list@python.org>
Message-ID: <1193650519.626004.220530@k79g2000hse.googlegroups.com>

On Oct 28, 6:01 am, Donn Ingle <donn.in... at gmail.com> wrote:
> Hello,
>
> Is there a way I can, for debugging, access the instance variable name from
> within a class?
> E.g:
> Class X:
>  def debug(self):
>   print "My instance var is %s" % (some magic Python stuff)
>
> So that:
>
> >>>x = X()
> >>>x.debug()
> >>>My Instance var is x
>
> ( Without passing the name in like: x=X(name="x") )


You could search the global and local namespaces of the caller for a
symbol that's bound to the same object as self.  For instance, to find
a such a symbol in the caller's global namespace, this might work:

def debug(self):
    for sym,value in sys._getframe(1).f_globals:
        if value is self:
            print "My instance var is %s" % sym

Improving the example left as an exercise.  There's probably quite a
few recipes to do stuff like this in the Python Cookbook (quod
googla).

Also, note that some objects are not bound to any symbols but instead
are referenced by lists or other containers.


Carl Banks



From BjornSteinarFjeldPettersen at gmail.com  Thu Oct 11 03:02:10 2007
From: BjornSteinarFjeldPettersen at gmail.com (thebjorn)
Date: Thu, 11 Oct 2007 07:02:10 -0000
Subject: "".join(string_generator()) fails to be magic
In-Reply-To: <5n5vinFghr61U1@mid.uni-berlin.de>
References: <mailman.71.1192084784.927.python-list@python.org>
	<5n5vinFghr61U1@mid.uni-berlin.de>
Message-ID: <1192086130.451107.324440@50g2000hsm.googlegroups.com>

On Oct 11, 8:53 am, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> On Thu, 11 Oct 2007 01:26:04 -0500, Matt Mackal wrote:
> > I have an application that occassionally is called upon to process
> > strings that are a substantial portion of the size of memory. For
> > various reasons, the resultant strings must fit completely in RAM.
> > Occassionally, I need to join some large strings to build some even
> > larger strings.
>
> > Unfortunately, there's no good way of doing this without using 2x the
> > amount of memory as the result. You can get most of the way there with
> > things like cStringIO or mmap objects, but when you want to actually
> > get the result as a Python string, you run into the copy again.
>
> > Thus, it would be nice if there was a way to join the output of a
> > string generator so that I didn't need to keep the partial strings in
> > memory. <subject> would be the obvious way to do this, but it of
> > course converts the generator output to a list first.
>
> Even if `str.join()` would not convert the generator into a list first,
> you would have overallocation.  You don't know the final string size
> beforehand so intermediate strings must get moved around in memory while
> concatenating.  Worst case: all but the last string are already
> concatenated and the last one does not fit into the allocated memory
> anymore, so there is new memory allocates that can hold both strings ->
> double amount of memory needed.
>
> Ciao,
>         Marc 'BlackJack' Rintsch

Perhaps realloc() could be used to avoid this?  I'm guessing that's
what cStringIO does, although I'm too lazy to check (I don't have
source on this box). Perhaps a cStringIO.getvalue() implementation
that doesn't copy memory would solve the problem?

-- bjorn



From steve at REMOVE-THIS-cybersource.com.au  Mon Oct 15 08:36:06 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 15 Oct 2007 12:36:06 -0000
Subject: Newbi Q: Recursively reverse lists but NOT strings?
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<471308FA.3070705@islandtraining.com>
	<53396d9e0710150238v2ccd3df7y42f89e776c31e524@mail.gmail.com>
	<mailman.16.1192446949.13605.python-list@python.org>
Message-ID: <13h6nlmd8aku2ea@corp.supernews.com>

On Mon, 15 Oct 2007 13:13:48 +0200, paul wrote:

> Dmitri O.Kondratiev schrieb:
>> Gary, thanks for lots of info!
>> Python strings are not lists! I got it now. That's a pity, I need two
>> different functions: one to reverse a list and one to reverse a string:
> Not necessarily, you can handle both cases in one function:
> 
> def reverse(xs):
>    if xs in [[], '']:
>      return xs
>    return (reverse (xs[1:])) + [xs[0], [xs[0]]][isinstance(list, xs)]
> 
> but this is evil(tm) and violates Rule #1, #2 of "import this" and
> several others.


I'm not sure if you consider the Zen of Python to be numbered from 1 or 
0, so here are the first three:


Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.

I'm not sure why you say that function violates two of those three. Well, 
okay, it's a bit ugly.

I would say it violates this rule:

There should be one-- and preferably only one --obvious way to do it.

Have I missed something? Nobody seems to have pointed out the existence 
of reversed(), which works on both lists and strings.


>>> ''.join(reversed("abc"))
'cba'
>>> list(reversed(range(3)))
[2, 1, 0]

It doesn't take much to make a more user-friendly version:


def myreversed(sequence):
    if isinstance(sequence, basestring):
        return type(sequence)().join(reversed(sequence))
    else:
        return type(sequence)(reversed(sequence))

(in fact, that's so simple I wonder why the built-in reversed() doesn't 
do that).


-- 
Steven


From ianb at colorstudy.com  Mon Oct 15 12:14:17 2007
From: ianb at colorstudy.com (Ian Bicking)
Date: Mon, 15 Oct 2007 09:14:17 -0700
Subject: Paste and WSGI 2.0 [WAS: Yet another comparison of Python Web
	Frameworks]
In-Reply-To: <1192351618.434893.166310@e9g2000prf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1192323138.960870.251160@i13g2000prf.googlegroups.com>
	<1192351618.434893.166310@e9g2000prf.googlegroups.com>
Message-ID: <1192464857.520224.326180@y27g2000pre.googlegroups.com>

On Oct 14, 3:46 am, Michele Simionato <michele.simion... at gmail.com>
wrote:
> I think we do agree entirely, it is just that the application we have
> in
> mind is more a collection of web services than a traditional Web
> application.
> Now, since you are here, there is an unrelated question that I want to
> ask you, concerning the future of Paste with respect to WSGI 2.0.
> I do realize that at this stage WSGI 2.0, is only a draft, still I
> would
> like to know:
>
> 1. if you think that WSGI 2.0 is good idea (I expect you will say
> "yes")

Yeah.  WebOb's functions have made me feel less of a need for that
change, and it normalizes some of the parts of WSGI that WSGI 2
removes.  But I think it would generally help.

> 2. if you plan to support it in Paste and if yes when (I mean, in a
> month,
>    in a year, in three years?)
> 3. if you already have thought of a migration plan and, in that case,
>    what your strategy would likely be.

This I'm really not sure about.  A middleware could wrap any WSGI
application to make it support both WSGI 1 and 2.  However, on the
server side it's unclear how to do the transition (including
middleware that calls WSGI applications).

If WSGI 2 included some marker that I could look for, then it would be
relatively easy too -- I'd always just call applications with a
library function that knew how to deal with both kinds of
applications.  Without that... well, maybe I'll just have to be sure
that there's a clear upgrade path for the spec in general.

Of course, as Graham says, WSGI 2 is just talk at this point; there's
not a ton of momentum toward actually delivering a new spec.

  Ian



From pablo at decode.com.ar  Tue Oct  2 17:58:07 2007
From: pablo at decode.com.ar (Pablo Ziliani)
Date: Tue, 02 Oct 2007 18:58:07 -0300
Subject: List Question
In-Reply-To: <1191360038.845477.170160@22g2000hsm.googlegroups.com>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
	<1191360038.845477.170160@22g2000hsm.googlegroups.com>
Message-ID: <4702BEEF.50603@decode.com.ar>

Paul Hankin wrote:
> On Oct 2, 10:06 pm, brad <byte8b... at gmail.com> wrote:
>   
>> How is this expressed in Python?
>>
>> If x is in y more than three times:
>>      print x
>>
>> y is a Python list.
>>     
>
> Simple and readable:
> if len([a for a in y if x == a]) > 3:
>     print x
>
> Or the slightly-too-flashy version:
> if sum(1 for a in y if x == a) > 3:
>     print x

<joke>

I always use this full-featured, all-inclusive, rock-solid version (see 
the try/except block):

count = i = 0
x = 1
y = [1,2,3,4,5,1,2,3,4,1,2,1]
try:
    while count < 3:
        if y[i] == x:
            count += 1
        i += 1
except RuntimeError:
    pass
except IndexError:
    pass
else:
    print x

</joke>


Sorry, couldn't resist...


From gandalf at shopzeus.com  Tue Oct  9 13:14:37 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Tue, 09 Oct 2007 19:14:37 +0200
Subject: Static variable vs Class variable
In-Reply-To: <470BB06C.1060201@shopzeus.com>
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<470BB06C.1060201@shopzeus.com>
Message-ID: <470BB6FD.7030804@shopzeus.com>


> Your question "is variable a 
> static or class variable?" has no real answer. After running the 
> increment() method on a descendant class, e.g. Child1 will rebind the 
> name Child1.a, creating a new name in the namespace of the class. So the 
> variable Foo.a is still there, but you are accessing Child1.a instead.
>   
Please notice, that theoretically there is no way to "change the value" 
of Foo.a in any way, because this is a NAME that references to an 
IMMUTABLE OBJECT. It means that you can only rebind the variable. You 
cannot change its value, because when we are talking about its value, we 
mean the state of the referenced object. The object referenced by the 
name is an integer instance, namely it is "one". The object "one" always 
remains "one", this cannot be changed. You can add one to one, and you 
will get two, but that is another object.

(I'm sorry, probably you already knew this.)

  Laszlo



From erik at myemma.com  Wed Oct 10 23:11:01 2007
From: erik at myemma.com (Erik Jones)
Date: Wed, 10 Oct 2007 22:11:01 -0500
Subject: I'm starting to think like a Pythonista
In-Reply-To: <5n4tq2Ffu79fU6@mid.uni-berlin.de>
References: <fejah0$lkk$1@solaris.cc.vt.edu>
	<5n4sqoFg4bs3U1@mid.individual.net>
	<fejeni$qte$2@solaris.cc.vt.edu> <5n4tq2Ffu79fU6@mid.uni-berlin.de>
Message-ID: <747BF0DD-F9E0-48CB-A4D0-C4C18C4E9622@myemma.com>


On Oct 10, 2007, at 4:16 PM, Marc 'BlackJack' Rintsch wrote:

> On Wed, 10 Oct 2007 17:03:41 -0400, brad wrote:
>
>> Bjoern Schliessmann wrote:
>>> brad wrote:
>>>> low_odds = [1,3,5,7,9]
>>>> # make a list containing 10 - 98 evens only
>>>> big_evens =  big_evens = [x for x in list(xrange(99)) if x % 2 ==
>>>> 0 and x >8]
>>>
>>> Why use xrange if you convert it to a full list in place? No
>>> advantage there.
>>
>> What is the dis-advantage of using xrange over range in this  
>> circumstance?
>
> It's an unnecessary intermediate step.

Exactly, there's no disadvantage, but the use case for xrange is for  
when there is an advantage.  xrange is a lazy generator, which means  
that the values in the range are generated one by one, i.e. the  
entire range is never present in memory all at once.  If all your  
doing is building that list then there's no advantage.  In fact, [x  
for x in xrange(99)] can be though of as longhand for range(99).  Put  
another way, xrange returns a generator of successive, individual  
numbers over a range (optionally with a step) while range returns a  
list of numbers over a range (optionally with a step).

 >>> l = xrange(99)
 >>> m = range(99)
 >>> type(l)
<type 'xrange'>
 >>> type(m)
<type 'list'>


Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From yinxianglong at gmail.com  Sun Oct 21 10:34:32 2007
From: yinxianglong at gmail.com (=?GB2312?B?0vzP6cH6?=)
Date: Sun, 21 Oct 2007 22:34:32 +0800
Subject: How can I test the web page opened by window.showModalDialog() method
	using PAMIE?
Message-ID: <977252d80710210734l3da0be62o23ee3f72fa6b5310@mail.gmail.com>

How can I test the web page  which is opened by window.showModalDialog()
method using PAMIE?

There are two html pages:a.html and b.html.
[a.html]:
<input type="button" onClick='a();' value="button_a">
<script type="text/javascript">
<!--
function a(){
yin = window.showModalDialog("b.htm","hehe");
}
//-->
</script>

[b.html]:
<input type="button" value="button_b">

Firstly, I clicked button_a in a.html. The b.html is pop up. Now I expect to
click the button_b in b.html. How to do?Thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/eb54672e/attachment.html>

From fw3 at hotmail.co.jp  Tue Oct 16 14:15:06 2007
From: fw3 at hotmail.co.jp (wang frank)
Date: Tue, 16 Oct 2007 18:15:06 +0000
Subject: how to convert string to number?
In-Reply-To: <1192556770.939866.249160@e9g2000prf.googlegroups.com>
References: <mailman.68.1192547833.13605.python-list@python.org>
	<1192556770.939866.249160@e9g2000prf.googlegroups.com>
Message-ID: <BLU107-W45441799345E5042B783C8B49C0@phx.gbl>


Hi,
 
I have struggling to efficiently convert a string list to number. Here is my problem. I have a file that contains lines such as:
 
data_1 1 1 2 3.5
 
After I read the data from the file by using readlines(), each line contains a string. I use the re moduel to split the line into ['data_1', '1','1','2','3.5']. I want to create a dictionary which contains
 
{'data_1':[1 1 2 3.5]}
 
The problem is I coud not efficiently find a way to convert the string to number. 
 
Does anyone know how to create such dictionary efficiently?
 
thanks
 
Frank
_________________________________________________________________
???????????????????????????MSN ???????
http://keyword.jp.msn.com/default.aspx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071016/707e5889/attachment.html>

From cokofreedom at gmail.com  Tue Oct 23 04:09:06 2007
From: cokofreedom at gmail.com (cokofreedom at gmail.com)
Date: Tue, 23 Oct 2007 08:09:06 -0000
Subject: Iteration for Factorials
In-Reply-To: <mailman.362.1193126604.13605.python-list@python.org>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>
	<1193057676.680959.71780@v23g2000prn.googlegroups.com>
	<1193064348.526006.183080@q5g2000prf.googlegroups.com>
	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
	<mailman.362.1193126604.13605.python-list@python.org>
Message-ID: <1193126946.869924.126990@v29g2000prd.googlegroups.com>

On Oct 23, 8:53 am, "Hendrik van Rooyen" <m... at microcorp.co.za> wrote:
>  "Marco Mariani" <marc....arta.com> wrote:
>
> > I don't see how my answer is in any way worse than those based on
> > lambda. Maybe I'm just envious because when I was his age I couldn't
> > google for answers. He should at least be able to do that, shouldn't he?
> > But wait. That would mean understanding what a factorial is. That would
> > require a second search, or a textbook, or an understanding of
> > arithmetics before programming with or without recursion. Should we
> > blame the teachers?
>
> Yes.  And burn their cars to get their attention!
>
> Asking someone to write a factorial algorithm before he knows WTF a
> factorial "is", is either insane, or the ultimate demonstration of deliberate
> lack of cooperation and coordination between departments.
> I feel kind of strongly about this ever since, as a student, the physics people
> expected me to use mathematics that I had not been taught yet...
>
>  ;-)
>
> I shall try to refrain from commenting on the concept of introducing
> recursion into a first course in CS - I am too much tainted by my ability
> to mentally "see" the stack growth in a small processor to be qualified
> to comment.
>
> - Hendrik

Completely agree with this point of view. After being on the receiving
end of such problems when first introduced to Haskell and told to look
at a database written in it and work my way through it (without having
started the course on databases, locks, or any of that jargon) you
find yourself almost helpless at times.

Hard to google for something you don't know about.

Recursive calling is a fun, and yet painful, thing...



From steven.bethard at gmail.com  Sun Oct  7 14:14:57 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 07 Oct 2007 12:14:57 -0600
Subject: Problem of Readability of Python
In-Reply-To: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
Message-ID: <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>

Licheng Fang wrote:
> Python is supposed to be readable, but after programming in Python for
> a while I find my Python programs can be more obfuscated than their C/C
> ++ counterparts sometimes. Part of the reason is that with
> heterogeneous lists/tuples at hand, I tend to stuff many things into
> the list and *assume* a structure of the list or tuple, instead of
> declaring them explicitly as one will do with C structs. So, what used
> to be
> 
> struct nameval {
>     char * name;
>    int val;
> } a;
> 
> a.name = ...
> a.val = ...
> 
> becomes cryptic
> 
> a[0] = ...
> a[1] = ...
> 
> Python Tutorial says an empty class can be used to do this. But if
> namespaces are implemented as dicts, wouldn't it incur much overhead
> if one defines empty classes as such for some very frequently used
> data structures of the program?
> 
> Any elegant solutions?

You can use __slots__ to make objects consume less memory and have 
slightly better attribute-access performance. Classes for objects that 
need such performance tweaks should start like::

     class A(object):
         __slots__ = 'name', 'val'

The recipe below fills in the obvious __init__ method for such classes 
so that the above is pretty much all you need to write:

     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/502237


STeVe


From steve at holdenweb.com  Thu Oct 18 11:24:00 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 18 Oct 2007 11:24:00 -0400
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192661958.052525.163760@e34g2000pro.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>	<1192529804.759199.76350@i13g2000prf.googlegroups.com>	<1192639690.306271.298190@z24g2000prh.googlegroups.com>
	<1192661958.052525.163760@e34g2000pro.googlegroups.com>
Message-ID: <ff7tqi$3dj$2@ger.gmane.org>

allen.fowler wrote:
>> One CGI question - since all of my CGIs are spitting out HTML is their
>> source code safe? wget and linking to the source deliver the output
>> HTML. Are there any other methods of trying to steal the source CGI I
>> need to protect against?
>>
>> Thank you.
> 
> Not sure I fully understand the question.
> 
> Can you post the CGI code here?
> 
That's funny.

The OP's problem is that he suffers from the delusion that people want 
to steal the source code for his CGI script.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From danmcleran at yahoo.com  Wed Oct 10 14:38:47 2007
From: danmcleran at yahoo.com (danmcleran at yahoo.com)
Date: Wed, 10 Oct 2007 11:38:47 -0700
Subject: Plugins / Modularity
In-Reply-To: <1192041012.099313.282600@d55g2000hsg.googlegroups.com>
References: <1192041012.099313.282600@d55g2000hsg.googlegroups.com>
Message-ID: <1192041527.105596.305280@o80g2000hse.googlegroups.com>

On Oct 10, 12:30 pm, Robin K?veland <kaavel... at gmail.com> wrote:
> Hi there. I'm basically in the process of writing my first substantial
> application in Python, and I've made a couple of (I'd like to say)
> design decisions so it won't just be a jumble. So, I've divided my
> program into three sub-packages, core, plugins and utilities.
>
> The core will be needed for the program to be run, but I've put it in
> a package by itself to make things more tidy.
> The utilities will be things that are handy to have (I'm thinking
> packages written by others that will make my work easier), but aren't
> necessary for the program to run. I'm not sure if this is needed yet,
> but I want to have the option in case it turns out to be useful.
>
> The plugins will basically be a package with modules adding
> functionality to the program, so to make it more extensible, and let
> others have a very simple way of extending the functionality without
> having to read a lot of source code and documentation. Adding a plugin
> should be really simple, preferrably you shouldn't have to modify any
> existing source, just put a .py file into the directory. This is where
> I'm sort of stuck. Does anyone know a way I can achieve this?
>
> This poses a couple of challenges for me, given the structure of my
> project and that I have no clue about how to do it. I'm thinking here
> that every plugin will have a main callable, which will recieve a
> Request object which can be queried for information, and an Action
> object which can be used to affect the state of the program to some
> degree. These will ideally be very simple (And for the moment, they
> obviously are).
>
> What I want, is a moment to 'contact' every module in the plugins
> package, and send these two objects to it's main callable. I also want
> to add a way for the program to load and reload plugin modules on the
> fly, so I can modify them without having to shut it down.
>
> Does anyone have some links for me? Alternatively any ideas?
>
> Thanks in advance.

I've just completed the initial launch basically this kind of software
framework. They way I did it was to parse xml files and load modules
and classes dynamically. After instantiating the classes, I call a
certain method that I expect to be present so that each class can
register any functionality it provides with a central registry within
the system. Overall, I've been very pleased with the way it turned
out. It's very easy to add functionality to the system, you simply add
an xml file along with some Python modules and you don't need to
change any existing code. I can provide some examples for you if you
like. Here's a little snippet from a Python script that loads modules
and classes:

def loadModule(moduleName):
    """
    Loads modules from within nested packages
    Reload ensures Python code is re-compiled.
    """
    mod        = __import__(moduleName)
    components = moduleName.split('.')

    for component in components[1:]:
        mod = getattr(mod, component)
        mod = reload(mod)

    return mod

def loadClass(moduleName, className):
    """
    Load a class from a module.
    Note: This does not create a class instance, it only loads the
code.
    """
    module = loadModule(moduleName = moduleName)
    c      = getattr(module, className)

    return c

You can try this out by passing in a string with with module and/or
class path and see that the module and/or class. Note that loadClass
does not create a class instance, so you'll have to instantiate it if
you want to, like this:

o = loadClass(modulePath,className)() #instantiates class that was
loaded dynamically



From martin at marcher.name  Thu Oct 25 15:06:22 2007
From: martin at marcher.name (Martin Marcher)
Date: Thu, 25 Oct 2007 21:06:22 +0200
Subject: print vs sys.stdout.write, and UnicodeError
In-Reply-To: <ffqk7t$jm2$1@knot.queensu.ca>
References: <ffqk7t$jm2$1@knot.queensu.ca>
Message-ID: <5fa6c12e0710251206v165177cdq16217ad7e319027@mail.gmail.com>

25 Oct 2007 17:37:01 GMT, Brent Lievers <3wbl at qlink.queensu.ca>:
> Greetings,
>
> I have observed the following (python 2.5.1):
>
> >>> import sys
> >>> print sys.stdout.encoding
> UTF-8
> >>> print(u'\u00e9')
> ?
> >>> sys.stdout.write(u'\u00e9\n')
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in
> position 0: ordinal not in range(128)

>>> sys.stdout.write(u'\u00e9\n'.encode("UTF-8"))
?

> Is this correct?  My understanding is that print ultimately calls
> sys.stdout.write anyway, so I'm confused as to why the Unicode error
> occurs in the second case.  Can someone explain?

you forgot to encode what you are going to "print" :)

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours

From adurdin at gmail.com  Mon Oct  8 10:55:01 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Mon, 8 Oct 2007 15:55:01 +0100
Subject: Override 'and' and 'or'
In-Reply-To: <1191768523.821775.178080@50g2000hsm.googlegroups.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<13ghqmkl33t3ra4@corp.supernews.com>
	<1191768523.821775.178080@50g2000hsm.googlegroups.com>
Message-ID: <59e9fd3a0710080755o4c8eb957p518e74dde0540729@mail.gmail.com>

On 10/7/07, Dekker <m.aschwanden at gmail.com> wrote:
>
> Well I think it is not possible what I wanted to achieve. By
> overriding the "and" and "or" keyword I wanted to return a new object:
>
> SqlValueInt(4) and SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
> SqlValueInt(5))

PEP 335 is a proposal to allow overriding of the logical 'and', 'or' operators:

See <http://www.python.org/dev/peps/pep-0335/> and the discussion of
it at <http://mail.python.org/pipermail/python-dev/2004-September/048791.html>

A.


From python.list at tim.thechases.com  Thu Oct 11 14:24:03 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 11 Oct 2007 13:24:03 -0500
Subject: matching a street address with regular expressions
In-Reply-To: <1192109138.907631.134890@r29g2000hsg.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>	<4704DD04.4020304@bigfoot.com>	<mailman.32.1192035770.927.python-list@python.org>	<1192044076.090824.133360@o3g2000hsb.googlegroups.com>
	<1192109138.907631.134890@r29g2000hsg.googlegroups.com>
Message-ID: <470E6A43.4010809@tim.thechases.com>

> Don't forget to write test cases. If you have a series of addresses,
> and confirm they are parsed correctly, you are in a good position to
> refine the pattern. You will instantly know if a change in pattern has
> broken another pattern.
> 
> The reason I'm saying this, is because I think your pattern is
> incomplete. I suggest you add a test case for the following street
> address:
> 
> 221B Baker Street

There are a number of weird street names and addresses that one
may need to address.  Having worked with police applications,
they often break it into the BLOCK, DIRECTION, STREET, SUFFIX and
APARTMENT/SUITE.

However, there are complications...

Block can include things like

  1234 1/2 (an actual street format from one of our test cases
where two block numbers were divided to make room)
  221B (though this might be a block + apartment)

Directions can include not only your cardinal N/S/E/W directions
(written out or abbreviated, with or without punctuation), but
can include 8-point directions or more, such as NW, Northwest,
north-west, etc.  It wouldn't even surprise me if locations with
16-point directions exist (NNW).

The Street portion is often whatever is left over when the rest
is unparsed.

The Suffix would be "Rd", "Road", "St", "Ave", "Cir", "Bvd",
"Blvd", "Row", "Hwy", "Highway", etc.  There are about 30 of them
that we used by default, but I'm sure there are some abnormals as
well.

There are wrinkles in even the above, as here in the Dallas area,
we have a "Northwest Highway" where Northwest is the street-name
of the road, not the Direction portion.

I second Goldfish's suggestion for making a suite of both normal
and abnormal addresses along with their expected breakdowns.
Depending on how normalized you want them to be, you may have to
deal with punctuation and spacing abnormalities as well.

-tkc





From marcsgbrevkonto at gmail.com  Sun Oct  7 16:22:10 2007
From: marcsgbrevkonto at gmail.com (MarkyMarc)
Date: Sun, 07 Oct 2007 20:22:10 -0000
Subject: Newbie packages Q
In-Reply-To: <1i5m6we.1wwjdby573v11N%aleax@mac.com>
References: <1191755440.850529.288860@o3g2000hsb.googlegroups.com>
	<mailman.1640.1191759412.2658.python-list@python.org>
	<1191763497.852128.130710@k79g2000hse.googlegroups.com>
	<4708ebfc$0$21561$426a74cc@news.free.fr>
	<1191768074.585609.251570@22g2000hsm.googlegroups.com>
	<4708f9b7$0$4527$9b4e6d93@newsspool3.arcor-online.net>
	<1191771348.165051.36790@50g2000hsm.googlegroups.com>
	<47090370$0$32758$426a74cc@news.free.fr>
	<1191773880.322472.100070@57g2000hsv.googlegroups.com>
	<47091e82$0$15807$426a74cc@news.free.fr>
	<1191786525.264853.107630@k79g2000hse.googlegroups.com>
	<1i5m6we.1wwjdby573v11N%aleax@mac.com>
Message-ID: <1191788530.784618.284080@o80g2000hse.googlegroups.com>

On Oct 7, 10:05 pm, al... at mac.com (Alex Martelli) wrote:
> MarkyMarc <marcsgbrevko... at gmail.com> wrote:
>
>    ...
>
> > > > And sys.path is  /python/Test/bpack
>
> sys.path must be a LIST.  Are you saying you set yours to NOT be a list,
> but, e.g., a STRING?!  (It's hard to tell, as you show no quotes there).
>
> > > The 'Test' package is *not* in your sys.path.
>
> > I can say yes to the first:
> > The atest.py is in the right dir/package.
> > And the third. If it is not good enough that this /python/Test/bpack
> > is in the path.
> > Then I can not understand the package thing.
>
> > I also tried to put /python/ and /python/Test in the sys.path same
> > result.
>
> If the only ITEM in the list that is sys.path is the string '/python',
> then any Python code you execute will be able to import Test.apack (as
> well as Test.bpack, or just Test).
>

Of course I have more than just the /python string in the sys.path.
I have a list of paths, depending on which system the code run on.



From marco at sferacarta.com  Mon Oct 22 08:43:01 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Mon, 22 Oct 2007 14:43:01 +0200
Subject: Iteration for Factorials
In-Reply-To: <1193056647.416562.36150@q3g2000prf.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
Message-ID: <oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>

Py-Fun wrote:

> def itforfact(n):
>     while n<100:
>         print n
>         n+1
> n = input("Please enter a number below 100")

You function should probably return something. After that, you can see 
what happens with the result you get.


From jailtu at luukku.com  Sat Oct 13 08:25:59 2007
From: jailtu at luukku.com (Janne Tuukkanen)
Date: Sat, 13 Oct 2007 15:25:59 +0300
Subject: Foreign Character Problems In Python 2.5 and Tkinter
References: <mailman.160.1192262504.927.python-list@python.org>
Message-ID: <pan.2007.10.13.12.25.41.721728@luukku.com>

Juha S. kirjoitti:
> problem is that when I try to save its contents to a .txt file, any 
> Scandinavian letters such as "??? ???" are saved incorrectly and show up 
> as a mess when I open the .txt file in Windows Notepad.
> 
> It seems that the characters will only get mixed if the user has typed 
> them into the widget, but if the program has outputted them, they are 
> saved correctly.

 Did you define the encoding for the source file and
put u (for unicode) in front of your strings. The
following piece produces proper UTF-8. Couldn't test with
Notepad though, no Windows here.

 Note this message is also encoded in UTF-8, so should be
your editor. I can't believe we are still messing with this
stuff in 2007. In old bad days it was easy, you should
only learn to read { as ?, | as ? etc... and vice versa
with localized terminals -- C code looked rather exotic
with a-umlauts everywhere ;)


#!/usr/bin/python
# -*- coding: utf-8 -*-

from Tkinter import *
import codecs

class Application(Frame):
    def save(self):
        FILE = codecs.open("outfile.txt", "w", "utf-8")
        FILE.write(u"START - ??????\n")
        FILE.write(self.text_field.get(0.0, END))
        FILE.write(u"END - ??????\n")
        FILE.close()
        self.quit()
        
    def __init__(self, master=None):
        Frame.__init__(self, master)
        self.grid()

        self.text_field = Text(self, width=40, height=10)
        self.text_field.grid()
        
        self.save_button = Button(self, text="save and exit", command=self.save)
        self.save_button.grid()
        
if __name__ == "__main__":
    app = Application()
    app.mainloop()



From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 22:52:49 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 18 Oct 2007 02:52:49 -0000
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
	<1192664785.093927.305050@q5g2000prf.googlegroups.com>
Message-ID: <13hdik1rla5bhb2@corp.supernews.com>

On Wed, 17 Oct 2007 23:46:25 +0000, Debajit Adhikary wrote:

> On Oct 17, 5:40 pm, Paul Hankin <paul.han... at gmail.com> wrote:
>> To answer your question though: a += b is *not* the same as a = a + b.
>> The latter would create a new list and assign it to a, whereas a += b
>> updates a in-place.
> 
> I know I'm being a little finicky here, but how would someone know that
> a+=b is not the same as a=a+b?
> Any documentation or reference that mentions this?

Have you Read The Fine Manual at the Fine Website?

Try typing "Python documentation" into your favourite search engine, or 
try going to http://www.python.org/ which links directly to
http://www.python.org/doc/

Unfortunately, searching for operators is always tricky (try searching 
for "*" some day...) but the section you want is here:

http://docs.python.org/ref/augassign.html


Also, it isn't always true that a += b is not the same as a = a+b. It 
depends on what a and b are.


-- 
Steven.


From paul.brauner at loria.fr  Mon Oct 22 08:34:35 2007
From: paul.brauner at loria.fr (Paul Brauner)
Date: Mon, 22 Oct 2007 12:34:35 +0000 (UTC)
Subject: python with braces pre-processor
References: <ffhrdr$ikp$1@news.ciril.fr>
	<1193046718.083827.246210@z24g2000prh.googlegroups.com>
	<ffhs90$ikp$2@news.ciril.fr>
	<1193054402.482756.178190@z24g2000prh.googlegroups.com>
Message-ID: <ffi5cr$ikp$3@news.ciril.fr>

Le Mon, 22 Oct 2007 05:00:02 -0700, Ant a ?crit?:

> On Oct 22, 10:58 am, Paul Brauner <paul.brau... at loria.fr> wrote:
>> I'll look at that. Thanks a lot !
> 
> I've just had a look, it's the pindent.py script in Tools/Scripts (at
> least it is on Windows). It takes code of the following form:
> 
> def foobar(a, b):
>    if a == b:
>        a = a+1
>    elif a < b:
>        b = b-1
>        if b > a: a = a-1
>        # end if
>    else:
>        print 'oops!'
>    # end if
> # end def foobar
> 
> The help in the script looks pretty good.

Thanks,

actually i'm using it right now as a backend and it's helpful.



From hniksic at xemacs.org  Thu Oct 18 05:21:48 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 11:21:48 +0200
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
Message-ID: <87myug3hhv.fsf@mulj.homelinux.net>

Paul Hankin <paul.hankin at gmail.com> writes:

> On Oct 17, 10:03 pm, Debajit Adhikary <debaj... at gmail.com> wrote:
>> How does "a.extend(b)" compare with "a += b" when it comes to
>> performance? Does a + b create a completely new list that it assigns
>> back to a? If so, a.extend(b) would seem to be faster. How could I
>> verify things like these?
>
> Use a += b rather than a.extend(b): I'm not sure what I was
> thinking.

Why?  a.extend(b) is at least as readable, and is guaranteed to extend
the same list.  In general, "a += b" can fall back to the slower "a =
a + b" for sequences that don't support +=.


From kyosohma at gmail.com  Fri Oct 12 16:14:37 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 12 Oct 2007 20:14:37 -0000
Subject: test if email
In-Reply-To: <feojgb$k16$01$1@news.t-online.com>
References: <feojgb$k16$01$1@news.t-online.com>
Message-ID: <1192220077.109848.74740@e9g2000prf.googlegroups.com>

On Oct 12, 2:55 pm, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> Hello,
> is there a function in the Python stdlib to test if a string is a valid
> email address?
>
> Thanks,
>
> florian

What do you mean? If you're just testing the construction of the email
address string, then it's pretty easy. If you want to know if the
email address is live and works, the only way to reliably find that
out is to send a test email there to see if it goes through or
bounces.

Here's an interesting article on the topic, which is completely non-
Python related:

http://www.oreillynet.com/onlamp/blog/2002/12/how_to_validate_an_email_addre.html

Mike



From eboy98 at gmail.com  Tue Oct  2 07:14:38 2007
From: eboy98 at gmail.com (eboy98 at gmail.com)
Date: Tue, 02 Oct 2007 11:14:38 -0000
Subject: problem with special built-in method   __contains__,
Message-ID: <1191323678.609701.258550@y42g2000hsy.googlegroups.com>

if i have a dictionary  name number ....and i want to    ask the list
whether a particular key already
exists.

>>> print number
{'octal': '1234567', 'binary': '10100101', 'decimal': '1234567890',
'hexadecimal': '1-9,a-f'}

 i got  error..after execute

 >>>number._contains_("test")

Traceback (most recent call last):
  File "<pyshell#15>", line 1, in <module>
    number._contains_("test")
AttributeError: 'dict' object has no attribute '_contains_'



From bdesth.quelquechose at free.quelquepart.fr  Thu Oct 18 15:48:30 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 21:48:30 +0200
Subject: problem with Python class creating
In-Reply-To: <1192735357.724298.55500@v29g2000prd.googlegroups.com>
References: <1192735357.724298.55500@v29g2000prd.googlegroups.com>
Message-ID: <4717b8c4$0$20351$426a74cc@news.free.fr>

dmitrey a ?crit :
> Hi all,
> I have the code like this one:
> 
> from myMisc import ooIter
> class MyClass:

Unless you have a need for compatibility with aged Python versions, 
you'd be better using new-style classes:

class MyClass(object):

>     def __init__(self): pass

This is the default behaviour, so you may as well get rid of this line.

>     iterfcn = lambda *args: ooIter(self) # i.e pass the class instance
> to other func named ooIter

cf below about this...

>     field2 = val2
>     field3 = val3 # etc

You're aware that these two attributes are *class* attributes (that is, 
shared by all instances) ?

> So it yields "global name 'self' is not defined", that is true.

Indeed.

> How
> could I handle the situation?


     iterfcn = lambda self: ooIter(self)

which could as well be written:

     def iterfcn(self):
         ooIter(self)


Remember that Python's methods are - at least at this stage - plain 
functions, so the 'self' parameter is *not* optional - else how could 
the function access the current instance ?

And FWIW, you don't need the *args if you don't use any other than 'self'.

> Currently I do (and it works, but give me some troubles - I should
> call MyClass.__init__ for each children class,

Not unless these classes define their own initializers. But that's 
another problem

> and there are lots of
> those ones)
> 
> class MyClass:
>     def __init__(self):
>         iterfcn = lambda *args: ooIter(self) 

The real problem is that you create one anonymous function *per instance*.

> I suspect it has better solution, is it?

Indeed.


From james.kanze at gmail.com  Mon Oct  1 08:25:27 2007
From: james.kanze at gmail.com (James Kanze)
Date: Mon, 01 Oct 2007 12:25:27 -0000
Subject: which language allows you to change an argument's value?
In-Reply-To: <1191170989.227928.252880@g4g2000hsf.googlegroups.com>
References: <1191149233.346818.246170@22g2000hsm.googlegroups.com>
	<f891e9884d1151a8d46e8be15e43b788@ruby-forum.com>
	<1191170989.227928.252880@g4g2000hsf.googlegroups.com>
Message-ID: <1191241527.458051.213430@k79g2000hse.googlegroups.com>

On Sep 30, 6:49 pm, Summercool <Summercooln... at gmail.com> wrote:
> On Sep 30, 4:18 am, 7stud -- <dol... at excite.com> wrote:

> > SpringFlowers AutumnMoon wrote:
> > > we have no way
> > > of knowing what we pass in could get changed.

> > Sure you do.  You look at the function's signature.  In order to use
> > someone else's library, you have to know the function's signature.  And
> > the signature explicitly tells you whether the value you pass in could
> > be changed.

That's not really correct.  It's more a case that if you don't
know what a function does, you don't use it.  Regardless of the
language, calling a function without knowing what it does is a
sure recepe for disaster.

> do you mean in C++?  I tried to find signature in two C++ books and it
> is not there.  Google has a few results but it looks something like
> prototype.  Is signature the same as the function prototype in the .h
> file?  If so, don't we usually just include <___.h> and forget about
> the rest.  Documentation is fine although in some situation, the
> descriptions is 2 lines, and notes and warnings are 4, 5 times that,
> and the users' discussing it, holding different opinion is again 2, 3
> times of that length.  I think in Pascal and C, we can never have an
> argument modified unless we explicitly allow it, by passing in the
> pointer (address) of the argument.

In C, that's partially true; no part of the expressions involved
in the function invocation will be modified through the function
argument unless the address is specifically taken (or the
argument has array type).  The situation in Pascal, C++, Ada and
most other languages is different; Pascal and C++ have reference
parameters (called VAR in Pascal), as well as value paramters,
Ada has in, inout and out parameters.

The situation in Java is somewhat more complicated; formally,
Java only has pass by value, and there's no way a function can
modify any of the arguments.  In practice, however, if the
expression has an object type, the "value" is a pointer (called
reference in Java) to the object; if the object is a well
defined "value" type (e.g. java.lang.String), it will be
immutable, but entity objects don't follow this rule, and not
all value objects (e.g. java.awt.Dimension) are well designed.

> also i think for string, it is a bit different because by default,
> string is a pointer to char or the address of the first char in C and C
> ++.

Strings in C++ are class types, with full value semantics.

> So it is like passing in the address already.  it is when the
> argument n is something like 1 that makes me wonder.

C++ requires an lvalue unless the reference is to a const, so
you cannot pass 1 to a C++ function and expect/worry about it
being changed.  The same holds for most modern languages, I
think, although the mechanisms involved may differ.  (I'd be
very surprised, for example, if Ada allowed anything but what in
C++ would be an lvalue to be passed to an inout or an out
parameter.)  In most modern languages, however, you can
circumvent the controls with enough indirections.

--
James Kanze (GABI Software)             email:james.kanze at gmail.com
Conseils en informatique orient?e objet/
                   Beratung in objektorientierter Datenverarbeitung
9 place S?mard, 78210 St.-Cyr-l'?cole, France, +33 (0)1 30 23 00 34



From aisaac at american.edu  Thu Oct 25 17:14:11 2007
From: aisaac at american.edu (Alan Isaac)
Date: Thu, 25 Oct 2007 21:14:11 GMT
Subject: Python and Combinatorics
In-Reply-To: <471fc476$1@news.bezeqint.net>
References: <471fc476$1@news.bezeqint.net>
Message-ID: <DG7Ui.35516$DX.25951@trnddc06>

none wrote:
> 	Is there some package to calculate combinatorical stuff like (n over 
> k), i.e., n!/(k!(n - k!) ?

Yes, in SciPy.
Alan Isaac

>>> from scipy.misc.common import comb
>>> help(comb)
Help on function comb in module scipy.misc.common:

comb(N, k, exact=0)
    Combinations of N things taken k at a time.

    If exact==0, then floating point precision is used, otherwise
    exact long integer is computed.

    Notes:
      - Array arguments accepted only for exact=0 case.
      - If k > N, N < 0, or k < 0, then a 0 is returned.


From python at rcn.com  Mon Oct  1 13:51:07 2007
From: python at rcn.com (Raymond Hettinger)
Date: Mon, 01 Oct 2007 10:51:07 -0700
Subject: Combine two dictionary...
In-Reply-To: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>
Message-ID: <1191261067.031817.264560@g4g2000hsf.googlegroups.com>

On Oct 1, 10:24 am, Abandoned <best... at gmail.com> wrote:
> Hi..
> dict1={1: 4,  3: 5}... and 2 millions element
> dict2={3: 3,  8: 6}... and 3 millions element
>
> I want to combine dict1 and dict2 and i don't want to use FOR because
> i need to performance.

The dict.update approach is the fastest way to build a combined
dictionary; however, it may be much cheaper to logically combine the
dictionaries rather than spending the time and memory to build a
physically combined dictionary:   http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/305268

Raymond



From saveconi at gmail.com  Thu Oct 18 03:55:03 2007
From: saveconi at gmail.com (Albert77)
Date: Thu, 18 Oct 2007 00:55:03 -0700
Subject: [OT] PLEASE HELP US
Message-ID: <1192694103.329765.18940@v29g2000prd.googlegroups.com>

Hello,
my name is Albert and I'm looking for help.
Please visit my web page.
www.willmarry.net

Thanks

Albert



From carsten at uniqsys.com  Fri Oct 12 08:55:51 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 12 Oct 2007 08:55:51 -0400
Subject: Problem with MySQL cursor
In-Reply-To: <fenkru$i43$01$1@news.t-online.com>
References: <fel7m3$btq$03$1@news.t-online.com>
	<mailman.80.1192110138.927.python-list@python.org>
	<fenkru$i43$01$1@news.t-online.com>
Message-ID: <1192193751.3406.19.camel@dot.uniqsys.com>

On Fri, 2007-10-12 at 13:12 +0200, Florian Lindner wrote:
> Carsten Haese wrote: 
> > sql = "INSERT INTO "+DOMAIN_TABLE+"("+DOMAIN_FIELD+") VALUES (%s)"
> > executeSQL(sql, domainname)
> 
> Ok, I understand it and now it works, but why is limitation? Why can't I
> just the string interpolation in any playes and the cursor function escapes
> any strings so that they can't do harm to my query?

What's happening here is not string interpolation. It's called parameter
binding, and the SQL standard defines exactly what parameter binding can
and can not do. (The SQL standard also defines that parameter markers
are question marks, and the fact that DB-API v2 modules are allowed to
blur the distinction between string interpolation and parameter binding
by choosing to use %s markers is very unfortunate.)

A primary purpose of parameter binding is the ability to prepare a query
once and then execute it many times over with different values. This
saves time because the query only needs to be parsed and planned once.
For this to be useful, parameters can't be bound to anything that would
alter the query plan. Consequently, parameter binding can't "substitute"
any of the following:

* The type of statement (SELECT/UPDATE/etc.)
* The tables involved
* The columns involved
* The structure of the join and where clauses
* The group by, order by, and having clauses
* The names of called functions and procedures
* Probably a whole lot of other things I'm not thinking of right now

Once you exclude all the things that parameter binding can't substitute,
you're left with only a very small segment of the SQL language that
parameter binding *can* substitute, which basically boils down to
"anything that could be a literal value".

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From walterbyrd at iname.com  Wed Oct 10 13:27:06 2007
From: walterbyrd at iname.com (walterbyrd)
Date: Wed, 10 Oct 2007 10:27:06 -0700
Subject: Is hostmonster any good for hosting python?
Message-ID: <1192037226.271956.262390@o80g2000hse.googlegroups.com>

According to hostmonster's list of features, they do support python.
Does anybody have any experience with hostmonster?



From bdesth.quelquechose at free.quelquepart.fr  Sat Oct 27 07:56:48 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 27 Oct 2007 13:56:48 +0200
Subject: simple question on dictionary usage
In-Reply-To: <ffuerv$12ih$1@stationair.kjsl.com>
References: <ffuerv$12ih$1@stationair.kjsl.com>
Message-ID: <472327af$0$31482$426a74cc@news.free.fr>

Frank Stutzman a ?crit :
> My apologies in advance, I'm new to python
> 
> Say, I have a dictionary that looks like this:
> 
> record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
>         'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339',
>         'E6': '1182', 'RPM': '996', 'C6': '311', 'C5': '300',
>         'C4': '349', 'CLD': '0', 'E5': '1148', 'C2': '329',
>         'MAP': '15', 'OIL': '167', 'HP': '19', 'E1': '1137',
>         'MARK': '', 'E3': '1163', 'TIME': '15:43:54',
>         'E2': '1169'}
> 
> From this dictionary I would like to create another dictionary calld
> 'egt') that has all of the keys that start with the letter 'E'.  In
> otherwords it should look like this:
> 
> egt = {'E6': '1182','E1': '1137','E4': '1157','E5': '1148',
>        'E2': '1169','E3': '1163'}
> 
> This should be pretty easy,

Indeed !-)

> but somehow with all my googling I've
> not found a hint.

egt = dict((k, v) for k, v in record.iteritems() if k.startswith('E'))


From Frank.Aune at broadpark.no  Wed Oct 31 12:59:32 2007
From: Frank.Aune at broadpark.no (Frank Aune)
Date: Wed, 31 Oct 2007 17:59:32 +0100
Subject: Fwd: Namespace question
In-Reply-To: <192840a00710310719s4e5452dauc34070f9f83dd25c@mail.gmail.com>
References: <200710311506.27887.Frank.Aune@broadpark.no>
	<192840a00710310718s1faec38pdd6080d023dcb1dd@mail.gmail.com>
	<192840a00710310719s4e5452dauc34070f9f83dd25c@mail.gmail.com>
Message-ID: <200710311759.32399.Frank.Aune@broadpark.no>

On Wednesday 31 October 2007 15:19:25 Andrii V. Mishkovskyi wrote:
> You mean something like this:
> >>>import random
> >>>def foo():
>
> ...    print '42'
>
> >>>random.randit = foo
> >>>random.randit()
>
> 42
>
> am I right?
> --

I was thinking more of the line:

random.py: (my custom random.py module)

---
import random # this is the std lib random module

def someFunc():
	print random.randint()
---

When I try this, the import statement in the above module will import itself, 
and not the std lib random.py

-Frank


From bj_666 at gmx.net  Mon Oct 22 16:20:16 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 20:20:16 GMT
Subject: ignoring chinese characters parsing xml file
References: <mailman.340.1193081085.13605.python-list@python.org>
Message-ID: <5o4evvFktnthU5@mid.uni-berlin.de>

On Mon, 22 Oct 2007 21:24:40 +0200, Fabian L?pez wrote:

> I am parsing an XML file that includes chineses characters, like ^
> uu????w.?L??? or ??????... The problem is that I get an error like:
> UnicodeEncodeerror:'charmap' codec can't encode characters in
> position..

You say you are *parsing* the file but this is an *encode* error.  Parsing
means *decoding*.

You have to show some code and the actual traceback to get help.  Crystal
balls are not that reliable.  ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From nick.bastin at gmail.com  Fri Oct  5 00:02:43 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Fri, 5 Oct 2007 00:02:43 -0400
Subject: Cross platform way of finding number of processors on a machine?
In-Reply-To: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
References: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>
Message-ID: <66d0a6e10710042102m5e7bf9a9i9c6e7ff5c796c608@mail.gmail.com>

On 10/4/07, John <weekender_ny at yahoo.com> wrote:
>
> Is there a way to find the number of processors on a machine (on linux/
> windows/macos/cygwin) using python code (using the same code/cross
> platform code)?

There's no single call that will give you the same info on every
platform, but you can obviously write this yourself and switch based
on os.uname()[0] in most cases.

For Darwin, you can just use the subprocess module to call 'sysctl
hw.logicalcpu'.  I'm not sure if there's a more direct way in python
to use sysctl.  (hw.logicalcpu_max is what the hardware maximally
supports, but someone may have started their machine with OF blocking
some of the processors and you should probably respect that decision)

For Linux you can read /proc/cpuinfo and parse that information.  Be
somewhat careful with this, however, if your processors support HT,
they will show as 2, and that may or may not be what you want.  You
can deterministically parse this information out if you know which
processor families are truly multi-core, and which are HT.

For Win32, the cheap and dirty way is to read the NUMBER_OF_PROCESSORS
environment variable.  99% of the time, this will be correct, so it
might be sufficient for your purposes.  There is a system call
available on windows that will net you the true number of virtual
cpus, but I don't know what it is.

I don't have a cygwin install laying around, but my guess is there's a
sysctl option there too.

One note:  *all* of these methods will tell you the virtual number of
CPUs in a machine, not the physical number.  There's almost no reason
why you care about the distinction between these two numbers, but if
you do, you'll have to go to great lengths to probe the actual
hardware on each platform.  (And pre-WinXP, Windows doesn't actually
know the difference - all processors are presumed to be physical).

Also, Darwin and Linux will easily allow you to get the speed of the
processors, but on x86 these numbers are not the maximums due to C1E
and EIST (x86 processors from all vendors are capable of changing
speeds depending on load).

--
Nick


From bignose+hates-spam at benfinney.id.au  Fri Oct  5 22:09:42 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 06 Oct 2007 12:09:42 +1000
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<7xlkaifz4o.fsf@ruckus.brouhaha.com>
	<47054a3d$0$16347$426a74cc@news.free.fr>
	<1191616293.965858.43000@d55g2000hsg.googlegroups.com>
	<7xd4vtw6b0.fsf@ruckus.brouhaha.com>
	<871wc9qblg.fsf@benfinney.id.au>
Message-ID: <87wsu1ouxl.fsf@benfinney.id.au>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:

> Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> 
> > Giampaolo Rodol? <gnewsg at gmail.com> writes:
> > > What's the equivalent of unittest's "assertRaises"?
> > 
> > def test_raises():
> >     try:
> >        thingy()
> >        assert 42 == 43
> 
> Clearer would be:
> 
>         assert False

Or even better:

    def test_raises_good_exception():
        try:
            thingy()
        except GoodException:
            pass
        else:
            raise AssertionError("Did not raise expected GoodException")

-- 
 \         "Dad always thought laughter was the best medicine, which I |
  `\        guess is why several of us died of tuberculosis."  -- Jack |
_o__)                                                           Handey |
Ben Finney


From hniksic at xemacs.org  Fri Oct 19 09:02:43 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Fri, 19 Oct 2007 15:02:43 +0200
Subject: Convert string to command..
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
Message-ID: <871wbruuj0.fsf@mulj.homelinux.net>

Hrvoje Niksic <hniksic at xemacs.org> writes:

> If you're generating the string from Python, use cPickle instead.
> Much faster:
[...]
>>>> t0 = time.time(); d2 = eval(s); t1 = time.time(); t1-t0
> 1.5457899570465088
>>>> t0 = time.time(); d2 = pickle.loads(s); t1 = time.time(); t1-t0
> 0.060307979583740234

It just occurred to me, for simple data structures like the ones we're
discussing here (dicts of ints), marshal should also be considered.
marshal is the module used for generating and loading .pyc files and,
while it doesn't support all the bells and whistles of pickle, it's
very fast:

>>> t0 = time.time(); d2 = marshal.loads(s); t1 = time.time(); t1-t0
0.029728889465332031

Benchmarks made with the timeit module confirm this difference.

Marshal has the added advantage of using much less space than the
(binary) pickle -- the example dictionary provided above pickled to a
string of 2667791 bytes, while marshal produced a string of 1700002
bytes.


From http  Mon Oct  1 21:14:37 2007
From: http (Paul Rubin)
Date: 01 Oct 2007 18:14:37 -0700
Subject: gui toolkits: the real story? (Tkinter, PyGTK, etc.)
References: <1191287053.541506.88530@d55g2000hsg.googlegroups.com>
Message-ID: <7xr6kez5aa.fsf@ruckus.brouhaha.com>

bramble <cadet.bramble at gmail.com> writes:
> Maybe a better question is, how has Tk managed to keep beating up the
> newer, more modern, more featureful, better documented toolkits
> encroaching on his territory? What's Tk's secret weapon?

First-mover advantage.


From dirkheld at gmail.com  Fri Oct 19 12:18:09 2007
From: dirkheld at gmail.com (dirkheld)
Date: 19 Oct 2007 09:18:09 -0700
Subject: write whitespace/tab to a text file
Message-ID: <1192804138.209651.74710@q5g2000prf.googlegroups.com>

Hi,

I would l like to write some data to a text file. I want to write the
data with whitespace or tabs in between so that I create tabular
columns like in a spreadsheet. How can I do this in python.
(btw, I'm new to python)

names = ['John','Steve','asimov','fred','jim']
## output I would like in txt file : John         Steve
asimov      fred     jim

f=open('/User/home/Documents/programming/python/test.txt','w')
	for x in range(len(names)):
		f.write(tags[x])
	f.close()



From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 16 18:12:46 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 17 Oct 2007 00:12:46 +0200
Subject: Newbi Q: Recursively reverse lists but NOT strings?
In-Reply-To: <mailman.11.1192428714.13605.python-list@python.org>
References: <53396d9e0710141406p6182bdat789fe1706225f345@mail.gmail.com>
	<mailman.11.1192428714.13605.python-list@python.org>
Message-ID: <47153796$0$14258$426a74cc@news.free.fr>

<OT>answering to Dmitri O.Kondratiev<OT>
> On Sunday 14 October 2007 5:06:19 pm Dmitri O.Kondratiev wrote:
> 
>>The function I wrote (below) reverses lists all right:
>>
>>def reverse(xs):
>>    if xs == []:
>>        return []
>>    else:
>>        return (reverse (xs[1:])) + [xs[0]]
>>
>>>>>reverse ([1,2,3])
>>[3, 2, 1]
>>
>>Yet when I try to reverse a string I  get:
>>>>>reverse ("abc")
>>  File "C:\wks\python-wks\reverse.py", line 5, in reverse
>>    return (reverse (xs[1:])) + [xs[0]]
>>  File "C:\wks\python-wks\reverse.py", line 5, in reverse
>>    return (reverse (xs[1:])) + [xs[0]]
>>  File "C:\wks\python-wks\reverse.py", line 2, in reverse
>>    if xs == []:
>>RuntimeError: maximum recursion depth exceeded in cmp
>>
>>
>>What's wrong? Why recursion never stops?

Because an empty string doesn't compare equal to an empty list. So if xs 
is not a list, the test always fails, and you always go to the 'else' 
branch.

Now since in Python, most (and at least all builtins) empty containers 
and/or sequence types evals to false in a boolen context, there's an 
obvious fix to your function:

def reverse(xs):
   if xs:
     return xs
   else:
     return (reverse (xs[1:])) + [xs[0]]


Anyway, there's a much simpler solution:

   reverse = lambda x : x[::-1]

which is so simple it doesn't even justify a function call !-)

Oh, and, yes, while we're at it:

"""
Help on class reversed in module __builtin__:

class reversed(object)
  |  reversed(sequence) -> reverse iterator over values of the sequence
"""

HTH


From deets at nospam.web.de  Fri Oct  5 16:07:18 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 05 Oct 2007 22:07:18 +0200
Subject: Starting a thread before wxPython bootup ... interesting.
In-Reply-To: <1191605770.166713.284950@22g2000hsm.googlegroups.com>
References: <1191516769.594037.191880@22g2000hsm.googlegroups.com>
	<13gb3284gqn0j6b@corp.supernews.com>
	<1191605770.166713.284950@22g2000hsm.googlegroups.com>
Message-ID: <5mnjrpFe0i11U1@mid.uni-berlin.de>

> 
> The real goal is to start the gui in a different thread, and have the
> main thread regain control. That seems like a feasible thing to be
> able to do, though I have been unsuccessful ... if anyone would like
> to suggest something without being covertly insulting, I'm all ears.

AFAIK some toolkits take it personally if they don't run in THE thread, 
meaning the main-thread. No idea if that applies to your situation, but 
as you continue to being vague, so are the answers.

Diez


From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 20 00:28:59 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 20 Oct 2007 04:28:59 -0000
Subject: vote for Python - PLEASE
References: <mailman.193.1192751640.13605.python-list@python.org>
	<13hhk968d8mf7c9@corp.supernews.com>
Message-ID: <13hj10bro78ltad@corp.supernews.com>

On Fri, 19 Oct 2007 15:45:42 +0000, Grant Edwards wrote:

> Even though Python is way ahead, you've probably ruined it for us.  I
> suspect the folks at MySQL will ignore or discount the results when they
> find out you've solicited fradulent votes from the Python community.

It's an Internet poll. By definition, the results are meaningless.


-- 
Steven.


From carsten at uniqsys.com  Wed Oct 17 20:19:36 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 17 Oct 2007 20:19:36 -0400
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
Message-ID: <1192666776.3244.12.camel@localhost.localdomain>

On Wed, 2007-10-17 at 23:55 +0000, Debajit Adhikary wrote:
> I'm writing this little Python program which will pull values from a
> database and generate some XHTML.
> 
> I'm generating a <table> where I would like the alternate <tr>'s to be
> 
> <tr class="Even">
> and
> <tr class="Odd">
> 
> What is the best way to do this?
> 
> I wrote a little generator (code snippet follows). Is there a better
> (more "Pythonic") way to do this?
> 
> 
> # Start of Code
> 
> def evenOdd():
>     values = ["Even", "Odd"]
>     state = 0
>     while True:
>         yield values[state]
>         state = (state + 1) % 2
> 
> 
> # Snippet
> 
>     trClass = evenOdd()
>     stringBuffer = cStringIO.StringIO()
> 
>     for id, name in result:
>         stringBuffer.write('''
>         <tr class="%s">
>             <td>%d</td>
>             <td>%s</td>
>         </tr>
>         '''
>         %
>         (trClass.next(), id, name))

This is a respectable first attempt, but I recommend you familiarize
yourself with the itertools module. It has lots of useful tools for
making your code more elegant and concise.

Rather than spelling out the final result, I'll give you hints: Look at
itertools.cycle and itertools.izip.
 
HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From tjreedy at udel.edu  Wed Oct 31 13:45:09 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 31 Oct 2007 13:45:09 -0400
Subject: Python bug tracker now secret?
References: <472896CD.3060201@animats.com>
Message-ID: <fgaev4$vvg$1@ger.gmane.org>


"John Nagle" <nagle at animats.com> wrote in message 
news:472896CD.3060201 at animats.com...
| I'm now getting messages like this from the Python bug tracker on
| SourceForge:
|
|  Artifact: This Artifact Has Been Made Private. Only Group Members Can
|  View  Private ArtifactTypes.

This message actually comes from SourceForge.  It is not at all what Python 
people would prefer (a proper forwarding message).  Such lack of control 
helped motivate the switch to our own tracker ;-). 





From mickeyl at linuxtogo.org  Sun Oct 14 18:02:56 2007
From: mickeyl at linuxtogo.org (mickeyl at linuxtogo.org)
Date: 14 Oct 2007 22:02:56 GMT
Subject: compile for ARM
References: <mailman.774.1190221806.2658.python-list@python.org>
Message-ID: <5nfi0gFhoft6U1@mid.dfncis.de>

Rafael Marin Perez <rafael81 at dif.um.es> wrote:
> Hello
> 
> I'm Rafael Marin, and work as reseacher in University of Murcia (Spain).
> 
> I want to install and compile modules of python2.4 in a ARMv5b
> architecture.
> 
> Any idea?

Use OpenEmbedded [http://openembedded.org], I've already done everything
that's necessary to get a fine-grained packaged Python distribution from there.

By the power of OE, I'm using Python on my Linksys NSLU2, my Neo1973 mobile
phone, my Zaurus, my iPAQ, etc. :)

Cheers,

Mickey.



From researchbase at gmail.com  Sat Oct 27 12:12:40 2007
From: researchbase at gmail.com (krishnakant Mane)
Date: Sat, 27 Oct 2007 21:42:40 +0530
Subject: how to creating html files with python
Message-ID: <f81479dd0710270912p6d61326erd27a4af4b8bb3eb6@mail.gmail.com>

hello,
I have one strange requirement,
I need to create html files through python and add some data from the database.
it is a GUI based application developed in WX python.
and the reports need to come out in html for some strange reason which
is off topic to discuss here.
but the point is that how do I do it?
should I create a normal file object and write the html with the data
into it or are there some modules to do it?
regards,
Krishnakant.


From brunobgDELETETHIS at users.sourceforge.net  Tue Oct  9 16:55:49 2007
From: brunobgDELETETHIS at users.sourceforge.net (Bruno Barberi Gnecco)
Date: Tue, 09 Oct 2007 17:55:49 -0300
Subject: RuntimeWarning: tp_compare
Message-ID: <fegojh01rmh@news5.newsguy.com>

	I'm getting the following exception when I call an external extension
(pytst):

/usr/lib/python2.5/threading.py:697: RuntimeWarning: tp_compare didn't return -1 or -2 for 
exception
   return _active[_get_ident()]
Traceback (most recent call last):
   File "testDataMiner2.py", line 77, in <module>
     testPlace()
   File "testDataMiner2.py", line 41, in testPlace
     data = db.getDescription(event['id'])
   File "testDataMiner2.py", line 28, in getDescription
     return self.getRow(query, (id,))
   File "../database.py", line 73, in getRow
     self.readlock.acquire()
   File "/usr/lib/python2.5/threading.py", line 94, in acquire
     me = currentThread()
   File "/usr/lib/python2.5/threading.py", line 697, in currentThread
     return _active[_get_ident()]
UnicodeEncodeError: 'ascii' codec can't encode character u'\xfa' in position 52: ordinal 
not in range(128)
awer
 > /usr/lib/python2.5/threading.py(700)currentThread()
-> return _DummyThread()


	Note that the error occurs *after* the call that I isolated as
affecting it (pytst.scan(), in the case). This doesn't happen for simple,
isolated cases, but googling for "tp_compare threading" shows a lot of
similar issues. Does anybody here know what this could be about? Any ideas
to debug or work around it?

-- 
Bruno Barberi Gnecco <brunobg_at_users.sourceforge.net>
I can read your mind, and you should be ashamed of yourself.


From duncan.booth at invalid.invalid  Mon Oct 29 07:51:27 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 Oct 2007 11:51:27 GMT
Subject: SQLite3; weird error
References: <1193657924.375787.287740@o80g2000hse.googlegroups.com>
Message-ID: <Xns99D87896DECEEduncanbooth@127.0.0.1>

TYR <a.harrowell at gmail.com> wrote:

> To do anything with it, you then need to create a cursor object by
> calling foo's method cursor (bar = foo.cursor).

Perhaps this would work better if you actually try calling foo's method?

    	bar = foo.cursor()

Without the parentheses all you are doing is assigning the method to a 
variable, not calling it.


From abarun22 at gmail.com  Sat Oct 20 03:45:20 2007
From: abarun22 at gmail.com (abarun22 at gmail.com)
Date: Sat, 20 Oct 2007 00:45:20 -0700
Subject: SWIG-PYTHON -> Problem in header file inclusion
Message-ID: <1192866320.348410.230700@t8g2000prg.googlegroups.com>

Hi
I am facing a problem while including a C header file in the SWIG
interface file.  However the problem does not occur when i directly
copy the contents of header file in the same place.

My interface file read as follows.
/*  interface file dep.i  */
%module dep
%{
#include "dep.h"
%}
%inline %{
extern int  ReadDep (char* fname, DONfic* don, int nb2, int nb4);
%}

And my header file consists of the structure DONfic as shown below.
/* Header file dep.h */
typedef struct _DONfic {
       int        nb_dep, nb_inc_dep, ncasec_dep;
       int        max_dep;
} DONfic;

>From python i tried to access the C structure as a python class as
shown below.
/* File pydep.py*/
>> import dep
>>.......
>> d = dep.DONfic()
Gives the following error message

Traceback (most recent call last):
 File "pydep.py", line 5, in ?
   d = dep.DONfic()
AttributeError: 'module' object has no attribute 'DONfic'
The problem is that i cannot get access to the structure if i directly
include the file "dep.h". On the other hand if i copy the contents of
the header file and paste it directly in to the header section of the
SWIG interface file it works.
It works for the following interface file .
%module dep
%{
typedef struct _DONfic {
       int        nb_dep, nb_inc_dep, ncasec_dep;
       int        max_dep;
} DONfic;
%}
%inline %{
extern int  ReadDep (char* fname, DONfic* don, int nb2, int nb4);
%}


I tried out lot of options and does n't seems to work. Any suggestions
or ideas are most welcome.



From cfbolz at gmx.de  Sun Oct 28 16:42:42 2007
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Sun, 28 Oct 2007 21:42:42 +0100
Subject: finding out the call (and not only the caller)
In-Reply-To: <1191911909.853048.116640@19g2000hsx.googlegroups.com>
References: <mailman.1652.1191793657.2658.python-list@python.org>
	<1191911909.853048.116640@19g2000hsx.googlegroups.com>
Message-ID: <4724F442.50605@gmx.de>

Hi Neal,

nnorwitz at gmail.com wrote:
> The code doesn't handle all the cases (e.g., nested functions), but
> gives you an idea of what can be done and where to look for the info
> (ie, in the stack frame and how to parse the byte codes to some
> extent).  For nested functions, look in co_consts.
> 
> Bytecodes are specific to CPython.  This code won't work on
> IronPython, Jython, or PyPy.  This code really shouldn't be used for
> production.  However, it demonstrates some of the info available.

Actually that's not true for PyPy. PyPy uses CPython's bytecode, so the 
example works just fine.

Cheers,

Carl Friedrich Bolz


From python.list at tim.thechases.com  Wed Oct  3 10:42:48 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 03 Oct 2007 09:42:48 -0500
Subject: enumerate overflow
In-Reply-To: <fe088s$9b1$1@sea.gmane.org>
References: <1191411991.165082.19010@o80g2000hse.googlegroups.com>
	<fe088s$9b1$1@sea.gmane.org>
Message-ID: <4703AA68.7000206@tim.thechases.com>

>> for lineNum, line in enumerate(f): ...
>>
>> However, lineNum soon overflows and starts counting backwards. How do
>> i force enumerate to return long integer?
>>
> Just how "soon" exactly do you read sys.maxint lines from a file? I 
> should have thought that it would take a significant amount of time to 
> read 2,147,483,647 lines ...

A modestly (but not overwhelmingly) long time:

(defining our own xrange-ish generator that can handle things 
larger than longs)

 >>> def xxrange(x):
...     i = 0
...     while i < x:
...             yield i
...             i += 1
...
 >>> for i,j in enumerate(xxrange(2**33)): assert i==j
...
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
AssertionError


It took me about an 60-90 minutes to hit the assertion on a 
dual-core 2.8ghz machine under otherwise-light-load.  If 
batch-processing lengthy log files or other large data such as 
genetic data, it's entirely possible to hit this limit as the OP 
discovered.

-tkc





From hniksic at xemacs.org  Tue Oct  2 04:14:45 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Tue, 02 Oct 2007 10:14:45 +0200
Subject: s.split() on multiple separators
References: <1191160394.870241.171200@w3g2000hsg.googlegroups.com>
	<bkRLi.1723$hI7.1162@newssvr17.news.prodigy.net>
	<1191179790.181227.323480@k79g2000hse.googlegroups.com>
	<mailman.1325.1191209706.2658.python-list@python.org>
	<slrnfg3tl0.fm5.apardon@rcpc42.vub.ac.be>
Message-ID: <87y7emhr0q.fsf@mulj.homelinux.net>

Antoon Pardon <apardon at forel.vub.ac.be> writes:

> It may be convincing if you only consider natural numbers in
> ascending order. Suppose you have the sequence a .. b and you want
> the reverse.  If you work with included bounds the reverse is just b
> .. a. If you use the python convention, things become more
> complicated.

It's a tradeoff.  The convention used by Python (and Lisp, Java and
others) is more convenient for other things.  Length of the sequence
x[a:b] is simply b-a.  Empty sequence is denoted simply with x[a:a],
where you would need to use the weird x[a:a-1] with inclusive bounds.
Subsequences such as x[a:b] and x[b:c] merge smoothly into x[a:c],
making it natural to iterate over subsequences without visiting an
element twice.

> Another problem is if you are working with floats. Suppose you have
> a set of floats. Now you want the subset of numbers that are between
> a and b included.  If you want to follow the convention that means
> you have to find the smallest float that is bigger than b, not a
> trivial task.

The exact same argument can be used against the other convention: if
you are working with inclusive bounds, and you need to represent the
subset [a, b), you need to find the largest float that is smaller than
b.


From arkanes at gmail.com  Tue Oct  9 12:41:23 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 9 Oct 2007 11:41:23 -0500
Subject: Native class methods
In-Reply-To: <87myusi96f.fsf@keizer.soze.com>
References: <87r6k4iac6.fsf@keizer.soze.com>
	<mailman.26.1191943745.916.python-list@python.org>
	<87myusi96f.fsf@keizer.soze.com>
Message-ID: <4866bea60710090941p3f84bef0j98a8664b0cdd78f6@mail.gmail.com>

On 09 Oct 2007 17:45:12 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
> "Chris Mellon" <arkanes at gmail.com> writes:
>
> > On 09 Oct 2007 17:20:09 +0200, Stefan Arentz <stefan.arentz at gmail.com> wrote:
> > >
> > > Is there an easy way to implement a specific method of a Python class
> > > in C? Like a native method in Java? I would really like to do the
> > > majority of my class code in Python and just do one or two methods
> > > in C.
> > >
> > >  S.
> > >
> >
> > Weave kinda does this - you can use it write inline C code, which it
> > extracts and compiles for you. (http://scipy.org/Weave)
> >
> > You might also want to look at Pyrex and/or Cython, which let you
> > write in a Python-like language that is compiled to C.
> > (http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/ and
> > http://cython.org).
> >
> > Depending on what you want to do in C, just writing it as a normal
> > shared library and calling it with ctypes might also be an effective
> > solution. (in the standard library, as of 2.5)
>
> Yeah I'm really trying to do this without any dependencies on external
> libraries. The ctypes way looks interesting but I had really hoped for
> something more JNI-like :-/
>
>  S.

Weave is a runtime solution, but Pyrex and Cython are both compilers
(they compile a Python like language to C, which you the compile into
a single extension module), and ctypes is in the standard library.
Using ctypes would be pretty much just like JNI, except it's dynamic
and not horrible.


From alexandre.badez at gmail.com  Tue Oct 16 09:16:50 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Tue, 16 Oct 2007 13:16:50 -0000
Subject: Dynamic and lazy import
Message-ID: <1192540610.799241.236160@t8g2000prg.googlegroups.com>

Hye everyone,

I'm would like to do something a bit tricky.

I would like when I do something like to create a __init__ package's
(here calle my_package) file witch make an action when we try to
import something in this package...

Quiet like __getattribute__ work for a class, I would like this kind
of behaviour for a whole module or a package

be a bit clearer:
I've got a normal package/module/class (whathever) where I do
something like:

from my_package import my_module

(but in the my_package I've got only:
my_package / __init__.py

And in the __init__ of my my_package something like __getattribute__
(but for a module) that would return something for my_module

I know, that I can do something like charging everything "before" in
__init__ like:
my_module = the_thing_I_want

But I need it to be lazy (because I may have many module witch could
be very awful...).

Any idea ?
Is it possible ?



From kyoguan at gmail.com  Mon Oct 22 02:37:36 2007
From: kyoguan at gmail.com (kyo guan)
Date: Mon, 22 Oct 2007 14:37:36 +0800
Subject: a question about decorator
Message-ID: <003b01c81476$0b8dd4c0$811ba8c0@kyom>

Hi:

	please look at this code.

def A():
	print 'warp in A'
	def why(self, *arg, **kw):
		print 'in A'
		print self
		print arg
		print kw
		#self(*arg, **kw)
	
	return why
	
class T(object):
	@A()
	def test(g, out):
		print 'in test', out

it will out put:

warp in A
in A
<function test at 0x00BF0C70>
()
{}

the function why will be called, why? there is no code to call it.

Kyo.



From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Oct 18 13:33:37 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 18 Oct 2007 19:33:37 +0200
Subject: Convert string to command..
In-Reply-To: <ff84p5$mgp$1@south.jnrs.ja.net>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<5npcq3Fjgi5nU1@mid.uni-berlin.de>
	<1192722434.921870.112350@k35g2000prh.googlegroups.com>
	<5npe2qFjhdjpU1@mid.uni-berlin.de>
	<1192723746.476620.244430@e34g2000pro.googlegroups.com>
	<1192725702.690339.302300@q5g2000prf.googlegroups.com>
	<ff84p5$mgp$1@south.jnrs.ja.net>
Message-ID: <471798f1$0$439$426a74cc@news.free.fr>

Richard Brodie a ?crit :
> "Matimus" <mccredie at gmail.com> wrote in message 
> news:1192725702.690339.302300 at q5g2000prf.googlegroups.com...
> 
>> I think several people have given you the correct answer, but for some
>> reason you aren't getting it. Instead of saving the string
>> representation of a dictionary to the database...
> 
> Mind you, if this were Jeopardy, "Store a binary pickle
> of a denormalized table back in the database" would
> be a tough one. 
> 
> 
Indeed.


From bozonm at vscht.cz  Sun Oct  7 09:47:33 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Sun, 07 Oct 2007 15:47:33 +0200
Subject: Pil image module, "mode" bug..
References: <1191762186.617411.309700@g4g2000hsf.googlegroups.com>
Message-ID: <pan.2007.10.07.13.47.31.978730@vscht.cz>

On Sun, 07 Oct 2007 06:03:06 -0700, Abandoned wrote:

> Hi..
> I find the picture color with:
> im=Image.open("/%s" %name)
> color=im.mode   #p=black & beyaz rgb=color L=grey
> 
> This usually work true but in these pictures:
> http://malatya.meb.gov.tr/images/alt/ilsis_logo.gif
> http://malatya.meb.gov.tr/images/meb.gif
> 
> Say me P (black&white) but these pictures are color..
> 
> What is the reason of this ?
> 
> I'm sorry my bad english

P does mean palette, black&white is a special case of palette, with two
colors.



From tjreedy at udel.edu  Fri Oct 19 17:21:49 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 19 Oct 2007 17:21:49 -0400
Subject: class vs type
References: <mailman.208.1192798489.13605.python-list@python.org><87wstjtfip.fsf@mulj.homelinux.net>
	<ffali6$op5$1@ger.gmane.org>
Message-ID: <ffb75c$kl6$1@ger.gmane.org>


"Colin J. Williams" <cjw at sympatico.ca> wrote in message 
news:ffali6$op5$1 at ger.gmane.org...
| Doesn't Python 3 provide an opportunity
| to move away from discussions about
| new_style vs old-style?  This an
| opportunity to treat old-style as a
| historical artefact, not requiring
| current explanation.

Yes, there will not be 'old-style' classes in Py3 and 3.0 doc will not 
mention them..  But we are actually at 2.5 and there will be 2.6, 2.7, 2.8? 
that still have them. 





From paul.hankin at gmail.com  Fri Oct 19 14:58:18 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Fri, 19 Oct 2007 18:58:18 -0000
Subject: Organizing Sequential Data (TimeStamps) Overthinking?
In-Reply-To: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
References: <1192818402.479086.252360@e34g2000pro.googlegroups.com>
Message-ID: <1192820298.752566.157050@v29g2000prd.googlegroups.com>

On Oct 19, 7:26 pm, xkenneth <xkenn... at gmail.com> wrote:
>    Just a quick question. I want to be able to have a data structure
> that organizes data (timestamps I'm working with) sequentially, so
> that i can easily retrieve the first x amount of timeStamps without
> iterating over a list. My thought was to use a binary tree, am i
> overthinking the problem to try and implement this structure inside of
> python? I was also hoping this would already be done for me.

If you're only iterating once, store your data in a list, and sort it
when you need to iterate. If you only want the n largest (or smallest)
timestamps - as suggested by your question - keep your data in a list,
and use heapq.nlargest (or heapq.nsmallest).

In fact, I'd try these even if you think you really need a binary
tree: it might be fast enough anyway.

--
Paul Hankin



From weekender_ny at yahoo.com  Thu Oct  4 23:28:27 2007
From: weekender_ny at yahoo.com (John)
Date: Thu, 04 Oct 2007 20:28:27 -0700
Subject: Cross platform way of finding number of processors on a machine?
Message-ID: <1191554907.422787.197740@y42g2000hsy.googlegroups.com>


Is there a way to find the number of processors on a machine (on linux/
windows/macos/cygwin) using python code (using the same code/cross
platform code)?



From goldtech at worldpost.com  Thu Oct 25 15:13:11 2007
From: goldtech at worldpost.com (goldtech)
Date: Thu, 25 Oct 2007 12:13:11 -0700
Subject: Test for a unicode string
In-Reply-To: <4720171e$0$4067$9b622d9e@news.freenet.de>
References: <1193252964.441263.179350@e9g2000prf.googlegroups.com>
	<4720171e$0$4067$9b622d9e@news.freenet.de>
Message-ID: <1193339591.211328.255950@o38g2000hse.googlegroups.com>

snip...
> > Like:
> >  if  unicode string:
> >       print  'string's line #'
> >  else:
> >       process the string
>

If I use "re.UNICODE"  like:  m = re.match(r"\w+", s, re.UNICODE)

then it seems to fix my problem.  Trying to read as much as I can on
unicode....



From carsten at uniqsys.com  Mon Oct  1 10:33:54 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Mon, 01 Oct 2007 10:33:54 -0400
Subject: Select as dictionary...
In-Reply-To: <1191247924.3393.7.camel@dot.uniqsys.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
	<20071001135746.GA12995@sdf.lonestar.org>
	<1191247924.3393.7.camel@dot.uniqsys.com>
Message-ID: <1191249234.3393.18.camel@dot.uniqsys.com>

> linkdict = dict(iter(aia.fetchone,None))

And by the way, that line can be shortened to "linkdict=dict(aia)" if
the cursor object supports the iterator protocol, but that's not a
mandatory feature in DB-API v2. The longer form is guaranteed to work
with any DB-API v2 compliant implementation.

-- 
Carsten Haese
http://informixdb.sourceforge.net




From steven.bethard at gmail.com  Tue Oct  2 19:28:16 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 02 Oct 2007 17:28:16 -0600
Subject: global variables
In-Reply-To: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
References: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
Message-ID: <c8udnZFud8-MSZ_anZ2dnUVZ_v7inZ2d@comcast.com>

TheFlyingDutchman wrote:
> Does anyone know how the variables label and scale are recognized
> without a global statement or parameter, in the function resize() in
> this code:
[snip]
> def resize(ev=None):
>       label.config(font='Helvetica -%d bold' % \
>           scale.get())

You're just calling a method on the "label" object. Python looks in the 
function local namespace and doesn't see a "label" object, so it steps 
up to the global namespace. There is a "label" object in the global 
namespace so it uses that one.

STeVe


From zyzhu2000 at gmail.com  Tue Oct 23 16:42:44 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Tue, 23 Oct 2007 20:42:44 -0000
Subject: Speed of Nested Functions & Lambda Expressions
In-Reply-To: <mailman.380.1193155596.13605.python-list@python.org>
References: <1193154050.424718.298030@i13g2000prf.googlegroups.com>
	<mailman.380.1193155596.13605.python-list@python.org>
Message-ID: <1193172164.708360.321850@e34g2000pro.googlegroups.com>

On Oct 23, 11:06 am, Gary Herron <gher... at islandtraining.com> wrote:
> beginner wrote:
> > Hi All,
>
> > It is really convenient to use nested functions and lambda
> > expressions. What I'd like to know is if Python compiles fn_inner()
> > only once and change the binding of v every time fn_outer() is called
> > or if Python compile and generate a new function object every time. If
> > it is the latter, will there be a huge performance hit? Would someone
> > give some hint about how exactly Python does this internally?
>
> > def fn_outer(v):
> >     a=v*2
> >     def fn_inner():
> >         print "V:%d,%d" % (v,a)
>
> >     fn_inner()
>
> > Thanks,
> > Geoffrey
>
> The code is compiled only once when the file is initially read in.
> During execution of fn_outer, v will be bound to a value, then a, then
> fn_inner will be bound (to an already compiled code object) and so on.
>
> Really, from the point of view of Python while executing fn_outer, the
> def of fn_inner looks just like an assignment with fn_inner as the
> variable name and a code object as the value.
>
> Gary Herron- Hide quoted text -
>
> - Show quoted text -

I see. Thanks Gary!



From gagsl-py2 at yahoo.com.ar  Thu Oct 18 01:49:12 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 18 Oct 2007 02:49:12 -0300
Subject: Strange behaviour with reversed()
References: <13hdochic30oo43@corp.supernews.com>
Message-ID: <op.t0do4aohx6zn5v@gabriel2.softlabbsas.com.ar>

En Thu, 18 Oct 2007 01:31:13 -0300, Steven D'Aprano  
<steve at REMOVE-THIS-cybersource.com.au> escribi?:

> I don't understand how reversed() is operating. I've read the description
> in the docs:
>
> reversed(seq)
> Return a reverse iterator. seq must be an object which supports the
> sequence protocol (the __len__() method and the __getitem__() method with
> integer arguments starting at 0). New in version 2.4.
>
> and help(reversed) but neither gives any insight to what happens when you
> use reversed() on a sequence, then modify the sequence.

A reversed object is rather simple: it stores the original sequence (a  
reference, as usual, not a copy!) and the next index to use, starting at  
len-1. Each time the next() method is called, the index is decremented  
until it goes below 0.
This is more or less the equivalent Python code:

class Reversed:
     def __init__(self, seq):
         n = len(seq)
         self.index = n-1
         self.seq = seq

     def __iter__(self):
         return self

     def next(self):
         index = self.index
         if index>=0:
             try: item = self.seq[index]
             except (IndexError,StopIteration): pass
             else:
                 self.index -= 1
                 return item
         self.index = -1
         self.seq = None
         raise StopIteration

Note that the starting index is determined at creation time, not when the  
iteration begins. So, if you create a reversed object over a list  
containing 3 elements, the first returned element will be seq[2], then  
seq[1], then seq[0]. It doesn't matter if you modify the list after  
creating the reversed object but before starting the iteration: it will  
start at seq[2] even if it's not the last item, and will silently stop if  
seq[2] is not a valid index anymore.

-- 
Gabriel Genellina



From deets at nospam.web.de  Sat Oct 13 09:21:18 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 13 Oct 2007 15:21:18 +0200
Subject: how to create a pointer, or is there a better solution ?
In-Reply-To: <mailman.167.1192281141.927.python-list@python.org>
References: <mailman.167.1192281141.927.python-list@python.org>
Message-ID: <5nbv2jFgrsb7U1@mid.uni-berlin.de>

stef mientki schrieb:
> hello,
> 
> I've a program where users can make modules,
> by just dumping them in a certain directory,
> then they will dynamically link into the program if needed.
> 
> One of the communication channels I use,
> is a general global file, which should be imported by all user modules.
> 
> One of the things a user should be able to do is to create " global 
> variables",
> which should then be available in all the other program modules.
> So the global file contains a list, call JAL_Globals = [],
> where each user can append the globals he want to be exposed to the 
> outside world (for read only).
> Now if these globals are complex items, no problem, I get pointers and 
> can access them.
> But if these variables are simple, like integers, I get the value only 
> once ;-)
> 
> How can I create of dynamic pointers, even to simple variables ?
> Or is there a better way ?

Don't use a list, use a dictionary that has names mapped to values. Then 
the problem goes away, because instead of mutating an object (which you 
still can do), you can also rebind a new one -e.g like this:


JAL_Globals['name'] += 100

Diez


From arkanes at gmail.com  Mon Oct  8 11:36:12 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 8 Oct 2007 10:36:12 -0500
Subject: weakrefs and bound methods
In-Reply-To: <13gk7r2b9o6il33@corp.supernews.com>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
	<13gi4vrfqhrs48d@corp.supernews.com>
	<1i5m4bz.18obx4r5bg0gaN%aleax@mac.com>
	<pan.2007.10.08.03.28.23@REMOVE.THIS.cybersource.com.au>
	<1191816415.377623.125700@o80g2000hse.googlegroups.com>
	<13gk7r2b9o6il33@corp.supernews.com>
Message-ID: <4866bea60710080836i6df3dfdcu7fdd84ba6e4eb721@mail.gmail.com>

On 10/8/07, Steven D'Aprano <steve at remove-this-cybersource.com.au> wrote:
> On Mon, 08 Oct 2007 04:06:55 +0000, Michele Simionato wrote:
>
> > > Hmmm... I'm not sure I understand how a with statement is meant to
> > > replace class.__del__ in practice. It seems to me that the two things
> > > have different uses. with is useful when you create an object, do
> > > something with it, dispose of it in an orderly fashion, and then
> > > continue. How does that help when you create an unknown number of
> > > long-lasting objects where you can't predict how and when they will be
> > > disposed of?
>
> [snip]
>
> >> Now, I don't think the above is feasible. What am I missing?
> >
> > Rename your __del__ to close and call it explicitely:
> >
> > p.close()
> > alist[3].close()
> > alist[853].close()
> > alist[701].close()
>
> Well, that utterly sucks. If I wanted to call finalizers explicitly, I'd
> be writing in C.
>
> You say that using __del__ leads to hard-to-debug "bombs in my code
> waiting to explode at some unknown moment". Maybe so -- but so does
> explicitly managing resources by hand in the way you suggest, and quite
> frankly, I suspect I'd have a hell of a lot fewer bugs by relying on
> __del__ and the garbage collector than I would from managing resources
> manually in a big project.
>

The point that is being made is that "relying on __del__" is stupid,
because __del__ isn't reliable. It's akin to a Java finalizer - there
is no guarantee that it will be called at all. So you can use __del__,
and have to be continually aware of the dangers of circular references
and  refcounting, or you use explicit finalizers, or you can use
context managers. If you have arbitrary numbers of long-lived,
potentially self-referential objects that you can't control in any
other way, you're screwed - you're going to *have* to have a manual
destruction somewhere.


From george.sakkis at gmail.com  Tue Oct 16 18:33:20 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: 16 Oct 2007 15:33:20 -0700
Subject: ANN: magnitude 0.9.1
In-Reply-To: <ff27mh$n3v$1@news2.u-psud.fr>
References: <m2d4vf7dgw.fsf@antares.emea.hpqcorp.net>
	<ff27mh$n3v$1@news2.u-psud.fr>
Message-ID: <1192544637.359203.73260@v23g2000prn.googlegroups.com>

On Oct 16, 7:35 am, Laurent Pointal <laurent.poin... at limsi.fr> >

> How does it compare to the scalar module ?
> (seehttp://russp.us/scalar.htm)

or the Unum module (http://home.scarlet.be/be052320/Unum.html) ?



From cesar.gomes at gmail.com  Sun Oct 14 12:12:26 2007
From: cesar.gomes at gmail.com (Cesar G. Miguel)
Date: Sun, 14 Oct 2007 16:12:26 -0000
Subject: GLE-like python package
In-Reply-To: <47123bc8$0$4530$9b4e6d93@newsspool3.arcor-online.net>
References: <47123bc8$0$4530$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1192378346.740393.30680@e34g2000pro.googlegroups.com>

On Oct 14, 12:54 pm, Wildemar Wildenburger
<lasses_w... at klapptsowieso.net> wrote:
> Hello there,
>
> I'm exploring possibilities of using python as an alternative to Matlab.
> The obvious way to go seems to be matplotlib for plotting, but I do like
> GLE <URL:http://glx.sourceforge.net/> a lot. One reason is that with GLE
> you can also do diagrams, that is, descriptive pictures (like
> <URL:http://glx.sourceforge.net/examples/diagrams/index.html>)
>
> Is there anything similar for python?
>
> /W

I think this is what you're looking for:

http://pyx.sourceforge.net/

Cesar



From has.temp3 at virgin.net  Sat Oct 13 05:30:14 2007
From: has.temp3 at virgin.net (has)
Date: Sat, 13 Oct 2007 02:30:14 -0700
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192218795.540056.51700@k35g2000prh.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
	<1192199862.532118.306290@t8g2000prg.googlegroups.com>
	<1192218795.540056.51700@k35g2000prh.googlegroups.com>
Message-ID: <1192267814.707741.176570@z24g2000prh.googlegroups.com>

On 12 Oct, 20:53, jeremito <jerem... at gmail.com> wrote:

> I actually found NodeBox in my googling.  This seems to be a stand
> alone application.  I need to be able to convert my images to a movie
> from my code I wrote myself.

Some Mac-specific options:

- QuickTime Player is standard on OS X and its scripting interface
(which you can access from Python via appscript, and is fully usable
even in unpaid mode) includes an 'open image sequence' command. This
would be the simplest solution as long as you don't mind launching
another application to do the work.

- The Cocoa API's QTKit class (accessible via PyObjC) includes a -
addImage:forDuration:withAttributes: method that you could use to
build up a movie yourself.

- The Mac version of Python includes wrappers for a number of Carbon
APIs, including QuickTime. One for brave souls only; QT's C APIs are
notoriously complex, and I've no idea of the quality/reliability of
the Carbon.Qt wrapper (most of Python's Carbon wrappers haven't been
fully maintained since OS9 days).

HTH

has
--
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org



From malaclypse2 at gmail.com  Wed Oct 10 08:56:12 2007
From: malaclypse2 at gmail.com (Jerry Hill)
Date: Wed, 10 Oct 2007 08:56:12 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1192003886.866680.248600@v3g2000hsg.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
	<1191909945.520161.179960@o3g2000hsb.googlegroups.com>
	<mailman.6.1191913405.916.python-list@python.org>
	<1192003886.866680.248600@v3g2000hsg.googlegroups.com>
Message-ID: <16651e80710100556x4b1b402fnb0531e558a5cb39b@mail.gmail.com>

On 10/10/07, Sanjay <skpatel20 at gmail.com> wrote:
> Thanks a lot, Guys. The immediate step I think to take is having two
> combo boxes (dividing the data by '/'). Thanks for enormous response
> and the valuable suggestions!

The most elegant way I've seen to handle this in a graphical interface
(either a web app, or a full GUI), is to present the user with some
sort of map where they can click on their approximate location, and
then select the appropriate timezone from there.  I don't think that
the pytz module is set up to support that interface very well though.

-- 
Jerry


From besturk at gmail.com  Thu Oct 18 11:41:30 2007
From: besturk at gmail.com (Abandoned)
Date: Thu, 18 Oct 2007 08:41:30 -0700
Subject: Convert string to command..
In-Reply-To: <873aw830lc.fsf@mulj.homelinux.net>
References: <1192717399.296654.270350@k35g2000prh.googlegroups.com>
	<5npa5cFj5bvfU1@mid.uni-berlin.de>
	<1192720007.177063.194550@i13g2000prf.googlegroups.com>
	<5npbjbFio7g9U1@mid.uni-berlin.de>
	<1192720659.272611.320900@v29g2000prd.googlegroups.com>
	<873aw830lc.fsf@mulj.homelinux.net>
Message-ID: <1192722090.740342.60950@i13g2000prf.googlegroups.com>

On Oct 18, 6:26 pm, Hrvoje Niksic <hnik... at xemacs.org> wrote:
> Abandoned <best... at gmail.com> writes:
> > 173.000 dict elements and it tooks 2.2 seconds this very big time
> > for my project
>
> If you're generating the string from Python, use cPickle instead.
> Much faster:
>
> >>> import time
> >>> d = dict((i, i+1) for i in xrange(170000))
> >>> len(d)
> 170000
> >>> s=repr(d)
> >>> t0 = time.time(); d2 = eval(s); t1 = time.time()
> >>> t1-t0
> 1.5457899570465088
> >>> import cPickle as pickle
> >>> s = pickle.dumps(d, -1)
> >>> len(s)
> 1437693
> >>> t0 = time.time(); d2 = pickle.loads(s); t1 = time.time()
> >>> t1-t0
>
> 0.060307979583740234>>> len(d2)
>
> 170000
>
> That is 25x speedup.  Note that cPickle's format is binary.  Using the
> textual format makes for more readable pickles, but reduces the
> speedup to "only" 9.5x on my machine.
>
> P.S.
> Before someone says that using pickle is unsafe, remember that he is
> considering *eval* as the alternative.  :-)


import cPickle as pickle
a="{2:3,4:6,2:7}"
s=pickle.dumps(a, -1)
g=pickle.loads(s);
print g
'{2:3,4:6,2:7}'

Thank you very much for your answer but result is a string ??



From stef.mientki at gmail.com  Thu Oct 18 19:24:09 2007
From: stef.mientki at gmail.com (stef mientki)
Date: Fri, 19 Oct 2007 01:24:09 +0200
Subject: how to iterate over sequence and non-sequence ?
Message-ID: <4717EB19.6050908@gmail.com>

hello,

I generate dynamically a sequence of values,
but this "sequence" could also have length 1 or even length 0.

So I get some line in the form of:
      line = '(2,3,4)'
      line = ''
      line = '(2)'
(in fact these are not constant numbers, but all kind of integer 
variables, coming from all over the program, selected from a tree, that 
shows all "reachable" variables)

So in fact I get the value from an exec statement, like this
      exec 'signals = ' + line

Now I want to iterate over "signals", which works perfect if there are 2 
or more signals,
but it fails when I have none or just 1 signal.
    for value in signals :
        do something

As this meant for real-time signals, I want it fast, so (I think) I 
can't afford extensive testing.

Any smart solution there ?

thanks,
Stef Mientki


From bblais at bryant.edu  Sun Oct 21 13:33:00 2007
From: bblais at bryant.edu (Brian Blais)
Date: Sun, 21 Oct 2007 13:33:00 -0400
Subject: compiler module bug?
In-Reply-To: <op.t0j4vshfx6zn5v@a98gizw.cpe.telecentro.net.ar>
References: <7DEB606B-7856-4140-ADA9-4083EC22D380@bryant.edu>
	<op.t0j4vshfx6zn5v@a98gizw.cpe.telecentro.net.ar>
Message-ID: <01E5EB0B-6904-438C-B9DD-B27310C0381D@bryant.edu>

On Oct 21, 2007, at Oct 21:1:15 PM, Gabriel Genellina wrote:

> En Sun, 21 Oct 2007 13:36:46 -0300, Brian Blais <bblais at bryant.edu>
> escribi?:
>
>> I am experiencing a problem with the compiler module.  Is this a bug,
>> or am I doing something wrong?
>
> I think it's a well-known fact...
>
>> it seems like a comment at the end breaks the parse command, but not
>> parseFile.  Is this reproducible by others?
>
> The comment itself is not a problem; but the last line in the  
> source must
> end in a newline.
> See the py_compile/compileall modules as an example.


I didn't see anything in that module which mentions this issue  
(perhaps I missed it).  however, if the documentation states:

parseFile(
path)
Return an abstract syntax tree for the Python source code in the file  
specified by path. It is equivalent to parse(open(path).read()).

then, even if it is known problem, the docs are wrong.  the two  
(parseFile(path) and parse(open(path).read())) are *not* the same:  
one can handle a file which doesn't end in a newline, another one  
can't handle the same file.

Can one hack it like:

     filestr=open(filename).read()
     filestr+="\n"

before going to parse, or will that give problems?

		thanks,

			bb


-- 
Brian Blais
bblais at bryant.edu
http://web.bryant.edu/~bblais



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071021/3d1fceec/attachment.html>

From kalin at el.net  Mon Oct  8 13:54:06 2007
From: kalin at el.net (kalin mintchev)
Date: Mon, 8 Oct 2007 13:54:06 -0400 (EDT)
Subject: mailman.bounces
Message-ID: <64448.66.93.88.154.1191866046.squirrel@mail.el.net>


hi all..

i'm a bit confused by the bounces behavior of mailman. the idea is that
each address from which a bounce comes back should be immediately removed
from the list. right now they are not. or testing i'm purposely putting
addresses that do not exist. in the mail log i get:

stat=Deferred: Connection timed out with dddddd.com

is that considered 'soft' or 'hard' bounce severity. is it considered
bounce at all?

here are the relevant settings:

Should Mailman perform automatic bounce processing?  => Yes

The maximum member bounce score before the member's subscription is
disabled. This value can be a floating point number. => 0.0  (tested 1.0
and 0.1 also)

The number of days after which a member's bounce information is discarded,
if no new bounces have been received in the interim. This value must be an
integer. => 7

How many Your Membership Is Disabled warnings a disabled member should get
before their address is removed from the mailing list. Set to 0 to
immediately remove an address from the list once their bounce score
exceeds the threshold. This value must be an integer.  => 0


thanks....



From __peter__ at web.de  Fri Oct 12 09:25:28 2007
From: __peter__ at web.de (Peter Otten)
Date: Fri, 12 Oct 2007 15:25:28 +0200
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
Message-ID: <fensk8$la6$03$1@news.t-online.com>

Diez B. Roggisch wrote:

> Florian Lindner wrote:

>> can I determine somehow if the iteration on a list of values is the
>> last iteration?

>  def last_iter(iterable):
>     it = iter(iterable)
>     buffer = [it.next()]
>     for i in it:
>         buffer.append(i)
>         old, buffer = buffer[0], buffer[1:]
>         yield False, old
>     yield True, buffer[0]

This can be simplified a bit since you never have to remember more than on
item:

>>> def mark_last(items):
...     items = iter(items)
...     last = items.next()
...     for item in items:
...             yield False, last
...             last = item
...     yield True, last
...
>>> list(mark_last([]))
[]
>>> list(mark_last([1]))
[(True, 1)]
>>> list(mark_last([1,2]))
[(False, 1), (True, 2)]

Peter


From steve at REMOVE-THIS-cybersource.com.au  Mon Oct  8 09:26:31 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Mon, 08 Oct 2007 13:26:31 -0000
Subject: Don't use __slots__ (was Re: Problem of Readability of Python)
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d@comcast.com>
	<fecbjj$5rn$1@panix3.panix.com> <13gk96sks58ad9f@corp.supernews.com>
	<5muoroFfdr86U2@mid.uni-berlin.de>
Message-ID: <13gkc07l4ce47ea@corp.supernews.com>

On Mon, 08 Oct 2007 15:15:36 +0200, Diez B. Roggisch wrote:

>> Well, I've read the thread, and I've read the thread it links to, and
>> for the life of me I'm still no clearer as to why __slots__ shouldn't
>> be used except that:
>> 
>> 1 Aahz and Guido say __slots__ are teh suxxor;
>> 
>> 2 rumour (?) has it that __slots__ won't make it into Python 3.0;
>> 
>> 3 inheritance from classes using __slots__ doesn't inherit the slot-
>> nature of the superclass.
>> 
>> 
>> Point 1 is never to be lightly dismissed, but on the other hand Guido
>> doesn't like reduce(), and I'm allergic to "Cos I Said So" arguments.
>> 
>> History is full of things which were invented for one purpose being
>> used for something else. So, that being the case, suppose I accept that
>> using __slots__ is not the best way of solving the problem, and that
>> people of the skill and experience of Guido and Aahz will roll their
>> eyes and snicker at me.
>> 
>> But is there actually anything *harmful* that can happen if I use
>> __slots__?
> 
> Point 3 clearly is harmful. 

No, it is DIFFERENT, not harmful. At worst, it's a "gotcha" -- a really 
well-documented gotcha.


> As is the fact that __slots__ gives you
> troubles if you e.g. pass objects to code that tries to set arbitrary
> attributes on an object.

You mean like this?

>>> x = 1
>>> x.label = "foo"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'int' object has no attribute 'label'

I guess that means ints and floats and strings and tuples and lists are 
all harmful too, yes?



> The question is: what does a slot buy you for this kind of problem?

Simplicity and explicitness.



-- 
Steven.


From duncan.booth at invalid.invalid  Tue Oct 30 13:43:48 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 30 Oct 2007 17:43:48 GMT
Subject: Built-in functions and keyword arguments
References: <1193665924.886459.20710@v3g2000hsg.googlegroups.com>
	<4725ec3a$0$6623$426a74cc@news.free.fr>
	<Xns99D893230B22Cduncanbooth@127.0.0.1>
	<mailman.597.1193681389.13605.python-list@python.org>
	<Xns99D8BEA87A5Aduncanbooth@127.0.0.1>
	<mailman.602.1193691547.13605.python-list@python.org>
Message-ID: <Xns99D8DA24822D1duncanbooth@127.0.0.1>

"J. Clifford Dyer" <jcd at sdf.lonestar.org> wrote:

>> How do you interpret:
>> 
>> >>> help(__import__)
>> Help on built-in function __import__ in module __builtin__:
>> 
>> __import__(...)
>>     __import__(name, globals={}, locals={}, fromlist=[], level=-1) ->
>> module
>> ...
>> >>> help(int)
>> Help on class int in module __builtin__:
>> 
>> class int(object)
>>  |  int(x[, base]) -> integer
>> ...
>> 
>> Can you find any case (other than a single parameter identified as 
>> 'object') where you can interpret the help string as telling you the
>> types of the parameters?
> 
> OK, good point.  Perhaps it's not so specific as the type, but
> certainly the use of name and x in the docstrings listed above only
> imply something about the character of the argument, not the name of
> the argument itself, which is what I was trying to get at.  Help
> documentation for keyword arguments usually shows the argument being
> used as a keyword, like the example from __import__ above. 

Usually, but not in the second example I gave:

>>> int(base=12, x='42')
50


From hniksic at xemacs.org  Thu Oct 18 09:07:22 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 18 Oct 2007 15:07:22 +0200
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
	<87myug3hhv.fsf@mulj.homelinux.net>
	<1192708630.322399.234790@t8g2000prg.googlegroups.com>
Message-ID: <87abqg371x.fsf@mulj.homelinux.net>

Paul Hankin <paul.hankin at gmail.com> writes:

> Not to me: I can never remember which of a.append and a.extend is
> which.

Interesting, with me it's the other way around.  Maybe it's because I
used Python before extend was available.

> Falling back to a = a + b is exactly what you want.

Not if you want to mutate the original object, possibly referenced
from elsewhere.


From rhc2 at twcny.rr.com  Tue Oct 16 19:19:08 2007
From: rhc2 at twcny.rr.com (Dick Crepeau)
Date: Tue, 16 Oct 2007 19:19:08 -0400
Subject: Matplotlib axis control problem
Message-ID: <471546EC.1030308@twcny.rr.com>

I would like to control the y axis of a plot.  The following code does 
exactly what I want it to!  On my linux computer it sets the y axis 
limits to 18.0 minimum, 58.0 maximum, plots some points on y=x, provides 
ticks at 20,30,40,50 and horizontal tick lines that intersect the 
plotted points.

All very good, but if I change the upper y axis limit to 54.0, 
(ax.set_ylim(18.0, 54.0)), it fails, plotting the ticks at some strange 
values.

Ultimately I want to uncomment the set scale to log and use this to 
label semi log plots that by default are only labeled on powers of 10.  
My data falls within one decade so I don't want the full 10-100 limits.

I'm rather new at matplotlib so if I'm making trivial errors please feel 
free to criticize.

Thanks
Dick C

from pylab import *
from matplotlib.ticker import MaxNLocator

x=[10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0]
y=x
figure(1)
ax=subplot(111)
ax.plot(array(x), array(y), 'x')
#ax.set_yscale('log')
ax.set_ylim(18.0, 58.0)
ax.yaxis.set_major_locator(MaxNLocator(5))
ax.set_yticklabels(('10', '20','30','40','50','60','70','80','90','100'))
ax.yaxis.grid(True, linestyle='-', which='major')
show()




From chlo.prog at gmail.com  Thu Oct  4 14:40:04 2007
From: chlo.prog at gmail.com (rc)
Date: Thu, 04 Oct 2007 18:40:04 -0000
Subject: win32com COMAdminCatalogObject Value method
In-Reply-To: <mailman.1426.1191384695.2658.python-list@python.org>
References: <1191247471.992094.203630@n39g2000hsh.googlegroups.com>
	<1191274799_4541@sp12lax.superfeed.net>
	<1191337929.043023.115290@r29g2000hsg.googlegroups.com>
	<mailman.1426.1191384695.2658.python-list@python.org>
Message-ID: <1191523204.485148.158730@o80g2000hse.googlegroups.com>

On Oct 2, 11:11 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Tue, 02 Oct 2007 12:12:09 -0300, rc <chlo.p... at gmail.com> escribi?:
>
> >> Try objCOMAdminCatalogObject.SetValue("ID", AppID).
> > When I try that I get exception:
> > AttributeError: Add.SetValue
>
> I think you would get more help asking in python-wi... at python.org
>
> --
> Gabriel Genellina

Thank you, python-win32 was able to help.
makepy needed to be run on the COM object allowing SetValue to be
called:
win32com.client.gencache.EnsureModule(pywintypes.IID('{F618C513-
DFB8-11D1-A2CF-00805FC79235}'), 0x0, 1, 0)



From lasses_weil at klapptsowieso.net  Sun Oct  7 11:26:03 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Sun, 07 Oct 2007 17:26:03 +0200
Subject: Override 'and' and 'or'
In-Reply-To: <1191768523.821775.178080@50g2000hsm.googlegroups.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<13ghqmkl33t3ra4@corp.supernews.com>
	<1191768523.821775.178080@50g2000hsm.googlegroups.com>
Message-ID: <4708fa8b$0$4527$9b4e6d93@newsspool3.arcor-online.net>

Dekker wrote:
> Well... I have to live with the (binary) __and__, __or__ option and
> the user has to write:
> 
> SqlValueInt(4) & SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
> SqlValueInt(5))
> 
> Thanks for your input, but __nonzero__ is not of any help in this
> case... I want to abuse the "magic" functions for some transformations
> and not some evaluation.
> 
Then again, you could always write a function that does this. I know, I 
know ...

/W


From simon at brunningonline.net  Tue Oct 23 15:09:31 2007
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 23 Oct 2007 20:09:31 +0100
Subject: New module for method level access modifiers
In-Reply-To: <471e43ad$0$21451$426a34cc@news.free.fr>
References: <1193159299.190539.136450@z24g2000prh.googlegroups.com>
	<471e43ad$0$21451$426a34cc@news.free.fr>
Message-ID: <8c7f10c60710231209tcd31911wd37873859e98c95@mail.gmail.com>

On 10/23/07, Bruno Desthuilliers
<bdesth.quelquechose at free.quelquepart.fr> wrote:
> > Specifically, I have created 3 decorators named public, private and
> > protected.
>
> Lord have mercy.

+1 QOTW.

-- 
Cheers,
Simon B.
simon at brunningonline.net
http://www.brunningonline.net/simon/blog/
GTalk: simon.brunning | MSN: small_values | Yahoo: smallvalues


From jo at durchholz.org  Sun Oct 21 13:34:56 2007
From: jo at durchholz.org (Joachim Durchholz)
Date: Sun, 21 Oct 2007 19:34:56 +0200
Subject: Distributed RVS, Darcs, tech love
In-Reply-To: <tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
References: <1192850894.310464.89070@e9g2000prf.googlegroups.com>
	<1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
Message-ID: <ffg2jk$mj$1@online.de>

Lew schrieb:
> I am afraid that your conclusion is quite mistaken.  Knuth is, if 
> anything, a huge success in the field of software engineering, whether 
> you rate it as making a contribution to the art, or as being paid to 
> perform the art.

Well, sort of.
Some of the code given is unreadable. (He obviously didn't take the 
"structured programming" thing to heart.)
Worse, some of the code given is inscrutable, and remains unexplained 
(e.g. the code for the spectral test algorithm).
Whole classes of algorithms were omitted. This is probably no fault of 
Knuth as a programmer, but simply a field that's moving faster than a 
single person can keep up with.

These are small detractions from a large overall contribution.
In particular, I find llothars characterization of TeX wrong: it is one 
of the least buggy typesetting programs ever written (not a small feat), 
and it *still* produces output that is as least as good as what other 
programs do, and in fact better than the vast majority.
It also has downsides, most notably the markup language is pure horror.

TeX's markup language is a dead end.
TeX's algorithm isn't. Actually it has been extracted from the software 
and is available as a functional program, waiting to be embedded into a 
typesetting system with more modern qualities.

Regards,
Jo


From buzzard at urubu.freeserve.co.uk  Tue Oct 23 21:05:24 2007
From: buzzard at urubu.freeserve.co.uk (Duncan Smith)
Date: Wed, 24 Oct 2007 02:05:24 +0100
Subject: Using arrays in Python - problems.
In-Reply-To: <1193181270.396191.291130@i38g2000prf.googlegroups.com>
References: <mailman.392.1193179875.13605.python-list@python.org>
	<1193181270.396191.291130@i38g2000prf.googlegroups.com>
Message-ID: <ffm5rp$22j6$1@energise.enta.net>

marek.rocki at wp.pl wrote:
> attackwarningred napisa (a):
> 
> 
>>The array F(n) is dynamically allocated earlier on and is sized with
>>reference to shotcount, the number of iterations the model performs. The
>>problem is I can't get something like this to run in Python using numpy,
>>and for the size of the array to be sized dynamically with reference to
>>the variable shotcount. I acknowledge that my knowledge of Python is
>>still really basic (I only started learning it a few days ago) and I'm
>>trying to get out of the Fortran programming mindset but I'm stuck and
>>don't seem to be able to get any further. If anyone could help I'd be
>>really grateful. Thanks very much in advance.
> 
> 
> Hello. If you want your array to be dynamically resized at every loop
> iteration, that might be quite inefficient. How about initialising it
> with a required size?
> 
> F = numpy.array([0]*shotcount)
> for n in xrange(shotcount):
>         F[n] = random.lognormvariate(F_mean, F_sd)
> 
> Hope that helps,
> Marek
> 

or,

F = numpy.random.lognormal(F_mean, F_sd, shotcount)

(assuming F_mean, F_sd are the parameters of the distribution, rather
than the actual mean and standard deviation).

Duncan


From rcdailey at gmail.com  Wed Oct 10 20:00:09 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Wed, 10 Oct 2007 19:00:09 -0500
Subject: Problems with struct.pack()
Message-ID: <496954360710101700p4865110o754a469fc6c42404@mail.gmail.com>

Hi,

I have opened a unicode file for writing:

import codecs
file = codecs.open( "somefile.dat", "wb", "utf-16" )

and I attempt to do this:

file.write( struct.pack( "I", 5000 ) )

However, this won't work because the encoding of the string returned by
"pack" isn't unicode. I'm a bit confused right now as to how I can get this
to work. I can't allow the unicode-ness of the file interfere with the
actual order of the bytes that pack() is returning (In other words, don't
pack NULL characters in there)

Thanks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/06891b81/attachment.html>

From carsten at uniqsys.com  Thu Oct  4 12:08:42 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Thu, 04 Oct 2007 12:08:42 -0400
Subject: racism kontrol
In-Reply-To: <470506fe$0$4518$9b4e6d93@newsspool3.arcor-online.net>
References: <1191430790.537383.115880@r29g2000hsg.googlegroups.com>
	<1191435296.523842.160230@g4g2000hsf.googlegroups.com>
	<4703f631$0$7692$9b4e6d93@newsspool2.arcor-online.net>
	<mailman.1481.1191444294.2658.python-list@python.org>
	<47041be6$0$30382$9b4e6d93@newsspool4.arcor-online.net>
	<mailman.1496.1191488830.2658.python-list@python.org>
	<470506fe$0$4518$9b4e6d93@newsspool3.arcor-online.net>
Message-ID: <1191514122.3373.42.camel@dot.uniqsys.com>

On Thu, 2007-10-04 at 17:30 +0200, Wildemar Wildenburger wrote:
> Sidenote: Its funny that everybody calls the Dutch "Dutch" (when 
> speaking English), which pretty much is the word "deutsch", which, guess 
> what, means "German" (cf. Pennsylvania Dutch). That has always baffled 
> me --- do Dutch people refer to themselves as "Dutch" when speaking 
> dutch? The term for "Dutch" is "Nederlands" or "Hollands", isn't it?

It is fairly common that people are referred to by others by a different
name than what they call themselves in their native language. Germans
call themselves Deutsch, Chinese call themselves Zhong-guo-ren (I
think), Iroquois call themselves Haudenosaunee, and so on.

The reason for this, I'm guessing, is that visitors and/or invaders
either didn't bother to ask what the people call themselves, or they
misunderstood the answer, or they can't pronounce the answer, or they
didn't ask an authoritative source, or a combination of the above. (For
example, if you ask my neighbor what my name is, he might say "The guy
that doesn't mow his lawn often enough.")

Anyway, I believe this thread has gone on far enough off-topic...

-- 
Carsten Haese
http://informixdb.sourceforge.net




From daniel_nolan at msn.com  Mon Oct 29 22:02:42 2007
From: daniel_nolan at msn.com (daniel)
Date: Mon, 29 Oct 2007 19:02:42 -0700
Subject: trouble with PAMIE
Message-ID: <1193709762.167424.38140@z9g2000hsf.googlegroups.com>

I'm trying to use PAMIE to automate some web browsing. My problem is
with the buttonClick() method; it seems to work unless the button is
supposed to open a new window. Specifically, the button is supposed to
open a PDF Preview in a new window. Any ideas?

Daniel



From mahs at telcopartners.com  Wed Oct  3 14:21:59 2007
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 03 Oct 2007 11:21:59 -0700
Subject: module confusion
In-Reply-To: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
Message-ID: <fe0mk7$ju9$1@sea.gmane.org>

+1 Subject line of the week (SLOTW)

rjcarr wrote:
> So my question is ... why are they [os.path and logging.handlers] different?

[A] wrote:
> Because you misspelled it. First, do a dir() on logging:

[B] wrote:
> No, he didn't... OP: logging is a package and logging.handlers is one module 
> in the package... os.path is a particularly weird case...

[C] wrote:
> You can't import packages, only modules.

[D] wrote:
> Oh come on, this is unnecessary nitpicking.

[E] wrote:
 > You *can* import a package, and a package is just a *little* different from a
 > module

[B] wrote:
> Yes, but os.path is also module. That's why I said it was a weird case.

[C] wrote:
> You can't have modules within modules. os.path isn't an exception...It's just
>  a variable that happens to point to the posixpath module.

[F] wrote:
> There's no "pointing" going on. It's another name bound to the same object,
> of equal status to the 'posixpath' name.

[G] wrote:
> a module is just an object, that can of course be an attribute of another
> module object

[H] wrote:
> os is not a package; os.path is set when the os module is imported

[C] wrote:
> You're right. I was misremembering the behaviour of PyCrypto

[J] wrote:
> In Matlab you can use function dec2bin, hex2dec, dec2hex bin2dec functions to
> convert decimal to binary and heximal etc.

[B] wrote:
> I believe that is precisely what I was saying.


with apologies to all concerned :-)

Michael







From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Mon Oct  1 09:50:59 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 15:50:59 +0200
Subject: Select as dictionary...
In-Reply-To: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
References: <1191245527.228745.17100@r29g2000hsg.googlegroups.com>
Message-ID: <4700fb42$0$18288$426a74cc@news.free.fr>

Besturk.Net Admin a ?crit :
> Hi..
> I am using python with postgresql.
> And i have a query :
> 
> aia.execute("SELECT id, w from list")
> links=aia.fetchall()
> print links
> 
> and result
> [(1, 5), (2,5).......] (2 million result)
> 
> I want to see this result directly as a dictionary:
> 
> {1: 5, 2: 5 .....}
> 
> How do i select in this format ?

IIRC, postgres' db-api connector (well, at least one of them - I don't 
know which one you're using) has a DictCursor. You should find all you 
want to know in the relevant doc.

FWIW:
http://www.initd.org/tracker/psycopg/wiki/PsycopgTwoFaq

HTH


From tnelson at onresolve.com  Mon Oct 22 06:25:30 2007
From: tnelson at onresolve.com (Trent Nelson)
Date: Mon, 22 Oct 2007 12:25:30 +0200
Subject: calling a function from string
In-Reply-To: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
References: <1193043242.235837.86590@e34g2000pro.googlegroups.com>
Message-ID: <AB1BB4CF81B9214682079EB55A7125ED02552DDF@mapibe05.exchange.xchg>

> i have a function that I could like to call, but to make it more
> dynamic I am constructing a string first that could equivalent to the
> name of the function I wish to call. how could I do that? the string
> could might include name of the module.
> 
> for example
> 
> a_string = 'datetime.' + 'today()'
> 
> how could I call a_string as function?

Use 'eval' in one of the following fashions:

a_string_1 = 'datetime.' + 'today'
a_string_2 = 'datetime.' + 'today()'

eval(a_string_1)()
eval(a_string_2)


	Trent.


From python.list at tim.thechases.com  Thu Oct 25 12:01:24 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 25 Oct 2007 11:01:24 -0500
Subject: Delete all not allowed characters..
In-Reply-To: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
Message-ID: <4720BDD4.60507@tim.thechases.com>

> I want to delete all now allowed characters in my text.
> I use this function:
> 
> def clear(s1=""):
>     if s1:
>         allowed =
> [u'+',u'0',u'1',u'2',u'3',u'4',u'5',u'6',u'7',u'8',u'9',u' ', u'?',
> u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', 'A',
> 'C', 'B', 'E', 'D', 'G', 'F', 'I', 'H', 'K', 'J', 'M', 'L', 'O', 'N',
> 'Q', 'P', 'S', 'R', 'U', 'T', 'W', 'V', 'Y', 'X', 'Z', 'a', 'c', 'b',
> 'e', 'd', 'g', 'f', 'i', 'h', 'k', 'j', 'm', 'l', 'o', 'n', 'q', 'p',
> 's', 'r', 'u', 't', 'w', 'v', 'y', 'x', 'z']
>         s1 = "".join(ch for ch in s1 if ch in allowed)
>         return s1
> 
> ....And my problem this function replace the character to "" but i
> want to " "
> for example:
> input: Exam%^^ple
> output: Exam   ple
> I want to this output but in my code output "Example"
> How can i do quickly because the text is very long..

Any reason your alphabet is oddly entered?

You can speed it up by using a set.  You can also tweak your join 
to choose a space if the letter isn't one of your allowed letters:

   import string
   allowed = set(
     string.letters +
     string.digits +
     ' +' +
     u'????????????')
   def clear(s):
     return "".join(
       letter in allowed and letter or " "
       for letter in s)

In Python 2.5, there's a ternary operator syntax something like 
the following (which I can't test, as I'm not at a PC with 2.5 
installed)

   def clear(s):
     return "".join(
       letter
         if letter in allowed
         else " "
       for letter in s)

which some find more readable...I don't particularly care for 
either syntax.  The latter is 2.5-specific and makes more sense, 
but still isn't as readable as I would have liked; while the 
former works versions of python back to at least 2.2 which I 
still have access to, and is a well documented idiom/hack.

-tkc






From steve at REMOVE-THIS-cybersource.com.au  Sat Oct 27 10:07:23 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sat, 27 Oct 2007 14:07:23 -0000
Subject: simple question on dictionary usage
References: <ffuerv$12ih$1@stationair.kjsl.com>
Message-ID: <13i6hgrqjs22n7b@corp.supernews.com>

On Sat, 27 Oct 2007 04:29:51 +0000, Frank Stutzman wrote:

> My apologies in advance, I'm new to python
> 
> Say, I have a dictionary that looks like this:
> 
> record={'BAT': '14.4', 'USD': '24', 'DIF': '45', 'OAT': '16',
>         'FF': '3.9', 'C3': '343', 'E4': '1157', 'C1': '339', 'E6':
>         '1182', 'RPM': '996', 'C6': '311', 'C5': '300', 'C4': '349',
>         'CLD': '0', 'E5': '1148', 'C2': '329', 'MAP': '15', 'OIL':
>         '167', 'HP': '19', 'E1': '1137', 'MARK': '', 'E3': '1163',
>         'TIME': '15:43:54', 'E2': '1169'}
> 
> From this dictionary I would like to create another dictionary calld
> 'egt') that has all of the keys that start with the letter 'E'.  In
> otherwords it should look like this:
> 
> egt = {'E6': '1182','E1': '1137','E4': '1157','E5': '1148',
>        'E2': '1169','E3': '1163'}


With my tongue firmly in cheek, I present the following obfuscated 
solution:

eval("{" + reduce(lambda x,y: y+', '+x, [mo.group(1) for mo in __import__
('re').finditer(r"('E.*?'\s*:\s*'.*?'),?", str(record))], "") + "}")


The above should be a single line.


eval(), reduce(), lambda, string concatenation in the least efficient way 
possible, regexes... could it get any worse than this?



-- 
Steven.


From fantus at poczta.fm  Sun Oct  7 17:51:27 2007
From: fantus at poczta.fm (Fantus)
Date: Sun, 07 Oct 2007 23:51:27 +0200
Subject: tinyp2p - trying to get it to work
Message-ID: <febk9e$gfe$1@nemesis.news.tpi.pl>

Hello

I am doing a small research and I found this:

http://www.freedom-to-tinker.com/tinyp2p.html

I tried to get it to work. So far I managed to run it as a server using 
a command:

 > python tinyp2p.py haslo server 10.10.10.1 2233

It starts listening on a given port so I assume it works fine (I can 
telnet from other machine to 10.10.10.1 on 2233)

Now when I try to run a client using following command:

 > python tinyp2p.py haslo client http://10.10.10.1:2233 koniki

it gives me some strange output and erros:


Traceback (most recent call last):
   File "tinyp2p.py", line 14, in ?
     for url in pxy(ar[3]).f(pw(ar[3]),0,[]):
   File "/usr/lib/python2.4/xmlrpclib.py", line 1096, in __call__
     return self.__send(self.__name, args)
   File "/usr/lib/python2.4/xmlrpclib.py", line 1383, in __request
     verbose=self.__verbose
   File "/usr/lib/python2.4/xmlrpclib.py", line 1147, in request
     return self._parse_response(h.getfile(), sock)
   File "/usr/lib/python2.4/xmlrpclib.py", line 1286, in _parse_response
     return u.close()
   File "/usr/lib/python2.4/xmlrpclib.py", line 744, in close
     raise Fault(**self._stack[0])
xmlrpclib.Fault: <Fault 1: 'exceptions.TypeError:coercing to Unicode: 
need string or buffer, list found'>



Can anybody help me to solve this? Please. I did browse google but found 
nothing.

Regards
Fantus.


From caduado at gmail.com  Sun Oct 14 03:18:57 2007
From: caduado at gmail.com (Carlos Leite)
Date: Sun, 14 Oct 2007 04:18:57 -0300
Subject: Pymedia audio analyzer
Message-ID: <a772d28e0710140018o14afe799tcfd27d32ce9a2469@mail.gmail.com>

Is there any other option to analyze audio frequencies?

Or

Any here try to use pymedia to a simple audio FingerPrint.

A cant understand  what the information the asBands() really giveme.
The Docs, say that asBands() return a List of tupples  grouped by
frquenciy, and the first two values are frquency limits. But I dont
thonk so ! Its not seems to be correct!

THis is part of my output to an audio file of 2 seconds and a 1000Hz frequency
And the code is below
But I read a lot, search .. and I still cant understand what this
tuples really means.

Thanks oin advance

190.283203125;0.244085595012
211.42578125;1.08019864559
253.7109375;3.9267279307
317.138671875;9.92583847046
359.423828125;30.9667332967
422.8515625;2023.64868164
507.421875;1721.98303223
591.9921875;45.5271911621
697.705078125;6.53225898743
824.560546875;2.08980056218
972.55859375;0.794676959515
1141.69921875;0.362428373761
1331.98242188;0.29334748875
1564.55078125;0.218693238038
1839.40429688;0.278315830231
2156.54296875;0.146333972613
2537.109375;0.26632910683
2981.10351563;0.496793937683
3509.66796875;0.742335747028
4122.80273438;0.619799894445
4841.65039063;0.941718482971
5687.35351563;0.703689981014
6681.0546875;1.38942857222
7843.89648438;1.78449742244
9218.1640625;3.77672335976
190.283203125;0.194098889828
211.42578125;1.05994915962
253.7109375;3.90520095825
317.138671875;10.0715675354
359.423828125;31.0263417562
422.8515625;2023.83581543
507.421875;1721.99328613
591.9921875;45.4988830566
697.705078125;6.51365725199
824.560546875;2.10594912938
972.55859375;0.806965708733
1141.69921875;0.369390010834
1331.98242188;0.381403446198
1564.55078125;0.279652008644
1839.40429688;0.307544994354
2156.54296875;0.252535131243
2537.109375;0.34709642047
2981.10351563;0.604796524048
3509.66796875;0.553077500442
4122.80273438;1.07670492284
4841.65039063;1.21294984818
5687.35351563;1.33566446507
6681.0546875;1.47083462802
7843.89648438;2.5437119704
9218.1640625;4.14210630718
import pymedia.audio.sound as sound
import pymedia.audio.acodec as acodec
import sys

freqs=''
def playFile(file_name):
    #Leitura do arquivo
    file_extension = file_name.split('.' )[ -1 ].lower()
    parms = {'id': acodec.getCodecID(file_extension), 'ext': file_extension}
    decoder = acodec.Decoder(parms)
    f = open(file_name, 'rb')
    s = f.read(8192)
    r = decoder.decode(s)
    sampleFreqs= []
    #snd = sound.Output(r.sample_rate, r.channels, sound.AFMT_S16_LE)
    SAMPLES= 500
    NUM_FREQS= 12
    BANDS= 25
    resampler= sound.Resampler( (r.sample_rate,r.channels), (r.sample_rate,1) )
    analyzer= sound.SpectrAnalyzer( 1, SAMPLES, 512 )
    arqb = open('saida_bands.txt' , 'w')
    arqf = open('saida_freqs.txt', 'w')
    arqb.write('%s \n' %(f.name))
    contador = 0
    while len(s)> 0:
        contador = contador + 1
        if r:
            #snd.play(r.data)
            s = f.read(512)
            r = decoder.decode(s)

            snd= sound.Output( r.sample_rate, r.channels, sound.AFMT_S16_LE )
            s1= resampler.resample( r.data )
            bTmp= analyzer.asBands( BANDS, s1 )
            sampleFreqs.append( ( snd.getPosition()+ snd.getLeft(), bTmp ) )
            fTmp= analyzer.asFrequencies(r.data)
            #print (bTmp )
            for k in bTmp:
                for l in k:
                    #print l
                    arqb.write('%s;%s \n' % (l[0].__str__(),l[1].__str__(),))

            arqb.write('Frame: %s \n' % (contador.__str__()))
            arqf.write ('Leitura: %s \n ' % (contador.__str__()))
            arqf.write ('Freq: %s \n ' % (fTmp.__str__()))
    arqb.write('LOOPS: %s \n' % (contador.__str__()))
    arqb.close()
    arqf.close()
if __name__ == "__main__":
    file_name = sys.argv[1]
    playFile(file_name)

-- 
Carlos Leite
www.znc.com.br


From michele.simionato at gmail.com  Sun Oct  7 13:34:51 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sun, 07 Oct 2007 17:34:51 -0000
Subject: weakrefs and bound methods
In-Reply-To: <13gi4vrfqhrs48d@corp.supernews.com>
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
	<13gi4vrfqhrs48d@corp.supernews.com>
Message-ID: <1191778491.759156.239920@o80g2000hse.googlegroups.com>

On Oct 7, 1:14 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Sun, 07 Oct 2007 16:38:23 +0000, Michele Simionato wrote:
> > On Oct 7, 12:26 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
>
> >> Drop all those `__del__()` methods as they prevent the garbage
> >> collector from collecting "cycles".
>
> > I fully agree and I will add that __del__ methods are always a bad idea.
>
> Always?
>
> I recently wrote a bit of code where I needed to check that releasing the
> first object in a tree-like structure would allow Python to garbage
> collect all the other objects in a tree. I thought it would, but I wanted
> to be sure ("don't guess, test"), so I wrote a simple class, gave it a
> __del__ method that just printed self, inserted them in the tree, and
> then deleted the first one.
>
> Worked like a charm.
>
> Without __del__, what should I have done to test that my code was
> deleting objects and not leaking memory?
>
> What should I do when my objects need to perform some special processing
> when they are freed, if I shouldn't use __del__?

The best thing is to use explicit resource management,
for instance with a try .. finally or with the "with" statement
in Python 2.5. The next best thing is to use weak references.
I have some code for various experiments with wearefs I did
some time ago, here it is:

import itertools, weakref, sys, gc

reference_list = [] # cannot be a set, you would lose references
resource_counter = itertools.count(1)

def resource(before_closing_callback=None,
after_closing_callback=None):
    private = '_resource_%s' % resource_counter.next()

    def get(self):
        return getattr(self, private)

    def set(self, resource):
        setattr(self, private, resource)
        def close(ref):
            if before_closing_callback:
                before_closing_callback(resource)
            resource.close()
            if after_closing_callback:
                after_closing_callback(resource)
            reference_list.remove(ref)
        reference_list.append(weakref.ref(self, close))

    return property(get, set)

class FakeResource(object):
    def __init__(self, name):
        print 'opening resource %s' % name
        self.name = name
    def close(self):
        print 'closing resource %s' % self.name
    def __repr__(self):
        return '<FakeResource %r>' % self.name

class Example(object):
    def __init__(self):
        self.resource1 = FakeResource('r1')
        self.resource2 = FakeResource('r2')
    def __del__(self):
        print '**************'
        self.resource1.close()
        self.resource2.close()

def warn_before_closing(res):
    sys.stdout.write('going to close %s\n' % res)

class Example2(object):

    resource1 = resource(warn_before_closing)
    resource2 = resource()

    def __init__(self):
        self.resource1 = FakeResource('r1')
        self.resource2 = FakeResource('r2')


gc.set_debug(gc.DEBUG_LEAK)

#e = Example()
e = Example2()
e.e = e
del e
print reference_list





From arkanes at gmail.com  Wed Oct 31 16:50:25 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 31 Oct 2007 15:50:25 -0500
Subject: 3 number and dot..
In-Reply-To: <1193862276.144648.43850@22g2000hsm.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
	<mailman.708.1193861946.13605.python-list@python.org>
	<1193862276.144648.43850@22g2000hsm.googlegroups.com>
Message-ID: <4866bea60710311350t2687fff9wba99af9bdabb74a9@mail.gmail.com>

On Oct 31, 2007 3:24 PM, Abandoned <besturk at gmail.com> wrote:
> On Oct 31, 10:18 pm, Paul McNett <p... at ulmcnett.com> wrote:
> > Abandoned wrote:
> > > Hi..
> > > I want to do this:
> > > for examle:
> > > 12332321 ==> 12.332.321
> >
> > > How can i do?
> >
> > Assuming that the dots are always in the 3rd and 7th position in the string:
> >
> > def conv(s, sep="."):
> >    l = [s[0:3], s[3:6], s[6:]]
> >    return sep.join(l)
> >
> > print conv("12332321")
> >
> > --
> > pkm ~http://paulmcnett.com
>
> But it's starts from the end..
> print conv("12332321")
> 123.323.21
> This is wrong it would be 12.332.321
>

If you're doing this for thousands separators, look at the locale module:
>>> import locale
>>> locale.setlocale(locale.LC_ALL, 'US') #the default C locale
doesn't do grouping
'English_United States.1252'
>>> locale.format_string('%d', 10000, grouping=True)
'10,000'
>>> locale.format_string('%d', 12332321, grouping=True)
'12,332,321'
>>>

I only have the US locale available on this machine, but if you use a
locale that uses "." as the thousands separator, this should work for
you.


From google at mrabarnett.plus.com  Sat Oct 27 10:09:44 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Sat, 27 Oct 2007 07:09:44 -0700
Subject: Proposal: Decimal literals in Python.
In-Reply-To: <87tzodii6i.fsf@benfinney.id.au>
References: <4721ab28$0$1238$e4fe514c@dreader28.news.xs4all.nl>
	<1193438763.190428.134710@q5g2000prf.googlegroups.com>
	<87tzodii6i.fsf@benfinney.id.au>
Message-ID: <1193494184.618613.81090@50g2000hsm.googlegroups.com>

On Oct 27, 12:12 am, Ben Finney <bignose+hates-s... at benfinney.id.au>
wrote:
> Matimus <mccre... at gmail.com> writes:
> > The trailing L [for 'long' literals] is going away in Python 3.0.
>
> Yes. On the other hand, we are gaining '0bNNNN' for binary literals,
> to go along with '0oNNNN' for octal and '0xNNNN' for hexadecimal.
>
> So, the original poster might get further by proposing an '0dNNN.NNN'
> syntax for 'decimal.Decimal' literals. At least the syntax would be
> consistent and wouldn't add a new punctuation character to the
> language...
>
[snip]
Some languages have or permit 0qNNNN or 0QNNNN for octal to reduce the
chance of confusion of 'O' (oh) with '0' (zero) in uppercase, eg.
0Q123 is clearer than 0O123 (0 oh 123), although lowercase is better,
eg. 0q123 or 0o123.



From dorait at gmail.com  Sat Oct  6 10:15:18 2007
From: dorait at gmail.com (Dorai)
Date: Sat, 06 Oct 2007 14:15:18 -0000
Subject: WebBased Vector 2D Graphics
In-Reply-To: <5mmlf5FeagctU1@mid.uni-berlin.de>
References: <1191579966.073025.168980@50g2000hsm.googlegroups.com>
	<5mmlf5FeagctU1@mid.uni-berlin.de>
Message-ID: <1191680118.867546.307010@k79g2000hse.googlegroups.com>

On Oct 5, 4:28 am, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
>  cj... at bath.ac.uk wrote:
> > Hi there
>
> > I currently have a Python program outputing to the command line,
> > durations of 'completed Steps' and 'data items' in relation to time
> > i.e.
>
> > --------------jfh
> >               ---------kl    //kl started after jfh finished
> >                     % Ds  //new data arrived at this point in time
> >                     -------pl (1)  //Details error with finsihed Step
> >                            *kl      // This step is now outputed but
> > due to error with pl is cancelled (no duration)
>
> > I am new to doing any web based development and don't have a clue
> > where to start! I just wondered what is the best way to output this
> > program to a web page graphically.
>
> > I want to be able to represent these durations "-----" as rectangles
> > and as the program runs the page will refresh every 10 seconds, thus
> > the boxes will expand with time until they have finished. New data
> > will also be represented in boxes with a different colour. I believe
> > some kind of script will have to be run which constantly updates the
> > html page after x seconds which then causes the web page to refresh
> > with the updated data.
>
> > Is there any way this web programming can be done in python. Or
> > perhaps I can use soemthing such as ajax?
>
> > As mentioned previously, I have never done any web based development
> > so don't really know what I'm talking about when trying to understand
> > how I can go from this Python program output to producing some
> > graphical output on a web page.
>
> You certainly need to get on speed with webdevelopment. Otherwise you will
> fail miserably.
>
> There are several options here:
>
>  - rendering a server-side image, deliver that embedded in a html-page
>
>  - render using html tags like DIV and the like, which allow for positioned
> colored rectangles and text, in pixel coordinates
>
>  - canvas tag, to render 2D-drawing-commands
>
>  - embedded SVG
>
> All that can be enriched with AJAX to have that fancy
> realtime-update-thingy.
>
> Diez

Great ideas.

Another approach would be to generate some simple metadata (simple
text, json or xml) on the server and use a javascript libraries (like
http://www.openjacob.org/draw2d.html). SVG is a more generic version
of this approach.



From alexandre.badez at gmail.com  Wed Oct 17 09:45:46 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Wed, 17 Oct 2007 13:45:46 -0000
Subject: Write by logging.FileHandler to one file by many processess
In-Reply-To: <ff5397$j9g$1@nemesis.news.tpi.pl>
References: <ff5397$j9g$1@nemesis.news.tpi.pl>
Message-ID: <1192628746.196204.207620@t8g2000prg.googlegroups.com>

On Oct 17, 3:33 pm, Rafa  Zawadzki <blus... at jabberpl.org> wrote:
> Hello.
>
> As I saw in logging source - there is no lock per file during making emit()
> (only lock per thread).
>
> So, my question is - is it safe to log into one file using many processess
> uses logging logger?
>
> Cheers,
> --
> bluszczhttp://vegan-planet.net

Well, there a dummy response: there is no true thread in Python (I
mean CPython). So there is no problems in this case (cf global
interpreter lock or GIL).



From lbolognini at gmail.com  Tue Oct 30 17:28:20 2007
From: lbolognini at gmail.com (lbolognini at gmail.com)
Date: Tue, 30 Oct 2007 21:28:20 -0000
Subject: Metaclass vs Class factory
Message-ID: <1193779700.135285.239400@22g2000hsm.googlegroups.com>

Hi all,

I dare risk my brain exploding by reaching for the understanding of
metaclasses.

At first i thought i almost got them, even if vaguely back in a corner
of my mind, my understanding was that, as classes' class a metaclass
would be able to return a different class based on input...

... until i thought of factory functions and, Python considering
classes just another first-class object, as such i started considering
them.

So is anybody experienced in the dark side semantics of Python willing
to explain the difference, in simple terms, between a metaclass and a
function that returns a class?

Thanks,
Lorenzo



From khemkaamit at gmail.com  Wed Oct 10 07:02:41 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Wed, 10 Oct 2007 16:32:41 +0530
Subject: Last value of yield statement
In-Reply-To: <1192013260.148059.110910@y42g2000hsy.googlegroups.com>
References: <1192011545.384425.189530@o80g2000hse.googlegroups.com>
	<1192012441.818783.149110@k79g2000hse.googlegroups.com>
	<1192013260.148059.110910@y42g2000hsy.googlegroups.com>
Message-ID: <1360b7230710100402w6c9f81e2od606be9ec800603d@mail.gmail.com>

On 10/10/07, Shriphani <shriphanip at gmail.com> wrote:
> On Oct 10, 3:34 pm, Dustan <DustanGro... at gmail.com> wrote:
> > On Oct 10, 5:19 am, Shriphani <shripha... at gmail.com> wrote:
> >
> > > Hello all,
> >
> > > Let us say I have a function like this:
> >
> > > def efficientFiller(file):
> >
> > Note that you are shadowing the built-in variable 'file' here. Better
> > use 'filename', or something to that effect.
> >
> >
> >
> > >         worthless_list = []
> > >         pot_file = open(file,'r')
> > >         pot_file_text = pot_file.readlines()
> > >         for line in pot_file_text:
> > >                 if line.find("msgid") != -1:
> > >                         message_id = shlex.split(line)[1]
> > >                         if message_id in dictionary:
> > >                                 number = pot_file_text.index(line)
> > >                                 corresponding_crap =
> > > dictionary.get(message_id)
> > >                                 final_string = 'msgstr' + " " + '"' +
> > > corresponding_crap + '"' + '\n'
> > >                                 pot_file_text[number+1] = final_string
> > >                                 yield pot_file_text
> >
> > > efficient_filler =  efficientFiller("libexo-0.3.pot")
> > > new_list = list(efficient_filler)
> > > print new_list
> >
> > > I want to plainly get the last value the yield statement generates.
> > > How can I go about doing this please?
> Well the basic trouble is that the yield statement you see there
> causes it to print the list over and over again when a string
> containing "msgid" is found and the subsequent conditions are
> satisfied. I just want the last list the yield statement generates. I
> don't want the last element of the list generated. just the last
> statement.

I may be being stupid but i really fail to understand that why would
you want to use 'yield' in such a scenario ?

Btw, the following line in your code may cause some unexpected
behavior (in case of duplicates):
<code>
number = pot_file_text.index(line)
</code>

You should rather use 'enumerate' .

Cheers,
-- 
--
Amit Khemka


From kwifturkir at kriocoudek.mailexpire.com  Wed Oct  3 15:46:15 2007
From: kwifturkir at kriocoudek.mailexpire.com (Legrandin)
Date: Wed, 03 Oct 2007 14:46:15 -0500
Subject: toprettyxml messes up with whitespaces
References: <mailman.1402.1191343422.2658.python-list@python.org>
Message-ID: <QcGdnaJX9NoabJ7anZ2dneKdnZzinZ2d@infopact.nl>

Hi Jorgen,

> I parse an XML file, replace a node with a new one (like updating cache)
> and write it back. Every write, new spaces are added.
[ ... ]
> And this goes on. The node is one that is not touched in the XML, it is
> simply written back after reading. I have the same with void spaces in
> between the nodes, I managed to compensate that by stripping the lines.

Before calling toxml/toprettyxml, I strip (with rstrip and lstrip) all 
text nodes and take care of removing all the empty ones.

Of course, this is feasible only if whitespace (space, tab, newline) is
not meaningful for the application.

Legrandin


From george.sakkis at gmail.com  Wed Oct 10 14:00:44 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Wed, 10 Oct 2007 18:00:44 -0000
Subject: Fwd: NUCULAR fielded text searchable indexing
In-Reply-To: <mailman.29.1192028948.927.python-list@python.org>
References: <NYOBGCEXSMTP20CcT7J001c6ad2@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
	<mailman.29.1192028948.927.python-list@python.org>
Message-ID: <1192039244.313876.65960@50g2000hsm.googlegroups.com>

On Oct 10, 11:08 am, Michael.Coll-Ba... at VerizonWireless.com wrote:

> Why apologize?  If someone doesn't like the name given to a piece of
> software by its author(s), screw them.  If I find the software useful,
> I'll use it.  Even if its called 'bouncingBetty'.

Or 'BeautifulSoup' for that matter ;-)

George



From alexandre.badez at gmail.com  Tue Oct 16 04:01:56 2007
From: alexandre.badez at gmail.com (Alexandre Badez)
Date: Tue, 16 Oct 2007 08:01:56 -0000
Subject: PyQt ProgressBar
In-Reply-To: <1192514597.432403.33340@e34g2000pro.googlegroups.com>
References: <1192451049.060044.166830@i13g2000prf.googlegroups.com>
	<1192514597.432403.33340@e34g2000pro.googlegroups.com>
Message-ID: <1192521716.018222.170280@e34g2000pro.googlegroups.com>

On Oct 16, 8:03 am, luca72 <lucabe... at libero.it> wrote:
> No one can help pls
>
> Regards
>
> Luca

I've written a little app for testing this:

import sys
import time
from PyQt4 import QtGui

app = QtGui.QApplication(sys.argv)

barra = QtGui.QProgressBar()
barra.show()
barra.setMinimum(0)
barra.setMaximum(10)
for a in range(10):
    time.sleep(1)
    barra.setValue(a)
app.exec_()


For me, it work great (on windows, with python 2.4.4 and Qt 4.1 and
PyQt 4.0).
Could you tell us a bit more about your problems ?



From george.sakkis at gmail.com  Sat Oct 27 13:02:58 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Sat, 27 Oct 2007 17:02:58 -0000
Subject: how to creating html files with python
In-Reply-To: <mailman.511.1193501565.13605.python-list@python.org>
References: <mailman.511.1193501565.13605.python-list@python.org>
Message-ID: <1193504578.745710.166190@k35g2000prh.googlegroups.com>

On Oct 27, 12:12 pm, "krishnakant Mane" <researchb... at gmail.com>
wrote:

> I have one strange requirement,
> I need to create html files through python and add some data from the database.

The only strange thing here is that you think this is a strange
requirement :) This is quite typical, and practically required for web
development. As Diez pointed out, your main problem will be which of
the dozen or so template packages to pick. Depending on your criteria
(expressive power, syntax close to python, performance, stability
etc.) you may narrow it down to a handful.

George



From sgeiger at ncee.net  Thu Oct 25 00:08:14 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Wed, 24 Oct 2007 23:08:14 -0500
Subject: How to best send email to a low volume list?
In-Reply-To: <1193246253.4017.34.camel@skinner.madoff.com>
References: <1193244896.747562.291580@y27g2000pre.googlegroups.com>
	<1193246253.4017.34.camel@skinner.madoff.com>
Message-ID: <472016AE.6060701@ncee.net>

A mailing list manager is really overkill for what he is trying to do
*IF* he is not maintaining a discussion list.  A "newsletter" list
doesn't sound like a discussion list, especially since he wants to hide
the email addresses of the other people. 

If you want to manage your mailing list in a mail client like Mozilla
Thunderbird, you can export them in CSV format.  You could put some
string in a certain field that would denote that someone is on the
mailing list, and you could compile the email addresses rather easily
and send out a message via the mailto: protocol (which I will use via
the 'open' command available in MacOSX).

import os

subject = ''   # note: you will have problems if you insert certain
characters.
body = ''     # You are better off simply writing the message subject
and body once your mail client starts up.

to = ''
cc = ''
bcc=','.join("""one at one.com
two at two.com
three at three.com
four at four.com
five at five.com""".splitlines())
addresses = ''

headers = 'TO=' + to + '&CC=' + cc + '&BCC=' + bcc
url = 'mailto:' + addresses + '?subject=' + subject + '&' + headers +
'&body=' + body
os.system('open ' + url)


Contact me off list if you would like a little code to help you even
more.  I suspect there is a little bug in this code, but the idea is there.




Adam Lanier wrote:
> On Wed, 2007-10-24 at 16:54 +0000, chris wrote:
>   
>> I need to maintain a list of subscribers to an email list for a
>> "newsletter" that will be sent via a web form probably once a month.
>> I anticipate low numbers--tens to maybe one hundred subscribers at the
>> most.  Just curious what the best way to code this is.  Should I just
>> loop through the addresses and send one-off emails to each, or is it
>> better to somehow send to every recipient in one shot?  One thing I
>> would like to avoid in the latter scenario is each recipient being
>> able to see the entire list of recipients.  Also don't want to trigger
>> any kind of spam thing on my web host by sending out too many emails.
>>
>> Anyway, any tips appreciated.
>>
>> Thanks,
>> Chris
>>
>>     
>
> Before you reinvent the wheel, you should look into using a mailing list
> manager, Mailman for example:
>
> http://www.gnu.org/software/mailman/index.html
>
> Regardless, confirmed double-opt-in should be a requirement as should a
> mechanism for subscribers to unsubscribe themselves.
>
> Using a 'list address' as the from address and using bcc addressing will
> prevent your recipients from being able to see all the other recipient
> addresses.
>
>   


-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

-------------- next part --------------
A non-text attachment was scrubbed...
Name: sgeiger.vcf
Type: text/x-vcard
Size: 288 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071024/2ff02aac/attachment.vcf>

From kay.schluehr at gmx.net  Tue Oct  9 04:56:30 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Tue, 09 Oct 2007 01:56:30 -0700
Subject: python bytecode questions.
In-Reply-To: <1191918011.685441.151180@o3g2000hsb.googlegroups.com>
References: <1191918011.685441.151180@o3g2000hsb.googlegroups.com>
Message-ID: <1191920190.340325.240840@57g2000hsv.googlegroups.com>

On Oct 9, 10:20 am, warhero <beingthexemplaryli... at gmail.com> wrote:

> First question, I can't seem to get any python bytecode to be
> produced. I've tried different techniques from chapter 30.8 to chapter
> 31 of the python guide.. I was under the assumption that after
> compiling a file, it would output a pyc file, but where does it go?
> Any help would be appreciated.

You might take a look at the source of lib/compiler/pycodegen.py

> Second, Are there any other projects out for bundling python bytecode
> files, making it able to use a couple files to distribute an entire
> app??  I saw one of the effbot site but it's old as it was written for
> 1.4..

Not sure what you are after. Do you want something lile PyInstaller

http://pyinstaller.python-hosting.com/

or eggs as in setuptools?

http://peak.telecommunity.com/DevCenter/setuptools

>
> Third, can distributing code in pyc files, speed up the application?
> Or would speed increases only be seen upon application initialization?
> As an example, let's say I'm running an application server, would
> distributing the source in some pyc files with a bootstrapper be any
> faster overall, or just on init??
>
> Thanks

The compilation overhead is neglectable. Unless you change the source
again the server will load the *.pyc file anyway. No significant
speedup has to be expected by not delivering the source.



From hjenea at earthlink.net  Sat Oct 20 14:36:34 2007
From: hjenea at earthlink.net (Horace Enea)
Date: Sat, 20 Oct 2007 11:36:34 -0700
Subject: what version python and wxPython comes with Mac OS X Leopard
References: <1192896630.005491.274280@e9g2000prf.googlegroups.com>
Message-ID: <hjenea-612D25.11363420102007@news.giganews.com>

According to this Apple web page, Python 2.5 will be supported

<http://www.apple.com/macosx/technology/unix.html>

Horace


In article <1192896630.005491.274280 at e9g2000prf.googlegroups.com>,
 chewie54 <dfabrizio51 at gmail.com> wrote:

> Hi All,
> 
> Does anyone know what version of Python and wxPython comes with the
> new Mac OS X Leopard?
> 
> Thanks


From cai.haibin at gmail.com  Tue Oct 23 22:46:12 2007
From: cai.haibin at gmail.com (james_027)
Date: Wed, 24 Oct 2007 02:46:12 -0000
Subject: transforming list
Message-ID: <1193193972.224549.221450@k35g2000prh.googlegroups.com>

hi,

i have a list from a resultset like this
1,"Chicago Bulls",,,""
2,"Cleveland Caveliers",,,""
4,"Detroit Pistons",1,"23686386.35"
4,"Detroit Pistons",2,"21773898.07"
4,"Detroit Pistons",3,"12815215.57"
4,"Detroit Pistons",4,"48522347.76"
4,"Detroit Pistons",5,"28128425.99"
4,"Detroit Pistons",6,"15681603.08"
4,"Detroit Pistons",8,"12627725.03"
4,"Detroit Pistons",9,"11417.00"
4,"Detroit Pistons",10,"945689.22"
4,"Detroit Pistons",11,"818246.57"
4,"Detroit Pistons",12,"1154292.77"
5,"Phoenix Suns",1,"23211445.97"
5,"Phoenix Suns",3,"11268469.53"
5,"Phoenix Suns",4,"49913569.61"
5,"Phoenix Suns",5,"26035236.09"
5,"Phoenix Suns",7,"113953310.50"
5,"Phoenix Suns",8,"17091769.84"
5,"Phoenix Suns",10,"818569.99"
5,"Phoenix Suns",11,"824602.19"
5,"Phoenix Suns",12,"1142018.11"

and I wish to transform it into something like this

1, "Chicago Bulls", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
2, "Cleveland Caveliers", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
4, "Detroit Pistons", 23686386.35, 21773898.07, 12815215.57,
48522347.76, 28128425.99, 15681603.08, 0, 12627725.03, 11417.00,
945689.22, 818246.57, 1154292.77
5, "Phoenix Suns", 23211445.97, 0, 11268469.53, 499113569.61,
26035236.09, 0, 113953310.50, 17091769.84, 0, 818569.99, 824602.19,
1142018.11

currently my solution is something like this the rows is the original
list which is list of list ... the report is a list of list with the
new arrangement that I want.

        report = []
        report_item = None
        temp_c_id = 0
        for row in rows:
            if not row[0] == temp_c_id:
                temp_c_id = row[0]
                if report_item: report.append(report_item)
                report_item = [row[0], row[1], 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0]
            if row[2]:
                report_item[row[2]+1] = row[3]

I feel this solution is not that good, can I make this more pythonic?!

Thanks
james :)



From jcd at sdf.lonestar.org  Thu Oct 18 08:58:37 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Thu, 18 Oct 2007 08:58:37 -0400
Subject: Appending a list's elements to another list using a list
	comprehension
In-Reply-To: <1192708630.322399.234790@t8g2000prg.googlegroups.com>
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
	<1192657240.005464.35770@z24g2000prh.googlegroups.com>
	<87myug3hhv.fsf@mulj.homelinux.net>
	<1192708630.322399.234790@t8g2000prg.googlegroups.com>
Message-ID: <20071018125837.GA9527@sdf.lonestar.org>

On Thu, Oct 18, 2007 at 11:57:10AM -0000, Paul Hankin wrote regarding Re: Appending a list's elements to another list using a list comprehension:
> 
> Not to me: I can never remember which of a.append and a.extend is
> which. Falling back to a = a + b is exactly what you want. For
> instance:
> 
> a = (1, 2, 3)
> a += (4, 5, 6)
> 
> works, whereas:
> 
> a = (1, 2, 3)
> a.extend((4, 5, 6))
> 
> doesn't. So using += makes your code more general. There's no standard
> sequence type that has extend and not +=, so worrying that += is
> slower isn't a concern unless you're using a user-defined class. Even
> then, it's probably a mistake that should be fixed in the class rather
> than requiring .extend() to be used instead of +=.
> 

I was going to argue that in fact += is not more general, it just covers a different set of use cases, but then I tested my hypothesis...

>>> a = [1,2,3]
>>> b = a
>>> c = [4,5,6]
>>> d = c
>>> e = [7,8,9]
>>> a.extend(e)
>>> b
[1, 2, 3, 7, 8, 9]
>>> c += e
>>> d # I expected [4, 5, 6]
[4, 5, 6, 7, 8, 9]
>>> c = c + e # But += doesn't do the same as this
>>> c
[4, 5, 6, 7, 8, 9, 7, 8, 9]
>>> d
[4, 5, 6, 7, 8, 9]

So I learned something new.

Cheers,
Cliff


From gnuist006 at gmail.com  Tue Oct  9 02:34:22 2007
From: gnuist006 at gmail.com (gnuist006 at gmail.com)
Date: Tue, 09 Oct 2007 06:34:22 -0000
Subject: The fundamental concept of continuations
In-Reply-To: <470b1b30$0$11022$4c368faf@roadrunner.com>
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
	<470b1b30$0$11022$4c368faf@roadrunner.com>
Message-ID: <1191911662.983658.79540@g4g2000hsf.googlegroups.com>

On Oct 8, 11:09 pm, "." <f... at bar.biz> wrote:
> On Tue, 09 Oct 2007 05:15:49 +0000, gnuist006 wrote:
> > Again I am depressed to encounter a fundamentally new concept that I
> > was all along unheard of. Its not even in paul graham's book where i
> > learnt part of Lisp. Its in Marc Feeley's video.
>
> > Can anyone explain:
>
> > (1) its origin
>
> One of the lambda papers, I think.  I don't remember which.
>
> > (2) its syntax and semantics in emacs lisp, common lisp, scheme
>
> elisp and Common Lisp don't have them (although sbcl and maybe others user
> continuations internally).  In scheme CALL-WITH-CURRENT-CONTINUATION takes
> a function of one argument, which is bound to the current continuation.
> Calling the continuation on some value behaves like
> CALL-WITH-CURRENT-CONTINUATION returning that value.  So
>  (call/cc (lambda (k) (k 42))) => 42
> You can think of it as turning the whatever would happen after call/cc
> was called into a function.  The most practical use for continuations in
> implementing control structures, though there are some other neat tricks
> you can play with them.
>
> > (3) Is it present in python and java ?
>
> Certainly not Java, I dunno about Python.  I've never seen someone use
> them in Python, but the pythonistas seem to want to add everything but a
> decent lambda to their language so I wouldn't be surprised if someone had
> added a call/cc.  Ruby has it.
>
> > (4) Its implementation in assembly. for example in the manner that
> > pointer fundamentally arises from indirect addressing and nothing new.
> > So how do you juggle PC to do it.
>
> You have Lisp in Small Pieces.  Read Lisp in Small Pieces.
>
> > (5) how does it compare to and superior to a function or subroutine
> > call. how does it differ.
>
> You use them like a function call.  You can also use them like
> setjmp/longjmp in C.  You can implement coroutines with them, or
> events, or simulate non-determinism or write things like ((call/cc call/cc)
> (call/cc call/cc)) and make your head explode, use it like goto's inbred
> second cousin or in general whatever perverse things you might like to do
> with the flow of control in your program.
>
>
>
> > Thanks a lot.
>
> > (6) any good readable references that explain it lucidly ?
>
> Lisp in Small Pieces for implementation details,  the Scheme Programming
> Language for examples.

which lambda paper ?



From michele.simionato at gmail.com  Sat Oct  6 09:29:41 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sat, 06 Oct 2007 13:29:41 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <470789c2$0$28579$426a74cc@news.free.fr>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
Message-ID: <1191677381.068666.65870@k79g2000hse.googlegroups.com>

On Oct 6, 9:13 am, Bruno Desthuilliers <bruno.
42.desthuilli... at wtf.websiteburo.oops.com> wrote:
> - talking about routes, you say:
>
> """
> I have no Ruby On Rails background, so I don't see the advantages of routes.
> """
>
> I don't have any RoR neither, but as far as I'm concerned, one of the
> big points with routes is url_for(), that avoids having too much
> hard-coded urls.

Well, url_for is convenient, I would not deny it. Still it is
not compelling to me.

> - about FormEncode : that's a package I've used before without Pylons,
> and while it has a few dark corners, it's mostly doing TheRightThing for
> most current validation/conversion tasks. I'll still use it with or
> without Pylons
>
> - about SQLAlchemy : here again, I used this package prior any
> experience with Pylons. FWIW, I used it in the most basic, 'low-level'
> way, ie without any ORM stuff, and I found it to be a pretty good
> alternative to db-api. It's a bit complex, but powerful, and having the
> possibility to handle sql requests as Python objects (instead of raw
> strings) really helps.

I have wanted to do a serious test of SQLAlchemy for a
couple of years, but never found the time :-(

Do you (or something else) have something to say about Beaker?
I looked at the source code and it seems fine to me, but I have
not used it directly, not stressed it. I need a
production-level WSGI session middleware and I wonder what the
players are (for instance how Beaker does compare with flup?)

     Michele Simionato



From http  Sun Oct 28 15:22:13 2007
From: http (Paul Rubin)
Date: 28 Oct 2007 12:22:13 -0700
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
	<mailman.499.1193474381.13605.python-list@python.org>
	<13i6e9timmvuu51@corp.supernews.com>
Message-ID: <7xbqajvyca.fsf@ruckus.brouhaha.com>

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:
> You can't just say:
> product = map(operator.mul, [A*T*C*G]*200000)
> and expect to get anywhere.

from math import log
A,T,C,G = (0.35, 0.30, 0.25, 0.10)
c,m = divmod(200000*log(A*T*C*G,10), 1)
print "%.3fe%d"%(m, int(c))


From acherry at btinternet.com  Fri Oct  5 08:52:14 2007
From: acherry at btinternet.com (Adrian Cherry)
Date: 5 Oct 2007 13:52:14 +0100
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>
Message-ID: <Xns99C08FBF59089apc@10.15.188.42>

Steve Holden <steve at holdenweb.com> wrote in
news:mailman.1576.1191584716.2658.python-list at python.org: 

> I've just been told by the editors at Python Magazine that
> the first issue is out. It's all-electronic so anyone can
> download and read it. Let them know what you think:
> 
>    http://www.pythonmagazine.com/c/issue/2007/10
> 
> regards
>   Steve

Thanks for that, initial impression looks good, I peruse it later 
when the boss isn't watching. Unfortunately there seems to be a 
few horror pictures crept in on page 4!.

One initial comment is the end of the magazine. It just seems to 
stop abruptly. No back page commentry, cartoon or teaser for the 
next issue.

Regards

Adrian






From dstromberglists at gmail.com  Wed Oct 10 18:37:26 2007
From: dstromberglists at gmail.com (Dan Stromberg)
Date: Wed, 10 Oct 2007 15:37:26 -0700
Subject: Really basic problem
References: <mailman.1663.1191838188.2658.python-list@python.org>
	<slrnfgk18v.kbh.hat@se-162.se.wtb.tue.nl>
Message-ID: <pan.2007.10.10.22.37.23.917234@gmail.com>

On Mon, 08 Oct 2007 12:23:27 +0200, A.T.Hofkamp wrote:

> On 2007-10-08, Andreas Tawn <andreas.tawn at ubisoft.com> wrote:
>>> i know this example is stupid and useless, but that's not the answer
>>> to my question.
>>> here it goes:
>>> 
>> You've just discovered the joys of floating point number comparisons.
>>
>> Consider this snippet:
>>
>> status = 0.0
>> print (repr(status))
>>
>> for i in range(10):
>>     status += 0.1
>>     print (repr(status))
>>
>> Output:
>>
>> 0.0
>> 0.10000000000000001
>> 0.20000000000000001
>> 0.30000000000000004
>> 0.40000000000000002
>> 0.5
>> 0.59999999999999998
>> 0.69999999999999996
>> 0.79999999999999993
>> 0.89999999999999991
>> 0.99999999999999989
>>
>> The issue is that 0.1 etc don't have an exact representation as floating
>> point.
>>
>> Interestingly:
>>
>>>>> 0.10000000000000001 == 0.1
>> True
>>>>> 0.30000000000000004 == 0.3
>> False
>>
>> I guess this means that Python has some concept of "close enough", but
>> I'll have to defer to someone more knowledgeable to explain that.
> 
> It's not Python, it is the computer, ie you have this problem with any program
> that uses floating point calculations. However, some programs hide it from you
> so you think there is no problem...
> 
> Plz read the FAQ for an answer to this and many other questions:
> http://www.python.org/doc/faq/general/#why-are-floating-point-calculations-so-inaccurate

It's not even the computer precisely - it's the underlying math.  The
computer is just doing the best it can with the math, but you'll see the
same thing if you do this with pencil and paper.

Some numbers have a rational (finite) representation in a given radix and
some don't, and which numbers are rational in radix a may be irrational in
a different radix b.

Oh, and some numbers that are rational in a given radix may require too
many digits to be represented precisely anyway.




From bj_666 at gmx.net  Fri Oct  5 03:41:40 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 5 Oct 2007 07:41:40 GMT
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
	<fe3svd$2nb$3@lust.ihug.co.nz>
	<mailman.1557.1191561184.2658.python-list@python.org>
	<fe4mst$jic$1@lust.ihug.co.nz>
Message-ID: <5mm85kFe9gesU1@mid.uni-berlin.de>

On Fri, 05 Oct 2007 19:51:05 +1300, Lawrence D'Oliveiro wrote:

> It is not the _name_ that is being reassigned, it is the _variable_ that
> the name is bound to. All names in Python are bound to variables at all
> times.

I think this is the source of the confusion.  Most people don't seem
to share your definition of `variable` above.

To me a `variable` is made of a name, a memory address, a data type, and
a value.  In languages like C the address and type are attached to the
name while in Python both are attached to the value.

Ciao,
	Marc 'BlackJack' Rintsch


From __peter__ at web.de  Fri Oct 12 09:38:56 2007
From: __peter__ at web.de (Peter Otten)
Date: Fri, 12 Oct 2007 15:38:56 +0200
Subject: Traceback (most recent call last): PROBLEM
References: <mailman.124.1192194825.927.python-list@python.org>
Message-ID: <fentdg$la6$03$2@news.t-online.com>

smarras wrote:

> Hello everyone, I keep obtaining an error message whenever I execute some
> very simple routines; the error that follows says that I am calling
> certain functions that, in reality, I am not calling from any of the
> routines that I wrote:
> 
> error:
> 
>> python fwrite_mat.py
> 
>   0, 0, 0, 0 ,  0, 1, 2, 3 ,  0, 2, 4, 6
> Traceback (most recent call last):
>   File "fwrite_mat.py", line 7, in <module>
>     from xlrd import *
>   File
> "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/xlrd/__init__.py",
> line 256, in <module>
>     from timemachine import *
>   File
> "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/xlrd/timemachine.py",
> line 21, in <module>
>     from array import array as array_array
> ImportError: cannot import name array
> 
> In these lines that I pasted, for example the "array-looking" string has
> nothing to do with my function, nor the import name "timemachine" or the
> import name "array".
> 
> Can anyone help me understand why python is looking such libraries, and
> why it keeps in memory an array that I am not using?
> 
> Here also the simple routine I wrote:
> 
> import os, sys
> import xlrd

"import xlrd" triggers the execution of the file .../xlrd/__init__.py
containing the statement "from timemachine import *" which in turn causes
.../xlrd/timemachine.py to execute. The latter file contains "from array
import array as array_array", so yes you are using "array" though
indirectly -- or you would if the import didn't fail.

The cause of the failure is probably a script named "array.py" that you
have written and put in the same folder as fwrite_mat.py. Rename
your array.py, remove the corresponding array.pyc, and the error should go
away.

Peter


From hniksic at xemacs.org  Mon Oct  1 15:12:22 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 01 Oct 2007 21:12:22 +0200
Subject: Reentrancy of Python interpreter
References: <mailman.1260.1191015110.2658.python-list@python.org>
Message-ID: <87bqbilkdl.fsf@mulj.homelinux.net>

Brad Johnson <Brad.Johnson at ballardtech.com> writes:

> I have a place where I execute a Python command that calls into C++
> code which then in turn calls back into Python using the same
> interpreter. I get a fatal error which is "PyThreadStage_Get: no
> current thread."

Does the C++ code call into the interpreter from a different thread?


From paddy3118 at googlemail.com  Thu Oct 25 08:43:53 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Thu, 25 Oct 2007 12:43:53 -0000
Subject: New to Vim and Vim-Python
In-Reply-To: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
References: <1193250319.878477.91460@t8g2000prg.googlegroups.com>
Message-ID: <1193316233.906302.31550@d55g2000hsg.googlegroups.com>

On Oct 24, 7:25 pm, Daniel Folkes <danfol... at gmail.com> wrote:
> I am new to using Vim's scripts.
>
> I was wondering if anyone uses Vim-Python and how to use it?   This
> includes things like key bindings and such.
>
> Thanks in advance,
> Daniel Folkes
> danfol... at gmail.com

You asked at the right time :-)
See:
  http://www.builderau.com.au/program/python/soa/Extending-Vim-with-Python/0,2000064084,339283181,00.htm



From tommy.nordgren at comhem.se  Wed Oct 31 17:36:57 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Wed, 31 Oct 2007 22:36:57 +0100
Subject: XML DOM, but in chunks
In-Reply-To: <1193862283.829628.122480@k79g2000hse.googlegroups.com>
References: <1193862283.829628.122480@k79g2000hse.googlegroups.com>
Message-ID: <1E168F83-9E9C-4C45-AE5D-8A78D85E7DCF@comhem.se>


On 31 okt 2007, at 21.24, Sean Davis wrote:

> I have some very large XML files that are basically recordsets.  I
> would like to access each record, one-at-a-time, and I particularly
> like the ElementTree library for accessing the data.  Is there a way
> to have ElementTree read only one record of the data at a time?
> Alternatively, are there other ways that would allow one to parse out
> a record at a time and maintain some nice ways of accessing the
> elements within the record?
>
> Thanks,
> Sean
>
> --  
> http://mail.python.org/mailman/listinfo/python-list
	You need a Python (or other language) implementation of the SAX API
----------------------------------
Skinheads are so tired of immigration, that they are going to move to  
a country that don't accept immigrants!
Tommy Nordgren
tommy.nordgren at comhem.se





From kay.schluehr at gmx.net  Wed Oct 10 12:37:05 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Wed, 10 Oct 2007 09:37:05 -0700
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191988646.640498.278860@19g2000hsx.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191988646.640498.278860@19g2000hsx.googlegroups.com>
Message-ID: <1192034225.641699.240200@r29g2000hsg.googlegroups.com>

On Oct 10, 5:57 am, mdipie... at cs.depaul.edu wrote:
> Since you are starting a new project you may want to look into
> something new and different
>
> http://mdp.cti.depaul.edu/examples

The delivered sourcecode is syntactically broken. Tabs and whitespaces
were mixed and when I open a file like gluon/global.py I find sections
like this:

class Request(Storage):
    """
    defines the request object and the default values of its members
    """
    def __init__(self):
    self.env=Storage()       # this line is incorrect syntax in Python
    self.cookies=Storage()
    self.get_vars=Storage()

Moreover there aren't any indications that the code was tested.

Kay




From korthrun at omfg.lulz.net  Tue Oct 30 12:32:23 2007
From: korthrun at omfg.lulz.net (Korthrun)
Date: Tue, 30 Oct 2007 11:32:23 -0500
Subject: statvfs
References: <QpOdncfQo4mRy7vanZ2dnUVZ_s-pnZ2d@giganews.com>
	<5ona1oFneqbaU3@mid.uni-berlin.de>
Message-ID: <oaGdnTDuWIwKwbranZ2dnUVZ_qzinZ2d@giganews.com>

At 2007-10-29, bj_666 at gmx.net expressed thier undying love for me by saying:
> On Mon, 29 Oct 2007 16:52:12 -0500, Korthrun wrote:
>
>> I'm writing some scripts to populate RRD's, mainly for practicing python.
>> 
>> As such I've decided to play with statvfs in order to build disk
>> graphs. Here is what I have and what I get. What I'm curious about
>> here is the meaning of the "L" charcter, as that fubars math.
>
> The L means its a `long` literal, i.e. an integer value that can be
> arbitrary big.  Well its limited by memory of course.
>
> And it doesn't "fubar" math, the L just shows up in the string
> representation but you don't calculate with strings but numbers.
>
>> ###start code###
>> 
>> from os import statvfs, path
>> from statvfs import *
>> 
>> mps = [ '/', '/home', '/www', '/var', '/storage/backups',
>> '/storage/snd' ]
>> 
>> for fs in mps:
>> 	data = statvfs(fs)
>> 	print data
>> 
>> ###end code, start output###
>> (4096, 4096, 4883593L, 4045793L, 4045793L, 0L, 0L, 0L, 1024, 255)
>> (4096, 4096, 1220889L, 1114718L, 1114718L, 0L, 0L, 0L, 0, 255)
>> (4096, 4096, 19267346L, 18273138L, 18273138L, 0L, 0L, 0L, 0, 255)
>> (4096, 4096, 3662687L, 3492397L, 3492397L, 0L, 0L, 0L, 0, 255)
>> (4096, 4096, 3417702L, 2116063L, 2116063L, 0L, 0L, 0L, 0, 255)
>> (4096, 4096, 25885944L, 21799115L, 21799115L, 0L, 0L, 0L, 0, 255)
>> ###end output###
>> 
>> Ideally I'll just do some blocksize * number of blocks math to get
>> the % of used space.
>
> Just go ahead and do it:
>
> In [185]: stat = os.statvfs('/')
>
> In [186]: stat.f_bsize
> Out[186]: 4096
>
> In [187]: stat.f_blocks
> Out[187]: 2622526L
>
> In [188]: stat.f_bsize * stat.f_blocks
> Out[188]: 10741866496L
>
> Ciao,
> 	Marc 'BlackJack' Rintsch
Thanks for the response, I'll have to play with it more, as I'm
obviously misunderstanding the error that I'm getting.
I didn't include the part of the script that did the math, as it
wasn't important to my base question.

I was getting TypeError: "sequence index must be integer", so I
thought the L was making python see it as a string.

Thanks for the insight

Josh


From besturk at gmail.com  Sun Oct 28 03:33:45 2007
From: besturk at gmail.com (Abandoned)
Date: Sun, 28 Oct 2007 00:33:45 -0700
Subject: insert string problems..
In-Reply-To: <1193556274.869444.28560@o80g2000hse.googlegroups.com>
References: <1193556274.869444.28560@o80g2000hse.googlegroups.com>
Message-ID: <1193556825.352068.218200@57g2000hsv.googlegroups.com>

Also..
a="123,245,1235,663"
cursor.execute("SELECT id, name FROM data WHERE id in (%s)", (a,))
In this query must be:
SELECT id, name FROM data WHERE id in (123,245,1235,663)
but it looks:
SELECT id, name FROM data WHERE id in ("123,245,1235,663")
How can i delete " ?



From deets at nospam.web.de  Fri Oct 12 12:36:52 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 12 Oct 2007 18:36:52 +0200
Subject: RMI with Pyro et al
In-Reply-To: <470eb354$0$231$e4fe514c@news.xs4all.nl>
References: <mailman.77.1192108312.927.python-list@python.org>
	<5n6pauFgghv4U1@mid.uni-berlin.de>
	<470eb354$0$231$e4fe514c@news.xs4all.nl>
Message-ID: <5n9m58Fh4sivU1@mid.uni-berlin.de>

Irmen de Jong schrieb:
> Diez B. Roggisch wrote:
> 
>> Go install cygwin (but not it's included python-interpreter, or at least
>> make sure you have your python path properly under control) and then 
>> simply
>> start the script from the command-line. And hit C-c if you need it to 
>> stop,
>> and restart it. Only start it as service if it's deployed.
> 
> What's cygwin got to do with it?

Being the better shell. Nothing else :)

Diez


From alan.haffner at gmail.com  Fri Oct 12 03:10:46 2007
From: alan.haffner at gmail.com (alan.haffner at gmail.com)
Date: Fri, 12 Oct 2007 00:10:46 -0700
Subject: tarfile...bug?
In-Reply-To: <1191994404.182743.112680@50g2000hsm.googlegroups.com>
References: <1191933951.458411.285300@r29g2000hsg.googlegroups.com>
	<1191994404.182743.112680@50g2000hsm.googlegroups.com>
Message-ID: <1192173046.202129.315210@t8g2000prg.googlegroups.com>

On Oct 9, 10:33 pm, Anurag <anuraguni... at gmail.com> wrote:
> Hi,
>
> Have any one faced such problem, I assume it must be common if it can
> be replicated so easily , or something wrong with my system
>
> Also if I use tar.members instead of tar.getmembers() it works
> so what is the diff. between tar.members and tar.getmembers()
>
> rgds
> Anurag

if you are not fully dependant on tarfiles, have a look at the zipfile
library in Python.  Everytime I start to use the tarfile .lib, the
zip .lib turns out to be a better solution.

Cheers,

  --Alan



From Shawn at Milochik.com  Mon Oct 29 10:37:26 2007
From: Shawn at Milochik.com (Shawn Milochik)
Date: Mon, 29 Oct 2007 10:37:26 -0400
Subject: New
In-Reply-To: <1193624324.841364.289980@v3g2000hsg.googlegroups.com>
References: <1193624324.841364.289980@v3g2000hsg.googlegroups.com>
Message-ID: <2dc0c81b0710290737w415efab5m453bc63dd756b126@mail.gmail.com>

On 10/28/07, jkbiwott2002 at yahoo.com <jkbiwott2002 at yahoo.com> wrote:
> Hi!
> Am new to Python and am looking for a sample project that demonstrates
> how to connect to MySQL, save data in MySQL database using a form on a
> web page.
>
> Regards,
> Joseph
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


1. Read this: http://catb.org/~esr/faqs/smart-questions.html

2. You can easily find what you're asking for on Google.


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct  3 07:55:40 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 03 Oct 2007 13:55:40 +0200
Subject: random keypress bounce in a terminal
References: <mailman.1391.1191333170.2658.python-list@python.org>
	<5mf93iFd7kugU1@mid.individual.net>
	<mailman.1433.1191398478.2658.python-list@python.org>
Message-ID: <5mhe9sFdhg2jU2@mid.individual.net>

Istv?n wrote:
> Moreover, I would also state for others: the behavior of this code
> is independent of the keyboard repeating rate.

Sure, it's not multiple keypresses but a sequence generated by the
VT code in the kernel.

> But what if it _seems_  to work differently...?
> That's the reason of trying to make somebody just to see
> him/herself the symptom.
> *   bfc.py 4863 bytes <http://evoran.hu/tmp/bfc.py>*
> *  uni_getch.py 873 bytes <http://evoran.hu/tmp/uni_getch.py>*
> *   demo1.brd 84311 bytes <http://evoran.hu/tmp/demo1.brd>*
> *   demo2.brd 84336 bytes <http://evoran.hu/tmp/demo2.brd>
> http://www.evoran.hu/tmp/
> *Please, check somebody and explain how is possible what is
> impossible.... Istvan

Check what? What's impossible?

Regards,


Bj?rn

-- 
BOFH excuse #120:

we just switched to FDDI.



From panguohualove at sina.com  Mon Oct  1 08:06:12 2007
From: panguohualove at sina.com (panguohua)
Date: Mon, 01 Oct 2007 05:06:12 -0700
Subject: I earn $36800 a month with google adsense
In-Reply-To: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
References: <1191215629.384871.280240@o80g2000hse.googlegroups.com>
Message-ID: <1191240372.428917.253350@o80g2000hse.googlegroups.com>

On 10 1 ,   1 13 , panguohua <panguohual... at sina.com> wrote:
> www.space666.com
>
> a good website for making money with your blog.more information there

support!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!



From martin at v.loewis.de  Sun Oct 14 03:35:16 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 14 Oct 2007 09:35:16 +0200
Subject: unicodedata implementation - categories
In-Reply-To: <mailman.175.1192307538.927.python-list@python.org>
References: <mailman.175.1192307538.927.python-list@python.org>
Message-ID: <4711C6B4.3030709@v.loewis.de>

> 1) Why doesn't the category method raise an Exception, like the name method
> does?

As Chris explains, the result category means "Other, Not Assigned".
Python returns this category because it's the truth: for those
characters, the value of the "category" property really *is* Cn;
it means that they are not assigned.

If you are wondering how unicodedata.c comes up with the result:
the unassigned characters get a record index of 0, and that has a
category value of 0, which is "Cn".

> 2) Given that the category method doesn't currently raise an Exception,
> please could someone explain how the category is calculated? I have tried to
> figure it out based on the CPython code, but I have thus far failed, and I
> would also prefer to have it explicitly defined, rather than mandating that
> a Jython (.NET, etc) implementation uses the same (possibly non-optimal for
> Java) data structures and algorithms. 

You definitely should *not* follow the Python implementation. Instead,
the Unicode database is defined by the Unicode consortium, so the
Unicode standard is the ultimate specification.

To implement it in Java, I recommend to use java.lang.Character.getType.
If that returns java.lang.Character.UNASSIGNED, return "Cn".

Regards
Martin


From timr at probo.com  Thu Oct 18 00:21:39 2007
From: timr at probo.com (Tim Roberts)
Date: Thu, 18 Oct 2007 04:21:39 GMT
Subject: Simple Text Processing Help
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
	<fevlma$imh$01$2@news.t-online.com>
	<1192482484.987399.112620@k35g2000prh.googlegroups.com>
	<ff1rtk$j6m$03$1@news.t-online.com>
	<1192538871.985374.46760@e34g2000pro.googlegroups.com>
Message-ID: <3ondh35mdq08dlkoashd6aq7o6os1uplsn@4ax.com>

patrick.waldo at gmail.com wrote:
>
>And now for something completely different...
>
>I've been reading up a bit about Python and Excel and I quickly told
>the program to output to Excel quite easily.  However, what if the
>input file were a Word document?  I can't seem to find much
>information about parsing Word files.  What could I add to make the
>same program work for a Word file?

Word files are not human-readable.  You parse them using
Dispatch("Word.Application"), just the way you wrote the Excel file.

I believe there are some third-party modules that will read a Word file a
little more directly.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.


From python at hope.cz  Wed Oct  3 03:32:04 2007
From: python at hope.cz (Johny)
Date: Wed, 03 Oct 2007 00:32:04 -0700
Subject: Python and SSL
In-Reply-To: <47032DF5.4000809@v.loewis.de>
References: <1190959345.041723.108130@k79g2000hse.googlegroups.com>
	<6cydncA2Jpv082DbnZ2dnUVZ_q6dnZ2d@comcast.com>
	<1191224526.856466.305980@57g2000hsv.googlegroups.com>
	<7xzlz2q53e.fsf@ruckus.brouhaha.com>
	<1191251260.376954.265060@22g2000hsm.googlegroups.com>
	<47012255.4020502@v.loewis.de>
	<xZ9Mi.1114$ih1.586@nlpi068.nbdc.sbc.com>
	<470174FC.5060709@v.loewis.de>
	<1191389578.176470.161360@50g2000hsm.googlegroups.com>
	<47032DF5.4000809@v.loewis.de>
Message-ID: <1191396724.394393.322320@57g2000hsv.googlegroups.com>

On Oct 3, 7:51 am, "Martin v. L?wis" <mar... at v.loewis.de> wrote:
> > a  certificate that is signed by OpenSSL's own CA( certification
> > authority), that is not recognized in the program's list of root CAs,
> > causes an exception to be raised.
>
> What is "the program"? What programming language is it written in?
> What library does it use to maintain a list of root CAs, and what
> code does it execute to find out that a certificate is not in this
> list?
>
> Are you sure this is related to Python at all?
Martin,
Thank you for your reply.

It looks like this

MyPythonProgram --->Proxy---->Server
The  proxy is written in Java. I want to use that proxy to see what my
Python program sends to server.
The proxy uses its own certificate and this certificate must be
trusted, I think, otherwise I receive an error.

If I use
InternetBrowser --->Proxy---->Server

browser asks me if the Proxy's certificate is trusted.If I reply  YES,
than communication continues( I think browser adds this certificate
among trusted ones)

So, can you help, please?
Thanks.
L.



From eddie at holyrood.ed.ac.uk  Wed Oct 31 07:12:47 2007
From: eddie at holyrood.ed.ac.uk (Eddie Corns)
Date: Wed, 31 Oct 2007 11:12:47 +0000 (UTC)
Subject: why did these companies choose Tcl over Python
References: <1193779506.643321.216030@z9g2000hsf.googlegroups.com>
Message-ID: <fg9nvf$n7b$1@scotsman.ed.ac.uk>

chewie54 <dfabrizio51 at gmail.com> writes:

>Hello,

>As an electronics engineer I use some very expensive EDA CAD tool
>programs that are scriptable using Tcl.  I was wondering why these
>companies have choose to use Tcl instead of Python.   Some of these
>are:

>   Mentor Graphics ModelTech VHDL and Verilog simulator
>   Synopsys  Design Compiler and Primetime Static Timing Analyzer
>   Actel FPGA tools.

>Tcl seems to very popular in my business as the scripting language of
>choice.

>I'm in the process of deciding to use Tcl or Python for a CAD tool
>program that I have been working on.    Most of the core of the
>program,  the database,   will be done is C as an extension to either
>Tcl or Python,   but I intend to use Tk or wxPthon for the GUI.   I do
>need publishing quality outputs from drawings done on a graphics
>device that are scaled to standard printer paper sizes.


>I would prefer to use Python but can't deny how popular Tcl is,  as
>mentioned above,  so my question is why wasn't Python selected by
>these companies as the choice of scripting languages for their
>product?

Having abandoned TCL for Python years ago, my thought is:

If you expect your users to write (and maintain) large scripts - have mercy on
them and don't give them TCL.

For larger programs/scripts having proper data structures, readable syntax,
etc. is a very significant factor.  (Of course TCL may have improved beyond
all recognition since I last used it).  Try putting together some sample
scripts in both languages and see how easily others can understand them (and
yourself in a few months).

When I want something nimbler than Python I use Lua.

Eddie


From mensanator at aol.com  Mon Oct 22 13:57:25 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 22 Oct 2007 10:57:25 -0700
Subject: Iteration for Factorials
In-Reply-To: <Xns99D18CCFC2430duncanbooth@127.0.0.1>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<Xns99D18CCFC2430duncanbooth@127.0.0.1>
Message-ID: <1193075845.148527.80820@k35g2000prh.googlegroups.com>

On Oct 22, 7:50 am, Duncan Booth <duncan.bo... at invalid.invalid> wrote:
> Py-Fun <lorna.bu... at gmail.com> wrote:
> > I'm stuck trying to write a function that generates a factorial of a
> > number using iteration and not recursion.  Any simple ideas would be
> > appreciated.
>
> This version avoids doing anything fancier than adding 1, so it should be
> simple enough for anyone:
>
> def factorial(e):
>     a = 1
>     for b in range(e):
>         c = 0
>         for j in range(b, -1, -1):
>             for d in range(a):
>                 c += 1
>         a = c
>     return a

Not simple enough for my taste:

>>> import gmpy
>>> gmpy.fac(10)
mpz(3628800)



From marc.wyburn at googlemail.com  Fri Oct 19 10:50:51 2007
From: marc.wyburn at googlemail.com (marc wyburn)
Date: Fri, 19 Oct 2007 14:50:51 -0000
Subject: Please Help !!!
In-Reply-To: <mailman.200.1192778545.13605.python-list@python.org>
References: <mailman.200.1192778545.13605.python-list@python.org>
Message-ID: <1192805451.425137.28360@t8g2000prg.googlegroups.com>

On Oct 17, 10:32 am, Heiko Schlierkamp <hschlierk... at sense-of-
africa.com.na> wrote:
> I need to update the virus program every day with the new dat file from
> mcafee
> I would like to us a Bat file to go to the web page and download the dat
> file automatically to a specific Directory, that I have created, but my
> problem lays in that the bat file will open the file to be downloaded but
> the bat file does not confirm the save button so that it start to download
> the file, that I still need to do manual. Please advice me with what still
> need to be done!!
> Your help will be very appreciated!!!
>
> I have added the file so you can see what it does exactly!!
>
> > Heiko Schlierkamp
> > SENSE OF AFRICA - Namibia
> > E-mail: hschlierk... at sense-of-africa.com.na
> > Website:www.sense-of-africa.com
> > Tel: +264 61 275300
> > Fax: +264 61 263417
> > PO Box 2058, Windhoek, Namibia
>
>  <<Superdat.rar>>
>
>  Superdat.rar
> 1KDownload

I'm not going to open that file I'm afraid and I doubt many others
will either. You are using Python I assume.  Have a look at the urllib
module and the urlretrieve function.



From scripteaze at gmail.com  Tue Oct 23 01:30:57 2007
From: scripteaze at gmail.com (scripteaze at gmail.com)
Date: Tue, 23 Oct 2007 05:30:57 -0000
Subject: On 911 the FASCIST YANK AND ANGLO MOther Fuckers did a Heinous
	crime of killing 3000 people in a drama themselves
In-Reply-To: <1193115090.251163.132230@v23g2000prn.googlegroups.com>
References: <1193115090.251163.132230@v23g2000prn.googlegroups.com>
Message-ID: <1193117457.912935.270630@z24g2000prh.googlegroups.com>

On Oct 22, 9:51 pm, therm... at india.com wrote:
> The time of fall
> The fake anthrax letters
> The absence of pentagon video, the most highly defended building
> The thermate residue
> The molten metal pools
> The pyroclastic flow of dust
> The shattering of the whole building into dust and small pieces
> The spherical particles of molten iron with sulfur, potassium and
> permanganate elements
>
> The finger of suspicion, nay certainty points to only the yank and the
> anglo-saxon bastards
>
> And all that to steal the oil.
>
> Bin Laden and Adam Gadahn productions are make in the Langley HQ of
> CIA.
>
> Al-Qaida does not exist.
>
> The goal is to prevent democratic order in the oil rich arab countries.

why dont you shove your spam trash up your ass, drink a tall glass of
shut the fuck up and when your done, you can go in the backyard and
play hide and go fuck yourself.



From bozonm at vscht.cz  Fri Oct  5 06:33:16 2007
From: bozonm at vscht.cz (Michal Bozon)
Date: Fri, 05 Oct 2007 12:33:16 +0200
Subject: tkinter question
References: <1191554174.490449.251400@50g2000hsm.googlegroups.com>
Message-ID: <pan.2007.10.05.10.33.13.824163@vscht.cz>

On Thu, 04 Oct 2007 20:16:14 -0700, goldtech wrote:

> This works OK. But I notice that if I enlarge the window after the
> script has run, the white listbox only gets "so" big while the grey
> background enlarges.
> 
> Is there a way to have it all white when I enlarge a window - like
> what normally happens?
> 
> 
> 
> from Tkinter import *
> root = Tk()
> root.title("Dirty Words")
> scrollbar = Scrollbar(root)
> scrollbar.pack(side=RIGHT, fill=Y)
> listbox = Listbox(root, bg='white', font = "Courier 16", width=60)
> listbox.pack()
> i='123456789abcdefghijklmnopqrstuvwxyz'
> for x in range(10):
>     listbox.insert(END, i)
> listbox.config(yscrollcommand=scrollbar.set)
> scrollbar.config(command=listbox.yview)
> mainloop()

try to change listbox.pack() to listbox.pack(expand=True, fill=BOTH)
.. is it that you want ?

 -mykhal


From OnCallSupport321 at gmail.com  Wed Oct 10 09:34:36 2007
From: OnCallSupport321 at gmail.com (OnCallSupport321 at gmail.com)
Date: Wed, 10 Oct 2007 06:34:36 -0700
Subject: Singleton
In-Reply-To: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
Message-ID: <1192023276.765950.198300@57g2000hsv.googlegroups.com>

Spring Python (http://springpython.python-hosting.com) offers a
singleton solution. You can mark up function calls to only be called
the first time, i.e. as singletons. The results are cached inside the
Spring Python IoC container, so the next time the function is called,
it returns the cached copy. Prototypes bypass the caching, and instead
allow the function to be called everytime. This also support the idea
of prototype functions contain references to singleton objects.

from springpython.context import *

class MyContainer(DecoratorBasedApplicationContext):
   def __init__(self):
      DecoratorBasedAppicationContext.__init__(self)

   @component(scope.SINGLETON) # You can leave off the argument, since
scope.SINGLETON is the default)
   def singletonComponent(self):
      return ["There can be only one!"]

   @component(scope.PROTOTYPE):
   def prototypeComponent(self):
      return ["I think I'm a clone now. There's another one of me
always hangin' around!"]

if __name__ == "__main__":
   appContext = MyContainer()

   obj1 = appContext.singletonComponent()
   obj2 = appContext.singletonComponent()
   if obj1 == obj2:
      print "These are the same object"
   else:
      print "Something is wrong!"

   obj3 = appContext.prototypeComponent()
   obj4 = appContext.prototypeComponent()
   if obj1 != obj2:
      print "These are different instances of the function call."
   else:
      print "These shouldn't be the same!"

See also http://springpython.python-hosting.com/wiki/InversionOfControl
and http://springpython.python-hosting.com/wiki/DecoratorBasedApplicationContext.



From jackieburr at gmail.com  Thu Oct  4 08:22:26 2007
From: jackieburr at gmail.com (jack)
Date: Thu, 04 Oct 2007 05:22:26 -0700
Subject: Check it out:Very good online resources,
	tons of cool men and beautiful women eager for lovers....:
Message-ID: <1191500546.165215.64860@n39g2000hsh.googlegroups.com>

Check it out:Very good online resources,tons of cool men and beautiful
women eager for lovers....:

1.Buy tickets online:
http://groups.google.com/group/all-good-things/web/want-to-buy-tickets-online-come-here

2.No 1 social network:
http://groups.google.com/group/all-good-things/web/1-social-network

3.Very good online resources:
http://groups.google.com/group/all-good-things/web/very-useful-websites

4.cool men and beautiful women eager for lovers
http://groups.google.com/group/all-good-things/web/tons-of-men-and-women-are-looking-lovers

5.Best affiliate programs:
http://www.apsense.com/abc/ymapsense/business.html



From zzbbaadd at aol.com  Thu Oct 25 13:36:36 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Thu, 25 Oct 2007 10:36:36 -0700
Subject: Python Windows Installation
In-Reply-To: <bgd0i3lmeemshhs0bakbof4ati38i8cijn@4ax.com>
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<bgd0i3lmeemshhs0bakbof4ati38i8cijn@4ax.com>
Message-ID: <1193333796.807911.106350@22g2000hsm.googlegroups.com>

On Oct 24, 11:22 pm, Tim Roberts <t... at probo.com> wrote:
> TheFlyingDutchman <zzbba... at aol.com> wrote:
>
> >I am trying to install Python 2.5 on Windows XP. It installs into the
> >root directory on C:\ instead of C:\Python25 which it shows by default
> >as what it plans to install to. Selecting D:\Python25 on a previous
> >iteration put the exe in D:\ and did not create a Python25 directory.
>
> Where did you get the installer?  I've installed Python on Windows many,
> many times, and have never seen this issue.
> --
> Tim Roberts, t... at probo.com
> Providenza & Boekelheide, Inc.

from python.org.   I doubt many people get this or it would be fixed
but it still is shocking how it can prompt me that the installation
directory exists - showing that it fully knows where it is supposed to
install it - and then go ahead and install it to the root directory
and claim success. It also uninstalls Python if you ask it to so any
screwy settings from a previous install should be removed after the
uninstall, but it also fails to install correctly after an uninstall.



From lucaberto at libero.it  Tue Oct 16 02:03:17 2007
From: lucaberto at libero.it (luca72)
Date: Mon, 15 Oct 2007 23:03:17 -0700
Subject: PyQt ProgressBar
In-Reply-To: <1192451049.060044.166830@i13g2000prf.googlegroups.com>
References: <1192451049.060044.166830@i13g2000prf.googlegroups.com>
Message-ID: <1192514597.432403.33340@e34g2000pro.googlegroups.com>

No one can help pls

Regards

Luca




From paul.hankin at gmail.com  Sat Oct 27 11:36:53 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Sat, 27 Oct 2007 15:36:53 -0000
Subject: good example of C extension for Mac OS X
In-Reply-To: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
References: <1193497860.746202.111240@o38g2000hse.googlegroups.com>
Message-ID: <1193499413.159576.189760@o38g2000hse.googlegroups.com>

On Oct 27, 4:11 pm, chewie54 <dfabrizi... at gmail.com> wrote:
> Does anyone now of a good example to use as template for a  C program
> extension that needs to be built on the Mac OS X.

There's good, basic examples in the documentation on extending python:
http://docs.python.org/ext/

--
Paul Hankin



From hniksic at xemacs.org  Mon Oct 29 18:46:34 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 29 Oct 2007 23:46:34 +0100
Subject: A class question
References: <mailman.567.1193646908.13605.python-list@python.org>
	<87ejfe457k.fsf@mulj.homelinux.net>
	<4725c510$0$4627$426a74cc@news.free.fr>
	<874pga3zo7.fsf@mulj.homelinux.net>
	<4725ea41$0$8018$426a74cc@news.free.fr>
	<87hcka2d76.fsf@mulj.homelinux.net>
	<47260805$0$5155$426a34cc@news.free.fr>
Message-ID: <87d4uxk08l.fsf@mulj.homelinux.net>

Bruno Desthuilliers <bruno.42.desthuilliers at wtf.websiteburo.oops.com>
writes:

>> It seems to me that in recent times more Python beginners come from
>> a Java background than from a C one.
>
> Java does have "container" variables for primitive types, and even
> for "references", Java's variables are more than names - they do
> hold type informations too. Now I don't pretend to know how this is
> really implemented, but AFAICT, and at least from a cognitive POV,
> Java's variables model looks very close to the C/C++ model.

While Java's variable declarations bear a superficial (syntactical)
similarity to C, their semantics is in fact equivalent to the
object-reference semantics we know in Python.  They implicitly refer
to objects allocated on the heap and, just like in Python, the same
object can be referenced by multiple variables.  If Java's model were
close to C/C++, that would not be possible without explicit
pointers/references since an object would be "contained" by the
variable.

Variables holding primitive types don't really influence the
variable/object relationship, since the values they hold are by nature
immutable and without identity.


From sajmikins at gmail.com  Sun Oct  7 11:00:07 2007
From: sajmikins at gmail.com (Simon Forman)
Date: Sun, 07 Oct 2007 08:00:07 -0700
Subject: Tkinter text widget
In-Reply-To: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
References: <1191727082.655903.15590@w3g2000hsg.googlegroups.com>
Message-ID: <1191769207.108962.65980@w3g2000hsg.googlegroups.com>

On Oct 6, 11:18 pm, goldtech <goldt... at worldpost.com> wrote:
> I thought the "DISABLED" made it so I could not edit it. But it also
> makes it so I can not scroll down. If you make the window smaller than
> the content then try to put a cursor in there to use up/down arrow you
> can't.
>
> What I want is not to be able to change text content, but no other
> action is disabled. Is this complicated to do?
>
> Thanks.
>
> from Tkinter import *
> root = Tk()
> text = Text(root, font=("Courier"))
> text.pack()
> i='123456789abcdefghijklmnopqrstuvwxyz\n'
> for x in range(30):
>     text.insert(END, i)
> text.config(state=DISABLED)
> mainloop()


I just tried this script.  You can select text and if you drap the
selection outside the window then scrolling occurs, also Tk's default
behavior of scrolling with the middle button still works (i.e. click-
and-drag with the middle button to scroll.)

The arrow keys don't scroll the window, but that's because either A.
the Text widget won't take 'focus' while disabled -or- B. the arrow
keys et. al. work through the cursor which isn't there in disabled
mode.  I'm guessing and I'm not sure which is right, or if it's
something else entirely.


Try adding a scrollbar widget and tying it to the Text (there are
webpages out there that describe how to do this),  I think this widget
would still get focus (since it's NOT disabled) and therefore be able
to scroll the Text.  Or try explicitly binding the arrow keys to
scroll commands.


~Simon



From jurgenex at hotmail.com  Wed Oct 24 18:40:34 2007
From: jurgenex at hotmail.com (Jürgen Exner)
Date: Wed, 24 Oct 2007 22:40:34 GMT
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
	<ffj1f3$fpp$2@online.de>
	<471fc967$0$13110$9b4e6d93@newsspool2.arcor-online.net>
Message-ID: <CRPTi.2859$f63.79@trndny03>

Wildemar Wildenburger wrote:
> Joachim Durchholz wrote:
>> And yes, it sucks in major ways.
>>
> Oh my God, I don't want to, but I just have to ask: Why?

Because TeX has nothing to do with either Perl, Python, Lisp, Java, or 
functional programming.

jue 




From jzgoda at o2.usun.pl  Fri Oct 19 06:45:06 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Fri, 19 Oct 2007 12:45:06 +0200
Subject: dynamic invoke
In-Reply-To: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
Message-ID: <ffa25s$c9g$1@nemesis.news.tpi.pl>

lukasz.f24 at gmail.com napisa?(a):

> Is there any way (other then eval) to invoke a method by passing
> method name in a string.
> It's very simple in php:
> $oFoo = new Foo();
> $dynamiMethod = "bar";
> $oFoo->$dynamiMethod();
> 
> Unfortunately I can't find a good solution to do the same thing in
> python. Does it have some build-in function to do it?

foo = getattr(module_or_object, 'function_name')
foo()

-- 
Jarek Zgoda
Skype: jzgoda | GTalk: zgoda at jabber.aster.pl | voice: +48228430101

"We read Knuth so you don't have to." (Tim Peters)


From mail at timgolden.me.uk  Sun Oct  7 07:47:29 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Sun, 07 Oct 2007 12:47:29 +0100
Subject: Problem using subprocess.Popen on windows
In-Reply-To: <bda7ac6d0710070307o96209a1r9b41690355440028@mail.gmail.com>
References: <bda7ac6d0710070307o96209a1r9b41690355440028@mail.gmail.com>
Message-ID: <4708C751.70404@timgolden.me.uk>

jorma kala wrote:
> I get an error that I don't understand when using the subprocess module 
> on Windows.
> I guess I'm missing out something very basic.
> For instance, to execute and capture the output of the ms-dos dir 
> command, I tried the following:
> 
> from subprocess import *
> 
> p1 = Popen(["dir"],  stdout=PIPE)
> output = p1.communicate()[0]
> 
> But I get a WindowsError : [Error 2]  File Not Found

That's because "dir" isn't an executable file in its
own right, merely a subcommand of the command shell.
Do this:

<code>
from subprocess import *

p1 = Popen ("dir", shell=True, stdout=PIPE)
print p1.communicate ()[0]

</code>

TJG


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Oct 26 13:27:08 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 26 Oct 2007 19:27:08 +0200
Subject: Python Windows Installation
References: <1193195493.086681.40570@t8g2000prg.googlegroups.com>
	<5o8s2bFlhd8uU2@mid.individual.net>
	<13i09eohrt6il52@corp.supernews.com>
	<5oc23kFm4aqfU1@mid.individual.net>
	<47210600$0$4375$9b4e6d93@newsspool4.arcor-online.net>
	<5oe457Fmh7lsU1@mid.individual.net>
	<4721ed72$0$4370$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: <5oembcFm9m14U1@mid.individual.net>

Wildemar Wildenburger wrote:

> Of course, but that would constitute "common practice". 

Ah, okay. That was what I actually meant ;)

> "Best practice" in my book is the one that causes the least
> trouble, which names-with-whitespace clearly don't. Though by this
> day and age, I admit that programs causing the trouble are the
> culprits and can be declared broken, not the admission of
> whitesapce. 

The last app I saw that had problems with whitespace was Worms 2
(1997). YMMV (and I'm interested in it).

Regards,


Bj?rn

-- 
BOFH excuse #165:

Backbone Scoliosis



From mark.dufour at gmail.com  Sun Oct 21 04:55:17 2007
From: mark.dufour at gmail.com (Mark Dufour)
Date: Sun, 21 Oct 2007 10:55:17 +0200
Subject: Shed Skin Python-to-C++ compiler 0.0.24, 0.0.25
Message-ID: <8180ef690710210155u4e26b53dk38087fffedabfab9@mail.gmail.com>

Hi all,

I've just released Shed Skin 0.0.25. Together with the (unannounced)
0.0.24 release, there have been some interesting changes. Most
importantly perhaps, Shed Skin now caches (most) 1-length strings,
which can improve performance dramatically for string-intensive
programs. I also performed a long-overdue rewrite of the virtual
function detection code, which should work much more reliably now, at
least for relatively simple cases :)

0.0.24:
-1-length string caching

0.0.25
-improved detection of virtual functions
-further set optimizations
-fix for extension modules and certain default arguments
-exhaustive checking of C++ keywords
-fix for some combinations of arguments to min, max
-several minor bug fixes

As always, I could really use more help in pushing Shed Skin forward.
Let me know if you'd like to help out, but are not sure where to
begin.

The Shed Skin homepage:
http://mark.dufour.googlepages.com


Thanks,
Mark.
--
"One of my most productive days was throwing away 1000 lines of code"
- Ken Thompson


From python.list at tim.thechases.com  Tue Oct  2 10:45:04 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 02 Oct 2007 09:45:04 -0500
Subject: access __doc__ from within function without reference to function
	name
In-Reply-To: <1191331567.944636.263140@y42g2000hsy.googlegroups.com>
References: <1191331567.944636.263140@y42g2000hsy.googlegroups.com>
Message-ID: <47025970.1080409@tim.thechases.com>

> The subject of this message might be a little cryptic, so here's an
> example of what I mean:
> 
> def foo():
>     """doc string of foo"""
>     print foo.__doc__
> 
>>>> foo()
> doc string of foo
> 
> What I want to know is whether it is possible to call __doc__ against
> some builtin method, like __func__ or something like that. So calling
> __doc__ without the functions name, something like this:
> 
> def foo():
>     """doc string of foo"""
>     print __func__.__doc__ # pseudo code
> 
> So basically, my question is: is there a way to access a function from
> within itself without using its name?


Well, I don't know if it's the best way to do it, but the 
following code I just threw together does the trick for me:

###########################################################
"A module docstring"
import inspect
def get_doc_string():
   frame = inspect.stack()[1]
   funcname = frame[3]
   try: # for straight functions
     return eval(funcname).__doc__
   except:
     locals = frame[0].f_locals
     try: # for object methods
       return getattr(locals["self"], funcname).__doc__
     except:
       try: # for class and module docstrings
         return locals["__doc__"]
       except:
         print "If you got here, there's something I missed"
         import pdb; pdb.set_trace()
         return funcname

if __name__ == "__main__":

   def outer_function():
     "A function docstring"
     s = get_doc_string()
     print s
     return s

   class Foo(object):
     "A class docstring"
     zip = get_doc_string()
     def bar(self):
       "A method's docstring"
       s = get_doc_string()
       print s
       return s

   def f1(func):
     "this is f1"
     s = func()
     print s
     return s

   test = outer_function()
   assert test == "A function docstring"
   foo = Foo()
   assert foo.bar() == "A method's docstring"
   print Foo.zip
   assert Foo.zip == "A class docstring"
   module_docstring = get_doc_string()
   print module_docstring
   assert module_docstring == "A module docstring"
   assert f1(get_doc_string) == "this is f1"

###########################################################

I couldn't find a handy way to get the actual 
function-object/class-object/module/method object for the given 
context without the convoluted try/except block.  Perhaps someone 
with more knowledge of the inspect module could reudce that do 
something far more simple.  There may also be problems if this is 
imported across modules.  But this might help point you in the 
right direction.

-tkc






From m.aschwanden at gmail.com  Sun Oct  7 09:52:15 2007
From: m.aschwanden at gmail.com (Dekker)
Date: Sun, 07 Oct 2007 13:52:15 -0000
Subject: Override 'and' and 'or'
Message-ID: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>

Is it possible to override 'and' and/or 'or'? I cannot find a special
method for it... __and__ and __rand__ and __or__ and __ror__ are for
binary manipulation... any proposals?

Have marvelous sunday,
Marco



From software at ginstrom.com  Wed Oct 24 21:17:26 2007
From: software at ginstrom.com (Ryan Ginstrom)
Date: Thu, 25 Oct 2007 10:17:26 +0900
Subject: list (range) syntax
In-Reply-To: <13hvq9cj6k9hf18@corp.supernews.com>
References: <pan.2007.10.24.22.44.28.712782@vscht.cz><1193268500.077940.182790@y27g2000pre.googlegroups.com>
	<13hvq9cj6k9hf18@corp.supernews.com>
Message-ID: <026b01c816a4$ce634900$0203a8c0@MOUSE>

> On Behalf Of Steven D'Aprano
> Because in common English, counting starts at 1 and ranges 
> normally include both end points (that is, it is a "closed" 
> interval). If you say "I'll be away from the 4th to the 7th" 
> and then turn up on the 7th, nearly everyone will wonder why 
> you're back a day early.

Actually, I think this illustrates the point about confusion, because in the
United States at least, "the 4th to the 7th" will not necessarily include
the 7th. That's why it's common to use circumlocutions like "the 4th through
the 7th" and "the 4th to the 7th, inclusive" when one wants to be sure.

At any rate, I also think that having range(1, 10) or a similar construct
mean one to ten (inclusive <g>) is a bad idea. Ruby's philosophy is
obviously different, which is probably fine as long as you know your
tradeoffs.

Regards,
Ryan Ginstrom



From jmg3000 at gmail.com  Mon Oct  8 02:44:21 2007
From: jmg3000 at gmail.com (John)
Date: Mon, 08 Oct 2007 06:44:21 -0000
Subject: setuptools without unexpected downloads
In-Reply-To: <1190907731.511106.42610@o80g2000hse.googlegroups.com>
References: <87ejgmklep.fsf@benfinney.id.au>
	<1190907731.511106.42610@o80g2000hse.googlegroups.com>
Message-ID: <1191825861.382843.101120@o80g2000hse.googlegroups.com>

On Sep 27, 11:42 am, Istvan Albert <istvan.alb... at gmail.com> wrote:
> On Sep 26, 2:09 am, Ben Finney <b... at benfinney.id.au> wrote:
>
> > behaviour with a specific invocation of 'setup.py'. But how can I
> > disallow this from within the 'setup.py' program, so my users don't
> > have to be aware of this unexpected default behaviour?
>
> I don't have the answer for this, but I can tell you that I myself
> dislike the auto-download behavior and I wish it worked differently.
>
> I've given up on setuptools/easy-install altogether. It is most
> annoying to end up with half a dozen unexpected packages.
>
> The default behavior should be to pop a question with a list of
> packages that will be downloaded (and have a flag that bypasses this).
> And of course being able to turn off this feature from setup.py.
>
> i.

I think you're exactly right, Istvan. Maybe someone will write a patch
for what you suggest.

I haven't done any packaging myself, but it would seem to me that
another trick users could resort to might be to look at the setup.py
setup() function's install_requires arg, and then try to install
what's listed there using their own system's package management
software.

I'm not exactly sure what the --no-deps arg to easy_install does. Does
it force the named package to install without its dependencies, or
does it give a package listing and then bail out without installing
anything? The docs don't seem to specify.

---John



From hschlierkamp at sense-of-africa.com.na  Wed Oct 17 05:32:03 2007
From: hschlierkamp at sense-of-africa.com.na (Heiko Schlierkamp)
Date: Wed, 17 Oct 2007 11:32:03 +0200
Subject: Please Help !!!
Message-ID: <108BF5E92DB9D711B75C00D0B7E1B9B203503592@8EMAIL1>

I need to update the virus program every day with the new dat file from
mcafee
I would like to us a Bat file to go to the web page and download the dat
file automatically to a specific Directory, that I have created, but my
problem lays in that the bat file will open the file to be downloaded but
the bat file does not confirm the save button so that it start to download
the file, that I still need to do manual. Please advice me with what still
need to be done!!
Your help will be very appreciated!!!

I have added the file so you can see what it does exactly!!

> Heiko Schlierkamp
> SENSE OF AFRICA - Namibia 
> E-mail: hschlierkamp at sense-of-africa.com.na 
> Website: www.sense-of-africa.com 
> Tel: +264 61 275300  
> Fax: +264 61 263417 
> PO Box 2058, Windhoek, Namibia 
 <<Superdat.rar>> 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Superdat.rar
Type: application/octet-stream
Size: 211 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20071017/83e480c1/attachment.obj>

From hniksic at xemacs.org  Wed Oct 17 05:34:37 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 17 Oct 2007 11:34:37 +0200
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
Message-ID: <8764165bki.fsf@mulj.homelinux.net>

paul.melis at gmail.com writes:

> Right, the paragraph is actually pretty clear after a second
> reading.  I find it surprising nonetheless, as it's easy to forget
> to return a result when you're implementing a method that does an
> in-place operation, like __iadd__:

I've recently been bitten by that, and I don't understand the
reasoning behind __iadd__'s design.  I mean, what is the point of an
*in-place* add operation (and others) if it doesn't always work
in-place?


From bj_666 at gmx.net  Mon Oct 22 18:22:44 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 22 Oct 2007 22:22:44 GMT
Subject: for loop
References: <mailman.347.1193091482.13605.python-list@python.org>
Message-ID: <5o4m5kFktnthU6@mid.uni-berlin.de>

On Mon, 22 Oct 2007 18:17:56 -0400, Shawn Minisall wrote:

> #Intro
>     print "*********************************************"
>     print  "WELCOME TO THE POPULATION GROWTH CALCULATOR"
>     print "*********************************************"
> 
>     print "This program will predict the size of a population of organisms."
>     print
>     print
>     organisms=input("Please enter the starting number of organisms: ")
> 
>     increase=input("Please enter the average daily population increase 
> as a percentage (20% = .20): ")
> 
>     days=input("Please enter the number of days that they will multiply: ")
>     
> print "         Day                                    Population"
> print "----------------------------------------------------------"
> 
> 
> for p in range (days):
> 
>     population = organisms * population * increase
> 
>     print days,
> 
>     print "\t\t\t\t",population
> 
> I'm having problems with my for loop here to calculate estimated 
> population output to a table.  Instead of knowing how much I want to 
> loop it, the loop index is going to be whatever number of days the user 
> enters.  When I run my program, it asks the 3 questions above but then 
> just dead stops at a prompt which leads me to believe there's something 
> wrong with my loop.

It should not run at all as it is indented inconsistently.  If that
problem is corrected it will stop with a `NameError` because you try to
read `population` before anything was assigned to it.

Ciao,
	Marc 'BlackJack' Rintsch


From mkb at incubus.de  Wed Oct 10 04:11:15 2007
From: mkb at incubus.de (Matthias Buelow)
Date: Wed, 10 Oct 2007 10:11:15 +0200
Subject: Cantankerous trolliness ad infinitum, was: Re: The Modernization
	of Emacs: terminology buffer and keybinding
In-Reply-To: <1191978311.987341.271000@r29g2000hsg.googlegroups.com>
References: <87tzt3ihev.fsf@kobe.laptop><m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
	<1191978311.987341.271000@r29g2000hsg.googlegroups.com>
Message-ID: <5n3fp4Ffvt8mU1@mid.dfncis.de>

nebulous99 at gmail.com wrote:
^^^^^^^^^^^^^^^^^^^^^

Is this some sport of yours to constantly create new gmail accounts and
spam Usenet?

> So you assert, but "man" bears a much closer resemblance to "manus"
> than it does to "mens".

This is irrelevant. Consult an etymological dictionary.


F'up-to: comp.lang.lisp, where I'm reading this.


From python.list at tim.thechases.com  Tue Oct  2 11:02:00 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 02 Oct 2007 10:02:00 -0500
Subject: Dictionary invalid token error
In-Reply-To: <fdtlqo$t1t$1@solaris.cc.vt.edu>
References: <fdtlqo$t1t$1@solaris.cc.vt.edu>
Message-ID: <47025D68.1060403@tim.thechases.com>

> This works:
> 
>  >>> area_group = {001:06, 002:04, 003:04, 006:9}
> 
> This does not (one the end, 09 is used instead of 9)
> 
>  >>> area_group = {001:06, 002:04, 003:04, 006:09}
>    File "<stdin>", line 1
>      area_group = {001:06, 002:04, 003:04, 006:09}
> SyntaxError: invalid token
> 
> Why does 09 cause an invalid token while 9 does not?

Numbers with leading zeros are parsed as octal.  8 and 9 are 
invalid digits in octal.  Thus, it falls over.  00 through 07 
will work fine, but 08 and 09 will go kaput.

http://docs.python.org/ref/integers.html

-tkc





From paul.hankin at gmail.com  Thu Oct  4 19:11:14 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 04 Oct 2007 23:11:14 -0000
Subject: Dynamically creating class properties
In-Reply-To: <1191538542.328030.21220@r29g2000hsg.googlegroups.com>
References: <fe3jv0$lnc$1@news1.carnet.hr>
	<1191538542.328030.21220@r29g2000hsg.googlegroups.com>
Message-ID: <1191539474.498116.291880@w3g2000hsg.googlegroups.com>

On Oct 4, 11:55 pm, Paul Hankin <paul.han... at gmail.com> wrote:
> On Oct 4, 9:59 pm, Karlo Lozovina <_karlo_ at _mosor.net> wrote:
>
>
>
> > Hi all,
>
> > this is my problem: lets say I have a arbitrary long list of attributes
> > that I want to attach to some class, for example:
>
> >      l = ['item1', 'item2', 'item3']
>
> > Using metaclasses I managed to create a class with those three
> > attributes just fine. But now I need those attributes to be properties,
> > so for example if 'A' is my constructed class, and 'a' an instance of
> > that class:
>
> >     a = A()
>
> > Now if I write:
>
> >     a.item1 = 'something'
> >     print a.item1
>
> > I want it to be actually:
>
> >     a.setitem1('something')
> >     print a.getitem1
>
> > Any idea how to do that with metaclasses and arbitrary long list of
> > attributes? I just started working with them, and it's driving me nuts :).
>
> No metaclasses, but how about this?
>
> def make_class(name, attributes):
>     # Build class dictionary.
>     d = dict(_attributes=list(attributes))
>     # Add in getters and setters from global namespace.
>     for attr in attributes:
>         d[attr] = property(globals()['get' + attr],
>             globals()['set' + attr])
>     # Construct our class.
>     return type(name, (object,), d)

Sorry, I'm adding '_attributes' unnecessarily to the class dictionary.
The dictionary should be just initialised with d = {} before the
properties are added.

--
Paul Hankin



From bj_666 at gmx.net  Sun Oct 28 04:27:48 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 28 Oct 2007 08:27:48 GMT
Subject: insert string problems..
References: <1193556274.869444.28560@o80g2000hse.googlegroups.com>
Message-ID: <5oivg4Fmqu4gU1@mid.uni-berlin.de>

On Sun, 28 Oct 2007 00:24:34 -0700, Abandoned wrote:

> Hi..
> I want to insert some data to postgresql..
> My insert code:
> yer="019"
> cursor.execute("INSERT INTO ids_%s (id) VALUES (%s)", (yer, id))
> I don't want to use % when the insert operation.
> 
> in this code give me this error:
> psycopg2.ProgrammingError: syntax error at or near "'019'"
> LINE 1: SELECT link_id from linkkeywords_'019'

You are executing an INSERT and get an error about a SELECT!?  Hard to
believe!

But in both SQL statements you try to insert table names via placeholders.
This doesn't work as those placeholders are *values* that will be escaped.
The errormessage is quite clear IMHO::

  SELECT link_id from linkkeywords_'019'

That's not a valid table name because of the ' that got added when
inserting the *value* '019'.

Starting to number tables and the need to dynamically create table names is
usually sign of a bad schema design BTW.

Ciao,
	Marc 'BlackJack' Rintsch


From david at nospam.spam  Wed Oct  3 01:00:51 2007
From: david at nospam.spam (david)
Date: Wed, 03 Oct 2007 15:00:51 +1000
Subject: s.split() on multiple separators
In-Reply-To: <mailman.1325.1191209706.2658.python-list@python.org>
References: <1191160394.870241.171200@w3g2000hsg.googlegroups.com>	<bkRLi.1723$hI7.1162@newssvr17.news.prodigy.net>	<1191179790.181227.323480@k79g2000hse.googlegroups.com>
	<mailman.1325.1191209706.2658.python-list@python.org>
Message-ID: <13g68g0epsnapfd@corp.supernews.com>

Gabriel Genellina wrote:
> En Sun, 30 Sep 2007 16:16:30 -0300, <mrkafk at gmail.com> escribi?:
> 
>>> From my POV, if I want sequence from here to there, it should include
>> both here and there.
>>
>> I do understand the consequences of making high bound exclusive, which
>> is more elegant code: xrange(len(c)). But it does seem a bit
>> illogical...
> 
> See this note from E.W.Dijkstra in 1982 where he says that the Python 
> convention is the best choice.
> http://www.cs.utexas.edu/users/EWD/transcriptions/EWD08xx/EWD831.html
> 

The only thing I agreed with was his conclusion. Clever man.

[david]


From JohnRoth1 at jhrothjr.com  Mon Oct 29 13:39:30 2007
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: Mon, 29 Oct 2007 17:39:30 -0000
Subject: coverage.py: "Statement coverage is the weakest measure of code
	coverage"
In-Reply-To: <87odeifw7b.fsf@benfinney.id.au>
References: <87bqaihmq7.fsf@benfinney.id.au>
	<1193624413.723453.71700@22g2000hsm.googlegroups.com>
	<87odeifw7b.fsf@benfinney.id.au>
Message-ID: <1193679570.080678.69340@y42g2000hsy.googlegroups.com>

On Oct 28, 9:15 pm, Ben Finney <bignose+hates-s... at benfinney.id.au>
wrote:
> Kay Schluehr <kay.schlu... at gmx.net> writes:
> > I used to write once a coverage tool ( maybe I can factor this out
> > of my tool suite some time )
>
> That'd be wonderful. I'd like to see comparisons between different
> test-coverage tools, just as we have the different but comparable
> 'pyflakes' and 'pylint' code inspection tools.
>
> > Given it's nature it might act transformative. So a statement:
>
> > if a and b:
> >     BLOCK
>
> > can be transformed into
>
> > if a:
> >     if b:
> >         BLOCK
>
> I don't see that this actually helps in the cases described in the
> original post. The lack of coverage checking isn't "are both sides of
> an 'and' or 'or' expression evaluated", since that's the job of the
> language runtime, and is outside the scope of our unit test.
>
> what needs to be tested is "do the tests execute both the 'true' and
> 'false' branches of this 'if' statement", or "do the tests exercise
> the 'no iterations' case for this loop", et cetera. That is, whether
> all the functional branches are exercised by tests, not whether the
> language is parsed correctly.

Since 'and' and 'or' are short-circuit evaluations, you do need
something to determine if each piece was actually executed. Turning it
into an if-else construct would do this nicely.

John Roth

>
> --
>  \    "Know what I hate most? Rhetorical questions."  -- Henry N. Camp |
>   `\                                                                   |
> _o__)                                                                  |
> Ben Finney




From bluszcz at jabberpl.org  Wed Oct 17 09:33:10 2007
From: bluszcz at jabberpl.org (=?UTF-8?B?UmFmYcWC?= Zawadzki)
Date: Wed, 17 Oct 2007 15:33:10 +0200
Subject: Write by logging.FileHandler to one file by many processess
Message-ID: <ff5397$j9g$1@nemesis.news.tpi.pl>

Hello.

As I saw in logging source - there is no lock per file during making emit()
(only lock per thread).

So, my question is - is it safe to log into one file using many processess
uses logging logger?

Cheers,
-- 
bluszcz
http://vegan-planet.net


From besturk at gmail.com  Sat Oct  6 07:01:21 2007
From: besturk at gmail.com (Abandoned)
Date: Sat, 06 Oct 2007 04:01:21 -0700
Subject: Segmentation fault..
Message-ID: <1191668481.171014.54840@57g2000hsv.googlegroups.com>

Hi..
I run a my script and 3-4 minutes later give me an error "segmentation
fault".
What is the reason of this error ?

I use in my script:
Threading
Psycopg2
open & write to txt
urlopen

My platform is ubuntu linux.

I'm sorry my bad english.
King regards..



From ladaan at iptel.org  Thu Oct 11 18:10:20 2007
From: ladaan at iptel.org (Ladislav Andel)
Date: Fri, 12 Oct 2007 00:10:20 +0200
Subject: external access to instances
Message-ID: <470E9F4C.4080105@iptel.org>

Hello,
I have an application which is running in a loop(client/server app using 
twisted and reactor) and where are kept list of instances in memory.
Each instance has it's own loop and it periodically sends requests to 
given network endpoints.
I would like to use a tool(module) which accesses this list of instances 
and the access would be quite occasional because it would be based
on committing changes manually.
How could I get to the list of instances since the tool is not running 
in the main loop of the application?
There should be probably something listening in the main loop and if I 
want to commit changes it would access the main loop and add or delete 
an instance from the list. (adding and deleting is against database so I 
just need simply to run the function in the main loop which will do the 
update)

Any ideas with working approach?

Thank you.
Lada



From coolman_suk at yahoo.com  Tue Oct 16 13:46:10 2007
From: coolman_suk at yahoo.com (coolman_suk at yahoo.com)
Date: Tue, 16 Oct 2007 17:46:10 -0000
Subject: Problem with proxies
In-Reply-To: <mailman.68.1192547833.13605.python-list@python.org>
References: <mailman.68.1192547833.13605.python-list@python.org>
Message-ID: <1192556770.939866.249160@e9g2000prf.googlegroups.com>

i have never used proxies, in college it works fine dont know abt ur
wipro settings.
anyway try this http://docs.python.org/lib/urllib2-examples.html

then l8tr try this http://docs.python.org/lib/module-urllib2.html






From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Tue Oct 16 13:16:35 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Tue, 16 Oct 2007 19:16:35 +0200
Subject: Why does the message send only once?
References: <1192550131.869157.88130@q5g2000prf.googlegroups.com>
Message-ID: <5nk9vkFiq3f4U1@mid.individual.net>

danfolkes wrote:

> Why does the message send only once?

Because your server is designed to only accept one connection, wait
forever except there is an exception, and quit thereafter.

> def Server(address):
>     [...]
>     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>     s.bind((HOST, PORT))
>     s.listen(1)                 # ----- set up listening
>     conn, addr = s.accept()     # ----- accept one connection
>     print 'Connected by', addr
>     while 1:
>         print message
>         time.sleep(1)
>         data = conn.recv(1024)  # ----- receive stuff
>         #if not data: break
>         conn.send(data)         # ----- send stuff
>     conn.close()                # ----- close connection
>                                 # ----- quit

Personally, I like the Twisted framework more than low-level socket
interfaces. Consider giving it a try -- your code will be much
easier to read and maintain. You don't have to waste time
implementing the server or client basics but can fully concentrate
on your protocol(s).

Regards,


Bj?rn

-- 
BOFH excuse #168:

le0: no carrier: transceiver cable problem?



From bignose+hates-spam at benfinney.id.au  Wed Oct 17 20:33:58 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 18 Oct 2007 10:33:58 +1000
Subject: Pull Last 3 Months
References: <1192638812.176235.232060@z24g2000prh.googlegroups.com>
	<47167F80.8080208@tim.thechases.com>
	<mailman.144.1192661793.13605.python-list@python.org>
	<1192665202.277171.132880@t8g2000prg.googlegroups.com>
Message-ID: <87zlyhz2fd.fsf@benfinney.id.au>

Paul Hankin <paul.hankin at gmail.com> writes:

> import datetime
> 
> months = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split()
> 
> def last_months(n):
>     month = datetime.date.today().month
>     return [months[(month - i - 1) % 12] for i in range(n)]
> 
> print last_months(3)

Heck you don't even need the magic number 12 in there.

    import datetime

    months = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split()
    def last_months(n):
        month = datetime.date.today().month
        return [months[(month - i - 1) % len(months)
                for i in range(n)]

In general I try to avoid magic numbers: always be explicit about the
semantic purpose of the number, either by binding a meaningful name to
it and only using that reference thereafter, or showing how that value
is derived.

-- 
 \      "I hope some animal never bores a hole in my head and lays its |
  `\   eggs in my brain, because later you might think you're having a |
_o__)          good idea but it's just eggs hatching."  -- Jack Handey |
Ben Finney


From kyosohma at gmail.com  Wed Oct 24 10:07:11 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Wed, 24 Oct 2007 14:07:11 -0000
Subject: Is this a wx bug?
In-Reply-To: <ffm2ab01btn@news4.newsguy.com>
References: <ffm2ab01btn@news4.newsguy.com>
Message-ID: <1193234831.163912.8930@i13g2000prf.googlegroups.com>

On Oct 23, 7:06 pm, Chris Carlen <crcarleRemoveT... at BOGUSsandia.gov>
wrote:
> Hi:
>
> #!/usr/bin/env python
>
> """From listing 3.3 in 'wxPython in Action'
> Demonstrates that something funny happens when you click&hold in the
> frame, then drag the mouse over the button window.  The
> wx.EVT_ENTER_WINDOW event is missed.  The wx.EVT_LEAVE_WINDOW event is
> NOT missed when you click&hold the mouse button over the button, and
> leave the button window."""
>
> import wx
>
> class MouseEventFrame(wx.Frame):
>      def __init__(self, parent, id):
>          wx.Frame.__init__(self, parent, id, title="Listing 3.3",
> size=(300, 100))
>          self.panel = wx.Panel(self)
>          self.button = wx.Button(self.panel, label="Not over", pos=(100,
> 15))
>          self.Bind(wx.EVT_BUTTON, self.OnButtonClick, self.button)
>          self.button.Bind(wx.EVT_ENTER_WINDOW, self.OnEnterWindow)
>          self.button.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)
>
>      # This is not critical to demonstrating the 'bug', but just provides
>      # feedback that the wx.EVT_BUTTON events are working correctly
>      # in relation to entering/leaving the button window.
>      def OnButtonClick(self, event):
>          if self.panel.GetBackgroundColour() == "Green":
>              self.panel.SetBackgroundColour("Red")
>          else: self.panel.SetBackgroundColour("Green")
>          self.panel.Refresh()
>
>      def OnEnterWindow(self, event):
>          self.button.SetLabel("Over")
>          event.Skip()
>
>      def OnLeaveWindow(self, event):
>          self.button.SetLabel("Not over")
>          event.Skip()
>
> if __name__ == '__main__':
>      app = wx.PySimpleApp()
>      frame = MouseEventFrame(None, id=-1)
>      frame.Show()
>      app.MainLoop()
>
> --
> Good day!
>
> ________________________________________
> Christopher R. Carlen
> Principal Laser&Electronics Technologist
> Sandia National Laboratories CA USA
> crcarleRemoveT... at BOGUSsandia.gov
> NOTE, delete texts: "RemoveThis" and
> "BOGUS" from email address to reply.

I cannot replicate this issue. It works correctly for me with Python
2.4, wxPython 2.8.4.2 (msw-unicode) on Windows XP SP2.

What version of Python/wxPython are you using? OS? It may just be that
you need to upgrade your wxPython or it's a bug on Mac/Linux. You
should post this to the wxPython mailing group here: http://www.wxpython.org/maillist.php

Mike



From dannagle at verizon.net  Sun Oct 21 10:37:23 2007
From: dannagle at verizon.net (Dan Nagle)
Date: Sun, 21 Oct 2007 14:37:23 GMT
Subject: ACM SIGAPL / APL2007 Conference / Montreal / one week away
In-Reply-To: <471b2ef9$0$5050$39db0f71@news.song.fi>
References: <47133159.9010204@acm.org>
	<1192920380.625668.221960@i13g2000prf.googlegroups.com>
	<1192954949.817248.242120@y27g2000pre.googlegroups.com>
	<471b2ef9$0$5050$39db0f71@news.song.fi>
Message-ID: <DuJSi.1103$0l4.173@trnddc08>

Hello,

Can we please have a little trimming of newsgroups?

Fortran's character set is a nice safe subset
of seven-bit ASCII.

Veli-Matti wrote:
> Gosi wrote:
> ..
>> I can not use the APL character set at all.
>> It is too mixed up with my national characters.
> 
> What about a unicode version of APL?
> 
> Honestly, I cannot use J because it mixes with all
> the characters I use... ;)
> -Veli-Matti
> 
> 
> 
> 


-- 

Dan Nagle
Purple Sage Computing Solutions, Inc.


From http  Thu Oct 18 01:00:24 2007
From: http (Paul Rubin)
Date: 17 Oct 2007 22:00:24 -0700
Subject: Last iteration?
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
	<1192605396.249377.217430@i38g2000prf.googlegroups.com>
	<1192619565.311026.38160@v23g2000prn.googlegroups.com>
	<1192661157.684855.325510@z24g2000prh.googlegroups.com>
Message-ID: <7xabqh585z.fsf@ruckus.brouhaha.com>

Raymond Hettinger <python at rcn.com> writes:
> We need a C-speed verion of the lambda function, something like a K
> combinator that consumes arguments and emits constants.

Some discussion of this is at <http://bugs.python.org/issue1673203>.
I had suggested implementing K through an optional second arg for a
proposed identity function but everyone hated that.  I'm amused.  I
had suggested it because I thought that it would be easier than
getting two separate functions accepted.


From zyzhu2000 at gmail.com  Wed Oct 24 12:30:30 2007
From: zyzhu2000 at gmail.com (beginner)
Date: Wed, 24 Oct 2007 16:30:30 -0000
Subject: Better writing in python
In-Reply-To: <slrnfhuk7c.p8a.hat@se-162.se.wtb.tue.nl>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
	<slrnfhuhcg.n4.horpner@FIAD06.norwich.edu>
	<slrnfhuk7c.p8a.hat@se-162.se.wtb.tue.nl>
Message-ID: <1193243430.337296.160660@t8g2000prg.googlegroups.com>

On Oct 24, 9:04 am, "A.T.Hofkamp" <h... at se-162.se.wtb.tue.nl> wrote:
> > On 2007-10-24, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
> > I'm just wondering, if I could write a in a "better" way this
> > code
>
> > lMandatory = []
> > lOptional = []
> > for arg in cls.dArguments:
> >   if arg is True:
> >     lMandatory.append(arg)
> >   else:
> >     lOptional.append(arg)
> > return (lMandatory, lOptional)
>
> > I think there is a better way, but I can't see how...
>
> You can do it shorter, not sure that it also qualifies as better....
>
> d = { True : [] , False : [] }
> for arg in cls.arguments:
>   d[arg == True].append(arg)
>
> return d[True], d[False]
>
> One potential problem here is that 'arg == True' may not be the same as 'if
> arg:'. I couldn't come up with a better equivalent expression, maybe one of the
> other readers knows more about this?
>
> Albert

d[bool(arg)].append(arg) resolves your concern?



From hniksic at xemacs.org  Wed Oct 17 07:41:06 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 17 Oct 2007 13:41:06 +0200
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
Message-ID: <871wbu55pp.fsf@mulj.homelinux.net>

Duncan Booth <duncan.booth at invalid.invalid> writes:

> Hrvoje Niksic <hniksic at xemacs.org> wrote:
>
>> I've recently been bitten by [rebinding the var to what __iadd__
>> returns], and I don't understand the reasoning behind __iadd__'s
>> design.  I mean, what is the point of an *in-place* add operation
>> (and others) if it doesn't always work in-place?
>> 
> A very common use case is using it to increment a number:

I'm aware of that; but remember that there's still __add__.  It would
be sufficient for numbers not to implement __iadd__.  And, in fact,
they already don't:

>>> 1 .__add__(1)
2
>>> 1 .__iadd__(1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'int' object has no attribute '__iadd__'

The current implementation of += uses __add__ for addition and
__iadd__ for addition that may or may not be in-place.  I'd like to
know the rationale for that design.


From jeffober at gmail.com  Tue Oct 30 08:44:47 2007
From: jeffober at gmail.com (Jeff)
Date: Tue, 30 Oct 2007 12:44:47 -0000
Subject: Readline and record separator
In-Reply-To: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
Message-ID: <1193748287.311630.74090@22g2000hsm.googlegroups.com>

If it's a short file you could slurp the entire file and then split it
however you like using regular expressions.

I'm not sure if you can alter it, but os.linesp holds the value that
is accessed when file.readlines() splits lines.  Conceivably, if it
were set to 'FOO', 'FOO' would be used to determine the EOL string.



From kw at codebykevin.com  Tue Oct 16 14:56:08 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Tue, 16 Oct 2007 14:56:08 -0400
Subject: Build Python 2.5 against Tk 8.5
In-Reply-To: <471505D5.7010501@v.loewis.de>
References: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>
	<4714D34C.4050603@v.loewis.de> <4714D4AB.3080103@codebykevin.com>
	<471505D5.7010501@v.loewis.de>
Message-ID: <47150948.3070502@codebykevin.com>

Martin v. L?wis wrote:

> 
> Can you please clarify what you mean by "stock Python installation"?
> I just built Python 2.5.1 with Tk 8.5 on Debian unstable, and it works
> fine.

OK, that's good to know. I'm using the precompiled Mac OS X build of 
2.5.1 from python.org.

>
> It's still not clear. I'm the current maintainer of the _tkinter module,
> and I can assert that _tkinter.c does *not* hard-code Tk 8.4. As you
> refer to _tkinter.so, it appears you are talking about a precompiled
> version - did you try to build Python yourself?

I'll try to build Python from source and link it against Tk 8.5.
-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From ptmcg at austin.rr.com  Fri Oct 12 08:36:38 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Fri, 12 Oct 2007 05:36:38 -0700
Subject: matching a street address with regular expressions
In-Reply-To: <1192169278.464170.214930@e34g2000pro.googlegroups.com>
References: <505641.42832.qm@web51601.mail.re2.yahoo.com>
	<4704DD04.4020304@bigfoot.com>
	<mailman.32.1192035770.927.python-list@python.org>
	<XQCPi.2645$sm6.783@nlpi069.nbdc.sbc.com>
	<1192169278.464170.214930@e34g2000pro.googlegroups.com>
Message-ID: <1192192598.972268.73600@v23g2000prn.googlegroups.com>

On Oct 12, 1:07 am, Paul McGuire <pt... at austin.rr.com> wrote:
> On Oct 11, 11:50 pm, John Nagle <na... at animats.com> wrote:
>
>
>
> >     If anyone has a first-rate address parser in Python that will cover
> > most of the developed world, I'd like to talk to them.
>
> >                                 John Nagle
> >                                 SiteTruth
>
> The pyparsing examples page includes a street address parser (http://
> pyparsing.wikispaces.com/space/showimage/streetAddressParser.py) that
> will handle these test cases:
>
>     100 South Street
>     123 Main
>     221B Baker Street
>     10 Downing St
>     1600 Pennsylvania Ave
>     33 1/2 W 42nd St.
>     454 N 38 1/2
>     21A Deer Run Drive
>     256K Memory Lane
>     12-1/2 Lincoln
>     23N W Loop South
>     23 N W Loop South
>     25 Main St
>     2500 14th St
>     12 Bennet Pkwy
>     Pearl St
>     Bennet Rd and Main St
>     19th St
>
> -- Paul

Here are the results from parsing 3120 De la Cruz Boulevard:

['3120', 'De la Cruz', 'Boulevard']
- name: De la Cruz
- number: 3120
- street: ['3120', 'De la Cruz', 'Boulevard']
  - name: De la Cruz
  - number: 3120
  - type: Boulevard
- type: Boulevard

-- Paul



From ameet.nanda at wipro.com  Tue Oct  9 03:58:29 2007
From: ameet.nanda at wipro.com (Ameet Nanda)
Date: Tue, 09 Oct 2007 13:28:29 +0530
Subject: Query
Message-ID: <1191916709.9164.41.camel@ameet>


Hi,
I am a Py Newbie. I am learning to write python scripts on Linux , I
want to know what to do in order to get the executable file as a binary.
Because now I run it by simply using the python compiler every time to
run the scripts

$> python scriptfile.py

I want to make a binary file , which would execute on it's own.

-Nax0r



The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. 

WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email.
 
www.wipro.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071009/ef216fb8/attachment.html>

From george.sakkis at gmail.com  Fri Oct 12 15:59:49 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Fri, 12 Oct 2007 19:59:49 -0000
Subject: Declarative properties
In-Reply-To: <mailman.142.1192215368.927.python-list@python.org>
References: <1192103298.065386.243670@o3g2000hsb.googlegroups.com>
	<5n6j5nFghr61U4@mid.uni-berlin.de>
	<1192107893.492826.233730@d55g2000hsg.googlegroups.com>
	<5n6np4Fghr61U6@mid.uni-berlin.de>
	<mailman.99.1192124809.927.python-list@python.org>
	<470f2522$0$12106$426a74cc@news.free.fr>
	<mailman.142.1192215368.927.python-list@python.org>
Message-ID: <1192219189.132014.88860@q3g2000prf.googlegroups.com>

On Oct 12, 2:55 pm, Dan Stromberg <dstrombergli... at gmail.com> wrote:

> If you have a program that needs to perform well, you're much better off
> coding your classes the best way you know how from a Software Engineering
> perspective, and using pysco or shedskin or pypy or similar to
> improve performance.

"best way you know how from a Software Engineering" != "best way to do
it in less flexible languages that will go unnamed, such as Java"

You seem to conflate these two.

George



From seb.haase at gmail.com  Mon Oct  1 04:04:53 2007
From: seb.haase at gmail.com (seb.haase at gmail.com)
Date: Mon, 01 Oct 2007 01:04:53 -0700
Subject: PyOpenGL without SetupTools
Message-ID: <1191225893.485450.325090@50g2000hsm.googlegroups.com>

Hi,
I am distributing a package with a precompiled collection of modules
and packages useful for Python based medical/biological/astronomical
image analysis and algorithm development. (Codename: Priithon).
For Priithon I put all modules/packages in a simple / single directory
(tree) including one starting batch/script file. This script sets up
PYTHONPATH to find modules at this place.
It works fine for Windows,Linux and Mac-OSX.

Now I want to upgrade everything to Python 2.5  and thought it might
be time get PyOpengl version 3 (aka. pyOpengl-ctypes).

The problem at hand is now that PyOpenGL  uses "all this setup-tools
machinery" just to initialize the formathandlers for the different
ways to deal with arrays. (I really need only numpy support !)
This is done via the pkg_resources mechanism called "entry_points".

Can I include a simple non-system-install of pkg_resources that makes
at least the entry_point stuff work ?  Where do I put pyOpenGL's
"entry_points.txt"  file ?

Thanks,
Sebastian Haase
MDC Berlin



From grante at visi.com  Sun Oct 28 00:24:11 2007
From: grante at visi.com (Grant Edwards)
Date: Sun, 28 Oct 2007 04:24:11 -0000
Subject: Unix domain socket in python example?
References: <1193533482.222474.119600@v3g2000hsg.googlegroups.com>
Message-ID: <13i83nb38p5sh76@corp.supernews.com>

On 2007-10-28, wsguglielmetti at gmail.com <wsguglielmetti at gmail.com> wrote:

> Can someone please point me to some resource in the internet
> that have a code like that one in a fashion that I can adapt
> it?

http://docs.python.org/lib/socket-example.html

It's trivial to change it from INET to UNIX domain.

> Or maybe post a example code here in the forum..



# Echo server program
import socket,os

s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
try:
    os.remove("/tmp/socketname")
except OSError:
    pass
s.bind("/tmp/socketname")
s.listen(1)
conn, addr = s.accept()
while 1:
    data = conn.recv(1024)
    if not data: break
    conn.send(data)
conn.close()


# Echo client program
import socket

s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect("/tmp/socketname")
s.send('Hello, world')
data = s.recv(1024)
s.close()
print 'Received', repr(data)



-- 
Grant Edwards                   grante             Yow!  Look!! Karl Malden!
                                  at               
                               visi.com            


From kyosohma at gmail.com  Fri Oct 26 08:59:04 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Fri, 26 Oct 2007 12:59:04 -0000
Subject: Mouse hover event in wxpython
In-Reply-To: <1193388959.145006.293510@50g2000hsm.googlegroups.com>
References: <1193388959.145006.293510@50g2000hsm.googlegroups.com>
Message-ID: <1193403544.622992.121820@o80g2000hse.googlegroups.com>

On Oct 26, 3:55 am, sundarvenkata <sundarvenk... at gmail.com> wrote:
> Hi All,
>
> Can somebody tell me if there is an event to indicate mouse hover over
> a control in wxPython? EVT_MOTION does not seem to cut it.
>
>  Thanks in advance,
> Sundar

What are you trying to do? I use EVT_MOTION for mouse hovering and it
works great in my application. You might try EVT_ENTER_WINDOW too.

See also:

http://www.wxpython.org/docs/api/wx.MouseEvent-class.html

Larry is right. The wxPython mailing list would give you even more
accurate answers.

Mike



From martin at marcher.name  Sun Oct 28 12:00:21 2007
From: martin at marcher.name (Martin Marcher)
Date: Sun, 28 Oct 2007 17:00:21 +0100
Subject: os.walk and recursive deletion
In-Reply-To: <5ohbc1Fmgu6mU4@mid.uni-berlin.de>
References: <mailman.510.1193501272.13605.python-list@python.org>
	<5ohbc1Fmgu6mU4@mid.uni-berlin.de>
Message-ID: <5fa6c12e0710280900j46750aa0sc59b13d11fc458e8@mail.gmail.com>

27 Oct 2007 17:38:10 GMT, Marc 'BlackJack' Rintsch <bj_666 at gmx.net>:
> On Sat, 27 Oct 2007 18:07:44 +0200, Martin Marcher wrote:
> > I'm playing around with os.walk and I made up del_tree(path) which I
> > think is correct (in terms of the algorithm, but not as python wants
> > it :)).
>
> It's not correct in terms of the algorithm if you take the algorithm of
> `os.walk()` into the equation.
>
> `os.walk()` is itself diving recursivly into the subdirectories?

True but isn't the problem that I need either backtracking to remember
which directories are empty and thus can be deleted or that I need to
do another recursion (like in my function) which returns as soon as
the "new root" is deleted or at least empty?

I mean having a directory structure with 3 subdiretories, each of them
has files in it

> >       else:
> >          for subdir in subdirs:
> >             subdir = os.path.join(cwd, subdir)
> >             print "We need to recurse into: %s" % (subdir, )
> >             del_tree(subdir)
>
> ?and here you are calling the your function recursively which then calls
> again `os.walk()` on that subdirectory.  That's a little bit too much.

I call it recursively here because I

* either need to backtrack to remember which directories are empty (and leafs)
* or I just recurse my function which yields an OSError because a
directory the original os.walk will visit doesn't exist anymore
because some recursion already deleted it.

(correct me if I'm wrong - but I'd like to stick with os.walk for this
as an exercise)

> Or `shutil.rmtree()`.  :-)

Nice function but not part of my exercise :) - No it isn't homework
just doing it to play around.

thanks
martin

PS: as I'm writing this i just discovered that I missed the
topdown=False argument for os.walk. Playing a bit with it the docs
seem to say that is more what I want than topdown=True

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours

From deets at nospam.web.de  Sat Oct 20 02:51:02 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 20 Oct 2007 08:51:02 +0200
Subject: SQLObject - Connect to established DB with non-int 'id' field
In-Reply-To: <1192839228.836892.139780@e9g2000prf.googlegroups.com>
References: <1192839228.836892.139780@e9g2000prf.googlegroups.com>
Message-ID: <5ntmr1Fk3p0jU1@mid.uni-berlin.de>

Sean DiZazzo schrieb:
> Hi all,
> 
> I am just beginning with TurboGears and have run into a problem with
> SQLObject.
> 
> I'm trying to connect to an established mysql DB, and use TurboGears
> to display results from the DB only.  The problem is that the DB
> already has an 'id' field that is a string as opposed to an int.
> SQLObject complains because it wants to use the id field for it's own
> purposes.
> 
> How can I use TurboGears to get data out of this DB?

http://sqlobject.org/FAQ.html#non-integer-ids

While I personally prefer SQLObject over SQLAlchemy, the latter has 
better legacy-database-support. Maybe a switch would be the better solution.

Diez


From phil at freehackers.org  Mon Oct 29 06:56:41 2007
From: phil at freehackers.org (BlueBird)
Date: Mon, 29 Oct 2007 03:56:41 -0700
Subject: building a linux executable
In-Reply-To: <1193260111.816092.258690@y27g2000pre.googlegroups.com>
References: <1193223316.020001.77940@i13g2000prf.googlegroups.com>
	<5o8rl3Flhd8uU1@mid.individual.net>
	<1193228750.497591.202330@y27g2000pre.googlegroups.com>
	<1193260111.816092.258690@y27g2000pre.googlegroups.com>
Message-ID: <1193655401.427602.277750@50g2000hsm.googlegroups.com>


Hi,

Some time ago, I compiled a small list of tools to perform the some
"python executable bundling" tasks.

It might be useful for you. Here is the list:

http://www.freehackers.org/Packaging_a_python_program


   Philippe



From nick.bastin at gmail.com  Mon Oct  8 21:27:09 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Mon, 8 Oct 2007 21:27:09 -0400
Subject: pytz has so many timezones!
In-Reply-To: <1191891827.863258.23620@y42g2000hsy.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
	<1191891827.863258.23620@y42g2000hsy.googlegroups.com>
Message-ID: <66d0a6e10710081827m47655a65p2a9b77165777180d@mail.gmail.com>

On 10/8/07, mensanator at aol.com <mensanator at aol.com> wrote:
> > What do you mean by "the military" and why do you think they're
> > authoritative on the topic of timezones?
>
> Because they publish maps?

I'm not sure what this has to do with it.

> > but as far as I know they don't define timezones.
>
> Ok, maybe they don't define them. But they get them from somewhere
> and the zones are labeled A-Z (don't ask which letter isn't used).
> Zone Z is equivalent to GMT and the time is refered to as Zulu time.

They get them from NATO.  NGO's outside of NATO do not use NATO time
zones for describing time data, mostly because NATO doesn't care about
daylight savings time.  Works fine for the military, but not so well
for your civilian users.

> That's 25 zones, not 400. Under that system there are no half-hour
> offset zones, no zones based on sunset and no lunatic GMT+13 zones.

Yes, but lucky for us, we live in the real world, so we have to deal
with 400 time zones.  The reality is that people LIVE in those
'lunatic' time zones, and software needs to address that.

If I schedule a meeting with someone in Indiana, and I'm in Ohio,
they're in the same military time zone, but they don't observe
daylight savings time, so in fact our times are different.  Users
probably want our applications to handle these problems.

> > Since timezones (obviously)
> > contain more information than just the GMT offset
>
> Of course. But the GMT offset could be used to filter his list
> of 400 choices, couldn't it?

Sortof.  First, your user has to understand what GMT is, so that's
already going to cause problems.   Secondly, you need to handle time
zones which drift from different GMT offsets depending on the time of
year.  At the very least your algorithm needs to be greedy.

> Agreed. But if someone gave me a list of 400 choices, I would look
> for some way to reduce the list to a manageable choice. Isn't that
> what the OP wants?
>
> Why not teach him the truth, starting from the top level? Shouldn't
> you teach him to fish rather than just give him one?

Because the truth is that there are upwards of 400 different time
zones, accounting for local custom and law.  The military can
conveniently ignore that, but we as application writers cannot.

There is no central authority which defines global time zones.  The
functional definition of a time zone is merely a geographical area of
the earth that has adopted the same local time rules.

--
Nick


From erik at myemma.com  Thu Oct 25 14:06:41 2007
From: erik at myemma.com (Erik Jones)
Date: Thu, 25 Oct 2007 13:06:41 -0500
Subject: Parallel insert to postgresql with thread
In-Reply-To: <20071025151214.8162.1787401471.divmod.quotient.27649@ohm>
References: <20071025151214.8162.1787401471.divmod.quotient.27649@ohm>
Message-ID: <C1F551D7-C0A1-4FE4-B08E-A612469994AA@myemma.com>

On Oct 25, 2007, at 10:12 AM, Jean-Paul Calderone wrote:

> On Thu, 25 Oct 2007 09:46:54 -0500, Erik Jones <erik at myemma.com>  
> wrote:
>>
>> [snip]
>>
>> Fortunately, in his case, that's not necessarily true.  If they do
>> all their work with the same connection then, yes, but there are
>> other problems with that as mention wrt thread safety and psycopg2.
>> If he goes the recommended route with a separate connection for each
>> thread, then Postgres will not serialize multiple inserts coming from
>> separate connections unless there is something like and ALTER TABLE
>> or REINDEX concurrently happening on the table.  The whole serialized
>> inserts thing is strictly something popularized by MySQL and is by no
>> means necessary or standard (as with a lot of MySQL).
>
> PostgreSQL won't serialize inserts to the same table with a sequence
> column?  Wow. :)

No, because sequences are separate relations that are transaction- 
safe, which is Postgres multi-process/session version of thread  
safe.  To be more specific, there's really no such thing as a  
"sequence column" in Postgres.  I wan't go into more detail here  
since this is a Python list, but if you want more info check out the  
Postges site and manual, the mailing lists, or respond directly to me  
if you just want to know how this particular bit works better.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From no at spam.com  Tue Oct 30 20:47:07 2007
From: no at spam.com (Farshid Lashkari)
Date: Tue, 30 Oct 2007 17:47:07 -0700
Subject: simple? embedding question
In-Reply-To: <1193789085.081049.152410@22g2000hsm.googlegroups.com>
References: <1193769063.364226.208300@o38g2000hse.googlegroups.com>
	<4727854D.3050201@spam.com>
	<1193789085.081049.152410@22g2000hsm.googlegroups.com>
Message-ID: <bgQVi.1175$RA6.827@newsfe03.phx>

sndive at gmail.com wrote:
> i switched to PyImport_ImportModuleEx per your suggestion but i still
> get
> 
> Traceback (most recent call last):
>   File "<string>", line 1, in ?
> NameError: name '__main__' is not defined
> 
> i tried PyRun_SimpleString("__main__.foo.baz()"); :
> Traceback (most recent call last):
>   File "<string>", line 1, in ?
> NameError: name '__main__' is not defined
> 
> i do not have if __name__ == '__main__':
> statement anywhere in the module i'm importing,
> but nevertheless i checked that PyImport_AddModule("__main__");
> and subsequent getdict return non null pointers.
> does non null dictionary indicate that PyImport_AddModule
> succeeded as opposed to creating an empty module object?

Sorry, I misunderstood the behavior of the PyImport_ImportModuleEx() 
function. You can use the PyImport_AddModule() function as before, but 
you must explicitly add the module to the __main__ module. Here is some 
code:

PyObject *mainmod = PyImport_AddModule("__main__");
PyObject *foo = PyImport_ImportModule("foo");
Py_INCREF(foo); //Increment foo module since PyModule_AddObject() steals 
reference
PyModule_AddObject(mainmod, "foo", foo);
PyRun_SimpleString("foo.baz()");

-Farshid


From yuxi at ece.gatech.edu  Tue Oct 30 22:52:21 2007
From: yuxi at ece.gatech.edu (Yu-Xi Lim)
Date: Tue, 30 Oct 2007 22:52:21 -0400
Subject: Arp request to get MAc Adress  with IP address
In-Reply-To: <1193777850.795407.233750@i38g2000prf.googlegroups.com>
References: <1193777850.795407.233750@i38g2000prf.googlegroups.com>
Message-ID: <fg8ql4$cda$1@news-int2.gatech.edu>

amjadcsu at gmail.com wrote:
> Hello,
> I have a network on same subnet. I have an ip address of a machine.
> but i need to get its MAC Adress.
> Sendingf ARP request is the way i am taking.
> 
> IS there any other way to get this MAC Adress in python.??
> 
> Also does python go down to level 2 of TCP/IP model??
> 
> 
> Sorry if i am to naive. Just learning python
> 
> thanks
> 

Python's standard libs don't do that, but you can probably work out 
something with sockets.

However, I do recommend you take a look at Scapy, which is just great 
for network protocol manipulation. http://www.secdev.org/projects/scapy/

I hadn't used it in a while, but when I last tried it, it was very 
promising.


From vinay_sajip at yahoo.co.uk  Tue Oct 23 04:08:11 2007
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Tue, 23 Oct 2007 01:08:11 -0700
Subject: Write by logging.FileHandler to one file by many processess
In-Reply-To: <mailman.152.1192676917.13605.python-list@python.org>
References: <ff5397$j9g$1@nemesis.news.tpi.pl>
	<1192628746.196204.207620@t8g2000prg.googlegroups.com>
	<5nmjffFiouurU4@mid.uni-berlin.de>
	<mailman.152.1192676917.13605.python-list@python.org>
Message-ID: <1193126891.210538.54830@k35g2000prh.googlegroups.com>

On Oct 18, 4:08 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> Yes, output from several processes comes horribly mixed...
> I've avoided it using separate log files for each process; but if that's
> not possible, one could try using syslog or a SocketHandler and a separate
> listening process.

The Python logging docs even contain a working example of such a
listening process (receiver):

http://www.python.org/doc/current/lib/network-logging.html

Regards,

Vinay Sajip



From diprat7 at gmail.com  Thu Oct 11 14:15:58 2007
From: diprat7 at gmail.com (diprat7 at gmail.com)
Date: Thu, 11 Oct 2007 11:15:58 -0700
Subject: wana watch latest hindi hot videos?
Message-ID: <1192126558.184777.228290@22g2000hsm.googlegroups.com>

wana watch latest hindi hot videos?
than www.yedil.com is the site you are looking for
have a nice time with www.yedil.com .Log on now



From antroy at gmail.com  Mon Oct 22 05:51:58 2007
From: antroy at gmail.com (Ant)
Date: Mon, 22 Oct 2007 02:51:58 -0700
Subject: python with braces pre-processor
In-Reply-To: <ffhrdr$ikp$1@news.ciril.fr>
References: <ffhrdr$ikp$1@news.ciril.fr>
Message-ID: <1193046718.083827.246210@z24g2000prh.googlegroups.com>

On Oct 22, 10:44 am, Paul Brauner <paul.brau... at loria.fr> wrote:
> Hi, I'm working on a project that outputs several languages including
> (hopefully) python. My problem is that the generic backend architecture
> has not been designed to output correctly indented code, and that would
> be helpful if there were somewhere a python pre-processor that would take
> python with braces as an input and output regular python code. I thought
> that it must exists because everyone generating python code will
> encounter more or less the same problem, but I didn't find any 'official'

There's a tool in the standard Python distribution that processes code
with commented end statements. eg:

def my_funct():
pass
# end


or similar, and indents it correctly. This may be a possibility for
your purposes.





From garlictrompet at gmail.com  Tue Oct 30 05:20:10 2007
From: garlictrompet at gmail.com (Ajay Deshpande)
Date: Tue, 30 Oct 2007 14:50:10 +0530
Subject: Retrieving all open applications ...
Message-ID: <3b10c2060710300220g16373e41i6d4290563c15776@mail.gmail.com>

Hi everyone:

I need to retrieve all currently open applications using a python program.
So my output should be a list of window handles. Is there a module which I
can use?

Thanks for any help.

-Ajay
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071030/796ff31f/attachment.html>

From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Oct 19 11:29:25 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 19 Oct 2007 17:29:25 +0200
Subject: vote for Python - PLEASE
References: <mailman.193.1192751640.13605.python-list@python.org>
Message-ID: <5ns0qlFjut8fU2@mid.individual.net>

Monty Taylor wrote:

> MySQL has put up a poll on http://dev.mysql.com asking what your
> primary programming language is. Even if you don't use MySQL -
> please go stick in a vote for Python. I'm constantly telling folks
> that Python needs more love, but PHP and Java are kicking our
> butts...

If the MySQL developers base their support decision on a
non-representative web vote, I'll really use a different project if
I needed one ...

Regards,


Bj?rn

-- 
BOFH excuse #297:

Too many interrupts



From erik at myemma.com  Thu Oct 11 13:03:09 2007
From: erik at myemma.com (Erik Jones)
Date: Thu, 11 Oct 2007 12:03:09 -0500
Subject: Keeping track of subclasses and instances?
In-Reply-To: <1192081763.798940.227830@r29g2000hsg.googlegroups.com>
References: <fejpo9$vm$1@news1.carnet.hr>
	<t6idnS3M5Znm6pDanZ2dnUVZWhednZ2d@comcast.com>
	<fejtcg$9k1$1@news1.carnet.hr>
	<1192081763.798940.227830@r29g2000hsg.googlegroups.com>
Message-ID: <E77E6010-FC90-4074-AB72-EECA4E6ABC61@myemma.com>


On Oct 11, 2007, at 12:49 AM, Andreas Kraemer wrote:

> On Oct 10, 6:19 pm, Karlo Lozovina <_kar... at mosor.net> wrote:
>> Larry Bates wrote:
>>> I'm not completely sure I understand the question but here goes.
>>> Instances of
>>> classes are classes can be stored in lists or dictionaries.  In  
>>> lists you
>>> reference them via their index (or iterate over them) and in  
>>> dictionaries
>>> you can give them a name that is used as a key.
>>
>> I wish if it were that simple :).
>>
>> Here is a longer description - I have a function that given input  
>> creates a
>> custom class and returns it back. The user is free to subclass  
>> that (even
>> more, he should do that), and of course he will make instances of  
>> those
>> subclasses. Now, my question is how to keep track of subclasses  
>> and their
>> instances, without the need for user interaction (appending them  
>> to a list,
>> or adding to dictionary)?
>>
>> Thanks,
>>
>> --
>> Karlo Lozovina - Mosorclass Meta(type):
>
> What about the following solution?
>
> class Meta(type):
>   def __new__(mcl,*args,**kw):
>     class_ = super(Meta,mcl).__new__(mcl,*args,**kw)
>     mcl._classes.append(class_)
>     class_._instances = []
>     return class_
>   _classes = []
>
> def factory():
>   class Class(object):
>     __metaclass__ = Meta
>     def __new__(cls,*args,**kw):
>       instance = super(Class,cls).__new__(cls,*args,**kw)
>       cls._instances.append(instance)
>       return instance
>   return Class
>
>>>> A = factory()
>>>> class B(A): pass
> ...
>>>> a = A()
>>>> b = B()
>>>> Meta._classes
> [<class 'meta.Class'>, <class '__main__.B'>]
>>>> A._instances
> [<meta.Class object at 0xb7dbb08c>]
>>>> B._instances
> [<__main__.B object at 0xb7dbb0ec>]
>
> So, you see that you can access all classes, their subclasses, and
> instances from Meta.
>
> Of course in a more elaborate version _classes and _instances should
> store weak references, so that classes and instances can actually be
> deleted. I also haven't explored under which circumstances this can
> break ...
>
> I can imagine different use cases for this, (though they certainly are
> non-standard :-)). I once contemplated the (toy-) implementation of a
> frame-based knowledge representation system using Python's object
> model, where one definitely needs classes to keep track of their
> instances ...

Another use case that I've run across is when defining model classes  
using an ORM against a database that uses table inheritance  
extensively with the result that the database has way more tables  
than you'd actually want to manually maintain model classes/files for.

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From bdesth.quelquechose at free.quelquepart.fr  Tue Oct 30 15:36:15 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 30 Oct 2007 20:36:15 +0100
Subject: choose from a list
In-Reply-To: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
References: <1193767382.430635.303370@d55g2000hsg.googlegroups.com>
Message-ID: <472787dc$0$31486$426a74cc@news.free.fr>

barronmo a ?crit :
> I'm new to programming and even newer to Python and would be grateful
> for some help on what has been a tough problem for me.  The project I
> am working on is an electronic medical record using MySQL/Python.  I'm
> currrently working on a module that looks up a patient's name based on
> input from the user.
> 
> My goal is a lookup based on the first 2 or 3 letters of the patient's
> last name.  The matching results would appear as numbered choices so
> that the user would choose only a number to then access various parts
> of the patient's record.  The results might look like this for user
> input "smi":
> 
> 1  387  John Smith
> 2  453  Jane Smith
> 3  975  Joe Smithton
> 
> Here is a copy of what I have so far, name_lookup.py:
> 
> 
> import MySQLdb
> 
> def name_find(namefrag):
> 
>      conn = MySQLdb.connect(host = "localhost",
>           user = "root",
>           passwd = "n85",
>           db = "meds")

Opening (and closing) a connection to the RDBMS on each and every 
function is certainly not the best way to go.

>      cursor = conn.cursor(MySQLdb.cursors.DictCursor)
>      cursor.execute("SELECT patient_ID, firstname, lastname FROM
> demographics WHERE lastname LIKE '"+ str(namefrag)+"%'")

Please re-read both the db-api and MySQLdb docs. You should not build 
the whole query this way, but instead use (db module specific) 
plaeholders and pass actual params as a tuple, ie (if I correctly 
remember MySQLdb specificities):

cursor.execute(
    "SELECT patient_ID, firstname, lastname FROM " \
  + " demographics WHERE lastname LIKE '%s%%'),
    (namefrag, )
    )


>      results = cursor.fetchall()
>      for row in results:

Some db modules let you iterate directly over the cursor. Check if it's 
the case with MySQLdb. If so, you may want:

        for row in cursor:

instead.

>           print "%s   %s %s  %s" % (row["patient_ID"],
> row["firstname"], row["lastname"])

Python has better to offer wrt/ string formatting (assuming patient_ID 
is an integer):

            print "%(patient_ID)03d %(firstname)s, %(lastname)s" % row

> 
> Thanks in advance for any help.

wrt/ (what I guess is) your (very implicit) question, you may want to 
have a look at enumerate(iterable):

for index, item in enumerate(cursor): #or:enumerate(cursor.fetchall()):
     print i, item

HTH


From kay.schluehr at gmx.net  Sun Oct  7 11:46:08 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Sun, 07 Oct 2007 08:46:08 -0700
Subject: Override 'and' and 'or'
In-Reply-To: <1191768523.821775.178080@50g2000hsm.googlegroups.com>
References: <1191765135.493040.176500@d55g2000hsg.googlegroups.com>
	<13ghqmkl33t3ra4@corp.supernews.com>
	<1191768523.821775.178080@50g2000hsm.googlegroups.com>
Message-ID: <1191771968.692976.318950@w3g2000hsg.googlegroups.com>

On Oct 7, 4:48 pm, Dekker <m.aschwan... at gmail.com> wrote:
> On 7 Okt., 16:19, Steven D'Aprano <st... at REMOVE-THIS-
>
> cybersource.com.au> wrote:
> > On Sun, 07 Oct 2007 13:52:15 +0000, Dekker wrote:
> > > Is it possible to override 'and' and/or 'or'?
>
> > Not without hacking the Python source code, in which case what you've got
> > is no longer Python.
>
> > Why do you want to do so?
>
> > --
> > Steven.
>
> Well I think it is not possible what I wanted to achieve. By
> overriding the "and" and "or" keyword I wanted to return a new object:
>
> SqlValueInt(4) and SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
> SqlValueInt(5))
>
> This is only possible for: +, -, /, *, >, >=, ...
>
> Well... I have to live with the (binary) __and__, __or__ option and
> the user has to write:
>
> SqlValueInt(4) & SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4),
> SqlValueInt(5))
>
> Thanks for your input, but __nonzero__ is not of any help in this
> case... I want to abuse the "magic" functions for some transformations
> and not some evaluation.
>
> Marco

You can see what "and" and "or" are actually doing:

import dis
dis.dis(lambda: x or y and z)

  1           0 LOAD_GLOBAL              0 (x)
              3 JUMP_IF_TRUE            11 (to 17)
              6 POP_TOP
              7 LOAD_GLOBAL              1 (y)
             10 JUMP_IF_FALSE            4 (to 17)
             13 POP_TOP
             14 LOAD_GLOBAL              2 (z)
        >>   17 RETURN_VALUE

Here you can see nicely that they are not implemented as specialized
opcodes but being compiled to jumps. This causes their lazy nature. If
"and" would be implemented as a normal ( eager ) operator a statement
like:

if l and l[0] == 2:
    BLOCK

would raise an IndexError if l is empty.





From __peter__ at web.de  Sat Oct 20 11:00:46 2007
From: __peter__ at web.de (Peter Otten)
Date: Sat, 20 Oct 2007 17:00:46 +0200
Subject: weakref pitfall
References: <1192888078.740427.222640@t8g2000prg.googlegroups.com>
Message-ID: <ffd56t$e6k$02$1@news.t-online.com>

Odalrick wrote:

> I'm trying to write a simple game and decided I need an eventmanager.
> 
> <code>
> import weakref
> from collections import defaultdict
> 
> class _EventManager( object ):
>     def __init__( self ):
>         self._handled_events =
> defaultdict( weakref.WeakKeyDictionary )
> 
>     def register( self, handler, event_type, filter=None ):
>         self._handled_events[event_type][handler] = filter
> 
>     def deregister( self, handler, event_type ):
>         self._handled_events[event_type].pop( handler, None  )
> 
>     def handle_event( self, event ):
>         event_type = event.type
>         for handler, filter in
> self._handled_events[event_type].items():
>             if filter == None or filter(event):
>                 handler( event )
> 
> eventmanager = _EventManager()
> 
> __all__ = [ eventmanager ]
> </code>
> 
> Fairly simple, yet there was some strange bug that prevented my game
> from exiting.
> 
> I think what happened was that when __init__ ends, self goes out of
> scope, and by extension so does self.handle_quit, Now there are no
> more refeences to self.handle_quit, because weakrefs don't count, and
> the event gets automatically dropped from my eventmanager. I thought
> that wouldn't happen because handle_quit is part of the class and
> instance MainGame.

No, self is yet another reference to the _EventManager instance which
survives the __init__() call because it is also referenced by the
global variable eventmanager.
On the other hand, self.handle_quit creates a new bound-method object every
time which doesn't even live as long as __init__().
 
> Am I right in my guess? If so, how should I adress this bug? If not,
> what is the bug?

The easiest option, to forget about weakrefs, seems to be the best
here. The other option is to keep a reference to the bound method, e. g.:

class MainGame(object):
    def __init__(self, ...):
        # put a bound method into the MainGame instance
        # you can use a different attribute name if you want
        hq = self.handle_quit = self.handle_quit
        # register it
        eventmanager.register(hq, ...)

Peter


From rcdailey at gmail.com  Fri Oct  5 18:10:50 2007
From: rcdailey at gmail.com (Robert Dailey)
Date: Fri, 5 Oct 2007 17:10:50 -0500
Subject: csv module and Unicode
Message-ID: <496954360710051510u4150742cyf1268444c3760862@mail.gmail.com>

Hi,

According to the Python 2.5 documentation, Unicode is not supported through
the CSV module. Is there some third-party CSV module I can use that has
Unicode support? Thanks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071005/400364d1/attachment.html>

From dlenski at gmail.com  Mon Oct 22 12:59:03 2007
From: dlenski at gmail.com (Daniel Lenski)
Date: Mon, 22 Oct 2007 16:59:03 GMT
Subject: Can you escape a % in string that will used for substitution
References: <mailman.186.1192737079.13605.python-list@python.org>
Message-ID: <rF4Ti.36380$eY.34077@newssvr13.news.prodigy.net>

On Thu, 18 Oct 2007 15:21:41 -0400, Gerard Brunick wrote:
> Is there a way to do:
> 
> s = "I like python %i%s of the time." print s % (99, "%")
> 
> without having to pass in "%"?
> 
> Thanks,
> Gerard

Just double-up the % sign, e.g. "I like python %i%% of the time."



From python.list at tim.thechases.com  Thu Oct 11 08:18:57 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 11 Oct 2007 07:18:57 -0500
Subject: Is hostmonster any good for hosting python?
In-Reply-To: <1192103847.465144.44670@r29g2000hsg.googlegroups.com>
References: <1192037226.271956.262390@o80g2000hse.googlegroups.com>
	<1192103847.465144.44670@r29g2000hsg.googlegroups.com>
Message-ID: <470E14B1.60403@tim.thechases.com>

>> According to hostmonster's list of features, they do support python.
>> Does anybody have any experience with hostmonster?
> 
> I'm using host monster to run my html-only site. However, I want to
> add some python cgi, and I'd prefer to extend that to the Django
> framework. I've had some issues getting cgi support. I've IM'd with a
> tech rep and all they could tell me is that "yes, they do support
> python cgi." From what I've seen, they don't have the mod_python
> module installed for Apache. Without mod_python, I don't think you can
> install Django. Not sure about other pythonic web frameworks.

While vanilla CGI is a really bad idea for Django, in addition to
mod_python, Django supports FastCGI for deployment if your
hosting service doesn't give you mod_python access.

-tkc





From carsten at uniqsys.com  Fri Oct  5 10:50:32 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 05 Oct 2007 10:50:32 -0400
Subject: remove list elements..
In-Reply-To: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
References: <1191594459.951323.254080@r29g2000hsg.googlegroups.com>
Message-ID: <1191595832.3377.12.camel@dot.uniqsys.com>

On Fri, 2007-10-05 at 07:27 -0700, Abandoned wrote:
> Hi..
> I have a problem..
> list1=[11, 223, 334, 4223...] 1 million element
> list2=[22,223,4223,2355...] 500.000 element
> 
> I want to difference list1 to list2 but order very importent..
> 
> My result must be:
> list3=[11,334,...]
> 
> I do this use FOR easly but the speed very imported for me. I want to
> the fastest method please help me.

If you can write this as a for/append loop, then you can easily rewrite
it into a list comprehension:

<blank1> = []
for <blank2> in <blank3>:
  if <blank4>:
     <blank1>.append(<blank2>)

becomes

<blank1> = [<blank2> for <blank2> in <blank3> if <blank4>]

Now all you need to do is fill in the blanks.

As a hint for what exactly to fill in for blank4, remember (or be
advised) that Python has sets.

HTH,

-- 
Carsten Haese
http://informixdb.sourceforge.net




From michele.simionato at gmail.com  Wed Oct 10 10:52:41 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Wed, 10 Oct 2007 14:52:41 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191988646.640498.278860@19g2000hsx.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<1191988646.640498.278860@19g2000hsx.googlegroups.com>
Message-ID: <1192027961.331000.111170@g4g2000hsf.googlegroups.com>

On Oct 10, 5:57 am, mdipie... at cs.depaul.edu wrote:
> Since you are starting a new project you may want to look into
> something new and different
>
> http://mdp.cti.depaul.edu/examples

Requiring Python 2.5 may not be a good idea for the time being. For
instance, I am
forced to use Python 2.4 because of some C libraries I need, so I
cannot even consider
a framework based on Python 2.5 for the moment :-(

     Michele Simionato



From dadapapa at googlemail.com  Wed Oct 24 09:14:28 2007
From: dadapapa at googlemail.com (Harold Fellermann)
Date: Wed, 24 Oct 2007 13:14:28 -0000
Subject: Better writing in python
In-Reply-To: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <1193231668.762334.296900@e9g2000prf.googlegroups.com>

Hi Alexandre,

On Oct 24, 2:09 pm, Alexandre Badez <alexandre.ba... at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this code

Please tell us, what it is you want to achieve. And give us some
context
for this function.

> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)

This snippet will seperate d.Arguments into two lists: one that
holds all elements that are references to True(!) and another list
that holds the rest. The condition 'if args is True' will only
be hold if arg actually _is_ the object _True_. This is probably
not what you want. Apart from that, you might go with

lMandatory = [ arg for arg in cls.dArguments if condition() ]
lOptional = [ arg for arg in cls.dArguments if not condition() ]

the second line could be rewritten

lOptional = list(set(cls.dArguments)-set(lMandatory))

If lMandatory and lOptional do not need to be lists, you can also
write

lMandatory = set(arg for arg in cls.dArguments if condition())
lOptional =  set(cls.dArguments) - lMandatory

But please, give us some more context of what you want to do.

- harold -



From cjw at sympatico.ca  Wed Oct 17 22:51:55 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Wed, 17 Oct 2007 22:51:55 -0400
Subject: [Fwd: Re: why doesn't have this list a "reply-to" ?]
Message-ID: <4716CA4B.7020805@sympatico.ca>



-------- Original Message --------
Subject: Re: why doesn't have this list 
a "reply-to" ?
Date: Wed, 17 Oct 2007 11:13:49 +0900
From: Byung-Hee HWANG <bh at izb.knu.ac.kr>
Reply-To: bh at izb.knu.ac.kr
Organisation: InZealBomb
To: python-list at python.org
Newsgroups: gmane.comp.python.general
References: <471530E3.9090602 at gmail.com>

On Tue, 2007-10-16 at 23:45 +0200, stef 
mientki wrote:
> hello,
> 
> I'm always have great difficulties, replying to this beautiful and 
> helpful list.
> 
> When I hit the reply button,
> the message is sent personally to the sender and not to the list.
> I've subscribed to dozen's of lists,
> and all have an "reply-to" address, that points to list and not to the 
> individual.

Just click "Ctrl-L", then you can reply 
to lists directly if you use
good mailer like mutt or thunderbird or 
evolution ;;


^L doesn't work for me with Thunderbird 
2.0.0.6

With some lists, Reply goes to the 
sender.  ReplyAll goes to the sender, 
the list and anyone with a cc:

With Python on news.gmane.org, Reply 
goes to the list and ReplyAll is as above.

Colin W.
-- 
Byung-Hee HWANG <bh at izb.knu.ac.kr>

"I need a guy I can trust."
"Yeah, OK, let me think about it."
		-- Johnny Fontane and Nino Valenti, 
"Chapter 12", page 177
-- 
http://mail.python.org/mailman/listinfo/python-list



From michael at jedimindworks.com  Wed Oct  3 16:22:15 2007
From: michael at jedimindworks.com (Michael Bentley)
Date: Wed, 3 Oct 2007 13:22:15 -0700
Subject: List of objects X Database
In-Reply-To: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
References: <1191441678.264856.224900@19g2000hsx.googlegroups.com>
Message-ID: <78DF4FC4-3917-406D-8E54-527B1732B5B5@jedimindworks.com>


On Oct 3, 2007, at 1:01 PM, MindMaster32 wrote:

> I am writing a script that has to read data from an ASCII file of
> about 50 Mb and do a lot of searches and calculations with that data.
> That would be a classic problem solved by the use of a database
> (SQLite would suit just fine), but that would require the user to
> install more packages other than python itself, and that I am trying
> to avoid.
> Since the data is not too large, I wonder if there is another way to
> store all data in memory and work with it more or less like a
> database, doing searches and working with datafields.
>
> This is not clear to me how can be implemented. I thought of creating
> a class with the data structure, and creating a list of objects of
> that class, each one containing one line of data from the "database".
>
> Any thoughts or suggestions?

Berkeley DB? 


From aleax at mac.com  Sun Oct 21 19:09:25 2007
From: aleax at mac.com (Alex Martelli)
Date: Sun, 21 Oct 2007 16:09:25 -0700
Subject: C++ version of the C Python API?
References: <mailman.230.1192833455.13605.python-list@python.org>
	<471B8711.1020509@v.loewis.de>
	<496954360710211250x1389a594m1551b3389cc9d5dd@mail.gmail.com>
	<471BB1FA.1020704@v.loewis.de>
	<496954360710211349p4278f4f3g675c657f7740980f@mail.gmail.com>
	<mailman.296.1193000282.13605.python-list@python.org>
Message-ID: <1i6ccqr.1hxwo1wz9aa3uN%aleax@mac.com>

"Martin v. L?wis" <martin at v.loewis.de> wrote:
   ...
> The most popular ones are Boost.Python, CXX, and PySTL.

I think SIP is also pretty popular (see
<http://www.riverbankcomputing.co.uk/sip/>).


Alex


From roy at panix.com  Fri Oct  5 11:48:18 2007
From: roy at panix.com (Roy Smith)
Date: Fri, 05 Oct 2007 11:48:18 -0400
Subject: unit testing
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1571.1191577093.2658.python-list@python.org>
	<1191593565.971012.212920@22g2000hsm.googlegroups.com>
Message-ID: <roy-D18936.11481805102007@news.panix.com>

byte8bits at gmail.com wrote:
> Thanks to all for the opinions. Just to clarify, I have nothing
> against testing. I like doing it. I catch a lot of bugs! I dislike the
> formality of the unittest module. It's unyielding. It makes testing
> difficult unless your code is written with testing in mind from the
> start.

There is some advantage in forcing you to write code with testing in mind.  
It often works out that the same things which make code easy to test (clean 
interfaces, little cross-class dependency, etc), also make the code easy to 
maintain and modify later.

Compared to some other testing frameworks I've used, unittest is pretty 
lightweight.  That's not to say that for small projects, even the small 
amount of baggage it brings with it may feel heavy.


From paul.hankin at gmail.com  Thu Oct 18 04:00:56 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: 18 Oct 2007 01:00:56 -0700
Subject: Stopping a fucntion from printing its output on screen
In-Reply-To: <1192633024.035476.262830@i38g2000prf.googlegroups.com>
References: <1192633024.035476.262830@i38g2000prf.googlegroups.com>
Message-ID: <1192661317.701054.74040@q3g2000prf.googlegroups.com>

On Oct 17, 3:57 pm, sophie_newbie <paulgeele... at gmail.com> wrote:
> Hi, in my program i need to call a couple of functions that do some
> stuff but they always print their output on screen. But I don't want
> them to print anything on the screen. Is there any way I can disable
> it from doing this, like redirect the output to somewhere else? But
> later on in the program i then need to print other stuff so i'd need
> to re-enable printing too. Any ideas?

Yes, in your functions that you may or may not want to print stuff,
declare them with a stream parameter that defaults to stdout.

For example:

import sys

def f(i, out = sys.stdout)
   # Do something...
   print >>out, "i is %d" % i

Then usually, you call
f(10)

But when you want to elide the output, use Jeremy's nullwriter:
class NullWriter(object):
    def write(self, arg):
        pass
nullwriter = NullWriter()

f(10, out = nullwriter)

Having the output stream explicit like this is much better style than
abusing sys.stdout, and it won't go wrong when errors occur. It's the
same idea as avoiding global variables.

--
Paul Hankin



From kyosohma at gmail.com  Tue Oct 16 10:09:20 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 16 Oct 2007 14:09:20 -0000
Subject: while statements
In-Reply-To: <mailman.62.1192541292.13605.python-list@python.org>
References: <mailman.62.1192541292.13605.python-list@python.org>
Message-ID: <1192543760.246738.112930@e9g2000prf.googlegroups.com>

On Oct 16, 8:28 am, Shawn Minisall <trekker... at comcast.net> wrote:
> I just learned about while statements and get why you place them around
> inputs for validation, but I'm a little lost on exactly where to place
> it with what condition in this program where the number of fat grams
> exceeds the total number of calories so that it loops back and asks you
> the two questions again instead of just saying The calories or fat grams
> were incorrectly entered.  Any idea's?
>
> thx
>
> while cal <=0:
>     #Prompt for calories
>         cal = input("Please enter the number of calories in your food: ")
>         if cal <=0:
>             print "Error.  The number of calories must be positive."
>
>     #Prompt for fat
>         fat = input("Please enter the number of fat grams in your food: ")
>         if fat <=0:
>             print "Error.  The number of fat grams must be positive."
>
>     #Calculate calories from fat
>         calfat = float(fat) * 9
>
>     #Calculate number of calories from fat
>         caldel = calfat / cal
>
>     #change calcent decimal to percentage
>         calcent = caldel * 100
>
>     #evaluate input
>     if calfat > cal:
>         print "The calories or fat grams were incorrectly entered."
>
>     elif calcent > 0 and calfat < cal:
>
>         if caldel <= .3:
>             print "Your food is low in fat."
>         elif caldel >= .3:
>             print "Your food is high in fat."
>
>     #Display percentage of calories from fat
>         print "The percentage of calories from fat in your food is %",
> calcent

I would think using 2 while loops would be easiest.

<code>
# untested

cal=0
calfat = 1
while calfat > cal:
    while cal<=0:
        #Prompt for calories
            cal = int(raw_input("Please enter the number of calories
in your food: "))
            if cal <=0:
                 print "Error.  The number of calories must be
positive."
    fat=0
    while fat <=0:
        #Prompt for fat
        fat = int(raw_input("Please enter the number of fat grams in
your food: "))
        if fat <=0:
            print "Error.  The number of fat grams must be positive."
</code>

I'll leave the rest up to you.

Mike



From gagsl-py2 at yahoo.com.ar  Mon Oct 29 21:06:42 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 22:06:42 -0300
Subject: How python writes text into another windows application
References: <4726566B.1030408@gmail.com>
Message-ID: <op.t0zj1gdnx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 29 Oct 2007 18:53:47 -0300, Meitham <meithamj at gmail.com> escribi?:

> I am trying to write a simple program that reads data from a source file
> (Excel sheet, XML file or text file) and then write the data into
> another application by pasting the data into the applications fields,
> and jumps from one field to another by writing \t tab.
>
> My question is, how do I write the data into another application fields.
> My target application is the TNT consignment manager. I asked TNT for
> their API to make my life easier but they refused to release it :(. I
> have a software that uses the same way I am looking after to fill in
> application fields, it is the QuickAddress. Any idea how to achieve that?

I've had very good results using pywinauto:  
http://www.openqa.org/pywinauto/

-- 
Gabriel Genellina



From skpatel20 at gmail.com  Mon Oct  8 09:47:28 2007
From: skpatel20 at gmail.com (Sanjay)
Date: Mon, 08 Oct 2007 06:47:28 -0700
Subject: pytz has so many timezones!
In-Reply-To: <1191840365.421959.33250@g4g2000hsf.googlegroups.com>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<5mu8nqFf6tvaU1@mid.uni-berlin.de>
	<1191840365.421959.33250@g4g2000hsf.googlegroups.com>
Message-ID: <1191851248.337909.61900@o80g2000hse.googlegroups.com>

> Windows timezone selector only lists about 80 timezones. But why force
> the user to select timezone? Let them select from a list of countries
> and then infer the timezone from that data. With multiple alternatives
> for countries with more than one timezone, United States EST, United
> States PST and so on.

> I think the problem is displaying a dropdown list of timezones. People
> have little idea of how their timezones are called; it would be better
> to list countries, which are many but nicely alphabetized, and map the
> country to its only timezone, or for the few large countries with more
> than a TZ offer a choice later.

Thanks for the suggestions!

1. I am unable to understand how Windows manages with only 80 whereas
pytz has 400. Understanding this can be a nice clue for my work. Any
insights?
2. Mapping the timezones to countries is a nice idea. Any idea how to
go about it - I mean whether I have to collect the data manually and
do it, or some better way is available - will help me a lot.

thanks
Sanjay



From yuxi at ece.gatech.edu  Wed Oct 31 16:47:42 2007
From: yuxi at ece.gatech.edu (Yu-Xi Lim)
Date: Wed, 31 Oct 2007 16:47:42 -0400
Subject: Method needed for skipping lines
In-Reply-To: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
References: <CcOdnT-FlsevKLXanZ2dnUVZ_oimnZ2d@giganews.com>
Message-ID: <fgapld$4u9$1@news-int2.gatech.edu>

Gustaf wrote:
> Hi all,
> 
> Just for fun, I'm working on a script to count the number of lines in 
> source files. Some lines are auto-generated (by the IDE) and shouldn't 
> be counted. The auto-generated part of files start with "Begin VB.Form" 
> and end with "End" (first thing on the line). The "End" keyword may 
> appear inside the auto-generated part, but not at the beginning of the 
> line.
> 
> I imagine having a flag variable to tell whether you're inside the 
> auto-generated part, but I wasn't able to figure out exactly how. Here's 
> the function, without the ability to skip auto-generated code:
> 
> # Count the lines of source code in the file
> def count_lines(f):
>  file = open(f, 'r')
>  rows = 0
>  for line in file:
>    rows = rows + 1
>  return rows
> 
> How would you modify this to exclude lines between "Begin VB.Form" and 
> "End" as described above?
> Gustaf

David Mertz's Text Processing in Python might give you some more 
efficient (and interesting) ways of approaching the problem.

http://gnosis.cx/TPiP/


From p at ulmcnett.com  Wed Oct 31 17:41:25 2007
From: p at ulmcnett.com (Paul McNett)
Date: Wed, 31 Oct 2007 14:41:25 -0700
Subject: 3 number and dot..
In-Reply-To: <1193862276.144648.43850@22g2000hsm.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>	<mailman.708.1193861946.13605.python-list@python.org>
	<1193862276.144648.43850@22g2000hsm.googlegroups.com>
Message-ID: <4728F685.4000907@ulmcnett.com>

Abandoned wrote:

> On Oct 31, 10:18 pm, Paul McNett <p... at ulmcnett.com> wrote:
>> Abandoned wrote:
>> > Hi..
>> > I want to do this:
>> > for examle:
>> > 12332321 ==> 12.332.321
>>
>> > How can i do?
>>
>> Assuming that the dots are always in the 3rd and 7th position in the string:
>>
>> def conv(s, sep="."):
>>    l = [s[0:3], s[3:6], s[6:]]
>>    return sep.join(l)
>>
>> print conv("12332321")


> But it's starts from the end..
> print conv("12332321")
> 123.323.21
> This is wrong it would be 12.332.321

Ok, my slicing was off by one. Mea culpa. I leave it as an exercise to 
fix it. It is really easy, if you understand basic slicing in Python. If 
you don't understand slicing, you should google 'python slicing tutorial'.

But, from the other messages in the thread it has become apparent that 
you are wanting to group by thousands (that wasn't at all clear in your 
initial message).

Chris Mellon has given you the best response: use the locale module for 
this. Other people have done all the work for you, all you need to do is 
learn how to use locale to get what you want.

It seems like you are looking for a spoonfed solution rather than 
looking for guidance on how to solve the problem for yourself. If I'm 
wrong about that assessment, I apologize in advance.

Best regards and good luck with your project!
Paul

-- 
pkm ~ http://paulmcnett.com


From lasses_weil at klapptsowieso.net  Wed Oct 24 18:52:52 2007
From: lasses_weil at klapptsowieso.net (Wildemar Wildenburger)
Date: Thu, 25 Oct 2007 00:52:52 +0200
Subject: TeX pestilence (was Distributed RVS, Darcs, tech love)
In-Reply-To: <CRPTi.2859$f63.79@trndny03>
References: <1192914246.208743.94870@y27g2000pre.googlegroups.com>
	<471afd4c.179297746@news.readfreenews.net>
	<1192972158.250126.203980@v23g2000prn.googlegroups.com>
	<471b6714$0$90276$14726298@news.sunsite.dk>
	<1192981349.181197.308610@q5g2000prf.googlegroups.com>
	<tpednUBH8fM-6IbanZ2dnUVZ_hOdnZ2d@comcast.com>
	<ffg2jk$mj$1@online.de>
	<1193037849.011136.282480@y27g2000pre.googlegroups.com>
	<1193057430.359962.68820@v29g2000prd.googlegroups.com>
	<1pfph3dqfvhka2b6t5isv39po183ppp5ha@4ax.com>
	<ffj1f3$fpp$2@online.de>
	<471fc967$0$13110$9b4e6d93@newsspool2.arcor-online.net>
	<CRPTi.2859$f63.79@trndny03>
Message-ID: <471fccc5$0$27138$9b4e6d93@newsspool1.arcor-online.net>

J?rgen Exner wrote:
> Wildemar Wildenburger wrote:
>> Joachim Durchholz wrote:
>>> And yes, it [syntactically] sucks in major ways.
>>>
>> Oh my God, I don't want to, but I just have to ask: Why?
> 
> Because TeX has nothing to do with either Perl, Python, Lisp, Java, or 
> functional programming.
> 
That's not an answer to my question and you know it.

But OK, F'up to c.l.tex (makes me wonder why Xah didn't ... well, 
actually it doesn't, nevermind ;))


/W


From grante at visi.com  Fri Oct 12 18:10:08 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 22:10:08 -0000
Subject: test if email
References: <feojgb$k16$01$1@news.t-online.com>
	<1192220077.109848.74740@e9g2000prf.googlegroups.com>
	<feon78$m0k$2@solaris.cc.vt.edu>
	<1192226082.234159.249960@i13g2000prf.googlegroups.com>
Message-ID: <13gvs60njv01a5c@corp.supernews.com>

On 2007-10-12, George Sakkis <george.sakkis at gmail.com> wrote:
> On Oct 12, 4:59 pm, brad <byte8b... at gmail.com> wrote:
>> kyoso... at gmail.com wrote:
>> > On Oct 12, 2:55 pm, Florian Lindner <Florian.Lind... at xgm.de> wrote:
>> >> Hello,
>> >> is there a function in the Python stdlib to test if a string is a valid
>> >> email address?
>>
>> here's a Perl re example... I don't know whether to laugh or cry...
>> don't try to replicate this in Python or you'll hurt yourself. :)
>>
>> "... the only sure way to see if a supplied email address is genuine is
>> to send an email to it and see if the user recieves it."
>>
>> http://ex-parrot.com/~pdw/Mail-RFC822-Address.html
>
> Gotta love the comment: "somewhat pushes the limits of what it is
> sensible to do with regular expressions".

OK, I want to know if a human generate that RE, or if it was
generated mechanically from the grammar specification.  It's
hard to imagine the former, but you never know when it comes to
Perl programmers.

-- 
Grant Edwards                   grante             Yow! Hmmm ... an arrogant
                                  at               bouquet with a subtle
                               visi.com            suggestion of POLYVINYL
                                                   CHLORIDE ...


From musiccomposition at gmail.com  Tue Oct  9 22:42:53 2007
From: musiccomposition at gmail.com (Benjamin)
Date: Wed, 10 Oct 2007 02:42:53 -0000
Subject: Jython import coventions
Message-ID: <1191984173.960048.278230@19g2000hsx.googlegroups.com>

When importing Java packages in Jython, what is the convention to
simplify imports? For example:
import java.util as util
Is this correct? Or should I use from * import *?



From python.list at tim.thechases.com  Mon Oct  1 15:00:25 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 01 Oct 2007 14:00:25 -0500
Subject: Combine two dictionary...
In-Reply-To: <fdrerp$8ot$1@sea.gmane.org>
References: <1191259479.116112.104550@w3g2000hsg.googlegroups.com>	<mailman.1357.1191260483.2658.python-list@python.org>	<1191261690.056215.179920@57g2000hsv.googlegroups.com>
	<fdrerp$8ot$1@sea.gmane.org>
Message-ID: <470143C9.9080305@tim.thechases.com>

>> I want to total score..
>> For example
>>>> dict1={1: 4,  3: 5}... and 2 millions element
>>>> dict2={3: 3,  8: 6}... and 3 millions element
>> result should be dict3={1:4, 3:8, 8:6}
> 
> Well not sure how this will work with 5+ million elements, but here's 
> one stab at it:
> 
>      >>> dict1={1: 4,  3: 5}
>      >>> dict2={3: 3,  8: 6}
>      >>> for key in set(dict1.keys() + dict2.keys()):
>      ...     x = dict1.get(key, 0)
>      ...     y = dict2.get(key, 0)
>      ...     dict3[key] = x + y
>      ...
>      >>> dict3
>      {8: 6, 1: 4, 3: 8}

Or if doing it in-place is sufficient, you can use

   for k,v in dict2.iteritems():
     dict1[k] = dict1.get(k, 0) + v

Or, if you like stupid iterator/comprehension tricks

   dict1.update(
     (k,dict1.get(k, 0) + v)
     for k,v in dict2.iteritems()
     )

-tkc





From martin at marcher.name  Tue Oct 30 08:42:01 2007
From: martin at marcher.name (Martin Marcher)
Date: Tue, 30 Oct 2007 13:42:01 +0100
Subject: Proxying downloads
Message-ID: <5fa6c12e0710300542h1c7357dfo2f2f74417acff2be@mail.gmail.com>

Hello,

more a recipe question. I'm working on a proxy that will download a
file for a client. The thing that doesn't yield problems is:

Alice (Client)
Bob (Client)
Sam (Server)

1 Alice asks Sam for "foobar.iso"
2 Sam can't find "foobar.iso" in "cachedir"
3 Sam requests "foobar.iso" from the uplink
4 Sam now saves each chunk received to "cachedir/foobar.iso"
5 At the same time Sam forwards each chunk to Alice.

But I can't figure out how I would solve the following:

1 Alice asks Sam for "foobar.iso"
2 Sam can't find "foobar.iso" in "cachedir"
3 Sam requests "foobar.iso" from uplink
4 Sam saves and forwards to Alice
5 At about 30 % of the download Bob asks Sam for "foobar.iso"
6 How do I serve Bob now?

Now because the internal link is _a lot_ faster than the uplink Bob
will probably reach the end of (the local) "foobar.iso" before Sam has
received "foobar.iso" in total from uplink. So Bob will end up with a
incomplete file...

How do I solve that. The already downloaded data should of course be
served internally.

The solutions I think of are
 * Some kind of subscriber list for the file in question
  * That is serve internally and if the state of "foobar.iso" is in
progress switch to receiving chunk directly from Sam as it comes down
the link
  * How would I realize this switch from internal serving to pass thru
of chunks?

 * Send an acknowledge (lie to the client that we have this file in
the cache) wait until it's finished and then serve the file from the
internal cache)
  * This could lead to timeouts for very large files, at least I think so

 * Forget about all of it and just pass thru from uplink, with a new
request, as long as files are in progress. This would in the worst
case download the file n times where n is the number of clients.
  * I guess that's the easiest one but also the least desirable solution.

I hope I explained my problem somehow understandable.

any hints are welcome
thanks
martin

-- 
http://noneisyours.marcher.name
http://feeds.feedburner.com/NoneIsYours


From macrovidala at naver.com  Fri Oct 19 04:45:15 2007
From: macrovidala at naver.com (zooey)
Date: Fri, 19 Oct 2007 01:45:15 -0700 (PDT)
Subject: Enso or Launchy like UI from Python
Message-ID: <13290522.post@talk.nabble.com>



Hi there,

I want to make transparent/launcher-like window application using python.

(similar as Enso, Launchy, etc. I know Enso written in python.)

Is there any open source project like it or any example? 


Thanks,

  Aaron.

  
-- 
View this message in context: http://www.nabble.com/Enso-or-Launchy-like-UI-from-Python-tf4651810.html#a13290522
Sent from the Python - python-list mailing list archive at Nabble.com.



From ldo at geek-central.gen.new_zealand  Thu Oct  4 19:28:45 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 05 Oct 2007 12:28:45 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
	<fe141n$9u8$1@lust.ihug.co.nz> <13g9ch1fi5c7se5@corp.supernews.com>
	<fe2dl2$4i7$3@lust.ihug.co.nz> <13gasot6r5bnu1a@corp.supernews.com>
Message-ID: <fe3svd$2nb$3@lust.ihug.co.nz>

In message <13gasot6r5bnu1a at corp.supernews.com>, Steven D'Aprano wrote:

> What does type(os.path) return when you try it?

It returns the type of the value contained in that variable, of course:

    >>> import os
    >>> os.path = 3
    >>> type(os.path)
    <type 'int'>

See, it's just a variable, like any other.


From parnell.s at comcast.net  Wed Oct 17 17:58:36 2007
From: parnell.s at comcast.net (Ixiaus)
Date: Wed, 17 Oct 2007 14:58:36 -0700
Subject: Noob questions about Python
In-Reply-To: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
Message-ID: <1192658316.048082.212190@v23g2000prn.googlegroups.com>

Thank you for the quick responses.

I did not know that about integer literals beginning with a '0', so
thank you for the explanation. I never really use PHP except for
handling basic forms and silly web stuff, this is why I picked up
Python because I want to teach myself a more powerful and broad
programming language.

With regard to why I asked: I wanted to learn about Binary math in
conjunction with Python, so I wrote a small function that would return
a base 10 number from a binary number. It is nice to know about the
int() function now.

Just for the sake of it, this was the function I came up with:

def bin2dec(val):
    li = list(val)
    li.reverse()
    res = [int(li[x])*2**x for x in range(len(li))]
    res.reverse()
    print sum(res)

Now that I look at it, I probably don't need that last reverse()
because addition is commutative...

def bin2dec(val):
    li = list(val)
    li.reverse()
    res = [int(li[x])*2**x for x in range(len(li))]
    print sum(res)

It basically does the same thing int(string, 2) does.

Thank you for the responses!



From david at asdf.asdf  Tue Oct 30 19:58:47 2007
From: david at asdf.asdf (bambam)
Date: Wed, 31 Oct 2007 10:58:47 +1100
Subject: basic threading question
Message-ID: <13ifh9hf5eor49f@corp.supernews.com>

Are function variables thread safe?

def f(a):
    # whatever
    return float(a)

Is that OK?

def f(a):
    #whatever
    b=a:
    #whatever:
    return float(b)

Is that OK?

Steve. 




From jjkk73 at gmail.com  Tue Oct  2 05:33:21 2007
From: jjkk73 at gmail.com (jorma kala)
Date: Tue, 2 Oct 2007 11:33:21 +0200
Subject: Using ImageGrab (PIL) to capture screen of remote computer
Message-ID: <bda7ac6d0710020233x52ca9f7fsa2a8c834fac15bdd@mail.gmail.com>

Hi,

Is it possible to use ImageGrab of the Python Imaging Library to capture the
screen of a remote computer?

I'm running my python program on a computer that is connected directly via a
ethernet crossover cable to another computer.
Can I somehow get ImageGrab to grab the display of the remote computer by
specifying the IP address ?

Thanks a lot

jorma
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071002/9376f5bb/attachment.html>

From timaranz at gmail.com  Thu Oct 11 20:22:31 2007
From: timaranz at gmail.com (timaranz at gmail.com)
Date: Thu, 11 Oct 2007 17:22:31 -0700
Subject: decorating container types (Python 2.4)
In-Reply-To: <femava$i4b$1@daisy.noc.ucla.edu>
References: <1192138976.165419.25820@19g2000hsx.googlegroups.com>
	<femava$i4b$1@daisy.noc.ucla.edu>
Message-ID: <1192148551.690908.111090@q5g2000prf.googlegroups.com>

On Oct 12, 12:19 pm, James Stroud <jstr... at mbi.ucla.edu> wrote:
> timar... at gmail.com wrote:
> > Hi,
>
> > I have a container class A and I want to add functionality to it by
> > using a decorator class B, as follows:
>
> > class A(object):
> >     def __len__(self):
> >         return 5
>
> > class B(object):
> >     def __init__(self, a):
> >         self._a = a
>
> >     def __getattr__(self, attr):
> >         return getattr(self._a, attr)
>
> >     def other_methods(self):
> >         blah blah blah
>
> > I was expecting len(B) to return 5 but I get
> > AttributeError: type object 'B' has no attribute '__len__'
> > instead.
> > I was expecting len() to call B.__len__() which would invoke
> > B.__getattr__ to call A.__len__ but __getattr__ is not being called.
> > I can work around this, but I am curious if anyone knows _why_
> > __getattr__ is not being called in this situation.
>
> > Thanks
> > Tim
>
> The why part is that __len__ is an unbound method of the class, not an
> unbound method of the class's metaclass. Also, your code above makes
> absolutely no association between classes A and B, which is the most
> fundamental reason.
>
> James
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA  90095
>
> http://www.jamesstroud.com

Just so I'm clear on this: Are you saying that the problem with my
original code is that len() is equivalent to type(x).__len__(x) that
looks for a class attribute rather than an instance attribute as my
code requires?

I don't own class A and they are generated by function calls rather
than instantiated directly, that's why I'm decorating them instead of
inheriting.  The crux of the (academic) question is why does len()
expect '__len__' to be a class attribute instead of an instance
attribute, and why is this a good idea?

Cheers
Tim



From hniksic at xemacs.org  Wed Oct 31 19:27:46 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Thu, 01 Nov 2007 00:27:46 +0100
Subject: setting variables in outer functions
References: <mailman.598.1193689199.13605.python-list@python.org>
	<87myu1k4rm.fsf@mulj.homelinux.net>
	<YYKdnQDGBbbw8LvanZ2dnUVZ_jmdnZ2d@comcast.com>
	<slrnfiejco.18k.horpner@FIAD06.norwich.edu>
	<Xns99D9A7C74BD8Dduncanbooth@127.0.0.1>
	<1193830119.542006.137750@o38g2000hse.googlegroups.com>
	<Xns99DA7B469B79Fduncanbooth@127.0.0.1>
	<1193870968.747606.281180@50g2000hsm.googlegroups.com>
	<mailman.714.1193871602.13605.python-list@python.org>
Message-ID: <87ir4mj24t.fsf@mulj.homelinux.net>

"Chris Mellon" <arkanes at gmail.com> writes:

> I have no idea why someone who already has a working, object system
> would want to implement their own on top of closures.

This subthread is getting ridiculous -- closures are *not* useful only
for implementing object systems!  The object system thing is just a
method of teaching abstractions popularized by SICP.  Abstractions
normally taken for granted, such as objects, or even expression
evaluation, are implemented from scratch, using only the most basic
primitives available.  In a Lisp-like language with lexical scope, the
most basic storage primitive is the lexical environment itself[1].

In real-life code, closures are used to implement callbacks with
automatic access to their lexical environment without the need for the
bogus additional "void *" argument one so often sees in C callbacks,
and without communication through global variables.  If the callbacks
can access variables in the outer scope, it's only logical (and
useful) for them to be able to change them.  Prohibiting modification
reduces the usefulness of closures and causes ugly workarounds such as
the avar[0] pattern.

If closures were useful only for implementing bogus object systems,
neither they nor "nonlocal" would have made it to Python in the first
place.


[1]
An illustration of that principle is an implementation of cons, the
most primitive Lisp storage type, without the use of a higher-level
storage object (such as a two-element vector):

(defun cons (x y)
  (lambda (op)
    (if op x y)))
(defun car (cons) (funcall cons t))
(defun cdr (cons) (funcall cons nil))


From bscrivener42 at gmail.com  Tue Oct 30 10:42:29 2007
From: bscrivener42 at gmail.com (BartlebyScrivener)
Date: Tue, 30 Oct 2007 07:42:29 -0700
Subject: Readline and record separator
In-Reply-To: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
References: <1193746908.551018.130240@z9g2000hsf.googlegroups.com>
Message-ID: <1193755349.469347.44690@d55g2000hsg.googlegroups.com>

On Oct 30, 7:21 am, Johny <pyt... at hope.cz> wrote:
> My problem is that my record consits several '\n' and when I use
> readline it does NOT read the whole my record.
> So If I could change '\n' as  a record separator for readline, it
> would solve my problem.

Python Cookbook (great book!) 2nd Ed pg. 717: "Iterating on a Stream
of Data Blocks as a Stream of Lines."

Allows you to specify both eol for source and output file.

rd



From robert.kern at gmail.com  Fri Oct  5 01:12:33 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 05 Oct 2007 00:12:33 -0500
Subject: module confusion
In-Reply-To: <fe3svd$2nb$3@lust.ihug.co.nz>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>	<mailman.1379.1191301581.2658.python-list@python.org>	<fdsopm$kd6$4@lust.ihug.co.nz>	<mailman.1404.1191345163.2658.python-list@python.org>	<fdvpu1$ejq$2@lust.ihug.co.nz>
	<874ph8sdhx.fsf@benfinney.id.au>	<fe141n$9u8$1@lust.ihug.co.nz>
	<13g9ch1fi5c7se5@corp.supernews.com>	<fe2dl2$4i7$3@lust.ihug.co.nz>
	<13gasot6r5bnu1a@corp.supernews.com> <fe3svd$2nb$3@lust.ihug.co.nz>
Message-ID: <fe4h43$u4m$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <13gasot6r5bnu1a at corp.supernews.com>, Steven D'Aprano wrote:
> 
>> What does type(os.path) return when you try it?
> 
> It returns the type of the value contained in that variable, of course:
> 
>     >>> import os
>     >>> os.path = 3
>     >>> type(os.path)
>     <type 'int'>
> 
> See, it's just a variable, like any other.

Oooookay. No one is contending that the "os.path" name can't be reassigned to a
different object or that the "os.path" name is somehow different from any other
name in Python. It's not wrong to say that "os is a module" either, even though
you can obviously reassign that name to another object, too.

What I meant when I said "os.path is a bit of a weird case" is that, by default,
the object referred to by the name "os.path" (assuming you've imported the
standard library's os module) is another module and that os itself is a module,
not a package like logging is. This is somewhat odd, because most modules aren't
exposed that way. They are either in their own file and accessed by importing
them directly, or they are inside a package.

-- 
Robert Kern

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



From zorg724 at yahoo.fr  Sat Oct 20 05:03:55 2007
From: zorg724 at yahoo.fr (sccs cscs)
Date: Sat, 20 Oct 2007 11:03:55 +0200 (CEST)
Subject: Display all properties with reflection
Message-ID: <73182.71533.qm@web90504.mail.mud.yahoo.com>

Hello,
I like create a methode that display all the properties of an instance of classe with their value.
I try the following code: see     def __str__ (self) methode.
But it displays only the instance attributes values not the properties and their value.
In pseudo-code:
For Each Properties :
   print  property_name,  property_value

It is possible ? Where is the collection of properties into the Python Object Metamodele?

Thank you.
Zorgi

class PhysicalObject(Subject):
    """
    Base class for physical Object
    They inherit from Subject whose contract are:
        def attach(self, observer)
        def detach(self, observer)
        def notify(self, modifier = None)
    
    """
    def __init__(self, World, Space, ThePhysicalProperties):
        """

        """
        #Initialize Subject-Observers mecanism
        Subject.__init__(self)
        self.__name  = None
        ....
        
    ...
    def __str__ (self):
        """
        Return a string that describe the value of all attributes for the instance
        """
        result = None
        msgList = ["%s --->%s"%(str(attribute), str(value)) for (attribute, value) in  self.__dict__.items()]
        msgList.sort()
        result  = "\n\n%s instance :" % (self.__class__.__name__)
        result += "\n".join (msgList)
        return result
    
     
    Name               = property(fget = __getName,               fset = __setName)
    Position           = property(fget = __getPosition,           fset = __setPosition)
    LinearVelocity     = property(fget = __getLinearVelocity,     fset = __setLinearVelocity)
    AngularVelocity    = property(fget = __getAngularVelocity,     fset = __setAngularVelocity)
    RotationMatrice    = property(fget = __getRotationMatrice,    fset = __setRotationMatrice)
    Masse              = property(fget = __getMass,              fset = __setMass)
    GravityMode        = property(fget = __getGravityMode,        fset = __setGravityMode)




             
---------------------------------
 Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071020/148bbe7f/attachment.html>

From steven.bethard at gmail.com  Wed Oct 10 14:04:22 2007
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 10 Oct 2007 12:04:22 -0600
Subject: Problem of Readability of Python
In-Reply-To: <mailman.31.1192033699.927.python-list@python.org>
References: <1191780456.833563.173080@57g2000hsv.googlegroups.com>
	<mailman.31.1192033699.927.python-list@python.org>
Message-ID: <CaadnRpxePu7iZDanZ2dnUVZ_tfinZ2d@comcast.com>

Kevin wrote:
> Am I missing something, or am I the only one who explicitly declares
> structs in python?
> 
> For example:
> FileObject = {
>     "filename" : None,
>     "path" : None,
>     }
> 
> fobj = FileObject.copy()
> fobj["filename"] = "passwd"
> fobj["path"] = "/etc/"

Yes, I think this is the only time I've ever seen that. I think the 
normal way of doing this in Python is:

     class FileObject(object):
         def __init__(self, filename, path):
             self.filename = filename
             self.path = path

     fobj = FileObject(filename='passwd', path='etc')

STeVe


From tobiaskk at mac.com  Sun Oct 14 14:30:16 2007
From: tobiaskk at mac.com (Tobias K.)
Date: Sun, 14 Oct 2007 20:30:16 +0200
Subject: int to str in list elements..
In-Reply-To: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
References: <1192384956.127445.316920@e9g2000prf.googlegroups.com>
Message-ID: <fetn7n$30n$1@news01.versatel.de>

1. Use a generator expression:
b = ",".join(str(i) for i in a)

or

2. Use imap
from itertools import imap
b = ",".join(imap(str, a))


From deets at nospam.web.de  Thu Oct 25 08:26:42 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 25 Oct 2007 14:26:42 +0200
Subject: about functions question
References: <1193293696.450188.108330@q3g2000prf.googlegroups.com>
	<1193304629.429307.50980@v3g2000hsg.googlegroups.com>
	<1193305621.987689.24060@o80g2000hse.googlegroups.com>
	<1193314722.985517.252220@d55g2000hsg.googlegroups.com>
Message-ID: <5obgc2Fga09uU1@mid.uni-berlin.de>

NoName wrote:

> sorry! Yes it's work.
> What about 2 question?
> Can i put function after main block?

> print qq()
> 
> def qq():
>   return 'hello'

You can't call a thing before it is defined.

> Traceback (most recent call last):
>   File "C:\Python25\projects\indexer\test.py", line 1, in <module>
>     print qq()
> NameError: name 'qq' is not defined
> 
> 
> Or onli possible:
> 
> def main():
>  print qq()
> 
> def qq():
>   return 'hello'
> 
> main()

Yes. That's the way to go.

Diez


From tim at timgolden.me.uk  Mon Oct 22 13:44:15 2007
From: tim at timgolden.me.uk (Tim Golden)
Date: Mon, 22 Oct 2007 18:44:15 +0100
Subject: Iteration for Factorials
In-Reply-To: <Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<5o3jalFl0n43U1@mid.uni-berlin.de>	<1193056647.416562.36150@q3g2000prf.googlegroups.com>	<oV0Ti.5015$aa6.4792@tornado.fastwebnet.it>	<1193057676.680959.71780@v23g2000prn.googlegroups.com>	<1193064348.526006.183080@q5g2000prf.googlegroups.com>	<Xm3Ti.5404$aa6.2113@tornado.fastwebnet.it>	<mailman.332.1193067904.13605.python-list@python.org>
	<Jb4Ti.72$BB6.22@tornado.fastwebnet.it>
Message-ID: <471CE16F.5090408@timgolden.me.uk>

Marco Mariani wrote:
> Tim Golden wrote:
> 
>>>  From the cookbook, this time.
>>> It satisfies the requirements nicely  ;)
>>>
>>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496691
>> [... snip the ultimate general-purpose answer to the OP's question ...
>>
>> I really hope that's a wink up there, Marco.
> 
> The wink is in the second line of my post... 

I did see it :)

>> The poor guy was just trying to get his homework done!
> 
> I don't see how my answer is in any way worse than those based on 
> lambda. 

Nor do I. I was just joking with a colleague that the guy
just wanted a bit of help (which he did get, in fact from
several sources) and then out came the lambda and the
decorator. It's only a moment before the metaclass and
the Twisted solution come along. :)
(It's like watching a convention of lisp programmers --
ducks, runs for cover)

TJG


From jimmy.musselwhite at gmail.com  Fri Oct 26 18:35:54 2007
From: jimmy.musselwhite at gmail.com (jimmy.musselwhite at gmail.com)
Date: Fri, 26 Oct 2007 15:35:54 -0700
Subject: Going past the float size limits?
Message-ID: <1193438154.931341.30450@50g2000hsm.googlegroups.com>

Hello all
It would be great if I could make a number that can go beyond current
size limitations. Is there any sort of external library that can have
infinitely huge numbers? Way way way way beyond say 5x10^350 or
whatever it is?

I'm hitting that "inf" boundary rather fast and I can't seem to work
around it.

Thanks!



From besturk at gmail.com  Tue Oct 23 09:30:18 2007
From: besturk at gmail.com (Abandoned)
Date: Tue, 23 Oct 2007 06:30:18 -0700
Subject: How can i protect text format ?
Message-ID: <1193146218.068145.61540@y27g2000pre.googlegroups.com>

Hi..
I want to do a forum with python but i have a problem..

I have a <textarea> and i write:
line 1 hi
line 2 how r u

And then i save to this database ( colomn data type is text)
And than it looks "line 1 hi line 2 how r u"..
How can i protect \n characters ?



From pavlovevidence at gmail.com  Wed Oct 10 09:57:15 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 10 Oct 2007 06:57:15 -0700
Subject: Singleton
In-Reply-To: <13gplgh75hot354@corp.supernews.com>
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<13gplgh75hot354@corp.supernews.com>
Message-ID: <1192024635.416697.210620@o3g2000hsb.googlegroups.com>

On Oct 10, 9:39 am, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Wed, 10 Oct 2007 09:36:56 +0000, pythoncurious wrote:
> > So how do people solve this? Is there an obvious way that I missed?
>
> Mostly by avoiding singletons. Why do you need only one instance? Perhaps
> you should consider the Borg pattern instead.
>
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531


That wouldn't help.  In the OP's case, it would create two borgs.  Did
anyone actually read the OP's post?  Or is this just an opportunity to
pimp libraries and bicker about style?


Carl Banks



From konryd at gmail.com  Wed Oct 31 04:58:15 2007
From: konryd at gmail.com (konryd)
Date: Wed, 31 Oct 2007 08:58:15 -0000
Subject: Python Interview Questions
In-Reply-To: <mailman.658.1193771958.13605.python-list@python.org>
References: <1193768041.349129.26350@v3g2000hsg.googlegroups.com>
	<mailman.658.1193771958.13605.python-list@python.org>
Message-ID: <1193821095.670628.187210@y42g2000hsy.googlegroups.com>


> - string building...do they use "+=" or do they build a list
>    and use .join() to recombine them efficiently


I'm not dead sure about that, but I heard recently that python's been
optimized for that behaviour. That means: using += is almost as fast
as joining list. Besides, "+=" is more obvious than the other choice
and since performance is not a problem until it's a problem, I'd
rather use it. Anyway: I wouldn't pick it for an interview question.

regards
Konrad



From duncan.booth at invalid.invalid  Tue Oct  2 11:31:32 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 2 Oct 2007 15:31:32 GMT
Subject: access __doc__ from within function without reference to function
	name
References: <1191331567.944636.263140@y42g2000hsy.googlegroups.com>
	<mailman.1394.1191336049.2658.python-list@python.org>
Message-ID: <Xns99BDA81BBC0CDduncanbooth@127.0.0.1>

Tim Chase <python.list at tim.thechases.com> wrote:

>> So basically, my question is: is there a way to access a function from
>> within itself without using its name?
> 
> 
> Well, I don't know if it's the best way to do it, but the 
> following code I just threw together does the trick for me:

The original request was to do it without using the function's name, but 
you are depending on that name so your code is easy enough to break. e.g. 
change the definition of f1 to:

   def f2(func):
     "this is f1"
     s = func()
     print s
     return s
   f1 = f2
   del f2
   
and the output is:

A function docstring
A method's docstring
A class docstring
A module docstring
If you got here, there's something I missed
> c:\temp\docstring.py(18)get_doc_string()
-> return funcname
(Pdb)


From paul.hankin at gmail.com  Thu Oct 18 07:47:27 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Thu, 18 Oct 2007 11:47:27 -0000
Subject: Best way to generate alternate toggling values in a loop?
In-Reply-To: <mailman.166.1192705915.13605.python-list@python.org>
References: <1192665353.008563.99280@y27g2000pre.googlegroups.com>
	<1192666776.3244.12.camel@localhost.localdomain>
	<mailman.166.1192705915.13605.python-list@python.org>
Message-ID: <1192708047.649155.272010@z24g2000prh.googlegroups.com>

On Oct 18, 12:11 pm, "Amit Khemka" <khemkaa... at gmail.com> wrote:
> On 10/18/07, Carsten Haese <cars... at uniqsys.com> wrote:
> > Rather than spelling out the final result, I'll give you hints: Look at
> > itertools.cycle and itertools.izip.
>
> Why not just use enumerate ?
>
> clvalues = ["Even", "Odd"]
> for i, (id, name) in enumerate(result):
>     stringBuffer.write('''
>     <tr class="%s">
>            <td>%d</td>
>            <td>%s</td>
>      </tr>
>      '''
>     %
>     (clvalues[i % 2], id, name))

I like this code: straightforward and pragmatic. Everyone else seems
to be reinventing itertools.cycle - they should have listened to
Carsten, and written something like this:

import itertools

clvalues = itertools.cycle(['Even', 'Odd'])
for clvalue, (id, name) in itertools.izip(clvalues, result):
     stringBuffer.write('''
     <tr class="%(name)s">
            <td>%(id)d</td>
            <td>%(clvalue)s</td>
     </tr>''' % locals())

--
Paul Hankin



From mensanator at aol.com  Mon Oct  8 20:41:47 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 17:41:47 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.0.1191885034.916.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1678.1191866649.2658.python-list@python.org>
	<1191874404.292250.87130@y42g2000hsy.googlegroups.com>
	<20071008202558.GB967@sdf.lonestar.org>
	<3605cb0710081525m1b763701n58386e33df177b3d@mail.gmail.com>
	<mailman.0.1191885034.916.python-list@python.org>
Message-ID: <1191890507.511186.17260@57g2000hsv.googlegroups.com>

On Oct 8, 5:48 pm, "J. Cliff Dyer" <j... at sdf.lonestar.org> wrote:
> On 10/8/07, *J. Clifford Dyer* <j... at sdf.lonestar.org
>
> <mailto:j... at sdf.lonestar.org>> wrote:
>
>     On Mon, Oct 08, 2007 at 01:13:24PM -0700, mensana... at aol.com
>     <mailto:mensana... at aol.com> wrote regarding Re: pytz has so many
>     timezones!:
>     >
>     > On Oct 8, 1:03 pm, Carsten Haese < cars... at uniqsys.com
>     <mailto:cars... at uniqsys.com>> wrote:
>     > > On Mon, 2007-10-08 at 10:41 -0700, mensana... at aol.com
>     <mailto:mensana... at aol.com> wrote:
>     > > > For example, Windows has seperate listings for
>     > >
>     > > > Central America
>     > > > Central Time (US & Canada)
>     > > > Guadalahara, Mexico City, Monterry - New
>     > > > Guadalahara, Mexico City, Monterry - Old
>     > > > Saskatchewan
>     > >
>     > > > but they are all GMT-6
>     > >
>     > > But they could have different rules for Daylight Saving Time.
>     >
>     > Which only matters if you're setting your clock.
>     >
>
>     Maybe this is where I'm not understanding you:  Do you have another
>     use for setting a timezone?  The only thing a time zone does, as far
>     as I can tell, is set clocks relative to a shared conception of time.
>
>     --
>    http://mail.python.org/mailman/listinfo/python-list
>
>
>
>
>
> > How about a calendar entry: I've got six people in places all over the
> > world to get on the phone together.  If the app doesn't know their
> > notion of a time zone, that will never happen.
>
> > How about financial transactions: time-stamping transactions that move
> > around the world seems pretty useful to me.  How do I know when said
> > transaction started if I can't convert the user's time into the
> > server's time?
>
> > Timezone is just another localization setting.  It is no different
> > than language or keyboard layout.  It is a piece of data that
> > describes the "world" the user lives in.  Unfortunately, DST makes
> > them very complex because DST is determined by the country and can
> > change from year to year.  I think the US' DST change this year had
> > more of a real-world impact than Y2K (of course, people actually
> > planned for Y2K, but that is a different story :).
>
> > tj
>
> OK.  Those all make sense, but I think they contradict mensanator's
> statement that DST and half-hour offsets "only matter[] if you're
> setting your clock."  None of those are meaningful with 25 generic time
> zones, which was what I was trying to understand.  Under what normal
> circumstances (outside of the US military creating an approximation for
> their own internal usage) could 25 tzs be a useful abstraction?

It's how the world goes around.

Some people can't see the forest for the trees.

Is it obvious from all this timezone crap that

 - a day lasts 48 hours?

 - it can never be the same day everywhere in the world
   simultaneously?

Isn't that just as important for worldwide transactions
as Daylight Savings Time (or lack thereof)?

Perhaps, once the basics
<http://members.aol.com/rotanasnem/truth/eykw_t40.htm>
are understood, the details won't be so confusing.

>
> Cheers,
> Cliff



From grante at visi.com  Tue Oct  9 00:04:32 2007
From: grante at visi.com (Grant Edwards)
Date: Tue, 09 Oct 2007 04:04:32 -0000
Subject: why did MIT drop scheme for python in intro to computing?
References: <1191432204.361780.129850@d55g2000hsg.googlegroups.com>
	<a46fg35pmiknu1lofa0339l4ge4r8hojun@4ax.com>
	<1191863837.105036.45510@22g2000hsm.googlegroups.com>
	<Pine.LNX.4.64.0710081953040.9784@ttleush>
	<fee3jr$2oo$1@agate.berkeley.edu>
	<1191900533.823209.252590@o3g2000hsb.googlegroups.com>
Message-ID: <13glvegpugvbb19@corp.supernews.com>

On 2007-10-09, gnuist006 at hotmail.com <gnuist006 at hotmail.com> wrote:

> Does scheme have a gui library?

Yes.  It had a far, far better Tk binding than Python.

  http://kaolin.unice.fr/STk/

I've used both for real-world applications, and STk was _miles_
ahead of tkinter.  It was a real, native binding to the Tk
library rather than something stuck together with TCL.  GUI
widgets were real Scheme objects that acted the way one
expected them to, rather than wrapped TCL objects.

However, Tk has been largely abandoned in favor of a native
GTK+ binding

  http://www.stklos.org/

-- 
Grant Edwards                   grante             Yow!  You should all JUMP
                                  at               UP AND DOWN for TWO HOURS
                               visi.com            while I decide on a NEW
                                                   CAREER!!


From seandavi at gmail.com  Wed Oct 31 16:24:43 2007
From: seandavi at gmail.com (Sean Davis)
Date: Wed, 31 Oct 2007 20:24:43 -0000
Subject: XML DOM, but in chunks
Message-ID: <1193862283.829628.122480@k79g2000hse.googlegroups.com>

I have some very large XML files that are basically recordsets.  I
would like to access each record, one-at-a-time, and I particularly
like the ElementTree library for accessing the data.  Is there a way
to have ElementTree read only one record of the data at a time?
Alternatively, are there other ways that would allow one to parse out
a record at a time and maintain some nice ways of accessing the
elements within the record?

Thanks,
Sean



From erik at myemma.com  Thu Oct 11 13:17:51 2007
From: erik at myemma.com (Erik Jones)
Date: Thu, 11 Oct 2007 12:17:51 -0500
Subject: storing meta data on dictionary keys
In-Reply-To: <1192084587.386653.325480@22g2000hsm.googlegroups.com>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
	<mailman.66.1192075270.927.python-list@python.org>
	<1192084587.386653.325480@22g2000hsm.googlegroups.com>
Message-ID: <3276770E-D3C2-4EE9-8315-733335D12F7B@myemma.com>


On Oct 11, 2007, at 1:36 AM, Andreas Kraemer wrote:

> On Oct 10, 9:00 pm, Erik Jones <e... at myemma.com> wrote:
>> If you're sure that 1.  this use case won't grow and 2. that you'll
>> only be the only person ever using code, then it's your choice of
>> preference.  Both of those points are equally important.  1 is a
>> manageability issue in that you are complicating what could be an
>> easy solution for a small gain in convenience -- one that could just
>> as easily be had by encapsulating the management of both dicts in an
>> explicit class or function/method.  Let me quote lines 2 through 5 of
>> The Zen of Python (PEP20):
>>
>> Explicit is better than implicit.
>> Simple is better than complex.
>> Complex is better than complicated.
>> Flat is better than nested.
>>
>> Using two dicts would be explicit, simple and flat.  Your's is none
>> of those.
>>
>> For point 2, if anyone else needs to work with your code they're most
>> likely going to be confused as the implementation is overly complex.
>> I know when I initially read through it I had to read it a couple
>> times to assure myself of what it was doing because I was thinking
>> that it seems that there's more going on than there is, so there must
>> be.  Remember, the best solutions are those that not only you can
>> understand, but the next guy/girl/?.
>
> You are right, and these are all very valid points. One of the reasons
> I like Python so much is the philosophy behind it. Nevertheless,
> everything is relative, so a pattern that seems complex (or unusual)
> at first may become simple when people get used to it ... I hope, I
> may be excused. In the organization where I work I am mainly
> prototyping (more on the "scientific/algorithm" side) and not required
> to write maintainable code. The engineers will do that (in Java
> anyway, sadly ..).

Excellent.  I'm actually love "hackish" approaches to things when you  
can afford to use them and it seems like you're in that situation.
>
>>> The trivial "class Str(str): pass" in the OP (that already inherits
>>> the correct __hash__ and
>>> __eq__) serves the same purpose as your Node(object) below, ...
>>
>> True, but you're breaking the intended abstraction of inheriting from
>> str, i.e. the reason you can inherit from str is so that you can
>> specialize strings, not get __has__ and __eq__ for free.  You can
>> define those on your own for a reason.
>
> Who says that that's the intended abstraction of inheriting from str?
> I thought that one purpose of inheritance was the reuse of behavior
> (i.e. methods) (and maybe state) of the superclass. So, my class
> Str(str): pass behaves like a string in all aspects, except that you
> can attach some meta data that won't affect that behavior. In fact, I
> use that pattern quite frequently also for other built-in immutable
> types, e.g. floats or ints, which allows me to very easily "tag"
> numerical data (e.g. as an outlier in a stats application or whatever)
> without affecting any subsequent code operating on it as long as it
> only uses its built-in "flavor". This is the power of Python's duck
> typing!

No, duck typing and inheritance are two different things.  Duck  
typing is when you implement the same operations as another object or  
class, whereas with inheritance you get the same implementation as  
that of the parent class.  With duck typing, an object "acts like"  
another object in specific contexts.  With inheritance, an object is  
the same general type as another object.  You don't want string  
objects, you want objects that, in a specific case, act like strings  
but in others, I'm sure, not.  How does a concept like string  
substitution fit with your inherited objects?

>> So, (explicitly:) you want the built-in dict to be a dictionary that
>> also maintains a dictionary of its own key
>
> Without knowing the internals, so I may be wrong. But dict must
> somehow maintain a dictionary of the key objects already. How else
> could it detect collisions of hash values, when it must use __eq__ to
> determine equality of the "query" key object to one of the inserted
> keys having the same hash value? It also needs to do the same check
> when overwriting an existing key.

If you can, get a copy of Beautiful Code (easily had from Amazon or  
the likes).  It contains an chapter on Python's dictionary  
implementation.

>> Not likely to happen.
>> Again, you're asking to have one dictionary act as two and that's
>> just confusing.  I'm not saying that get_key is a bad idea for
>> (possibly) some use cases, just that what you're actually doing is
>> creating a dictionary wherein the same key can return two different
>> object depending on the retrieval method used and that is NOT what
>> the built-in dict is for.  In fact, now that I think of it, get_key
>> is probably a bad name for it, get_other_object_with_this_same_key is
>> probably more apt :)
>
> Or more precise:
> get_key_that_was_used_when_value_was_inserted_into_dictionary :-)

I like it!


Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From jjkk73 at gmail.com  Sun Oct  7 06:07:32 2007
From: jjkk73 at gmail.com (jorma kala)
Date: Sun, 7 Oct 2007 12:07:32 +0200
Subject: Problem using subprocess.Popen on windows
Message-ID: <bda7ac6d0710070307o96209a1r9b41690355440028@mail.gmail.com>

Hi,

I get an error that I don't understand when using the subprocess module on
Windows.
I guess I'm missing out something very basic.
For instance, to execute and capture the output of the ms-dos dir command, I
tried the following:


from subprocess import *

p1 = Popen(["dir"],  stdout=PIPE)
output = p1.communicate()[0]


But I get a WindowsError : [Error 2]  File Not Found


The exact traceback is :

Traceback (most recent call last):
  File "pipe2.py", line 5, in <module>
    p1 = Popen(["dir"],  stdout=PIPE)
  File "C:\Python25\lib\subprocess.py", line 593, in __init__
    errread, errwrite)
  File "C:\Python25\lib\subprocess.py", line 815, in _execute_child
    startupinfo)
WindowsError: [Error 2] Le fichier sp?cifi? est introuvable


Do you know what is missing in my code?

Thanks a lot

jorma
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071007/b0c94d6c/attachment.html>

From kay.schluehr at gmx.net  Sat Oct 27 02:08:05 2007
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: Fri, 26 Oct 2007 23:08:05 -0700
Subject: Finding decorators in a file
In-Reply-To: <1193447658.249597.178110@57g2000hsv.googlegroups.com>
References: <1193447658.249597.178110@57g2000hsv.googlegroups.com>
Message-ID: <1193465285.125001.200930@v3g2000hsg.googlegroups.com>

On Oct 27, 3:14 am, Andrew  West <andreww... at gmail.com> wrote:
> Probably a bit of weird question. I realise decorators shouldn't be
> executed until the function they are defined with are called,  but is
> there anyway for me to find all the decorates declared in a file when
> I import it? Or perhaps anyway to find the decorators by loading the
> file by other methods (with out simply parsing it by hand).

There is no need for having *parser Angst* in Python. Once you
understand the syntactical structure of the language it's easy to move
on. I show you how to deal with it using EasyExtend for grepping parse
trees ( which is much easier than using regexps for that purpose ).
Alternatively you can use the compiler package. It hides some low
level stuff being present in EE on this level. You need to decide how
you want to reduce mental overhead and achieve simplicity that "fits
your brain".

EasyExtend is available at www.fiber-space.de

Here is a small tutorial:

# purpose -- seeking for decorators and decorated functions in Python
2.5 stdlibs contextlib.py

import inspect
import parser
import symbol
import token

# just import contextlib, keep source and create a parse tree

import contextlib
src = inspect.getsource(contextlib)  # keep source
cst = parser.suite(src).tolist()     # create concrete syntax tree as
a nested list

# so far its all standard lib stuff...
# ... now something new:

from EasyExtend.csttools import find_node, find_all

functions  = find_all(cst, symbol.funcdef)

# You need to know how these nodes are structured to get more
information out of them
# This can be looked up in EasyExtend/Grammar which contains a copy of
Pythons Grammar or
# in the same file in Pythons source distribution. Here are the
relevant rules:

# decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
# decorators: decorator+
# funcdef: [decorators] 'def' NAME parameters ':' suite

# We see immediately that it's not all that simple. Decorators can be
methods and the first name
# in dotted-name can be the name of an object. For demonstration
purposes we simplify our
# assumptions and suppose to have plain function decorators

func_info = {}

for f in functions:

    decorator_info = set()  # store decorator information here

    decorators = find_node(f, symbol.decorators) # we do *not* want
all decorators
                                                 # since there might
be those related to
                                                 # a closure that is
handled separately
    if decorators:
        decos     = find_all(decorators, symbol.decorator)
        for deco in decos:
            # token.NAME has structure [1, 'name', line_no]
            deco_name = find_node(deco, token.NAME)[1]
            args      = find_node(deco, symbol.arglist)  # ... we
analyze args later
            decorator_info.add((deco_name, args))

        f_names = find_all(f, token.NAME, level = 1)  # set level
information otherwise you
                                                      # get all names
defined anywhere in
                                                      # funcdef
        func_name = f_names[1][1]  # the first name is 'def', the
second one the func_name
        func_info[func_name] = decorator_info

# Note: you can move from syntax tree representation straightforward
back to a textual
#       representation. This requires not much work but the following
import is nevertheless
#       conceptual overhead I do not try to explain in detail here:

from EasyExtend.fibers.zero.fiber import unparse   # zero represents
*Python* in the larger
                                                   # context of
EasyExtend applications
                                                   # unparse
transforms a cst of a particular
                                                   # grammar back to
source code

for func_name, deco_info in func_info.items():
    for (deco_name, deco_args) in deco_info:
         print func_name, deco_name, (unparse(deco_args) if deco_args
else "()")

# I get the rather unspectacular result
#    nested contextmanager ()
# You might verify this manually...




From siona at chiark.greenend.org.uk  Fri Oct  5 06:54:30 2007
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 05 Oct 2007 11:54:30 +0100 (BST)
Subject: Python "implements <interface>" equivalent?
References: <1191510706.528876.261780@57g2000hsv.googlegroups.com>
	<47051d47$0$8036$426a74cc@news.free.fr>
	<13ga9kco185sud4@corp.supernews.com>
Message-ID: <oPl*5xyWr@news.chiark.greenend.org.uk>

Grant Edwards  <grante at visi.com> wrote:
>   try:
>       myobj.feature1()
>   except AttributeError:
>       print "object doesn't implement feature1"
>    
>isn't correct, since an unhandled AttributeError generated by
>the feature1 method will print "object doesn't implement
>feature1".

I'd be tempted to argue that it *was* correct, since the object
doesn't implement a feature1 which can be used. (This is the cue
for someone to talk about making sure that myobj's class has
been thoroughly unit tested.)

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
   "Frankly I have no feelings towards penguins one way or the other"
        -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From paul.hankin at gmail.com  Wed Oct 17 07:12:45 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 11:12:45 -0000
Subject: Last iteration?
In-Reply-To: <1192605396.249377.217430@i38g2000prf.googlegroups.com>
References: <fenk0r$5er$03$1@news.t-online.com>
	<5n94u3Fh5e4gU1@mid.uni-berlin.de>
	<fensk8$la6$03$1@news.t-online.com>
	<5nebmhFhp48uU1@mid.uni-berlin.de>
	<fevj8a$imh$01$1@news.t-online.com>
	<1192603763.894935.39680@e34g2000pro.googlegroups.com>
	<1192605396.249377.217430@i38g2000prf.googlegroups.com>
Message-ID: <1192619565.311026.38160@v23g2000prn.googlegroups.com>

On Oct 17, 8:16 am, Raymond Hettinger <pyt... at rcn.com> wrote:
> >     def lastdetecter(iterable):
> >         "fast iterator algebra"
> >         lookahead, t = tee(iterable)
> >         lookahead.next()
> >         t = iter(t)
> >         return chain(izip(repeat(False), imap(itemgetter(1),
> > izip(lookahead, t))), izip(repeat(True),t))
>
> More straight-forward version:
>
> def lastdetecter(iterable):
>     t, lookahead = tee(iterable)
>     lookahead.next()
>     return izip(chain(imap(itemgetter(0), izip(repeat(False),
> lookahead)), repeat(True)), t)

def lastdetector(iterable):
    t, u = tee(iterable)
    return izip(chain(imap(lambda x: False, islice(u, 1, None)),
        [True]), t)

--
Paul Hankin



From mensanator at aol.com  Tue Oct  9 00:55:20 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Mon, 08 Oct 2007 21:55:20 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.2.1191893235.916.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
	<1191891827.863258.23620@y42g2000hsy.googlegroups.com>
	<mailman.2.1191893235.916.python-list@python.org>
Message-ID: <1191905720.039648.30620@19g2000hsx.googlegroups.com>

On Oct 8, 8:27?pm, "Nicholas Bastin" <nick.bas... at gmail.com> wrote:
> On 10/8/07, mensana... at aol.com <mensana... at aol.com> wrote:
>
> > > What do you mean by "the military" and why do you think they're
> > > authoritative on the topic of timezones?
>
> > Because they publish maps?
>
> I'm not sure what this has to do with it.

Maybe you've never had to navigate?

>
> > > but as far as I know they don't define timezones.
>
> > Ok, maybe they don't define them. But they get them from somewhere
> > and the zones are labeled A-Z (don't ask which letter isn't used).
> > Zone Z is equivalent to GMT and the time is refered to as Zulu time.
>
> They get them from NATO.  NGO's outside of NATO do not use NATO time
> zones for describing time data, mostly because NATO doesn't care about
> daylight savings time.  Works fine for the military, but not so well
> for your civilian users.
>
> > That's 25 zones, not 400. Under that system there are no half-hour
> > offset zones, no zones based on sunset and no lunatic GMT+13 zones.
>
> Yes, but lucky for us, we live in the real world, so we have to deal
> with 400 time zones.  The reality is that people LIVE in those
> 'lunatic' time zones, and software needs to address that.

WHY must we accomodate the ignorant? Why not cut them off
from the Internet until they get their act together? Don't
people get mad at Microsoft for breaking standards? People like
you are to blame for accomodating broken standards. "Oh, no,
we can't afford to lose those three potential customers who
live on an island in Kiribati!"

>
> If I schedule a meeting with someone in Indiana, and I'm in Ohio,
> they're in the same military time zone, but they don't observe
> daylight savings time, so in fact our times are different.  Users
> probably want our applications to handle these problems.

Isn't that what they call a "locale"?

>
> > > Since timezones (obviously)
> > > contain more information than just the GMT offset
>
> > Of course. But the GMT offset could be used to filter his list
> > of 400 choices, couldn't it?
>
> Sortof.  First, your user has to understand what GMT is,

And you start that education by learning the 25 timezones.
Then when you understand that, you can then learn about locales.

> so that's
> already going to cause problems.   Secondly, you need to handle time
> zones which drift from different GMT offsets depending on the time of
> year.  

It helps to know what you're drifting from.

> At the very least your algorithm needs to be greedy.

How good an algorithm do you think the OP will come up
with if he doesn't understand why his list has 400 items
or has any clue how to reduce it?

>
> > Agreed. But if someone gave me a list of 400 choices, I would look
> > for some way to reduce the list to a manageable choice. Isn't that
> > what the OP wants?
>
> > Why not teach him the truth, starting from the top level? Shouldn't
> > you teach him to fish rather than just give him one?
>
> Because the truth is that there are upwards of 400 different time
> zones,

Locales.

> accounting for local custom and law.  The military can
> conveniently ignore that, but we as application writers cannot.

But you can safely ignore the basis of the 400 locales?

>
> There is no central authority which defines global time zones.  The
> functional definition of a time zone is merely a geographical area of
> the earth that has adopted the same local time rules.

So, you can live your life with functional definations,
never bothering to learn any theory? Is code monkey all you
aspire to?

>
> --
> Nick




From schmidt_florian at gmx.de  Mon Oct  1 15:30:22 2007
From: schmidt_florian at gmx.de (Florian Schmidt)
Date: Mon, 1 Oct 2007 21:30:22 +0200
Subject: image python
In-Reply-To: <1191262869.523524.180400@y42g2000hsy.googlegroups.com>
References: <1191262869.523524.180400@y42g2000hsy.googlegroups.com>
Message-ID: <20071001193021.GA4002@localdomain>

On Mon, Oct 01, 2007 at 11:21:09AM -0700, oruccim at gmail.com wrote:
> hi
> I want understanding pictures colorfull
> for examle colorfull or black-white
> image.google.com there are understand it.

i'm not sure if i understand your question. assuming you want to decide if
an image has only grayscale or multi-channel color data you could use
the python image library
	http://www.pythonware.com/products/pil/

example:
>>> from PIL import Image
>>> im = Image.open("gray.png")
>>> im.mode
'L'
>>> im = Image.open("color.jpeg")
>>> im.mode
'RGB'
>>> im = Image.open("another_gray.jpeg")
>>> im.mode
'L'

but this doesn't tell you if color.jpeg really uses non-gray colors...

if you really want to do an expensive search, if an RGB image contains
only gray colors, you could do something like that:
>>> im = Image.open("color.jpeg")
>>> im.mode
'RGB'

im.getcolors() returns a list like [(color_count, (red, green, blue)),
...]

to only select the channel values one could do:
>>> colors = set(lambda cv: cv[1], im.getcolors())

lets define a gray color as a color with all three color channels having the
same value like (30, 30, 30). to detect if a sequence has only equal items
one could create a set of this sequence and see how many items the set
contains afterwards:
>>> set((30, 30, 30))
set([30])
>> len(set((30, 30, 30)))
1

to check if an rgb image uses only grayscale colors we can do
>>> map(lambda cv: len(set(cv[1])), im.getcolors())
[1, 1, 1, 1, ....
the returned list contain only 1's if there are only gray values in the
image.

to easyly show this we can again create a set from this list:
>>> set(map(lambda cv: len(set(cv[1])), im.getcolors()))
set([1])

so "im" is an grayscale image even though it has three channels.

this method does not always work:
- with indexed image data,
- with another definition/understanding of "gray" pixels

but maybe PIL can help you anyway!

flo.

-- 
Florian Schmidt	// www.fastflo.de


From steve at holdenweb.com  Thu Oct  4 06:08:35 2007
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 04 Oct 2007 06:08:35 -0400
Subject: Convert on uppercase unaccentent unicode character
In-Reply-To: <4704a38c$0$2769$426a74cc@news.free.fr>
References: <4703dfff$0$30966$426a74cc@news.free.fr>	<1191439792.666146.217150@d55g2000hsg.googlegroups.com>	<Xns99BED1C4FA1CFduncanbooth@127.0.0.1>	<mailman.1483.1191444874.2658.python-list@python.org>
	<4704a38c$0$2769$426a74cc@news.free.fr>
Message-ID: <fe2e2v$63f$1@sea.gmane.org>

JBJ wrote:
> Steve Holden wrote:
> 
>> Duncan Booth wrote:
>>> timaranz at gmail.com wrote:
>>>
>>>> On Oct 4, 7:35 am, JBJ <Jean-Bernard.jacquet-at-tele-deux-
>>>> point... at invalid.org> wrote:
>>>>> Hi,
>>>>> I'am very newbie in Python.
>>>>> For the moment I'am trying to convert an unicode character to his
>>>>> uppercase unaccented character.
>>>>> By example with locale fr_FR:
>>>>> a,A,?,? should return A
>>>>> o,O,?,? should return O
>>>>> ?,? should return ?
>>>>> i,I,?,? should return I
>>>>>
>>>>> Have you some suggestions ?
>>>>>
>>>>> Thank.
>>>> Unicode strings have an upper() method - try that.  I'm think it
>>>> should work properly with your locale - it doesn't give the expected
>>>> result for me with an english locale.
>>>>
>>> No, that will uppercase the string, but it doesn't (and shouldn't) strip
>>> the accents:
>>>
>> I can agree that is doesn't (though I am taking your word for it), but a
>> French person will definitely feel it's doing the wrong thing. Upper
>> case letters aren't accented in written French.
>>
>> regards
>>   Steve
> http://www.academie-francaise.fr/langue/questions.html#accentuation

Malheureusement, I see that absence of accented capitals is a modern 
phenomenon that is regarded as an impediment to the language mostly 
stemming from laziness of individual authors and inadequacy of low-end 
typesetting software. I hadn't realised I was so up-to-date ;-)

So I will have to stop propagating this misinformation.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC/Ltd           http://www.holdenweb.com
Skype: holdenweb      http://del.icio.us/steve.holden

Sorry, the dog ate my .sigline so I couldn't cat it



From phil at freehackers.org  Fri Oct 19 06:00:28 2007
From: phil at freehackers.org (BlueBird)
Date: Fri, 19 Oct 2007 03:00:28 -0700
Subject: Is there a way to tell if a script has been run by Pythonw.exe
	instead of Python.exe?
In-Reply-To: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
References: <1192744576.899687.93650@k35g2000prh.googlegroups.com>
Message-ID: <1192788028.503824.52800@i13g2000prf.googlegroups.com>

On Oct 18, 11:56 pm, Metalone <j... at iteris.com> wrote:
> In particular I want to know how to tell if reading and writing to the
> console can occur.
> Something like
> sys.isConsolePresent()

For a different problem, I have the following code. It might help:

def isrealfile(file):
	"""
	Test if file is on the os filesystem. This is necessary on windows,
when
        starting python with pythonw.exe because in that case, the
stdout and stderr
	are not real file and will create IOError when being flushed or when
more
	than 4096 bytes are written.
	"""
	if not hasattr(file, 'fileno'): return False
	try: tmp = os.dup(file.fileno())
	except: return False
	else: os.close(tmp); return True

class NullStream:
    """
    A file like class that writes nothing
    """
    def close(self): pass
    def flush(self): pass
    def write(self, str): pass
    def writelines(self, sequence): pass

if not isrealfile(sys.stdout):
   sys.stdout = NullStream()

if not isrealfile(sys.stderr):
   sys.stderr = NullStream()




From wbrehaut at mcsnet.ca  Wed Oct 17 12:08:24 2007
From: wbrehaut at mcsnet.ca (Wayne Brehaut)
Date: Wed, 17 Oct 2007 10:08:24 -0600
Subject: linear programming in Python
References: <1192635868.971584.7000@k35g2000prh.googlegroups.com>
Message-ID: <cfcch3pb40h0gfpsfrs2h2kbo2id6a8arh@4ax.com>

Hi Jorge,

On Wed, 17 Oct 2007 08:44:28 -0700, jivelasquezt at gmail.com wrote:

>Hi all,
>
>I'm new to this group so I don't know if this question has been posted
>before, but does anyone knows about linear/integer programming
>routines in Python that are available on the web, more specifically of
>the branch and bound method.

Try using your favourite search engine with a search string like
"linear programming Python branch bound".  Using Alta Vista
(http://www.altavista.com/web/adv) I got:

	AltaVista found 16,500 results  

and Google gave:

	Results 1 - 10 of about 7,990 

Some on the first page of each look like good possibilities, and I'm
sure there are others in the group that have first-hand experience and
can offer comparisons and advice. You might also try searching the
archives of this group--I searched just what my server has still
available and got no hits on "linear programming", but didn't try just
"LP" or similar.

Good luck!
Wayne

>Thanks,
>
>Jorge Velasquez
>PhD Student, Department of Ecology and Evolution at Stony Brook



From python.list at tim.thechases.com  Mon Oct 22 21:46:32 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 22 Oct 2007 20:46:32 -0500
Subject: Iteration for Factorials
In-Reply-To: <1193095229.784364.94700@i13g2000prf.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>	<Xns99D18CCFC2430duncanbooth@127.0.0.1>	<1193075845.148527.80820@k35g2000prh.googlegroups.com>	<87bqarov3n.fsf@rudin.co.uk>	<1193080349.610343.95430@v23g2000prn.googlegroups.com>	<250fcec00710221238g76f24cb8n158e8854c45d7a61@mail.gmail.com>	<mailman.344.1193084287.13605.python-list@python.org>	<1193089836.219692.117420@q5g2000prf.googlegroups.com>	<mailman.349.1193092818.13605.python-list@python.org>
	<1193095229.784364.94700@i13g2000prf.googlegroups.com>
Message-ID: <471D5278.1030106@tim.thechases.com>

> Still, why do you want None instead of raisng an exception
> (as is the case in other factorial implementations)?

A null value is as good/bad as raising an exception in my book.
Since you can't do math on a None object, any attempt to do so
will raise an exception:

  >>> 42 + fact(-1)

I generally prefer my functions to return semi-sensible results
(in this case, None makes sense to me, as there isn't really a
definition of "negative-one factorial").  It also fits in my head
alongside my SQL where NULL values/expressions can be returned
and evaluated without the whole query falling over.

I suppose if you really wanted to throw an exception using this
lambda craziness, you could wrap the whole result in "0 +
([body])" which, if the body returned Null, would push up
exception daisies (with slightly misleading exception information).

-tkc






From ward.david at comcast.net  Thu Oct  4 13:15:59 2007
From: ward.david at comcast.net (ward.david at comcast.net)
Date: Thu, 04 Oct 2007 10:15:59 -0700
Subject: Import PY file not included in py2exe executable
Message-ID: <1191518159.408503.258070@19g2000hsx.googlegroups.com>

I am using py2exe to generate an executable so that I can deliver my
scripts as a EXE. I have a couple of file that are needed by the
program that I do not want to include in the EXE because they are used
for program configuration (similar to the way an INI file is used.)
These file may change per installation, so I may need to edit them.
Having them wrapped up in the EXE just won't work for my needs.

I've used the 'exclude' option to keep them from being included in the
EXE. I'm also using 'zipfile=None' so that all of the other pys are
included in the EXE. So, when I deliver the EXE all I should have in
my installation directory is:

MyProgram.exe
config1.py
config2.py
<misc Python pyds>

Is this possible? What is the setup.py configuration for this?



From charles.fox at gmail.com  Tue Oct 30 10:11:49 2007
From: charles.fox at gmail.com (Charles Fox)
Date: Tue, 30 Oct 2007 07:11:49 -0700
Subject: Hide comments in emacs python mode?
Message-ID: <1193753509.752259.126130@22g2000hsm.googlegroups.com>

Hi guys,

I'm playing with Python in emacs, with python mode.

I'd like to be able to press a key to toggle the code comments on and
off -- to switch between beautiful clean Python code, and the full
text that tells me what's going in in English.

Is this currently possible?  I know there is a hide/show mode in
emacs, it would need to be set to hide (1) whole lines that start with
#, (2) parts of lines after the '#' for comments after code.  Has
anyone already written this?



From bearophileHUGS at lycos.com  Sun Oct 28 07:51:51 2007
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: Sun, 28 Oct 2007 04:51:51 -0700
Subject: simple question on dictionary usage
In-Reply-To: <5ogqvnFmgu6mU2@mid.uni-berlin.de>
References: <ffuerv$12ih$1@stationair.kjsl.com>
	<472327af$0$31482$426a74cc@news.free.fr>
	<1193487810.194444.277900@o38g2000hse.googlegroups.com>
	<5ogqvnFmgu6mU2@mid.uni-berlin.de>
Message-ID: <1193572311.363399.64510@k79g2000hse.googlegroups.com>

Marc 'BlackJack' Rintsch>``s.startswith('E')`` is a little safer than
``s[0] == 'E'`` as the former returns `False` if `s` is empty while
the latter raises an `IndexError`.<

Thank you.
In this problem if there is an empty key in the record dict then maybe
it's better to raise an IndexError, because probably that's not a
normal condition. Sometimes less safe is more safe :-)

With few tests I have seen that (using Psyco) this is probably the
faster solution (and it's quite readable by a newbe too):

record2 = {}
for k in record:
  if k[0] == 'E':
    record2[k] = record[k]

Misteriously with Psyco it becomes faster than even the equivalent D
language solution (keys starting with "E" are about 5% of the total)
that is statically typed and generally very fast:

string[string] record2;
foreach(k, v; record)
  if (k[0] == 'E')
    record2[k] = v;

Bye,
bearophile



From mdipierro at cs.depaul.edu  Tue Oct  9 23:57:26 2007
From: mdipierro at cs.depaul.edu (mdipierro at cs.depaul.edu)
Date: Wed, 10 Oct 2007 03:57:26 -0000
Subject: Yet another comparison of Python Web Frameworks
In-Reply-To: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
Message-ID: <1191988646.640498.278860@19g2000hsx.googlegroups.com>

Since you are starting a new project you may want to look into
something new and different

http://mdp.cti.depaul.edu/examples




From mrstephengross at hotmail.com  Wed Oct 24 11:09:02 2007
From: mrstephengross at hotmail.com (mrstephengross)
Date: Wed, 24 Oct 2007 15:09:02 -0000
Subject: How to find out which functions exist?
In-Reply-To: <5o7bp5Fld8c9U12@mid.uni-berlin.de>
References: <1193173804.937071.278110@e9g2000prf.googlegroups.com>
	<5o76tgFld8c9U10@mid.uni-berlin.de>
	<1193176280.003067.269950@i13g2000prf.googlegroups.com>
	<5o7bp5Fld8c9U12@mid.uni-berlin.de>
Message-ID: <1193238542.066171.187950@q3g2000prf.googlegroups.com>

> import module
> from inspect import getmembers, isclass
> classes = getmembers(module, isclass)

Ok, this makes sense. How can I do it inside the .py file I'm working
on? That is, consider this:

  class A:
    pass
  class B:
    pass
  import inspect
  print inspect.getmembers(<this file>, inspect.isclass) # how can I
express <this file> ?

Thanks again,
--Steve



From thermostat at gmail.com  Fri Oct 26 12:46:46 2007
From: thermostat at gmail.com (Dan)
Date: Fri, 26 Oct 2007 16:46:46 -0000
Subject: renice
In-Reply-To: <mailman.470.1193387423.13605.python-list@python.org>
References: <mailman.470.1193387423.13605.python-list@python.org>
Message-ID: <1193417206.734440.268840@o38g2000hse.googlegroups.com>

On Oct 26, 4:30 am, mokhtar <mbmessa... at yahoo.com> wrote:
> Hi
>
> Is it possible to renice the python process executing the current python
> script ?:confused:
> --
> View this message in context:http://www.nabble.com/renice-tf4695834.html#a13422771
> Sent from the Python - python-list mailing list archive at Nabble.com.

On UNIX:
>>> import os
>>> os.system("renice -n %d %d" % ( new_nice, os.getpid() ) )
(untested)

I don't know if windows has the concept of renice...

-Dan



From larry.bates at websafe.com  Wed Oct 31 18:10:50 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 31 Oct 2007 17:10:50 -0500
Subject: a few questions.
In-Reply-To: <mailman.710.1193866047.13605.python-list@python.org>
References: <mailman.710.1193866047.13605.python-list@python.org>
Message-ID: <kbWdnWteLYD4YLXanZ2dnUVZ_sudnZ2d@comcast.com>

Shawn Minisall wrote:
> 1.  whats the best way to round a result to 4 decimal places?
> 
> I tried round, but then read that it only works with exponents of 10.
> 
> I'm trying to do it on this piece of code.
> 
> time = (distance / 4900)
> 
> 2. What direction would I go in if I'm getting 5 inputs from the user 
> and want to make a bar table out of them where a * represents a 100 of 
> the total number?
> 
> For example,
> 
> Store 1: * *
> 
> Store 2: *
> 
> Store 3: * * *
> 
> ect,
> 
> I already know I'm going to be expecting to use a for loop (0,4) since 
> there are 5 inputs, but how to get from say, 200 to the output of * * 
> I'm a little lost.
> 
> thx
> 
> 
> 

Q:1

 >>> round(123.45678, 4)
123.4568

Q2:

Something like this works:

stores=[]
for i in xrange(0,5):
      x=raw_input("input number for store=%i ?" % i)
      stores.append(int(x))

for i in xrange(0,5):
      hundreds, remainder=divmod(stores[i], 100)
      print "Store: %i %s" % (i+1, hundreds*"*")


-Larry


From horpner at yahoo.com  Wed Oct 24 09:13:54 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 24 Oct 2007 13:13:54 GMT
Subject: Better writing in python
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <slrnfhuhcg.n4.horpner@FIAD06.norwich.edu>

On 2007-10-24, Alexandre Badez <alexandre.badez at gmail.com> wrote:
> I'm just wondering, if I could write a in a "better" way this
> code
>
> lMandatory = []
> lOptional = []
> for arg in cls.dArguments:
>   if arg is True:
>     lMandatory.append(arg)
>   else:
>     lOptional.append(arg)
> return (lMandatory, lOptional)
>
> I think there is a better way, but I can't see how...

I don't think there's much improvement to be made. What are your
particular concerns? Is it too slow? Too verbose? Does it not
work correctly?

It appears to be an application of itertools.groupby, but that'll
almost certainly be less efficient. To use groupby, you have to
sort by your predicate, and build lists to save results. Your for
loop avoids the sorting.

Here's some instrumentality for ya:

from itertools import groupby
from operator import truth
from collections import defaultdict

result = defaultdict(list)
for k, g in groupby(sorted(cls.dArguments, key=truth), truth):
  result[k].extend(g)

I like your initial attempt better.

P.S. I didn't realize until working out this example that extend
could consume an iterator.

-- 
Neil Cerutti
The word "genius" isn't applicable in football. A genius is a guy like Norman
Einstein. --Joe Theisman


From arkanes at gmail.com  Thu Oct  4 15:13:03 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 4 Oct 2007 14:13:03 -0500
Subject: unit testing
In-Reply-To: <fe3dcd$8s2$1@solaris.cc.vt.edu>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
Message-ID: <4866bea60710041213r107603d9mab7c15ce2895a97e@mail.gmail.com>

On 10/4/07, brad <byte8bits at gmail.com> wrote:
> Does anyone else feel that unittesting is too much work? Not in general,
> just the official unittest module for small to medium sized projects?
>
> It seems easier to write some quick methods that are used when needed
> rather than building a program with integrated unittesting. I see the
> value of it (the official unittest that is)... especially when there's a
> lot of source code. But this...
>
> if len(x) != y:
>     sys.exit('...')
>
> is a hell of a lot easier and quicker that subclassing unittest.TestCase
> on small projects :)
>
> Do others do their own "informal" unit testing?
>


Doctest is commonly given as the alternative to people who feel this
way. Personally, I find that anything worth testing is worth having a
test directory and independent unit tests for.


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 17 08:27:50 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 17 Oct 2007 12:27:50 -0000
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
Message-ID: <13hbvu6oc742l02@corp.supernews.com>

On Wed, 17 Oct 2007 13:41:06 +0200, Hrvoje Niksic wrote:

> The current implementation of += uses __add__ for addition and __iadd__
> for addition that may or may not be in-place.  I'd like to know the
> rationale for that design.

Everything you need is in the PEP:

http://www.python.org/dev/peps/pep-0203/



-- 
Steven.


From kw at codebykevin.com  Sat Oct 13 09:27:40 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Sat, 13 Oct 2007 09:27:40 -0400
Subject: Cross-platform GUI development
In-Reply-To: <mailman.165.1192269333.927.python-list@python.org>
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>	<mailman.159.1192260728.927.python-list@python.org>	<as0Qi.8294$UN.1208@newsfe24.lga>
	<mailman.165.1192269333.927.python-list@python.org>
Message-ID: <4710C7CC.3010806@codebykevin.com>

David Tremouilles wrote:
> No issue with pygtk on mac!
> Actually I develop on this platform everyday. Macport take care of the
> installation for me http://www.macports.org/ (Fink should do the work
> too).
> Of course native GTK on OSX could be nice but definitely not needed at
> this point in time.

"Native" Gtk on the Mac still isn't really native. I tried a "native" 
build of Wireshark and was very disappointed. Yes, it uses Quartz/Aqua 
instead of X to draw Windows, but it completely ignores other Aqua 
interface conventions--the menu is still attached to each window instead 
of at the top of the screen, buttons aren't Aqua buttons, and so on. 
Based on what I've seen, I don't think Gtk is really viable as a native 
Mac development environment; it looks as weird as Fltk, which also uses 
Aqua windowing but which also draws its own widgets and puts the menubar 
on each window.

Tk does much better; while it's not very pretty, menubars are in the 
correct place and buttons work correctly.

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From stefan.behnel-n05pAM at web.de  Thu Oct 25 06:12:00 2007
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Thu, 25 Oct 2007 12:12:00 +0200
Subject: python project ideas
In-Reply-To: <1193303762.909548.199230@50g2000hsm.googlegroups.com>
References: <1193285340.816550.188040@v29g2000prd.googlegroups.com>
	<mailman.442.1193300742.13605.python-list@python.org>
	<47205C66.6090906@web.de>
	<1193303762.909548.199230@50g2000hsm.googlegroups.com>
Message-ID: <47206BF0.1060604@web.de>

Arnaud Delobelle wrote:
> On Oct 25, 10:05 am, Stefan Behnel <stefan.behnel-n05... at web.de>
> wrote:
>> Evan Klitzke wrote:
>>> but you could also write your own templating engine for this.
>> No, please.
> 
> I'm afraid it is the inalienable right of every python programmer to
> write their own templating engine.

Oh, definitely. But there is no reason to encourage someone to do so.


> After all, it takes less time to write your own than to understand
> some of them!

Template engines are amongst the things that seem easy enough to look at the
available software and say "bah, I'll write my own in a day", but are complex
enough to keep them growing over years until they become as huge and
inaccessible as all the other implementations. Then it's time for someone else
to look at it and say "bah, I'll write my own in a day".

Stefan


From p at ulmcnett.com  Wed Oct 31 16:18:59 2007
From: p at ulmcnett.com (Paul McNett)
Date: Wed, 31 Oct 2007 13:18:59 -0700
Subject: 3 number and dot..
In-Reply-To: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
References: <1193860737.687984.13400@k79g2000hse.googlegroups.com>
Message-ID: <4728E333.8000801@ulmcnett.com>

Abandoned wrote:

> Hi..
> I want to do this:
> for examle:
> 12332321 ==> 12.332.321
> 
> How can i do?


Assuming that the dots are always in the 3rd and 7th position in the string:

def conv(s, sep="."):
   l = [s[0:3], s[3:6], s[6:]]
   return sep.join(l)

print conv("12332321")


-- 
pkm ~ http://paulmcnett.com


From paul at boddie.org.uk  Thu Oct 18 13:16:32 2007
From: paul at boddie.org.uk (Paul Boddie)
Date: Thu, 18 Oct 2007 10:16:32 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <mailman.176.1192721413.13605.python-list@python.org>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
	<1192529804.759199.76350@i13g2000prf.googlegroups.com>
	<1192639690.306271.298190@z24g2000prh.googlegroups.com>
	<1192661958.052525.163760@e34g2000pro.googlegroups.com>
	<mailman.176.1192721413.13605.python-list@python.org>
Message-ID: <1192727792.466452.68210@v29g2000prd.googlegroups.com>

On 18 Okt, 17:24, Steve Holden <st... at holdenweb.com> wrote:
> allen.fowler wrote:

[Quoting IamIan...]

> >> One CGI question - since all of my CGIs are spitting out HTML is their
> >> source code safe? wget and linking to the source deliver the output
> >> HTML. Are there any other methods of trying to steal the source CGI I
> >> need to protect against?

[...]

> > Not sure I fully understand the question.
>
> > Can you post the CGI code here?
>
> That's funny.

Yes, there's no point in employing sophisticated technical mechanisms
for security when they are all undermined by some good old-fashioned
social engineering. ;-)

> The OP's problem is that he suffers from the delusion that people want
> to steal the source code for his CGI script.

The solution being that of ensuring that the Web server settings tell
the server to always run CGI scripts and never serve up the scripts
themselves as content. Additional security, such as file permissions,
access to the server, and so on, are beyond the scope of casual Usenet
advice with the level of detail provided by the inquirer.

Paul



From duncan.booth at invalid.invalid  Thu Oct 18 04:55:27 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 18 Oct 2007 08:55:27 GMT
Subject: MOD_PYTHON + packages reloading
References: <1192694766.953529.25270@k35g2000prh.googlegroups.com>
Message-ID: <Xns99CD64546C554duncanbooth@127.0.0.1>

lukasz.f24 at gmail.com wrote:

> I came across annoying problem during my fun with mod_python. I turned
> out that mod_python load package only onca and don't care about any
> changes to it. Obviously it makes sense on production server but
> during development is more then annoying.

Have you read the mod_python manual?

http://www.modpython.org/live/current/doc-html/dir-other-par.html

5.4.8 PythonAutoReload

Syntax: PythonAutoReload {On, Off}
Default: PythonAutoReload On
Context: server config, virtual host, directory, htaccess
Override: not None
Module: mod_python.c

If set to Off, instructs mod_python not to check the modification date 
of the module file.

By default, mod_python checks the time-stamp of the file and reloads the 
module if the module's file modification date is later than the last 
import or reload. This way changed modules get automatically reimported, 
eliminating the need to restart the server for every change.

Disabling autoreload is useful in production environment where the 
modules do not change; it will save some processing time and give a 
small performance gain. 



From deets at nospam.web.de  Fri Oct 19 11:05:28 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 19 Oct 2007 17:05:28 +0200
Subject: dynamic invoke
References: <1192790367.342435.243930@v29g2000prd.googlegroups.com>
	<1192793679.102637.274620@e9g2000prf.googlegroups.com>
	<5nrkasFk00g7U1@mid.uni-berlin.de>
	<mailman.213.1192804759.13605.python-list@python.org>
Message-ID: <5nrvdoFjmq4tU1@mid.uni-berlin.de>

Sushant wrote:

> Python will not allow string to be used a function pointer. It is type
> unsafe. Best way is to convert string into function pointers manually.
> 
> if dynamicMethod == 'bar':
>     method = oFoo->bar
> else:
>     method = oFoo->default
> method()

Sorry to say so, but that answer is bogus. It's not even Python!

Jarek has already shown how to solve this problem. And type-safety-issues
have nothing to do with it at all. 

Diez


From paul.hankin at gmail.com  Tue Oct  2 17:20:38 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Tue, 02 Oct 2007 21:20:38 -0000
Subject: List Question
In-Reply-To: <fdubt1$gp$1@solaris.cc.vt.edu>
References: <fdubt1$gp$1@solaris.cc.vt.edu>
Message-ID: <1191360038.845477.170160@22g2000hsm.googlegroups.com>

On Oct 2, 10:06 pm, brad <byte8b... at gmail.com> wrote:
> How is this expressed in Python?
>
> If x is in y more than three times:
>      print x
>
> y is a Python list.

Simple and readable:
if len([a for a in y if x == a]) > 3:
    print x

Or the slightly-too-flashy version:
if sum(1 for a in y if x == a) > 3:
    print x

--
Paul Hankin



From bj_666 at gmx.net  Tue Oct 16 03:42:32 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 16 Oct 2007 07:42:32 GMT
Subject: confused on calculating date difference in days.
References: <mailman.49.1192518819.13605.python-list@python.org>
Message-ID: <5nj8b8FiilfrU3@mid.uni-berlin.de>

On Tue, 16 Oct 2007 12:33:33 +0530, krishnakant Mane wrote:

> firstly, I can't get a way to convert a string like "1/2/2005" in a
> genuan date object which is needed for calculation.

Why?  Split the string up, convert the parts to `int` and just create a
`datetime.date` object.

> now once this is done I will create a another date object with
> today = datetime.datetime.now()
> and then see the difference between this today and the string that I
> converted to date.
> now in the first place I can't recall how I can convert a string to a date.
> then now I don't know how to calculate difference in days between
> today and the string converted date.

In [421]: '1/2/2005'.split('/')
Out[421]: ['1', '2', '2005']

In [422]: map(int, '1/2/2005'.split('/'))
Out[422]: [1, 2, 2005]

In [423]: month, day, year = map(int, '1/2/2005'.split('/'))

In [424]: a = datetime.date(year, month, day)

In [425]: b = datetime.date.today() - a

In [426]: b.days
Out[426]: 1017

Maybe you should read the docs next time.  ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From gagsl-py2 at yahoo.com.ar  Mon Oct 29 20:13:04 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 29 Oct 2007 21:13:04 -0300
Subject: interesting threading result..
References: <1193674081.798831.24860@z9g2000hsf.googlegroups.com>
	<w9clal7c9atn.q1ro3zyvvbs4.dlg@40tude.net>
	<1193700400.330157.115350@y42g2000hsy.googlegroups.com>
Message-ID: <op.t0zhj2zvx6zn5v@gabriel2.softlabbsas.com.ar>

En Mon, 29 Oct 2007 20:26:40 -0300, Abandoned <besturk at gmail.com> escribi?:

> Now this is my real code and the problem  continue.
> What is the mistake?

I don't see where you define "query" so this can't be your complete code.

>
> import threading
>
>
> class GetData(threading.Thread):
>    def __init__(self, name):
>       threading.Thread.__init__(self)
>       self.name = name
>
>
>    def run(self):
>         self.data={2:3, 3:4}
>
>
> i=0
> datas={"n": [['msn']]}
> nglist=nlist={0: list()}

Here, you make nglist and nlist refer to the same object (a dictionary,  
not a list!)
To be short: nglist and nlist are the same thing

> for x in query:
>         tip=x
>         for a in datas[x]:
>                 for o in a:
>                         if len(o)>1:
>                                 current = GetData(o)
>                                 nglist[i].append(current)
>                                 current.start()

Here, you append current to nglist[i]. current is an instance of the  
GetData class, a Thread. As nglist is the same thing as nlist, nlist[i]  
contains a GetData instance too.

>         i=i+1
>
> for x in range(0,len(nglist)):
>         for jk in range(0,len(nglist[x])):
>                 jkl=nglist[x][jk]
>                 jkl.join()
>                 sonuc=jkl.data
>                 nlist[x].append(sonuc)
>
> print nlist
> {0: [<GetData(Thread-1, stopped)>, {2: 3, 3: 4}]}

It's not surprising to see here the object appended above.

I can't say how to improve/fix this because I can't see the purpose of all  
this. Could you explain what do you want to do exactly?

-- 
Gabriel Genellina



From aleax at mac.com  Thu Oct 18 09:47:54 2007
From: aleax at mac.com (Alex Martelli)
Date: Thu, 18 Oct 2007 06:47:54 -0700
Subject: Appending a list's elements to another list using a list
	comprehension
References: <1192652834.150718.205050@t8g2000prg.googlegroups.com>
	<mailman.137.1192653677.13605.python-list@python.org>
	<1192655036.279184.255720@q3g2000prf.googlegroups.com>
Message-ID: <1i6625q.c3i82c1s3d3daN%aleax@mac.com>

Debajit Adhikary <debajit1 at gmail.com> wrote:
   ...
> How does "a.extend(b)" compare with "a += b" when it comes to
> performance? Does a + b create a completely new list that it assigns
> back to a? If so, a.extend(b) would seem to be faster. How could I
> verify things like these?

That's what the timeit module is for, but make sure that the snippet
you're timing has no side effects (since it's repeatedly executed).
E.g.:

brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]'
'a=z[:];a.extend(b)'
1000000 loops, best of 3: 0.769 usec per loop
brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]' 'a=z[:];a+=b'
1000000 loops, best of 3: 0.664 usec per loop
brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]'
'a=z[:];a.extend(b)'
1000000 loops, best of 3: 0.769 usec per loop
brain:~ alex$ python -mtimeit -s'z=[1,2,3];b=[4,5,6]' 'a=z[:];a+=b'
1000000 loops, best of 3: 0.665 usec per loop
brain:~ alex$ 

The repetition of the measurements show them very steady, so now you
know that += is about 100 nanoseconds faster (on my laptop) than extend
(the reason is: it saves the tiny cost of looking up 'extend' on a; to
verify this, use much longer lists and you'll notice that while overall
times for both approaches increase, the difference between the two
approaches remains about the same for lists of any length).

But the key point to retain is: make sure that the snippet is free of
side effects, so that each of the MANY repetitions that timeit does is
repeating the SAME operation.  If we initialized a in the -s and then
just extended it in the snippet, we'd be extending a list that keeps
growing at each repetition -- a very different operation than extending
a list of a certain fixed starting length (here, serendipitously, we'd
end up measuring the same difference -- but in the general case, where
timing difference between approaches DOES depend on the sizes of the
objects involved, our measurements would instead become meaningless).

Therefore, we initialize in -s an auxiliary list, and copy it in the
snippet.  That's better than the more natural alternative:

brain:~ alex$ python -mtimeit 'a=[1,2,3];a+=[4,5,6]'
1000000 loops, best of 3: 1.01 usec per loop
brain:~ alex$ python -mtimeit 'a=[1,2,3];a.extend([4,5,6])'
1000000 loops, best of 3: 1.12 usec per loop
brain:~ alex$ python -mtimeit 'a=[1,2,3];a+=[4,5,6]'
1000000 loops, best of 3: 1.02 usec per loop
brain:~ alex$ python -mtimeit 'a=[1,2,3];a.extend([4,5,6])'
1000000 loops, best of 3: 1.12 usec per loop

as in this "more natural alternative" we're also paying each time
through the snippet the cost of building the literal lists; this
overhead (which is a lot larger than the difference we're trying to
measure!) does not DISTORT the measurement but it sure OBSCURES it to
some extend (losing us about one significant digit worth of difference
in this case).  Remember, the WORST simple operation you can do in
measurement is gauging a small number delta as the difference of two
much larger numbers X and X+delta... so, make X as small as feasible to
reduce the resulting loss of precision!-)

You can find more details on commandline use of timeit at
<http://docs.python.org/lib/node808.html> (see adjacent nodes in Python
docs for examples and details on the more advanced use of timeit inside
your own code) but I hope these indications may be of help anyway.


Alex


From akraemer at sbcglobal.net  Thu Oct 11 18:40:35 2007
From: akraemer at sbcglobal.net (Andreas Kraemer)
Date: Thu, 11 Oct 2007 22:40:35 -0000
Subject: storing meta data on dictionary keys
In-Reply-To: <mailman.111.1192136020.927.python-list@python.org>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
	<mailman.66.1192075270.927.python-list@python.org>
	<1192084587.386653.325480@22g2000hsm.googlegroups.com>
	<mailman.97.1192123085.927.python-list@python.org>
	<1192130749.719935.147650@57g2000hsv.googlegroups.com>
	<mailman.111.1192136020.927.python-list@python.org>
Message-ID: <1192142435.963852.326300@v23g2000prn.googlegroups.com>

On Oct 11, 1:42 pm, Erik Jones <e... at myemma.com> wrote:
> On Oct 11, 2007, at 2:25 PM, Andreas Kraemer wrote:
>
> > On Oct 11, 10:17 am, Erik Jones <e... at myemma.com> wrote:
>
> >> No, duck typing and inheritance are two different things.  Duck
> >> typing is when you implement the same operations as another object or
> >> class, whereas with inheritance you get the same implementation as
> >> that of the parent class.
>
> > Except when you override a method ...
>
> Right.  But, that's specialization which is still part of the
> inheritance model, and not duck typing, since you're also inheriting
> state.  Duck typing is about implementing an interface and has
> nothing to do with state.  Put another way, with inheritance you're
> getting both behaviour and state, with duck typing you're mimicking
> behaviour.
>
>
>
> >> With duck typing, an object "acts like"
> >> another object in specific contexts.
>
> > That's exactly what Str(str) does in the context dictionary look-
> > up ...
>
> No, in that case Str "is-a" str, it doesn't have to act like a str
> because it is one, whereas with my Node example, Node "acts-like" a
> str (or int or any other hashable).  Read the first sentence of the
> Wikipedia article on duck typing:http://en.wikipedia.org/wiki/
> Duck_typing
>
> >> With inheritance, an object is
> >> the same general type as another object.  You don't want string
> >> objects, you want objects that, in a specific case, act like strings
> >> but in others, I'm sure, not.  How does a concept like string
> >> substitution fit with your inherited objects?
>
> > Since Str(str) inherits all methods of str, those methods that return
> > other strings (always new objects since str is immutable) like e.g.
> > replace() will return str and not Str(str), and don't have the meta
> > data copied. Which may be a bug or a feature  ...:-)
>
> > I think the subtle difference here lies between the definition of
> > inheritance and duck-typing, and how both are typically used in
> > practice ...
>
> Right, here you're wanting to implement your Node as a specialization
> of str in order to get only some of it's behaviour.  But the
> abstractions of a graph node and string don't mix with some of str's
> other behaviour.  To me this is obtuse:
>
>  >>> class Node(str): pass
> ...
>  >>> n = Node('funky %s')
>  >>> n.children = [Node('child1'), Node('child2')]
>  >>> print n % 'yes
> funky yes
>
> Duck typing is what you're looking for and is specifically not
> inheritance.
>
> I'd like to note that my entire argument has been based on the
> semantics of inheritance v. duck typing.  I'm not saying what you're
> doing won't work, just that when I see someone inherit from str I
> expect a str-like object in intention, it being hashable should be
> incidental to that.  This example is sufficiently small and simple
> that if you do choose inheritance you're not likely to get bitten.
> But, once you get in the habit of breaking abstractions like this you
> open yourself up for a world of hurt in other scenarios.
>
> Another thing to think about is that the only thing you have to gain
> with piggy backing str like this is saving three lines of typing, 4
> lines to implement __hash__ and __eq__ v. 1 line to inherit from str.

I get your point. And you are right, I certainly won't use this
technique for anything larger than in this example. As I mentioned in
my OP, I was using the networkx graph package (BTW an excellent
library IMHO, https://networkx.lanl.gov/wiki), and in most cases it is
sufficient (as in the examples on the web site) that nodes *are* just
simple strings or integers. Networkx is about the graph (i.e.
relationships between nodes) and does not use any "internal" node
information except for their identity as defined by __hash__ and
__eq__. That's from where I started ....

Andreas



From no-spam at not-existing.invalid  Thu Oct 25 17:19:06 2007
From: no-spam at not-existing.invalid (robert)
Date: Thu, 25 Oct 2007 23:19:06 +0200
Subject: "sem_post: Invalid argument"
In-Reply-To: <1193342663.607436.219500@57g2000hsv.googlegroups.com>
References: <ffqse9$ci8$1@news.albasani.net>
	<1193342663.607436.219500@57g2000hsv.googlegroups.com>
Message-ID: <ffr18e$n10$1@news.albasani.net>

Jonathan Gardner wrote:
> On Oct 25, 12:56 pm, robert <no-s... at not-existing.invalid> wrote:
>> On a server the binary (red hat) installed python2.4 and also a
>> fresh compiled python2.5 spits "sem_post: Invalid argument".
>> What is this and how can this solved?
>> ...
>> Python 2.4.3 (#1, Jun  6 2006, 21:10:41)
>> [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-54)] on linux2
>> ...
>> server [~]# uname -a
>> Linux server 2.4.34.1-p4-smp-bigmem-JWH #1 SMP Mon Mar 19 03:26:57
>> JST 2007 i686 i686 i386 GNU/Linux
> 
> Are you sure you have compatible binaries? Or did you install a random
> RPM without checking for dependencies?
> 

Should be compatible - but I am not sure if the kernel was 
recompiled on this machine. And at least the fresh ./configure'ed 
and compiled py2.5, which yields the same problem, should be 
maximum compatible. Maybe because this machine is a "smp-bigmem" ..

Robert


From JKPeck at gmail.com  Sun Oct 21 22:41:17 2007
From: JKPeck at gmail.com (JKPeck)
Date: Mon, 22 Oct 2007 02:41:17 -0000
Subject: Wrapping stdout in a codec
Message-ID: <1193020877.138550.53890@z24g2000prh.googlegroups.com>

We want to wrap the stdout device in a codec in order to decode output
transparently according to a particular code page (which might not be
the system code page).  However, codec.open requires a filename, and
stdout may be a tty or otherwise anonymous.  How can we accomplish
this wrapping?  Our application may be loaded into a Python program
that has already set up stdout.

TIA,
Jon Peck



From paul.hankin at gmail.com  Mon Oct 15 18:32:45 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Mon, 15 Oct 2007 22:32:45 -0000
Subject: Simple Text Processing Help
In-Reply-To: <1192482484.987399.112620@k35g2000prh.googlegroups.com>
References: <1192369731.561036.31010@i38g2000prf.googlegroups.com>
	<1192396632.736910.134070@q5g2000prf.googlegroups.com>
	<1192445236.310797.91160@z24g2000prh.googlegroups.com>
	<fevlma$imh$01$2@news.t-online.com>
	<1192482484.987399.112620@k35g2000prh.googlegroups.com>
Message-ID: <1192487565.485268.110450@t8g2000prg.googlegroups.com>

On Oct 15, 10:08 pm, patrick.wa... at gmail.com wrote:
> Because of my limited Python knowledge, I will need to try to figure
> out exactly how they work for future text manipulation and for my own
> knowledge.  Could you recommend some resources for this kind of text
> manipulation?  Also, I conceptually get it, but would you mind walking
> me through
>
> > for tok in tokens:
> >         if NR_RE.match(tok) and len(chem) >= 4:
> >             chem[2:-1] = [' '.join(chem[2:-1])]
> >             yield chem
> >             chem = []
> >         chem.append(tok)

Sure: 'chem' is a list of all the data associated with one chemical.
When a token (tok) arrives that is matched by NR_RE (ie 3 lots of
digits separated by dots), it's assumed that this is the start of a
new chemical if we've already got 4 pieces of data. Then, we join the
name back up (as was explained in earlier posts), and 'yield chem'
yields up the chemical so far; and a new chemical is started (by
emptying the list). Whatever tok is, it's added to the end of the
current chemical data. Add some print statements in to watch it work
if you can't get it.

This code uses exactly the same algorithm as Marc's code - it's just a
bit clearer (or at least, I thought so). Oh, and it returns a list
rather than a tuple, but that makes no difference.

--
Paul Hankin



From michele.simionato at gmail.com  Sun Oct 14 04:46:58 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sun, 14 Oct 2007 08:46:58 -0000
Subject: Paste and WSGI 2.0 [WAS: Yet another comparison of Python Web
	Frameworks]
In-Reply-To: <1192323138.960870.251160@i13g2000prf.googlegroups.com>
References: <1191659602.789748.59150@g4g2000hsf.googlegroups.com>
	<470789c2$0$28579$426a74cc@news.free.fr>
	<1192323138.960870.251160@i13g2000prf.googlegroups.com>
Message-ID: <1192351618.434893.166310@e9g2000prf.googlegroups.com>

On Oct 14, 2:52 am, Ian Bicking <i... at colorstudy.com> wrote:
> That said, going without a framework (which at least in his article is
> what Michele seems to be comparing Pylons against) isn't always so
> bad.  I started writing an Atompub server in Pylons, but felt like I
> was spending too much time navigating around what the framework setup
> and not enough time just paying attention to what Atompub really is.
> So I ended up writing it (as FlatAtomPub), effectively without a
> framework (though developing it at the same time as WebOb, so I leaned
> on that quite a bit).  The development went quite well, and for a web
> service like Atompub that's probably what I'd recommend (at least to
> experienced developers -- you might find yourself left to drift
> otherwise without a clear idea of where to start).
>
> But for writing a traditional web application, I'd still use Pylons.
> The choices Pylons have made are with that in mind, and it doesn't at
> all exclude other forms of development in the process.  You could
> actually drop a FlatAtomPub instance right into a Pylons app, for
> instance.  Pylons is a small enough framework that it really is quite
> reasonable to pick and choose and use a very minimal style with it.

I think we do agree entirely, it is just that the application we have
in
mind is more a collection of web services than a traditional Web
application.
Now, since you are here, there is an unrelated question that I want to
ask you, concerning the future of Paste with respect to WSGI 2.0.
I do realize that at this stage WSGI 2.0, is only a draft, still I
would
like to know:

1. if you think that WSGI 2.0 is good idea (I expect you will say
"yes")
2. if you plan to support it in Paste and if yes when (I mean, in a
month,
   in a year, in three years?)
3. if you already have thought of a migration plan and, in that case,
   what your strategy would likely be.

Thanks for sharing,



      Michele Simionato



From grante at visi.com  Fri Oct 12 11:44:51 2007
From: grante at visi.com (Grant Edwards)
Date: Fri, 12 Oct 2007 15:44:51 -0000
Subject: Cross-platform GUI development
References: <1192176809.756259.316980@v29g2000prd.googlegroups.com>
	<1192178193.734126.253610@z24g2000prh.googlegroups.com>
Message-ID: <13gv5jj9u5hege8@corp.supernews.com>

On 2007-10-12, Alexandre Badez <alexandre.badez at gmail.com> wrote:

> Personnaly, I use PyQt simply because I prefere Qt to Gtk,
> witch is much more integrated with all desktop than Gtk.

So you're claiming Qt is much more integrated with Gnome than
Gtk? The mind wobbles.  The Gnome and XFCE desktops are _built_
using Gtk.  A machine running a Gnome or XFCE desktop doesn't
even need to have Qt installed.  The same can be said for
various other deskops (openstep, equinox, etc. -- most of them
other than KDE, actually).

> In fact, your application in Qt on Mac, Win or Linux look like
> a native app.

Qt sure doesn't look native on my Linux machines, and it's not
going to look native on any GTK-based desktops such an Gnome or
XFCE.  Qt will only look native on Linux machines running a Qt
based desktop such as KDE.

> Just a question of "feeling" I think; because most of those
> GUI framework, offer quiet the same functionality.

I use wxPython, because it uses Gtk on Linux, and Gtk is
"native" for both me and for my Windows users.

-- 
Grant Edwards                   grante             Yow! My Aunt MAUREEN was a
                                  at               military advisor to IKE &
                               visi.com            TINA TURNER!!


From steve at REMOVE-THIS-cybersource.com.au  Wed Oct 10 11:18:56 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Wed, 10 Oct 2007 15:18:56 -0000
Subject: Singleton
References: <1192009016.858568.58430@50g2000hsm.googlegroups.com>
	<13gplgh75hot354@corp.supernews.com>
	<1192024635.416697.210620@o3g2000hsb.googlegroups.com>
Message-ID: <13gprb0dd0b2u33@corp.supernews.com>

On Wed, 10 Oct 2007 06:57:15 -0700, Carl Banks wrote:

> On Oct 10, 9:39 am, Steven D'Aprano <st... at REMOVE-THIS-
> cybersource.com.au> wrote:
>> On Wed, 10 Oct 2007 09:36:56 +0000, pythoncurious wrote:
>> > So how do people solve this? Is there an obvious way that I missed?
>>
>> Mostly by avoiding singletons. Why do you need only one instance?
>> Perhaps you should consider the Borg pattern instead.
>>
>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531
> 
> 
> That wouldn't help.  In the OP's case, it would create two borgs.

Two borgs, or two million, the whole point of using borgs is that it 
doesn't matter.


> Did
> anyone actually read the OP's post?  Or is this just an opportunity to
> pimp libraries and bicker about style?

Well, let's see now... the OP says:

"I've been trying to get some sort of singleton working in python, but
I struggle a bit and I thought I'd ask for advice."

If we take each word to have it's normal English meaning, then the OP is 
struggling to get a singleton working correctly in Python. The way I 
solve that problem is to deftly side-step it by not using a singleton.

("Doctor, it hurts when I do this."
"Then don't do it.")

Of course, if there is some other meaning to the OP's post, then possibly 
I've completely misunderstood it. Would you mind telling me what you've 
seen that the rest of us haven't?



-- 
Steven.


From lycka at carmen.se  Wed Oct 10 12:00:13 2007
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 10 Oct 2007 18:00:13 +0200
Subject: unit testing
In-Reply-To: <1191593565.971012.212920@22g2000hsm.googlegroups.com>
References: <fe3dcd$8s2$1@solaris.cc.vt.edu>
	<mailman.1571.1191577093.2658.python-list@python.org>
	<1191593565.971012.212920@22g2000hsm.googlegroups.com>
Message-ID: <feisud$sbh$1@wake.carmen.se>

byte8bits at gmail.com wrote:
> I maintain old code... code written a long time ago, before unittest
> was popular. Getting unittest to work on that is difficult at best.

Writing unit tests for lots of old code is not the most
funny thing you can imagine...

For situations like that, it might be much better to use
a tool like TextTest < http://texttest.carmen.se/ >.


From f.braennstroem at gmx.de  Tue Oct 23 15:48:59 2007
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Tue, 23 Oct 2007 19:48:59 +0000
Subject: open remote terminal
References: <ff5olg$oll$2@ger.gmane.org> <ff7tk0$3dj$1@ger.gmane.org>
	<ffce3b$eto$1@ger.gmane.org> <ffcj1t$rum$1@ger.gmane.org>
	<250fcec00710200600g25bdc1d7vacf15c3d4c4a45ff@mail.gmail.com>
Message-ID: <fflc2b$lb1$1@ger.gmane.org>

Hi Rafael,

Rafael Sachetto wrote:

> Take a look at this documentation:
> 
> http://pexpect.sourceforge.net/pxssh.html

thanks for the link, but it actually looks to me almost like my little
example... I somehow don't get it!? Any more hints?
Fabian

> 
>> >>>
>> >> pexpect would be the usual solution, I believe, if you could get it to
>> >> interact correctly with your virtual terminal.
>> >>
>> >>    http://pexpect.sourceforge.net/
>>
>> I actually gave it a first very simple try:
>>
>> import pexpect
>> child=pexpect.spawn('xterm')
>> child.sendline('ls')
>>
>> Unfortunately nothing happens expect the start of xterm!? Does anyone
>> have an idea, what I am doing wrong?
>> Fabian
>>
>> --
>> http://mail.python.org/mailman/listinfo/python-list
>>
> 
> 
> 



From paul at subsignal.org  Sat Oct 27 19:14:15 2007
From: paul at subsignal.org (paul)
Date: Sun, 28 Oct 2007 01:14:15 +0200
Subject: how to creating html files with python
In-Reply-To: <f81479dd0710271316l5edd0c69q8838ad24e66e68d9@mail.gmail.com>
References: <mailman.511.1193501565.13605.python-list@python.org>	<1193504578.745710.166190@k35g2000prh.googlegroups.com>
	<f81479dd0710271316l5edd0c69q8838ad24e66e68d9@mail.gmail.com>
Message-ID: <fg0go8$l2o$1@ger.gmane.org>

krishnakant Mane schrieb:
[snip]

> so instead of I doing the concatination myself, python makes it easy.
> and I will have lot of complex tables etc to do like this.
> so please help me choose one.
Did you actually looked for a template language as suggested here?
Now to make your life easier: If you like XML, use genshi. If you plan 
to generate something else than HTML, use cheetah. Use google or 
whatever search engine you prefer to find those packages.

cheers
  Paul



From adurdin at gmail.com  Wed Oct 10 09:19:58 2007
From: adurdin at gmail.com (Andrew Durdin)
Date: Wed, 10 Oct 2007 14:19:58 +0100
Subject: Unexpected behaviour with HTMLParser...
In-Reply-To: <S%SOi.92740$TR1.33185@fe06.news.easynews.com>
References: <B4SOi.86779$zh6.68829@fe10.news.easynews.com>
	<5n2avjFfh6h8U1@mid.uni-berlin.de>
	<S%SOi.92740$TR1.33185@fe06.news.easynews.com>
Message-ID: <59e9fd3a0710100619q649af5cew1b69515804802859@mail.gmail.com>

On 10/9/07, Just Another Victim of the Ambient Morality
<ihatespam at hotmail.com> wrote:
>
> "Diez B. Roggisch" <deets at nospam.web.de> wrote in message
> news:5n2avjFfh6h8U1 at mid.uni-berlin.de...
> >
> > Without code, that's hard to determine. But you are aware of e.g.
> >
> > handle_entityref(name)
> > handle_charref(ref)
> >
> > ?
>
>     Actually, I am not aware of these methods but I will certainly look into
> them!
>     I was hoping that the issue would be known or simple before I commited
> to posting code, something that is, to my chagrin, not easily done with my
> news client...

For example, here's something simple/simplistic you can do to handle
character and entity references:

from htmlentitydefs import name2codepoint

...

    def handle_charref(self, ref):
        try:
            if ref.startswith('x'):
                char = unichr(int(ref[1:], 16))
            else:
                char = unichr(int(ref))
        except (TypeError, ValueError):
            char = ' '
        # Do something with char

    def handle_entityref(self, ref):
        try:
            char = unichr(name2codepoint[ref])
        except (KeyError, ValueError):
            char = ' '
        # Do something with char


A.


From kw at codebykevin.com  Tue Oct 16 11:11:39 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Tue, 16 Oct 2007 11:11:39 -0400
Subject: Build Python 2.5 against Tk 8.5
In-Reply-To: <4714D34C.4050603@v.loewis.de>
References: <f4dd$4714bbc1$4275d90a$17685@FUSE.NET>
	<4714D34C.4050603@v.loewis.de>
Message-ID: <4714D4AB.3080103@codebykevin.com>

Martin v. L?wis wrote:
>> I'd like to experiment with Tk 8.5 (now in beta) in my Python
>> application, but Python 2.5 requires Tk 8.4.x.
> 
> Why do you say that? AFAIK, that's not the case.

It's been a while, but when I've tried to run my Tkinter app against Tk 
8.5 with a stock Python installation, I get an error message saying that 
Tk 8.4.x is required. It's probably tkinter.so that hard-codes the 
Tcl/Tk version, not Python itself--I should have been clearer on that. 
However, I still need to know what to patch...

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com


From jhmsmits at xs4all.nl  Mon Oct 22 06:54:35 2007
From: jhmsmits at xs4all.nl (Sander Smits)
Date: Mon, 22 Oct 2007 03:54:35 -0700 (PDT)
Subject: if..else stmt
In-Reply-To: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
References: <1193048673.332023.67960@y27g2000pre.googlegroups.com>
Message-ID: <13340589.post@talk.nabble.com>


Works as expected here, the 'else' part is not executed if the 'if' part is
true.

Python 2.5.1 (r251:54869, Apr 18 2007, 22:08:04) 
[GCC 4.0.1 (Apple Computer, Inc. build 5367)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> def tr():               
...     print "tr func"
...     return "Sander"
... 
>>> def fa():
...     print "fa func"
...     return "Harry"
... 
>>> s = "yes" if tr() == "Sander" else fa()
tr func
>>> s
'yes'
>>> s = "yes" if tr() == "San" else fa()
tr func
fa func
>>> s
'Harry'
>>> 

Can you show your code?


bigden007 wrote:
> 
> Hi,
> I have a if..else statement in my script. The statements all execute
> fine, but the problem is , even if the IF part of the statement is
> true, the else part executes as well. The verion of pythin i use 2.5
> Any help is appreciatiated.
> 
> Regards
> 
> Big Den.
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 
> 

-- 
View this message in context: http://www.nabble.com/if..else-stmt-tf4670106.html#a13340589
Sent from the Python - python-list mailing list archive at Nabble.com.



From no.reply at here.com  Wed Oct  3 06:07:18 2007
From: no.reply at here.com (Anonymous)
Date: Wed, 03 Oct 2007 11:07:18 +0100
Subject: interfacing Python interpreter with a VB6 frontend
Message-ID: <D8mdnaDv_83A957anZ2dneKdnZylnZ2d@bt.com>

I am trying something which appears (so far), that many other people 
have not yet tried before - since I can't find any useful related 
material despite several days of searching various sites/blogs etc.

I want to use VB6 as a front end for building a small GUI console that 
accepts python commands at the command line and executes them, returning 
any results to the VB6 window.

This requires several steps, but the one I am having most problem 
finding info on is the ff:

1. using/interacting the Python interpreter from VB6

Any pointers/demos etc are very welcome - and if this has already been 
done, please let me know, so I can learn from what someone else has done


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Wed Oct 24 10:09:29 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Wed, 24 Oct 2007 16:09:29 +0200
Subject: Better writing in python
References: <1193227780.481365.261900@q3g2000prf.googlegroups.com>
Message-ID: <5o920pFllmt9U2@mid.individual.net>

Alexandre Badez wrote:
> I'm just wondering, if I could write a in a "better" way this code
> [...]
> I think there is a better way, but I can't see how...

What's "better" for you? Shorter? More performant? More readable?
Complying with best practice? Closely following a specific
programming paradigm?

Regards,


Bj?rn

-- 
BOFH excuse #403:

Sysadmin didn't hear pager go off due to loud music from bar-room
speakers.



From jelleferinga at gmail.com  Wed Oct 31 11:43:29 2007
From: jelleferinga at gmail.com (jelle feringa)
Date: Wed, 31 Oct 2007 16:43:29 +0100
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
In-Reply-To: <20071031150952.GA27664@sdf.lonestar.org>
References: <loom.20071031T132748-928@post.gmane.org>
	<1193844846.4728a06e52cb8@comuh.uh.cu>
	<37fac3b90710310755y4252c0dai307b083ae4a39daf@mail.gmail.com>
	<20071031150952.GA27664@sdf.lonestar.org>
Message-ID: <37fac3b90710310843x333e3233r6b98f47ba3bf004b@mail.gmail.com>

>  The statement that you want to test the truth of is s.find(q) >= 0.  In
> other words, you want to see that the substring was found at a valid
> (non-negative) location. As someone else pointed out, it would make more
> sense to use None instead of -1.


I agree, that would be nice.

  You still couldn't use `if s.find(q):` because you'd get a false result
> for a substring found at the beginning of the string, but the return value
> would make more intuitive sense.


I'm sorry, but is that so?
>>>None == 0
False

Since the start of the string is indicated by 0 and not None, that should
work, right?

Witness also the problem of actually using the result of find:
>
> s[s.find(q)]
>
> will yield a valid part of the string (the last character) when q is not
> found.  If it evaluated to none, you'd get a respectable TypeError instead.
>
> But you still wouldn't--and never will--be able to say `if s.find(q)`,
> because valid array indices can be either true or false.


Yes, but that is the issue here. If the substring is not found, still find()
returns -1, which is a valid indice.
That I think is ugly. I can't think of a case where it would be prefereble
to have find() return -1 rather than None.
Formally speaking, -1 is an ambigious answer, since a perfectly valid
indice.

the '_'.find(' ') might actually make a nice idiom while parsing for
ignoring irrelevant lines, and processing lines that are of interest in the
conditional expression.

Cheers,

-jelle
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071031/a826a260/attachment.html>

From jcd at sdf.lonestar.org  Sun Oct  7 08:09:19 2007
From: jcd at sdf.lonestar.org (J. Cliff Dyer)
Date: Sun, 07 Oct 2007 08:09:19 -0400
Subject: Top Programming Languages of 2013
In-Reply-To: <8a6b8e350710070059w1da168e8jbfb5c4e6cfca744c@mail.gmail.com>
References: <20071007060510.5DC811E4006@bag.python.org>	<fea2hj$t2g$1@sea.gmane.org>
	<8a6b8e350710070059w1da168e8jbfb5c4e6cfca744c@mail.gmail.com>
Message-ID: <4708CC6F.6020307@sdf.lonestar.org>

James Matthews wrote:
> What are these stats based on?
>
This survey here:

http://app.sgizmo.com/reports/4762/6895/QJK8UD9C9371P37EOQ7V8OIC1RP39O/

Now how was this survey advertised?  Who was asked to participate? 
Dunno.  Clearly not MacFans, given the high number of 1 scores given to
Objective C + cocoa.

Interestingly, python got the most votes (619--the next highest were 518
(Java) and 505 (Ruby)), the highest average score (8.5 out of 10,
followed by HTML/CSS with 7.6 and Javascript with 7.3), *and* the
highest percentage of 10 scores, (49.3%, with HTML/CSS second with 28.6%).

Cheers,
Cliff


From paul.hankin at gmail.com  Fri Oct 12 08:04:30 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Fri, 12 Oct 2007 12:04:30 -0000
Subject: Last iteration?
In-Reply-To: <fenk0r$5er$03$1@news.t-online.com>
References: <fenk0r$5er$03$1@news.t-online.com>
Message-ID: <1192190670.504909.271450@v23g2000prn.googlegroups.com>

On Oct 12, 11:58 am, Florian Lindner <Florian.Lind... at xgm.de> wrote:
> Hello,
> can I determine somehow if the iteration on a list of values is the last
> iteration?
>
> Example:
>
> for i in [1, 2, 3]:
>    if last_iteration:
>       print i*i
>    else:
>       print i

Yes, either use enumerate or just stop the loop early and deal with
the last element outside the loop.

xs = [1, 2, 3]
for x in xs[:-1]:
    print x
print xs[-1] * xs[-1]

--
Paul Hankin



From nick.bastin at gmail.com  Fri Oct  5 00:24:19 2007
From: nick.bastin at gmail.com (Nicholas Bastin)
Date: Fri, 5 Oct 2007 00:24:19 -0400
Subject: Howto Launch a windows application ?
In-Reply-To: <47040C25.7040303@gmail.com>
References: <47040C25.7040303@gmail.com>
Message-ID: <66d0a6e10710042124m3364a258r92658376ad735410@mail.gmail.com>

On 10/3/07, stef mientki <stef.mientki at gmail.com> wrote:
> hello,
>
> I'm trying to launch a windows application,
> but as many others on this list, I've some trouble.
> I read some other threads about this topic,
> but sorry, I still don't understand all this (never heard of pipes).
>
> When I use a batch file, I can launch the bat-file from python,
> and the windows application launched from the batchfile is run perfectly.
>
> Now when I try to run the same windows application from Popen or call,
> nothing happens (or at least it's very fast and produces not the
> expected output).
>
> Please enlighten me, preferable in "windows-terminology"  ;-)
>
> thanks,
> Stef Mientki
>
> from subprocess import *
>
> cmd =[]
> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
> cmd.append ( '-long-start' )
> cmd.append ( '-d')
> cmd.append ( '-clear' )
> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
> cmd.append ( 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>
> # DOESN'T WORK
> result = call ( cmd )
>
> # Both Popen and call work
> cmd = [ 'd:\\data_actueel\\d7_test_browser\\JALcc.bat' ]
> #output = Popen ( cmd )
> result = call ( cmd )
> print result

First, call is a convenience function, but in your case, it's probably
not that convenient.  Use the actual Popen constructor so you can get
at the output directly.  Also, ditch the output redirector and use a
pipe:

p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = p.stdout, p.stderr
rcode = p.wait()
print out, err, rcode

Try that and see what happens.  When it doesn't work, look carefully
in out and err and see if anything interesting is in there.  I was
able to open notepad.exe in this way with no problems so my guess is
you're having some other problem, but avoiding the use of the
convenience function will give you stdout and stderr to look at.

--
Nick


From jgardner.jonathangardner.net at gmail.com  Fri Oct 26 16:27:37 2007
From: jgardner.jonathangardner.net at gmail.com (Jonathan Gardner)
Date: Fri, 26 Oct 2007 20:27:37 -0000
Subject: "sem_post: Invalid argument"
In-Reply-To: <ffr18e$n10$1@news.albasani.net>
References: <ffqse9$ci8$1@news.albasani.net>
	<1193342663.607436.219500@57g2000hsv.googlegroups.com>
	<ffr18e$n10$1@news.albasani.net>
Message-ID: <1193430457.072852.27810@z24g2000prh.googlegroups.com>

On Oct 25, 2:19 pm, robert <no-s... at not-existing.invalid> wrote:
> Jonathan Gardner wrote:
> > On Oct 25, 12:56 pm, robert <no-s... at not-existing.invalid> wrote:
> >> On a server the binary (red hat) installed python2.4 and also a
> >> fresh compiled python2.5 spits "sem_post: Invalid argument".
> >> What is this and how can this solved?
> >> ...
> >> Python 2.4.3 (#1, Jun  6 2006, 21:10:41)
> >> [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-54)] on linux2
> >> ...
> >> server [~]# uname -a
> >> Linux server 2.4.34.1-p4-smp-bigmem-JWH #1 SMP Mon Mar 19 03:26:57
> >> JST 2007 i686 i686 i386 GNU/Linux
>
> > Are you sure you have compatible binaries? Or did you install a random
> > RPM without checking for dependencies?
>
> Should be compatible - but I am not sure if the kernel was
> recompiled on this machine. And at least the fresh ./configure'ed
> and compiled py2.5, which yields the same problem, should be
> maximum compatible. Maybe because this machine is a "smp-bigmem" ..
>

At this point, I would start digging into the error messages
themselves. Maybe a shout out to the developers of whatever code is
generating that error message. When you understand under what
conditions that error message is thrown, perhaps it will yield some
insight into what python is doing differently than everything else.



From google at mrabarnett.plus.com  Thu Oct  4 19:19:40 2007
From: google at mrabarnett.plus.com (MRAB)
Date: Thu, 04 Oct 2007 16:19:40 -0700
Subject: module confusion
In-Reply-To: <mailman.1499.1191492925.2658.python-list@python.org>
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <fe141n$9u8$1@lust.ihug.co.nz>
	<mailman.1489.1191464586.2658.python-list@python.org>
	<fe1p1i$2a6$1@sea.gmane.org>
	<019401c8065c$13e82d00$03000080@hendrik>
	<mailman.1499.1191492925.2658.python-list@python.org>
Message-ID: <1191539980.189130.244460@k79g2000hse.googlegroups.com>

On Oct 4, 11:11 am, Steve Holden <st... at holdenweb.com> wrote:
> Hendrik van Rooyen wrote:
> > "Steve Holden" <ste...web.com> wrote:
>
> >> religious issues for me. It's more like "This problem has a cross head,
> >> so I'll need a Philips screwdriver".
>
> > As long as it is not a Pozidrive, that is a commendable attitude.
>
> I said cross head, not Pozidriv (tm). But then I have been nown to use a
> Manchester screwdriver[1] on occasion.
>
> regards
>   Steve
>
> [1]:http://www.urbandictionary.com/define.php?term=manchester+screwdriver
>
It's also called a Brummie screwdriver:

http://en.wikipedia.org/wiki/Brummie



From mail at microcorp.co.za  Sat Oct 27 04:24:41 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 27 Oct 2007 10:24:41 +0200
Subject: Going past the float size limits?
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com><mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
Message-ID: <015501c81874$be4ab860$03000080@hendrik>

<jimmy.musselwhite at gmail.com>  wrote:

> On Oct 26, 6:56 pm, "Chris Mellon" <arka... at gmail.com> wrote:

> > What in the world are you trying to count?
>
> The calculation looks like this
>
> A = 0.35
> T = 0.30
> C = 0.25
> G = 0.10
>
> and then I basically continually multiply those numbers together. I
> need to do it like 200,000+ times but that's nuts. I can't even do it
> 1000 times or the number rounds off to 0.0. I tried taking the inverse
> of these numbers as I go but then it just shoots up to "inf".

Yeah right.  Nuts it is.

0.35*0.3*0.25*0.1 is approximately a third of a third of a
quarter of a tenth, or more precisely 2.625 parts in a thousand.

So after the second set of mutiplies,  you have about 6.89 parts in a million,
and then 0.18 parts in a billion after the third, and so on - the exponent grows
by between -3 and -2 on every iteration.

So 0.002625**200000 is a number so small that its about as close as
you can practically get to bugger-all, as it is less than 10 ** -400000,
and more than 10**-600000

Now I have heard rumours that there are approximately 10**80 elementary
particles in the universe, so this is much less than one of them, even if my
rumour is grossly wrong.

A light year is of the order of 9.46*10**18 millimetres, and no human has ever
been that far away from home.  Call it 10**19 for convenience.  So your number
slices the last millimetre in a light year into more than 10**399981 parts.

Have you formulated the problem that you are trying to solve properly?

- Hendrik





From brunobgDELETETHIS at users.sourceforge.net  Thu Oct 11 11:35:26 2007
From: brunobgDELETETHIS at users.sourceforge.net (Bruno Barberi Gnecco)
Date: Thu, 11 Oct 2007 12:35:26 -0300
Subject: Advice on long running processes
In-Reply-To: <roy-D12C51.10481711102007@news.panix.com>
References: <1192113251.302583.208730@v3g2000hsg.googlegroups.com>
	<roy-D12C51.10481711102007@news.panix.com>
Message-ID: <felein01lvj@news3.newsguy.com>

Roy Smith wrote:
> commander_coder at hotmail.com wrote:
> 
> 
>>Hello,
>>
>>I write a lot of CGI scripts, in Python of course.  Now I need to
>>convert some to long-running processes.  I'm having trouble finding
>>resources about the best practices to do that.
>>
>>I've found a lot of email discussions that say something like, "You
>>need to educate yourself about the differences when you have long-
>>running processes" but I've not had a lot of luck with finding things
>>that explain the differences.
> 
> 
> The biggest differences between run-and-exit vs. long running processes are 
> resource management and error recovery.  Let's take them one at a time.
> 
> Resource management.  In a short-lived process, you really don't have to 
> worry about this at all.  Snarf as much memory as you need, open as many 
> files as you want, and when you exit, the operating system cleans it all up 
> for you.  With a long running process, you have to worry about stuff like 
> that.
> 
> In Python, you're isolate from the low-level details of memory management, 
> but still need to think about it a bit.  Imagine you had code that looked 
> like this in your main loop:
> 
> for request in getNextRequest():
>     requestList.append (request)
>     processRequest(request)
> 
> requestList is going to keep growing without bounds and eventually will eat 
> up all available memory in the system and your process will crash.  
> Everything you store, you also need to delete when you're done with it.

	In particular, it is a good idea to call gc.collect() every now
and then, specially if you are in such a loop. I don't know what is the
gc policy in python, but an application of mine that seemed to eat as much
memory as it was available was reduced to a constant small amount of
memory after I started to call the gc directly.

> The other big thing is error recovery.  In a short lived process, if 
> something fails, you print an error message and exit.  In a long running 
> process, you need to somehow recover from the error and keep going as best 
> you can.  This can be tricky.

	You should have your main loop inside a try/except, to catch any
exceptions that were not otherwise caught without exiting the application.
Log the exceptions, of course, but in most long running applications
work in a loop like Roy Smith's code above, so if one of them fails it
won't disrupt the others to come.

-- 
Bruno Barberi Gnecco <brunobg_at_users.sourceforge.net>
The earth is like a tiny grain of sand, only much, much heavier.


From carsten at uniqsys.com  Tue Oct  2 18:50:24 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Tue, 02 Oct 2007 18:50:24 -0400
Subject: global variables
In-Reply-To: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
References: <1191363644.265343.316230@k79g2000hse.googlegroups.com>
Message-ID: <1191365424.3271.7.camel@localhost.localdomain>

On Tue, 2007-10-02 at 15:20 -0700, TheFlyingDutchman wrote:
> Does anyone know how the variables label and scale are recognized
> without a global statement or parameter, in the function resize() in
> this code:
> [...]

The answer to your question is "Yes."

-- 
Carsten Haese
http://informixdb.sourceforge.net




From hniksic at xemacs.org  Wed Oct 17 10:05:02 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Wed, 17 Oct 2007 16:05:02 +0200
Subject: Static variable vs Class variable
References: <1191946572.001076.271970@50g2000hsm.googlegroups.com>
	<mailman.30.1191948693.916.python-list@python.org>
	<5n1rosFftvtbU1@mid.uni-berlin.de> <13gngt29ovvcld1@corp.supernews.com>
	<5n26i7FfmohvU1@mid.uni-berlin.de> <13go1jqli5up5d1@corp.supernews.com>
	<5n39eaFg1m0qU1@mid.uni-berlin.de>
	<1192606439.190757.23530@i13g2000prf.googlegroups.com>
	<Xns99CC5B9CBE886duncanbooth@127.0.0.1>
	<1192608969.051177.167130@q5g2000prf.googlegroups.com>
	<Xns99CC6729BAC69duncanbooth@127.0.0.1>
	<1192612830.110577.153790@i13g2000prf.googlegroups.com>
	<8764165bki.fsf@mulj.homelinux.net>
	<Xns99CC7D4AA3887duncanbooth@127.0.0.1>
	<871wbu55pp.fsf@mulj.homelinux.net>
	<Xns99CC8A3F736D4duncanbooth@127.0.0.1>
Message-ID: <87myuh4z1t.fsf@mulj.homelinux.net>

Duncan Booth <duncan.booth at invalid.invalid> writes:

> Hrvoje Niksic <hniksic at xemacs.org> wrote:
>
>> The current implementation of += uses __add__ for addition and
>> __iadd__ for addition that may or may not be in-place.  I'd like to
>> know the rationale for that design.
>> 
>
> Apart from the obvious short answer of being consistent (so you don't 
> have to guess whether or not a+=b is going to do an assignment), I think 
> the decision was partly to keep the implementation clean.

The implementation, by necessity, supports a lot of historical cruft,
so keeping it clean was not a priority.  (This is not a criticism, I
like how they kept backward compatibility.)

> Right now an inplace operation follows one of three patterns:
[...]

Thanks for pointing it out; I didn't realize just how much work went
into the new assignment opcodes.  Given the complexity, it's a wonder
they're there at all!


From zentraders at gmail.com  Thu Oct 25 18:24:04 2007
From: zentraders at gmail.com (Zentrader)
Date: Thu, 25 Oct 2007 15:24:04 -0700
Subject: Delete all not allowed characters..
In-Reply-To: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
References: <1193323956.095828.265100@57g2000hsv.googlegroups.com>
Message-ID: <1193351044.076248.72190@v29g2000prd.googlegroups.com>

>         allowed =
> [u'+',u'0',u'1',u'2',u'3',u'4',u'5',u'6',u'7',u'8',u'9',u' ', u'?',
> u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', u'?', 'A',
> 'C', 'B', 'E', 'D', 'G', 'F', 'I', 'H', 'K', 'J', 'M', 'L', 'O', 'N',
> 'Q', 'P', 'S', 'R', 'U', 'T', 'W', 'V', 'Y', 'X', 'Z', 'a', 'c', 'b',
> 'e', 'd', 'g', 'f', 'i', 'h', 'k', 'j', 'm', 'l', 'o', 'n', 'q', 'p',
> 's', 'r', 'u', 't', 'w', 'v', 'y', 'x', 'z']

Using ord() may speed things up.  If you want to include A through Z
for example, you can use
ord_chr=ord(chr)   ## convert once
if (ord_chr) > 64 and (ord_chr < 91):    (On a U.S. English system)
and won't have to check every letter in an 'include it' string or
list.  Lower case "a" through "z" would be a range also, and u'0'
through u'9' should be as well.  That would leave a few remaining
characters that may have to be searched if they are not contiguous
decimal numbers.



From stodge at gmail.com  Sat Oct 13 20:29:05 2007
From: stodge at gmail.com (Stodge)
Date: Sun, 14 Oct 2007 00:29:05 -0000
Subject: Saving parameters between Python applications?
In-Reply-To: <mailman.825.1190315833.2658.python-list@python.org>
References: <1189969538.830532.98840@g4g2000hsf.googlegroups.com>
	<mailman.825.1190315833.2658.python-list@python.org>
Message-ID: <1192321745.349125.255360@y27g2000pre.googlegroups.com>

os.getppid() isn't cross platform. I don't think it works on Windows.
I think I'll just create a simple shell script (BAT or Bash) for each
platform as needed.

Thanks

On Sep 20, 3:17 pm, David <wizza... at gmail.com> wrote:
> On 9/16/07, Stodge <sto... at gmail.com> wrote:
>
>
>
> > I'm trying to do the following. I have a Python application that is
> > run:
>
> > python app1.py --location=c:\test1
>
> > What I want to do is save the location parameter, so I can then do (in
> > the same window):
>
> > python app2.py
>
> > And have app2.py automatically have access to the value of "location".
>
> > Now, the difficult part is, that in another window I want to do:
>
> > python app1.py --location=c:\test2
> > python app2.py
>
> > And have app2.py automatically get c:\test2 as the location. So the
> > two windows (consoles) are isolated from each other.
>
> > I thought I could use os.environ, but that doesn't save the variable
> > for applications that are run afterwards in the same window.
>
> Use a value based on your current tty. I don't know how to get this
> value in Python but you could just shell 'tty' and grab the output.
>
> Or, to get your parent process's pid, use os.getppid().
>
> Then, use a temporary file whose name is based on the above info.




From skpatel20 at gmail.com  Wed Oct 10 04:11:26 2007
From: skpatel20 at gmail.com (Sanjay)
Date: Wed, 10 Oct 2007 01:11:26 -0700
Subject: pytz has so many timezones!
In-Reply-To: <mailman.6.1191913405.916.python-list@python.org>
References: <1191828739.635927.86590@57g2000hsv.googlegroups.com>
	<1191865263.572366.270820@y42g2000hsy.googlegroups.com>
	<mailman.1676.1191866438.2658.python-list@python.org>
	<1191874352.380018.216090@k79g2000hse.googlegroups.com>
	<mailman.1685.1191875226.2658.python-list@python.org>
	<1191909945.520161.179960@o3g2000hsb.googlegroups.com>
	<mailman.6.1191913405.916.python-list@python.org>
Message-ID: <1192003886.866680.248600@v3g2000hsg.googlegroups.com>

Thanks a lot, Guys. The immediate step I think to take is having two
combo boxes (dividing the data by '/'). Thanks for enormous response
and the valuable suggestions!

Sanjay



From marco at sferacarta.com  Tue Oct 30 06:53:49 2007
From: marco at sferacarta.com (Marco Mariani)
Date: Tue, 30 Oct 2007 11:53:49 +0100
Subject: Iteration for Factorials
In-Reply-To: <slrnfidvsg.skr.nick@irishsea.home.craig-wood.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<slrnfhvalj.67s.nick@irishsea.home.craig-wood.com>
	<pecora-9E92E0.17050024102007@ra.nrl.navy.mil>
	<7xodeouga8.fsf@ruckus.brouhaha.com>
	<1193396435.916666.277770@50g2000hsm.googlegroups.com>
	<5oKdncgTz5YBBb_anZ2dnUVZ_obinZ2d@comcast.com>
	<1193731947.088651.324330@50g2000hsm.googlegroups.com>
	<slrnfidvsg.skr.nick@irishsea.home.craig-wood.com>
Message-ID: <13EVi.1115$Ng7.699@tornado.fastwebnet.it>

Nick Craig-Wood wrote:

> Note you can write your middle loop as
> 
>     for i in range(I):
>         number = myNumer[:]
>         random.shuffle(number)
>         if number == myNumer:
>             count+=1

Nice. Try 'em all, then count 'em.

Another wtfery would be a SQLAlchemy solution, generating dynamic 
queries, using only OUTER JOINs and COUNT(). Could be a way to justify 
hardware upgrades.




From fred.sells at adventistcare.org  Thu Oct 11 14:52:51 2007
From: fred.sells at adventistcare.org (Sells, Fred)
Date: Thu, 11 Oct 2007 14:52:51 -0400
Subject: Pyro:  ActiveState (wind32) to Unix
In-Reply-To: <470e5992$0$14460$426a34cc@news.free.fr>
Message-ID: <0A53725C4A497848A7B3A0874B2598313D38EB@acesxch01.ADVENTISTCORP.NET>

I'm using ActiveState python on a windows box to talk to ACtive Directory.  I'm running a Pyro Server on the same box.

The client is Linux running std Python 2.4.

It works just fine until the server codes calls some win32com.client api;  then I get 


Traceback (most recent call last):
  File "C:\All\projects\AccAdminTools\src\demo002\client\client.py", line 25, in ?
    unittest()	
  File "C:\All\projects\AccAdminTools\src\demo002\client\client.py", line 21, in unittest
    properties = ad.getProperties()
  File "c:\all\tools\python24\lib\site-packages\Pyro-3.7-py2.4-win32.egg\Pyro\core.py", line 390, in __call__
    return self.__send(self.__name, args, kwargs)
  File "c:\all\tools\python24\lib\site-packages\Pyro-3.7-py2.4-win32.egg\Pyro\core.py", line 468, in _invokePYRO
    return self.adapter.remoteInvocation(name, constants.RIF_VarargsAndKeywords, vargs, kargs)
  File "c:\all\tools\python24\lib\site-packages\Pyro-3.7-py2.4-win32.egg\Pyro\protocol.py", line 416, in remoteInvocation
    answer = pickle.loads(answer)
ImportError: No module named pywintypes

____________________the offending code is ________________________________________    def getProperties(self):
    def getProperties(self):
      attr_dict={}
      adobj=win32com.client.GetObject(self.LdapPath)  #<<<<this line causes the error
      return {'aaa':'bbb'}


From real.self at gmail.com  Thu Oct 11 13:19:25 2007
From: real.self at gmail.com (real.self at gmail.com)
Date: Thu, 11 Oct 2007 17:19:25 -0000
Subject: [Python-SWIG-C++] one question about wrapper interface files
Message-ID: <1192123165.722790.11920@d55g2000hsg.googlegroups.com>

Dear All,

I am new to Python and SWIG, and I tried to search the SWIG
mailinglist for my specific question, but I did not find it. And for a
simple one c++ file, I can handle it successfully.

Now I have a small project including several C files, file1.C file2.C
file3.C file2.h file3.h , file1.C is the main() entry for my project,
and file1.C has the following include statements
    #include file2.h
   #include fille3.h

So for using SWIG,  What should I do?

Thanks in advance!

Jiangfan Shi



From bignose+hates-spam at benfinney.id.au  Tue Oct  2 07:39:38 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 02 Oct 2007 21:39:38 +1000
Subject: readline() - problem
References: <1191324355.483989.37290@d55g2000hsg.googlegroups.com>
Message-ID: <87fy0tsq2t.fsf@benfinney.id.au>

piotr at kolodziejczyk.waw.pl writes:

> import string

Why import 'string' if you're not using it?

> f=open('/test/test.asc','r')
> o=open('/test/out.asc','w')
> for line in f:
>     s= f.readline()

Your line object is already bound to the 'line' name in each
iteration. You need to use that, not attempt to read yet another line
each time.

That is, instead of::

    for line in f:
        foo = f.readline()
        do_interesting_thing(foo)

you should do this::

    for line in f:
        do_interesting_thing(line)

-- 
 \     "The cost of a thing is the amount of what I call life which is |
  `\       required to be exchanged for it, immediately or in the long |
_o__)                                    run."  -- Henry David Thoreau |
Ben Finney


From skpatel20 at gmail.com  Mon Oct  8 03:32:19 2007
From: skpatel20 at gmail.com (Sanjay)
Date: Mon, 08 Oct 2007 00:32:19 -0700
Subject: pytz has so many timezones!
Message-ID: <1191828739.635927.86590@57g2000hsv.googlegroups.com>

Hi All,

I am using pytz.common_timezones to populate the timezone combo box of
some user registration form. But as it has so many timezones (around
400), it is a bit confusing to the users. Is there a smaller and more
practical set? If not, some suggestions on how to handle the
registration form effectively would help me a lot.

thanks
Sanjay



From khemkaamit at gmail.com  Mon Oct 22 03:40:32 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Mon, 22 Oct 2007 13:10:32 +0530
Subject: Hi to every one
In-Reply-To: <241c3ebb0710220026u31f742b1nb2784ebad5ac6ded@mail.gmail.com>
References: <241c3ebb0710220026u31f742b1nb2784ebad5ac6ded@mail.gmail.com>
Message-ID: <1360b7230710220040s581a4a47sd7ba2cc41aebf408@mail.gmail.com>

On 10/22/07, niket mhatre <niketmhatre.python at gmail.com> wrote:
> Hello to every member of this list.
> Can any one tell me where to find various python development in to linux
> clustering? Just give me some startup info for searching such material. I m
> starting to writing some patches in my existed cluster at my college. Just
> look for python development held in this area.
> Hey i was active member of this from last 2 year, i had just changed my
> email address.

Have a look at : http://cheeseshop.python.org/pypi?%3Aaction=browse

Cheers,
--
Amit Khemka


From parnell.s at comcast.net  Thu Oct 18 22:08:48 2007
From: parnell.s at comcast.net (Ixiaus)
Date: Thu, 18 Oct 2007 19:08:48 -0700
Subject: Noob questions about Python
In-Reply-To: <13hfprcfkb0fpd2@corp.supernews.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
	<1192658316.048082.212190@v23g2000prn.googlegroups.com>
	<1192659838.773066.160060@i38g2000prf.googlegroups.com>
	<1192663840.916445.207420@k35g2000prh.googlegroups.com>
	<13hfprcfkb0fpd2@corp.supernews.com>
Message-ID: <1192759728.079459.251050@t8g2000prg.googlegroups.com>

That was a very helpful answer Steven, thank you for taking the time
to write it!



From devraj at gmail.com  Mon Oct 29 05:58:54 2007
From: devraj at gmail.com (Devraj)
Date: Mon, 29 Oct 2007 09:58:54 -0000
Subject: urllib2 weirdness when https_proxy environment variable is
	exported
In-Reply-To: <87wst8sdqq.fsf@pobox.com>
References: <1193357737.787398.135110@q3g2000prf.googlegroups.com>
	<87wst8sdqq.fsf@pobox.com>
Message-ID: <1193651934.060498.237830@i38g2000prf.googlegroups.com>

Hi John,

Thanks for that.

Do you have any web urls that I can see an example of the hack?


On Oct 28, 3:50 am, j... at pobox.com (John J. Lee) wrote:
> Devraj <dev... at gmail.com> writes:
> > I have been extensively using Python's urllib2 while developing a
> > project with the Google Data API. The Google Data API uses httplib to
> > place all of its requests. However I have been using urllib2 and some
> > handlers that I discovered in an ASPN article to handle HTTPS proxies
> > in my code.
>
> > The Google Data API relies on an environment variable called
> > https_proxy to get information about the proxy to be used. However
> > urllib2 starts spitting out the BadStatusLine exception if the
> > https_proxy environment variable is found.
>
> [...]
>
> This is because urllib2 does not support HTTPS proxies (neither does
> urllib).  See Python cookbook for a hack to get it working.
>
> John




From steve at REMOVE-THIS-cybersource.com.au  Sun Oct 21 10:37:55 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 21 Oct 2007 14:37:55 -0000
Subject: Splitting URLs
Message-ID: <13hmp2330pgrua4@corp.supernews.com>

I'm trying to split a URL into components. For example:

URL = 'http://steve:secret at www.domain.com.au:82/dir" + \
    'ectory/file.html;params?query#fragment'


(joining the strings above with plus has no significance, it's just to 
avoid word-wrapping)

If I split the URL, I would like to get the following components:

scheme = 'http'
netloc = 'steve:secret at www.domain.com.au:82'
username = 'steve'
password = 'secret'
hostname = 'www.domain.com.au'
port = 82
path = '/directory/file.html'
parameters = 'params'
query = 'query'
fragment = 'fragment'

I can get *most* of the way with urlparse.urlparse: it will split the URL 
into a tuple:

('http', 'steve:secret at www.domain.com.au:82', '/directory/file.html', 
'params', 'query', 'fragment')

If I'm using Python 2.5, I can split the netloc field further with named 
attributes. Unfortunately, I can't rely on Python 2.5 (for my sins I have 
to support 2.4). Before I write code to split the netloc field by hand (a 
nuisance, but doable) I thought I'd ask if there was a function somewhere 
in the standard library I had missed.

This second question isn't specifically Python related, but I'm asking it 
anyway...

I'd also like to split the domain part of a HTTP netloc into top level 
domain (.au), second level (.com), etc. I don't need to validate the TLD, 
I just need to split it. Is splitting on dots sufficient, or will that 
miss some odd corner case of the HTTP specification?

(If it does, I might decide to live with the lack... it depends on how 
odd the corner is, and how much work it takes to fix.)



-- 
Steven.


From rupole at hotmail.com  Fri Oct 12 06:48:13 2007
From: rupole at hotmail.com (Roger Upole)
Date: Fri, 12 Oct 2007 06:48:13 -0400
Subject: Python service gets interrupted function call
References: <1192011064.813082.221520@50g2000hsm.googlegroups.com>
Message-ID: <1192185770_1275@sp12lax.superfeed.net>


"ashish" <ashish.jha at gmail.com> wrote in message news:1192011064.813082.221520 at 50g2000hsm.googlegroups.com...
> Hi All,
> I wanted to know how to handle events like 'logoff' in the main thread
> so that any process which is being run by svcDoRun method of service
> does not get 'interrupted function call' exception.
>
> I am posting a very simple service program , and i want to know that
> is there a way to handle such interrupts without explicitly calling
> try except block over blocking calls.
>
> Here is the example which is getting interrupted exception at logoff.
> =======================================================
> import os, time, sys
> import win32serviceutil, win32service
> import pywintypes, win32con, winerror
> # Use "import *" to keep this looking as much as a "normal" service
> # as possible.  Real code shouldn't do this.
> from win32event import *
> from win32file import *
> from win32pipe import *
> from win32api import *
> from ntsecuritycon import *
>
> import servicemanager
>
> import traceback
> import thread, time
>
> class TrialService(win32serviceutil.ServiceFramework):
>    _svc_name_ = "TrialService"
>    _svc_display_name_ = "TrialService"
>    _svc_description_ = "TrialService"
>    _exe_name_ = "C:/Python24/Lib/site-packages/win32/
> pythonservice.exe"
>
>    def __init__(self, args):
>        win32serviceutil.ServiceFramework.__init__(self, args)
>        self.hWaitStop = CreateEvent(None, 0, 0, None)
>        self.overlapped = pywintypes.OVERLAPPED()
>        self.overlapped.hEvent = CreateEvent(None,0,0,None)
>
>    def SvcStop(self):
>        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
>        SetEvent(self.hWaitStop)
>
>    def SvcDoRun(self):
>        time.sleep(1000)
>
> def ctrl_handler(ctrl_type):
>    return True
>
> if __name__ =='__main__':
>    SetConsoleCtrlHandler(ctrl_handler, True)
>    win32serviceutil.HandleCommandLine(TrialService)
>
> ========================================================
>
> In actual call i just want to call my app in place of time.sleep but
> my app will have blocking code segments.
> Any help will be greatly appreciated .
> Thanks
> Ashish

Use win32api.Sleep, and pass True for the second arg.

             Roger



----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From ldo at geek-central.gen.new_zealand  Wed Oct  3 18:11:03 2007
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 04 Oct 2007 11:11:03 +1300
Subject: module confusion
References: <1191294190.265530.189700@o80g2000hse.googlegroups.com>
	<1191300108.593779.318300@y42g2000hsy.googlegroups.com>
	<mailman.1379.1191301581.2658.python-list@python.org>
	<fdsopm$kd6$4@lust.ihug.co.nz>
	<mailman.1404.1191345163.2658.python-list@python.org>
	<fdvpu1$ejq$2@lust.ihug.co.nz> <874ph8sdhx.fsf@benfinney.id.au>
Message-ID: <fe141n$9u8$1@lust.ihug.co.nz>

In message <874ph8sdhx.fsf at benfinney.id.au>, Ben Finney wrote:

> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:
> 
>> On my Gentoo system:
>> 
>>     >>> import os
>>     >>> os.path
>>     <module 'posixpath' from '/usr/lib64/python2.5/posixpath.pyc'>
>> 
>> It's just a variable that happens to point to the posixpath module.
> 
> There's no "pointing" going on. It's another name bound to the same
> object, of equal status to the 'posixpath' name.
> 
> Python doesn't have pointers, and even "variable" is a misleading term
> in Python. Best to stick to "name" and "bound to".

In Python, all names _are_ variables. They are not "bound" to objects. The
value of os.path is a pointer. It's implemented as a pointer, it has all
the semantics of a pointer.

Honestly, why do people react to the word "pointer" as though computers have
to wear underwear to conceal something shameful going on in their nether
regions?


From jjl at pobox.com  Mon Oct 22 08:41:18 2007
From: jjl at pobox.com (John J. Lee)
Date: Mon, 22 Oct 2007 12:41:18 GMT
Subject: I can't get minimock and nosetests to play nice
References: <slrnfhg81f.itb.matt@coleridge.tplus1.com>
Message-ID: <87hckjl3te.fsf@pobox.com>

Matthew Wilson <matt at tplus1.com> writes:

> I'm curious if anyone has ever tried using nosetests along with
> minimock.

This has nothing to do with nose.


> I'm trying to get the two to play nice and not making progress.  I
> also wonder if I'm using minimock incorrectly.
>
> Here's the code I want to test, saved in a file dtfun.py.
>
>     class Chicken(object):
>        "I am a chicken."
>        def x(self): return 1
>        def z(self): return 1
>
>     def g():
>
>        """
>        Verify that we call method x on an instance of the Chicken class.
>
>        # First set up the mockery.
>        >>> from minimock import Mock
>        >>> Chicken = Mock('Chicken')
>        >>> Chicken.mock_returns = Mock('instance_of_chicken')

This does not rebind the module global name "Chicken".


>        Now this stuff is the real test.
>        >>> g()
>        Called Chicken()
>        Called instance_of_chicken.x()

g() returns None, and prints nothing.

[...]
> File "/home/matt/svn-checkouts/scratch/python/dtfun/dtfun.py", line
> 22, in dtfun.g
> Failed example:
>    g()
> Expected:
>    Called Chicken()
>    Called instance_of_chicken.x()
> Got nothing

... because g() returns None, and prints nothing.

[...]
> Any ideas?

Read the Python tutorial, write some Python code and some doctests
without using minimock.  Google about Python scoping rules.  Read the
doctest docs about the global namespace seen by doctest-ed code:

http://docs.python.org/lib/doctest-execution-context.html


John


From evan at yelp.com  Wed Oct 31 03:31:38 2007
From: evan at yelp.com (Evan Klitzke)
Date: Wed, 31 Oct 2007 00:31:38 -0700
Subject: marshal vs pickle
Message-ID: <cfb58d850710310031k2ca0afa2vaa02cd167ff32b1c@mail.gmail.com>

The documentation for marshal makes it clear that there are no
guarantees about being able to correctly deserialize marshalled data
structures across Python releases. It also implies that marshal is not
a general "persistence" module. On the other hand, the documentation
seems to imply that marshalled objects act more or less like pickled
objects.

Can anyone elaborate more on the difference between marshal and
pickle. In what conditions would using marshal be unsafe? If one can
guarantee that the marshalled objects would be created and read by the
same version of Python, is that enough?

-- 
Evan Klitzke <evan at yelp.com>


From mail at microcorp.co.za  Tue Oct 23 03:08:17 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Tue, 23 Oct 2007 09:08:17 +0200
Subject: Need help parsing with pyparsing...
References: <2WZSi.151640$nh4.105853@fe09.news.easynews.com>
	<1193070904.326690.49360@i38g2000prf.googlegroups.com>
Message-ID: <013301c8154b$0717f440$03000080@hendrik>

 "Paul McGuire" <pt....stin.rr.com> wrote:


> By the way, are these possible data lines?:
> 
> A Line With No Upper Case Words
> A LINE WITH NO TITLE CASE WORDS
> SOME UPPER CASE WORDS A Title That Begins With A One Letter Word

That last one is a killer, and comes under the heading of "cruel and unusual".

try this:

THIS IS NONSENSE, SAY I A Fellow Needs A Break

I can't think of a way to handle these without explicitly programming for them.

- Hendrik



From kyosohma at gmail.com  Thu Oct 11 14:00:20 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Thu, 11 Oct 2007 11:00:20 -0700
Subject: Building Binary Packages
In-Reply-To: <pan.2007.10.10.16.49.52@afn.org>
References: <1192026935.627151.160810@19g2000hsx.googlegroups.com>
	<pan.2007.10.10.16.49.52@afn.org>
Message-ID: <1192125620.548410.278670@19g2000hsx.googlegroups.com>

On Oct 10, 11:53 am, "Jim B. Wilson" <wil... at afn.org> wrote:
> On Wed, 10 Oct 2007 14:35:35 +0000, kyosohma wrote:
> > I am trying to figure out how to build binaries for Python packages and
> > I've done it with MinGW.
>
> Apparently, you still can:http://tinyurl.com/yb4bps

I had an acquaintance look at that information who has way more
experience in compiling extensions than I do. He says:

"MinGW seems to usually link to msvcrt.dll and the Python
distributions link to msvcr71.dll. It might be possible to convince
MinGW to use msvcr71.dll by editing the specs config file but I think
it will still link to msvcrt.dll in some cases, possibly alongside
msvcr71.dll which makes this quite a mess to debug."

Does anyone know if this is an issue?

Mike



From michael at jedimindworks.com  Wed Oct  3 05:49:53 2007
From: michael at jedimindworks.com (Michael Bentley)
Date: Wed, 3 Oct 2007 02:49:53 -0700
Subject: generating range of numbers
In-Reply-To: <1191403125.540152.72320@22g2000hsm.googlegroups.com>
References: <1191403125.540152.72320@22g2000hsm.googlegroups.com>
Message-ID: <E9721E87-6807-4250-A132-0ADC01B432F1@jedimindworks.com>


On Oct 3, 2007, at 2:18 AM, vimal wrote:

>      i am new to python.....
>      i just want to generate numbers in the form like:
>
>     1,2,4,8,16,32.....to a maximum of 1024
>
>     using a range function

I don't think it can be done with *only* a range function...

import math
[pow(2, x) for x in range(math.log(1024, 2) +1)]

hth,
Michael
---
Debugging is twice as hard as writing the code in the first place.   
Therefore, if you write the code as cleverly as possible, you are, by  
definition, not smart enough to debug it. --Brian W. Kernighan




From bdesth.quelquechose at free.quelquepart.fr  Mon Oct  1 16:07:51 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 01 Oct 2007 22:07:51 +0200
Subject: Question about quoting style.
In-Reply-To: <mailman.1366.1191268378.2658.python-list@python.org>
References: <mailman.1366.1191268378.2658.python-list@python.org>
Message-ID: <470153d9$0$27239$426a74cc@news.free.fr>

Steven W. Orr a ?crit :
> Python has a number of "quoting" 'options' to help """with
> times when""" one way may be more convenient than another.
> 
> In the world of shell scripting, I use a technique that I call minimal 
> quoting. It works like this:
> 
> foo=bar            # No quotes needed
> echo $foo        # Also none needed
> baz='Hello there'    # Don't use double quotes. No iterpolation.
> qaz="$baz $foo and grill" # Interpolation needs double quotes.
> 
> Is there some sort of best practices approach for when different types 
> of quoting should be employed?

First point is that Python has no "variable interpolation". Second point 
is in Python, quoting style makes no difference wrt escape sequences 
(\n, \t etc). Third point is that quoting is not optional when it comes 
to string literals - but I guess you knew this one already !-)

Where it makes a difference is that "triple-quoted" string literals 
preserves newlines (ok, I guess you knew this too)

IOW, it's mostly a matter of commodity: use double quotes when you don't 
want to bother escaping sngle quotes, and vice-versa. As far as I'm 
concerned, and since it's quite more common to have a single quote than 
a double one in a string literal, I tend to use double-quoted strings by 
default. But YMMV !-)



From gheize at gmail.com  Thu Oct 25 20:50:10 2007
From: gheize at gmail.com (Guillermo Heizenreder)
Date: Thu, 25 Oct 2007 21:50:10 -0300
Subject: [python-list] Problem with SQLObject
Message-ID: <1193359810.3365.20.camel@localhost>

I'm creating one aplicattion and I use SQLObject, but I have a little
problem, when I try to create one table my aplicattion crash! :(
Let me show you:

nercof at debian:~/Proyectos/ghhp/lib$ python
Python 2.4.4 (#2, Apr  5 2007, 20:11:18)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from sqlobject import *
>>> from connection import conn
>>> class User(SQLObject):
...     _connection = conn
...     user_name = StringCol(length=14, unique=True)
...     un_pass = StringCol(length=10)
...
>>> User.createTable()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.4/site-packages/sqlobject/main.py", line 1332,
in createTable
    conn.createTable(cls)
  File "/usr/lib/python2.4/site-packages/sqlobject/dbconnection.py",
line 528, in createTable
    self.query(self.createTableSQL(soClass))
  File "/usr/lib/python2.4/site-packages/sqlobject/dbconnection.py",
line 307, in query
    return self._runWithConnection(self._query, s)
  File "/usr/lib/python2.4/site-packages/sqlobject/dbconnection.py",
line 219, in _runWithConnection
    conn = self.getConnection()
  File "/usr/lib/python2.4/site-packages/sqlobject/dbconnection.py",
line 230, in getConnection
    conn = self.makeConnection()
  File
"/usr/lib/python2.4/site-packages/sqlobject/mysql/mysqlconnection.py",
line 51, in makeConnection
    db=self.db, user=self.user, passwd=self.password, **self.kw)
  File "/usr/lib/python2.4/site-packages/MySQLdb/__init__.py", line 75,
in Connect
    return Connection(*args, **kwargs)
  File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line
164, in __init__
    super(Connection, self).__init__(*args, **kwargs2)
TypeError: an integer is required
>>>

I can't find the mistake. 
First I thought that not create correctly the conection to mysql, but
testening show me this:

>>> User._connection
<sqlobject.mysql.mysqlconnection.MySQLConnection instance at 0xb784df8c>
>>>

Saw it seems that it works.
Please cant you help me.
Thank's and regards

-- 
+---------------------------------
| Heizenreder Guillermo 
| http://gheize.wordpress.com/
| http://code.google.com/u/gheize/
| http://tipslinux.blogspot.com/
+---------------------------------



From tjreedy at udel.edu  Tue Oct  9 13:00:25 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 9 Oct 2007 13:00:25 -0400
Subject: The fundamental concept of continuations
References: <1191906949.179197.217470@57g2000hsv.googlegroups.com>
Message-ID: <fegc39$eqg$1@sea.gmane.org>


<gnuist006 at gmail.com> wrote in message 
news:1191906949.179197.217470 at 57g2000hsv.googlegroups.com...
| Again I am depressed to encounter a fundamentally new concept that I
| was all along unheard of. Its not even in paul graham's book where i
| learnt part of Lisp. Its in Marc Feeley's video.
|
| Can anyone explain:
|
| (1) its origin
| (2) its syntax and semantics in emacs lisp, common lisp, scheme
| (3) Is it present in python and java ?
| (4) Its implementation in assembly. for example in the manner that
| pointer fundamentally arises from indirect addressing and nothing new.
| So how do you juggle PC to do it.
| (5) how does it compare to and superior to a function or subroutine
| call. how does it differ.
|
| Thanks a lot.
|
| (6) any good readable references that explain it lucidly ?

I am starting with the Wikipedia article 'Continuation' which has 
references both to other W. articles and several other books and papers. 





From korovev76 at gmail.com  Fri Oct 26 06:26:34 2007
From: korovev76 at gmail.com (korovev76 at gmail.com)
Date: Fri, 26 Oct 2007 03:26:34 -0700
Subject: tuples within tuples
Message-ID: <1193394394.235504.273390@y42g2000hsy.googlegroups.com>

Hello everybody.

I'm wondering how to iterate over a tuple like this
[A,B,C,D]
while saving A and C in a list.

My problem is that C sometimes is a tuple of the same structure
itself...


thanks!
korovev



From christopher.pax at gmail.com  Mon Oct  1 13:05:14 2007
From: christopher.pax at gmail.com (Chris Pax)
Date: Mon, 01 Oct 2007 10:05:14 -0700
Subject: using inspect on pygtk
In-Reply-To: <mailman.1351.1191257643.2658.python-list@python.org>
References: <1191031070.901842.71210@o80g2000hse.googlegroups.com>
	<mailman.1351.1191257643.2658.python-list@python.org>
Message-ID: <1191258314.523910.290880@22g2000hsm.googlegroups.com>

On Oct 1, 12:53 pm, "BJ?rn Lindqvist" <bjou... at gmail.com> wrote:
> On 9/29/07, Chris Pax <christopher.... at gmail.com> wrote:
>
> > Hello,
>
> > I recently been trying to use the inspect module to inspect the
> > arguments of gtk objects, such as gtk.Button. I tried like this:
>
> > inspect.getargspec(gtk.Button.__init__)
>
> > and get the fallowing error:
>
> >   File "<stdin>", line 1, in <module>
> >   File "/usr/lib/python2.5/inspect.py", line 743, in getargspec
> >     raise TypeError('arg is not a Python function')
> > TypeError: arg is not a Python function
>
> What you are seeing is completely normal. inspect.getargspec(sys.exit)
> gives the same result. PyGTK is a wrapper around the GTK+ C library
> and since all the code is written in C, inspect can't infer anything
> about the function gtk.Button.__init__.
>
> --
> mvh Bj?rn

ok thank you very much for answering my question.
so, i guess that there is no way to do this via code.. oh well



From zzbbaadd at aol.com  Tue Oct  2 18:20:44 2007
From: zzbbaadd at aol.com (TheFlyingDutchman)
Date: Tue, 02 Oct 2007 15:20:44 -0700
Subject: global variables
Message-ID: <1191363644.265343.316230@k79g2000hse.googlegroups.com>

Does anyone know how the variables label and scale are recognized
without a global statement or parameter, in the function resize() in
this code:



#!/usr/bin/env python

from Tkinter import *

def resize(ev=None):
      label.config(font='Helvetica -%d bold' % \
          scale.get())


top = Tk()
top.geometry('250x150')

label = Label(top, text='Hello World!',
    font='Helvetica -12 bold')
label.pack(fill=Y, expand=1)

scale = Scale(top, from_=10, to=40,
     orient=HORIZONTAL, command=resize)
scale.set(12)
scale.pack(fill=X, expand=1)

quit = Button(top, text='QUIT',
    command=top.quit, activeforeground='white',
    activebackground='red')
quit.pack()

mainloop()



From has.temp3 at virgin.net  Mon Oct 15 21:57:31 2007
From: has.temp3 at virgin.net (has)
Date: Mon, 15 Oct 2007 18:57:31 -0700
Subject: Python module for making Quicktime or mpeg movies from images
In-Reply-To: <1192492518.067625.197110@v23g2000prn.googlegroups.com>
References: <1192113745.291983.292950@50g2000hsm.googlegroups.com>
	<5n6r5bFfp4a6U1@mid.uni-berlin.de>
	<1192115372.754998.270520@o80g2000hse.googlegroups.com>
	<mailman.87.1192115776.927.python-list@python.org>
	<1192199862.532118.306290@t8g2000prg.googlegroups.com>
	<1192218795.540056.51700@k35g2000prh.googlegroups.com>
	<1192267814.707741.176570@z24g2000prh.googlegroups.com>
	<1192492518.067625.197110@v23g2000prn.googlegroups.com>
Message-ID: <1192499851.671417.215210@t8g2000prg.googlegroups.com>

On 16 Oct, 00:55, jeremito <jerem... at gmail.com> wrote:
>
> > -QuickTimePlayer is standard on OS X and its scripting interface
> > (which you can access from Python via appscript, and is fully usable
> > even in unpaid mode) includes an 'open image sequence' command.
>
> I have used this, but I want to automate this so I wanted something I
> could call from my Python script.

That's the idea. e.g. Something like:

from appscript import *
from mactypes import *

mov = app ('Quicktime Player.app').open_image_sequence(Alias('/path/to/
image-1.jpg'), frames_per_second=5)
mov.export(to=File('/path/to/output.mov'), as_=k.QuickTime_movie,
timeout=0)
mov.close(saving=k.no)

The only downside of this approach is that if you're making, say, a
highly polished shrinkwrapped product, having it launch external
applications to do some of the work might not create quite the
impression you want with users.


> > - The Cocoa API's QTKit class (accessible via PyObjC) includes a -
> > addImage:forDuration:withAttributes: method that you could use to
> > build up a movie yourself.
>
> This sounds like a good option.  I have downloaded and installed
> PyObjC and am currently looking for the QTKit class but have been
> unsuccessful so far.  A cursory glance at the documentation hasn't
> produced any help, yet.  I'll keep looking unless you can point to it
> directly.

import QTKit

will import the PyObjC wrapper for the QTKit framework. See PyObjC's
documentation for general usage information Apple's Cocoa
documentation for further information on QTKit itself, e.g.:

http://developer.apple.com/quicktime/qtkit.html

HTH

has
--
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org



From mdipierro at cti.depaul.edu  Tue Oct 16 14:02:46 2007
From: mdipierro at cti.depaul.edu (Massimo Di Pierro)
Date: Tue, 16 Oct 2007 13:02:46 -0500
Subject: re.sub
In-Reply-To: <11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
References: <1192503754.490662.155610@v29g2000prd.googlegroups.com>
	<1192516496.148265.103880@e9g2000prf.googlegroups.com>
	<11B0C495-19B5-4FFD-80EC-028078CB19CB@cti.depaul.edu>
Message-ID: <34012412-98C7-47E1-98FF-061543A3A427@cti.depaul.edu>

Even stranger

 >>> re.sub('a', '\\n','bab')
'b\nb'
 >>> print re.sub('a', '\\n','bab')
b
b

Massimo


On Oct 16, 2007, at 1:54 AM, DiPierro, Massimo wrote:

> Shouldn't this
>
>>>> print re.sub('a','\\n','bab')
> b
> b
>
> output
>
> b\nb
>
> instead?
>
> Massimo
>
> On Oct 16, 2007, at 1:34 AM, George Sakkis wrote:
>
>> On Oct 15, 11:02 pm, 7stud <bbxx789_0... at yahoo.com> wrote:
>>> I'm applying groupby() in a very simplistic way to split up some
>>> data,
>>> but when I timeit against another method, it takes twice as long.
>>> The
>>> following groupby() code groups the data between the "</tr>"  
>>> strings:
>>>
>>> data = [
>>> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
>>> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
>>> "1.5","</tr>","2.5","3.5","4.5","</tr>","</tr>","5.5","6.5","</tr>",
>>> ]
>>>
>>> import itertools
>>>
>>> def key(s):
>>>     if s[0] == "<":
>>>         return 'a'
>>>     else:
>>>         return 'b'
>>>
>>> def test3():
>>>
>>>     master_list = []
>>>     for group_key, group in itertools.groupby(data, key):
>>>         if group_key == "b":
>>>             master_list.append(list(group) )
>>>
>>> def test1():
>>>     master_list = []
>>>     row = []
>>>
>>>     for elmt in data:
>>>         if elmt[0] != "<":
>>>             row.append(elmt)
>>>         else:
>>>             if row:
>>>                 master_list.append(" ".join(row) )
>>>                 row = []
>>>
>>> import timeit
>>>
>>> t = timeit.Timer("test3()", "from __main__ import test3, key, data")
>>> print t.timeit()
>>> t = timeit.Timer("test1()", "from __main__ import test1, data")
>>> print t.timeit()
>>>
>>> --output:---
>>> 42.791079998
>>> 19.0128788948
>>>
>>> I thought groupby() would be faster.  Am I doing something wrong?
>>
>> Yes and no. Yes, the groupby version can be improved a little by
>> calling a builtin method instead of a Python function. No, test1  
>> still
>> beats it hands down (and with Psyco even further); it is almost good
>> as it gets in pure Python.
>>
>> FWIW, here's a faster and more compact version with groupby:
>>
>> def test3b(data):
>>     join = ' '.join
>>     return [join(group) for key,group in
>>             itertools.groupby(data, "</tr>".__eq__)
>>             if not key]
>>
>>
>> George
>>
>> --
>> http://mail.python.org/mailman/listinfo/python-list
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From Josef.Robert.Novak at gmail.com  Tue Oct 23 06:37:30 2007
From: Josef.Robert.Novak at gmail.com (kettle)
Date: Tue, 23 Oct 2007 10:37:30 -0000
Subject: japanese encoding iso-2022-jp in python vs. perl
Message-ID: <1193135850.030196.31170@i38g2000prf.googlegroups.com>

Hi,
  I am rather new to python, and am currently struggling with some
encoding issues.  I have some utf-8-encoded text which I need to
encode as iso-2022-jp before sending it out to the world. I am using
python's encode functions:
--
 var = var.encode("iso-2022-jp", "replace")
 print var
--

 I am using the 'replace' argument because there seem to be a couple
of utf-8 japanese characters which python can't correctly convert to
iso-2022-jp.  The output looks like this:
???????????????

 However if use perl's encode module to re-encode the exact same bit
of text:
--
 $var = encode("iso-2022-jp", decode("utf8", $var))
 print $var
--

 I get proper output (no unsightly question-marks):
???????????????

So, what's the deal?  Why can't python properly encode some of these
characters?  I know there are a host of different iso-2022-jp
variants, could it be using a different one than I think (the
default)?  I'm quite liking python at the moment for a variety of
different reasons (I suspect perl will forever win when it comes to
regular expressions but everything else is pretty darn nice), but this
is a bit worrying.

-Joe



From kyosohma at gmail.com  Tue Oct 16 16:52:30 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Tue, 16 Oct 2007 20:52:30 -0000
Subject: how to get my own namespace ?
In-Reply-To: <mailman.90.1192567423.13605.python-list@python.org>
References: <mailman.90.1192567423.13605.python-list@python.org>
Message-ID: <1192567950.466844.163050@e9g2000prf.googlegroups.com>

On Oct 16, 3:43 pm, stef mientki <stef.mien... at gmail.com> wrote:
> I want to view my own namespace,
> i.e. to see the modules namespace in the module itself,
> is that possible ?
>
> I can use
>    dir()
> but I read dir is just a convenience function,
> and besides I want key/value pairs.
>
> thanks,
> Stef Mientki

You should read up on introspection then. I think that's what you
need:

http://www.ibm.com/developerworks/library/l-pyint.html

Mike



From pavlovevidence at gmail.com  Sat Oct 27 05:28:05 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Sat, 27 Oct 2007 02:28:05 -0700
Subject: Going past the float size limits?
In-Reply-To: <13i4vsc2g5v400b@corp.supernews.com>
References: <1193438154.931341.30450@50g2000hsm.googlegroups.com>
	<mailman.487.1193439370.13605.python-list@python.org>
	<1193441374.061735.308710@o38g2000hse.googlegroups.com>
	<13i4vsc2g5v400b@corp.supernews.com>
Message-ID: <1193477285.243323.32060@y42g2000hsy.googlegroups.com>

On Oct 26, 8:00 pm, Grant Edwards <gra... at visi.com> wrote:
> On 2007-10-26, jimmy.musselwh... at gmail.com <jimmy.musselwh... at gmail.com> wrote:
>
> >> What in the world are you trying to count?
>
> > The calculation looks like this
>
> > A = 0.35
> > T = 0.30
> > C = 0.25
> > G = 0.10
>
> The bases in DNA?
>
> > and then I basically continually multiply those numbers together. I
> > need to do it like 200,000+ times but that's nuts.
>
> Exactly.  It sure looks like what you're doing is nuts.
>
> > I can't even do it 1000 times or the number rounds off to 0.0.
> > I tried taking the inverse of these numbers as I go but then
> > it just shoots up to "inf".
>
> Can you explain what it is you're trying to calculate?

Looks pretty obviously to be a calculation of the probability that
bases in the given ratios would randomly form a particular sequence.

What use this would be I cannot tell.


Carl Banks



From erik at myemma.com  Thu Oct 11 00:00:58 2007
From: erik at myemma.com (Erik Jones)
Date: Wed, 10 Oct 2007 23:00:58 -0500
Subject: storing meta data on dictionary keys
In-Reply-To: <1192059622.813393.14190@r29g2000hsg.googlegroups.com>
References: <9785.78885.qm@web81001.mail.mud.yahoo.com>
	<mailman.9.1191989924.927.python-list@python.org>
	<1192059622.813393.14190@r29g2000hsg.googlegroups.com>
Message-ID: <F629C3ED-F143-4F57-95CE-431534297652@myemma.com>


On Oct 10, 2007, at 6:40 PM, Andreas Kraemer wrote:

> On Oct 9, 9:18 pm, Erik Jones <e... at myemma.com> wrote:
>> So, do you not keep references to your nodes anywhere but the actual
>> graph dict?  I kind of agree with Chris here in that two dicts will
>> work. One for the nodes, indexed by their strings.
>
> Yes, I guess that's exactly what I want. To keep things as simple as
> possible and not having to keep track of another dictionary. If you
> look at class Dict(dict) in the OP, simulating the behavior I'd liked
> to have seen for built-in dict itself, the second dictionary is
> actually hidden so I don't have to bother with it any more ...

If you're sure that 1.  this use case won't grow and 2. that you'll  
only be the only person ever using code, then it's your choice of  
preference.  Both of those points are equally important.  1 is a  
manageability issue in that you are complicating what could be an  
easy solution for a small gain in convenience -- one that could just  
as easily be had by encapsulating the management of both dicts in an  
explicit class or function/method.  Let me quote lines 2 through 5 of  
The Zen of Python (PEP20):

Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.

Using two dicts would be explicit, simple and flat.  Your's is none  
of those.

For point 2, if anyone else needs to work with your code they're most  
likely going to be confused as the implementation is overly complex.   
I know when I initially read through it I had to read it a couple  
times to assure myself of what it was doing because I was thinking  
that it seems that there's more going on than there is, so there must  
be.  Remember, the best solutions are those that not only you can  
understand, but the next guy/girl/?.

>
>> And, to use the
>> actual nodes as keys simply override __hash__ in your Node object
>> classes.
>
> The trivial "class Str(str): pass" in the OP (that already inherits
> the correct __hash__ and
> __eq__) serves the same purpose as your Node(object) below, except
> that self.name is stored
> in the str built-in, and there is no flashy initializer.

True, but you're breaking the intended abstraction of inheriting from  
str, i.e. the reason you can inherit from str is so that you can  
specialize strings, not get __has__ and __eq__ for free.  You can  
define those on your own for a reason.

>
>>
>>>>> class Node(object):
>> ...     def __init__(self, name, **kwargs):
>> ...         self.name = name
>> ...         for k, v in kwargs.items():
>> ...             self.__dict__[k] = v
>> ...
>> ...     def __hash__(self):
>> ...         return hash(self.name)
>> ...
>>>>> nodes = {}
>>>>> graph = {}
>>>>>
>>>>> n = Node('foo')
>>>>> m = Node('blah', baz=5)
>>>>>
>>>>> nodes[n.name] = n
>>>>> nodes[m.name] = m
>>>>>
>>>>> for name, node in nodes.items():
>> ...     graph[node] = "whatever for node %s" % name
>> ...
>>>>> nodes{'blah': <__main__.Node object at 0x76c50>, 'foo':
>> <__main__.Node object at 0x76d30>}
>>>>> graph{<__main__.Node object at 0x76c50>: 'whatever for node
>> blah', <__main__.Node object at 0x76d30>: 'whatever for node foo'}
>>>>> graph[nodes['foo']]'whatever for node foo'
>
> I still believe that it would be a nice-to-have, and probably only a
> small effort to equip
> the built-in dict with a get_key() method. The whole mechanism of
> dictionary look-up in Python,
> based on "duck typing", and only caring about the __hash__ and __eq__
> methods supplied by
> the key object, is constructed in a way that allows objects inserted
> into the dictionary as keys
> and objects used for look-up to be (non-trivially) distinct.
> Therefore, it would actually be
> nice to be able to retrieve keys from the dict in a direct way (other
> than via .keys()).
> The same may apply to sets and frozensets as well ...;-)

So, (explicitly:) you want the built-in dict to be a dictionary that  
also maintains a dictionary of its own keys?  Not likely to happen.   
Again, you're asking to have one dictionary act as two and that's  
just confusing.  I'm not saying that get_key is a bad idea for  
(possibly) some use cases, just that what you're actually doing is  
creating a dictionary wherein the same key can return two different  
object depending on the retrieval method used and that is NOT what  
the built-in dict is for.  In fact, now that I think of it, get_key  
is probably a bad name for it, get_other_object_with_this_same_key is  
probably more apt :)

Erik Jones

Software Developer | Emma?
erik at myemma.com
800.595.4401 or 615.292.5888
615.292.0777 (fax)

Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com




From bignose+hates-spam at benfinney.id.au  Wed Oct 17 09:11:00 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 17 Oct 2007 23:11:00 +1000
Subject: Python's coming... from unexpected angles.
References: <5njcjpFil587U1@mid.uni-berlin.de> <87fy0b4e0e.fsf@benfinney.id.au>
	<op.t0aalvq4wepdt4@ericb.pragmadev>
	<877iln488x.fsf@benfinney.id.au>
	<op.t0b5k4x3wepdt4@ericb.pragmadev>
Message-ID: <87bqax28ez.fsf@benfinney.id.au>

"Eric Brunel" <see.signature at no.spam> writes:

> On Tue, 16 Oct 2007 13:19:26 +0200, Ben Finney
> <bignose+hates-spam at benfinney.id.au> wrote:
> > Does that mean you pronounce the word for the serpent as
> > "pee-thon"?
> 
> Yes.
> 
> > Anyway, the pronunciation of "Python" (and hence the "Py" in
> > "PyPy") is however you pronounce that word in the name of the
> > comedy troupe, Monty Python.
> 
> But the average frenchman will also pronounce "monty pee-thon" (I
> know: that's weird...).

No more weird than pronunciations of words in English. At least in
this case you're presenting a consistent pronunciation :-)

-- 
 \     "Having sex with Rachel is like going to a concert. She yells a |
  `\      lot, and throws frisbees around the room; and when she wants |
_o__)                     more, she lights a match."  -- Steven Wright |
Ben Finney


From sjmachin at lexicon.net  Mon Oct 15 17:57:18 2007
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 15 Oct 2007 14:57:18 -0700
Subject: Normalize a polish L
In-Reply-To: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
References: <1192466006.735303.20470@i38g2000prf.googlegroups.com>
Message-ID: <1192485438.934146.139740@q5g2000prf.googlegroups.com>

On Oct 16, 2:33 am, Peter Bengtsson <pete... at gmail.com> wrote:
> In UTF8, \u0141 is a capital L with a little dash through it as can be
> seen in this image:http://static.peterbe.com/lukasz.png
>
> I tried this:>>> import unicodedata
> >>> unicodedata.normalize('NFKD', u'\u0141').encode('ascii','ignore')
>
> ''
>
> I was hoping it would convert it it 'L' because that's what it
> visually looks like. And I've seen it becoming a normal ascii L before
> in other programs such as Thunderbird.
>
> I also tried the other forms: 'NFC', 'NFKC', 'NFD', and 'NFKD' but
> none of them helped.
>
> What am I doing wrong?

The character in question is NOT composed (in the way that Unicode
means) of an 'L' and a little slash; hence the concepts of
"normalization" and "decomposition" don't apply.

To "asciify" such text, you need to build a look-up table that suits
your purpose. unicodedata.decomposition() is (accidentally) useful in
providing *some* of the entries for such a table.




From Florian.Lindner at xgm.de  Fri Oct 12 07:12:54 2007
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 12 Oct 2007 13:12:54 +0200
Subject: Problem with MySQL cursor
References: <fel7m3$btq$03$1@news.t-online.com>
	<mailman.80.1192110138.927.python-list@python.org>
Message-ID: <fenkru$i43$01$1@news.t-online.com>

Carsten Haese wrote:

> On Thu, 2007-10-11 at 15:14 +0200, Florian Lindner wrote:
>> Hello,
>> I have a function that executes a SQL statement with MySQLdb:
>> 
>> def executeSQL(sql,  *args):
>>     print sql % args
>>     cursor = conn.cursor()
>>     cursor.execute(sql, args)
>>     cursor.close()
>> 
>> it's called like that:
>> 
>>     sql = "INSERT INTO %s (%s) VALUES (%s)"
>>     executeSQL(sql,  DOMAIN_TABLE, DOMAIN_FIELD, domainname)
> 
> You can't use parameter binding to substitute table names and column
> names, or any other syntax element, into a query. You can only bind
> parameters in places where a literal value would be allowed (more or
> less, the real rules are more complicated, but this rule of thumb gets
> you close enough). You have to construct the query string like this, for
> example:
> 
> sql = "INSERT INTO "+DOMAIN_TABLE+"("+DOMAIN_FIELD+") VALUES (%s)"
> executeSQL(sql, domainname)

Ok, I understand it and now it works, but why is limitation? Why can't I
just the string interpolation in any playes and the cursor function escapes
any strings so that they can't do harm to my query?

Regards,

Florian


From horpner at yahoo.com  Tue Oct 30 11:25:54 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Tue, 30 Oct 2007 15:25:54 GMT
Subject: A Python 3000 Question
References: <fg5fku$5c1$1@solaris.cc.vt.edu>
	<mailman.639.1193742687.13605.python-list@python.org>
Message-ID: <slrnfieg2b.18k.horpner@FIAD06.norwich.edu>

On 2007-10-30, Eduardo O. Padoan <eduardo.padoan at gmail.com> wrote:
> This is a FAQ:
> http://effbot.org/pyfaq/why-does-python-use-methods-for-some-functionality-e-g-list-index-but-functions-for-other-e-g-len-list.htm

Holy Airy Persiflage Batman!

Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import timeit
>>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
0.20332271187463391
>>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
0.48545737364457864

-- 
Neil Cerutti


From bj_666 at gmx.net  Wed Oct 31 10:22:45 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 31 Oct 2007 14:22:45 GMT
Subject: shouldn't 'string'.find('ugh') return 0, not -1 ?
References: <mailman.678.1193840121.13605.python-list@python.org>
Message-ID: <5orhdlFo3gssU3@mid.uni-berlin.de>

On Wed, 31 Oct 2007 13:31:06 +0000, jelle wrote:

> if I check a string for for a substring, and this substring isn't found, 
> should't the .find method return 0 rather than -1?
> this breaks the 
> 
> if check.find('something'):
>     do(somethingElse)
> 
> idiom, which is a bit of a pity I think.

And what should ``'string'.find('str')`` return?  How do you distinguish
the not found at all case from the found at the very beginning case!?

The simple test you want can be written this way:

if 'something' in check:
    do(something_else)

Ciao,
	Marc 'BlackJack' Rintsch


From besturk at gmail.com  Fri Oct  5 08:00:05 2007
From: besturk at gmail.com (Abandoned)
Date: Fri, 05 Oct 2007 05:00:05 -0700
Subject: Boolean parser..
In-Reply-To: <1191583772.041261.71790@19g2000hsx.googlegroups.com>
References: <1191526196.866591.322950@r29g2000hsg.googlegroups.com>
	<1191583772.041261.71790@19g2000hsx.googlegroups.com>
Message-ID: <1191585605.393165.72100@k79g2000hse.googlegroups.com>

http://pyparsing.wikispaces.com/space/showimage/searchparser.py this
is searchparser but i can't understant to use this.
Can anybody explain this how to use ?



From carsten at uniqsys.com  Wed Oct 10 16:12:16 2007
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 10 Oct 2007 16:12:16 -0400
Subject: for loop question
In-Reply-To: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
Message-ID: <1192047136.3388.19.camel@dot.uniqsys.com>

On Wed, 2007-10-10 at 14:56 -0500, Robert Dailey wrote:
> Hi,
> 
> I'm currently writing my own CSV parser since the built in one doesn't
> support Unicode.

Why do you think you need a CSV parser that supports unicode?

-- 
Carsten Haese
http://informixdb.sourceforge.net




From khemkaamit at gmail.com  Mon Oct 22 09:00:54 2007
From: khemkaamit at gmail.com (Amit Khemka)
Date: Mon, 22 Oct 2007 18:30:54 +0530
Subject: Iteration for Factorials
In-Reply-To: <1193056647.416562.36150@q3g2000prf.googlegroups.com>
References: <1193055966.362489.252080@v29g2000prd.googlegroups.com>
	<5o3jalFl0n43U1@mid.uni-berlin.de>
	<1193056647.416562.36150@q3g2000prf.googlegroups.com>
Message-ID: <1360b7230710220600s426cdaaft257ce6592c3479d1@mail.gmail.com>

On 10/22/07, Py-Fun <lorna.burns at gmail.com> wrote:
> On 22 Oct, 13:28, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> > Py-Fun wrote:
> > > I'm stuck trying to write a function that generates a factorial of a
> > > number using iteration and not recursion.  Any simple ideas would be
> > > appreciated.
> >
> > Show us your attempts, and we might suggest a fix. Because otherwise this
> > sounds suspiciously like homework.
> >
> > Diez
>
> Here is my futile attempt.  Be careful with this though, I just ran
> something similar and it was never ending...
>
> def itforfact(n):
>     while n<100:
>         print n
>         n+1
> n = input("Please enter a number below 100")
>
> itforfact(n)

Let me give you a pseudo code (which though can be found in most of
the textbooks and some 'simple' googling). Try to understand the code
and then write an equivalent python function.

function iFactorial(n: integer): integer;
var i, temp: integer;
begin
  temp = 1;
  for i = 1 to n do
    temp = temp * i
end
return temp

About your code.
1. why doesn't it surprise you if the code that you posted goes in
infinite loop ?!
2. why do you use condition:  n < 100
3. How do you think that your function will calculate the factorial ?
4. Instead of "input" use "raw_input", and then "cast" the input as integer .

Cheers,
amit.
-- 
--
Amit Khemka


From steve at REMOVE-THIS-cybersource.com.au  Sun Oct  7 13:14:35 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 07 Oct 2007 17:14:35 -0000
Subject: weakrefs and bound methods
References: <4708f276$0$11868$3b214f66@tunews.univie.ac.at>
	<5msflnFepbdqU1@mid.uni-berlin.de>
	<1191775103.234809.311870@o80g2000hse.googlegroups.com>
Message-ID: <13gi4vrfqhrs48d@corp.supernews.com>

On Sun, 07 Oct 2007 16:38:23 +0000, Michele Simionato wrote:

> On Oct 7, 12:26 pm, Marc 'BlackJack' Rintsch <bj_... at gmx.net> wrote:
> 
>> Drop all those `__del__()` methods as they prevent the garbage
>> collector from collecting "cycles".
> 
> I fully agree and I will add that __del__ methods are always a bad idea.

Always?

I recently wrote a bit of code where I needed to check that releasing the 
first object in a tree-like structure would allow Python to garbage 
collect all the other objects in a tree. I thought it would, but I wanted 
to be sure ("don't guess, test"), so I wrote a simple class, gave it a 
__del__ method that just printed self, inserted them in the tree, and 
then deleted the first one.

Worked like a charm.

Without __del__, what should I have done to test that my code was 
deleting objects and not leaking memory?

What should I do when my objects need to perform some special processing 
when they are freed, if I shouldn't use __del__?



-- 
Steven.


From jstroud at mbi.ucla.edu  Sat Oct 20 06:41:02 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 20 Oct 2007 03:41:02 -0700
Subject: what is the difference between the two kinds of brackets?
In-Reply-To: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
References: <1192875315.887877.210550@y27g2000pre.googlegroups.com>
Message-ID: <NQkSi.6944$oA2.3942@nlpi068.nbdc.sbc.com>

narutocanada at gmail.com wrote:
> hi
> 
> what is the difference between the two kinds of brackets?
> I tried a few examples but I can't make out any real difference:
> Are these two kinds of brackets mean the same thing in the "list"
> context? Thanks.


The square ones designate lists:

     http://docs.python.org/tut/node7.html

The rounded ones designate tuples:

     http://docs.python.org/tut/node7.html#SECTION007300000000000000000

The short of it is that lists can change and tuples can not.

<commentary>The long of it is that there are deep computer-science 
issues that distinguish the two and the differences become more 
important the more you know (presumably). However, I have been 
programming this language for 5 years, and I still can't figure out the 
necessity for having both. I have heard all of the arguments, however 
but none are terribly pursuasive.</commentary>

Practically speaking, however, if you don't know which one to use, then 
use the square kind.

James


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

http://www.jamesstroud.com


From prudek at bvx.cz  Wed Oct 17 09:28:49 2007
From: prudek at bvx.cz (Milos Prudek)
Date: Wed, 17 Oct 2007 15:28:49 +0200
Subject: readline support on openSuSE
Message-ID: <200710171528.50085.prudek@bvx.cz>

This question concerns compilation of Python from sources. Specifically Python 
2.3.6.

On Kubuntu 7.04, ./configure outputs these lines about readline:
checking for rl_pre_input_hook in -lreadline... yes
checking for rl_completion_matches in -lreadline... yes

On openSuSE 10.3, ./configure outputs these lines about readline:
checking for rl_pre_input_hook in -lreadline... no
checking for rl_completion_matches in -lreadline... no

And, of course, line editing in Python shell is possible on Kubuntu and 
impossible on openSuSE.

I do have libreadline5 and readline-devel RPM installed on openSuSE. What else 
might I need to have readline support?

-- 
Milos Prudek


From rsachetto at gmail.com  Wed Oct 10 16:03:40 2007
From: rsachetto at gmail.com (Rafael Sachetto)
Date: Wed, 10 Oct 2007 17:03:40 -0300
Subject: for loop question
In-Reply-To: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
References: <496954360710101256w2502c99dh5341ade1c0aaa88d@mail.gmail.com>
Message-ID: <250fcec00710101303m6b371262ve1a3e4dc4cacc979@mail.gmail.com>

Try this:

test = u"Hello World"

n = range(len(test))

for i in n:
   cur  =  test[i]
   try:
      next = test[i+1]
   except:
      next = ""
    print cur, next

just

On 10/10/07, Robert Dailey <rcdailey at gmail.com> wrote:
>
> Hi,
>
> I'm currently writing my own CSV parser since the built in one doesn't
> support Unicode. I'm wondering if there's a way to iterate over the
> characters in a unicode string and have access to both the 'current' and the
> 'next' characters each iteration. For example:
>
> test = u"Hello World"
>
> for cur,next in test:
>     print cur,next
>
> Ideally, this would output:
>
> 'H', 'e'
> 'e', 'l'
> 'l', 'l'
> 'l', 'o'
> etc...
>
> Of course, the for loop above isn't valid at all. I am just giving an
> example of what I'm trying to accomplish. Anyone know how I can achieve the
> goal in the example above? Thanks.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Rafael Sachetto Oliveira

Sir - Simple Image Resizer
http://rsachetto.googlepages.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071010/b5585fc4/attachment.html>

From python-url at phaseit.net  Mon Oct 22 09:53:38 2007
From: python-url at phaseit.net (Gabriel Genellina)
Date: Mon, 22 Oct 2007 13:53:38 +0000 (UTC)
Subject: Python-URL! - weekly Python news and links (Oct 22)
Message-ID: <ffia12$lfc$1@lairds.us>

QOTW:  "[T]here's always no best." - Lawrence Oluyede
    http://groups.google.com/group/comp.lang.python/msg/32bce47d185 ce42e

"I actually do a lot of unit testing. I find it both annoying and highly
necessary and useful." - Steven Bethard
    http://groups.google.com/group/comp.lang.python/msg/4df60bdff72540cb

    
    Some confusion when using `if x:` as an existence test:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/e75348ea2159ceac
    
    The difference between list+=a and list.extend(a) and
    how to use the timeit module the right way:
        http://groups.google.com/group/comp.lang.python/msg/2f932731e3b96c7f
    
    Detecting the last element in an iteration:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/34c7398eec5a92cd
    
    Unicode support in MySQL:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/e1a9b5e57d37254a
    
    mod_python and its limited reload support:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/30cc3ff191064589
    
    unicodedata.normalize is not enough for automatic transliteration:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/e977d6cd55d1014a
    
    How to use expressions and reference other modules
    when configuring the logging package:
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/21be57fae7e9381a
    
    How to tell if a script is being run by "python.exe"
    or "pythonw.exe" (Windows):
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/716df077effd7736
    

========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    Just beginning with Python?  This page is a great place to start:
	http://wiki.python.org/moin/BeginnersGuide/Programmers

    The Python Papers aims to publish "the efforts of Python enthusiats":
	http://pythonpapers.org/
    The Python Magazine is a technical monthly devoted to Python:
	http://pythonmagazine.com

    Readers have recommended the "Planet" sites:
	http://planetpython.org
	http://planet.python.org

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard continues the marvelous tradition early borne by
    Andrew Kuchling, Michael Hudson, Brett Cannon, Tony Meyer, and Tim
    Lesher of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Many Python conferences around the world are in preparation.
    Watch this space for links to them.

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Phaseit, Inc. (http://phaseit.net) is pleased to participate in and
sponsor the "Python-URL!" project.  Watch this space for upcoming
news about posting archives.


From bjourne at gmail.com  Mon Oct  1 12:53:50 2007
From: bjourne at gmail.com (=?ISO-8859-1?Q?BJ=F6rn_Lindqvist?=)
Date: Mon, 1 Oct 2007 18:53:50 +0200
Subject: using inspect on pygtk
In-Reply-To: <1191031070.901842.71210@o80g2000hse.googlegroups.com>
References: <1191031070.901842.71210@o80g2000hse.googlegroups.com>
Message-ID: <740c3aec0710010953x53c08c7h5035cefbe167de86@mail.gmail.com>

On 9/29/07, Chris Pax <christopher.pax at gmail.com> wrote:
> Hello,
>
> I recently been trying to use the inspect module to inspect the
> arguments of gtk objects, such as gtk.Button. I tried like this:
>
> inspect.getargspec(gtk.Button.__init__)
>
> and get the fallowing error:
>
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib/python2.5/inspect.py", line 743, in getargspec
>     raise TypeError('arg is not a Python function')
> TypeError: arg is not a Python function

What you are seeing is completely normal. inspect.getargspec(sys.exit)
gives the same result. PyGTK is a wrapper around the GTK+ C library
and since all the code is written in C, inspect can't infer anything
about the function gtk.Button.__init__.

-- 
mvh Bj?rn


From aisaac at american.edu  Mon Oct 29 12:13:26 2007
From: aisaac at american.edu (Alan Isaac)
Date: Mon, 29 Oct 2007 16:13:26 GMT
Subject: simple try/except question
In-Reply-To: <1193673818.436235.35290@y42g2000hsy.googlegroups.com>
References: <xfnVi.9506$aJ3.5968@trnddc02>
	<1193673818.436235.35290@y42g2000hsy.googlegroups.com>
Message-ID: <GEnVi.6082$R%4.1287@trnddc05>

Gabriel Genellina wrote:
> Perhaps you reassigned TypeError?

Yes, that was it.
Sheesh.

Thanks!
Alan


From zz.wayne at gmail.com  Fri Oct 12 01:00:47 2007
From: zz.wayne at gmail.com (Zhu Wayne)
Date: Fri, 12 Oct 2007 01:00:47 -0400
Subject: Is this a bug of the lambda function
Message-ID: <826b8ca90710112200r732345bxe504bb6a147ec725@mail.gmail.com>

Hi,
I have a short code which gives me strange results, the code is as follows:

f = [lambda x: None]*5
for j in range(0, 5):
     f[j] = lambda x: float(j)*x
print "print f[k](1.),"
for k in range(5):
     print f[k](1.),
print "expect 0. 1. 2. 3. 4."
print
print "print f[j](1.),"
for j in range(5):
     print f[j](1.),
print "expect 0. 1. 2. 3. 4."
print
print "print f[0](1.), f[1](1.), ..."
print f[0](1.), f[1](1.), f[2](1.), f[3](1.), f[4](1.)
print "expect 0. 1. 2. 3. 4."

*************************************************
The result is very strange:

print f[k](1.),
4.0 4.0 4.0 4.0 4.0 expect 0. 1. 2. 3. 4.

print f[j](1.),
0.0 1.0 2.0 3.0 4.0 expect 0. 1. 2. 3. 4.

print f[0](1.), f[1](1.), ...
4.0 4.0 4.0 4.0 4.0
expect 0. 1. 2. 3. 4.


It seems only when I use the index j (which is declear with the lambda
function), I can get expected answer, otherwise the result is not
unexpected.

Could anybody give me a possible explanation to this? Does python use kind
of pre-complie techinque to treat the lambda function? (like the macro in C
or inline function in C++)

Thanks in advance

Wayne
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071012/70d02026/attachment.html>

From paul.hankin at gmail.com  Wed Oct 17 16:33:06 2007
From: paul.hankin at gmail.com (Paul Hankin)
Date: Wed, 17 Oct 2007 20:33:06 -0000
Subject: Noob questions about Python
In-Reply-To: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
References: <1192649863.496557.230730@v29g2000prd.googlegroups.com>
Message-ID: <1192653186.923384.131520@v23g2000prn.googlegroups.com>

On Oct 17, 8:37 pm, Ixiaus <parnel... at comcast.net> wrote:
> I have a few questions regarding Python behavior...
> as the integer 72 instead of returning 00110, why does Python do that?
> (and how can I get around it?)

You can do this:

def bin(x):
    return int(x, 2)

val = bin('00110')

--
Paul Hankin



From menkaur at gmail.com  Thu Oct 25 00:09:00 2007
From: menkaur at gmail.com (menkaur at gmail.com)
Date: Thu, 25 Oct 2007 04:09:00 -0000
Subject: python project ideas
Message-ID: <1193285340.816550.188040@v29g2000prd.googlegroups.com>

hi to everyone
I wondered if this might be the right place to ask for some ideas for
python project for university.
I'd like it to be something useful and web-based. And the project must
be complete in 2-3 months by 2-3 person group.
May be something useful for open source or python community ...
Well, just post what you think could be appropriate ...



From kennytilton at optonline.net  Wed Oct 10 15:34:31 2007
From: kennytilton at optonline.net (Ken Tilton)
Date: Wed, 10 Oct 2007 15:34:31 -0400
Subject: The Modernization of Emacs: terminology buffer and keybinding
In-Reply-To: <1191978311.987341.271000@r29g2000hsg.googlegroups.com>
References: <87tzt3ihev.fsf@kobe.laptop><m31wg6lre9.fsf@borud.not>
	<1182370216.961241.6960@n60g2000hse.googlegroups.com>
	<85zm2ufjpb.fsf@lola.goethe.zz>
	<1182372592.803332.288260@u2g2000hsc.googlegroups.com>
	<m3myyt47nq.fsf@latakia.dyndns.org>
	<1182549094.366282.286740@m37g2000prh.googlegroups.com>
	<87bqf7fwmg.fsf@telesippa.clsnet.nl>
	<1182553682.197778.138500@g37g2000prf.googlegroups.com>
	<873b0fhokz.fsf@kobe.laptop> <13frd6vtarbee75@corp.supernews.com>
	<f8f3g3plthlbo8ebdo88coqf5s87f61lk5@4ax.com>
	<13gj0neh59oks91@corp.supernews.com>
	<1191819894.369786.130300@v3g2000hsg.googlegroups.com>
	<slrnfgk58g.2ps.joostkremers@j.kremers4.news.arnhem.chello.nl>
	<1191978311.987341.271000@r29g2000hsg.googlegroups.com>
Message-ID: <kP9Pi.190$et6.172@newsfe12.lga>



nebulous99 at gmail.com wrote:
> On Oct 8, 7:32 am, Joost Kremers <joostkrem... at yahoo.com> wrote:
> 
>>bbo... at gmail.com wrote:
>>
>>>Don't both "man" and those words for measurement come ultimately from
>>>words for "hand" (similarly to words like "manual", as in labor)?
>>
>>no.
> 
> 
> Do not bluntly contradict me in public.

I am reminded of my tai chi teacher in NYC, who used to come over to 
correct me and say, "I used to do it that way."

Or, "What you are doing is good. What I do is...".

His school is very successful.

kenny

-- 
http://www.theoryyalgebra.com/

"Mother always told me, if you tell a lie,
always rehearse it. If it don't sound good
to you, it won't sound good to no one else."
                          - Satchel Paige


From acherry at btinternet.com  Fri Oct  5 10:03:38 2007
From: acherry at btinternet.com (Adrian Cherry)
Date: 5 Oct 2007 15:03:38 +0100
Subject: Python Magazine: Issue 1 Free!
References: <mailman.1576.1191584716.2658.python-list@python.org>
	<Xns99C08FBF59089apc@10.15.188.42>
	<1191591797.206824.301220@o3g2000hsb.googlegroups.com>
Message-ID: <Xns99C09BDA88CE5apc@10.15.188.42>

Paul McGuire <ptmcg at austin.rr.com> wrote in
news:1191591797.206824.301220 at o3g2000hsb.googlegroups.com: 

> I thought Steve Holden's Random Hits column was the "back
> page commentry".

after re-reading it then yes I can see your point, I suppose I 
was just hoping for some pythonesque humour to close the show!

Regards

Adrian



From iansan at gmail.com  Thu Oct 11 14:51:19 2007
From: iansan at gmail.com (IamIan)
Date: Thu, 11 Oct 2007 11:51:19 -0700
Subject: CGI and external JavaScript nightmare
In-Reply-To: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
References: <1192083786.137629.24550@r29g2000hsg.googlegroups.com>
Message-ID: <1192128679.537518.230430@50g2000hsm.googlegroups.com>

bump



From fanglicheng at gmail.com  Sun Oct  7 14:07:36 2007
From: fanglicheng at gmail.com (Licheng Fang)
Date: Sun, 07 Oct 2007 11:07:36 -0700
Subject: Problem of Readability of Python
Message-ID: <1191780456.833563.173080@57g2000hsv.googlegroups.com>

Python is supposed to be readable, but after programming in Python for
a while I find my Python programs can be more obfuscated than their C/C
++ counterparts sometimes. Part of the reason is that with
heterogeneous lists/tuples at hand, I tend to stuff many things into
the list and *assume* a structure of the list or tuple, instead of
declaring them explicitly as one will do with C structs. So, what used
to be

struct nameval {
    char * name;
   int val;
} a;

a.name = ...
a.val = ...

becomes cryptic

a[0] = ...
a[1] = ...

Python Tutorial says an empty class can be used to do this. But if
namespaces are implemented as dicts, wouldn't it incur much overhead
if one defines empty classes as such for some very frequently used
data structures of the program?

Any elegant solutions?



From tim.arnold at sas.com  Thu Oct 25 17:15:36 2007
From: tim.arnold at sas.com (Tim Arnold)
Date: Thu, 25 Oct 2007 17:15:36 -0400
Subject: elementtree w/utf8
Message-ID: <ffr11p$unf$1@foggy.unx.sas.com>

Hi, I'm getting the by-now-familiar error:
return codecs.charmap_decode(input,errors,decoding_map)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa9' in position 
4615: ordinal not in range(128)

the html file I'm working with is in utf-8, I open it with codecs, try to 
feed it to TidyHTMLTreeBuilder, but no luck. Here's my code:
from elementtree import ElementTree as ET
from elementtidy import TidyHTMLTreeBuilder

            fd = codecs.open(htmfile,encoding='utf-8')
            tidyTree = 
TidyHTMLTreeBuilder.TidyHTMLTreeBuilder(encoding='utf-8')
            tidyTree.feed(fd.read())
            self.tree = tidyTree.close()
            fd.close()

what am I doing wrong? Thanks in advance.

On a related note, I have another question--where/how can I get the 
cElementTree.py module? Sorry for something so basic, but I tried installing 
cElementTree, but while I could compile with setup.py build, I didn't end up 
with a cElementTree.py file anywhere. The directory structure on my system 
(HPux, but no root access) doesn't work well with setup.py install.

thanks,
--Tim Arnold




From amjadcsu at gmail.com  Wed Oct 31 11:01:46 2007
From: amjadcsu at gmail.com (amjadcsu at gmail.com)
Date: Wed, 31 Oct 2007 08:01:46 -0700
Subject: capturing output of command line in an array
Message-ID: <1193842906.058058.29080@t8g2000prg.googlegroups.com>

Hi

I am trying to execute a command using os.system. this command lists
the number of nodes alive in a cluster. I would like to capture the
output in list/array in python. IS it possible.?/

Here is my command
 gstat -a
node13     2 (    0/   56) [  0.00,  0.00,  0.00] [   0.0,   0.0,
0.1,  99.9,   0.0] OFF
node12     2 (    1/   63) [  0.99,  0.97,  0.91] [  46.6,   0.0,
3.7,  49.8,   0.0] OFF
node8     2 (    1/   59) [  0.99,  0.97,  0.91] [  47.5,   0.0,
2.8,  49.7,   0.0] OFF
node2     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
3.7,  49.7,   0.0] OFF
node1     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
3.7,  49.7,   0.0] OFF
node7     2 (    1/   58) [  0.99,  0.97,  0.91] [  49.8,   0.0,
0.6,  49.7,   0.0] OFF
node11     2 (    1/   59) [  0.99,  0.97,  0.91] [  46.6,   0.0,
3.8,  49.6,   0.0] OFF
node4     2 (    1/   59) [  1.00,  1.00,  0.93] [  46.6,   0.0,
3.7,  49.7,   0.0] OFF
node10     2 (    1/   59) [  1.00,  1.00,  0.94] [  46.7,   0.0,
3.7,  49.7,   0.0] OFF
node5     2 (    1/   59) [  1.00,  1.00,  0.92] [  49.8,   0.0,
0.4,  49.7,   0.0] OFF
node6     2 (    1/   59) [  1.00,  1.00,  0.94] [  49.5,   0.0,
0.9,  49.7,   0.0] OFF

I would like to have an array where each element contains the nodes

for example
a=[node13,node12,node2,node8,node1,node7,node 11]

any help would be appreciated

thanks



From ensiferum_ at hotmail.com  Fri Oct 19 12:53:03 2007
From: ensiferum_ at hotmail.com (Sami Vaisanen)
Date: Fri, 19 Oct 2007 19:53:03 +0300
Subject: traceback over C API and PyObject_CallObject
Message-ID: <pan.2007.10.19.16.53.02.646588@hotmail.com>

Hello group,

I'm trying to get the Python exception information (message and traceback)
stored into a string in my C++ code. However all i get back is the string
"None". All the checks pass and all pointers get a value from the python
API calls. I've also tried with a different function such as
PyObject_CallFunctionObjArgs but the result is the same.

Thanks

void get_python_exception(string& message, string& traceback)
{
    GIL g;
 
    PyObject* type  = NULL;
    PyObject* value = NULL;
    PyObject* trace = NULL;
 
    PyErr_Fetch(&type, &value, &trace);
 
    py_ref ref_type(type);
    py_ref ref_value(value);
    py_ref ref_trace(trace);
 
    py_ref name(PyString_FromString("traceback"));
    py_ref module(PyImport_Import(name.get()));
    if (module)
    {
        py_ref fun(PyObject_GetAttrString(module.get(), "format_exc"));
        if (fun)
        {
            PyErr_Restore(type, value, trace);
            ref_type.release();
            ref_value.release();
            ref_trace.release();
 
            py_ref ret(PyObject_CallObject(fun.get(), NULL));
            if (ret && PyString_Check(ret.get()))
            {
                char* str = PyString_AsString(ret.get());
                message = str;
                traceback = "traceback not available";
                return;
            }
        }
    }
    message   = "message not available";
    traceback = "traceback not available";
}




From deets at nospam.web.de  Tue Oct  9 11:18:34 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 09 Oct 2007 17:18:34 +0200
Subject: Problem with argument parsing
References: <1191940442.108905.292810@50g2000hsm.googlegroups.com>
Message-ID: <5n1keaFfoj0eU1@mid.uni-berlin.de>

lgwe wrote:

> I have a python-script: myscript, used to start a program on another
> computer and I use OptionParser in optpars.
> I use it like this: myscript -H host arg1 -x -y zzz
> I would like OptionParser to ignore all arguments after arg1, because
> these are options that should be used by the program started on the
> oter computer arg1 -x -y zzz.
> One solution is to write: myscript -H host "arg1 -x -y zzz"
> But is it in some way possible to instruct OptionParser to ignore -x -
> y zzz without  the "..."?

Use -- to separate arguments to be parsed by OptionParser from the
to-be-ignored-ones, which is documented btw.

Diez


From k_r_a_j_kumar at yahoo.co.in  Wed Oct  3 07:40:51 2007
From: k_r_a_j_kumar at yahoo.co.in (Raj kumar)
Date: Wed, 3 Oct 2007 12:40:51 +0100 (BST)
Subject: Microdom xml file
Message-ID: <927702.95485.qm@web8705.mail.in.yahoo.com>

Hi every one,
Can any one send me the sample code/links for
creating a XML file and adding a tag by using microdom in twisted python.
Thank you in advanced.

       
---------------------------------
 Now you can chat without downloading messenger. Click here to know how.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20071003/fb19748b/attachment.html>

From kyosohma at gmail.com  Mon Oct 22 09:48:51 2007
From: kyosohma at gmail.com (kyosohma at gmail.com)
Date: Mon, 22 Oct 2007 13:48:51 -0000
Subject: Endless GIL and thread confusion
In-Reply-To: <pan.2007.10.21.16.25.37.300233@hotmail.com>
References: <pan.2007.10.21.16.25.37.300233@hotmail.com>
Message-ID: <1193060931.105181.81270@z24g2000prh.googlegroups.com>

On Oct 21, 11:25 am, enska <ensifer... at hotmail.com> wrote:
> Can someone clarify the steps needed to make access to the interpreter
> safe from multiple threads?
>
> I've been reading the docs for days and I still find them very confusing
> and misleading. For example does the PyGILState_Ensure() function lock the
> GIL or just create the thread state? Is thread supposed to call it once on
> creation and then the release function before exiting or is this the
> preferred mechanism to handle the locking? Most of the confusion stems
> from this segment in the documentation.
>
> "...when threads are created from C, they don't have the global
> interpreter lock, nor is there a thread state data structure for them.
> Such threads must bootstrap themselves into existence, by first creating a
> thread state data structure, then acquiring the lock, and finally storing
> their thread state pointer, before they can start using the Python/C API.
> When they are done, they should reset the thread state pointer, release
> the lock, and finally free their thread state data structure.
>
> Beginning with version 2.3, threads can now take advantage of the
> PyGILState_*() functions to do all of the above automatically."
>
> Anyway, currently my code looks like this:
>
> void foobar(...)
> {
>     PyGILState state = PyGILState_Ensure();
>
>     // make python calls
>
>     PyGILState_Release(state);
>
> }
>
> void blablah(...)
> {
>     PyGILState state = PyGILState_Ensure();
>
>     // make python calls
>
>     PyGILState_Release(state);
>
> }
>
> My python Initialization code looks like this
>
> void init_python(char* progname, char* bindir)
> {
>     Py_SetProgramName(progname);
>     PyEval_InitThreads();
>     Py_InitializeEx(0);
>
>     char* argv[] = {progname, bindir};
>     PySys_SetArgv(2, argv);
>
> }
>
> calling foobar() or blablah() from the main thread works as expected, but
> if the second thread calls them it locks up in the call to
> PyGILState_Ensure().
>
> I have tried adding a call to PyEval_ReleaseLock() in the init_python
> function to make sure that the main thread is not holding the GIL, but
> this causes the application to segfault when it is calling Py_Finalize()
> so it is clear that this is not correct.
>
> Please advice.
>
> Thanks.

I use the Threading module whenever I need to use threads. It works
quite nicely and I have yet to have any problems with it, except for a
little goofiness with WMI that was explained to me long ago. You might
check that module out.

The wiki for wxPython actually has a good tutorial on threads:

http://wiki.wxpython.org/LongRunningTasks

And here's an article on usurping the GIL:

http://www.pyzine.com/Issue001/Section_Articles/article_ThreadingGlobalInterpreter.html

Hope that helps a little.

Mike



From dschruth at gmail.com  Tue Oct 23 13:37:23 2007
From: dschruth at gmail.com (David Michael Schruth,)
Date: Tue, 23 Oct 2007 10:37:23 -0700
Subject: Can't Write to PostGIS PostGreSQL database via psycopg2
In-Reply-To: <mailman.357.1193111026.13605.python-list@python.org>
References: <1193102391.608145.136960@k35g2000prh.googlegroups.com>
	<mailman.357.1193111026.13605.python-list@python.org>
Message-ID: <1193161043.516814.13760@e34g2000pro.googlegroups.com>

On Oct 22, 8:43 pm, Erik Jones <e... at myemma.com> wrote:
> On Oct 22, 2007, at 8:19 PM, David Michael Schruth, wrote:
>
>
>
> > Hi,
>
> > I am sort of in a jam here.  I am using the PsycoPG2 library to read
> > data out of a windows XP based PostGIS / PostGreSQL database but I am
> > apparently unable to write (update or insert) even though I am able to
> > read (select)
>
> > I am using PsycoPG2 2.0.6 (psycopg2-2.0.6.win32-py2.5-pg8.2.4-
> > release.exe )
> > with Python 2.5 (python-2.5.msi)
> > and PostGres 8.2.5.-1   (postgresql-8.2.5-1.zip)
> > and PostGIS 8.2 (postgis-pg82-setup-1.3.1-1.exe)
>
> > I can use PGadminIII to paste the same SQL queries and execute just
> > fine, but when I try to execute them via python code like
>
> > import psycopg2
> > conn = psycopg2.connect("dbname='postgis' user='postgres'
> > host='localhost' password='12345'")
> > c=conn.cursor()
> > c.execute("""INSERT INTO thetable (name) VALUES ('asdf');""")
> > c.execute("""UPDATE thetable SET name = 'somename' WHERE id = 321;""")
> > print(c.statusmessage)
> > #returns "INSERT 0 1" and "UPDATE 0" respectively
>
> > It gives me very specialized table specific error messages if the
> > query is wrong, but when it's correct, it does nothing and doesn't
> > update.   The only way I can update is pasting the query into the
> > PgAdminIII query window.
>
> > This is a problem on two separate machines (XP and Windows 2003
> > server) with all of the above components installed by two different
> > people.''
>
> The return value of the insert of 'INSERT 0 1' indicates that one row
> was inserted so the insert certainly worked.  If you're not seeing
> the results when you look at the database after the script has run
> it's probably because you need to call conn.commit() after your
> execute statements in order to commit your transaction as psycopg
> does not, by default, run in "autocommit" mode.  The update's return
> value of 'UPDATE 0' indicates that the where condition of your update
> query did not, in fact, match any existing rows in your table.
>
> Erik Jones
>
> Software Developer | Emma?
> e... at myemma.com
> 800.595.4401 or 615.292.5888
> 615.292.0777 (fax)
>
> Emma helps organizations everywhere communicate & market in style.
> Visit us online athttp://www.myemma.com

Thank you so much that fixed the problem!